共查询到20条相似文献,搜索用时 46 毫秒
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自2010年11月公安部部署开展打击侵犯知识产权和制售伪劣商品犯罪"亮剑"行动以来,全国公安机关高擎"为国打假、为民打假"旗帜,将制售假冒伪劣农资、食品、药品、名牌商品等事关国计民生的犯罪作为打击重点,全力"挖源头、捣窝点、摧网络、追逃犯",创新专案集群战役等专业化打击手段,对职业化、产业化和集团化的犯罪开展持续、不间断猛烈打击,对侵权假冒犯罪发起全面围剿。行动中,各地公安机关按照"打大、打多、打深、打精"的思路,坚持创新战法,强化情报信息搜集、研判,对侵权假冒犯罪实施精确、合成、严厉打击,取得了阶段性成果。 相似文献
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Large-scale scientific projects have become a major impetus of scientific advances. But few studies have specifically analyzed how those projects bolster scientific research. We address this question from a scientometrics perspective. By analyzing the bibliographic records of papers relevant to the Sloan Digital Sky Survey (SDSS), we found that the SDSS helped scientists from many countries further develop their own research; investigators initially formed large research groups to tackle key problems, while later papers involved fewer authors; and the number of research topics increased but the diversity of topics remains stable. Furthermore, the entropy analysis method has proven valuable in terms of analyzing patterns of research topics at a macroscopic level. 相似文献
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When manufacturing processes have a tendency to deteriorate over time and begin producing defective products, there is always a trade-off between the cost and/or rework time that is associated with such defectives and the amount of time that is spent inspecting and restoring the process. Although a considerable amount of attention has been devoted to this trade-off as it is found in high-volume, repetitive manufacturing, we study it in a job shop environment. In particular, we study the way in which inter-job setups affect the inspection policy. After modeling the problem as one of maximizing the throughput of defective-free jobs, we describe a simple algorithm which identifies optimal inspection intervals. 相似文献
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Uniformity of filament strength within a flax fiber batch 总被引:1,自引:0,他引:1
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Naumann A Sundqvist J Ogiewa M Boitier L Czernohorsky M Sienz S Probst G Jongbloed B Beulens S Maes JW Thomas S 《Journal of nanoscience and nanotechnology》2011,11(9):8040-8043
This work reports the feasibility of silicon and silicon germanium epitaxy using an ASM A412(TMa) LPCVD all quartz, hot wall, vertical batch furnace reactor using 100 wafer product loads. The very same furnace can be used for 25 wafer and 200 wafer load size, without any hardware changes, dependant on production needs. Following this approach a significant cost reduction for epitaxy in 300 mm high volume manufacturing is possible and enables new applications. The native oxide of the substrate was removed by wet chemical cleaning with time coupling of less than 1 h and subsequent in-situ low pressure hydrogen anneal prior to Si or SiGe deposition. The epitaxial layers were grown using silane and germane. The Si and SiGe layers have been characterized with ToFSIMS, XRD, Raman, AFM and TEM confirming excellent crystalline quality, layer thickness and within wafer SiGe stoichiometry uniformity. 相似文献
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英国四大著名展会经过多时磋商,日前实现大联合。联合后的展会全称为“TOTAL P&P加工与包装综合展”,将包括:PPMA设备展(加工与包装机械)、PAKEX包装展(包装设备及包装材料)、EUROCHEM欧洲化工技术展(化工加工技术)以及INTERPHEX国际医药技术展(生物、医药 相似文献
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Martin Pieper Zinaida Kutelova Sergej Aman Jürgen Tomas 《Advanced Powder Technology》2013,24(1):229-234
A discrete population balance approach to model batch grinding is presented and used to simulate baryte grinding in a vibratory disc mill. The grinding kinetics used in the simulation are measured independently with the grinding rate depending on the particle size. A bimodal fragment size distribution of a single breakage event according to the Austin approach is used. The resulting model was solved by numerical integration and the results are discussed concerning accuracy and applicability. The experimental data are compared with the calculated results and show good agreement with the simulations. The breakage distribution is calculated for different particle sizes. This approach avoids the fitting of a large number of parameters to few experimental values, making the model more robust and allowing a wider range of applications, e.g. process optimization. 相似文献
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We address the problem of scheduling a single-stage multi-product batch chemical process with fixed batch sizes. We present a mixed-integer nonlinear programming model to determine the schedule of batches, the batch size, and the number of overtime shifts that satisfy the demand at minimum cost for this process. We introduce a polynomial-time algorithm to solve the problem when the processing times of all batches are identical and the setup and cleaning times are sequence-independent. The solution procedure is based on recognizing that the optimal fixed batch size is a member of a set whose cardinality is polynomial. Given a batch size, the problem may be formulated as an assignment problem. Thus, an optimal solution may be found by iteratively solving a polynomial number of assignment problems. This work was motivated by a pesticide manufacturing company in the design of a new plant where the assumptions of a single bottleneck machine, fixed batch sizes, sequence-independent setup times, and identical batch processing times are all valid. An example is developed for this application. 相似文献
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The kinematics and dynamics of a point vortex ring in an incompressible fluid and its interaction with a surface are considered.
Polotsk State University, Novopolotsk, Belarus. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 69, No. 1, pp. 118–122,
January–February, 1996. 相似文献
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Conclusions On the basis of the above investigation we consider that it is possible to recommend the fusing temperature of corundum as a secondary reference point of the temperature scale. 相似文献