基于Web的图书馆网上信息管理系统     

张培 《现代图书情报技术》2004,(Z1)

以高校图书馆网站为例介绍了信息服务型网站建立基于 Web的网上信息管理系统的设计与实现。文章分析了系统建立的目标、系统的设计需求 ,给出了系统的设计流程图 ,并对系统的结构层次、功能模块加以描述和说明。  相似文献   

信息检索过程中的用户交互行为及其影响因素   总被引：1，自引：1，他引：1  

裴雷 《图书情报工作》2007,51(8):42-44,143

阐述信息与用户交互的情报理论基础，从行为发现、行为认知和相关反馈三个层面反映用户交互研究的通用研究方法，并针对用户信息素质差异、检索系统功能差异和检索社会文化背景差异提出用户交互的影响因素，讨论其对检索工具的影响。  相似文献   

NaCI—CaCl2-H2O体系人工合成流体包裹体及其冷冻后的熔融行为研究     

丁俊英  倪培 《中国科技期刊研究》2007,23(9):2039-2044

在倪培等在2003年和丁俊英等在2005年成功开展人工合成包裹体研究的基础上，利用愈合人工水晶裂隙技术，在设定的实验条件下合成了NaCl-CaCl2-H2O体系的流体包裹体。对合成的包裹体进行了岩相学观察，显微测温工作，并结合相应相图分析研究——主要对合成包裹体的低温熔融行为进行探讨。结果表明合成的包裹体捕获了既定组成的流体，其低温相变过程与相应相图吻合。因此，人工合成流体包裹体与天然包裹体相似，天然流体包裹体的各种行为可以参照人工合成流体包裹体；同时，通过人工合成流体包裹体校正补充实验相图，使其更准确的被应用于天然包裹体测定分析。  相似文献   

为了儿童学习的课程——中国情境教育学派李吉林情境课程的建构   总被引：1，自引：0，他引：1  

裴新宁  王美 《教育研究》2011,(11)

从学习科学视角分析中国情境教育学派李吉林情境课程,可以看到该课程体系的基本特点是:课程设计以学习者为中心,课程实施建基于优化的学习情境,课程目标以发展儿童理解力为核心价值追求,重视儿童道德性、社会性和智力性的整合发展,善用非正式环境作为拓展的心智源泉以促进儿童的卓越。在教学策略层面,李吉林情境课程将学术性知识的系统性、学习活动的操作性、审美教育的愉悦性融为一体,强调创设优化的学习情境,激起儿童热烈的情绪,促发与给养儿童的主动参与。  相似文献   

A new linearly-combined bi-exponential model for kinetic analysis of the isometric relaxation process of <Emphasis Type="Italic">Bufo gastrocnemius</Emphasis> under electric stimulation in vitro     

Guo R  Li SB  Zhao LN  Zhao YS  Lu W  Yuan P  Deng P  Liao F 《Journal of Zhejiang University. Science. B》2007,8(12):867-874

There was a slow-relaxing tail of skeletal muscles in vitro upon the inhibition of Ca^2＋-pump by cyclopiazonic acid （CPA）. Herein, a new linearly-combined bi-exponential model to resolve this slow-relaxing tail from the fast-relaxing phase was investigated for kinetic analysis of the isometric relaxation process of Bufo gastrocnemius in vitro, in comparison to the single exponential model and the classical bi-exponential model. During repetitive stimulations at a 2-s interval by square pulses of a 2-ms duration at 12 V direct currency （DC）, the isometric tension of Bufo gastrocnemius was recorded at 100 Hz. The relaxation curve with tensions falling from 90% of the peak to the 15th datum before next stimulation was analyzed by three exponential models using a program in MATLAB 6.5. Both the goodness of fit and the distribution of the residuals for the best fitting supported the comparable validity of this new bi-exponential model for kinetic analysis of the relaxation process of the control muscles. After CPA treatment, however, this new bi-exponential model showed an obvious statistical superiority for kinetic analysis of the muscle relaxation process, and it gave the estimated rest tension consistent to that by experimentation, whereas both the classical bi-exponential model and the single exponential model gave biased rest tensions. Moreover, after the treatment of muscles by CPA, both the single exponential model and the classical bi-exponential model yielded lowered relaxation rates, nevertheless, this new bi-exponential model had relaxation rates of negligible changes except much higher rest tensions. These results suggest that this novel linearly-combined bi-exponential model is desirable for kinetic analysis of the relaxation process of muscles with altered Ca2^＋-pumping activity.  相似文献   

