Technology
On 15 October 2003 China launched from the Gobi Deser, China a manned rocket intended for earth orbit. The astronaut an Air Force Lt. Col. Yang Liwei shot across the Axure Nrothwest China sky in the spacecraft named the Shenzhou V translatin "divined vessel" at exactly 9 a.m. and reached the earth's orbit 10 minutes later, they began circling he planet every 90 minutes, and completed 14 orbits which toke approximately 21 hours before executing reentry according to the offical Zinhua News Agency. Through their efforts, Chins has become the third country to launch a manned space ship into the Earth orbit, followed by Russia (former Soviet Union) and the United States of America. Chinese President Hu Jintao, who watched the launch, called it "the glory of our great motherland." (FoxNews, par 3) Dean Cheng Research Analyst with Project Asia at the CNA Corporation in Washington, D.C. states "China is pursuing everthing from micro and mini-satellites, along with the way up through a manned space program. It has been four decades since Russia sent their astronaut Yuri Gagarin into orbit in April 1969, and the United States launched Alan B. Shepard, Jr. less than a month later while John Glenn became the first American to orbit in 1962. While China's space research started in the mid - 1950. In 1967, it established the China Space Technology Institute, and three years later, China successfully launched its first man-made satellite. After 100 odd years of efforts, China became the fifth county in the world to launch a satellite with self-developed carrie rockets, and to master the technology of satellite recovery....
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added: 10/01/2011
When designing you will need to choose appropriate materials to make your design from. There are many different types of materials but some are more suitable than others for a variety of reasons. Here is a selection of those reasons. STRONG - The material will resist - Tension forces -Compression forces -Torsion forces -Shear Forces TOUGH - The material can withstand shock (eg Hammer Blows) BRITTLE - The material will break easily if subject to slight shock or force HARD - The material is long lasting by being resistant to wear, weather, heat etc. WEIGHT - Light - Heavy EASY TO WORK WITH - Cutting - Drilling - Smoothing - Fixing/assembling/gluing - Finishing, (eg Paint, Varnish etc) SAFETY - Non - Toxic - non - Flammable - Not Sharp etc. COST - Cheap - Dear TIME ATTRACTIVE - Colour - Pattern - Texture By considering these factors the advantages that certain materials present can be compared and these can also be considered against the disadvantages. Materials Available For Your Project Wood SOFTWOOD - Redwood (Scots Pine) HARDWOOD - Beech - Elm - Oak (European) - Sycamore - Mahogany MANUFACTURED - Plywood - Hardboard - Blockboard - Chipboard - M.D.F METAL FERROUS - Mild Steel NON - FERROUS - Copper - Brass - Aluminium - TinPlate PLASTIC - ACRYLIC - POLYSTYRENE When designing you will need to choose appropriate materials to make your design from. There are many different types of materials but some are more suitable than others for a variety of reasons. Here is a selection of those reasons. STRONG - The material will resist - Tension forces -Compression forces -Torsion forces -Shear Forces TOUGH - The material can withstand shock (eg Hammer Blows) BRITTLE - The material will break easily if subject to slight shock or force HARD - The material is long lasting by being resistant to wear, weather, heat etc. WEIGHT - Light - Heavy EASY TO WORK WITH - Cutting - Drilling - Smoothing - Fixing/assembling/gluing - Finishing, (eg Paint, Varnish etc) SAFETY - Non - Toxic - non - Flammable - Not Sharp etc. COST - Cheap - Dear TIME ATTRACTIVE - Colour - Pattern - Texture By considering these factors the advantages that certain materials present can...
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added: 12/25/2011
Client/Server technology is very common amongst most infrastructures. Most of you are already familiar or have at least used this technology. This technology consists of at least a client and a server; the two must also have a way of communicating with each other. The client can either host the application and do the processing locally or serve as an interface to an application running from a server, the server either hosts the application and does the processing locally or act as a file store. Either way both are required for the Client/Server technology. In the environment that I work in, one example of this technology is our Finance system. An application is installed on the local computer while the data lay on the server. When data is centrally managed ensuring that everyone's information is consistent. When the client serves as an interface to an application located on and processed by a server, the client is called a thin-client. A thin-client does not have a local hard drive, the only memory it has is RAM. The benefit of this configuration is that the thin-client is much cheaper than a regular personal computer. Deployment is much easier due to the fact that there is no operating system to configure and no software to install, all of this is served up by the server. Since the application is only on the server, updating the application is also a less timely process since you only have one system to worry about. If there is a bug in an application or corruption occurs, the troubleshooting process is simplified since the application is only on the server. Obviously there is a down-side to this configuration, what if the server fails completely? Single point of failure is the issue here, but of course there are solutions and one...
