大规模定制下的质量控制系统框架设计

大规模定制为生产带来了变革和影响。针对新的生产方式的要求，根据推动大规模定制的过程方法和技术来分析他们对于质量控制产生的影响和要求，给出了大规模定制条件下的质量控制系统的建议，并给出了一个简要的系统模型。     

中小型液压缸防漏结构工艺

气弹簧后端省去封头，而用缸体直接封口，杜绝了漏气，强化了结构。文章着重介绍了实现这一结构的径向进给封口工具及工艺。     

A survey on approaches to gridification

The Grid shows itself as a globally distributed computing environment, in which hardware and software resources are virtualized to transparently provide applications with vast capabilities. Just like the electrical power grid, the Grid aims at offering a powerful yet easy‐to‐use computing infrastructure to which applications can be easily ‘plugged’ and efficiently executed. Unfortunately, it is still very difficult to Grid‐enable applications, since current tools force users to take into account many details when adapting applications to run on the Grid. In this paper, we survey some of the recent efforts in providing tools for easy gridification of applications and propose several taxonomies to identify approaches followed in the materialization of such tools. We conclude this paper by describing common features among the proposed approaches, and by pointing out open issues and future directions in the research and development of gridification methods. Copyright © 2007 John Wiley & Sons, Ltd.     

Genetic algorithms for optimal logical database design

The focus of this paper is database design using automated database design tools or more general CASE tools. We present a genetic algorithm for the optimization of (internal) database structures, using a multi-criterion objective function. This function expresses conflicting objectives, reflecting the well-known time/space trade-off. This paper shows how the solution space of the algorithm can be set up in the form of tree structures (forests), and how these are encoded by a simple integer assignation. Genetic operators (database transformations) defined in terms of this encoding behave as if they manipulate tree structures. Some basic experimental results produced by a research prototype are presented.     

基于窗口的面向对象的GUI设计

文中讨论了一种基于窗口的对象用户界面设计思想及方法，详细描述了各种类的定义。在ＤＯＳ环境下运用ＷａｔｃｏｍＣ＋＋语言在微机上开发运行。它可以使用户方便地进行再开发工作，界面运用事件处理方式由窗口、弹出菜单、图标、按钮等组成。效果良好。     

国内外小井眼钻井设备的发展

由于小井眼钻井成本低、排出岩屑体积小，对环境污染小，近几年来在世界范围内得到了大力发展，因此，各种小井眼钻井设备应运而生。介绍了目前国外小井眼钻井设备的发展状况及特点，提出了我国发展小井眼钻井设备的建议，并给出了一种小井眼钻机的初步方案。     

A visual news processing environment

CPP-TRS (Tonfoni 1989–94) is both a methodology and a language. Through the methodology (CPP — Communicative Positioning Program) those invisible aspects of communication are identified and represented by the meta-language (TRS — Text Representation Systems), which complements natural language. CPP-TRS is a new paradigm which applies to any communicative context.Icons in CPP-TRS are not intended to represent words or sentences in order to substitute them; they are rather intended to represent visually what natural language does not convey naturally. The improvement of communication is a challenge of the present and the future: CPP-TRS is designed explicitly for it.The CPP-TRS system thus is able to support the user with a set of visual tools, that are specifically suited to structuring text and communicating effectively.The same tools can support communication very effectively in situations where ambiguity can highly compromise the final result.The system may be used in a way that is either opaque or transparent to the reader of the text.Author of CPP-TRS¢ and CPP-TRS¢ Applications Designer.     

Exact probabilistic testability measures for multi-output circuits

The computation of probabilistic testability measures has become increasingly important and some methods have been proposed, although the exact solution of the problem is NP-hard. An exact analytical method for singleoutput combinational circuits is extended to deal with multi-output circuits. Such circuits are reduced to singleoutput ones by introducing a dummy gate, the X-gate, and applying to the resulting graph the analysis based on supergates.     

Surface characterization of 6H-SiC (0001) substrates in indentation and abrasive machining

Surface characterization of 6H-SiC (0001) substrates in indentation and abrasive machining was carried out to investigate microfracture, residual damage, and surface roughness associated with material removal and surface generation. Brittle versus plastic deformation was studied using Vickers indention and nano-indentation. To characterize the abrasive machining response, the 6H-SiC (0001) substrates were ground using diamond wheels with grit sizes of 25, 15 and 7 μm, and then polished with diamond suspensions of 3 and 0.05 μm. It is found that in indentation, there was a scale effect for brittle versus plastic deformation in 6H-SiC substrates. Also, in grinding, the scales of fracture and surface roughness of the substrates decreased with a decrease in diamond grit size. However, in polishing, a reduction in grit size of diamond suspensions gave no significant improvement in surface roughness. Furthermore, the results showed that fracture-free 6H-SiC (0001) surfaces were generated in polishing with the existence of the residual crystal defects, which were associated with the origin of defects in single crystal growth.     

提高金刚石工具电镀沉积速率的新工艺

本文从电镀理论分析入手，确定了影响沉积速率的因素，指出了常用的改进措施，并结合实际，提出了一套新的电沉积金刚石工具的工艺，该工艺通过提高镀液中主盐的浓度，不仅加快了电沉积的速率，而且改善了电镀层的质量。