BASIC CONCEPTS OF STRESS HANA SUHAIL MASOOD STD. XI A I. MEANING AND DEFINITION:- We generally use the word "stress" when we feel that everything seems to have become too much - we are overloaded and wonder whether we really can cope with the pressures placed upon us. Anything that poses a challenge or a threat to our well-being is considered as stress. Stress is defined as our response to events that disrupt‚ or threaten to disrupt our physical or psychological functioning. It is an internal
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Society The term society is most fundamental to sociology. It is derived from the Latin word socius which means companionship or friendship. Companionship means sociability. According to George Simmel it is this element of sociability which defines the true essence of society. It indicates that man always lives in the company of other people. Man is a social animal said Aristotle centuries ago. Man needs society for his living‚ working and enjoying life. Society h as become an essential condition
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Hierarchal Modulation 1. Theory Wireless transmission of image and video data in hostile mobile environments necessitates for a system which guarantees the quality of the data using effective error protection while at the same time ensures continues video streaming [1]. Unequal Error Protection is a technique which makes use of the fact that not all data in a video stream is equally important [1]. Based on the study first presented in [2]‚ data can be divided into different categories based on
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1. Predict the molecular formula of an alkane with 13 carbon atoms. .................................................................................................................................. [Total 1 mark] 2. Bromobutane‚ CH3CH2CH2CH2Br‚ can be reacted with hot aqueous sodium hydroxide to prepare butan-1-ol. CH3CH2CH2CH2Br + OH– → CH3CH2CH2CH2OH + Br– A student reacted 8.72 g of bromobutane with an excess of OH–. The student produced 4.28 g of butan-1-ol. (i) Calculate the amount
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Journal of Biomaterials Applications http://jba.sagepub.com/ Modulation of Gene Expression of Rabbit Chondrocytes by Dynamic Compression in Polyurethane Scaffolds with Collagen Gel Encapsulation Peng-Yuan Wang‚ Hsiang-Hong Chow‚ Wei-Bor Tsai and Hsu-Wei Fang J Biomater Appl 2009 23: 347 originally published online 12 August 2008 DOI: 10.1177/0885328208093684 The online version of this article can be found at: http://jba.sagepub.com/content/23/4/347 Published by: http://www.sagepublications
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Amplitude Modulation and Angle Modulation Abstract— The aim of this document is to improve understanding of amplitude modulation and angle modulation. We have done this by using Lab view. We have shown 4 types of Amplitude Modulation & 2 types of Angle Modulation. Keywords-amplitude modulation (AM)‚ angle modulation‚ double side band modulation (DSB)‚ double sideband suppressed carrier modulation (DSB-SC)‚ double sideband full carrier modulation (DSB-FC)‚ single side band modulation(SSB)‚ phase
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Chapter 9 MODULATION AND DEMODULATION D ata modulators‚ especially those intended to produce constantenvelope output signals‚ are “high-leverage” components in that even very small deviations from ideal in their behavior can lead to large degradations in overall system performance. Therefore‚ successful simulation of wireless communication systems depends upon the use of modulator models that capture all of the significant deviations from ideal behavior. In the “usual” development of
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Syllabus in BASIC COMPUTER CONCEPTS AND OFFICE PRODUCTIVITY TOOLS CT101 I. Description of the Course: This course covers the areas of information technology and computer literacy including history‚ ethics‚ careers‚ and examples of how computers and communications technologies are being used both in education specifically and society in general. Furthermore‚ the course introduces current system and application programs being used today and provides the learner the
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Pulse-Time Modulation In pulse-modulated systems‚ as in an analog system‚ the intelligence may be impressed on the carrier by varying any of its characteristics. In the preceding paragraphs the method of modulating a pulse train by varying its amplitude was discussed. Time characteristics of pulses may also be modulated with intelligence information. Two time characteristics may be affected: (1) the time duration of the pulses‚ referred to as PULSE-DURATION MODULATION (pdm) or PULSE-WIDTH MODULATION
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tutorial‚ QPSK‚ modulation‚ modulator‚ demodulator‚ demodulation May 01‚ 2002 APPLICATION NOTE 686 QPSK modulation demystified Abstract: Readers are presented with step-by-step derivations showing the operation of QPSK modulation and demodulation. The transition from analog communication to digital has advanced the use of QPSK. Euler’s relation is used to assist analysis of multiplication of sine and cosine signals. A SPICE simulation is used to illustrate QPSK modulation of a 1MHz sine
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