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Dissertations / Theses on the topic 'Power shifting'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Savoie, Lee, David K. Lowenthal, Bronis R. de Supinski, et al. "I/O Aware Power Shifting." IEEE, 2016. http://hdl.handle.net/10150/622666.

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Power limits on future high-performance computing (HPC) systems will constrain applications. However, HPC applications do not consume constant power over their lifetimes. Thus, applications assigned a fixed power bound may be forced to slow down during high-power computation phases, but may not consume their full power allocation during low-power I/O phases. This paper explores algorithms that leverage application semantics-phase frequency, duration and power needs-to shift unused power from applications in I/O phases to applications in computation phases, thus improving system-wide performanc

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2

Johansson, Nicklas. "Control of Dynamically Assisted Phase-shifting Transformers." Licentiate thesis, Stockholm : Elektrotekniska system, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4653.

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3

Wexler, Dara H. Biklen Sari Knopp. "Shifting pedagogies: intersections of computer-supported technologies, education, and power." Related Electronic Resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2003. http://wwwlib.umi.com/cr/syr/main.

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4

Guldbrand, Anna. "Analysis of an induction regulator for power flow control in electric power transmission systems." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5329.

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<p>Controlling the power flow in transmission systems has recently gained increased interest. The difficulties of building new lines and the pressure of having a high utilization of existing assets, makes the flexibility of grid systems increasingly important.</p><p>This master thesis work investigates induction regulators as control devices for active power flow in a transmission system. A small change in angle of the rotor affects both the amplitude and the phase of the voltage. The magnetic coupling in the induction regulator can be controlled by changing the permeability of a thermo magnet

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Kihara, Stacy A. "A rising China: shifting the economic balance of power through cyberspace." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44593.

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Approved for public release; distribution is unlimited<br>The growing evidence of Chinese government complicity in commercial cyber espionage and theft of intellectual property, costing the United States billions of dollars, has blurred the distinction between the geopolitical and economic realms, complicating an already complex relationship. Yet, China’s cyber activity takes place in the context of an extensive economic interdependence between the two countries that may be seen as a source of stability in the relationship. Taking into consideration the economic interdependence between the Uni

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McPherson, Gayle. "Shifting power, policy and practice in a local authority museum service." Thesis, Glasgow Caledonian University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404685.

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The aim of this research is to investigate the extent to which there have been changes in the direction of Glasgow's Museum Service (Glasgow Museums) from one grounded in a curatorial and conservational set of values to one embracing commercial values, attitudes and practices, effected by a move towards a managerialist culture and away from a curatorial culture. In order to pursue this aim, the research attempts to track key decisions (via Council Minutes and personal testimony) over an historical period (1973-1996), identifying and assessing evidence of any such change in policy and practice.

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Ali, Syed Muhammad Hassan. "Optimal sizing of low-carbon integrated power networks through shifting electricity demand." Thesis, The University of Sydney, 2019. https://hdl.handle.net/2123/22126.

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The objective of this thesis is to develop a GIS-based simulation tool for optimising the size of 100% renewable electricity grid by utilising flexible electricity demand and generation. Different technology options are presented for load-shifting; electric water-heaters and air-conditioners from the residential sector, and wastewater treatment and desalination plants from the industrial sector. The impact on renewable electricity grid due to the shifting of electricity demand from these loads is described, and several options are highlighted that might be feasible from a policy point of view.

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8

Ratanapanachote, Somnida. "Applications of an electronic transformer in a power distribution system." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2756.

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In electrical power distribution and power electronic applications, a transformer is an indispensable component which performs many functions. At its operating frequency (60/50 Hz), it is one of the most bulky and expensive components. The concept of the electronic transformer introduced previously has shown considerable reduction in size, weight, and volume by operating at a higher frequency. In this dissertation, the concept of the electronic transformer is further extended to the auto-connected phase-shifting type to reduce harmonics generated by nonlinear loads. It is shown that with the

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9

Gates, Leslie C. "Why Mexican unions lost power : globalization, intra-elite conflict and shifting stat alliances /." Ann Arbor, MI : UMI, 2001. http://aleph.unisg.ch/hsgscan/hm00076907.pdf.

