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.
Results
Showing 1 to 20 of 52 for “"integer programming model"”.
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AN INTEGER PROGRAMMING MODEL FOR DYNAMIC TAXI-SHARING CONSIDERING PROVIDER PROFIT
This thesis proposes an integer programming model for Dynamic Taxi-Sharing (DTS), which allows two groups of taxi users to ride on the same taxi together. The model matches taxi drivers and user pairs in certain sequences with the goal of maximizing taxi providers’ profit. We also develop a DTS …
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A Comprehensive Mixed-Integer Programming Model to Optimize the Performance of Freeway Service Patrol Programs
… for this purpose, and a few previous models typically tried to design these elements distinctly while they are strictly interrelated. Therefore, our research presents a comprehensive mixed-integer programming model to design the network for freeway service patrol programs. This model …
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An integer programming clustering approach with application to recommendation systems
… on finding clusters of similar customers using integer programming model which is to find the minimal number of clusters subjected to several similarity measures. The proposed recommendation method is compared with collaborative filtering, and the experimental results show that it provides …
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A Model for the Design of Distributed Databases (Concurrency Control, Update Synchronization, File Allocation)
This research focuses on developing a model to solve the File Allocation Problem (FAP). The model integrates two major design issues namely Concurrency Control and Data Distribution. The central node locking mechanism is incorporated in developing a non linear integer programming model. Two …
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Value stream mapping and WIP and lead time optimization for a make-to-order system
… in WIP and lead time was identified. Simulation models were used, on the make- to-order, serial production system to test three potential solutions to the problem. The models used showed great promise for reduction in WIP and the lead time for both the priority and ordinary products. The role of …
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Exact and Inexact Methods for Selecting Views and Indexes for OLAP Performance Improvement
… specific contributions are: (1) we introduce an integer programming model for OLAP view- and index-selection problem; (2) we develop an algorithm that effectively and efficiently prunes the space of potentially beneficial views and indexes of the problem, and provide formal proofs that our …
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IBC management : an application of WIP control for a pharmaceutical company
… of the five IBC drivers were analyzed in detail. Integer programming model, deterministic simulation method and Buzacott's formula for zero buffer line were used to solve the problems associated with the three IBC drivers to minimize the required number of the 1 800L IBCs. Cleaning schedule for …
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Improving Supply Chain Resiliency through Solar Panel Delivery Optimization
… thesis presents and implements a novel mixed integer programming model to determine the optimal schedule for delivering solar panels to project sites. The model abstracts impactful and quantifiable costs and minimizes them to propose a realistic solution. It produces a schedule in …
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Lot streaming in a two-stage assembly system and a hybrid flow shop
… while the direct solution by CPLEX of a mixed integer programming model of the problem requires much larger CPU times. For the hybrid flow shop lot streaming problem, the machine configuration that we consider consists of one machine at Stage 1 and two machines at Stage 2 (designated as 1+2 …
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Optimal depot level maintenance planning
… the Marine Corps. However, there is currently no model or other management tool available to analyze the effects of various maintenance policies. The goal of this thesis is to develop such a model to aid the Marine Corps in establishing an effective and efficient maintenance policy for the tank …
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Heterogeneous defensive naval weapon assignment to swarming threats in real-time
… defensive capabilities and threat profiles. The model consists of a pre-processing algorithm and a reward-based mixed-integer programming model that takes as inputs the available defensive weapon system capabilities and incoming target information and outputs a recommended engagement profile. …
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Impact of budget uncertainty on network-level pavement condition : a robust optimization approach
… budget. In this study a multi-period linear integer programming model is proposed with its robust counterpart considering uncertain maintenance and rehabilitation budget. The proposed model is able to provide a maintenance and rehabilitation program for the pavement network that results in …
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Optimal class scheduling subject to professors' preferences
… utility and is defined from a corresponding integer programming model in operations research which (1) is solved for ordinal cost factors and (2) serves as the problem's theoretical starting point. It is suggested herein that one start with a mathematical formulation that if solved in an …
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An integer programming formulation for the music school timetabling problem
… which is very time consuming. In this thesis a model will be presented that is intended to solve the music school timetabling problem, assigning students and teachers to courses and classrooms. This project is done in cooperation with the music school Tónmenntaskóli Reykjavíkur which is …
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Optimising television programming and scheduling
… have “disturbed” the traditional economic models supporting the media industry over the last decade, with viewers migrating from traditional media outlets to digital ones causing a severe drop in revenues. Consequently, the competition for viewers’ ratings has intensified dramatically over …
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Quantitative Methods For Select Problems In Facility Location And Facility Logistics
… of time required to complete work. A mixed integer programming model is presented and a heuristic is developed for solving the problem. The second problem extends the first parallel scheduling problem to include two additional practical considerations. The first is a setup time that occurs …
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Scheduling fuel-shuffling operations for a nuclear power reactor
… These groups are also combined, and an integer programming model for this integration process is presented. Three sample shuffles are considered, and an analysis of effective scheduling techniques is conducted for a representative set of fuel-handling equipment. Efforts are made to …
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Analysis of an international distribution hub for fast moving consumer goods
… and handling costs. We developed a mixed integer programming model to determine the benefits of adding hub capability to Consumer Co.'s Northwest Latin American import supply chain. Consumer Co.'s NWLA division imports products from Argentina, Brazil and Mexico to eleven countries within …
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Multi-objective constrained optimization for decision making and optimization for system architectures
… new methods to solve three problems: 1) how to model and solve decision-making problems, 2) how to translate between a graphical representation of systems and a matrix representation of systems, and 3) how to cluster single and multiple Design Structure Matrices (DSM). To solve the first …
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