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Universal design of three-dimensional porous graphene-iron based promotors for kinetically rationalized lithium-sulfur chemistry
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作者 Hua Gao Yunfeng Zhang +6 位作者 Menglei Wang Ruoxuan Yang Shuai Feng Xuan Cao Yaping Zhang Zhongyuan Lu Yingze Song 《Journal of Energy Chemistry》 2025年第1期192-200,共9页
Lithium-sulfur(Li-S)batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy density.Nevertheless,notorious polysulfide shuttling and ret... Lithium-sulfur(Li-S)batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy density.Nevertheless,notorious polysulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S batteries.While rationally designed highly active electrocatalysts can facilitate polysulfide conversion,the universal and scalable synthesis strategies need to be developed.Herein,a universal synthetic strategy to construct a series of three-dimensional(3D)porous graphene-iron(3DGr-Fe)based electrocatalysts involving 3DGr-FeP,3DGr-Fe_(3)C,and 3DGr-Fe_(3)Se_(4)is exploited for manipulating the Li-S redox reactions.It has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium polysulfide conversion,thereby bolstering the overall electrochemical performance.The Li-S battery with the 3DGr-Fe based electrocatalyst exhibits remarkable capacity retention of 94.8%upon 100 times at 0.2 C.Moreover,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocatalyst delivers superior capacity of 1060.71 mA h g^(-1)and guarantees for the continuous 30 min work of fan toy.This investigation gives comprehensive insights into the design,synthesis,and mechanism of 3DGr-Fe based electrocatalysts with high activity toward efficient and durable Li-S batteries. 展开更多
关键词 Lithium-sulfur battery universal synthesis 3D graphene-iron based promotor ELECTROCATALYSIS
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高校校园社交媒体平台功能需求的KANO模型分析——以“Pocket University”为例 被引量:6
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作者 范哲 朱艳虹 《现代情报》 CSSCI 北大核心 2016年第3期61-67,共7页
社交媒体在高校学生生活中扮演重要角色,在这一形势下,围绕校园生活开发的高校校园社交媒体也逐渐在学生中得到应用。研究学生对于该类平台的功能需求,对推动高校校园社交媒体平台的健康发展具有积极意义。本文以PU平台为例,在参考有关... 社交媒体在高校学生生活中扮演重要角色,在这一形势下,围绕校园生活开发的高校校园社交媒体也逐渐在学生中得到应用。研究学生对于该类平台的功能需求,对推动高校校园社交媒体平台的健康发展具有积极意义。本文以PU平台为例,在参考有关社交媒体及其功能需求文献的基础上,以KNAO模型为理论基础,借助访谈、问卷调查对高校学生的PU平台各功能项的质量属性进行归纳,根据各类质量属性分析其功能需求,最后基于研究结论对平台改进提出相关建议。 展开更多
关键词 高校 社交媒体 功能需求 KANO模型 PU平台
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Spelling Errors in University Students' English Writing
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作者 王祥德 邓兆红 《英语广场(学术研究)》 2012年第9期76-77,80,共3页
This paper investigated the spelling errors made by university students in Hong Kong.By analyzing the spelling errors in the untimed essays and exam scripts,we found that students are prone to make more spelling mista... This paper investigated the spelling errors made by university students in Hong Kong.By analyzing the spelling errors in the untimed essays and exam scripts,we found that students are prone to make more spelling mistakes in exam scripts,the same type of errors occur in both of the two kinds of texts;and their ranks of the frequency also are the same. 展开更多
关键词 spelling errors university students ENGLISH
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Current Situation of University Bilingual Teaching and Countermeasures Analysis
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作者 姜有为 《海外英语》 2012年第21期263-265,共3页
The development of education in China has become increasingly international.Therefore,carrying out bilingual teach ing in Universities is of great significance to cultivating international talents.However,the current ... The development of education in China has become increasingly international.Therefore,carrying out bilingual teach ing in Universities is of great significance to cultivating international talents.However,the current bilingual teaching in Universi ties of our country is not optimistic,facing many difficulties and challenges.In order to provide students with advanced interna tional and dynamic culture,educators should continue to explore research and analyze bilingual teaching rationally and work out effective measures. 展开更多
关键词 BILINGUAL TEACHING MEASURE university
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Tongji University 被引量:2
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作者 余中奇 叶曼 《建筑技艺》 2011年第5期220-223,共4页
1“竹屋”策略2010年7月,太阳能十项全能最后阶段的竞赛展出阶段在马德里皇宫边Manzanares河畔进行,各学校将设计一座投影面积不大于74m2、室内面积不小于42m2的太阳能住宅.作为第一次参加此项竞赛的亚洲队伍,同济大学的参赛作品“竹屋... 1“竹屋”策略2010年7月,太阳能十项全能最后阶段的竞赛展出阶段在马德里皇宫边Manzanares河畔进行,各学校将设计一座投影面积不大于74m2、室内面积不小于42m2的太阳能住宅.作为第一次参加此项竞赛的亚洲队伍,同济大学的参赛作品“竹屋”策略的形成受到了各方面因素的影响;一方面,带着挖掘传统住宅文化的节能要素的初衷,将反曲屋盖和庭院式的布局结合到了作品中;另一方面,传统要素的技术可能性得以与现代太阳能节能住宅技术的需求结合起来,并成功融入场地条件中;在建筑体系层面,这些要素最终被整合到竹结构装配体系中,而其实现的关键因素则是相关特殊材料的使用,尤其是竹材,体现了中国居住文化与现代太阳能住宅材料要求的完美结合. 展开更多
关键词 太阳能住宅 十项全能 新能源住宅 被动式节能 屋面 Tongji university 反宇 热惰性 太阳能板 保温性能 相变石膏板
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Are University Rankings Statistically Significant?A Comparison among Chinese Universities and with the USA 被引量:1