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10

Woodman, Bridget. "Shifting the balance of power? : renewables and distributed generation in liberalised electricity systems." Thesis, University of Sussex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270394.

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Gates, Leslie C. "Why Mexican unions lost power: Globalization, intra-elite conflict and shifting state alliances." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279780.

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This study explains why, beginning in 1976 and continuing into the 1980s, unions lost power in Mexico. The recent loss of power in Mexico is consistent with a worldwide convergence towards declining union power. Few would dispute that declining union power is related to globalization. But how does globalization affect union power? This study demonstrates that the prevailing approach to globalization and union power, the market pressures approach, cannot explain why labor unions lost power in Mexico. This suggests that in countries, such as Mexico, where unions rely on political support rather

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12

Clarke, Thomas Leighton. "Aggregation of Electric Water Heaters for Peak Shifting and Frequency Response Services." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/5033.

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The increased penetration of renewable energy sources poses new challenges for grid stability. The stochastic and uncontrollable generation of solar and wind power cannot be adjusted to match the load profile, and the transition away from traditional synchronous generators is reducing the grid capacity to arrest and recover from frequency disturbances. Additionally, the distributed nature of many renewable energy sources makes centralized control of generation more complicated. The traditional power system paradigm balances the supply and demand of electricity on the grid by regulating generat

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Boyle, Ellexis. "Building a body for governance : embodying power in the shifting media images of Arnold Schwarzenegger." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1494.

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When Arnold Schwarzenegger muscled his way into the competition for the governance of California in October 2003 many thought it was a joke, or worse, a sign of the devolution of American politics into the lowest form of populism (Louw, 2005; Baudrillard, 2005; Indiana, 2005). Yet, Schwarzenegger’s victory in the recall election is indicative of a history of celebrities in American politics as well as a more widespread ‘culture of celebrity’ that has burgeoned beyond entertainment and into all forms of public life (Andrews and Jackson, 2001; Holmes and Redmond, 2006). While much has been made

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Hildebrand, Lawrence P. "Power sharing in the coastal zone : shifting roles of government in community-based coastal management." Thesis, Cardiff University, 2009. http://orca.cf.ac.uk/54908/.

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The objective of this research is to evaluate the role of government in collaborative government-community coastal management initiatives. The research aimed specifically to: demonstrate that governments are willing to share selected management responsibilities with non-statutory community-based organizations and that the community-based organizations are willing and able to assume specific responsibilities to describe the conditions under which such power sharing occurs and to identify the specific management functions that can and are willing to be shared. This research was informed by a det

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Grossi, Mabel <1988&gt. "Shifting power dynamics inside Hamas in the aftermath of the Arab uprisings. Between moderation and radicalisation." Master's Degree Thesis, Università Ca' Foscari Venezia, 2014. http://hdl.handle.net/10579/4492.

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The aim of the thesis is to provide an accurate answer to the following questions: “What has been the extent of the impact of the Arab Spring over Hamas’s authority structure?” and “Are the recent internal divisions between Hamas’s leaderships a new and unprecedented phenomenon triggered by the Arab Spring, or are they the result of a peculiar historical development that reached a new momentum in 2011?”. In order to answer these questions, the thesis provides a deep historical and political analysis of Hamas, since its establishment in Palestine, until the most recent Arab Spring, with partic

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Self, Robert Owen. "Shifting ground in metropolitan America : class, race, and power in Oakland and the East Bay, 1945-1977 /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/10489.

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Moore, Chiara C. "The War on Drugs and Public Safety Realignment in California: Shifting Incentives, Persistent Problems." Scholarship @ Claremont, 2016. http://scholarship.claremont.edu/scripps_theses/737.

