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1
Antas, Vilém. „Yield Curve Constructions“. Master's thesis, Vysoká škola ekonomická v Praze, 2016. http://www.nusl.cz/ntk/nusl-264627.
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The goal of this thesis is to analyze the mathematical apparatus of the most widespread methods used for the yield curves construction. It aims to introduce not only the various of construction models but also to describe the whole process of creation, while discussing the advantages and disadvantage of individual methods. The first chapter focus on the general theory and the use of the term structure of interest rates in practice. The second part deals with the construction process itself and describes the most frequently used methods. The last chapter then shows the real application of selected methods on given data set and the use of the constructed yield curves for interest rate derivative valuation too.
2
Špiřík, Jan. „Modul pro generování "atomů" pro přeparametrizovanou reprezentaci signálu“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218234.
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The aim of this master thesis is generating new "atoms'' for purposes of overcomplete signal representation for toolbox Frames in MATLAB. At first is described the principle of overcomplete systems and so-called frames. In the thesis is introduced the basic distribution of frames and conditions of their constructions. There is described the basic principle of finding the sparse solutions in overcomplete systems too. The main part is dealt with construction single functions for generating "atoms'', such as: Gabor function, B-splines, Bézier curves, Daubechies wavelets, etc. At last there is introduced an example of usage these functions for reconstruction signal in comparison with Fourier and wavelet transforms.
3
Ochulo, Ikechi. „Optimalizace tvaru mazací mezery hydrodynamického ložiska“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-451223.
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The objective of this Master's thesis is to find, using genetic algorithm (GA), an optimal profile for lubricating gap of a thrust bearing of a turbocharger. Compared to the analytical profile, the optimal profile is expected to have minimized friction for an equivalent load capacity. Friction minimization is one way to increase the efficiency of the thrust bearing; it reduces the friction losses in the bearing. An initial problem was given: a thrust bearing with Load capacity 1000 N, inner and outer radii of 30mm and 60mm respectively, rotor speed of 45000 rpm and angle of running surface of $0.5^0$. Lubricant properties were also provided for the initial problem: oil density of $ 840 kg/m^3$, dynamic viscosity $(\eta)$ of 0.01 Pa.s With this data, the numerical solution of the Reynolds equation was computed using MATLAB. To obtain more information, the minimum lubricating gap thickness was also computed using MATLAB. With this information, the shape of the analytical profile, and its characteristics were found. The analytical profile was then used a guide to create a general profile. The general profile thus obtained is then optimized using GA. The characteristics of the generated profile is then computed and compared to that of the analytical profile.
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Klimeš, Ondřej. „Komprimované vzorkování pro efektivní sledování objektu senzorovou sítí“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400432.
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The master's thesis deals with target tracking. For this a decentralized sensor network using distributed particle filter with likelihood consensus is used. This consensus is based on a sparse representation of local likelihood function in a suitable chosen dictionary. In this thesis two dictionaries are compared: the widely used Fourier dictionary and our proposed B-splines. At the same time, thanks to the sparsity of distributed data, it is possible to implement compressed sensing method. The results are compared in terms of tracking error and communication costs. The thesis also contains scripts and functions in MATLAB.
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Sayed, Hassan Adelyar. „The Complexity of Splay Trees and Skip Lists“. Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6858_1263424080.
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Our main results are that splay trees are faster for sorted insertion, where AVL trees are faster for random insertion. For searching, skip lists are faster than single class top-down splay trees, but two-class and multi-class top-down splay trees can behave better than skip lists.
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Nesky, Amy Lynn. „Stability of Splay States in Coupled Oscillator Networks“. Thesis, Boston College, 2013. http://hdl.handle.net/2345/3022.
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Thesis advisor: Renato MirolloThere are countless occurrences of oscillating systems in nature. Climate cycles and planetary orbits are a few that humans experience daily. Man has also incorporated, to his benefit, oscillation into his craft; the grandfather clock, for example, can keep track of time with astounding accuracy using the period of a long pendulum. Such systems can range in complexity in a number of ways. The governing equation for a given oscillator could be as simple as a sine curve, or its motion could appear so erratic that oscillatory motion is undetectable to viewers. The number of oscillators in a system can also vary, and oscillators can be coupled; that is, oscillators can be affected by the motion of neighboring oscillators. It is this last case we wish to study. We will briefly look at the case of finitely many oscillators and then move to analyzing a model consisting of infinitely many identical oscillators. Synchrony is the simplest collective behavior. We will study a more complicated pattern called splay states in which oscillators are equally staggered in phase, i.e. phase locked such that the system will return to this pattern if it is disturbed by an arbitrarily small amount. Mathematically, this requires us to find attracting fixed points in the system. We will approximate the local behavior of our model by linearizing the system near its fixed points. We will then apply our findings to a few specific cases of such models including: uniform density, linear distribution, alpha-function pulses, and integrate-and-fire
Thesis (BS) — Boston College, 2013
Submitted to: Boston College. College of Arts and Sciences
Discipline: College Honors Program
Discipline: Mathematics
7
Esposito, Christopher. „Differential Sedimentation In A Mississippi River Crevasse Splay“. ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/1308.
