what is HDTV essays

what is HDTV essays What is HDTV? HDTV, the first completely new TV standard since the introduction of the medium in the 40's, allows a picture with much finer visual detail and better color than the NTSC standards used with today's analog TV sets. Pictures can have 3 to 5 times the sharpness of today's broadcasts and no noise or snow. A good analogy is that you can see picture improvement like CD's improved over vinyl records! And speaking of sound, HDTV broadcasts also include CD quality surround sound based on the Dolby Digital (AC3) standard. HDTV sets use a wide screen more like those in movie theaters (16:9 width to height ratio compared to 4:3 today). These new sets may also be compatible with PC's so you may look forward to combination TV/PC applications. Should you put off buying a TV now and wait for the first HDTV sets to hit the market? Good question! We believe the set you buy today will serve you well for many years and that the HDTV experience will take a long time to develop in terms of affordability and programming choices. Aside from our ardent desire to sell TV's this year we think there are a number of facts which support this position: The FCC has mandated that standard TV signals continue to be broadcast through the year 2006 to insure a smooth transition to HDTV. This deadline may be moved back if consumers and/or the Congress protest having to throw away or upgrade their existing sets but it will certainly not be moved forward. The set you buy today will have signals to show for at least nine years! Manufacturer's plan to introduce add-on boxes to allow conventional TV sets to receive and show digital broadcasts. Of course you won't see broadcasts in a wide screen format and you may not see all of the resolution that MAY be broadcast, but you will be able to watch your set beyond 2006 and you can add the converter box at any time before that. Broadcasters outside of the top 30 markets are not mandated to begin ANY di ...

LIVE CELL IMAGING OF BACTERIAL PATHOGENS BREACHING THE BARRIER OF Dissertation

LIVE CELL IMAGING OF BACTERIAL PATHOGENS BREACHING THE BARRIER OF POLARIZED EPITHELIAL CELLS - Dissertation Example 2.3 Staining with anti-cortactin and phalloidin 15 2.4 Staining with anti-ZO-1 and HOECHST 16 2.5 Extracting GFP and YFP plasmids from C.jejuni for transformations 16 2.6 Transformation of Cj 11168 wt with GFP and YFP plasmids 17 2.7 Scanning Electron Microscopy 18 2.7.1 Specimen preparation for SEM (cultured monolayers) 18 3.0 Results 19 3.1 Laser Scanning Confocal Microscopy 19 Staining with anti-ZO-1 and HOESCHT 23 Figure 11 (A-D) HOESCHT stains blue to visualise the nuclei and ZO-1 stains green to visualize the tight junctions 23 3.2 Scanning Electron Microscopy 24 3.3 Campylobacter jejuni invasion induces cytoskeletal rearrangement 28 3.4 Campylobacter jejuni invasion causes membrane ruffling 28 3.5 Analysis of wild type and DHtrA mutant C. jejuni by electron microscopy 29 3.2 Campylobacter jejuni invasion is time dependent 29 3.3 Campylobacter jejuni invasion induces cytoskeletal rearrangement 29 3.4 Campylobacter jejuni invasion causes membrane ruffling 30 3.5 Analysis of wild type and DHtrA mutant C. jejuni by electron microscopy 30 3.6 Transformation of Cj 11168 wt with GFP and YFP plasmids 30 4.0 Discussion 31 5.0 Conclusion 34 6.0 References 35 Abstract Campylobacter jejuni is a well known pathogenic bacteria commonly transmitted through contaminated food (Oyarzabal, et al., 2012). Its presence in the human intestinal gut causes disease and is one of the leading causes of gastroenteritis in human beings. By crossing the polarized epithelial barrier in the gut, it leads to increased damage to intestinal tissue although the exact mechanism by which it accomplishes this is not yet defined (Boehm, 2011). As such, the research aimed to determine this through a series of infection studies. Results of the manner in which C. jejuni breeches the barrier of polarized epithelial cells was captured through the use of high resolution field emission scanning electron microscopy (FESEM) and confocal microscopy, and the results through various strains of the pathogenic bacteria evaluated. The results of the experiments carried out in this study indicated that invasion of an epithelial cell by C. jejuni causes membrane ruffling and cytoskeletal rear rangement. It also shows that invasion by C. jejuni is time dependent and the number of pathogenic bacteria increases with time. It also shows that C. jejuni strains can also undergo transformation with the GFP and YFP in order to ensure genetic diversity and replication. 1.0 Introduction The human gastrointestinal tract has a mucosal cell layer that forms a strong barrier which protects the body from invasion by pathogenic microbes commonly residing in the intestinal lumen (Boehm et al., 2012). This class of bacteria, commonly referred to as enteric pathogenic bacteria, include Salmonella, Shigella, Heliobacter, and Campylobacter among others possess specific properties that enable them to

