Wednesday, October 30, 2019
Reflective Case Study Example | Topics and Well Written Essays - 2250 words
Reflective - Case Study Example After LAS attended the scene, they found her GCS to be 11/15, and a spot measurement of random blood sugars resulted in a value of 2.5 mmol/L. Through this reflective case study assignment, I will critically review the care provided by me as the first responder. I will also analyse whether the care was in conformity with the NICE guidelines (Qureshi et al., 2005). For this assignment, I would use Gibbs model of reflection since this is useful in nursing, and this adds to the new knowledge in order to develop a care plan within a single reflective cycle (Wilding, 2008). Reflection is a process of self-inquiry and transformation towards realising desirable practice as a lived reality. As such, reflection is both the research and developmental tool. By reflecting on my everyday practice, I have a chance to become increasingly mindful of myself within the practice, care delivery, and the way I do it. I may become more aware of the way I think, feel and respond to situations as they unfold. I may become more sensitive to the people within those situations, whether patients, their friends or relatives, or my colleagues. As a consequence, I can respond more in tune with my values and more skillfully with my patients and others, which is desirable from me as a person delivering care. The reflexive narrative is presented as an exemplar of researching self as a process of self-inquiry and transformation (Souter, 2003). The... To begin with, however, it was difficult to discern where to begin. It has been suggested that using a framework would be better (Chabeli and Muller, 2004), so it makes the reflective process structured and guided. I personally feel those who are very experienced would not need a framework for reflection. For me as a nurse as a means of reflective practice, I have and would always prefer to have a framework, and I choose the Gibbs (1988) reflective cycle in my reflections on my practice. From my experience and previous reflective episodes, I have seen that reflection is a dynamic and cyclic process. Therefore, a framework with overt cyclical approach would be most suitable. Gibbs formulated his reflective cycle while attempting to explain experiential learning, and in each step of the cycle, the reflective practitioner is faced with a series of questions that both guide and provide structure to the reflective process on practice. This process starts with a phenomenon and description of the event, and in each step, there are questions that lead to further critical analysis leading to a plan of action and then re-reflection on the changes. Reflections needs to take place at a conscious level that allows a nurse to make decisions about her learning, and critical analysis of such will also consider thoughts and ideas, evaluation of them, and making conscious informed choices about the future course of action in a given scenario. Most of the student life nursing placement s lead to experiences which are based on observations in the clinical scenario of actions or practice of other people. This definitely helps the nurses to gain experience and technical skills. However, reflection is a process to review those experiences, so a closer and critical
Monday, October 28, 2019
Growing Up on Fast Food Essay Example for Free
Growing Up on Fast Food Essay Most Americans have eaten at a drive-in restaurant, diner and/or fast-food restaurant in their lives. Customers frequent these establishments for its convenience and affordability. Part of the fast-food lure is to satisfy the body; another part is a family sitting down and enjoying a meal together. Many people back in the 1950s and 1960s did not understand food safety and its dangers. Food was cooked in butter or lard instead of Trans oils, vegetable oil or margarine that are used today. Foods in the past were loaded with fat and cholesterol, which made consumers early candidates for cardiovascular diseases, stroke and other health issues. Food may have tasted delicious, but that came with a heavy price. Consumers of today are more educated concerning the risks and rewards of eating out and how food is prepared. They still face similar obstacles as their parents and grandparents did generations ago. How is the food made? What ingredients are used in making the selected dish? Is the place where the food is grown/processed/made reputable? Any of the aforementioned questions that are answered in the negative should be cause for concern. à Recent examples in the U.S. include the peanut recall. In that case, the product was tainted at the manufacturing plant. The items were put out for mass consumption, and that decision lead to many people getting sick and others dying. The Peanut Corporation of America (PCA) voluntarily recalled peanuts that were manufactured in either Georgia or Texas for fear that consumers would be exposed to Salmonella poisoning. (FDA, p.1) Although the outbreak did not affect jars or peanut butter commonly found in supermarkets, the tainted supply went to institutions and other establishments. (MSNBC, Fast Food 2 p.1) This meant restaurants could have received the contaminated peanut butter. Where hundred of people were injured and a half-dozen people died from Salmonella poisoning, this could have been even more tragic if not for the recall. (1) The news becomes important since many restaurants offer peanut and jelly sandwiches on their kids menu. It is a comfort food for many peopleââ¬âfor the young and young-at-heart. (Phantom Gourmet, 2009) Having that option taken away would have been tough for restaurant owners who would have removed that item off its menu and the patrons who would have ordered the sandwich. (Phantom Gourmet, 2009) This is where the fast food industry can either be a friend or foe. They offer many choices for breakfast, lunch and dinner. Items range from bacon and eggs in the morning to prime rib in the evening. Many places like diners are open 24 hours, so people can get what they are craving any time. Being able to order what customers want when they want entices people to eat out. Another reason people go out to eat is the restaurantââ¬â¢s atmosphere. Certainly a fast-food facility such as McDonaldââ¬â¢s will have a different motif than a diner, which will have a more distinctive ambiance than a mom-and-pop restaurant. The ââ¬Å"Golden Archesâ⬠typically serves hamburgers, fast sandwiches with French fries and soft drinks. Kids are usually seen playing in a designated area. Not a place for people without kids who want to sit down to a quiet meal. The problem comes as much of the food is either fatty to begin with or comes with condiments that are also high in fat, calories and other things that can expand a waistline or harden an artery. Fast food companies are adapting to the way Americans eat by offering salads, parfaits and other healthier choices. McDonaldââ¬â¢s has spent billions of dollars in advertising these menu changes (McDonaldââ¬â¢s Corporate, p.1) Fast Food 3 Diners have been around this country for decades. Most people have one either in or near their town. These establishments offer good food and reasonable prices. That is often not the primary reason patrons flock to the diner, however. The restaurant set up is the main attraction. Some places have rally nights featuring vintage cars and motorcycles from the 1950s and 1960s. Other places house 50s-era memorabilia with photos of Singer/Actor Elvis Presley, Actress Marilyn Monroe, Actor James Dean and advertisements for Coke products that were very inexpensive in those days. Try getting a bottle of coke for a nickel todayââ¬âit will not happen because of the cost of making the item and most companies use plastic instead of glass. There is less of a safety risk involved with plastic and it is cheaper to produce. Then there is the modern convenience of take-out or drive through. Being able to take home a bag from a fast-food place is certainly convenient and one does not mean unloading the family of the car. A menu is set up outside where people can give their orders, drive up to the window, pay the server, get their food and drive off to their next destination. Sounds easy in that the food still comes out fast (and correctly, one hopes), but what the experience lacks is people enjoying the food. Sure, the family sits in the car eating their hamburgers and French fries, but at the cost of getting the car dirty, having to throw out the garbage later and being cramped in a car seat without the benefits of stretching or using the restroom if needed. That type of convenience may be too much for some people. There is no wrong answer to how people dine. Time, the order itself, and other circumstances dictate if and when a person of family sits inside the restaurant, takes it out, or drives through. The bottom line for the restaurants is making sure the food is properly served to its customers so they return. Fast Food 4 This paper also hopes to debunk the myths surrounding fast food, how people who grew up eating at such places have adapted with the times, and how the restaurant industry has attempted to enlighten its customers about the choices they have. Iconic restaurants such as McDonaldââ¬â¢s and Kentucky Fried Chicken (A.K.A. KFC) had a formula for encouraging return visitors. Offer customers good food at reasonable prices and they may come back again and bring friends. Both franchises have been going strong for more than five decades because their philosophy has not changed much during that time. Healthy Does Not Bad Tasting One problem fast food companies had to address is the quality of the ingredients used to make their trademark dishes.à Is the meat for the burgers made at McDonaldââ¬â¢s or Burger King the best quality they can find? Are the chickens raised for use at Kentucky Fried Chicken (KFC) fed a solid diet of nutrients? Those questions and answers matter to a point. Everyone will demonstrate the excellence of their products to show they care about their customers. If they fail, then actions such as recalls (for peanuts as previously mentioned) happen. This puts the industry under negative light and those working within the industry must work harder to regain the customerââ¬â¢s trust. Restaurants that did not have any trouble with the recalled product will be challenged to make their products better or fall behind in the marketplace. McDonaldââ¬â¢s has been proactive over the past three decades in educating consumers about their foods and service (McDonaldââ¬â¢s, p.1). They began printing up nutrition information for their customers to read if they wish. They might not like the fact a ââ¬Å"Big Macâ⬠sandwich has 50 percent of the recommended daily allowance (RDA) of saturated fat. (1) Fast Food 5 Or, a McRibâ⬠sandwich has 48 percent of the RDA of saturated fat. (1) Clearly, these are not choices for people looking to either lose weight or remain physically fit. Their nutritional information may be found either by accessing the company website at www.mcdonalds.com or stopping in any one of their restaurants and picking up a brochure. Eating at McDonaldââ¬â¢sââ¬âor any fast food placeââ¬âfor a prolonged period of time can have detrimental consequences. Morgan Spurlock wrote and directed a 2004 film about the fast-food industry, ââ¬Å"Supersize Me!â⬠The plot was simple: Spurlock would eat nothing but the contents of the McDonaldââ¬â¢s menu for 30 consecutive days. He had to order everything off the menu at least once and had to supersize his order if asked. He would also refrain from exercising during the one-month period. (Spurlock, p.1) His point was to demonstrate the hazardous effects of eating out at fast food restaurants. Watching the film makes people cringe as he begins to gain too much weight, lose energy in wanting to do any real activities. Because of his McDonaldââ¬â¢s diet and his lack of exercise, Spurlock not only gained a whopping 24à ½ pounds in 30 days, consumed a pound of sugar a day on average and his cholesterol rose an unbelievable 65 points from when this experiment started. (Spurlock Quotes, p.1) Besides the obvious physical ailments that befell Spurlock during his thirty days, there were also the psychological aspects. He said during the movie: ââ¬Å"I nearly doubled my risk of coronary heart disease, making myself twice as likely to have heart failure. I felt depressed and exhausted most of the time, my mood swung on a dime and my sex life was non existent. I craved this food more and more when I ate it, and got massive headaches when I didnt. In my final The movie was nominated for an Academy Award had had quite the reaction from moviegoers. Although McDonaldââ¬â¢s officials denied the moved at the time, they scrapped the supersize option several weeks after the movie was released. (Wikipedia, p.1) They also offered its customers healthier alternatives such as salads. Spurlock said those choices contained more sugar than a bag of cookies. (1) Spurlock accomplished what he set out to do: find the causes of overweight people in the US and the bigger problem of obesity in this country. McDonaldââ¬â¢s and the rest of the fast-food industry had to take note that their foods, if taken as much as Spurlock had, would have devastating effects on peopleââ¬â¢s health and well being. Nobody suggested that families eat every meal at restaurants. That logic would be expensive as well and unhealthy and would not make much sense. His body changed for the worse after his 30-day McDonaldââ¬â¢s binge. It took five months for Spurlock to lose the weight he gained during that period (Spurlock Quotes, p.1). He suffered from liver damage, high blood pressure and other damaging ailments while performing this experiment. Moderation for anything is the best course of action when attempting to so something. That McDonaldââ¬â¢s food was not healthy struck a chord, that Spurlock damaged his body making a point struck an even louder chord.