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This thesis examines AB 109, “Public Safety Realignment”, a policy enacted in California in 2011 to address the United States Supreme Court mandate to reduce overcrowding in California’s prisons to 137.5%. Realignment proactively shifted ‘non-non-non’ felons (non-serious, non-violent, non-sex crimes) from the state prison system to the county jail system and made some changes to the parole and probation systems. Though California’s prison population declined considerably in 2011 and 2012, this reduction did not last; in 2013 the prison population in California increased by 1,770 inmates, and i

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Adurthy, Pragashnie. "Shifting landscapes, changing dynamics. The rise of regional hegemons : a case study of South Africa, 2009-2018." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/71131.

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This dissertation examines the interplay of history, Pan-Africanism and soft power and its impact on how hegemony should be understood on the African continent. These dynamics were demonstrated through an examination of scholarship related to South Africa’s contested status as a regional hegemon. Using the theoretical framework of the Hegemonic Stability Theory, it argues that much of the current contestation is attributed to the limitations of transposing a global theory to the regional level without taking into account the dynamics and complexities of that particular region. The study ado

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Puppala, Ajith kumar. "Design of a Low Power Cyclic/Algorithmic Analog-to-Digital Converter in a 130nm CMOS Process." Thesis, Linköpings universitet, Elektroniksystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80132.

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Analog-to-digital converters are inevitable in the modern communication systems and there is always a need for the design of low-power converters. There are different A/D architectures to achieve medium resolution at medium speeds and among all those Cyclic/Algorithmic structure stands out due to its low hardware complexity and less die area costs. This thesis aims at discussing the ongoing trend in Cyclic/Algorithmic ADCs and their functionality. Some design techniques are studied on how to implement low power high resolution A/D converters. Also, non-ideal effects of SC implementation for Cy

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Nortemann, Alexander. "Development of a mechatronic transmission control system for the drivetrain of the K71 project." Thesis, Nelson Mandela Metropolitan University, 2014.

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The tractive force has to be interrupted during a gear-shifting operation in a manual vehicle transmission, leading into a decrease of speed while changing gears during the acceleration process. Therefore in a racing application, the shifting time has to be as short as possible so that the required performance of a racing car can be achieved. The following dissertation describes the development of a transmission control system to enable gear changes within a manual gearbox, which was designed for the Formula Student racing series. Various solutions were developed on the basis of reviewed liter

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Mack, Adrian. "Film as a Mirror of Evolving Consciousness| The Politics of Representation, the Power of Social Media, and Shifting Landscapes." Thesis, California Institute of Integral Studies, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10615336.

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<p> Social paradigms establish narratives that dictate society. Film, as a form of public pedagogy, mirrors social narratives on screen and instructs society how to view others and think about the world. Diverse individuals and groups view the world differently based on their environment and development. When individuals view film content, their unique perceptions support their understandings of the film content. Without dialogue and reflection, particularly with people with different worldviews and backgrounds, inaccurate, incomplete, and harmful information that is exhibited on screen may co

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22

Katariya, Ashish Santosh. "Dynamic modeling and feedback control with mode-shifting of a two-mode electrically variable transmission." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45825.

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This thesis develops dynamic models for the two-mode FWD EVT, develops a control system based on those models that is capable of meeting driver torque demands and performing synchronous mode shifts between different EVT modes while also accommodating preferred engine operating points. The two-input two-output transmission controller proposed herein incorporates motor-generator dynamics, is based on a general state-space integral control structure, and has feedback gains determined using linear quadratic regulator (LQR) optimization. Dynamic modeling of the vehicle is categorized as dynamic mo

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23

Hall, Ruth. "The politics of land reform in post-apartheid South Africa, 1990 to 2004 : a shifting terrain of power, actors and discourses." Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.547756.

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Greer, Kerry. "Expanding responsibilities and shifting demands : an analysis of the effects of migration and employment on immigrant women's negotiating power in the household." PDXScholar, 2006. https://pdxscholar.library.pdx.edu/open_access_etds/3922.

