某金矿充填系统优化改造

利用某金矿现有场地及设备设施,通过合理规划施工方案,优化施工顺序,将原有卧式充填站优化改造为立式充填站,解决了原来充填站设备陈旧、工艺落后、充填料浆质量没有保障及采充不平衡等问题。充填系统优化改造后,取得了以下方面的显著效果：（1）新充填站储砂量大,造浆效果好,使得金矿生产能力得到明显提升;（2）系统自动化程度高,操作简单,减少了劳动力;（3）新系统运行稳定,设备操作可控,静动态计量准确,料浆浓度稳定;（4）充填成本明显降低,提高了企业经济效益。实践运行证实,该充填系统改造投资少,见效好,值得同类矿山借鉴。     

高炉炉前设备的无线遥控

为进一步提高3200m3高炉出铁场设备的控制精度和生产效率,降低生产成本,将原有的现场操作站控制系统改造为工业无线遥控控制系统。通过对原操作站操作方式缺点的研究,在无线遥控操作方式上进行了针对性的改正。详细地介绍了工业无线遥控系统的优势。通过实际生产的检验,该系统控制情况良好,操作易上手,安全可靠,达到了预期效果。     

HC轧机轧制规程设定系统的改造

简述了HC轧机钢卷轧制规程设定系统的改造,介绍了FIX编程软件在建立操作站方面的应用,投入运行后,效果较好.对类似的系统设计具有一定的参考价值.     

氢气站仪表控制系统升级改造

分析了原氢气站仪表控制系统存在的问题。采取的措施是:从控制系统软件、控制系统硬件、连线与接地等几个方面进行升级改造。改造后取得了良好的效果。     

凌钢中宽带轧线操作站的改造

在保持AB公司硬件产品不变的情况下，主要对操作站的硬件和软件进行改造，实现了省时、省投资的目标，并实现了升级的目的。     

煤气加压站系统研究与优化

热电厂煤气加压站经过系统优化改造后，设备运行可靠，操作方便，满足了生产工艺要求，实现了变频调速，消除了煤气的泄漏现象，达到了节电，节油，节约维修费用的目的，经济效益可观。     

不锈钢立式板坯连铸机控制系统优化

介绍了立式板坯连铸机控制系统的网络改造及操作站数据流优化设计思想、改进的动态跟踪功能及系统特点。     

八钢2~#高炉专家系统的设计

介绍了八钢炼铁厂2#高炉扩容改造后,运用计算机高新技术,建成“炼铁优化专家系统”,实现了用“第三代高炉操作技术”装备高炉。在计算机硬件装备方面,由采集站、操作站和优化站组成的局域网构成了高炉工长使用的计算机系统。“专家系统”软件不仅包括完备的工长作业数据库,实现生产原始数据资源的计算机管理和共享,而且包括炉温的数值预报——趋势预报和平稳时间序列控制;冶炼强度的优化决策与工艺参数的系统优化;配料优化计算和各类管理报表统计;时间序列分析和统计对比分析等一系列高炉作业必须完成的工作、工艺计算、技术与管理功能。     

宝钢一炼焦三电改造中三分割技术的应用

宝钢一炼焦三电改造后期,发现控制站和操作站的响应速度不能达到要求.经过分析,决定对网络进行三分割.文章从三分割的原理、三分割技术在改造过程的应用,介绍了三分割如何实现网络通信速度的提高,解决实时响应速度太慢的问题.     

3号柜煤气混合加压控制系统改造

杭钢3号柜煤气加压站控制系统于2007年进行了改造,着重介绍改造后混合煤气热值控制系统思路和优点,有效实现了混合煤气热值和压力的控制。     

Searching in the Center: Pigeons (Columba livid) Encode Relative Distance From Walls of an Enclosure.

Pigeons (Columba livia) searched for food hidden in the center of a square enclosure. On occasional tests without food, the enclosure was (a) unchanged from training (control tests), (b) moved to different corners of the testing room (corner tests), or (c) doubled in size (expansion tests). The birds showed localized search in the center of the enclosure on control and corner tests. On expansion tests, some birds searched near the center of the enclosure, suggesting relative-distance encoding. Other birds searched at locations that maintained the training distance from walls, suggesting absolute-distance encoding. These results are consistent with previous studies on chicks (Gallus gallus) in similar enclosures and contrast with previous results on pigeons' responses to expansions of discrete landmark arrays. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

采用DH485网络的渣浆泵变频调速系统

给出一种采用A-B变频器驱动的渣浆泵调速系统。机旁、主控制室、配电室各设1台可编程序控制器．连成DH185网控制变频器的运转．简化了异地操作。在渣浆流量调节中应用了先进的二自由度PID控制算法。新系统投入运行后，性能优越、节能效果明显。     

轧钢主电室空调设计方案的改进

介绍了轧钢厂电气控制室空调冷水系统、风系统及风管布置；根据电气室工艺要求特点，确定合理方案。新方案的运行结果表明该方案合理可靠，运行效果良好。     

浅析智能小区室外弱电工程的几个问题

针对智能住宅区室外弱电工程的特点,分析了合理选择中心机房位置、合理规划交接配线区以及合理进行线缆敷设等智能小区室外弱电设计的几个问题,从而真正实现智能小区的智能化、信息化、网络化。     

Citalopram in premenstrual dysphoria: is intermittent treatment during luteal phases more effective than continuous medication throughout the menstrual cycle?

