Film paper Movie Review Example | Topics and Well Written Essays - 1500 words

Film paper - Movie Review Example The modern audience might be amused of how Godard suddenly breaks the 4th wall this way. They can perceive the breaking as a form of interpersonal connection, a way to get into the mind of the audience to make them think about filmmaking too, not just the film. A 1959 audience might be a bit shocked, as if their spectatorship has been violated. They might also seem confused of what Michel means. The influence of the technique up to now may not have the same power as before because it might seem too contrived, depending on how it is executed. Or it might just seem like an overused technique for some of the modern audience who have seen it many times. Done before or within the context of avant garde films, breaking the 4th wall can attain the impact of changing how people see the film and the social context of the film. It can highlight the insight that film is about making impressions and images, a contrived way of affecting the audience through the right placing and combination of fi lm elements. 2. One of the scenes that features several jump cuts is the transition between the long bedroom scene between Patrician and Michel and their kiss. Before the jump cut, Patricia starts a game where she will stop staring at Michel once he stops staring at her. After he does his usual rubbing of his lips mannerism, Patricia is in shallow focus and she rolls the poster to look at Michel through its hole. The poster serves as a double frame. She looks into him and the camera zooms, as if she is going deeper into his personality, trying to figure out why she is attracted to him. Michel keeps on staring at her, in this case, he also stares at the audience, and the shot zooms to a close up, making his necklace and cigarette appear closer and closer. The impact is that the audience sees only the physical and the material of his identity. He hides himself inside his carefree attitude to life. After that is the jump cut which is disorienting. All of a sudden,

To what extent selection methods are acceptable by organisations Essay

To what extent selection methods are acceptable by organisations - Essay Example Various factors, both internal and external, contribute to the process of recruitment which includes recruitment policy, costs, growth and expansion of the organization along with supply and demand of specific skills in the market, political and legal considerations, etc. (Gupta, 2007). According to Edenborough (2007) ‘selection can be defined as the combination of processes that lead to the choice of one or more candidates over others for one or more jobs or roles’. However it is to mention that selection of the employees starts where recruitment ends. Selection is the process of discovering the qualifications and characteristics of the job applicant in order to establish their likely suitability of job position which requires a methodical approach so as to find the best person for the job (Haryani, 2008). There are various methods of selection to complete the recruitment process to get the best human resources that can carry out the work with elan. However it is necess ary to understand that various other factors like employee union, political and legal pressure, etc. impede the selection process making it difficult for the companies to complete the process, therefore it is necessary to select a suitable methodical approach of selection for the completion of recruitment process. ... ection process of recruitment 3) To analyze the extent of use of psychometric tools, social process and other internal and external sources by studying the selection process in one of the employee recruitment agency. 4) To analyze, the extent to which selection methods could be adapted by an organization. Review of Literature Recruitment is typically regarded as the poor relation of selection while selection has caught the attention of organizational psychologists keen to improve the reliability and validity of selection methods (Marchington and Wilkinson, 2005). Selection methods ensure that investments made in job design, advertising, career fairs and other recruitment activities bear fruit in the form of qualified, skilled and well motivated new employees who will be able and willing to contribute to the objectives of the organization (Nankervis, Compton and Morrissey, 2009). Selection techniques cannot overcome failures in recruitment but makes them evident (Marchington and Wilki nson, 2005). Williams (2005) mentions various factors which need to be considered while choosing selection methods. Selection criteria for the post to be filled, acceptability and appropriateness of methods, abilities of staff involved in the selection process, ease of administration, time factors, accuracy and cost are some of the factors that should be considered and worked upon while deciding the selection method. Most common recruitment methods used by employers include closed searches i.e. employment from internal sources, word of mouth, associations with schools, colleges and universities; recruitment agencies and responsive methods i.e. speculative applications, open searches, local newspaper advertisements, adverts in specialist press, national newspaper, website, radio and

The Life Of Warren Buffett History Essay

The Life Of Warren Buffett History Essay INTRODUCTION Warren Edward Buffett (born August 30, 1930) is a U.S. investor, and philanthropist. He is one of the most eminent investors in chronicle, the basic shareholder and chief executive officer of Berkshire Hathaway and in 2008 was ordered by Forbes as the 2nd most robust person in the world on an approximated net worth of around $62 billion. Buffett is often called the Oracle of Omaha or the Sage of Omaha and is noted for his adhesiveness to the value investing philosophy and for his own frugalness in spite of his huge riches. Buffett is also a famed altruist, having engaged to impart 85 percentage of his fate to the Gates cornerstone. He as well assists as a appendage of the board of trustees at Grinnell College. In 1999, Buffett personified described as the greatest money manager of the twentieth century in a surveil by the Carson Group, leading Peter Lynch and John Templeton. In 2007, he was enrolled amongst Times 100 virtually influencial people on the Earth. BUFFETTS HISTORY Warren Buffett was born in Omaha, Nebraska. His father name is Howard Buffett and having 2 siblings. He worked at his grandpas grocery store. In 1943, Buffett registered his 1st income tax return, deducing his pedal and watch as an exercise disbursement for $35 for his employment as paper deliveryman. Later on his father was elected to United States Congress, Buffett was schooled at Woodrow Wilson High School , Washington. In 1945, in his fledgeling year of high school, Buffett and a acquaintance expended $25 to buy a secondhand pinball game machine, which they placed in a barber workshop. Within weeks, they possessed 3 game machines in different emplacements. Buffett first entered at The Wharton School, University of Pennsylvania, (1947-49) where he united the Alpha Sigma Phi brotherhood. His father and uncles were Alpha Sigma Phi brothers from the chapter in Nebraska. In 1951, he changed to the University of Nebraska where he underwent a B.S. in Economics. Buffett then enrolled at Columbia Business School subsequently memorising that Benjamin Graham, (the generator of The Intelligent Investor), and David Dodd, 2 long-familiar financial analyst*, tutored there. In 1951, he then underwent a M.S. in Economics from Columbia University. In Buffetts personal articulates: Im 15 percent Fisher and 85 percent Benjamin Graham. The primary theme of investing is to consider stocks as business, utilise the markets variations to your welfare, and look for a safety margin. That is what Benjamin Graham educated us. A century from today theyll even be the fundaments of investing. BENJAMIN GRAHAM BUFFETTS MENTOR During the period of 1920s, Ben Graham had become renowned. He looked for for stocks that comprised so low-priced they were almost entirely pregnant of risk, at a time when the rest of the world was approaching the investment field as a tremendous game of