Critical Marketing Essay Example | Topics and Well Written Essays - 1750 words

Critical Marketing - Essay Example An examination of this and other contemporary marketing practices reveals emergent issues that deserve closer inspection in the area of marketing as a discipline. A number of these have already attracted academic investigation but the most important include the advent of the so-called relationship marketing and the increasing focus on ethics and social responsibility. There is, hence, an additional paradigm shift, which is best examined through the critical marketing perspective. Traditional Marketing The traditional marketing mix is composed of the so-called 4Ps, which was introduced by McCarthy back in the 1960s. This doctrine explains how marketing strategies, plans and approaches are designed according to four marketing elements: product, price, place (distribution channel); and, promotion (marketing communication). According to Barker and Angelopulo (2005), the fundamental task of marketing is to combine these four elements into a marketing program so that efficiency in dealing with customers is achieved. (p139) For several decades, this traditional marketing mix, dominated marketing practices because it is aligned with the core marketing principle of consumer-centrism. By 1990s, however, new marketing paradigms began to surface. The usefulness of the 4Ps became suspect as new variables emerge, calling for new marketing models. Day and Montgomery (1999) explained that â€Å"with growing reservation about the validity or the usefulness of the Four Ps concept and its lack of recognition of marketing as an innovating and adaptive force, the Four Ps now are regarded as merely handy framework.† (p3) The development stemmed from the schools and lines of thoughts that were brought about by new practices such as relationship marketing, quality management, market orientation, supply and value chain management, resource management, and networks. (Vargo and Lusch 2004, p1) Specific examples that demonstrate the changing face of marketing today is how digital t echnology revolutionizes the way people behave, interact with each other and their environment and consume products. Social networking websites are cases in point. They best represent the emergence of the so-called digital community through the Internet, which serve as some form of online version of society wherein people live their digital lifestyles: wherein they talk with each other, forge relationships, buy their needs, look for guides and directions, and so forth. These websites introduced new marketing channels. In consideration of the previously cited factors, Vargo and Lusch were able to posit how contemporary marketing has become fragmented. What happened was that the traditional conception of marketing has to be set aside in order to accommodate the requirements and challenges such as those posed by the addition of services and other intangible variables in the marketing practice as the marketplace included ideas and cultural artifacts as products. This is in addition to t he diversity in the roles of several actors and stakeholders in the development process such as institutions, ideologies, and the empowerment consumers. The dynamics of these new changes and how they call for new marketing models are best explained by a critical analysis of marketing. Critical Marketing According to French et al. (2010), critical marketing or the critical analysis

Self-introduction Personal Statement Example | Topics and Well Written Essays - 500 words

Self-introduction - Personal Statement Example Although I spent much more time than other people in studying, I could not achieve high scores. Fortunately two years ago I chose to continue my education in the U.S., and it was here where my ideas and thoughts about studying changed significantly. First, I realized that as a teenager, studying at school could not be taken for granted. There are many overage students who go back to school after they have already been working in society. Many reasons can be attributed to this phenomenon, but I would say that for most it would be due to financial problems in the family. The fact that some of these people sacrificed their careers in order to receive more education shows how important it is for teenagers to be studying at school. Hence, I must cherish my time studying because I dont want to have to go back and redo it later on. Second, in comparing teaching methods between my home country and the U.S., I would say that here the college professors explored my interest in learning more and made learning fun. Now, although I feel like I have achieved success in college, I believe I must keep stepping forward in my specific field because I understand that knowledge is the most precious property in my life. In view of values, knowledge creates wealth. Therefore, I must prepare well for my future now so that I can reap the benefits once I have finished my education and look to enter the workforce. In the era of the knowledge economy, it is becoming increasingly hard for people to progress without having knowledge. It must be said that no knowledge is worthless because you never know when it will become useful later on. Under the ethos, values, and rights in the United States, I believe that I am more adept to study here instead of my home country. This is because the United States provides many opportunities to students to pursue and fulfill their dreams, something which cannot be applied to every student in my home country. Therefore, I set my

