Unmanned Aerial Vehicles Essay Example for Free

Unmanned Aerial Vehicles Essay Border security continues to become a core policy development priority for the United States because this cuts across various issues faced by the country including illegal immigration, drug trafficking, human trafficking, smuggling, and terrorism. Congressional debates center on two issues, the focus of border security efforts in relation to budget allocation and means of improving border security (Sullivan, 2009) as a preventive measure instead of a reactive process as in the aftermath of September 11, 2001. Border security involves the patrol of the 6,000 miles of land border with Mexico and Canada and 2,000 miles of coastal waters of Florida and Puerto Rico. The task of border patrol is to identify and assess potential threats and respond effectively. However, even with a large workforce of 30,000, border security has jurisdiction over a large and widespread area encompassing land, sea and air space. (Customs Border Protection, 2009) Patrolling a large area and simultaneously handling the issues of illegal immigration, drug trafficking, smuggling, and terrorist threats makes border security a daunting task because of the limitations in the vantage point of land and sea mobile personnel. This led to efforts to adopt unmanned aerial vehicles (UAVs) as an integral technology for border patrol. Unmanned aerial vehicles refer to aircrafts without a pilot on board and controlled from the ground. These are fitted with sensors that transmit data to orbiting satellites that in turn bounce data to receivers on the ground. The transmission of data takes seconds to happen so that the receipt of data is almost instantaneous. UAVs can fly long distances at high altitudes or short distances at lower altitudes depending on the purpose of use. High altitude flights can provide information on large targets such as trucks while low altitude flights provide better information on smaller targets such as humans. (Valavanis, 2007, p. 533) As a border patrol technology, UAVs fill the limitations of the land and sea vantage points. History and Uses of Unmanned Aerial Vehicles Unmanned aerial vehicles have existed for more than a century and continued to evolve with the development of technologies to improve flight control and dynamics as well as imaging and data acquisition and transmission. UAVs developed as a military initiative and it was only in the past few decades that UAV found non-military or civil use. With its roots in the military, the Department of National Defense defined UAVs as â€Å"a powered aerial vehicle that does not carry a human operator, uses aerodynamic forces to provide vehicle lift, can fly autonomously or be piloted remotely, can be expendable or recoverable, and can carry a lethal or non-lethal payload† (Valavanis, 2007, p. 533). The definition clarifies the capabilities of UAVs, its possible purposes, and the innovative developments that accumulated over the decades. The idea of unmanned aerial vehicles existed as early as the First World War. The idea targeted improvements in the discharge or delivery of guided missiles. However, existing technology was unable to facilitate the development of the flight control system needed to have a functioning unmanned aircraft delivering missiles to the enemy’s territory. The gyroscopic devices developed by Elmer Sperry in 1909 became the predecessor of inertia navigation system applied in modern UAVs. At the same time, the Western Electric Company also developed radio control technology for the remote piloting of aircraft. Radio control together with inertia navigation system paved the way for the development of UAVs. These technologies were adopted by the military in developing a cruising missile but efforts met problems. UAVs were used instead as target drones for anti-aircraft practice and actual warfare countermeasures. This was the first use of UAVs. However, the navy continued research into flight control and navigation initiatives that included the fitting of RCA cameras and radar guidance system to improve control and make drones capable of delivering missiles. Developments led to the use of UAVs as target drones in World War II. (Zaloga Palmer, 2008, pp. 4-9) After the Second World War, the UAVs further evolved into tools in espionage during the Cold War. While control and guidance of the drones continued as an area of innovation, greater focus was given to the image capture capability of UAVs for surveillance. During the 1950s, surveillance UAVs were fitted with daylight and infrared cameras, rocket-assisted takeoff, radar tracking, and radio control. The shooting down of a manned aircraft resulting to the capture of pilots renewed development efforts in the 1970s. Drones became decoys until the Russian radar technology developed to make decoys ineffective. Efforts focused on developing drones with reduced radar signature, increased range, and improved flight control. The new drones were christened as lighting bugs and used in the Vietnam War. (Zaloga Palmer, 2008, pp. 10-12) After the Cold War, technology innovation on UAVs continued in support for combat operations. The 1980s witnessed key developments including improved satellite communications, compact or miniature technology, and state of the art sensors. Improved data and imagery and better navigation control led to the use of UAVs for â€Å"intelligence, surveillance and reconnaissance (ISR) and for time critical targeting† (p. 1). The development in UAVs split into technology for small and large UAVs. The size was a consideration because of differences in navigation control and capabilities. In large UAVs, the flight and retrieval control is separable from its data and imaging functions so that it can transmit information via satellite links while on flight while in small UAVs retrieval of the aircraft is necessary before obtaining information. (Drew et al. , 2005, p. 1) Now, the uses of UAVs are increasing. Traffic control is one use of UAVs because its aerial view provides accurate information on traffic conditions over a particular area. Search and rescue operations also benefit from UAVs providing an initial view of the situation in conditions unsafe for manned aircraft. (Borchardt, 2004, p. 28) Recently, small UAVs were used to gather data and assess the damage caused by Hurricane Wilma in areas inaccessible due to flooding and blocked roads (Murphy et al. , 2008, p. 164). NASA also developed sensor technology for the monitoring of pollution and measurement of ozone levels using UAVs. The Massachusetts Institute of Technology integrated global positioning technology and video camera control in UAVs for sensing toxic substances and contaminated areas. The Department of Energy also announced the development of radiation sensor for UAVs for use in detecting nuclear accidents. (Bolkcom Nunez-Neto, 2008, p. 2) Different data processing, imaging and other features evolve depending on the purpose intended for UAVs.

