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In the problem of testing the equality of k regression curves from independent samples we discuss three methods using nonparametric estimation techniques of the regression function. The first test is based on a linear combination of estimators for the integrated variance function in the individual samples and in the combined sample. The second approach transfers the classical one-way analysis of variance to the situation of comparing nonparametric curves, while the third test compares the differences between the estimates of the individual regression functions by means of an L2-distance. We prove asymptotic normality of all considered statistics under the null hypothesis local and fixed alternatives with different rates corresponding to the various cases. Additionally consistency of a wild bootstrap version of the tests is established....
Rezente technische Entwicklungen im Internet haben zur Genese neuer Formen des Kommunizierens geführt. Manche dieser Formen, darunter Weblogs, erreichten erst vor wenigen Jahren eine kritische Masse, die sie für linguistische Untersuchungen interessant macht. Eine den Medien zugewandte Diskursanalyse, die sich neuartigen Kommunikationsphänomenen wie Blogs widmet, ist erst im Entstehen begriffen, und theoretische wie methodologische Arbeiten auf dem Gebiet sind noch Mangelware. Die von Ron Scollon und Suzie Wong Scollon entwickelte Nexus Analysis ist jedoch in der Lage, ein adäquates Untersuchungsmodell für Blogs zu bieten. Als eine handlungstheoretisch fundierte und Diskursanalyse liefert sie die Grundlage für eine auf die Untersuchung von Blogs angepasste Methodologie. Die nötigen theoretischen und methodologischen Anpassungen des ...
Die vorliegende Arbeit befasst sich mit der Entwicklung einer hierarchischen Familie von Schalenmodellen und deren Diskretisierung basierend auf NURBS (Non-Uniform Rational B-Splines) Funktionen für die numerische Analyse von Schalenstrukturen. Als mechanisches Basismodell wird eine mittelflächenparametrisierte 3-Parameter-Formulierung mit Kirchhoff-Lovescher Schalenkinematik verwendet. Für das in dieser Arbeit entwickelte Schalenmodell mit Reissner-Mindlin-Kinematik, werden die Annahmen der Kirchhoff-Loveschen Schalenkinematik durch Einführen zusätzlicher, von den Verschiebungsableitungen unabhängigen Parametern erweitert. Für die Berücksichtigung der Dickenänderung der Schale wird in dieser Arbeit zudem ein 7-Parameter-Schalenmodell entwickelt, welches einer Erweiterung des Reissner-Mindlin-Modells mit fünf Parametern entspricht. D...
This NebFact discusses the many advantages to an oil analysis.
Machine learning techniques benefit science and industry primarily insofar as they enable data analysts to better understand their data, make valid conclusions, and gain insight into their domain of investigation. Studies in anthropocentric data analysis seek to understand how human judgment is applied in the data analysis process and to develop methods that provide explicit opportunities for human interaction and insight. We present three studies of human visual reasoning exploring the extent to which novice and expert subjects are able to judge the quality of and understand cluster analysis and dimensionality reduction stimuli. We then investigate whether humans are able to learn how cluster analysis algorithms function simply through interacting with them rapidly across diverse data sets. Finally we show how multicore processing on ...
[[abstract]]When performing aggressive optimizations and parallelization to exploit features of advanced architectures, optimizing and parallelizing compilers need to quantitatively assess the profitability of any transformations in order to achieve high performance. Useful optimizations and parallelization can be performed if it is known that certain points-to relationships would hold with high or low probabilities. For instance, if the probabilities are low, a compiler could transform programs to perform data speculation or partition iterations into threads in speculative multithreading, or it would avoid conducting code specialization. Consequently, it is essential for compilers to incorporate pointer analysis techniques that can estimate the possibility for every points-to relationship that it would hold during the execution. Howev...
Operational risk management and measurement has been paid an increasing attention in last years. The main two reasons are the Basel II requirements that were to be complied with by all international active financial institutions by the end of 2006 and recent severe operational risk loss events. This paper focuses on operational risk measurement techniques and on economic capital estimation methods. A data sample of operational losses provided by an anonymous Central European bank is analyzed using several approaches. Multiple statistical concepts such as the Loss Distribution Approach or the Extreme Value Theory are considered. One of the methods used for operational risk management is a scenario analysis. Under this method, custom plausible loss events defined in a particular scenario are merged with the original data sample and their...
The goal of program verification is to ensure software reliability by establishing a mathematical proof which guarantees that the software behaves correctly. Program analysis tools assist the developer in the verification process. Ideally a program analysis should be applicable to a wide range of verification problems without imposing a high burden on its users, i.e., without requiring deep mathematical knowledge and experience in program verification. A big step forward towards this ideal has been achieved by combining "abstract interpretation" with techniques for "automated reasoning". In abstract interpretation one transforms the "concrete program" into an "abstract program". The abstract program enables the analysis to statically collect information over all possible executions of the concrete program. This information is used to...
A Country Environmental Analysis (CEA) is a World Bank analytical tool used to integrate environmental issues into development assistance strategies, programs, and projects. To that end, the CEA synthesizes environmental issues, highlights the environmental and economic implications of development policies, and evaluates the country's environmental management capacity. It is composed of three analytical building blocks: the identification of environment-development priority issues, a general analysis of environmental institutions and governance, and detailed analyses of the priority issues or sectors identified in the first analytical building block. It then examines the findings of...
This book provides tools of analysis for discovering equity in tax burdens as well as in public spending and judging government performance in its role in safeguarding the interests of the poor and those otherwise disadvantaged members of society, such as women, children, and minorities. The book further provides a framework for a rights-based approach to citizen empowerment-in other words, creating an institutional design with appropriate rules, restraints, and incentives to make the public sector responsive and accountable to an average voter. Various chapters in this book provide tools of analysis for addressing the following test questions: public burden test; poverty reduction ...
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