roulette. The Northern Pipe Line, an oil transportation company carried off by the Rockefellers was among his best known calls. The value investors tried to convince management to trade the portfolio, but they denied because Graham accomplished that the company had bond holdings worth $95 per share which was traded at $65 per share. Shortly thereafter, he engaged a adoptive warfare and procured a spot on the Board of Directors (BOD). The company gave a dividend in the amount of $70 per share and sold-out its bonds. At the age of 40, Security Analysis, among the greatest works ever composed on the stock market was pubished by Ben Graham. At that time, it was dangerous; endowing in equities had become a prank (The Dow Jones had struck from 381.17 to 41.22 over the course of three to four short years following the crash of 1929). It was about this time that Graham arrived up with the rule of intrinsic business value a touchstone of a businesss genuine worth that was wholly and entirely independent of the stock price. Utilising intrinsic value, investors could be in the position to determine what a company was worth and could be capable to take investment decisions consequently. His succeeding book, The Intelligent Investor, which Warren observes as the greatest book on investing ever written, enclosed the world to Mr. Market the best investment doctrine of analogy in history. Through his simple yet profound investment principles, Ben Graham turned an idyllic anatomy to the 21 year old, Warren Bu ffett. CAREER CHRONICLE From 1951-54, Buffett was hired at Buffett-Falk Co., Omaha as an Investiture Salesman. From 1954-1956, he was hired at Graham-Newman Corp., New York as a financial analyst. From 1956-1969, he worked with Buffett Partnership, Ltd., Omaha as a superior general Partner and from 1970 onwards till Present at Berkshire Hathaway Inc, Omaha as its Chairman, Chief Executive Officer. In 1951, Buffett Warren observed his mentor was the Chairman of a small, nameless insurance company named GEICO insurance. Taking a power train to Washington. on a Saturday, he tapped on the door of GEICOs central office until a janitor permitted him in. At that place, he encountered Lorimer Davidson, Geicos Vice President, and the both talked about the insurance business concern for hours. Davidson would eventually become Buffetts womb-to-tomb friend and an everlasting charm and later on recollect that he discovered Buffett to be a Prodigious man after only fifteen minutes. Buffett calibrated from Columbia and desired to work at Wall Street, however both, his father and Ben Graham pressed him not to. He volunteered to work out for Graham free of charge, but Graham declined. Buffett turned back to Omaha and worked as a stockbroker while acquiring a Dale Carnegie public speaking course. Utilising what he acquired, he sensed surefooted adequate to teach an Investment Principles Rules night class at the University of Nebraska. The moderate age of his pupils was more than twice his personal. During this time he purchased a Sinclair Texaco gas station too as a side investment. Nevertheless, this didnt boot out to be an eminent business jeopardize. In 1952, Buffett wedded Susan Thompson and the following year they gave birth their 1st baby, Susan Alice Buffett. In 1954, Buffett received a job at Benjamin Grahams partnership, which he always dreamed. His initiating remuneration was $12,000 a year (more or less $97,000 conformed to 2008 dollars). There he worked intimately with Walter Schloss. Graham was a bully man to work for. He was inexorable that stocks allow a ample safety margin after weighting the trade-off between their monetary value and their intrinsic value. The debate added up to Buffett simply he queried whether the standards were too demanding and induced the company to drop down on big successes that had more qualitative values. That same year the Buffetts birthed their 2nd baby, Howard Graham Buffett. In 1956, Benjamin Graham adjourned and shut down his partnership. At this time Buffetts own savings comprised over $174,000 and he commenced Buffett Partnership Ltd., an investment partnership in Omaha. In 1957, Buffett had three partnerships manoeuvering the whole year. He bought a five-bedroom stucco mansion in Omaha, where he even dwells, for $31,500. In 1958, the Buffetts 3rd baby, Peter Andrew Buffett , was born. Buffett controlled five partnerships the whole year. In 1959, the company raised to six partnerships running the full year and Buffett was acquainted to Charlie Munger. By 1960, Buffett had seven partnerships manoeuvering: Buffett Associates, Buffett Fund, Dacee, Emdee, Glenoff, Mo-Buff and Underwood. He asked one of his partners, a physician, to ascertain ten other physicians willing and able to invest $10,000 each in his partnership. Eventually eleven agreed. In 1961, Buffett unconcealed that Sanborn Map Company reported for 35% of the partnerships pluses. He explicated that in 1958 Sanborn stock traded at only $45 per share when the value of the Sanborn investment portfolio was $65 per share. This implied that vendees valued Sanborn stock at minus $20 per share and were involuntary to bear more than 70 cents on the dollar for an investment portfolio with a map business injected for nothing. This gained him a spot on the board of Sanborn. WAY TO RICHES In 1962, Buffett turned a millionaire, because of his partnerships, which in January 1962 had a surplus of $7,178,500, of which over $1,025,000 belonged to Buffett. Buffett integrated all partnerships into one partnership. Buffett divulged a textile fabricating business firm named Berkshire Hathaway. Buffetts partnerships started buying shares at $7.60 per share. In 1965, when Buffetts partnerships aggressively started buying Berkshire, they paid $14.86 per share while the company had working capital of $19 per share. This didnt include the evaluation of fixed assets (factory, machinery and equipment etc.). Buffett took charge of Berkshire Hathaway at the board meeting and appointed a new president, Ken Chace, to feed the company. In 1966, Buffett closed the partnership to fresh income. Buffett published in his letter: unless it seems that conditions have changed (under some considerations added capital would better final result) or unless new partners can contribute some asset to th e partnership other than simply working capital, I think not to admit more additional partners to BPL. In his second letter, Buffett declared his foremost investment in a private business concern Hochschild, Kohn and Co, a privately owned Baltimore emporium. In 1967, Berkshire disbursed its initiatory and exclusive dividend of 10 cents. In 1969, observing his most eminent year, Buffett neutralised the partnership and shifted their assets to his partners. Among the assets, disbursed were shares of Berkshire Hathaway. In 1970, as chairman of Berkshire Hathaway, Buffett commenced publishing his now-famous yearly letters to stockholders. However, he survived solely on his salary of $50,000 per year, and his external investment revenue. In 1979, Berkshire commenced the year dealing at $775 per share, and finished at $1,310. Buffetts income reached $620 million, ranking him on the Forbes 400 for the first time. In 2006, Buffett declared in June that he step by step would impart 85% of his Berkshire retentions to five foundations in annual gifts of stock, starting in July 2006. The largest share would go to the Bill and Melinda Gates Foundation. In 2007, in a letter to shareholders, Buffett declared that he was seeking a younger successor, or possibly successors, to execute his investment business. Buffett had antecedently picked out Lou Simpson, who runs investments at Geico, to meet that role. However, Simpson is only six years younger than Buffett. In 2008, Buffett became the wealthiest man in the world dethroning Bill Gates, worth $62 billion reported by Forbes, and $58 billion reported by Yahoo. Bill Gates had been first on the Forbes list for 13 successive years. On March 11 2009, Bill Gates regained number one of the list according to Forbes magazine, with Buffett second. Their values have dropped to $40 billion and $37 billion respectively, which is probably an outcome of the 2008/2009 economical downswing. BUSINESS ACQUISITION