The Iron-Carbon Diagram There are two iron-carbon equilibrium diagrams: - stable iron-graphite Fe-Gr - metastable iron-cementite Fe-Fe3C The stable condition usually takes a very long time to develop. The metastable diagram is of more interest. Fe3C iron carbide called cementite because it is hard. Following phases exist on Fe-Fe3C diagram: - liquid solution of iron and carbon (L) - ferrite ( ) – an interstitial solid solution of carbon in Fe (bcc). At room temperature ferrite is ductile but
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as Phase Diagrams By _________________ _________________ Material Science Lab #11 Report Introduction The purpose of this lab is to obtain the cooling curves for tin‚ lead and various alloys of these two metals. A phase diagram will be generated from these cooling curves. When a material is heated by adding energy at a constant rate‚ the temperature of the material will increase linearly with time‚ provided a phase transformation does not occur. As temperature of the sample becomes
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The WWW‚ HTTP‚ Browsers‚ and the Web Standards What is WWW? - It stands for the World Wide Web‚ which is most often called the web. - The web is a network of computers all over the world. - All the computers that are connected to the web uses a protocol called HTTP to communicate with each other. What is HTTP? - It stands for the Hypertext Transfer Protocol. - It is a networking protocol for distributed‚ collaborative‚ and hypermedia information systems. - It is
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1/9/2013 Mass and Haul Diagram HAUL : product of earth excavated and the distance it was transported to form an embankment or to be disposed as waste. unit: meter – station (metric) = 1 m3 to be transported FREE HAUL DISTANCE (FHD) : fixed distance within which the hauling of material is not paid for but it is assumed to be included in the cost of excavation. OVERHAUL (OH) : product of volume in excess of the free haul mass and the length of overhaul in which payment is already required. LENGTH
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Situation Analysis Background information With the developing of Web 2.0‚ more and more investors tried to focus on the usage of Internet. Unlike the traditional software‚ more kinds of operations can be executed based on Internet‚ such as Open Source Software (OSS)‚ Cloud Computing‚ Software as a service (SaaS) and Virtualization. SaaS is a new type of software applied mode which grows up in the 21th century. It has the similar meaning with the terms ASP (application service provider) or HSV
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Online Auction System Use Case and Misuse Case Diagrams Mounika Challagundla‚ Graduate Student Dr. Natarajan Meghanathan‚ Associate Professor Department of Computer Science Jackson State University‚ Jackson‚ MS 39217‚ USA use case description • Registration: Anyone who want to participate in auction first they have to register to the system. • Login: The user will provide login details in order to access anything. • Post items: Once registered as a seller‚ the seller can start posting his
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Exercise 1 [AON] Using the table below‚ draw the network diagram and answer the questions. When you have completed answering the questions‚ do a forward/backward pass. Activity Start C B P A U T R N End Predecessor Start Start Start C‚ B‚ P P A A U T‚ R‚ N Estimate in weeks 0 6 4 3 7 4 2 3 6 0 . How many paths are in the network‚ and what are they? 2. What is the critical path and its duration? 3. What is the float on activity U? 4. What is the impact to the project if activity
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organism from the food web? The extinction or removal of an organism from a food web can affect different organisms directly or indirectly‚ depending on the trophic level the organism is and in what role they play in the food web‚ if it is carnivore‚ herbivore‚ omnivore‚ etc. Extinction has also been important for evolution in food webs. Some food webs are generated from the reaction with repeated extinctions‚ and the extinction rate is affected by food web structure‚ and food web structure is a
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follow in order to remain active. Security Web Security Guard is an application developed by Crawler that prevents the user from entering potentially dangerous Web sites that may cause adware‚ viruses‚ spyware‚ or spam.Web Security Guard informs of potentially dangerous websites by displaying information and user reviews before entering websites.It uses a database of web site ratings and reviews provided by the users. Crawler Toolbar comes with Web Security Guard keeping it up to date and providing
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mywbut.com Data Flow Diagrams (DFDs) 1 mywbut.com Specific Instructional Objectives At the end of this lesson the student will be able to: • • • Identify the activities carried out during the structured analysis phase. Explain what a DFD is. Explain why constructing DFDs are important in arriving at a good software design. • Explain what a data dictionary is. • Explain the importance of data dictionary. • Identify whether a DFD is balanced. Structured Analysis Structured analysis
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