Stress Generation, Avoidance Coping, and Depressive Symptoms: A 10-Year Model.

This study examined (a) the role of avoidance coping in prospectively generating both chronic and acute life stressors and (b) the stress-generating role of avoidance coping as a prospective link to future depressive symptoms. Participants were 1,211 late-middle-aged individuals (500 women and 711 men) assessed 3 times over a 10-year period. As predicted, baseline avoidance coping was prospectively associated with both more chronic and more acute life stressors 4 years later. Furthermore, as predicted, these intervening life stressors linked baseline avoidance coping and depressive symptoms 10 years later, controlling for the influence of initial depressive symptoms. These findings broaden knowledge about the stress-generation process and elucidate a key mechanism through which avoidance coping is linked to depressive symptoms. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

韶冶硫酸系统干吸工序的改造与实践

介绍韶冶Ⅰ硫酸干吸工序技术改造和改造后运行情况．改造后提高了设备生产能力，降低了塔体阻力，改善了有关工艺指标控制，并进一步改善环保排放和节能降耗．     

中小型铝电解厂供电系统调度运行方式的探讨

公司2 0 0kA电解槽投产后,用电负荷增大,自备电厂负荷小,不能满足生产需求,由于所在地区电网薄弱,供电不稳定,特别是遇到发、供电设备检修和突发故障时,电流强度波动大,对电解槽生产影响较为严重。根据这种现状,经过长期运行实践,制定了不同设备检查及故障状态下35kV发、供电系统生产调度运行的最佳方式,保证了企业正常生产,提高了企业经济效益     

电源规划中的可靠性分析

采用解析法对电源规划中的可靠性进行了分析，为电源规划和检修安排提供了重要的参考依据，电源规划中的可靠性是对发电容量是否满足负荷需求进行判断。因此建立了相应的容量模型和负荷模型，当考虑检修计划时，利用减机组算法修改容量模型，由于互联系统支援可以大大提高系统的可靠性，考虑系统相互支援以及联络线容量，建立了等效支援系统模型，利用并联算法将容量模型、负荷模型，等效支援系统模型合并，形成最终的综合模型，从综合模型中可得到5个可靠性指标：电力不足概率LOLP（Lack of Load Probadility)，电力不足时间期望LOLE（Lack of Load Expectation)，电量不足期望值EENS（Energy Expectation Not Served)，电力不足频率LOLF（Lack of Load Frequency)，电力不足持续时间D（Duration)。根据解析法已编制程序，并投入了实际应用，应用中证明算法设计的合理性。     

Rough Terrain Autonomous Mobility—Part 1: A Theoretical Analysis of Requirements

A basic requirement of autonomous vehicles is that of guaranteeing the safety of the vehicle by avoiding hazardous situations. This paper analyses this requirement in general terms of real-time response, throughput, and the resolution and accuracy of sensors and computations. Several nondimensional expressions emerge which characterize requirements in canonical form.The automatic generation of dense geometric models for autonomously navigating vehicles is a computationally expensive process. Using first principles, it is possible to quantify the relationship between the raw throughput required of the perception system and the maximum safely achievable speed of the vehicle. We derive several useful expressions for the complexity of terrain mapping perception under various assumptions. All of them can be reduced to polynomials in the response distance.The significant time consumed by geometric perception degrades real-time response characteristics. Using our results, several strategies of active geometric perception arise which are practical for autonomous vehicles and increasingly important at higher speeds.     

我国发展风力发电的若干问题及对策

根据国内风力发电发展现状，研究分析了风电发展存在的若干问题和影响因素，提出相应的措施和对策。     

灰色系统理论中的三维数据序列

灰色系统理论应用中处理的数据大多是时间序列数据，序列中每一个数据点都可以看作是一维数轴上的一个点。在实际工程应用中，有大量的数据是二维和三维数据，论文就这些数据能否用灰色系统理论进行处理进行了一些尝试，定义了三维数据序列的概念，讨论了由空间数据点构成的三维数据序列的表达式以及累加生成方法，最后给出了一个采用GM(1，1)模型进行预测的三维数据应用实例。     

新型旋流风冷冷渣器

在研究国内外已有循环流化床锅炉冷渣器的基础上,提出新型冷渣器结构模型,通过冷渣器内部的流动传热分析及模拟计算表明,新型冷渣器具有结构简单、传热和体积效率高、气固比小的特点,可很好地满足循环流化床锅炉的应用要求。     

Challenges and R&D opportunities of smart distribution grids in China

In this paper, 5 investigations on the current states of power distribution grids in China have been introduced that cover the surveys of the practical distribution asset utilization, the simultaneity factor of feeder loading, the load compositions and characteristics, the urban reliability and the integration of distributed generations of renewable resources. Based on the survey results in the investigations, 12 Facts are clearly presented. It shows that the challenges to modernize the distribution grids in China are to improve the asset utilization rates, the electricity efficiencies and the reliability of distribution systems, as well as to integrate increasing amount of variable distributed renewable resources. Furthermore based on the challenges, 8 R&D opportunities have been identified.     

我国发电行业能效状况分析

发电行业在完成能源转换的同时,也是自身消耗能源较大的重点行业。文章简要介绍了我国发电行业的节能成绩和效益,分析了不同机组能效情况和主要技术经济指标,指出了“十一五”发电能效影响因素和节能目标,提出了主要技术政策措施建议。