Bernoullis Principle and the Wing :: physics bernoulli principle

Well we all love flying in planes from one place to another but have you ever wondered how those large vehicles stay in the air? The answer of coarse is the wings. Now that you know that wings keep a plane aloft you are probably wondering how they work. Wings keep a plane in the air because of Bernoulli's principle. In the following pages you will learn who Bernoulli was and how we can apply his principle to the wing model. Daniel Bernoulli ( 1700 - 1782 ), son of Johann II Bernoulli, was born in the Groningen, Netherlands. At the age of 13, Daniel was sent to Basel University to study philosophy and logic. Later he obtained his master's degree in philosophy at the age of sixteen. Although Daniel was interested mainly in mathematics, his father pushed him into the medical field where he could profit the most. Again, Daniel attended Basel and other colleges around Europe where he obtained his doctorate in medicine in 1720. While studying medicine in Venice, Daniel published his first book entitled Mathematical Exercises. Daniel soon became interested in fluid flow while working with the flow of blood and blood pressure. With the help of the famous scientist Euler, Daniel published his most famous book Hydrodynamica in 1738. In this book Daniel discusses equilibrium, pressure, and speed in fluids which led to Bernoulli's principle. Read on to find out about his principle. The Bernoulli's equation explains the how pressure and velocity are affected as liquid moves through a tube with segments of different area. The fundamental rule shown here is as the speed of a fluid increases, its pressure decreases. Now we can apply this rule to a wing traveling through air, otherwise known as an airfoil. When an airfoil is tilted upwards the air above the airfoil travels faster than the air below the airfoil because it has a greater distance to travel. The higher velocity above the airfoil creates a drop in pressure and the lower velocity below the airfoil creates an increase in pressure. This results in a "push" from the bottom otherwise known as lift. Since the wing is also angled upward a downward push is created from the trailing edge also pushing the airfoil upward. All of this allows a plane to fly. More efficient designs in wings have been made to allow maximum lift for different types of planes.

NanoGene Technologies Essay

NanoGene Technologies, Inc is a life sciences start-up based on nanotechnology. The firm was founded by an unusually large number of people; five employees of the Eastern Institute of Technologies Advanced Materials Sciences Lab (AMSL). The founders worked in different sections of AMSL, but they were working on a set of technologies that were linked in the human genome project. Together, the founders developed techniques and compounds that caused the genes to ‘stretch out and straighten up’ making it much easier for labs to do the cutting and manipulation that is required in diagnostic testing. NanoGene planned to use this technology, which is owned by the Eastern Institute of Technologies, to begin to sell the patented substrate material to diagnostic testing labs around the world. As the business model of NanoGene formed, the founders decided to equally split the equity among the five members and all of them would have the same salary of $120,000. Will Tompkins, one of the founders, was named the CEO. In the first year, NanoGene secured the required intellectual property to the technology by offering the Eastern Institute of Technologies 15% in equity and a 3% royalty on sales. Will Tompkins used one of his contacts, an active angel investor, to obtain the angel funding of $600,000 at $2.25 million post-money valuation. The value proposition, customer segment, and revenue streams are fairly straight forward. NanoGene’s technology offers their target customers, diagnostic testing labs around the world, an easier and faster way to complete diagnostic testing. The sales of the substrate material will provide NanoGene with its source of revenue. Currently, NanoGene is trying to recruit Paige Miller, a Havard Business School graduate who has been doing some consulting for NanoGene. Additionally, NanoGene is in their Series A funding. NanoGene is looking to raise $10 million which will be sufficient to fund them for 18 months, to prove their technology, and to get them to a pilot production. At a meeting with a venture capitalist, NanoGene learned about the issues VCs have with the firm. The first concern the VCs have involves the founding team. The founding team is quite large, five members, and all of the founders are pure scientists with little to no business experience. Generally, the VCs invest in technology based start-ups with a founding team of two to three members. Usually one of the founders has had experience driving the commercialization of technology, typically as a Chief Scientific Officer at an established  firm. The unique size of NanoGene’s founding team and their lack of experience is an area of worry for the VCs. The VCs are also concerned about the founding team’s decision to compensate all founders equally. The scientists are splitting the equity evenly and are receiving a salary of $120,000 which is, at a minimum, $30,000 more than the annual salary of their former jobs at AMSL. VCs believe the founders and future employees should be compensated based on their added value to the company; a strategy commonly practiced in the business world. Typically, biotech CEOs have a higher salary and will retain about 2.5 times as much equity as VP-level founders. The VCs think Will Tompkins should be compensated more and the rest of the founders should be compensated less. NanoGene needs to address the VCs concerns in order for NanoGene to be a viable company. Paige Miller, a consultant for NanoGene, should be part of the solution in eliminating the VCs concerns. The founders have little to no background in business and have not been very professional as a team. In business, team members communicate and are not afraid to disagree with each other. With NanoGene, the founders want to make everyone happy. The scientist agreed to compensate equally since it would have been disruptive in their opinion to try to determine equity share and compensation based on a more complicated set of principles. Members didn’t want to upset the rest of the team. Additionally, the founders are already having disputes about how to compensate future employees. NanoGene needs someone with business experience who can be professional and focus on the goal of the company.  Paige Miller has the business experience and personality NanoGene requires. The only complication is her compensation of $175,000 in salary and 3% of the company equity. Paige Miller can lead the company through the disagreements and difficult challenges they will face in the early stages of development. Will Tompkins does not have enough experience to lead the company and commercialize the technology. The CEO should instead be Paige Miller, who is more qualified than Tompkins. Instead of increasing Tompkins salary and share of equity, NanoGene can compensate Miller. Installing Miller as the CEO will help solve the CEO payment issue and the lack of business experience found at NanoGene. At present, the founders may not be happy about their smaller share of equity and potentially lower salaries, but in the long run, the action of making Miller CEO will pay off. Miller has valuable knowledge of in commercializing technology and running a business, and can guide discussions on the hiring process, the potential compensation policies, the company goals, and company culture. She will also bring the professional touch NanoGene needs. Miller is also one of the few people familiar with the technology and business ideas of NanoGene since she has worked with NanoGene in the past. Without Miller, NanoGene may not get the funding they need to continue as a company. Another top priority of NanoGene is proving the technology. This can’t be done if there is no funding for the VCs. In the future, NanoGene should conduct more market research on diagnostic tests. Currently, NanoGene has a simple value proposition with a very general customer segment. NanoGene needs to identify specific customer segments of high growth and low competition. Research in other value propositions such as cost and accuracy will help also NanoGene’s profitability.