Saturday, October 26, 2019
The Dawn Of A New Beginning :: Free Essays Online
The Dawn Of A New Beginning Many mornings during my childhood, my father would take me to watch the sunrise over the water. The place he took me was discovered several years prior and was the ideal place to watch the sunrise. It was comprised of a hill that was surrounded with only the purity of nature. The hill was encompassed by trees, and it slowly sloped down until the foot of the hill waded into the waterââ¬â¢s edge. At the top of the hill stood a massive Wye Oak tree, that to a child eyes seemed as though it was a skyscraper. This tree was as wide as a house and was full of green leaves. It was strategically placed in the center of the hill, which also happened to be the optimum point to see the sunrise. On one side of this hill was a field of swaying flowers. The flowers formed a rainbow of color, like the ones that were in the field by the Emerald City in Wizard of Oz. On another side was a crystal blue lake whose top seemed to be like a sheet of ice. This place was the ââ¬Å"ideal placeâ⬠for the sunrise because no matter what was wrong in life, this tranquil area, which was like the Garden of Eden, was a means of escape. No matter, where someone stood on the hill the sun and nature was always gorgeous. One of my first visits to this place I remember very vividly. We got up early and my father drove us to the hill. We laid down our blanket under the tree and leaned up against its massive trunk. After waiting for what seemed to be an eternity (which was really only a matter of minutes) the sun began to peer over the trees almost like a child looking over the sofa to see if anyone has discovered them in a game of hide and seek. As the sun slowly rose over the trees, and with it my excitement level. It seemed like I was almost in tune with nature. My eyes followed the sun from the point when it was a red-orange ball, and was not even over the trees, to when it became whitish yellow ball in the middle of the sky. As the sun rose and I began to awaken a little more and I headed closer to the waterââ¬â¢s edge.
Thursday, October 24, 2019
Detective stories have been very popular from the mid 1900ââ¬â¢s Essay
The victim in ââ¬ËThe Speckled Bandââ¬â¢ was Helen Stoner and the victim in ââ¬ËThe Gatewood Caperââ¬â¢ was Audrey, even though she kidnapped herself. Both the victims in the two stories were women and they had a problem with their fathers. Audreyââ¬â¢s grudge was mainly due to the loss of her mother. Both of their fathers had towering figures for example Harvey Gatewood is described as: ââ¬Å"He was a big bruiser of a man, something over 200 pounds of hard red flesh and a czar from the top of his bullet to the toes of his shoesâ⬠From this description we can see why Audrey had problems with her father, like when he lost his temper what could Audrey do with a man with that physique this also applied to Helen Stoner as Dr Roylott had the same temperament and physique. However, Dr Roylott was a stepfather. Ms Stoner was completely innocent unlike Audrey who took the law into her own hands instead of seeking help which Ms Stoner did. Ms Stoner was the more traditional as she was helpless and frightened of her father unlike Audrey was who kidnapped herself trying to hurt her father and from victim she turned to villain. The villain in ââ¬ËThe Speckled Bandââ¬â¢ was Dr Roylott and the villain in ââ¬ËThe Gatewood Caperââ¬â¢ was Audrey, as well as being the victim. Both of the villains were cunning and smart and they both had motives, but Dr Roylott was the more traditional as he was mean and aggressive. Dr Roylott also had a criminal history as Helen Stoner tells us: ââ¬Å"He beat his native butler to death, and narrowly escaped a capital sentence. â⬠Audrey wanted to hurt her father mentally and financially and had an accomplice, which wasnââ¬â¢t traditional as the villain should be alone. The ingredients required to be a villain are present in Dr Roylott and in Audrey as both had quarrels, but unlike Dr Roylott, Audrey didnââ¬â¢t commit an evil crime. Audrey just ran away from home because she was sick of being tied to her father Harvey Gatewood. She fooled everyone by claiming to have been kidnapped because she wanted revenge on her father by getting his money, but there was no real harm done. The villain, Dr Roylott in ââ¬ËThe Speckled Bandââ¬â¢ also added to my enjoyment of the story. Whenever his huge towering figure would arrive in the story I would get so tense and eager because I was worried that his actions would be fatal. This feeling made me feel as though I was inside the story. You couldnââ¬â¢t even identify who the victim and villain was in ââ¬ËThe Gatewood Caperââ¬â¢ let alone feeling you were a part of the story and there wasnââ¬â¢t enough background information which would make it easy to understand. Both the settings in the stories were good and added to the enjoyment of the story. ââ¬ËThe Gatewood Caperââ¬â¢ was set in the city in a rich area. However, ââ¬ËThe Speckled Bandââ¬â¢ setting was more isolated and mysterious and was more eerie as it was set in the countryside in a big mansion which for me is more traditional. The fact that there were gypsies and animals in the set made the story more enjoyable to read. The setting also added to my enjoyment of the story mostly because of the extras like the baboon, cheetah and gypsies which made the setting like an extra character in the story. The whole creepy and unusual feeling about Stoke Moran funnily made the setting more pleasant for me to read. The setting of ââ¬ËThe Gatewood Caperââ¬â¢ was good, but it didnââ¬â¢t get me involved with the plot. Both stories followed my anticipation of a classic detective story structure. ââ¬ËThe Speckled Bandââ¬â¢ and ââ¬ËThe Gatewood Caperââ¬â¢ had the crime being described at the beginning of the story. The story started with the report of the crime. But in ââ¬ËThe Speckled Bandââ¬â¢ I didnââ¬â¢t discover the problem straight away; I was made to wait for a while which built up suspense, as I was eager to discover the crime. Both stories had a period of uncertainty in the middle of the story where the investigation was proceeding and the detective began to gather evidence. In this section the main similarity between the two stories was the fact that the detective in each story had already solved the crime, but me, being the reader was made to wait until the end of the story to discover the outcome. Both stories also had a period where the case was solved and explained by the detective at the end. The main difference in the structure of the story between the two stories was the fact that unlike ââ¬ËThe Speckled Bandââ¬â¢ the criminals in ââ¬ËThe Gatewood Caperââ¬â¢ were not punished at the end of the story. I also found the structure of ââ¬ËThe Gatewood Caperââ¬â¢ hard to follow and confusing at times. Therefore I have chosen ââ¬ËThe Speckled Bandââ¬â¢s structure as being the more classic detective structure. The style of writing in ââ¬ËThe Speckled Bandââ¬â¢ was very detailed, well described and precise. But it moved slowly which led to building up suspense holding my interest. The language was very different, but both were formal and the vocabulary used was of early 1900ââ¬â¢s. ââ¬ËThe Speckled Bandââ¬â¢ had been written in Standard English unlike the ââ¬ËThe Gatewood Caperââ¬â¢ which was written in American English. ââ¬ËThe Gatewood Caperââ¬â¢s style of writing was less detailed, but it moved fast and got to the point quicker than ââ¬ËThe Speckled Bandââ¬â¢. Because it moved fast it built up the suspense much quicker, but it wasnââ¬â¢t that effective for me. The language was very different from ââ¬ËThe Speckled Bandââ¬â¢ as it was more modern and used vocabulary from the era we are in now. Overall ââ¬ËThe Speckled Bandââ¬â¢s style of writing was more like a classic detectives style of writing. ââ¬ËThe Gatewood Caperââ¬â¢ moved and started faster and tended to get to the point quicker, which is the style in which writers like to write these days. ââ¬ËThe Gatewood Caperââ¬â¢ was more modern as well as there wouldnââ¬â¢t have been a shopping mall in the time of Sherlock Holmes and there were not many agencies in traditional detective stories. The themes raised by ââ¬ËThe Speckled Bandââ¬â¢ were exactly what I had expected for a traditional detective story. The themes of a classic detective story were very straightforward and ââ¬ËThe Speckled Bandââ¬â¢ raised all these themes. For instance crime doesnââ¬â¢t pay. Dr Roylott didnââ¬â¢t fulfil his evil motive by killing Helen Stoner. Good beats evil; Sherlock Holmes was able to unravel the evil truth behind the death of Julia Stoner. The themes raised by ââ¬ËThe Gatewood Caperââ¬â¢ were exactly what I didnââ¬â¢t expect. Because good and evil were not easy to spot as the themes were not what they seemed and the whole truth doesnââ¬â¢t come out. It didnââ¬â¢t seem that Audrey got punished and the whole thing was a waste of police time as the only thing which was solved was a family problem. The morals of the story were quite different from what I expected as running away doesnââ¬â¢t solve problems is not a theme I would expect in a detective story. The theme raised by ââ¬ËThe Speckled Bandââ¬â¢ was another reason that made the story more enjoyable to read. The theme raised by ââ¬ËThe Speckled Bandââ¬â¢ was very common to most detective stories. In normal detective stories you may discover the theme that the guilty are punished after villains are sent to jail, this theme is discovered after a very normal and unimaginative event. But in ââ¬ËThe Speckled Bandââ¬â¢ this theme was demonstrated after a venomous snake had killed the villain, Dr Roylott, in mysterious circumstances. The way the themes were discovered added to the excitement of the story. Both stories had the same issue of the troubles in relationship between father and daughter. In ââ¬ËThe Speckled Bandââ¬â¢ Dr Roylott was more violent and bad tempered and even though he was their stepfather he was practically all the girls had. To save his money he killed Julia and attempted to kill Helen. On the other hand in ââ¬ËThe Gatewood Caperââ¬â¢ the relationship between father and daughter was less violent as Audrey looked for attention. A classic detective story would have the more violent storyline of ââ¬ËThe Speckled Bandââ¬â¢ as it is more explosive. This relationship issue made Dr Roylott more of a feared character and this induced more tension, which a classic detective story would want. In every category ââ¬ËThe Speckled Bandââ¬â¢ obeyed the rules applied to a classic detective story. The themes raised by ââ¬ËThe Speckled Bandââ¬â¢ were identical to themes raised by a classical detective story. Like a traditional detective story ââ¬ËThe Speckled Bandââ¬â¢ identified the hero, villain, and victim very clearly and they were very simple to follow. ââ¬ËThe Gatewood Caperââ¬â¢ was unable to do this even at the end of the story I was struggling to identify the villain and victim in the story, as there were two possibilities. For some people this is an enjoyment and they like reading this type of story, but for me I was lost in finding the villain or victim that I couldnââ¬â¢t understand the story. I personally preferred ââ¬ËThe Speckled Bandââ¬â¢ rather than ââ¬ËThe Gatewood Caperââ¬â¢, and there are multiple reasons for this. I found the plot of ââ¬ËThe Speckled Bandââ¬â¢ extremely entertaining and that it was wrapped up at the end. This is because events such as the snake built up suspense which made me eager to read on. The plot events were enjoyable to read because it was easy to build up a picture from the description. There were far more dramatic events full of suspense and drama in ââ¬ËThe Speckled Bandââ¬â¢ rather than ââ¬ËThe Gatewood Caperââ¬â¢ which had a lot less description. The main reasons I believe I personally preferred ââ¬ËThe Speckled Bandââ¬â¢ was better because the story had the ability to include interesting characters by using great description. It included many exciting events which built up suspense making me eager to read on and find out what happened. It also included puzzles and mysteries for me to solve during the story. All these factors fulfilled a description of a classic detective story. ââ¬ËThe Speckled Bandââ¬â¢ was like a classic detective story which is why I preferred this story to ââ¬ËThe Gatewood Caperââ¬â¢ story. To what extent did ââ¬ËThe Speckled Bandââ¬â¢ and Gatewood Caper match the expectations of a traditional detective story ?
