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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.
61

Využití internetového marketingu v činnosti agentury CzechTourism / Use of the Internet marketing activities by CzechTourism agency.

Doležalová, Lenka January 2011 (has links)
This thesis focuses on internet marketing and its use in the field of tourism promotion agency CzechTourism. It examines the use of various internet marketing tools and their impact on tourism in the Czech Republic. It also focuses on work detail CzechTourism marketing activities on the Internet in terms of media campaigns in the past two years. An integral part is an analysis of websites, which serve as the main tool to promote the Czech Republic.
62

Stereology and automated measurement of the human brain

Yin, Kai-Ming January 2018 (has links)
Stereology supplies image sampling rules to estimate geometric quantities such as volume, surface area, feature length and number. The method is well suited to non-invasive image acquisition methods such as Magnetic Resonance Imaging (MRI). Meanwhile, in Magnetic Resonance (MR) images analysis area, automated software packages have been continuously developed and become well-established tools especially in human brainMR images processing. The aims of the thesis are (1) to combine proper rules to sample MR images with automated or semi-automated data acquisition methods, in order to implement four different design unbiased stereological volume estimators in the study of the human brain, and (2) to compare volume estimates with those obtained from automated software packages.
63

Cantralasiens strategiska betydelse:Den nye stora kampen mellan USA och Ryssland / Strategic Importance of Central Asia: The New Great Game between the United States and Russia

Irnazarov, Farrukh January 2005 (has links)
<p>The aim of this thesis is to assess the strategic importance of Central Asia as a whole and interests of great powers in the region in particular within the theoretical framework chosen. The work shows Central Asia as an area of the New Great Game, analogue of the original Great Game which was played out between the British Empire and Tsarist Russia in XIX century. The parallels between the original Great Game and the New Great Game are drawn in order to understand the scope and the true intentions of the players of the latter one. Also, the security issues in the contemporary Central Asia are explored and analyzed to provide with the background for future predictions. Furthermore, the indirect purpose of the thesis is to examine whether the international system has changed from that of two centuries ago by comparing the structure of the international systems at the time of two Games. </p><p>Different theories are gathered into one system theory which serves as a framework for analytical elaboration. The theories used are - the theory of offensive realism, regional security complex theory, strategic theory and the concept of strategic geography, where the applicable essence is withdrawn for analysis of the processes in the contemporary Central Asia. The strategic interests of the regional powers in Central Asia are described and analyzed with the significant help of the theoretical part. </p><p>In order to reach the aim of the research the historical concept of the Great Game is chosen as a method. By comparison of the location, players, means and goals with the New Great Game the validity of concept is verified and, consequently, applied to the Central Asian case. </p><p>On the basis of theoretical and methodological parts the empirical findings are withdrawn and analyzed in turn providing us with the reasonable conclusions on the issue. The perspectives of the two key players - the US and Russia - are analyzed and the possible predictions are made. In a similar way, certain scenarios are provided to Central Asian states, depending on the development of the New Great Game. Finally, the recommendations for further research are given. </p><p>Last but not least, this work is a study of one part of geopolitics in one region at one time, thereby the conclusion drawn is actual only for one region, but not for the discipline as a whole.</p>
64

Rädslans koreografi : Unga mäns föreställningar om rädsla, hot och maskulinitet i den offentliga vardagen / The choreography of fear : Young men's conception about fear, threat and masculinity in the public everyday life

Eklund, Anna January 2006 (has links)
<p>"The choreography of fear" is a discourse-analysis study which focus at how young men speaks about fear, threat and violence in the public everyday life. The study adopts socialcontructionism as theoretical approach and also uses theories about gender, hegemony masculinity, fear as a social constructed phenomenon and moral-panic. The study is based on qualitative interview whit young men in age 18-30 and the method is mainly discourse-psychology. The section of Analysis discuss subjects as what and whom the young men consider to be a threat and which areas in the public space they consider to be dangerous and how they choose to handle the menace. The Analysis also focuses on how the informants speak about fear, how they define fear and what they consider arouse fear.</p>
65

Cantralasiens strategiska betydelse:Den nye stora kampen mellan USA och Ryssland / Strategic Importance of Central Asia: The New Great Game between the United States and Russia