Avoid These 5 Mistakes When NetworkingÂÂ

Avoid These 5 Mistakes When Networking   We all know how daunting networking can be. It’s often the last thing we want to do: going out to â€Å"socialize† when we could be on the couch with take-out and Netflix, having to sell ourselves in every conversation, having to get in front of the right people to make the right impression. But, it has to be done. And it should be done right. Here are 5 common networking pitfalls and how to avoid them.1. Don’t get caught with your pants downEven if you make a last-minute decision to attend, make sure you’re prepared. Don’t forget your business cards. Don’t go up to anyone uninformed. Spend 15 minutes before you hit the party making a game plan- who you’d like to introduce yourself to, what specifically you’d like to accomplish, etc. Do some research into the people and companies you’re likely to run into; this will make for better conversations and you’ll come across as intelligent and on top of your game. Pick yo ur marks and take accurate, appropriate shots.2. Don’t be unprofessionalYou don’t need to  make a special hair appointment or show up in a cocktail dress to a casual after-work event, but you also shouldn’t dress like a slob. Go no lower than business casual, and when in doubt, take your cues from coworkers or other contacts you know are also attending.Once you’re there, act like a professional human. Don’t dismiss people just because they don’t look important. Don’t go around collecting business cards as if you were trick-or-treating. Don’t lie- you’ll always get caught. And make sure to have your elevator pitch practiced and ready to go. There’s nothing worse than being asked what you’re looking for and having to reply â€Å"Uh†¦. Um†¦. Work and stuff?†3. Don’t be naà ¯veAct like you’ve been to a networking event before. Don’t expect a job from every decision-maker you happen to shake hands with. And make sure not to ask for too much from everyone you meet. This is where a little strategic planning can really come in handy. Plan your big asks before you go. Once you’ve made them, try to  relax, act normally, and enjoy yourself. People are just people, after all.4. Don’t be selfishNobody likes a party hog. Don’t be the kind of networker who talks only about herself, thinks only about her needs, barges into conversations uninvited, and otherwise monopolizes everything and everyone. That goes for the shrimp puffs, too.5. Don’t forget to follow upThis is perhaps the most important. If you’ve made good contact with anyone, make sure to send a polite follow-up email the following day. Or even a phone call, depending on your level of connection! And if anyone does you any favors- i.e. puts you in touch with someone or agrees to circulate your resume- make sure to send a gracious thank you ASAP.