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In this study the patterns of sediment transport and deposition in the channels and receiving basin of a crevasse splay in the modern Mississippi River delta are examined, with emphasis on the development of a distributary mouth bar. Simultaneous hydroacoustic and optical measurements on the mouth bar show that the bar conforms to the progradational stage of an existing conceptual model of mouth bar development. This is confirmed by cores dated using Beryllium-7, which provides a record of the deposition on the bar over a 90-day period. Stratigraphic data from cores obtained on the bar are used to extend the conceptual model to account for variable riverine inputs. A numerical model, developed and validated using field data is capable of representing the fundamental sedimentary processes responsible for mouth bar progradation. These results will be of interest to coastal geologists, engineers and coastal managers alike.
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Davis, Leena. „Architecture of Deep-Marine Interchannel Deposits: Isaac Formation, Windermere Supergroup (Neoproterozoic), Southern Canadian Cordillera“. Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19756.
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The Windermere turbidite system, exposed in the southern Canadian Cordillera, east-central British Columbia, is a continental scale, passive margin, submarine fan system, part of which is well exposed in the Castle Creek study area. Here millimetre- to decametre-scale sedimentological and stratigraphic observations identified five facies in interchannel strata: very thin- to medium-bedded turbidite (F1), thick-bedded turbidite (F2) coarse-tail graded structureless sandstone (F3), mudstone clast breccia (F4) and carbonaceous mudstone (F5) and four architectural elements: channel (AE1), distal levee (AE2), overbank splays (AE3) and crevasse splays (AE4). These elements are assembled into a predictive depositional model that describes the initiation and evolution of sandy splay elements developed in distal levee strata of deep-marine slope channels. These data can be used in hydrocarbon exploration to identify and differentiate splay deposits in core and on seismic, and thereby improve the accuracy of subsurface reservoir models.
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Krejčík, Jan. „Funkce Sinumeriku Operate při programování CNC obráběcích strojů“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444266.
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The diploma thesis is focused on possibilities of spline approximation and interpolation of CAD imported by CAD Reader to control system. First chapter describes mathematical meaning of curves, the second chapter shows possibilities of approximation and interpolation in control system Sinumerik 840D and the third chapter applies these possibilities on practical example.
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Holanda, Pedro Thiago Timbó. „SPST-Index : a self pruning splay tree index for database cracking“. reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/46126.
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Orientador : Prof. Dr. Eduardo Cunha de AlmeidaDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Informática. Defesa: Curitiba, 24/02/2017
Inclui referências : f. 41-43
Área de concentração: Ciência da computação
Resumo: Em Database Cracking, uma coluna de banco de dados se organiza fisicamente, de maneira autônoma, em partições, um índice é então criado para otimizar o acesso a essas partições. A árvore AVL é a estrutura de dados utilizada para implementar esse índice. Contudo, em termos de cache, ela é particularmente ineficiente para consultas de intervalos, já que seus nós acessados apenas algumas vezes e os nós frequentemente acessados estão espalhados por toda a árvore. Esse trabalho apresenta a Self-Pruning Splay Tree (SPST) que é uma estrutura de dados capaz de reorganizar os dados mais e menos acessados, melhorando o tempo de acesso para as partições mais acessadas. Para cada consulta de intervalo, a SPST rotaciona para a raiz os nós que apontam para os valores do predicado da consulta e o valor médio do intervalo. Eventualmente, os nós mais acessados da árvore irão permanecer próximos a raíz, melhorando a utilização da CPU e a atividade de cache. Os nós menos acessados permanecerão próximos às folhas e serão removidos para limparmos dados que não são utilizados, diminuindo o tamanho do índice e obtendo custos de leitura e atualização menores. Palavras-chave: Database Cracking, Índice para Cracking , Árvore Splay.
Abstract: In database cracking, a database is physically self-organized into cracked partitions with cracker indices boosting the access to these partitions. The AVL Tree is the current data structure of choice to implement cracker indices. However, it is particularly cache-inefficient for range queries, because the nodes accessed only for a few times (i.e, "Cold Data") and the most accessed ones (i.e, "Hot Data") are spread all over the index. This work presents the Self-Pruning Splay Tree (SPST) data structure to index database cracking and reorganize "Hot Data" and "Cold Data" to boost the access to the cracked partitions. To every range query, the SPST rotates to the root the nodes pointing to the edges and to the middle value of the predicate interval. Eventually, the most accessed tree nodes remain close to the root improving CPU and cache activity. On the other hand, the least accessed tree nodes remain close to the leaves and are pruned to clean up unused data in order to diminish the storage footprint with significant improvements: smaller lookup/update costs. Keywords: Database Cracking, Cracker Index, Splay Tree.
11
Belazi, Hadi S. „Sedimentology of Middle-Upper Eocene formations, Nafoora-Augila field, Libya (SPLAJ)“. Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/8580.
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Dlouhá, Veronika. „Daně z příjmů v účetnictví“. Master's thesis, Vysoká škola ekonomická v Praze, 2006. http://www.nusl.cz/ntk/nusl-326.
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Diplomová práce shrnuje právní úpravu účetnictví a daní z příjmů právnických osob v České republice. Blíže specifikuje daňově uznatelné a neuznatelné náklady. Upozorňuje na nutné úpravy výsledku hospodaření zjištěného z účetnictví, které je třeba provést pro stanovení základu daně dle zákona o daních z příjmů a následné vypočtení splatné daně z příjmů právnických osob. Obsahuje metody výpočtu a účtování odložené daně. Diplomová práce hodnotí výhody a nevýhody provázanosti účetního a daňového systému.
13
Etturki, S. M. „Management development and organisational effectiveness in developing countries with special reference to Libya (SPLAJ)“. Thesis, Cardiff University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373122.
