大学生宿舍人际关系与心理健康的模型研究——以温州职业技术学院为例     

钱胜  苏跃飞  王文霞 《三门峡职业技术学院学报》2012,(3):105-109

采用编制成册的量表和问卷对300名浙江省温州职业技术学院在校生进行调查分析。结果表明大学生宿舍人际关系质量与心理健康水平呈现显著相关。大学生的宿舍人际关系是心理健康水平的有效预测指标．改进宿舍人际关系有助于提升高职学生心理健康水平。  相似文献   

Improvement of enamel bond strengths for conventional and resin-modified glass ionomers: acid-etching vs. conditioning     

Ling ZHANG  Tian TANG  Zhen-liang ZHANG  Bing LIANG  Xiao-miao WANG  Bai-ping FU 《Journal of Zhejiang University. Science. B》2013,14(11):1013-1024

Objective:This study deals with the effect of phosphoric acid etching and conditioning on enamel micro-tensile bond strengths(μTBSs)of conventional and resin-modified glass ionomer cements(GICs/RMGICs).Methods:Forty-eight bovine incisors were prepared into rectangular blocks.Highly-polished labial enamel surfaces were either acid-etched,conditioned with liquids of cements,or not further treated(control).Subsequently,two matching pre-treated enamel surfaces were cemented together with one of four cements[two GICs:Fuji I(GC),Ketac Cem Easymix(3M ESPE);two RMGICs:Fuji Plus(GC),RelyX Luting(3M ESPE)]in preparation forμTBS tests.Pre-treated enamel surfaces and cement-enamel interfaces were analyzed by scanning electron microscopy(SEM).Results:Phosphoric acid etching significantly increased the enamelμTBS of GICs/RMGICs.Conditioning with the liquids of the cements produced significantly weaker or equivalent enamelμTBS compared to the control.Regardless of etching,RMGICs yielded stronger enamelμTBS than GICs.A visible hybrid layer was found at certain enamelcement interfaces of the etched enamels.Conclusions:Phosphoric acid etching significantly increased the enamelμTBSs of GICs/RMGICs.Phosphoric acid etching should be recommended to etch the enamel margins before the cementation of the prostheses such as inlays and onlays,using GICs/RMGICs to improve the bond strengths.RMGICs provided stronger enamel bond strength than GICs and conditioning did not increase enamel bond strength.  相似文献   

The materials and techniques used in the paintings of Francis Bacon (1909–1992)     

《文物保护研究》2013,58(4):207-217

Abstract

Materials from 38 paintings by Francis Bacon (1909–1992), including 21 complete works and 17 partially destroyed canvases are investigated. Observations are made of the artist's technique and details are compiled of the supports used. Samples of paint and priming were taken for analysis using polarized light microscopy, Fourier transform infrared spectroscopy (FTIR), gas chromatography–mass spectrometry (GC–MS), pyrolysis–GC–MS (Py–GC–MS), and scanning electron microscopy coupled with energy dispersive X-ray analysis (SEM–EDX). Analysis of priming layers appears to show that the priming composition correlates well with particular ranges of dates. A fairly limited range of materials are found, with many of the same pigments found in works spanning Bacon's career, though other pigments were introduced at different stages in his career. Oil paints were used consistently for the painting of figures, but household paints were increasingly used in backgrounds from the 1960s onwards. A variety of different synthetic media are found in later works, including household acrylic paints and spray paints. Increased knowledge of Bacon’s materials is expected to be of great value to conservators caring for the work of this highly significant artist, and is already helping in the authentication of works attributed to him.  相似文献   

基于结构方程模型的企业业务流程外包绩效评价研究     

黄宜  董毅明  王艳伟 《科技与管理》2008,10(2):18-22

主要是对企业业务外包绩效进行定量的评价;目前关于企业业务流程外包绩效评价的研究方法有层次分析法、数据包络分析、模糊聚类分析法等,而将结构方程模型应用于企业业务流程外包绩效的评价却很少见,因此采用结构方程模型的方法对企业业务外包绩效进行研究;最后,在结构方程模型的实证研究结果下,构建了业务外包绩效评价模型,并且通过案例说明了该评价模型的使用方法,模型不但能对企业业务外包绩效进行定量的评价,而且为发包方提高企业的绩效提供了理论依据。  相似文献   

隐性知识交流和转移与企业技术创新关系的实证研究   总被引：6，自引：2，他引：4       下载免费PDF全文

林筠  杨雪  李随成 《科研管理》2008,29(5):16-23

针对隐性知识的开发和管理问题,建立了隐性知识交流、隐性知识转移和技术创新之间关系的理论模型,并在理论分析的基础上提出12个研究假设。采用问卷调查法,运用AMOS5.0把从我国东西部地区的部分制造企业和研究所收回的255份有效正式问卷数据导入结构方程模型进行分析,对理论模型和研究假设进行了检验,并依据研究结论提出了相关的对策建议。  相似文献   

