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The lithium ion battery is today mainly used in cell phonesand laptops. In the future, this kind of battery might beuseful in hybrid electric vehicles as well. In this work, the main focus has been to gain more knowledgeabout the lithium ion battery in the hybrid electric vehicle(HEV) and more precisely to examine what processes of thebattery that are limiting at HEV currents. Both experiments andmathematical modelling have been used. In both cases, highrate, pulsed currents typical for the HEV, have been used. Two manuscripts have been written. Both of them concern thebehaviour of the battery at HEV load, but from different pointsof view. The first one concerns the electrochemical behaviourof the battery at different ambient temperatures. Theexperimental results of this paper were used to validate amathematical model of a Li-ion battery. Possiblesimplifications of the model were identified. In this work itwas also concluded that the mass transfer of the electrolyte isthe main limiting process within the battery. The mass transferof the electrolyte was further studied in the second paper,where the concentration of lithium ions was measured indirectlyusing in situ Raman spectroscopy. This study showed that themathematical description of the mass transfer of theelectrolyte is not complete. One main reason of this issuggested to be the poor description of the physical parametersof the electrolyte. These ought to be further studied in orderto get a better fit between concentration gradients predictedby experiments and model respectively.

Cyberspace has penetrated every facet of society's life and the nation's security. It entangled the whole world together, providing exceptional opportunities and threats. One of these threats is a new kind of warfare known as Hybrid warfare; Its nature is to deploy all unconventional means to achieve objectives given by its user. Additionally, means used in cyberspace and capabilities it offers have a complementary effect on Hybrid warfare strategies creating a positive feedback loop. Targets of this new type of warfare are usually Western democracies or nations affiliated with them. The western open approach to cyberspace proved to be readily exploitable by malicious actors. These actors are nations such as Russia or China. However, private entities or individuals have, too, proved to be capable of employing Hybrid tactics. These tactics employed are cyberattacks, data gathering and exploitation, and disinformation. There is a case period for each of them: Cyberattacks during 2007 Estonia, Data gathering and exploitation, the Chinese model and its dissemination, and disinformation throughout the recent COVID-19 pandemic. Each case will attempt to examine the effects of Cyberspace on Hybrid warfare; Which proved to be a complementary effect, cyberspace amplifying Hybrid warfare and providing it...

It is well established that cancer is one of the leading causes of death globally. Its complete eradication requires early detection and intensive drug treatment. In many cases it might also require surgery. Unfortunately, current medicine is still more focused on cancer treatment rather than elimination of its reason. The mechanism of tumor emergence and development is quite complicated, although, we are constantly advancing in this field. Nanomedicine is envisioned as the silver bullet against cancer. Thus, nanoscale systems with therapeutic and diagnostic modalities can simultaneously perform several functions: accurate detection of tumor site, precise targeting, and controlled drug release inside abnormal cells and tissues while being nontoxic to healthy ones. Moreover, surface modification of such nanoparticles allows them to be invisible to the immune system and have longer blood circulating time. The performed research in this dissertation is completely based on hybrid organicinorganic bridged silsesquioxane (also known as organosilica) nanomaterials, therefore comprising "soft" organic/bioorganic part which can imitate certain biorelevant structures and facilitates successful escape from the immune system for more efficient accumulation in cancer cells, while "hard" inorganic part serves as a rigid and stable basis for the creation of cargo nanocarriers and imaging agents. This dissertation discusses the 5 critical points of safe biodegradable nanoplatforms, delivery of large biomolecules, and cytotoxicity regarding the shape of nanoparticles. As a result novel fluorescent biodegradable oxamide-based organosilica nanoparticles were developed, light-triggered surface charge reversal for large biomolecule delivery was applied with hollow bridged silsesquioxane nanomaterials, and biocompatibility of periodic mesoporous organosilicas with different morphologies was studied. Furthermore, the current achievements and future perspectives of mesoporous silica organosilica, and silsesquioxane nanoparticles were considered in regards to their biomedical applications and summarized in two reviews.

The first part of this thesis is based on the theory and recorded findings of growing winter oilseed rape. The second part of the thesis describes phenological observations of winter rape from sowing the seeds to the harvest, which were conducted in the company Zemo, spol. s r.o., in the years 2015/2016. During these observations, grower´s inputs were recorded, in which innovative solutions in the cultivation of winter oilseed rape hybrids were used in the above mentioned company. Three land blocks (Greit, Šarcles and Štumpigl) with three winter oilseed rape hybrids (Marathon, Mercedes and Sherpa) were selected and every month the following data were observed: BBCH stage, the number of plants per sq m, plant height, root length and the diameter of the root neck. Furthermore, the average yield of hybrid seeds harvested per hectare was calculated, which was then compared to the company´s average yield of the same varieties, as well as to the company and whole country´s average yields of winter oilsee rape in the years 2014, 2015 and 2016. The data were statistically processed and evaluated graphically.