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Nagy, Miroslav. „Vliv silniční dopravy na chemický stav vodního toku Chvalka“. Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-258661.
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The aim is to assess the chemical status of a water course Chvalka in Prague before/after rain events and the effect of discharge from the Pražský okruh (Východní spojka) using laboratory analysis of water and sediment. From the results we can say that the creek Chvalka is heavily polluted by human activities before mouthing of discharge from Eastern clutch. These runoffs (except Cl) have on the physico-chemical indicators of water quality of the creek little or no influence. In contrast to the heavy metals (Cu, Pb, Cr and Zn), the highest concentrations were measured just at the locations affected by runoffs from Východní spojka. Sampling and laboratory analysis of sediments were for small changes in concentration overtime and time demands made only once. Because of little data to comparison can pronounce that runoff from Východní spojka have an impact on increased concentrations of Zn and maybe even Ni.
15
Wilson, Graham. „Characterization of the Alamitos Heights Fault beneath California State University, Long Beach| A splay of the Newport-Inglewood fault zone“. Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1603102.
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A 3D seismic volume across the campus of California State University, Long Beach images the Alamitos Heights fault, a splay of the Newport-Inglewood fault zone (NIFZ). The Alamitos Heights fault is a zone that strikes approximately N55°W, dips on average 80°SW, and bounds the northeast extent of the Seal Beach oil field structure. It plays a role in the complex evolution of the Newport-Inglewood fault zone within the Los Angeles sedimentary basin, which is closely related to timing and trapping mechanisms of nearby oil fields. Its origin and development may be related to fault steps or discontinuities along the main NIFZ. Seismic evidence suggests the Alamitos Heights fault may have originated as a transtensional feature during the Miocene before transitioning to its current transpressional stress regime.
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Škvarenina, Ľubomír. „Interpolace signálů pomocí NURBS křivek“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220618.
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Diploma thesis deals with image interpolation. The aim of this work is to study theoretically and then describe the nature of the various methods of image interpolation and some of them implemented in the program MATLAB. The introductory part of this work theoretically closer to important terms that are closely related to this topic of digital image processing sufficient to understand the principle. In the following of the thesis will be discussed all of today's commonly used method of image interpolation. Will hear all about the method of image interpolation using nearest neightbor interpolation and image help of polynimals such as (bi)linear, (bi)quadratic and (bi)kubic method. Then work theoretically analyzes the theory of individual species curves and splines. More specifically, coming to their most frequently used variants of B-spline curves and ther generalizations called NURBS, with addressing the problem of interpolating these curves. The final chapter consists of the results achieved in the program MATLAB.
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Valenza, Jeffery Michael. „Redbeds of the Upper Entrada Sandstone, Central Utah: Facies Analysis and Regional Implications of Interfingered Sabkha and Fluvial Terminal Splay Sediments“. BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6112.
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First distinguished from other sedimentary successions in 1928, the Entrada Sandstone has been the subject of numerous studies. The western extent of the formation was initially described as laterally continuous "earthy" red beds, and categorized as sub- to supratidal marine-influenced sediments. Recent workers have reexamined the sedimentary facies hosted by the Entrada Sandstone, and findings suggest purely terrestrial depositional environments. Several outcrops of the upper Entrada hosted peculiar sedimentary features, including undulatory and convex-upward, parallel-laminated bedforms, reminiscent of hummocky cross-stratification- unexpected features in a terrestrial environment. The purpose of this study was to collect detailed outcrop measurements of these and other facies present in the upper Entrada Sandstone and to place them in context within a regional sedimentary system. Measured section data was analyzed and divided into sixteen primary facies based on textures, features, bedforms, grain size, and other characteristics. Surfaces were also noted and described. Each facies and surface was recognized to have developed under specific depositional or flow conditions, including eolian, paleosol, and fluvial subcritical, critical, supercritical, and waning flow. Primary facies were grouped into observed and interpreted facies associations. A depositional environment was then assigned to each facies association. These environments included sabkha, overbank splay/paleosol, distal terminal splay, and hyper-distal terminal splay. Ancient analogs were found in the Blomidon, Skagerrak, and Ormskirk Formations, which have been described as dryland fluvial systems that terminated onto saline mudflats (sabkhas). Modern analogs were found in the central Australian continent, in the form of fluvial terminal splays in ephemeral Lakes Eyre and Frome. The sedimentary system of the upper Entrada Sandstone of the San Rafael Swell is interpreted as an interfingering fluvial terminal splay and inland sabkha system. These are marked by a wide array of sedimentary structures representing stark extremes, from hyperarid to flash flooding conditions. During arid conditions, the only source of water was evaporative pumping of a high water table. During the rare occasions when surface water flowed through the system, flash flooding events produced the highest stage of supercritical flow described in geological literature. The succession of these facies reveals allogenic and autogenic processes active at the time of deposition, including episodes of tectonic uplift and fluvial avulsions.
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Rivers, Roger Troy. „Experimental Testing of CFRP Splays Bonded to Uniaxial Fabric“. Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/321612.
