Wir stellen die Resultate einer Untersuchung von Strom-Strom-Korrelatoren beruhend auf den Grundprinzipien der Quantenchromodynamik vor. Wir benutzen die nicht-perturbativen Methoden der sogenannten twisted mass Gitter-QCD mit dynamischem up- und down-Quark unter Ausnutzung der automatischen O(a)-Verbesserung. Als Anwendung diskutieren wir die Berechnung des hadronischen Beitrags zur Korrektur in führender Ordnung in der elektromagnetischen Kopplung zum anomalen magnetischen Moment des Myons. Dieses gilt als eine sehr geeignete Größe für die aktuelle Suche nach neuer Physik jenseits des Standardmodells, besonders im Hinblick auf die Diskrepanz zwischen der Vorhersage aus dem Standardmodell und dem experimentell gemessenen Wert. Innerhalb der theoretischen Bestimmung ist der hadronische Anteil führender Ordnung mit der größten Unsicherheit behaftet und genießt derzeit somit naturgemäß Priorität. Wir beschreiben unsere Studie aller systematischen Unsicherheiten der Gitterrechnung auf Grundlage von drei Gittervolumina, zwei Gitterabständen, Pionmassen im Bereich von 650 MeV bis 290 MeV und den Quark-unverbundenen Beiträgen. Für die Extrapolation zum physikalischen Punkt stellen wir eine neue Methode vor, welche die Abhängigkeit von der Pionmasse hinreichend abschwächt und eine lineare Extrapolation ermöglicht. Im Ergebnis bestimmen wir den Beitrag von up- und down-Quark zu a_mu^hlo(N_f=2) = 5.69 (15) 10^(-8). Die dargelegten Methoden werden auf das Elektron- und das Tau-Lepton erweitert mit dem Resultat a_el^hlo(N_f=2) = 1.512 (43) 10^(-12) bzw. a_tau^hlo(N_f=2) = 2.635 (54) 10^(-6). Wir schätzen den Beitrag des charm-Quarks zu a_mu^hlo in der Partially Quenched tmLQCD mit dem Resultat a_mu^hlo(charm) = 1.447 (24) (30) 10^(-9) in Übereinstimmung mit der Vorhersage über die Dispersionsrelation unter Hinzunahme experimenteller Daten für das hadronische R-Verhältnis. / We present an investigation of hadronic current-current correlators based on the first principles of Quantum Chromodynamics. Specifically we apply the non-perturbative methods of twisted mass lattice QCD with dynamical up and down quark taking advantage of its automatic O(a) improvement. As a special application we discuss the calculation of the hadronic leading order contribution to the muon anomalous magnetic moment. The latter is regarded as a promising quantity for the search for physics beyond the standard model. The origin of the strong interest in the muon anomaly lies in the persistent discrepancy between the standard model estimate and its experimental measurement. In the theoretical determination the hadronic leading order part is currently afflicted with the largest uncertainty and a dedicated lattice investigation of the former can be of strong impact on future estimates. We discuss our study of all systematic uncertainties in the lattice calculation, including three lattice volumes, two lattice spacings, pion masses from 650 MeV to 290 MeV and the quark-disconnected contribution. We present a new method for the extrapolation to the physical point that softens the pion mass dependence of a_mu^hlo and allows for a linear extrapolation with small statistical uncertainty at the physical point. We determine the contribution of up and down quark as a_mu^hlo(N_f=2) = 5.69 (15) 10^(-8). The methods used for the muon are extended to the electron and tau lepton and we find a_el^hlo(N_f=2) = 1.512 (43) 10^(-12) and a_tau^hlo(N_f=2) = 2.635 (54) 10^(-6). We estimate the charm contribution to a_mu^hlo in partially quenched tmLQCD with the result a_mu^hlo(charm) = 1.447 (24) (30) 10^(-9) in very good agreement with a dispersion-relation based result using experimental data for the hadronic R-ratio.

