Дисертації з теми "Emergent logic"

Threshold logic is a powerful alternative paradigm for realizing Boolean functions in digital circuit design. A threshold logic function (TLF) can be roughly defined as a Boolean function in which the output is evaluated in terms of input weights and a threshold value. Although the subject has been investigated since the 1960’s, the lack of effective hardware implementation for threshold functions led to a loss of interest in developing a threshold logic design flow. However, for some emerging technologies, such as memristors, spintronic, quantum cellular automata (QCA) and resonant tunneling devices (RTD), such a logic design strategy seems to be more appropriate than the traditional switch-based CMOS circuitry. Thus, research and development of synthesis and verification methods applicable to large, multi-level threshold circuits are desired. Existing state-of-the-art threshold logic synthesis tools rely on locally resynthesizing each single-output node out of circuits initially mapped disregarding thresholdness. This work presents the first effective technology mapping approach for threshold logic gates (TLGs), which is based on identifying threshold logic functions during the mapping. This enables to explore the entire circuit-level search space, seeking a threshold logic covering. As a consequence, we improve both area and performance results, as well as the synthesis scalability. A second contribution introduced in this thesis improves the quality of results by efficiently exploring redundant cuts. The technology mapper, we propose herein, is also able to target different threshold-based area estimations: the total summation of input weights and threshold values; the total summation of gate inputs; and the total number of TLGs. Finally, we propose a TLF-based approach to perform logic synthesis for majority-gatebased emerging nanotechnologies.
Lógica de Limiar (Threshold Logic) é um promissor paradigma alternativo para implementar funções Booleanas is projetos de circuitos digitais. Uma função limiar pode ser definida como uma função Booleana onde a saída é avaliada em termos dos pesos das entradas e um valor de threshold. Embora esse assunto tenha sido investigado desde a década de 1960, a lacuna por implementações em hardware eficientes para funções threshold resultaram em um menor interesse no desenvolvimento de um fluxo de projeto baseado em threshold logic. No entanto, para algumas tecnologias emergentes como memristors, spintronic e diodos de tunelamento ressonantes (RTD), essa estratégia de projeto se mostra mais apropriada que os circuitos CMOS tradicionais baseados em chaves lógicas. Portanto, a pesquisa e o desenvolvimentos de métodos de síntese e verificação aplicáveis a circuitos threshold multi-níveis são necessárias. As ferramentas estado-da-arte para a síntese de circuitos threshold realizam um mapeamento tecnologico genérico, sem considerar informações de propriedades threshold, e depois realizam uma resíntese para cada nodo do circuito mapeado. Este trabalho apresenta a primeira abordagem efetiva de mapeamento tecnológico para portas lógicas threshold (TLGs), baseada em identificar funções threshold durante o mapeamento. Essa abordagem habilita a exploração do espaço de busca em todo o circuito, procurando por uma cobertutra threshold logic. Como consequência, os resultados em termos de área e desempenho são melhorados, assim como a escalabilidade do circuito. Uma segunda contribuição introduzida nesse trabalho é melhora da qualidade dos resultados explorando cortes redundantes de uma maneira mais eficiente. Finalmente, o mapeador tecnológico proposto também é capaz de otimizar diferente estimativas de área dos TLGs: o somatório total de pesos e valor de threshold; o somatório total de entradas; e o número total de TLGs.

Programmable Logic Controllers (PLCs) are widely used devices controlling industrial machines and processes and many other diverse applications, requiring primarily, combinatorial logic and sequential control. The PLC is a hidden technology, little known by the general public and overlooked in academic historical studies of technology. The research reported in this thesis aims to address this lack of awareness. The thesis explores the development of sequential and combinatorial logic control technologies, the emergence of the PLC, its subsequent development and its industrial applications. Patents and first- hand accounts and experiences from senior industrial engineers in a number of diverse manufacturing industries have been used as the primary research sources since, as a hidden technology, academic historical accounts are sparse. This approach illustrates, through using the PLC as an example, a potential method of studying other, unrelated hidden technologies. The research has revealed the influence of geography, industrial settings and earlier engineering practices on the design, selection and application of PLC control technologies, and comments on the how these influences define specific communities of practice.

Os avanços da indústria de semicondutores nas últimas décadas foram baseados fortemente na contínua redução de tamanho dos dispositivos CMOS fabricados. Os usos de dispositivos CMOS dependem profundamente da lógica de portas E/OU/INV. À medida que os dispositivos CMOS estão atingindo oslimites fisicos, pesquisadores aumento esforço para prolongar a vida útil da tecnologia CMOS. Também é necessário investigar dispositivos alternativos, que em muitos casos implicam no uso de operações lógicas básicas diferentes. Como as ferramentas comerciais de síntese não são capazes de manipular eficientemente estas tecnologias Esta tese de doutorado foca em produzir algoritmos eficientes para projeto de circuitos tanto em CMOS quanto em novas tecnologias, integrando estes algorithmos em fluxos de projeto. Para esta tarefa, aplicamos a técnica da composição functional, para sintetizar eficiente tanto em CMOS quanto em tecnologias emergentes. A composição funcional é uma abordagem de síntese de baixo para cima, provendo flexibilidade para implementar algoritmos com resultados ótimos ou sub-ótimos para diferentes tecnologias. A fim de investigar como a composição funcional se compara às abordagens de síntese estado-da-arte, propomos aplicar esse paradigma de síntese em seis cenários diferentes. Dois deles se concentram em circuitos baseados em CMOS e outros quatro em circuitos baseados em tecnologias emergentes. Em relação a circuitos baseados em CMOS, investigamos a composição funcional para fatoração de funções multi-saídas, aplicadas em um fluxo de resíntese. Também manipulamos funções aproximadas, a fim de sintetizar módulos de redundância tripla aproximada. No que diz respeito as tecnologias emergentes, exploramos a composição funcional através de diodos spintrônicos e outras abordagens promissoras com base em diferentes implementações de lógica: a lógica de limiar, lógica majoritária e lógica de implicação. Resultados apresentam uma melhoria considerável em relação aos métodos estadoda- arte tanto para aplicações CMOS quanto aplicações de tecnologias emergentes, demonstrando a capacidade de lidar com diferentes tecnologias e mostrando a possibilidade de melhorar tecnologias ainda não exploradas.
The advances in semiconductor industry over the last decades have been strongly based on continuous scaling down of dimensions in manufactured CMOS devices. The use of CMOS devices profoundly relies on AND/OR/Inverter logic. As the CMOS scaling is reaching its physical limits, researchers increase the effort to prolong the CMOS life. Also, it is necessary to investigate alternative devices, which in many cases implies the use of different basic logic operations. As the commercial synthesis tools are not able to handle these technologies efficiently, there is an opportunity to research alternative logic implementations better suited for these new devices. This thesis focuses on presenting efficient algorithms to design circuits in both CMOS and new technologies while integrating these algorithms into regular design flows. For this task, we apply the functional composition technique, to efficiently synthesize both CMOS and emerging technologies. The functional composition is a bottom-up synthesis approach, providing flexibility to implement algorithms with optimal or suboptimal results for different technologies. To investigate how the functional composition compares to the state-of-the-art synthesis methods, we propose to apply this synthesis paradigm into six different scenarios. Two of them focus on CMOS-based circuits, and other four are based on emerging technologies. Regarding CMOSbased circuits, we investigate functional composition to investigate multi-output factorization in a circuit resynthesis flow. Also, we manipulate approximate functions to synthesize approximate triple modular redundancy (ATMR) modules. Concerning emerging technologies, we explore functional composition over spin-diode circuits and other promising approaches based on different logic implementations: threshold logic, majority logic, and implication logic. Results present a considerable improvement over the state-of-the-art methods for both CMOS and emerging technologies applications, demonstrating the ability to handle different technologies and showing the possibility to improve technologies not explored yet.

Circuitos baseados em portas lógicas de limiar (threshold logic gates – TLG) vem sendo estudados como uma alternativa promissora em relação ao tradicional estilo lógico CMOS, baseado no operadores AND e OR, na construção de circuitos integrados digitais. TLGs são capazes de implementar funções Booleanas mais complexas em uma única porta lógica. Diversos novos dispositivos, candidatos a substituir o transistor MOS, não se comportam como chaves lógicas e são intrinsicamente mais adequados à implementação de TLGs. Exemplos desses dispositivos são os memristores, spintronica, diodos de tunelamento ressonante (RTD), autômatos celulares quânticos (QCA) e dispositivos de tunelamento de elétron único (SET). Para o desenvolvimento de um fluxo de projeto de circuitos integrados baseados em lógica threshold, duas etapas são fundamentais: (1) identificar se uma dada função Booleana corresponde a uma função lógica threshold (TLF), isto é, pode ser implementada em um único TLG e computar os pesos desse TLG; (2) se uma função não é identificada como TLF, outro método de síntese lógica deve construir uma rede de TLGs otimizada que implemente a função. Este trabalho propõe métodos para atacar cada um desses dois problemas, e os resultados superam os métodos do estado-da-arte. O método proposto para realizar a identificação de TLFs é o primeiro método heurístico capaz de identificar todas as funções de cinco e seis variáveis, além de identificar mais funções que os demais métodos existentes quando o número de variáveis aumenta. O método de síntese de redes de TLGs é capaz de sintetizar circuitos reduzindo o número de portas TLG utilizadas, bem como a profundidade lógica e o número de interconexões. Essa redução é demonstrada através da síntese dos circuitos de avaliação da MCNC em comparação com os métodos já propostos na literatura. Tais resultados devem impactar diretamente na área e desempenho do circuito.
In this work, a novel method to synthesize digital integrated circuits (ICs) based on threshold logic gates (TLG) is proposed. Synthesis considering TLGs is quite relevant, since threshold logic has been revisited as a promising alternative to conventional CMOS IC design due to its suitability to emerging technologies, such as resonant tunneling diodes, memristors and spintronics devices. Identification and synthesis of threshold logic functions (TLF) are fundamental steps for the development of an IC design flow based on threshold logic. The first contribution is a heuristic algorithm to identify if a function can be implemented as a single TLG. Furthermore, if a function is not detected as a TLF, the method uses the functional composition approach to generate an optimized TLG network that implements the target function. The identification method is able to assign optimal variable weights and optimal threshold value to implement the function. It is the first heuristic algorithm that is not based on integer linear programming (ILP) that is able to identify all threshold functions with up to six variables. Moreover, it also identifies more functions than other related heuristic methods when the number of variables is more than six. Differently from ILP based approaches, the proposed algorithm is scalable. The average execution time is less than 1 ms per function. The second major contribution is the constructive process applied to generate optimized TLG networks taking into account multiple goals and design costs, like gate count, logic depth and number of interconnections. Experiments carried out over MCNC benchmark circuits show an average gate count reduction of 32%, reaching up to 54% of reduction in some cases, when compared to related approaches.

