Entity-Relationship (E/R) Model Dr P Sreenivasa Kumar Professor CS&E Dept I I T Madras Entity-Relationship (E/R) Model Widely used conceptual level data model • proposed by Peter P Chen in 1970s Data model to describe the database system at the requirements collection stage • high level description. • easy to understand for the enterprise managers. • rigorous enough to be used for system building. Concepts available in the model • entities and attributes of entities. • relationships between
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William B. Heard Rigid Body Mechanics William B. Heard Rigid Body Mechanics Mathematics‚ Physics and Applications WILEY-VCH Verlag GmbH & Co. KGaA The Author William B. Heard Alexandria‚ VA USA For a Solutions Manual‚ lecturers should contact the editorial department at physics@wiley-vch.de‚ stating their affiliation and the course in which they wish to use the book All books published by Wiley-VCH are carefully produced. Nevertheless‚ authors‚ editors‚ and publisher do not warrant the information
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Amrita VISHWA VIDYAPEETHAM (University established u/s 3 of UGC Act 1956) Amrita Entrance Examination – Engineering PHYSICS‚ CHEMISTRY & MATHEMATICS Question booklet Version Code Question booklet no. Number of pages Number of questions Time 120 : 3 hrs Max. Marks : 360 Registration number Name of the candidate Signature of the candidate INSTRUCTIONS TO THE CANDIDATES GENERAL 1. Any malpractice or attempt to commit malpractice in the examination hall will lead
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loses. However‚ it is impossible to realize such a transformer in practice. Yet‚ the approximate characteristic of ideal transformer will be used in characterized the practical transformer. N1 : N2 I1 V1 E1 E2 I2 V2 V1 – Primary Voltage V2 – Secondary Voltage E1 – Primary induced Voltage E2 – secondary induced Voltage N1:N2 – Transformer ratio © MRM 05 Transformer Equation Faraday‟s Law states that‚ If the flux passes through a coil of wire‚ a voltage will be induced in the turns
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consists of two grids- • The Urban SEC Grid‚ which uses Education levels and Occupational criteria of the Chief Wage Earner (CWE) of a household as measures to determine socio-economic classification‚ and segments urban India into 7 groups (A1 to E2) and • The Rural SEC Grid‚ which uses Education and Type of House (pucca‚ semi-pucca‚ and katcha) as measures of socio-economic class‚ and segments rural India into 4 groups (R1‚R2‚R3‚R4) This is based on the assumption that higher education leads
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elimination reaction; however we only used the E1 reaction. In the presence of strong acids‚ alcohols protonate to form a good leaving group‚ namely water. Upon loss of a proton to a good leaving group‚ an introduction of unsaturation (a double bond) can be preformed. According to Wikipedia‚ an E2 reaction is typically of secondary and tertiary substituted alkyl halides. An E2 reaction results in formation of a Pi bond. The reason we only used an E1 reaction is because the alcohol functional group
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φp in the core. This flux induces an emf e1 in the coil to counterbalance the applied voltage v1 . This e.m.f. is e1 = N1 dφp . dt Assuming sinusoidal time variation of the flux‚ let φp = Φm sin ωt. Then‚ e1 = N1 ωΦm cos ωt‚ The r.m.s. value of this voltage is given by: E1 = 4.44F N1 Φm Now if there is a secondary coil of N2 turns‚ wound on the same core‚ then by mutual induction an emf e2 is developed therein. The r.m.s. value of this voltage is given by: E2 = 4.44F N2 Φm where Φm is the maximum value
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University of Maryland‚ College Park Department of Chemistry and Biochemistry CHEM 231: Organic Chemistry I‚ Fall 2014 The Highlights Bonnie Dixon TA: Courney Love Office: CHM 2130 email: bdixon1@umd.edu email: clove@umd.edu When/Where: Lecture MWF 9 a.m. – 10 a.m. in CHM 1407 Discussion T/H at 12:30 pm‚ 2 pm‚ and 3:30 pm in the CHM 1228 Course Materials: Organic
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C3 = May to June C4 = June to July C5 = July to August Extra employee E1 = Extra employee on May E2 = Extra employee on June E3 = Extra employee on July E4 = Extra employee on August E5 = Extra employee on September Constraints: Objectives = Minimize $8250(N1+N2+N3+N4+N5)+ $5500 (C1+C2+C3+C4+C5)+ $2250 (E1+E2+E3+E4+E5) Subject to; Laptop Specialist Needed May: N1+C1-E1 = 20 June:
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An Overview of a Compiler - Part 1 Y.N. Srikant Department of Computer Science Indian Institute of Science Bangalore 560 012 NPTEL Course on Compiler Design Y.N. Srikant Compiler Overview Outline of the Lecture 1 2 3 4 5 Compiler overview with block diagram Lexical analysis with LEX Parsing with YACC Semantic analysis with attribute grammars Intermediate code generation with syntax-directed translation Code optimization examples 6 Topics 5 and 6 will be covered in Part
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