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作者 Loet Leydesdorff Caroline SWagner Lin Zhang 《Journal of Data and Information Science》 CSCD 2021年第2期67-95,共29页
Purpose:Building on Leydesdorff,Bornmann,and Mingers(2019),we elaborate the differences between Tsinghua and Zhejiang University as an empirical example.We address the question of whether differences are statistically... Purpose:Building on Leydesdorff,Bornmann,and Mingers(2019),we elaborate the differences between Tsinghua and Zhejiang University as an empirical example.We address the question of whether differences are statistically significant in the rankings of Chinese universities.We propose methods for measuring statistical significance among different universities within or among countries.Design/methodology/approach:Based on z-testing and overlapping confidence intervals,and using data about 205 Chinese universities included in the Leiden Rankings 2020,we argue that three main groups of Chinese research universities can be distinguished(low,middle,and high).Findings:When the sample of 205 Chinese universities is merged with the 197 US universities included in Leiden Rankings 2020,the results similarly indicate three main groups:low,middle,and high.Using this data(Leiden Rankings and Web of Science),the z-scores of the Chinese universities are significantly below those of the US universities albeit with some overlap.Research limitations:We show empirically that differences in ranking may be due to changes in the data,the models,or the modeling effects on the data.The scientometric groupings are not always stable when we use different methods.Practical implications:Differences among universities can be tested for their statistical significance.The statistics relativize the values of decimals in the rankings.One can operate with a scheme of low/middle/high in policy debates and leave the more fine-grained rankings of individual universities to operational management and local settings.Originality/value:In the discussion about the rankings of universities,the question of whether differences are statistically significant,has,in our opinion,insufficiently been addressed in research evaluations. 展开更多
关键词 RANKING university China Significance of differences INDICATORS
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On Public Signs in Yuxi Normal University
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作者 李娜 《英语广场(学术研究)》 2011年第Z5期72-,74,共2页
With the opening of Chinese colleges and the frequent cultural communication among international colleges, Yuxi Normal University, as a local university, has developed very quickly. More and more public signs appear o... With the opening of Chinese colleges and the frequent cultural communication among international colleges, Yuxi Normal University, as a local university, has developed very quickly. More and more public signs appear on campus, both in Chinese and English. But owing to various causes, many non-standard translations can be seen everywhere. From the aspects of commonly applied functions of public signs in colleges, this thesis analyses some common non-standard translations in directing public signs, restricting public signs and calling public signs, and proposes some suggestions on standard translation. 展开更多
关键词 PUBLIC SIGNS TRANSLATION Yuxi NORMAL university
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Current Status and Enhancement of Collaborative Research in the World:A Case Study of Osaka University 被引量:1
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作者 Shino Iwami Toshihiko Shimizu +4 位作者 Melvin John F.Empizo Jacque Lynn F.Gabayno Nobuhiko Sarukura Shota Fujii Yoshinari Sumimura 《Journal of Data and Information Science》 CSCD 2020年第4期75-85,共11页
Purpose:The purpose of this research is to provide evidence for decision-makers to realize the potentials of collaborations between countries/regions via the scientometric analysis of co-authoring in academic publicat... Purpose:The purpose of this research is to provide evidence for decision-makers to realize the potentials of collaborations between countries/regions via the scientometric analysis of co-authoring in academic publications.Design/methodology/approach:The approach is that Osaka University,which has set a strategy to become a global campus,is positioned to have a leading role to enhance such collaborations.This research measures co-authoring relations between Osaka University and other countries/regions to identify networks for fostering strong research collaborations.Findings:Five countries are identified as candidates for the future global campuses of Osaka University based on three factors,co-authoring relations,GDP growth,and population growth.Research limitations:The main limitation of this study is not being able to use the relations by the former positions of authors in Osaka University,because the data retrieved is limited by the query of the organization name at the first step.Practical implications:The significance of this work is to provide evidence for the university strategy to expand abroad based on the quantity and visualization of trends.Originality/value:With wider practical implementations,the approach of this research is useful in making a strategic roadmap for scientific organizations that intend to collaborate internationally. 展开更多
