科研成果

2014

Wang L, Shang S, Kang X, Teng S, Zhu F, Liu B, Wu Q, Li M, Liu W, Xu H, et al. Modulation of dopamine release in the striatum by physiologically relevant levels of nicotine. Nature Communications. 2014.

Yu D-Q, Tu Y-H, Lai L-H. Molecular interactions of bacterial chemoreceptor assemblies. Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica. 2014;(7):1347-1353.

Zheng S, Zhang G, Li J, Chen PR. Monitoring endocytic trafficking of anthrax lethal factor by precise and quantitative protein labeling. Angewandte Chemie - International Edition. 2014;(25):6449-6453.

李晓明范逸洲; 王宇; 冯. MOOCs课程学习与评价调查. 开放教育研究 [Internet]. 2014;(3):27-35. 访问链接 Abstract

本文基于对7门北京大学MOOC课程结课时的学生调查数据,分析了首批MOOCs课程的学生成分以及学生课程的评价。通过归类分析,本文确定了北大MOOCs课程学生的群体特点,以及课程的优点和存在的问题,为进一步改进质量提供了线索。

汪琼贾积有; 缪静敏;. MOOC学习行为及效果的大数据分析——以北大6门MOOC为例. 工业和信息化教育 [Internet]. 2014;(9):23-29. 访问链接 Abstract

2013年9月到2014年1月,北京大学6门MOOC课程在Coursera平台上线并完整实施。笔者对全部6门课程的82352位注册学员的学习行为数据进行了汇总与分析,试图发现课程层面上学员的网上学习行为及其对学员学业成绩的影响。相关分析结果表明,学业成绩与平时测验成绩和论坛活跃程度(发帖、回帖)有比较强烈的正相关关系,与观看课程网页次数有一定的正相关关系。无成绩学员的特征是,观看视频和网页、观看和下载课程内容的次数随着在学时间增加而增加,论坛参与性不强,有些参与较多。对取得了期末成绩的学生的数据分析发现,其成绩与以下大部分指标在0.01水平上呈显著正相关:在线时间、观看视频次数、观看网页次数、浏览和下载讲义次数、平时测验成绩之和,与开始学习时间呈显著负相关;5门课程结果显示成绩与论坛参与程度(发帖、回帖)呈正相关。

贾积有, 缪静敏, 汪琼. MOOC学习行为及效果的大数据分析——以北大6门MOOC为例. 工业和信息化教育. 2014;(09):23-29.Abstract

汪琼，缪静敏. MOOC研究国外发展概述. 工业和信息化教育 [Internet]. 2014;(11):3-10. 访问链接 Abstract

近两年来,MOOC的实践与研究都有了初步的发展,本文对2008—2012年以来的文献进行收集分析,从提供者、参与者、理论、技术、方法五个维度以关键词的形式对研究涉及的内容进行了归类整理。为了对这些关键词及关键词之间的联系有进一步的认识,文章又从MOOC形式辨析、课程提供者的现实问题、学习者体验探究、MOOC数据分析几个主题出发,梳理出MOOC研究国外发展的大致脉络,为相关的研究人员提供参考。

Wu, Xiaoyu; *Li L. The motives of intergenerational transfer to the elderly parents in china: consequences of high medical expenditure. Health Economics. 2014;23(6):631-652.Abstract

The support for the elderly is facing big challenges with the problem of population aging. Transfers from adult children could partly insure elderly parents against low income and high medical expenditure. There are two main motives for transfers in the literature, namely altruism and exchange. By using data from a new household survey of people aged 45 years and above in China, we estimate the transfer derivatives with the adjustment of medical expenditure in elderly parents' income. We find a large negative impact of adjusted income on transfers at the lower end of income distribution, which is consistent with the altruistic motive. Evidence on the exchange motive is found only for sons, but not for daughters. In addition, there is evidence on the 'exchange-for-service' motive, which interprets transfer as a payment to parents' family services, such as taking care of grandchildren.

Li Z, Lu H, Yang W, Yong J, Zhang Z-N, Zhang K, Deng H, Xu Y. Mouse SCNT ESCs have lower somatic mutation load than syngeneic iPSCs. Stem Cell Reports. 2014;(4):399-405.

Chen G, Wang XQ, Fu K, Rong X, Hashimoto H, Zhang BS, Xu FJ, Tang N, Yoshikawa A, Ge WK, et al. Multi-bands photoconductive response in AlGaN/GaN multiple quantum wells. Applied Physics Letters. 2014;104:172108.

Hao Z, Lou H, Zhu R, Zhu J, Zhang D, Zhao BS, Zeng S, Chen X, Chan J, He C, et al. The multiple antibiotic resistance regulator MarR is a copper sensor in Escherichia coli. Nature Chemical Biology [Internet]. 2014;(1):21-28. 访问链接

Chen J, Sun C, Hu X. Nanoscale all-optical devices based on surface plasmon polaritons. CHINESE SCIENCE BULLETIN. 2014;59:2661-2665.Abstract

Surface plasmon polariton, a kind of surface electromagnetic wave propagating along the interface between metals and dielectrics, provides an excellent platform for the realization of integrated photonic devices due to its unique properties of confining light into subwavelength scales. Our recent research progresses of nanoscale integrated photonic devices based on surface plasmon polaritons, including all-optical switches, all-optical logic discriminator, and all-optical routers, are introduced in detail.

Bai P, Kao J, Chen J-H, Mickelson W, Zettl A, Xu T. Nanostructures on graphene using supramolecule and supramolecular nanocomposites. Nanoscale. 2014;(9):4503-4507.

Zhu H, Deng Y, Lei R, Ma H, Zhuang F. Neuro-Immune Interactions for Cell-based Model under the Conditions of Irradiation. 40th COSPAR Scientific Assembly. 2014;40:F2. 1-22-14.

Wu P, Shi H-S, Luo Y-xiao, Zhang R-X, Li J-L, Shi J, Lu L, Zhu W-L. Neuropeptide trefoil factor 3 attenuates naloxone-precipitated withdrawal in morphine-dependent mice. Psychopharmacology. 2014.

Awan UFM, Hasan M, Iqbal J, Lei R, Lee WF, Hong M, Qing H, Deng Y. Neuroprotective role of BNIP3 under oxidative stress through autophagy in neuroblastoma cells. Molecular biology reports. 2014;41(9):5729-5734.

Wang J-T, Chen C, Wang E, Kawazoe Y. A new carbon allotrope with six-fold helical chains in all-sp 2 bonding networks. Scientific Reports. 2014.

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