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The use of fiber reinforced polymers (FRP's) for structural repair or retrofit has increased significantly in the last decade, with adoption for civil infrastructure occurring only in the last 20 years. These products are most often used to increase the capacity of damaged or deteriorated structures. Much research has been performed in the arena of testing of various FRP's bonded to both concrete and masonry substrates, the majority of which focusing on three areas; flexural strengthening, in-plane shear strengthening, and mechanical anchoring. Anchorage is commonly the limiting factor in the application of FRP's, due to the inability of the edge of the polymer matrix to reliably extend beyond a point of zero-interfacial stress. Where interfacial stresses exist and the FRP is terminated localized disbondment often occurs, these localized failures then propagate across the entire bond of the structural system. Various mechanical termination details have been tested to mitigate the potential failure modes near the ends of the fabric. There, however, has been very limited research performed on the behavior of dowels which are installed parallel to the FRP fabric and splayed onto the FRP fabric matrix. In this research the mechanical properties of carbon fiber reinforced polymer (CFRP) dowels with a parallel orientation to uniaxial carbon fabric are experimentally tested to determine the tensile capacity of "dowel to splay" CFRP connections and to discover any dominant failure modes.
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Zhang, Yanli. „Control of Disclinations and Walls in New Types of Display Devices“. Kent State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=kent1132453741.
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Ondroušková, Jana. „Modelování NURBS křivek a ploch v projektivním prostoru“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228872.
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In the first part I discuss ancestors of NURBS curves and surfaces, rather Ferguson, Beziere, Coons and B-spline curves and surfaces and furthermore B-spline functions. In the second part I devote to NURBS curves and surfaces, their description as a linear combination of B-spline functions in the projective space. I specify conical arcs more detailed, their submit in the projective space and NURBS surfasec given as tensor product of NURBS curves. Last part is devote to describtion programs for modeling conicals and NURBS surface.
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Kingston, Derek B. „Decentralized Control of Multiple UAVs for Perimeter and Target Surveillance“. BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1174.
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With the recent development of reliable autonomous technologies for small unmanned air vehicles (UAVs), the algorithms utilizing teams of these vehicles are becoming an increasingly important research area. Unfortunately, there is no unified framework into which all (or even most) cooperative control problems fall. Five factors that affect the development of cooperative control algorithms are objective coupling, communication, completeness, robustness, and efficiency. We classify cooperative control algorithms by these factors and then present three algorithms with application to target and perimeter surveillance and a method for decentralized algorithm design. The primary contributions of this research are the development and analysis of decentralized algorithms for perimeter and target surveillance. We pose the cooperative perimeter surveillance problem and offer a decentralized solution that accounts for perimeter growth (expanding or contracting) and insertion/deletion of team members. By identifying and sharing the critical coordination information and by exploiting the known communication topology, only a small communication range is required for accurate performance. Convergence of the algorithm to the optimal configuration is proven to occur in finite-time. Simulation and hardware results are presented that demonstrate the applicability of the solution. For single target surveillance, a team of UAVs angularly spaced (i.e. in the splay state configuration) provides the best coverage of the target in a wide variety of circumstances. We propose a decentralized algorithm to achieve the splay state configuration for a team of UAVs tracking a moving target and derive the allowable bounds on target velocity to generate a feasible solution as well as show that, near equilibrium, the overall system is exponentially stable. Monte Carlo simulations indicate that the surveillance algorithm is asymptotically stable for arbitrary initial conditions. We conclude with high fidelity simulation and actual flight tests to show the applicability of the splay state controller to unmanned air systems.
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Koutníková, Pavlína. „Účetnictví a daně“. Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-85224.
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This final thesis deals with accounting and taxes in terms of consideration and assessment of mutual linkage between these two systems. On the basis of historical development analysis it has been carried out an assessment of the impact of taxation on the fair accounting view. The thesis also includes section concerning transformation of operating profit on tax base for corporate income tax through cleaning of tax revenues and excluding of non-deductible expenses. An integral part of the thesis covers topic of institute of deferred tax, reasons for its creation, calculation and billing. An practical example illustrating given procedures is a part of the closing section.
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Novák, Jiří. „Metody FFD“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318794.
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The diploma thesis deals with the topic of free-form deformations. The main goal of this work were elaboration of theoretical knowledge about this issue and the programming of selected methods od free-form deformations. The first part describes the required spline theory, matrix calculus and free-form deformations. The resulting version shows three programs. The first program compares the selected free-form deformation methods to the example of the 4x4 control point grid. The second program serves as a generalization for the general case of grid of control points. The last program is based on direct manipulation of arbitrary surface point and following recomputation of the control points to obtain demanded shape.
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Majer, Jakub. „Daň z příjmů právnických osob“. Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-114098.
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This diploma thesis deals with the corporate income tax. At first there are explained adjustments of accounting profit in the procedure defining the tax base, the most important part of which relates to tax deductible and non-deductible expenses. Subsequently there is defined how to determine the amount of payable tax and how to report this tax in financial statements. There is also mentioned the impact of payable tax on the disposable profit. The hypothesis, that in most cases the payable income tax is higher than the product of accounting profit before tax and tax rate, is tested in the concluding part of this thesis.
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Franěk, Pavel. „Analýza variability srdečního rytmu pomocí rekurentního diagramu“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220048.
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The aim of this thesis is to describe the variability of cardiac rhythm and familiarity with the methods of the analysis, ie by monitoring changes in heart rhythm electrogram signal recording and using the methods in the time domain using recurrent diagram. The work describes the quantification of the methods and possibilities of quantifiers in the evaluation of heart rate variability analysis. It also describes the clinical significance of heart rate variability and diagnostic capabilities changes of heart rate variability caused by ischemic heart disease. The practical part describes how to create applications in Matlab to calculate the quantifiers analysis of heart rate variability in the time domain using recurrent diagram. The calculation was made of the positions R wave elektrogram signal isolated rabbit hearts. The calculated values of quantifiers both methods were statistically evaluated and discussed.