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This study's objective was to examine the affect that migration and employment have on immigrant women's negotiating position within the household. Depth interviews were conducted with nine women who migrated to Portland, Oregon from Ethiopia or Eritrea. Women were encouraged to share a narrative history of their migration and employment experience. These interviews were analyzed to answer three primary questions: Who are immigrant women supporting through their participation in the paid labor market? How do women utilize gain access to employment opportunities and what strategies do women use

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Johansson, Nicklas. "Aspects on Dynamic Power Flow Controllers and Related Devices for Increased Flexibility in Electric Power Systems." Doctoral thesis, KTH, Elektriska maskiner och effektelektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37823.

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This thesis studies different aspects of Flexible AC Transmission System (FACTS) devices which are used to improve the power transfer capability and increase the controllability in electric power systems. In the thesis, different aspects on the usage and control of Dynamic Power Flow Controllers (DPFC) and related FACTS devices are studied. The DPFC is a combination of a Phase Shifting Transformer (PST) and a Thyristor Switched Series Capacitor (TSSC)/Thyristor Switched Series Reactor (TSSR). The thesis proposes and studies a new method, the Ideal Phase-Shifter (IPS) method, for selection and

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Al-Hadban, Yehya. "Demand-side management in office buildings in Kuwait through an ice-storage assisted HVAC system with model predictive control." Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/3885.

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Examining methods for controlling the electricity demand in Kuwait was the main objective and motivation of this researchp roject. The extensiveu se of air-conditioning for indoor cooling in office and large commercial buildings in Kuwait and the Gulf States represents a major part of the power and electricity consumption in such countries. The rising electricity generation cost and growing rates of consumption continuously demand the construction new power plants. Devising and enforcing Demand-SideM anagemen(t DSM) in the form of energye fficient operations trategies was the response of this

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Wareing, Susan Marion. "An examination of the shifting identities of education professionals within the framework of national education policy : a study in power relations manifested in professional discourse." Thesis, Manchester Metropolitan University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443302.

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Trisyani, Yanny. "An exploration of the role of nurses working in emergency care services in general hospitals in Indonesia." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96103/1/Yanny_Trisyani_Thesis.pdf.

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This research explored the nursing role in the Indonesian ED setting through a social constructivist lens. The emergency department (ED) nursing role in Indonesia is considered strategic in achieving quality outcomes and yet the nursing role in this context lacks clarity and visibility. This study generated two key analytical concepts: shifting boundaries and lacking authority. The interrelationship of these concepts constructed a core category, securing legitimate power, which reflects the social structural processes underpinning the development of the ED nursing role. The findings of this re

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Lambert, Quentin. "Business Models for an Aggregator : Is an Aggregator economically sustainable on Gotland?" Thesis, KTH, Industriella informations- och styrsystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98482.

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Under the determined impulse of the European Union to limit the environmental impact of energy-related services, the electricity sector will face several challenges in coming years. Integrating renewable energy sources in the distribution networks is certainly one of the most urging issues to be tackled with. The current grid and production structure cannot absorb the high penetration shares anticipated for 2020 without putting at risk the entire system. The innovative concept of smart grid offers promising solutions and interesting implementation possibilities. The objective of the thesis is

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Kreikebaum, Frank Karl. "Control of transmission system power flows." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50392.

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Power flow (PF) control can increase the utilization of the transmission system and connect lower cost generation with load. While PF controllers have demonstrated the ability to realize dynamic PF control for more than 25 years, PF control has been sparsely implemented. This research re-examines PF control in light of the recent development of fractionally-rated PF controllers and the incremental power flow (IPF) control concept. IPF control is the transfer of an incremental quantity of power from a specified source bus to specified destination bus along a specified path without influenc

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Yu, Yang. "Synchronous Machine for Unidirectional Application." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105832.

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This master thesis investigates the possibilities for performance improvements of synchronous machines with unidirectional application.The literature review part presents theories and applications of asymmetrical machine. Four categories regarding asymmetrical machine, namely mixed pole, saturation mitigation, pole shifting and asymmetrical pole shaping, are summarized. It is shown that asymmetrical concept offers characteristic improvement in one or both rotational directions. A field winding synchronous model was used in FEM simulation (FLUX 2D). Armature reaction effecton this machine is in

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Myska, Martin. "Possibilities with Stirling Engine and High Temperature Thermal Energy Storage in Multi-Energy Carrier System : An analysis of key factors influencing techno-economic perspective of Stirling engine and high-temperature thermal energy storage." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-53407.

