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Emami, Seyed Majid. "Communication through high delay spread X bandwidth (HDB) channels /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
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Guarnieri, Leandro de Castro. "Transporte eletrônico quântico em uma heteroestrutura de dupla barreira(HDB) assistido por fônons." Universidade Federal de Juiz de Fora (UFJF), 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/5344.
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Nesta tese, é feito um estudo teórico sobre as propriedades de transporte de elétrons e de emissão de um feixe coerente de fônons com frequências na faixa de terahetz, conhecido como saser, a partir de um dispositivo semicondutor de dimensões nano-métricas, formado por uma heteroestrutura de dupla barreira (HDB) e controlado por um potencial externo. O sistema é descrito por um hamiltoniano na aproximação de tight-binding no qual são incluídos as contribuições dos elétrons, dos fônons e das interações elétron-fônon e elétron-elétron. Para o estudo das propriedades de transporte eletrônico, utilizou-se do formalismo de Keldysh que considera, de forma direta, as interações de muitos corpos com a finalidade de reduzir uma corrente de elétrons fora do equilíbrio a uma que depende das funções Green retardadas que estão em equilíbrio termodinâmico a uma dada temperatura. Um procedimento conhecido como dizimação é empregado repetidamente ao longo deste trabalho para a obtenção das funções de Green retardadas. Para o estudo das propriedades de emissão dos fônons TA, são utilizadas as soluções das equações cinéticas que governam as populações dos elétrons nos dois primeiros níveis ressonantes e dos fônons dentro do poço. O perfil de energia potencial e a distribuição de cargas são calculados auto-consistentemente através de um sistema de equações no qual se inclui a equação de Poisson. Verificaram-se nos resultados as conhecidas regiões de instabilidade no início da emissão dos fônons LO e de biestabilidade no final do segundo pico da corrente. Uma análise sobre o comportamento destas regiões é feita através de mudanças nos parâmetros da HDB. A influência da temperatura sobre o saser também é estudada. A baixa temperatura, os resultados encontrados aqui coincidem com aqueles existentes na literatura.
In this thesis, we study theoretically the transport properties of electrons and emission of a coherent beam of TA phonons with terahetz frequencies, known as saser, from a semiconductor device of nanometric dimensions formed by a double barrier heterostructure and controlled by an external potential. The system is described by a Hamiltonian in the 'tight-binding' approximation in which the electrons, the phonons, the electron-phonon and the electron-electron interactions contributions are included. To study the electronic transport properties we use the Keldysh formalism, which directly considers the many body's interactions, to reduce the flow of electrons out of equilibrium to one that depends on the retarded Green functions that are in the thermodynamic equilibrium at a given temperature. A procedure known as decimation is used repeatedly throughout this work to find such retarded Green functions. To study the emission properties of the TA phonons, we solve the kinetic equations that govern the populations of electrons in the first two resonant levels and the phonons in the well. The potential profile and the charge distribution energy are calculated self-consistently, through a system of equations which includes the Poisson equation. We verify in our results the well known regions of instability at the beginning LO phonon emission and bistability at the end of the second peak current. We analyze the behavior of these regions through the change in the barriers thickness of the HDB. A study of the influence of temperature on saser is carried out in this work. At low temperatures, our results coincide with those in the literature.
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com, LKSHIS@gmail, and Kah Seng Loh. "The 1961 Kampong Bukit Ho Swee Fire and the Making of Modern Singapore." Murdoch University, 2008. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20090219.104739.
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By 1970, Singapores urban landscape was dominated by high-rise blocks of planned public housing built by the Peoples Action Party government, signifying the establishment of a high modernist nation-state. A decade earlier, the margins of the City had been dominated by kampongs, home to semi-autonomous communities of low-income Chinese families which freely built, and rebuilt, unauthorised wooden houses. This change was not merely one of housing but belied a more fundamental realignment of state-society relations in the 1960s. Relocated in Housing and Development Board flats, urban kampong families were progressively integrated into the social fabric of the emergent nation-state. This study examines the pivotal role of an event, the great Kampong Bukit Ho Swee fire of 1961, in bringing about this transformation. The redevelopment of the fire site in the aftermath of the calamity brought to completion the British colonial regimes emergency programmes of resettling urban kampong dwellers in planned accommodation, in particular, of building emergency public housing on the sites of major fires in the 1950s. The PAPs far greater political resolve, and the timing of and state of emergency occasioned by the scale of the 1961 disaster, enabled the government to rehouse the Bukit Ho Swee fire victims in emergency housing in record time. This in turn provided the HDB with a strategic platform for clearing other kampongs and for transforming their residents into model citizens of the nation-state. The 1961 fires symbolic usefulness extended into the 1980s and beyond, in sanctioning the PAPs new housing redevelopment schemes. The official account of the inferno has also become politically useful for the government of today for disciplining a new generation of Singaporeans against taking the nations progress for granted. Against these exalted claims of the fires role in the Singapore Story, this study also examines the degree of actual change and continuity in the social and economic lives of the people of Bukit Ho Swee after the inferno. In some crucial ways, the residents continued to occupy a marginal place in society while pondering, too, over the unresolved question of the cause of the fire. These continuities of everyday life reflect the ambivalence with which the citizenry regarded the high modernist state in contemporary Singapore.
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Gott, Travis Matthew. "Spectroscopic and Kinetic Studies of Hydrodenitrogenation and Hydrodesulfurization over Supported Nickel Phosphide (Ni2P)." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/29536.
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This dissertation describes preparation and characterization of Ni2P catalysts and their application in hydrodesulfurization (HDS) and hydrodenitrogenation (HDN). The work carried out includes synthesis of Ni2P on different siliceous supports, SiO2 and MCM-41. It also includes characterization of these catalytic materials using X-ray diffraction (XRD), temperature-programmed reduction (TPR), Fourier transform infrared (FTIR) spectroscopy and X-ray absorbance fine structure (XAFS) spectroscopy. In situ FTIR was employed to study the acidity of Ni2P/SiO2 and probe the catalytic sites involved in the HDN of pyridine. Transient and steady-state kinetics of a surface intermediate that is formed upon pyridine adsorption and reaction was studied to elucidate the mechanism of HDN over Ni2P/SiO2. Additionally, in situ FTIR and X-ray absorption near edge structure (XANES) spectroscopy was utilized to probe the bonding, mechanism and kinetics of thiophene HDS over a novel MCM-41-supported Ni2P catalyst. The use of these techniques allowed for better understanding of the surface intermediates, mechanisms and the nature of the active sites involved in HDN and HDS.Ph. D.