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Tomek, Peter. „Approximation of Terrain Data Utilizing Splines“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236488.
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Pro optimalizaci letových trajektorií ve velmi malé nadmorské výšce, terenní vlastnosti musí být zahrnuty velice přesne. Proto rychlá a efektivní evaluace terenních dat je velice důležitá vzhledem nato, že čas potrebný pro optimalizaci musí být co nejkratší. Navyše, na optimalizaci letové trajektorie se využívájí metody založené na výpočtu gradientu. Proto musí být aproximační funkce terenních dat spojitá do určitého stupne derivace. Velice nádejná metoda na aproximaci terenních dat je aplikace víceroměrných simplex polynomů. Cílem této práce je implementovat funkci, která vyhodnotí dané terenní data na určitých bodech spolu s gradientem pomocí vícerozměrných splajnů. Program by měl vyčíslit více bodů najednou a měl by pracovat v $n$-dimensionálním prostoru.
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Deserranno, Dimitri. „A Multi-Scale Finite Element Model of the Cardiac Ventricles“. Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1148984314.
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Agudelo, Zambrano William Mauricio. „Imagerie sismique quantitative de la marge convergente d'Equateur-Colombie : application des méthodes tomographiques aux données de sismique réflexion multitrace et réfraction-réflexion grand-angle des campagnes SISTEUR et SALIERI“. Paris 6, 2005. https://tel.archives-ouvertes.fr/tel-00010415.
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Gulliford, Alice Rachel. „Controls on river and overbank processes in an aggradation-dominated system : Permo-Triassic Beaufort Group, South Africa“. Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/controls-on-river-and-overbank-processes-in-an-aggradationdominated-system-permotriassic-beaufort-group-south-africa(63893677-9b23-4f07-8405-627354fb170a).html.
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The Permo-Triassic lower Beaufort Group fluvial deposits extend over 100s of kilometres within the Karoo Basin, South Africa. A detailed study of the depositional architecture and stacking patterns of sand bodies within a 900 m thick succession has enabled interpretation of the controls on ancient river channel and overbank processes. Facies include very fine- to medium-grained sandstone, intra-formational conglomerate, mudstone and palaeosols. Channel-belts are dominated by upper flow regime structures, consistent with a flashy to ephemeral fluvial system. The overbank deposits comprise splays interbedded with purple, green and grey mudstone; these floodplain colour changes signify water table fluctuations. A hierarchy of channel-related elements has been established that recognises beds, bedsets, storeys, channel-belts, complexes and complex sets. Each channel-belt may be single- or multi-storey, whereby one storey represents the complete cut and fill cycle of a single migrating river, comprising bar accretion elements and channel-abandonment fill. The abandonment fill elements often consist of heterolithic plugs of climbing ripple-laminated very fine-grained sandstone, or interbedded claystone with siltstone. The Beaufort channel-belts preserve either lateral- or downstream-accretion patterns, or a combination. Each belt has either a lenticular or tabular geometry, recognisable by an erosional base overlain by intra-formational conglomerate lag and barform deposits. Genetically related channel-belts cluster to form complexes, of which two broad styles have been identified: Type A) laterally and vertically stacked channel-belts, and Type B) sub-vertically stacked channel-belts. There is evidence of localised clustering of sub-vertically stacked channel-belts adjacent to extensive overbank mudstone deposits. The apparent lack of a well-defined ‘container’ surface with mappable margins, suggests that this stacked channel-belt architecture represents an avulsion complex rather than a palaeovalley-fill. The lateral and stratigraphic variability in fluvial-overbank architecture is interpreted as the interplay of several controls. Allogenic forcing factors include, tectonic subsidence that influences accommodation, sediment supply, and high frequency climate cycles associated with the flashy discharge regime and expressed in the mudrock colour changes and distribution of palaeosols. The depositional river style, variability in channel-belt stacking patterns and compensational stacking of some channel-belt/splay complexes is interpreted to be the result of autogenic channel avulsion, supported by an absence of significant erosion. The relative merits of basin-axial trunk river and distributive fluvial system (DFS) models are assessed from detailed architectural and stratigraphic outcrop studies.
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Maknickas, Ramūnas. „Kompiuterine vaizdų analize pagrįstos sistemos, skirtos galvos smegenų tyrimams, analizė ir algoritmų plėtra“. Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050523_162613-36873.
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One of the main problems in neurosurgery is knowledge about human brain. It's very important to see the whole brain with its critical neurostructures in virtual reality. This document is about three dimensional human brain visualization strategies. Review most recently used three dimensional objects building strategies from two dimensional medical MRI images. This task was split into 4 significant problems: image segmentation, point-sets correspondence, image registration and its frequently used transformation functions with image matching measurements. All these problems were addressed reader to show most recently used algorithms with advantages and disadvantages. Atlas types, patterns and maps survey was introduced with widely popular brain model coordinate systems. In order to find a better correspondence between two point sets it was modeled a new robust and accurate Overhauser spline points location optimization algorithm. Instead of deletion outlier points from overloaded point set, this algorithm generates more points in other set at optimized points locations. Determination of an accurate point location and choosing the correct transformation function are the key steps in registration process. Whereas registration is vital task in precise human brain visualization for neurosurgeries at preoperative and intraoperative process.
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Mandryková, Lucie. „Účetní závěrka akciových společností“. Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-11089.
