电动压下系统的局限

通过对电动压下局限性的研究，总结出了电动压下系统有三方面的不足，因此认为电动压下尽管是当今很好的轧辊辊径补偿系统和辊缝预设定系统，但不能作为轧制时的压下系统。     

Assessment of Performance of Seismic Isolation System of Bolu Viaduct

The Bolu viaduct is a 2.3-km-long seismically isolated structure that was nearly complete when it was struck by the 1999 Duzce earthquake in Turkey. It suffered complete failure of the seismic isolation system and narrowly avoided total collapse due to excessive superstructure movement. This paper presents an evaluation of the design of the viaduct’s seismic isolation system and an assessment of its performance in the Duzce earthquake. Evaluation of the seismic isolation system’s design has revealed that it did not meet the requirements of the AASHTO Guide Specifications for Seismic Isolation Design. Analysis of the viaduct with motions scaled in accordance with the AASHTO Guide Specifications resulted in a displacement demand of 820 mm, which is far more than the 210 mm displacement capacity of the existing isolation system. Analysis of the viaduct for a simulated near-fault motion with characteristics consistent with the site conditions resulted in an isolation system displacement demand of 1,400 mm. This indicates that, even if the isolation system had been designed in compliance with the AASHTO, it would have still suffered damage in the earthquake.     

Evaluation of a medical diagnosis system using simulator test scenarios

This paper describes an informal but systematic method for how to test and verify a knowledge-based system in a large open-ended medical target domain. The system used is Guardian, an intelligent system for monitoring and diagnosis of post-cardiac surgery patients in an intensive-care unit. The knowledge base is tested and verified by running the system on a series of realistic test scenarios, both with an embedded simulator and with an external simulation system. The same scenarios are presented to human test subjects, making it possible to compare and analyze the performance of the knowledge-based system with that of human physicians. The use of simulators instead of clinical data also means that it is possible to test crucial scenarios which occur seldom in medical practice. Our results show that a system like Guardian might indeed be useful in medical care.     

The indications for the appropriate use of magnetic resonance. The Health Technologies Evaluation Service of the Department of Health of the Basque Government, Osteba

Magnetic resonance imaging (MRI) allows the non-invasive obtention of diagnostic images, with no ionizing radiation emission and in any space plane. It has a great capacity to differentiate anatomic structures, and it is very useful for planning surgery or radiotherapy. It is the first choice diagnostic technique in conditions involving the central nervous system, useful for establishing diagnosis, surgery planning, and following lesions involving the spinal cord and spine. In the musculoskeletal system it may become and appropriate alternative to arthroscopy. Nevertheless, it is of limited use for the diagnosis of chest, abdominal and pelvic pathology.     

攀钢1号高炉专家系统的建立与运行

对攀钢引进的高炉专家系统的建立与运行,专家系统的内容、组成及结构,专家系统模型、冶金规则及冶金诊断进行了阐述,并结合一些实例阐明了专家系统的系统诊断、建议动作等特性.攀钢1号高炉专家系统的建立与运行实践表明,全面、准确、可靠、及时的一次检测数据以及紧密结合攀钢炼铁生产实际是运行和使用好高炉专家系统的必要条件.     

包钢档案馆信息化建设的思考

随着包钢现代企业制度的建立,企业的管理体制、运行机制等都发生众多变化,传统企业档案管理模式也必须进行相应的改革,以适应企业集团对档案工作的要求.文章通过联系实际,提供企业加速档案信息化建设势在必行,探究了信息化建设在档案知识管理中的作用.     

韶钢营销计算机网络管理系统开发

“韶钢营销计算机网络管理系统”是韶钢自主开发的大型数据库应用系统，主要构架为C／S模式，后台采用大型数据库Oracle8i，前台用delphi，系统对区域基价和现有计价办法进行分类组合，让其成为计算机能识别的特征属性，实现了在产品开单、出库时自动计价，调价时的开单金额重新核算，出库时产品自动识别功能．自2001年6月正式启用以来，大大提升了韶钢销售业务的管理水平和工作效率效果显著．本文简要谈谈“韶钢营销计算机网络管理系统”在韶钢信息化建设中的开发与应用情况。     

热工数据库系统的设计与开发技术

针对热工数据类型多，多数数据非线性强．相关图表查阅不便且读数误差大的现状，本文提出利用计算机强大的数据存储处理能力建立热工数据库系统，实现热工数据的快速准确查询，并介绍了热工数据库管理系统的功能特点及设计开发技术。将数据插值、神经网络等函数逼近的方法应用于查询程序的定制，大大加强了系统的查询功能，使系统的查询范围不仅仅局限于数据库中已有的数据记录．本文以饱和水及饱和蒸汽热力性质数据库为例，说明了系统查询功能的实现方法与效果。应用结果表明，热工数据库管理系统查询热工数据．速度快、精度高，不受人为因素影响，具有较大的实用价值。     

The femur-tibia control system of stick insects--a model system for the study of the neural basis of joint control

In a form of top-down analysis, the femur-tibia control system of stick insects is investigated. Open-loop experiments show that it is mainly velocity-sensitive with an extremely low velocity-threshold, that it possesses a very high gain and that it has only a very small phase reserve and thus works close to instability. The closed-loop system generates catalepsy. The system consists of a single sense organ with approximately 80 sense cells with known characteristics, a small number of interneurones (mainly non-spiking ones) and a small number of motor neurones. The characteristics of the whole system can quantitatively be attributed to the characteristics of its elements. The gain of the loop is state-dependent and the system is 'switched off' during active movements and replaced by a control system with different attributes. It is discussed that most of the characteristics of this system are, at least qualitatively, similar to joint control systems in other animals. Because the described system can be more easily investigated than other systems (especially in vertebrates) it can serve as a model against which more complicated joint control loops may be compared.     

Calculation of the liquidus of the Mo-C system

Conclusions Existing data on the Mo-C system make it possible to construct a consistent system of models of thermodynamic properties of phases. To obtain satisfactory agreement between calculated phase equilibrium lines and experimental results, it is necessary to allow for the solubility of carbon in molybdenum. The system of phase models enables the parameters of low-temperature solid-state transformations (in particular MoC formation) to be estimated.Translated from Poroshkovaya Metallurgiya, No. 4(268), pp. 37–42, April, 1985.