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Lee, Yong-Kul. "Reactivity and Structure of Supported Nickel Phosphides (Ni2P) in Deep Hydrodesulfurization Catalysis." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/30228.
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This dissertation describes preparation and characterization of Ni2P catalysts and their application in deep hydrodesulfurization (HDS) of a model sulfur compound, 4,6-dimethyldibenzothiophene (4,6-DMDBT), one of the most refractory S-compounds. This topic is of great importance in addressing recently enacted environmental regulations limiting the sulfur content in fuels. The work carried out includes synthesis of Ni2P on different siliceous supports, SiO2, MCM-41, and ultra-stable Y zeolite (USY). It also includes determining the characteristics of the supported Ni2P catalysts with a wide range of techniques: X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and X-ray absorption fine structure (XAFS) spectroscopy. The use of these techniques allowed better understanding of the nature of the active sites as well as the effect of supports. Activity tests were conducted in the HDS of 4,6-DMDBT and the HDN of quinoline. The performance of the catalysts will be compared to that of a conventional sulfide hydrotreating catalyst, Ni-Mo-S/Al2O3. Investigation of the reaction mechanism in the hydrodenitrogenation (HDN) of 2-methylpiperidine together with in situ FT-IR measurements were conducted to understand how catalyst properties affect activity and selectivity.Ph. D.
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Zelenková, Jana. "Přístupy k měření chudoby se zaměřením na členské státy EU." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-201951.
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This thesis focuses on current approaches to the measurement of poverty. The aim of the thesis is to evaluate if measuring poverty indicators and quality of life indicators used by United Nations Development Programme and Eurostat are meaningful enough. The theoretical part is an analysis of chosen indicators. The theoretical knowledge is followed by practical part, comparing poverty levels in member states of the European Union, and giving deeper insight into the analysis of sub-indicators. Furthermore, the thesis looks at informative value connected to mutual relations among the indicators. The comparison reveals that the level of human development is negatively related to aspects such as insufficient economic growth, inequality and low level of wealth redistribution. From an analytical point of view, new multi-criteria indicators are useful enough for the purpose of research on this topic, in spite of certain imperfections.
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Burgisser, Alain. "HDR." Habilitation à diriger des recherches, Université d'Orléans, 2009. http://tel.archives-ouvertes.fr/tel-00447580.
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La Volcanologie moderne utilise des approches expérimentales, de terrain et théoriques pour mieux comprendre des phénomènes volcaniques critiques. Ces différents angles sont nécessaires en raison de l'extrême variation des échelles impliquées : des bulles de gaz de moins d'un millimètre libérant le gaz générant des panaches explosifs de plusieurs kilomètres de haut. La physique multiphasée, qui a pour objet d'étude l'écoulement de mixtures réactives de fluide et de particules, a permis des avancées dans l'unification de ces échelles. En combinant des lois à petite échelle, comme la croissance d'une bulle, des propriétés nouvelles émergent des simulations numériques, comme la ségrégation des bulles dans un conduit volcanique. De telles propriétés émergentes sont souvent valides à de grandes échelles et peuvent parfois être testées dans les systèmes naturels. La physique multiphasée reste cependant très jeune: les expérimentalistes qui déterminent les lois constitutives des systèmes les plus simples, les modélisateurs qui assemblent ces lois dans des modèles numériques complexes aux propriétés émergentes et les volcanologues de terrain qui mesures ces propriétés n'ont pas toujours le langage commun permettant de confronter leurs découvertes. Mes travaux ont eu pour but de trouver ce langage commun afin de faciliter l'intégration de nos connaissances sur les volcans. Cette intégration, renforcée dans le futur, pourrait ouvrir la possibilité d'unification de ces sous domaines. Allons-nous vers une unification de la Volcanologie ?
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Kremer, Laurent. "HDR." Habilitation à diriger des recherches, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00259336.
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Lukáč, Ľuboš. "Udržitelnost sociální situace obyvateľstva v období hospodářské krize." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-72281.
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Abstract The role of the thesis is to analyze the financial situation of households and changes in living standards in Slovakia since 2000 through the creation of economic crisis to the present. In the thesis are described in detail information about unemployment, income and economically active population, but also the inflow of foreign investment, social security, household indebtedness of individuals and social situation in the Slovak Republic. These indicators compared with countries of European Union Member States. This topic is very interested because of its topicality. I chose Slovakia for two reasons. The first is that I am citizen of the Slovak Republic and the second is the availability of statistical data and work with them. Keywords: social situation, GDP, HDI, unemployment, poverty, FDI
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Fernlund, Fredrik, and Markus Koskinen. "HDR in production." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95329.
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HDR (High Dynamic Range) är en teknik som gör det möjligt att fånga in ett större dynamiskt omfång en vad en vanlig bild skulle klara av. Användningsområdena för sådana HDR-bilder är många men företag inom mspel- och film- och visualiseringsindustrin använder ofta bilderna för virtuell ljussättning, däribland Syndicate Entertainment. Det är ett filmproduktionsbolag beläget i Stockholm där examensarbetet delvis är utfört. Idén bakom examensarbetet är att den komplicerade och långsamma processen att skapa HDR-bilderna bör kunna effektiviseras. En utförd enkätundersökning ligger tillsammans med litteraturstudier och kontakt med handledare på företaget och skolan som grund för en framtagen arbetsgång. Arbetsgången är den kedja av processer som krävs för att skapa en HDR-bild och vidare en ljusmapp. Denna arbetsgång granskas kritiskt där förslag på förbättringar redovisas. Förutom granskningen har en demonstrationsapplikation utvecklats. Det finns två syften med denna applikation. Syftena är dels att tillgodose företagets önskemål om att erhålla en applikation som går att använda i praktiken, dels för att realisera och testa några av de framtagna effektiviseringsteorierna.
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Vančura, Jan. "Tone-mapping HDR obrazů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237159.
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This thesis concerns with the introduction to the problematics of images with high dynamic range (HDR) and possibilities of HDR images compression options for display on devices with a low dynamic range (LDR). In the introduction is described historical evolution of recording of reality. It is focusing towards point of view of physics, human visual perception and digital recording. There are described the ways of generating and holding of HDR images. The thesis is corncerned to the techniques of HDR compression, it means the tone-mapping. The different techniques of tone-mapping are explained and specific aproach is targeted to the gradient domain high dynamic range compresion.