This thesis is a study of the relationship between 'nature' and 'spirit' in the philosophies of F.W.J. Schelling and G.W.F. Hegel. I aim to show that Schelling and Hegel are involved in a shared task of conceiving spiritual freedom as a necessary outcome of nature's inner, rational development. I argue that by interpreting spirit as 'emergent' from nature, the absolute idealists develop a 'third way' beyond Cartesian dualism and monist naturalism. For on the idealist account, nature and spirit are neither ontologically discontinuous, as if separated by an insurmountable 'gap', nor are they identical, as if spirit were simply a 'second nature'. Rather, according to both Schelling and Hegel, spirit emerges from nature as its ontologically distinct and non-natural telos. What makes Schelling's and Hegel's philosophies of nature so unique, however, is not simply that they present spiritual freedom as dependent upon nature, but that the ontological specificity of spirit is shown to be rationally necessary. In fact, neither the early Schelling nor Hegel is concerned with the historical emergence of spirit. Rather, both philosophers see the 'emergence' of spirit as an atemporal feature of being that must be derived through sheer reason—be it Schelling’s method of 'depotentiation' or Hegel's dialectical logic. I therefore argue that by bracketing the question of historical emergence, Schelling and Hegel each develop a distinctive logic of emergence whereby spiritual freedom is shown to be necessary thanks to the ontological structure of the impersonal, natural world. In my concluding chapter, I consider Schelling's argument in his Berlin lectures of the 1840s that the idealist logic of emergence must be supplemented with a speculative consideration of historical emergence if philosophy is to be a complete science of reality. From this perspective, it looks as though both Hegel's and the early Schelling's 'logics of emergence', despite all their promise, presuppose the idea that nature's necessary stages need not express themselves in temporal succession (as do the necessary stages of human history) in order for them to be fully realised. I conclude the thesis by suggesting that Schelling's Ages of the World was meant to overcome this apparent limit of the 'logic of emergence' without abandoning its fundamental aims. For in the Ages, nature's rationally necessary development is presented as unfolding in time, and time is understood as nothing other than the actual development of nature into spirit.

Caregivers often associate fevers with permanent harm and bring children to emergency departments (EDs) unnecessarily. However, families using EDs for nonurgent complaints often have difficulty accessing quality primary care. Mutual misconceptions among caregivers and healthcare providers regarding nonurgent ED use are a barrier to implementing meaningful interventions. The purpose of this project was to identify dominant themes in caregivers’ narratives about bringing children to the ED for nonurgent fevers. Thirty caregivers were recruited in a pediatric ED for participation in qualitative semi-structured interview from August to November 2014. Interview transcripts were coded and analyzed for themes. Caregivers’ decisions to come to the ED revolved around their need for reassurance that children were not in danger. Several major themes emerged: caregivers came to the ED when they felt they had no other options; parents feared that fevers would result in seizures; caregivers frequently drew on family members and the internet for health information; and many families struggled to access their PCPs for sick care due to challenging family logistics. Reducing nonurgent ED utilization requires interventions at the individual and structural level. Individual-level interventions should empower caregivers to manage fevers and other common illnesses at home. However, such interventions may have limited impact on utilization outcomes among families with poor access to primary care. Afterhours primary care should be expanded to accommodate families with rigid work schedules and limited transportation resources.

Geographies of Responsibility: The Cultural Logic of 21st Century Weather Emergencies analyzes the role of narrative in contemporary severe weather events. The speed and diversity of media through which we now communicate "the weather" significantly impact how U.S. communities experience these events and their possible social, cultural, and political meanings. This project explores four weather emergencies, covering physical geographies of the far northwest, Great Plains, mid-Atlantic, and Caribbean, that were circulated and reframed via a range of media--from newspapers to television, social, and new media--who discussed these events, and to what ends. Chapter 1 examines reporting on the 2004 Alaska wildfires directed at U.S. national and Alaska state communities to explore the importance of the "nation" as a continuing relevant relative spatial scale. Chapter 2 investigates the 2007 Greensburg tornado and subsequent "green" (re)development of the town. Chapter 3 analyzes the 2010 "Snowmageddon" blizzards in Washington, D.C., which initiated "playful" acts that highlighted how urban economic realities and historical social geographies of race are embedded in particular urban sites. Chapter 4 explores the 2010 Haiti earthquake, which evoked economies of responsibility across multiple scales of mobilization that reiterated the cultural and historical "weather map" laid down by Hurricane Katrina. These mass mediated weather events each mobilized attention and response through narratives that evoked an emergency to communities across multiple geographic scales put into relationships with one another through storylines far more complex than an analysis of how "global" and local weather systems co-create each other.

For all the successes of the two edifices of modern physics, quantum theory and Einstein's relativity, a fundamental description of the Universe as a whole -- a theory that informs as to the true nature of reality -- has continued to elude science. This thesis describes the development and evolution of a new paradigm called Process Physics, a radical information-theoretic modelling of reality. It is argued that the failure of the extant approaches in physics is the direct consequence of limitations stemming from the mathematization, language and methodology of theoretical physics: the limitations of the postulated background spatial concepts and geometric modelling of time, the limitations of quantum theory in its failure to account for the measurement process and classicality; and the limitations of formal systems. In contrast, Process Physics utilizes the limitations of logic first identified by Godel and asserts the priority of process and relational endophysics, realized via a stochastic, autopoietic bootstrap system whose properties emerge a posteriori rather than being assumed a priori. The work is arranged in two parts. Part I discusses the historical, philosophical, and metaphysical foundations of physics to consider how the prevailing views in modern physics arose and what this revealed and contributed to the development of Process Physics. Part II describes the fundamentals of the new theory and its implementation, and demonstrates the viability of looking outside the current paradigms by showing that Process Physics yields unified emergent phenomena that permit an understanding of fundamental processes and penultimately motivate both quantum theory and relativity as relevant higher-level descriptors within their respective domains.

Reversible circuits are similar to conventional logic circuits except that they are built from reversible gates. In reversible gates, there is a unique, one-to-one mapping between the inputs and outputs, not the case with conventional logic. Also, reversible gates require constant ancilla inputs for reconfiguration of gate functions and garbage outputs that help in keeping reversibility. Reversible circuits hold promise in futuristic computing technologies like quantum computing, quantum dot cellular automata, DNA computing, optical computing, etc. Thus, it is important to minimize parameters such as ancilla and garbage bits, quantum cost and delay in the design of reversible circuits. The first contribution of this dissertation is the design of a new reversible gate namely the TR gate (Thapliyal-Ranganathan) which has the unique structure that makes it ideal for the realization of arithmetic circuits such as adders, subtractors and comparators, efficient in terms of the parameters such as ancilla and garbage bits, quantum cost and delay. The second contribution is the development of design methodologies and a synthesis framework to synthesize reversible data path functional units, such as binary and BCD adders, subtractors, adder-subtractors and binary comparators. The objective behind the proposed design methodologies is to synthesize arithmetic and logic functional units optimizing key metrics such as ancilla inputs, garbage outputs, quantum cost and delay. A library of reversible gates such as the Fredkin gate, the Toffoli gate, the TR gate, etc. was developed by coding in Verilog for use during synthesis. The third contribution of this dissertation is the set of methodologies for the design of reversible sequential circuits such as reversible latches, flip-flops and shift registers. The reversible designs of asynchronous set/reset D latch and the D flip-flop are attempted for the first time. It is shown that the designs are optimal in terms of number of garbage outputs while exploring the best possible values for quantum cost and delay. The other important contributions of this dissertation are the applications of reversible logic as well as a special class of reversible logic called conservative reversible logic towards concurrent (online) and offline testing of single as well as multiple faults in traditional and reversible nanoscale VLSI circuits, based on emerging nanotechnologies such as QCA, quantum computing, etc. Nanoelectronic devices tend to have high permanent and transient faults and thus are susceptible to high error rates. Specific contributions include (i) concurrently testable sequential circuits for molecular QCA based on reversible logic, (ii) concurrently testable QCA-based FPGA, (iii) design of self checking conservative logic gates for QCA, (iv) concurrent multiple error detection in emerging nanotechnologies using reversible logic, (v) two-vectors, all 0s and all 1s, testable reversible sequential circuits.

This study seeks to examine the institutional logics and processual dynamics behind the emergence of sustainability reporting (hereafter SR) in Pakistan. It investigates both the emergence of the SR field, as well as logics and processes of the initiation and implementation of SR in eight organisations. This study utilises the institutional logics perspective (Thornton, Ocasio and Lounsbury, 2012) as an analytical framework for institutional and organisational analysis. Using this framework, Pakistani society is conceptualised and analysed as an interinstitutional system which provides the basis for understanding the field as well as organisational-level dynamics. The Pakistani SR field is conceptualised as a socially constructed space in which a variety of social actors, embedded in different institutional orders, are involved in the social construction of SR through constellations of subjective meanings and material practices (known as institutional logics). The theoretical perspective argues for the presence of multiple logics in a given field that both constrain and enable organisational and individual rationality for action. In order to explore these dynamics, this study uses an embedded case study design informed by semi-structured interviews and extensive documentary analysis. This study identifies the presence of multiple logics in the Pakistani SR field which are linked with the evolution of institutional orders. This study finds that the dominant orders of family and religion act as social constraints for the emergence of SR in Pakistan which is mainly driven by the combination of market, corporate and professional logics. These logics, which collectively make a business case, are propagated mainly by the leading corporates, professional accounting bodies, non-governmental organisations and consultants. These actors through different events (e.g. award ceremonies, conferences, seminars and workshops) are involved in the institutional work for shaping SR. Organisational analysis finds that the decision to initiate SR and the implementation process is mainly driven by institutional forces that are mediated by organisational dynamics and situational contingencies. A combination of rationales is used by corporate managers of the eight organisations for justifying their reporting decision.