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Small and medium-scale companies are trying to minimise their carbon footprint and improve their cash flow, renewable installations are increasing all over the Europe and are expected to do so in following years. However, their dependency on the weather cause pressure on matching the production with demand. An option how to challenge this problem is by using energy storage. The aim of this project is to determine techno-economic benefits of Stirling engine and high temperature thermal energy storage for installation in energy user system and identify key factors that affect the operation of su

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Lo, Franco Francesco. "Integrazione di sistemi di accumulo a batterie e impianti fotovoltaici di grande taglia per applicazioni grid-connected." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In un impianto fotovoltaico connesso alla rete elettrica, l’ integrazione di un sistema di accumulo permette di raccogliere l’ energia dal solare nelle ore di minor richiesta di rete (di giorno), ed erogarla nei momenti di bassa produzione e di maggiore richiesta di rete (la sera). In collaborazione con ENGIE Eps, è sorta l’ esigenza di confrontare tre diverse tipologie di accoppiamento delle batterie in un impianto ibrido PV+Batteria connesso alla rete elettrica. La prima architettura è chiamata AC coupling poiché il BESS (Battery Energy Storage System) è connesso tramite opportuni converti

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McKnight, Thomas Kevin. "An Improved Flexible Neutron Detector For Powder Diffraction Experiments." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/463.

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Large amounts of money are being applied to the construction of the next generation of spallation sources for neutron scattering. Neutron powder diffraction instruments will be an important element of these facilities and the incorporation of detectors into these instruments with a high neutron capture efficiency is desirable. A new detector design named the Flexible Embedded Fiber Detector (FEFD) has been developed and tested for this thesis. This detector is based on wavelength shifting fibers embedded in a zinc-sulfide lithium-fluoride based scintillator. The virtue of this design is that t

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Sztankovics, Linda. "Shifting powers, prospects and perspectives? : A critical reading of the European Union’s geopolitical reasoning on critical raw materials." Thesis, Försvarshögskolan, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-9700.

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Global energy transitions and rises in demand for critical raw materials (CRMs) are predicted to reshape global politics in yet uncertain but profound ways. With CRMs being vital for Europe’s decarbonization process, the present study sets out to examine the EU’s geopolitical discourse by taking an inquisitive yet critical stance focusing particularly on the new “geopolitical” Commission’s geopolitical reasoning on CRMs. Building upon critical geopolitics, a discourse analysis was conducted on 9 European Commission communications (2019–2020). Three key observations were made: first, a ‘geopoli

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Korejčík, Michal. "Návrh transformátoru s regulací fáze pro laboratorní výuku." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219412.

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This thesis deals with a power flow control in the electric power system. An overview of FACTS devices is introduced; their basic characteristics as well as examples of their application are discussed. A significant part of this thesis investigates phase shifting transformers (PST´s), which seem to be suitable for implementation in the transmission system of the Czech Republic. The PST´s are useful devices that control active power flows on cross-border lines and regulate unwanted and unexpected power flows. Basic types and characteristics of the PST´s are discussed. In chapter 7 is designed l

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Weddle, Charles O. Wang An-I. Andy. "PARAID the Gear-Shifting Power-Aware RAID /." Diss., 2005. http://etd.lib.fsu.edu/theses/available/etd-07082005-154633.

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Thesis (M. S.)--Florida State University, 2005.<br>Advisor: Dr. An-I Andy Wang, Florida State University, College of Arts and Sciences, Dept. of Computer Science Title and description from dissertation home page (viewed Sept. 15, 2005). Document formatted into pages; contains xi, 71 pages. Includes bibliographical references.

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Lin, Chu-Chuan, and 林助銓. "A New Scan Scheme for Shifting Power Reduction." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/47139440915405458845.