AIDS Cases Article Essays

AIDS Cases Article Essays AIDS Cases Article Paper AIDS Cases Article Paper Somewhere among the million children who go to New Yorks publicly financed schools is a seven-year-old child suffering from AIDS. A special health and education panel had decided, on the strength of the guidelines issued by the federal Centers for Disease Control, that the child would be no danger to his classmates. Yet, when the school year started on September 9th, several thousand parents in two school districts in the borough of Queens kept their children at home. Fear of plague can be as pernicious, and contagious, as the plague itself(Fear of dying 1). This article was written in 1985. Since then much has been found out about AIDS. Not enough for a cure though. There probably will be no cure found in the near future because the technology needed is not available. AIDS cases were first identified in 1981,in the United States. Researchers have traced cases back to 1959. There are millions of diagnosed cases worldwide, but there is no cure (Drotman 163). There are about a million people in the United States who are currently infected with HIV (HIV/AIDS 1). It infects the population heavily in some areas of the country and very lightly in other areas. No race, sex, social class, or age is immune (AIDS Understanding 10). AIDS has killed more Americans than the Vietnam War, which killed 58,000(AIDS Understanding 10). AIDS stands for Acquired Immune Deficiency Syndrome. Acquired means that it is not hereditary or introduced by medication. Immune indicates that it is related to the bodys system that fights off disease. Deficiency represents the lack of certain kinds of cells that are normally found in the body. Syndrome is a group of symptoms and signs of disordered function that signal the diagnoses (Hyde 1). You dont catch AIDS, you catch HIV. HIV is the virus that leads to AIDS. HIV stands for Human Immunodeficiency virus. HIV severely damages a persons disease fighting immune system. There are two viruses that cause AIDS. They belong to a group called retroviruses. The first virus is HIV-1. It was isolated by researchers in France in 1983, and in the U.S. in 1984. In 1985, the second one was identified by scientists in France. It is closely related to HIV-1. It is called HIV-2. HIV-2 mainly occurs in Africa but HIV-1 occurs throughout the world(Drotman 163). There are three stages of the infection. The first stage is acute retroviral syndrome and asymptomatic period. This is the flulike or mononucleosislike illness that most people get within 6-12 weeks after becoming infected. It usually goes away without treatment. From this point on the persons blood tests positively for HIV. The second stage is symptomatic HIV infection. This is when the infected persons symptoms show up. It can last anywhere from a few months to many years. The third and final stage is AIDS. This is when the immune system is severally damaged and the opportunistic diseases set in. The progressive breakdown of the immune system leads to death, usually within a few years. HIV causes a severe wasting syndrome. A general decline in the health and in some cases, death. The virus infects the brain and the nervous system. It may cause dementia, a condition of sensory, thinking, or memory disorder. Infection of the brain may cause movement or coordination problems (Drotman 164). HIV can be present in the body for two to twelve years without any outward sign of illness. It can be transmitted to another person even if no symptoms are present (Drotman 164). When HIV picks up speed, a variety of symptoms are possible. The symptoms include unexplained fever, fatigue, diarrhea, weight loss, enlarged lymph glands, loss of appetite, yeast infections of the mouth and vagina, night sweats lasting longer than several weeks, breathing difficulties, a dry cough, sore throat caused by swollen glands, chills, and shaking (Quackenbush 23). Pink or purple, flat or raised blotches or bumps occurring under the skin, inside the mouth, nose, eyelids or rectum are also symptoms. They resemble bruises, but dont disappear. They are usually harder than the skin around them. White spots or unusual blemishes in the mouth is another symptom (Quackenbush 24). There are two illnesses that commonly affect AIDS patients. One is a type of pneumonia called pneumocystis carinii. The other one is a type of cancer called kaposis sarcoma, which attacks the skin (What are HIV/AIDS 1). Pneumocystis carinii is a yeast infection in the esophagus. It causes severe pain when swallowing which results in weight loss and dehydration. It is the leading cause of death among AIDS patients. Kaposis sarcoma are tumors that look like bruises, but grow. These two diseases plus many other are called opportunistic diseases. For decades cases declined in the U.S. until the mid-1980s. Since the mid-80s cases are growing especially in HIV infected people. People with AIDS eventually contract atleast one of the opportunistic diseases. These are the diseases that AIDS patients usually die from (Drotman 164). HIV is transmitted three ways. One way is through unprotected vaginal, anal, or oral sex. The most risky is anal sex because the anus doesnt stretch. Therefore, it is easier for the skin to tear and bleed. This makes it easier for the infection to get into the bloodstream. It can get soaked up by the mucous membranes that line the vagina, rectum, hole in the tip of the penis, mouth, and the throat (Johnson 17). The second way is through direct contact with infected blood. There are a couple ways of getting it through direct contact with infected blood. One way is by sharing a hypodermic needle with someone who is infected. A tiny drop of infected blood stays inside the needle and syringe. So if a person uses it he or she is actually shooting the infected blood directly into his or her bloodstream. That little droplet of infected blood is enough to give you HIV. Sharing needles for skin-popping can spread HIV in the same way. This way a person is more likely to get infections such as abscesses. A person can also get HIV from sharing other drug works