In 1973, Berkshire commenced to gain stock in the Washington Post Company. Buffett became close acquaintances with Katharine Graham, who disciplined the company and its flagship newsprint, and became a member of its directorate. In 1974, the SEC opened up a schematic investigation into Warren Buffett and Berkshires attainment of WESCO, referable possible engagement of interest. No accusations were brought. In 1977, Berkshire indirectly bought the Buffalo Evening News for $32.5 million. Fair charges began, inspired by its competitor, the Buffalo Courier-Express. Both compositions lost income, till the Courier-Express folded in 1982. In 1979, Berkshire started to acquire stock in ABC. On March 18, Capital Cities declared $3.5 billion. Leverage of ABC stormed the media industry, as ABC was approximately four times larger than Capital Cities was at that time. Warren Buffett, Chairman Berkshire Hathaway, served finance the deal in return for a 25 percent stake in the merged company. The newly merged company, titled Capital Cities/ABC (or CapCities/ABC), was pressured to trade away a few stations due to FCC ownership conventions. Also, the two companies possessed several radio stations in the equivalent markets. In 1987, Berkshire Hathaway bought 12% stake in Salomon Inc., making it the greatest shareholder and Buffett the director. In 1990, a outrage involving John Gutfreund (former CEO of Salomon Brothers) rose up. A knave trader, Paul Mozer, was passing on bids in excess of what was permitted by the Treasury rules. When this was ascertained and brought to the aid of Gutfreund, he didnt immediately debar the knave trader. In August 1991, Gutfreund leftover the company. Buffett turned CEO of Salomon until the crisis surpassed. On September 4 1991, he evidenced before Congress. In 1988, Buffett commenced purchasing stock in Coca-Cola Company, finally buying up to 7 percent of the company for $1.02 billion. It would come out to be one of Berkshires most profitable investments, and one which it still controls. In 2002, Buffett entered in $11 billion worth of forward contracts to deliver U.S. dollars against other currencies. By April 2006, his overall gain on these contracts was over $2 billion. In 1998, he took on General Re, (in an infrequent move, for stock). In 2002, Buffett got interested with Maurice R. Greenberg at AIG, with General Re providing reinsurance. On March 15, 2005, AIGs board forced Greenberg to leave office from his post as Chairman and CEO under the shadow of unfavorable judgment from Eliot Spitzer, attorney general of the state of New York. On February 9, 2006, AIG and the New York State Attorney Generals office agreed to a settlement in which AIG would pay a fine of $1.6 billion. In 2009, Warren Buffett endowed $2.6 billion as a part of Swiss Res raising equity capital. Berkshire Hathaway already possesses a 3% stake, with rights to possess more than 20%. LATE 2000S RECESSION Buffett encounter criticism during the -subprime crisis of 2007-2008, component of the late 2000s recession, that he had apportioned capital too early leading in suboptimal deals. Buy American. I am. To quote Warren Buffetts popular opinion piece published in the New York Times. Buffett has called the 2007s downswing in the financial sector poetic justice. Buffetts Berkshire Hathaway met a 77% drop in earnings during Q3 2008 and many of his new deals look to be running into heavy mark-to-market losses. Berkshire Hathaway gained 10% perpetual preference shares of Goldman Sachs .Some of Buffetts exponent puts that he wrote (sold) are presently running around $6.73 billion mark-to-market losses. The scale of the expected loss inspired the SEC to demand that Berkshire produce, a more robust revealing of components accustomed assess the contracts. Buffett also helped Dow Chemical pay for its $18.8 billion takeover of Rohm Haas. He, thus, turned the only largest shareholder in the enlarged group with his Berkshire Hathaway, which offered $3 billion, emphasising his helpful role during the prevailing crisis in debt and equity markets. In October 2008, the media rumoured that Warren Buffett had harmonised to buy General Electric(GE) preferred stock. The process admitted extraordinary incentives: he accepted an option to buy 3 billion General Electric at $22.25 in the incoming five years, and also accepted a 10% dividend (due within three years). In February 2009, Warren Buffett sold piece of Procter Gamble Co, and Johnson Johnson shares from his portfolio. In addition to traces of anachronism, queries have been elevated as to the wisdom in keeping some of Berkshires major retentions, including The Coca-Cola Company (NYSE:KO) which peaked at $86 in 1998. Buffett talked over the troubles of acknowledging when to sell in the companys 2004 annual report: That may appear comfortable to do when one looks through an always-clean, rear-view mirror. Unluckily, however, its the windscreen through which investors must peer, and that glass is invariably fogged.. In March 2009, Buffett expressed in a cable television interview that the economy had fallen off a cliff Not only has the economy slowed down a lot, but people have really changed their habits like I havent seen. Additionally, Buffett awes we may revisit a 1970s level of ostentation, which led to a painful stagflation that lasted many years. PERSONAL LIFE Buffett married Susan Thompson in 1952. They had 3 kids, Susie, Howard, and Peter. In 1977, the couple started inhabiting separately, though they stayed married until her death in July 2004. Their daughter Susie lives in Omaha and does philanthropic work through the Susan A Buffett Foundation and is a national board member of Girls, Inc. In 2006, on his seventy-sixth birthday, he wedded his never-married longtime-companion, Astrid Menks, who was then sixty years old. From 1977, since his wifes departure, She had lived with him to San Francisco. It was Susan Buffett who set for the two to meet before she left Omaha to engage her singing career. All three were close and vacation cards to friends were signed Warren, Susie and Astrid. Susan Buffett briefly talked over this relationship in an interview on the Charlie Rose Show shortly earlier her death, in a rare glimpse into Buffetts personal life. In 2006, His annual earnings was about $100,000, which is little as compared to senior exe cutive remuneration in comparable companions.In 2007, and 2008, he earned a total compensation of $175,000, which enclosed a basic wage of just $100,000. He dwells in the same house in the central Dundee vicinity of Omaha that he purchased in 1958 for $31,500, today assessed at around $700,000 (though he too does have a $4 million home in Laguna Beach, California). In 1989, after having spent almost 10 million dollars of Berkshires funds on a private jet, Buffett sheepishly named it The Indefensible. This act constituted a break from his past conviction of wasteful purchases by early CEOs and his account of practising more public conveyance. He stays a desirous player of the card game bridge, which he acquired from Sharon Osberg, and plays with her and Bill Gates. He passes twelve hours a week playing the game. In 2006, he sponsored a bridge match for the Buffett Cup. Shapely on the Ryder Cup in golf, declared straightaway ahead it, and in the same city, a squad of 12 bridge players from the United States took on 12 Europeans in the event. Warren Buffett acted with Christopher Webber on an animated series with head Andy Heyward, of DiC Entertainment,and then A Squared Entertainment. The series characteristics Buffett and Munger, and instructs children healthy financial habits for life. Buffett was elevated Presbyterian but has since represented himself as agnostic as it strikes religious beliefs. In December 2006, it was accounted that Buffett doesnt carry a cellphone, does not have a computer at his desk, and driveways his personal automobile, a Cadillac DTS. Mr Warren Buffet wears off tailor-made suits from the Chinese label Trands, before he used to wear Ermenegildo Zegna. LINEAGE Buffetts DNA report disclosed that his paternal roots hail from northern Scandinavia, while his maternal roots most likely have roots in Iberia or Estonia. Despite general propositions to the contrary, and the casual friendly