Smoke Disavantages Essays

Smoke Disavantages Essays Smoke Disavantages Essay Smoke Disavantages Essay Smoking causes illness and death, among other disadvantages. It is the most preventable lifestyle factor affecting human health. Smoking harms every organ in your body. Your heart, blood vessels, lungs and fertility are all negatively affected by smoking and the chemicals in cigarettes. Heart and Blood Vessel Health Smoking changes the structure of blood vessels. This can lead to the buildup of plaque that hardens and narrows the vessels, causing a disease called atherosclerosis. Atherosclerosis is a common cause of heart attacks and peripheral artery disease. Smoking increases your likelihood of developing high blood pressure. The carbon monoxide inhaled from cigarette smoke interferes with the way oxygen is carried by your blood to organs, including the heart, which links it to heart disease. Smoking also increases the incidence of blood clots, which can lead to strokes. Lung Function The lung is the main target of the smoke inhaled by cigarettes because it has direct contact with the chemicals. Smoking is the most common cause of chronic obstructive pulmonary disease, or COPD, which affects the function of the lungs and how they deliver oxygen into the body. COPD includes chronic bronchitis and emphysema and involves a change in the structure of your lung tissue and airways. If you have asthma, smoking can increase the frequency and severity of attacks. Smoking diminishes lung function, so you may experience shortness of breath even with little or no exertion. Effects on Fertility and Babies Smoking contributes to infertility and decreases the chance of conception whether you are a man or woman. Men who smoke are found to have a reduced total sperm count in addition to a decrease in the sperms ability to fertilize an egg. Smoking diminishes the capacity of an ovary to create eggs that are capable of healthy fertilization. If you are pregnant and a smoker, you increase the risk of a low-birth-weight or preterm baby. An estimated 20 to 30 percent of low-birth-weight babies and 14 percent of preterm births are attributed to smoking in pregnancy, according the U. S. Surgeon Generals report on women and smoking. There is a higher chance your baby will have asthma if you smoked during pregnancy. Even some full-term babies will have diminished lung function if you smoked while pregnant.

Biography of Francis R. (Dick) Scobee

Biography of Francis R. (Dick) Scobee Since the Space Age began, astronauts have risked their lives to further the exploration of space. Among these heroes is the late astronaut Francis Richard Dick Scobee, killed when the space shuttle Challenger exploded on January 28, 1986. born on May 19, 1939. He grew up fascinated by airplanes, so after graduating from Auburn High School (Auburn, WA) in 1957, he joined the Air Force. He also attended night school and acquired two years of college credit. This led to his selection for the Airmans Education and Commissioning Program. He received his bachelor of science degree in Aerospace Engineering from the University of Arizona in 1965. Continuing his Air Force career, Scobee received his wings in 1966 and went on to several assignments, including a combat tour in Vietnam, where he received the Distinguished Flying Cross and the Air Medal. Flying Higher He next attended the USAF Aerospace Research Pilot School at Edwards Air Force Base in California. Scobee logged more than 6,000 hours in 45 types of aircraft, including the Boeing 747, the X-24B, the transonic aircraft technology (TACT) F-111 and the C-5. Dick was quoted  as saying, When you find something you really like to do, and youre willing to risk the consequences of that, you really probably out to go do it. So, when he had the opportunity to apply for a position with NASAs astronaut corps, he jumped at it. He was selected in January 1978, and completed his training and evaluation period in August, 1979. Besides his duties as an astronaut, Mr. Scobee was an Instructor Pilot on the NASA/Boeing 747 shuttle carrier airplane. Beyond the Sky Scobee first flew into space as pilot of the space shuttle Challenger during STS-41C on April 6, 1984. Crew members included spacecraft commander Captain Robert L. Crippen, and three mission specialists, Mr. Terry J. Hart, Dr. G. D. Pinky Nelson, and Dr. J. D. A. Ox van Hoften. During this mission, the crew successfully deployed the Long Duration Exposure Facility (LDEF), retrieved the ailing Solar Maximum Satellite, repaired the orbiting Challenger on board, and replaced it in orbit using the robot arm called the Remote Manipulator System (RMS), among other tasks. Mission duration was 7 days before landing at Edwards Air Force Base, California, on April 13, 1984. That year, NASA honored him with the Space Flight medal and two Distinguished Service awards. Scobees Final Flight The next mission was as spacecraft commander of   the shuttle mission STS-51L, also aboard the space shuttle Challenger. That mission launched on January 28, 1986. The crew included the pilot, Commander M. J. Smith (USN) (pilot), three mission specialists, Dr. R. E. McNair, Lieutenant Colonel E. S. Onizuka (USAF),and Dr. J. A. Resnik, as well as two civilian payload specialists, Mr. G. B. Jarvis and Mrs. S. C. McAuliffe. One thing made this mission unique. It was scheduled to be the first flight of a new program called TISP, the Teacher In Space Program. The Challenger crew included mission specialist  Sharon Christa McAuliffe, the first teacher to fly in space. The mission itself was delayed due to bad weather and other issues.     Liftoff was initially scheduled at 3:43 p.m. EST on January 22, 1986. It slipped to the  23rd, then to January 24th, due to delays in mission 61-C, and then to January 25th because of bad weather at transoceanic abort landing (TAL) site in Dakar, Senegal.   The next launch date was January 27th, but another technical glitch delayed that one, too.   The ​space shuttle  Challenger finally lifted off at 11:38:00 a.m. EST.  Dick Scobee died along with his crew when the shuttle exploded 73 seconds into the mission, the first of two shuttle disasters. He was survived by his wife, June Scobee, and their children, Kathie Scobee Fulgham and Richard Scobee. He was later  inducted into the Astronaut Hall of Fame. Edited by Carolyn Collins Petersen.

