图书馆采编业务外包风险及控制     

宋秀梅 《江西图书馆学刊》2014,44(5):52-54

采用光沉积-液相化学法调节电子流向,构建了直接Z型TiO₂/Ag/Ag₃PO_{(4 )}(TAAPO)光催化材料.通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射仪(XRD)、X射线光电子能谱(XPS)、紫外-可见漫反射光谱仪以及光致发光(PL)光谱仪等手段对其进行表征,并对其在可见光照射下催化降解环丙沙星(CIP)的性能进行了研究.结果表明,当水体pH为3.0,催化剂分散浓度为0.3 g/L,CIP的初始浓度为15 mg/L时,光催化降解体系能够取得最佳的去除效果.在该组条件下,光照120 min CIP的降解率约为99%,并且在经历4个循环后仍然保持了良好的降解效果.在光催化降解CIP的过程中,主要反应活性物种为超氧自由基(·O₂  相似文献   

Relationship between educational indicators and research outcomes in a panel of top twenty nations: Windows of opportunity     

《Journal of Informetrics》2014,8(2):349-361

The objective of the study is to examine the empirical relationship between educational indicators and research outcomes in top twenty nations of the World in terms of number of publications, citations and patents. The literature on higher education is useful in expressing the general and visible characteristics of a research domain, but cannot reveal the possible interaction between educational reforms and research outcomes. In order to overcome this limitation, the current study employed a panel cointegration technique to evaluate the long-run relationship between educational indicators and research productivity over a period of 1980–2011. The results reveal that educational indicators act as an important driver to increase research productivity in the panel of selected countries. The most promising educational factors i.e., higher education enrolment increases GDP and number of publications by 0.898% and 1.425%, respectively. Similarly, higher education expenditures per student increases research and development (R&D) expenditures, number of citations and number of patents by 1.128%, 0.968% and 0.714%, respectively. Finally, increasing school-life expectancy contributed to researchers in R&D by 0.401%. The study concludes that there is a window of opportunity to equip the youth with necessary skills to ensure a sustainable future for the nations. Higher education empowers and enables students to compete in a highly competitive and interconnected world through research and innovations, which are the drivers of new ideas, businesses and economic growth.  相似文献   

中加地学专业博士研究生培养体系比较     

王档良  高岳 《煤炭高等教育》2014,(6):48-51

地球科学(地学)专业博士研究生的培养是学科发展的重要基础。通过对比加拿大多伦多大学和中国矿业大学地学专业博士研究生培养体系,分析中加高校培养模式的优势及特色,吸收加拿大地学专业博士研究生培养的优点,为我国相关博士研究生培养、课程改革和发展提供有益借鉴。  相似文献   

项目教学法在高职ESP课程中的应用——以《服务外包英语》课程为例     

孙国凤 《江西电力职业技术学院学报》2014,(2):52-55

以项目教学法的理论基础为指导,以《服务外包英语》课程的教学实践为例,探讨了项目教学法在高职ESP课程中的应用,并从教学内容、协作式学习任务、评价体系和教师的角色等四个方面阐述了保证项目教学法有效实施的条件。  相似文献   

Inverse associations of outdoor activity and vitamin D intake with the risk of Parkinson’s disease   总被引：1，自引：1，他引：0  

Dan Zhu  Gui-you Liu  Zheng Lv  Shi-rong Wen  Sheng Bi  Wei-zhi Wang 《Journal of Zhejiang University. Science. B》2014,15(10):923-927