relationship which has formed between their families, Warren Buffett has no clear reference to the well-known vocalist Jimmy Buffett. POLITICS In addition to, other political contributions across the years, Buffett has officially certified and made campaign contributions to Barack Obamas presidential campaign. On July 2, 2008, Buffett attended a $28,500 per plate fundraiser for Obamas campaign in Chicago hosted by Obamas National Finance Chair, Penny Pritzker and her husband, as well as Obama advisor Valerie Jarrett. Buffett supported Obama for president, and suggested that John McCains aspects on social justice comprised so far from his own that McCain would need a lobotomy for Buffett to alter his indorsement.During the second 2008 U.S. presidential debate, nominees John McCain and Barack Obama, later on being asked first by presidential debate intermediator Tom Brokaw, both referred Buffett as a potential future Secretary of the Treasury. Later, in the third and concluding presidential debate, Obama mentioned Buffett as a potential economic consultant. Buffett was also finance consultant to California Republican Governor Arnold Schwarzenegger on his 2003 election crusade. COMPOSITIONS Warren Buffetts compositions include his annual reports and various articles. He admonished about the harmful effects of inflation: The arithmetic makes it plain that pomposity is a far more annihilating tax than anything that has been acted out by our general assembly. The inflation tax has a tremendous ability to merely wipe out capital. It creates no divergence to a widow with her savings in a 5 percent passbook account whether she pays 100 percent income tax on her interest money during a period of zero inflation, or pays no income taxes during years of 5 percent inflation. In his article The Superinvestors of Graham-and-Doddsville, Buffett controverted the scholarly Efficient-market hypothesis, that baffling the SP 500 was pure chance, by spotlighting a number of pupils of the Graham and Dodd value adorning school of thought. In addition to himself, Buffett named Walter J. Schloss, Tom Knapp, Ed Anderson (Tweedy, Brown Inc.), Bill Ruane (Sequoia Fund, Inc.), Charles Munger (Buffetts own business partner at Berkshire), Rick Guerin (Pacific Partners, Ltd.), and Stan Perlmeter (Perlmeter Investments). In his November, 1999 Fortune article, he admonished of investors delusive anticipations: Let me summarise what Ive been saying about the stock market: I think its very hard to come up with a compelling case that equities will over the next 17 years perform anything likeanything liketheyve performed in the past 17. If I had to pick the likeliest return, from appreciation and dividends combined, that investors in aggregaterepeat, aggregatewould earn in a world of constant interest rates, 2% inflation, and those ever injurious frictional costs, it would be 6%. PHILANTHROPY The following quotation from 1988, respectively, highlights Warren Buffetts thoughts on his wealth and why he long planned to reapportion it: I dont have a trouble with guiltiness about money. The way I see it is that my money represents an tremendous number of claim checks on society. Its like I have these little pieces of paper that I can turn into consumption. If I desired to, I could hire 10,000 people to do nothing but paint my impression everyday for the rest of my lifespan. And the GNP would go up. But the utility of the product would be zero, and I would be keeping those 10,000 people from doing AIDS research, or teaching, or nursing. I dont do that though. I dont use very many of those claim checks. Theres nothing material I want very much. And Im going to give literally all of those lay claim checks to brotherly love when my wife and I die. From a NY Times article: I dont believe in dynastic wealthiness, Warren Buffett said, calling those who raise up in affluent circumstances members of the lucky sperm club. Buffett has written numerous times of his opinion that, in a free enterprise, the plentiful gain oversized advantages for their talents: A market economy creates some lopsided yields to participants. The right talent of vocal chords, anatomical structure, physical strength, or mental powers can produce tremendous piles of claim checks on upcoming national output. Right choice of roots likewise can outcome in lifetime issues of such tickets upon birth. If zero actual investment returns disported a little greater part of the national output from specified stockholders to equally desirable and diligent citizens missing jackpot-producing talents, it would appear improbable to baffle such an abuse to an equitable world as to risk Divine intercession. His children wont come into an important proportion of his wealth. These activities are uniform with affirmations he has made in the past suggesting his opposition to the transfer of outstanding fortunes from one genesis to the next. Buffett once remarked, I would like to give my kids just sufficient so that theyd experience that they could do anything, but not such that theyd experience like doing nothing. In 2006, he auctioned his 2001 Lincoln Town Caron eBay to hike money for Girls, Inc. In 2007, he auctioned off a luncheon with himself that brought up a final bid of $650,100 for a charity. In 2006, he declared a program to bring out his luck to charity, with 83% of it going to the Bill Melinda Gates Foundation. In June 2006, Buffett devoted approximately 10 million Berkshire Hathaway Class B shares to the Bill Melinda Gates Foundation, valuable approximately US$30.7 billion as of 23 June 2006, building it the greatest charitable contribution in history and Buffett among the leaders in the philanthrocapitalism revolution. The foundation will have 5% of the total contribution on an annualised basis each July, commencing in 2006. Buffett also joined the directorate of the Gates Foundation, although he doesnt program to be actively engaged in the foundations investment. This is a substantial shift from previous affirmations Buffett has made, having expressed that most of his fortune would surpass to his Buffett Foundation. In 2004, the majority of the estate of his wife, prized at $2.6 billion, went to that foundation when she died. He also committed $50-million to the Nuclear Threat Initiative, in Washington, where he has assisted as an consultant since 2002. On 27 June 2008, Zhao Danyang, a general manager at Pure Heart China Growth Investment Fund, succeeded the 2008 5-day online Power Lunch with Warren Buffett charity auction with a bid of $2,110,100. Auction continues benefit the San Francisco Glide Foundation. PUBLIC POSITIONINGS Buffetts deliveries are recognised for merging business discussions humorously. Every year, Buffett presides over Berkshire Hathaways yearly stockholder assembling in the Qwest Center in Omaha, Nebraska, an issue eviscerating over 20,000 visitors from both United States and abroad, giving it the nickname Woodstock of Capitalism. Berkshires yearly articles and letters to stockholders, prepared by Buffett, frequently experience coverage by the financial media. Buffetts compositions are recognised for carrying well-written quotations laying out from the Bible to Mae West. as well as Midwestern advice, and several jokes. Various websites proclaim Buffetts merits while others objurgate Buffetts business models or dismiss his investment advice and decisions. WARREN BUFFETT AS A LEADER What he does understand is business. At 5 Years old, he started earning income. At only 6 years old, Buffett bought 6-packs of Coke from his grandpas grocery store for 25 cents and resold all of the bottles for a nickel, pocketing a 5 cent income. While other children of his age were enjoying hopscotch and jacks, Warren was earning income. Five years later, Buffett underwent his step into the world of high finance. At 11 years old, he bought 3 shares of Cities Service Preferred at $38 per share for both himself and his older sister, Doris. Just after his buying of the stock, it fell down to just over $27 per share. A scared but spirited Warren held his shares until they rebounded to $40. He quickly sold them an error he would shortly come to regret. Cities Service stroke up to $200. The experience taught him one of the basic lessons of