Submitted by Andrea Hayashi (deachan@gmail.com) on 2016-06-23T14:48:09Z No. of bitstreams: 1 dissertacao-joao-gilberto-turbiani-da-silva.pdf: 1109241 bytes, checksum: fe0dd11b583355512937bd3795a40224 (MD5) / Approved for entry into archive by Andrea Hayashi (deachan@gmail.com) on 2016-06-23T14:49:30Z (GMT) No. of bitstreams: 1 dissertacao-joao-gilberto-turbiani-da-silva.pdf: 1109241 bytes, checksum: fe0dd11b583355512937bd3795a40224 (MD5) / Made available in DSpace on 2016-06-23T14:49:30Z (GMT). No. of bitstreams: 1 dissertacao-joao-gilberto-turbiani-da-silva.pdf: 1109241 bytes, checksum: fe0dd11b583355512937bd3795a40224 (MD5) Previous issue date: 2014-04 / O presente estudo tem por temática apresentar uma análise da Teoria do romance, de György Lukács, concentrando-se em um dos conceitos centrais dessa obra que é o de “homem cindido”, por meio do qual o autor realiza o diagnóstico do homem moderno: alienado diante de suas próprias criações e moralmente cindido. Lukács faz essa análise simultaneamente à análise literária do romance, ou seja, o autor realiza crítica literária, investiga as possibilidades estéticas da produção do romance e, ao mesmo tempo, esboça uma ética, uma teoria da história e elementos para um sistema filosófico. O tratamento teórico e crítico da produção romanesca é, na verdade, um meio que permite ao autor abordar questões mais existenciais do ser humano. Ao tratar das formas literárias, sobretudo do romance, Lukács aponta para as formas da vida, verificando de que maneira a “vida autêntica” se afastou da vida moldada pelas estruturas sociais. / This study is an introduction to the Theory of the Novel's review, by György Lukács, focusing on two central concepts of this work, which are "splitted man", wherewith the author has made a diagnose about the modern man: alienated by their own creations and morally split. Lukács makes his opinion with simultaneous literary analysis of romance, in other words, the author performs a critical investigation into the aesthetic possibilities of romance's production and, at the same time, outlines an ethical theory of the history and elements for a philosophical system. The theoretical and critic treatment of the romanesque production is, in truth, one medium that allows the author to approach more existential questions of the human being. When treating literary forms, specially romance, Lukács indicates the forms of the life, verifying how the "authentic life" is departed from the life shaped by social structures.

abstract: Wh-questions have been widely discussed in different languages such as English, Mandarin Chinese, Italian, and Russian, but little attention has been paid to the structure of wh-questions in Modern Standard Arabic (MSA). Thus, this dissertation attempts to analyze the structure of wh-questions using the current frameworks: Minimalism and Cartography. In the late 1990s, Chomsky established the Minimalist Program which aims to describe the clause structure in as simple and economic mechanism as possible, and he advanced his famous research program to include phase theory, which aims to restrict the syntactic operations. On the other side, Rizzi (1997, 2001) proposed the Cartographic approach. In this approach, Rizzi attempted to analyze the left periphery domain in detail, and suggested the split CP hypothesis. Following those two approaches, Ginsburg (2009) and Totsuka (2015) unified them into one approach and suggested that ForceP, TopicP, and IntP are phasal domain while FocusP, FinP, and WhP are not. An overview of the Chomskyan model and Rizzi’s approach has been provided in Chapter 2. Also, this dissertation discussed the unified approach by Ginsburg (2009) and Totsuka (2015). In addition to the overview of the general frameworks, this dissertation discussed the clause structure such as the word order, left periphery domain (i.e., CP), and resumption in MSA. Furthermore, Chapter 2 presented the earlier studies on the wh-questions in MSA and highlighted the major gap which this dissertation attempts to fill. In these studies the structure of wh-questions in MSA were mis-analyzed because the surface structure of the nine wh-questions might look the same, but, in fact, they are not. Therefore, this dissertation attempts to (re)study the structure of wh-questions with taking into consideration the resumption and [definiteness]. In Chapter 3, the methodology and corpus analysis, which is used in collecting the wh-questions in MSA, are discussed. Finally, Chapter 4 analyzed the corpus findings based on the unified approach by Ginsburg (2009) and Totsuka (2015) and showed some evidence that man ‘who’ and ayy ‘which’ questions in MSA are in phasal phrase (i.e., IntP) while the rest of wh-questions are not. / Dissertation/Thesis / Doctoral Dissertation English 2017

No description available.