关键词 Co-authoring university management Overseas strategy Global campus Evidence-based policy-making
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A Study on Translation of University Inspirational Speech In Light of Skopos Theory:A Case Study of 2014 AmericanCommencement Speech
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作者 李娜 何泠静 《海外英语》 2016年第2期95-98,共4页
University Inspirational Speech(UIS), as a significant part of American's higher education, is considered as an encouraging, convincing and motivating lesson to students. UIS might have a great effect on student&#... University Inspirational Speech(UIS), as a significant part of American's higher education, is considered as an encouraging, convincing and motivating lesson to students. UIS might have a great effect on student's outlook of life, helping them to grow as adults armed with noble ideals and entrepreneurial spirits. In order to convey the spirit of original speakers, it is crucial to choose a proper translation theory as a direction. Based on Skopos theory, the paper studied 2014 American UIS translation from the aspect of three rules of Skopos theory, presenting the application of the theory in translation process and to find out how the Skopos theory guides a translation process. 展开更多
关键词 Skopos theory Three RULES AMERICAN university Inspirational Speech(UIS) TRANSLATION strategies
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Why Portfolio Assessment is Introduced to Inner Mongolia University of Science and Technology
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作者 潘若芸 《阴山学刊》 2004年第3期55-58,共4页
The concept of portfolio assessment derived from the field of fine arts. It has been proven an effective learning and assessment tool. In Inner Mongolia University of Science and Technology, the traditional assessment... The concept of portfolio assessment derived from the field of fine arts. It has been proven an effective learning and assessment tool. In Inner Mongolia University of Science and Technology, the traditional assessment is still used. After analysing the benefits and disadvantages, the author is eager to introduce it to Inner Mongolia University of Science and Technology. The problems are also predicted. 展开更多
关键词 内蒙古大学 学习态度 教学方法 社会科学 教师素质
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Canadian University Professors'Perceptions of the Challenges and Support to Engage in Research
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作者 石慧 《海外英语》 2013年第8X期275-279,282,共6页
Research has been an important responsibility for university professors. Although there has been an increased demand for research, few studies have been conducted directly with university professors to obtain their pe... Research has been an important responsibility for university professors. Although there has been an increased demand for research, few studies have been conducted directly with university professors to obtain their perceptions of the challenges the increased focus on research have presented. This study employed a qualitative methodology to inquire into the change of work life bought about by the increased demand for research, and the strategies professors have adopted to balance their teaching, research and service. It also inquired into the barriers to conducting research, and effective support strategies. Some barriers and support identified in this study were in accordance with what previous studies have identified. Perhaps because the professors interviewed were all tenured, they noted that the increased demand for research had not significantly changed their work life. Strategies they used to help them meet the demands for research included, but were not limited to, integrating their teaching and research, and collaborating with others on research projects. Barriers to research included bureaucratic constraints, newness to research, lack of time, and lack of funding. 展开更多
关键词 CANADA university PROFESSORS challenge and SUPPORT
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Student Evaluations as Effective Indicators of Learning Outcomes:Evidence from Japanese University Students in English Language Courses
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作者 贾威 《海外英语》 2014年第23期274-275,共2页
The term"student learning outcomes"refers to the knowledge, skills, and abilitiesthat students achieve during a course, and is typically assessed based on student evaluations conducted at the end of the seme... The term"student learning outcomes"refers to the knowledge, skills, and abilitiesthat students achieve during a course, and is typically assessed based on student evaluations conducted at the end of the semester. Previous studies in this area have investigated the effects of instructional quality and academic demands separately and have been limited primarily to examining findings using student samples fromthe United States. With Japanese college students' perceptions of self-improvementin English language courses as the dependent variable, the present study directly tests the hypothesis that students who perceive instructional quality