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Čurda, Pavel. "Měřicí přístroj HDO signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400610.
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The thesis deals with the introduction of the measuring instrument SVA - M on the market for compliance with electromagnetic compatibility and electrical safety requirements. Furthermore it deals with determination of measuring accuracy instrument SVA - M and measurement uncertainties. For the determination of accuracy there is a theoretical analysis and subsequent practical measurements.
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Bonnard, Jennifer. "Génération d'images 3D HDR." Thesis, Reims, 2015. http://www.theses.fr/2015REIMS014/document.
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L’imagerie HDR et l’imagerie 3D sont deux domaines dont l’évolution simultanée mais indépendante n’a cessé de croître ces dernières années. D’une part, l’imagerie HDR (High Dynamic Range) permet d’étendre la gamme dynamique de couleur des images conventionnelles dites LDR (Low Dynamic Range). D’autre part, l’imagerie 3D propose une immersion dans le film projeté avec cette impression de faire partie de la scène tournée. Depuis peu, ces deux domaines sont conjugués pour proposer des images ou vidéos 3D HDR mais peu de solutions viables existent et aucune n’est accessible au grand public. Dans ce travail de thèse, nous proposons une méthode de génération d’images 3D HDR pour une visualisation sur écrans autostéréoscopiques en adaptant une caméra multi-points de vue à l’acquisition d’expositions multiples. Pour cela, des filtres à densité neutre sont fixés sur les objectifs de la caméra. Ensuite, un appareillement des pixels homologues permet l’agrégation des pixels représentant le même point dans la scène acquise. Finalement, l’attribution d’une valeur de radiance est calculée pour chaque pixel du jeud’images considéré par moyenne pondérée des valeurs LDR des pixels homologues. Une étape supplémentaire est nécessaire car certains pixels ont une radiance erronée. Nous proposons une méthode basée surla couleur des pixels voisins puis deux méthodes basées sur la correction de la disparité des pixels dontla radiance est erronée. La première est basée sur la disparité des pixels du voisinage et la seconde sur la disparité calculée indépendamment sur chaque composante couleur. Ce pipeline permet la générationd’une image HDR par point de vue. Un algorithme de tone-mapping est ensuite appliqué à chacune d’elles afin qu’elles puissent être composées avec les filtres correspondants à l’écran autostéréoscopique considéré pour permettre la visualisation de l’image 3D HDRHDR imaging and 3D imaging are two areas in which the simultaneous but separate development has been growing in recent years. On the one hand, HDR (High Dynamic Range) imaging allows to extend the dynamic range of traditionnal images called LDR (Low Dynamic Range). On the other hand, 3Dimaging offers immersion in the shown film with the feeling to be part of the acquired scene. Recently, these two areas have been combined to provide 3D HDR images or videos but few viable solutions existand none of them is available to the public. In this thesis, we propose a method to generate 3D HDR images for autostereoscopic displays by adapting a multi-viewpoints camera to several exposures acquisition.To do that, neutral density filters are fixed on the objectives of the camera. Then, pixel matchingis applied to aggregate pixels that represent the same point in the acquired scene. Finally, radiance is calculated for each pixel of the set of images by using a weighted average of LDR values. An additiona lstep is necessary because some pixels have wrong radiance. We proposed a method based on the color of adjacent pixels and two methods based on the correction of the disparity of those pixels. The first method is based on the disparity of pixels of the neighborhood and the second method on the disparity independently calculated on each color channel. This pipeline allows the generation of 3D HDR image son each viewpoint. A tone-mapping algorithm is then applied on each of these images. Their composition with filters corresponding to the autostereoscopic screen used allows the visualization of the generated 3DHDR image
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Guingouain, Martin. "Hydrodésazotation et hydrodésulfuration de molécules modèles, sur des carbures de molybdène supportés sur alumine modifée." Paris 6, 2005. http://www.theses.fr/2005PA066208.
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Chen, Dawei. "The role of HBD-2 and HBD-3 in human T cell development." Thesis, University of East London, 2016. http://roar.uel.ac.uk/5121/.
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Human β-defensins (hBDs) are a family of cationic peptides able to directly kill a wide range of microorganisms including bacteria, fungi and viruses. In addition to their antimicrobial activities, defensins also contribute to the modulation of both the host innate and adaptive immunity. In this project, we demonstrate that the αCD3/28 co-stimulation of human CD4+ T cells in the presence of 10μg/ml hBD-2 or hBD-3 together causes an up-regulation in numbers of CD4+CD69+CD25+ and CD4+CD69-CD25+ T cell subsets, indicating that the treatment of hBD-2 and 3 enhances CD4+ T cell activation. Consistent with this finding, proliferation assay using CFSE suggests that hBD-2 and hBD-3 treatment in vitro induces the proliferation of CD4+ T cells following by 96hrs culture. Analysis of expression of the regulatory T cells (Tregs) specific marker, FoxP3, reveals a shift in the CD4+CD127-CD25+ Treg subset at 18hrs. However, at the later time point, we found that the percentage of FoxP3+cells decreased in the CD4+CD127-CD25+ Treg population, whereas the presence of the FoxP3+CTLA-4+ Treg subset increased. These data indicate that Treg suppressive function may be potentially defective following the co-incubation of purified T cells with either hBD-2 or hBD-3 for 42hrs in vitro due to the apparent loss of FoxP3 expression. We further characterise the role of hBD-2 and hBD-3 in driving human CD4+ T cells polarisation. Our in vitro data suggests that treatment with hBD-2 and hBD-3 can not only induces effector T cell (Teff) differentiation into RORγt+T-bet+ (Th17/Th1) cells, but can also trigger the differentiation of Treg expressing RORγt and T-bet rather than the master controller of Treg function, FoxP3. This apparent plasticity of T cell phenotype allows them to convert from Treg to Th1/17-like effector T cell phenotype following 18hrs in culture. By 42hrs in culture, treatment with hBD-2 and hBD-3 induced both Teff cell and Treg cell differentiation towards the Th17-like phenotype. Compared with the treatment with hBD-2, treatment with hBD-3 induced a more pronounced effect to increase levels of RORγt in CD4+ T cells. This elevated expression may, in turn, be responsible for the induction of higher IL-17A secretion. Consistent with this idea, it was found that treatment with hBD-3 but not hBD-2 was capable of inducing the higher level of secretion of IL-17A. Additionally, treatment with hBD-3 induced an increased expression of IL-6, which is capable of driving the differentiation of naïve T cells towards IL-17-producing Th17 cells. Functionally, using the Treg suppression assay, the data suggested that hBD-2 may dampen down Treg cell ability to induce suppression of Teff cell activity. Interestingly, co-culture with hBD-2 would also appear to increase Teff cell resistance to Treg immunoregulation in vitro. Further investigation using microarray gene analysis revealed chemokine C-C motif ligand 1 (CCL1) as potential genes responding to hBD-2 treatment. The blockade of CCL1 has been reported to inhibit Treg suppressive function. Thus, this study explored the function of these antimicrobial candidates in regulating CD4+ T cell plasticity which could result in hBD-2 and hBD-3 being able to regulate its own production, but also may regulate Treg and Teff cell development and function, thus strengthening the link between innate and adaptive immunity.