Wednesday, October 23, 2019
Private Public partnership
Over the last few decades, our administration focuses on developing our economy where they can address the problem of poverty and of modernization on the Philippines. As our country is still developing and the government resources are limited, new ideas and strategies such as partnerships are needed. This highly evolved development strategy is nowadays termed as Public Private Partnerships (Pops), is a cooperative venture between the public and private sectors in the provision of goods or services which is traditionally provided by the state (Recite &Affable, 2006). The public and private sectors have common goals and their partnership can take advantage of the separate strengths of each to achieve their objectives. On the Executive Summary of Proceedings about Public-Private Partnerships in the Social Sector they elaborated that the private sector exists to make a profit and applies market-based solutions to problems while the public sector attempts to ensure equity and access for c itizens and redresses problems of market failure (Asian Development Bank Institute, 1999).On view of this program, there will e greater opportunities that will come in the future especially in developing our country economically. The program caters mainly to the needs of the public users and also it creates an environment where there will always be consistent growth. Many are still skeptical and in fear of the Private Public Partnerships. Mainly because of there is a conflict of interest between the public and private sector and also there is a chance of higher transaction cost due to its long term contract. An article entitled, For Mutual Benefit-the Advantages and Challenges of Public-PrivatePartnerships cited, the state, that often provides the fixed assets and even the financing for APP is interested in improving the delivery of public goods and services; while on the other hand, private firms are concerned with enhancing profitability and the welfare of their stockholders (FIT Consulting, Inc. , 2012). On this sample risk, it shows that both sectors have different objectives which create a negative impact on the status of nation's social and economic health. In this partnership, the government and the public sector must work together to establish quality standards that will help OTOH of them in the long run.Real partnerships will require Joint planning and discussions and better specifications of the potential roles for each other is needed (Asian Development Bank Institute, 1999). Therefore; accountability, monitoring and transparency by both the public and private sector is really significant. On the conference in Tokyo, Dry. Patricia Craig (Asian Development Bank Institute, 1999) highlighted the urgency of solving some of the problems of the social sector today because of the intensifying pressures of population ageing and globalization on this sector.With the ever increasing population, greater expectations and demands from the society, our government is facing an increasing pressure to deliver new and improved services with only limited resources available. Thus, the private sectors who are much more knowledgeable in terms of market rules and the ability to deliver projects on time can greatly aid the government in providing the services to the public in a way that benefits the people and delivers economic development.Our country today experiences a so called ââ¬Ëinfrastructure deficit', evidenced by congested odds, deteriorated schools, lack of facilities in the hospitals, poorly maintained transit and water treatment systems, and other infrastructure assets which are either non-existent or in urgent need of repair (United Nations Economic Commission for Europe, 2008). Because of the increasing shortage of government funds as evidenced by lack of facilities and manpower, our country critically requires a more serious look at the APP option.With the help of the partnership program, the problems that our country is facing wil l be addressed properly since there will be proper distribution of susceptibilities between the private and public sectors. And as a developing country trying to approximate good governance, the Philippines has already properly characterized the private sector is its most potent partner in meeting said formidable infrastructure challenges, through Pops (Recite & Affable, 2006).Public Private Partnership will surely addressed the challenges of reducing poverty and establishing a more rapid developing system. The program will surely be a reliable strategy that can efficiently deliver its services. Sine there will be proper identification of the needs of our country, there will also be proper implementation of all projects planned by our government with the help of the private sector. This can too produce more Job opportunities for Filipinos since there will be more infrastructure projects so manpower will also be required.Also, the needs of the people will be properly catered since fa cilities are being improved and properly maintained. The APP agenda in various infrastructure sectors and development projects, is aimed at facilitating trading and investments thereby reinforcing the amounts investment climate and its competitiveness in the Asia and with the rest of the world (Recite & Affable, 2006). The Philippines is regarded as an ideal site for investment because of our rich natural resources, highly educated people and a high standard lifestyle at a low cost.With the help of APP, our country will invite more foreign investors which results to an economic growth. Private-public Partnership is a program that will provide greater opportunities in developing our country economically today and in the future. Because the program caters to the needs of the people, as a result, it creates an environment where there is growth and prosperity. Though many doubt the effectiveness of partnership between the private and public sector, but a change from the traditional welf are state is a moving step towards productivity.In reality, markets are imperfect and government may not always work in favor of the most disadvantaged but each sector can do certain things well. In order to have a good governance the private sector needs to consider its social responsibility while the public sector needs to create the appropriate legal and ejaculatory structures as well as a democratic and participatory process in decision making (Recite & Affable, 2006). Real partnerships will involve Joint planning by the public and private sectors, where a culture of true cooperation will need to develop.
Tuesday, October 22, 2019
The Crucible - Witch Trials Essays - Salem Witch Trials, Free Essays
The Crucible - Witch Trials Essays - Salem Witch Trials, Free Essays The Crucible - Witch Trials In The Crucible by Arthur Miller, the madness of the Salem witch trials is explored in great detail. There are many theories as to why the witch trials came about, the most popular of which is the girls' suppressed childhoods. However, there were other factors as well, such as Abigail Williams' affair with John Proctor, the secret grudges that neighbors held against each other, and the physical and economic differences between the citizens of Salem Village. From a historical viewpoint, it is known that young girls in colonial Massachusetts were given little or no freedom to act like children. They were expected to walk straight, arms by their sides, eyes slightly downcast, and their mouths were to be shut unless otherwise asked to speak. It is not surprising that the girls would find this type of lifestyle very constricting. To rebel against it, they played pranks, such as dancing in the woods, listening to slaves' magic stories and pretending that other villagers were bewitching them. The Crucible starts after the girls in the village have been caught dancing in the woods. As one of them falls sick, rumors start to fly that there is witchcraft going on in the woods, and that the sick girl is bewitched. Once the girls talk to each other, they become more and more frightened of being accused as witches, so Abigail starts accusing others of practicing witchcraft. The other girls all join in so that the blame will not be placed on them. In The Crucible, Abigail starts the accusations by saying, "I go back to Jesus; I kiss his hand. I saw Sarah Good with the Devil! I saw Goody Osburn with the Devil! I saw Bridget Bishop with the Devil!" Another girl, Betty, continues the cry with, "I saw George Jacobs with the Devil! I saw Goody Howe with the Devil!" >From here on, the accusations grow and grow until the jails overflow with accused witches. It must have given them an incredible sense of power when the whole town of Salem listened to their words and believed each and every accusation. After all, children were to be seen and not heard in Puritan society, and the newfound attention was probably overwhelming. In Act Three of The Crucible, the girls were called before the judges to defend themselves against the claims that they were only acting. To prove their innocence, Abigail led the other girls in a chilling scene. Abby acted as if Mary Warren sent her spirit up to the rafters and began to talk to the spirit. "Oh Mary, this is a black art to change your shape. No, I cannot, I cannot stop my mouth; it's God's work I do." The other girls all stared at the rafters in horror and began to repeat everything they heard. Finally, the girls' hysterics caused Mary Warren to accuse John Proctor of witchcraft. Once the scam started, it was too late to stop, and the snowballing effect of wild accusations soon resulted in the hanging of many innocents. After the wave of accusations began, grudges began to surface in the community. Small slights were made out to be witchcraft, and bad business deals were blamed on witchery. Two characters in The Crucible, Giles Corey and Thomas Putnam, argue early on about a plot of land. Corey claims that he bought it from Goody Nurse but Putnam says he owns it, and Goody Nurse had no right to sell it. Later, when Putnam's daughter accuses George Jacobs of witchery, Corey claims that Putnam only wants Jacobs' land. Giles says, "If Jacobs hangs for a witch he forfeit up his property - that's law! And there is none but Putnam with the coin to buy so great a piece. This man is killing his neighbors for their land!" Others also had hidden motives for accusing their neighbors. Once the accusations began, everyone had a reason to accuse someone else which is why the hangings got so out of hand. The wave of accusations can be likened to mass hysteria, in which the people involved are so caught up that they start having delusions of neighbors out to do them harm. One of the main
Monday, October 21, 2019
North Pacific Right Whale Facts
North Pacific Right Whale Facts The North Pacific right whale is a critically endangered species. Along with the North Atlantic right whale and the southern right whale, the North Pacific right whale is one of three species of living right whales in the world. All three species of right whale are similar in appearance; their genetic pools are distinct, but they are otherwise indistinguishable. Fast Facts: North Pacific Right Whale Scientific Name: Eubalaena japonicaAverage Length: 42ââ¬â52 feet Average Weight: 110,000ââ¬â180,000 pounds Lifespan: 50ââ¬â70 years Diet: CarnivorousRegion and Habitat: Northern Pacific oceanà Phylum: ChordataClass: Mammalia Order: ArtiodactylaInfraorder: CetaceaFamily: BalaenidaeConservation Status: Critically endangeredà Description North Pacific right whales are robust, with a thick blubber layer and a girth sometimes exceeding 60 percent of their body length. Their bodies are black with irregular patches of white, and their flippers are large, broad and blunt. Their tail flukes are very broad (up to 50 percent of their body length), black, deeply notched, and smoothly tapered. Southern right whale breaches the surface off Puerto Piramedies, Argentina. Paula Ribas / Getty Images Female right whales give birth once every 2 to 3 years, starting around age 9 or 10. The oldest known right whale was a female who lived at least 70 years. Calves are 15ââ¬â20 ft (4.5ââ¬â6 m) long at birth. Adult right whales range between 42ââ¬â52 ft (13ââ¬â16 m) in length on average, but they can reach over 60 ft (18 m). They weigh over 100 metric tons. About one-fourth to one-third of a right whales total body length is the head. The lower jaw has a very pronounced curve and the upper jaw has 200ââ¬â270 baleen plates, each narrow and between 2ââ¬â2.8 meters long, with fine fringing hair.à Whales are born with patchy irregular spots, called callosities, on their faces, lower lips, and chin, above the eyes and around the blowholes. The callosities are made of keratinized tissue. By the time a whale is several months old, its callosities are inhabited by whale lice: small crustaceans who clean and eat algae off the whales body. Each whale has an estimated 7,500 whale lice. Habitat North Pacific right whales are among the most endangered whale species in the world. Two stocks are known to exist: western and eastern. The western North Pacific right whale lives in the Sea of Okhotsk and along the western Pacific rim; scientists estimate there are about 300 of them left. The eastern North Pacific right whales are found in the eastern Bering Sea. Their current population is believed to be between 25 and 50, which might be too small to ensure its persistence.