As complementary metal-oxide semiconductor (CMOS) technology faces more and more severe physical barriers down the path of continuously feature size scaling, innovative nano-scale devices and other post-CMOS technologies have been developed to enhance future circuit design and computation. These nanotechnologies have shown promising potentials to achieve magnitude improvement in performance and integration density. The substitution of CMOS transistors with nano-devices is expected to not only continue along the exponential projection of Moore's Law, but also raise significant challenges and opportunities, especially in the field of electronic design automation. The major obstacles that the designers are experiencing with emerging nanotechnology design include: i) the existing computer-aided design (CAD) approaches in the context of conventional CMOS Boolean design cannot be directly employed in the nanoelectronic design process, because the intrinsic electrical characteristics of many nano-devices are not best suited for Boolean implementations but demonstrate strong capability for implementing non-conventional logic such as threshold logic and reversible logic; ii) due to the density and size factors of nano-devices, the defect rate of nanoelectronic system is much higher than conventional CMOS systems, therefore existing design paradigms cannot guarantee design quality and lead to even worse result in high failure ratio. Motivated by the compelling potentials and design challenges of emerging post-CMOS technologies, this dissertation work focuses on fundamental design methodologies to effectively and efficiently achieve high quality nanoscale design. A novel programmable logic element (PLE) is first proposed to explore the versatile functionalities of threshold gates (TGs) and multi-threshold threshold gates (MTTGs). This PLE structure can realize all three- or four-variable logic functions through configuring binary control bits. This is the first single threshold logic structure that provides complete Boolean logic implementation. Based on the PLEs, a reconfigurable architecture is constructed to offer dynamic reconfigurability with little or no reconfiguration overhead, due to the intrinsic self-latching property of nanopipelining. Our reconfiguration data generation algorithm can further reduce the reconfiguration cost. To fully take advantage of such threshold logic design using emerging nanotechnologies, we also developed a combinational equivalence checking (CEC) framework for threshold logic design. Based on the features of threshold logic gates and circuits, different techniques of formulating a given threshold logic in conjunctive normal form (CNF) are introduced to facilitate efficient SAT-based verification. Evaluated with mainstream benchmarks, our hybrid algorithm, which takes into account both input symmetry and input weight order of threshold gates, can efficiently generate CNF formulas in terms of both SAT solving time and CNF generating time. Then the reversible logic synthesis problem is considered as we focus on efficient synthesis heuristics which can provide high quality synthesis results within a reasonable computation time. We have developed a weighted directed graph model for function representation and complexity measurement. An atomic transformation is constructed to associate the function complexity variation with reversible gates. The efficiency of our heuristic lies in maximally decreasing the function complexity during synthesis steps as well as the capability to climb out of local optimums. Thereafter, swarm intelligence, one of the machine learning techniques is employed in the space searching for reversible logic synthesis, which achieves further performance improvement. To tackle the high defect-rate during the emerging nanotechnology manufacturing process, we have developed a novel defect-aware logic mapping framework for nanowire-based PLA architecture via Boolean satisfiability (SAT). The PLA defects of various types are formulated as covering and closure constraints. The defect-aware logic mapping is then solved efficiently by using available SAT solvers. This approach can generate valid logic mapping with a defect rate as high as 20%. The proposed method is universally suitable for various nanoscale PLAs, including AND/OR, NOR/NOR structures, etc. In summary, this work provides some initial attempts to address two major problems confronting future nanoelectronic system designs: the development of electronic design automation tools and the reliability issues. However, there are still a lot of challenging open questions remain in this emerging and promising area. We hope our work can lay down stepstones on nano-scale circuit design optimization through exploiting the distinctive characteristics of emerging nanotechnologies.
Ph. D.

Programmable reversible logic is emerging as a prospective logic design style for implementation in modern nanotechnology and quantum computing with minimal impact on circuit heat generation. Recent advances in reversible logic using and quantum computer algorithms allow for improved computer architecture and arithmetic logic unit designs. In this paper, a 2*2 Swap gate which is a reduced implementation in terms of quantum cost and delay to the previous Swap gate is presented. Next, a novel 3*3 programmable UPG gate capable of calculating the fundamental logic calculations is presented and verified, and its advantages over the Toffoli and Peres gates are discussed. The UPG is then implemented in a reduced design for calculating n-bit AND, n-bit OR and n-bit ZERO calculations. Then, two 3*3 RMUX gates capable of multiplexing two input values with reduced quantum cost and delay compared to the previously existing Fredkin gate is presented and verified. Next, 4*4 reversible gate is presented and verified which is capable of producing the calculations necessary for two-bit comparisons. The UPG and RC are implemented in the design of novel sequential and tree-based comparators. Then, two novel 4*4 reversible logic gates (MRG and PAOG) are proposed with minimal delay, and may be configured to produce a variety of logical calculations on fixed output lines based on programmable select input lines. A 5*5 structure (MG) is proposed that extends the capabilities of both the MRG and PAOG. The comparator designs are verified and its advantages to previous designs are discussed. Then, reversible implementations of ripple-carry, carry-select and Kogge-Stone carry look-ahead adders are analyzed and compared. Next, implementations of the Kogge-Stone adder with sparsity-4, 8 and 16 were designed, verified and compared. The enhanced sparsity-4 Kogge-Stone adder with ripple-carry adders was selected as the best design, and its implemented in the design of a 32-bit arithmetic logic unit is demonstrated. The proposed ALU design is verified and its advantages over the only existing ALU design are quantitatively analyzed.

As transistor sizes scale down and levels of integration increase, leakage power has become a critical problem in modern low-power microprocessors. This is especially true for ultra-low-voltage (ULV) circuits, where high levels of leakage force designers to chose relatively high threshold voltages, which limits performance. In this thesis, an industry-standard technique known as power-gating is explored, whereby transistors are used to disconnect the power from idle portions of a chip. Present power-gating implementations suffer from limitations including non-zero off-state leakage, which can aggregate to a large amount of wasted energy during long idle periods, and high energy overhead, which limits its use to long-term system-wide sleep modes. As this thesis will show however, by vastly increasing the effectiveness of power-gating through the use of emerging technologies, and by implementing aggressive hardware-oriented power-gating policies, leakage in microprocessors can be eliminated to a large extent. This allows the threshold voltage to be lowered, leading to ULV microprocessors with both low switching energy and high performance. The first emerging technology investigated is the Nanoelectromechnical-Systems (NEMS) switch, which is a CMOS-compatible mechanical relay with near-infinite off-resistance and low on-resistance. When used for power-gating, this switch completely eliminates off-state leakage, yet is compact enough to be contained on die. This has tremendous benefits for applications with long sleep times. For example, a NEMS-power-gated architecture performing an FFT per hour consumes 30 times less power than a transistor-power-gated architecture. Additionally, the low on-resistance can lower power-gating area overhead by 36-83\%. The second technology targets the high energy overhead associated with powering a circuit on and off. This thesis demonstrates that a new logic style specifically designed for ULV operation, Sense Amplifier Pass Transistor Logic (SAPTL), requires power-gates that are 8-10 times smaller, and consumes up to 15 times less boot-up energy, compared to static-CMOS. These abilities enable effective power-gating of an SAPTL circuit, even for very short idle periods. Microprocessor simulations demonstrate that a fine-grained power-gating policy, along with this drastically lower overhead, can result in up to a 44\% drop in energy. Encompassing these investigations is an energy estimation framework built around a cycle-accurate microprocessor simulator, which allows a wide range of circuit and power-gating parameters to be optimized. This framework implements two hardware-based power-gating schedulers that are completely invisible to the OS, and have extremely low hardware overhead, allowing for a large number of power-gated regions. All together, this thesis represents the most complete and forward-looking study on power-gating in the ULV region. The results demonstrate that aggressive power-gating allows designers to leverage the very low switching energy of ULV operation, while achieving performance levels that can greatly expand the capabilities of energy-constrained systems.
Ph. D.

La complexité croissante des systèmes numériques amène les architectures reconfigurable telles que les Field Programmable Gate Arrays (FPGA) à être très fortement demandés en raison de leur facilité de (re)programmabilité et de leurs faibles coûts non récurrents (NRE). La re-configurabilité est réalisée grâce à de nombreux point mémoires de configuration. Cette re-configurabilité se traduit par une extrême flexibilité des applications implémentées et dans le même temps par une perte en surface, en performances et en puissance par rapport à des circuits intégrés spécifiques (ASIC) pour la même fonctionnalité. Dans cette thèse, nous proposons la conception de FPGA avec différentes technologies 3D pour une meilleure efficacité. Nous intégrons les blocs à base de mémoire résistives pour réduire la longueur des fils de routage et pour élargir l'employabilité des FPGAs pour des applications non-volatiles de faible consommation. Parmi les nombreuses technologies existantes, nous nous concentrons sur les mémoires à base d'oxyde résistif (OxRRAM) et les mémoires à pont conducteur (CBRAM) en évaluant les propriétés uniques de ces technologies. Comme autre solution, nous avons conçu un nouveau FPGA avec une intégration monolithique 3D (3DMI) en utilisant des interconnexions haute densité. A partir de deux couches avec l'approche logique-sur-mémoire, nous examinons divers schémas de partitionnement avec l'augmentation du nombre de couches actives intégrées pour réduire la complexité de routage et augmenter la densité de la logique. Sur la base des résultats obtenus, nous démontrons que plusieurs niveaux 3DMI est une alternative solide pour l'avenir de mise à l'échelle de la technologie
The ever increasing complexity of digital systems leads the reconfigurable architectures such as Field Programmable Gate Arrays (FPGA) to become highly demanded because of their in-field (re)programmability and low nonrecurring engineering (NRE) costs. Reconfigurability is achieved with high number of point configuration memories which results in extreme application flexibility and, at the same time, significant overheads in area, performance, and power compared to Application Specific Integrated Circuits (ASIC) for the same functionality. In this thesis, we propose to design FPGAs with several 3D technologies for efficient FPGA circuits. First, we integrate resistive memory based blocks to reduce the routing wirelength and widen FPGA employability for low-power applications with non-volatile property. Among many technologies, we focus on Oxide Resistive Memory (OxRRAM) and Conductive Bridge Resistive Memory (CBRAM) devices by assessing unique properties of these technologies in circuit design. As another solution, we design a new FPGA with 3D monolithic integration (3DMI) by utilizing high-density interconnects. Starting from two layers with logic-on-memory approach, we examine various partitioning schemes with increased number of integrated active layers to reduce the routing complexity and increase logic density. Based on the obtained results, we demonstrate that multi-tier 3DMI is a strong alternative for future scaling

