In this diploma thesis there is elaborated design of low-voltage power supply block using I3T25 technology. The theoretical part describes the basic structures used in the design, using CMOS and bipolar devices. Furthermore, the properties and the analysis used in the evaluation are described. In the design part there is an elaborated design of individual parts, including voltage references, current references, DAC converter, operational amplifier. In the last part, the power supply block is subjected to simulations for verification of temperature compensated output variables and analyzed circuit functionality.

This Graduate Thesis is about communication module for optical wireless network. This device read data from RS232 port and two analog inputs and sends it through internet to a remote Computer. Furthermore allows voice communication between local user on module and user on remote computer. Device allows communication with standard headphones and microphone, or with Bluetooth handsfree. Basic part is microprocessor MCF5223 and Bluetooth Ezurio BISM II module. Control program has been written in C language. Printed circuit is created by EAGLE program. This device is managed via web interface and settings have been stored into EEPROM memory. Work contains description of separately parts and blocks, source code of program, description of source code and printed circuit designs.

Official Development Assistance (ODA) or international development aid (defined as the transfer of official financing to promote the development and welfare of developing countries), is a highly influential and politically sensitive area of international relations. Though it is not governed by any international legal agreement, it displays remarkable cohesion across the major Northern donors in its modalities of governance, the coherence in its normative aims and in its institutional reform agenda. In order to understand why, this project focuses on the central, if overlooked, role of the Organisation for Economic Co-operation and Development (OECD) and its Development Assistance Committee (DAC) as the key institutional locus of the international governance of ODA by donors. This project examines the legal nature of the international governance of ODA, tracing and critically analysing the link between the governance of ODA and governance by ODA. It demonstrates how the legal form of the international governance of ODA is central to the reach and effectiveness of the legal and institutional reform agenda promoted via ODA at national and international levels, and to contouring the legal and political subjectivities of donors and aid-recipient states in ways that escape formal legal and democratic recognition. Finding that mainstream legal analytical methods fail to fully capture the legal-juridical quality of the international governance framework of ODA, and the particular role of law therein, I develop a new analytical lens based on the concepts of ‘jurisdiction’ (as juris dictio) and the ‘signature.’ This lens reveals how ODA creates a distinct jurisdiction with its own internal legal logic, where donor and aid-recipient subjectivities and relations of authority are continually constructed and maintained by international governance instruments and practices developed during colonial and imperial governance eras under the League of Nations and Marshall Plan institutions. I demonstrate how this jurisdictional space is augmented by key legal, policy, bureaucratic and technocratic instruments of governance by the OECD and DAC, through patterns of juridification and reiteration.

Bibliographic note Ertürk, Saadet (2019). The Rise of China and its Implications for Western Development Cooperation Policy. Master Thesis. Charles University, Faculty of Social Sciences, Institute of Political Studies, Supervisors: Dr. Michal Parízek & Dr. Sebastian Ziaja. Abstract Recently new donors are beginning to challenge the international aid architecture of traditional Western donors by providing huge amounts of foreign aid to Sub-Sahara African (SSA) countries without political conditions attached, thereby undermining the bargaining power and influence of OECD DAC donors. Especially Chinas new role as aid donor causes a lot of scepticism among researchers. This master thesis investigates whether OECD DAC donors changed their aid allocation policies and patterns in response to rising Chinese foreign aid activities in SSA countries. So far, the literature investigating the relationship between foreign aid provided by traditional Western donors and aid by the Chinese government has been limited mostly due to the lack of accurate data on Chinese foreign aid. This study makes use of a new dataset on Chinese foreign aid flows in order to examine the response of OECD DAC donors to Chinese foreign aid activities in SSA between 2000 to 2014. It finds that contrary to current assumptions OECD DAC donors do...