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added: 01/27/2012
Nature has always inspired scientists since time immemorial let it be machines that left the ground and took to the skies a century or so ago or small robots that mimic insect behavior. This is mainly because nature has improved on its design over millions of years and has reached a level of perfection that any humanly devised machine or plan could only dream about. Take for example the research done on social insects in the last fifty years that has shown the reasons behind an ant choosing the shortest path between its colony and the food source. Another example for such intelligence is in the case of termites building huge termite mounds with hardly any communication. The termite seems to follow a set of simple rules like, they, at first, search at random for a elevated spot, then drop some chewed dirt and keep dropping dirt on the any spot with any saliva on it. The termite does not need global knowledge or any more memory than is necessary to complete the sub-task in hand, it just needs to invoke a simple behavior dependent on the state of its immediate environment. Such a kind of Multi-agent distributed artificial intelligence is called collective intelligence or swarm intelligence or emergent behavior. Instead of applying complex algorithms to static datasets, through studying social insects we can see that simple algorithms can often do just as well when allowed to make systematic changes to the data in question. Other lessons that may help us make better algorithms as engineers is the idea of self organization. A self organizing (SO) system is any dynamic system from which order emerges entirely as a result of the properties of individual elements in the system, and not from external pressures. For example, a trail of ants exploiting a food source,...
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added: 11/21/2011
One way in which the world has changed in the last 20 years is the global issue of the worldwide communication revolution, which allows instantaneous communication across the globe, especially via the Internet. Telephones, mobile phones, Internet service providers and computers have developed allowing a new era of sophisticated technology and participating efficiently in the globalization process of the world. In fact, these reliable network connections particularly via the internet have contributed to a reform in the worldwide information system. For instance, internet service providers and telephones have contributed efficiently to this important access to the net. The internet connection has changed the global communication allowing immediate communication across the globe like chatting, managing our schedule, mailing which the best way to send and receive documents across the world in a few seconds. In the United States, 4 persons over 5 approximately gain access to the web and more than 60% of Americans own mobile phones and telephones. Furthermore, this communication innovation has developed powerfully by the immense utility of the internet and the cell phones. These technological inventions have modified and modernized several things. For example, online and mobile banking, international transactions, worldwide monetary system have contributed to the globalization procedure. We can consider this prodigious progress by taking the example of a board riding company of technology, Oracle. This corporation is doing in the order of 1,300 online transactions per hour every day; hence the value of the communication in the world development. Besides, the enormous progress in the computer and the telecommunications field has played a part in easing people life. Mobile phones became a requirement, internet a need for numerous branch of learning. These materials facilitated roughly the human beings life and comfort. We can today, from our home, be connected to the world, send and receive immediate message or...
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added: 01/16/2012
compare and contrast crucible and to my dear and loving husband.
In our society many women tend to have different views and feelings upon their husbands. In the play "The Crucible", Elizabeth Proctor showed her care and love for her husband although she carried suspicion at the beginning. In the poem, "To My Dear and Loving Husband" by Anne Bradstreet, she uses different kinds of words to express her eternal love she had toward her husband.
Elizabeth proves to be a wife that respects and loves her husband. The arguments presented between the husband and wife seems intensive, but this was a mean to show how much Elizabeth loved her husband. Arthur Miller uses the characterization of Elizabeth shown in Act II to illustrate how she cared for her husband. Even though her questioning seems to bring up arguments, John Proctor also has his own faults; adultery. Her suspicion toward her husband was created to symbolize how she intended to snatch John Proctor back to her side. Although she realize that her husband already has an affair with Abigail, she insisted to forgive him and tries to get his husband's heart back to her. At the end of the act during her seizure, Elizabeth says "I will fear nothing." During this moment it can be seen that Elizabeth is innocently accused by Abigail. Even though she was feared, she relieves her husband telling him that she will not fear anything. It was to keep her husband temper and anger from raging. We can all see how loving Elizabeth is to her husband.
