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 25 for “"Demand and capacity"”.
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Airport demand and capacity modeling for flow management analysis
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1994.
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Demand and Capacity Problems in the Next Generation Air Transportation System
… two main aspects of air transportation system, demand and capacity. The first study aims to estimate the potential market for Zip Vehicles, an advanced commuter type of aircraft equipped with automation and electric propulsion technologies. A Multinomial Logit Model was developed to estimate the …
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Redundancy in Steel Moment Frame Systems Under Seismic Excitations
… acceleration (BSA) is used to measure both demand and capacity of a given building; (2) the demand and capacity analyses of a building are performed, from which the probabilistic demand curves and the distribution of capacity are constructed; (3) both aleatory and epistemic uncertainties in …
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Reliability Evaluation and Damage Reduction of Woodframe Buildings Under Seismic Loads
… in terms of both maximum story drift ratio and building damage index for each of the six selected buildings, with uncertainties in both demand and capacity accounted for The adequacy of existing buildings and current design is examined in terms of building damage and the corresponding …
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Structural Redundancy of Dual and Steel Moment Frame Systems Under Seismic Excitation
… factor is then compared with the reliability and redundancy factor (rho) in the 1996 SEAOC Blue Book, NEHRP 97, and UBC 97, which depends on the system configuration only. The results show the inadequacies of the latter approach in describing the redundancy of a building system due to its …
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Probabilistic capacity and seismic demand models and fragility estimates for reinforced concrete buildings based on three-dimensional analyses
… The fragility estimates are conducted using the demand and capacity models typically for the 3D responses. The demand models expressed in terms of drift are developed as functions of the spectral accelerations in the two planar directions. The demand prediction is compared in a probabilistic …
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Distribution network optimization in the uniform rental industry
… various products move across different paths and transportation modes within one network. To address the challenges posed by this complexity, this thesis develops a mixed integer linear programming model for a uniform rental company. The company's product families are routed through …
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Extracting capacity metrics for General Aviation airports from ADS-B data
… the US, with over 5000 small airports existing and operating across the country. Serving almost exclusively small aircraft, these airports have a unique activity profile, compared to larger commercial airports. Like their larger cousins, they occasionally see the need to apply for federal …
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An optimal stock building strategy in a manufacturing company
This thesis aims to tackle a demand seasonality problem by building either work-in-process inventory or finished goods inventory before the peak season. A linear programming algorithm is developed to determine the optimal way for stock building in order to satisfy the demand with minimum inventory …
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Airport Performance Metrics Analysis: Application to Terminal Airspace, Deicing, and Throughput
… various elements of the aviation system, the FAA and the International Civil Aviation Organization (ICAO) developed nineteen key performance indicators (KPIs). This dissertation contains three research studies, each written in journal format, addressing select KPIs. These studies aim at answering …
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The dynamics of corporate diversification. A System Dynamics study of the effectiveness of diversification as a corporate growth strategy for leading firm in the U. K. Cement Industry.
This thesis describes and discusses the application of System Dynamics methodology as a basis for formulating diversification strategy and control policies of the largest diversifying cement company in the 'United Kingdom. The problems of the industry such as stagnant growth, cyclic and seasonal …
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Optimal allocation of surgical services
… hospitals into larger care organizations and a renewed focus on the delivery of affordable care. In order for the Beth Israel Deaconess Medical Center (BIDMc) to respond and adapt to this changing landscape it will be critical to not only understand demand and capacity across the …
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Modeling and Control of Queuing Networks: Applications to Airport Surface Operations
… results in increased flight delays, fuel burn and emissions. There is consequently a need to accurately model airport traffic operations and to design control algorithms that mitigate airport congestion. In this thesis, we propose a new class of queuing network models of airport surface …
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Large-scale optimization in online-retail inventory management
… the related decisions of inventory placement and inventory replenishment in online retail. The placement decision focuses on the selection of fulfillment centers in which to place items, while the replenishment decision concerns the amount of inventory to order for each item. In contrast with …
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A queuing model of airport congestion and policy implications at JFK and EWR
… weakly constrained. This largely unregulated demand combined with capacity constraints led to record delay levels in 2007, whose costs were estimated as in excess of $30 billion a year. Mitigating airport congestion may be achieved through demand management measures. Quantifying the benefits …
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Approximate solutions for multi-server queuing systems with Erlangian service times and an application to air traffic management
… very general conditions such as time-varying demand and capacity, and high utilization, including occasional oversaturation. Conditions such as these cannot be addressed with existing methodologies. We focus on M(t)/G(t)/n(t)/n(t) + q systems that can be approximated fairly well by …
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Essays on Electricity and Sequential Auctions
… markets as oligopolies facing uncertain demand and ""capacity constraints"" in which each firm chooses as its strategy a ""supply function"" introduced by Klemperer and Meyer. To facilitate the computation of optimal strategies, we consider piecewise linear bid (or supply) functions, and …
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Analysis of airline schedule padding on U.S. domestic routes
… of variability. These can be weather conditions and airspace congestion, imbalances between airport demand and capacity, fleet and crew availability, technical failures and delays in maintenance, and other airline operations such as boarding and fueling. The main objective of this thesis is to …
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Collaborative En Route Airspace Management Considering Stochastic Demand, Capacity, and Weather Conditions
… much of the day from traffic volume, weather, and other airspace restrictions. The projected growth in demand for airspace is expected to worsen this congestion while reducing system efficiency and safety. This dissertation focuses on providing methods to analyze en route airspace congestion …
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Improved ground motion intensity measures for reliability-based demand analysis of structures
… reliability of a structure (due to the future random earthquakes) at a site. For that purpose, Probabilistic Seismic Demand Analysis (PSDA) is utilized as a tool to estimate the Mean Annual Frequency (MAF) of exceeding a specified value of a structural Engineering Demand Parameter (EDP). This …
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