Global ETD Search

21	Bayes Filters with Improved Measurements for Visual Object Tracking / Bayes Filter mit verbesserter Messung für das Tracken visueller Objekte Liu, Guoliang 20 March 2012 (has links) No description available. 004 Informatik Mathematics and Computer Science Maschinelles Sehen Bayes Filter Objekt Tracking Information Filter Straßen Tracking Sensorfusion farbinvariante Histogramme Quadratwurzel Filter Computer Vision Bayes Filters Object Tracking Information Filter Lane Tracking Sensor Fusion Color Invariant Histogram Square-Root Filter 54.74 50.22 50.23 50.25 AHI 000: Computing Methodologies guided systems} control}
22	Odhad rizika v měsíčním horizontu na základě dvouleté časové řady / Estimations of risk with respect to monthly horizon based on the two-year time series Myšičková, Ivana January 2014 (has links) The thesis describes commonly used measures of risk, such as volatility, Value at Risk (VaR) and Expected Shortfall (ES), and is tasked with creating models for measuring market risk. It is concerned with the risk over daily and over monthly horizons and shows the shortcomings of a square-root-of-time approach for converting VaR and ES between horizons. Parametric models, geometric Brownian motion (GBM) and GARCH process, and non-parametric models, historical simulation (HS) and some its possible improvements, are presented. The application of these mentioned models is demonstrated using real data. The accuracy of VaR models is proved through backtesting and the results are discussed. Part of this thesis is also a simulation study, which reveals the precision of VaR and ES estimates.
23	Um problema de extensão relacionado a raiz quadrada do Laplaciano com condição de fronteira de Neumann / An extension problem related to the square root of the Laplacian with Neumann boundary condition Alves, Michele de Oliveira 15 December 2010 (has links) Neste trabalho definimos o operador não local, raiz quadrada do Laplaciano com condição de fronteira de Neumann, através do método de extensão harmônica. O estudo foi feito com o auxílio das séries de Fourier em domínios limitados, como sendo o intervalo, o quadrado e a bola. Posteriormente, aplicamos nosso estudo, à problemas elípticos não lineares envolvendo o operador não local raiz quadrada do Laplaciano com condição de fronteira de Neumann. / In this work we define the non-local operator, square root of the Laplacian with Neumann boundary condition, using the method of harmonic extension. The study was done with the aid of Fourier series in bounded domains, as the interval, the square and the ball. Subsequently, we apply our study, the nonlinear elliptic problems involving non-local operator square root of the Laplacian with Neumann boundary condition. condições de fronteira de Neumann extensão harmônica Fourier series harmonic extension Neumann boundary conditions non-local operator nonlinear problems operador não local problemas não lineares raiz quadrada do Laplaciano série de Fourier square root of the Laplacian
24	Algoritmos de aproximação de raízes quadradas CAMPOS, Danilo Albuquerque de 22 August 2014 (has links) Submitted by (lucia.rodrigues@ufrpe.br) on 2017-03-28T15:03:54Z No. of bitstreams: 1 Danilo Albuquerque de Campos.pdf: 453917 bytes, checksum: 1b07ec11128857b2e96af37543e335fe (MD5) / Made available in DSpace on 2017-03-28T15:03:55Z (GMT). No. of bitstreams: 1 Danilo Albuquerque de Campos.pdf: 453917 bytes, checksum: 1b07ec11128857b2e96af37543e335fe (MD5) Previous issue date: 2014-08-22 / In this work we are interested in showing three algorithms rational approximation of square roots by methods unknown or underutilized by teachers of elementary and secondary education. We begin by defining numerical sequence and convergence of sequences, will discuss the need to expand the concept of rational number and demonstrate the irrationality of the diagonal of a square. Prove an important theorem known in the literature as Dirichlet’s theorem and finally elencaremos three methods of approximating the square roots of natural non-perfect square numbers, very simple to be worked on in the classroom that are rational algorithm aproximção of Hiero of Alexandria, Theon’s Ladder and the Pell-Fermat equation, sende latter discursão fundamental to who will perform on the relationship of