Global change-failure rates remain over 70%, despite over a half-century of research, theory development, and mitigation strategies. Although researchers studying the problem of change failure recognize that subcultural perceptions influence change success, especially in hybrid organizations where subcultural differences are more profound, the perceptions that predispose a subculture to support or resist organizational change remain relatively unknown. The purpose of this exploratory case study was to address the problem of the high cost of change failure by identifying perceptions that influence change success within a maritime organization. The study'€™s conceptual framework was founded on the interpretive paradigm and social constructivist epistemology, leveraging insights from change, conflict, social identity, attachment, cultural, and construal level theories. Data were collected from 20 shipboard workers attending a maritime institute through questionnaires, focus group discussions, and face-to-face interviews. Manual and software assisted analysis of the data revealed potentially influential perceptions related to trust, value, communication, inclusiveness, and respect that are worthy of future research and quantitative analysis, particularly in relation to their situational context and net combined influence. Researchers and change designers may use insights and methods from this study in developing future studies on subcultural perceptions. More successful perception-mitigating change designs could support positive social change by reducing operational costs associated with change failure and fatigue, as well as organizational stress and frustration associated with directed change.

This thesis examines the impact of the physical contamination on optical surfaces of spacecraft by an ABS/GOX thruster. Plume contamination presents a significant operational hazard for spacecraft solar arrays and thermal control surfaces can lead to decreased power production and increased spacecraft temperatures. Historically, due to the lack of a reliable, on-demand, and multiple-use ignition methodology, hybrid rockets have never been previously considered for in-space propulsion. Recent advancements in hybrid rocket technologies, have made hybrid systems feasible for in space propulsion. However, prior to this study no research had ever been performed with regard to plume contamination effects due to hybrid rockets. This paper presents the results from a set of preliminary plume contamination measurements on a prototype small spacecraft hybrid rocket system, collected under both ambient and vacuum chamber conditions.

The Utah State University Propulsion Research Laboratory (USUPRL) has recently made significant developments in the area of hybrid rocket systems. This type of propulsion system incorporates a solid fuel and a gas or liquid oxidizer. Hybrid rocket systems are known for their inherent safety, reliability, and restart capability. Over the last several years, the USUPRL has successfully built and tested a hybrid rocket system comprising acrylonitrile butadiene styrene (ABS) plastic and gaseous oxygen (GOX). The system was demonstrated to be fully functional during ground, vacuum, and sub-orbital flight testing. Continuing forward, the USUPRL endeavors to extend the capabilities of this hybrid rocket system to in-space propulsion applications, such as an attitude control systems (ACS). This thesis investigates the feasibility of using the USU Green Hybrid Rocket as an ACS for an intermediate-sized launch vehicle. A computer simulation was developed to demonstrate the control and stability of the spacecraft under the influence of the ACS.

This thesis details a study of the structural behavior of Hybrid-Composite Beams (HCB) consisting of a fiber reinforced polymer (FRP) shell with a concrete arch tied with steel prestressing strands.  The HCB offers advantages in life cycle costs through reduced transportation weight and increased corrosion resistance. By better understanding the system behavior, the proportion of load in each component can be determined, and each component can be designed for the appropriate forces. A long term outcome of this research will be a general structural analysis framework that can be used by DOTs to design HCBs as rapidly constructible bridge components. This study focuses on identifying the load paths and load sharing between the arch and FRP shell. Testing was performed by applying point loads on simple span beams (before placing the bridge deck) and a three beam skewed composite bridge system.  Curvature from strain data is used to find internal bending forces, and the proportion of load within the arch is found. Additionally, a stress integration method is used to confirm the internal force contributions.  The tied arch carries about 80% of the total load for the non-composite case without a bridge deck.  When composite with a bridge deck, the arch has a minimal contribution to the HCB stiffness and strength as it is below the neutral axis. For this composite case the FRP shell and prestressing strands resist about 85% of the applied load while the bridge deck carries the remaining 15% to the end diaphragms and bearings. / Master of Science

京都大学 / 0048 / 新制・課程博士 / 博士(人間・環境学) / 甲第19078号 / 人博第731号 / 新制||人||175(附属図書館) / 26||人博||731(吉田南総合図書館) / 32029 / 京都大学大学院人間・環境学研究科共生人間学専攻 / (主査)准教授 桒山 智成, 教授 丸橋 良雄, 准教授 髙谷 修, 教授 依田 義丸 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DGAM