现代化安钢总图运输技术改造的展望

围绕实施《安钢产品结构调整总体发展规划》“三步走”目标时总图运输面临大规模技术改造,就如何做好安钢的总体布局,理顺全厂物流、能源流、信息流等方面进行了探讨,展望了总图运输布置紧凑、短捷、顺畅、连续、环境协调的现代化新安钢。     

基于SLP的短流程炼钢车间工艺布置设计研究

介绍了在工业发达国家广泛应用的一种先进设计方法——系统布置设计（SLP），以越南VANLOI公司年产30万t短流程炼钢工程为应用范例，采用SLP对炼钢车间进行了物流和非物流关系分析，求解得到车间最佳布置方案，验证了SLP法在短流程炼钢车间布置设计中的应用效果。     

四角烧嘴均热炉流场的改进

本文分析了方锭斜靠放置时的流场,并提出改进烧嘴的布置使炉内形成旋转气流的方案,分析了改进方案的优缺点及应注意的地方。计算结果表明:影响均热炉内气体流动方式的主要因素是烧嘴和烟道的布置,而钢锭的锭型和布置方式对总体流场影响不大。     

天津钢管公司总图设计

本文评述了天津钢管公司工厂厂址的优势，总结了总体布置的设计经验，并分析了短流程钢厂总平面布置的特点。     

选矿厂生产物流递阶智能控制系统功能分析与结构设计

在讨论选矿厂生产物流路线及设备布置的基础上 ,提出并分析了选矿厂生产物流控制系统的基本功能 ,采用复合式结构的Agent,并结合计算机网络技术 ,设计了选矿厂生产物流递阶智能控制系统的网络结构。     

国外的酸洗－冷连轧联接机组

介绍了国外酸洗－冷连轧联接机组的总体布置、机组的优越性和设备构成。结合武钢情况，叙述和分析了联接机组主要设备的特点和要求。     

横观各向同性岩体中位移反分析的测点优化布置

在地下工程中,位移监测已经成为掌握围岩动态变化的关键手段。而测量点的布置对位移反分析的唯一性和反分析精度都有很大的影响。基于最大位移原则,对横观各向同性岩体位移反分析中的测点优化布置问题进行了研究。研究了圆形巷道中位移随角度和半径的变化规律;分析了侧压力系数λ对位移变化规律的影响;获得了测点优化布置准则。研究结果表明,在较大主应力方向靠近硐壁的区域是最优的测点布置区域。     

高海拔地区冶金矿山企业总图设计若干问题的探讨

本文从工程实例出发,对高海拔地区冶金矿山总图设计中场地选择、总体布置、排土场等几个主要方面结合其场地特点予以论述与分析,提出了作者的见解,可供类似矿山设计参考。     

国外的酸洗—冷连轧联接机组

介绍了国外酸洗－冷连轧联接机组的总体布置、机组的优越性和设备构成。结合武钢情况，叙述和分析了联接机组主要设备的特点和要求。     

布置·物流·能耗

阐述了在企业建设和生产期间，工厂布置在技术上和经济上所处的重要位置，并提出了工厂布置获得最佳物流和最小能耗折主要措施。在市场经济体制下，必须由传统的静态设计改为动态设计，并阐明可以获得的效益。     

炼钢-连铸-热轧集成批量计划因素分析

炼钢－连铸－热轧的集成生产批量计划是集成生产计划（调度）的关键问题之一,在对炼钢－连铸－热轧的集成生产工艺和生产管理与伎冷装工艺及生产管理的对比分析基础上,对炼网－连铸－热轧的集成生产批量计划的问题特征进行了分析,为建立炼钢－连铸－热轧的集成生产批量计划的数学模型提供基础。     

The process of Retirement Planning Scale (PRePS): Development and validation.

Although a substantial proportion of the western population is approaching retirement age, little is known about how they are preparing for the future. Much attention has been paid to the consumption of educational material and retirement wealth in the present literature, but the process of retirement planning has been ignored. S. L. Friedman and E. K. Scholnick's (1997) theoretical model provided the basis for a comprehensive measure of retirement planning. According to their process theory, individuals develop an understanding of the problem, set goals, make a decision to start preparing, and finally undertake the behaviors needed to fulfill their goals. Fifty-two items were developed to assess each stage of the planning process for financial, health, lifestyle, and psychosocial retirement planning. These were tested on a population sample of 1,449 New Zealanders aged 49–60. Confirmatory factor analysis, bivariate correlations, and hierarchical regression provided support for the valid use of the measure. Necessary antecedents, such as the tendency to look to the future, and locus of control were significantly related to the Process of Retirement Planning Scale (PRePS). The PRePS also outperformed retirement planning measures used in the Health and Retirement Study (F. T. Juster & R. Suzman, 1995) after controlling for socioeconomic and psychological variables. This measure will enable social policy makers to determine which stages of retirement planning require support and intervention. The PRePS will also help to determine which domains of retirement planning predict well-being in later life and the factors which differentiate those who are planning from those who are not. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

连铸用耐火材料生产企业清洁生产实践

连铸用耐火材料生产企业经过筹划与组织、预评估、审核、方案的产生与筛选、可行性分析、方案实施、持续清洁生产等流程推行清洁生产,提高了资源利用效率,减少或避免生产、服务和产品使用过程中污染物的产生和排放,持续改进耐材行业长期以来能耗高、物耗高、粗放型经营状态,提升了企业员工对清洁生产理念的认识。     

起重机械焊接工艺评定标准分析及建议

通过对JGJ81-2002《建筑钢结构焊接技术规程》、JB4708-2000《钢制压力容器焊接工艺规程》《蒸汽锅炉安全技术监督规程》附录I等焊接工艺评定标准在起重机械制造过程中的应用,分析了各标准的差异对企业焊接工艺评定执行情况,建议尽快统一焊接工艺评定标准。     

