• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 9
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 17
  • 5
  • 5
  • 3
  • 3
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A tall tower wind investigation of northwest Missouri

Redburn, Rachel. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on January 8, 2008) Includes bibliographical references.
2

Advanced power electronic for wind-power generation buffering

Montenegro León, Alejandro. January 2005 (has links)
Thesis (Ph.D.)--University of Florida, 2005. / Title from title page of source document. Document formatted into pages; contains 194 pages. Includes vita. Includes bibliographical references.
3

Investigation of dynamics, control, power quality and fault response of a MW-size wind generator with integrated storage

Strachan, Nicholas P. W. January 2010 (has links)
a control, power quality and stability perspective. This is chiefly due to the future influence on power system behaviour resulting from the rapid cumulative growth of grid integrated wind power, and the improved control characteristics afforded by modern variable speed wind power generators. There is consequently strong motivation to enhance the inherent control robustness, power quality and fault-ride-through characteristics of modern wind power generators. By so doing, the attributes essential for power system operation regarding security of supply, reliability, and power quality can be assured. The work presented in this thesis employs a two-fold methodology in order to improve the inherent control, power quality and fault tolerance characteristics of a modern wind power generator based on a 2MW medium-voltage directly-driven permanently-excited architecture employing full-scale power conversion. Firstly, due to the complexity of modern wind power generators, accurate and complementary detailed non-linear (circuit orientated) and linear analytical (state-space based) wind generator models are developed. Collectively, these facilitate a wide range of detailed transient and smallsignal, control, stability and fault analysis studies. Ultimately, this facilitates the means by which advanced AC voltage controls are developed that significantly extend the wind power generator stable operating range for grid strength variations (grid impedance variation). Secondly, a supercapacitor based electrical energy storage system is designed and integrated within the developed wind generator models in order to facilitate the means by which fault-ridethrough characteristics and power quality can be improved. Fault-ride-through characteristics are ultimately improved by absorbing a proportion of generated power in the integrated storage system during grid-side faults. Power quality is ultimately improved by effectively buffering wind speed fluctuations in the integrated storage system so that a ‘smoothed’ version of the generated power results at the wind generator terminals.
4

Čína - reálná hrozba pro americkou hegemonii? / China - a real threat to U.S. hegemony?

Florková, Barbora January 2014 (has links)
The main aim of diploma thesis "China - real threat for American hegemony?" is to answer the question whether China is trying to threaten American position of world hegemon. After the dissolution of USSR and the fall of Iron Curtain USA became the only world superpower. Balance of power theory assumes that the occurrence of leading actor in the system will invoke attempts of others to balance the power of the leader, or to weaken him. In current world political system there are powers whose power potential is growing. One of them is China, mainly because its fast growing and prospering economy. Author of the thesis works with the concept of hegemony based on hard and soft power and three types of exercising of power - three faces of power - as means of achieving its goals. Author analyses Chinese use of hard and soft power resources, that can be classified under three types of use of power. All policies are then examined from "balance of power" theory view. Author tries to find out which one of behavior "balancing" attempts to balance, weaken USA or "bandwagoning" - support of USA is prevailing in Chinese policies. According to the prevailing tendency of Chinese behavior towards USA the author is capable to state whether China can be considered as a threat for US hegemony.
5

Německá zahraniční politika. Je Spolková republika Německo "civilní mocností"? / Germany's foreign policy. Is Federal Republic of Germany still a "civilian power"?

Janardhan, Bindu January 2021 (has links)
The thesis aims to study Germany's foreign policy methods to answer the research question if Germany is still a civilian power. The presented work aims to establish that Germany's foreign policy methods and decision-making process are guided by civilian power theory's normative principles and values, thereby making Germany a civilian power. The author will test this through case study analysis on four diverse case study topics that explore Germany's foreign policy methods over a period of time, thus analyzing the evolution of Germany's foreign policy methods furthermore, if this evolution displays continuity or change of modification in Germany's foreign policy methods. The thesis studied Germany's role in Eastern European enlargement, non-military engagement specifically in combat operations in Iraq, military engagement and combat operations in Afghanistan, and Germany's engagement in the developmental policies for Africa. The formulated hypotheses of the four case studies stand to be correct. Germany's foreign policy methods are guided by civilian power norms and principles since its unification until now under the leadership of three different chancelleries. Because of this, Germany is still a civilian power and adapts to the challenges faced at the time and modifies its methods only after...
6

