Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 53 for “"flow time"”.
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Analysis of variance impact on manufacturing flow time
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1991, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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Implementing flow time reduction using process mapping and innovation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1994.
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Online scheduling algorithms for average flow time and its variants
… send their requests to the server(s) over time, and the server needs to satisfy the requests using its resources. This setting is prevalent in many applications including multiuser operating systems, web servers, database servers, and so on. A natural objective for each client is to …
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Supply chain strategy for a compressed flow-time retrofitting manufacturing process
In today's competitive environment, a compressed flow-time enables companies to present a strong value proposition especially for products with a high asset value. In a retrofitting manufacturing process the state of incoming product and customer requirements is unpredictable. This results in long …
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Flow Shop Sequencing With Unequal Ready Times to Minimize Mean Flow Time
Made available in DSpace on 2014-12-13T19:55:31Z (GMT). No. of bitstreams: 1 7915337.pdf: 4561714 bytes, checksum: 1d16fc34b5f5bc98b133364e7128a789 (MD5) Previous issue date: 1979
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Development of passenger flow time (PFT) model for light rail transit (LRT) users at KL Sentral Malaysia
Dwell time is a key parameter of system performance, service reliability and quality in any mode of public transportation and represents a significant portion of the total trip time along a serviced transit line. One major component of dwell times is the alighting and boarding time of passengers, …
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Process Improvement in Phlebotomy
… at the lab. The performance measurement is the flow time of the process, which reflects concerns and interests of both the hospital and the patients. Three popular operational methodologies are applied to reduce the flow time and improve the process: DMAIC from Six Sigma, lean principles and …
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Design of Scheduling Algorithms Using Game Theoretic Ideas
… thesis, we design algorithms that optimize {\em flow-time} (or delay) of jobs for scheduling problems that arise in a wide range of applications. We consider the classical model of unrelated machine scheduling and resolve several long standing open problems; we introduce new models that capture …
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A study of three classes of sequencing rules in a simulated job shop
… Come First Serve (FCFS), Shortest Processing Time (SPT), and Probability Sequencing (PS). Due date performance, number of jobs processed in a simulated interval, number of jobs late, mean lateness and in-process inventory level were the measures of performance used. The results indicated that …
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Online scheduling algorithms for broadcasting and general cost functions
… are a set of jobs that are sent by clients over time to a sever. There is a scheduler at the sever that determines how the jobs should be processed. The goal of the scheduler is to process the jobs in a way that optimizes the quality of service given to the clients. The quality of service is …
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Scheduling inbound calls in call centers
… objective functions of 1) minimizing the Total Flow Time (TFT), 2) minimizing the Maximum Flow Time (MFT) of any call, and 3) minimizing the Maximum Deviation of Cumulative Assigned Workload (MDCAW) for CSRs. We also report the results of a numerical experiment designed to evaluate under what …
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Job Sequencing & WIP level determination in a cyclic CONWIP Flowshop with Blocking
… earlier studies namely; stochastic processing times and limited intermediate storage. One of the main issues in the design of a CONWIP system is the WIP level 'M', to be maintained. This research proposes an iterative procedure to determine this optimal level. The second main issue is the …
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Optimization of shake inspections
… opportunities to improve quality and reduce flow time are being thoroughly investigated. This thesis contributes to the investigation by focusing on improving the inspection process through a prototype computer data collection tool and the formation of a corrective action team.
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A comparative evaluation of surface runoff models and methods on small developing watersheds in Northern Virginia
… Hydrographs are evaluated with respect to peak flow, time to peak flow, time base, volume, and overall shape. Statistical measures are introduced to quantitatively test the modeled hydrograph to a baseline reference hydrograph. The statistics yield many errors with the models being evaluated. A …
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Improving the efficiency of an automated manufacturing system through a tri-part approach
… this study is highlighted by non-trivial travel time between stations. We build a simulation model in Matlab to compare different assignment policies. The objective is to find the assignment policy that balances the station load, decreases the flow time for jobs, and reduces the rejection or …
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Scheduling and Admission Control
… is measured with makespan, we give linear-time algorithms to compute all non-dominated solutions for the general uniprocessor problem and for the multiprocessor problem when every job requires the same amount of work. We also show that the multiprocessor problem becomes NP-hard when jobs …
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Sequencing policy for a CONWIP production system
… are throughput, optimum WIP level (m*), and flow time. Analysis of the effects of sequence dependent bottlenecks on system performance is provided. A procedure is presented to determine a lower bound for (m*) given the product mix. A method that determines (m*) given the sequence of jobs is …
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Time-domain developments in the singularity expansion method
… of the best properties produced by SOT (low flow time) and SLACK (low tardiness). It should be noted that even though such a system could be viewed as complex and expensive,it is not. Computational requirement will be slightly increased, but no more data is required than is expected for a …
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Application of two complementary sequencing rules to control the job shop by switching
… of the best properties produced by SOT (low flow time) and SLACK (low tardiness). It should be noted that even though such a system could be viewed as complex and expensive,it is not. Computational requirement will be slightly increased, but no more data is required than is expected for a …
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Bi-criteria Scheduling Problems on Parallel Machines
… more efficiently and in reasonable amount of time and with little compromise on the optimality of the solutions obtained. Two classes of problems are considered. The first class consists of scheduling unit duration tasks on parallel machines. Various combinations of primary and secondary …
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