Computers In World Essays - Hacker, Computer Programming, Software

Computers In World Since the first computer was made in the late fifties, the technology has developed extremely. Computers which took the place of a living-room then, are now being made in creditcard-formats. More and more areas are being taken over by the computer. As computers are capable of handling large amounts of data in a very short time, they are well suited for wordprocessing. I guess that it won't be long till all the paper-archives are replaced by magnetic tapes and diskettes. A diskette can contain much more data than a written page, and it takes less place It is possible to get the Norwegian telephone book on just one diskette. In near future, a new area will be taken over by computers, namely maps. Different routes are stored on one single compact-disk. Imagine, simply insert the CD into the CD-driver in your car, and tell the computer where to go. The rest will be done automatically. This will be a safer, faster, and more comfortable way to travel. Another new area, called "virtual reality" is currently being tested. This is a way to simulate reality on a monitor. In order to feel this so-called reality you have to wear special electronic glasses and an electronic suit. Fastened to the suit are sensors, which send information to the main computer. This computer works with the data and displays them on the electronic spectacles. This is a technique which use three-dimentional views, therefore the scenery seems incredibly realistic. If you want to be a boxer, simply change the scenery on the main computer, and you are in the ring. Today, many kids have got video games. You could say these games are the present's answer to ludo and monopoly. In a way, it is a great advantage that the kids are being presented to computors at an early age, because they will definitely have to use them later, when they start to work. In the future there will be few occupations which won't use computors, one way or another. But the videogames are often being presented as something negative, which hinder the kids from doing homework and other more useful activities. This partially true, if they do much of it. But generally, I think the young people's contact with computers is positive. In Norway today, it is getting more common to have a computer at home. You can use a personal computer to keep household-budgets or other economics. It is also possible to get in touch with your bank and transwer money while you're in your sitting-room. It is possible to contact other databases and gather information from them. The use of computers has lead to other criminal actions. "Hacking" is one of them. A "hacker" steals and manipulates information from other databases. These crimes can be very harmful. In The USA, hackers have managed to break into NASA's database. The computer-programmes, the software, are extremely high priced, sometimes they are even more expensive than the hardware. Therefore it is not unusual to make copies of these programmes. This is strictly illegal, but nobody seems to care, because it is difficult to control it. Software producers loose BILLIONS of dollars each year because of this. Many methods have been invented to prevent this, but since the "hackers" often are more intelligent than those who make the software, I doubt that there will ever be a successfull way to hinder this.

Economics in the wester civili essays

Economics in the wester civili essays At a very young age Samantha Ann Olivia had to endure hardships most people never have to experience. Most people grow up knowing their biological mother and father, but Samantha did not have this luxury. Born on September 14, 1982 she was given up for adoption almost immediately. At age two months she started her journey from South Colombia, of course too young at this point to realize the mental anguish to come in later years. After being put up for adoption Samantha (or Sam as she prefers to be called) was quickly accepted by a loving family consisting of two older brothers, and a caring mother and father in downtown Brooklyn, New York. Here, Sam resided until the age of four years. At four she moved with her family to Staten Island, New York. Her parents enrolled her in Our Lady Queen of Peace Catholic school where she started elementary education. I have a lot of good memories from my younger years at school and hanging out around New Dorp, said Samantha. When I started getting older, around twelve, it had finally hit me that I was different than my family. I think I always knew but this is when I was able to talk about it with my parents. After asking her parents many questions, Sam was able to accept that these were not her biological parents, but they will always be her mother and father. At first it was a horrible thought. After crying a lot and thinking I was different from everyone, I realized no one has a perfect family and then it really didnt bother me much. Samantha came to realize that she had the same experiences, hopes, dreams and great memories as so many of her friends. Some of my greatest memories are of hanging out with my two older brothers, Sam said happily. When I was just four years old and with my brothers friends in Brooklyn. In the front of my house is a big black metal fence. My brothers friend was making fun of me and I ...

The measurement tecniques of Particulate Matter2.5 (PM2.5) Essay

The measurement tecniques of Particulate Matter2.5 (PM2.5) - Essay Example An earlier research has shown a relationship between hydrogen and a trace element (ANSTO, 2003). For analyzing these suspended particulate matters, these particles have to be collected as per a standard procedure and thereafter have to be investigated. For analyzing the nature of these suspended particles especially PM2.5 various analytical techniques are used. Analytical techniques such as particle induced X-ray emission or particle induced gamma ray emission; IR spectroscopy and gas chromatography are used for finding the elements, inorganic compounds and organic compounds respectively (Measurement methods, 2007). In the present study a literature search has been carried out to study the impact of bushfires on our environment and the examples of Australia and Singapore bush fires has been covered. A brief introduction of PM2.5 has also been covered. A few analytical instruments utilized by the various environmental protection agencies have been studied with respect to their advantages in bushfires. The through principles of the instrument techniques were also studied and a conclusion of the study has been made. The most common measurement in air quality is the concentration of suspended particles in it and is reported as the PM index. ... PM10 (where the total concentration of all particles having diameter less than 10 m) are being monitored by various government agencies in many countries such as US, Canada (Baird, 2005). Many government agencies are also looking for monitoring fine suspended particles having diameter less than 2.5 m, as these are within the respirable range and can penetrate deep into the lungs. US EPA specification for PM 2.5 US EPA National Ambient Air Quality standards (NAAQS) have set standards for particulate matter PM2.5 and PM10. For PM2.5 it has set an annual average of 15 g/m3 with a 24 hour standard of 65g/m3 and for PM10 an annual average of 50 g/m3 with a 24-hour standard of 150 g/m3 (ANSTO, 2003). A short term US EPA NAAQS standard for air borne particulate matter is given in Table-1. As many countries still do not have their own specifications for PM2.5, most of the countries follow US EPA guidelines. Sampling of Particulate Matters: It is really difficult to collect a representative sample especially from a bushfire. However the sample should be collected from multiple locations so that the analysis gives more prcis and meaningful results. The sample collected from different part can either be mixed or separate analysis can be carried out. There are various methods involved for collecting particulate matters. A few methods are summarized below. a) Filter cups: Filters are the simplest way of collecting particulate matters. Aerosol sample is passed through a set of filters at a controlled rate so that a specific particulate matters are collected through a specific filter. These filter papers are cellulose, glass fiber, teflon or a combination of materials (Thompson, 1998). b) Cyclones: