期刊文献+
共找到2,633篇文章
< 1 2 132 >
每页显示 20 50 100
社会与情感能力培养成效的实证研究——基于SSES数据的国际比较分析 被引量:3
1
作者 唐一鹏 黄忠敬 《华东师范大学学报(教育科学版)》 CSSCI 北大核心 2023年第4期33-45,共13页
社会与情感能力是人生成功和幸福的奠基石。2021年SSES(Study on Social and Emotion-al Skills)全球首测结果发布,为开展青少年社会与情感能力的国际比较研究提供了坚实的数据基础。本文运用DEA(Data Envelope Analysis)方法,将班级规... 社会与情感能力是人生成功和幸福的奠基石。2021年SSES(Study on Social and Emotion-al Skills)全球首测结果发布,为开展青少年社会与情感能力的国际比较研究提供了坚实的数据基础。本文运用DEA(Data Envelope Analysis)方法,将班级规模、教师学历、SSES培训、SSES措施、校园活动作为投入变量,将五大能力作为产出变量,对参加本次国际测评的10座城市的1171所中小学进行培养成效评估,结果发现:(1)各城市中小学的社会与情感能力培养成效普遍较高,小学阶段的均值在0.8以上,中学阶段的均值在0.9以上;(2)在小学阶段,苏州学校的培养成效较为突出,不仅均值最高,而且整体属于高水平均衡型;在中学阶段,培养成效较为突出的城市则是伊斯坦布尔,属于高水平均衡型;(3)各城市共有82所高绩效小学和87所高绩效中学,其中伊斯坦布尔和波哥大的占比较大;(4)学校归属感对各城市中小学的社会与情感能力培养成效提升具有重要促进作用。根据以上研究结果,本文建议应该加强社会与情感能力的国际合作与实证研究,在总结苏州成功经验的同时寻找差距补齐短板,将优质均衡作为我国中小学社会与情感能力培养工作的重要目标。 展开更多
关键词 社会与情感能力 sses 国际比较 DEA SBM 随机森林
下载PDF
SSeS超导结的约瑟夫逊效应 被引量:4
2
作者 崔雪梅 关立强 《低温与超导》 CAS CSCD 北大核心 2004年第3期58-60,共3页
以推广的 Jacobson方法 ,从 Ginzburg- L andau方程出发 ,推导出了 SSe S超导结的直流约瑟夫逊效应 ,从而进一步求得了 SSe S超导结的临界电流与温度之间的关系 。
关键词 超导结 约瑟夫逊效应 肖特基势垒 直流约瑟夫逊关系 sses 超导体
下载PDF
SSeS超导结的临界厚度 被引量:1
3
作者 王翠 关立强 《延边大学学报(自然科学版)》 CAS 2001年第2期107-110,共4页
采用Ginzburg Landau方程研究了SSeS超导结的临界厚度问题 .在一定的近似条件下 ,得到了该结临界厚度的计算公式 .
关键词 临界厚度 半导体 约瑟夫森效应 sses超导结 GINZBURG-LANDAU方程 隧道结
下载PDF
SSeS超导结的Josephson效应
4
作者 崔雪梅 关立强 朱爱东 《延边大学学报(自然科学版)》 CAS 2002年第1期25-29,共5页
以推广了的Jacobson方法 ,由Ginzburg Landau方程出发 ,推导出了SSeS超导结的直流Josephson效应 .从而进一步求得了SSeS超导结的临界电流与温度之间的关系 ,以及对结区厚度的依赖性 .
