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 116 for “"Processing times"”.
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The effect of estimated processing times versus actual (standard) processing times on various performance measures in a pure job shop
… effect of uncertainty or unreliability in job processing times on designing schedules in a pure job shop environment. Five performance measures were employed in an effort to examine the effect of variations between estimated and actual processing times. These variations are common in job shop …
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Machine scheduling with changing processing times and rate-modifying activities
… models, it is normally assumed that the processing times of jobs are fixed. However, in the recent years, there has been a growing interest in models with variable processing times. Some of the common rationales provided for considering such models, is as follows: the machine conditions …
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Towards the Development of Cost-Effective Decentralized Applications: An Investigation of Transaction Processing Times on the Ethereum Blockchain Platform
… fees) and user experience (transaction processing times). Online services have been developed to provide ÐApp developers with an estimate of how long a transaction will take to be processed given a certain gas price. The accuracy of these estimation services are crucial in the Ethereum …
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An analysis tableau and algorithm for flow-shop makespan minimization
… The third index is used to distinguish processing times and accumulative makespan values. The matrix is as informative as the Gantt Chart and yet offers additional advantages when considering the flow-shop problem, such as: 1. Provides an instructional tableau format which is organized, …
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Evaluation and design of polymer systems for enhanced microwave heating
… evaluated using dielectric testing and monitored processing in a multimode microwave cavity. Dielectric measurements were made using a field perturbation technique and a transmission/reflection technique. The electric loss factor of the epoxy system continuously decreased during cure. Results for …
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The Effect of Differing Degrees of Automation and Reliability on Simulated Luggage Screening Performance
… Function (TAF) analysis was applied to isolate processing time from performance asymptote, which conventional performance measures such as sensitivity and response time do not distinguish one from the other. Sixty participants performed a luggage screening task unaided (manual condition), with …
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Stochastic Cellular Manufacturing System Design and Control
… the impact of uncertainty of demand, processing times and capacity requirements on a cellular manufacturing system (CMS) performance are addressed and stochastic optimization approaches are developed and applied to ten case problems from industrial companies and cellular manufacturing …
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The Single Machine Problem to Minimize Maximum Lateness
… lateness when the jobs may have unequal ready times, processing times, and due dates and pre-emption is not permitted (the n/l/r(,i) (GREATERTHEQ) O/L(,max)) problem. The objective is to improve the efficiency of solution procedures for problems that have a significant number of jobs.
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Large scale queueing systems : asymptotics and insights
… with exponentially distributed inter-arrival and processing times, in the Halfini-Whitt regime. We identify the limiting rate of convergence to steady-state, discover an asymptotic phase transition that occurs w.r.t. this rate, and prove explicit bounds on the distance to stationarity. The results …
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Analytic Evaluation of the Expectation and Variance of Different Performance Measures of a Schedule under Processing Time Variability
… replete with instances of uncertainties in job processing times, machine statuses (up or down), demand fluctuations, due dates of jobs and job priorities. These uncertainties stem from the inability to gather accurate information about the various parameters (e.g., processing times, product …
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Systematic variability in stage-one processing as revealed by eye movements in efficient visual search
… this, such models have concluded that stage-one processing times are invariant. In contrast, our lab recently reported systematic variability in stage-one processing times. In an efficient search task with a fixed target, reaction times were observed to increase logarithmically with set size. In …
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Optimal part delivery dates in small lot stochastic assembly systems
… is the coordination of part deliveries and processing operations. These decisions can have a significant impact on inventory cost and customer service. The problem is especially complex when actual delivery and processing times are stochastic in nature, as is the case in small lot …
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An Analysis of the Two-Machine Static, Stochastic Flowshop With Linear Completion Time Costs
… flowshop with independent, exponential job processing times and linear completion time or penalty costs. The objective was to find a job sequence which minimizes the expected total penalty cost for all the jobs. This performance measure is more complicated and more complete than that used in …
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Development of continuous processing method for pouches in rotary retorts
… processed in existing rotary retorts, increasing processing efficiency at a minimal cost to the processor. The second aim was to determine if the developed retort pouches and stainless steel containers processed in existing continuous rotating retorts can be a viable alternative to pouches …
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Optimal and Approximate Algorithms for the Multiple-Lots-per-Carrier Scheduling and Integrated Automated Material Handling and Lot Scheduling Problems in 300mm Wafer Fabs
… upon the number of machines used, the prevailing processing technology of the machines, and the type of objective functions involved. For the IMHLSP, we study two instances, one with infinite number of vehicles and the other with finite number of vehicles. We begin by introducing a single-machine, …
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Exploration vs. exploitation : reducing uncertainty in operational problems
… collection of jobs that have a-priori uncertain processing times and priorities (modeled as weights). In addition, the service provider must decide how to dynamically allocate capacity between processing jobs and testing jobs to learn more about their respective processing times and weights. We …
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Spatial and temporal factors in visual-auditory interaction
… describes at the first stage the peripheral processing of visual and auditory stimuli as a race. The amount of spatial facilitation at the second stage of combined processing is determined by the outcome of the first stage race. The original Two-Stage Model was extended to two spatial …
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An agent based manufacturing scheduling module for Advanced Planning and Scheduling
… with multiple operations, distinct operation processing times, arrival times, and due dates in a job shop environment. Sequence dependent setups are also considered. The additional constraints of material and resource availability are also taken into consideration. The scheduling is to be …
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A Standalone Wire Database for Routing and Tracing in Xilinx Virtex, Virtex-E, and Virtex-II FPGAs
… they do so at the cost of very significant processing time. A well established alternative scheme is to modify or generate configuration bitstreams directly, resulting in more dynamic designs and shorter processing times. This thesis introduces a complete set of alternate wire databases for …
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Real–Time Imaging of Decimetre–Resolution 3D Seismic Volumes
… studies. In this thesis, I show how simple processing flows built around a combination of standard Chirp/Vibroseis techniques and well known industry methods produce effective and impressive results by considering an object identification case study in a shallow–water, harbour setting (Vardy …
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