Bill Gates :: essays research papers

Bill Gates   Ã‚  Ã‚  Ã‚  Ã‚  What does it take to be the richest man? It is obvious that you don’t need to be extremely attractive or even good looking at all. You only have to have a great idea, you have to be an obsessive workaholic, and you have to be willing to beat and crush all of your competitors. Also being a genius, and being in the right place at the right time may help too. Someone that has seemed to accomplish all of these is now the Chief Executive Officer of the Microsoft Corporation and goes by the name of Bill Gates. He currently worth more than 100 billion dollars and is the most wealthy man in the world. There are many people who admire and respect him, and then there are many that hate and despise him. Either way he has managed to develop and successfully operate one of the worlds largest software manufacturers, Microsoft. Microsoft is so successful, and has such control over the computer industry that the U.S. government is filing a lawsuit accusing claiming a monopo ly. How did Bill get himself into this and where he is now? Is it possible he has made too much money and has too much power? You can decide after reading this.   Ã‚  Ã‚  Ã‚  Ã‚  William Henry Gates III was born on October 28, 1955 in the Seattle suburbs of Washington. He grew up with his two sisters in a family of descent wealth, his father William Gates Jr. a Seattle attorney, and his mother Mary Gates, a school teacher, University of Washington regent and chairwomen of The United Way International. Gates attended public elementary school in Seattle before moving on to the private Lakeside school in North Seattle. There he began cutting classes to hang out at all hours at his schools computer center. He liked computers and learned so much that he began programming them at age 13. Throughout his early teens he and his friend Paul Allen were writing computer programs working on ways to start a business. At 16 they sold a computer-runned system to monitor highway traffic, and made around 20,000 dollars off it, but business ended when the customers found out the young entrepreneurs were still attending high school. After successfully graduat ing high school, Gates wasn’t quiet sure what to do next. He decided to attend Harvard with no specific career goal in mind. While going to Harvard he was your average smart college student with a special interest in the Popular Electronic magazine.