investing: Patience is a Virtue. As he commenced on his investment career, he had invested among others in businesses in textiles and newspapers. He knew the newspaper business from experience: he was a paper boy as a adolescent. When he was investing in these businesses, the related industries were in great downslope or integration. The textile business is an industry unexhausted from the industrial revolution. As fabricating moved to inexpensive labor countries, American textile manufacturers contracted. In the 19 th century, Newspapers growth industry, competing with television and radio for news were consolidating from a rivalrous market of numerous newspapers to one major monopoly newspaper in major towns. Wall Street wasnt fascinated in putting in these business concerns, so these were value bargains that pulled in Buffet. By investing in these businesses, Buffet got discounted assets and cash flows which he could utilise to invest in other businesses. One biased and negative perspective of Buffet would be as a scavenger of American business: acquiring fat on the misfortunes of asset rich, but impassive, turning down, and tedious businesses. However, in realism, he stands by businesses in which he invests, he makes sure that the business is a benevolent business. He normally buys businesses and seldom deals them. For instance, GEICO Insurance is among his core properties, he has controlled GEICO most of his investment vocation. When he brought in Berkshire Hathaway, it was a textile business, asset rich and with a stabilise cash flow. But Wall Street considered the textile industry as a worsening business. Berkshire did finally get out of the business of textiles, but it owned among the last textile manufactory in America. If one purchased a share of Berkshire Hathaway just about the time Buffet did, approximately $8, and held it to today, its worth is about ten thousand times its value in 1965, over $80,000. Buffet was progressive in the domain of efficaciously utilising capital. Before the crowd, Buffet realised the businesses of insurance and reinsurance as having great value of cash flow. Berkshires golden business is reinsurance. Reinsurance is the wholesale end of the insurance business, involving large sources of comparatively quick assets. Buffet knew what to do with that cash pool and how to invest it. In the early 1980s the insurance companies cut costs on premiums to keep market share. They wanted to reveal constant increase for the market idols. On the other hand, Buffet realised that writing policies for any kind of chance wasnt judicious. He just wrote policies that added up to him. He acknowledged that finally, losses would force underwriters to recede and premiums would hike. in 1985, When the insurance market reversed, the industry was having terrible losses and several companies bring down the reporting they proposed. The insurance companies created a miserly market with their hesitation to issue policies, partly because their reserves were at an wane. Buffet came forward to the plate, boot with cash, he was set to publish big policies, at his own terms and conditions, offcourse. Investments in securities are probably to interest this type, especially investments in blue chips securities. ISTJs [Inspector Guardians] are not probably to take chances either with their personal or others money. Efficient and effective use of capital have been Buffets countersigns all his life. We simply attempt to be fearful when others are greedy and to be greedy only when others are fearful. is his policy.

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Availability It requires a great deal of money to fund the use of assistive technology in schools. There are training costs, teacher’s salaries to be paid, and the expenses of constantly upgrading technology. It also requires a great deal of testing to figure out what students have disabilities and what the best course of action would be to aid their learning. For students that attend school in a low income neighborhood, the facilities they are exposed to are most likely not up to par with the standards of higher education, or at least can not compete with the technology in schools in higher income neighborhoods. People with higher income live in better areas and they pay more in taxes, which, in part, goes to the schools their children attend. These schools are more likely to have teachers that are sufficiently trained in the different technologies used to help the students. The socioeconomic stand point also highlights the fact that people with more money will have more resources outside of schools to help their children receive the best education possible. Whether it be hiring tutors, investing in computer programs or just going over the children’s homework with them, it is often easier for families with higher income to provide these resources to their struggling children. Teachers must be well trained in the uses of the technologies needed to help the students in their classrooms. Mull and Sitlington stated in a 2003 journal article: Successful integration of computer technology and assistive technology into special education programs depends on the training of the professional required to use it, and they cannot be expected to teach students how to use the technology if they themselves have not been properly taught its uses. (pp. 26-32) If teachers are poorly trained, or not trained at all, students receive little or no useful assistance with their learning. There are many different kinds of technologies used to help students perform better in the classroom. There are proof reading programs, spell checker, speech synthesis (Bryant, Bryant & Raskind 1998), Braille calculators, printers and typewriters, as well as electronic readers (Bryant & Rivera, 1995). Also useful are tutors, interpreters and note takers, to name a few. Some other techniques that proved helpful in the classroom setting, as stated by Bryant and Rivera’s (1995) study, are instruction and modeling, grading, rewards, materials and resources, activity structure and roles, and both individual accountability and collaborative/social skills.

Laser Intruder Alarm System

[LASER BASED SECURITY ALARM SYSTEM] This Document contains Project Report of Autumn 2012 of Course CT-111. PROJECT REPORT LASER BASED SECURITY ALARM ? An Alarm is a type of security equipment that can be used to safeguard houses and property. ? Now a days Burglar Crimes are continually rising with each passing day. ? Many have lost homes and families through violent burglaries in many countries ? Some of them lost most precious things such as Jewelry, Vehicles, huge investments in banks etc.. ? This led to the development of ALARM SYSTEM Basic circuit Alarm Interface: ? We used LDR to detect Laser Light. LDR pin was Fed to Op-Amp input leg. ? Clock pulse to 4017 was taken from Op-Amp output pin. Light Dependent Resistor (LDR) ? LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 1000 000 ohms, but when they are illuminated with light resistance drops dramatically. ? Which acts as an sensor for our circuit. Op-Amp-741 ? The OP AMP is a ‘Linear Amplifier ? Its main purpose is to amplify (increase) a weak signal ? The OP-AMP has two inputs, INVERTING -2nd pin and NONINVERTING – 3rd pin, and one output at pin 6 1.An inverting amplifier ? Leg two is the input and the output is always reversed. In an inverting amplifier the voltage enters the 741 chip through leg two and comes out of the 741 chip at leg six. If the polarity is positive going into the chip, it becomes negative by the time it comes out through leg six. The polarity has been ‘inverted’. 2. A non-inverting amplifier ? Leg three is the input and the output is not reversed. In a non-inverting amplifier the voltage enters the 741 chip through leg three and leaves the 741 chip through leg six. This time if it is positive going into the 741 then it is still positive coming out.Polarity remains the same. How it helps ? ? When the illumination on LDR stops its resistance increas es so the leg 2 of Op-Amp gets less voltage. ? Then it acts as non-Inverting amplifier. ? It gives high voltage to transistor which ultimately passes current to buzzer and the buzzer buzzes. 