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学科素养视域下中职英语课堂活力优化的探索 被引量:1
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作者 陈迹 《海外英语》 2022年第19期213-214,228,共3页
中等职业学校新的课程标准颁布后,立德树人和学科核心素养成了最醒目的关键词。文章从福建省中职学校英语教学现状引发思考,通过教师团队的深入实践,领会到应在引导学生学习掌握语言知识的同时,设计和实施真实的活动情境任务,突出职业... 中等职业学校新的课程标准颁布后,立德树人和学科核心素养成了最醒目的关键词。文章从福建省中职学校英语教学现状引发思考,通过教师团队的深入实践,领会到应在引导学生学习掌握语言知识的同时,设计和实施真实的活动情境任务,突出职业特点的实践性,结合线上线下混合形式,焕发课堂的生机和活力,真正达到素养导向的育人目标。 展开更多
关键词 中职英语 核心素养 课堂教学 双线联动 活力优化
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制度环境对社会组织活力的影响研究综述
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作者 刘春湘 曾芳 《管理观察》 2018年第29期72-76,共5页
依据组织生命周期理论,社会组织是一个孕育于制度环境中的生命有机体。本文基于文献梳理发现,制度环境对社会组织的产生、运作和退出,都有着十分重要的影响。制度催生社会组织的产生,制度规范社会组织的运作,制度筛选社会组织的留存。... 依据组织生命周期理论,社会组织是一个孕育于制度环境中的生命有机体。本文基于文献梳理发现,制度环境对社会组织的产生、运作和退出,都有着十分重要的影响。制度催生社会组织的产生,制度规范社会组织的运作,制度筛选社会组织的留存。综合学界观点,本文的结论是为激发社会组织活力,有必要全面优化制度环境。 展开更多
关键词 社会组织制度环境制度优化激发活力生命周期
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Optimization of Fermentation Conditions of Acid Resistant α-amylase Producing Strain 被引量:2
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作者 刘雅琴 乌日娜 段金华 《Agricultural Science & Technology》 CAS 2010年第8期73-76,共4页
[Objective] The aim was to optimize the fermentation conditions of acid resistant α-amylase producing strain. [Method] Based on the selection of an acid resistant α-amylase producing strain,the fermentation conditio... [Objective] The aim was to optimize the fermentation conditions of acid resistant α-amylase producing strain. [Method] Based on the selection of an acid resistant α-amylase producing strain,the fermentation conditions including C,N contents and initial pH of culture medium,seed age,inoculum size,rotation speed of shake flask and fermentation temperature were optimized. [Result] The optimum fermentation conditions for acid resistant α-amylase producing strain were:seed age 14 h,inoculum size 8%,initial pH 5.5,fermentation temperature 35 ℃,rotation speed 150 r/min,the volume of inoculum broth 25 ml,C content 1.0% and N content 0.5%. [Conclusion] Under the optimum fermentation conditions,α-amylase activity reached 31.4 U/ml,which was 65.3 % higher than that before optimization. 展开更多
关键词 ALPHA-AMYLASE Enzyme activity FERMENTATION Optimization
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Optimization of Culture Conditions for Production of Cellulase by a Thermophilic Bacillus Strain 被引量:3
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作者 Zambare Vasudeo Christopher Lew 《Journal of Chemistry and Chemical Engineering》 2011年第6期521-527,共7页
The production of cellulase in Bacillus amyloliquefaciens UNPDV-22 was optimized using response surface methodology (RSM). Central composite design (CCD) was used to study the interactive effect of culture conditi... The production of cellulase in Bacillus amyloliquefaciens UNPDV-22 was optimized using response surface methodology (RSM). Central composite design (CCD) was used to study the interactive effect of culture conditions (temperature, pH, and inoculum) on cellulase activity. Results suggested that temperature and pH all have significant impact on cellulase production. The use of RSM resulted in a 96% increase in the cellulase activity over the control of non-optimized basal medium. Optimum cellulase production of 13 U/mL was obtained at a temperature of 42.24 ℃, pH of 5.25, and inoculum size of 4.95% (v/v) in a fermentation medium containing wheat bran, soybean meal and malt dextrin as major nutritional factors. 展开更多
关键词 Cellulase production Bacillus amyloliquefaciens culture conditions response surface methodology central compositedesign.
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A Greedy Algorithm for Task Offloading in Mobile Edge Computing System 被引量:32
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作者 Feng Wei Sixuan Chen Weixia Zou 《China Communications》 SCIE CSCD 2018年第11期149-157,共9页
Mobile edge computing (MEC) is a novel technique that can reduce mobiles' com- putational burden by tasks offioading, which emerges as a promising paradigm to provide computing capabilities in close proximity to mo... Mobile edge computing (MEC) is a novel technique that can reduce mobiles' com- putational burden by tasks offioading, which emerges as a promising paradigm to provide computing capabilities in close proximity to mobile users. In this paper, we will study the scenario where multiple mobiles upload tasks to a MEC server in a sing cell, and allocating the limited server resources and wireless chan- nels between mobiles becomes a challenge. We formulate the optimization problem for the energy saved on mobiles with the tasks being dividable, and utilize a greedy choice to solve the problem. A Select Maximum Saved Energy First (SMSEF) algorithm is proposed to realize the solving process. We examined the saved energy at different number of nodes and channels, and the results show that the proposed scheme can effectively help mobiles to save energy in the MEC system. 展开更多
关键词 mobile edge computing task off- loading greedy choice energy resource allo- cation
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