Identification of Power System Stability Using Relevant Modes

Whitlock, Rogers, Jr 17 December 2011 (has links)
The purpose of this investigation is to identify appropriate location of capacitor banks and sources of reactive power by studying power system stability in the vicinity of system equilibrium states. The locations for reactive power sources are determined by identifying those modes of the system that participate most in the system behavior in general and in dictating the final state of the system after experiencing faults or disturbances. To identify the relevant modes of the system that participate most in the system dynamic, we shall make use of modal and participation analysis for different system conditions. We also apply modal and participation analysis to a system in order to identify the components of greatest impact that result in the most efficient system control. The ideas developed in this study are used to analyze and identify weak boundaries of the IEEE 39- Bus system that contribute to the system’s instability.
7

Single-leg power generation in adolescent & young adult athletes returning to sport following anterior cruciate ligament reconstruction

Braun, Kaitlyn Nicole. January 2010 (has links)
Title from first page of PDF document. Includes bibliographical references (p. 31-34).
8

Mocenský vzestup Číny v soudobých mezinárodních vztazích (případová studie) / China's Rising Power in Contemporary International Relations (Case Study)

Koudelková, Tereza January 2013 (has links)
This Master 's thesis focuses on the rising power of China in contemporary international relations. The rise of China faces the post-Cold-War international system with one of the most significant changes in power distribution; as such, it is of significant importance for the entire field of international relations. The thesis aims to evaluate the Chinese rise to power, and determine whether the country should be considered a great power affecting the international system. To achieve this goal, the author performs a two-level analysis based on the theory of realism, which first analyzes China's position as a state and then its impact on the international system. The thesis is divided into six chapters. The first one sets the theoretical framework. Chapters two to five look into China's position of power in the military, economic, political and socio-environmental dimension. The sixth chapter analyzes the influence of China on the international system in the case study of the current China-U.S. relations. The thesis concludes that China could be considered a great power, but only a partial one with a limited impact on the international system.
9

Rassistische Sprache – Eine Untersuchung zu Strategien für das Simultandolmetschen vom Englischen ins Deutsche hinsichtlich ihrer Praktikabilität

Lengoc, Quynh Anh 29 November 2024 (has links)
This article offers an insight into strategies in English-to-German simultaneous interpretation that can be applied when a speaker uses racist language. Six interpreters were first introduced to a selection of strategies. They were then asked to interpret a staged panel discussion in which racist language was used. Each time they recognized racist speech they were supposed to intuitively apply one of the strategies they had previously been introduced to. In a final step, all six interpreters took part in a focus group interview during which they assessed the applied strategies and discussed difficulties. The results from both the interpretations and the focus group interview illustrate how racist speech can be interpreted critically. They offer a new perspective on traditional translation and interpretation theories as well as on the role of interpreters. The article concludes with some ideas as to how the results could be incorporated into interpretation didactics. Given the fact that we live and work in a time in which power relations and the world’s landscape continue to shift and change, it appears appropriate to challenge the current self-image of interpreters.
10

Power in forest management institutions: A systematic review

Charmakar, Shambhu, Kimengsi, Jude Ndzifon, Giessen, Lukas 27 November 2024 (has links)
The comprehension of actors’ power and their manifestations within Forest Management Institutions (FMIs) remains fragmented in the literature. Equally, there are inconsistencies in the methodological approaches employed in studying actors’ power and FMIs. This paper assesses the conceptualization of actors’ power in the literature on FMIs, analyzes the existing literature on how actors shape forest resource use and management outcomes, and evaluates the yet-to-be-filled methodological gaps in the study of power in FMIs. A systematic review of articles comprising 55 empirically conducted studies (87 cases) within the framework of the Actor-centered Power approach in FMIs was performed. The literature was analyzed using directed content analysis. The analysis reveals four key findings: i) there's a growing emphasis on power dynamics in FMIs worldwide, both explicitly and implicitly in the literature; ii) formal actors, like the forest administration, primarily exercise power through coercion, while NGOs and donors rely on incentives and dominant information. Informal actors employ informal dominant information and incentives; iii) positive ecological outcomes in the global north align with formal institutions, while in the global south; formal and informal institutions are linked to these outcomes. Likewise, socioeconomic outcomes demonstrate a blend of positive and negative patterns across regions associated mostly with formal institutions; and iv) finally, the review highlights the underutilization of mixed-methods approaches, with a prevalence of qualitative methods. To conclude, future research avenues should consider post-colonial systems in Africa and/or intricate power structures in Asia while emphasizing the adoption of mixed-methods to fully comprehend power dynamics within FMIs.

Page generated in 0.0507 seconds