The Secrets of the Lusitania :: essays research papers

The American owner of the ill-fated Lusitania is planning to explore and hopefully salvage the liner, sunk off the south-west coast of Ireland on May 7, 1915, killing 1,198 people. "The Lusitania is probably the most important shipwreck that hasn't been investigated in any detail so far," says Gregg Bemis. And although there are striking similarities between the Lusitania and the Titanic, recently the subject of a major movie, Bemis believes that the Lusitania is "a much more interesting and historical story - and you don't have to make up any phoney romance the way they did with the Titanic." It is a story which involves US President Woodrow Wilson, Winston Churchill and the still unanswered question of what the liner was carrying on board. The Lusitania, pride of the Cunard line, was sailing from New York for the port of Liverpool when a single torpedo from a German U-boat crashed into her hull between the third and fourth funnels. The ship sank in just under 20 minutes. Of those killed, 128 were American citizens, and the incident influenced the eventual US decision to enter the war two years later. It also provoked curiosity and mystery that naval historians have argued over ever since. Was the Lusitania, as the Germans claimed persistently, heavily loaded with Liliya Goldenberg 2 weapons of war? If she was, who tipped Germany off? In addition, did she carry priceless works of art in watertight containers, and what of the six million dollars in gold bullion rumored to have been taken aboard but which was not on the manifest? Following the discharge of the fatal torpedo, there was a second blast deep inside the ship a few minutes later - could this have been a secret cargo of explosives? What is certain is that since the fatal day of May 7, 1915, the wreck of the Lusitania has lain untouched 100 meters deep off the Old Head of Kinsale, a prominent peninsula on Ireland's southern coast. Gregg Bemis is in no doubt that she was carrying weaponry. "She went down in 18 minutes," he says. "That would have been impossible with one torpedo for a ship that size. There were high explosives on board, all right." Bemis also points out that one of those who perished was Sir Hugh Lane, Irish art collector and head of London's National Gallery. He was believed to have had a stack of paintings by Rubens, Titian and Monet on board in watertight

