i JOB SCHEDULING IN NON-MULTIPROGRAMMING ENVIRONMENT Average turn around time computation T=n=0nTix 1n Where: Ti= Fi- Ai * Fi= Finish Time * Ai= Arrival Time * n = no. of jobs Fi= ST+ RT * ST= Start Time * RT= Run Time WTAT= TATACTUAL RUNTIME * WTAT= Weighted turn around time * TAT= Fi- Ai EXAMPLE # 1: FIFO JOB | ARRIVAL TIME | RUN TIME | 1 | 10.00 | 2.00 | 2 | 10.10 | 1
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1. Why is scheduling fairly simple for repetitive systems but fairly complex for job shops? Scheduling for repetitive systems is fairly simple because the activities and equipment used is the same. This goes for high-volume and medium volume systems because the productions are the similar. Scheduling for job shops is more difficult because the products formed are customized or of a personal nature and therefore are not mass produced. Stevenson‚ William J. Operations Management‚ 11th Edition. McGraw-Hill
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------------------------------------------------- Advertising media scheduling Scheduling refers to the pattern of advertising timing‚ represented as plots on a yearly flowchart. These plots indicate the pattern of scheduled times advertising must appear to coincide with favorable selling periods. The classic scheduling models are Continuity‚ Flighting and Pulsing. [edit]Continuity This model is primarily for non-seasonal products‚ yet sometimes for seasonal products. Advertising runs steadily
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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 Real-Time
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… • Resources come in two types: – Preemptive resource: A resources that can be taken away from a process without any ill effects. • Example: memory – Non-preemptive resource: A resource that can not be taken safely away from a process • Example: printer • Deadlocks generally involve non-preemptive resources • Deadlocks can be easily fixed with preemptive resources – Take resources away from one or more deadlocked processes Brian Mitchell (bmitchel@mcs.drexel.edu) Operating Systems 4
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Introduction With CPU’s become faster and more capable of handling many programs/processes at any single time‚ a program is essential where the different processes of programs are manages and all given time to be processed by the CPU. The CPU has its limitations and cannot process anything at once. Enter the process Scheduler. The Scheduler helps the CPU by assigning the next process to be processed by the CPU Body In all the operating systems‚ schedulers are a critical component of the
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each student desires to achieve a good score for each assignment‚ exam‚ project and/or report‚ the whole process adds heavy workload for teachers in order to make their evaluation fair‚ comprehensive‚ and accurate. From the faculty perspective‚ these are necessary to avoid disagreement from students. Grading is an exercise of professional judgment on the part of the part of the teachers. It involves the collection and evaluation on student’s achievement on performance over a specified period of time
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CREW SCHEDULING İ.HAKAN KARAÇİZMELİ GENERAL VIEW • • • • • • CREW SCHEDULING TYPES FLEXIBLE MANAGEMENT STRATEGIES DESCRIPTION OF PROBLEM FORMULATION OF PROBLEM MODEL IN LINGO SOLUTION & ANALYSIS CREW SCHEDULING • Airline Crew Scheduling 1.The most appropriate pairings. 2.Equal workloads. 3.Minimum crew COSTS. • Mass Transit Crew Scheduling 1.Railway track maintenance problems. 2.Mathematical program. 3.Tabu search. • Generic Crew Scheduling 1.Manpower scheduling problems
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Disk scheduling is one of the main responsibilities of Operating System. OS manages hard disk to provide best access time. All major Disk scheduling algorithms incorporate seek time as the only factor for disk scheduling. The second factor rotational delay is ignored by the existing algorithms. This research paper considers both factors‚ Seek Time and Rotational Delay to schedule the disk. Files are the most obvious objects in the operating systems manipulate. Everything is typically stored in files:
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com/pub/behrang-tehrani/62/676/412 Mobile: 001198 912 888123 Profile A highly motivated Industrial Engineer with over 7 years experience delivering outstanding engineering results encompassing continuous improvement‚ project planning and scheduling‚ managing multiple projects. An outcome driven‚ detail focused individual with strong stakeholder management skills Technical skills Software P6‚ MS Project AutoCAD Microsoft office : Excel‚ Word‚ Visio and PowerPoint Project management
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