基于粗糙集理论的知识发现

粗糙集理论是一种新型的处理模糊和不确定知识的数学工具。目前已在人工智能、知识与数据发现、模式识别与分类等方面得到了广泛应用。介绍Rough Set理论的基本思想及分析了粗糙集方法的特点,描述一种基于粗糙集理论的知识发现步骤,并以实例作出说明。     

网络测控系统在热处理车间中的应用

针对热处理车间网络控制的要求,采用组态王Kingview 6.1作为开发软件,讨论了基于现场总线的集散控制系统,并在这个基础上引入了双机冗余技术,提高了整个系统的可靠性和稳定性.     

碳酸丙烯酯复合溶剂脱碳研究

本文介绍了碳酸丙烯酯法脱碳技术概况,讨论了该技术存在的问题及溶剂改性研究的进展情况。结合我国脱碳工业的实际情况,提出了碳酸丙烯酯复合溶剂法是碳酸丙烯酯脱碳技术改进和发展的最佳途径。     

Reducing students’ carbon footprints using personal carbon footprint management system based on environmental behavioural theory and persuasive technology

This study applied environmental behavioural theories to develop a personal carbon footprint management system and used persuasive technology to implement it. The system serves as an educational system to improve the determinants of students’ low-carbon behaviours, to promote low-carbon concepts and to facilitate their carbon management. To assess the validity of the system, high school students were chosen to participate in an experiment, the results of which reveal (1) the system has significant and positive short-term and relatively long-term effects on the reduction of their self-reported carbon footprint, (2) the system significantly improves their carbon footprint awareness and perceived behavioural control (PBC), and it also promotes behavioural subjective norms, (3) reduction of their self-reported carbon footprint is significantly correlated to PBC, carbon footprint awareness and attitude and (4) PBC is the most critical determinant of carbon reduction. Suggestions are accordingly made.     

谈双电桥的灵敏度

通过理论和实验两个方面,讨论了如何测量双电桥的灵敏度及影响双电桥灵敏度的因素.     

Structural Reliability of Broadside of a Bulk Carrier

The ultimate bending moment and maximal shear stress of a bulk carrier with two structural forms （single hull and double hull/ are calculated separately by using the combined moment which is determined by stochastic process. Then the assessment of reliability is carried out. The results indicate that by introducing the double-hull structure, the shear stress of side can be decreased to half of that of the primary structure（ 50.7% i. but the effect on longitudinal strength is not obvious. Finally, the effects of different double-side skin widths on ultimate bending moment and the maximal shear stress are investigated, followed by proposals of the selection of the double-side skin width.     

双重二元经济结构下的城乡统筹发展

在统筹城乡发展的过程中,人们往往强调城乡二元经济结构而忽视了农村内部二元经济结构。事实上,由城乡二元经济结构和农村内部二元经济结构混和而成的双重二元经济结构已经成为国民经济的重要特征。本文认为,农村内部二元经济结构和城乡二元经济结构之间存在强化效应和反弹效应,共同规定和制约着我国二元经济的发展状况,并有针对性地提出了双重二元经济结构下统筹城乡发展的政策建议。     

"双师型"中职师资结构模式及队伍建设

中等职业教育迫切需要建立"双师型"师资队伍,要以任职资格而非职称为标准,来界定"双师型"中职师资资格,并将此作为新教师的培养目标、老教师的发展方向和整个师资队伍建设的结构框架.中职师资由三类教师构成:编制内专职教师、从社会各界聘请的兼职教师和在实习中企业指派的实习师傅,以此结构为基础,提高师资整体素质.     

概率积分的几种计算方法

文章给出计算概率积分∫-∞^∞e^x^dx的几种简便方法。     

留置盘问应纳入刑事诉讼强制措施

留置盘问作为一种行政强制措施在刑事侦查过程中发挥了重要作用，而公安机关的双重执法职能和留置盘问的双重法律属性，以及违法与犯罪的界限有时比较难以把握，导致了公安机关在办理治安案件中大量使用了留置盘问措施，从而引起许多行政诉讼案件。因此，应在刑事诉讼立法上将留置盘问纳入刑事强制措施，以明确其法律性质便于公安民警辨析，从而准确适用法律。