karlsruher institut für technologie karlsruher institut für technologie sep 2014 (143 résultats)

Taschenbuch. Etat : Neu. Neuware -Interactions between people are ubiquitous. When people make phone calls, transfer money, connect on social network sites, or visit each other, these actions can be collected as dyadic, directed, relational events. Each of those events can be understood as driven by multiple individual decisions that at least partially involve rational considerations. This book aims at developing models that allow to understand individual event decisions in the context of large social networks.Books on Demand GmbH, Überseering 33, 22297 Hamburg 150 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Origamis are translation surfaces obtained by gluing finitely many unit squares and provide an easy access to Teichmüller curves. In particular, their monodromy represenation can be explicitely determined. A general principle for the decomposition of this represenation is exhibited and applied to examples. Closely connected to it is a dynamical cocycle on the Teichmüller curve. It is shown that its Lyapunov exponents, otherwise inaccessible, can be computed for a subrepresentation of rank two.Books on Demand GmbH, Überseering 33, 22297 Hamburg 150 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Throughput in manual order picking systems with narrow aisles suffers from congestion as pickers cannot pass each other. Only few models incorporate congestion but they have very strict assumptions. In this work, queueing theory is used to analyze systems with traversal routing as well as different storage policies. The models are able to estimate throughput for many alternative designs in a relatively short amount of time. New guidelines for narrow-aisle order picking systems are introduced.Books on Demand GmbH, Überseering 33, 22297 Hamburg 266 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -A translation surface is obtained by taking plane polygons and gluing their edges by translations. We ask which subgroups of the Veech group of a primitive translation surface can be realised via a translation covering. For many primitive surfaces we prove that partition stabilising congruence subgroups are the Veech group of a covering surface. We also address the coverings via their monodromy groups and present examples of cyclic coverings in short orbits, i.e. with large Veech groups.Books on Demand GmbH, Überseering 33, 22297 Hamburg 150 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Bioluminescence tomography is a recent biomedical imaging technique which allows to study molecular and cellular activities in vivo. From a mathematical point of view, it is an ill-posed inverse source problem: the location and the intensity of a photon source inside an organism have to be determined, given the photon count on the organism's surface. To face the ill-posedness of this problem, a geometric regularization approach is introduced, analyzed and numerically verified in this book.Books on Demand GmbH, Überseering 33, 22297 Hamburg 196 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -In this work we present a system to fully automatically create a highly accurate visual feature map from image data aquired from within a moving vehicle. Moreover, a system for high precision self localization is presented. Furthermore, we present a method to automatically learn a visual descriptor. The map relative self localization is centimeter accurate and allows autonomous driving.Books on Demand GmbH, Überseering 33, 22297 Hamburg 142 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -This work develops highly efficient algorithms for analyzing large images. Applications include object-based change detection and screening. The algorithms are 10-100 times as fast as existing software, sometimes even outperforming FGPA/GPU hardware, because they are designed to suit the computer architecture. This thesis describes the implementation details and the underlying algorithm engineering methodology, so that both may also be applied to other applications.Books on Demand GmbH, Überseering 33, 22297 Hamburg 224 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Kanban is a representative control policy pursuing cost-efficient features for the material flow system. However, the Kanban mechanism increases the system vulnerability especially when the environment is uncertain. Therefore, we proposed a robust Kanban system model for the supply chain system based on the Kanban mechanism. The model can use robust approaches from strategic, tactical, and operational levels to deal with the risks in an uncertain environment.Books on Demand GmbH, Überseering 33, 22297 Hamburg 274 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Doppler radars provide unique 3D information about precipitating clouds in high spatial and temporal resolutions. However, the observed quantities (reflectivity, Doppler velocity and polarization properties) are not directly comparable to the variables of numerical prediction models. In order to enable radar data assimilation, a comprehensive modular radar forward operator has been developed.Books on Demand GmbH, Überseering 33, 22297 Hamburg 254 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -This work introduces novel techniques for the fabrication of bio-inspired hierarchical micro- and nanostructures. The enormous potential of these techniques is demonstrated by presenting a synthetic gecko-like adhesive matching the adhesion and self-cleaning of geckos very closely and a nanofur which is superhydrophobic, superoleophilic, underwater air-retaining, and even self-healing when surface treated.Books on Demand GmbH, Überseering 33, 22297 Hamburg 206 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -The software execution environment can play