This paper studies the impacts of vehicular communications on efficiency of traffic in urban areas. We consider a Green Light Optimized Speed Advisory application implementation in a typical reference area and present...
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Guided wave techniques have proven to be an outstanding technique for THz sensing and spectroscopy applications. Here, we report on a cylindrical-based guided wave structure that omits the need for high index silicon ...
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Guided wave techniques have proven to be an outstanding technique for THz sensing and spectroscopy applications. Here, we report on a cylindrical-based guided wave structure that omits the need for high index silicon ...
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It is crucial for enterprises to execute business operations in a compliant way. This is especially true for IT-driven business processes as enterprises may face considerable fines when violating laws and regulation i...
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It is crucial for enterprises to execute business operations in a compliant way. This is especially true for IT-driven business processes as enterprises may face considerable fines when violating laws and regulation in their business processes. Through the advent of cloud computing, a new dimension of compliance requirements within the research area of compliant business process design has emerged. Data-sovereignty is one of the major compliance concerns enterprises have to deal with when moving applications and data to the cloud. Enterprises are fully responsible for their data, also when the data is not present within their IT premises anymore. This lead to the policy that specific data must not leave the IT premises of the enterprise. In this paper we present an approach to support the human process designer in modelling compliant business processes. We are focusing on compliance requirements which have to be considered in the field of cloud computing. These requirements have been created to meet laws and regulations. These laws and regulations are considering data which is to other countries, for example. Looking at the characteristics of these requirements, we deal with data-centric compliance rules here.
The HYPOLED project, partly funded by the European Commission, started in 2008. Its goal is to develop OLED Microdisplays for Mobile Multimedia HMD and Projection Applications. This contribution describes the objectiv...
The HYPOLED project, partly funded by the European Commission, started in 2008. Its goal is to develop OLED Microdisplays for Mobile Multimedia HMD and Projection Applications. This contribution describes the objectives and present specifications for devices, the personal display and micro- projection unit as well as intermediate results.
We present a novel approach for integrated management of networks and information systems, based on the specification of executable behaviour models. A model processing plane is introduced, consisting of a number of p...
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The most sustainable technology for conversion of natural gas into electricity and heat in the low to medium power levels, is a Solid Oxide Fuel Cell (SOFC) based Combined Heat and Power (CHP) unit. Electrical efficie...
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ISBN:
(纸本)9781622763856
The most sustainable technology for conversion of natural gas into electricity and heat in the low to medium power levels, is a Solid Oxide Fuel Cell (SOFC) based Combined Heat and Power (CHP) unit. Electrical efficiencies of up to 60 % and total efficiencies of more than 90 % down to electrical powers of only 1 kW, makes these systems attractive for applications in varying power classes. The range between 10 and 50 kWel is especially promising for competition with conventional CHP units and the electrical grid. Different system layouts options exist to meet the technical requirements of specific applications as well as the cost targets for a early market entry. Main distinguishing features are the method of processing natural gas into a hydrogen-rich reformate (i.e. partial oxidation vs. steam reforming) and the cell stack technology used. As a result, electrical efficiencies, system complexity, and costs vary. Applied to cogeneration, the overall efficiency has the main impact on the profitability of the CHP unit, provided there is existence of a sufficient heat demand. Electrical efficiencies are dominated by power to heat ratios or the utilization factor, this means the number of operation hours needs to be increased. The calculation of CHP cost saving potentials is impeded strongly by application dependent parameters like profiles of heat and electricity demand as well as local gas and electricity prices. For Germany, payback periods can be calculated since typical load profiles of single and multi-family homes are available. Here, the choice of SOFC system layout depends on the economic viability of electricity feed-in to the grid. If funding is available, high electrical efficiencies are clearly favored. This is also valid for applications where only domestic hot water heating is required. Small base load power generators are profitable provided that the system cost targets can be met. Larger SOFC system in a power range of >100 kWel face a strong competition
Compliance of IT-enabled business processes is a research area gaining more and more attraction for enterprises today. Many enterprises are on the gap of installing workflow systems within their premises. During this ...
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Compliance of IT-enabled business processes is a research area gaining more and more attraction for enterprises today. Many enterprises are on the gap of installing workflow systems within their premises. During this process they need to make sure that several regulations, coming from governments or enterprise-internal institutions, are obeyed. We argue that the compliance regulations, enterprises are faced with today, can be built using a number of atomic compliance rules. Until now only control-flow-related atomic compliance rules have been identified in literature. In this paper we extend this list with several data-related atomic compliance rules. We further show how control-flow-related compliance rules and data-related compliance rules can be combined. A fundamental finding that we made in our work with industrial use case partners from EU projects, as well as projects with customers, is that for the specification of control-flow-related compliance rules data issues must also be considered. The main contribution of this paper is a collection of combined compliance rules implementing complex compliance requirements which consist of atomic control-flow related and data-related compliance rules.
Management of business processes is typically performed on multiple levels, each with different granularity, language constructs, and abstraction. Starting from an initial sketch of the activities to be performed, sev...
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Management of business processes is typically performed on multiple levels, each with different granularity, language constructs, and abstraction. Starting from an initial sketch of the activities to be performed, several refinements are made to entirely specify the business process, its artifacts, and participants. Then, information relevant for process execution can be added to enable efficient automation in the context of a service-oriented architecture (SOA). However, dealing with changes initiated by business or technology is a key difficulty in this approach. If change management is not performed properly then process models become out of sync which results in losing the alignment of business and IT. To address this challenge, we propose a synchronization method based on model element correspondence that considers change management between process models on different abstraction levels. We show how synchronization can be established and changes are propagated using a change queue for synchronization continuity. Finally we present a prototypical implementation of the key concepts.
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