关键词 sses超导结 JOSEPHSON效应 GINZBURG-LANDAU方程 肖特基势垒 直流Josephson关系 N型半导体
下载PDF
Possibility of Inducing Compressive Residual Stresses in Welded Joints of SS400 Steels 被引量:1
5
作者 Quanhong LIN, Jing CHEN and Huaining CHEN Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第6期661-663,共3页
Since the welded constructions produce easily stress corrosion cracking (SCC) or fatigue disruption in corrosive medium or under ripple load, two methods inducing compressive stress on structural surfaces by anti-weld... Since the welded constructions produce easily stress corrosion cracking (SCC) or fatigue disruption in corrosive medium or under ripple load, two methods inducing compressive stress on structural surfaces by anti-welding-heating treatment (AWHT) and explosion treatment (ET) are presented. The results show that they are good ways to resisting SCC on the welded SS400 steel or other components. 展开更多
关键词 In Possibility of Inducing Compressive Residual Stresses in Welded Joints of SS400 Steels SS
下载PDF
EFFECT OF SOIL MOISTURE-ENERGY DISTRIBUTION AND MELTING-FREEZING PROCESSES ON SEASONAL SHIFT IN TIBETAN PLATEAU
6
作者 Yang Meixue 1, Yao Tandong 1, He Yuanqing 1,Toshio Koike 2 2 Nagaoka University o 《地学前缘》 EI CAS CSCD 2000年第S1期441-441,共1页
As one of the major projects of GAME (GEWEX Asian Monsoon Experiment), the GAME\|Tibet aimed to mainly examine the energy and water cycle in Tibetan Plateau and its effects on Asian monsoon. In this paper, based on th... As one of the major projects of GAME (GEWEX Asian Monsoon Experiment), the GAME\|Tibet aimed to mainly examine the energy and water cycle in Tibetan Plateau and its effects on Asian monsoon. In this paper, based on the in\|situ high\|resolution observation data of GAME\|Tibet, the soil energy\|moisture distribution and the melting\|freezing progresses and their effects on seasonal shift were preliminarily discussed.The soil energy\|water distribution and freezing\|melting processes varied at different sites in northern part of Tibetan Plateau. The temporal and spatial variation of the soil moisture content is more complex than that of temperature. The soil moisture content increased with depth in certain layers but decreased in other layers. The freezing and melting processes and the temperature distribution were largely influenced by the existence of higher soil moisture content layer. During summer monsoon, the soil moisture at 10cm at all sites is relatively high, but the spatial difference existed. Generally speaking, the shallow layers start to freeze in October and to melt from April at all sites, with about 6 months frozen period. However, the beginning time of freezing\|melting and frozen period varied at different sites. 展开更多
关键词 SOIL water\|energy distribution SOIL melting\|freezing proce sses SEASONAL SHIFT northern part of TIBETAN plateau
下载PDF
A Study on the Assessment of Sensitivity to Acidification of Waters by Acidification Capacity
7
作者 孟宪林 周定 薛含斌 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第1期49-53,共5页
The buffer capacity of lakewaters and streamwaters in Southwesten China. where serious acidic precipitation has been found, and the changes of buffer capacity during the acidification were examined and analyzed. The r... The buffer capacity of lakewaters and streamwaters in Southwesten China. where serious acidic precipitation has been found, and the changes of buffer capacity during the acidification were examined and analyzed. The results show that the valuation of sensitivity to acidification of lakeweters and streamwaters often disagree with the actual circumstance only by the value of buffer capacity. “Acidification capacity”is firstly proposed to assess the sensitivity to acidification in this paper. Compared with other methods, this methods, this method not only can assess the sensitivity to acidification more effectively, but also can predict the time quantitatively when the acidificafion occures in lakewaters or streamwaters due to its consideration for the quantity of various components and their interrelation and interaction as far as possible. 展开更多