Personal Identity †Philosophy Essay

It is easy to see oneself as the same person we were ten, twenty, or fifty years ago. We can define identity through our physical presence, life experiences, memories, and mental awareness of self. One can testify our persistence as a person through our existence as a person. But what makes us the same person? In this paper, I will argue for the â€Å"simple† view of the persistence of identity – that it is impossible to determine what single thing that makes us the same person over time. I will support my claim with the refutation of the main complex view claims of the body, brain and psychological continuity criterion. Entrenched in the â€Å"simple† view is the idea that personal identity, and the persistence of personal identity, cannot be measured through philosophical discourse or scientific investigation. There are a number of opposing arguments, known as complex theories of personal identity. In each of these arguments, the central claim is that either the body, the brain, or the psychological continuity of an individual determines how they persist as the same person (Garrett, 1998, p 52). To call them complex is a misnomer – for each is far too narrow to properly define and explain personal identity. Complex argument 1– Psychological continuity John Locke defines a person as a ‘thinking, intelligent being, that has reason and reflection and can consider itself as itself, the same thinking thing, in different times and places’ (Locke, 1689, p 1-6). This statement suggests that, in order to persist as the same person, we must have a mental consciousness which persists through time. We can say that a person is psychologically continuous if they have a mental state that is descendent from their previous mental states. For example, this theory states that a five-year-old will be the same person when they are a 25-year-old, because their mental state in later years is descendent from their earlier years. Counter argument By its very nature, the idea of psychological continuity is flawed. It is not uncommon for an individual’s mental state to be changed so drastically that they could not truly be considered the same person. Several examples have been made by Waller: sufferers of cognitive impairments such as dementia, people who have gone through stressful or traumatic situations, and war eterans that are affected by post-traumatic stress disorder (Waller, 2011, p 198-210). In any of these cases, it would be difficult to argue that the individual has a continuous mental state – more accurate would be to describe them as a â€Å"snap† or â€Å"break† that, effectively, creates a new person. The only conclusion is that these individuals do not persist, as their psychological states become radically different from their previous psychological states. Complex argument 2 – Persistence of the body Another expression of the complex view is the body criterion. Put simply, a person is said to persist if they exist in the same physical body over time. In this case, the previously mentioned dementia or PTSD sufferers would be considered the same people, as their physical body has continued. The theory suggests a â€Å"brute physical relation† between body and identity (Korfmacher, 2006). Without regard for mental state, an individual is considered to have a persistent personal identity as long as their body survives. Counter argument This theory lends itself easily to thought experiments, and they quickly expose some problems. If individual A receives an organ donation from individual B, can it be said that individual A has taken some of B’s identity? Surely not. It would be absurd to suggest that having the kidney or liver of another person would affect one’s persistence as an individual. Similarly, if individual C had their body cloned, it would not make their clone the same person. There is much more to personal identity than can be defined by something so comparatively insignificant as the physical body. Complex argument 3 – Persistence of the brain The brain is the functional centre of the human body; the place where memories are stored, feelings are felt, and environmental signals are processed. It is unsurprising, therefore, that the brain is so often considered to be the â€Å"home† of personal identity. This theory is a staple of many science fiction texts – as a convention, the cognizant â€Å"brain in a jar† or brain transplant recipient is fairly common. Proponents of this â€Å"we are our brains† theory claim that, so long as the brain persists, so does the person. Counter argument This theory seems to refer to consciousness rather than the physicality of the brain, so it is important to make a clarification between the two. Julian Baggini suggests that we should view the relationship between consciousness and identity similarly to the relationship between a musical score and the paper it is written on (Baggini, 2005, pp. 112-114). In other words, the brain is simply a storage space for our memories, thoughts, and self-awareness. Should it not, therefore, be so that an individual could simply persist as a brain in a jar, provided they could be sustained in that state? If the entirety of personal identity is stored in the brain, there must be no need for the rest of the body beyond keeping the brain alive. Such a theory could not possibly be true – life experiences and interactions with the world are such an intrinsic part of identity that we could not persist without them. The theory that consciousness plays a significant role in the persistence of personal identity is appealing, but it can not be said that the brain alone could sustain consciousness. Conclusion  To call the simple view of the persistence of personal identity â€Å"simple† is almost deceptive; deep consideration on the subject quickly turns towards the complex. It is easy to grasp at the categories of body, brain, and mental state, but it would be wrong to say that the persistence of any of those equates to the persistence of an individual. Personal identity is something so much harder to define, and it is harder still to find definitive measures of its continuation. Personal identity is evasive, and fleeting; it is intangible, ever-changing. Its persistence is so much more than can be determined.

Essay on Management, Growing Leaders Study Case - 1030 Words

Running Head: Growing Leaders Growing Leaders P. Robbins and Coulter Golden Gate University 1. What do you think about Buckley’s statement that leaders and managers differ? Do you agree? Why or why not? I agree fully agree with Buckley’s Statement. He stated that a leader is the inspiration behind the scenes. The leader needs to show proper ethics and work attitude for the employees to follow. When a leader is not fulfilling his or her role and only commanding instructions, it†¦show more content†¦One of the greatest advices Buckley says, is the a leader should not be promoted too soon, a leader needs to stay in his position for some time and get use the achievements and the problems he will be facing. If a leader does not face any problems while in his position, he has not been in his position for a good amount of time. 3. Take each of the six leadership attributes that the company feels is important. Explain what you think each one involves. Then discuss how those attributes might be developed and measure. Energize and inspire others-I believe this attribute involves motivating employees to do their best. When you have a leader or manager that shows love for his work, he or she carries this on to others. From personal experience, I have had managers who hated their job and this made me not want to be at work; everything was negative. I now have a manager who loves what she does and truly loves helping people and her positive energy and passion most definitely rubs off on me! Demonstrate ethics-Ethics is what keeps the company organized and running the way it does. There are many ethics in a business; how to dress, how to act, what time to arrive at work, what to do in certain situations, and so on. When employees see upper management demonstrate right from wrong, it gives them a showing of what they are expected to do and not do, at work. 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