Orientador: Alice Maria Bastos Hubinger Tokarnia / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-16T03:05:57Z (GMT). No. of bitstreams: 1 Tachibana_Marina_M.pdf: 2745315 bytes, checksum: 91aeb0d6708948d94d06a63e21b98ad6 (MD5) Previous issue date: 2010 / Resumo: Um sistema embarcado executa um único programa ou um conjunto pré-definido de programas repetidamente e, muitas vezes, seus componentes podem ser customizados para satisfazer uma especificação com requisitos referentes à área, desempenho e consumo de energia. Caches on-chip, em particular, são alvos de muitos algoritmos de customização por terem uma contribuição importante no desempenho e no consumo de energia de processadores embarcados. Várias aplicações embarcadas processam estruturas de dados cujos padrões de acesso distintos tornam difícil encontrar uma configuração para o cache que garanta desempenho e baixo consumo. Propomos, neste trabalho, uma metodologia para projetar caches de matrizes particionados que satisfaçam uma restrição de tamanho total e em cujas partições estão mapeadas as matrizes da aplicação. Estas partições exploram a diferença de localidade espacial entre as matrizes. Com base na simulação de rastros de acesso à memória para entradas típicas, definimos uma métrica que quantifica o uso que as matrizes fazem das metades das linhas de um cache de matrizes unificado, associativo por conjunto, que satisfaz uma restrição de tamanho. Esta métrica é usada para dividir as matrizes em dois grupos, que são mapeados em duas partições de cache, uma com mesmo tamanho de linha, e outra com metade do tamanho de linha do cache de matrizes unificado. Este procedimento é repetido para várias organizações de cache de matrizes unificados com um tamanho especificado. No final, os caches de matrizes particionados baseados em rastros de acesso à memória com menor tempo médio de acesso à memória são selecionados. Para um decodificador MPEG-2, dependendo do paralelismo dos acessos de dados, os resultados das simulações mostram que o tempo médio de acesso à memória de um cache de matrizes particionado baseado em rastros de 8K bytes apresenta uma redução de 26% a 60%, quando comparado com o cache de matrizes unificado, associativo por conjunto, de mesmo tamanho, com menor tempo médio de acesso à memória. Existe também uma redução de 46% no consumo de energia entre estes caches / Abstract: An embedded system executes a single application or a pre-defined set of applications repeatedly and, frequently, its components can be fine-tuned to satisfy a specification with requirements related to area, performance, and energy consumption. On-chip caches, in particular, are the target of several customization algorithms due to its important contribution to the performance and energy consumption of embedded processors. Several embedded applications process data structures whose access patterns turn it difficult to find a cache configuration that guarantees performance and low energy consumption. In this work, we propose a methodology for designing a split array cache that satisfies a total size constraint and in whose partitions the arrays of an application are mapped. Those partitions explore the difference in spatial locality among the matrices. Using traces of memory accesses, obtained for typical input patterns, we define a metric that quantifies the use of the two halves of the lines by array accesses in a unified array set-associative cache that satisfies a size constraint. We use this metric to split the arrays in two groups that are mapped to two cache partitions, one with the same line size, and the other with half line size of that of the unified array cache. This procedure is repeated for several unified array cache organizations of a specified size. In the end, the trace based split array caches with lowest average memory access time are selected. For a MPEG-2 decoder, depending on the parallelism of array accesses, simulation results show that the average memory access time of an 8K byte split array cache is reduced from 26% to 60% as compared to that of the unified set associative array cache of same size with the lowest average memory access time. There is also a reduction of 46% in the consumption of energy / Mestrado / Engenharia de Computação / Mestre em Engenharia Elétrica