Early studies had suggested that vitamin D intake was inversely associated with neurodegenerative diseases, such as Alzheimer’s disease and multiple sclerosis. However, the associations of vitamin D intake and outdoor activities with Parkinson’s disease (PD) are still unclear, so this study is to evaluate these relationships from a case-control study in elderly Chinese. The study population involved 209 cases with new onsets of PD and 210 controls without neurodegenerative diseases. The data on dietary vitamin D and outdoor activities were collected using a food-frequency questionnaire and self-report questionnaire. Multivariable logistic regressions were used to examine the associations between dietary outdoor activities, vitamin D intake and PD. Adjustment was made for sex, age, smoking, alcohol use, education, and body mass index (BMI). Adjusted odds ratios (ORs) for PD in quartiles for outdoor physical activity were 1 (reference), 0.739 (0.413, 1.321), 0.501 (0.282, 0.891), and 0.437 (0.241, 0.795), respectively (P=0.002 for trend). Adjusted ORs for PD in quartiles for total vitamin D intake were 1 (reference), 0.647 (0.357, 1.170), 0.571 (0.318, 1.022), and 0.538 (0.301, 0.960), respectively (P=0.011 for trend). Our study suggested that outdoor activity and total vitamin D intake were inversely associated with PD, and outdoor activity seems to be more significantly associated with decreased risk for PD.  相似文献   

基于MPI的CSAMT一维正演并行计算研究     

周武  原健龙  曾利  周洪生 《安阳大学学报》2014,(2):33-35

可控源音频大地电磁CSAMT一维正演计算,采用汉克尔变换求解含有零阶和一阶贝塞尔函数的积分式,传统串行正演算法循环计算每个频率的视电阻率值,因克尔变化计算较慢。在Windows系统上使用Fortran语言和MPICH2工具,对频率采用对等模式,开发了基于MPI的CSAMT一维正演并行计算程序。通过与一维CSAMT串行程序的对比,验证了并行程序的正确性,为CSAMT一维全区资料反演和多维计算提供了并行研究基础。  相似文献   

万维网应用于大学教育的探索     

牟连佳 《高教论坛》2014,(9)

探讨了万维网(Web)在大学教育中的应用现状与趋势。Web激发我们通过采用信息和通信技术,从根本上改变大学教育方式和提高大学教育质量的想像力。Web在大学教育中的应用,主要呈现为正式和非正式学习的区别,在线分发和使用的学习材料的格式、包装,虚拟学习和管理学习环境中的材料、过程管理,语义Web提供的解决方案等,同时预示着新的挑战,如大规模开放式在线课程和身临其境的3DWeb。  相似文献   

《中国近现代史纲要》“M-S-D”教学模式新探     

吴志娟 《黄石理工学院学报(人文社科版)》2014,(1):79-83

“M—S—D”教学是专门为《中国近现代史纲要》课程而设计的一种教学模式。Modemiza-tion指教学理念上的“现代化范式”;SpeciM—subject指教学内容的“专题化”设计;Diversification指教学方法上的“多样化”手段。该教学模式试图将中国近现代史教学由传统的以“革命范式”为主的教学路径,转化为以“现代化范式”为主。以“现代化范式”为主线的“M-S-D”教学模式,相对传统的“革命范式”,能更好地适应当今全球化时代过程中中国现代化发展的趋势。  相似文献   

基于MGGD和上下文模型的小波域图像去噪     

吴宇宁 《莆田学院学报》2014,(5):39-43

考虑到自然图像小波系数分布的两个统计特性,用多元广义高斯分布(MGGD)模型描述小波系数的统计分布,采用基于上下文模型的自适应协方差矩阵估计,再利用最大后验概率估计原始图像的小波系数。实验表明,该方法在直观视觉上去噪效果明显,在信噪比方面也要优于其他的一些小波去噪方法。  相似文献   

大众文化视阈下的R·施特劳斯交响诗创作——以《英雄的生涯》和《家庭交响曲》为研究对象     

余鑫  吴娜娜 《黄山学院学报》2014,(4):78-82

在20世纪至21世纪有关西方音乐历史的著作中,对德国晚期浪漫主义作曲家R·施特劳斯的音乐作品的评价是贬多于褒。以他的交响诗为研究对象,从＂大众文化＂的维度重新审视R·施特劳斯的交响诗创作,发现其音乐中体现出的对日常生活叙事的关注具有超前的意义和特殊的价值,值得学界作进一步的探讨。  相似文献