In the poem Anne Bradstreet uses different ways into transporting the idea of everlasting love she had with her husband. This poem not only reviews her love, but it also praise her husband. The idea of everlasting love until and beyond...
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added: 10/15/2011
Throughout many generations, love and lust has become a part of society that people cannot differentiate between the two feelings. To some, love is a passionate and exciting kind of feeling that only few share and to others, lust is the feeling that most everyone comes to feel though it is In todays society it seems that people are becoming more and more in tune with the technological advances all around them. It seems as though fewer people are reading the newspaper, much less watching the news on television. People are looking to other sources for their news on simple things suc We require that you submit one of your own papers. This helps getfreeessays.com grow and add new papers! ***All data submited becomes the property of getfreeessays.com and you give up all legal rights to it! We only accept original papers, do not submit copyrighted material!*** So you want access to our archive of free essays and term papers? All you need to do is register and verify your email address! Well, what are you waiting for? Acceptance Essays ( 51 ) Arts ( 1085 ) English ( 340 ) Foreign ( 73 ) History ( 150 ) Miscellaneous ( 242 ) Movies ( 128 ) Music ( 157 ) Novels ( 275 ) People ( 182 ) Politics ( 333 ) Religion ( 317 ) Science ( 183 ) Speeches ( 83 ) Sports ( 143 ) Technology ( 350 ) All fields in red are required! Baldwin and Douglass both used education as a guide to understanding their oppressive disposition in society. In the, "Narrative of the life of Frederick Douglass, an American Slave", Douglass overcomes many barriers to learn how to read and write. In, "The Discovery of what One day after striking gold in Alaska, a lonesome miner came down from the mountains and walked into a saloon in the nearest town. "I'm lookin' for the meanest, toughest, roughest hooker in the...
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added: 12/13/2011
Windows CE is one of many Microsoft Windows operating systems. Although Microsoft does not explain the "CE," it is reported to have originally stood for "Consumer Electronics," also "Compact Edition." Occasionally one will hear the term "Pocket PC" used instead of Win CE. Some even think that these two names refer to two different operating systems. In fact, Pocket PC is the name for a mobile device class using a customized version of Microsoft Windows CE as its underlying operating system. Operation is similar, and both use the same synchronization software, so they can be supported with the same technical resources and staff training. Someone who wanted the smaller size and functionality of a palm-sized device can do so with a Pocket PC. Fundamentally, Win CE is an embedded 32-bit multitasking, multithreading operating system designed for mobile, and other space-constrained devices. It works on 12 different processor architectures and on over 180 different CPUs and is used in a broad range of devices including a variety of industrial and consumer products, such as cameras, telephones, set-top boxes, Internet-access devices, just to mention a few. Win CE is also offered as the operating system for the Auto PC, Microsoft's concept of controlling applications (such as selecting radio channels) while driving, using interactive speech technology. Windows XP In the latter half of 2001, Microsoft introduced its newest operating system, Windows XP. The "XP" is for experience, which is what MS was seeking to provide. Microsoft wanted to provide a new, improved, greater, and more pleasurable experience for the computer user. Windows XP is specifically for the Personal Computer user, and has two versions, Home for the single computer user, and Professional for the business, or multiple computer users. Professional is more suited to the college student also, because it readily will access Windows 2000 that...
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added: 09/22/2011
Introduction The word e-business is used quite frequently today but what exactly is e-business? According to Wikipedia.com, electronic business refers to any information system or applications that empower business processes. This is accomplished most often with web technologies. E-business can include internal business systems such as, customer relationship management and employee information portals; enterprise communication and collaboration such as e-mail; and electronic commerce such as online transaction processing. E-business can also have different kinds of users. Examples include all users of the Internet, only employees on the intranet, or a specified group of users of an extranet. Abilities of E-Business The Internet has created both opportunities and threats that all companies will need to confront to remain viable businesses in the new economy. According to Joslyn, "changes in consumer attitudes have been fueled by the increasing access and availability of information, as a result of the Internet". In healthcare, informed consumers are both better enabled and are demanding to be more involved with decision making that involves their health or that of a loved ones (Joslyn, 2001). To respond to consumer needs, healthcare providers must overcome uncertainty and recognize the disadvantages of maintaining the status quo. According to a study by Andersen, e-business could help eliminate the two to seven percent providers overpay medical and surgical suppliers, increase the number of transactions completed using e-commerce, reduce manual processing and rework, and the real-time visibility of transactions will reduce response time. In the healthcare industry most of the e-business uses by providers have been aimed at replacing administrative functions previously performed by telephone or postal mail. Examples of this are, answering patient questions, performing follow up to previous office visits, providing test results, scheduling appointments, and requesting prescription refills. Group Health Cooperative HMO based in Madison, Wisconsin launched a progressive e-business application in October of 2003 called...
