10t"O"型龙门吊的改进与探索

本文介绍10t“0”型龙门吊通过静定车架结构代替传统的超静定结构的改进，其造型美观，受力合理，降低了精度要求，节省了大量的材料，降低了成本，使制造工艺更加方便，大大降低了金属结构的自重，改善了起重机的运行状态，延长了驱动车轮的寿命，故障率低，维修费用少。     

节俭在美国再度成为时尚

由于经济危机的影响，美国个人主义消费的时代已经结束，节俭成了新时尚。现今的美国人崇尚节俭，减少消费，比过去更具群体观念；但是，美国人也因此变得贫穷了，愤怒了，胆小了。     

大包耐火衬中的绝热层设计

在大包耐火衬的设计中增加一层绝热衬，结果在17个月的服役过程中，外壳温度平均降低50℃，提高了安全衬的紧密度，缩短了预热时间，减少了能耗，提高了大包利用率，改善了维护人员的工作环境。     

烟气分析动态控制炼钢技术的应用与改进

介绍了烟气分析动态炼钢系统的组成以及模型的工作原理。在应用过程中，根据国内转炉生产的现状，进一步完善了控制系统和模型，并通过对模型的改进和优化，提高了转炉终点碳温命中率，降低了造渣料消耗，减少了吹炼过程的喷溅，缩短了转炉冶炼周期，获得了较好的冶金效果。     

杭钢ERP系统的PM模块应用

随着企业的发展，实现企业信息化管理，提升管理水平，进一步挖掘企业的潜在能力，已成为企业的主要工作目标，杭钢2002年11月启动ERP信息工程，2004年2月顺利上线，运行ERP至现在，设备管理系统已经初步建成了全公司设备管理信息平台，基本实现了设备管理的物流、资金流、信息流三流合一，实现了整个集团公司设备系统的信息共享，实现了业务信息传递无纸化，提高了工作效率。     

新材料新技术在加热炉改造中的应用

使用新材料新技术，延长了加热炉和空气换热器的寿命，提高了作业率，减少了设备维修费用，节约了能源，增加了经济效益。     

坚持科学发展观提升企业竞争力

石横特钢坚持科学发展观，通过改革产权制度和企业内部运行机制，增强了企业活力。同时，通过科学决策、加强管理、防范风险，提高了企业整体素质，提升了企业竞争力，实现了企业快速发展。     

迁钢210 t钢包全程加盖工艺及实践

迁钢二炼钢厂自投入使用210 t钢包全程加盖技术及工艺后，取得了显著效果，平均出钢温度降低10 ℃，钢包热周转使用率长期保持在85%以上，取消了钢包在线烘烤，降低了煤气消耗，有效地保证了钢包洁净度，提高了钢包包衬寿命。实践生产运行表明，炼钢生产中钢包全程加盖工艺是一项节能、环保、降耗的先进技术，为迁钢二炼钢厂取得了显著的经济效益。但在一段时间内，该工艺运行稳定性较差，通过现场生产数据归纳分析，从中找出了影响钢包加、揭盖的因素，并制定了控制措施；同时，岗位要掌握其操作要点及主要设备，才能提高运行稳定性。     

气烧矩形石灰竖窑大修优化设计

天铁集团石灰石矿1#、2#气烧矩形竖窑由于长时间高效运行，脱落严重，进行了大修优化改进。优化改造中取消了排气十字架，对预热器和燃烧系统进行优化，改进了除尘工艺。优化改造后，产品质量提高了0．5％，竖窑利用系数提高了0．2t／m^3·d，除尘滤袋使用寿命由12个月提高到18个月，能耗降低，达到了预期效果。     

棒材连轧生产工艺最佳轧制节奏控制的研究

棒材厂投产后，随着设备的逐渐稳定，作业率在不断提高。但是仍有一个比较大的问题制约着棒材生产，那就是轧制节奏的问题。通过对加热炉、主轧线控制系统及相关设备的改进，实现了自动上钢、自动出钢，使出钢节奏与轧制节奏相吻合并达到了最佳匹配，缩短了间隙时间，减少TSL废，降低了工艺热停机时间，提高了机时产量，保证了生产的顺行。     