The reversible logic has promising applications in emerging computing paradigms, such as quantum computing, quantum dot cellular automata, optical computing, etc. In reversible logic gates, there is a unique one-to-one mapping between the inputs and outputs. To generate a useful gate function, the reversible gates require some constant ancillary inputs called ancilla inputs. Also to maintain the reversibility of the circuits some additional unused outputs are required that are referred to as the garbage outputs. The number of ancilla inputs, the number of garbage outputs and quantum cost plays an important role in the evaluation of reversible circuits. Thus minimizing these parameters are important for designing an efficient reversible circuit. Reversible circuits are of highest interest in optical computing, quantum dot cellular automata and quantum computing. The quantum gates perform an elementary unitary operation on one, two or more two-state quantum systems called qubits. Any unitary operation is reversible in nature, and hence, quantum networks are also reversible, to conclude the quantum computers must be built from reversible logic components. The main contribution of this dissertation is the design exploration and application of reversible circuits in emerging nanotechnologies. The emerging technologies explored in this work are 1) Optical quantum computing 2) Quantum computing. The first contribution of this dissertation is Mach-Zehnder interferometer based design of all optical reversible binary adder. The all optical reversible adder design is based on two new optical reversible gates referred as optical reversible gate I (ORG-I) and optical reversible gate II (ORG-II) and the existing all optical Feynman gate. The two new reversible gates ORG-I and ORGI-II have been proposed and can implement a reversible adder with a reduced optical cost which is equal to the number of MZI switches required, less propagation delay, and with zero overhead in terms of number of ancilla inputs and the garbage outputs. The proposed all optical reversible adder design based on the ORG-I and ORG-II reversible gates are compared and shown to be better than the other existing designs of reversible adder proposed in the non-optical domain in terms of number of MZI switches, delay, the number of ancilla inputs and the garbage outputs. The proposed all optical reversible adder will be a key component of an all optical reversible arithmetic logical unit (ALU), that is a quite essential component in a wide variety of optical signal processing applications. In the existing literature, the NAND logic based implementation is the only known implementation available for reversible gates and its functions. There is a lack of research in the direction of NOR logic based implementation of reversible gates and functions. The second contribution of this dissertation is the design of NOR logic based n-input and n-output reversible gates, one of which can be efficiently mapped into optical computing using the Mach-Zehnder interferometer (MZI), while the other can be mapped efficiently in optical computing using the linear optical quantum gates. The proposed reversible NOR gates work as a corresponding NOR counterpart of NAND logic based Toffoli gates. The proposed optical reversible NOR logic gates can implement the reversible boolean logic functions with less number of linear optical quantum logic gates with reduced optical cost and propagation delay compared to the implementation using existing optical reversible NAND gates. It is illustrated that an optical reversible gate library having both optical Toffoli gate and the proposed optical reversible NOR gate is superior compared to the library containing only the optical Toffoli gate: (i) in terms of number of linear optical quantum gates when implemented using linear optical quantum computing (LOQC), (ii) in terms of optical cost and delay when implemented using the Mach-Zehnder interferometer. The third contribution of this dissertation is a binary tree-based design methodology for a NxN reversible multiplier. The proposed binary tree-based design methodology for a NxN reversible multiplier performs the addition of partial products in parallel using the reversible ripple adders with zero ancilla bit and zero garbage bit; thereby, minimizing the number of ancilla and garbage bits used in the design. The proposed design methodology shows improvements in terms of number of ancilla inputs and garbage outputs compared to all the existing reversible multiplier designs. The methodology is also extended to the design of NxN reversible signed multiplier based on modified Baugh-Wooley multiplication methodology.

The soft budget constraint - today a popular metaphor - is a paradox. In socialist economies, it implies that the state tends to bail out state-owned firms in financial trouble, in spite of the tremendous performance problems of the entire system that result. When the system broke down, the soft budget constraint was expected to disappear. However, it seems to persist, and its persistence appears to hamper the transition process itself. This study seeks an answer to this paradox. It aims at increasing our understanding of why the soft budget constraint exists. By investigating state-owned enterprises in Tanzania before, during and after socialism, the prevalence of the soft budget constraint is examined and an explanation of its existence is suggested. The approach is institutional. The soft budget constraint is defined as an informal institution and an invisible-hand explanation of its emergence, persistence and logic is applied. The study shows that the soft budget constraint emerged as an unintended consequence of the establishment of the Tanzanian socialist system in the 1970s. A behavioural solution to recurrent systemic problems was offered, and thus the soft budget constraint performed several functions. Once established, its very existence set off a cumulative process of self-generation. Four reinforcement mechanisms that accounted for its prevalence during Tanzanian socialism are identified. Its character as a behavioural rule helps to explain why it persisted during market-oriented reform, initiated in the mid-1980s. The soft budget constraint was part of the socialist heritage, was adapted to systemic change, and influenced the direction and character of this change.
Diss. Stockholm : Handelshögsk.

The memristor is an emerging nano-device. Low power operation, high density, scalability, non-volatility, and compatibility with CMOS Technology have made it a promising technology for memory, Boolean implementation, computing, and logic systems. This dissertation focuses on testing and design of such applications. In particular, we investigate on testing of memristor-based memories, design of memristive implementation of Boolean functions, and reliability and design of neuromorphic computing such as neural network. In addition, we show how to modify threshold logic gates to implement more functions. Although memristor is a promising emerging technology but is prone to defects due to uncertainties in nanoscale fabrication. Fast March tests are proposed in Chapter 2 that benefit from fast write operations. The test application time is reduced significantly while simultaneously reducing the average test energy per cell. Experimental evaluation in 45 nm technology show a speed-up of approximately 70% with a decrease in energy by approximately 40%. DfT schemes are proposed to implement the new test methods. In Chapter 3, an Integer Linear Programming based framework to identify current-mode threshold logic functions is presented. It is shown that threshold logic functions can be implemented in CMOS-based current mode logic with reduced transistor count when the input weights are not restricted to be integers. Experimental results show that many more functions can be implemented with predetermined hardware overhead, and the hardware requirement of a large percentage of existing threshold functions is reduced when comparing to the traditional CMOS-based threshold logic implementation. In Chapter 4, a new method to implement threshold logic functions using memristors is presented. This method benefits from the high range of memristor’s resistivity which is used to define different weight values, and reduces significantly the transistor count. The proposed approach implements many more functions as threshold logic gates when comparing to existing implementations. Experimental results in 45 nm technology show that the proposed memristive approach implements threshold logic gates with less area and power consumption. Finally, Chapter 5 focuses on current-based designs for neural networks. CMOS aging impacts the total synaptic current and this impacts the accuracy. Chapter 5 introduces an enhanced memristive crossbar array (MCA) based analog neural network architecture to improve reliability due to the aging effect. A built-in current-based calibration circuit is introduced to restore the total synaptic current. The calibration circuit is a current sensor that receives the ideal reference current for non-aged column and restores the reduced sensed current at each column to the ideal value. Experimental results show that the proposed approach restores the currents with less than 1% precision, and the area overhead is negligible.

This thesis investigates the relationship between contemporary climate protest movements (Extinction Rebellion and Fridays For Future) and governmental bodies in European countries that declared a climate emergency in 2019. The primary contribution of this thesis is to demonstrate how emerging communication practices by these movements compare to the perceived influence of such practices among political decisionmakers in their governing bodies’ votes for a climate emergency declaration. Twitter content (tweets by movement accounts) surrounding protest actions of the climate movements was coded using concepts deduced from theoretical literature of participation, media and communication. Themes induced from this data were also used for coding. A thematic analysis of empirical interview text from semi-structured interviews of nine politicians in eight governmental bodies (six German city councils, that of Innsbruck, Austria and the Swiss cantonal parliament of Vaud) on this subject matter was done similarly. Relational thematic analyses of both datasets influenced the coding of one another. A frame analysis grounded in these data studied the use of social media imagery and text by the two movements. Another look at the interview data reflects the influence these movements had on climate emergency declarations via comparison of politicians’ stated impressions of the movements’ participation/influences with formations of tweeted movement frames. The data support the hypothesis that citizens engage via the connective power of personalized participatory culture on social media, enabling political participation. Today, we see a shift away from a political logic of social movements abiding to strong shared identity and meaning through frames of collective action. Instead, a social media logic, which aims to achieve the same functions, operates in loosely networked movements based on individualized frames of youth identity. This ‘connective identity’ bridges the participatory culture of social media with offline political participation in the streets and halls of power.

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Direct investment in the sanitation sector is a phenomenon that deserves attention due to these market failures, and therefore the regulation through public policies, among other variables of institutional character, in company decisions. This work aims to identify the determinants of the choice of destination countries among emerging countries, to direct investments in sanitation. Based on the theoretical framework that combines economic approaches to internationalization of companies with the microeconomics of industrial organization, also inserting elements of new institutional economics, specific hypotheses were generated regarding these determinants. Raise the hypotheses that foreign direct investment in sanitation in developing countries is related to the level of economic development, the existing infrastructure and institutional stability influences the choice of countries. To test the hypotheses, we propose an econometric approach, using a binary choice model (LOGIT) and to assess the dynamic effects, a model of LOGIT panel. Are used data from the PPI (Private Participation in Infrastructure), the World Bank and selected economic and institutional indicators, particularly on the institutional environment indices. As a result, in addition to confirming the proposed hypothesis, this study found a relationship of inverted "U" between per capita GDP and the likelihood of receiving direct investment in sanitation, suggesting a possible behavior of "crowding out" investment in some countries.
O investimento direto no setor de saneamento básico é um fenômeno que merece atenção devido às presentes falhas de mercado, e portanto, a regulação por meio das políticas públicas, entre outras variáveis de caráter institucional, nas decisões empresariais. Este trabalho tem como objetivo identificar os determinantes da escolha de países-destino, entre os países emergentes, para investimentos diretos em saneamento básico. Com base no referencial teórico que combina as abordagens econômicas da internacionalização de empresas com a microeconomia da organização industrial, inserindo também elementos da nova economia institucional, foram geradas hipóteses específicas quanto a esses determinantes. Levantam-se as hipóteses de que o investimento direto estrangeiro em saneamento nos países emergentes está relacionado ao nível de desenvolvimento econômico, à infraestrutura existente e a estabilidade institucional influencia na escolha dos países. Para testar as hipóteses, propõe-se uma abordagem econométrica, com a utilização de um modelo de escolha binária (LOGIT) e, para avaliar os efeitos dinâmicos, um modelo de LOGIT em painel. São utilizados dados da base PPI (Private Participation in Infrastructure), do Banco Mundial e indicadores econômicos e institucionais selecionados, particularmente índices sobre o ambiente institucional. Como resultado, além da confirmação das hipóteses propostas, este estudo encontrou uma relação de U invertido entre PIB per capita e a probabilidade de receber investimento direto em saneamento, sugerindo um possível comportamento de crowding out deste investimento em alguns países.

