一种工业无线手操器的设计与实现

基于工业无线网络相关技术,提出了一种低功耗的基于IEEE802．15．4技术的便携式工业无线手操器。首先概述了手操器的工作原理,然后详细介绍了系统硬件电路结构及实现的总体方案,最后重点描述了系统的软件架构及实现方法。测试结果表明该手操器工作稳定,达到相应性能指标,可满足一般工业应用的要求。     

Modalities in linear logic weaker than the exponential “of course”: Algebraic and relational semantics

We present a semantic study of a family of modal intuitionistic linear systems, providing various logics with both an algebraic semantics and a relational semantics, to obtain completeness results. We call modality a unary operator on formulas which satisfies only one rale (regularity), and we consider any subsetW of a list of axioms which defines the exponential of course of linear logic. We define an algebraic semantics by interpreting the modality as a unary operation on an IL-algebra. Then we introduce a relational semantics based on pretopologies with an additional binary relationr between information states. The interpretation of is defined in a suitable way, which differs from the traditional one in classical modal logic. We prove that such models provide a complete semantics for our minimal modal system, as well as, by requiring the suitable conditions onr (in the spirit of correspondence theory), for any of its extensions axiomatized by any subsetW as above. We also prove an embedding theorem for modal IL-algebras into complete ones and, after introducing the notion of general frame, we apply it to obtain a duality between general frames and modal IL-algebras.     

论株洲产业结构的调整与优化

从株洲产业结构的现状与特征出发,对如何进一步调整优化株洲的产业结构进行了探讨,提出了调整优化的产业结构的基本方针和对策。     

"震网"引发网络安全新思考

本文概述了近期发生的"震网"事件.同时分析了"震网"的特点和行为特征.并根据我国的具体情况给出了安全警示和安全防范建议.     

通用中小型机械企业网站的需求分析

为了克服中小型机械企业建立网站的经费不足、功能不全和缺乏安全性等问题,提出了建立通用企业网站的方案。首先通过广泛调研企业的需求,总结和分析了企业信息、客户管理、产品管理、销售与市场管理、物资供应管理、人事管理和安全管理等模块的功能;其次,分析了主要的业务流程和业务重组。     

工业设计之创新思维方法浅析

工业设计是科学和艺术的综合体,创新思维在工业设计中具有十分重要的作用。它不仅决定了产品的外观,甚至还影响着产品的制造和使用过程。我国著名教育家陶行知先生认为,"处处是创造之地""天天是创造之时""人人是创造之人"。中国是制造大国,却不是设计大国。中国设计的原创性产品很少,中国的创新能力也亟待加强。但是随着科技的进步,中国的设计能力也在突飞猛进地发展。可以相信,未来的中国一定会成为一个设计大国。     

工业设计在企业中的应用与发展

工业设计与企业是紧密联系的。因为设计师设计的产品,最终是要批量生产的。在产品的"市场调研-研发-试生产-生产-服务"的整个过程中,工业设计都穿插其中,起着举足轻重的作用。     

面向高速工业无线网络的TDMA MAC协议设计与实现

随着无线技术的发展,在工业自动化中引入无线技术已经成为一种潮流,同时TDMA机制由于可以完全避免冲突,因此在大规模高实时要求的面向车间的无线技术研究中受到了广泛关注,但现在面向车间的高速实时无线技术的研究大都局限于软件仿真。通过在商用802.11硬件上设计并实现面向车间级工业应用的高速工业无线TDMAMAC层协议,建立了一个基于TDMA的面向工业应用的高速无线网络原型系统,实验结果表明实验平台完全能够支撑毫秒级时隙调度的TDMA应用。     

Towards the next generation of artificial neural networks for civil engineering

The purpose of this paper is to stimulate interest within the civil engineering research community for developing the next generation of applied artificial neural networks. In particular, it identifies what the next generation of these devices needs to achieve, and provides direction in terms of how their development may proceed. An analysis of the current situation indicates that progress in the development of artificial neural network applications has largely stagnated. Suggestions are made for advancing the field to the next level of sophistication and application, using genetic algorithms and related techniques. It is shown that this approach will require the design of some very sophisticated genetic coding mechanisms in order to develop the required higher-order network structures, and will utilize development mechanisms observed in nature such as growth, self-organization, and multi-stage objective functions. The capabilities of such an approach and the way in which they can be achieved are explored with reference to the problems of: (a) determining truck attributes from the strain envelopes they induce in structural members when crossing a bridge, and; (b) developing a decision support system for dynamic control of industrialized manufacturing of houses.