考虑不确定性的电动汽车动力电池逆向物流网络设计     

刘娟娟  郭炎可 《上海海事大学学报》2021,42(2):96-102

考虑到电动汽车动力电池回收量、回收技术水平等参数的不确定性,以逆向物流网络总利润最高和环境影响最小为目标,建立多目标模糊规划模型,进行电动汽车动力电池逆向物流网络设计。利用基于可信性测度的模糊求解方法处理模型中的模糊参数。引入决策者偏好系数,采用加权理想点法将多目标模型转化为单目标模型进行求解,得到考虑不确定性的逆向物流网络设施的选址、数量以及设施间的废旧动力电池流量分配方案。通过数值算例验证模型和算法的可行性和有效性。对回收量、回收技术水平和决策者偏好系数进行灵敏度分析,结果表明:随着回收量的增加,逆向物流网络利润增加;回收技术水平的提升和决策者选择合适的偏好系数可以提高逆向物流网络的经济效益和环境效益。  相似文献   

The social impact of schooling on students with dyslexia: A systematic review of the qualitative research on the primary and secondary education of dyslexic students     

《Educational Research Review》2023

This systematic review of the qualitative research on the formal school education of children with dyslexia addresses three main questions: 1) What is known about the educational experiences of children with dyslexia? 2) What is known about the role that parents/guardians play in their child's schooling? 3) What is known about the role of teachers and administrators in supporting children with Dyslexia? Student and parent-focused studies indicate little awareness of and support for dyslexia in schools, and a strong reliance on parental support. Limited understanding of dyslexia, lack of training, and communication issues were identified as key themes in the small number of teacher-focused studies. The analysis points to a majority of studies not having a firm theoretical grounding and the neglect of teachers and school administrator's perspectives as central issues in the reviewed research. Based on these findings, it is argued that to further understandings of the systematic effects of schools' responses to dyslexic students, research should draw more heavily on socio-cultural models of disability.  相似文献   

Why do students strive to outperform classmates? Unpacking their reasons for pursuing performance goals     

《Contemporary educational psychology》2023

Achievement goal theory has evolved since introduced about 40 years ago. One of its newer variants is the goal complex model. It assumes that each achievement goal (i.e., performance or mastery) can be pursued for many reasons and, more provocatively, that the goal’s effects depend partly on why it is pursued. Clearly, the first task for this area is to identify likely goal pursuit reasons, develop and validate a measure of reasons, and chart the influence of those reasons. Progress remains limited, however. Nearly all studies have considered only a small set of reasons suggested predominantly by self-determination theory, overlooking several other plausible reasons. Nor is there an established measure of goal pursuit reasons. To overcome those limitations, the current study validated and tested a new goal complex measure that includes several additional goal pursuit reasons, both personal (e.g., pride) and social (e.g., to make close others proud, or to help or serve others) in nature. Two culturally distinct samples of university students – one from the USA (n = 400), the other from Thailand (n = 404) – completed the measure with performance goals in mind and then reported a diverse array of educational outcomes. Their results converge for the most part. In each sample, the new measure proved to have good structural validity and psychometric properties. Several goal complexes, including the new social ones, showed unique and often desirable relationships with outcomes, too. The findings raise several research directions and implications for achievement goal theory.  相似文献   

基于社交网络的个性化知识服务模型研究     

杨瑞仙  李露琪 《新世纪图书馆》2014,(9):9-13

通过对社交网络所产生的海量用户以及数据的挖掘与分析,判断用户不同的特征与喜好,从而为用户定制个性化知识服务,达到用户的需求,增强其对产品与服务的使用黏性,这不仅满足了企业的商业目的,同时也提高了用户的满意度。论文在深入了解我国社交网络的运营模式、分析社交网络中用户行为特征的前提下,提出从用户兴趣模型出发的个性化知识服务,并建立了基于个人兴趣和兴趣传播推荐的个性化知识服务模型。  相似文献   

试论图书馆的社会角色     

阮晓岚 《新世纪图书馆》2014,(1):45-66

论文以社会学研究的经典理论—“角色理论”为基础,以公共图书馆的社会角色为研究对象,分析其困境表现并重新定位,探讨创新模式与突破,拓展图书馆发展空间,以期获得社会认同和支持,达到与社会各界互动合作,实现公共图书馆事业发展与社会发展的高度融合,增强公共图书馆作为社会公共领域知识空间、文化空间的本体属性及其行业自觉性.  相似文献   

协同创新视角下高职院校图书馆构建社会化信息服务平台的探索与研究     

赵苹 《新世纪图书馆》2014,(5):53-57

协同创新是高职院校图书馆开展社会化服务的新动力.高职院校图书馆的社会化服务对象主要面向行业产业和地方区域,具有自己独特的优势和特色.高职院校图书馆构建基于协同创新的社会化信息服务平台要实现可持续发展,需要相应的保障机制.  相似文献   

高校图书馆社会服务的实践与思考     

陈小衡 《新世纪图书馆》2014,(2):56-58,63

论文总结广州城市职业学院图书馆近几年开展的社会服务,指出社会服务重在践行现代图书馆开放的服务理念,应加强社会服务的宣传,简化服务手续,建立长效的运行机制,并依托职业教育资源优势开展社区学习信息服务.  相似文献   

图书情报学合著网络研究：基于CSSCI基金论文的可视化分析     

侯素芳 《新世纪图书馆》2014,(4):92-96

研究发现,图书情报领域的合著率处于人文社会科学的中等水平,且以2～3人的小规模合著为主导模式;同时发现基金论文有着较高的合著率,基金项目、科研团队、论文产出之间有深刻的内在联系,共同承担重大基金项目往往成为团队形成的内在机制.近年来,图书情报学已经形成“三主多辐”型庞大合著网络,跨省区、跨机构合著、区域学术融合仍亟待加强.  相似文献   

我国高校图书馆社会服务调查研究——以“211工程”高校图书馆为例     

王亚平 《新世纪图书馆》2014,(11):65-68

论文以112所“211工程”高校图书馆为调查对象,主要运用网站和问卷调查法,着重从高校图书馆社会服务意识、服务对象、服务内容、服务障碍方面进行调查,总结我国高校图书馆社会服务取得的成绩及不足,针对不足,提出了几点发展建议。  相似文献   

研究项目中课题组成员关系的差序格局探析——以图情文类国家社科基金项目为例     

朱成林  袁曦临 《新世纪图书馆》2014,(4):81-86

社会学家费孝通先生在研究中国乡村结构时提出了差序格局的概念,用以说明中国传统社会不同于西方社会“团体格局”的特点.差序格局的形成受到以下因素影响：血缘、地缘、经济水平、政治地位、知识文化水平.本研究以2005-2010年图情文类国家社科基金项目为样本,运用社会网络分析方法,分别从地缘、业缘和学缘三个方面探讨了研究项目课题组成员中反映出的关系和结构,探究并验证在课题研究中是否存在“差序结构”,并分析这种差序格局对学术研究的影响.  相似文献