Prozessorientierte Wirtschaftlichkeitsuntersuchung für E-Government

E-Government economy needs to be dealt with in a multidimensional and multiperspective way. Existing evaluation concepts, though, hardly meet these pre-requisites. In this paper we give an overview of approaches and difficulties in evaluating IT-projects in public administration. Current E-Government evaluation approaches and surveys are compared as to their fitness to judge on an actual E-Government project. Based on the E-Government evaluation criteria used for the assessment of the evaluation approaches we develop a process-oriented E-Government evaluation concept which is illustrated in a mini-case.     

Eine Dienstgüte unterstützende Webservice-Architektur für flexible Geschäftsprozesse

Web services as a technology to enable distributed business processes gain in importance. However, the support of Quality of Service (QoS) is crucial in this context. Thus, we present an integrated web service architecture with comprehensive QoS support. The architecture we introduce in this paper supports the assessment of web services to assure that only web services will be used in critical business processes that satisfy the requirements defined by the user. The selection and execution of a certain web service depends on its QoS-properties that must be guaranteed in Service Level Agreements (SLAs). The compliance with SLAs is monitored by the system as well. Furthermore we introduce a prototypical implementation of our web service architecture.     

Privacy4DRM: Nutzer-und datenschutz-freundliches Digital Rights Management

Zusammenfassung  Die DRM-Diskussion ist festgefahren: Weil die Verwertungsindustrie ihre digitalen Rechte mit Hilfe von Technik und staatlichem Zwang zu verteidigen versucht, verweigern sich die Nutzer. Diese Blockade ist nur aufzul?sen, wenn die digitalen Rechte der Urheber auch an den Interessen der Nutzer und damit dem Datenschutz ausgerichtet werden.     

采用射影几何方法实现视觉模拟系统

阐明了计算机视觉与人类视觉存在着模糊与分明、基于生物智能与基于数值计算的主要区别。从基于图象的三维信息恢复的基本输入输出问题入手，详细阐述了单目视觉模拟与双目视觉模拟两种基于图象的三维信息恢复方法。导出了双目平行视觉模拟和交叉视觉模拟的公式和方法，并开发了视觉模拟软件，实验证明了这一软件的可行性。     

Ein Planungsansatz zum Umgang mit Störungen bei der Produktion: Die flexible Produktionsfeinplanung mithilfe von Planungsschritten

Disruptions like the breakdown of machines or delays in the delivery of materials cause generated production plans to be useless, at least in some parts. A new planning approach for coping with this uncertainty caused by disruptions is presented. Planning steps that are described by properties, preconditions and consequences are used for material requirements planning and scheduling. If their preconditions are satisfied in a certain state of environment, planning steps will be applicable. The consequences of planning steps change the state of environment. Each customer order establishes a goal of a new planning problem to be achieved by applying planning steps. Plan execution concerns all planning steps applicable in a certain state of environment. In choosing among applicable planning steps and among available resources the flexibility of plan execution is preserved.     

Die kritischen Erfolgsfaktoren für EDI-Dienstleistungsanbieter

The potential of Electronic Data Interchange (EDI) has not yet been fully realized despite the existence of appropriate standards and technologies. Service providers in this area play an important role as providers of the infrastructure, providers of conversion programs, or consultants. This paper examines the critical success factors of EDI service providers as perceived by them and their customers. It finds that the views of these groups are partly divergent, especially with respect to the need for knowledge of business processes. The findings can help providers to improve their services for their own benefit and the benefit of their users.