...A detailed search of the Web site has been conducted, and no files were found beyond the static HTML Web pages expected. Three workstations are used to update content on the Web site, and a network packet trace has been captured for traffic between the workstations and the internal FTP upload site for posting data to the Web server. This packet trace is available for your use. Once you understand the situation, your manager tells you to divide the investigation into three parts. The first part involves the use of NetWitness Investigator to identify user credentials, correlate source host address(s), and evaluate network traffic for unusual activity that might provide a starting point for your system forensic investigation. In the second part, you will use Paraben P2 Commander to examine a forensic system image and evaluate files, communications, and applications, which could be items of potential evidentiary value in this investigation. You will use your findings from the first part of the investigation to guide your selection of workstation(s) for review and user profile(s) for specific investigation. In the third part, you need to document your results along with the investigative process and any indicators you discovered that led to additional actions on your part. The investigation must be limited to the scope identified by these indicators, and all investigative actions should be supportable if you are called as an expert witness in later proceedings. AAA Computer...
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...heat and radiation). As the nuclear fuel runs out (in about 5 billion years), the star expands and the core contracts, becoming a giant star which eventually explodes and turns into a dim, cool object (a black dwarf, neutron star, or black hole, depending on its initial mass). The largest stars have the shortest life span (still billions of years); more massive stars burn hotter and faster than their smaller counterparts (like the Sun). The composition of stars is studied using spectroscopy in which their visible light (the spectrum) is studied. GROUPS OF STARS In the universe, most stars occur in groups of at least two stars. Two stars that are locked in elliptical orbit around their center of mass (their barycenter) are called a binary star system. About half of all stars are in a...
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...Astronomy paper Introduction: Searching for extra-solar planets is not a very easy task. Because most of the times we find them by not actually looking at them but by the effects they produce mainly on the star around which they are rotating. It is because planets look like just a dull spec of light through a telescope. The distance between us and a nearby planet is very large. In our scale model it will be like looking at a dust particle in Thunder Bay Ontario if we are sitting in Halifax with our telescope. That’s why astronomers have adopted various techniques to find extra-solar planets. In most of the techniques we focus on the star around which planets are rotating and by noticing the changes occurring in star we can decide whether that star has planet(s) or not. The following methods are used for that purpose. 1. Astrometry 2. Radial Velocity Method 3. Pulsar Timing 4. Transit Method 5. Gravitational Microlensing Astrometry: This is the oldest method used to search extra-solar planets. This planet is basically used to find the mass of thee planet. This method is based on the gravitational effect of planet on its host star. As the planet rotates around its star, it applies gravitational force on the star and makes the star to move under the effect of its (planet) gravity. Thus, both the star and the planet revolve around a common center of mass also called center of gravity. Thus, the position of star always keeps on changing, which...
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...Information Retrieval P. BAXENDALE, Editor A Relational Model of Data for Large Shared Data Banks E. F. CODD IBM Research Laboratory, San Jose, California Future users of large data banks must be protected from having to know how the data is organized in the machine (the internal representation). A prompting service which supplies such information is not a satisfactory solution. Activities of users at terminals and most application programs should remain unaffected when the internal representation of data is changed and even when some aspects of the external representation are changed. Changes in data representation will often be needed as a result of changes in query, update, and report traffic and natural growth in the types of stored information. Existing noninferential, formatted data systems provide users with tree-structured files or slightly more general network models of the data. In Section 1, inadequacies of these models are discussed. A model based on n-ary relations, a normal form for data base relations, and the concept of a universal data sublanguage are introduced. In Section 2, certain operations on relations (other than logical inference) are discussed and applied to the problems of redundancy and consistency in the user’s model. KEY WORDS AND PHRASES: data bank, data base, data structure, data organization, hierarchies of data, networks of data, relations, derivability, redundancy, consistency, composition, join, retrieval language,...