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added: 12/19/2011
Computer Aided Machining (CAM) http://www.mastercam.com http://www.mastercam.com What is it? CAM, (Computer-Aided Manufacturing). To use computers to manufacture a product. With CAM, a product such as a mold for pair of sunglasses is designed with a CAD (Computer Aided Design) program and machined using a CAM program. Machines that use CAM programming systems are called C.N.C. machines (Computer Numerical Control). Who is affected? With the introduction of new technologies, machinists are rapidly changing their skills and are required to master new forms of knowledge and new operational skills. CNC involves the introduction into machining of multipurpose machines by electronic commands executed through a computer program. C.N.C. programming includes a broad range of techniques used in manufacturing. Skills that are needed are knowledge of manufacturing processes, metallurgy, math, and drafting. Such a background can provide a base from which students may pursue a degree in manufacturing engineering technology or mechanical engineering. The main types of machine tools that utilize CAM programming systems are: Machining Centers (both horizontal & vertical), Lathes, Boring Machines, Wire EDM (Electric Discharge Machine), Laser machines, Water jet, and Routers. Figure #1 Figure #2 Figure #3 Figure #4 Screen shots from http://www.mastercam.com Figure 1- shows the finish product, a pair of sunglasses. Figure 2- shows one side of the mold being produced on the computer screen. Figure 3- shows figure 2 actually machined Figure 4- shows the other side of the mold while it is being cut on a C.N.C. machine. The following is a breakdown of programming a basic part using a CAM programming system. (Geoshape) This button allows you to select the geometry you draw in CAD and have CAM turn that geometry into usable construction lines so that tool paths can be generated. (Start Pont Edit) This button allows you to select the lead-in and lead-out points for the router bit to use on your part. (Tools) This button allows you...
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added: 12/27/2011
Since World War II (WWII), the funding of scientific research by the Department of Defense (DoD) in America has remained the first priority of federal research funds. During WWII, the DoD created agencies and linkages that provided billions of dollars to universities and corporations to research and design the weapons that would win the war and wage future wars. Among these weapons were most notably the atomic bomb, the proximity fuse, missile technology and radar. Breakthroughs in electronics during the war led to the modification of anti-aircraft guns. Analogue computers were used to calculate the firing times and trajectories necessary to hit high-speed targets like fighter-bomber aircraft and the German V-1 rocket. Computers were used to calculate artillery tables that solved complicated engineering problems, decoded enemy communications, and opened up the future of technological war. [1] In military spending nowadays there has been a great need for a cost-effective mean of maintaining troop readiness [2]. Soldiers are required to spend significant time training in extremely complicated and expensive military vehicles. Live training inside battle tanks, aircraft and ships can be prohibitively expensive and not to mention dangerous. Computer simulation can provide much of the same benefits as live training without the associated cost. The primary goal of military simulation is to provide high fidelity representation of a real battlefield. With the advantages of distributed simulation, thousands of military vehicles can be represented in the same simulation. Current technology has allowed live and virtual forces to be seamlessly integrated into a single battlefield. For example, a live platoon leader and his crew can drive an actual tank on a training range at Fort Knox while leading a group of virtual tanks being run on a simulator elsewhere. The live and virtual tank operators are able to see and shoot each other. It appears...