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The primary purpose of this thesis is to describe all areas of presentation of the financial statements in shareholders corporation according to the Czech accounting standards and Czech legal environment. Theoretical part of the thesis describes the general principles of the preparation of the financial statements followed by detailed analysis of four key areas associated with the financial statements. Theoretical part starts with focus on the year ending accounting procedures including inventory, control of accruals and deferrals, impairment of assets, depreciation, appreciation and tax due as well as deferred tax. Subsequently, it describes the actual closing of the accounts followed by the description of the financial statements. Theoretical part is completed by description of all related subsequent events such as audit, declaration of taxes, preparation of annual report and publication duties of the corporation. Practical part of the thesis focused on application of the theoretical findings on the process of the 2008 financial statements preparation of Planet A Corporation and evaluation of the financial statements and accounting as a true presentation of the company. Discrepancies and potential mistakes were commented with recommendation of possible solutions presented to the company management. Finally, the financial statements were considered as representing the true financial situation of the company.
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Agudelo, William. „Imagerie sismique quantitative de la marge convergente d'Equateur-Colombie : Application des mèthodes tomographiques aux données de sismique réflexion multitrace et réfraction-réflexion grand-angle des campagnes SISTEUR et SALIERI“. Phd thesis, Université Pierre et Marie Curie - Paris VI, 2005. http://tel.archives-ouvertes.fr/tel-00010415.
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Mon travail de thèse se propose d'étudier la structure, les propriétés physiques et les processus géodynamiques de la zone de subduction d'Equateur-Colombie grâce à l'adaptation et le développement d'outils d'imagerie sismique (inversion de formes d'ondes 'alias' tomographie en diffraction) et à leur application aux données de sismique marine multitrace (MCS) et grand-angle OBS (WA) acquises en Equateur-Colombie pendant les campagnes SISTEUR et SALIERI. Ces outils m'ont permis de réaliser une imagerie fine et quantitative à trois niveaux : l'imagerie superficielle (~ 0-3 km), l'imagerie à profondeur intermédiaire (~ 3-10 km) et l'imagerie profonde (~ 10-30 km). Dans le domaine superficiel, j'ai effectué une cartographie fine et quantitative des propriétés physiques des sédiments au voisinage du BSR (Bottom Simulating Reflector), interpreté comme la base de stabilité des hydrates de gaz. Sur le profil SIS-40 situé sur la marge sud de la Colombie, j'ai pu identifier la présence de failles qui perturbent localement le BSR. Les résultats présentés sous la forme d' une série de logs adjacents de l'image migrée en profondeur, montrent que certaines régions du BSR sont caractérisées par une augmentation de la vitesse (1470-1650 m/s), indiquant la présence d'une faible quantité d'hydrates de gaz au dessus du BSR; d'autres zones situées immédiatement sous le BSR sont caractérisées par une diminution de la vitesse (~1200 m/s), liée à la présence de gaz libres piégés sous la couche d'hydrate de gaz. A des profondeurs moyennes j'ai étudié la structure du chenal de subduction (profil SIS-72). Le chenal constitue la limite mécanique entre la plaque chevauchante et la plaque plongeante. Il est délimité à son toit par un fort réflecteur interprété comme le décollement interplaque et à sa base par le toit très réflectif de la croûte océanique en subduction. L'imagerie fine et quantitative des propriétés physiques du décollement interplaque permet de mieux comprendre le rôle de la circulation des fluides et des variations lithologiques et physiques, sur le couplage mécanique inter-plaque. En raison de la sensibilité de la méthode de tomographie en diffraction au macro-modèle de vitesse, un code de correction de ce modèle a été implémenté, afin d'obtenir des images tomographiques fiables (i.e. géométrie et amplitudes correctes). Du fait de la bande passante limitée de la source et de la longueur du dispositif d'acquisition limitée à 4.5 km, les images tomographiques ont une résolution spatiale limitée : l'image tomographique présente un déficit des petits et grands nombre d'onde (fréquences spatiales) limitant ainsi l' interprétation géologique des paramètres physiques cartographiés. Un traitement spécifique basé sur la modélisation des traces sismiques a été implémenté. L'image tomographique, traitée comme une série de traces verticales, constitue la donnée observée. L'espace des modèles est constitué par un ensemble de modèles impulsionnels et unidimensionnels de Terre construits aléatoirement. Ces modèles sont dégradés par convolution avec une estimation de l'ondelette source afin de fournir une représentation synthétique de l'image tomographique « observée ». La minimisation de la fonction coût entre les traces migrées et les traces synthétiques est effectuée dans le cadre d'une inversion globale par recuit simulé (VFSA= « Very Fast Simulated Annealing »). Le modèle moyen issu de cette procédure fournit un modèle 2D fin de vitesse, fonction de la profondeur et comparable à la limite de la résolution théorique de la source. A l'issue de ce traitement, des perturbations de vitesse positives sont mises en évidence au toit de la croûte, et d'autres négatives accompagnent certains segments du niveau du décollement. Ces dernières sont probablement associées à la présence de fluides. Le domaine plus profond a été étudié à partir des données MCS et WA dans le double but (1) d'améliorer la résolution spatiale des images sismiques du Moho et du contact interplaque en relation avec la zone sismogène, et (2) de détecter la présence d'anomalies crustales de vitesse et d'analyser leur relation avec les zones d'aspérité sismologiques. L'utilisation conjointe des données de sismique MCS et WA a été mise en oeuvre pour prolonger vers le bas les images de sismique verticale et tenter ainsi d'établir une relation entre les processus profonds et les manifestations en surface. L'application de la chaîne de traitement au profil SIS-44 a permis d'obtenir un modèle de vitesse bien contraint jusqu'à 25 km de profondeur. Ce modèle met en évidence des réflecteurs profonds (Moho et contact interplaque ) et des réflecteurs plus superficiels (splay fault), dont l'interprétation était initialement incertaine sur les images migrées en temps.
