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Configurable Software Performance Completions through Higher-Order Model Transformations

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Book Series: The Karlsruhe Series on Software Design and Quality / Ed. by Prof. Dr. Ralf Reussner ISSN: 18670067 ISBN: 9783866449909 Year: Volume: 8 Pages: XII, 447 p. DOI: 10.5445/KSP/1000033385 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:02
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Chillies is a novel approach for variable model transformations closing the gap between abstract architecture models, used for performance prediction, and required low-level details. We enable variability of transformations using chain of generators based on the Higher-Order Transformation (HOT). HOTs target different goals, such as template instantiation or transformation composition. In addition, we discuss state-dependent behavior in prediction models and quality of model transformations.

Modellunterstützte Beurteilung der Verkehrsqualität auf Netzabschnitten von Bundesautobahnen

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Book Series: Schriftenreihe des Instituts für Verkehrswesen, Karlsruher Institut für Technologie ISSN: 03415503 ISBN: 9783731508687 Year: Volume: 73 Pages: XVII, 173 p. DOI: 10.5445/KSP/1000087900 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:01:58
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An efficient highway capacity design is becoming an increasingly important topic, thanks to recurring congestions and unreliable travel times in the German highway network. This work provides a new methodology for the analysis of oversaturated freeway facilities. A Cell Transmission Model was used as an underlying traffic flow model for modeling oversaturated freeway facilities and tailor-fitted to represent the HBS manual faithfully.

Mediale Hochschul-Perspektiven 2020 in Baden-Württemberg : empirische Untersuchung im Rahmen der Allianz ""Forward IT""

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ISBN: 9783731506232 Year: Pages: 124 p. DOI: 10.5445/KSP/1000064688 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Education
Added to DOAB on : 2019-07-30 19:59:17
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The study explores digitization in higher education from the organizational perspective of a university as a “model”, illustrated through specific case studies of the Karlsruhe Institute of Technology and the University of Stuttgart. It is assumed that the key factors affecting digitization in higher education are the widespread adoption and usage of digital technology in science, the digital interconnectedness of higher education systems and the media usage habits of instructors and students.

On the Use of Model Order Reduction Techniques for the Elastohydrodynamic Contact Problem

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Book Series: Schriftenreihe des Instituts für Technische Mechanik, Karlsruher Institut für Technologie ISSN: 16143914 ISBN: 9783731503699 Year: Volume: 27 Pages: XXXII, 125 p. DOI: 10.5445/KSP/1000046871 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
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The objective of this work is to develop a method which solves the nonlinear elastohydrodynamic contact problem in a fast and precise way using model order reduction techniques. The reduction procedure is based on a projection onto a low-dimensional subspace using different hyper-reduction procedures. The method provides fast and highly accurate reduced order models for stationary and transient, Newtonian and Non-Newtonian EHD line and point contact problems.

An Access Definition and Query Language : Towards a Unified Access Control Model

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ISBN: 9783731500889 Year: Pages: IX, 216 p. DOI: 10.5445/KSP/1000036121 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:59
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In this work we suggest a meta access control model emulating established access control models by configuration and offering enhanced features like the delegation of rights, ego-centered roles, and decentralized administration. The suggested meta access control model is named ''Access Definition and Query Language'' (ADQL). ADQL is represented by a formal, context-free grammar allowing to express the targeted access control model, policies, facts, and access queries as a formal language.

Zur Vorhersage des Schwindens und Kriechens von normal- und hochfestem Konstruktionsleichtbeton mit Blähtongesteinskörnung

Author:
Book Series: Karlsruher Reihe Massivbau, Baustofftechnologie, Materialprüfung / Institut für Massivbau und Baustofftechnologie ; Materialprüfungs- und Forschungsanstalt Karlsruhe ISSN: 1869912X ISBN: 9783731505211 Year: Volume: 80 Pages: Getr. Zählung DOI: 10.5445/KSP/1000054333 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:02:00
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While the present state of knowledge on the time dependent deformation behaviour of normal and high-strength concrete may be considered as sufficiently determined, the creep and shrinkage of lightweight aggregate (LWA) concrete, particularly of high-strength LWA concrete, can only be specified inadequately. On the basis of the experimental results a prediction model for shrinkage and creep of structural lightweight aggregate concrete was developed.

Verfahren zur Prädiktion des Rollwiderstands bei variablen Betriebsparametern auf Basis standardisierter Rollwiderstandsmessungen

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731508984 Year: Volume: 71 Pages: XIV, 194 p. DOI: 10.5445/KSP/1000091012 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
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As a contribution to environmental protection, the EU tyre label was introduced. However, the best label value does not necessarily imply the lowest rolling resistance under real operating conditions. This research work aims to develop a model to predict the rolling losses of car tyres based on standardized rolling resistance measurements. Using this model, the rolling resistance at variable operating parameters will be predicted.

Specification Languages for Preserving Consistency between Models of Different Languages

Author:
Book Series: The Karlsruhe Series on Software Design and Quality / Ed. by Prof. Dr. Ralf Reussner ISSN: 18670067 ISBN: 9783731507840 Year: Volume: 24 Pages: XX, 440 p. DOI: 10.5445/KSP/1000081446 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
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When complex IT systems are being developed, the usage of several programming and modelling languages can lead to inconsistencies that yield faulty designs and implementations. To address this problem, this work contributes a classification of consistency preservation challenges and an approach for preserving consistency. It is formalized using set theory and monitors changes to avoid matching and diffing problems. Three new languages that follow this preservation approach are presented.

Modellbasierte Identifikation fraktionaler Systeme und ihre Anwendung auf die Lithium-Ionen-Zelle

Author:
Book Series: Karlsruher Beiträge zur Regelungs- und Steuerungstechnik / Karlsruher Institut für Technologie, Institut für Regelungs- und Steuerungssysteme ISSN: 25116312 ISBN: 9783731506904 Year: Volume: 3 Pages: XXXIV, 210 p. DOI: 10.5445/KSP/1000071542 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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In this work, model-based methods for the online identification of physically motivated aging parameters of battery cells are presented and applied to lithium-ion-cells. The new methods are based on fractional impedance models and, in contrast to the state of the art, are late-lumping approaches. A further contribution of this work is the extension of the theory of time-variant fractional systems by a controllability analysis and an energy-optimized control.

Modellbasierte Entwicklung funktional sicherer Hardware nach ISO 26262

Author:
Book Series: Steinbuch Series on Advances in Information Technology / Karlsruher Institut für Technologie, Institut für Technik der Informationsverarbeitung ISSN: 21914737 ISBN: 9783731504429 Year: Volume: 10 Pages: VI, 291 p. DOI: 10.5445/KSP/1000049863 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:57
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The compliance with functional safety according to the standard ISO 26262 in context of the increasing electrification of road vehicles is a significant challenge. This work provides a concept and methodology for the model-based development of functional safe hardware. This is characterized by the description of hardware designs, annotation of failure data and performing the demanded safety evaluations.

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