à North Pacific right whales migrate seasonally. They travel northward in spring to high-latitude summer feeding grounds, and southward in fall for breeding and calving. In the past, these whales could be found from Japan and northern Mexico northward to the Sea of Okhotsk, the Bering Sea and the Gulf of Alaska; today, however, they are rare.à Diet North Pacific right whales are baleen whales, meaning that they use baleen (toothlike bone plates) to filter out their prey from sea water. They forage almost exclusively on zooplankton, tiny animals that are weak swimmers and prefer to drift with the current in massive groups. North Pacific right whales prefer large calanoid copepods- are crustaceans about the size of a grain of rice- but they will also eat krill and larval barnacles. They consume whatever gets picked up by the baleen.à Feeding takes place in the spring. In higher latitude feeding grounds, North Pacific right whales locate large surface patches of zooplankton, then swim slowly (about 3 miles per hour) through the patches with their mouths wide open. Each whale needs between 400,000 and 4.1 million calories each day, and when the patches are dense (about 15,000 copepods per cubic meter), whales can fulfill their daily needs in three hours. Less dense patches, around 3,600 per cm3, require a whale to spend 24 hours feeding in order to meet their caloric needs. The whales will not forage on densities below 3,000 per cm3.à à Although most of their visible feeding takes place near the surface, the whales can dive also deeply to forage (between 200ââ¬â400 meters below the surface). Adaptationsand Behavior Scientists believe that right whales use a combination of memory, matrilineal teaching, and communication to navigate between feeding and wintering grounds.à They also use an array of tactics to find plankton concentrations, relying on water temperatures, currents, and stratification to locate new patches. Right whales produce a variety of low-frequency sounds described by researchers as screams, moans, groans, belches, and pulses. The sounds are high amplitude, meaning they are detectable across long distances, and most range below 500 Hz, and some as low as 1,500ââ¬â2,000 Hz. Scientists believe that these vocalizations may be contact messages, social signals, warnings or threats.à à Throughout the year, right whales create surface active groups. In these groups, a lone female vocalizes a call; in response, up to 20 males surround her, vocalizing, leaping from the water, and splashing their flippers and flukes. There is little aggression or violence, nor are these behaviors necessarily connected with courtship routines. Whales only breed at certain times of the year, and females give birth in their wintering grounds nearly synchronously. Sources Gregr, Edward J., and Kenneth O. Coyle. The Biogeography of the North Pacific Right Whale (Eubalaena japonica). Progress in Oceanography 80.3 (2009): 188ââ¬â98.à Kenney, Robert D. Are Right Whales Starving? Right Whale News 7.2 (2000).à -. Right Whales: Eubalaena . Encyclopedia of Marine Mammals (Third Edition). Eds. Wà ¼rsig, Bernd, J. G. M. Thewissen and Kit M. Kovacs: Academic Press, 2018. 817ââ¬â22.à glacialis, E. japonica, and E. australisÃ
irovic, Ana, et al. North Pacific Right Whales (Eubalaena Japonica) Recorded in the Northeastern Pacific Ocean in 2013. Marine Mammal Science 31.2 (2015): 800ââ¬â07.
Sunday, October 20, 2019
Glossary of Organic Chemistry Terms
Glossary of Organic Chemistry Terms This is an organic chemistry glossary. Look up definitions of common and important organic chemistry terms. ab initio abrasive absolute alcohol absolute error absolute temperature absolute uncertainty absorbance absorption absorption cross section absorption spectroscopy absorption spectrum absorptivity accuracy acetal acid acid anhydride acid-base indicator acid-base titration acid catalysis acid dissociation constant - Ka acidic solution activated complex activation energy - Ea activity series actual yield acute health effect acylation acyl group acyl halide adsorption aerosol alcohol alcoholate aliphatic amino acid aliphatic compound aliphatic hydrocarbon alkali metal alkaline alkalinity alkanoylation alkene alkenyl group alkoxide alkoxy group alkylate alkylation allotrope alloy alpha decay alpha radiation amide amine amine functional group amino acid ammonium amorphous amphoteric oxide amu angular momentum quantum number anion androgen anhydrous anode antibonding orbital anti-Markovnikov addition anti-periplanar aqueous aqueous solution aromatic compound Arrhenius acid Arrhenius base aryl atom atomic mass atomic mass unit (amu) atomic number atomic radius atomic weight autoionization Avogadros Law Avogadros number azeotrope azimuthal quantum number azo compound
Saturday, October 19, 2019
Website Migration Project Term Paper Example | Topics and Well Written Essays - 4250 words
Website Migration Project - Term Paper Example To ensure the success of this project, the execution of the project is done by strictly following the system development life cycle (SDLC). System development life cycles ensures that the user and functional requirements of any project are met. Using the system development life cycle, there is standardization and structuring of all process involved in the system development. Using these standardized and structured processes, the development of any given system in stages which follow the route of feasibility study, planning of the system, development of concept, designing, development of the system, system integration, system testing, and finally system deployment and maintenance are achieved. This paper is aimed at providing a viable solution that will facilitate moving a website from external servers to internal servers with minimum downtime, redesigning of the existing website to incorporate more functionalities, designing a viable plan that can be used as a disaster recovery solution in cases of future failures. The process employs all the phases of system development life cycle to ensure efficient execution of the project. System development life cycle phasesââ¬â¢ use is to facilitate execution of the project in the shortest time possible using a structured manner, despite the fact that web development process is unstructured. The project will focus on the legibility and coherence of the website. Coherence ensures users of the website are able to navigate through the site with ease, and also, the users are able to understand the content of the website, i.e. understandability. The websites legibility focus on making the website distinctive and memorable to the users. Moreover, the systems scalability, robustness and modifiability are addressed. Putting together all design purposes and the above stated factors, the structured development process will follow a defined route as outlined below. From the description given
Friday, October 18, 2019
Diabetes type 2 Essay Example | Topics and Well Written Essays - 1250 words
Diabetes type 2 - Essay Example It is a condition in which the body fails to produce cells that are responsible for producing insulin leading to a condition known as insulin resistance. (Hopkins, 2010). Insulin is a hormone which is produced by the pancreas in our body and is mainly responsible for regulating the conversion of sugar into energy as the body fails to metabolize glucose in a proper way. Due to insulin resistance or failure of body cells to use insulin, glucose deposits in the blood instead of going into cells which mostly leads to many complications. (Mycek, 2007). SYMPTOMS: It is indicated that type 2 diabetes occurs due to a combination of environmental and genetic factors .Some of the symptoms of diabetes mellitus 2 include increased feeling of thirst and frequent urination, the urge to eat more, darkened patches of skin, and delayed healing of wounds and skin scratches, blurred vision accompanied by fatigue and an observable loss in weight (Hans, 2007). PREVALENCE OF TYPE 2 DIABETES IN AUSTRALIA: Studies have shown that statistics of diabetes mellitus type 2 doubled in Australia in the last two decades 16 % to 20 % of people suffering from diabetes mellitus type 2 have shown to exhibit lesser abnormalities related to tolerance of glucose level. . (Dowse GK, Gareebo H & Zimmet PZ 2009). Moreover a large population residing in Australia is unaware of the fact that they have diabetes mellitus type 2 and also 55 % of the population of Australia suffering from diabetes mellitus type 2 exhibit obesity, an increase in blood pressure making them hypertensive and large population also have a family history of diabetes. Researches and data gathered have shown reduction in prevalence of type 2 diabetes mellitus by following proper dietary plans. (Shaw, 2003). PREVALENCE OF TYPE 2 DIABETES IN UNITED STATES OF AMERICA: According to various studies conducted during the year 2010 on prevalence of type 2 diabetes mellitus in the United States of America, it was reported that about 25.8 mill ion citizens of U.S have diabetes mellitus type 2 out of which 10.8 million populations comprises of women older than 20 years, 13 million populations comprised of men who were older than 20 years, 10.9 percent population suffering from type 2 diabetes was the older age group ranging between ages of 60 years to 70 years. Type 2 diabetes was ranked as the fifth most serious cause of disease leading to death of people in the United States of America during the year 2010 by the American Diabetes Association. (Hopkins, 2010) PREVALENCE OF TYPE 2 DIABETES IN A DEVELOPING ASIAN COUNTRY: Prevalence of diabetes mellitus type 2 is increasing at an alarming rate in India and is one of the major health issues over there. Type 2 diabetes mellitus has been reported to affect a great number of the population in India in last some years. According to several researches carried out globally and at national level it was reported that approximately 61.3 million people in India had diabetes in the yea r 2011 and it is feared that this figure might reach to 101.2 million by the year 2030. (Avasthi, 2005) ROLE OF HEALTH PROFESSIONALS IN AUSTRALIA FOR TREATMENT OF DIABETES MELLITUS TYPE 2: DIAGNOSIS: In order to confirm that a specific person has been affected by diabetes mellitus
Study case (Information Resources Management) Example | Topics and Well Written Essays - 500 words
(Information Resources Management) - Case Study Example If we talk about the governance in any particular ministry or department then there is a need of achieving the efficiency in the processes. This efficiency can be achieved by implementing different technological tools and EA is at the top of list of those technological tools. If the Government or the CIO wants to make investment to increase the efficiency of the ministries then a better option is to develop the tradition of implementing the EA processes in them so that the investments can be fully utilized to achieve the greatest value. The suggestion of investing in the implementation of the technological tools and tactics is really a valuable option for the businesses. While implementing EA process within the departments, there is a need to develop an integral process of governance, therefore EA can be effective at its maximum (Grembergen 1). Architecture governance is really needed because it helps to manage and control all the processes and the activities throughout the enterprise. Many of the researchers define different aspects of the process of governance; if the enterprise fully implements all of these governance processes then it will be more effective and efficient from investment point of view. This may include corporate governance (which refers towards the streamline processes at the entire corporate level), technology governance (the advancement in the technological tools but according to proper resourcing) , IT governance (proper use of different software tools and databases )and architecture governance (whole ER processes). If all these governance processes are fully implemented in the EA system then it will be beneficial to get the m aximum of the efficiency of the EA system. The implementation of the EA processes can achieve the maximum of its efficiency in the capital planning process of the Government. The reason is
Thursday, October 17, 2019
Emphysema Research Paper Example | Topics and Well Written Essays - 2500 words