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PITNER, Ondřej. „Vyhodnocení srážkových úhrnů ovlivňujících erozní splachy v lokalitě Jenín“. Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-46209.
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ŠEFL, Jakub. „Vyhodnocení srážkových úhrnů ovlivňujících erozní splachy ve vybraném povodí“. Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-48186.
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The aim of the thesis is a calculation of erosion flushes of the catchment of Malče - Budský stream. The surveyed stream flows through the Soběnov highland area of Besednice, Malče and Soběnov municipalities. The thesis also describes the water catchment model from pedological, geological and climatological perspective. The main objective is to compare different calculation methods of erosion flushes in the catchment. The comparison covers the Universal Soil Loss Equation by Wischmeier and Smith and the CN (Curve Number) Method, which is used for the total runoff and culminating flow calculation. A modified Universal Soil Loss Equation by Williams and Berndt is used to determine the erosion flushes. The results of both methods mentioned above are compared at the conclusion of the thesis.
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FANYANGHSIN und 范揚鑫. „Splay-Tree Based Android Binder Driver“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/39996195955731743957.
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碩士國立中央大學
資訊工程學系在職專班
101
Smart Phones, powered by miscellaneous mobile operating systems, is getting common in our lives. This trend comes with descending of hardware cost. Most of Smart Phone devices are powered by Google Android today. In Android architecture design. The importance of IPC (Inter Process Communication)[1] takes a significant role than any other modern mobile operating system. All IPCs , including application/application, application/system service, system service/system service, happens in Android-Framework are based Binder Framework, which is a descendant of Open Binder[2]. Our assumption is that Binder Framework has locality. If replacing the Red-Black Tree[4] based node managing system by Splay-Tree[3]. The performance should be better. This papper evaluates that the performance of connectivity of IPC node generated by Android System Service has been improved. Consider the popularity of Android devices today. It may save huge amount of computing resources.
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Vaňková, Barbora. „Vývoj dynamického modelu pro odhad radonové zátěže budov“. Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-277055.
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Vaňková, Barbora. „Vývoj dynamického modelu pro odhad radonové zátěže budov“. Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-312565.
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Title: Dynamic model for estimation of radon concentration in buildings Author: Barbora Vaňková Department: Department of probability and mathematical statistics Supervisor: Ing. Marek Brabec, Ph.D. Supervisor's e-mail address: mbrabec@cs.cas.cz Abstract: In the present work there is described the method for estimation of functi- onal data from discrete values and basic methods of functional data analysis. 1
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Orsega, Michael Cajetan. „Sketchmate [electronic resource] : a digital drawing tool for the splay tree data structure /“. 2009. http://etd.utk.edu/2009/Spring2009Dissertations/OrsegaMichaelCajetan.pdf.
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Thesis (Ph. D.)--University of Tennessee, Knoxville, 2009.Title from title page screen (viewed on Nov. 2, 2009). Thesis advisor: Bradley T. Vander Zanden. Vita. Includes bibliographical references.
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Αντωνίου, Δημήτριος. „Μελέτη και ανάπτυξη αυτοοργανώμενων δομών δεδομένων“. Thesis, 2006. http://nemertes.lis.upatras.gr/jspui/handle/10889/1419.
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Θέμα της παρούσης διπλωματικής εργασίας αποτελεί η μελέτη, ανάπτυξη
και πειραματική επιβεβαίωση αλγοριθμικών τεχνικών για την σχεδίαση
αυτοοργανώμενων δομών δεδομένων (self-organizing data structures) και η
ανάπτυξη τυχαιοποιημένων εκδόσεών τους.
