Models of the Atom a) Plum Pudding Model The plum pudding model imagines the atom as a positively charged entity that contains randomly dispersed (negative) electrons within it. It is called the plum pudding model because the electrons in the positively charge cloud resemble raisins in a pudding. Thomson realized that all atoms must contain electrons‚ and since the atoms had a neutral charge‚ they must also include protons. This led him and other to think of the atom as a positively charged
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the OSI model and how it relates to a network. Your response should include answers to the following: • On which layers of the OSI model do WAN protocols operate? • What are some of these protocols? • On which OSI layers do switches and routers operate? • If routers reside at more than one layer‚ what is the difference between the OSI layers? Introduction: The OSI model was introduced in 1984. Although it was designed to be an abstract model‚ the OSI model remains
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18/03/2013 Discuss how the Bradshaw model can be used to model the fluvial characteristics of a river. (10 Marks) The Bradshaw model is a geographical model that shows us how the characteristics of a river changes between upstream to the downstream. The Bradshaw model allows us to see do the river’s characteristics such as‚ average velocity‚ channel depth‚ load quantity and particle size of the load‚ increases or decreases and how much do they change. However this model can’t be exactly right for all
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Essay on Good Role Model All of us would like to think of ourselves as possessing characteristics of a good role model for children. Unfortunately‚ role models are becoming scarce with today’s acceptable tolerance of misguided behaviors. For instance‚ one star athlete is arrested for rape‚ while another is charged with assault for a physical altercation against teammates. If you want to possess qualities of a good role model for children‚ you must first look past these misguided and often out of
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years models have become thinner each year. Models have a weight limit set to ninety pounds between the ages of eighteen and twenty one. Are models becoming too thin in today’s society? Yes‚ models have become too thin over the years‚ the average weight limit for a eighteen year old female is one hundred and twenty-three pounds and the average weight limit for a twenty one year old is one hundred and forty pounds. Models that are at the age of eighteen are thirty-three pounds underweight; models that
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OSI Model Joshua M. Grooms The Open Systems Interconnection model‚ or the OSI model‚ is a way to sub-divide a communications system into smaller‚ more manageable parts known as layers. A layer is a grouping of functions that have similar purpose that either provide services to the layer above it or receives services from the layer below it. On which layer of the OSI model do WAN protocols operate? WANs are managed by the protocols that exist in level 2‚ the Data Link Layer‚ of the OSI
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Introduction The waterfall model is the most common model of all software development life cycle models. It is very simple to understand and use. In a waterfall model‚ each phase must be completed before the next phase can start. At the end of each phase‚ a review takes place to determine if the project is on the right path and whether or not the project should be continued. Here phases do not overlap with each other. Waterfall model is a sequential design process in which progress is seen
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The multifactorial model in health psychology is a leading paradigm that recognizes the multi-faceted nature of illnesses. It is not a clear-cut‚ simple case that a disease is caused by a singular factor. The fact is that decades if not over a century of modern research has led to the recognition that a host of factors‚ as well as their interactions‚ function in illness and health determination (Nevid & Rathus‚ p. 126). These varied factors that the multifactorial model indicates to be the range
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The OSI Model NTC/360 Network & Telecommunications Concepts The OSI Model The Open Systems Interconnection Reference Model (OSI) is the accepted model that describes the how the communications for a computer network should be designed. OSI was developed as part of the Open Systems Interconnect Initiative. Basically‚ OSI divides the functions of a protocol in to seven layers. This makes the reasoning easy to follow and the system much more reliable. The implementation of several OSI layers
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Mathematical Models Contents Definition of Mathematical Model Types of Variables The Mathematical Modeling Cycle Classification of Models 2 Definitions of Mathematical Model Mathematical modeling is the process of creating a mathematical representation of some phenomenon in order to gain a better understanding of that phenomenon. It is a process that attempts to match observation with symbolic statement. A mathematical model uses mathematical language to describe a system. Building a model involves
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