京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第21826号 / 農博第2339号 / 新制||農||1067(附属図書館) / 学位論文||H31||N5198(農学部図書室) / 京都大学大学院農学研究科地域環境科学専攻 / (主査)准教授 髙橋 知之, 教授 北山 兼弘, 准教授 刑部 正博 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DFAM

Color filters enable photosensors to obtain spectral composition of incoming radiation, be it to mimic human vision or to separate analytical signals. Efforts to increase the resolution of these photosensors lead to decrease in size of individual picture elements – pixels, which places increasing demands on the color filter technology. Conventional color filters operating on the principle of absorption of light in organic pigments are frequently used, but they are no longer meeting growing requirements of increasing sensor resolution. Here, metasurfaces comes to an aid, utilizing nanostructures to separate colors and thus creating structural coloration. There are many approaches to separate colors using metasurfaces, but each carries certain disadvantages with their principle of operation. In this thesis, we present a novel approach to separate colors which utilizes manipulation of radiation polarization. The presented color filter is first modeled and optimizes through numerical simulations and then manufactured using nanofabrication methods. Finally, the optical response of nanostructures is verified by several optical spectroscopy methods.

Amparo Davila's writing style is characterized by circumventing the boundaries between the real and the fantastic and between the known and the unknown. The author creates a narrative that evokes horror in the reader by mixing the uncanny of the unknown with the reality of the world. This study proposes that the sinister in Davila's stories are created by abandonment. This abandonment is the peremptory element of Davilian narrative and can be seen and examined throughout the author's literary work. The abandonment wields a mechanism of loneliness, madness, hopelessness and chaos that eventually provokes the sinister. The element of abandonment disturbs the main character of the story and makes him fall into an abyss from which he or she cannot escape. This abandonment is not always obvious, since most of the time the abandonment is veil by a halo of gothic and fantastic elements. The present thesis has the task of breaking down the different types of abandonment that are presented throughout this narrative, its sinister function and the theoretical and historical interpretation of the various abandonments both personal and collective that Amparo Davila presents. The route of abandonment proposed in this thesis is explained in the following three stories: "El desayuno" (1961), "La quinta de las celosías" (1959) and "La señorita Julia" (1959).

Pre-Charge Half Buffers (PCHB) and NULL convention Logic (NCL) are two major commercially successful Quasi-Delay Insensitive (QDI) asynchronous paradigms, which are known for their low-power performance and inherent robustness. In industry, QDI circuits are synthesized from their synchronous counterparts using custom synthesis tools. Validation of the synthesized QDI implementation is a critical design prerequisite before fabrication. At present, validation schemes are mostly extensive simulation based that are good enough to detect shallow bugs, but may fail to detect corner-case bugs. Hence, development of formal verification methods for QDI circuits have been long desired. The very few formal verification methods that exist in the related field have major limiting factors. This dissertation presents different formal verification methodologies applicable to PCHB and NCL circuits, and aims at addressing the limitations of previous verification approaches. The developed methodologies can guarantee both safety (full functional correctness) and liveness (absence of deadlock), and are demonstrated using several increasingly larger sequential and combinational PCHB and NCL circuits, along with various ISCAS benchmarks. / National Science Foundation (Grant No. CCF-1717420)

This diploma thesis deals with wireless doorbell realisation. The doorbell is battery-powered and supports half duplex voice transferring. The general aim is to design system circuitry, PCB and to create microcontroller firmware.

This paper follows up archaeological finds from left bank of Prague, which are dated to Romanesque period. The main topic are situations documented in Malá Strana and Hradčany, which are completed with informations from an area of whole left bank of todays city. Paper tries to follow up a spatial development and interactions between smaller parts of the agglomeration. Finally local development is compared with urban tendencies in Europe.

