研究生的学习状况及其影响因素探究——基于某省教育学研究生学习倦怠状况的调查与分析

教育学研究生普遍存在着相当程度的学习倦怠。导师指导、学习认知、学术科研活动参与状况、学习压力和挫折、年龄、工作经历以及身体健康状况与研究生学习倦怠的关系密切。从根本上改善研究生的学习状况,需要多方面协调一致、相互配合、共同努力。     

A numerical study on parametric sensitivity of the flow characteristics on pulverized coal gasification

In order to analyse the sensitivity on pulverized coal flames of variables such as initial turbulent intensity, steam addition, primary/secondary momentum ratio, and radiation heat transfer, a numerical study was conducted at the gasification process. Eulerian approach is used for the gas phase, whereas Lagrangian approach is used for the solid phase. Turbulence is modeled using the standard k–ϵ model. The turbulent combustion model incorporates the eddy dissipation model. The radiation heat transfer is solved using a Monte‐Carlo method. One‐step two‐reaction model is employed for the devolatilization of a Kideco coal. In pulverized flame of long liftoff height, the initial turbulent intensity is an important factor to predict the accurate flame front position. The radiation heat transfer and wall heat loss ratio distort the temperature distributions along the reactor wall, but do not affect the reactor performance such as coal burnout, residence time and flame front position. The primary/secondary momentum ratio only affects the position of flame front, but the coal burnout is slightly influenced. It is confirmed that the momentum ratio is a variable only associated with the flame stabilization. The addition of steam in the reactor has a detrimental effect on all the aspects, particularly in reactor temperature and coal burnout. The increase of liftoff height and dropped gas temperature mean the harm of flame stabilization in the reactor, and so the gasification reaction may be deactivated. Copyright © 2000 John Wiley & Sons, Ltd.     

300MW汽轮发电机组断油烧瓦事故的原因分析及处理

介绍了某电厂3号汽轮发电机组断油烧瓦的经过和处理过程,分析了事故的原因。事实证明,闷缸措施可防止汽轮机转子永久性弯曲。     

A meta-analytic examination of work and general locus of control.

The current meta-analysis examined the hypothesized consequences of work and general locus of control. As expected, work locus of control generally yielded stronger relationships with work-related criteria (e.g., job satisfaction, affective commitment, and burnout) than general locus of control. We also found some evidence that general locus of control yielded relatively stronger relationships with general criteria (e.g., life satisfaction, affective commitment, and burnout). Regression analysis found several unique effects for both work and general locus of control. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Linking job demands and resources to employee engagement and burnout: A theoretical extension and meta-analytic test.

We refine and extend the job demands–resources model with theory regarding appraisal of stressors to account for inconsistencies in relationships between demands and engagement, and we test the revised theory using meta-analytic structural modeling. Results indicate support for the refined and updated theory. First, demands and burnout were positively associated, whereas resources and burnout were negatively associated. Second, whereas relationships among resources and engagement were consistently positive, relationships among demands and engagement were highly dependent on the nature of the demand. Demands that employees tend to appraise as hindrances were negatively associated with engagement, and demands that employees tend to appraise as challenges were positively associated with engagement. Implications for future research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of the hydrogen addition on the HCN profiles in fuel-rich-premixed, burner-stabilized C1–C3 alkane flames

The effects of hydrogen addition on HCN formation and consumption in fuel-rich, burner-stabilized methane, ethane and propane flames are reported. The HCN mole fraction was measured using quartz-microprobe sampling followed by direct absorption spectroscopy. Experiments were performed at equivalence ratio of 1.3, with 0 and 0.2 mole fraction of hydrogen in the fuel. The mass flux through the burner was varied for each mixture. The addition of hydrogen only modestly affects the HCN mole fractions. For the vast majority of the flames studied, the peak HCN fraction decreases by less than 20% upon hydrogen addition. The decrease in HCN fraction is smaller in ethane and propane flames compared to methane flames. Increasing the mass flux, independent of hydrogen fraction, results in a small increase in the HCN peak fraction, a shift of the HCN peak towards the burner and acceleration of the HCN consumption downstream. Burnout of HCN occurs faster in ethane and propane flames than in methane flames. Comparison of the experimental results with computations using two mechanisms for NCN oxidation shows that both mechanisms predict the HCN profiles reasonably well.     

纺织服装业知识型员工工作倦怠的实证研究

 针对当前我国职业群体工作倦怠日显突出的问题,本文以纺织服装业中的知识型员工作为调查样本进行实证研究。目的是为了发现在纺织服装企业中的知识型员工的工作倦怠状况,从而使企业能够采取针对性的工作倦怠干预策略。研究过程：首先,在对调查对象进行先期访谈和参考已有文献的基础上,确定研究变量维度的构成,然后,采取问卷调查的方法收集数据,并对数据进行了统计分析。研究结果表明：我国纺织服装业中知识型员工的工作倦怠程度并不高,但工作倦怠在年龄、性别、学历等人口统计学变量上呈现出差异特征。根据研究结论,本文提出了企业工作倦怠的干预管理的对策和建议。     

加油站员工心理资本与工作倦怠、离职意愿的关系

为探讨加油站员工的心理资本与工作倦怠和离职意愿的关系,采用随机整群抽样法,在某石油公司加油站员工中进行抽样调查,发现加油站员工的心理资本及维度均与工作倦怠各维度和离职意愿呈显著负相关（P〈0．01）;而加油站员工的工作倦怠及各维度与离职意愿呈显著正相关（P〈0．01）;得出的结论是心理资本可以降低加油站员工工作倦怠和离职意愿水平。     

热重法测定火驱原油的最低燃尽温度初探

用热重法对新疆九6区原油进行了不同条件下的实验,根据失重曲线分析出,不同条件下不同温度段的失重率及残渣率,通过对曲线特征及样品最终表观现象的对比分析,推测出新疆九6区原油的最低燃尽温度,为新疆油田在九6区开展火驱先导实验提供指导。     

The job demands-resources model of burnout.

The job demands-resources (JD-R) model proposes that working conditions can be categorized into 2 broad categories, job demands and job resources, that are differentially related to specific outcomes. A series of LISREL analyses using self-reports as well as observer ratings of the working conditions provided strong evidence for the JD-R model: Job demands are primarily related to the exhaustion component of burnout, whereas (lack of) job resources are primarily related to disengagement. Highly similar patterns were observed in each of 3 occupational groups: human services, industry, and transport (total N?=?374). In addition, results confirmed the 2-factor structure (exhaustion and disengagement) of a new burnout instrument—the Oldenburg Burnout Inventory—and suggested that this structure is essentially invariant across occupational groups. (PsycINFO Database Record (c) 2010 APA, all rights reserved)