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 33 for “"single track"”.
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Solving Single-Track Railway Scheduling Problem Using Constraint Programming
The Single Track Railway Scheduling Problem can be modelled as a special case of the Job-Shop Scheduling Problem. This can be achieved by considering the train trips as jobs, which will be scheduled on tracks regarded as resources. A train trip may have many tasks that consist of traversing from …
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Design of a single track, iron, Warren Girder Rail Road Bridge
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1874
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SLM 125 Single Track and Density Cube Characterization for 316L Stainless Steel
… investigates system capabilities when melting single tracks of material. Individual tracks allow for a wide range of scan speeds and laser powers to be utilized and the melt pools analyzed. I discuss how existing studies and simulations can be used to narrow down the selection of potentially …
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Description of a design for a single track railroad bridge of 190 feet span
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1874
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Modelling track maintenance and its effects on the reliability of a single track railroad line
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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A Study of coherent noise in binary Read-Out Systems and its applications to the ATLAS SemiConductor Tracker end-Cap
… new physics. <br>The ATLAS Semi-Conductor Tracker (SCT) is positioned in between the other two tracking detectors (PIXEL and TRT). The SCT will provide precision tracking for charged particles using silicon micro-strip detectors. The perfomance of the SCT system mainly depends on two …
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Inline Coherent Imaging of Laser Additive Manufacturing
… and 35 µm respectively. Powder layer, processed track, and layer quality are assessed in situ using ICI. ICI-based imaging of single track processing of 316L stainless steel powder was investigated under a range of process parameters to determine the influence of processing conditions on melt …
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The Beat's Interior
… through Madmapper. Eight individual parts of a single track are played separately on designated stereos located on the periphery of the room. Changes in the video and music are triggered by GyrOSC data filtered into Max/MSP/Jitter.
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Rebuild performance enhancement using onboard caching and delayed vacation termination in clustered raid 5
… an onboard buffer in the disks, which caches a single track upon arrival of a rebuild request while in rebuild mode. Such an enhancement is proposed, and the architecture is described along with an analysis using the DASim simulation toolkit developed at NJIT. Also proposed is the delayed …
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Heterogeneous Drive Mechanisms for Novel Locomotion in Rough Terrain
… robot composed of a limbed crawler module and a single track drive module, it appeared that the resulting robot did not fit in the regime of differential drive. For that reason the heterogeneous differential drive class was developed. Similarly for the water hammer active tether module this …
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Motion Compensation of Interferometric Synthetic Aperture Radar
… not as effective as using a segmented reference track, coupled with the current lower-order motion compensation algorithm. Attitude variations cause a Doppler shift and are corrected by limiting the processed azimuth bandwidth or by reversing the frequency shift with a range-dependent filter. …
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Is English Really Necessary in French Immersion Classrooms: A Case Study
… Four of the teacher participants work in single-track French immersion school and one worked in a dual-track French immersion school. The data was collected via interviews, reflective journals and still photos of the participants’ classrooms. In brief, the findings of this study …
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Temperature Dependent Robust Control Of Hard Disk Drives Using Parameter Varying Techniques
… transducer. The data is organized into circular tracks that are less than 100 nm wide. Modern HDDs use a dual-state actuator to position the transducer onto these tracks. Since the tracks are extremely narrow, a high performance controller is required to reject disturbances from various sources …
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Energy relaxation in disordered insulators irradiated by ultrafast protons: a multiscale approach
… through the material. Simulations of both a single track in BK7 glass and multiple tracks show that after 5ps the plasma remains highly inhomogeneous, with large gradients remaining in both the carrier density and carrier temperature. This indicates that plasma inhomogeneity must be taken …
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Influence of track arrangement on expanding rail corridor capacity and operations
… particularly along shared rail corridors. While track construction is just one of many alternatives a railroad may employ in expanding practical capacity (and thereby boosting throughput), this practice represents substantial capital investment. With the purpose of helping rail practitioners …
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The impact of operational strategies and new technologies on railroad capacity
… simulation analysis of trains operating on a single-track rail line. The specific types of conflicts and operational factors affecting delay were identified and quantified. Various operational and infrastructure methods to reduce train delay were analyzed and cost benefit analyses were …
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Real time dispatching control in transit systems
… of a rail transit line and avoid busing, single track operation is analyzed in this thesis to deal with major disruptions. Based on the tracks and crossover configuration of the Massachusetts Bay Transportation Authority Red Line, a full analysis of possible strategies is presented which …
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A New Fuzzy Based Stability Index Using Predictive Vehicle Modeling and GPS Data
… in recent years. The system has the ability to track vehicle location, report on diagnostic trouble codes, and keep tabs on maintenance schedules. This helps to improve the safety and productivity of the vehicles and their operators. Additionally, the increasing use of yaw and roll stability …
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