4017-Timer ? The 4017 decade counter has ten outputs which go HIGH in sequence when a source of pulses is connected to the CLOCK input and when suitable logic levels are applied to the RESET and ENABLE inputs. ? Internally, the 4017 contains five bi-stable subunits. These are interconnected in a pattern known as a Johnson counter.The outputs of the bi-stables are decoded to give the ten individual outputs. Operating voltages and currents of 4017 Timer: ? Minimum-6v ? Maximum-15v ? Max current-15mA ? Max speed of operation-5MHz Pin Configuration: Output waveforms of 4017 Timer: Sensor Interface.. ? What if some Authentic Person want to enter into say some Bank-Locker system in some Banks. ? Here we will provide a unique Identification card. ? We used a sensor to recognize and electronic prototype d platform to switch off the Alarm system. Basic Circuit for Slot Sensor: Slot Sensor Working Principle: It contains an Infrared Light Emitting Diode and an photo transistor. ? When power is supplied to the IR-LED it emits IR rays towards the photo transistor. ? There is a finite voltage drop across resistor. ? In the absence of light, output carrier has high voltage. What is arduino? ? It is an open-sourced free electronic prototyping platform. ? In our project we used the arduino uno microcontroller. ? Uno has five analog inputs. ? Six pwm signal outputs. ? In our project Uno facilitates the use of the slot sensors. Code: ? The code consists of two parts, both mandatory o o ? ? ? 1. setup() 2. loop() etup() is used to set the various ports of the uno as i/o. loop()- this part of the code is run indefinetly. void setup() { pinMode(8,OUTPUT); pinMode(A0,INPUT); pinMode(A1,INPUT); pinMode(A2,INPUT); pinMode(A3,INPUT); Serial. begin(9600); } // sets pin 8 as OUTPUT port. // sets A0-5 // †¦Ã¢â‚¬ ¦. // as INPUTS. They take in analog inputs // from the slot sensors and OpAmp out. /* a communication link between Uno and computer is set at 9600 baud. */ void loop() { int a0=analogRead(A0); int a1=analogRead(A1); int a2=analogRead(A2); // four variables a0-a3 are integer variables // these take in analog input values from the // corresponding ports. nt a3=analogRead(A3); // the input voltage what ever voltage is represented as a 0-1024 bit value. if( ! (a0>300 && a1>300 && a2>300 )) { If(a3>500) { tone(8,1000); buzzer at 8 /* a pwm signal with duty-cycle 50% is sent to a port with a time period of 1sec. */ delay(100); } } noTone(8); Transmitter & Receiver Interface: ? Say in some apartments or malls if we use Laser alarm system, if there is any robbery the alarm should beep at the security guard/control room. ? We will transmit the message to all security systems in the mall/apartment So that we can alert them. We used RF-Transmitter and Receiver to transmit the message. ? We used Encoding and Decoding Schemes for protected transmission. ? For that we used HT12E(Encoder), HT12D(Decoder). ? For Demonstration purpose we are using LED’s to show the received message. Transmitter & Receiver: ? RF module comprises of an RF Transmitter and an RF Receiver. The transmitter/receiver (Tx/Rx) pair operates at a frequency of 434 MHz. ? In this RF system, the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK). An RF transmitter receives serial data and transmits it wirelessly through RF through its antenna connected at pin4. ? The transmission occurs at the rate of 1Kbps – 10Kbps. The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter. Overall view of Transmitter and Receiver: TWS-434 Transmitter: ? TWS-434: The transmitter output is up to 8mW at 433. 92MHz with a range of approximately 400 foot (o pen area) outdoors. Indoors, the range is approximately 200 foot ? The TWS-434 transmitter accepts digital inputs, can operate from 1. 5 to 12 Volts-DC Encoder-HT12E: This 18 pin IC consists of 8 address pins and 4 data pins with a transmission enable(TE) and oscillator pins ? Transmission takes place from DOUT pin only when TE pin is grounded. ? Address bits are significant because at the receiver the decoder matches the address bits and latch the output only when address bits are matched. Transmitter Circuit: †¢ The message is present at the Data pins in the form of logic state (1 or 0). †¢ Whenever a data pin is grounded along with TE, a 12 bit message signal is generated with its first 8 bits representing the address state and last 4 bits containing the data. The 0 state is encoded as a pulse higher duration and 1 state is encoded as pulse with shorter duration RWS-434 Receiver: †¢ RWS-434: The receiver also operates at 433. 92MHz, and has a sensitivity of 3uV. Th e RWS-434 receiver operates from 4. 5 to 5. 5 voltsDC, and has both linear and digital outputs. Decoder-HT12D: ? The decoder receives serial address and data from a RF receiver which catches data through antenna. ? It compares the serial input data 3 times continuously with its local address. If no error or matched codes are found then the input data codes are decoded and then transferred to the output pin. The VT pin also goes high to indicate a Valid Transmission (VT). Soldering: ? ? We used chip sockets for Soldering purpose, So that we can prevent chips burning out while soldering. We used female strip for soldering in order to prevent RF-Transmitter and Receiver from burning off’s. Individual Contributions Nagendra Chowdary Before deciding on this project of LASER based intruder detection and security system, we had ideas about two or three other projects. We sat down in group and took up this project because we could divide work to each and every member in this project. I came up with the idea of using RF Transmitter and receiver so that in case of intruder detection, we can alarm the security person at some other place. I also spent considerable time on studying about the Slot Sensors which we have used to validate the entry of an authentic person. Apart from this, soldering was not an easy task for us as we were doing it for the first time. We made mistakes during soldering and had to de-soldering the circuit many times. Due to this, we all had to contribute to soldering part in turns.Circuit assembling was the most important aspect of our project. Earlier we had taken up a circuit from â€Å"Electronics For You† magazine. We spent almost two days on assembling that circuit but it didn’t work. After that we decided to change the circuit and instead of using LASER detecting diode, we used photo resistors. We tried to make the circuit simpler, so I studied all the components of the circuit and tried to remove some of them to see if th e circuit was still functioning. Apart from this, I compiled the data given by my group members to make the final presentation.Abhinav Tripathi Id: 201101001. We had decide to make a LASER based intruder detection alarm but I thought that it will be better to make it into a security system to validate the entry of authentic people. For this purpose I thought of making a card swapping system using LED and photoresistors so that when a person comes with a valid card the buzzer should not beep. Later, we searched internet and I decided to use slot sensors for this purpose. All the group members, suggested ways of integrating the buzzer and the sensor interface to ensure desired functionality.Soldering seemed to be tough task for us. I started with the soldering and was later joined by other group members too. I also made contribution in debugging the circuit several times when it didn’t work. All of us studied about the various components of the circuit. I did focused study of t he Timer- 4017 and the encoder used in RF transmitter. Apart from this, I also devoted time to understand the functioning of the slot sensors and finding equivalent resistance for slot sensor circuit, implemented it in our circuit. Srinivas SriVasthav Bontula Id-201101025.After we decided on the topic that is Laser Based Intruder Alarm. I came up the Circuit . Our first attempt was a failure. In our first attempt we used Voltage Regulator IC-7805 , Phototransistor L14F1, Opamp IC-LM356, Timer IC-555, Transistor – BC548. Then we searched for various others circuits, finally while watching some videos on Laser Alarms We found out a circuit . In our second attempt we connected this circuit and it worked. The components we used in this circuit are – Counter – 