a crucial role when analyzing the performance of a software system. In this book, a novel approach for the automated detection of performance-relevant properties of the execution environment is presented. The properties are detected using predefined experiments and integrated into performance prediction tools. The approach is applied to experiments for detecting different CPU, OS, and virtualization properties, and validated in different case studies.Books on Demand GmbH, Überseering 33, 22297 Hamburg 344 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -The development of efficient air freight networks is an upcoming challenge. The present book approaches this problem for cargo airlines by characterising and classifying their network structures and by developing a model for an airline's strategic network design. The book provides results which are of value for airline professionals (network efficiency analysis), policy makers (policy impact assessment) and researchers (cargo airline network design model).Books on Demand GmbH, Überseering 33, 22297 Hamburg 180 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Today's globalised society highly depends on reliable infrastructure systems like transportation and telecommunication. This doctoral dissertation presents a methodology to identify critical road infrastructures. Critical road sections are those whose failure would entail large costs to society. The dissertation also accounts for aspects like multiple road disruptions and probabilities of failure. Baden-Wuerttemberg in Germany serves as a case study area. 162 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -The aging society and threatening old-age poverty are two major political topics in Germany for the next decades. Many modern employment biographies consist of atypical employment and discontinuities; both negatively impact the pension entitlements of the individuals. This dissertation develops an inninnovative approach that offers flexibility to absorb demographic changes as well as labor market developments, without threatening the financial stability of the public pension scheme.Books on Demand GmbH, Überseering 33, 22297 Hamburg 160 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -This book reviews and investigates orbit-related effects in synthetic aperture Radar interferometry (InSAR). The translation of orbit inaccuracies to error signals in the interferometric phase is concisely described; estimation and correction approaches are discussed and evaluated with special focus on network adjustment of redundantly estimated baseline errors. Moreover, the effect of relative motion of the orbit reference frame is addressed.Books on Demand GmbH, Überseering 33, 22297 Hamburg 160 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -In this book, nonlinear silicon-organic hybrid waveguides and quantum dot semiconductor optical amplifiers are investigated. Advantageous applications are identified, and corresponding proof-of-principle experiments are performed. Highly nonlinear silicon-organic hybrid waveguides show potential for all-optical signal processing based on fourwave mixing and cross-phase modulation. Quantum dot semiconductor optical amplifiers operate as linear amplifiers with a very large dynamic range.Books on Demand GmbH, Überseering 33, 22297 Hamburg 288 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Polymer solar cells can be produced by a continuous low cost coating and drying process. This work details a specialized experimental set-up to enable large scale roll to roll processing. Material properties such as surface energy, surface tension, and viscosity are presented and modelled. The impact of coating method, as well as process parameters (e.g. coating speed, shear rate, solvent composition) on process stability and film properties, is discussed.Books on Demand GmbH, Überseering 33, 22297 Hamburg 238 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -There is growing evidence for possible associations between physical exercise, fitness and cognitive performance in elderly, but research in young adults is lacking. The aim of this cross-sectional study was to investigate the interdependence between physical (in-) activity, fitness, and cognition in young adults. The methods included a number of physical performance tests, a physical activity questionnaire, and a test battery to measure executive functions and event-related brain potentials.Books on Demand GmbH, Überseering 33, 22297 Hamburg 292 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -The performance of software components depends on several factors, including the execution platform on which the software components run. To simplify cross-platform performance prediction in relocation and sizing scenarios, a novel approach is introduced in this thesis which separates the application performance profile from the platform performance profile. The approach is evaluated using transparent instrumentation of Java applications and with automated benchmarks for Java Virtual Machines.Books on Demand GmbH, Überseering 33, 22297 Hamburg 440 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -In Global Navigation Satellite Systems (GNSS), the on-board clocks are a key component from which timing and navigation signals are generated. This thesis reviews the performance of the first Passive Hydrogen Maser (PHM) launched by the Galileo system in 2008; and demonstrates how the new PHM can be consider as the best clock in space, pushing the physical clock error contribution below the noise floor of geodetic time transfer capabilities. Furthermore, overall GNSS clock peformance is reviewedBooks on Demand GmbH, Überseering 33, 22297 Hamburg 230 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Process measurement deals with the quantification of