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碩士<br>淡江大學<br>電機工程學系碩士班<br>99<br>This paper presents a scan chain modification scheme aiming at minimizing scan-shift power in this paper. We focus on reducing the scan-out power during scan shift when using our algorithm without modification of test patterns and scan-in ordering. An algorithmic procedure for assigning responses in scan-out reordering reduces scan-out transitions. We only use an additional control signal to change scan-in mode and scan-out mode. To verify the effectiveness of the proposed technique, we conduct experiments on large ISCAS’89 benchmark circuits and the results sh

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Husan, Yu-Chen, and 宣宇晨. "Study on Microgrid Power Dispatch by Optimal Load Shifting." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6mj797.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>This thesis applies optimal load shifting to microgrid power dispatch. First of all, a commercial software Solar Pro is used to create a solar PV system model and to simulate their power generation. The Weibull probability density distribution is used to create a wind speed model and calculate its power generation. Then, this paper uses the fmincon, the built-in function of Matlab® for optimal load shifting of users. Users change their electricity consumption habit according to different time-of-use and dynamic electricity pricing to achieve the goal of stabil

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Coghlan, Rachael. "Imagined Conversations: The powerful (and power-shifting) potential of museum participation." Phd thesis, 2017. http://hdl.handle.net/1885/147217.

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For over a century, museums have claimed that they will democratise, need to democratise or have a new idea or approach about how they are going to democratise. However, a range of issues and institutional cultures that privilege expertise conspire to ensure professional practice remains undemocratic, exclusive and one-sided. This tends to result in the retention of curatorial control and a professional culture that resists change. Participation—in which visitors are invited to leave a comment, co-create or contribute to exhibitions—is the latest tr

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Li, Chao-Chun, and 李昭俊. "Application of Eigenvalue Shifting and Approaching Method to Power System Stability Analysis." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/69307787801675907719.

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碩士<br>國立海洋大學<br>電機工程學系<br>85<br>The eigenstructure (eigenvalue and eigenvector) analysis is usually employed in the study of power system dynamic stability. Based on the Eigen-Decompositioned Artificial Neural Network (EDANN), two methods, namely Approaching Method (AM) and Shifting and Approaching Method (SAM), are proposed in this thesis for computing the most unstable and all unstable modes of the system, respectively. It is concluded from the studied cases that the proposed methods

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Tseng, Li-Hua, and 曾俐華. "A Mathematical Technique for Optimal Design and Load Shifting of Hybrid Power Systems." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/vepx2c.

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碩士<br>國立臺北科技大學<br>化學工程研究所<br>105<br>A hybrid power system (HPS) can be defined as an energy system utilizing more than one renewable energy (RE) source, such that the electricity generated is more efficient, reliable and cost-effective, offering a better option than single source-based systems. This paper presents a generic mathematical optimization model for the design of hybrid power systems. Utilizing renewable energy sources (e.g. solar, wind etc.) reduces the dependence on fossil fuels. Energy storage (e.g. batteries) is incorporated to facilitate power allocation and overcome the intermi

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Sithole, Frederick Silence. "Enhanced voltage regulation in lightly-loaded, meshed distribution networks using a phase shifting transformer." Thesis, 2013. http://hdl.handle.net/10210/8439.

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M.Ing. (Electrical and Electronic Engineering)<br>Long transmission lines in power system require high line loading in order to lower voltage limits due to line losses. For relatively long lines, line charging is high and thus higher voltage limits reached at low loading. It follows then that it is a challenge to maintaining the voltages between the acceptable limits for relatively long lines. This dissertation highlights the problems experienced when load varying from very low to very high is supplied by very long parallel lines of different impedance characteristic. When the load is extremel

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Rentala, D. B., and M. Das. "A Novel method to Detect and Evaluate Power Quality disturbances using Hilbert Phase Shifting and CORDIC Algorithm." Thesis, 2014. http://ethesis.nitrkl.ac.in/5520/1/110EE0645-11.pdf.