This dissertation develops design methods and architectures which allow analog circuits to operate at VT + 2Vds,sat, the minimum supply for CMOS circuits with all transistors in the active region where Vds,sat is the drain to source saturation voltage of a MOS transistor. Techniques which meet this criteria for rail-to-rail input stages, gain enhancement stages, and output stages are discussed and developed. These techniques are used to design four fully-differential rail-to-rail amplifiers. The highest gain is shown to be attained using a drain voltage equalization (DVE) or active-bootstrapping technique which produces more than 100dB of gain in a two stage amplifier with a bulk-driven input pair while showing no bandwidth degradation when compared to amplifier architectures with similar biasing. The low voltage design techniques are extended to switching and sampling circuits. A 10-bit digital to analog converter (DAC) and a 10-bit analog to digital converter (ADC) are designed and fabricated in a 0.35um dual-well CMOS process to prove the developed design methods, architectures, and techniques. The 10-bit DAC operates at 1MSPS with near rail-to-rail differential output operation with a 700mV supply voltage. This supply voltage, which is 150mV lower than the VT+2Vds,sat limit, is attained by using a bulk driven threshold voltage lowering technique. The ADC design is a fully-differential pipelined 10-bit converter that operates at 500kSPS with a full scale input range equal to the supply voltage and can operate at supply voltages as low as 650mV, 200mV below the VT + 2Vds,sat limit. The design methods and architectures can be used in advanced processes to maintain gain and minimize supply voltage. These designs show a minimum supply improvement over previously published designs and prove the efficacy of the design architectures and techniques presented in this dissertation.

This thesis presents a novel power side-channel DAC (PS-DAC) which is constructed from user-controllable short circuits in FPGAs and which manipulate overall system power through dynamic power dissipation. Alternately, similar PS-DACs are created using shift-register primitives(SRL16E) which manipulate system power through switching logic, for means of comparison with short-circuit-based PS-DACs. PS-DACs are created of various sizes using both short-circuit-based and shift-register-based methods. These PS-DACs are characterized in terms of output linearity,monotonicity, and frequency distortion. Applications explored in this thesis which use PS-DAC technology include a Simple Power Analysis (SPA) side-channel transmitter, and a frequency watermarking application. These applications serve as proof-of-concept for PS-DAC use in sidechannel communication applications.

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Mechanical pressure offers unique control over the energy landscape of chemical reactions, opening up pathways that are inaccessible through conventional thermochemistry. We hypothesize that the reduced dimensionality defines the conformational space of the high-pressure reaction, giving rise to new selectivity that is unavailable in 3D systems. Here, we demonstrate this concept through the pressure-controlled topochemical polymerization of the diacetylene molecule deca‐3,5‐diyn‐1‐amine (DDA) incorporated in the two-dimensional (2D) perovskite [DDA]2PbBr4. Compression at 3 GPa drives the first topochemical polymerization through 1,2 addition, forming a polyene product at room temperature. The reaction is initiated by the mechanical bending of the linear DDA molecule, a mechanism fundamentally different from the 1,4-addition in 3D solids. Importantly, pressure hinders the second 1,2-addition by disfavoring the gauche conformation between the remaining acetylene groups, allowing for the selective formation of polyene versus polyacene products. We characterize the reaction mechanisms and products using spectroscopies (Raman, X-ray photoelectron, ultraviolet-visible), X-ray diffraction and density-functional theory simulations. These results highlight the important role of dimensionality in high-pressure chemistry, and offers a new paradigm for creating low-dimensional functional materials.

No description available.

Noise in electronic circuits can sometimes cause problems. It is especially problematic in for example high sensitive sensors and high end audio and video equipment. In audio and video equipment the noise will make its way into the sound and picture reducing the overall quality. Sensors that are constructed to sense extremely small changes can only pick up changes larger than the noise floor of the circuit. By lowering the noise, sensors can achieve higher accuracy.  This thesis presents an ultra low noise solution of the biasing circuitry to the bolometer used in one of FLIR Systems high end cameras. The bolometer uses different adjustable direct current voltage sources and is extremely sensitive to noise. The purpose is to improve the picture quality and the thermal measurement resolution. A prototype circuit was constructed and in the end of the thesis a final circuit with successful result will be presented.