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91.
China's energy inefficiency: A cross-country comparison   总被引:2,自引:0,他引:2  
This paper constructs a total-factor energy technical efficiency index using the data envelopment analysis (DEA) method following the total factor productivity framework. We then compare energy technical efficiency across 156 countries from 1980 to 2007. The results show that China's energy efficiency considerably trails other countries’ although it has made significant gains within the last 28 years. Further analysis indicates that scale inefficiency rather than pure technical efficiency contributes to China's energy inefficiency.  相似文献   
92.
ABSTRACT

Objective: To examine the association between degree of real-life closeness of social media (SM) contacts and depressive symptoms. Participants: Students ages 18–30 (N = 1124) were recruited in August 2016. Methods: Participants completed an online survey assessing SM use and depression. We used multivariable logistic regression to assess associations between real-life closeness of SM contacts and depressive symptoms. Results: After controlling for covariates, each 10% increase in the proportion of SM friends with whom participants had no face-to-face relationship was associated with a 9% increase in odds of depressive symptoms (AOR = 1.09; 95% CI = 1.05–1.13). However, each 10% increase in the proportion of SM friends with whom participants had a close face-to-face relationship was associated with a 7% decrease in depressive symptoms (AOR = 0.93; 95% CI = 0.89–0.97). Conclusions: Having no in-person relationship with SM contacts is associated with increased depressive symptoms; however, having close in-person relationships with SM contacts is associated with decreased depressive symptoms.  相似文献   
93.
94.
大学生“村官”已成为推动新农村建设的重要群体,这一群体能否有效地发挥作用,其关键在于大学生“村官”是否能够真正投身农村建设从而激发出积极的工作行为.现有相关研究中,大多学者关注制度政策对工作行为绩效的影响,忽视了个体心理认知层面.关于大学生“村官”的研究必须深入到此群体本身的心理过程,本研究从认同构建过程角度出发,分析并构建了身份认同与自我效能感对其组织公民行为的影响机制.研究结果表明,激发大学生“村官”的身份认同感会提高其自我效能感,从而更有助于产生组织公民行为.  相似文献   
95.
楚道文 《兰州学刊》2013,(7):176-183
住房保障就是通过市场、社会、互助、家庭等各种方式满足社会成员的住房需求,保障社会成员的住房权利。基于这一认识,住房保障制度体系由住房社会保障制度、住房自力保障制度、住房互助保障制度、住房家庭保障制度和住房其他保障制度共同构成。不同的构成部分,其制度目的、实施手段和实施内容都有不同。  相似文献   
96.
在21世纪的知识经济时代,知识产权成为国与国之间核心竞争力的重要体现,世界各国均非常重视知识产权教育.目前,我国高校的知识产权教育水平还比较落后,定位仍存在一定的误区,教学针对性不强,师资力量严重匮乏.为此,应在转变教育理念,改革教学内容体系,加强师资队伍建设等方面对在校大学生进行知识产权教育.  相似文献   
97.
Northeastern Illinois is under heavy urban sprawl pressure leading to changes in land-use and negative impacts on existing wetlands directly adjacent to these new developments. Determining the impact of land-use changes on wetlands is important as it can have management and preservation implications within this region. One tool to evaluate these changes is the Floristic Quality Assessment (FQA), a method based on plant species composition at a site and the individual species habitat affinity and disturbance tolerance. The objectives of this study were to: 1) determine how wetland size, impervious surface, and distance from development influence FQA indicators and 2) determine if period (before/after development) and buffer size affect FQA indicators. Fourteen wetlands located in Northeastern Illinois were surveyed during 2004 through 2006 (prior development) and revisited in 2008 (post development). Positive correlations between wetland size and FQA indicators and between impervious surface and percent native species were found. In addition, species richness increased after development occurred and wetlands with larger buffers had higher percentages of native species. This study has demonstrated that larger wetlands are more diverse and land-use changes may not decrease wetland plant diversity in the short term in an urban setting.  相似文献   
98.
Using relational theory and survey data from the Toledo Adolescent Relationships Study (n = 665), this article examined whether individuals were tested for HIV while intimately involved in a current or recent heterosexual relationship. The analyses included the respondent's and partner's sexual risk factors (non-exclusivity and lifetime number of partners), relational variables, prior testing, and demographic characteristics. It was found that 39% of respondents had an HIV test while involved in their current or most recent sexual relationship, and women (47%), compared with men (29%), were significantly more likely to have been tested. Whereas some predictors operated similarly (number of sex partners and pressured to have sex), others displayed significant gender differences (partner's sexual exclusivity, sexual communication difficulties, and pregnancy), particularly related to women's testing behaviors. Excerpts from qualitative interviews with male respondents suggested that some relational dynamics, not well reflected in relational theory, played a role in their testing. Results highlight the need to consider gendered dynamics when targeting young adults for routine HIV testing.  相似文献   
99.
This article examines the production of erotica in a Chinese cultural context. It takes the photo books featuring teenage models published in Hong Kong in 2010 as case studies in which a total of 2,205 photographs of teenage models were analyzed. In-depth interviews were conducted with six producers of these images. It was found that the set of erotic pictures was characterized by three distinctive features. First, they emphasized a look of innocence that suggested purity, fragility, and delicacy. Second, albeit being sexy and desirable, the girls were often presented as if they were unaware of their sexiness. The implication was that their sexiness was unintentional and, thus, the girls were not to blame. Finally, a sense of intimacy was purposefully built between the models and readers by constituting a direct gaze and presenting models as ordinary “girls next door.” All these echoed the emphasis of female chastity in Chinese culture. It appears that in Hong Kong, where sexuality issues often provoke debates, the producers of sexy images have benefited from media controversies. By heightening expectations of potential customers, they fuel the “erotic” imagination of the readers. The production of erotica is, hence, completed through a collaboration between teenage models, producers, marketers, and consumers.  相似文献   
100.
This article presents an historical review of the organization known as Student Health Services at Academic Medical Centers (SHSAAMc). The authors discuss characteristics of health service directors as well as the history of meetings, discussion, and leadership. The focus of the group is the healthcare needs of health professions students at academic medical centers.  相似文献   
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