Computers & Science
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Microsoft’s Windows OS is based on DOS programming language, designed by both businesses as well as a wide range of other applications. It is easily the most widely used operating system, which is however notorious for numerous vulnerabilities and poor technological support (Bodden, 2008). Apple, Inc.’s Mac OS on the other hand, is based on LINUX, and incorporates one of the most elegant user interfaces, making it multiply easy to use. Windows OS lays emphasis on Office functions, in order to increase applicability, while Mac OS lays greater emphasis on GUI and multimedia functions, which increase ease of use. In addition, LINUX family of OSs are designed to operate large computers, and Mac OS seeks to apply these technologies to personal computers (Tanenbaum & Woodhull, 2006).
Portfolio optimization is a mathematical model that is applied in the process of investment decision-making across a set of assets or financial instruments. This model was invented by Prof. Harry Markowitz in the 1950s. While developing this model, Markowitz was trying to solve the following problem: Given a fixed collection of assets, determine the portfolio that combines the assets using an optimal fixed percentage asset allocation given the risk preferences of an individual investor (Prigent 2007). Portfolio optimization is based on a number of assumptions, including the investment will be for a single period of time, asset prices display a jointly distributed lognormal random walks, unconstrained asset allocation, and the objective is to capitalize on the predictable utility of wealth at the end of period. Portfolio optimization can be undertaken using various techniques but the most common include quadratic programming, mixed integer programming, as well as nonlinear programming. In addition to being applied as an investment decision-making tool, portfolio optimization is also used in divestment and capital allocation decisions (Wachowicz and Horne, 2008).
Computer networking is a term that is used to refer to the interconnection of computers so as to facilitate communication and share resources. Computer networks can be classified according to a variety of characteristics such as the medium which is used to transport data. Networks can also be classified depending on the method of connection used. We can have wired computer networks or wireless computer networks. A wired computer network uses cables to interconnect different computers in the setup while the wireless networks do not use any kind of physical connection.
Management: Introduction to Computer 2
A computer can be defined as an electronic device, which manipulates data or information and has the capability and ability to process, store, and retrieve data. It can be used for document typing, internet searching, surfing, and emailing. Computer can also be used in handling accounting, spreadsheets, database management, games, and presentations. The development and production of the present-day computer is credited to the result of advances and progress in technologies and need for quantification. Abacus, which was one of the first counting machines, paved the way for the production and manufacture of computer (Kopplin, 2002).
Should Computer Literacy Be Required for All College Students?
Having access to computer software and the Internet became very important in the modern world. Whatever position you hold, you need a computer support. A manager uses his laptop to look through financial statements, send emails or hold videoconferences.
Importance of Computers Knowledge
As of today, computers have confidently occupied the position of the best people’s helpers in almost all the spheres of life. More and more starts to depend on them: medicine, business, production, entertainment, etc. Is it good? What results can it bring? And is it necessary to know how to work on them?
Today, we can hardly deny the fact that a person who possesses information rules the world. Information is a very valuable and sometimes expensive knowledge that can be used for the benefit of its owner; and it isn’t a secret that many enterprises and individuals use mainly wireless systems to share this useful information with their partners.
Wireless networks are widespread and used by different organizations and individuals. They provide many opportunities and benefits for their users, but at the same time bring some problems; the main issue is information security. It has become really vital because at present a hacker can get access through one wireless laptop used by the company to its whole network.
It is so much fun to watch how science fiction stories become reality – like laser guns and genetic engineering. Due to all the talks about ecology, more and more plots tell us about some kind of huge disasters that threaten humankind and make the bravest go find a new shelter in the outer space. If you take ecological threats seriously, they seem to be good reasons for space exploration.
Computer is probably the greatest invention in the last hundred years. The impact that it has created on our lives is tremendous. It affects so many areas of our daily routine like no other single invention has ever managed to accomplish. We are becoming more and more dependent on the computer with the passage of time. Right from weather predictions to the fuel injection systems in our cars make use of computers. We are dependent on one single kind of machine to run our lives like no other generation that lived before us. And this trend is all set to continue in the future as well.
Getting to know people from all over the world and sending them instant messages is no longer a dream. It has become a part of our daily routine since computer-based communication programmes were invented. However, people are starting to doubt that this dream was worth fulfilling.