E_Week4DQ Essay Example | Topics and Well Written Essays - 750 words

E_Week4DQ - Essay Example The money transfer is done without exposing the account details of the sender to the buyer. On purchase, the money is transferred directly from the buyers account to the sellers account. The transaction can be monitored by the buyer through logging into the Micropay account. In the event of any loss, Micropay refunds the cost of the purchased item and the cost of the initial postage value. This mode of payment offers Privacy, integrity, and non-repudiation and the authorizing entity, in this case Micropay issues the users against any losses. Micropay facilitated payment of large values as well as small values. The cash value accumulated in the Micropay account is transferable to banks and internationally. The system is easy to use and allows users to login and transact business from different locations and computers. One has to register with both EBay and Micropay to be able to utilize Micropay services (Hsiao-Cheng, Kuo-Hua, & Pei-Jen, 2002). How Micropay works Micropay does not pro vide a different way of banking but is just a middleman in the transactional processes. Credit and debit cards transactions travel on different networks. When a merchant a transaction to be made through Micropay, they will do so by paying a small fee which is normally 2 percent of the transaction. There is also an interchangeable fee that is charged for all the companies that take part in the transactions. The fee is universal and is charged for any company that is involved in the process. The part that Micropay comes in is in that both the buyer and the seller deal with Micropay after they have provided their banking details. Micropay then handles all the transactions that will take place between all the banks that will be included and will pay the interchange fee. They will recover the money that they pay for the interchange from the fee they charge for receiving the money. They also get it from the interest they get from the money they left in their accounts (Han Zhang & Haizheng , 2006). I am sure that Micropay will assist us in our e-commerce project in the fact that it will help us to get payments done to various clients. It will also help us secure our money and trust. Their security is trustworthy and we are able to bank on it getting payments and making payments. References Han Zhang & Haizheng, L 2006, Factors affecting payment choices in online auctions: A study of e-Bay traders, Springer, New York. Hsiao-Cheng, Y, Kuo-Hua H, & Pei-Jen K 2002, Electronic payment systems: An analysis and comparison of types, Chiao-Tung University, 1001 Ta-Hseuh Road, Hsinchu 30010, Taiwan IBM Taiwan, Taipei 100, Taiwan Technology in Society. In a 3 to 4 paragraph essay with support from the text theory discuss the following:Â   As a customer, what is your biggest security nightmare and how to you expect the site to protect you? My biggest security nightmare is having our online account hacked and all the funds transferred to other accounts. This will mean that all ou r money for undertaking the e-commerce shall have been lost. Micropay will be of great help in the sense that the online transactions will be secured. Due to the nature of Micropay in the sense that it has all the personal information of many users on the Internet, it has an extra layer of security for the purpose of securing the data it handles on the Internet. The details that it handles include bank account numbers, addresses and credit card numbers. With other online transaction

