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 21 for “"Coasting"”.
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Coasting '71: a memoir
<p>This is a Creative Non-Fiction collection of essays is a memoir that follow the adventures of two young men as they travel from Provincetown, Massachusetts across Eastern Canada, across the Southern United States and finally up the Pacific Coast in an aborted attempt to drive to Alaska seeking …
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Design of Atlantic coasting schooner with diesel engine
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Naval Architecture and Marine Engineering, 1921.
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Orbital transfer trajectory optimization
… to this by developing control laws for optimal coasting and for variable specific impulse at constant power. The Hamiltonian method is used to develop the optimal control laws and physical interpretations are given to each term in the Hamiltonian. Application of the optimal coasting control law …
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Energy Modeling of Deceleration Strategies for Electric Vehicles
… battery pack while the vehicle is decelerating. Coasting is an alternative strategy that minimizes energy consumption by decelerating the vehicle using only road load. This work refines a battery electric vehicle model to assess regen, coasting, and other deceleration strategies. A road load …
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Laser cooling of fast stored ion beams to extreme phase-space densities
… ordering in the ion beam. Laser cooling of a coasting beam in an optical molasses is demonstrated. For the first time, true 3D laser cooling of a coasting beam has been realized.
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Simulation of energy efficiency improvements on commuter railways
… industry proven methods include regeneration, coasting allowances and driver training. The use of a simulator allows railway organisations to understand and quantify the benefits of the various methods for their particular rolling stock and networks. This thesis describes the development of a …
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Re-investigating coastal trade: the ports of the Bristol Channel and the Severn Estuary, c.1695 - c.1704
… upon the port of Bristol. It acknowledges that coasting formed a vital link in the economy of pre-industrial England and Wales. However, coasting has been seen as the eternally poor relation of international and transoceanic commerce in studies of economic growth, urban development, and …
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Pitch-Control Predictor-Corrector and Neural Network Ascent Guidance
… 50 x 100 nmi orbit at 375,000 ft altitude, coasting toward apogee at a positive inertial flight path angle. Three degree-of-freedom trajectory analysis is performed using the Program to Optimize Simulated Trajectories (POST2). Results of Monte Carlo simulations including uncertainties in …
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Optimal train control on various track alignments considering speed and schedule adherence constraints
… (e,g., duration of acceleration and cruising, coasting position, braking position, etc.) as well as operational constraints (e.g., track alignment, speed limit, minimum travel time, etc.) The applicability of the developed methodology is demonstrated with geographic data of two real world rail …
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Fuel optimal rendezvous including a radial constraint
… in orbit is examined using thrust-impulses and coasting arcs. Necessary conditions for the optimality of fuel-optimal rendezvous with and without radial constraints are derived. These conditions are then used to verify the optimality of trajectories obtained from a parameter-optimization …
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PERCEPTIONS OF OPEN-ENDED ART BY FOURTH-GRADE STUDENTS AND THEIR TEACHER
… were identified as not engaged and seemed to be coasting. The teacher researcher decided to try something new to engage all fourth-grade students. She decided to present her students with a constructivist approach to solving the problem of stacks of unwanted phonebooks from the district office. …
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Inverse problems in elliptic charged-particle beams
… systems are described for elliptic beams in coasting, accelerating, and compressing regions with analytic prescriptions for the applied electric and magnetic fields required to maintain a laminar flow profile for particles within the beam. Numerical phase-space evolution and 3D simulations …
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Pre-industrial trade on the River Severn: a computer-aided study of the Gloucester port books, c1640-c1770
… a wide range of themes. Quantitative studies of coasting trade have been limited by difficulties in utilising Port Books, and have not been undertaken for inland transport. Chapter 1 assesses previous uses of Port Books and provides a detailed evaluation of the coastal Port Books for Gloucester …
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Functional Goods and Fancies: The Production and Consumption of Consumer Goods in Northumberland, Newcastle upon Tyne and Durham c. 1680-1780
… to other region’s in Britain through the coasting trade. It details the expansion of vessels destined for the Tyne and variety of products entering Newcastle, especially those from London. Chapter Six focuses on retailing, the lynch-pin connecting production and consumption. It traces the …
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Miniaturization, Packaging, and Thermal Analysis of Power Electronics Modules
… and components on another board (such as the coasting diodes) suffer from severe parasitic effects, thus affecting the overall electrical performance of the system. A conceivable solution to this problem is the design and construction of a power electronics module which would incorporate all …
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Nematic liquid crystals for nano-structured organic photovoltaic
… Chlorobenzene shows the best performance as coasting solvent. The annealing temperature is significant in controlling the nanoscale morphology and the phase separation of an intermixed network of the blends.We successfully demonstrate photovoltaic performance using blends of our novel donors …
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Reclosing transients in standard and premium efficiency induction machines in the presence of voltage unbalance
… impact of restarting an induction machine, while coasting, was investigated in this study. When restarting an induction machine, high peaking current and torque transients appear. As a result, possible damage to the rotor shaft could occur together with a destabilising of the power system which …
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Spacecraft trajectory optimization using many embedded Lambert problems
… in between segments are the control. These coasting arcs and impulsive maneuvers in between segments are defined collectively as a coast-impulse model, similar to the well-known Sims-Flanagan model. Use of EBVPs is not new to spacecraft trajectory optimization, extensively used in primer …
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Control Hierarchies for Critical Infrastructures in Smart Grid Using Reinforcement Learning and Metaheuristic Optimization
… by supplying energy during acceleration and coasting of the trains, and replenish their energy by recapturing the regenerative braking energy during deceleration of the same.</p> <p>The trains consume/regenerate energy at a very high rate during acceleration/deceleration, thereby requiring …
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Vehicle Inertia Impact on Fuel Consumption of Conventional and Hybrid Electric Vehicles Using Acceleration and Coast Driving Strategy
In the past few years, the price of petroleum based fuels, especially vehicle fuels such as gasoline and diesel, has been increasing at a significant rate. Consequently, there is much more consumer interest related to reducing fuel consumption for conventional vehicles and hybrid electric vehicles …
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