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Holm, Åsa. "Mathematical Optimization of HDR Brachytherapy." Doctoral thesis, Linköpings universitet, Optimeringslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-99795.
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One out of eight deaths throughout the world is due to cancer. Developing new treatments and improving existing treatments is hence of major importance. In this thesis we have studied how mathematical optimization can be used to improve an existing treatment method: high-dose-rate (HDR) brachytherapy. HDR brachytherapy is a radiation modality used to treat tumours of for example the cervix, prostate, breasts, and skin. In HDR brachytherapy catheters are implanted into or close to the tumour volume. A radioactive source is moved through the catheters, and by adjusting where the catheters are placed, called catheter positioning, and how the source is moved through the catheters, called the dwelling time pattern, the dose distribution can be controlled. By constructing an individualized catheter positioning and dwelling time pattern, called dose plan, based on each patient's anatomy, it is possible to improve the treatment result. Mathematical optimization has during the last decade been used to aid in creating individualized dose plans. The dominating optimization model for this purpose is a linear penalty model. This model only considers the dwelling time pattern within already implanted catheters, and minimizes a weighted deviation from dose intervals prescribed by a physician. In this thesis we show that the distribution of the basic variables in the linear penalty model implies that only dwelling time patterns that have certain characteristics can be optimal. These characteristics cause troublesome inhomogeneities in the plans, and although various measures for mitigating these are already available, it is of fundamental interest to understand their cause. We have also shown that the relationship between the objective function of the linear penalty model and the measures commonly used for evaluating the quality of the dose distribution is weak. This implies that even if the model is solved to optimality there is no guarantee that the generated plan is optimal with respect to clinically relevant objectives, or even near-optimal. We have therefore constructed a new model for optimizing the dwelling time pattern. This model approximates the quality measures by the concept conditional value-at-risk, and we show that the relationship between our new model and the quality measures is strong. Furthermore, the new model generates dwelling time patterns that yield high-quality dose distributions. Combining optimization of the dwelling time pattern with optimization of the catheter positioning yields a problem for which it is rarely possible to find a proven optimal solution within a reasonable time frame. We have therefore developed a variable neighbourhood search heuristic that outperforms a state-of-the-art optimization software (CPLEX). We have also developed a tailored branch-and-bound algorithm that is better at improving the dual bound than a general branch-and-bound algorithm. This is a step towards the development of a method that can find proven optimal solutions to the combined problem within a reasonable time frame.
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Bergmeier, Christoph. "Paraoxonaseprofil im Dichtebereich der HDL /." Berlin : WVB, Wissenschaftlicher Verlag Berlin, 2005. http://www.wvberlin.de/data/inhalt/bergmeier.htm.
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Rico, Romo Juan Humberto. "HDL-level partitioning of circuits." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58798.pdf.
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Zitnanska, Lucia, and Michaela Stessl. "Jüngste Änderungen im slowakischen HGB." WU Vienna University of Economics and Business, 1998. http://epub.wu.ac.at/3369/1/ap056.pdf.
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Ferretti, Davide. "Immagini HDR: Principi e applicazioni." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
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Questa tesi presenta il mondo delle immagini HDR, soffermandosi sulla descrizione dei principi su cui si basa la loro formazione via hardware e sulla loro generazione tramite software, fino ad arrivare a descrivere alcuni formati di file che permettono il salvataggio ed una serie di applicazioni che ne richiedono l’utilizzo in situazioni pratiche
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Musil, Martin. "HDR obrazy a jejich zpracování." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236195.
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HDR images have much wider range of luminance values, than photographs created and displayed in a standard 24-bit format. There are several ways to create images with high dynamic range, but this diploma thesis focuses just on one of them, and it is the method of composing out of series of standard photographs. The goal of the first part of the text consists of studying, understanding and eventually writing down the basic terms and knowledge in the subject of image composition and other processes, necessary to create HDR photographs. Next the procedure of creating images with high dynamic range, processing and converting them into viewable form, is described. The following chapter contains the design of the application, which creates this kind of photographs, and which is smoothly changing into its actual implementation afterwards. The process of experimenting and its results are presented and discussed firstly in their own chapter and secondly in the attachment. The conclusion contains the summary of the work and the options of possible expansion.
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Nejezchleb, Ivan. "Tone-mapping pro HDR obrazy." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236674.
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This thesis focuses on the high dynamic range (HDR) imaging problematic. It describes process of capturing and storage of HDR images in brief. Main part of thesis deals with techniques of how to display HDR images on common visual display devices, which are not able to represent them directly. This process is called tone-mapping. It is firstly described in general and than the text focuses on several techniques of tone-mapping, mainly on tone-mapping using bilateral filtering.
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Wang, Ke. "Investigation of total HDL and HDL subclass kinetics using stable isotope techniques in healthy subjects." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/807836/.