关键词 ss:Acid PRECIPITATION ACIDIFICATION capacity AssesSMENT
下载PDF
Two Processes Comparison by Using Capability Indices C_(pm)
8
作者 K S Chen Jann-Pygn Chen T W Chen 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期188-189,共2页
In recent years, there has been mounting interest i n measuring process performance in manufacturing industry. Based on analyzing the process capability indices, a production department can trace and improve a poor pr... In recent years, there has been mounting interest i n measuring process performance in manufacturing industry. Based on analyzing the process capability indices, a production department can trace and improve a poor process to enhance quality levels and satisfy customers. The process capabilit y analysis can also serve as an important reference for making decisions for imp roving the global quality of all products. Since C p and C pk are failed to account for process centering, the index C pm is developed. The index C pm takes the process centering into consideration and is su itable for the processes with nominal-the-best type. There are other indices l ike C pu and C pl, and those indices are used for unilateral s pecification processes. Chou (1994) developed a procedure using estimators of C p, C pu and C pl for practitioners to determine whether two p rocesses are equal capability or not. For bilateral specifications processes, i ndex C p is failed to measure process yield and process centering. Thus, th e index C pm is used to develop a similar procedure for practitioners t o determine whether two processes are equal capability or not. The decisions mad e using the procedure to select the better supplier are, of course, more reliabl e. 展开更多
关键词 process capability indices test statistic proce ss yield process centering
下载PDF
On Certain Classes of p-Valent Functions
9
作者 M. K. AOUF (Dept. of Math. Faculty of Science Univ. of Mansoura,Mansoura,Egypt) 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1994年第2期1-5,共5页
There are many classes of analytic and p-valent functions in the unit disc U. We shall consider about the special classes Sλ (p,α,β) and Cλ (P, α, β)(0≤λ≤1, 0≤α≤1, p∈N={1,2,…}) of analytic and p-valent f... There are many classes of analytic and p-valent functions in the unit disc U. We shall consider about the special classes Sλ (p,α,β) and Cλ (P, α, β)(0≤λ≤1, 0≤α≤1, p∈N={1,2,…}) of analytic and p-valent functions in the unit disc U. The object of the present paper is to show some distortion theorems and some interesting coefficient estimates for the classes Sλ(p, α,β),Cλ (p, α, β), S0 (p, α, β), C0(p,α,β), Sλ(P, α, 1) and Cλ (p, α, 1). 展开更多
关键词 ss: ANALYTIC P-VALENT STARLIKE COEFFICIENT
下载PDF
A Neural Network Controller for Basis-weight Control of Papermaking Processes
10
作者 胡恒章 沈毅 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第1期29-33,共5页
ANeuralNetworkControllerforBasis-weightControlofPapermakingProcessesHUHengzhang;SHENYi(胡恒章);(沈毅)(Dept.ofCont... ANeuralNetworkControllerforBasis-weightControlofPapermakingProcessesHUHengzhang;SHENYi(胡恒章);(沈毅)(Dept.ofControlEngineering,Ha... 展开更多
关键词 ss: NEURAL networks BASIS WEIGHT CONTROL long system response delay PAPERMAKING process
下载PDF
Numerical Simulation of Al-Si Alloys Filling in EPC Processes
11
作者 魏尊杰 安阁英 常庆明 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第3期75-78,共4页
NumericalSimulationofAl-SiAlloysFillinginEPCProcessesWEIZunJie;ANGeying;CHANGQingming魏尊杰,安阁英,常庆明(Dept.ofMate... NumericalSimulationofAl-SiAlloysFillinginEPCProcessesWEIZunJie;ANGeying;CHANGQingming魏尊杰,安阁英,常庆明(Dept.ofMaterialEngineering,H... 展开更多
关键词 ss:Evaporative PATTERN CASTING numerical simulation FILLING process
