位置控制器与通用变频器APC系统

在每一周期的开始时的速度值V1预设定到传动装置上进行速度预控制，同时，反馈回来的实际值Sj与S1进行比较计算，得出当时偏差值△S，此偏差值△S乘以比例系数Ksp，得到Vk叠加在Vt上，得出传动装置应具有的速度控制信号V，然后V经速度／电压变换和D／A转换向传动系统的速度控制发出控制信号Uα控制执行机构的定位。调节Ksp的值使系统无超调无振荡。     

武钢 10000 m3/h制氧机主冷泄漏故障处理及应急保产方式

氧气生产单位保用户用气一旦出现较为紧张的局面时，如何正确处理保安全生产运行、保用户生产、安排抢修时间三者之间的关系，值得关注与研究。     

天铁热力厂4#锅炉电气自动化控制系统

介绍了热力厂4^#锅炉电气系统与微机联络控制的方式。系统分别采用变频器485接口式电动机保护测控单元或接触器与微机连接，实现4^#锅炉电气控制过程。     

Risk Factors for Course of Posttraumatic Stress Disorder Among Vietnam Veterans: A 14-Year Follow-Up of American Legionnaires.

Risk factors affecting the course of posttraumatic stress disorder (PTSD) are poorly understood. As part of a larger study on characterizing exposure to herbicides in Vietnam, the authors investigated this issue in a random sample of 1,377 American Legionnaires who had served in Southeast Asia during the Vietnam War and were followed over a 14-year period. High combat exposure, perceived negative community attitudes at homecoming, minority race, depression symptoms at Time 1, and more anger at Time 1 predicted a more chronic course. Community involvement at Time 1 was protective and associated with decreased risk at Time 2. Discomfort in disclosing Vietnam experiences was associated with an increased risk for developing PTSD but did not predict its course. Combat exposure predicted PTSD course more strongly than any other risk factor. Findings suggest recovery from PTSD is significantly influenced by perceived social support. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

水热合成纳米氧化锡粉体工艺因素研究

以SnCl4·5H2O和氨水为原料,通过正交实验并借助于XRD、TEM等手段,研究了前驱物浓度、反应温度、保温时间和氨水滴加速率等工艺因素对水热合成纳米SnO2粉体的影响。     

浅谈转制科研单位的内部会计控制

针对目前大多数科研单位在内部会计控制中存在的问题，探讨了科研单位在转制过程中应如何建立和完善内部会计控制制度，以达到防范经营风险，保护资产安全、完整，促进单位经营管理目标和政策有效实施。     

A Profile of Psychologists' Views of Critical Risk Factors for Completed Suicide in Older Adults.

The ability to accurately and reliably predict whether an older adult will commit suicide has eluded clinicians and researchers. A random national sample of psychologists who work with older adults was surveyed regarding their perception of 36 risk factors for completed suicide and indirect self-destructive behavior in older adults. This study produced a profile of psychologists' assessment and treatment practices when working with suicidal older adults. Determining what psychologists consider to be the most salient risk factors for completed suicide is important in identifying a minimum standard that clinicians should follow when assessing older adults. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

76 mm口径EFP成形过程数值模拟及影响因素研究

采用LS-DYNA3D对76mm口径药型罩爆炸成型弹丸(EFP)的成形过程进行了数值模拟，模拟结果与实验数据基本吻合．通过数值模拟着重分析了装药长径比L／D、壳体厚度、药型罩壁厚对EFP速度的影响规律，得到了有关EFP成形速度公式，得出EFP速度随L／D的增大而增大，随药型罩厚度增大而减小，受装药外壳厚度影响不大．     

PC作为Profibus-DP单主站的实现

主要介绍Profibus现场总线的基本特性和通信协议，讨论了以PC作为Profibus—DP单主站实现的可行性，并给出了C语言实现的程序。     

Parental Problem Drinking and Children's Adjustment: Attachment and Family Functioning as Moderators and Mediators of Risk.

Children's perceived attachments with parents, and family cohesion and adaptability were examined as predictors, mediators, and moderators in the parental problem drinking-child outcomes link. A total of 216 6- to 12-year-olds (110 boys, 106 girls) participated. Data were obtained from children and their mothers, fathers, and teachers. A higher level of family cohesion and adaptability functioned as (a) a robust protective factor against adjustment and cognitive difficulties otherwise associated with problem drinking and (b) a mediator of adjustment problems. Children's perceptions of attachments to mothers and fathers were consistent predictors of behavioral, social, and cognitive problems and further moderated relations between problem drinking and child functioning. The results support that child-parent and family functioning variables act as either pathways and/or vulnerability and protective factors for children exposed to a high-risk environment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)