with someone who is infected. Containers or cookers such as spoons or bottle caps, crackpipes, cotton, or water for dissolving drugs or rinsing syringes are some of the works. It doesnt matter what a person is shooting in the needle-heroin, cocaine, speed, steroids, insulin, or any other drug. If a person shares a needle or works with someone who has HIV, he or she could get infected too(Johnson 20). Another way is through a blood transfusion. Chances of getting HIV through a blood transfusion in the U.S. are now very low, but still possible. Testing began in 1985, of all blood and plasma that is donated. The tests that doctors use are over 99% accurate. Blood is destroyed if signs of the virus show up in the donated blood. Therefore, it is almost impossible to get infected through a blood transfusion. Before 1985, some people became infected through infected blood and certain blood products. In the U.S. every piece of equipment used to draw blood is brand new. It is only used once and then it is destroyed. Therefore it is impossible for a donor to get HIV from giving plasma or blood(HIV/AIDS 2). The third way of getting HIV is an infected woman transmitting it to her fetus or baby. A pregnant woman with HIV can pass the virus to her child before or after birth. The way this happens is the fetus gets nourishment from its mother through the placenta and the umbilical cord. That is one of the ways. The other way is through breast feeding(Johnson 24). The only way to stem the spread of infection remains the public health approach, educating people on how to avoid infection or educating the infected people on how to avoid infecting someone else. There are many ways to prevent the transmission and spread of AIDS. A person has to be aware, because most people who are infected dont know they are(Nichols 3). One way to prevent infection is to not engage in the act of sexual intercourse with anyone who is or might be infected. If someone is going to , then he or she should atleast use a latex condom. It is medically proven that latex condoms can help to prevent HIV and other sexually transmitted diseases. HIV can not pass through the intact rubber film. It is almost impossible to catch the virus if the condom is used properly. This means using a good quality condom, one with the kite mark, with a spermicide. The condom itself can kill the virus(HIV/AIDS 2). Condoms dont completely eliminate the risk of being infected because they can tear, break, or slip off. Birth control pills and diaphragms will not protect a person or his or her partner from getting HIV either(HIV/AIDS 4). Drug users should seek professional help to stop doing drugs. They should never share hypodermic needles, syringes, or other injection equipment. Azidothymidine, commonly known as AZT, may reduce the risk of an infected woman transmitting it to her fetus or baby. Also, infected women should not breast feed their infants, since HIV can be present in the breast milk of an infected woman(Drotman 164). There are a number of things that a person can not get HIV from, that people are skeptical about. A person can not get AIDS from handshakes, hugs, coughs, sneezes, sweat, tears, mosquitoes, or other insects, pets, eating food prepared by someone else, or just being around an infected person. A person cant get it from sharing a cigarette, cigar, or pipe, drinking from the same fountain, or from someone spitting on him or her. A person also cant get it from using the same swimming pools, toilet seats, phones, computers, straws, spoons, or cups. Although the virus has been found in saliva, medical opinion states there is no evidence of contamination through wet kissing(What are HIV/AIDS 1). HIV is not spread through the air or water, unlike many other viruses(HIV/AIDS 2). No one has ever caught AIDS by going to a physician or an eye doctor who has treated AIDS patients. No one has ever caught AIDS by eating in a restaurant where AIDS patients have been, nor by sharing a dwelling in which AIDS victims live. No one has caught AIDS by working, studying, or playing with an AIDS patient, unless bodily fluids were exchanged. No one has ever gotten AIDS from an insect bite, even where there are many people with AIDS and even where there are many people with dozens of mosquito bites(AIDS, Understanding 2). HIV is very fragile. It doesnt live long or well outside the human body. It is easily killed with a 1:10 solution of bleach and water. It can be washed from skin with regular soaps. HIV will not survive outside the human body for more than a few hours at the most(Quackenbush 23). If a person thinks he or she might have HIV, he or she can get tested. HIV tests determine the presence of antibodies to the AIDS virus. Antibodies are proteins produced by certain white blood cells to react with specific viruses, bacteria, or foreign substances that go into the body. The presence of antibodies to HIV indicates infection with the virus. The tests that detect the presence of HIV-1 became widely available in 1985. The tests that detect HIV-2 became widely available in 1992. All infected patients should get blood tests done periodically. They should also have their health monitored by a physician(Drotman 164). There is no cure for HIV or AIDS, but treatments have been developed. The treatments help most people live longer. The infected people have to take medications to help them keep healthy and possibly postpone the development of AIDS(Johnson 33). Most of the medication has difficult side effects. Even with all of this, about 18 months after a person has been diagnosed with AIDS, he or she usually get quite sick and require hospital care(AIDS, Understanding 4). Scientists are not sure how, when, or where the AIDS virus originated. Researchers have shown that HIV-1 and HIV-2 are more closely related to simian immunodeficiency viruses than to each other. Simian immunodeficiency viruses infect monkeys. It has been suggested that HIV evolved from viruses that originally infected monkeys in Africa. It was somehow transmitted to people. There are many arguments to this theory. One is that HIV has only been found in human