This article describes a barrier-free burn center that is accessible to persons with disabilities and that complies with Title III of the Americans with Disabilities Act. The burn center has 3 separate components: patient rooms, patient support facilities, and staff support facilities. Thirteen rooms are used to care for 16 patients. Two of the 13 rooms are accessible to people with disabilities. These 2 rooms have wide doors that permit a wheelchair to pass through, and they have enough clear floor space for a wheelchair to make a 180 degrees turn. The rooms have a sink that is accessible from a wheelchair. The bathrooms have large, clear floor spaces that allow for the turning of a wheelchair, elevated toilets, grab bars, and showers that permit wheelchair access. Special wheelchairs that provide easier shower and commode access are available. The patient support services feature a large hydrotherapy room that contains a table-shower system that allows a person in a wheelchair to gain access to both sides of the shower table. A tub room has been constructed to provide compact patient bathing and hydromassage, and it is also accessible to people in wheelchairs. The staff support services include a locker room that has a shower accessible to people with disabilities so that staff members with mobility disorders can work in the burn center. Grade II braille writing marks all of the signs that designate the permanent rooms and spacing in the burn center and in the contiguous common use areas. The common use area has a restroom accessible to people with disabilities and a waiting room with a telephone communications system for people with mobility disorders or mobility impairment.     

Flow structure versus retinal location in the optical control of stance.

Four experiments, with 54 observers, examined the importance of the retinal center and periphery in the pickup of optical information for controlling stance as a function of the dynamic geometrical structure of the optical flow. All experiments were performed in a moving room so that the magnitude of compensatory sway in response to room movements could be measured. Exps I and II found stronger sway response to flow having a largely lamellar structure that was presented to the retinal periphery than to more radially structured flow in the center. In Exp III, Ss turned their heads to face the right wall of the room, placing radial flow in the periphery and lamellar flow in the center of the visual field. Radical flow presented to the retinal periphery induced no compensatory sway, while lamellar flow in the center of the retina produced some sway. Results of Exp IV indicate that unilateral exposures of lamellar optical flow to the retinal periphery produced almost as much sway as did bilateral exposures. Findings indicate that flow structure interacts with the exposed retinal area in controlling stance. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

供热中心自动化设计

介绍了供热中心电气控制系统的功能及控制方法。该自动控制系统采用了变频调速等新技术,节约了能源,提高了效益,系统运行稳定可靠。     

The diminution of experience: Epistemology's effect on practical knowledge.

Contends that the adoption of G. Bateson's (1979) epistemology in family therapy would have the effect of diminishing the therapist's experience of families. Two unwelcome prospects are suggested: (1) A change in the locus of experience from the family in the room to a system of knowledge ostensibly underneath could result in a dogmatic approach to families and therapy. (2) A practical knowledge can be transformed into technical knowledge, resulting in a new language of therapy. It is suggested that the metaphor should be moved from the center of the therapeutic process to the periphery and utilized to question and enrich practical knowledge and experience. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Public health nurse staffing requirements for health examination of infants and children in municipalities of Japan

PURPOSE: Little is known about the impact of school-based primary care on adolescents' use of hospital and emergency room care. METHODS: Students (grades 6-12) in nine Baltimore schools with school-based health centers and four schools without health centers were surveyed in May 1991 using an anonymous classroom questionnaire. Self-reported use of primary care services and emergency rooms and hospitalization were examined over the academic year. Logistic regression was used to assess factors influencing use of health care including the presence of a school health center. RESULTS: Students (n = 3,258) in health center schools and comparison schools reported similar rates of chronic health conditions. Students from schools with health centers were more likely to report seeing a social worker or counselor and more likely to report the use of certain health services in the past 4 years. Self-reported emergency room use (38%) and hospitalization (19%) were common. Students in schools with health centers were less likely to report hospitalization (OR = 0.80, 95% CI = 0.66-0.98). Emergency room use was also lower but only for students attending the school with a health center for more than 1 year (OR = 0.78, 95% CI = 0.62-0.99). Significant predictors of hospital care included reporting one or more chronic health condition, having health insurance, being of African-American race, or older age, and lower grade. CONCLUSIONS: Access to school-based, primary health care for adolescents was associated with increased use of primary care, reduced use of emergency rooms, and fewer hospitalizations. These findings have implications for both access to primary care and funding of school-based primary care.     

Reductions in hospital use from self management training for chronic asthmatics

The purpose of this study was to assess the impact of asthma Self Management Training on the health status and resource use of patients with chronic asthma. The study consisted of a randomized control design of chronic asthmatic patients in a tertiary care center in India. The intervention group (153 patients) received four training sessions in addition to the regular care provided to the control group (150 patients). Health status and resource use were measured at baseline and over a one year follow-up period. The intervention group had significantly better health status (measured by breathing ability), fewer productive days lost, and lower resource use (hospitalizations and emergency room visits) than the control group. Total annual costs (direct and indirect) were also lower, though physician costs were not included in the assessment. Therefore, incorporation of asthma Self Management Training as part of clinical management of asthma can result in improvements in health status and reductions in hospital use.