xvii, 191 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.
For over a century, researchers from diverse intellectual disciplines have tried to explain the emergence of regional business clusters. I contribute to research on cluster emergence by applying an institutional logics framework to model how cluster emergence is influenced by such factors as supportive institutional logics, knowledge spillover, labor pooling, and technological uncertainty. This study is guided by the research question: How do institutions, specifically, varying levels of a congruous institutional logic, affect regional cluster emergence? Using the passage of the 1978 Public Utility Regulatory Policies Act (PURPA) as a catalyst for business cluster emergence in the renewable energy sector, this study examines the emergence of wind and solar energy manufacturing clusters. I test hypotheses about the positive influences of a congruous institutional logic across U.S. metropolitan statistical areas to see if the relative prevalence of a congruous institutional logic results in more firms and greater levels of clustering. For example, a pro-environmental sentiment among human populations aligns, or in other words, is congruous, with renewable energy manufacturing. I use fixed effects estimation to test several hypotheses regarding positive direct and moderating effects of institutional alignment on cluster emergence. I find that congruous institutional logics have a positive direct influence on clustering, and as technological uncertainty increases, this positive direct influence is enhanced. I find only partial support for the moderating influence of congruous institutional logics on the positive direct effect of positive externalities on clustering. This study contributes to practice and theory by building a model and supporting hypotheses on the influence of institutional fit on regional cluster emergence.
Committee in charge: Michael Russo, Chairperson, Management; Jennifer Howard-Grenville, Member, Management; Alan Meyer, Member, Management; Glen Waddell, Outside Member, Economics

The growing applications for IoT devices have caused an increase in the study of low power consuming circuit design to meet the requirement of devices to operate for various months without external power supply. Scaling down the conventional CMOS causes various complications to design due to CMOS properties, therefore various non-conventional CMOS design techniques are being proposed that overcome the limitations. This thesis focuses on some of those emerging and novel low power design technique namely Adiabatic logic and low power devices like Magnetic Tunnel Junction (MTJ) and Carbon Nanotube Field Effect transistor (CNFET). Circuits that are used for large computations (multipliers, encryption engines) that amount to maximum part of power consumption in a whole chip are designed using these novel low power techniques.

The continuous scaling down of the metal-oxide-semiconductor field-effect transistor (MOSFET) has improved the performance of electronic appliances. Unfortunately, it has come to a stage where further scaling of the MOSFET is no longer possible due to the physical and the fabrication limitations. This has motivated researchers towards designing and fabricating novel devices that can replace MOSFET technology. Carbon Nanotube Field-Effect Transistors, Single Electron Tunneling Junctions, Nano-Magnetic Devices, and Spin Field-Effect Transistors are some prospective candidates that could replace MOSFET devices. In this dissertation, we have studied the computational performance of Nano−Magnetic Devices due to their attractive features such as room temperature operation, high density, robustness towards thermal noise, radiation hardened nature and low static power dissipation. In this work, we have established that data can be propagated in a causal fashion from a driver cell to the driven cells. We have fabricated a ferromagnetic wire architecture and used a magnetic force microscopy (MFM) tip to provide localized magnetic inputs. This experiment validated two important phenomena; (1) a clocking field is essential to propagate data and (2) upon removal of the clocking field data can be propagated according to the input data. Next, we have fabricated and captured MFM images of a nano-magnetic logic architecture that has computed the majority of seven binary variables. The architecture was designed by interconnecting three three-input majority logic gates with ferromagnetic and antiferromagnetic wire architectures. This seven input majority logic architecture can potentially implement eight different logic functions that could be configured in real-time. All eight functions could be configured by three control parameters in real-time (by writing logic one or zero to them). Even though we observed error-free operations in nano-magnetic logic architectures, it became clear that we needed better control (write/read/clock) over individual single layer nano-magnetic devices for successful long-term operation. To address the write/clock/read problems, we designed and fabricated amultilayer nano-magnetic device. We fabricated and performed a set of experiments with patterned multilayer stacks of Co/Cu/Ni80Fe20 with a bottom layer having a perpendicular magnetization to realize neighbor interactions between adjacent top layers of devices. Based on the MFM images, we conclude that dipolar coupling between the top layers of the neighboring devices can be exploited to construct three-input majority logic gates, antiferromagnetic and ferromagnetic wire architectures. Finally, we have experimentally demonstrated a magnetic system that could be used to solve quadratic optimization problems that arise in computer vision applications. We have harnessed the energy minimization nature of a magnetic system to directly solve a quadratic optimization process. We have fabricated a magnetic system corresponding to a real world image and have identified salient features with true positive rate more than 85%. These experimental results feature the potentiality of this unconventional computing method to develop a magnetic processor which solves such complex problems in few clock cycles.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Dans la France du milieu du Grand siècle, la tragédie est l’art de représenter des passions. Cette thèse questionne la façon dont Racine réussit, mieux que ses contemporains, à peindre l’image de la femme passionnée, tout en respectant les principes de son époque. Répondre à cette problématique exige, d’une part, l’étude de l’histoire des femmes au XVIIe siècle - cela pour montrer le rôle du poète dans l’évolution de l’image des femmes dans la littérature – et, d’autre part, l’examen des apports du Grand siècle car Racine semble s’inscrire dans une longue tradition qui remonte jusqu’aux Héroïdes d’Ovide. Grâce à une remarquable peinture des passions, le dramaturge nous familiarise avec l'univers des femmes. Nous ne tentons pas de découvrir, dans son univers, ni une femme avec les qualités du héros, ni une femme parfaite, mais une héroïne qui nous attire par les qualités que l’auteur lui a donné et sa position centrale dans l’ œuvre : c’est une femme qui va jusqu’au bout d’une passion destructrice. Ainsi, Racine, dans ses œuvres, grâce à sa maîtrise des règles de la tragédie et son talent pour bien choisir ses sources d’inspiration, crée de manière savant des personnages féminins qui trouvent leur force dans l’amour et la haine, et ce pour le plaisir du spectateur. Mais comment les comportements féminins d’une reine du XVIIe siècle peuvent-ils influencer les sentiments de la femme au XXIe siècle ? En tentant de répondre à cette question, nous nous approchons de notre objectif, car, dans les pièces de Racine, on entrevoit le reflet des femmes universelles
In the France of the middle of the Great Century, tragedy is the art of representing passions. This thesis questions how Racine succeeded, better than his contemporaries, in painting the image of the passionate woman, while respecting the principles of his time. Responding to this problem requires, on the one hand, the study of the history of women in the 17th century - to show the role of the poet in the evolution of the image of women in literature - and, on the other hand, an examination of the contributions of the Great Century, since Racine seems to be part of a long tradition that goes back to Ovid's Heroes. Thanks to a remarkable painting of passions, the playwright familiarizes us with the world of women. We are not trying to discover, in her universe, a woman with the qualities of the hero, nor a perfect woman, but a heroine who attracts us by the qualities the author has given her and her central position in the work: she is a woman who goes to the end of a destructive passion. Thus, Racine, in his works, thanks to her mastery of the rules of tragedy and her talent for choosing his sources of inspiration, skillfully creates female characters who find their strength in love and hatred, for the pleasure of the spectator. But how can the feminine behaviours of a queen of the 17th century influence the feelings of women in the 21st century? In trying to answer this question, we are getting closer to our goal, for in Racine's plays we glimpse the reflection of universal women

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In this MSc project an interpretation service was designed and implemented containing a knowledge base built from the integration of ontologies and a fuzzy inference system. Besides interpreting what is occurring in the environment, the main feature of this service is to provide additional information on the phenomenon being observed, such as neighboring risks. The knowledge base was generated with the help of experts in the field of emergency preparedness and response. For the real-time monitoring to be effective it is necessary that the data captured by sensors from the physical environment be interpreted in a fast and accurate way. Context interpretation can be either simple when handling information ambiguities and replication or highly complex when different contexts and events correlation are involved. Wireless sensors networks are increasingly being used as powerful tools for the monitoring of environments subject to life and assets risk situations, such as fires, toxic gas leaks and explosions. Emergency management systems that incorporate wireless sensor networks are being used to support emergency first responders in the decision making process where response time is crucial for the success of rescue operations. To validate the proposed interpretation service, implemented as a tool to aid in emergency situations, a use case was built using a local company plant. The context interpretation service built from the integration of ontologies and fuzzy techniques has shown to be a potential aid tool for the monitoring of physical environments subject to emergency situations
Neste trabalho um serviço de interpretação de contexto foi projetado e implementado contendo uma base de conhecimento formada pela integração de ontologias e por um sistema de inferência fuzzy. A principal característica desse serviço é fornecer informações adicionais sobre o fenômeno sendo observado, como por exemplo, riscos vizinhos a um incêndio. A base de conhecimento foi gerada com a ajuda de especialistas no domínio de preparação e resposta a emergências. Para que o monitoramento em tempo-real seja eficaz é necessário que os dados capturados por sensores no ambiente físico sejam interpretados de forma correta e rápida. A interpretação de contextos pode ser simples para tratar ambigüidades e repetição de informação ou bastante complexa envolvendo a correlação de diferentes eventos e contextos. Redes de sensores sem fio estão sendo utilizadas cada vez mais como poderosas ferramentas de monitoramento em ambientes sujeitos a situações de risco à vida e ao patrimônio, tais como incêndios, vazamentos de gases tóxicos e explosões. Sistemas de gerenciamento da emergência que integram redes de sensores sem fio vêm sendo utilizados como apoio à tomada de decisão para equipes de resposta a emergências em que o tempo-resposta nessas condições torna-se fator preponderante visando o sucesso de operações práticas de salvamento. De modo a validar o serviço de interpretação proposto e implementado como ferramenta de auxílio em palcos emergenciais, foi implementada uma prova de conceito referente a uma planta industrial de uma empresa situada no município de São Carlos. A interpretação de contexto realizada com a integração de ontologias e técnicas fuzzy mostra ser uma solução potencial para a monitoração de ambientes físicos sujeitos a situações emergenciais.

