基于无线专网的露天矿山车辆调度系统设计

随着智能化采矿技术迅猛发展,矿山智能化水平不断提升,传统露天矿山车辆调度系统已无法满足现代矿山智能化建设需要,新一代基于无线专网的露天矿山车辆智能调度系统应具备更加强大的无线通讯能力,智能化程度更高的车载终端与中心调度系统,能够适应矿山智能化建设需要,实现采矿管理的信息化、自动化与高效率。     

冶金长流程铁钢区智能调度设计与应用

为实现铁钢区生产管控柔性衔接,精准控制生产节奏,设计了铁钢区智能调度设计方案。充分利用信息技术手段以及优化模型算法,以铁钢区动态调度系统为中心,将炼铁MES系统、铁运系统、炼钢MES系统、铁钢包管理系统、天车系统、钢区二级系统进行深度集成,使铁钢调度执行过程智能化、可视化,为调度决策提供准确信息,最终实现新一代冶金长流程生产铁钢区智能调度。     

济钢铁路物流信息系统的研究

分析了冶金企业铁路运输的特点，阐述了铁路物流信息系统包含的货物车辆实时跟踪管理、信号微机连锁综合控制、车号自动识别、调度计划信息无线传输、调度大屏幕显示及电视监控等子系统的内容，介绍了该物流系统的实施方案。     

首钢京唐钢铁公司无人值守物资计量系统

无人值守物资计量系统于2009年在首钢京唐钢铁联合有限责任公司应用,系统采用RFID、物联网、可编程计算机控制器(PCC)等关键技术和设备,实现了车号智能识别、数据远程采集、计量过程远程监控、设备远程控制和智能化协作,达到了节员增效和对计量员集中管理的目的,同时避免了现场计量的种种弊端和漏洞,加快了物资信息传递速度,规范了计量业务流程,提高了公司的物流速度和管理水平。     

河钢宣钢智慧环保系统建设与应用

介绍了河钢宣钢采用编程及通讯交互技术,在原有网络、信息化、自动化体系基础上,通过全覆盖环保数据采集系统、环保在线监控调度指挥系统、环保信息移动发布系统建设了智能环保系统,形成了多维度、多层次的环保智能化、一体化管控体系.该系统实现了全公司重点环保监测区域参数的实时采集、传输和处理,有助于提高河钢宣钢的环保管理工作水平,...     

大型钢企智能天车系统的设计开发及应用

介绍全国首家智能天车系统的总体架构和基本功能,并对具体应用进行解析和效果对比。针对冶金智能物流体系和企业需求,综合冶金物流管理、天车调度控制、自动控制和信息化技术,智能天车系统设计为3层架构,分步骤实现工艺流程信息化、工单配给智能化、天车运行自动化和物流现场无人化。系统的研发应用实现了冶金生产与物流无缝衔接,保证了生产信息和物流信息同步、不落地,夯实了冶金智能物流体系的基础,体现了智能工厂的核心理念,是智能制造技术在传统制造业中的具体应用。     

铁运调度计划自动执行系统的设计与实现

<正>柳钢原、燃料和钢材成品的运输高度依赖于铁路,钢轨遍布厂区内部,成多股道、多岔口的铁路网布局。如何高效的管理和监控车皮进出厂区已经成为铁路运输部门的一大研究课题,而运输计划的高质量执行是有效管控厂区铁路运输的有效途径之一。为提高厂区铁路运输调度监控效率,减少铁运调度中心劳动强度,柳钢组织设计和开发了铁运调度计划自动执行系统并上线运行,本文作总结。     

钢铁智能仓储系统的研究

本文主要介绍了基于物联网的钢铁智能仓储系统的设计与应用。基于无线数传、激光定位、物联网等技术,进行行车定位系统、行车调度系统、库管系统等软硬件的开发与应用,从而实现对钢铁制品物流的全流程智能跟踪与信息集成,完成物料从下线到出库的动态闭环管理,有效提升钢铁企业物流管理的智能化水平。     

云服务模式下露天矿智能调度系统应用研究

为合理调配露天矿运输作业,智能调度管理车辆,实现大数据智能决策分析,以大数据技术为支撑,JavaWeb为开发方式,设计了一种云服务模式下的露天矿智能调度系统。该系统采用GPS、Google Map、RFID等前沿技术来实现各种生产信息的传输与展现,在监控车辆位置轨迹的基础之上,通过车辆信息反馈,给出调度决策依据,合理动态的调配车辆运行。自动化完成生产的精细化配矿和车辆的计量统计,实现信息化、智能化、自动化的露天矿智能生产。现场结果表明:该系统运行稳定,反映速度快,调度决策准确,数据可视化精确,使设备作业效率提高了13.29%,品位波动降低了11.47%,创经济效益约2.72亿元,是露天矿智能生产的全新模式。     

自动化技术在露天金属矿山的应用实践

随着我国科技的不断进步,信息化技术在矿山生产中得到广泛应用,为提高露天矿山生产效率和智能化水平提供了基础保障。露天矿山自动化技术是近年来在我国兴起的一种全新的矿山开采方式,主要是通过对设备和信息资源进行整合、处理和应用,以实现露天矿山生产效率和智能化水平的提升。本文在对我国露天矿山自动化技术发展现状进行分析的基础上,从GPS卡车智能调度系统、配电室无人值守、皮带输送机无人值守、研磨自动化系统、浮选过程自动控制系统方面探讨了自动化技术在露天矿山中的应用实践,以期为我国露天矿山自动化技术应用提供有益借鉴。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.