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Now showing items 141-150 of 256
Preprint
Ontology merging with formal concept analysis
(2005)
Ontologies have been established for knowledge sharing and are widely used as a means for conceptually structuring domains of interest. With the growing usage of ontologies, the problem of overlapping knowledge in a common domain becomes critical. In this short paper, we address two methods for merging ontologies based on Formal Concept Analysis: FCA-Merge and ONTEX. --- FCA-Merge is a method for merging ontologies following a bottom-up approach which offers a structural description of the merging process. The method ...
Dissertation
A Modeling Analysis of Changing Global Land Use as affected by Changing Demands for Wood Products
(2010-01-08)
The 21st century has brought new challenges for forest management at a time when globalization in world trade is increasing and global climate change is becoming increasingly apparent. In addition to various goods and services like food, feed, timber or biofuels being provided to humans, forest ecosystems are a large store of terrestrial carbon and account for a major part of the carbon exchange between the atmosphere and the land surface. Depending on the stage of the ecosystems and/or management regimes, forests ...
Technischer Report
Automatische Dienstvermittlung in dienstorientierten Architekturen
(2007-07-02)
Die Technologie dienstorientierter Architekturen (Service-oriented Architectures, kurz SOA) weckt große Visionen auf Seiten der Industrie wie auch der Forschung. Sie hat sich als derzeit
ideale Lösung für Umgebungen, in denen sich die Anforderungen an die IT-Bedürfnisse rapide ändern, erwiesen. Heutige IT-Systeme müssen Managementaufgaben wie Softwareinstallation, -anpassung oder -austausch erlauben, ohne dabei den laufenden Betrieb wesentlich zu stören. Die dafür nötige Flexibilität bieten dienstorientierte ...
Technischer Report
The Degree of Word-Expansion of Lexicalized RRWW-Automata
(2007-11-26)
Restarting automata can be seen as analytical variants of classical automata as well as of regulated rewriting systems. We study a measure for the degree of nondeterminism of (context-free) languages in terms of deterministic restarting automata that are (strongly) lexicalized. This measure is based on the number of auxiliary symbols (categories) used for recognizing a language as the projection of its characteristic language onto its input alphabet. This type of recognition is typical for analysis by reduction, a ...
Technischer Report
Observations on the Publicity and Usage of Parallel Programming Systems and Languages: A Survey Approach
(2007-05-08)
In this publication, we report on an online survey that was carried out among parallel programmers. More than 250 people worldwide have submitted answers to our questions, and their responses are analyzed here. Although not statistically sound, the data we provide give useful insights about which parallel programming systems and languages are known and in actual use. For instance, the collected data indicate that for our survey group MPI and (to a lesser extent) C are the most widely used parallel programming system ...
Dissertation
Implizite Positionierung unter Nutzung des Smartphone-Kompasses
(2019)
Der Ort, an dem ein Nutzer sich in einem Gebäude aufhält, spielt für technische Dienste wie Heimautomatisierung eine zentrale Rolle. In dieser Dissertation wird die Implizite Positionierung vorgestellt, ein neues Verfahren, das den Aufenthaltsort eines Nutzers mittels des Kompasses eines Smartphones erkennt, das der Nutzer bei sich trägt. Das Verfahren findet in den Kompassdaten Muster, die entstehen, wenn Nutzer durch Flure, Treppen, etc. oder um Ecken gehen. Da die Ausrichtungen dieser Orte die Nutzer in ihrer ...
Dissertation
Crowd-Based Entrepreneurship
(2020)
The aim of this dissertation is to explore the innovation potential of crowdsourcing for entrepreneurship. The main focus is to discover how crowd-based infrastructures (i. e., crowdsourcing platforms and crowdfunding platforms) can support entrepreneurs in their innovation activities and how this new paradigm can be used to generate value for customers as well as actors of entrepreneurial ecosystems. The results of the dissertation show that crowdsourcing offers numerous opportunities to support entrepreneurs in ...
Dissertation
MOCCAA - MObile Cloud Computing AdaptAble
(2019-08)
The primary objective of Mobile Cloud Computing (MCC) is the support of resource-constrained mobile devices by means of Cloud or nearby computing resources. In general, this is achieved by outsourcing or offloading computational intensive tasks of mobile applications. This allows, for instance, to virtually extend the processing power of mobile devices and, indirectly, to save battery life. In case remote resources are not available or the communication link is broken, still a local execution is possible.
The ...
Aufsatz
Trust
(2016-10)
Trust is the enabler of social interaction. Although the origins of research on trust traditionally lie outside the Information Systems (IS) domain, the importance of trust for IS research rapidly grew in the late 1990s, and it is still growing with the increasing ubiquity and advancement of technology in organizations, virtual teams, online markets, and user-technology interactions. Theoretically, the central role of trust is tied to the growing social change that Information and Communication Technology (ICT) has ...