3(S) Essay Example | Topics and Well Written Essays - 2000 words

3(S) - Essay Example sis, human resource management is a very important element in a business or public organization, as it will ensure that the organization under consideration has highly skilled and efficient employees. This in turn will make the organization to serve its customers in an efficient manner, leading to the achievement of the goals and objectives of the organization under consideration. The government of the United Arabs Emirates has realized on the importance of human resource management. In a bid for the government of the United Arab Emirates to decrease unemployment, and increase the efficiency of its work force, the government has come up with a series of policies aimed at addressing these issues (Werner and DeSimone, 2012). One such policy is the emiratisation of the country’s economy. The government of UAE developed this program, in order to train the citizens of the emirates to be highly competitive employees, and this is through the introduction of a good education system, and sponsoring seminars and trainings that focus on the abilities, skills, and competencies that are needed by employers in the Emirates (Yamamoto, 2013). The intention of this program is to recruit nationals who are in the private and public sector in a manner that is efficient and meaningful. Since the inception of this program, the public sector has made great steps in making this program a success. However, the private sector hasn’t made any progress, with statistic indicating that the citizens of UAE only occupy 0.5% of the total workforce in the private sector. Based on this background, the goal of this paper is to develop an efficient human resource strategy for the government of the UAE. This paper aims at achieving this goal by analyzing the various human resource strategies of the UAE, identifying their weaknesses and strengths. This paper mainly concerns itself with analyzing the emiratisation program of the UAE, and this is because it is the main human resource strategy of

Napoleon Power Essay Example for Free

Napoleon Power Essay From 1799 to 1814, Napoleon Bonaparte was the emperor of France. On November 9, 1799, Napoleon and members of the legislature removed the Directory, dictatorship of five men during the French revolution, from office because the Directory was weak and failed to improve conditions in France. A new constitution was formed consolidating Napoleon’s position and Napoleon was named first consul of the republic because of a vastly agreed plebiscite, a one-time vote by all French men, in December 1799. Bonaparte used his domestic policies, great military tactics, and foreign policies to keep himself in power from 1799-1815. Napoleon established domestic policies in order to maintain order, end civil strife, and gain the popular support he needed in order to keep himself in power. When the Concordat of 1801 was signed by Napoleon and Pope Pius VII, the pope gained the right for French Catholics to practice their religion and Napoleon gained political power in the church. Napoleon’s government paid the clergy, nominated bishops, and exerted influence over the church in France. Additionally, he worked out agreements with elite groups in France in which the groups received favors in return for their loyal service to him. Bonaparte granted amnesty to thousands à ©migrà ©s, nobles who fled France during the revolution, because they took a loyalty oath and returned to France. Additionally, members of the returning elite soon occupied numerous high positions in France. In order to gain the support of the middle class Napoleon established the Civil Code or Napoleonic Code in March 1804. The Napoleonic Code included two principles of the revolution; equality of all male citizens before the law, and absolute security of wealth and private property. The Napoleonic Code also took away many rights gained by women during the French revolution. Women relied on either their fathers or their husbands, and they couldn’t have bank accounts or construct contracts in their own names under the Napoleonic Code. Additionally, since Bonaparte believed in a strong centralized government, he declared himself emperor in 1804. Additionally, Napoleon used military victories to keep himself in power. Napoleon was victorious in war with Austria that ended in 1801 and war with Britain that ended in 1802. Britain and Austria signed a peace treaty at the end of the war that acknowledged an expanded France. Napoleon led his armies to many victories throughout Europe, conquering several countries. Napoleon’s Empire soon became known as the Grand Empire. The Grand Empire he had built had three parts. By 1807 France ruled territory that stretched from Portugal to Italy because of Napoleon’s strong military tactics. The first part of Napoleon’s Empire was an ever-expanding France, which included Belgium, Holland, parts of northern Italy, and a significant portion of German territory by 1810. The second part of his empire contained dependent satellite kingdoms. The third part of Napoleon’s Empire consisted of the allied independent states of Austria, Prussia, and Russia. Napoleon strength of foreign policies is another significant factor that kept him in power. Under Napoleon, French armies spread nationalism, pride in ones country, to conquered countries which led to some peasants and middle class people supporting him. Through his supporters, Napoleon desired to stay in power but because his armies lived off the land, plundered local treasuries, requested food, and requested supplies; many people in conquered countries disliked him. Additionally, Napoleon disposed of several European rulers from countries he had conquered and gave their thrones to members of his family which were incapable leaders. Since the members of Napoleon’s family were bad rulers, many members of conquered countries were dissatisfied with his rule. Although Napoleon wasn’t able to satisfy everyone, his spread of nationalism helped him stay in power. From 1799 to 1815 Napoleon used his foreign policies, great military tactics, and domestic policies to keep himself in power. Napoleon’s strategies throughout his rule proved that his main goal was to keep himself in power. The domestic policies that Napoleon implemented appeased many of the groups I the country which helped keep him I power. During his Reign Napoleon was a brilliant tactician and he defeated armies all over Europe. The strength of Napoleon’s leadership and the Nationalism that followed made other countries citizens desire to be part of his team which contributed to his success.