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added: 11/25/2011
Computer animation is done for various reasons. It is used to manipulate existing films, cartoons or other graphics, to the creation of three-dimensional (3-D) worlds in the computer. In the last few years, computer animators have created special effects in movies, such as talking toys and a doomed ship and its passengers. Much like traditional animators, computer animators manipulate graphics to create the illusion of movement, but unlike traditional animators, they use computers. A typical computer animation project goes through several stages. First, an animator works both alone and with colleagues to brainstorm new ideas. Next, he or she produces storyboards, which visually outline how proposed ideas can be developed. Once an idea is selected, a computer animator creates the graphics that will appear in the animated segment. Finally, the graphics are animated. A lot of computer animation is done for the entertainment industry. The movie "Jurassic Park" used computer animation to create very realistic dinosaurs, and most of the extras on board "Titanic" were computer animated, as was the ship. Computer animators often simulate scientific ideas or processes that could never be clearly shown in reality. Architectural firms employ computer animation to create realistic, 3-D models of structures that allow the potential buyer to take a virtual tour of a building. The incomes of computer animators can range from approximately $10,000 to $60,000 a year, depending on how much experience an animator has. For example, an experienced computer animator makes between $30,000 and $50,000 a year. Animators who take on upper-level, managerial positions can make up to $70,000 a year. Computer animators work for various people, such as film and video production companies, independent filmmakers, television stations, computer game developers/producers and advertising companies. Some animators work full-time, but for the most, work on a contract basis. Each contract is negotiated separately,...
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added: 01/13/2012
Reason for design Data transfer over cable is a very important aspect of today's communication devices. Most cables used for data transfer in 1997 were used only for television purposes, and the direction of data flow was downstream, or from the head-end to the station. If this setup could be altered, then cables could also be used to receive data from stations, or upstream flow. In order for data to be transferable (able to go upstream as well as downstream), the cable must be upgraded to a combination of optical fiber and coaxial cable, or simply a hybrid fiber coax (HFC). In this concept lies the ability for high-speed digital data transfer between the head-end and the stations. The authors of this paper explore their idea for a media access protocol that can efficiently accomplish this task – high-speed digital data transfer over a cable. How it works The concept to do this is simple, and involves two key players. One is the Head-End (HE). The HE can be thought of as the computer under the administrator's control. It is the main coordinator, distributor, and basically the "boss" of the whole system. The other key player in this system is the Station. There can be one or more of these (usually more than one), and they are pretty much individual systems connected to the HE. They can be thought of as individual computers attached to the internet (which in turn is basically controlled by the HE), or as any other devices that have the purpose of sending and receiving data. These stations are dependent on the HE, and the HE itself is independent of the stations. The authors of this paper devised an efficient protocol they called a medium access control (MAC) protocol to accomplish their goals. The concept to understand the most...
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added: 12/31/2011
Aerodynamics Aerodynamics is the branch of dynamics that deals with the motion of air and other gaseous fluids and with the forces acting on bodies in motion relative to such fluids. The Latin word for aero means air, and the Latin word for dynamics means power. Steady aerodynamics this term is used to describe situations where there is no rapid change in properties over time. For example, an aircraft cruising straight and level in the upper atmosphere, well above where any gust can reach it. When such situations are being analyzed, a lot of effort can be saved by neglecting terms in the equations, which describe rates of change of the flow properties or forces at any point on the aircraft. Time-accurate strong-interaction models for the coupling of a boundary-layer method with a method for three-dimensional, unsteady, compressible potential flow about elastically deforming wings are developed. The investigation of the flow behind on oscillating airfoil has shown that two waves of convected vortices can be distinguished: One wave convected at, roughly, the outside uniform velocity; and an inner wave in the core of the wake originating at the trailing edge which is convected at a much lower speed. At a certain distance behind the airfoil there is a partially destructive interference, which depends on the reduced frequency. For the flow above a circle-cylinder it is shown that giving small symmetric displacements from its equilibrium position to a vortex pair positioned near the circle-cylinder, periodic oscillations set in. Expressions for closed orbits and their periods are obtained. For the large amplitude case the vortex trajectories are calculated numerically. For a circle-cylinder with strakes the vortex motions may be periodic, quasi-periodic or the vortices may be swept away, depending on the initial conditions. From the equations of motion of flexible slender bodies with constant crosssections...
