Free Data Flow Diagrams Tutorial DFD Tutorial Data Flow Diagrams - Introduction Data flow diagrams can be used to provide a clear representation of any business function. The technique starts with an overall picture of the business and continues by analyzing each of the functional areas of interest. This analysis can be carried out to precisely the level of detail required. The technique exploits a method called top-down expansion to conduct the analysis in a targeted way. [pic] The
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ACTIVITY DIAGRAMS IN UML Activity Diagrams WHAT IS AN ACTIVITY DIAGRAM? Activity diagrams consist of activities‚ states and transitions between activities and states. Activity diagrams combine ideas from event diagrams‚ Petri nets and state modeling techniques An activity diagram is a special case of state charts in which most or all states are activity states and most or all transitions are triggered by the completion of activities in the source state. What is an Activity Diagram? The
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Tutorial Week 7 - Class and Entity-Relationship Diagrams 1 Class Diagrams and Entity Relationship Diagrams (ERD) Class diagrams and ERDs both model the structure of a system. Class diagrams represent the dynamic aspects of a system: both the structural and behavioural features. ERDs‚ depicting only structural features provide a static view of the system. 2 Class Diagrams 2.1 Elements of a class diagram: 2.1.1 class A class is a general concept (represented as a square box). A class defines
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PROPERTY DIAGRAMS OF PURE SUBSTANCES SUBJECT : ENGINEERING THERMODYNAMICS CONTENTS: * Phase and pure substance * Properties of a substance * P-V diagram for a pure substance * P-T diagram for a pure substance * P-V-T surface * T-S diagram for a pure substance * h-s diagram for a pure substance Thermodynamic Properties * Characteristics by which physical properties of system may be described. e.g. pressure‚ volume‚ temperature‚ entropy‚ enthalpy etc
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Network Diagrams and schedule analysis NETWORK DIAGRAMS ARE SCHEMATIC DISPLAYS OF PROJECT SCHEDULE ACTIVITIES AND THE INTERDEPENDENCIES BETWEEN THESE ACTIVITIES. WHEN DEVELOPED PROPERLY‚ THIS GRAPHICAL VIEW OF A PROJECT’S ACTIVITIES CONVEYS CRITICAL SCHEDULE CHARACTERISTICS REQUIRED TO EFFECTIVELY ANALYZE AND ADJUST SCHEDULES – THUS RESULTING IN ACCURATE AND FEASIBLE SCHEDULES. THIS DOCUMENT ADDRESSES WHAT SHOULD BE CONSIDERED IN THE DEVELOPMENT OF A NETWORK DIAGRAM‚ HOW NETWORK DIAGRAMS ARE CREATED
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Venn Diagrams Paper Math 156 Jacqueline Burrell May 13‚ 2012 Evan Schwartz‚ instructor How Venn Diagrams Can Help Students in Math Venn diagrams are used in math to visually assist students when grouping real sets or implied ideas. The diagrams were invented by John Venn and are his only known accomplishments in the science of mathematical logic (Stapel‚ 2012). The diagram begins with all related information and is named the universal set. In this set all the known information pertaining
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Gas Station Project * Main * My Books * C/C++ Programs * Java Programs * Perl/PHP/Ruby Programs * Team Projects * Various Projects Program Description This was a semester-long project from my software engineering class at UNO. The goal of this project was to create a gas station management software package using the classic waterfall development lifecycle. Some of the requirements that needed to be met were: the ability to control gas pumps‚ keep track of in-store
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review the Cause and Effect Diagram‚ better known as the Fishbone Chart‚ why and when you would use this method‚ and examples of real experiences with this diagram. Fishbone Chart A Japanese quality control statistician‚ Dr. Kaoru Ishikawa‚ invented the fishbone diagram. It may be referred to as the cause and effect‚ fishbone‚ or Ishikawa diagram. It is an analysis tool that provides a way to look at effects and causes that contribute to those effects. This diagram has been used in Japan‚ to
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and Diagrams Fortunately‚ Microsoft Office includes tools needed to word-process symbols‚ subscripts‚ equations and diagrams as standard components. These are used to prepare professional-looking documents complete with equations and diagrams when needed. The tools needed for word-processing equations and diagram are common to the Microsoft Office suite of software and can be accessed from Microsoft Word‚ Excel and PowerPoint. The document‚ Using Symbols‚ Subscripts‚ Equations and Diagrams in Reports
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5 Design Decision Styles. What’s Yours? By Jared M. Spool Originally published: Jan 21‚ 2009 In the early days of e-commerce‚ we studied how seasoned hiking customers bought hiking boots online. Two sites in our study‚ L.L. Bean and REI‚ both sold virtually identical boots at the same price with practically the same marketing copy. Yet the customers we studied were far more likely to buy the boots on the REI site than on the L.L. Bean site. Why? Because the product pictures on the REI site showed
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