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Business processes and information systems evolve constantly and affect each other in non-trivial ways. Aligning security requirements between both is a challenging task. This work presents an automated approach to extract access control requirements from business processes with the purpose of transforming them into a) access permissions for role-based access control and b) architectural data flow constraints to identify violations of access control in enterprise application architectures.
Umfang: XXII, 329 S.
Preis: 47.00 €
Buchdetails
Software vendors must consider confidentiality especially while creating software architectures because decisions made here are hard to change later. Our approach represents and analyzes data flows in software architectures. Systems specify data flows and confidentiality requirements specify limitations of data flows. Software architects use detected violations of these limitations to improve the system. We demonstrate how to integrate our approach into existing development processes.
Umfang: XIII, 382 S.
Preis: 49.00 €
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Developing variable systems faces many challenges. Dependencies between interrelated artifacts within a product variant, such as code or diagrams, across product variants and across their revisions quickly lead to inconsistencies during evolution. This work provides a unification of common concepts and operations for variability management, identifies variability-related inconsistencies and presents an approach for view-based consistency preservation of variable systems.
Umfang: XIX, 272 S.
Preis: 47.00 €
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In dieser Arbeit wird ein Ansatz zur adaptiven Umweltmodellierung betrachtet. Umweltmodelle für kognitive Systeme enthalten oft vorab definierte Domänenmodelle, die für unvorhergesehene Entitäten unzureichend sein können. Der vorgestellte Ansatz adressiert eine adaptive Erweiterung solcher Modelle unter Beachtung der Relevanz von Modellanpassungen. Grundlage ist eine quantitative Modellbewertung, die die Repräsentationsfähigkeit des Modells bezüglich des beobachteten Umgebungszustands bewertet.
In this work, an approach for adaptive world modeling is proposed. World models for cognitive systems often employ predefined domain models, which may become insufficient when encountering unforeseen entities. The presented approach addresses an adaptive extension of such domain models, considering the relevance of proposed model adaptations. As a basis, a quantitative model evaluation is devised, rating the ability of a domain model to represent the currently observed environment state.
Umfang: XIV, 406 S.
Preis: 53.00 €
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Mathematical optimization techniques are among the most successful tools for controlling technical systems optimally with feasibility guarantees. Yet, they are often centralized—all data has to be collected in one central and computationally powerful entity. Methods from distributed optimization overcome this limitation. Classical approaches, however, are often not applicable due to non-convexities. This work develops one of the first frameworks for distributed non-convex optimization.
Umfang: XIII, 202 S.
Preis: 43.00 €
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Automatisierte Abwehr- und Präventionsmaßnahmen zum Schutz industrieller Systeme gefährden oft deren Echtzeitverarbeitung, Ausfallsicherheit und Redundanz. Daher müssen sie so wenig invasiv wie möglich durchgeführt werden. Dennoch sind gerade die minimalinvasive Sicherheitsanalyse und Vorfallreaktion noch wenig erforscht. In dieser Arbeit werden auf neuen semantischen- und SDN-basierten Ansätzen beruhende Lösungen für einige der wichtigsten Probleme in diesen Bereichen vorgestellt.
Automated defense and prevention measures designed to protect industrial automation and control systems often compromise their real-time processing, resilience and redundancy. Therefore, they need to be performed as non-invasively as possible. Nevertheless, particularly minimally invasive security analysis and incident response are still poorly researched. This work presents solutions based on new semantic- and SDN-based approaches to some of the most important problems in these areas.
Umfang: XVIII, 351 S.
Preis: 53.00 €
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Intuitive Interaktionstechniken sind essentiell für mobile Augmented-Reality-Systeme. Für die implizite Interaktion stellt diese Arbeit Verfahren zur automatischen Blickbewegungsanalyse und zur Visualisierung von Blickbewegungen vor. Im Kontext der expliziten Interaktion wird eine Fusion von optischem Fluss, Segmentierung von Hautfarbe und einem Handposenschätzer zusammen mit einem Trackingverfahren zur Lokalisierung und Posenschätzung einer Hand in monokularen Farbbildern präsentiert.
Intuitive interaction techniques are essential for mobile augmented reality systems. For implicit interaction, this work presents techniques for automatic eye movement analysis and visualization. In the context of explicit interaction, a fusion of optical flow, skin color segmentation, and a hand pose estimator is presented along with a tracking method for localization and pose estimation of a hand in monocular color images.
Umfang: X, 200 S.
Preis: 45.00 €
Buchdetails
Die modellbasierte Performancevorhersage ist ein bekanntes Konzept zur Gewährleistung der Softwarequalität. Derzeitige Ansätze basieren auf einem Modell mit einer Metrik, was zu ungenauen Vorhersagen für moderne Architekturen führt.
In dieser Arbeit wird ein Multi-Strategie-Ansatz zur Erweiterung von Performancevorhersagemodellen zur Unterstützung von Multicore-Architekturen vorgestellt, in Palladio implementiert und dadurch die Genauigkeit der Vorhersage deutlich verbessert.
Model-based performance prediction is a well-known concept to ensure the quality of software.
This thesis presents a multi-strategies approach to extend performance prediction models to support multicore architectures.We implemented the strategies into Palladio and significantly increased the performance prediction power.
Umfang: XIII, 368 S.
Preis: 54.00 €
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This work proposes a probabilistic extension to Bézier curves as a basis for effectively modeling stochastic processes with a bounded index set. The proposed stochastic process model is based on Mixture Density Networks and Bézier curves with Gaussian random variables as control points. A key advantage of this model is given by the ability to generate multi-mode predictions in a single inference step, thus avoiding the need for Monte Carlo simulation.
Umfang: XII, 194 S.
Preis: 44.00 €
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2021, the annual joint workshop of the Fraunhofer IOSB and KIT IES was hosted at the IOSB in Karlsruhe. For a week from the 2nd to the 6th July the doctoral students extensive reports on the status of their research. The results and ideas presented at the workshop are collected in this book in the form of detailed technical reports.
Umfang: IV, 221 S.
Preis: 43.00 €
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