Nutrition and Fitness Paper

First step to a healthier new me would be to change my current fitness habit, which is not much other than teaching dance and walking to adding more activity to my week without losing sleep. After looking at what my current fitness routine is teaching two and half hours of dance a week and walking a week for two and half hours I noticed I needed to add more activity to my week. Within that first step is to set a goal of how much time is needed to be achieved a week and how much time is available to achieve that goal. Know at least thirty minutes every day is a healthy goal of activity.So adding at least one hour a week of an activity Is what I need to do. So adding WI Dance Routine twice a week for one hour will help out and give me an extra amount to achieve the goal and go above and beyond the goal. Second step is to improve the area of nutrition, I eat the three meals a day and I even snack a bit for the extra energy kick needed for the day. But nutritional habits are a lot like f itness habits, it focuses on eating right and exercising right. Habits are created to improve or even decrease who we are.So creating a healthy habit is essential to achieve the goal set in front of us. Poor nutrition can lead to obesity which can lead to medical problems in years to come. A normal family's lifestyle can result to unhealthy eating habits with stops at fast food chains. Families need that cooking time together to eat In a healthier way and create positive habits among the parents and the children. I know my eating habits still to this day are affected by my eating habits as a child. My mother worked day and night and my dad also worked long days and sometime nights.So dinner was to a none cooked meal, sometimes It was McDonald's or pizza. So now Tanat I work more than the average forty hour work week, I sometimes slip and eat that fast food because it is there and easy. Knowing that I know I need to make the changes to change my bad habits. Fitting healthy habits int o a hectic life is not easy but following a few steps to get more nutrition and fitness in a hectic life is necessary for any person who wants to make their fifth birthday. Here are a few things that can be put into play right now that can make healthy habits an easy part of the day to day routine.Areas that I have started to make improvements in my own health is in red and highlighted to show how little steps can make big steps later in life. Guarani Ph. D (n. D. ) 1. Drink water throughout the day (doing my best currently) 2. Cut back on the amount of soda and coffee drank in the day (already made some cut backs) 3. Replace high sugar foods with low sugar versions 4. Stock up on healthy, portable snacks (eating better snacks during my day) 5. Take the time to plan healthy meals for the week 6. Purchase frozen, ready to cook ingredients 7. Pack your lunch the night before 8.Cook double batches of what your cooking 9. Give yourself some slack 10. Fit in exercise as much as you can ( trying to add more fitness in during a busy work week) 11. Take a walk break during the day (getting up at work and Just walking around the office to stretch) 12. Whenever possible, walk (parking further in parking lots when I can to increase walking) 13. Get enough sleep (trying for more than six hours, tough but trying) Now going through this list I see many areas I can do to improve my health and I also see those ways can help improve my fitness levels and my stress level at the same time too.By adding some or all of these new healthy habits into my lifestyle today, it can improve the way I feel in no time at all. Making small steps for me can help promote a new look on my weight management and by doing that it will give me more energy during the day to increase my fitness plan for adding more fitness to my week. Those new habits would help diminish the old habits that have been taught or created over the years by my parent's poor habits. My mother and her mother were not small p eople and I don't want that type of life. They were not obese people but they were not healthy either, obesity is not Just being overweight.Obesity can lead to medical problems beyond weight. Obesity can lead to heart conditions, leg problems, back problems, and even mental problems. This is onto life I want and I want to make the changes now before it changes me. While reading the New York Times today, I came across this article that the government tells people how to eat better is to eat less. â€Å"The latest nutrition guidelines released Monday by the federal government reiterates of the advice from previous years: eat less salt and saturated fats, eat more fruits and vegetables and hole grains† (Martin, 2011, Para. ). With this information they tell us by eating the Dad we wall never lose ten welling Just Keep It on, unless you cut Deck Ana eat some more of the better. At the end of the article the writer states it simple â€Å"Cut back on the cheese, hamburgers, pizza, cookies and pastries† (Martin, 2011, Para. 23). So Just cutting back can change your life. Conclusion Like kids, adults need to make the right food choices to be healthy and must exercise to be healthy. Even in a busy lifestyle they need to make the correct choices f they, plan to live pas the age of fifty years old.My family created poor habits for myself and my brother and both of us noticed the problem and knew it had to change now rather than later. More adults are battling obesity today more than ever and that is because of the busy lifestyle we all lead. By making the changes now as young adults or adults in their mid thirties they can learn how to eat properly and exercise, better to make it to fifty years old healthier than they could of before the changes. Adults must exercise as much as they can, even with a busy lifestyle.

Essay Analysing Crowd Control - 3795 Words

Are inadequate crowd control measures a significant problem for major events? Abstract Crowd management is known to be one of the most essential aspects within any major event. From pre planning stages to execution, crowd control techniques lay a foundation for a controlled, safe and well-regulated environment. Due to poorly established risk assessments and crowd administration, many large-scale events in the past have ended in terrible tragedy. The purpose of this paper is to investigate the trends of crowd management that are compromising the safety of all event attendees and determine how these trends can be rectified for future concerts and festivals. This will be achieved by exploring what crowd control entails and identifying the†¦show more content†¦It focuses on the concern of the pre event planning that was not adequate enough in controlling the masses of people entering the event through a small tunnel and ultimately ended in fatality. The article further explores mathematical examples of probability and utility of risk management; it is however, the theoretical research that has resulted from these equations that will be relevant for this journal article study. The study also demonstrates the key challenges of contemporary risk management with respect to the love parade tragedy; this will be the most beneficial material for the author’s journal article. The writer believes that the three key sources will lay a credible foundation for the remainder of the research for the journal article on crowd management issues. The sources are reliable, in depth and show different perspectives regarding the concerns about safety and adequate control of crowds in major events. The analysis of risk management has proven to be a helpful tool in assessing where certain measures have gone wrong that lead to tragic circumstances. Although the three sources provide and extensive insight into the topic, further research is required to better analyse crowd control procedures. **************************** Large-scale events are part of a flourishing industry and continue to grow both nationwide and worldwide. The increasing number and popularity of free andShow MoreRelatedLady Lazarus , Sylvia Plaths Confessional Poetry1438 Words   |  6 Pagescolloquial, conversational language. The plain, simple style is given greater power, when keywords and phrases are obsessively repeated. Eileen. M. 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