热送热装生产计划优化方法研究

分析了某钢铁企业在热送热装生产时的主要约束条件。采用遗传算法对生产计划进行优化,以提高热送热装率,给出了仿真结果。该方法可在大量的生产合同中很快找出满足各种生产约束条件的热送热装生产计划的可行解。     

浅谈热装热送在带钢厂生产中的应用

阐述了带钢厂实施热装热送有利条件,生产组织管理的特点、１９９９年热装与冷装技经指标对比和热装热送效益情况。     

唐钢连铸坯热送热装实践

结合唐钢连铸坯热送热装工作实践，提出做好生产组织协调提高企业整体管理水平是热送热装工作的关键，多品种，批量生产是提高热送热装率的有利条件。     

热送热装节能效果评价

制定了连铸坯热送热装节能效果评价指标及评价方法，并应用此评价方法对某企业热送热装工作、节能效果和节能潜力进行了分析。     

梅钢热送热装生产现状与展望

随着梅钢产销系统的上线,梅钢实现了热送热装直接轧制新技术,介绍了梅钢热送热装工作的发展历程及目前工作开展情况,对取得的经济效益和未来热送热装增长潜力进行了初步分析。     

马钢1580热轧产线热送热装率的提升实践

钢铁企业是能源消耗大户,为探索绿色低碳制造技术,以马钢1580热轧产线热送热装率的提升过程为例,对生产计划管理、热送管理、热装管理、信息化管理四个方面进行专项推进,实现了优化钢轧界面效率、降低热轧加热炉能源消耗的目的,达到有效减少碳排放、保护生态环境的效果,对企业节能环保、绿色低碳具有重大的意义。     

攀钢连铸板坯热送热装及相关工艺研究

针对攀钢连铸板坯热送热装生产现状，开发了板坯热送，加热过程数学模型，进行了铸坯生产组织方式及表面质量状况轧制前后对应关系的工业试验，在此基础上，建立了铸坯热送热装管理办法和加热炉操作规程。生产统计表明，铸坯热送热装率从１９９５年的１６．７％提高到１９９６年的３６．９％平均入炉温度达５６５℃。     

基于延时Petri网的热送热装生产计划模型的建立与分析

应用延时Ｐｅｔｒｉ网对连铸－热轧生产过程进行了描述，建立生产计划模拟模型，并利用此模型对热送热装一体化生产计划进行模拟分析和计算，得到了满意的结果。     

连铸坯热送热装设备设计与应用

介绍了福建三钢闽光股份有限公司连铸坯热送热装工艺及设备,对输送辊道、横移机、转盘的功率进行计算,并阐述了连铸坯热送热装技术及设备在轧钢生产上的经济效益.     

热送热装的实践

介绍了渐钢热送热装的基本工艺路线和４个发展阶段;分析了热送热装在降低企业加热炉综合燃耗、减少重油消耗、减少中间坯库存等方面的作用;阐述了企业开展热送热装与促进企业工艺和产品结构优化之间的关系,并结合目前热送热装工作存在的问题,提出了今后研究和工作的方向。     

热连轧GH4169合金晶粒的长大规律

对热连轧GH4169合金在固溶处理过程中晶粒长大规律进行了系统的研究。研究结果表明,该合金δ相溶解温度在990~1 000℃之间,δ相对晶粒长大有显著阻碍作用,在低于δ相溶解温度进行固溶处理时,析出的δ相使得晶粒长大缓慢;在高于δ相溶解温度以上时,晶粒随温度的升高快速长大。晶粒长大动力学表明：在高于δ相固溶线温度以上进...     

Nucleotide sequence of the VP4-encoding gene of an unusual human rotavirus (HCR3)

Human rotavirus strain HCR3 was isolated from the stool of a clinically normal infant and identified as a serotype G3 rotavirus; however, it could not be grouped into any known human VP4 genetic groups by a polymerase chain reaction assay. The fourth gene of strain HCR3, which encodes the outer capsid protein VP4, was sequenced. This gene is 2362 nucleotides in length and contains one open reading frame capable of encoding a protein of 776 amino acids. The VP4 protein of strain HCR3 shared 67.5-73.5% amino acid identity with those of strains KU, RV-5, 1076, and K8, representing four human genetic groups, and relatively high homology (84.7%) with a fifth genetic group represented by strain 69M, whose VP4 shows more similarity to animal than to human strains. Strain HCR3 shared higher VP4 amino acid homology with various animal rotaviruses, ranging from 74.5 to 89.4%. These observations suggest that the VP4 outer capsid protein of strain HCR3 represents a new VP4 genetic group that is more closely related to animal rotaviruses than to human rotaviruses.     