to be higher, andcourse demands to be greater, also estimate higher levels of self-improvement in English language skills. The analysis provides strong support for this hypothesis.Higher ratings of instruction and academic demands have already beenshown to increase levels of student learning(Greimel-Fuhrmann and Geyer 2003;Nois and Hudson 2006; Mc Fadden and Dart 1992). The present study is the first toprovide direct evidence of the relative importance of student evaluations ofinstructional quality and academic demands as predictors of student learning and thefirst ever to do so with a sample of Japanese college students enrolled in a required English as a foreign language course. Our hypothesis is that Japanese students whoperceive instructional quality to be higher, and course demands to be greater,estimate higher levels of self-improvement in English language skills. Thus we test Japanese students' attitudes toward instructional quality and course demands asindependent variables predicting their perceptions of self-improvement in English language courses. The research focuses on Japanese students' improvement in English language skills because English education in Japan is an arena in which thedebate over limited English proficiency rages on, and because other research suggests reconsideration of English education in light of the demands of the rapidly expanding global era(Amaki 2008). 展开更多
关键词 STUDENT EVALUATIONS JAPANESE university STUDENTS E
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How the University Curriculum Reform Serves for Employment
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作者 陈婷 《海外英语》 2015年第22期272-275,共4页
Confronted with the globalization, nowadays, the level of economy and science develops rapidly, so it is indispensable to carry out the task of cultivating enough talents. In order to satisfy the social development an... Confronted with the globalization, nowadays, the level of economy and science develops rapidly, so it is indispensable to carry out the task of cultivating enough talents. In order to satisfy the social development and cater for market demands, university curriculum reform should be more frequently served for employment, avoiding being always confined to the textbooks and learning pure theory knowledge through memory. In that way, a group of talents who have no knowledge actually will be cultivated, because something that the students learn at the university deviate from the society and after they work on the guard,they need learn the relevant contents from the beginning. To a certain degree, students' career developments are possible to be influenced by the direction and quality of university curriculum reform. To link the university curriculum reform and employment development better, this essay will put forward the effective advice from three aspects. 展开更多
关键词 university CURRICULUM REFORM social DEVELOPMENT market DEMAND EMPLOYMENT DEVELOPMENT
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On the Teaching Methods to Balance Fluency & Accuracy for Chinese University English Learners
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作者 陈嘉 《海外英语》 2016年第16期218-219,共2页
By dividing English learners in Chinese university context into intermediate and advanced level learners, the essay argues that fluency rather than accuracy is needed for most university students. It further discusses... By dividing English learners in Chinese university context into intermediate and advanced level learners, the essay argues that fluency rather than accuracy is needed for most university students. It further discusses some suitable teaching methods in both contexts respectively to balance this pair of objective focus. 展开更多
关键词 FLUENCY ACCURACY teaching methods Chinese university English learners
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Management Communication in University’s Digital Library
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作者 LIU Yuan fang 1, LIN Li 2 (1. Library of Dalian University of Technology, Dalian 116024, China 2. 21 st Century Development and Research Center, Dalian 116023) 《上海交通大学学报》 EI CAS CSCD 北大核心 2003年第S1期250-254,共5页
Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surro... Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surroundings for knowledge accumulation, knowledge transfer and knowledge communication. Management communication covers information transfer and organization cooperation. Compared with traditional library, the management communication in digital library shoulders the commitment to support knowledge innovation. On the basis of analysis of the connotation of digital library, this paper analysed the aspects of management communication, including communicators, communication styles, contents, channels and outer communication, all of which tries to construct an integrated model of management communication in a digital library and turns a library into an actual “knowledge fountain”. 展开更多
关键词 university’s DIGITAL LIBRARY KNOWLEDGE MANAGEMENT MANAGEMENT COMMUNICATION
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Attitude, Perception and Use of E-Learning at Open University Malaysia