Statistical Analysis on the Cost and Duration of Public Building Projects

A probabilistic model is proposed to predict the risk effects on time and cost of public building projects. The research goal is to utilize a real history data in estimating project cost and duration. The model results can be used to adjust floats and budgets of the planning schedule before project commencement. Statistical regression models and sample tests are developed using real data of 113 public projects. The model outputs can be used by project managers in the planning phase to validate the schedule critical path time and project budget. The comparison of means analysis for project cost and time performance indicated that the sample projects tend to finish over budget and almost on schedule. Regression models were developed to model project cost and time. The regression analysis showed that the project budgeted cost and planned project duration provide a good basis for estimating the cost and duration. The regression model results were validated by estimating the prediction error in percent and through conducting out-of-sample tests. In conclusion, the models were validated at a probability of 95%, at which the proposed models predict the project cost and duration at an error margin of ±0.035% of the actual cost and time.     

Simplified Performance Model of Gas Turbine Combined Cycle Systems

Conventional evaluation approaches for complex technologies, such as gas turbine systems, typically use process simulators for modeling, which are usually complicated and time-consuming. In order to facilitate policy analysis, a simplified desktop model for gas turbine systems based upon the air-standard Brayton cycle is developed in Microsoft EXCEL. The simplified model incorporates key process details and includes a comprehensive cost model. The model is calibrated based on a typical “Frame 7F” heavy duty gas turbine fired with natural gas and syngas. The model generally produces accurate and reasonable estimates for performance and cost comparable to reference data. The model responds appropriately to different syngas compositions, such as based on variation in moisture content and CO2 removal. Changes in syngas composition lead to different syngas heating values and thus affect gas turbine performance and cost. The effects of changes in inputs on key outputs are evaluated. Six key inputs are identified that are critical in order to obtain accurate estimates. The simplified model provides detailed technical information in a format that supports strategic planning and analysis.     

首钢ERP实施成功因素的实证分析

企业资源计划(ERP)作为因特网环境下管理集成、资源集成的信息系统,其实施是一项高风险和高成本的工作.企业资源计划(ERP)在国内企业信息化建设工作中举足轻重,对钢铁企业ERP实施及其成功因素进行实证分析,具有非常重要的现实意义和应用价值.给出的ERP实施的理论分析框架,研究了首钢ERP实施的成功经验及其上线压力测试情况,在此基础上给出了钢铁企业ERP实施的成功因素模型.     

Computer-Aided Site Layout Planning

This paper presents an interactive computer-aided site layout model to support site planning in a computer-aided design (CAD) environment and expands upon a model presented earlier by the writers. The developed model performs its task at two levels: Site representation, and site space analysis and allocation. The site representation is carried out using an open architecture supported by object-based concepts. The model offers three tiers of objects: (1) site objects, (2) construction objects, and (3) constraint objects. This structure facilitates the creation of new objects and reuse of domain knowledge, which allows for the gradual expansion and enrichment of the model’s knowledge base. At the space analysis and allocation level, the model introduces a geometric reasoning approach to analyze site space for finding an optimum or near-optimum location for facilities. This feature facilitates easy visualization of the site planning process and encourages user participation. The model is structured in three main modules: Database, Project Module, and Layout Control Module. The functionality of each module, along with their interconnectivity is described. The model is implemented using Visual Basic for Applications in AutoCAD environment and Microsoft Access. A numerical example of an actual site layout is presented to illustrate the functionality of the developed model.     

Improved SWOT Approach for Conducting Strategic Planning in the Construction Industry

Strength, weakness, opportunity, and threat (SWOT) analysis has been in use since the 1960s as a tool to assist strategic planning in various types of enterprises including those in the construction industry. While still widely used, the approach has called for improvements to make it more helpful in strategic management. The project described in this paper aimed to study whether the process to convert a SWOT analysis into a strategic plan could be assisted with some simple rationally quantitative model, as an augmented SWOT analysis. By using the mathematical approaches including the quantifying techniques, the “maximum subarray” method, and fuzzy mathematics, one or more heuristic rules (HRs) are derived from a SWOT analysis. These HRs bring into focus the most influential factors concerning a strategic planning situation, and thus inform strategic analysts where particular consideration should be given. A case study conducted in collaboration with a Chinese international construction company showed that the new SWOT approach is more helpful to strategic planners. The paper provides an augmented SWOT analysis approach for strategists to conduct strategic planning in the construction industry. It also contributes fresh insights into strategic planning by introducing rationally analytic processes to improve the SWOT analysis.     

Tool for Rural and Statewide Multimodal Transportation Planning

The Georgia Department of Transportation's Multi-modal Transportation Planning Tool (MTPT) facilitates multimodal planning in rural areas. Using open databases that are available agencywide, the tool can aid in the analysis of transportation requirements of rural areas, identify potential implementation constraints early in the planning process, and develop a prioritized project list by mode for an analysis region. The MTPT addresses highways, transit, intercity bus, commuter and passenger rail, aviation, and bicycles. An integrated geographic information system plays an important role in the presentation of the results. This paper discusses the development of the MTPT and describes program functionality. The paper will be of particular interest to state transportation agencies interested in using statewide databases for multimodal planning purposes. Described techniques identify how data that are typically collected and maintained for an entire state (e.g., traffic volumes, posted speeds, designated bike routes, roadway functional classes, crash information, and county-based socioeconomic data) can be combined with field verified default factors, widely accepted planning and analysis methods, and additional regionally calibrated planning algorithms to perform system-level planning at the city, county, multicounty, or state levels.