The Day My Father Began to Understand the Colors of My World :: Personal Narrative, Autobiographical Essay

The world is full of color. It has to be. Where else would we find depth and meaning and purpose? Color comes together to make shape. The vibrancy of blues, reds and yellows all wash over us as we experience life. Everything ruptures with color, even music with its bright highs and dark lows or language spoken with meaning and clarity. Existence is an art and the freedom to express your art a privilege we all hold dear. I discovered the power of expression when I was young. Crayons and scissors filled my mind. I could manipulate a world of my own on paper, shaping its people. I was king. I knew my subjects. They were spread in 2-demensions before me as they struggled to all escape my mind at once. Although my scribbles never quite matched the emotion I felt deep inside me, they were enough. The forms and figures were mine. I created them. I began to know myself as I continued to grow and develop, but I could never reach the ultimate plateau I felt so strongly that I needed. I needed a boost to reach some sort of self-assurance in my ability and my love. I tried to achieve acceptance once. Although I was young, I remember it well. I had spent all day in school creating another expansive world. As my teacher rattled off times tables and division, I furiously created an eight-year-old masterpiece through a storm of colored pencils and erasers. As I perfected each tree in my landscape, I began to feel powerful. I knew what it was to create and to be good; all I needed was for someone to show confidence in my work. My mother picked me up, but I didn't take this opportunity to show her. My picture was special. It deserved the ultimate unveiling. I was going to show it to my father. Dad came home unhappy, as usual, and ready for dinner. I knew better than to involve him yet. As I ate my unnoticed meal, I could barely hold my excitement. After dinner, I ran to my room and unfolded my work along its careful creases. I walked slowly to his chair, carefully and excitedly balancing my masterpiece in my hands. "Look, Dad, look at what I did. I did it today in school all by myself." He turned slowly in his chair, upset because his connection with CNN had been broken.

I deserve to win Essay

I deserve to win this scholarship because I am a hard worker, I am determined, and I have the ability to follow through with the education needed to achieve the goals in my life. I am a straight A student and always looking for a challenge. I am passionate, driven, and have very high expectations. Because of these qualities, I have always put my studies over everything else. I have faith and believe in myself that I will follow through and obtain the quality education that I am striving for. With the strive, determination, and organization I possess, I have already taken and will take some online and college level classes. Since I have taken college classes already, I know what is ahead and I am prepared for the kinds of classes I will be taking. This gives me a better chance of completing my education without giving up. All of these characteristics make me an excellent candidate for this scholarship. I deserve to win this scholarship because I am a hard worker, I am determined, and I have the ability to follow through with the education needed to achieve the goals in my life. I am a straight A student and always looking for a challenge. I am passionate, driven, and have very high expectations. Because of these qualities, I have always put my studies over everything else. I have faith and believe in myself that I will follow through and obtain the quality education that I am striving for. With the strive, determination, and organization I possess, I have already taken and will take some online and college level classes. Since I have taken college classes already, I know what is ahead and I am prepared for the kinds of classes I will be taking. This gives me a better chance of completing my education without giving up. All of these characteristics make me an excellent candidate for this scholarship. I deserve to win this scholarship because I am a hard worker, I am determined, and I have the ability to follow through with the education needed to achieve the goals in my life. I am a straight A student and always looking for a challenge. I am passionate, driven, and have very high expectations. Because of these qualities, I have always put my studies over everything else. I have faith and believe in myself that I will follow through and obtain the quality education that I am striving for. With the strive, determination, and organization I possess, I have already taken and will take some online and college level classes. Since I have taken college classes already, I know what is ahead and I am prepared for the kinds of classes I will be taking. This gives me a better chance of completing my education without giving up. All of these characteristics make me an excellent candidate for this scholarship.I deserve to win this scholarship because I am a hard worker, I am determined, and I have the ability to follow through with the education needed to achieve the goals in my life. I am a straight A student and always looking for a challenge. I am passionate, driven, and have very high expectations. Because of these qualities, I have always put my studies over everything else. I have faith and believe in myself that I will follow through and obtain the quality education that I am striving for. With the strive, determination, and organization I possess, I have already taken and will take some online and college level classes. Since I have taken college classes already, I know what is ahead and I am prepared for the kinds of classes I will be taking. This gives me a better chance of completing my education without giving up. All of these characteristics make me an excellent candidate for this scholarship.