Slab-on-Grade versus Framed Slab

This paper presents comprehensive and practical engineering review (not mathematics or computer science paper) of the observed behavior of the two types of slabs that have been used for the bottom floor slabs, at grade and underground, of buildings in the United States and overseas. The typical design of the slab-on-grade (SOG) built in the United States is described. The design requires only nominal reinforcing steel, but modern day design also requires ground preparation and improvement as necessary, including underslab perforated drainage pipe network embedded in the granular subbase, riser pipes, and a series of pumps. Sealing at all slab isolation joints and waterproofing membrane or water barrier system are provided for water tightness. The framed slab is supported directly on the building framing and on the building foundation. The design can accommodate the soil and underground water pressure and in itself is watertight as the slab is cast monolithically with the structural walls and footings. The behavior of the SOG depends so much on the behavior (soil properties) of the soil strata on which the slab is resting on. It is sensitive to the variation of the soil conditions at and around building foundations, leading to uneven bumpy and cracked slab and leaking basement. These were demonstrated in the report of short- and long-term performances of various projects in Thailand and United States in the past 25 years. The paper refers to various analysis and design techniques that may be used to improve the design of both the SOG and the framed slab for serviceability and economy. It is concluded that both types of slabs may be selected to suit the functions and serviceability requirements of the buildings. The SOG requires less concrete and reinforcement than those for the framed slab counterpart, but when all other factors are considered including additional underslab drainage and pump system, operating, and long-term performance and maintenance, the overall costs of both slabs may not be far apart, yet the performance and integrity of the framed slab will certainly be superior.     

Relationship of hardiness and religiousness to depression and anger.

Both hardiness and religiousness share spirituality, in the sense of searching for meaning in one's life, and have been shown to have a buffering effect on stresses that maintains and enhances performance, morale, and health. This study investigates how hardiness and religiousness compare in their relationship to depression, anger, and the coping and social support mechanisms whereby they may have these relationships. Participants were military and governmental personnel who completed accepted measures of hardiness, religiousness, and other variables on a volunteer basis. Correlational and multiple regression analyses showed that, by comparison with religiousness, hardiness has the larger and more comprehensive negative relationship with depression and anger, and positive relationship with coping and social support. The conceptual and empirical implications of these findings are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

炼铁生产管理系统的开发与实践

介绍了天铁炼铁生产管理系统开发的情况,该系统采用ERP、MeS、PcS三层之间的数据集成,实现了炼铁生产物料跟踪,生产计划和配料管理及动态调整。提高了炼铁生产效率和铁水质量,降低了原、燃料消耗,达到炼铁生产管控一体化与生产过程优化。     

Static and Dynamic Data Reconciliation for an Irrigation Canal

This paper deals with the problem of fault detection and isolation in irrigation canals. We have developed a method which combines static and dynamic data reconciliation for the validation of measurements, detection, and isolation of sensors and actuator faults and reconstruction of missing data. Static data reconciliation uses static models at a regulation gate to validate measurements and detect sensor and actuator faults. It also enabled us to detect a drift in the stage discharge rating curve. The dynamic data reconciliation uses additional measurements and a dynamic model of the canal in order to validate measurements and detect faults and withdrawals. The combination of the two methods allowed us to distinguish between withdrawals and faults. Both methods are evaluated on measurements from a real irrigation canal located in the South of France.     

Formation and Evolution of the Jiuduansha Shoal over the Past 50 Years

The formation and geomorphic evolution of the Jiuduansha Shoal are investigated over the past 50 years in this paper. The sedimentary processes, formation, and geomorphic evolution of the Jiuduansha Shoal in the Yangtze River Estuary, eastern China, are analyzed based on digitized sea maps from 1945 to 2001, satellite images from 1975 to 2001, and field survey data in the spring-neap tidal cycle in the dry and flood seasons in 2003. The suspended sediment concentration and hydrodynamics of the North Passage and South Passage during the dry and flood seasons in the spring-neap tidal cycle in 2003 were investigated, and relations between the North Passage and South Passage of the Jiuduansha Shoal are analyzed. Results show that seasonal and spring-neap tidal cycle variations in sediment and water discharge from the drainage basin correspond to erosion and deposition on the Jiuduansha Shoal. The results and data can provide useful information for the management of the Yangtze River Estuary and restoration of the estuarine tidal flat ecology.     

