Decision support system for the batching problems of steelmaking and continuous-casting production

This paper investigates two batching problems for steelmaking and continuous-casting (SCC) production in an integrated iron and steel enterprise. The tasks of the problems are to make the decisions as how to consolidate ordered slabs into charges, and then how to group charges into casts. The effective decisions on these batching problems can help to balance the requirements of materials in downstream production lines, improve the customer satisfaction levels, and reduce production costs (including reduction of open ordered slabs, less slabs quality upgrading, reduction of steel-grade changeovers, and reduction of inefficient utilization of tundishes lives). We first formulate the problems as integer-programming models by consider practical constraints and requirements, and then develop the two heuristic algorithms for the corresponding batching problems. By embedding above models and algorithms, we develop decision support system (DSS) software with interactive planning editor. The DSS has been tested by using practical data set collected from the steelmaking plant in Baosteel which is one of the most advanced iron and steel enterprises in China. Computational experiments demonstrate that the models and algorithms developed can generate the satisfactory solutions when they work together with the planning editor in the DSS.     

论沈从文作品中表现的湘西民歌体裁形式

沈从文在他的作品中大量运用了湘西民歌体裁形式 ,如号子体裁、山歌体裁和小调体裁 ,这说明沈从文不仅是一位伟大的文学家 ,也是一位民族音乐艺术家。     

信息时代军校教育训练发展对策

信息时代的到来 ,军事教育训练必须重视前瞻性、超前性和预见性 ,必须考虑未来高技术战争对军事人才的要求。未来战争的信息化程度将成为决定战争胜负的重要因素。制信息权将成为未来战场的重要制高点 ,构建包容信息技术基础知识的教学内容体系 ,探索新世纪军校教育训练发展对策意义重大。     

企业信息化及其指标体系探讨

本文讨论了企业信息化的基本概念和加速推进的必然性。从信息化的组织建设、信息基础设施、信息化系统的应用等三个方面入手 ,在国内首次提出了全面评估一个企业信息化程度的指标体系。对该指标的讨论可以为企业进行综合评价、结构性诊断、突破瓶颈、加快信息化建设 ,从而增强企业的竞争力提供依据。     

模糊教学法在女大学生体育课跳远教学中的实验研究

模糊教学法是针对竞技体育教育思想提出的一种新的教学方法 ,它符合现代学校体育改革与发展的思想观念 .研究表明 ,模糊教学法在女大学生体育课中效果良好 ,值得推广 .     

The Significance of Shift Work: Current Status and Future Directions

This paper provides a review and synthesis of research literature on the effects of shift work on workers’ physical health, mental health/well-being, and family life. The focus is on current knowledge, unanswered questions, and new directions for future research. The selection of research literature is guided by a general conceptual framework that identifies predictor variables, moderating variables, and outcome variables. The paper concludes with a discussion of the variables that should be incorporated into an agenda for future research.     

应用莫尔条纹法测定人体腰椎后关节三维位移量

应用莫尔条纹原理,测定人体离体腰椎三维运动时后关节的相对位移量,探索运动的角度、载荷和位移的相互关系,是直接研究关节运动学的一种简便有效方法。本文提供的实验结果对于研究腰椎后部结构的生理和病理功能具有重要的临床意义。     

双轴平动椭圆振动筛设计中的有关问题

本文在首次提出双轴惯性振动筛“力心”概念的基础上,对双轴惯性椭圆振动筛设计中的有关分析进行了讨论,列举了若干算例,编制了相应的计算机软件,可供振动筛研制设计时应用。根据本文所述方法,已经研制成功了具有平动椭圆运动轨迹的PTZS振动筛。     

A research on the assurance of family planning and providing for the aged]

An important cause of resistance to China's family planning (FP) program in rural areas is the need to have children to support parents in their old age. Provision of insurance for old age support will facilitate the implementation of the FP program among the rural population. A trial project was initiated in five cities and counties in Fujian province i 1986. The program included schemes for both eligible couples and for single children. The township or the village pays a lump sum or monthly premium to the insurance company for each couple, which enables them to collect 30-35 Yuan/month after they reach 55 years of age. To further expand the insurance program, a survey was conducted in 1987 to determine whether rural farmers would be willing and able to pay the insurance premium themselves. 77% of the respondents reported that they could afford to pay 60% of the premium. Among them, 59% were willing to pay. It was suggested that besides individual purchase of the insurance plan, the rural communities could contribute to the payment of the premium from the fines for unplanned births, from the local tax, and from the country government budget. Preferential treatment should be given to the couples of two daughters who receives sterilization; the communities should pay for a larger share of their premium. The current insurance scheme needs to be reformed so that the plan can offer more than the individual's bank savings. To do so, the insurance company needs to be able to invest their premium income and obtain higher returns. The employees of the insurance company need to improve their work efficiency to win the trust of the people in the program.