How Should Marianne Berner Respond to the Invitation for Ikea to Have a Representative Appear on the Upcoming Broadcast of the German Video Program?

Numerical Di? erentiation MACM 316 1/9 Numerical Differentiation  ® Suppose we have a list of points x0 < x1 < x2 <  ·  ·  · < xn and corresponding function values f (x 0 ), f (x 1 ), f (x 2 ), . . . , f (x n )  ® A natural question is whether we can use the data above to approximate f ? (x) at some point x ? [x0, xn].  ® The answer is easy provided the points xi are equally spaced so that xi ? xi? 1 = h (constant) and x. The easiest way to motivate derivative formulas is using the definition of derivative f (x + h) ? f (x ) f ? (x) = lim h>0 h which suggests many possible difference formulas: ? (x ) ? f (x + h) ? f (x ) h f (x ) ? f (x ? h) f ? (x ) ? h f (x + h) ? f (x ? h) f ? (x ) ? 2h f (x + 2 h) ? f (x ? 2 h) ? f (x ) ? 4h (forward difference) (backward difference) (centered difference) (wide centered difference)  ·Ã‚ ·Ã‚ ·  ® These formulas are accurate only if h is â€Å"small enough. † October 30, 2008 c Steven Rauch and John Stockie Numerical Di? eren tiation MACM 316 2/9 Example Suppose we’re approximating the derivative of f (x) = 2 sin(3x) using the equally-spaced data x 0. 3000 0. 3250 0. 3500 0. 3750 0. 4000 0. 4250 0. 4500 0. 4750 0. 5000 f (x) 1. 5667 1. 6554 1. 7348 1. 8045 1. 8641 1. 131 1. 9514 1. 9788 1. 9950 The approximations of f ? (0. 4) with h = 0. 1 are: 1. f ? (x) ? f (x+h)? f (x) h f ? (0. 4) ? 1. 9950? 1. 8641 0. 1 = 1. 3090 (40%) 2. f ? (x) ? f (x)? f (x? h) h f ? (0. 4) ? 1. 8641? 1. 5667 0. 1 = 2. 9740 (37%) 3. f ? (x) ? f (x+h)? f (x? h) 2h f ? (0. 4) ? 1. 9950? 1. 5667 0. 2 = 2. 1415 (1. 5%) where the relative errors are computed using the exact value f ? (0. 4) = 6 cos(3 ? 0. 4) = 2. 17414652686004 2. 1 2 y 1. 9 1. 8 1. 7 1. 6 1. 5 0. 25 0. 3 0. 35 0. 4 0. 45 0. 5 0. 55 0. 6 x Figure 1: f (x) = 2 sin(3x) October 30, 2008 c Steven Rauch and John Stockie Numerical Di? rentiation MACM 316 3/9 Example (cont’d) Investigate what happens when h is decreased to 0. 05: x 0. 3000 0. 3250 0. 3500 0. 3 750 0. 4000 0. 4250 0. 4500 0. 4750 0. 5000 f (x) 1. 5667 1. 6554 1. 7348 1. 8045 1. 8641 1. 9131 1. 9514 1. 9788 1. 9950 The approximations of f ? (0. 4) with h = 0. 05 are: 1. f ? (x) ? f (x+h)? f (x) h f ? (0. 4) ? 1. 9514? 1. 8641 0. 05 = 1. 7460 (20%) 2. f ? (x) ? f (x)? f (x? h) h f ? (0. 4) ? 1. 8641? 1. 7348 0. 05 = 2. 5860 (19%) 3. f ? (x) ? f (x+h)? f (x? h) 2h f ? (0. 4) ? 1. 8641? 1. 7348 0. 1 = 2. 1660 (0. 4%) 4. f ? (x) ? f (x+2h)? f (x? 2h) 4h f ? (0. 4) ? . 9950? 1. 5667 0. 2 = 2. 1415 (1. 5%) Notice that: †¢ The forward and backward difference formulas (1 and 2) have similar accuracy. †¢ The centered difference (3) is much more accurate than the one-sided differences. †¢ Decreasing h increases the accuracy of the approximation. Question: Can this be explained? October 30, 2008 c Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 4/9 Error Analysis To analyse the error in ? nite difference formulas, use Taylor series approximations. Examp le 1: Forward difference formula †¢ Write the Taylor polynomial of degree n = 1, with error term: ? (x + h) = f (x ) + f (x ) h + f (c) 2 h2 †¢ Then f (x + h) ? f (x ) h ? = f (x ) + f (c) 2 h = f ? (x ) + O (h) †¢ Decreasing h clearly reduces the error. Example 2: Centered difference formula †¢ Taylor polynomials for f (x + h) and f (x ? h) to O (h4): f (x) 2 f (x) 3 f (4) (x) 4 f (5) (c1 ) 5 f (x + h) = f (x) + f (x) h + h+ h+ h+ h 2 6 4! 5! ? f (x ? h) = f (x) ? f ? (x) h + f (x) 2 h2 ? f (x) 6 h3 + f (4) (x) 4! h4 ? f (5) (c2 ) 5! h5 †¢ Subtract the second equation from the ? rst and divide by 2h: f (x) 2 f (x + h) ? f (x ? h) ? = f (x) + h + O (h4 ) 2h 6 Error in centered formula is smaller (as expected)! October 30, 2008 c Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 5/9 Error Analysis (cont’d) Taylor series can also be used to derive new formulas. Example 3: A second-order one-sided formula †¢ Write the Taylor po lynomials for f (x + h) and f (x + 2h): f (x) 3 f (x) 2 h+ h + O (h4 ) f (x + h) = f (x ) + f (x ) h + 2 6 4f (x) 3 ? 