零售企业公开信息对顾客感知-满意-忠诚关系的影响   总被引：2，自引：0，他引：2  

熊曙初  罗毅辉 《中国软科学》2008,(6):99-108

本文旨在研究企业公开信息是否及怎样作用于信息社会信息管理的机制。构建以公开信息为自变量,以顾客预期、感知为中介变量,以顾客满意和忠诚为因变量的结构方程模型,并以长、株、潭零售业的数据进行实证研究,揭示其影响关系。结果表明:公开信息会显著影响顾客的消费过程、消费结果和未来行为倾向;公开信息对顾客感知-满意-忠诚关系的影响具有不同的效应。提出了企业应重视和明晰披露信息等策略,从而提高管理效率和竞争能力。  相似文献   

小麦旗叶衰老过程中石蜡切片的扫描电镜观察     

姬生栋  张晋豫  夏民  王丹  徐存拴  张同斌 《河南科技学院学报》2000,28(2):5-8

对小麦旗叶衰老过程中的石蜡切片进行扫描电镜观察,结果表明,(1)旗叶衰老过程中,细胞核形态发生明显变化。即核呈球形,表面光滑,核孔匀称→核表面凸凹,部分核孔变大→核膜破裂,核解体,消失;(2)在籽粒成熟期小麦旗叶衰老及其细胞器退化消失明显加快;(3)细胞中叶绿体的退化、消失比线粒体稍快;(4)叶肉细胞的细胞核比维管束韧皮组织细胞核解体消失稍快。  相似文献   

四川省星级酒店内部营销绩效经验分析   总被引：1，自引：0，他引：1  

罗艳蓓  宋彦华  张同健 《思茅师范高等专科学校学报》2008,24(1):41-44

内部营销是一种新兴的管理理念,其本质含义是在充分发挥人本管理思想的基础上,通过提高内部员工满意度的方式来提升外部市场营销业绩.近年来,四川省星级酒店业普遍引入内部营销这种先进的营销模式,以图提高企业绩效,培育核心竞争能力.本研究的目的就是运用结构方程模型对四川省星级酒店业的内部营销效应进行经验分析,总结其成功之所,分析其尚待改进之处,以对包括星级酒店业在内的全省旅游行业进一步开展与实施内部营销模式提供理论借鉴.  相似文献   

Modelling adult skills in OECD countries          下载免费PDF全文

Rosario Scandurra  Jorge Calero 《British Educational Research Journal》2017,43(4):781-804

Research in the social sciences has focused extensively on the relationship between family background, educational attainment and social destination, on the one hand, and on the processes of skills creation and skills use, on the other. This paper brings these two branches of the literature together by examining the correlation between a range of social factors. The methodology we adopt provides a comprehensive approach to the study of the channels through which literacy skills are acquired, taking into account the interrelation of family background, educational attainment, and the use of skills at work and at home. We use the Programme of International Assessment of Adult Competences (PIAAC) dataset and apply a structural equation model (SEM). Our results show that family background and education play an important role in the configuration of adult skills and skill practices. Unequal family access to resources has a strong impact at later stages in life and strongly affects educational attainment and skills outcomes. Additionally, skills use has a positive and direct impact on adult skills.  相似文献   

旅游情境下公众低碳旅游行为影响因素研究——以三亚游客为例   总被引：2，自引：0，他引：2  

赵黎明  张海波  孙健慧 《资源科学》2015,37(1):201-210

低碳旅游发展离不开社会公众的积极参与,准确把握公众在特定旅游情境下的低碳行为机理是推动旅游业低碳转型与可持续发展的重要环节。基于对三亚市过夜游客的问卷调查数据,采用结构方程模型分析方法,从微观视角对公众在特定旅游情境下的低碳旅游行为影响因素进行了研究探讨。结果表明:公众的低碳旅游行为由一般行为与积极行为两个维度构成,公众对一般行为的认知和参与度较高,对积极行为的认知和参与度偏低。比较而言,一般行为相似于公众较为熟悉的节能环保行为,易受公众环保价值观和态度的影响;积极行为需要更高的参与热情和能力,相对更易受低碳知识和旅游地低碳情境的影响。同时,社会规范与感知利益对一般和积极低碳旅游行为都具有显著影响。基于此,研究提出了一个旨在引导公众积极参与低碳旅游行为,推动低碳旅游发展的政策框架。  相似文献