beings. It has never been isolated from any other animal species. Scientists believe The infection became widespread after significant social changes took place in Africa. Somewhere around the 1960s and the 1970s. HIV was isolated as being the cause of AIDS in 1983, and 1984. Tests were then developed to detect the virus. These tests have been used to analyze stored tissues from people who had undetermined deaths in the 60s and the 70s. Scientists found that some of these people died from AIDS. During the 1990s an estimated one million people in the U.S. had the HIV infection or AIDS. There are millions more throughout the world(Drotman 165). AIDS deaths has dropped significantly for the first time since the epidemic began in the early 1980s.They fell 13 percent in the first six months of 1996, to 22,000 people, down from 24,900 deaths in the same period a year earlier, reported by the Centers for Disease Control. The number of people diagnosed with AIDS still continues to grow, but the growth rate is slowing. From 1995 to 1996 the growth rate was less than 2%. The growth rate from 1993 to 1994 was 5%. First signs of drop in deaths of AIDS victims came in January 1997, when New York City reported a 30 percent drop in the number of Aids deaths in 1996. The Center for Disease Control credits better treatments, new drugs, and better access to treatment through state and federal programs. Some think that the decline is unfortunately only a standstill, because for some patients the new drugs are not effective(Meyer A1). Doctors and researchers have been doing research on the virus. They have studied several drugs that stop the growth of HIV in laboratories. One of the drugs is zidovudine, formerly called azidothymidine and commonly known as AZT. Research suggest that azidothymidine can delay the onset of opportunistic illnesses. This drug produces toxic side effects. Some other ones are didanosine(ddl), zalcitbine, which was formerly known as dideoxycytidine and commonly called ddc, and stavudine, which is commonly called D4T. These three drugs also produce dangerous side effects. Researchers are investigating treatments to help restore normal function to the immune system. They believe that any eventual cure must stop the growth of the virus, prevent opportunistic illnesses, and restore the immune system(Drotman 164). Some vaccines are being tested on animals and as of 1993, one is being tested on people who are at very high risk(Nichols 11). Magic Johnsons HIV is now undetectable, but not absent. Though he is not cured, powerful drugs have reduced the AIDS virus in his body to undetectable levels. Undetectable does not mean absent. Activists hope that his progress encourages people to get tested and take advantage of improved treatment. Thousands of HIV patients have had their infections recede to undetectable levels after taking drugs called protease inhibitor. Even though a person with undetectable virus levels can still infect other people. Even if the virus is undetectable in blood or semen, it can still be present in other areas such as intestines. Protease inhibitors reduce illnesses in infected people. These drugs are taken on a strict schedule along with two other AIDS drugs. It requires particular timing. Some drugs must be taken an hour before eating or two hours after. Even with this patients still get side effects. Some of the side effects are nausea, vomiting, headaches, backaches, and gastrointestinal problems. As many as forty percent of the people who take the concoction of drugs develop a resistance to them either because the virus becomes resistant after years of on other drugs, or because patients dont or are unable to take the drugs as ordered. These wonder drugs are expensive costing between $12,000 and $15,000 a year. Although these drugs are expensive it is still worth prolonging a persons life. The virus infects children and newborns, too. Newborns become quite ill by age 1, because their immune system has not fully developed. Most babies that are infected die by 18 months(Quackenbush 23). Today kids need to know about HIV and AIDS. They need to know how a person gets the virus, how it is spread, how they wont get it, what it is, how they can protect themselves from it, and whats going to happen to them if they get it. The real risk of infection for them is through sexual molestation by an infected adult. There are three main reasons why children need to know. One is natural curiosity. AIDS is now an undeniable part of the world. They are curious about the world. They have questions about the world. Another reason is the anxiety children may have about the disease. They understand that AIDS is a very serious disease. The thing they dont understand is the concept of not casually transmitted. The final reason is some children have family members or friends with HIV or AIDS. The kids that have an infected family member or friend face many personal challenges. They get harassed by their peers because their peers dont know what HIV or AIDS is. They think that t! he kid has cooties or something. Children need to know about HIV and AIDS so they can understand and so they dont harass other kids about it(Quackenbush 27). In the United States, federal, state, and local government have provided funds for education, treatment, and research of AIDS. Public health clinics have counseling and HIV-antibody testing to people who have symptoms or are at risk of infection(Drotman 164). Community organizations hope that greater awareness will lead to more compassion and more funding. One project is the AIDS quilt. It was begun in 1986 by an organization called the NAMES Project. This quilt consists of thousands of individually designed panels, which memorializes a person who died of AIDS. This quilt has been displayed in many cities throughout the world(Drotman 164). AIDS has killed many people. People need to be more aware and protect themselves so they dont become another statistic, because HIV and AIDS are serious, deadly, and they will be with us for a long time. There will not be a cure found anytime soon, but hopefully there will be a cure found.