Emphysema - Research Paper Example According to National Institute of Health, NIH (2014), COPD encompasses varied lung diseases that include emphysema, chronic obstructive airways disease and chronic bronchitis. This paper focuses on emphysema, the main type of COPD as noted by Klaassen (2013). Emphysema is a type of chronic lung disease. It normally causes people to have breathing difficulties due to blowing out air being limited and majorly affects people between the ages of 45 and 60 (NIH, 2014). It is estimated that over 10 million people in America are likely to have emphysema with 2011 having had 4.7 million Americans diagnosed with the condition according to statistics from the American Lung Association (2013). Historically, men exhibit higher prevalence for emphysema than women, though the past five years has seen the prevalence in women increase by 63% while prevalence among men has decreased by 6%. Together with bronchitis, emphysema is ranked fourth among the leading causes of death in America, killing abou t 16,242 people every year. The pathogenesis of emphysema largely remains unclear. However, it has been generally accepted that emphysema occurs when delicate linings of air sacs which occur in the lungs get irreversibly damaged. It involves the inflammatory changes that occur in small airways accompanied by loss of small vessels and alveolar septal structures. This, according to NIH (2014), occurs due to gradual destruction of air sacs in the lungs making the patient slowly deprived of breath. There is also the postulate by Nici and ZuWallack (2012) that emphysema results from protease-antiprotease imbalance. For proper maintenance of lungs, there needs to be a delicate balance in the activity of protease and antiprotease. Interference with this balance results to lungs being destroyed or inappropriately repaired, eventually leading to emphysema. Additionally, the destruction of elastin fragments resulting
LAN Networks Coursework Example | Topics and Well Written Essays - 250 words
LAN Networks - Coursework Example They will use the Ethernet cables to connect all the computers, DVR, VoIP phone, and game console to the network. They can then hook the router to the modem to connect to the internet. In this way all the devices can access the internet provided that the router is configured and allows them. The justification for the above requirements is that the family is in possession of several devices that need internet connectivity. The recommended devices will make this possible. The modem is connected to the router so that the router access the internet through the ISP assigned IP address. This dynamically assigns each of the devices IP addresses thus enabling the m to access the internet. The enterprise-level company will require a large server room with several servers, routers, bridge, and network switches to connect to the several hundred business users of their network. Each device will connect to the switches via wired or wireless access. Wired access will include Ethernet cable, at least a cat5e twisted pair of the fiber optic Ethernet cable. The network switch will be used for routing information from their network to the internet. The routers will be the gateway to the network thus will be used to connect the enterpriseââ¬â¢s LAN and the internet thus giving them access to a good firewall. The bridges will be used to direct the traffic over the network. The three most common types of server applications are email servers, List server, and Telnet servers. Email servers are computers that keep records of each and every mail that comes in and leaves the network. List servers are computers that for the users or one way list that gives announcements, newsletters or even advertising. Telnet servers are computers that help the users to sign in to host computers and perform tasks as if they are working on their computers. Even though the servers can be combined, I will not combine all of them. I will implement two
Wednesday, October 16, 2019
Emphysema Research Paper Example | Topics and Well Written Essays - 2500 words
Emphysema - Research Paper Example According to National Institute of Health, NIH (2014), COPD encompasses varied lung diseases that include emphysema, chronic obstructive airways disease and chronic bronchitis. This paper focuses on emphysema, the main type of COPD as noted by Klaassen (2013). Emphysema is a type of chronic lung disease. It normally causes people to have breathing difficulties due to blowing out air being limited and majorly affects people between the ages of 45 and 60 (NIH, 2014). It is estimated that over 10 million people in America are likely to have emphysema with 2011 having had 4.7 million Americans diagnosed with the condition according to statistics from the American Lung Association (2013). Historically, men exhibit higher prevalence for emphysema than women, though the past five years has seen the prevalence in women increase by 63% while prevalence among men has decreased by 6%. Together with bronchitis, emphysema is ranked fourth among the leading causes of death in America, killing abou t 16,242 people every year. The pathogenesis of emphysema largely remains unclear. However, it has been generally accepted that emphysema occurs when delicate linings of air sacs which occur in the lungs get irreversibly damaged. It involves the inflammatory changes that occur in small airways accompanied by loss of small vessels and alveolar septal structures. This, according to NIH (2014), occurs due to gradual destruction of air sacs in the lungs making the patient slowly deprived of breath. There is also the postulate by Nici and ZuWallack (2012) that emphysema results from protease-antiprotease imbalance. For proper maintenance of lungs, there needs to be a delicate balance in the activity of protease and antiprotease. Interference with this balance results to lungs being destroyed or inappropriately repaired, eventually leading to emphysema. Additionally, the destruction of elastin fragments resulting
Tuesday, October 15, 2019
Five Forces Anaysis Of Dell Inc Essay Example | Topics and Well Written Essays - 2500 words - 1
Five Forces Anaysis Of Dell Inc - Essay Example This research paper presents five forces analysis of Dell Inc to analyze major factors and competitive elements and to assess how successful and effective is the company. The five force analysis, introduced by Michael Porter, can be used as a tool to measure the competitive rivalry and to assess whether the company has achieved sustainable competitive advantages or not. The five force Model The modern economy and international business environments have recently been largely influenced by various critical factors including globalization, fierce competition and advanced technology etc and therefore, as Michael Porter argued, business strategy equates to how a firm competes with other firms in the industry. According to his findings, strategy is not just a series of models and methods at corporate level, but rather it includes analyzing potential entrants, suppliers, buyers, substitutes and competitors (Stahl and Grigsby, 1997, p. 145). The five forces model has widely been applied as an important functional area of management and business academics. Almost all managers and large companies depend on porterââ¬â¢s five force analysis to find their marketing strengths and competitive advantages. Harvard professor Michael E. Porter has developed Five Force model in 1980s to help companies identify what specific forces determine the profits in an industry. Any particular firm in an industry faces various forces within the industry affecting the profitability significantly. Some of such determining factors are competitive rivalry, potential entrants, threat of substitutes, bargaining power of buyers as well as suppliers. If a business is able to understand and analyze all these factors, then it would also be able to develop a business-level strategy to allow business either to take advantage or protect the business from these forces (Ahlstrom and Bruton, 2009, p. 131). Porter argued that each of the five forces determines how the firm would be able to perform in its marketing landscape. The stronger each of these forces is, the more limited is the ability of well-established companies to increase prices and earn greater amounts of profits. Competition rivalry, substitutes, pot ential entrants, power of suppliers and buyers thus directly impact the profitability as well as effective and smooth functioning of the business (Hill and Jones, 2007, p. 45). The five factors can greatly influence various aspects of the strategies of a company. for instance, if consumers of the company have considerable bargaining power, it will largely impact the business strategy of that company. Similarly, if more number of suppliers are available and there is increased possibility of getting better supplies for comparatively cheaper amounts, the company will be more likely to achieve relatively better competitive advantage as well (Kurtz, MacKenzie and Snow, 2009, p. 57). Competitive rivalry is one of the five forces and is influenced by the other four forces. A company that operates in a market where there are larger numbers of substitutes, more powerful buyers and suppliers and there are chances for new entrants faces relatively more severe competition. A company would be ab le to flourish if it is able to fence off new entrants and substitutes. Dell Inc: Company Profile For several
Monday, October 14, 2019
Communication an organisations Essay Example for Free
Communication an organisations Essay This assessment is to demonstrate an understanding and appreciation of the topics taught in leading and motivating a team effectively module of the ILM Level 3 Course in Leadership and Management. The document will be split into two main sections, the first section will focus on how to communicate an organisations vision and strategy to the team as well as provide an analysis on its importance. The second section will look at the role motivation in the development of a team. Section 1: How to communicate an organisations vision and strategy to the team One of the definitions of the word team (in its verb form) is, come together to achieve a common goal (Oxford University Press, 2014). It is this common goal or purpose that turns a group of individuals into a team without a common purpose or goal to strive toward a team cannot function effectively. For example in a football team each player needs to know their place and role in the team, but also the strategy and vision for wider team, is the team an attacking team, a defensive team, do they attack via the wings etc. without knowing the common goal of the team the players will look to their own role and not know how to support the wider team and therefore are less likely to achieve their common goal. The same holds true within an organisation not just at an individual person level but at a departmental level, if teams do not know the wider vision or strategy of the organisation they can become siloed and retreat upon themselves and just focus on delivering the ââ¬Å"day jobâ⬠rather than support the organisation in a more holistic role. With the above in mind, itââ¬â¢s clear to see that for a team to perform it needs clarity in its purpose, and from a business point of view this should be given by the vision and strategy of the organisation. The vision tells us what the organisation wants to be, it doesnââ¬â¢t focus on the how that is the role of the strategy, the vision is a simple statement of what it wants to achieve. Below is an example vision statement from Amazon. Our vision is to be earths most customer-centric company where customers can find and discover anything they might want to buy onlineâ⬠¦ at the lowest possible prices. Itââ¬â¢s a fairly short statement but allows staff and managers to know that the focus of Amazon is on three things â⬠¢Being Customer Focused â⬠¢Providing Online Services â⬠¢Cost effectiveness (for Amazon and the customer) With the vision clearly stated it helps teams understand the direction in which the organisation wants to go, the next step is to explain how team fits in this vision and will help deliver it. Once the vision of an organisation is understood, itââ¬â¢s important about going about explaining how it will achieve this and this is referred to as the strategy. The strategy should be a series of plans that detail how elements of the vision will be achieved; for example Amazonââ¬â¢s vision could be split into two strategies; being customer centric and providing online services with cost effectiveness being a theme that runs across both strategies. These plans would then be broken down into more tactical detail such as action plans and SMART objectives to be carried out an operational level. For example a call centre team will have several objectives/KPI such as Calls answered in less than 5 seconds in a given month or First Time Call Resolution 95% (Year to Date), which without much explanation simply look like tools to ensure staff are doing their jobs when in fact they are SMART objectives that relate to the customer focused strategy of Amazonââ¬â¢s vision and how effec tively that strategy is working. It is the performance of these objectives that dictate future strategy, poor performance may result in a change of strategy (i.e. outsourcing) where as good performance could result in the current strategy being maintained or even expanded (i.e. expansion to provide alternative services) and as such it is vital that staff are informed not only of their objectives and targets but how and why they exist, and what