Les nanomatériaux possèdent des propriétés fascinantes, mais sont considérés comme potentiellement dangereux. Cette image négative limite les possibilités d’innovation dans la recherche ainsi que dans l’industrie. Afin d’utiliser au mieux le potentiel des nanomatériaux émergents et d’assurer la sureté tout au long de leur cycle de vie, l’approche « safer-by-design » peut être appliquée dès les premières étapes de la recherche. Il s’agit d’étudier simultanément leurs propriétés, leur fonctionnalité et leur toxicité. Avec les informations acquises à chaque étape, la performance et la sureté de ces matériaux pourraient être améliorées.Les oxysulfures bimétalliques de gadolinium et de cérium de compositions Gd2(1-x)Ce2xO2S sont des nanomatériaux émergents, prometteurs pour la photocatalyse et l’imagerie biomédicale. Des nanoplaquettes de dimension 2 × 20 nm ont été préparées par synthèse colloïdale en milieu organique. Une caractérisation approfondie des produits a été fournie. Ensuite, l’approche « safer-by-design » a été discutée en relation avec la conception des nanoplaquettes d’oxysulfure pour la photocatalyse (absorption de lumière, photodégradation de colorants, production de radical) et l’imagerie biomédicale (revêtement, photoluminescence, propriétés magnétiques). Leur toxicité a été étudiée par une combinaison de modèles in vitro ainsi que in vivo. Pour les deux applications, le taux de cérium et les propriétés de surface des nanoplaquettes semblaient être les paramètres clés qui influent à la fois sur leur fonctionnalité et leur toxicité. Globalement, ce travail présente la première tentative de développement de nanoparticules d’oxysulfure métallique par l’approche « safer-by-design »
Nanomaterials possess fascinating properties but are regarded as potentially harmful. This negative image limits the potential for innovation in both research and industry. To maximize the potential of emerging nanomaterials and ensure safety during their life cycle, “safer-by-design” may be employed in the early stage of nanomaterial research. It consists in investigating their properties, functionality and toxicity at the same time. With feedback between each step of the studies, the performance as well as the safety of the materials may be improved.Bimetallic gadolinium-cerium oxysulfides of compositions Gd2(1-x)Ce2xO2S are emerging nanomaterials that show potentials in photocatalysis and biomedical imaging. Nanoplatelets of dimension 2 × 20 nm were prepared by colloidal synthesis in organic solvent. In-depth characterization of the products was provided. Then, safer-by-design approach was discussed in relation with oxysulfide nanoplatelets design for photocatalysis (light absorption, photodegradation of dyes, radical production) and biomedical imaging (coating, photoluminescence, magnetic properties). Their potential toxicity was assessed using a combination of in vitro and in vivo models. For both applications, the cerium content and the surface properties of the nanoplatelets appeared to be key parameters that impact their functionality and toxicity. Overall, this work presents the first attempt to develop safer-by-design metal oxysulfide nanoparticles

La Tension dans un Service d’Urgences (SU) est un déséquilibre entre le flux de charge des soins et la capacité de prise en charge sur une durée suffisante pouvant entrainer des conséquences néfastes au bon fonctionnement. Elle se reflète par la surcharge des locaux, l’allongement des délais de traitement et d’attente. Ce qui provoque à la fois l’insatisfaction des patients et l’anxiété du personnel. Cette thèse s’inscrit dans le cadre du projet HOST financé par le programme ANR-TECSAN-2011 afin d’élaborer un Système d'Aide à la Gestion de la Tension (SAGeT) assurant trois objectifs:1. L’évaluation multicritère grâce à une panoplie d’indicateurs agrégés par la logique floue afin de résoudre la subjectivité du ressentie humain de la tension. Chaque scénario d’évaluation déclenche des règles de décision spécifiques ciblant ainsi des points de défaillance à surveiller.2. L’anticipation de la demande sur différents horizons temporels : l’application des méthodes SARIMA et SARIMAX est justifiée par la saisonnalité des chroniques de visites et l’influence de certains paramètres externes (épidémies, vacances, météo). De plus, la qualité de l’information venant de l’historique a été améliorée par une recomposition d’historique basée sur la vraisemblance journalière.3. L’amélioration de la gestion des flux et le pilotage de l’activité puisque l’utilisation de SAGeT comme un tableau de bord offre une vue macro sur l’ensemble de l’activité (lits occupés, patients en attente, durées de passages prévisionnelles et allongements excessifs). Les simulations traitent des vrais scénarios de tension observés entre 2011 et 2013 dans le SU Pédiatriques Jeanne de Flandre du CHRU-Lille
He strain in an Emergency Department (ED) is an imbalance between the total demand load of healthcare treatment and resources ability to support it during a convenient horizon, which may results negative consequences on the smooth running of the activity. It is reflected by overcrowding, longer treatment and waiting times which causes both patients dissatisfaction and anxiety of personnel. This thesis is part of the HOST project funded by the ANR-TECSAN-2011 program to develop a Management Support System of Strain (MSSS) ensuring three objectives:1. Multi-criteria evaluation through a variety of indicators aggregated by fuzzy logic to solve the subjectivity of the human feeling of strain. Each evaluation scenario involves specific decision rules targeting to supervise failure points.2. Demand forecasting through several time horizons: applying SARIMA and SARIMAX methods is justified by the time series seasonality of visits and the influence of some external parameters (epidemics, holidays, weather). In addition, the quality of the historical information has been improved by a history rebuilding based on the daily likelihood.3. Improving flow management and activity monitoring since the use of MSSS as a dashboard provides a macro view of the whole activity (beds occupied, waiting, estimated length of stay, excessive elongation).The simulations address real strain scenarios observed between 2011 and 2013 in the Pediatric ED Jeanne de Flandre of the Regional University Hospital of Lille (France)

Il lavoro è stato suddiviso in tre macro-aree. Una prima riguardante un'analisi teorica di come funzionano le intrusioni, di quali software vengono utilizzati per compierle, e di come proteggersi (usando i dispositivi che in termine generico si possono riconoscere come i firewall). Una seconda macro-area che analizza un'intrusione avvenuta dall'esterno verso dei server sensibili di una rete LAN. Questa analisi viene condotta sui file catturati dalle due interfacce di rete configurate in modalità promiscua su una sonda presente nella LAN. Le interfacce sono due per potersi interfacciare a due segmenti di LAN aventi due maschere di sotto-rete differenti. L'attacco viene analizzato mediante vari software. Si può infatti definire una terza parte del lavoro, la parte dove vengono analizzati i file catturati dalle due interfacce con i software che prima si occupano di analizzare i dati di contenuto completo, come Wireshark, poi dei software che si occupano di analizzare i dati di sessione che sono stati trattati con Argus, e infine i dati di tipo statistico che sono stati trattati con Ntop. Il penultimo capitolo, quello prima delle conclusioni, invece tratta l'installazione di Nagios, e la sua configurazione per il monitoraggio attraverso plugin dello spazio di disco rimanente su una macchina agent remota, e sui servizi MySql e DNS. Ovviamente Nagios può essere configurato per monitorare ogni tipo di servizio offerto sulla rete.

This study examines how leaders enable their organisations to adapt and succeed in complex environments. Through the joint lenses of complexity theory and the cognition and social neuroscience of leadership it focuses on how leadership directly influences the creation and ongoing function of an adaptive organisation. The study includes the comparison of four leaders through embedded case studies as an abductive approach to initial theory building, and the follow up of two of them as a comparative method of analysis, and it generates a substantive theory of leadership cognition called emergent logic. This leadership approach is especially relevant to leading complex human systems in emergent environments, the scenario for the majority of organisations in the present day. This thesis addresses two questions: How do leaders of adaptive organisations think? And what do leaders of adaptive organisations do? Among the major findings the study reveals that a critical success factor is the leader’s capacity to create and guide a complex human system by establishing and maintaining a shared mental model of its collective purpose, guided by deeply held and articulated values. The cognitive constructs of complexity and emergent logic have a direct and indirect effect on individuals and the organisation, and facilitate the creation of an adaptive operational culture and organisational mind, and the complementary enabling structures that allow for ongoing evolution through emergence, transformation and diffusion as required. Thus the organisation and its people can progressively build more complex emergent mental models and solutions in the face of increasingly common unpredictable situations, leading to the capability for organisational adaption and evolution over time. In contributing to the theory of creating and leading adaptive organisations, supported by empirical research, this study has improved our understanding of the effect of the leader’s cognitive capacity on organisational adaptability and the level of entanglement; revealed the links between the creation of adaptive organisational structures and their culture; examined the growth of individual and collective capability to manage the increasing complexity and emergence created by successful adaption and evolution; identified the common elements of various types of complex systems that are relevant to adaptive change; presented a model of emergent logic and described the empirical use of that model over time.
Thesis (Ph.D.) -- University of Adelaide, Business School, 2014

碩士
輔仁大學
資訊管理學系碩士班
105
Genetic Algorithm be called for short GA. GA is a search algorithm used to solve mathematical optimization problems. GA seems biological evolution algorithm, including crossover, mutation, evolve, natural selected. Each item composed to whole populations and it means chromosome in GA. In the process of evaluation, GA will select a part of chromosome to crossover and mutation. After evaluating for each chromosome, it will produce offspring. We can compute fitness value for each chromosome and we use natural selected method to maintain outstanding chromosome to next generation. In this paper, we use GA to solve physicians schedule problem. A completed class table means one chromosome in initiation. In the process of initiation, we use roulette method to select better chromosome to evolve. We choose three methods for crossover. They called One-Day-based Two-Point Crossover, Multi-Day-based Two-Point Crossover and Randomly selected day-based crossover. In the process of mutation, we use Site-Directed Mutation method. When we selected better chromosome to evolve, we add the elite method to maintain the percent of better chromosome to next generation. We also use adaptive algorithm to find the best variables value. The method is called fuzzy logical method. We use it to adjust the crossover rate and mutation rate in each iteration. GA will become more efficiency to find the better solution.