天铁铁路运输调度指挥系统的设计

天铁集团运输部由于调度作业是手工作业,效率低,差错率高,在企业扩大生产过程中遇到了调度组织的困难。根据自己的实际情况,利用计算机和信息化手段,设计了铁路运输调度指挥系统,实时动态掌握现场作业,改变作业及管理方式,显著提高了作业效率,满足了生产要求。     

表面高硬度和耐腐蚀性高强贝氏体钢制备新工艺

 铁路运输和工程机械等领域对贝氏体钢的耐磨性和耐腐蚀性具有较高的要求,而表面渗硼、渗铬处理是常见的提高表面硬度和耐腐蚀性的有效方法。在已有的研究工作中,获得贝氏体基体的等温淬火热处理和表面改性处理是分开进行的,工序复杂且生产成本增加。提出制备表面高硬度、高耐腐蚀性中碳高强度贝氏体钢的新工艺,将表面改性处理和贝氏体等温淬火工艺一体化,既可以简化制备工艺,又降低了生产成本、减少了环境污染。采用渗硼/铬-等温淬火一体化新工艺制备表面高硬度、高耐腐蚀性中碳高强贝氏体钢,通过组织观察、硬度测试和腐蚀试验等,对比分析了渗硼-等温淬火和渗铬-等温淬火一体化工艺对中碳高强贝氏体钢组织和性能的影响。结果表明,与仅经过等温淬火工艺处理相比,渗硼/铬-等温淬火一体化工艺处理后,贝氏体钢表面均形成了维氏硬度超过1 500HV的渗层(约为贝氏体基体硬度的3.3倍),且在0.5%NaCl溶液中的腐蚀性能明显提高。暴露在0.5%NaCl溶液中3 h后,渗硼层表现出更好的耐腐蚀性能。两种一体化工艺均可制备表面渗层、基体以贝氏体相为主的新型高强贝氏体钢,在相同处理时间下,与渗铬-等温淬火一体化工艺相比,渗硼-等温淬火一体化工艺处理的渗层生长速率快,且渗硼层与贝氏体钢基体的结合强度更高。     

Intelligent Adaptive Cyber-Physical Ecosystem for Aerospace Engineering Education, Training, and Accelerated Workforce Development

Transformative changes are on the horizon in aerospace engineering education and learning in general. These changes are attributable, in part, to the developments of a number of aerospace, learning and other leading-edge technologies and their synergistic combinations and convergence. The related technologies include ubiquitous, cloud, and petascale/exascale computing; ultrahigh-bandwidth networks; pervasive wireless communication; intelligent autonomous robotics; artificial general intelligence; powerful game engines and facilities; networked immersive virtual environments and virtual worlds; augmented and enhanced reality; and novel human-technology interfaces. This paper describes some of the frontiers of, and challenges in, future aerospace systems and the drivers for transformative changes in aerospace engineering education. The need to have a holistic perspective and a comprehensive approach for aerospace education, research, training, and accelerated workforce development is outlined. A starting point to accomplish this task is the development of an intelligent adaptive cyber-physical ecosystem for the aerospace workforce. The continuously expanding major components of the ecosystem include integrated knowledge discovery and exploitation facilities; novel agent-supported visual simulations (with cognitive learning and understanding abilities); immersive three-dimensional (3D) virtual world facilities; intelligent, multimodal and humanlike interfaces; and smart mobile wireless devices. The ecosystem will provide timely, engaging, personalized/collaborative, and tailored visual learning. It will stimulate creativity and innovation and prepare the learners to work in future global virtual collaborative enterprises and become leaders in a world of growing complexity.     

中国高炉炼铁技术装备发展成就与展望

 近40年来，我国钢铁工业取得了巨大进步，钢铁产量连续多年居世界第一。我国高炉炼铁技术装备在大型化、现代化、高效化、长寿化等方面发展成就显著。2000年以来，一批5000m3以上特大型高炉、500m2以上大型烧结机、7.63m超大容积焦炉和年产400万t/a以上大型球团生产线相继建成投产，一系列自主研发、集成创新的炼铁关键技术在生产实践中取得重大应用成效。在技术装备大型化的同时，高炉富氧喷煤、无料钟炉顶、煤气干法除尘、顶燃式热风炉及高风温、高效低耗烧结技术、大型清洁炼焦技术等先进技术及其装备研发与应用成效显著，有力推动了炼铁技术装备进步。到本世纪中叶，我国钢铁工业格局和流程结构将发生重大变革，减量化、绿色化、智能化、高效化将是未来一个时期炼铁技术装备的主要发展趋势。     

SQL优化技术及应用

随着信息化进程的加快,管理工作的逐步细化,SQL的优化直接影响着系统的运行状态和速度。根据软件设计开发过程中数据库设计和程序开发的技术和经验,通过实例总结了数据库访问SQL优化的方法和技巧,及在项目中的应用。通过优化,提高了系统运行速度,减少了系统故障,用户反馈良好。