their overall effect on the business is. As we can see the role the vision and strategy plays in the performance of a team or individual is huge but it can be a two edged sword if the vision and strategy are either poorly communicated, misunderstood or simply unknown. As such communication is key, to ensure that the common sense and purpose that the vision and strategy provides is embedded and understood. There are many methods of communication available within an organisation in aid of establishing a common purpose, but the first method is that the vision statement should be one that staff and customers can relate too andà understand, if the vision doesnââ¬â¢t make sense the job to communicate it to staff will be twice as hard. A good basis for ensuring good communication is using the seven principles of communication; to ensure the message is clear, concise, concrete, correct, coherent, complete and naturally courteous. Once the message has been developed, itââ¬â¢s a matter of choosing the medium in which it is delivered; there are various methods such as email, telephone, meetings, seminars, presentation, 1-2-1s, newsletters all of which to be effective must be used at the right time and place. As the vision is a supposed to provide a common purpose and understanding of what the company wants to be, it suggests that the best way to communicate this message is via more group/communal methods such as Team meetings, Away days or newsletters where the same message can be relayed to multiple staff at a time and avoids confusion or contamination of the key messages trying to be delivered, that can occur in mores personal communications such as 1-2-1 meetings. For example a team meeting where a contact centre manager for Amazon relays the vision of the company and how the teamââ¬â¢s work fits in and helps deliver it to their 10 staff, is likely to be more effective than having 10 1-2-1 sessions in which they deliver they try to deliver the same message which is likely to alter between sessions due to personal relationships coming into play, more two way conversation disrupting the flow of the message, the recipient choosing to understand the message how they see it rather than how it was said and then finally the confusion that can occur when team members compare conversations. This is not to say that group communication is always the best method to use as it does also have its downsides such as; itââ¬â¢s less likely people will ask questions in team/group meetings and could result in misunderstandings/confusion, if the person delivering the message is not clear and does not understand the message being delivered it will have a negative impact on the recipients, they can become side tracked by issues that arise during the meeting and people forget the message being delivered. My own skills actually lend themselves to small groups or 1-2-1 sessions as I struggle to manage wider groups at times, especially when the meeting goes off topic or several conversations start within the meeting. However as I only manage two staff at the moment this hasnââ¬â¢t hampered my ability to communicate a common sense of purpose to my staff as I have my own concepts on what our role is in theà business, however as highlighted in our learner session in July we did struggle as a group to find the groupââ¬â¢s vision and strategy, which in itself is a failing in that without knowing the true vision and strategy of the business how can I communicate that to my staff and could potentially be providing them with a purpose that is counter to the organisations own goals. In reflection this had led me to book in some time to read the new business plan, and in readiness Iââ¬â¢ve booked a team meeting together with my staff to go over it and highlight were we as a team fit in it. Iââ¬â¢ve also took some time recently to review our action plans and KPIââ¬â¢s on Covalent, which is a software we use to link action plans and KPIââ¬â¢s together to strategies to see how our objectiv es are linked to the wider organisation and through that hopefully provide better clarity and coherent information to my staff. Hopefully my management of meetings will improve through this course, as one of the modules in on managing meetings effectively. In conclusion I use to think my communication skills were quite good, however through this exercise Iââ¬â¢ve noted that while my method of delivery and communication style may be good it doesnââ¬â¢t mean much if you donââ¬â¢t truly know the message you are trying to convey which until Iââ¬â¢m up to speed on the business plan and our place in it I canââ¬â¢t say I know what that message should be without retreating into the ââ¬Å"day jobâ⬠which as mentioned at the beginning is a symptom of a team who doesnââ¬â¢t know the organisations vision or strategy. Section 2: Know how to motivate and develop the team Section 2.1: Describe the main motivational factors in a work context and how these may apply to different situations, teams and individuals. There are multiple models and theories for motivation such as Maslowââ¬â¢s hierarchy of needs, Alderfers ERG theory, Acquired Needs Theory by McClellan and Two Factor Theory by Hezberg to name a few and while most can be used to explain motivational factors in a work context some such as Maslowââ¬â¢s and Alderferââ¬â¢s theory require more adaption or to make it fit as such Iââ¬â¢ll be using Hezbergââ¬â¢s Two factor theory to describe the main motivational factors in the work context. According to Herzberg, two kinds of factors affect motivation,à and they do it in different ways: Hygiene factors: These are factors that are taken for granted and can be seen as having no positive satisfaction by themselves, however if they were taken away would cause a dramatic down turn in morale and motivation. An example is a policy of free tea and coffee for staff by itself unlikely to motivate staff but if it was removed would have a negative impact. Motivator factors: These are factors whose presence motivates. Their absence does not cause any particular dissatisfaction, it just fails to motivate. An example would be recognition at work for a job well done, achieving a promotion. Looking at the above it would seem that simply applying the motivator factors would cause an increase in motivation and simply ensuring the hygiene factors stayed in place is the sure fire way to succeed in motivating your staff, however the below example shows how by applying one rule to an individual can affect the team as a whole. Person A is doing a good job and as such you wish to increase motivation by recognising their work, which you do by offering a promotion/raise or bonus, this however can impact on the rest of the team as Pay and Benefits also come under Hygiene factors and as such by rewarding one and not everyone in the team this can cause a demotivation or job dissatisfaction. Section 2.2: Explain the importance of a leader being able to motivate teams and individuals and gain their commitment to objectives. Section 2.3: Explain the role that the leader plays in supporting and developing the team and its members and give practical examples of when this will be necessary
Sunday, October 13, 2019
How Is Inactivity And Obesity Effecting Children Young People Essay
How Is Inactivity And Obesity Effecting Children Young People Essay The rise of inactivity and its consequences The prevalence of sedentary lifestyles is increasing in America and much of the developed world. In the US (our core geographic area of focus for this project) this trend coupled with poor eating choices has notably manifested itself in rising obesity rates across the country over the past two decades as depicted in Exhibit 1. As of 2008, over 68% of Americans were categorized as being overweight, with nearly half of that group being defined as obese or morbidly obesei. Between 1980 and 2002 overweight rates for children aged 6 11 more than doubled from 7% to 16%ii. Today that number is estimated to be closer to 20%iii. Shortened life spans. More than 14% of deaths in the US in 2003 resulted from obesity related conditions; and Diminished motivation to be active. Being overweight or obese makes physical activity more challenging, thus requiring greater commitment and effort to be active compared to a healthy weighted individual. The more overweight people become due to reduced levels of activity the less likely they are to engage in future activity. Furthermore, obesity is often tied to depression which causes individuals to experience lower levels of energy and motivationiv. Teenagers the gateway to addressing rising inactivity levels . The number of years a consumer leads an active life; The variety of sports or fitness related activities the consumer engages in over those years; and The products that the two factors above drive demand for. In order to optimize across all drivers we honed in on teenagers (primarily 13-15) as our focus segment. We view other groups, such as adults and, retirees, and so forth, who have a shorter customer lifetime value and being, as being more set in their ways, both in terms of habit and product affinities. In arriving at this focal segment we have taken the following factors into consideration: According to the Eight Stages of Development, adolescents learn about and define who they are between the ages of approximately 12 and 19. If being athletic, or at least active, is not established as central to ones identity, the probability of prioritizing athletic activity later in life is likely diminished. If more children define themselves as being active during this influential period, the market for healthy, sustainable athletes will likely increase over time. From a commercial perspective, the potential lifetime value of an active teenager is likely to be higher than that of an average U.S. adult. Firstly the cost of acquiring an active youth is lower, as there are fewer barriers to exercise/activity as outlined above. Secondly, the number of years that teenagers have to be active is significantly greater as they not only start younger but may potentially live longer due to their adoption of healthy and active lifestyles. Teenagers generally have lower opportunity costs of activity and learning to exercise than adults. A combination of the greater amounts of leisure time available to them and their propensity to experiment with new things makes teenagers more likely to be comfortable learning about and engaging in activity. Teenagers also tend to have many opportunities to choose to engage in activities. These include physical education (PE) programs, sports teams, community teams, and informal pick-up games. Section 2 of this report presents key underlying influences and trends that currently inhibit and have the potential to further diminish activity levels among teenagers. Section 3 of this report then discusses the selection criteria that potential solutions must satisfy in order to most effectively address the problem of teen inactivity. Finally Section 4 lays out a potential solution aimed at leveraging key influences to encourage more active lifestyles among teenagers. Section 2: Factors underlying teenage inactivity Family influences In order to address the rising levels of inactivity among teenagers, it is necessary to first identify and understand the primary network of influencers that ultimately impact their decision making behavior and involvement in activities. Dual income single parent households Traditionally parents have been one of the strongest sources of influence over teenagers, and have played a crucial role in shaping their overall growth and development. However insights from interviews conducted with families in the Boston area suggest that shifts in the overall structure and composition of the average American family have decreased the amount of influence that parents exert over their children. In particular, the steady increase in the number of dual income earners1 and the rise in the number of single parent households highlight that parents today are facing increasing time constraints. A significant consequence of this phenomenon is that teenagers are increasingly subject to less direct parental oversight, as working parents often outsource the supervision of their children to external parties such as baby-sitters, nannies and daycare centers. While parents have a vested interest in encouraging their children to lead active lives in order to promote overall health and well-being, external parties are more likely to encourage teenagers to engage in sedentary, home-based activities that are easier to supervise. Examples of such activities include watching TV, surfing the internet or playing video games. Decline of parental role models Another implication of parental time constraints is that parents have less face-to-face time with their children and consequently fewer opportunities to educate them on the merits of leading an active lifestyle and adopting healthy eating habits. Given these time constraints parents themselves are also less likely to demonstrate the very behaviors that they aim to instill in their children. Thus, an absence of role models that are leading