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...Gravitational waves: Understanding and Detection Final draft Physics 222 November 11, 1999 Aaron Astle Dan Hale Dale Kitchen Wesley Krueger Abstract Gravitational waves carry information about catastrophic events in the universe. We give a brief description of gravitational waves with an overview of the current projects underway to detect them. We begin by discussing the theoretical prediction of gravitational waves from Einstein's General Theory of Relativity. We list several possible sources of these waves and describe how they produce gravitational waves. We also discuss the characteristic signals each source sends to Earth. We outline advantages and challenges for several detection methods now being implemented. These include resonant mass detectors and laser interferometry. We also discuss improvements being made to each system and how these improvements further our progress towards detection of the waves. Finally, we conclude with a prediction that laser interferometry will first detect these waves within the next few years. In 1905 Albert Einstein presented his Theory of Special Relativity with two postulates that led to a new realm of reasoning and observing the universe. Eleven years later Einstein extended these postulates to form the General Theory of Relativity. This theory predicts the existence of gravitational waves and describes properties these waves must have. If such gravitational waves could be detected, they could reveal much about...
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...Questions Chapter 1 1.1 A program is a set of instructions that a computer follows to perform a task. 1.2 Hardware is all of the physical devices, or components, that a computer is made of. 1.3 The central processing unit (CPU), main memory, secondary storage devices, input devices, and output devices. 1.4 The CPU 1.5 Main memory 1.6 Secondary storage 1.7 Input device 1.8 Output device 1.9 One byte 1.10 A bit 1.11 The binary numbering system. 1.12 It is an encoding scheme that uses a set of 128 numeric codes to represent the English letters, various punctuation marks, and other characters. These numeric codes are used to store characters in a computer's memory. (ASCII stands for the American Standard Code for Information Interchange.) 1.13 Unicode 1.14 Digital data is data that is stored in binary, and a digital device is any device that works with binary data. 1.15 Machine language 1.16 Main memory, or RAM 1.17 The fetch-decode-execute cycle. 1.18 It is an alternative to machine language. Instead of using binary numbers for instructions, assembly language uses short words that are known as mnemonics. 1.19 A high-level language 1.20 Syntax 1.21 A compiler 1.22 An interpreter 1.23 A syntax error 1.24 The operating system 1.25 A utility program 1.26 Application software Chapter 2 2.1 Any person, group, or organization that is asking you to write a program. 2.2 A single function that the program must perform in order to satisfy the customer...
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...Dissertation Phase-I: Synopsis Topic: OPTIMUM THRESHOLDING USING FUZZY TECHNIQUES Guided by- Presented by- Mr.Puneet Manocha Anupama (Roll No.1600872) Assit. Professor IIIrd Semester, M.Tech (ICE) OBJECTIVE: * To review different research papers based on Fuzzy Thresholding. * To apply fuzzy thresholding technique to an image * To calculate optimum threshold using Gamma membership function. LITERATURE REVIEW: Introduction: Typical computer vision applications usually require an image segmentation-preprocessing algorithm as a first procedure. At the output of this stage, each object of the image, represented by a set of pixels, is isolated from the rest of the scene. The purpose of this step is that objects and background are separated into non-overlapping sets. There are various techniques of segmentation and among them threshold is much simpler than other segmentation techniques. Usually, this segmentation process is based on the image gray-level histogram. In that case, the aim is to find a critical value or threshold. Through this threshold, applied to the whole image, pixels whose gray levels exceed this critical value are assigned to one set and the rest to the other. For a well-defined image, its histogram has a deep valley between two peaks. Around these peaks the object and background...