The aim of this work is to outline chosen methods to be applied in developing a business plan for ICT product / service. Work formulates a business plan, project management, theory of constraints (TOC) and Quality Function Deployment. The TOC is mainly devoted to the principles of causality and this principles is applied to the sales and marketing theoretically. The practical section is analyzing the product / service by using the method of Quality Function Deployment, focusing on the application of TOC instruments (clouds and trees) during the prepation of project realization. The last part is the business plan for a specific ICT service.

Tento projekt se věnuje problematice zobrazení velkých hierarchických struktur, zejména možnostem vizualizace stromových grafů. Cílem je implementace hyperbolického prohlížeče ve webovém prostředí, který využívá potenciálu neeukleidovské geometrie k promítnutí stromu na hyperbolickou rovinu. Velký důraz je kladen na uživatelsky přívětivou manipulaci se zobrazovaným modelem a snadnou orientaci.

In this thesis we discuss the issue of searching the best k objects from the multi-users point of view. Every user has his own preferences, which are represented by fuzzy functions and aggregation function. This thesis designs and implements several solutions of searching the best k objects when attributes data are stored on remote servers. It was necessary to modificate existing algorithms for this type of obtaining data. This thesis uses several variants of Fagin algorithm, indexing methods using B+ trees and communication via web services.

The pivot tables is one of the most effective metric access method optimized for a number of distance computations in similarity search. In this work the new modification of the pivot tables method was proposed that is besides distance computations optimized also for a number of I/O operations. Proposed Clustered pivot tables method is indexing clusters of similar objects that were created by another metric access method - the M-tree. The indexing of clustered objects has a positive effect for searching within indexed database. Whereas the clusters are paged in second memory, page containing such cluster, which do not satisfy particular query, is not accessed in second memory at all. Non-relevant objects, that are out of the query range, are not loaded into memory, what has the effect of decreasing number of I/O operations and total volume of transferred data. The correctness of proposed approach was experimentally proved and experimental results of proposed method was compared to selected metric access methods.

In this thesis we discuss the issue of searching the best k objects from the multi-users point of view. Every user has his own preferences, which are represented by fuzzy functions and aggregation function. This thesis designs and implements several solutions of searching the best k objects when attributes data are stored on remote servers. It was necessary to modificate existing algorithms for this type of obtaining data. This thesis uses several variants of Fagin algorithm, indexing methods using B+ trees and communication via web services.

SOFA 2 is a component system employing hierarchically composed components. It provides ADL-based design, behavior specification using behavior protocols, dynamic reconfiguration of the components, and modeling of the component communication by software connectors. This allows seamless and transparent distribution of component applications. The connectors can be automatically generated, SOFA 2 contains Java connector generator allowing to connect components with Java interfaces. The aim of this thesis is to implement C code generator and integrate it into the current SOFA 2 connector generator framework, so that C connectors can be automatically generated and thus components written in C language can be transparently connected in distributed environment. The proposed C code generator is based on the concept of template transformation, where templates containing mixture of C code and a scripting Domain Specific Language are transformed to a pure C code. Strategic term rewriting method provided by Stratego/XT framework is used for evaluation of the scripts within the templates.

In the present work we explore application of XML schema mapping in conceptual modeling of XML schemas. We expand upon the previous efforts to map XML schemas to PIM schema via a decision tree. In this thesis more versatile method is implemented - the decision tree is trained from a large set of user- annotated mapping decision samples. Several variations of training that could improve the mapping results are proposed. The approach is evaluated in a wide range of experiments that show the advantages and disadvantages of the proposed variations of training. The work also contains a survey of different approaches to schema mapping and description of schema used in this work. Powered by TCPDF (www.tcpdf.org)