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Background: HDLs are heterogeneous particles, and apoA-I is the major apolipoprotein in human HDL. CVD is a multifactorial condition, and a various lipids and lipoproteins in the plasma are involved in the development of CVD. It has been suggested that HDLs have an inverse association with the risk of CVD. A high sugar intake (especially fructose and sucrose) was found to associate with a low HDL-C level and increased risk of CVD. However, the effect of dietary sugar on HDL kinetics is unclear. An insight of HDL subclass kinetics may provide a better understanding of the whole dynamic of HDL metabolism. Methods: Two studies were undertaken: 1) A controlled, randomized crossover dietary intervention study was carried out in 6 overweight middle-aged men. Subjects underwent two 12-week dietary interventions with high and low non-milk extrinsic sugar diets. Total HDL kinetics was measured using a primed constant intravenous infusion of [1-13C] leucine for 10 hours. 2) A HDL subclass kinetic study was carried out in 6 healthy subjects (3 males and 3 females). An intravenous bolus injection of [1-13C] leucine was applied to measure HDL subclass kinetics. Blood samples were taken during a 10-hour study and the following 2 weeks. Total HDL, HDL2 and HDL3 were separated from the plasma by ultracentrifugation, and αHDL and preβHDL were isolated by agarose gel electrophoresis. ApoA-I in HDL fractions was separated by SDS-PAGE. After purification, hydrolysis and derivatization, the isotopic enrichment of apoA-I in HDL was measured by GC-MS and apoA-I fractional catabolic rate (FCR) and production rate (PR) was calculated for each subclass and total HDL. Results: In the dietary intervention study, the FCR of total HDL apoA-I on the high and low sugar diet (0.20 ± 0.02 and 0.18 ± 0.02 pools/day) was similar, as was the PR (7.33 ± 0.66 and 6.05 ± 0.72 mg/kg/day respectively). In the HDL subclass study, the concentration of αHDL apoA-I (0.97 ± 0.05 g/L) was significantly higher than that of preβHDL apoA-I (0.15 ± 0.03 g/L) (p<0.001). The FCR of αHDL and preβHDL apoA-I was 0.10 ± 0.02 and 0.13 ± 0.04 pools/day, and the PR of αHDL and preβHDL apoA-I was 3.94 ± 0.73 and 0.67 ± 0.12 mg/kg/day respectively. The concentration of HDL3 apoA-I (0.68 ± 0.04 g/L) was significantly higher than that of HDL2 apoA-I (0.23 ± 0.06 g/L) (p=0.002). The FCR of HDL2 and HDL3 apoA-I was 0.15 ± 0.02 pools/day for both, and PR of HDL2 and HDL3 apoA-I was 1.35 ± 0.35 2 and 3.81 ± 0.51 mg/kg/day respectively. A significant difference was observed between αHDL and preβHDL apoA-I PR (p=0.010), and between HDL2 and HDL3 apoA-I PR (p=0.030) in the whole group. The concentration of HDL2 apoA-I was higher in women (0.32 ± 0.08 g/L) than men (0.13 ± 0.02 g/L) though the difference was not significant. HDL2 apoA-I PR was significantly higher in women than men (p=0.017). Conclusion: The high and low sugar diet did not affect HDL metabolism in overweight men. The higher apoA-I concentration of αHDL and HDL3 might be due to the higher apoA-I PR of αHDL and HDL3 compared to preβHDL and HDL2 respectively in healthy subjects. The higher level of HDL2 apoA-I in female than male subjects might be due to the higher PR of HDL2 apoA-I in women.
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Labza, Sönke [Verfasser]. "Der Einfluss von HDL und dem HDL-assoziierten Sphingosin-1-Phosphat auf proinflammatorische Signalwege / Sönke Labza." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2010. http://d-nb.info/1025087933/34.
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Steubesand, Nadine [Verfasser]. "Untersuchungen zur hBD-2- und hBD-3-Expression und -Regulation während einer Candida-Ösophagitis / Nadine Steubesand." Kiel : Universitätsbibliothek Kiel, 2009. http://d-nb.info/1019811323/34.
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Höbbel, Gunnar. "Untersuchungen zur bifunktionellen Rolle von HDL." [S.l.] : [s.n.], 1999. http://www.sub.uni-hamburg.de/disse/93/Diss1999.pdf.
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Lord, Mikael. "Adaptable rule checking tools for HDL." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16762.
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Today’s electronics in aviation (avionics) are more complex than ever before. With higher requirements on safety and reliability and with new SoC (System on Chip) technology, the validation and verification of designs meet new challenges. In commercial and military aircraft there are many safety-critical systems that need to be reliable. The consequences of a failure of a safety-critical system onboard a civil or military aircraft are immeasurably more serious than a glitch or a bit-flip in a consumer appliance or Internet service delivery. If possible hazards are found early in the design process, a lot of work can be saved later on. Certain structures in the code are prone to produce glitchy logic and timing problems and should be avoided. This thesis will strengthen Saab Avitronics knowledge of adaptable rule checking tools for HDL, with a market analysis of the tools available. Moreover will it evaluate two of the most suitable tools and finally it will describe some of the design issues that exist when coding safety-critical systems. Finally it is concluded that the introduction of static rule checking tools will help the validator to find dangerous constructs in the code. However, it will not be possible to fully automate rule checking for safety-critical systems, because of the high requirements on reliability.
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Kolkman-Deurloo, Inger Karine Kirsten. "Intraoperative HDR brachytherapy: present and future." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/8621.
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Pace, Gordon G. "Hardware design based on Verilog HDL." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298555.
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Ruiter, Corine de. "Ik heb niets beters te doen." Maastricht : Maastricht : Universiteit Maastricht ; University Library, Maastricht University [Host], 2007. http://arno.unimaas.nl/show.cgi?fid=13132.
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Leonce, Andrew. "HDR video enhancement, processing and coding." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19639.
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Advances in digital camera technology have led to the development of image sensors that are capable of capturing High Dynamic Range (HDR) images. Although this has enabled the capture of greater depths of colour and illumination, there remain problems with regards to transmitting and displaying the HDR image data. Current consumer level displays are designed to only show images with a depth of 8-bits per pixel per channel. Typical HDR images can be 10-bits per pixel per channel and upwards, leading to the first problem, how to display HDR images on Standard Dynamic Range (SDR) displays. This is linked to a further problem, that of transmitting the HDR data to the SDR devices, due to the fact that most state-of-the-art image and video coding standards deal with only SDR data. Further, as with most technologies of this kind, current HDR displays are extremely expensive. Furthermore, media broadcast organisations have invested significant sums of money into their current architecture and are unwilling to completely change their systems at further cost.
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Vacek, Tomáš. "Vývoj HDP, strukturální analýza, postavení zemědělství." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-257153.
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This master thesis deals with the gross domestic product as one of the basic macroeconomic indicators. The subject of the work is also examining the situation of Czech agriculture.
The work presents theoretical basis for understanding the basic relations and concepts that relate to the gross domestic product. They describe the various methods of GDP calculation and underlying economic factors, which contribute to the final value of GDP. In detail, the work deals with the development of Czech gross domestic product since 1993, and its comparison with not only with neighboring states, but also with other European Union countries.
The last part deals with the position of Czech agriculture and its development since 2003. In addition, he also position of individual plant and animal production, number of employees and contribution to gross domestic product.
In the final part, the work tries to summarize the trend of the gross domestic product of the Czech Republic and agriculture as its integral part.