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added: 12/11/2011
A Brief History Modern electronic computers, as we know them today, have many of their roots in the distant past. The Virtual Computer History Museum at Virginia Tech presents a Timeline of Events in Computer History at their website which offers an overview of the development of the computer which you may be interested in consulting for more detail on their early incarnations. The abacus can be considered a calculator of sorts, and slide rules and other mechanical calculators were created in the 1600s. In 1822, Charles Babbage, British mathematician, completed the construction of a mechanical device capable of calculating tables of logarithmic and trigonometric functions to six decimal places. He then began work on a steam powered calculating machine he called the Difference Engine, the purpose of which was to mechanically create mathematical tables for use by the government, the military, the banking business, and advanced engineering. Difference Engine built in 1991 from Babbage's drawings photo from the Timeline of Events in Computer History website He received government backing for the project, but it was never completed, partially because he continually tinkered with the design. A working model was produced in 1991 to commemorate the bicentenary Babbage's birth by the Science Museum in Kensington, England, based on his construction drawings. In 1834 he started to design the Analytical Engine. This is the true precursor of today's computers. This mechanical device used punched cards, one set for operations and another for variables.The Analytical Engine was a major leap forward in concept from the Difference Engine. It was not just a calculator of tables, but a mechanical processor. It was to be able to store variables and print results. It was designed not be limited to the simple performance sequential calculations to produce a static table, but instead to choose to perform the next operation depending on the results of...
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added: 01/03/2012
Are dinosaurs extinct or do they still exist today? Paleontologists, archeologists, scientist, almost everyone agrees that they are gone. All that is left are the remains lying uselessly in the dirt of the earth. However, there is proof that dinosaurs are still in existence today. Take, for example, the numerous old geezers who have been draining social security for over thirty or forty years. They are sill roaming the earth. There are still households where Frank Sanatra records are played on a turntable. Let us not forget those who still play Pong and Pac-man on a Commador 64, one of the first computers. There are a few of those things still in operation. All of these dinosaurs are, hopefully, few and far between, but they still exist and serve as an inspiration for future improvements. Mans ways and capabilities are far beyond what they ever have been. Technology is in constant progress. Medical advances have enabled old geezers to stick around even longer. There are billions, if not trillions, of stereos and portable cd players all over the world. Computers are smaller, faster, and capable of much more than was ever imagined when they first came out. They play a part in almost every aspect of life. Computers are always improving in order to not become dinosaurs. Who is doing all this work and coming up with all these improvements? It is not the computers. There are numerous people, behind the scenes, who make all of these changes happen. Computer Engineers are a large part of this dinosaur prevention group. Computer Engineering is a challenging, rewarding field with endless possibilities of advancement. Helpful Personality Traits Not everyone has what it takes to be a computer engineer. One of the most important requirements are good people skills. The stereotypical antisocial computer nerd would most...
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added: 01/02/2012
Computers are the future whether we like it or not. Some people dislike computers, because of the complications it takes to understand the basics. Computers are not exactly the easiest tools to work with, but they are the most rewarding, and they are the future. From my understanding Gateway and Dell are the two major competitors in the computer industry today. These two competitors have significant differences in their mission statements as well as their visions. The following vision and mission statement best state the core of Gateway, which has led to its great success. It's vision is to be the leading marketer of personal computer products in the world. And it's mission is to profitably grow their business faster than the competition by better understanding and serving the desires of their customers and aggressively marketing the highest value directly to their chosen markets. The company was formed for one purpose, to offer. They want people to have choices, a nice selection, good prices and a staff with a vast knowledge. On the other hand, In Dell's mission statement it says, "Dell wants to be the most successful computer company in the world at delivering the best customer experience in markets we serve. In doing so, Dell will meet customer expectations of:" Highest quality, leading technology, competitive pricing, individual and company accountability, best-in-class service and support, flexible customization capability, superior corporate citizenship, and financial stability. Gateway and Dell offer most of the same product line. Gateway provides products and services to the small and medium business with local sales, installation, and support – no other major PC vendor offers the local presence and personalized approach that Gateway does. Dell sells a range of personal computers, laptop computers, enterprise and workgroup servers, storage solutions and graphics workstations direct to business, education, the government...
