Computing is usually defined as the activity of using and developing computer A computer is a machine that manipulates data according to a set of instructions technology, computer hardware A personal computer is made up of multiple physical components of computer hardware, upon which can be installed an operating system and a multitude of software to perform the operator's desired functions and software Computer software, or just software is a general term used to describe the role that computer programs, procedures and documentation play in a computer system. It is the computer-specific part of information technology Information technology , as defined by the Information Technology Association of America (ITAA), is "the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware." IT deals with the use of electronic computers and computer software to. Computer science Computer science is the study of the theoretical foundations of information and computation, and of practical techniques for their implementation and application in computer systems. It is frequently described as the systematic study of algorithmic processes that create, describe and transform information. According to Peter J. Denning, the (or computing science) is the study and the science of the theoretical foundations of information and computation and their implementation and application in computer systems.
Computing Curricula 2005[1] defined computing:
In a general way, we can define computing to mean any goal-oriented activity requiring, benefiting from, or creating computers. Thus, computing includes designing and building hardware and software systems for a wide range of purposes; processing, structuring, and managing various kinds of information; doing scientific studies using computers; making computer systems behave intelligently; creating and using communications and entertainment media; finding and gathering information relevant to any particular purpose, and so on. The list is virtually endless, and the possibilities are vast.
A computer is a machine A machine is any device that uses energy to perform some activity. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work. A simple machine is a device that transforms the direction or magnitude of a force without consuming any energy. The word "machine" is derived from the that manipulates data In computer science, data is anything in a form suitable for use with a computer. Data is often distinguished from programs. A program is a set of instructions that detail a task for the computer to perform. In this sense, data is thus everything that is not program code according to a set of instructions In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language. Source code is the mechanism most often used by programmers to specify the actions to be performed by a computer called a computer program Computer programs are instructions for a computer. A computer requires programs to function, typically executing the program's instructions in a central processor. The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, from which executable. The program has an executable Execution in computer and software engineering is the process by which a computer or a virtual machine carries out the instructions of a computer program. The instructions in the program trigger sequences of simple actions on the executing machine. Those actions produce effects according to the semantics of the instructions in the program form that the computer can use directly to execute the instructions. The same program in its human-readable source code In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language. Source code is the mechanism most often used by programmers to specify the actions to be performed by a computer form, enables a programmer A programmer is someone who writes computer software. The term computer programmer can refer to a specialist in one area of computer programming or to a generalist who writes code for many kinds of software. One who practices or professes a formal approach to programming may also be known as a programmer analyst. A programmer's primary computer to study and develop the algorithm In mathematics, computing, and related subjects, an algorithm is an effective method for solving a problem using a finite sequence of instructions. Algorithms are used for calculation, data processing, and many other fields. Because the instructions can be carried out in different types of computers, a single set of source instructions converts to machine instructions according to the central processing unit The Central Processing Unit or processor is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer's functions. This term has been in use in the computer industry at least since the early 1960s (Weik 2007). The form, design and implementation of CPUs have type.
The execution process In computing, a process is an instance of a computer program, consisting of one or more threads, that is being sequentially executed by a computer system that has the ability to run several computer programs concurrently carries out the instructions in a computer program. Instructions express the computations Computation is a general term for any type of information processing. This includes phenomena ranging from human thinking to calculations with a more narrow meaning. Computation is a process following a well-defined model that is understood and can be expressed in an algorithm, protocol, network topology, etc. Computation is also a major subject performed by the computer A computer is a machine that manipulates data according to a set of instructions. They trigger sequences of simple actions on the executing machine. Those actions produce effects according to the semantics In theoretical computer science, formal semantics is the field concerned with the rigorous mathematical study of the meaning of programming languages and models of computation of the instructions.
Computer programming Computer programming is the process of writing, testing, debugging/troubleshooting, and maintaining the source code of computer programs. This source code is written in a programming language. The code may be a modification of an existing source or something completely new. The purpose of programming is to create a program that exhibits a certain in general is the process of writing, testing, debugging, and maintaining the source code In computer science, source code is any collection of statements or declarations written in some human-readable computer programming language. Source code is the mechanism most often used by programmers to specify the actions to be performed by a computer and documentation of computer programs Computer programs are instructions for a computer. A computer requires programs to function, typically executing the program's instructions in a central processor. The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, from which executable. This source code is written in a programming language A programming language is an artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine, to express algorithms precisely, or as a mode of human communication, which is an artificial language A planned or constructed language—known colloquially or informally as a conlang—is a language whose phonology, grammar, and/or vocabulary have been consciously devised by an individual or group, instead of having evolved naturally. There are many possible reasons to create a constructed language: to ease human communication ; to bring fiction, restrictive, demanding, and unforgiving to humans but easily translated by the computer. The purpose of programming is to invoke the desired behaviour (customization) from the machine. The process of writing high quality source code requires knowledge of both the application's domain and the computer science domain. The highest quality software is thus developed by a team of various domain experts, each person a specialist in some area of development. But the term programmer may apply to a range of program quality, from hacker In home computing, a hacker is a person who heavily modifies the software or hardware of their computer system. It includes building, rebuilding, modifying and creating software and electronic hardware (hardware hacking, modding) either to make it better, faster, give added features or to make it do something it was never intended to do. Hobby to open source contributor In one of several meanings of the word in computing, a hacker is a member of the computer programmer subculture originated in the 1960s in the United States academia, in particular around the Massachusetts Institute of Technology 's Tech Model Railroad Club (TMRC) and MIT Artificial Intelligence Laboratory. Nowadays, this subculture is mainly to professional. And a single programmer could do most or all of the computer programming needed to generate the proof of concept Proof of concept is a short and/or incomplete realization of a certain method or idea(s) to demonstrate its feasibility, or a demonstration in principle, whose purpose is to verify that some concept or theory is probably capable of exploitation in a useful manner. A related (somewhat synonymous) term is "proof of principle" to launch a new "killer" application A killer application , in the jargon of computer programmers and video gamers, has been used to refer to any computer program that is so necessary or desirable that it proves the core value of some larger technology, such as computer hardware like a gaming console, operating system or other software. A killer app can substantially increase sales.
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Gartner defines Cloud . computing. as a style of . computing. , where elastically scalable IT services are delivered to customers using Internet technologies. This is one definition, and there are nuances between private cloud services (which ...
Q. In statistical analysis, Is it appropriate to use averages when computing correlations? Should individual data be subject to the average of a group? I appreciate any insight on this.
Asked by B. C - Wed Feb 27 17:31:18 2008 - - 1 Answers - 0 Comments
A. Your question is a bit vague. You need to use averages so that you can calculate the variance and covariance for finding the correlation. If you are looking at the correlation of one set of averages vs. another set that is fine as long as you are doing it in such a way that each average is a independent sample from a population. The correlation coefficient, r, is a measure of the linear relationship between two variables. If the data is non-linear then the correlation coefficient is meaningless. r takes on values between -1 and 1. negative values indicate the relationship between the variables is indirect, i.e., on a scatter plot the data tends to have a negative slope. Positive values for r indicate the data tends to have a… [cont.]
Answered by Merlyn - Wed Feb 27 19:05:57 2008
