解决高校扩招后教学质量问题的若干思考   总被引：5，自引：0，他引：5  

何炬  刘建昌 《高教论坛》2003,(2):18-20

要解决高校扩招后的教学质量问题，应该采取调整高等教育的层次结构，按照学校定位办校提高认识、统一认识；加强师资队伍建设；增加投入、改善办学硬件条件；深化教学改革、强化教学质量管理完善高等教育法规等对策。  相似文献   

A technological pedagogical content knowledge based instructional design model: a third version implementation study in a technology integration course     

Chia-Jung Lee  ChanMin Kim 《Educational technology research and development : ETR & D》2017,65(6):1627-1654

This paper presents the third version of a technological pedagogical content knowledge (TPACK) based instructional design model that incorporates the distinctive, transformative, and integrative views of TPACK into a comprehensive actionable framework. Strategies of relating TPACK domains to real-life learning experiences, role-playing, and teachers as designers were developed based on the three views and integrated into the third version of the model. The model was then applied in a teacher education undergraduate course on technology integration. A case study approach was used. Data were collected from the participants’ discussion worksheets, lesson designs, and the researchers’ field observation notes. Data analysis results suggest that the strategies integrated into the model helped the participants deepen their understanding of student-centered technology applications and practice TPACK. Findings, implications, and future research possibilities are discussed.  相似文献   

Antimelanogenic effects of <Emphasis Type="Italic">Inula britannica</Emphasis> flower petal extract fermented by <Emphasis Type="Italic">Lactobacillus plantarum</Emphasis> KCCM 11613P     

Eun-hye Park  Won-young Bae  Jae-yeon Kim  Kee-tae Kim  Hyun-dong Paik 《Journal of Zhejiang University. Science. B》2017,18(9):816-824

The inhibitory effects of Lactobacillus plantarum-fermented and non-fermented Inula britannica extracts on the tyrosinase activity were comparatively investigated to examine whether and how they improve the whitening activity, and the contents of total flavonoids and polyphenolics as bioactive compounds were determined. The skin whitening activity using in vitro or ex vivo tyrosinase and L-3,4-dihydroxyphenylalanine (L-DOPA) staining was examined. The total flavonoid content (TFC) was increased by 13.4% after 72 h-fermentation. The viabilities of the B16F10 cells treated with the fermented and non-fermented control extracts were 100.26% and 92.15% at 500 μg/ml, respectively. In addition, the inhibition of tyrosinase activity was increased by the fermented samples from 29.33% to 41.74% following fermentation for up to 72 h. The tyrosinase activity of the untreated control group was increased to 145.69% in B16F10 cells. The results showed that I. britannica fermented by L. plantarum dose-dependently inhibited tyrosinase activity, which was stimulated by α-melanocyte stimulating hormone. These results suggest that lactic fermented I. britannica extracts can be used as effective skin-whitening materials.  相似文献   

Pedagogical Agents as Learning Companions: The Role of Agent Competency and Type of Interaction   总被引：1，自引：0，他引：1  

Yanghee Kim  Amy L. Baylor 《Educational technology research and development : ETR & D》2006,54(3):223-243

This study was designed to examine the effects of the competency (low vs. high) and interaction type (proactive vs. responsive) of pedagogical agents as learning companions (PALs) on learning, self-efficacy, and attitudes. Participants were 72 undergraduates in an introductory computer-literacy course who were randomly assigned to one of four treatments: Low-Proactive, Low-Responsive, High-Proactive, and High-Responsive. Results indicated a main effect for PAL competency. Students who worked with the high-competency PAL in both proactive and responsive conditions achieved higher scores in applying what they had learned and showed more positive attitudes toward the PAL. However, students who worked with the low-competency PAL reported significantly enhanced self-efficacy beliefs in the learning tasks. Also, there was a main effect far PAL interaction type. A proactive PAL had a significantly positive impact on recall. These different results on learning and motivational outcomes suggest that the competency and interaction type of a PAL should be designed according to the desired learning and motivational goals.  相似文献   

An efficient method for tracing planar implicit curves   总被引：1，自引：0，他引：1  

YU Zheng-sheng CAI Yao-zhi OH Min-jae KIM Tae-wan PENG Qun-sheng 《浙江大学学报(A卷英文版)》2006,7(7):1115-1123