2 f (x + 2 h) = f (x ) + 2f (x ) h + 2 f (x ) h + h + O (h4 ) 3 ? †¢ Form the following linear combination: 4 f (x + h) ? f (x + 2 h) ? 3 f (x ) 2h ? = f (x ) ? f (x) 3 h2 + O (h4 ) Expect this formula to be more accurate than forward/backward differences, and similar to centered formula October 30, 2008 c Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 6/9 Richardson Extrapolation In addition to creating new formulas or reducing h, there is a â€Å"trick† for increasing accuracy:  ® The centered difference formula is missing the odd terms: f ? (x) = f (x+h)? f (x? h) 2h f ? (x) = g0 (h) + O (h2) + O (h4) + O (h6) +  ·  ·  · a  · h2 + + O (h4) + O (h6) +  ·  ·  · (1) Then, write the same difference formula using h : 2 f ? (x) = g0 ( h ) 2 + a  · ( h )2 + O (h4) + O (h6) +  ·  ·  · (2)  ® Eliminate the O (h2) term by taking 4 ? (1) ? (2): 4f ? (x) ? f ? (x) = 4g0 ( h ) ? g0 (h) + 4a  · ( h )2 ? a  · h2 + O (h4 ) + O (h6 ) +  ·  ·  · 2 2  ® Simplify to obtain a formula of higher accuracy: ? f (x) = 4g0 ( h ) ? g0 (h) 2 3 + O (h4) + O (h6 ) +  ·  ·  ·  ® Continue this idea (recursively) to higher orders: 4g0 ( h )? g0 (h) 2 3 + b  · h4 + O (h6 ) +  ·  ·  · = g1 (h) + b  · h4 + O (h6 ) +  ·  ·  · = g1 ( h ) 2 + = 16g1 ( h )? g1 (h) 2 15 + O (h6 ) +  ·  ·  · = g2 (h) + O (h6 ) +  ·  ·  · f ? (x) =  ® In general, gn = October 30, 2008 b 16  · h4 + O (h6 ) +  ·  ·  · 4n gn? 1 ( h )? gn? 1 (h) 2 4n ? 1 Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 7/9 Richardson Extrapolation – Example  ® Consider the data from the earlier example: x 0. 300 0. 325 0. 350 0. 375 0. 400 0. 425 0. 450 0. 475 0. 500 f (x) 1. 5667 1. 6554 1. 7348 1. 8045 1. 8641 1. 9131 1. 9514 1. 9788 1. 9950 g0(h) = f (x+h)? f (x? h) 2h g1(h) = 4g0 ( h )? g0 (h) 2 3 g2(h) = 16g1 ( h )? g1 (h) 2 15  ® Steps in Richardson extrapolation (x = 0. 4 and h = 0. 1) are easy to organize in tabular form: x=0. 4 h=0. 1 h g0 (h) – O (h2 ) g1 (h) – O (h4) g2 (h) – O (h6 ) 2. 1416807698 2. 1741099363 h 2 2. 1660026447 h 4 2. 1721088377 . 1741465220 2. 1741442353  ® Note: Don’t confuse with Newton divided differences!  ® Relative errors (using f ? (0. 4) = 2. 17414652686004): x=0. 4 h=0. 1 g0 (h) h 1. 49 ? 10? 2 g1 (h) g2 (h) 1. 68 ? 10? 5 h 2 h 4 October 30, 2008 3. 74 ? 10? 3 9. 25 ? 10? 4 2. 26 ? 10? 9 1. 05 ? 10? 6 c Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 8/9 Optimal h  ® When applying any ? nite difference formula, †¢ we want h as small as possible so that truncation error is small (Taylor polynomial error term), †¢ we cannot take h too small, otherwise round-off error dominates (subtractive cancellation). There should be an â€Å"optimal h† where truncat ion error and round-off error balance out. Example: Forward difference approximation  ® Evaluate the difference using ? oating point arithmetic: f (x+h)? f (x) h = f (x+h)(1+? 1 )? f (x)(1+? 2 ) , h = fl f (x+h)? f (x) h + where |? i | u = unit roundoff a ·u , h where a is some constant a ·u = f ? (x) + b  · h + h truncation round-off  ® Optimum h occurs roughly when b ·h ? a ·u h =? h ? a ·u b Example: Take f (x) = 2 sin(3x) †¢ Then a ? 4 and b = f (x) 2 = |9 sin(3x)| 9. †¢ Assume single precision arithmetic u = 10? 6: h? †¢ f ? (0. ) = October 30, 2008 4  · 10? 6 9 ? 0. 00066667. f (0. 400667)? f (0. 4) 0. 00066667 ? 2. 16 (0. 65% relative error) c Steven Rauch and John Stockie Numerical Di? erentiation MACM 316 9/9 Below is a representative sketch of the estimates for b ·h †¢ truncation error: a ·u †¢ round-off error: †¢ total error: h b ·h+ a ·u h 20 18 16 total error Total Error (10-3) 14 12 10 truncation error 8 6 round- off error 4 2 0 0 0. 2 0. 4 0. 6 0. 8 1 1. 2 1. 4 1. 6 1. 8 2 h (10-3) Note: Total error has a local minimum near x = 0. 667 ? 10? 3. October 30, 2008 c Steven Rauch and John Stockie