Μια αυτοοργανώμενη δομή δεδομένων διαθέτει κάποιον αλγόριθμο για να
αναδιοργανώνει τους δείκτες και τα δεδομένα κατάστασης μετά από κάθε
πρόσβαση ή πράξη . Ο αλγόριθμος αυτοοργάνωσης είναι σχεδιασμένος ώστε
αντιδρώντας σε αρχικά άγνωστες ιδιότητες της ακολουθίας αιτήσεων (request
sequence), να οδηγεί τη δομή δεδομένων σε κατάσταση πλεονεκτική για τις
ιδιότητες της ακολουθίας με αποτέλεσμα τη μείωση του χρόνου που χρειάζεται
στο μέλλον ανά πράξη. Ο πρώτος αλλά και ο μόνος μέχρι σήμερα πιθανός υποψήφιος
αλγόριθμος αναζήτησης σε δένδρο που μπορεί να είναι Ο(1)-ανταγωνιστικός
είναι το splay δένδρο (splay tree) που παρουσιάστηκε από τους Sleator και
Tarjan [1]. Στην εργασία των Sleator και Tarjan παρουσιάζονται κάποιες
εικασίες, οι οποίες δεν έχουν αποδειχθεί. Σημαντικότερη είναι η εικασία
δυναμικής βελτιστότητας (dynamic optimality conjecture) σύμφωνα με την οποία
το splay δένδρο είναι Ο(1)-ανταγωνιστικό. Η εικασία δυναμικής δακτυλοδότησης
(dynamic finger conjecture) και η εικασία διαπέρασης (traversal conjecture) είναι
αληθείς, αν είναι αληθής η εικασία δυναμικής βελτιστότητας. Ο Cole [3], [4]
προσπάθησε να αποδείξει την ορθότητα της εικασίας δυναμικής δακτυλοδότησης
σε μια από τις σημαντικότερες εργασίες για τα splay δένδρα. O J. Iacono [2]
ανέπτυξε εναλλακτικές δομές δεδομένων που έχουν χρόνο χειρότερης
περίπτωσης ανά πράξη (και όχι επιμερισμένο κόστος) της τάξης του Ο(logn), σε
αντιδιαστολή με τον Ο(n) χρόνο χειρότερης περίπτωσης των splay trees. Σε
αντιπαράθεση με τη δομή του Iacono, οι Mihai Badoiu και Erik D. Demaine
παρουσίασαν μια δυναμική δομή αναζήτησης[7], η οποία επιτυγχάνει την
ενοποιημένη ιδιότητα και που είναι απλούστερη από τη δομή του Iacono. Μεταξύ
όλων των δυναμικών δομών αναζήτησης με βάση τις συγκρίσεις , η
συγκεκριμένη δομή έχει τον καλύτερο χρόνο εκτέλεσης. Εκτός της παραπάνω
δομής, ο Demaine ανέπτυξε ένα Ο(loglogn) ανταγωνιστικό online δυαδικό δέντρο
αναζήτησης[5] , βελτιώνοντας το μέχρι πρότινος βέλτιστο ανταγωνιστικό
ποσοστό της τάξης Ο(logn). Αυτή είναι η πρώτη μεγάλη βελτίωση της εικασίας
δυναμικής βελτιστότητας (dynamic optimality conjecture) των Sleator και Tarjan ,
σύμφωνα με την οποία υπάρχουν Ο(1) ανταγωνιστικά δυαδικά δέντρα
αναζήτησης. Σε σχέση με τη δυναμική βελτιστότητα των Splay trees, σημαντική
συνεισφορά αποτελεί και η εργασία του George F. Georgakopoulos[6]. Ο
George F. Georgakopoulos παρουσιάζει μια επέκταση της splay τεχνικής , την
οποία ονομάζει chain-splay(αλυσιδωτό splay) . Τα chain-splay δέντρα
εφαρμόζουν splay στο στοιχείο που προσπελαύνουμε προς τη ρίζα όπως
ακριβώς γίνεται και στα κλασικά splay trees, αλλά εκτελούν και μερικές τοπικές
splay πράξεις τακτοποίησης κάτω από το στοιχείο που προσπελάσαμε. Αποδεικνύεται πως η τεχνική chain–splay είναι Ο(loglogn) ανταγωνιστική σε
σχέση με οποιοδήποτε offline αλγόριθμο αναζήτησης. Tέλος, ο George F.
Georgakopoulos [9] έδωσε ένα νέο λήμμα επαναζύγισης για τα splay δέντρα και
με βάση αυτό το λήμμα, αποδεικνύει πως τα splay δέντρα είναι ανταγωνιστικά
προς κάθε κλάση δυναμικών ισοζυγισμένων δέντρων.
Οι παραπάνω δομές θα μελετηθούν τόσο σε θεωρητικό όσο και σε
πειραματικό επίπεδο με σκοπό την εξαγωγή χρήσιμων συμπερασμάτων σε
σχέση με την αποδοτικότητά τους αλλά και με σκοπό την καταγραφή των ακόμη
ανοικτών προβλημάτων και των προοπτικών επίλυσης τους. Επιπλέον, θα
παρουσιαστούν τυχαιοποιημένες εκδόσεις των δομών των Demaine και
Georgakopoulos. Οι δομές αυτές θα υλοποιηθούν και η απόδοσή τους θα
τεκμηριωθεί τόσο πειραματικά όσο και θεωρητικά. Σημαντικής σημασίας είναι η
σύγκρισή τους με τις αρχικές δομές, ώστε να εξαχθούν συμπεράσματα σχετικά
με την συμβολή της τυχαιοποίησης στη βελτίωση της απόδοσης των δομών.-
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Lai, Po-Chung, und 賴柏仲. „Transition time of Splay to Bend state in Optical Compensation Bend Mode Liquid Crystal Cell“. Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51674105831011392018.
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碩士國立彰化師範大學
光電科技研究所
98
We investigate the transformation processes of the optically compensated bend （OCB）cell. The observed results reveal that the transformation time of the cell from the Ha state to the bend state is well below that of the cell from the Hs state to the bend state. The transformation time of the cell from the splay state to the bend state is shorter in the cell with the higher pretilt angle. The obtained results also reveal that the lifetime of the Hs state increases with increasing voltage. The lifetime of the Hs state can be modified by generating polymer networks in the cell.
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Rich, Charles, und Richard C. Waters. „The Programmer's Apprentice Project: A Research Overview“. 1987. http://hdl.handle.net/1721.1/6054.
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The goal of the Programmer's Apprentice project is to develop a theory of how expert programmers analyze, synthesize, modify, explain, specify, verify, and document programs. This research goal overlaps both artificial intelligence and software engineering. From the viewpoint of artificial intelligence, we have chosen programming as a domain in which to study fundamental issues of knowledge representation and reasoning. From the viewpoint of software engineering, we seek to automate the programming process by applying techniques from artificial intelligence.