the three methods presented. / Neste trabalho estamos interessados em mostrar três algoritmos de aproximação racional de raízes quadradas por métodos pouco utilizados ou desconhecidos pelos professores do ensino fundamental e médio. Iniciaremos definindo sequência numérica e convergência de sequências, discutiremos sobre a necessidade de ampliação do conceito de número racional e demonstraremos a irracionalidade da diagonal de um quadrado. Provaremos um importante Teorema conhecido na literatura como o Teorema de Dirichlet, e por fim elencaremos três métodos de aproximação de raízes quadradas de números naturais não quadrados perfeitos, muito simples de serem trabalhados em sala de aula que são: O algoritmo de aproximação racional de Hierão de Alexandria, A escada de Theon e a Equação de Pell-Fermat, sendo este último fundamental para discussão que iremos realizar sobre a relação dos três métodos apresentados. Theorem of Dirichlet Square root Equação de Pell-Fermat Escada de Theon Algoritmos de Hierão Teorema de Dirichlet Aproximação racional Raiz quadrada Rational approximation Algorithms Hiero Ladder Theon Pell-Fermat equation CIENCIAS EXATAS E DA TERRA::MATEMATICA
25	Um problema de extensão relacionado a raiz quadrada do Laplaciano com condição de fronteira de Neumann / An extension problem related to the square root of the Laplacian with Neumann boundary condition Michele de Oliveira Alves 15 December 2010 (has links) Neste trabalho definimos o operador não local, raiz quadrada do Laplaciano com condição de fronteira de Neumann, através do método de extensão harmônica. O estudo foi feito com o auxílio das séries de Fourier em domínios limitados, como sendo o intervalo, o quadrado e a bola. Posteriormente, aplicamos nosso estudo, à problemas elípticos não lineares envolvendo o operador não local raiz quadrada do Laplaciano com condição de fronteira de Neumann. / In this work we define the non-local operator, square root of the Laplacian with Neumann boundary condition, using the method of harmonic extension. The study was done with the aid of Fourier series in bounded domains, as the interval, the square and the ball. Subsequently, we apply our study, the nonlinear elliptic problems involving non-local operator square root of the Laplacian with Neumann boundary condition. condições de fronteira de Neumann extensão harmônica operador não local problemas não lineares raiz quadrada do Laplaciano série de Fourier Fourier series harmonic extension Neumann boundary conditions non-local operator nonlinear problems square root of the Laplacian
26	Estimating the Ratio of Two Poisson Rates Price, Robert M., Bonett, Douglas G. 01 September 2000 (has links) Classical and Bayesian methods for interval estimation of the ratio of two independent Poisson rates are examined and compared in terms of their exact coverage properties. Two methods to determine sampling effort requirements are derived. agresti-coull interval bayesian interval binomial model confidence interval likelihood-based interval log-linear model logarithmic transformation noninformative prior poisson rate square-root transformation wald interval wilson interval Mathematics and Statistics
27	Estimation of economically optimal potassium rates for soybean production in Mississippi: comparing different yield response functions Akakpo, Felix 06 August 2021 (has links) (PDF) This study estimated soybean yield responses to K fertilizer using trials data from 18 sites in Mississippi from 2011-2016. Eight response functions were fitted, including linear, linear plateau, quadratic, quadratic-plateau, square root quadratic, spherical plateau, exponential, and exponential-plateau functions. The ratio of high responsive, low responsive, and no responsive sites to K rates is 3:3:12 respectively. The response functions led to different predicted optimal K rates, and the best response function for each site was determined by the Vuong closeness test and economic loss analysis. The predicted economically optimal K rates are 157, 73, and 0 lb/acre for high, low, and no response sites respectively, and the average optimal K rate is 55 lb/acre. Compared to the currently used regional uniform K fertilizer rate of 80 lb/acre, the response-based K rates are expected to generate soybean production gain of about $14 per acre for Mississippi soybean producers. Economic return Models Comparison Models' Selection Criteria Best Model Optimal K Rate for Individual site Optimal K Rate for Group Sites Linear Response Quadratic Response Linear Response Plateau Quadratic Response Plateau Square Root Quadratic Spherical Plateau Exponential and Exponential Plateau