Aboriginal Artist - Susie Bootja Bootja essays

Aboriginal Artist - Susie Bootja Bootja essays Susie Bootja Bootja is from the Balgo community in far north Western Australia. The Balgo community, located at Wirrimanu (Balgo Hills) on the northern edge of the Tanami and Great Sandy Deserts, is one of the most isolated of Australia's desert settlements. Bootja Bootja, along with other Balgo Artist, created one of the most distinctive regional styles known in Aboriginal Art. Bootja Bootja is considered by many to be one of the most innovative and daring painters working in Central Australia today. She is well known, as is all Balgo Artist, for using of extremely vibrant colors and strong ionic designs. Bootja Bootja's persona is as colorful as her paintings. She enjoys telling stories about playing at the waterhole of Kangingarra where she grew up. She worked at one of the early mission stations in the kitchen making bread and helping to serve food to the children. There she met her first husband and had her first child, Lucy. Her husband was killed on a mustering trip due to intertribal conflict and she was left a widow. Later she married Mick Gill, also a Balgo artist and had another six children. Bootja Bootja was one of the first women painters at Balgo. She along with the help of her husband Mick Gill, their son Matthew Gill Tjupurrula and fellow artist Sunfly Tjampitjin became pioneers of early painting at Balgo. Her eldest son, Matthew, with Sister Alice Dempsey from the Street John's Adult Education Center, started the Art Center in Balgo in 1985 and Balgo art became accessible to the outside world. Since then Bootja Bootja has painted fruitfully and is well known for her use of ostentatious greens, pinks and blues. She began using her signature dotted color fields in 1996 and her style continues to flourish. James Cowan, in his book "Balgo: New Directions" has described the work of Susie Bootja Bootja as follows: "She delights in formless or abstract lines. She is more interested in painting content than st...

