网络时代下我国合作建立存储图书馆的现实意义   总被引：4，自引：0，他引：4  

郑春汛  赵伯兴 《情报理论与实践》2009,32(7)

藏书大量增加与书库空间不足之间日益尖锐化、普遍化的矛盾,是各国图书馆正在努力探索解决的重要问题.随着互联网的发展,读者的个性化需求释放,对文献保障要求的提高,藏书剔除制度已显得不合时宜.发展数字化图书馆,由于不能完全取代纸质文献,所以不能从根本上缓解空间问题.存储图书馆在国外发展的成功案例,为我国文献保障与拓展存储空间提供了新的探索方向.  相似文献   

论出版发行信息甄别路径     

黄祖彬 《现代情报》2009,29(12):209-211

针对我国当前出版机构改革和发行市场变化情况,深入地分析出版发行信息真实与虚假的诸多表现,为采访防犯积累甄别、判断文献质量的能力,建设优良馆藏打好基础。  相似文献   

反锁定效应：小微企业网络众筹的路径选择与风险甄别     

张荣刚  徐京平 《科研管理》2018,39(8):19-25

信息技术高速发展背景下,互联网金融对小微企业支持的路径、效应值得深入探究。本文依托信息不对称和金融反锁定效应,以网络众筹为例,构建模型分析发现网络众筹主要通过规模反锁定、结构反锁定和技术反锁定支持小微企业。在信息不对称的情况下,网络众筹可以通过采集信息、增大违约成本等机制有效甄别小微企业风险;通过规模经济,降低信息成本实现反锁定效应。基于此,本文从完善平台认证机制、构建网络信用体系、引入对赌机制以及强化风险背书等方面提出对策建议。  相似文献   

分子生物色谱及其在药物筛选中的应用   总被引：1，自引：0，他引：1  

郭明  由业诚  孔亮  郑学仿 《大连大学学报》2003,24(2):38-41

本文介绍了一种液相色谱的分支——分子生物色谱.分子生物色谱采用生物分子作为固定相用来研究小分子与生物大分子和生物大分子之间的相互作用.对于药物筛选有特殊的应用,对于重要有效成分的筛选有着广阔的前景.  相似文献   

The influence of data on teachers' judgments of students' early reading and math skills     

Nicole M. McKevett  Allyson J. Kiss 《Psychology in the schools》2019,56(7):1157-1172

Teachers' judgments of student achievement are a crucial aspect of instruction and intervention. Previous research examining teachers' judgments has primarily focused on oral reading fluency and results are mixed with respect to how accurate teachers are. The purpose of the current study was to examine the accuracy of kindergarten and first‐grade teachers' judgments of students' instructional level in early reading and early math and, using a pre‐post quasi‐experimental design, determine the extent to which the use of data altered teachers' judgments. Teachers were least accurate when rating students whose skills were in the frustrational range and they tended to overestimate students' skills. The use of data did not improve accuracy overall, but there were slight (albeit not significant) changes at the frustrational and instructional levels. Results suggest that teachers' low accuracy, when compared with screening data, combined with overestimation, may result in students who most need intervention being missed.  相似文献   

基于Adams的烟末振动筛筛分效率研究     

毕初  李浙昆 《教育技术导刊》2019,18(12):155-158

针对云南曲靖卷烟厂使用烟末振动筛过程中出现筛分效率低、电能消耗大的问题,对直线振动筛的工作参数进行优化改进。通过对物料的力学分析得出影响透筛率的工作参数为激振力大小、方向和频率。每组变量设计3个实验参数,在Adams中建立参数化模型,采用仿真分析模拟废烟支和烟末在每组参数下的筛分过程。分析27组实验结果得出每组参数对透筛率的具体影响,根据生产实际选择合适的参数。优化后的工作参数相比原来节约能源35%以上,对M5型卷烟机的自动回收系统推广具有指导意义。  相似文献   

Productivity as an indication of quality in higher education: the views of employed graduates in Greece     

Maria Eliophotou Menon 《Quality in Higher Education》2016,22(3):183-196

The paper investigates the views of Greek university graduates on the link between higher education and productivity in order to determine the extent to which productivity can be considered to be an indication of quality in higher education. It also investigates the perceived effect of the type and content of higher education on productivity; factors limiting the positive impact of higher education on productivity; and ways of reducing the influence of these factors. In-depth interviews were conducted with 40 employed university graduates in Greece. Respondents generally considered higher education to have a productivity-enhancing effect, in disagreement with the screening challenge to the human capital interpretation of the link between education and productivity. The findings also suggest that respondents embraced specific conceptualisations of quality in higher education.  相似文献   

Reasons for Utilizing Mental Health Services as Predictors of College Students’ Alcohol Risk          下载免费PDF全文

Shannon R. Kenney  Lucy E. Napper  Joseph W. LaBrie  Paige Vaughn 《Journal of College Counseling》2018,21(2):125-138

The authors examined college student drinkers’ (n = 153) reasons for seeking counseling services and risk for alcohol problems. Students seeking help for impulse‐ or anger‐related issues and depression were at heightened risk for alcohol problems. Only 10% of students sought alcohol‐related help despite high rates of hazardous alcohol use (80%) and dependence (39%). Targeted screening and intervention in college counseling centers may enable providers to effectively identify and treat students in need of alcohol treatment.  相似文献   

The impact of English language learner status on screening for emotional and behavioral disorders: A differential item functioning (DIF) study          下载免费PDF全文

Matthew C. Lambert  Allen G. Garcia  Stacy‐Ann A. January  Michael H. Epstein 《Psychology in the schools》2018,55(3):229-239

There have been significant changes in the racial/ethnic and linguistic background of students attending public schools in the United States. The number of public‐school students who are English language learners (ELLs) participating in programs of language assistance has more than doubled over the past two decades. In 1993–1994, 5.1% of public‐school students in the United States were ELLs, or an estimated 2.1 million students. As of 2014–2015, 9.4% of students were ELLs, or an estimated 4.6 million students. It is estimated that by 2030, upward of 40% of school children will speak English as a second language. Meeting the needs of students who are not proficient in English is challenging for school professionals and even more so if they are identified for special services. Researchers have found that ELL students live in situations with numerous high‐risk factors, including poverty, inadequate schools, poor and violent neighborhoods, and limited access to adequate health care, mental health services, and schools. As a group, these students are more likely to underperform academically, have a lower grade point average, and drop out of school compared to non‐ELL Latino students.  相似文献   

Storying the digital professional: how online screening shifts the primary site and authorship of workers’ career stories     

Brenda L. Berkelaar  Jeffrey L. Birdsell  Joshua M. Scacco 《Journal of Applied Communication Research》2016,44(3):275-295

Employers’ use of online information increases the communicative demands and complexity of employability. For employers, gathering online information for personnel selection—a process called cybervetting—supplements or augments existing information acquisition processes. For workers, cybervetting’s extractive processes require considering potential and possible career stories employers might construct. Workers increasingly need to engage in prospective and retrospective storying to communicate and maintain employability and employment. Drawing on exemplars from employers’ reports, this essay highlights: (a) how employers report assembling and making sense of workers’ information during personnel selection; (b) the limitations of existing employability strategies; as well as (c) the increased and unequally distributed uncertainty and risk; and (d) the associated and different work expected of workers as the primary site and authorship of career stories shift.  相似文献