Suchergebnisse

W celu efektywnego przeprowadzenia cyfrowej transformacji państwa niezbędne jest zastosowanie odpowiedniego aparatu metodycznego. Jednym z narzędzi wspierających przeprowadzenie tej transformacji może być architektura korporacyjna państwa. W artykule podjęto próbę zdefiniowania tego pojęcia oraz zaprezentowano autorski metamodel pozwalający na jednolite stosowanie pojęć używanych na diagramach architektonicznych. Dzięki temu możliwe jest zbudowanie spójnego opisu państwa w ujęciu architektonicznym.

AbstractThe mediation metamodel provides a systematic framework for understanding mediation as it is practiced in a variety of professional and cultural contexts. Six mediation practices are introduced within the framework of the metamodel: settlement mediation, facilitative mediation, transformative mediation, expert advisory mediation, wise counsel mediation, and tradition/based mediation. The relationships of these different practices to one another are explored and the assumptions underlying them are examined with reference to the literature. The metamodel provides orientation in the dispute resolution field not only for mediators, parties, and their lawyers, but also for regulators, referring bodies, researchers, and students of mediation.

Increasing recognition of the extent and speed of habitat fragmentation and loss, particularly in the urban fringe, is driving the need to analyze qualitatively and quantitatively regional landscape structure for decision support in land-use planning and environmental-policy implementation. The spatial analysis required in this area is not well served by existing spatial-data models. In this paper a new theoretical spatial-data metamodel is introduced as a tool for addressing such needs and a new formalism is presented for spatial-data models on the basis of ideas from mathematical graph theory and category theory. Additionally, this formalism is used to describe a specific spatial-data model useful within the problem domain of decision support for socioecological systems. This model explicitly includes the notion of graph duality.

Kurze Reaktionszeiten auf Produktänderungen zu gewährleisten, ist aktuell eine große Herausforderung im Maschinenbau. Als Lösungen werden zunehmend Metamodelle entwickelt, die einzelne Fertigungsprozesse abbilden und eine schnelle Datenverarbeitung ermöglichen. In diesem Beitrag werden Anforderungen und Lösungsansätze vorgestellt, die eine Verknüpfung von Metamodellen einzelner Prozesse zu übergreifenden Metamodellen für die ganzheitliche Prozessfolgenoptimierung ermöglichen.
 
Ensuring short reaction times to product adjustments is currently a great challenge in mechanical engineering. Therefore, metamodels which illustrate individual manufacturing processes and enable fast data processing are increasingly developed as solutions. This paper presents requirements and solution approaches that allow linking metamodels of individual processes to generate cross-technology metamodels for the holistic optimization of process sequences.

ABSTRACTField service management continues to be a major challenge for many service organizations as companies are required to provide more service with less resources. Especially in information intense environments, short response times for service calls are essential to avoid disruptions to a business office or production facility. Managers must regularly assess their manpower needs, and ensure that their allocation and operational decisions lead to the best service at the lowest cost.Xerox Corporation provides copiers, duplicators, and printing systems to an international market. Xerox operates a service network consisting of over 30,000 trained service personnel, each allocated to service regions by the service planning staff. Response‐time planning involves many challenging problems: requirements planning at the national level, allocation planning at the district level, and operational planning at the team level. Customer service is critical and is commonly measured by response time—the time that elapses from when a service call is placed to when a service engineer begins service. This paper discusses how Xerox Corporation has used simulation models and metamodels to improve response‐time planning and field service operations.

Simulation is a very useful tool in the design of the part and process conditions of high pressure die casting (HPDC), due to the intrinsic complexity of this manufacturing process. Usually, physics-based models solved by finite element or finite volume methods are used, but their main drawback is the long calculation time. In order to apply optimization strategies in the design process or to implement online predictive systems, faster models are required. One solution is the use of surrogate models, also called metamodels or grey-box models. The novelty of the work presented here lies in the development of several metamodels for the HPDC process. These metamodels are based on a gradient boosting regressor technique and derived from a physics-based finite element model. The results show that the developed metamodels are able to predict with high accuracy the secondary dendrite arm spacing (SDAS) of the cast parts and, with good accuracy, the misrun risk and the shrinkage level. Results obtained in the predictions of microporosity and macroporosity, eutectic percentage, and grain density were less accurate. The metamodels were very fast (less than 1 s); therefore, they can be used for optimization activities or be integrated into online prediction systems for the HPDC industry. The case study corresponds to several parts of aluminum cast alloys, used in the automotive industry, manufactured by high-pressure die casting in a multicavity mold. ; This work was supported by projects OASIS and SMAPRO. The OASIS project has received funding from the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 814581. The SMAPRO project has received funding from the Basque Government under the ELKARTEK Program (KK-2017/00021).