Assessing risk for violence among psychiatric patients: The HCR-20 violence risk assessment scheme and the Psychopathy Checklist: Screening Version.

This study examined the predictive validity of the HCR–20 (Historical, Clinical, and Risk Management) violence risk assessment scheme and the Psychopathy Checklist: Screening Version (PCL:SV). Files of 193 civilly committed patients were coded. Patients were followed up in the community for an average of 626 days. Receiver operating characteristic analyses with the HCR–20 yielded strong associations with violence (areas under curve [AUCs?=?.76–.80). Persons scoring above the HCR–20 median were 6 to 13 times more likely to be violent than those scoring below the median. PCL:SV AUCs were more variable (.68–.79). Regression analyses revealed that the HCR–20 added incremental validity to the PCL:SV and that only HCR–20 subscales predicted violence. Implications for risk assessment research, and the clinical assessment and management of violence, are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

天铁企业员工信息管理程序的设计

阐述了天铁企业员工信息管理程序的设计过程,通过对业务需求的分析,对管理程序进行全新开发,实现了员工信息的录入、管理、查询等功能,增强了软件实用性,提高了人力部门的工作效率,实现了人员管理规范化、系统化、科学化.     

Reengineering of Construction Management Process

Applying the business process engineering philosophy, this study focuses on developing a construction management process reengineering (CMPR) method to improve the efficiency of construction management. The CMPR method includes four phases, namely, process representation, process transformation, process evaluation, and reengineering activity. Using CMPR, inefficient operations within a construction company working process can not only be identified, but a new rational operation process can also be developed to improve management efficiency. In this way, the competitive ability of a construction company is also increased. This study argues for the need of a new research agenda in construction management in general. This is illustrated by information technology within construction—in particular, by examining the potential application of the reengineering philosophy. The research possibilities are identified and tested based on the implementation of the CMPR method. To some extent, this study establishes a new agenda of process reengineering for future research.     

安钢设备及技术引进管理信息系统的设计与实现

针对国营钢铁特大型企业设备及技术引进管理信息系统的设计和开发进行了研究。采用系统工程和ISO9000质量管理标准的理论和方法,对业务流程进行了分析与再造,用信息技术对再造后的流程进行信息化改造,设计出系统总体功能模型,在总体功能设计的基础上利用软件工程的原型化开发方法进行了研究。     

计算机管理信息系统在石钢转炉炼钢厂的应用

石钢转炉分厂计算机管理信息系统是将计划,生产,管理等信息用计算机网络进行集成的新型,高效率,高柔性的智能生产系统,其融合了生产自动化技术,计算机网络技术,信息处理技术等先进技术及物资管理,人事管理,档案管理等科学的管理方法,来加快建立现代企业生产经营模式,提高经济效益。     

Control of protein synthesis by hemin. Isolation and characterization of a supernatant factor from rabbit reticulocyte lysate

The regulation of protein synthesis by hemin in rabbit reticulocyte lysates is mediated by a hemin-controlled translational repressor protein (HCR) that inhibits polypeptide chain initiation. The effect of this translational inhibitor can be reversed by a high molecular weight protein in the post-ribosomal supernatant fraction. This supernatant factor has been purified approx. 700-fold. It is as effective in reversing the inhibition of protein synthesis due to an early form of HCR (intermediate HCR) as it is in stimulating protein synthesis in the absence of hemin. It is progressively less effective at reversing the inhibition of protein synthesis due to a late from of HCR (irreversible HCR), double-stranded RNA, and oxidized glutathione. The supernatant factor is chromatographically different from the initiation factor IF-MP, isolated from reticulocyte ribosomes, that can also overcome the inhibitory effect of HCR. The supernatant factor does not require hemin for activity, and its action is somewhat suppressed by a level of hemin that is optimal for protein synthesis.