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作者 Latifah Abdol Latif Ramli Bahroom +1 位作者 Mansor Fadzil Noor Azina Ismail 《开放教育研究》 CSSCI 2006年第6期62-68,共7页
To ensure the success of the e-learning initiatives,OUM has developed its own e-learning management system,known as myLMS.Since its introduction,many modifications and improvements have been introduced to increase its... To ensure the success of the e-learning initiatives,OUM has developed its own e-learning management system,known as myLMS.Since its introduction,many modifications and improvements have been introduced to increase its effectiveness.It is now timely that OUM take stock of its students'attitudes towards e-learning.Thus,a survey was conducted on about 1,000 students at one of OUM's own learning centres,that is,the Kelantan Regional Centrel.The study indicated that generally the teacher cohort had a somewhat neutral attitude towards e-learning.The use of e-learning was more specifically aimed at achieving short term goals of obtaining good coursework and examination grades by capitalizing on the use of the Discussion Board and Courseware.A closer examination reveals that the females prefer the Discussion Board while the males prefer the Courseware.Learners in the Engineering and English programmes had more positive attitudes towards e-learning compared to learners in the Mathematics and Science programme. Learners with CGPA>3.0 who are categorized as high achievers are more positive towards e-learning as compared to the low achievers(CGPA<3.0).Age difference,learners‘income per month,learners’Internet and e-learning habits were also found to be predictors of attitude towards e-learning. 展开更多
关键词 open university E-LEARNING SURVEY
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An Introduction to Dalian University of Technology Alumni Association Overseas(DUTAAO)
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《大连理工大学学报》 CAS CSCD 北大核心 1998年第S1期123-124,共2页
AnIntroductiontoDalianUniversityofTechnologyAlumniAssociationOverseas(DUTAAO)TheDUTAAO,anon-profitorganizati... AnIntroductiontoDalianUniversityofTechnologyAlumniAssociationOverseas(DUTAAO)TheDUTAAO,anon-profitorganization,wasfoundedinJa... 展开更多
关键词 TECHNOLOGY university DALIAN AN ALUMNI
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Transactions of Nanjing University of Aeronautics & Astronautics Information for Contributors
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《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2019年第4期F0003-F0003,共1页
Transactions of Nanjing University of Aeronautics&Astronautics(TNUAA)is a bimonthly journal facing international academic community.Emphasizing prompt and effective dissemination of key data and new scientific ins... Transactions of Nanjing University of Aeronautics&Astronautics(TNUAA)is a bimonthly journal facing international academic community.Emphasizing prompt and effective dissemination of key data and new scientific insights,TNUAA offers publication of new experimental and theoretical papers bearing on applications to all branches of aeronautics,astronautics and civil aviation. 展开更多
关键词 NANJING Aero university
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Harbin Engineering University
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《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2022年第11期F0003-F0003,共1页
IIarbin Engineering University(IIEU,formerly Ilarbin Shipbuilding Engineering Institute)is a key national university that emerged from the Naval Engineering Department of the PLA Military Engineering Institute,China&#... IIarbin Engineering University(IIEU,formerly Ilarbin Shipbuilding Engineering Institute)is a key national university that emerged from the Naval Engineering Department of the PLA Military Engineering Institute,China's first senior military and technical college,founded in 1953.It is one of the colleges built by the national"Project 211".It has been selected as one of the national"first class universities and first class disciplines"universities and is affliated with the Ministry of Industry and Information Technology,PRC. 展开更多
关键词 universITIES SENIOR founded
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Harbin Engineering University
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《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2021年第1期F0003-F0003,共1页
Harbin Engineering University(HEU,formerly Harbin Shipbuilding Engineering Institute)is a key national university that emerged from the Naval Engineering Department of the PLA Military Engineering Institute,China'... Harbin Engineering University(HEU,formerly Harbin Shipbuilding Engineering Institute)is a key national university that emerged from the Naval Engineering Department of the PLA Military Engineering Institute,China's first senior military and technical college,founded in 1953.It is one of the colleges built by the national"Project 211".It has been selected as one of the national"first class universities and first class disciplines'universities and is affiliated with the Ministry of Industry and Information Technology,PRC. 展开更多
关键词 universITIES founded SENIOR
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