Generating Unique Random Numbers Using Java

Generating Unique Random Numbers Using Java When you generate random numbers its often the case that each generated number number must be unique. A good example is picking lottery numbers. Each number picked randomly from a range (e.g., 1 to 40) must be unique, otherwise, the lottery draw would be invalid. Using a Collection The easiest way to pick unique random numbers is to put the range of numbers into a collection called an ArrayList. If youve not come across an ArrayList before, its a way of storing a set of elements that dont have a fixed number. The elements are objects that can be added to or removed from the list. For example, lets make the lottery number picker. It needs to pick unique numbers from a range of 1 to 40. First, put the numbers into an ArrayList using the add() method. It takes the object to be added as a parameter: import java.util.ArrayList;public class Lottery { public static void main(String[] args) { //define ArrayList to hold Integer objects ArrayList numbers new ArrayList(); for(int i 0; i 40; i) { numbers.add(i1); } System.out.println(numbers); }} Note that we are using the Integer wrapper class for the element type so that the ArrayList contains objects and not primitive data types. The output shows the range of numbers from 1 to 40 in order: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40] Using the Collections Class A utility class called Collections offers different actions that can be performed on a collection like an ArrayList (e.g., search the elements, find the maximum or minimum element, reverse the order of elements, and so on). One of the actions it can perform is to shuffle the elements. The shuffle will randomly move each element to a different position in the list. It does this by using a Random object. This means its a deterministic randomness, but it will do in most situations. To shuffle the ArrayList, add the Collections import to the top of the program and then use the Shuffle static method. It takes the ArrayList to be shuffled as a parameter: import java.util.Collections;import java.util.ArrayList;public class Lottery {public static void main(String[] args) {//define ArrayList to hold Integer objectsArrayList numbers new ArrayList();for(int i 0; i 40; i){numbers.add(i1);}Collections.shuffle(numbers);System.out.println(numbers);}} Now the output will show the elements in the ArrayList in a random order: [24, 30, 20, 15, 25, 1, 8, 7, 37, 16, 21, 2, 12, 22, 34, 33, 14, 38, 39, 18, 36, 28, 17, 4, 32, 13, 40, 35, 6, 5, 11, 31, 26, 27, 23, 29, 19, 10, 3, 9] Picking the Unique Numbers To pick the unique random numbers simply read the ArrayList elements one by one by using the get() method. It takes the position of the element in the ArrayList as a parameter. For example, if the lottery program needs to pick six numbers from the range of 1 to 40: import java.util.Collections;import java.util.ArrayList;public class Lottery {public static void main(String[] args) {//define ArrayList to hold Integer objectsArrayList numbers new ArrayList();for(int i 0; i 40; i){numbers.add(i1);}Collections.shuffle(numbers);System.out.print(This weeks lottery numbers are: );for(int j 0; j 6; j){System.out.print(numbers.get(j) );}}} The output being: This weeks lottery numbers are: 6 38 7 36 1 18