28	Hardware-Aided Approaches for Unconditional Confidentiality and Authentication Bendary, Ahmed January 2021 (has links) No description available. Electrical Engineering Information Systems Information Science
29	「輸送現象」之文獻特性分析 / Analysis of Transport Phenomenon Literature：A Bibliometric Approach 林怡甄, Lin, Yi Jen Unknown Date (has links) 本研究旨在應用書目計量學方法分析1900年至2007年間，輸送現象文獻之特性，藉以探討輸送現象之發展情形。研究樣本取自SCIE資料庫，計104854篇相關書目資料。期望本研究結果能提供輸送現象學界與圖書館或資料單位參考，協助其做有效之館藏規劃及期刊資訊服務。本研究結果歸納如下：(1)輸送現象文獻成長狀況目前呈穩定成長狀態，1965年後之文獻累積成長曲線符合指數成長。(2)輸送現象文獻之主要出版國為美國、英國、荷蘭、瑞士、德國、日本等國。台灣文獻出版量之排名則為第22名。(3)英文為輸送現象文獻最重要之寫作語文，德文、法文、俄文、日文依序於後。(4)輸送現象文獻之出版類型以期刊文章為主，佔總文獻之91.37%。(5)本研究不符合布萊德福定律，但符合布萊德福-齊夫定律曲線，求得之核心期刊有八種，分別為美國及英國所出版。(6)以高被引期刊、影響係數以及被資料庫收錄情況等方式，驗證布萊德福分區法所求之核心期刊品質，發現核心期刊品質值得信任。(7)以洛卡定律最小平方法求得n值為-2.5141(平等法)、-2.5389(第一作者法)，c值為0.7488(平等法)、0.7546(第一作者法)，進一步利用K-S檢定法加以檢定，證明洛卡定律並不適用於本研究。(8)本研究之作者生產力分佈不符合普萊斯平方根定律與80/20定律。(9)印度理工學院為輸送現象文獻重要的生產機構；台灣則為國立成功大學。總生產力台灣排名世界第22。(10)美國、法國、德國、日本、俄羅斯為相關研究機構最多的國家；英國、美國、荷蘭、瑞士則為最具吸收他國研究成果的學術傳播環境。本研究最後依據研究發現之結果，提出以下建議：(1)本研究之各項研究成果，可作為圖書資訊界館藏發展與管理之參考。(2)輸送現象產業界應加強對於研究的重視。(3)輸送現象相關研究人員，應具備英文、德文、法文、俄文等外語能力。(4)資料庫公司應提升書目資料精確性，以利研究。(5)定期對輸送現象文獻進行分析，有助於輸送現象相關研究人員瞭解該領域之研究發展。 / This study analyzed the characteristics of transport phenomenon literature during 1900-2007 by a bibliometric approach. A total of 104854 bibliographic data were retrieved from SCIE database. The results attempt to have a better understanding of the developments and trends on transport phenomenon reaserch. The results of the present study reveal that: (1) Transport Phenomenon literature increased steadily. The growth curve during 1965-2007 fits exponential growth. (2)USA, UK, Netherlands, Switzerland, Germany and Japan are the major countries of Transport Phenomenon publications. Taiwan ranked 22. (3)English is the most often used language. German ranked number two and the third most often used language is French. (4)Journal article is the major of publication and accounted for 91.37% of total publication. (5)The journal article distribution doesn't fit Bradford Law. However, it fits the typical Bradford-Zipf’s S-shaped curve. (6)Core journals are found to be associated with highly cited times and high impact factor. (7)For only counting first author, Lotka’s law is found to be inapplicable to author productivity distribution with n=-2.5389, c=0.7488. The K-S test also explored the invalidity of observed distribution at 0.01 level of significance. (8) Author productivity distribution also does’t fit Price Square Root Law and 80/20 Rule. (9) Indian Institute of Technology is the most important institute of Transport Phenomenon publications. In Taiwan, National Cheng Kung University published the most Transport Phenomenon literature and it ranked 22. (10)USA, French, Germany, Japan and Russia have the most relevant research institutions than other countries. 輸送現象書目計量學布萊德福定律布萊德福-齊夫定律洛卡定律普萊斯平方根定律 80/20定律 Transport Phenomenon Bibliometrics Bradford’s Law Bradford-Zipf’s Law Lotka’s Law Price Square Root Law 80/20 Rule
30	Temperaturbestimmung an IGBTs und Dioden unter hohen Stoßstrombelastungen / Temperature measurement of IGBTs and Diodes under high surge current loads Simon, Tom 03 June 2015 (has links) (PDF) Diese Arbeit beschäftigt sich mit drei verschiedenen Temperaturmessmethoden VCE, VGTH sowie über die Messung der thermsichen Impedanz mit 10ms langen Lastimpulsen und vergleicht die Messergebnisse mit zwei Simulatoren. Dabei wird ein Schaltungs- sowie ein Halbleitersimulator verwendet und das bisherige Simulationsmodell angepasst. Temperaturbestimmung IGBT GaAs SiC Si Diode Gatethreshold Kalibrierung VCE-Methode Wurzel(t)-Methode thermische Simulation Sentaurus Portunus thermsiche Impedanz Zth temperature measurement IGBT GaAs SiC Si Diode Gatethreshold calibration VCE-method square root(t)-method thermal simulation Sentaurus Portunus thermal impedance Zth ddc:600 Halbleiter Stoßstrom IGBT Diode

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