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Martinů, Lukáš. "Skládání HDR obrazu pro pohyblivou scénu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234925.
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Master's thesis is focused on capturing of low dynamic range images using common devices such as camera and its multiple exposure. The main part of thesis is dedicated to composing these images to HDR image, inclusive sequence of images of static scenes, but also dynamic ones. Next part describes tone mapping used for display HDR image on LDR monitors. Moreover, there is given design and implementation of application solving problems mentioned earlier. In the end, the implemented application is evaluated and the possible continuation of this work is stated.
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Müllerová, Věra. "Kompenzace obrazových artefaktů v HDR obrazu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264942.
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Tato diplomová práce se zabývá syntézou HDR obrazu (High Dynamic Range Imaging). HDRI technologie se stala v posledních letech velice populární. Běžný a nejvíce používaný způsob vytvoření HDR obrazu je spojení více snímků stejné scény pořízených pomocí různých expozičních časů. Tato technika funguje správně pouze v případě, že se jedná o statickou scénu. Pokud je však ve scéně nějaký pohyb ve chvíli, kdy se pořizují snímky dané scény, výsledný HDR obraz obsahuje artefakty zvané jako duchy. V této práci jsou prezentovány základní informace o HDRI se zaměřením na metody odstraňující artefakty z HDR obrazů. Práce shrnuje již existující metody a dvě z nich - tzv. bitmap movement detection a histogram based ghost detection - představuje jako vhodné pro použití v real-time skládání HDR obrazu a pro implementaci na FPGA (Field-Programmable Gate Array) architektuře. Tyto metody jsou v práci implementovány v programovacím jazyce C++ jako prototypy. Navíc je zde navržena modifikace metody založené na výpočtu histogramu pro jednodušší a efektivnější implementaci na FPGA architektuře.
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Svatý, Lukáš. "HDR video "plugin" pro Adobe Premier." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264960.
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Cílem práce je vytvoření podpory pro editovaní videa v HDR formátu. Pro editaci videa je zvolen program Adobe Premiere Pro a na dosažení požadovaného výsledku je vytvořen plugin do zmiňovaného softwaru, který poskytuje požadovanou funkcionalitu. V práci jsou vysvětleny principy vytváření, zobrazení a ukládáni obsahu z rozšíreným dynamickým rozsahem. Zároveň jsou vysvětleny principy vytváření pluginů pro Adobe Premiere Pro za pomoci SDK verze CS6. V praktické části této práce jsou vysvětleny detaily implementace, problémy, které byly řešené, a popis samotného pluginu. Návrh pluginů je vytvořen tak, aby byla možná další práce na tomto softwaru, přidaní další funkcionality a pro umožnění využití tohoto díla na rozvoji obsahu s rozšíreným dynamickým rozsahem.
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Staněk, Jiří. "Metody temporálního tone-mappingu HDR videa." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403155.
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The diploma thesis provides the theoretical background needed to understand the complex topic of high dynamic range, and deals with the implementation of an innovative method for temporal video tone-mapping. At first, high dynamic range image acquisition, storage and processing are described. Afterwards, a general introduction to tone-mapping, description of undesirable image artifacts and an overview of existing state-of-the-art algorithms are presented. The part which follows focuses on the implementation of the chosen method and proposes several additional enhancements of the initially selected algorithm. Based on the information provided, an application with an intuitive graphical interface, which can be used for temporal HDR video tone-mapping, has been created. Finally, the the achieved results are demonstrated and visually compared with existing methods for temporal video tone-mapping.
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Wang, Xiaojing. "Cost- benefit Models for HDV Platooning." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200533.
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Klimentová, Veronika. "Nezaměstnanost a HDP - analýza vzájemných vztahů." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193368.
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The present thesis describes the relation of the gross domestic product and the unemployment rate by educational attainment. The analysis of relation between time series refers to data for the Czech Republic. The thesis is divided into four main chapters. The first chapter deals with the definition of the gross domestic product, the calculation method, the detection and the measurement. The following chapter is focused on the issue of unemployment. Both the chapters are supplemented by historical development of indicators in the Czech Republic. The last theoretical part presents the statistical methods used in the time series analysis. The fourth chapter provides the actual analysis of relations between the gross domestic product and the unemployment rate by educational attainment. The analysis is based on data for the period 1996--2014, which are quarterly seasonally unadjusted data.
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Becker, Cristiane Miotto. "Estudo das propriedades mecânicas e antichamas de nanocompósitos HDL/epóxi e compósitos HDL/epóxi/fibra de vidro." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/56590.
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Os hidróxidos duplos lamelares (HDLs) são materiais que podem ser utilizados para modificar ou incorporar características a polímeros termoplásticos ou termorrígidos. O presente trabalho tem como objetivo a síntese e caracterização de HDLs de Mg-Al intercalados com os íons glicinato, alaninato e dodecil sulfato e a sua utilização na formulação de nanocompósitos bicomponente HDL/epóxi, com diferentes teores de HDL, produzidos por casting e de compósitos tricomponente HDL/epóxi/fibra de vidro moldados por RTM. Os HDLs foram sintetizados pelo método da coprecipitação e incorporados a epóxi com o auxílio de solventes e de ultrassom. Para tal, foram avaliados os solventes acetona, clorofórmio e DMF, sendo o DMF selecionado como o melhor agente de dispersão. Os compósitos e nanocompósitos obtidos foram caracterizados quanto à dispersão dos HDL na matriz, às suas propriedades de resistência à chama (teste horizontal e vertical), à estabilidade térmica, às propriedades mecânicas e dinâmico-mecânicas. A incorporação dos HDLs provocou um incremento na estabilidade térmica dos compósitos e todas as amostras com esta carga apresentaram comportamento autoextinguível no teste de queima vertical, além de apresentarem uma grande diminuição na taxa de queima em comparação ao epóxi puro. A utilização dos HDL não possibilitou melhora nas propriedades mecânicas e dinâmico-mecânicas dos compósitos, que só foi obtida com a utilização do reforço de fibra de vidro.Layered double hydroxides (LDHs) can be used to modify or incorporate characteristics into a variety of thermoplastic or thermoset polymers. The present work aims to synthesize and characterize Mg:Al LDHs intercalated with glycinate, alaninate and dodecyl sulfate and to use them in the formulation of bi-component LDH/epoxy nanocomposites, with distinct LDH content, obtained by casting, and tricomponent LDH/epoxy/glass fiber composites molded by RTM. The LDH was synthesized, using the coprecipitation method, and incorporated into epoxy with the aid of solvents and ultrasonication. For that, acetone, chloroform and DMF solvents were evaluated, and DMF yielded the best performance as dispersing agent. The obtained composites and nanocomposites were evaluated regarding the quality of the LDH dispersion in the matrix, their flame resistance characteristics (horizontal and vertical testing), thermal stability, mechanical and dynamic-mechanical properties. The incorporation of LDH caused an increase in thermal stability of the composites and all samples containing LDH showed self-extinguishing behavior in the vertical burning test, and a large decrease in the burning rate was found compared to neat epoxy. The use of LDH did not significantly alter the mechanical and dynamic-mechanical properties of the composites, which was only achieved by using a glass fiber reinforcement.