Short written assingment Assignment Example | Topics and Well Written Essays - 500 words

Short written assingment - Assignment Example Convened on November 20, 2013, the meeting was developed to touch on issues related to the use of intellectual property. The meeting took place between 11:30 am and 1:30 pm at the Offices of Greenberg Traurig, 4 Embarcadero Center, Suite 3000 in Francisco. The meeting was under the sponsorship of Greenberg Traurig. The main issue under discussion was â€Å"The latest in E-music issues.† The speaker during the meeting was the Intellectual property litigator, William Coats. He is an accomplished professional in matters related to trade secrets, copyrights, trademarks, and patents. He is quite conversant with dispute issues related to intellectual property especially relating to the movie, electronic as well as computer industries. Bill discussed a number of issues with the participants that gave them insight on various issues related to E-commerce. He focused more on the limitations and the provisions of intellectual property laws but never missed points related to the usability of e-commerce. Firstly, he talked about the utilization of advertising in the internet using the classical songs that were developed before 1972. Secondly, he talked about the legislations that were underway that could have an impact on e-commerce. Thirdly, he gave an insight on the use of small music clips without necessarily seeking for a license. Fourthly, he put into perspective the issue of using electronic signature when giving the rights to use the music, while considering the underlying the effects on e-commerce. Fifthly, he talked about the intellectual property rights that are likely to affect the use and sale of E-music. Finally, he talked about the fight against e-commerce by labels that have fought to have sale of music t hrough the internet disallowed. The meeting was geared towards sensitizing the committee on the possibilities and limitations of e-commerce as it relates to music. Intellectual priority was given the top priority while the laws that govern trade and

Elementary Teachers Essay Example | Topics and Well Written Essays - 3750 words

Elementary Teachers - Essay Example attempt, they display exceptional expertise in bolstering barely glowing literacy embers. Their professional expertise enables them to engage highly effective, personalized conferences that frequently provide students with the extra time to ask questions or received targeted instruction they need to fill their specific literacy gaps. Compared to exceptionally gifted peers that teach in pre-schools, kindergarten, and first grades, highly effective second grade teachers have patience and gifts in helping students find answers to their own questions, with their support". (Block, et al,) "Highly effective third grade teachers are exceptional managers. They have particular expertise at working with a wide variety of ability levels, groups, and materials at a variety of readability levels simultaneously. They place high value in and enjoy using strategies that motivate students into literacy by effectively introducing broader ranges of readability levels, content topics, and genre that was possible in preschool through grade 2 classrooms. They believe that the key to literacy success for many third graders is to introduce many new genre so that students fall in love with a specific book. This in turn could lead them to desire because they want to read more complex books about that newly discovered area of interest. Among their teaching talents are managing the range of literacy competencies necessary to learn to read and read to learn. They distinguish themselves in their ability to bring books with few pictures to life, develop vivid backgrounds rapidly, and stimulate students to explore and question specific context topics. When students do not learn a concept on an initial attempt, they are particularly... The study occurred in four phases. In Phase I, six hundred forty-seven language arts supervisors from seven English-speaking countries engaged in a Delphi analysis, involving point-by-point analyses of highly effective instruction in action from preschool to grade 5. In Phase II, 1,294 characteristics of teaching expertise identified in Phase I were dimensionalized into 475 categorizes of teaching expertise and inter-rater reliabilities were computed. In Phase III, eleven prominent researchers from the USA, Canada, and Australia cross-validated data. In Phase IV, the Blocks wrote summaries of most distinctive qualities per grade level, compared qualities across grade levels, and analyzed commonalities and differences between qualities identified by supervisors versus researchers. Forty-six indices of teaching expertise distinguished highly effective preschool to grade 5 literacy teachers from one another. Applications of these data for research, policy, and practice were described. The purpose of this study was to create a descriptive database of preschool to grade 5 teaching expertise.