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On the advanced production technology of UHMWPE joint implant part
Urbancová, Kateřina ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor’s thesis is dealing with the problematics of individual joint replacements. The thesis summarizes the modern materials used for making artificial joint replacements, but it concentrates mainly on the plastic femoro-tibial part of the implant, usually manufactured from ultra-high molecular weight polyethylene. This material is the best choice when manufacturing the articulating surface of the joint replacement at the moment. The thesis pays attention to the polyethylene surface treatment, as the quality of the surface affects the wear of the plastic, which is critical for the implant lifespan. The thesis also focuses on analysis of the coefficient of friction of UHMWPE in contact with the titanium femoral component. Another part of this thesis is also a wear analysis of used tibial inserts made of UHMWPE and the mechanisms of wear.
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On the advanced production technology of UHMWPE joint implant part
Urbancová, Kateřina ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor’s thesis is dealing with the problematics of individual joint replacements. The thesis summarizes the modern materials used for making artificial joint replacements, but it concentrates mainly on the plastic femoro-tibial part of the implant, usually manufactured from ultra-high molecular weight polyethylene. This material is the best choice when manufacturing the articulating surface of the joint replacement at the moment. The thesis pays attention to the polyethylene surface treatment, as the quality of the surface affects the wear of the plastic, which is critical for the implant lifespan. The thesis also focuses on analysis of the coefficient of friction of UHMWPE in contact with the titanium femoral component. Another part of this thesis is also a wear analysis of used tibial inserts made of UHMWPE and the mechanisms of wear.
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Chinese Strategic Posture: the Case of Semiconductor
Scarazzato, Lorenzo ; Kučera, Tomáš (advisor) ; Urbancová, Kateřina (referee)
The study investigates the influence of politics over technology to then deepen the relevance of semiconductors as part of the defence realm in the case of China. To this end, the importance of technology in warfare and the entailed trade-offs are illustrated along with the efforts to regulate the export flow. The theoretical framework focuses on finding local validity rather than a universal one, bridging politics and technology via the time factor. Hence, semiconductors are included in the Chinese defence sector showing the relevance given them by Beijing's plans for military modernisation. An overview of the supply chain allows for a better understanding of the implications stemming from its global structure, underscoring the autarky-efficiency challenges any state needs to address. Consequently, China embodies a favourable case study because of its domestic power structure, modernisation ambitions, and imposed export controls directing its choices. A thorough analysis of policies and procurement means is employed to confirm the securitisation of the technology, gauging domestic prospects, international responses, and hindrances. Finally, two scenarios structure the main drivers into plausible outlooks, sketching development in the short term and suggesting further research avenues.
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What is the Strategic Impact of Chinese Anti-Access and Area-Denial Capabilities on the Offence-Defence Balance in East Asia? A Comparative Case Study of the United States and Japan
Oldemeier, Niels ; Kučera, Tomáš (advisor) ; Urbancová, Kateřina (referee)
iv ABSTRACT Over the last four decades, the People's Republic of China has modernized its armed forces and acquired the world's largest and most diverse missile arsenal. In light of Beijing's vague yet increasingly assertive stance in the region, China's A2/AD capabilities have sparked a discussion about their offensive potential and threat to the region's stability. This thesis has conducted a qualitative strategic impact of Chinese anti-access and area-denial capabilities on the offence-defence balance in East Asia. Applying Biddle's revised offence-defence theory, this thesis investigated and compared the Sino-American and Sino-Japanese balances. The analyses found that Chinese A2/AD capabilities do not have a uniform impact on the offence-defence balance in the region. Despite its offensive potential, Chinese A2/AD does not provide an effective, sustainable counter to Japan's deep, reserve-oriented force employment strategy. Even though China fields the world's largest fleet, it does not field enough principal surface ships to exploit a temporary offensive advantage. As such, any Chinese attempt to claim the Senkakus would result in a Chinese naval overstretch and create a mutually contested no man's land in the East China Sea. As for the Sino- American balance, Chinese A2/AD creates an...
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Perceptions of the Hong Kong Protests
Zhang, Huahua ; Karmazin, Aleš (advisor) ; Urbancová, Kateřina (referee)
For the purpose of probing into why there is an enormous cognitive bias amongst Mainland China citizens and Hong Kong citizens. This study used quantitative content analysis as the research tool to figure out how mainstream media outlets in Mainland China and Hong Kong frame Hong Kong protest events since the British sovereignty transfer in 1997. This paper selected three significant Hong Kong protest events as empirical cases, 1 July protest (2003), Occupy Central movement (2014), Anti-Extradition Bill movement (2019) to find out the transformation between two media outlets, Xinhua News and South China Morning Post. Framing theory, as the conceptual framework is applied to analyze all selected textual contents in this study. The result of this analysis presents two different versions of media report towards the same issues by two media outlets. And also, the research results also detect a subtle transformation of media coverage in three protest events. Eventually, the paper provides some thinking about media coverage and Hong Kong protest. Keywords: Hong Kong, media coverage, social protest, media, internal security
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