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added: 12/07/2011
There are probably few adults these days who don't remember the excitement of playing early video games such as Pac Man, Space Invaders and Frogger. The ability to interact with a machine in a game situation was thrilling-and still is. Today, the little yellow dot-eater and the highly pixilated spaceships have evolved into seamlessly animated characters, graphic images of demons, and lifelike humans complete with lifelike weapons and lifelike blood. There are some benefits to video games. Studies have found that playing video games can improve children's visual attention skills, their spatial skills, their iconic skills and their computer literacy skills. In addition, the use of educational games, which are almost exclusively sold for the PC, have been shown to help improve academic performance. However, many more studies have shown relationships between playing video games and unhealthy outcomes, such as isolation and loneliness, obesity, belief in gender stereotypes and increased aggressive behavior. In fact, video games' unique interactive capabilities may make them even more likely to influence children's attitudes, beliefs and behaviors than more traditional forms of media. Gender (study of thousands of computer game characters) Although sexy female characters are created to appeal to males, they can send harmful messages to both male and female players. Just as young girls may interpret highly sexualized characters as symbols of the "ideal woman," so too may young boys. These impressions may influence girls' feelings about themselves and their place in the world, and they may also influence boys' expectations and treatment of females. In both cases, these images can have unhealthy effects on children's self-esteem, behavior and relationships with others. One out of every ten female characters (11%) had a very voluptuous body (i.e., very large breasts and a very small waist). Another 7% of female characters had either very thin or extremely disproportionate bodies, meaning...
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added: 10/01/2011
Computer hackers in today's world are becoming more intelligent. They are realising that people are developing more hack-proof systems. This presents the hackers with a bigger challenge, which brings out more fun for them. The government is realising this and needs to make harsher laws to scare the hackers more. With the increase in hacking and hacker intelligence, governmental regulation of cyberspace hasn't abolished the fact that it's nearly impossible to bring a hacker to justice. Kevin Mitnick, a hacker who has yet to have a harsh punishment when caught, can somehow lower his punishment for his hacking crimes down to a couple months probation. When Kevin was seventeen, he was caught for breaking into a phone centre in Los Angeles. He was trailed and sentenced to three months stay in juvenile detention centre and 1 year probation. Kevin is a very intelligent man. He could use his computer skills in a good way by stopping other hackers. He didn't, so he faced the law many times. In all those times, he never spent more than a year in prison. Kevin was also a Phreak: a phone freak. He studied the phone system. He soon knew how to make free phone calls from payphones and how to crash a system. Kevin Mitnick has yet to be harshly punished for these crimes, which are very numerous. Another major player in the hacking industry is an unidentified man, known by his nickname, Deth Vegetable. His group of hackers, Cult of the Dead Cow, is one of the oldest hacker organizations still in effect today. He is the leader and founder of Cult of the Dead Cow. They are a notorious group of hackers who have a couple problems, one of which is drug use. At a convention that the cDc holds for "some of...
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added: 02/18/2012
Today, both the Internet and corporate intranets are simply crawling with people from all walks of life that are continuously trying to test the security of various systems and networks. Some of these people are seeking some sort of intellectual high, while others are fueled by more treacherous motives such as revenge or stealing for profit. To gain access to your system an attacker may try several different measures to cause you some kind of disruption or takeover your system. In this paper we will discuss a few of the problems associated with computer security in the twenty-first century, best system practices, and some ways you can prevent intrusion related problems.
Data in an IT system is at risk from various sources—user errors, viruses, malicious, and non-malicious attacks. Accidents can occur and attackers can gain access to the system and disrupt services, render systems useless, alter, delete, or steal information. An IT system may need protection for one or more of the following aspects of data:
• Confidentiality. The system contains information that requires protection from unauthorized disclosure. Examples: Timed dissemination information (for example, crop report information), personal information, and proprietary business information.
• Integrity. The system contains information that must be protected from unauthorized, unanticipated, or unintentional modification. Examples: Census information, economic indicators, or financial transactions systems.
• Availability. The system contains information or provides services that must be available on a timely basis to meet mission requirements or to avoid substantial losses. Examples: Systems critical to safety, life support, and hurricane forecasting.
Security administrators need to decide how much time, money, and effort needs to be spent in order to develop the appropriate security policies and controls. Each organization should analyze its specific needs and determine its resource and scheduling requirements and constraints. Computer systems, environments, and organizational policies are different, making each...
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added: 10/23/2011