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... p. 102 Solving the Stadium Seating Problem, p. 151 Using an if Statement, p. 162 Using an if/else Statement, p. 172 Using an if/else if Statement, p. 175 Solving the Time Calculator Problem, p. 236 The while Loop, p. 249 The for Loop, p. 263 Nested Loops, p. 277 Solving the Ocean Levels Problem, p. 299 Defining and Calling Functions, p. 306 Using Function Arguments, p. 316 Value-Returning Functions, p. 326 Solving the Markup Problem, p. 380 Creating a Class, p. 391 Creating and Using Class Objects, p. 393 Creating and Using Structures, p. 436 Solving the Car Class Problem, p. 480 Accessing Array Elements, p. 487 Passing an Array to a Function, p. 517 Two-Dimensional Arrays, p. 526 Solving the Chips and Salsa Problem, p. 567 Performing a Binary Search, p. 580 Sorting a Set of Data, p. 587 Solving the Lottery Winners Problem, p. 616 (continued on next page) Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 LOCATION OF VIDEONOTES IN THE TEXT Chapter 10 Pointer Variables, p. 621 Dynamically Allocating an Array, p. 645 Solving the Days in Current Month Problem, p. 676 (continued) Chapter 11 Operator Overloading, p. 704 Aggregation and Composition, p. 734 Overriding Base Class Functions, p. 755 Solving the Number of Days Worked Problem, p. 768 Converting Strings to Numbers, p. 788 Writing a C-String Handling Function, p. 800 Solving the Backward...
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...Exercises For Exercises 1-10, indicate which structure would be a more suitable choice for each of the following applications by marking them as follows: A. Stack B. Queue C. Tree D. Binary search tree E. Graph |1. |A bank simulation of its teller operation to see how waiting times would be affected by | | |adding another teller. | | |B | |2. |A program to receive data that is to be saved and processed in the reverse order | | |A | |3. |An electronic address book ordered by name | | |D | |4. |A word processor to have a PF key that causes the preceding command to be redisplayed. | | |Every time the PF key is pressed, the program is to show the command that preceded the | | |one currently displayed | | |A | |5. |A dictionary of words used by a spelling checker to be built and maintained. | | |D ...
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...document will be demonstrating the implementation of Stacks and Queues. Phase 2 Hash tables can be viewed as an array of lists and are used to speed up a search for data by creating a situation that does not require the search to start at the beginning and go through every item. The identifying value is the key and the associated record is the data, thus a hash table is a collection of (key, value) pairs. Phase 3 In order to efficiently use a database, the data must be stored in some sort of order. There are a number of different sorting algorithms; a programmer would choose which one to use depending on the amount and type of data being sorted. Insertion sort, Bubble sort, and Selection sort are described with examples. Phase 4 A binary tree, is a node-based data structure where each node has a comparable key (and an associated value) and satisfies the restriction that the key in any node is larger than the keys in all nodes in that node's left subtree and smaller than the keys in all nodes in...
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...Unit 1 Topics Course Overview C++ Programming Language Basics Functions; Strings; Input/Output Streams Collections, Containers Abstract Data Types (ADTs) Stack/Queue, Vector, Grid, Map, Set, Lexicon Designing Classes Recursion Recursive Algorithms and Data Fractals Recursive Exhaustive Search Backtracking Sorting Algorithm Efficiency; Big-Oh Notation Arrays and Pointers Dynamic Memory Allocation Implementing Collection Classes Hashing Linked Lists Linked Data Structures Binary Trees; Binary Search Trees (BSTs) Graphs Advanced Topics Readings Chapters 1-4 Assignments HW1: Life 2 Chapters 5-6 HW2: Word Ladders, Random Writer 3 Chapters 7-8 HW3: Recursion 4 Chapters 9-10 HW4: Boggle 5 Chapters 11-12, 14 HW5: Priority Queue 6 Chapters 12, 14, 16 HW6: Huffman Encoding 7 Chapters 18-20 HW7: Trailblazer Please note that this is a preliminary rough schedule and is subject to change without advance notice. Refer to the course web site for the most up-to-date information about what topics will be covered, appropriate reading, and assignments. This document is copyright © Marty Stepp, licensed under Creative Commons Attribution 2.5 License. All rights reserved....