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Power Quality (PQ) is an umbrella term that encompasses all the aspects connected with amplitude, phase and frequency of the voltage and current waveforms existing in a power circuit. Adverse Power quality environments refer to the transient conditions developing in the power circuit and eventually affecting the load and the source. Power Quality Monitoring refers to the task of detecting the disturbances in the system which leads to the deterioration of the Power Quality and the immediate execution of measures to compensate the same. The various disturbances that adversely affect the quality

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"Shifting Indian Identities in Aravind Adiga's Work: The March from Individual to Communal Power." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.17980.

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abstract: In contemporary Indian literature, the question over which sets of Indian identities are granted access to power is highly contested. Critics such as Kathleen Waller and Sara Schotland align power with the identity of the autonomous individual, whose rights and freedoms are supposedly protected by the state, while others like David Ludden and Sandria Freitag place power with those who become a part of group identities, either on the national or communal level. The work of contemporary Indian author Aravind Adiga attempts to address this question. While Adiga's first novel The White T

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Sokol, E. I., Volodymyr Zamaruiev, Volodymyr Ivakhno, Yurii Voitovych, Olha Butova, and Vadim Makarov. "18-Pulse rectifier with electronic phase shifting and pulse width modulation." Thesis, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46801.

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At present, 12-pulse rectifiers with electronic phase shift are known. Unlike classic rectifiers, they do not use phase-shifting transformers and have a unit power factor. Increasing of the rectifier’s pulse makes it possible to improve the harmonic composition of the input current. This article is devoted to the study of the operation of an 18-pulse rectifier with an electronic phase shift. The use of the principle of electronic phase shift leads to different levels of constant voltage at the output of the rectifiers. The introduction of pulse-width modulation contributes to equalizing the ou

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"Enhanced voltage regulation in lightly-loaded, meshed distribution networks using a phase shifting transformer." Thesis, 2013. http://hdl.handle.net/10210/8398.

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M.Ing. (Electrical and Electronic Engineering)<br>Long transmission lines in power system require high line loading in order to lower voltage limits due to line losses. For relatively long lines, line charging is high and thus higher voltage limits reached at low loading. It follows then that it is a challenge to maintaining the voltages between the acceptable limits for relatively long lines. This dissertation highlights the problems experienced when load varying from very low to very high is supplied by very long parallel lines of different impedance characteristic. When the load is extremel

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Hung, Wen-Bin, and 洪文彬. "Enhancing the Power Conversion Efficiency of Crystalline Si Solar Cells via Luminescent Down-shifting Phosphors." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/70687191395723477866.

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博士<br>國立交通大學<br>應用化學系碩博士班<br>103<br>Silicon based solar cells have been the workhorse in the market due to its abundance and relatively inexpensive processing. However, under UV and n-UV illumination, most of the electron-hole pairs are generated near the device surface and consumed easily through the recombination with surface defects, which is responsible for inducing rather poor performance. In addition, the high contrast of refractive indices between air and silicon also causes a high Fresnel reflection loss (~40%) at air-silicon interfaces and limits the performance of silicon-based photo

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Molapo, Reentseng Majara. "Improvement of steady state and voltage stability of a strong network overlayed with higher voltage transmission lines using phase shifting transformers." Thesis, 2011. http://hdl.handle.net/10413/8499.

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This research work deals with the application of the phase shifting transformer in improving the steady state performance and voltage stability of transmission network that has transmission lines at different voltage levels running in parallel to each other. Transmission power system networks are usually developed using lines built at a certain voltage level initially. As power demand requirements increase, building of the new lines at the same voltage level becomes necessary. However, lesser and lesser improvements in transfer capacity are realised when the additional lines are built. This pr

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Wu, Ching-Ting, and 吳晉廷. "Dynamic simulation and shifting performance analysis of a dual-power-input transmission for an electric vehicle." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6b2777.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>106<br>In this paper, the gear gearbox of the Europe vehicle inspection L6 class electric vehicle is taken as the research object, and a complete dynamic simulation analysis and shift performance analysis system is established. How to ensure the speed and ride comfort of the gearshift is an important index in the design of the gearbox. The successful application of ADAMS in system dynamics simulation can not only improve the simulation accuracy, but also shorten the product design cycle because of its kinematics and dynamics characteristics. It has important applica

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