25 research outputs found

    Improving CE with PDM

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    The concept of Concurrent Engineering (CE) centers around the management of information so that the right information will be at the right place at the right time and in the right format. Product Data Management (PDM) aims to support a CE way of working in product development processes. In specific situations, however, it is hard to estimate the contribution of a particular PDM package to CE. This paper presents a method to assess the contribution to CE of a PDM package in a specific situation. The method uses the concept of information quality to identify the gap with CE information quality requirements. The contribution of PDM to bridge this gap is estimated. Decisions on improvement actions are supported to improve readiness for PDM as well as to improve CE. The method has been tested in a real-life situation

    Towards a design typology

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    Terrestrial and submarine evidence for the extent and timing of the Last Glacial Maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands

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    This paper is the maritime and sub–Antarctic contribution to the Scientific Committee for Antarctic Research (SCAR) Past Antarctic Ice Sheet Dynamics (PAIS) community Antarctic Ice Sheet reconstruction. The overarching aim for all sectors of Antarctica was to reconstruct the Last Glacial Maximum (LGM) ice sheet extent and thickness, and map the subsequent deglaciation in a series of 5000 year time slices. However, our review of the literature found surprisingly few high quality chronological constraints on changing glacier extents on these timescales in the maritime and sub–Antarctic sector. Therefore, in this paper we focus on an assessment of the terrestrial and offshore evidence for the LGM ice extent, establishing minimum ages for the onset of deglaciation, and separating evidence of deglaciation from LGM limits from those associated with later Holocene glacier fluctuations. Evidence included geomorphological descriptions of glacial landscapes, radiocarbon dated basal peat and lake sediment deposits, cosmogenic isotope ages of glacial features and molecular biological data. We propose a classification of the glacial history of the maritime and sub–Antarctic islands based on this assembled evidence. These include: (Type I) islands which accumulated little or no LGM ice; (Type II) islands with a limited LGM ice extent but evidence of extensive earlier continental shelf glaciations; (Type III) seamounts and volcanoes unlikely to have accumulated significant LGM ice cover; (Type IV) islands on shallow shelves with both terrestrial and submarine evidence of LGM (and/or earlier) ice expansion; (Type V) Islands north of the Antarctic Polar Front with terrestrial evidence of LGM ice expansion; and (Type VI) islands with no data. Finally, we review the climatological and geomorphological settings that separate the glaciological history of the islands within this classification scheme

    A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum

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    A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorities for future work. The synthesis is intended to be a resource for the modelling and glacial geological community

    Protoplast Fusion. Genetic Engineering in Higher Plants

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    Inter-organisational project management in context: managing differences

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    Although in many organisations projects are run according to a standard procedure many projects run out of time and budget, don't achieve the required quality standards, or don't even finish at all. This is especially the case for large and complex projects with large differences between the parties involved. Although there is much knowledge and experience on what the causes are of sub-optimal project performance, this knowledge is still rather experential and anecdotal. In this paper, we will present a systematic approach towards building knowledge on factors influencing multi-site project behaviour. For this purpose, we will consider projects as temporary organisations. We will identify three classes of problems, which may lead to project failure. The paper addresses part of the causes of problems, namely differences between project parties. Our research focuses on new product development projects performed at multiple sites. A model will be presented of essential classes of differences to take into account in managing a project. In addition, a learning approach towards supporting project management in identifying and managing differences will be presented. The approach is illustrated with examples from a longitudinal case study into Dutch-Mexican collaborative projects

    "Actionable" critical success factors for supply chain information system implementations : Exploratory findings from four German pork supply chains

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    Implementing a supply chain information system (SCIS) incurs organizational and technical complexities. For managing these complexities, information system researchers have identified generic critical success factors. However, CSFs are abstract and, therefore, difficult to use in practice. To maximize the chances of successfully implementing a SCIS in the food industry, we aim to identify "actions" linked to CSFs. We, consequently, investigated four German pork supply chains that implemented a SCIS. Fourteen critical success factors were made "actionable"; most actions were identified for the CSFs "manage change and deliver training" and "select standards, vendor, and software package", indicating their relative importance

    Transdisciplinary approach to hyper-transparency

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    Over the last decade, transparency schemes have started to undergo a radical transformation. This transformation is driven by advancements in cloud computing, cryptography and automated measurement technology, which have made it possible to develop shared information management systems (SIMS). These SIMS form the backbone of the latest, state-of-the-art in the transparency space: hyper-transparency schemes. These new transparency schemes and associated SIMS offer companies, both small and large, the opportunity to redesign their supply chains and to establish more direct relationships with their second- and third-tier trading partners, as well as with the consumer. However, the companies also face various challenges in implementing and operating such hyper-transparency schemes. There are legitimate concerns about privacy, ownership and access to data and, related to this, who controls the SIMS. The present paper discusses the ongoing development of a SIMS. The objective of this SIMS is to: (1), help empower smallholders in agri-food supply chains to establish more direct connections with the consumer; and (2), help empower consumers to get more direct insight into the manner in which their food stuff is being produced. The paper presents the design of the SIMS and discusses its transdisciplinary development processes.</p
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