INTRODUCTION Tracing a planar implicit curve f(x, y)=0 on a rectangular region [xl, xr]×[yb, yt] is of great interest in Computer-Aided Design and Computer Graphics. While parametric curves are easy to plot, plotting implicit curves is a challenging problem. Planar im- plicit curve plotting method can be classified into two categories (Shou et al., 2005; Martin et al., 2002; Lopes et al., 2002). In the first category are subdivi- sion methods (Shou et al., 2005; Martin et al., 2002) …  相似文献   

以酸洗废液生产聚合硫酸铁的工艺研究   总被引：1，自引：0，他引：1  

胡菊  马俊林  郭兴荣  夏永平 《十堰职业技术学院学报》2005,18(1):81-82

钢铁酸洗废液是一种常见的污染物,利用其生产聚合硫酸铁,可以实现废物的综合利用。论述了聚合硫酸铁的合成原理,探讨了用钢铁酸洗废液生产聚合硫酸铁的工艺流程,通过实验研究确定了生产工艺中适宜的温度、压力、反应时间、反应物组成和原料浓缩时蒸发器温度等条件。采用该工艺所得产品质量好、净水效率高。  相似文献   

腐蚀钼阴极尖端溶液的配制   总被引：1，自引：1，他引：1  

李海雁 胥良王开云  窦菊英 《昆明师范高等专科学校学报》2001,23(4):79-80

报导了一种配制腐蚀阴极尖端溶液的方法，用这种方法配制的溶液来腐蚀钼阴极尖端，得到了尖端曲率半径为0．1——0．6μm，这样的阴极尖端其发射特性能够满足我们用这种金属（钼）树料来制作阴极尖端的要求。  相似文献   

A quantitative analysis of moral exemplars presented in moral education textbooks in Korea and Japan     

Hyemin Han  Sung Choon Park  Jongsung Kim  Changwoo Jeong  Yutaka Kunii  Sora Kim 《Asia Pacific Journal of Education》2018,38(1):62-77

This study is a comparative analysis of the characteristics of moral exemplars presented in moral education textbooks in Korea and Japan. The purpose of the study is to examine and compare moral values presented through the lives and stories of moral exemplars in the two countries that have moral education as an independent and separate subject based on the national curriculum. To this end, the study uses analytical criteria such as gender, nationality, social roles, historical backgrounds, and specific moral values in order to investigate characteristics of 307 moral exemplars in Korea’s and Japan’s most used moral education textbooks. The results show significant similarities and differences in moral exemplars between the two nations. In the case of the similarities, both countries emphasize moral autonomy and respect for human life. In the case of the differences, while Korea presents more historic figures as moral exemplars, Japan presents more students and ordinary people as moral exemplars.  相似文献   

高职高专商务翻译课程浅析     

居珈璇  刘洋 《中国科技信息》2007,(14):240-241

如何在高职高专院校开设好商务翻译课已经成为众多教育工作者特别在高职高专院校从事外语教学工作者研究的课题。该论文从高职高专翻译教学实际出发,提出了教学中应遵循的原则并具体讨论了高职高专商务翻译课程训练的方法、教材选择等问题。  相似文献   

我国战略生物资源大数据及应用          下载免费PDF全文

梁卓  褚鑫  曾艳  周桔  马俊才 《中国科学院院刊》2019,34(12):1399-1405

生物资源是国家重要的战略性资源。组学时代的到来催生数据量级的增长将推动生命科学研究向"数据密集型科学"的新范式转变。因此,生物资源的大数据与生物资源本身一样,也已成为国家战略资源,成为国际科技与产业竞争热点和战略制高点。目前,我国亟待加快建设国家级战略生物资源大数据共享平台,建立全面支撑生物资源保存、利用、开发、挖掘和可持续利用的技术体系,形成包括数据质控流程、数据存储中心、数据共享中心和数据转化中心的可对海量数据进行有效管理、高效分析和可用、易用的综合数据系统,支撑我国生物资源前沿领域科学发现和产业创新发展。中国科学院战略生物资源信息平台配合中国科学院战略生物资源服务网络的建设,形成了包括数据管理规范、数据汇集平台、数据门户和数据可视化系统在内的一套完整的数据生态,从而有效地促进了中国科学院战略生物资源数据的集成、共享、挖掘和利用。目前,该平台已经覆盖中国科学院植物园、标本馆、生物遗传资源、实验动物、生物多样性监测网络5类资源的42家单位,集成6 981 465条数据,且全部数据资源都可以通过数据门户进行共享。  相似文献