active lives in the household could further explain why teenagers are tending towards more sedentary lifestyles. Additionally, if parents spend less time prioritizing the on-going supervision and support of their childrens activity levels, teenagers may feel less motivated to participate in sports or other physical activities at school. For example our interviews with parents suggest that parental inability to attend games to cheer for their children or even provide the basic resources that support their childrens involvement in sports, such as providing rides to practice, may result in teenagers being less inclined or able to pursue active lifestyles. Evolution of family dining A further implication of parental time constraints is that working parents are increasingly relying on convenience and on-the-go food solutions for meal preparation. These habits can have a profound impact on the overall health and well-being of their children as evidenced by Child Development research which suggests there is a link between the number of years a working mother spends in the workforce and their childs BMI.v The increase in child obesity has attracted a great deal of media attention which has, in turn, resulted in a heightened sense of awareness of health wellness issues among parents. The observation that child obesity persists in the face of this awareness suggests that parents are precluded from developing solutions because they lack the necessary tools to motivate their children in the face of time constraints. This insight highlights an area of opportunity for Nike to provide tools to: Assist parents in incentivizing their children to lead more active lives; and Assist parents in motivating their children in a way that fits into their busy schedules. Crime parental attitudes An emphasis on helicopter parenting2, which has gained popularity in recent times, combined with the persistent coverage of criminal activity in the media has resulted in a heightened sense of paranoia around crime levels and neighborhood safety among parents. The implications of helicopter parenting are straightforward. As parents become more concerned about the overall safety of their neighborhoods they are more likely to only allow outside activity with adult supervision. However, due to their personal time constraints, they often encourage their children to stay indoors or commute to school by car, rather than engage in outdoor activities or walk, for example. In this case, parents appear to be prioritizing the short term benefits of child safety over the long term risks of obesity and other future health problems due to reduced activity levels Friend influences Increasing prominence of friends as influencers Siblings, particularly older ones, have traditionally been a powerful source of influence over teenagers. Younger siblings generally tend to emulate the behavior and habits of their older siblings, especially if there is a positive relationship between the two. However as the size of U.S. households continue to decline, the average teenager is growing up with fewer siblings to rely on and learn behaviors from. As a result of teenagers being exposed to fewer siblings and busier parents, peers and friend groups have gained more prominence in the influence and authority they have over teenagers lives. School influences In light of the factors discussed above, such as the limited amount of time parents spend with their children; external environments can serve as important influences on teenagers. Schools are not only a physical representation of where teenagers spend most of their time outside the home, but are also the arena within which their social networks converge. Teacher attitudes resource constraints Given that teenagers are highly exposed to their social networks at school, their fear of failing at physical activities can often overshadow their desire to try something new or different to shine in front of their peers causing them to shy away from any activity. For example, a school that has a reputation for being a leader in a certain sport, say basketball, may place significantly more emphasis on winning than inclusion. In such environments, children have less room to fail, that is to say, not to be good at basketball. Such overtly competitive situations can lead to divisions (ball players vs. non ball players) which amplify less skilled students feelings of inadequacy. Teachers serve as de facto parents in the school environment. Their attitudes towards general wellness and encouraging teenagers can be powerful drivers of childrens sustained engagement in activities. However, the continuous budgetary pressures schools face often result in understaffing, which causes teachers to stretch themselves very thinly across large student bodies. In these situations, teachers may not be able to provide the level of encouragement and personal attention necessary for children to enthusiastically engage in activities. If a child does not enjoy participating in an activity, the child is unlikely to engage in that activity again in the future. Tension between academics activity Teenagers are increasingly living in an achievement-oriented society, wherein the results of their efforts today can have a profound impact on their future options. In light of this, parents are getting their children involved in an array of extracurricular activities, such as debating clubs and honors classes, in order to increase their childrens chances of getting into good colleges. This additional competition on teenagers time often leads to reduced levels of activity. City influences Rural vs. urban settings The natural resources and climate of a region can impact activity levels depending on the type of sports they encourage. For example, hiking is an activity that requires minimal financial resources to participate and would likely encourage higher levels of activity. However, the relatively higher cost of participation in skiing may deter people from adopting the sport and therefore drive lower levels of activity. Media Technology influences Celebrity influence Proliferation of media distribution channels Celebrities and pop culture icons have become significant influencers of social behavior as children spend less time with their parents. The emergence of distribution channels such as Twitter has increased teenagers ability to gain direct access to celebrities. Given parents limited ability to monitor their childrens internet and mobile phone usage, teenagers are now accessing messages of varying quality. For example, children are no longer confined to watching PBS, which has focus on activity and wellness. They can now watch the latest craze on YouTube or access celebrity gossip on other outlets, which typically place a premium on glamorous lifestyles over healthy ones. Such messages can have a great degree of influence on children, who are particularly impressionable. Addictive characteristics of technology Perpetually connected to the internet and their mobile devices, teenagers today have become attuned to interacting with their environments using technology. Activity which requires them to disengage from electronic devices may be seen as dull and involve de-addiction from perceived high stimuli technology driven experiences. Physical vs. virtual interaction The advent of mobile phones and online social networks has reduced teenagers need to meet in person, as they can rely on the immediacy of virtual communication. The increased usage of these platforms has fundamentally changed the ways in which teenagers interact with one another by allowing them to remain socially engaged without needing to physically walk or bike over to see a friend.
Saturday, October 12, 2019
Mental Health Panopticon Essay -- prison systems
Prisons act as a total institution where inmates are put on a strict schedule and fall under one of the most gruesome forms of social control. Because of this, many inmates rebel resulting in prisons having to increase security and impose stricter punishments. As a result of this, less effort has been put into helping mentally ill inmates. The term panopticon, coined by Bentham illustrates the concept that the prison design would allow guards to see into cells but not allowing prisoners to see out. Thus, this would allow guards to have omniscient power over the inmates. Fortunately, this never worked as a prison, however prison has created a type of mental health panopticon. This allows for mentally ill parents to feel like they are always being observed; similarly to that of an experiment. Despite prisons best attempt to equally serve all inmates to the best of their ability, prioritizing security and punishment has lead to a mental health panopticon. As a result, prisons environm ents have exacerbated negative behaviours, created an inhumane environment for prisoners and lack the means to aid in mental health. First, the prison system exacerbates negative behaviour such as drug use, self-harming behaviour and suicidal thoughts and actions. One of the most significant ways that the prison community worsens drug use, self-harming behaviour and suicidal thought is providing minimal amount of harm reduction. Accordingly, Lines makes note that higher instance of HIV/HVD and other transmitted disease are a cause on mental health issues within prison, this harm reduction measures would improve the overall health of individuals in prison (Lines at Al. 2005). Thus, the prion systems all intersects: much like society, the happier the i... ...t work. Instilling fear into people works to conform behavior to a degree but it ultimately creates prisons with exacerbated negative behaviours inhume and unfit environments. Works Cited Brown, Michelle. (2012). Empathy and Punishment. Punishment & Society 14(4): 383-401. Lamb, H. Richard., Weinberger, Linda E., & Gross, Bruce H. (2004). Mentally ill persons in the criminal justice system: Some Perspectives. Psychiatric Quarterly 75(2): 107-126. Lines, Rick., Jurgens, Ralf., Betteridge, Glenn., & Stover, Heino. (2005). Taking action to reduce injecting drug-related harms in prisons: The evidence of effectiveness of Out of control [Television series episode]. (2010). In The fift estate. CBC. Retrieved from http://www.cbc.ca/fifth/episodes/2009-2010/out-of-control Sapers, H. (2008). A Preventable Death. Available at: http://www.oci-bec.gc.ca/rpt/index-eng.aspx
Friday, October 11, 2019
Development of the Cardiovascular System in Vertebrate Embryos
The cardiovascular system is the first organ system to become fully functional in the vertebrate embryo and its development occurs in a similar way in all vertebrates. It is derived from angioblastic tissue, which arises from mesenchyme, an aggregation of mesenchymal cells derived from the mesodermal tissue of embryos. The main processes involved in the development of the embryonic cardiovascular system are Vasculogenesis, Angiogenesis, Hematopoiesis, Erythropoiesis and Heart Formation. All processes occur under the influence of stimuli from genes and paracrine factors, oligosaccharides, multifunctional cytokines and enzymes.Vasculogenesis and AngiogenesisTwo distinctive mechanisms, vasculogenesis and angiogenesis implement the formation of the vascular network in the embryo. Embryonic vasculogenesis gives rise to the heart and the primordial vascular plexus within the embryo and its surrounding membranes as the yolk sac circulation. In mammals, it occurs in parallel to hematopoiesis , the formation of blood cells. Vasculogenesis refers to the in situ differentiation and growth of new blood vessels from mesenchymal cells known as angioblasts which aggregate to form isolated angiogenic cell clusters known as blood islands (angiocysts) within the extra-embryonic and intra-embryonic mesoderm. Small cavities appear within these blood islands by the confluence of intercellular clefts.The peripheral cells within these blood islands flatten to form endothelial cells, triggered by the binding of the Vascular Endothelial Growth Factor (VEGF) to the first of its two receptors, the VEGF-R2 (Flk1) protein, which is responsible for the differentiation of mesodermal cells into endothelial cells and the subsequent proliferation of the endothelial cells. The core cells give rise to blood cells (haematoblasts). The newly formed endothelial cells arrange themselves around the cavities in the blood islands, forming the primitive endothelium. Cellular vacuoles within the developing endothelial cells coalesce and fuse together without cytoplasmic mixing to forma the blood vessel lumen of the initial endothelial tube.Extracellular matrix deposition by fibroblasts promotes capillary-like tube formation under the influence of the binding of VEGF to its second receptor, VEGF-R1 (Flt1). This is followed by the interaction of the endothelial blood vessel with the supporting mesodermal cells. The Angiopoietin-1 growth factor binds to the Tie2 receptor tyrosine kinase on the cell membrane of the endothelial cells, allowing the blood vessel to recruit the peri-endothelial cells that will surround it as pericytes and the smooth muscle tissue of the blood vessel, thus maintaining the stability of the blood