下载PDF
A Logical Approach to Emulation of Higher Mental Processes
12
作者 陈志强 洪家荣 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第2期33-38,共6页
In the discipline of artificial intelligence,the problem of emulating higher mental processes such as the cognitive learning still remains open.Here a logical approach to higher mental processes, including insight lea... In the discipline of artificial intelligence,the problem of emulating higher mental processes such as the cognitive learning still remains open.Here a logical approach to higher mental processes, including insight learning and intuition acquisition,is presented.This approach is based on the conventional logic,including deduction, induction,and abduction.The combined deductive reasoning and abductive reasoning or alternatively predicate completion are used for insight learning,and an integrated inductive learning is used to acquire the intuition of the rule-based expert systems.The application of the approach to real-world problems is also described in detail. 展开更多
关键词 ss:Insight learning INTUITION acquisition ABDUCTION induction nonmonotonic REASONING
下载PDF
Comprehensive Analysis of Stress-Strain in Typical Metal Forming Processes 
13
作者 王仲仁 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1994年第2期62-66,共5页
The corresponding positions of different metal plastic working processes in the plane stress state on a Mises yield ellipse are described.The paper points out that the forming of a workpiece inside its die is correspo... The corresponding positions of different metal plastic working processes in the plane stress state on a Mises yield ellipse are described.The paper points out that the forming of a workpiece inside its die is corresponding to a mass point moving along the ellipse and that its dimensional variation tendency in all directions can be judged according to a correspondence rule of the stress-strain order offered by the author.In addition,the paper also presents the corresponding three-dimensional positions of different metal plastic working processes on the Mises cylinder,from which the deformation force and technological plasticity required in different processes can be compared,and the dimensional variation tendency can be predicted.The analysis method used in this paper is not to calculate the variation of each stress component(σx,σy,σz) by convention,but to emphasize the variation of the stress state in the typical position,which is expressed correspondingly as the varying locus of points in principal stress space,and then based on the analysis the strain result is judged. 展开更多
关键词 ss:Stress-Strain RELATION stress space metal FORMING YIELD LOCUS
下载PDF
A Glivenko-Cantelli Theorem and Weak Convergence for Empirical Processes of Associated Sequences for Discrete Case
14
作者 关忠 曲绍平 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第1期1-4,共4页
Under the conditions on covariances of the original random variables, a Glivenko-Cantelli theorem for associated sequences and weak convergence for empirical processes of stationary associated sequences are obtained, ... Under the conditions on covariances of the original random variables, a Glivenko-Cantelli theorem for associated sequences and weak convergence for empirical processes of stationary associated sequences are obtained, assuming the random variables to be discrete. 展开更多
关键词 ss:Glivenko-Cantelli THEOREM ASSOCIATED sequence COVARIANCE structure positively DEPENDENCE
下载PDF
Information and Communication Services for Business Processes in CIM Integrating Infrastructure
15
作者 綦建平 王刚 +1 位作者 徐晓飞 姚万生 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第1期99-102,共4页