business process models using process model metrics. This book presents a theoretical framework for the prediction of external process model attributes (as, for example, error-proneness and understandabiltiy) based on internal (structural) attributes. The properties of proposed metrics are analyzed. A visualization technique for metric values is introduced and metrics for process model understandability and granularity are evaluated.Books on Demand GmbH, Überseering 33, 22297 Hamburg 258 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -In this book, a new procedure to analyze lithium-ion cells is introduced. The cells are disassembled to analyze their components in experimental cell housings. Then, Electrochemical Impedance Spectroscopy, time domain measurements and the Distribution function of Relaxation Times are applied to obtain a deep understanding of the relevant loss processes. This procedure yields a notable surplus of information about the electrode contributions to the overall internal resistance of the cell.Books on Demand GmbH, Überseering 33, 22297 Hamburg 234 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -The Social Cloud framework leverages existing relationships between members of a social network for the exchange of resources. This thesis focuses on the design of coordination mechanisms to address two challenges in this scenario. In the first part, user participation incentives are studied. In the second part, heuristics for two-sided matching-based resource allocation are designed and evaluated.Books on Demand GmbH, Überseering 33, 22297 Hamburg 310 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Hysteretic loss optimisations through numerical simulation and subsequent experimental confirmation in transport current and background field measurements: ferromagnetic shielding and topological geometry optimisation is used to reduce energy dissipation in HTS coated conductor geometries. Single tapes and coil geometries are investigated. A 3D model capable of taking into account contact resistances is also presented for the Twisted Stacked Tape Conductor cable.Books on Demand GmbH, Überseering 33, 22297 Hamburg 246 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware -Führen als eine Kunst zu begreifen, diesem Anliegen gehen die Beiträge des von Götz W. Werner und Peter Dellbrügger herausgegebenen Sammelbands nach. Ein Schwerpunkt liegt dabei auf dem Thema der Freiheit: Stefan Brotbeck entwirft eine Phänomenologie der Unfreiheit, indem er soziale Mechanismen entlarvt, die uns und anderen das Leben schwer machen. Weiterhin geht es u.a. um die 'Befreiung' der Führung (Rehn), Hierarchie (Hardorp), Vertrauen (Lavecchia), Bildung (Dietz) und Sinnstiftung (Werner).Books on Demand GmbH, Überseering 33, 22297 Hamburg 112 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Das Buch behandelt kompakt und übersichtlich das Themengebiet der mobilen Arbeitsmaschinen. Im ersten Teil werden die Grundlagen der Maschinen behandelt. Es wird dabei systematisch der Aufbau der Maschinen erläutert und die in den Maschinen eingesetzten Technologien beschrieben. Beginnend von der Energiequelle wird der Energiefluss in den Maschinen bis zu den Abtrieben verfolgt. Im zweiten Teil werden ausgewählte mobile Arbeitsmaschine aus den unterschiedlichen Bereichen vorgestellt.Books on Demand GmbH, Überseering 33, 22297 Hamburg 224 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Die zum Thema 'Demokratische Hochschule' durchgeführte Tagung der Hans-Böckler-Stiftung in Zusammenarbeit mit dem Personalrat des KIT setzte sich das Ziel, die Zusammenhänge zwischen Autonomie, staatlicher Verantwortung, Demokratie und Arbeitsbedingungen einer Wissenschaftseinrichtung, insbesondere am Beispiel KIT, herauszuarbeiten. Mit dem vorliegenden Tagungsbericht hoffen die Veranstalter dem Ziel einer demokratischen und sozialen Wissenschaftseinrichtung einen Schritt näher gekommen zu sein.Books on Demand GmbH, Überseering 33, 22297 Hamburg 180 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Im Tagungsband zum 10. Symposium Baustoffe und Bauwerkserhaltung wird von namhaften Autoren ein historischer Überblick über den Werkstoff Beton gegeben und das Zusammenwirken von Architektur und Konstruktion erläutert. Anschließend wird aufgezeigt, wie die Frischbetoneigenschaften gezielt beeinflusst werden können, welche Möglichkeiten Textilbeton besitzt und welches gestalterische Potential Betonfertigteile aufweisen. Abschließend wird auf herausragende Gestaltungsbeispiele eingegangen.Books on Demand GmbH, Überseering 33, 22297 Hamburg 100 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Die Voraussetzungen für Schulbildung von Mädchen im ländlichen Westafrika werden hinsichtlich Sozialstatus von Frauen und Investitionsverhalten einer Subsistenzgesellschaft basierend auf qualitativen und quantitativen Daten analysiert und an einem konkreten Beispiel beleuchtet. = Basées sur des données qualitatives et quantitatives, les conditions de scolarisation des filles en Afrique de l'ouest rural sont analysées par rapport au statut social des femmes et au comportement d'investissement d'une société de subsistance et illustrées par un exemple concret.Books on Demand GmbH, Überseering 33, 22297 Hamburg 120 pp. Deutsch.

Taschenbuch. Etat : Neu. Neuware -Die Auswertung von Luft- und Satellitenbildern erfordert ein hohes Maß an Erfahrung und Expertenwissen und wird daher durch professionelle Bildauswerter durchgeführt. Rein automatische Verfahren bis heute häufig keine vergleichbaren Ergebnisse liefern, jedoch können sie den manuellen Auswerteprozess unterstützen. Diese Arbeit zeigt, wie die Vorteile von manueller und automatischer Auswertung in einem interaktiven Bildanalysesystem geeignet kombiniert werden können.Books on Demand GmbH, Überseering 33, 22297 Hamburg 172 pp. Deutsch.