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Catalano, Giovanna. "Role of HDL particles in the reverse cholesterol transport pathway : a clinical need to evaluate HDL functionality." Paris 6, 2008. http://www.theses.fr/2008PA066420.
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Les taux de cholestérol-HDL (C-HDL) représentent un facteur de risque indépendant de maladie cardiovasculaire et des taux élèves de C-HDL sont corrélés à une diminution du risque cardiovasculaire. Dans le contexte du transport inverse du cholestérol, la sortie du cholestérol des cellules et la délivrance des esters de cholestérol au niveau hépatique représentent les étapes majeures impliquant les particules HDL. Au cours des dyslipidémies athérogènes les concentrations plasmatiques de C-HDL ainsi que la distribution du cholestérol au sein des sous populations de HDL sont altérés. La protéine clé impliquée dans le remodelage des HDL et le transport inverse du cholestérol est la protéine de transfert des esters de cholestérol (CETP). Ainsi l’inhibition de l’activité de la CETP pourrait corriger le profile lipidique anormal des dyslipidémies athérogènes associées à un phénotype C-HDL bas. Nous avons démontré que chez les sujets normolipidémiques les taux plasmatiques de C-HDL ne reflètent pas l’efficacité de l’étape initiale de la voie du transport inverse du cholestérol et que cette étape est sujette à des contraintes spécifiques liées au genre. De plus, nous avons démontré que chez de patients présentant une dyslipidémie de Type IIB associée à un phénotype C-HDL bas, l’inhibition de la CETP module différemment les fonctions biologiques des sous fractions HDL et restaure ainsi les étapes altérées de la voie du transport inverse du cholestérol.
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Quilfen, Cyril. "Supercritical fluids synthesis, characterization and test of HDS catalysts : Assessment of criticality of metals contained in HDS catalysts." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0405/document.
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Dans un contexte environnemental où les législations concernant la teneur ensoufre présent dans les coupes pétrolières sont de plus en plus drastiques, le développementde nouveaux catalyseurs toujours plus actifs est donc nécessaire. Cette augmentation del´activité catalytique est possible à plusieurs niveaux dont, par exemple, par l´utilisation denouveaux procédés de synthèse tel que l´emploi de la voie fluides supercritiques. Dans unpremier temps, l´objectif est d´étudier les éléments utilisés pour préparer ces catalyseurs afind´avoir une vision plus large des réserves, des utilisations, des possibilités de substitutions…La criticité de ces éléments a donc été évaluée par le biais de plusieurs indicateurs. Dans unsecond temps, la compréhension de la synthèse de catalyseurs d´hydrodésulfuration (HDS) aété étudiée. Pour cela des expériences utilisant différents solvants et précurseurs métalliquesont été suivies via des analyses in situ Raman. Après avoir défini les résultats les plusprobants, le procédé de préparation de catalyseurs HDS assisté par le CO2 supercritique(scCO2) a été optimisé à travers une étude paramétrique. Pour cela, la température, lapression, le solvant d´imprégnation, le ratio entre CO2 et solvant d´imprégnation, le temps deréaction et le chargement en métaux ont été variés. Les matériaux obtenus ont ensuite étéfinement caractérisés (microscopie, DRX, Raman, ICP, microsonde) avant d´être activés parsulfuration et testés dans différentes réactions catalytiques (hydrogénation du toluène,hydrodésulfuration du dibenzothiophène et du 4,6-diméthyldibenzothiophène)In an environmental context where legislations concerning the sulfur content in oilare increasingly drastic, the research for new and ever more active catalysts is necessary. Thisincrease of the catalytic activity is possible at several levels, for example, with the use of novelsynthetic processes such as the use of the supercritical fluids route. In a first stage, theobjective is to study the elements used to prepare these catalysts in order to have a broaderview of the reserves, the uses, the possibility of substitutions ... The criticality of these elementshas therefore been evaluated by means of several indicators. In a second stage, theunderstanding of the synthesis of hydrodesulfurization catalysts (HDS) was studied. For thispurpose, experiments using different solvents and metallic precursors were followed by in situRaman analyses. After defining the most convincing results, the process for preparing HDScatalysts assisted by supercritical CO2 medium (scCO2) was optimized through a parametricstudy. For this, temperature, pressure, impregnation solvent, ratio of CO2 to impregnationsolvent, reaction time and metal loading were varied. The materials obtained were thencharacterized (microscopy, DRX, Raman, ICP, microprobe) before being activated bysulfidation and tested in various catalytic reactions (hydrogenation of toluene,hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene)
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Larsson, Kristian, and Michael Larsson. "HDR och Tone mapping i automatiserade tullsystem." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Data- och elektroteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-21715.
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This report is about how HDR (HighDynamicRange) can be created and used in combination with Tone mapping. This work has been carried out together with Kapsch TrafficCom AB in Jönköping. The objective of this project is to: Evaluate and investigate the effects given to pictures by HDR and tone mapping. Evaluate if the technology may lead to improvements in Kapsch’s systems. To construct a program which is able to handle some form of tone mapping or HDR-algorithm. These questions will be answered in this report: What kind of effects has HDR and tone mapping-algorithms on pictures? Can the HDR-technology give better data in Kapsch’s systems? The research method used in this report is called action research. This means the authors has investigated the technology by reading different documentations and by testing different algorithms to see what kind of result they give. The report describes some of the tests made to see if the technology is appropriate in Kapsch’s system.There is two smaller reports made by the authors which documenting some of the work.The first report describes the work with different settings for a camera to create pictures with HDR-quality. The second report describes the differences between tone mapping-algorithms and different file format. Both reports are included as appendices to this report.In the program created by the authors some larger library’s with standard functions for opening of JPEG-pictures was used. The chosen library’s was MFC and GDI+. The program is developed for a windows environment and handles functions like sharpening with unsharp mask, colour space conversion and tone mapping.