Wir betrachten die Einsatzplanung (Unit Commitment Problem) für ein thermisches Kraftwerk mit zusätzlicher Energienebenbedingung. Dazu definieren wir ein stochastisches dynamisches Programm (SDP)mit stetigem Zustandsraum und integriertem gemischt-ganzzahligem Programm (MIP). Wir stellen einen effizienten Algorithmus vor zur Lösung des MIP über eine Matrixmultiplikation und verwenden eine Hauptkomponentenanalyse zur Reduzierung der Dimension des Preisvektors. Außerdem liefern wir zum Vergleich des SDP eine vereinfachte Regel zur Energieallokation. Zur Beurteilung der Güte der Ergbnisse betrachten wir als nächstes obere Grenzen. Für eine vereinfachte Modellierung des Kraftwerks als Swing Option mit Mehrfachausübung auf derselben Stufe bestimmen wir formal eine solche obere Grenze. Abschließend untersuchen wir Strategien zur Vermeidung des Spotpreisrisikos, dem das Kraftwerk aufgrund der Nichtspeicherbarkeit von Strom besonders ausgesetzt ist. Zunächst konzentrieren wir uns auf die Messung des Spotpreisrisikos und stellen drei neue Maße vor (Forward Delta, Synthetisches Spot Delta und Earnings-at-Risk). Danach präsentieren wir Strategien zur Risikoreduzierung vor und während der Lieferperiode. Im zweiten Fall wird versucht, durch einen neuen Produktionsplan das Risiko mehr als den Gewinn zu senken. Wir schlagen dazu einen Referenzwert vor, den wir EaR-effizienten Optionswert nennen und in eine neue Erzeugungspolitik basierend auf Quantil-Regression einfließt. Die Politik beschreibt ein Preisband innerhalb dessen ein beobachteter Preis zur Ausübung eines Swing-Rechts führt. Für den Fall der amerikanischen Option können wir EaR-Effizienz mit dieser Strategie nachweisen. Abschließend betrachten wir die Absicherung des Kraftwerks vor der Lieferung durch gezielten Verkauf einer Swing Option. Wir stellen eine Heuristik basierend auf unserem synthetischen Spot Delta vor, um Swinghöhe und –anzahl effizient zu finden. / We define a new not yet investigated unit commitment problem that introduces an energy constraint to a thermal power plant. We define a stochastic dynamic program with continuous state space and nested mixed integer program (MIP). We introduce a fast implementation approach by replacing the MIP with an efficient matrix calculation and use principal component analysis to reduce the dimension of the price vector. We also provide a fast heuristic valuation approach for comparison. We investigate the theory of upper bounds for a proper validation of our power plant results. In particular we provide an extension for swing options with multiple exercises at the same stage. Finally we provide a risk analysis for our thermal power plant. In particular we investigate strategies to reduce the spot price risk to which power plants are significantly exposed. First, we focus on the measurement of spot price risk and propose three appropriate risk figures (Forward delta, synthetic spot delta and Earnings-at-Risk ). Second we suggest risk mitigation strategies for both periods, before and in delivery. The latter tries to alter the dispatch policy i.e. pick less risky hours and accept a (desirably only slightly) smaller return. We introduce a benchmark that we will call EaR-efficient option value. We propose a mitigation strategy for this benchmark that is based on quantile regression. It defines a price interval for executing an individual swing right and is therefore very well suited for real world applications. In case of an American option we are able to show EaR-efficiency of our strategy. Finally, we investigate hedging strategies before delivery. In particular, we look at a hedge for the spot price risk of the power plant using a swing option. We propose a heuristic based on our synthetic spot deltas to find the swing number and size of the swing option for a given upper generation amount.

The thesis deals with a computer modelling by means of the commercial software COMSOL Multiphysics. The thesis is structured into three topical sections. The first part is dedicated to the programme characteristics and its development. In the second part the brief characteristics of working with the programme COMSOL Multiphysics is presented which should make the user´s first steps in working with software easier. The last part of thesis shows the specific demonstration of the created multiple physics task taken from the field of plasma physics. This task is solved by means of continuous simulation of a computer modelling based on the drift-diffusion approximation of low temperature plasma. The proposal of the paper for the proceedings of the conference ,,Technical Computing Prague 2012" is also a part of this thesis.