Computer Assignment #2 GPS Algorithm Introduction In order to guide each object correctly on the earth‚ the GPS satellites need to locate them very accurately. The goal of the assignment is to use some optimization methods to locate an object with given pseudo-range data. The signals which are sent from satellites to the target are not accurate because the systematic errors caused by inaccurate receiver clock and some other random noise. The un-accurate range is known as pseudo-range comparing with
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2010 A Secure Steganography Method based on Genetic Algorithm Shen Wang‚ Bian Yang and Xiamu Niu School of Computer Science and Technology Harbin Institute of Technology 150080‚ Harbin‚ China shen.wang@ict.hit.edu.cn; bian.yang@ict.hit.edu.cn; xiamu.niu@hit.edu.cn Received April 2009; revised August 2009 Abstract. With the extensive application of steganography‚ it is challenged by steganalysis. The most notable steganalysis algorithm is the RS attack which detects the steg-message by the
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* RSA is an algorithm for public-key cryptography that is based on the presumed difficulty of factoring large integers‚ the factoring problem. * RSA stands for Ron Rivest‚ Adi Shamir and Leonard Adleman‚ who first publicly described the algorithm in 1977. * Clifford Cocks‚ an English mathematician‚ had developed an equivalent system in 1973‚ but it was classified until 1997 * The RSA scheme is a block cipher in which the plain text and cipher text are integers between 0 and n-1
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assessment 1. Use the following pseudo code with your own choice of values of X. 10 INPUT X 20 LET Y = X/3 30 LET R = Y – INT(Y) 40 IF R = 0 PRINT ACCEPT‚ GOTO A 50 PRINT REJECT 60 LABEL A 70 END (i) Explain what is being achieved. [4] (ii) If you replaced the line LET Y = X/3 by the line LET Y = X/5‚ how would this change the outcome of the above? [1] 2. The following algorithm is to be applied to the positive integers from 1 to
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PageRank Algorithm December 9‚ 2012 Abstract This paper dicsusses the PageRank algorithm. We carefully go through each step of the algorithm and explain each procedure. We also explain the mathematical setup of the algorithm‚ including all computations that are used in the PageRank algorithm. Some of the topics that we touch on include the following‚ but not limited to‚ are: linear algebra‚ node analysis‚ matrix theory‚ and numerical methods. But primarily this paper concerns itself with
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Hammurabi’s Code: You Be the Judge Complete the chart below as your group examines and discusses cases. Case Title Social Class of Person on Trial Judgment/Punishment (based on Hammurabi) Citizen Accused of Stealing an Ox Citizen Put to death Commoner Accused of Harboring a Runaway Slave Commoner Put to death Commoner and Soldier Claiming the same piece of land Soldier and a commoner The field‚ orchard‚ or house shall return to its rightful owner. Nobleman and Slave Involved in
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Algorithm The term algorithm is often used to refer to the logic of a program It is a step-by step description of how to arrive at the solution of the given problem. It may be formally defined as a sequence of instructions‚ designed in a manner that‚ if the instructions are executed in the specified sequence‚ the desired results will be obtained. In order to qualify as an algorithm‚ a sequence of instructions must possess the following characteristics: Sample Algorithms 50 Students in a class
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ANACOR The ANACOR algorithm consists of three major parts: 1. 2. 3. A singular value decomposition (SVD) Centering and rescaling of the data and various rescalings of the results Variance estimation by the delta method. Other names for SVD are “Eckart-Young decomposition” after Eckart and Young (1936)‚ who introduced the technique in psychometrics‚ and “basic structure” (Horst‚ 1963). The rescalings and centering‚ including their rationale‚ are well explained in Benzécri (1969)‚ Nishisato (1980)
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THE THREE ELEMENTARY SORTING ALGORITHMS Bubble Sort Bubble Sort is probably one of the oldest‚ easiest‚ straight-forward‚ and inefficient sorting algorithms. It is the algorithm introduced as a sorting routine in most introductory courses on Algorithms. Bubble Sort works by comparing each element of the list with the element next to it and swapping them if required. With each pass‚ the largest of the list is "bubbled" to the end of the list whereas the smaller values sink to the bottom.
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Wright’s Savings Algorithm Jens Lysgaard (translated by Michael M. Sørensen) Department of Management Science and Logistics The Aarhus School of Business Fuglesangs Allé 4 DK-8210 Aarhus V September 1997 1. Introduction. In 1964 Clarke & Wright published an algorithm for the solution of that kind of vehicle routing problem‚ which is often called the classical vehicle routing problem. This algorithm is based on a so-called savings concept. This note briefly describes the algorithm and demonstrates
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