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Zusammenfassung: Während auf Seiten der Supply-IT in den vergangenen Jahren eine zunehmende Professionalisierung und Industrialisierung stattgefunden hat, wurde die Rolle der Demand-seitigen IT bei der innerbetrieblichen Gestaltung von IT-Organisationen häufig vernachlässigt. Ziel dieser Arbeit ist, zunächst den Aufgabenbereich der Demand-IT abzugrenzen und(More)
The commercial structure of the Internet is changing. Content delivery networks (CDN) are becoming potent players in the bandwidth market and are responsible for an ever growing fraction of total Internet traffic. Carriers on the other hand are looking for strategies to escape the “dumb pipe” scenario and are increasingly seeing added value(More)
The aims of this study were to: (i) obtain temperature measurements during in vitro polymerisation of polymethylmethacrylate (PMMA) disks of a range of thicknesses; and (ii) obtain tissue temperature measurements at various locations within a skull defect during a simulated PMMA cranioplasty procedure using a cadaver. In vitro, higher temperatures were(More)
The objective of this thesis is to determine the value of software developers for the mobile value chain. To identify different strategies for mobile platforms integrating developers, two case studies are conducted: Apple and Google. Porter's approach of key activities is used to identify, how the two companies create a sustainable competitive advantage and(More)
Intraoperative fabrication of acrylic cranial implants may be difficult and will increase operation time. In addition forming implants directly on the defect, intracranial tissues are exposed to heat of polymerization and residual monomer, that occurs, when autopolymerizing methyl methacrylate is used intraoperatively. Furthermore the cosmetical result may(More)
The study started in September 1999 and ended in April 2002. It is based on a questionnaire [www.phidias.org] assessing case-related questions due to the application of stereolithographic models. Each questionnaire contains over 50 items. These variables take into account diagnosis, indications and benefits of stereolithographic models with view on(More)
This paper conceptualizes IT service management (ITSM) capability, a key competence of today's IT provider organizations, and presents a survey instrument to facilitate the measurement of an ITSM capability for research and practice. Based on the review of four existing ITSM maturity models (CMMI-SVC, COBIT 4.1, SPICE, ITIL v3), we first develop a(More)
Die technologiegetriebene Konvergenz der Branchen Informations-technologie, Telekommunikation und Medien hat die Entwicklung von Wertschöpfungsstrukturen und Geschäftsmodellen zur Produktion von ICT-Dienstleistungen stark beeinflusst. Ehemals vertikal integrierte Telekommunikationsnetzbetreiber sind nun als Zulieferer anderer ICT-Dienstleister mit der(More)