碩士
國立中興大學
植物病理學系所
107
Lisianthus (Eustoma rusellianum) is one of the major cut-flower crops for exportation in Taiwan. Plants with symptoms of stunting, cup-shaped leaf curl and enations on petals and dorsal veins of leaves were found and collected from Fang-Yuen (FY) and Bei-Gang (BG) areas in central Taiwan in 2015. Results of biological, molecular and phylogenetic analyses indicated that the causal agents are two begomoviruses of the family Geminiviridae. Some isolates, that are FY0 (LC089013), FY2 (LC089014), and BG2 (LC089766), shared 93.3% nucleotide sequence identity to that of papaya leaf curl Guangdong virus (PaLCuGdV) (KP876482) while some isolates, namely BG1 (LC091538) and BG9 (LC091539), were most similar to that of DNA-A of tomato leaf curl Thailand virus (TYLCTHV) (KT322144) with 87.2% similarity. Based on the International Committee on Taxonomy of Viruses (ICTV) demarcation criteria of 91% nucleotide sequence identity for Begomovirus species, the FY0 and related isolates should be lisianthus-infecting isolates of PaLCuGdV and the isolates BG1 and BG9 is considered as a novel species of Begomovirus and temporarily designated as lisianthus enation leaf curl virus (LisELCV). We used PaLCuGdV-FY0 and LisELCV-BG9 as models for further analyses. Both viruses contained typical genome organization of begomovirus DNA-A with 6 open reading frames (ORFs) but different in genome size with PaLCuGdV-FY0 2732 nucleotides (nts) and LisELCV-BG9 2759 nts. In silico analyses revealed that LisELCV may be a recombinant with origins derived from PaLCuGdV-W1 (KF446659) and DNA-A component of TYLCTHV-NT35 (GU723735). The LisELCV-BG9 consists of whole C1 and C4 genes, part of C2 (89%) and C3 (53%) genes of PaLCuGdV-W1 (KF446659) and whole V1 and V2 as well as part of C3 (47%) and 1 C2 (11%) genes of DNA-A component of TYLCTHV-NT35 (GU723735). Infectious clones of both viruses, i.e. pCAMBIA1304-FY0 and pCAMBIA1304-BG9, were generated by rolling circle amplification and were successfully introduced to lisianthus and Nicotiana benthamiana plants by agro-infiltration. The inoculated lisianthus plants showed symptoms similar to those of diseased samples originally collected in the fields and the inoculated N. benthamiana plants also displayed symptoms of leaf curl and enation indicating the pathogenicity of both viruses. However, the pCAMBIA1304-BG9 was less virulent than pCAMBIA1304-FY0 with milder symptoms and longer incubation period after agro-infiltration. Nevertheless, synergistic effects of shorter incubation period and severer symptoms associated with co-inoculation by less virulent LisELCV-BG9 and lisianthus-infecting PaLCuGdV-FY0 as well as ageratum yellow vein virus (AYVV) are observed. Specific primers for detecting lisianthus begomoviruses in multiplex polymerase chain reaction have been developed and can be used effectively in field surveys. The etiology of two emerging lisianthus viral diseases and the characteristics of their causal agents have been studied and the detecting tools and techniques for lisianthus-infecting begomoviruses have been developed in this study.

Abstracts in English, Afrikaans and Zulu
This study was conducted to address a distinct lack of knowledge regarding strategizing as a function of social interaction. Social researchers like Critchley contend that an organisation should essentially be regarded as an evolving product of people’s continuous interaction resulting in shared meaning. In subscribing to Critchley’s premise, and assuming that strategy inquiry is an empirically informed social science, the current study consequently set out to gain an understanding of how social interaction between practitioners shapes organisational strategizing and subsequent strategic outcomes. The strategy-as-practice perspective served as an integrative lens for the current research. This perspective that subscribes to the practice turn in social research, focuses on the actual practices (praxis) of strategy actors (practitioners) within unique organisational settings with unique strategizing tools, techniques and artefacts (practices). Informed by the philosophical underpinnings of a pragmatic worldview and a qualitatively driven mixed methods approach, a case study design allowed for in-depth analyses of multiple sources of empirical data to facilitate an understanding of the research phenomena. In addition to exploring social interaction during episodes of strategy practice, the current research investigated how practitioners’ motivations to interact shape and are shaped by ongoing interactions and meaning making. The current study also examined how external and internal organisational contexts, including organisational practices, influence and are influenced by ongoing social interactions. Two small private higher education institutions that reflect the typology of most private providers in the South African higher education landscape were selected for the case study. These private providers face numerous challenges in a tough current economic climate. Private providers further fulfil a pivotal role in the demand absorption of a growing need for higher education in South Africa. The main findings of the current research confirmed that strategizing at the two case study organisations is indeed mainly a function of social interaction. Strategizing is mostly shaped by people as emotional beings. Strategizing is the product of sometimes-irrational interactions and subsequent constantly evolving shared meanings and relationships between people. It is the social interaction between strategy actors during episodes of strategy praxis that serves as a social mechanism in transforming strategizing intent into strategy outcomes. Different strategy actors employ a wide array of techniques to get their ideas or views accepted during strategy-related interactions. Findings indicated that the selected strategies at the two case study organisations are mostly not based on objective reasoning linked to a clear plan or vision, but rather on strategy actors’ abilities in getting their ideas to be accepted by the group. Findings further suggested that the owners of the respective case study organisations strongly influence how things are done during episodes of strategy praxis. Strategizing at both companies is informal and comprises mostly of reacting to challenges and dealing with crises. Both organisations follow a differentiation strategy. Safety and security; employment prospects, as well as certain academic issues like small classes for better learning can be regarded as areas of competitive advantage for both. The proliferation of private providers, significant investment in private higher education, as well as private provision’s important demand absorption role suggest that there is a definite future for private higher education in South Africa. The intended main contribution of the current research is to facilitate an understanding of how social interaction as social mechanism shapes strategizing and resultant strategic outcomes. The understanding of the social world supposedly increases as the collection of the compatible causal mechanisms grows – where mechanisms reveal how the observed relationships between phenomena are created and are explained. The findings of the current research could thus serve as a building block in accumulating social science theory regarding this unexplored avenue of interaction-driven strategy research. To this end, a conceptual framework is proffered to guide similar future studies. The current study provided a glimpse into the strategy-workings of two small private higher education providers and ultimately contributes towards the growing body of knowledge regarding private provision within the South African higher education landscape
Hierdie studie is uitgevoer om die kennelike gebrek aan kennis oor strategie as ʼn funksie van sosiale interaksie aan te spreek. Sosiale navorsers soos Critchley beweer dat ʼn organisasie in wese beskou moet word as ʼn ontwikkelende produk van mense se deurlopende interaksie wat aanleiding gee tot gedeelde betekenis. In ooreenstemming met Critchley se veronderstelling dat strategiese ondersoek ʼn sosiale wetenskap is wat empiries ingelig is, was die uitgangspunt van die bepaalde studie gevolglik om te begryp hoe sosiale interaksie tussen praktisyns organisasiestrategie en gevolglike strategiese uitkomste bepaal. Die strategie-as-praktyk-perspektief het as ʼn integrerende lens vir die bepaalde navorsing gedien. Hierdie perspektief wat ooreenstem met die praktykomwenteling in sosiale navorsing, fokus op die werklike praktyke van strategierolspelers (-praktisyns) in unieke organisasie-omgewings met unieke strategie-instrumente, -tegnieke en -artefakte (praktyke). Ingelig deur die filosofiese ondersteuning van ʼn pragmatiese wêreldbeskouing en ʼn gemengde metodiek van kwalitatiewe benadering, het ʼn gevallestudieontwerp voorsiening gemaak vir indringende ontleding van verskeie bronne empiriese data om ʼn begrip van die navorsingsfenomene te fasiliteer. Bykomend tot die ondersoek van sosiale interaksie tydens episodes van strategiepraktyk, het die bepaalde navorsing ondersoek hoe praktisyns se motivering om in interaksie te wees deurlopende interaksie en betekenisgewing vorm en daardeur gevorm word. Die bepaalde studie het ook ondersoek hoe eksterne en interne organisasiekontekste, insluitend organisasiepraktyke, deurlopende sosiale interaksie beïnvloed en daardeur beïnvloed word. Twee klein privaathoëronderwysinstansies wat die tipologie van die meeste privaatverskaffers in die Suid-Afrikaanse hoëronderwysomgewing weerspieël, is vir die gevallestudie geselekteer. Hierdie privaatverskaffers het te make met verskeie uitdagings in die bepaalde moeilike ekonomiese klimaat. Privaatverskaffers vervul ʼn kernrol in die vraagabsorpsie van ʼn toenemende behoefte aan hoër onderwys in Suid-Afrika. Die hoofbevindings van die bepaalde navorsing het bevestig dat strategie by die twee organisasies in die gevallestudie wel hoofsaaklik ʼn funksie van sosiale interaksie is. Strategie word meestal gevorm deur mense as emosionele wesens. Strategie is die produk van interaksie wat soms irrasioneel is asook gevolglike gedeelde betekenis en verhoudings tussen mense wat konstant ontwikkel. Dit is die sosiale interaksie tussen strategierolspelers tydens periodes van strategiepraktyk wat dien as ʼn sosiale meganisme wat strategievoorneme in strategiese uitkomste transformeer. Verskillende strategierolspelers gebruik ʼn wye verskeidenheid tegnieke om hulle idees of beskouings tydens strategieverwante interaksie aanvaarbaar te maak. Die bevindings het aangedui dat die geselekteerde strategieë by die twee gevallestudie-instansies meestal nie op objektiewe beredenering wat inskakel by ʼn duidelike plan of visie gebaseer word nie, maar eerder op strategierolspelers se vermoë om hulle idees vir die groep aanvaarbaar te maak. Bevindings het verder bevestig dat die eienaars van die onderskeidelike gevallestudie-instansies ʼn groot invloed het hoe dinge tydens episodes van strategiepraktyk gedoen word. Strategie by albei maatskappye is informeel en bestaan meestal uit reaksie op uitdagings en hantering van krisisse. Albei organisasies volg ʼn differensiëringstrategie. Veiligheid en sekuriteit, werkverskaffingsvooruitsigte asook bepaalde akademiese aangeleenthede soos kleiner klasse vir beter leer, kan beskou word as gebiede van mededingingsvoordeel vir albei. Die proliferasie van privaatverskaffers, beduidende investering in hoër onderwys, asook die belangrike vraagabsorpsierol van privaatverskaffers dui daarop dat daar beslis ʼn toekoms vir privaathoëronderwys in Suid-Afrika is. Die beplande hoofbydrae van die bepaalde navorsing is om ʼn begrip te fasiliteer van hoe sosiale interaksie as sosiale meganisme strategie en gevolglike strategiese uitkomste vorm. Begrip van die sosiale wêreld neem waarskynlik toe soos die versameling van die versoenbare kousale meganismes groei – waar meganismes openbaar hoe die waargenome verhoudings tussen fenomene geskep en verduidelik word. Die bevindings van die bepaalde navorsing kan dus dien as ʼn boublok om sosialewetenskapsteorie te akkumuleer oor hierdie onverkende baan van interaksiegedrewe strategienavorsing. Om hierdie rede, word ʼn konseptuele raamwerk aangebied as riglyn vir soortgelyke toekomstige studies. Die bepaalde studie het ʼn blik gebied op die strategiese werking van twee klein privaathoëronderwysverskaffers en uiteindelik bygedra tot die toenemende kennisgeheel van privaatverskaffing in die Suid-Afrikaanse hoëronderwysomgewing.
Ucwaningo lwenzelwe ukubhekana nokusweleka kolwazi maqondana nokwenza isu njengomsebenzi wokusebenzisana kwabantu. Abacwaningi ngabantu, abanjengoCritchley, babeka ukuthi inhlangano kumele ithathwe njengento eguqukayo nenqubo yabantu yokusebenzisana kwabantu okunomphumela wokwabelwana ngencazelo Ngokulandela inqubo kaCritchley, kanye nokuthatha ngokuthi ukuphenyisisa isu yinto esekelwe ubufakazi obusekelwe yisayense ngabantu, ucwaningo lwamanje, ngakho-ke lufuna ukuthola ngokusebenzisana kwabantu phakathi kwemifanekiso yama-practitioner, ukwenza isu lenhlangano kanye nemiphumela ebalulekile elandelayo. Isu njengenqubo eyenziwayo nombono lisebenze njengesibuko esihlangane kucwaningo lwamanje. Umbono ohambisana nenqubo yokwenza kucwaningo ngabantu ugxila kwinqubo yokwenza yangempela (praxis) ngalabo abasebenza ngesu (practitioners) kwisimo esingavamile senhlangano enamathuluzi angavamile okwenza isu, amathekniki kanye nezinto ezenziwa ngezandla zama-artefact (practices). Ngokusekelwa kwisisekelo sefilosofi ngombono womhlaba wokwenza ngokubambekayo kanye nendlela exubene yokwenza ye-qualitative, idizayini yesifundo ngesibonelo, kuvumele ukuthi kwenziwe uhlaziyo olunzulu ngemithombo ehlukene yolwazi olutholakale ngobufakazi bophenyisiso, kusize ukuqondisisa ngento okwenziwa ngayo ucwaningo. Nangaphezu kwalokho, ukuphenya ngokusebenzisana kwabantu ngesikhathi sezikhawu zokwenzeka kwezinto, ucwaningo lwamanje luhenyisisa ngokuthi ngabe ama-practitioner agqugquzelwa yini ukwenza umumo wobunjalo kanye nokuthi lowo mumo nawu ube nomphumela kubo ngokuqhubekela phambili kanye nokuthi kube nencazelo. Ucwaningo lwamanje, lubuye luhlole nokuthi ngabe izimo zangaphakathi nezangaphandle kwenhlangano, ezibandakanya inqubo yokusebenza kwenhlangano, zinomthelela kanjani futhi nazo zibawumthelela kanjani kwezokuxhumana nokusebenzisana kwabantu. Izikhungo ezimbili ezincane zemfundo ephakeme ezibonisa ithayipholoji yabahlinzeki abaningi bangasese kwindawo yemfundo ephakeme eNIngizimu Afrika ziye zakhethwa. Laba bahlinzeki bangasese babhekene nezinselele ezihlukene kumkhakha onzima wamanje kwezomnotho. Abahlinzeki bangasese babuye badlale indima ebalulekile nokuthi badinga ukuthi banganyelwe kwisidingo esikhulayo semfundo ephakeme eNingizimu Afrika. Okuthokele kakhulu ngocwaningo lwamanje kuqinisa ukuthi ukwenza isu ngeziboniso ezimbili zocwaningo, kwinhlangano, kuyadingeka ikakhulukazi njengomsebenzi wokusebenzisana kwabantu. Ukwenza isu kuvamise ukusekelwa ngabantu njengabantu abanemizwa ngokomoya. Ukwenza isu kungumphumela wokuthi ngezinye izikhathi kuba nokusebenzisana okungenasizathu esibambekayo kanti imiphumela kuvamise ukuba ngeshintshayo nokwabelana ngesizathu sayo kanye nobuhlobo bayo phakathi kwabantu. Ukusebenzisa kwabantu phakathi kwalabo abenza isu ngezikhathi zenqubo yokwenza okusiza njengendlela yabantu ekuguquleni inhloso yesu ukuze libe yisu elinemiphumela. Abantu abenza amasu abehlukene basebenzisa amathekniki ehlukene ukwenza ukuthi imibono yabo kanye nezindlela ababona ngayo izinto kwemukeleke ngesikhathi sokuxhumana mayelana namasu. Imiphumela etholakele ikhombisa ukuthi amasu akhethiwe kwizifundo zezibonelo ezimbili zezinhlangano zisekelwe kwizizathu ezingatshekele ohlangothini oluthize, kodwa esihambisana nohlelo olucacile kanye nombono, kodwa kuncike kumakhono abenzi bamasu ekwenzeni ukuthi imibono yabo yemukeleke eqenjini. Okunye okuthokakele kubuye kwaphakamisa nokuthi abanikazi bezinhlangano okwenziwa ngazo iziboniso zesifundo banomthelela kakhulu ngokuthi izinto zenziwe kanjani ngezikhathi zenqubo ebambekayo yokwenza. Ukwenza amasu kuzo zimbili izinkampani kwenziwa ngendlela engahlelekile kakkhulu, kanti kuquka ekuncikeni ekuphenduleni kwizinselele kanye nokuphendula kwizimo ezisikazayo ezivelayo. Zombili izinhlangano zilandela amasu ehlukahlukene. Ukuphepha nokuvikeleka, amathuba emisebenzi kanye nezinto ezithile zesiakhademiki ezifana namaklasi amancane ukuze kufundeke kangcono nakho nngeminye yemikkhakha esiza kakhulu ekuphumeleleni. Ukubakhona ngobuningi kwabahlinzeki bangasese, ukutshalwa kakhulu kwezimali kwimfundo yangasese ephakeme, kanye nokuhlinzekwa kwmefundo yangasese kanye nesidingo sendima yokumuncwa ngokwenganyelwa, kuphakamisa ukuthi likhona ikusasa langampela lemfundo yangasese ephakeme eNingizimu Afrika. Inhloso eqondiwe ngokuthela esivivaneni kocwaningo lwamanje ukusiza ekutheni kube nokuqondisisa ngokuthi ukusebenzisana kwabantu njengendlela yokubumba amasu kanye nemiphumela kungasiza kanjani. Ukuqondisisa ngomkhakha wabantu kuyenyuka njengoba kukhula ukuqoqana kwezindlela zokwenza – lapho khona izindlela zokwenza ziveza ukuthi ngabe ubudlelwane obubhekiwe nobuqashelwayo bungabanjani uma kuqhathaniswa izinto ezenziwe futhi nokuthi zichazwa kanjani. Okutholakele ngocwaningo lwamanje kungasiza ngokuba yisakhelo ekuqokeleleni itiyori yesayense ngabantu maqondana nalo mkhakha ongakaphenyisiswa ngokwanele kwisu elixhumene ngokusebenzisana locwaningo. Maqondana nalokhu, uhlaka lombono luyahlinzekwa ukuba ngumkhombandlela kucwaningo lwangekusasa. Ucwaningo lwamanje luveze kancane ukusebenza kwesu kwizikhungo ezimbili ezincane zabahlinzeki ngemfundo ephakeme yangasese, kanti futhi luthela esivivaneni ekukhuleni kolwazi ngokuhlinzekwa kwemfundo yangasase emkhakheni wemfundo ephakeme eNingizimu Afrika.
Business Management
D. Com. (Business Management)