Masters of Science / Nampak packages millions of cans a year and a very small percentage of these cans fail due to many reasons. One of the main reasons that cause 2- piece food cans to fail is split flanges. Split Flanges arises due to a number of reasons which will be discussed in detail.The focus of this thesis was based on the causes of split flanges in 2-piece food cans. A study on manufacturing the steel and can making together with packaging fish in these cans was conducted. Another study on the reasons for split flanges occurring in 2 piece cans was conducted done as well.The purpose of the investigation was to check if hydrogen embrittlement could be the cause for split bodies forming in 2 piece food cans. 2 piece cans are drawn and wall ironed from tinplate; the cans were made up of a top and a shaped body. It was this shaped body that went through a considerable amount of stress during manufacture especially at the top of the can, which gave an explanation to why the cans split at the curved area near the flange of the can.According to previous studies done at Nampak R&D more complaints about split bodies were coming from the Fish canneries on the West Coast than the Vegetable canneries. These canneries used the exact same cans to package their product. The difference between the processes at these canneries was the exhaust boxes at the fish canneries. The exhaust box is a long tunnel filled with steam used to precook the fish; the vegetables are not precooked in exhaust boxes. Non metallic inclusions (NMI) was one of the main reason for these split flanges to occur and a reason of particular interest in this research.NMI’s were distributed throughout the steel of the cans and since the same cans were used for the fish and vegetable canneries, they should be failing at the same rate. Yet only complaints came from the fish canneries. So the primary focus of the research was to check if the additional steam process contributed to the formation of split bodies / flanges. We proposed to investigate if hydrogen atoms collect at grain boundaries, vacancies and non metallic inclusions and also to check if the steam accelerated embrittlement. Hydrogen is believed to penetrate right into the bare steel of the cans that were exposed to steam.Hydrogen atoms are being investigated because of their small size, their ability to diffuse through a metal lattice and form hydrogen molecules within the intermetallic vacancies of the metal. The molecules of hydrogen, once formed within the internal structure of the metal, remain trapped because of their larger size and can generate a significant pressure that can contribute to the formation of split bodies. [1] The first step to prove whether H-embrittlement was present in the cans was to check if hydrogen was present. A spectroscopic method namely, elastic recoil detection analysis (ERDA) was used to check if H could be detected using the Elastic Recoil Detection Analysis technique. Several experiments were designed to make sure the technique was suitable for the detection of H. Even though it is known that all metals are susceptible to corrosion and Hembrittlement, the tinplate metals had to be checked in an environment similar to the exhaust box (suspected area causing hydrogen embrittlement) in the factories.Further characterization was done using X-Ray Diffraction to measure the residual stress and relate it to the effects of H-embrittlement. If the H had penetrated into the metal it would cause some distortion in the atomic distances between the atomic planes in Fe atoms and can be measured using XRD.Another effect of hydrogen embrittlement is to reduce the strength in the metal. Tensile tests were performed to measure the strengths of the metal.

Magister Chirurgiae Dentium - MChD / Aim: The aim of the study was to investigate whether a correlation exists between the intra- operative position of the Inferior Alveolar Nerve (IAN) and the nerve position as noted on a pre-operative Cone Beam Computer Tomography (CBCT) scan in patients requiring Bilateral Sagittal Split Osteotomy (BSSO) of the mandible. Introduction: The BSSO of the mandible is of fundamental importance in the correction of dental facial deformities. The main post-operative complication of a BSSO of the mandible is Neurosensory Impairment (NSI). To avoid possible NSI it is important to have as much pre- operative information as possible. In this regard, pre-operative CBCT scans can provide the surgeon with an important assessment of the mandibular canal. This information on the buccolingual, superior and inferior position of the canal, especially in the region of the planned osteotomy, could help the surgical team to avoid IAN injury. Materials and Methods: This study correlates the pre-operative position of the IAN as indicated on a CBCT scan with the intra-operative IAN position in patients requiring BSSO of the mandible. Ten standardised cases were included in a prospective case series where twenty mandibular sides were assessed. Results: The variables assessed in this study were location of the nerve, age, sex, type of movement and side of mandible operated on. It was found that only the distance between the Inferior Alveolar Canal (IAC) and the lower border of the mandible are predictive of whether the IAN will be attached to - or free from - the proximal segment of the mandible. Conclusion: From the study it can be concluded that a CBCT scan is a useful and reliable modality in the pre-operative evaluation of patients undergoing BSSO especially with regard to the assessment and mapping of the mandibular canal.

