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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------------------------------------------------- A Study of Factors Influencing Energy Conservation Behavior Richard Semenik‚ University of Utah Russell Belk‚ University of Utah John Painter‚ University of Utah ABSTRACT - Previous research on factors that influence energy conservation behavior have almost without exception been restricted to demographic investigations using bivariate analyses. The present study attempts to go beyond prior research by using a richer set of non-demographic predictors
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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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Work Renewable and Non-renewable energy sources &Fuels: Renewable energy comes from natural sources that are constantly and sustainably replenished. The most common renewable energy sources are biomass‚ hydroelectric‚ geothermal‚ wind power and solar power. Sunlight is the source of most renewable energy power; the sun can be used to produce solar energy which is electricity for heating‚ cooling‚ lighting homes and transportation. [1] Non-renewable energy is energy that comes from the ground and
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Use Psychological theories to explain aggressive behaviour. Describe three method’s a coach might use to eliminate aggressive tendencies of performers and to encourage an active and healthy lifestyle. (6 Marks) Aggression is the attempt to harm outside the rules of the game. There are many different theories of how aggression is formed. Instinct theory was proposed by Freud and is the trait view of behavior and shows the drawbacks of this perspective‚ that behaviour is at all
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| Does God Exist? | Philosophy 101 | Index 1882 | BCCC User | 11/18/2011 | | Outline 1. Introduction * Does God exist? The complexity of our planet points to a deliberate Designer who not only created our universe‚ but sustains it today. * The existence of God cannot be proved or disproved. The Bible says that we must accept by faith the fact that God exists: “And without faith it is impossible to please God‚ because anyone who comes to Him must believe that He
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Why do farmers use drones? When the farmers use drones it helps check if animals are on the land. It it helps spray the chemicals and the drones help check on the crops. A drone does not cost as much money as having to buy a plane and to pay the person who flys the plane would. The drones help check on there animals. Accordiing to the article "Farmer Drones"‚"Roger Johnson is president of the U.S. National Farmers Union. His father used to fly a plane over his ranch in North Dakota to spot
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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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Elasticity is a measure of responsiveness. It shows us how much something changes when there is another change in one of the other variables that determines it. There are three elasticities of demand that we consider‚ price elasticity of demand (PED)‚ income elasticity of demand (YED) and cross elasticity of demand (XED). An important aspect of a product’s demand curve is how much the quantity demanded changes when price is changed. The economic measure of this response in the price elasticity
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senses‚ dizziness‚ slurred speech‚ disorientation‚ loss of physical coordination‚ muscle weakness‚ belligerence or apathy‚ and impaired judgment/ mental functioning that appear to be similar to alcohol intoxication. (Hedl‚ Inhalant Abuse) Why do people use inhalants? Inhalants are found in over 1‚400 products that
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