vessels.The growth and multiplication of this primordial vascular plexus occurs through the process of angiogenesis in which new blood vessels arise from pre-existing vascularity. This process requires the combination of two signals, Angiopoietin 2 and VEGF, in order t o promote the loosening of the support cells and the ability of newly exposed endothelial cells to multiply by budding and sprouting into new vessels. Replacement of Ang1 by Ang2 on the Tie2 receptor tyrosine kinase destabilizes the vessel integrity thus facilitating vessel sprouting in response to the VEGF signal. The new endothelial tubule then interacts with the surrounding mesenchymal cells in part as a response to Ang1 which acts on the endothelial cell Tie2 in order to trigger the association of the new tubule with the periendothelial cells.Hematopoiesis and ErythropoiesisBlood develops from endothelial cells (haematoblasts) by a process known as hematopoiesis initially in various parts of the embryonic primitive mesenchyme (yolk sac and allantois), and then in the liver and later on in the spleen, bone marrow and lymph nodes. In embryonic development it is known as primitive hematopoiesis. All blood cells develop from pluripotential stem cells committed to three, two or one h emopoietic differentiation pathways but morphologically undistinguishable. These pluripotent stem cells divide infrequently to generate either more pluripotent stem cells (self-renewal) or committed progenitor cells (colony-ââ¬âforming cells, CFCs) which are irreversibly determined to produce only one or a few types of blood cells.These colony-forming cells are known as Lymphocyte Forming Colony (LCFC), Megakaryocyte Forming Colony (MCFC), Erythrocyte Forming Colony (ECFC) and Monocyte Granulocyte Forming Colony (MGFC). The progenitor cells are stimulated to proliferate by specific growth factors (colony-stimulating factors, CSFs) but progressively lose their capacity for division and develop into terminally differentiated blood cells which usually live for only a few days or weeks. Erythrocytes (red blood cells) develop by the process of erythropoiesis. In embryos, erythrocytes are nucleated and express embryonic globin chains.Heart FormationIn vertebrate embryos the heart tube , the earliest formed heart structure, arises in the heart field, an embryonic clustering of cells which arises soon after gastrulation. These early stages of development are almost identical among all vertebrates unlike the subsequent septation of the chambers and of the outflow tract which varies between species.The heart field is that region of the precardiac mesoderm that contains the cardiac progenitor cells (endocardial and myocardial precursor cells) and is competent in responding to inductive signals.Precardiac cells from the epiblast lateral to the primitive streak invaginate through the streak and migrate cranio-laterally to form part of the lateral plate. This pattern is maintained in the eventual anteroposterior placement of structures in the heart, with the most cranial cells contributing to the bulbus cordis at the extreme anterior end of the heart and the most caudal cells contributing to the sinoatrial region and the extreme posterior end.As mentioned above, the cell progeny of this region contributes to all layers of the heart tube (myocardium, endocardium and parietal pericardium), as well as to the endothelial cells in the vicinity of the heart. In the lateral plate the cells maintain their anteroposterior position.The lateral plate splits to form two epithelial layers, the somatic mesoderm (which also includes migratory precursors for limb musculature) and the splachnic mesoderm which remains an epithelial sheet and includes the cardiac precursors.The embryo then folds ventrally carrying the splachnic mesoderm with it and bringing it ventral to the foregut which is generated as the lateral folds meet in the ventral midline. The precursors of the endocardium are included in the splachnic mesoderm and begin to form clusters on the foregut side of the epithelial sheet.The heart fields fuse at the midline to form a primary heart tube, the process beginning cranially and proceeding caudally. This tubular heart consists of an outer myocardial man tle and an endocardial inner lining. Between these two concentric epithelial layers an acellular matrix, the cardiac jelly, is found. As the ventricular region of the heart begins to bend to the right (ââ¬Å"cardiac loopingâ⬠), the cardiac jelly disappears from the future major chambers of the heart (atria and ventricles) and begins to accumulate in the junction between the atria and ventricles (atrioventricular junction, AVJ) and in the developing outflow tract (OFT).This results in the formation of the endocardial cushion tissues in the AVJ which later contribute to the formation of AV (atrioventricular) septal structures and valves, septation of the OFT and formation of the semilunar valves of the aorta and pulmonary artery.The vertebrate heart tube is aligned along the antero-posterior axis. Arterial flow is directed from the ventricle at the anterior end of the heart, through the ventral aortic vessel and branchial arches and subsequently travels posteriorly to the dorsal vessel. Blood flow returns to the heart through the venous system to the atrium lying at the posterior end of the heart chamber.Formation of the Mammalian Embryonic Cardiovascular System1) à Formation of the primitive cardiovascular systema) à Extra-embryonic blood vesselsThe wall of the yolk sac mesenchyme proliferates and forms isolated cell clusters known as blood islands. Peripheral cells within these islands flatten and differentiate into endothelial cells in order to form endothelial tubes. Centrally- located cells develop into primitive blood cells (hematoblasts). Endothelial tubes approach and fuse with each other forming a primitive vascular network. This primitive endothelial network appears in the chorionic membrane and body stalk and connects to the vitelline circulation.b) à Intra-embryonic blood vesselsThe endothelial tube network appears in the intraembryonic mesenchyme toà form an intraembryonic endothelialà tube network. The intraembryonic and extraà e mbryonic tube networks connect to each other forming a diffuse endothelial à tube network which either fuses or disappears to form a primitive cardiovascularà system.2) Development of the HeartThe primitive cardiovascular system consists of the primary heart tube, formed from the fusion of the two bilateral heart fields of the precardiac mesoderm. The primary heart tube gives rise to the endocardium. Blood flows through this primitive heart tube in a cranial position. The mesenchyme surrounding the tube condenses to form the myoepicardial mantle (the future myocardium). Gelatinous connective tissue, the cardiac jelly, separates the myoepicardial mantle from the endothelial heart tube (the future endocardium).A series of constrictions (sulci) divides the heart into sections: the sinus venosus, in which the common cardinal veins, the umbilical veins and the vitelline veins drain; the primitive common atrium; the primitive common ventricle; and the bulbus cordis through which blood flows to the paired dorsal aortae. The paired dorsal aortae arise when the branchial or pharyngeal arches are penetrated by six pairs of arteries called aortic arches. These arteries arise from the aortic sac and terminate in a dorsal aorta. Initially, the paired dorsal aortae run along the whole length of the embryo but soon fuse to form a single dorsal aorta just caudal to the branchial or pharyngeal arches.The arterial and venous ends of the heart tube are fixed by the branchial or pharyngeal arches and the septum transversum, respectively. At this stage the heart is beating and the contractions are of myocardial origin and likened to peristalsis.The primitive atrium loops up behind and above the primitive ventricle and behind and to the left of the bulbus cordis forming the bulboventricular loop.. This looping process brings the primitive areas of the heart into the proper spatial relationship for the further development of the heart.Embryonic venous circulation consists of thr ee pairs of veins: the vitelline veins which drain blood from the yolk sac, the umbilical veins which bring oxygenated blood from the chorion (early placenta), and the common cardinal veins which return blood to the heart from the body of the embryo. Arterial circulation consists of three paired arteries: the intersegmental arteries, which form 30-35 branches of the dorsal aortae and carry blood to the embryo, the vitelline arteries which pass to the yolk sac and later to the primitive gut, and the umbilical arteries which carry oxygen-depleted blood to the placenta.3)à à à à à Formation of the Heart ChambersAs mentioned above, during cardiac looping the cardiac jelly disappears fromthe future major chambers of the heart and begins to accumulate in theà à à atrioventricular junction (AVJ) and developing outflow tract (OFT). This results in the formation of the endocardial cushion tissues in the dorsal and ventral walls of the AVJ. These cushions are invaded by mese nchymal cells, approach each other and fuse, dividing the atrioventricular canal into the right and left atrioventricular canals.The primitive atrium is divided into right and left atria by the formation, modification and fusion of the septum primum and the septum secundum. The septum primum grows towards the fusing endocardial cushions from the roof of the primitive atrium creating a curtainlike septum, the foramen primum between the free edge of the septum and the endocardial cushions.This foramen becomes progressively smaller and eventually disappears when the septum primum fuses with the fused endocardial cushions (atrioventricular septum). The septum secundum grows from the ventrocranial wall of the atrium to gradually overlap the foramen secundum in the septum primum, forming an incomplete separation between the atria in the form of an oval opening, the foramen ovale.The sinus venosus initially opens into the center of the dorsal wall of the primitive atrium and its left and r ight horns are of about the same size. The right horn progressively begins to enlarge in respect to the left horn until it receives all the blood from the head and neck via the superior vena cava and the placenta and caudal regions of the body via the inferior vena cava. The left horn forms the coronary sinus.The wall of the left atrium is formed by the incorporation of the primitive pulmonary vein which develops as an outgrowth of the dorsal atrial wall. As the atrium expands, the primitive pulmonary vein and its branches are gradually incorporated into the wall of the left atrium forming four pulmonary veins with separate openings.The division of the primitive ventricle into the right and left ventricles is initially indicated by a muscular ridge with a concave free edge in the middle of the ventricular floor near its apex. Initially, most of its increase in height results from the dilation of the ventricles on its each side. Later, however there is active proliferation of myoblas ts, forming the thick muscular part of the interventricular septum.At the beginning a crescentic interventricular foramen exists between the free edge of the interventricular septum and the fused endocardial cushions allowing communication between the right and left ventricles. This foramen closes as the result of the fusion of tissue from three sources: 1) the right bulbar ridge, 2) the left bulbar ridge and 3) the endocardial ridges. The membranous part of the interventricular spetum is derived from tissue extension from the right side of the endocardial cushions. It merges with the aorticopulmonary septum and the thick muscular part of the interventricular septum. When the interventricular foramen closes, the pulmonary trunk is in communication with the right ventricle and the aorta communicates with the left ventricle.Active proliferation of mesenchymal cells in the walls of the bulbus cordis gives rise to the formation of the bulbar ridges. Similar ridges form in the truncus ar teriosus and are continuous with the bulbar ridges. Both the bulbar and the truncal ridges have a spiral orientation and result in the formation of a spiral aorticopulmonary septum when the bulbar and truncal ridges fuse. This septum divides the bulbus cordis and the truncus arteriosus into the aorta and pulmonary trunk.Due to the spiral orientation of the aorticopulmonary septum, the pulmonary trunk twists around the aorta. The bulbus cordis is incorporated into the walls of the ventricles. In the left ventricle it forms the walls of the aortic vestibule just inferior to the aortic valve. In the right ventricle it forms the infundibulum or conus arteriosus.Ventricular trabeculation begins in the apical region of the ventricles soon afterà cardiac looping. The trabeculation serves primarily as a way of increasing theà oxygenation of the myocardium in the absence ofà a coronary circulation. Theà compactation of the trabeculae adds to the proportion and thickness of theà co mpact myocardium.
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