Article 1 Title : Online Social Networking and Addiction Writer(s) : Daria J. Kuss and Mark D. Griffiths Source : www.mdpi.com/journal/ijerph Social Networking Sites (SNS) or in this case Facebook has been causing serious addiction amongst individuals these days. This situation is no longer seen as an addiction but as a serious mental health issue. People these days spend majority of their time online by surfing Facebook in their virtual community. Psychologists describe
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The first service user to be examined is Mr Winston Johnson. He is a 74 years old retired lorry driver and a native of Guyana. His GP has diagnosed him as having the early signs of a dementia type illness with intermittent mental capacity. His wife‚ Pearl worries about leaving Winston on his own because of his forgetfulness. Winston’s two older children‚ Deborah and Anthony have expressed their opinion that Winston may be better off in a residential home to lessen the pressure on Pearl. ‘Dementia
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BASIC DIODE ELECTRONICS INTRODUCTION TO DIODES The p-n Junction The p-n junction is a homojunction between a p-type and an n-type semiconductor. It acts as a diode‚ which can serve in electronics as a rectifier‚ logic gate‚ voltage regulator (Zener diode)‚ switching or tuner (varactor diode); and in optoelectronics as a light-emitting diode (LED)‚ laser diode‚ photodetector‚ or solar cell. In a relatively simplified view of semiconductor materials‚ we can envision a semiconductor as having two
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Msc in Economics and Business Administration Master Thesis MSc in Finance Valuation of Pfizer Inc. and analysis of new drug development project using a real option approach. Author: Valdis Cvetkovs Supervisor: Peter Lochte Jorgensen April 2011 Aarhus Abstract This thesis investigates the world’s largest pharmaceutical company Pfizer Inc. from strategic and financial viewpoint in order to determine companies’ fair market value. The external analysis researches industry and global economic situation
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Timeline of materials technology BC • 29‚000–25‚000 BC – First pottery appears • 3rd millennium BC – Copper metallurgy is invented and copper is used for ornamentation • 2nd millennium BC – Bronze is used for weapons and armour • 16th century BC – The Hittites develop crude iron metallurgy • 13th century BC – Invention of steel when iron and charcoal are combined properly • 10th century BC – Glass production begins in ancient Near East • 1st millennium BC – Pewter beginning to be used in
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PART I CHAPTER III DIODES APPLICATIONS –SPECIAL PURPOSE DIODES OBJECTIVES 3.1 I-V- characteristics of normal and zener diode and measurement of static and dynamic resistance 3.2 I-V characteristics on CRO 3.3 Clipping circuits using diodes 3.4 Clamping circuits using diodes 3.5 Diode as a voltage multiplier 3.6 Diode used as a meter over current protection INTRODUCTION SEMICONDUCTORS Semiconductors are materials which are used to manufacture all electronic and optoelectronic devices
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TEST BANK Michael J. Quinn 23 January 2012 Copyright © 2013 by Pearson Education. All rights reserved. Multiple-choice Questions For each of the following questions‚ choose the letter of the one best response. Chapter 1 1. The two principal catalysts for the Information Age have been a) books and pamphlets. b) computers and communication networks. c) movie theaters and public parks. d) newspapers and magazines. e) radio and television. 2. Which statement best supports the conclusion
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In electronics‚ an integrated circuit (also known as IC‚ microcircuit‚ microchip‚ silicon chip‚ or chip) is a miniaturized electronic circuit (consisting mainly of semiconductor devices‚ as well as passive components) that has been manufactured in the surface of a thin substrate of semiconductor material. Integrated circuits are used in almost all electronic equipment in use today and have revolutionized the world of electronics. A hybrid integrated circuit is a miniaturized electronic circuit constructed
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Test Item File Electronic Devices and Circuit Theory‚ 9e (Boylestad) Chapter 1: Semiconductor Diodes 1) An intrinsic semiconductor is one that is as pure as present-day technology can make it. 2) Electrons are the minority carriers in an n-type material. 3) Holes are the majority carriers in a p-type material. 4) The quantum-Volt (qV) is the unit of measurement for electron energy. 5) A free electron has a higher energy state than any that are bound to their nucleus.
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Introduction Aim of the project Block diagram Components used Rectifier diodes Transistor 78XX regulator IC NE 555 Timer IC Resistor Capacitor Relay Circuit diagram Circuit operation Applications Advantages Disadvantages Limitation Future scope Conclusion Bibliography Introduction: We have seen many more times that our street light were turned On even inday time also. This shows that we are wasting much power even it may be saved and supplied for any crop fields for several hours. Here
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