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...Data Structures and Algorithms DSA Annotated Reference with Examples Granville Barne Luca Del Tongo Data Structures and Algorithms: Annotated Reference with Examples First Edition Copyright c Granville Barnett, and Luca Del Tongo 2008. This book is made exclusively available from DotNetSlackers (http://dotnetslackers.com/) the place for .NET articles, and news from some of the leading minds in the software industry. Contents 1 Introduction 1.1 What this book is, and what it isn’t . . . 1.2 Assumed knowledge . . . . . . . . . . . . 1.2.1 Big Oh notation . . . . . . . . . . 1.2.2 Imperative programming language 1.2.3 Object oriented concepts . . . . . 1.3 Pseudocode . . . . . . . . . . . . . . . . . 1.4 Tips for working through the examples . . 1.5 Book outline . . . . . . . . . . . . . . . . 1.6 Testing . . . . . . . . . . . . . . . . . . . 1.7 Where can I get the code? . . . . . . . . . 1.8 Final messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 3 4 4 6 6 7 7 7 I Data Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . reverse order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
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...Face Interviews Confidently! Technical Aptitude Questions Table of Contents Data Structures Aptitude ............................................................................. 3 C Aptitude .................................................................................................. 12 C++ Aptitude and OOPS ............................................................................ 75 Quantitative Aptitude............................................................................... 104 UNIX Concepts ......................................................................................... 121 RDBMS Concepts ..................................................................................... 135 SQL .......................................................................................................... 153 Computer Networks ................................................................................. 161 Operating Systems .................................................................................. 169 2 Copyright©: Vyom Network (http://www.vyomworld.com) - All Rights Reserved Technical Aptitude Questions Data Structures Aptitude Data Structures Aptitude 1. What is data structure? A data structure is a way of organizing data that considers not only the items stored, but also their relationship to each other. Advance knowledge about the relationship between data items allows designing of efficient algorithms for the manipulation of data...
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...Deconstruction is a mode of interpretation which works by a careful and cautious entering of each layer within the story: “ The deconstructive critic seeks to find the thread in the text in question which will unravel it all or the loose stone which will pull down the whole building”. Deconstructive literary criticism uses binary oppositions. Binary oppositions can be defined as “ a pair of related terms or concepts that are opposite in meaning.” “Waiting for Godot”, a classic of modern theatre, is a tragicomedy in two acts which tells the story of two men, Vladimir and Estragon, who are waiting to meet a man named Godot. By using deconstructive literary criticism, the play can be analyzed threw the following binary oppositions: passive/active hopelessness/hope, forgetfulness/remembrance and staying/going. Vladimir and Estragon are in a constant state of waiting for Godot: “Nothing to be done. / I'm beginning to come round to that opinion."(Waiting for Godot). Although they are being passive they try to occupy themselves while waiting for Godot. Derrida states that in binary oppositions there is a unspoken hierarchy in which the first term functions as superior to the second term which is considered inferior: “ Derrida’s procedure is to invert the hierarchy in which the first term functions as privileged and superior and the second term as derivative and inferior. By showing that the primary term can be made out to be derivative from or a special case of the secondary term”...
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...Two-Variable Inequalities Shaun P Bowlin MATH 222 Week 2 Assignment Instructor: Mark Marino February 4, 2014 Two-Variable Inequalities In keeping with the syllabus and overall progression of our study of functions and relationships of variables, this week we took a look at Two-Variable inequalities. The assignment was a real world application of using these types of equations to solve shipping problems. We can use these equations to figure out the solutions to common problems and provide graphs to show a range of correct and incorrect answers that is easier to read. The problem that was given, #68 on pg. 539 shows a graph that illustrates how many TVs and refrigerators a semi-truck can hold at any given time in any combination of the two. By looking at the graph, it shows that you can have a maximum load of 330 TVs with 0 fridges or 110 fridges with 0 TVs. It drawn as a solid line to show that any point on that line could also be a solution, as opposed to a dashed line which would denote not including those values into the solution. Also, because there are so many solutions, the area is shaded to include all viable numbers. You can substitute y for the number of TVs and x for the number of refrigerators for the purpose of simplifying the equation. There are already 2 points on the graph, (0,330) and (110,0) so that is where we will start to compute the slope of the line. m=y1-y2 = 330-0 = 330= 3 x1-x2 0-110 -110 -1 The slope is determined to be -3/1 ...
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