4017, instead of Phototransistor in the previous circuits we used a LDR( light dependantResistor) , Opamp IC-741. After we finished the basic Laser Circuit we came up with this idea of using an RF Transmitter a nd Reciever , so that we detect the alarm at the place we want. I also spent some time in studying and understanding the circuit. I did my part in connecting the circuit. We assigned tasks to every member of our group regarding the working principles of Laser Circuit, Transmitter , Reciever , Slot Sensor. My task was to study and understand the working of Laser Alarm circuit. First we connected everything on the Breadboard and checked whether the circuit worked.And then finally we soldered the RF transmitter and Reciever on the PCB. I also helped in soldering the circuit. Even after we finished everything our circuit didn’t function properly twice or thrice at that time I helped in debugging the circuit. Karan J. Dave ID: 201101019 I was very excited to do project after we decided the project of Laser Based Security Alarm. First of all I tried to find some circuits of such project in Google and YouTube. We found some 2-3 circuits from different source but in 2 of them we chas ed many problems regarding to buzz on and off alarm. Finally we got one circuit from YouTube.I studied about chips which are used in that circuit. I studied about LDR, OP-AMP and 4017 TIMER. I got the chance to know about inverting and non-inverting OP-AMP. I studied about 4017 TIMER from its datasheet got from the internet and I had known about that from my friends also. I studied about HT12E (Encoder) which was used in RF-Transmitter and HT12D (Decoder) used in RF-Receiver. I did soldering of some of the circuits. I did circuit assembling and debugging with my friends. I did also resource-management work for our project. I really enjoyed the whole project by doing this all things.Thanks to you sir for giving us this wonderful opportunity. From our project we have learnt team-work, time-management and we could feel that now we are the engineers. T Pavan Nagaraju Id: 201101024 Initially I helped in connecting a Alarm Based circuit Interface which consists of Voltage Regulator IC-780 5 , Phototransistor L14F1, Opamp IC-LM356, Timer IC-555, Transistor – BC548. But we are unable to get The Desired Output from It then We Switched to a circuit that does the work of alarm and many of our group mates were not able to understand the working of IC 4017 Timer.Which works using Jonson Counter I understood the Concept and working principle of the Jonson Counter Which is basically made of 5 bi-stable (D-Flip flops) I understood that which a Logic from this 10 states of the Jonson Counter the output pins get hot coded high output. And get to know how this reset button be useful and Implemented in this IC 4017 . As This IC 4017 is made of n-MOS I applied my Digital Logic Knowledge and come to know that there will be some Dynamic Hazards. I had soldered the Receiver part in the RF Receiver And understood why encoding is necessary In any signal transmission .So we can have Bit recovery and Safe Signal transmission. I worked in circuit assembling and debugging circuits. I did the documentation part for the presentation regarding 4017-Timer and Receiver part. Archit Bakliwal ID: 201101005. When we started our project, our key concern was to make a security alarm. But as we proceed further, we also used the idea of slot sensing which is mainly used for the entry of authentic person in banks, buildings etc. But later on, all of sudden, I thought that there is no part of communication in out project. Then everyone realized that we have to do something more than just making an alarm.So, Then, I, along with one of my friend, came up with the idea of making receiver and transmission interface in our project. Soldering is referred as major part of making a circuit. Initially, it seemed to be difficult task because chips were more likely to burn but as I had a little experience with it, so it didn’t remain a tough task for us. I have also played keen role in assembling the circuit which was not an easy task. I have also contributed in making the circu it and have done detailed study on functionality of various components of the circuit.Specially regarding Timer4017,LM71 Opamp, HT12e Encoder, HT12d Decoder, RWS 434 receiver, TWS 434 transmitter etc. This detailed study helped me to know about the components and analyzing the circuit for resource management and documentation. DHARMIK THAKKAR Id: 201101006 Our Project was LASER BASED INTRUDER DETECTION ALARM which could be used for security system in building apartments, banks, malls, etc. The project was extended to validate the entry of some authentic person such that a person with valid card enters the buzzer shouldn’t buzz. For this purpose slot sensors were used to keep a check upon valid entry.The project further used RF Transmitter and Receiver interface so that if some unauthentic entry takes place security system is alerted which was accomplished by glowing LED’s at Receiver interface. My role for the project was study of chips which included analysing availab ility and functionalities of LDR, TWS TRANSMITTER 434, RWS RECEIVER 434 and DECODER HT12D. I helped my team mates in Soldering purpose as it seemed to be tough task for us. Soldering purpose was successfully accomplished without burning chips by the use of chip sockets and female strips. I collected information regarding various phases i. . Alarm, Sensor and RF Transmitter and Receiver interfaces of our project and analysed the circuit for Resource Management and Documentation that could be used for Slide Preparation. I also helped in Circuit Assembling. Prasoon Id: 201101036 After lots of idea's our group stick to the topic that is Laser Based Intruder Detector Alarm in which we created a body which contained a main circuit that produced voltage when light didn’t fall on the LDR. The circuit contained many component that need to be study so I helped in understanding the function of opamp LM 741.The material for our project was hard to find sometime so I was the one of the pr ime candidate for fetching these material. Our circuit also contained audrino board, Slot sensor(for security system) and RF transmitter and receiver these circuits were also hard to make but our group combined to make it look easy. I helped in assembling these circuit many times. Soldering also was a main part of our project which was a difficult task, I helped in many parts of the task also we needed to remove mistake from the circuit and documentation which was also a combined effort, In presentation every one had there slides to make.At the last it’s a combined effort by our group. Ankit Chaparwal ID: 201101017. For the project everybody came up with new innovative ideas, at last we decided to make a laser based intruder detection alarm, but in group discussion we decided to make it in a security system to validate entry of an authentic person. For this purpose we used slot sensors. In the project I helped the Group members in soldering . Other then that I had assembled t he receivers circuit with one of the Group members and also prepared Slide for presentation on LDR .Studied on LDR and thought about how it can be used as a sensor in our circuit. Anuroop Kuppam My involvement in the project , coding the Arduino micro-controller. In our project Arduino provides an interface between the slot sensors and the alarm system. So the micro-controller needs to be coded. The micro-controller takes the input from the slot sensors and then decides whether to enable the alarm system or not. Hence the operating voltages margins of the micro-controller needs to be determined manually.After this was done we used these margins in making the micro-controller work accordingly. Having seen a lot of coding samples on the INTERNET , I came up with a code which serves the purpose of the project . The code then was debugged in certain places and further processed and fine tuned to fit perfectly and decrease various delays that we have encountered in the course of making t he alarm system. I also soldered the various components of the RF receiver and the slot sensor onto the perforated circuit board and debugged the circuit to make it work.

