曲柄群驱动机构连杆断裂研究

针对曲柄群驱动机构实验台连杆桁架中连杆断裂现象,进行受力分析并针对问题提出可调杆件的设计方案。应 用压杆稳定性理论和ANSYS有限元软件对比分析了断裂连杆的临界应力,结果表明结构设计不当造成连杆断裂。最后 优化设计方案,将连杆设计为可调形式的连杆并应用于试验台中,对杆件进行的变形分析验证了优化设计的合理性。     

多孔介质中油气体系相平衡规律研究

油气体系和储层多孔介质是一个相互作用的系统,当地层压力低于饱和压力时,储层中同时存在气、液、固(指岩石) 三相。在多孔介质中,由于孔隙半径小,因而毛细管压力应予以考虑。在建立了考虑毛细管压力的相平衡计算模型之后,针对二个凝析气藏,一个黑油油藏和一个挥发油藏,分别对其油气体系的毛细管压力、饱和压力和恒组成膨胀过程中液相含量进行了相态模拟计算,并总结出毛细管压力对油气体系相平衡的影响规律。     

高校思想政治理论课教学中的 “化理论为方法、化理论为德性”再探索

为确保高校思想政治理论课程的教学质量,教师除了将马克思主义理论外化为思维方法、内化为自己的德性外,还应当做好以下工作：首先,创新高校思想政治理论课教师实现“两化”的教学模式或手段。其一,采取真正的专题讲授教学模式;其二,以微课、虚拟仿真实践课等补充课堂教学。其次,制定高校思想政治理论课教师实现“两化”的绩效考核体系。其一,确立多元的绩效考核主体;其二,拟定合理的绩效考核要素;其三,推行追踪的绩效考核形式。再次,建立高校思想政治理论课教师实现“两化”的保障机制。其一,严把入口关,确保高校思想政治理论课教师队伍的政治素质;其二,评优奖优,以榜样的力量激励高校广大思想政治理论课教师传道授业;其三,守住高压线,以零容忍的态度处理思想政治理论课教师违背师德师风的行为。     

企业绿色创新战略的驱动因素： 多案例比较研究

企业绿色创新战略是应对当前生态环境日益恶化的重要途径。加强对企业的引导和管制，促进企业转向绿色生产方式已成为一个亟待解决的重大课题。通过深度访谈，应用扎根理论研究影响企业实施绿色创新战略的深层次因素后发现，预期经济收益、冗余资源和利益相关者压力等三个主范畴对绿色创新战略存在显著影响。预期经济收益是前置变量，冗余资源是内部情境变量，利益相关者压力是外部情境变量，但它们影响绿色创新战略的方式和路径并不一致。研究结论可为政府在转变企业经营模式上制定有效的管制政策提供政策建议和实施路径。     

换热站节能改造技术研究

对传统换热站的工作结构进行了简单分析，提出其存在的问题。针对这些问题进行节能技术改造，主要采用了两种技术措施：热用户侧供水温度气候补偿的优化调节,实现按需供热；依据室内采暖系统最佳循环流量确定最佳控制压差值，循环水泵进行变频调节，实现热用户侧的变流量运行。     

圆管分层层流的流动规律

从流体力学中NOS 方程出发,建立了圆管两相分层层流流动的数学模型。通过两相分层层流的相互作用的流体力学分析,提出了两相流动界面的耦合条件,从而得到了一组完整描述两相圆管分层流的数学方程,再通过数值求解分层流的数学方程,得到了对工程实际应用有重要价值的流动规律。应用圆管两相分层层流的流动规律,可以实现高粘流体的高效率输送, ,其节能效果十分明显。     

Individual differences in the perception of occupational stress and their association with blood pressure status

Abstract

Casual blood pressure (BP) was recorded in a sample of 217 working adults. A questionnaire was used to obtain subjective reports of job stress. comparisons were made between a group with elevated BP and a normotensive group. The high BP group appeared to perceive more stress. In particular, scores on the role conflict, job versus non-job conflict and type A scales reliably differentiated the groups. In contrast, for the job satisfaction items, no difference between the groups was observed. There appeared to be some association between reported occupational stress and BP level.     

Implications of work pressure and supervisor support for fathers’, mothers’ and adolescents’ relationships and well-being in dual-earner families

The present study investigates the implications of work pressure and supervisor support for individual psychosocial functioning, marital and parent–adolescent relationships. We examined the effects of work pressure and supervisor support separately for mothers and fathers and their adolescent children (M=17.33 years) in 156 white working- and middle-class, dual-earner families. Results revealed when husbands reported high work pressure and low supervisor support, both parents reported higher levels of depressive symptoms. When wives were in the high pressure/low support group, they reported lower levels of marital love, and both spouses reported less marital satisfaction. When either parent was in the high pressure/low support group, both parents reported higher levels of role overload, and families experienced more conflict and less intimacy in their relationships with their children. Their children also reported higher levels of depressive symptoms. Results associated with parent and child depressive symptoms, however, varied by parent and child sex.     

我国的就业压力与对策

对我国现阶段的就业压力及其形成原因进行了分析 ,并就如何缓解就业压力提出了加快经济发展 ,拓宽就业领域 ;重视培育、完善劳动力市场 ,促进劳动力资源的优化配置和引导就业、待业人员切实转变就业、择业观念等几点建议