With power conversion efficiency surpassing the 10% milestone for commercialization, photovoltaic technology based on solution-processable polymer solar cells (PSCs) provides a promising route towards a cost-efficient strategy to address the ever-increasing worldwide energy demands. However, to make PSCs successful, challenges such as insufficient light absorption, high maintenance costs, and relatively high production costs must be addressed. As solutions to some of these problems, the unique properties of nanostructured materials and complimentary light absorption in multi-junction device structure could prove to be highly beneficial. As a starting point, integrating nanostructure-based transparent self-cleaning surfaces in PSCs was investigated first. By controlling the length of the hydrothermally grown ZnO nanorods and covering their surface with a thin layer of chemical vapor-deposited SiO2, a highly transparent and UV-resistant superhydrophobic surface was constructed. Integrating the transparent superhydrophobic surface in a PSC shows minimal impact on the figure of merit of the PSC. To address the low mechanical durability of the transparent superhydrophobic surface based on SiO2-coated ZnO nanorods, a novel method inspired by the water condensation process was developed. This method involved directly growing hollow silica half-nanospheres on the substrate through the condensation of water in the presence of a silica precursor. Benefit from the decreased back scattering efficiency and increased light transport mean free path arise from the hollow nature, a transparent superhydrophobic surface was realized using submicrometer sized silica half-nanospheres. The decent mechanical property of silica and the “direct-grown” protocol are expected to impart improved mechanical durability to the transparent superhydrophobic surface. Regarding the application of multi-junction device structure in PSCs, homo multi-junction PSCs were constructed from an identical polymer absorber, in which the homo-tandem device showed an enhanced power conversion efficiency (PCE) (8.3% vs 7.7%) relative to the optimized single junction PSC. The high open voltage (>1.8 V) achieved in homo-tandem PSCs allowed for water splitting with an estimated solar-to-fuel conversion efficiency of 6%. Lastly, a hybrid tandem cell was also constructed using a polymer and a colloidal quantum dot subcell. Different hybrid tandem device architectures were proposed and show a promising PCE of 6.7%.

Many potential therapeutic agents face challenges for their clinical development due to short circulation half-life. As a result, prolonging the half-life of therapeutic drugs in circulation while preserving their hydrophilicity and small size will be a key step toward more effective and safe pharmacological molecules. Our lab developed a new approach for enhancing the safety and efficacy of therapeutic agents. By endowing therapeutic agents with a hydrophilic small molecule (a derivative of the clinical candidate, AG10) which reversibly binds to the serum protein transthyretin (TTR), the half-life of the therapeutic agent should be extended by binding to the TTR in serum. We termed this technology TTR Ligand for half-life extension (TLHEs). The approach involved using TLHE, which binds with TTR by high specificity and affinity. Our group has already shown that this technology extends the half-life of peptides, small molecules, and proteins without seriously affecting their binding activity towards their receptor and efficacy. As we are expanding the applicability of TLHE to extend the half-life of hydrophobic moieties, increasing the polarity of the TLHE linker could be beneficial to maintain overall hydrophilicity. Our main objective here is to see the effect of TTR binding affinity and selectivity of TLHE in serum when we attach a hydrophilic glutamic acid in the TLHE linker.

The thesis focuses on a previously untreated topic. It deals with Czech stained glass from 1945 to the present. Based on the exploration of stained glass on both sacral and public premises, as well as on pieces created for the presentation of Czechoslovakia at international exhibitions, it creates a comprehensive picture of the development of Czech stained glass in this period. The first part deals with the renewal of glass making and professional schools. Most attention is paid to Josef Kaplický's studio at the Academy of Arts, Architecture & Design in Prague. The thesis also documents works of glassmakers and artists in 1950s. As a breaking point for the development of stained glass, EXPO'58 is stated. In 1960s, the World Fair in Brussels widely influenced activities of Czech glassmaker who started inserting stained glass innovatively into reliefs using other experimental forms. It also shows that, in connection with new technological innovations in 1970s and 1980s, stained glass was applied in reconstructed and new buildings. The text implies that after the Velvet Revolution in 1989, a change occurred in the State's approach to the support of decorating public buildings, and in the same period, new private artistic glassmaking workshops and stained glass studios were established. There was more...

The research undertaken in this study is an attempt to determine the influence of farm advisory services, socio-economic factors, and physical factors on the aggregate toxicity of pesticides used by cotton and peanut farmers in the Albemarle-Pamlico Watershed of Virginia and North Carolina. An aggregate toxicity index is developed for all pesticides used on each farm site. Four different types of farm advisors are considered in this study, namely, hired staff, university and state extension agents, chemical dealers, and scouting personnel. Regression analysis is used to estimate how the aggregate toxicity index and the aggregate pesticide expenditures were affected by farmers' choice of the most important farm advisory services; the farmer's age, education, and farming experience; productivity of the soil; soil erosion index; distance of farm from nearest water source; and the state in which the farm was located. The results of this study indicate that hired staff, scouting personnel, and extension agents are associated with higher aggregate toxicity of pesticides on cotton farms, while scouting personnel and chemical dealers are associated with higher aggregate toxicity of pesticides on peanut farms. More years of farming experience is associated with a slight decrease in aggregate toxicity on cotton farms. Increasing age of farmers is associated with a slight increase in aggregate toxicity on peanut farms. Training of farm advisors should include information about potential environmental damage from alternative pesticides. Advisors should be informed about the effects of soil physical characteristics on potential for environmental damage from pesticide use. Farm advisors should also be trained in methods to disseminate information to farmers on pesticide toxicity to the environment. More information on pesticide toxicity could also be publicized on pesticide packages. Continued research on less toxic pesticides and alternative pesticides is also an important strategy to reduce pesticide toxicity. / Master of Science