碩士
銘傳大學
財務金融學系碩士班
92
This paper analyzes the key determinants of successful market transfer from emerging stock to listed markets. The examined firms were all fully quoted on the Taiwan emerging stock market and the successful transfer took place between 2002 and 2003. They were modeling as logit with an unobserved effect allowing for characterizing some firm-specific heterogeneity, for instance, the quality of management team (Wooldridge, 2000). The key determinants will be mainly divided by environment and firm-specific heterogeneity characterized by “average industry-specific margin, nation-favored industry, macroeconomic prosperity” and “industry-type, age, size, initial return, profit-margin, earnings per share (EPS), R&D rate, internal ownership, institutional ownership”, respectively. The empirical evidence shows that it is more favorable for manufacturing-oriented and high-EPS firms to successfully transfer. The probability of successful transfer, meanwhile, will increase with average profit-margin of the same industry and the extent to the macroeconomic prosperity. It, however, casts doubt on the claim that the effects of nation-favored industry, age, size, initial return, individual profit-margin, R&D rate, internal ownership and institutional ownership on the probability. As well as the longer a firm stays in the emerging stock market, the less possible it succeeds transferring to OTC/TSEC. It pays to notice that the variance of the random unobserved effects is significantly different from zero. It claims that the more volatile for management team, the less possible a firm succeeds transferring to OTC/TSEC. Finally, the empirical evidence shows that the logit model is more good-of-fittness with unobserved effects than without them.

碩士
國立中興大學
科技管理研究所
107
In recent years, the concept of Industry 4.0 has emerged, and many manufacturing firms have begun to introduce emerging technologies such as the Internet of Things, big data, and artificial intelligence towards Industry 4.0. Manufacturing is the core competence for many Taiwanese firms, but small and medium-sized enterprises are facing difficulties in transition to Industry 4.0. Taiwanese government and manufacturing service providers are developing Industry 4.0 related technologies and services to help Taiwan''s manufacturing transformation to enhance their competitiveness. Therefore, how to understand the technological trend of industry 4.0 and develop appropriate technology strategies are becoming very important. This study analyzes relevant patents of Industry 4.0 to explore technological trends and potential technical opportunities of Industry 4.0. The patents are collected from the EPO, USPTO, WIPO databases, and the latent topics of the Industry 4.0 is identified through Latent Dirichlet Allocation (LDA). The generalized linear mixed model is used to determine the growth trend of those latent topics. Through competitive and market analysis, the relationship between leading firms and latent topics are depicted and the technology value of each topic are calculated, respectively. Then, the technology evolution map for closely related latent topics is developed based on the result of the Ward hierarchical cluster analysis. This study explores the latent technical topics of Industry 4.0, predicts their technology maturity, and depicts technology landscape of various leading firms to assist manufacturing firms understand technological trends of Industry 4.0. The research findings can be used for manufacturing firms or government to develop technology strategies towards Industry 4.0.