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 72 for “"Power balance"”.
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Ázsiai erőegyensúly = Power Balance in Asia
Kína felemelkedése és a Csendes-óceán térségében egyre intenzívebbé váló amerikai-kínai versengés napjaink egyik legizgalmasabb világpolitikai folyamata. A folyamat különböző vetületei más-más kérdéseket vetnek fel. Milyen lesz az előrejelzések szerint hamarosan az USA-val azonos gazdasági súlyra …
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The power balance method For aerodynamic performance assessment
This thesis describes the use of the power balance method for performance estimation of aircraft configurations. In this method, mechanical power production and mechanical power consumption of the aircraft are balanced, rather than forces as in the conventional thrust and drag approach to aircraft …
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Analysis of power balance in a helicon plasma source
… characteristics obtained to account for various power loses and understand the major contributors to the low efficiency and final thrust performance. The loses to the quartz tube wall was substantially higher than the loses at the metal bellow region and the loses due to ionization and …
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Aerodynamics and Power Balance of Boundary Layer Ingesting Aircraft
… link between the flow features to the mechanical power losses within the flow field and their consequent impact on BLI performance. A fully-coupled computational test case featuring the aft-fuselage installation and propulsor geometries was set up to resolve the external and propulsor internal …
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Power balance in a helicon plasma source for space propulsion
… due to their high specific impulse. The power balance of an electric thruster based on a helicon plasma source is presented. The power balance is shown to be comprised of several variables, including the RF power supplied to the system, dissipative losses in transmission hardware, losses …
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Study of change of power balance in mobile telecom value chain
… is one of the best examples for the study of the balance of power in the value chain. Three dynamic factors are keys that can change the balance of power in the mobile operator's industry: sociopolitical factors, technological factors, and alliance factors. These factors collectively increase the …
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Development and use of advanced nuclear diagnostics and neural networks to diagnose 3D morphology and power balance in inertial fusion implosions at OMEGA and NIF
… the shape of the shell at minimum-volume and the power balance in the hot-spot. This dissertation describes several novel instruments and analysis techniques to measure these. First is a method to combine information from existing diagnostics that probe asymmetries, such as the neutron imaging …
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Cyberbullying in Relation to Adolescents' Dating and Sexual Behaviour: An Evolutionary Psychological Perspective
… and sexual behaviour, with biological sex and power balance as moderators. Results suggest that overall cyber victimization was associated with more dating and sexual partners. Furthermore, above and beyond the overall levels of cyber victimization, victimization by equally powerful peers was …
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Numerical modelling of devices and advanced transmission schemes embracing Raman effect
… and optimised for efficiency by using a discrete power balance model. The designs include a two stage RFL based on Phosphosilicate core fibre for telecommunication applications, a composite RFL for the 1.6 μm spectral window, and a multiple output wavelength RFL aimed to be used as a compact pump …
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Quantification of lower hybrid wave absorption in the edge of the Alcator C-Mod Tokamak
… and theoretical results suggesting edge power loss. Power modulation is a standard technique used for characterizing power sources and plasma power balance. In this case, the Lower Hybrid radiofrequency (LHRF) power is modulated in time in a set of plasmas across the density range from …
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Balance of power, adjustment, and violence within marital relationships
… three groups. The hypotheses proposed that the power balance groups would differ in their reports of marital adjustment, marital violence, and marital stability. Questionnaires measured marital adjustment, levels of marital violence, and demographics. A follow-up was conducted in order to assess …
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Theoretical studies of the pulsar magnetosphere
… high degrees of corotation. By calculating total power input to the magnetosphere via collisions in the stellar crust. and the total power radiated due to azimuthal drift motion. it is determined that the minimum energy states are the only states where a power balance can be achieved. …
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Theoretical studies of the VASIMR plasma propulsion concept
… (ICRH) section, which is used to deposit rf-power into the plasma; and a magnetic nozzle, which forms highly directed superalfvenic outgoing plasma flow. The dissertation is focused on fundamental physics issues of the helicon source operation and ICRH. A first-principle theory for helicon …
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Religion and Gender in Christian, Jewish, and Muslim Married Couples
… indicates that previous theories of marital power have ignored couples' own conceptualizations and have relied on taken for granted assumptions. Thirty-two religious couples (from Christian, Jewish, and Muslim faiths) were interviewed regarding their gender roles. Grounded-theory qualitative …
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Enabling sustainable power distribution networks by using smart grid communications
… capabilities into the legacy electric power grid system, especially the low voltage distribution networks where various consumers are located. The evolutionary paradigm has initiated worldwide deployment of an enormous number of smart meters as well as renewable energy sources at …
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Geography of the Middle East through the Western Lens: A Survey of Films Set in the Middle East and Filmed in the American Southwest
… geography is a struggle in the world of film: a power balance between the work of the filmmakers and the place itself. Often, the filmmakers tip the scales in their favor and the true nature of the place is lost in translation. Throughout the history of cinema, the geography of the Middle East …
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Development of 0 – D argon collisional radiative model conjoined with optical emission spectroscopy for radio frequency plasma
… their reactions. Then, it includes particle and power balance equations to calculate the electron temperature, density, and gas temperature of radiofrequency plasmas. Two models with different density assumptions are developed to test the accuracy at different pressure regimes. Electron …
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An improved firefly algorithm for optimal microgrid operation with renewable energy
… or remote areas without connection from primary power grid system. Higher cost of fuels, logistic, spare parts and maintenance affect the cost for operation microgrid generation to supply electrical power for remote areas and rural community. This project proposes an Improved Firefly Algorithm …
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Trade space assessment of electrified commercial aircraft
… production in a 2035 timeframe. The propulsive power reduction from boundary layer ingestion (BLI), a technology that could be enhanced by electrification, is characterized and bounded by power balance analysis. An aircraft system model extends this analysis to capture the weight and performance …
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The prediction of flow patterns, liquid holdup and pressure losses occurring during continuous two-phase flow in horizontal pipelines
… correlation which, when used with the two-phase power balance developed in this study, permits pressure losses to be predicted. The principle of dimensional analysis is used and therefore all of the correlations are dimensionless. A step by step procedure for using the correlations is given, …
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