Terahertz (THz) devices are designed to operate from 0.1-10 THz. The THz spectra have unique properties such as penetration through soft materials and reflecting from hard materials, which make THz technologies, a prime candidate for imaging. Plasmons are longitudinal charge oscillations in carrier rich materials. Plasmons can be generated over the channel of transistors inducing a voltage between the source-drain when conditions are satisfied. In this thesis, plasmonic devices operating in the THz region have been studied both theoretically and experimentally investigating GaN/AlGaN and Graphene based transistors. First, we report on a detailed study of dispersion properties of uniform grating gate THz plasmonic crystals, asymmetric dual grating gate plasmonic crystals and with symmetry-breaking defect-like cavities in order to understand the physics behind THz plasmons. For the first time, we defined the dispersion of plasmons in terms of effective plasmonic index. By adding an additional grating on top of the grating gate with a different periodicity, doubles the amount of absorption. Plasmons can be excited when polarization is perpendicular to the gate. We then showed focusing and exciting of THz plasmons polarization independent using circular grating lenses. Sub-micron THz ring resonators are presented showing THz guiding in plasmonic waveguides. So far, resonant sensing has been observed only at cryogenic temperatures since electron mobility is high enough at low temperatures to sustain resonant plasmonic excitation at the channel of the detector. Recently, graphene attracted the attention of the researchers because of its high mobility at room temperature. Room temperature detection has been attempted and achieved, however the detectors have very small responsivity with non-resonant behavior since the graphene is sandwiched and fabrication of such detectors in large scale is impossible with the methods used. Here, we present a resonant room temperature detection of THz with upside down free standing graphene FETs having more than a 400 quality factor, a record high number in the field which is up to 50 times higher than GaN detectors and hundreds of responsivity values with a maximum around 400 V/W which is record high for graphene (10,000 times higher than previously reported graphene detector).

京都大学 / 0048 / 新制・課程博士 / 博士(エネルギー科学) / 甲第22552号 / エネ博第403号 / 新制||エネ||77(附属図書館) / 京都大学大学院エネルギー科学研究科エネルギー変換科学専攻 / (主査)教授 石山 拓二, 教授 川那辺 洋, 教授 今谷 勝次 / 学位規則第4条第1項該当 / Doctor of Energy Science / Kyoto University / DGAM

Motivation Sequence-based methods for phylogenetic reconstruction from (nucleic acid) sequence data are notoriously plagued by two effects: homoplasies and alignment errors. Large evolutionary distances imply a large number of homoplastic sites. As most protein-coding genes show dramatic variations in substitution rates that are not uncorrelated across the sequence, this often leads to a patchwork pattern of (i) phylogenetically informative and (ii) effectively randomized regions. In highly variable regions, furthermore, alignment errors accumulate resulting in sometimes misleading signals in phylogenetic reconstruction. Results We present here a method that, based on assessing the distribution of character states along a cyclic ordering of the taxa, allows the identification of phylogenetically uninformative homoplastic sites in a multiple sequence alignment. Removal of these sites appears to improve the performance of phylogenetic reconstruction algorithms as measured by various indices of 'tree quality'. In particular, we obtain more stable trees due to the exclusion of phylogenetically incompatible sites that most likely represent strongly randomized characters. Software The computer program noisy implements this approach. It can be employed to improving phylogenetic reconstruction capability with quite a considerable success rate whenever (1) the average bootstrap support obtained from the original alignment is low, and (2) there are sufficiently many taxa in the data set – at least, say, 12 to 15 taxa. The software can be obtained under the GNU Public License from http://www.bioinf.uni-leipzig.de/Software/noisy/.

Tabulated material properties are the starting block for the design of most structures. Mechanical structures undergo a wide range of loading conditions. Structures can be loaded statically or dynamically with a wide range of strain rates. With impact loading or high strain rates the relationships between stress and strain are not the same as in static loading. It has been observed that material properties are dependent upon the rate at which they are tested. Many investigators have studied the effect of high compressive strain rate loading conditions, in metals. The most common method for determining the dynamic response of materials is the Split Hopkinson bar. The main focus of this work was to design a Split Hopkinson Bar apparatus to determine the dynamic compressive behavior of fiber reinforced composite materials. Graphite epoxy laminated composites have compressive failure strengths of 100 MPa. Dynamic compressive testing shows that the failure stress has increased to 260 MPa, an increase of approximately 230%. This testing shows that material properties are a function of the rate at which they are loaded.