Ace the Interview Behavioral Nurse

Ace the Interview Behavioral Nurse As in most medical fields where prior experience is required, behavioral nurse interview questions will ask you to provide specific examples from your previous positions. You want to have anecdotes at the ready to show your interviewer that you’re competent, knowledgeable, and well-prepared to join their staff. Describe a situation in which you recently had to handle a difficult and demanding patient.This question is designed to assess your interpersonal skills and ability to resolve conflict. Prepare an anecdote that illustrates your excellent communication skills- including verbal persuasiveness and strong listening abilities, interactions with patients and families, understanding patient needs, explaining treatments, and displaying empathy. Avoid characterizing a patient in an overly negative or in a resentful way, and be careful not to compromise confidentiality.Describe a decision you had to make quickly regarding a patient.For this question, the interviewer will be asses sing  your judgment. Talk them through your decision-making process as you evaluated a memorable  situation and the criteria you used to make a decision. Be able to report back on the appropriateness of your actions in light of the outcome.Tell us about a time where you disagreed with a colleague over the management of a patient.This question is designed to identify your ability to work as part of a team, deal with colleagues maturely, draw on your own internal resources and department protocols for conflict resolution, practice active listening and information gathering, and then your ability to reflect and discuss what you learned from the experience. Avoid expressing anything stronger than a professional difference of opinion with the colleague in question.What changes have you contributed to established practices to improve patient care?If you’re asked this question in an interview, the interviewer is looking at your ability to take initiative, go beyond your routine, think critically and proactively about patient care protocols, and exercising excellent judgment about their implementation. It’s also likely you had to work closely with colleagues to get your changes implemented- be ready to highlight the valuable aspects of that process as well.And finally, four questions that all evaluate essentially the same abilities:Tell me about a challenging problem you faced in your previous job. How did you deal with it?Nursing work often involves a number of daily frustrations. Tell me about some of the frustrations you have dealt with recently.Take me through a typical day in your previous job.How do you manage high stress situations? Give me an example.These last questions test to see if you have an alert mind, evolved stress-management skills, the ability to reflect and assess daily responsibilities, and a degree of self-awareness. Make sure you have specific stories you can reference that showcase the best of your abilities. Practice with a f riend to get low-stakes exposure to how you’ll feel on your actual interview day.Good luck!

Biofuel topic as an emerging technology Essay Example | Topics and Well Written Essays - 1000 words

Biofuel topic as an emerging technology - Essay Example The engineers have stated that they were able to achieve a much higher percentage of energy conversion than what could normal be obtained through natural photosynthesis. This is because the foam does not need to divert some of its energy to help maintain life. It can simply take all of the energy and convert it in larger quantities because of this sole reason. This discovery is amazing and could lead to less crops being destroyed in order to produce biofuels. It will be interesting to see what steps the engineers take to make this production more feasible for a larger scale operation. Body The transformation of unwanted plant material called "biomass" (wood chips, rice husks, grass) into usable fuel is a hot area of scientific research. A recent proposal by Purdue scientists tries to overcome one of the most fundamental problems with so-called biofuel: the high cost of transporting the starting material. If you’re going to take a substance such as wood chips or straw and conve rt it into a usable fuel, you quickly find that it takes a large amount of the biomass in order to make just a small amount of fuel. The scientific description is that biomass has a low energy density. So, trying to transport the huge amount of necessary biomass to a central processing plant becomes prohibitively expensive; you use more fuel transporting the wood chips than you obtain from the fuel transformation process. The Department of Chemical Engineering at Purdue has recently published two scientific articles which attack this problem on a very logical level. Instead of transporting the crude biomass in a bulk, a small portion of the material is used as a hydrogen source which transforms the remaining biomass into a liquid fuel. This intermediate fuel is much higher in energy density and is much less expensive to transport to a central plant for final processing. imagine that you are an orange juice company, looking to reduce your transportation costs. If, instead of transpo rting crates of orange fruits to your factory, you instead transported a crude pulp/juice mixture (produced on site in the orange fields), you could save a lot of money on fuel costs. You reduce the amount of material that you have to ship, and the material that you do transport is more enriched in the part of the orange that you’re interested in. This new method as applied to biofuel is nicknamed "H2Bioil", and uses solar power to split water in the biomass into hydrogen and oxygen. The business of trying to find alternate ways for biofuel production is a profitable one. Thousands of companies are currently racing one another to come up with alternatives to our current biofuel options. Companies are trying to create this fuel through chemical processes that extract sugars from the algae. Perhaps this will lead to more tests being conducted on how to generate energy from different kinds minus using chemicals to get it done. It's important that people realize not only what bio fuels are, but also realize their limitations in terms of the scope of what they can accomplish. A biofuel is any chemical derived from natural foodstocks such as corn or maize which can be burned to provide useful energy. With exposure to the right processing conditions and