Production of conjugated linoleic acids by Lactobacillus plantarum strains isolated from naturally fermented Chinese pickles     

Liu P  Shen SR  Ruan H  Zhou Q  Ma LL  He GQ 《Journal of Zhejiang University. Science. B》2011,12(11):923-930

Naturally fermented pickles harbour many lactic acid bacteria (LAB). Forty-three LAB strains with conjugated linoleic acid (CLA)-producing ability were isolated from three naturally fermented pickle brines. Of these isolates, lp15 identified as Lactobacillus plantarum by API 50 CHL system and full-length 16S rDNA sequence analysis exhibited the highest CLA-producing ability (26.1% conversion) at 48 h in de Man Rogosa Sharpe (MRS) broth in the presence of 100 μg/ml of linoleic acid (LA). Compared to other strains, L. plantarum strain lp15 showed the highest tolerance upon increased levels of LA in the medium, i.e., up to 600 μg/ml. This strain converted about 25% of LA into CLA isomers [predominantly cis-9, trans-11 CLA (9-CLA) and trans-10, cis-12 CLA (10-CLA)], of which 75% was 9-CLA. Interestingly, though the conversion rate of LA into CLA by lp15 remained stable between 100 to 600 μg/ml LA levels in the medium, it dropped sharply at 1000 μg/ml. Taken together, the lp15 strain displayed relatively high LA tolerance with higher conversion rate, which implies that this strain is a valuable candidate for enhancing the CLA content in food-sources like pickles.  相似文献   

整合城乡职业教育资源 推进职业教育区域化发展     

王培  吕瑞林  蔡静静 《河北软件职业技术学院学报》2011,13(2):17-19,38

在我国,随着区域经济发展和职业教育联系的日益紧密,城乡职业教育发展的差距更加凸显。要消除两者的差异,使职业教育服务于经济发展,需要通过政府主导、城乡合作、校企融通、市场引导等多种途径,积极进行城乡职业教育资源整合,在城乡统筹思想指导下,推进职业教育区域化发展。  相似文献   

Using automatic image processing to analyze visual artifacts created by students in scientific argumentation     

Bo Pei  Wanli Xing  Hee-Sun Lee 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(6):3391-3404

Science classes should support students' development of scientific argumentation. While previous studies have analyzed argumentative texts, they have overlooked the ways in which other types of representations, including images, affect the production of such texts. In addition, studies into the use of visual images in science education have offered mostly qualitative analyses. To fill these gaps in the research, this study used techniques of automated image processing to extract relevant information from student-generated visual artifacts. Specifically, it used a series of image-processing algorithms to automatically extract and quantify features of images created by students to serve as evidence in support of scientific arguments. Using various statistical analyses, we identified the relationships between the extracted features and the students' performance levels in constructing scientific arguments. The results revealed that the presence of water in a student's image correlated significantly with that student's claim and explanation scores and that the amount of water present in a student's image correlated significantly with that student's claim score, but not with their explanation score. These results indicate that automatic image processing can successfully identify image features that affect students' performance in scientific argumentation. Using this analysis as an example, we discuss implications for incorporating automated image processing into further research into scientific argumentation and the development of automated feedback.  相似文献   

Principled practical knowledge in bridging practical and reflective experiential learning: case studies of teachers’ professional development     

Voon  Xin Pei  Wong  Lung-Hsiang  Chen  Wenli  Looi  Chee-Kit 《Asia Pacific Education Review》2019,20(4):641-656

Asia Pacific Education Review - “Heuristic approach” is a teachers’ professional development (TPD) method supported by principled practical knowledge (PPK) which focuses on...  相似文献   

人格研究方法的回顾与展望     

李霈 《重庆职业技术学院学报》2011,20(3):92-94

本研究归纳、整理了心理动力学、特质论、人本主义、行为主义、社会认知五个人格心理学的主要流派及其代表心理学家在研究人格心理学时采取的特色的研究方法及范式,同时引入行为遗传学、内隐研究领域对人格心理的新的研究方法,向当代人格心理学的研究者们展现了人格研究领域的基本研究方法全貌,为他们今后的研究提供了不同的研究视角和参照手段。  相似文献