Irnazarov, Farrukh January 2005 (has links)
The aim of this thesis is to assess the strategic importance of Central Asia as a whole and interests of great powers in the region in particular within the theoretical framework chosen. The work shows Central Asia as an area of the New Great Game, analogue of the original Great Game which was played out between the British Empire and Tsarist Russia in XIX century. The parallels between the original Great Game and the New Great Game are drawn in order to understand the scope and the true intentions of the players of the latter one. Also, the security issues in the contemporary Central Asia are explored and analyzed to provide with the background for future predictions. Furthermore, the indirect purpose of the thesis is to examine whether the international system has changed from that of two centuries ago by comparing the structure of the international systems at the time of two Games. Different theories are gathered into one system theory which serves as a framework for analytical elaboration. The theories used are - the theory of offensive realism, regional security complex theory, strategic theory and the concept of strategic geography, where the applicable essence is withdrawn for analysis of the processes in the contemporary Central Asia. The strategic interests of the regional powers in Central Asia are described and analyzed with the significant help of the theoretical part. In order to reach the aim of the research the historical concept of the Great Game is chosen as a method. By comparison of the location, players, means and goals with the New Great Game the validity of concept is verified and, consequently, applied to the Central Asian case. On the basis of theoretical and methodological parts the empirical findings are withdrawn and analyzed in turn providing us with the reasonable conclusions on the issue. The perspectives of the two key players - the US and Russia - are analyzed and the possible predictions are made. In a similar way, certain scenarios are provided to Central Asian states, depending on the development of the New Great Game. Finally, the recommendations for further research are given. Last but not least, this work is a study of one part of geopolitics in one region at one time, thereby the conclusion drawn is actual only for one region, but not for the discipline as a whole.
66

Rädslans koreografi : Unga mäns föreställningar om rädsla, hot och maskulinitet i den offentliga vardagen / The choreography of fear : Young men's conception about fear, threat and masculinity in the public everyday life

Eklund, Anna January 2006 (has links)
"The choreography of fear" is a discourse-analysis study which focus at how young men speaks about fear, threat and violence in the public everyday life. The study adopts socialcontructionism as theoretical approach and also uses theories about gender, hegemony masculinity, fear as a social constructed phenomenon and moral-panic. The study is based on qualitative interview whit young men in age 18-30 and the method is mainly discourse-psychology. The section of Analysis discuss subjects as what and whom the young men consider to be a threat and which areas in the public space they consider to be dangerous and how they choose to handle the menace. The Analysis also focuses on how the informants speak about fear, how they define fear and what they consider arouse fear.
67

Treatment of TCE-contaminated groundwater using hybrid membrane treatment process

Hung, Wei-Jhe 05 August 2011 (has links)
In Taiwan, more than 25% of all water uses comes from groundwater, and thus groundwater is a very valuable water resource for both domestic and industrial uses. However, groundwater at many existing former industrial sites and disposal areas was contaminated by halogenated organic compounds that were released into the environment. The chlorinated solvent trichloroethene (TCE) is one of the most ubiquitous of these compounds. In this laboratory-scale feasibility study, a hybrid two-stage process combining fiber filtration (FF) and nanofiltration (NF) was applied to remove to suspended solids (SS) and TCE from contaminated groundwater for water purification. In this study, a man-made kaolin solution was used to simulate groundwater purification using FF system. Then, microfiltration (MF), ultrafiltration (UF), and NF systems were applied for TCE removal. The hybrid membrane process using FF and NF units was used to evaluate the feasibility on TCE removal. The scanning electron microscope (SEM) and energy dispersive spectroscope (EDS) were used to investigate membrane morphology and structure after use. A 3-D excitation emission fluorescence matrix (EEFM) was used to evaluate the potential of membrane organic fouling. Results show that the optimization filtration velocity of FF was 15.3 m/hr, and the observed TCE and SS removal efficiencies were 80% and 60%, respectively. Removal mechanisms for MF and UF were mainly sieving, and the removal mechanism for NF was mainly electrostatic repulsion. Results indicate that NF had the highest TCE removal efficiency (98.2%). When initial TCE concentration was 1 mg/L, NF membrane pore might shrink caused increased TCE removal (rejection). When TCE concentration was higher 1 mg/L, membrane damage and pore enlargement was observed with decreased TCE removal efficiency. The observed SS, sulfate, and hardness removal efficiencies were 99.8%, 98.7%, and 98.7% respectively, when FF and NF hybrid process was used. Higher TCE concentration might enlarge membrane pore, which caused decreased membrane separation and increased flux. Approximately 46% of flux drop was observed when NF was used alone compared to the hybrid membrane process using FF as the first treatment stage. Membrane analyses show that residual TCE was adsorbed on the membrane. Low zeta potential of groundwater was observed due to the compressed electric double layer, which caused aggregation of particle. High zeta potential of permeate was due to the particle dispersive through hybrid process. Results from SEM analysis show that membrane morphology was damaged by TCE, and heavy metal in groundwater deposited on membrane. Results of EEFM analysis indicate that groundwater contained humic acid (HA) and soluble microbial by-product (SMP). HA and SMP might be adsorbed on fiber filter, and extracellular polymeric substances (EPS) that attached on fiber filter might be washed out. The organic powders on the surface of the fiber filter might be washed out causing the increased in NPDOC concentrations. Humic acid could be removed through NF process, and SMP might be adsorbed in membrane pore caused organic fouling, and SMP might be washed out after treatment by the FF+NF hybrid process. Results indicate that FF as pre-treatment can maintain higher flux. Higher TCE concentration caused membrane destruction and decreased membrane separation. TCE contaminated groundwater can be affectively treated by the hybrid membrane system to meet the groundwater standard and reclaimed water standard. Reclaimed water could be used for industrial cooling water and irrigation purposes.
68

