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1.
Li Wei College of water conservancy Hydropower Engineering Wuhan Univerity Wuhan ChinaChen Wen-xue Xie Sheng-zong China Institute of Water Resources Hydropower Research Beijing China 《水动力学研究与进展(B辑)》2002,14(4)
1 . INTRODUCTIONTheturbulentstructuresinnon circularductsandopenchannelsarecharacterizedbylongitudi nalvortices .Thesevorticesareth 相似文献
2.
Designing and managing a company's specific landscape and its business processes has been identified as a great challenge for several years. Business processes are highly dynamic and distributed and can only rarely be planned, modeled and analyzed completely. For a computer-aided business process system, which supports the designing and managing process, first of all a powerful uniform formalism is necessary, where all necessary knowledge concerning company's and its processes can be represented. In this paper we will concentrate on the introduction of such a formal methodology to describe business processes, company organization structures and information technology structures in one uniform formalism. The ideas we use are mainly based on methods from graph grammars, process management, Artificial Intelligence and business process (re)engineering. 相似文献
3.
Jonathan D. Linton Author Vitae 《Technological Forecasting and Social Change》2008,75(5):583-594
Many see Nanotechnology as the technology that will underlie the next Schumpeterian wave creating new opportunities for wealth and job creation. Further it is a process based or materials technology. Yet all currently used models of innovation are based on assembled products or service products and these simply do not recognize the differences in materials products nor the “enabling” nature of Nanotechnologies. If nanotechnology is poised to become the economic engine of this millennium and if current models of innovation, which are utilized, by policy makers and firm based strategist alike are based on technology product paradigms that are dissimilar to the realities of nanotechnology and other process-based technologies then there is cause for concern.Here the authors provide a model and supporting cases demonstrating a new process or materials based innovation model that is based on the tight coupling between product and process innovation of not only Nanotechnology-based products but other process-based products. This is an important finding, because it identifies and remedies a gap in the literature associated with earlier process and product innovation models. For process-based products like materials, food, chemicals and nanotechnologies any change to the manufacturing processes results in significant changes in end product features. The implications of this model to practice are considered. 相似文献
4.
中小企业要取得生存和发展的优势 ,快速开发成功的新产品已是其企业竞争战略中的关键部分。本文主要从项目管理的层次 ,结合我国中小企业的特色 ,运用高标定位的方法 ,借鉴库伯的门径管理流程 ,探讨中小企业如何应用项目管理以实施高质量的新产品开发流程 ,从而提高新产品开发项目的成功率。 相似文献
5.
基于BPR理论的企业重组 总被引:9,自引:0,他引:9
首先介绍BPR基本理论,接着从企业经营过程的具体实际出发,提出了基于BPR理论的企业重组,引出了企业重组的原则,内容,重组模型在企业中实施的具体步骤。 相似文献
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从金融发展和经济基础两方面选择了FIR等指标,构建了评价中国地区金融发展水平的评价指标体系,以层次分析法确定指标权重,以阀值法进行无量纲处理,利用所构建的指标体系,对2004年中国31个省市的金融发展水平进行检验。认为,东中西部地区金融发展水平差异明显,金融发展形如一右端被拉长的"橄榄球";东部地区金融发展水平成"圆柱体"形分布;影响西部地区金融发展水平的是"经济短板";制约各省份金融发展的"短板"各不相同。 相似文献
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工业化是实现现代化不可逾越的发展阶段,要缩短东西部地区之间的差距,振兴新疆经济,就必须走新型工业化之路。目前新疆工业化发展虽有一些有条件,但也存在制约工业化进程的因素,如工业结构层次较低、工业经济发展地区分布不均衡等。只有通过统筹规划、走特色经济之路、发展壮大工业园区等措施才能加快新疆工业化进程。 相似文献
10.
Linking performance drivers in production planning and inventory control to process choice 总被引:1,自引:0,他引:1
This study investigates how process choice relates to production planning and inventory control decisions. We empirically examine the validity of deductively derived patterns about these types of decisions. More importantly, we look for normative insights by exploring how production planning and inventory control decisions affect operations performance. Our findings show that production line and continuous flow plants use more of a level production strategy, and carry less raw material and work-in-process inventory. The performance drivers for these plants, through which the operations function excels, are effective utilization of equipment, reduced finished goods inventory, and reduced setup down time. To gain forward demand visibility and batching economies, job and batch shops rely much more on backlogs in their planning process. These plants use more of a production chase strategy and position inventory lower in the bills of materials. Four performance drivers for top-performing job and batch shops are to find ways that better anticipate customers' orders, have a more responsive chase strategy, carry less raw material or purchased inventory, and shorten production planning horizon, partly through less reliance on backlogs. It is intriguing that top-performing plants not only do the expected things, given their choice of process, but also excel in selected dimensions—some of which fit the profile normally associated with a different process choice. To monitor and continuously improve operations, evaluation ‘scorecards’ should pay particular attention to performance drivers, which change depending on the plant's process choice. 相似文献