Plants Study Guide (High School) Essay

KEY CONCEPT-Plant life began in the water and became adapted to land. Plants are multicellular eukaryotes, most of which produce their own food through photosynthesis and have adapted to life on land. Plants share many characteristics with green algae. Both are photosynthetic eukaryotes with the same types of chlorophyll. Both also use starch as a storage product and have cell walls that contain cellulose. One ancient species of green algae is the common ancestor of all plants. If it were alive today, it would be classified as a charophycean. Natural selection likely favored individuals of the ancestral charophycean species that could withstand dry periods, until eventually the first true plant species evolved. Life on land presents different challenges from life in the water. These challenges have acted as selective pressures for plant life on Earth. †¢ Retaining moisture: A cuticle is a waxy, waterproof layer that helps hold in moisture. Tiny holes in the cuticle, called stomata, can open and close allowing air to move in and out. †¢ Transporting resources: A vascular system is a collection of specialized tissues that bring water and mineral nutrients up from plant roots and disperse sugars down from the leaves. †¢ Growing upright: Lignin is a material that hardens the cell walls of some tissues, providing structure for plants to grow upright and space for vascular tissue. †¢ Reproducing on land: A pollen grain is a two-celled structure produced by seed plants that contains a cell that will divide to form sperm. Pollen can be carried by wind or animals to female reproductive structures. A seed is a storage device that also protects and nourishes a plant embryo. Plants evolve with other organisms in their environment. †¢ A mutualism is an interaction between two species in which both species benefit. Important mutualisms involving plants include those between plant roots and certain fungi and bacteria, and those between plants and their animal pollinators. †¢ Plant-herbivore interactions have brought about a variety of adaptations in plants that discourage animals from eating them. These adaptations include spines, thorns, and defensive chemicals. Mosses and their relatives are seedless nonvascular plants. These plants must grow close to the ground where they can absorb water and nutrients directly. They also rely on free-standing water to allow their sperm to swim to and fertilize an egg. Therefore, these plants usually live in damp environments. Three phyla fit into the category of seedless nonvascular plants. These include the liverworts (phylum Hepatophyta), the hornworts (phylum Anthocerophyta), and mosses (phylum Bryophyta). Club mosses and ferns are seedless vascular plants. Like seedless nonvascular plants, they rely on free-standing water to allow their sperm to swim to and fertilize an egg. However, a vascular system allows these plants to grow higher above the ground and still transport materials between the roots and the leaves. Two phyla fit into the category of seedless vascular plants. These include club mosses (phylum Lycophyta) and whisk ferns, horsetails, and ferns (phylum Pterophyta). Seeds plants are able to reproduce without free-standing water. Pollen can be carried by the wind or by animals to female reproductive structures, where sperm will form from each pollen grain. Pollination occurs when pollen meets female reproductive structures of the same plant species. Seeds nourish and protect plant embryos and allow plants to disperse to new areas. Seed plants can be grouped according to whether their seeds are enclosed in fruit. †¢ A gymnosperm is a seed plant whose seeds are not enclosed in fruit. A woody cone is the reproductive structure of most gymnosperms. Three phyla fit into the category of gymnosperms. These include cycads (phylum Cycadophyta), ginkgos (phylum Ginkgophyta), and conifers (phylum Coniferophyta). †¢ An angiosperm is a seed plant whose seeds are enclosed in fruit. Angiosperms belong to a phylum of their own, commonly called flowering plants (phylum Anthophyta). A flower is the reproductive structure of flowering plants. A fruit is the mature ovary of a flower. 20.3 KEY CONCEPT The largest phylum in the plant kingdom is the flowering plants. Flowering plants have unique adaptations that allow them to dominate the landmasses of Earth today. †¢ Flowers allow for efficient pollination. Although some flowering plants are pollinated by wind, many are pollinated by animals such as birds or insects. Animals often pollinate flowers while searching for food, so they transfer pollen from flower to flower in a very targeted way. †¢ Fruit, the mature ovary of a flowering plant, plays an important role in seed dispersal. Fruits can take on many forms. Animals may eat fleshy fruits, dispersing the seeds after they have passed through their digestive tracts. Other fruits take the form of burrs that cling to wildlife or fibers that help to spread seeds by wind. Botanists classify flowering plants into two groups based on the number of cotyledons present in the seed. A cotyledon is an embryonic leaf inside a seed. †¢ Monocots have one cotyledon. Monocots generally have leaves with parallel veins, flower parts in multiples of three, and bundles of vascular tissue scattered throughout the stem. Corn, grasses, irises, and lilies are monocots. †¢ Dicots have two cotyledons. Dicots generally have leaves with netlike veins, flower parts in multiples of four or five, and bundles of vascular tissue arranged in rings. Deciduous trees and peanuts are dicots. Flowering plants can also be categorized by stem type and life span. These characteristics help describe mature flowering plants and are commonly used by botanists, gardeners, landscape designers, and horticulturists. †¢ Two stem types are woody and herbaceous. Wood is made up of dead vascular tissue cells that have lots of lignin and cellulose in their cells walls. Woody stems are thick and stiff. Herbaceous stems do not contain wood. †¢ Three basic plant lifespans are annual, biennial, and perennial. Annuals mature from seeds, produce flowers, and die all in one year. Biennials take two years to complete their life cycle. Perennials live for more than two years.

Oral Cancer essays

Oral Cancer essays Approximately 30,000 Americans will be diagnosed with oral cancer every year and of those 30,000 people nearly half of them will die within the next five years. Oral cancer is a very deadly disease that most people know very little about. The death rate associated with oral cancer is particularly high due to the fact that it is discovered late in its development. Oral cancer causes more than 8,000 deaths annually. There are many factors that can cause the development of oral cancer. Oral cancer can be caused by smoking tobacco, smokeless tobacco, excessive consumption of alcohol, and by having a family history of cancer. Age is frequently named as a risk factor for oral cancer, as most of the time it occurs in those over the age of 40. The age of diagnosed patients may indicate a time component in the biochemical or biophysical processes of aging cells that allows malignant transformation, or perhaps, immune system competence diminishes with age. The accumulative damage from other factors, such as tobacco use, are the real culprits. Although it may take several decades of smoking or chewing, to precipitate the development of cancer. Tobacco use in all of its many forms are the leading cause of oral cancer. At least 75 percent of those people diagnosed with oral cancer are tobacco users. When both alcohol and tobacco are combined, the risk of developing cancer increases greatly. Tho se people who smoke and drink have a 15 times greater risk of developing oral cancer. Oral cancer can also be caused by having a family history of cancer, or in other words it can be hereditary. These people make up 25 percent of oral cancer victims who have never used tobacco and no other known risk factors. There are many different signs and symptoms involved with oral cancer. Although one of the real dangers of this cancer, is that in its early stages, it can go unnoticed. However a dentist or doctor can see or feel the precurs ...