Aid as a Path on the Muddled Road Toward Democratization? : A quantitative multiple case study on the impact of aid on the democratization process in Sub Saharan Africa

Buhlin, Sofia January 2009 (has links)
<p>This thesis deals with the problematic question of aid as a helping hand to states that are in the process of developing democracy. It focuses on the Sub Saharan African region as a critical case, and furthermore upon the aid contributions made by the European Union during the time period of 1996-2006. The main ambition is to explore the real effect of aid on the democratic process, but also to explore other variables that might have effect. The method used is regression analysing of a database called The Quality of Government database Cross – Section Time-Series May 2008. The database has later been modified to suit my specific needs and aid has been recoded. This thesis is meant to be a theory testing study, and the theories tested will be related to the independent variables such as aid as a democratic helping hand as well as theories of corruption, political participation and military rule in the search for democracy. </p>
69

Bepiločio skraidančio sparno aerodinaminių charakteristikų tyrimas / Research of aerodynamic characteristics of unmanned flying wing

Masiulis, Paulius 25 June 2014 (has links)
Šiame darbe nagrinėjamos bepiločio skraidančio sparno aerodinaminės charakteristikos. Pasirinktas sparno profilis EPPLER 328. Pirmiausia išanalizuojami skaitiniai aerodinaminių charakteristikų tyrimo metodai. Atlikus skaičiavimus pagal pasirinktus aspektus, naudojant programą XFLR5 gauti duomenys apibendrinami bei išanalizuojami. Ištirtos keliamosios jėgos koeficientų, pasipriešinimo jėgos koeficientų, aerodinaminės kokybės reikšmės esant atitinkamiems atakos kampams. Naudojantis tyrimo rezultatais padarytas bepilotis skraidančio sparno orlaivis ir atlikti skrydžiai. Visa informacija apibendrinama ir pateikiamos gautų rezultatų išvados. Darbo apimtis – 66 p. teksto be priedų, 39 paveikslai, 6 lentelės, 24 bibliografiniai šaltiniai. / The investigation analyzes unmanned flying wing aerodynamic characteristics. Choosen airfoil EPPLER 328. Firstly, analyzing theoretical calculation methods. All relative data compared and analyzed after calculation with program XFLR5. Analyzed lift force coefficient, drag force coefficient, aerodynamic coefficient under realative angles of attack. Unmanned flying wing was built using the results of compared and analyzed aerodynamic data and test flights were made. All information summarized and produced conclusion. Thesis consists of: 66 p. text without appendixes, 39 pictures, 6 tables, 24 bibliographical entries.
70

A comparison of feto-placental vascularity in normal and growth restricted pregnancies

Junaid, Toluwalope Oluwafunmilayo January 2016 (has links)
In human pregnancy, the feto-placental vessels are crucial for efficient materno-fetal transfer; hence they play a pivotal role in the pathogenesis of fetal growth restriction (FGR). We, as well as other research groups, have observed abnormalities in the FGR feto-placental vasculature, which, though inconclusive, were suggestive of a state of panhypovascularity. The goal of the work presented in this thesis was to investigate this. We hypothesised that the placenta may be panhypovascular in FGR due to failed angiogenesis; and enhancing angiogenesis in the placenta may improve fetal growth. Custom-designed techniques including advanced imaging, computer-aided analyses and tube-forming experiments were employed to compare feto-placental vessels and endothelial cells in placentas from normal and FGR-complicated pregnancies while aiming to answer two main research questions: (i) is the FGR placenta panhypovascular? (ii) can angiogenesis be induced or enhanced to improve placental vascularity?Findings include: (i) shorter arterial [p = 0.03 and 0.009 when data adjusted for placental surface area (PA) and weight (PW) respectively] and longer venous path [p = 0.05 and 0.03, adjusted for PA and PW respectively] in FGR placentas though no difference in the total number of arterial or venous branches, diameter, and tortuosity of the vessels compared to normal; (ii) altered angiogenic behaviour/response of FGR placental endothelial cells following in vitro pharmacological manipulation of WNT signalling; (iii) human placental endothelial cells are capable of regaining their angiogenic potential following withdrawal of WNT inhibition. These findings discount the hypothesis of panhypovascularity in FGR placentas, but identify additional, previously unreported, feto-placental vascular abnormalities associated with FGR. Also, the findings provide evidence that impairment of WNT signalling may play a role in defective angiogenesis and consequent dysvascularity in the FGR placenta. The evidence suggests the WNT pathway should be explored as a potential new target for therapeutic interventions to correct placental dysvascularity in FGR.

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