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Shivane, Chetan. "Environment-friendly anti-corrosion 'Superprimers' for HDG." Cincinnati, Ohio : University of Cincinnati, 2006. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1140205616.
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Thesis (M.S.)--University of Cincinnati, 2006.Title from electronic thesis title page (viewed Apr. 20, 2006). Includes abstract. Keywords: Superprimer,Corrosion, Coatings, Silanes, primers, HDG Includes bibliographical references.
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Leung, Yin-Ling. "Surface studies of planar model HDN catalysts." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34576.pdf.
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Hasselwander, Oliver. "Antioxidant capacity of HDL and cardiovascular disease." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266711.
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Hantzer, Sylvain. "Nouveaux matériaux pour la réaction d'hydrodésulfuration (HDS)." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614274n.
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Daub, Sebastian. "Rückstellungen nach HGB, US GAAP und IAS /." Baden-Baden : Nomos, 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009061275&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Fick, Daniel. "Latente Steuern nach HGB und IAS/IFRS." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12103714.
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Andrade, Maria Ester Lemos de. "Regularização fundiária de favelas : o caso HBB." reponame:Repositório Institucional da UnB, 2008. http://repositorio.unb.br/handle/10482/6352.
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Dissertação (mestrado)-Universidade de Brasília, Faculdade de Arquitetura e Urbanismo, Programa de Pós-Graduação em Arquitetura e Urbanismo, 2008.Submitted by Jaqueline Ferreira de Souza (jaquefs.braz@gmail.com) on 2009-10-19T18:24:36Z No. of bitstreams: 1 2008_ MariaEsterLAndrade.pdf: 2294724 bytes, checksum: d2a78d6a372c22b293899ccb613f0c7d (MD5)
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O Programa Habitar Brasil-BID, do Ministério das Cidades, tem o objetivo de qualificar os assentamentos urbanos precários e irregulares, de baixa renda, através de ações integradas de urbanização e regularização fundiária. A Regularização Fundiária é entendida como um processo que visa à inclusão sócio-espacial da chamada cidade informal, no contexto da cidade formal e utiliza-se dos instrumentos jurídicos previstos na legislação brasileira e de intervenções urbanísticas, que qualificam o objeto da posse ou da propriedade, ou seja, o lote ou a unidade habitacional. A pesquisa e os estudos de casos no âmbito do Programa Habitar Brasil BID, dentro de um contexto de maior intimidade com o processo de regularização fundiária, permitiram o conhecimento dos entraves que impedem a sua conclusão, possibilitando um debate importante para os gestores comprometidos com a questão da habitação de interesse social. São muitos os desafios a serem percorridos exigindo não só comprometimento, mas também maiores investimentos para garantir a qualidade e a salubridade destes assentamentos urbanos. O Programa Habitar Brasil – BID possibilitou um relacionamento entre os diversos níveis de governo nas diversas regiões metropolitanas do país e uma troca de experiências, que incentivou o desenvolvimento das instituições, preparando para o enfrentamento de maiores desafios. ______________________________________________________________________________ ABSTRACT
The Program Habitar Brazil-BID, of the Ministry of the Cities, has the objective to characterize the precarious and irregular nesting urban, of low income, through integrated actions of urbanization and land regularization. The land Regularization is understood as a process that aims at to the partner-space inclusion of the call informal city, in the context of the formal city it is used of the foreseen legal instruments in the Brazilian legislation and of urban interventions that characterize the object of the ownership or the property, that is, the lot or the of habitation unit. The research and the studies of cases of the Program Habitar Brazil BID inside of a context of bigger proximity with the process of land regularization allowed the knowledge of the impediments that hinder its conclusion making possible, therefore one has debated important for the managers compromised to the question of the habitation of social interest. The challenges to be are many covered demanding not only commitment, but also bigger investments to guarantee the quality and the salubrity of these urban nesting. The Program To inhabit Brazil - BID had gone possible a relationship enters the diverse levels of government in the diverse regions metropolitans of the country and an exchange of experiences, that stimulated the development of the institutions, preparing for the confrontation of bigger challenges.
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Silva, Raissa Maria Cotta Ferreira da. "Cinetica e modelagem no reator de HDT." [s.n.], 1995. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266335.
Full textAbstract:
Orientador: Rubens Maciel FilhoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
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Resumo: O hidrotratamento (HDT) de frações do petróleo é feito para remover Compostos de enxofre,nitrogênio,oxigênio e metais pesados,bem como para estabilizar as correntes por hidrogenação de compostos insaturados. Este processo tomou-se extremamente importante para atender a crescente demanda de combustíveis com baixo teor de impurezas, que vem sendo criada pelo desejo da sociedade em melhorar a qualidade do meio ambiente e obter produtos satisfatórios. Em destilados médios como o diesel, a maior parte do enxofre está presente na forma de compostos heterocíclicos condensados tais como benzotiofeno, dibenzotiofeno e benzonaftotiofeno. Quando o corte toma-se mais pesado o percentual de compostos heterocíclicos sulfurados aumenta mais rapidamente do que os compostos mais simples como mercaptans e heterocíclicos de um anel, por exemplo o tiofeno, que são organosulfurados mais fáceis de dessulfurizar. Da mesma forma, a fração de destilados médios. contém nitrogênio na forma de compostos heterocíclicos condensados, que exigem condições de temperatura e pressão mais severas para a remoção do heteroátomo ... Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: The reason for the hydrotreating of petroleum fractions is to remove sulfur, nitrogen, oxygen and heavy metal, in order to stabilize the fractions by hydrogenation of unsaturated compounds. This process has become extremely important to attend the growing demand of low impurity fuel oils that has been created by society's desire to improve the environment quality and to achieve satisfactory products. In the middle distillates, like diesel, most of the sulfur is present in the form of condensed heterocyclic compounds such as benzothiophenes, dibenzothiophenes and benzonaphthothiophenes.As the feedstocks become heavier, the percentage of condensed sulfur heterocyclics increases faster than simpler compounds such as mercaptans and single-ring heterocyclic, which are relatively easy to desulfurize. In the same way, the fraction of middle distillates has nitrogen in the form of condensed heterocyclics, that requires more severe pressure and temperature conditions to remove that heteroatom ... Note: The complete abstract is available with the full electronic digital thesis or dissertations
Mestrado
Desenvolvimento de Processos Químicos
Mestre em Engenharia Química