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  • 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.
201

Development of a Cost-Effective, Reliable and Versatile Monitoring System for Solar Power Installations in Developing Countries : A Minor Field Study as a Master Thesis of the Master Programme in Engineering Physics, Electrical Engineering

Trella, Fredrik, Paakkonen, Nils January 2016 (has links)
This report is the result of a conducted Minor Field Study (MFS), to the greatestextent funded by the Swedish International Development Cooperation Agency(SIDA), in an attempt to design a system for evaluating smaller solar power systems indeveloping countries. The study was to the greater part conducted in Nairobi, Kenyain close collaboration with the University of Nairobi. The aim was to develop asystem that would use easily available components and keep the costs to a minimum,yet deliver adequate performance. The system would measure certain parameters of asolar power system and also relevant environmental data in order to evaluate theperformance of the system. Due to the specific competence of the collaboratinggroup at the University of Nairobi, a Kinetis Freescale K64-microcontroller with anARM-Cortex processor was selected as the core of the design. Components wereselected, schematics were drawn, a circuit board was designed and manufactured andsoftware was written. After 12 weeks a somewhat satisfying proof-of-concept wasreached at the end of the field study in Kenya. The project however proved howdifficult it is to go from first idea to a functional proof-of-concept during a limitedtimeframe, and also in an East-African country. The final proof-of-concept was testedat Mpala Research Centre in Kenya and despite containing some flaws proved that itwould indeed be possible to design a working system on the principles discussed inthis report. The system is open-source, so anyone may use and modify it.
202

Čína v globální a regionální politice v 21.století - geopolitický střet s Japonskem, Indií, USA, Ruskem a Evropou / China in Global and Regional policy in the 21st Century- Geopolitical Clash with Japan, India, USA, Russia, and Europe

Petrtýl, Martin January 2014 (has links)
CHINA IN GLOBAL AND REGIONAL POLITICS IN THE 21ST CENTURY - GEOPOLITICAL CLASH WITH JAPAN, INDIA, USA, RUSSIA AND EUROPE Mgr. Martin Petrtýl Supervisor: Doc. Dr. Bořivoj Hnízdo, PhD. Institute of Political Studies, Faculty of Social Sciences This dissertation discusses the current and future role of China in the 21st century. I worked with the idea to prepare a systematically detailed analytical study of the country in relation to its surroundings as well as its internal environment for more than 8 years, including many interruptions. I, above all, contemplated about the way how to truly scientifically, i.e. credibly, it means in the maximum possible the limits of verifiability, develop a full work that could hold up to the colleagues from the scientific community and myself. It is logical it was and is my attempt to allow minimal possibility of any criticism of this work for its formal, content, or other deficiencies. First, I decided to analyse in some detail the currently known theoretical approaches and methods of study, not only in political sciences, especially those used by political geographers, but also in other related fields, especially in the field of study of international relations, sociology, political science or general security studies. I did not want to study the issue is the...

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