OPERATING SYSTEMS 1 CPU Scheduling What Is In This Chapter? • This chapter is about how to get a process attached to a processor. • It centers around efficient algorithms that perform well. • The design of a scheduler is concerned with making sure all users get their fair share of the resources. 5: CPU-Scheduling 2 CPU Scheduling What Is In This Chapter? • • • • • • • • • Basic Concepts Scheduling Criteria Scheduling Algorithms Multiple-Processor Scheduling
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Basics of Supply-Chain Management IELM 4200‚ Fall 2011 Dr. Emily Au Dept. of IELM‚ HKUST Note02: Basics of OM 1 What is a supply chain? • A supply chain is a goal-oriented network of _________ and ____________ used to deliver goods and services to customers. Fundamental activity: flow of entities through processes Note02: Basics of OM 2 Key performance measures • Throughput (TH): the rate at which entities are processed by the system. • Work in Process (WIP):
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Random Early Detection (RED) [21] has the potential to overcome the problems discovered in Drop Tail. RED is a congestion avoidance algorithm in the network routers/switches proposed by Floyd and Jacobson [13]. Random Early Detect‚ also called Random Early Drop (RED) was designed with the objectives to • minimize packet loss and queuing delay. • congestion avoidance. • avoid global synchronization of sources. • maintain high link utilization. • remove biases against bursty sources. • bound on
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Prominent African-American Mathematicians Wendy A. Tillman Florida Technical College Jesse Ernest Wilkins‚ Jr. exemplifies and is addressed as one of America’s admirable unorthodox mathematicians. He was portrayed as the University of Chicago’s youngest student at the tender age of thirteen. Wilkins proceeded to his education there‚ earning his bachelor‚ master and doctorate degrees in mathematics. When he finished his Ph.D. at 19‚ he was recognized by the national press
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start-up effects. Standard queueing models do not incorporate changes like rush hours – Different models are needed for different times of the day. The “lost customer” rate = λ x Pb • Effective arrival rate = throughput rate = λ x (1-Pb). The key performance measure is Pb the probability that the system is full & arriving customers cannot get in. If Cs is the cost per hour per server‚ & Cw is the cost per hour per customer waiting‚ then the cost per hour of running a queueing system with s servers is
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NORTHCENTRAL UNIVERSITY ASSIGNMENT COVER SHEET Student: Heather W Romine THIS FORM MUST BE COMPLETELY FILLED IN Follow these procedures: If requested by your instructor‚ please include an assignment cover sheet. This will become the first page of your assignment. In addition‚ your assignment header should include your last name‚ first initial‚ course code‚ dash‚ and assignment number. This should be left justified‚ with the page number right justified. For example: RomineHBTM8102-1
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Operations Management - OM726 - SAMPLE Midterm Questions 1. UBurger is a fastfood restaurant whose windows announce its focus on burgers‚ fries‚ and shakes. After perhaps queueing‚ customers place an order with and pay a cashier‚ then await completion of the order. Upon receiving the order‚ 25% of customers depart‚ and the remaining 75% proceed to the seating area‚ where they sit for an average of 40 minutes before departing. The restaurant has 25 seats‚ and assume that they are fully
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Once‚ all villagers decided to pray for rain‚ on the day of the prayer all people were exhilarated to go into the empyrean and ascertain why was there so many people and then the prince Mavis went out and visually perceive what the immensely colossal deal was about. By the time Mavis went outside it starts to get foggy and made the people go inside. Mavis wondered all day what was the immensely colossal fuss about and didn’t do anything to ascertain. Until one day mavis aurally perceived yelling
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Service Outsourcing Yong-Pin Zhou∗ and Z. Justin Ren† February 2‚ 2010 Abstract This article reviews the Operations Management (OM) research on service outsourcing‚ a common practice among today’s businesses. We focus on recent literature in three areas: capacity planning and supplier coordination‚ service outsourcing under information asymmetry‚ and quality concerns. Additionally‚ a mathematical framework is presented that can be used to analyze service outsourcing supply chains. We conclude with
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OPERATIONS RESEARCH INTRODUCTION Operations Research is a unique discipline‚ one of its kinds‚ best of breeds‚ employing several highly developed and advanced analytical techniques which in turn aids in effective decision making. It is often regarded as a sub-field of mathematics. Operations research (OR) are not only deeply involved with making and taking effective decisions. It is also concerned with minimizing losses‚ optimization‚ simulations‚ forecasting and predicting within an organization
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