A plan of information and communication services in the HIT-IIS, a prototype system of CIM integrating infrastructure is introduced. These two classes of services provide the basic information supporting platform for ... A plan of information and communication services in the HIT-IIS, a prototype system of CIM integrating infrastructure is introduced. These two classes of services provide the basic information supporting platform for CIM system and CIM integrating infrastructure, based on the distributed database syestem and computer network system. The structure, organization and workflow of these services are given. 展开更多
关键词 ss: COMPUTER integrated manufacturing(CIM) CIM integrating INFRASTRUCTURE INFORMATION technology INFORMATION integration
下载PDF
Service and Environment for the Enterprise Business Processes in CIM Integrating Infrastructure
16
作者 王刚 姜华 +1 位作者 徐晓飞 周世意 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第3期83-87,共5页
The controlling and processing service and supporting environment for the enterprise business processes in HIT-IIS, a prototype of the CIM-OSA-IIS, are introduced.The detailed design about the business process service... The controlling and processing service and supporting environment for the enterprise business processes in HIT-IIS, a prototype of the CIM-OSA-IIS, are introduced.The detailed design about the business process services and the front-end services of HIT-IIS art given. It is focused on the structure, organization and workflow of the services ard environment. 展开更多
关键词 ss:Computer integrated manufacturing (CIM) CIM integrating INFRASTRUCTURE CIM stpporting ENVIRONMENT BUSINESS process services application software Platform
下载PDF
Comparative Assessment of Corrosion Behaviour of MCS and KS7 SS in Saline and Carbonate Environments
17
作者 O. O. Ajide K. W. Agara 《Journal of Minerals and Materials Characterization and Engineering》 2012年第8期836-840,共5页
The major objective of this experimental study is to investigate and compare the corrosion resistance of medium Carbon steel (MCS) and KS7 stainless steel in saline and sodium carbonate environments. The MCS and KS7 S... The major objective of this experimental study is to investigate and compare the corrosion resistance of medium Carbon steel (MCS) and KS7 stainless steel in saline and sodium carbonate environments. The MCS and KS7 SS were exposed to 0.5 M each of NaCl and Na2CO3 solutions for a period of 36 days. The weight loss was taken every 3 days in order to evaluate CPR. The results obtained showed that KS7 SS generally offers a better corrosion resistance than the MCS in the selected media. While MCS is found to be inappropriate alloy in saline and sodium carbonate environments, KS7 SS is an unfailing choice material for manufacturing machines and other engineering amenities in which their service lives are predominant in Na2CO3 medium and fairly pleasing in NaCl environment. 展开更多
关键词 MCS KS7 SS CPR SALINE and Sodium CARBONATE
下载PDF
家庭与学校支持如何影响中小学生的创造力?——基于社会与情感能力测评数据的国际比较分析 被引量:1
18
作者 王倩 唐一鹏 《华中师范大学学报(人文社会科学版)》 CSSCI 北大核心 2024年第2期179-188,共10页
21世纪以来,创新成为世界上几乎所有发达国家追求的共同目标,创造力的发展也逐渐成为各国教育努力的重点方向。基于OECD 2021年发布的社会与情感能力测评的全球报告,对比中国苏州与OECD国家参与测评城市的数据,探讨中小学生创造力的影... 21世纪以来,创新成为世界上几乎所有发达国家追求的共同目标,创造力的发展也逐渐成为各国教育努力的重点方向。基于OECD 2021年发布的社会与情感能力测评的全球报告,对比中国苏州与OECD国家参与测评城市的数据,探讨中小学生创造力的影响因素,并采用两水平线性模型分析家庭及学校因素对于中小学生创造力的影响效应。研究发现,参与本次测评的中国苏州学生在惩罚型父母、亲子关系、课外活动、师生关系以及创造力自我评价上的得分都显著高于OECD国家城市学生,而在家庭社会经济地位和理解型父母得分上却显著低于后者。学生创造力发展存在显著的年龄与性别差异;家庭支持对学生创造力发展影响显著,但在具体维度的影响效应上有所区别;学校支持对于学生创造力发展具有显著的正向影响。学生的创造力水平是社会进步与个人发展的关键因素,基于此,应当关注个体差异,激发创造力的发展潜能;重视家庭支持,营造创造力发展的家庭氛围;加强学校支持,提升学生创造力思维品质。 展开更多
关键词 家庭支持 学校支持 创造力 sses
下载PDF
多失效模式与变量相关的管道失效概率预测
19
作者 李长俊 曾江浩 杨帆 《中国安全科学学报》 CAS CSCD 北大核心 2024年第5期36-43,共8页
针对腐蚀管道多失效模式相互竞争、变量非独立的特点以及小失效概率预测效率低的问题,提出一种基于子集模拟法(SS)的腐蚀管道时变失效概率预测方法。基于泄漏与爆裂失效的极限状态函数,考虑泄漏与爆裂失效的竞争关系,构建管道竞争失效... 针对腐蚀管道多失效模式相互竞争、变量非独立的特点以及小失效概率预测效率低的问题,提出一种基于子集模拟法(SS)的腐蚀管道时变失效概率预测方法。基于泄漏与爆裂失效的极限状态函数,考虑泄漏与爆裂失效的竞争关系,构建管道竞争失效概率预测模型;使用Nataf转换方法描述模拟样本中缺陷深度与长度的相关性,提出考虑失效模式竞争性、变量相关性的腐蚀管道失效概率求解方法,并采用蒙特卡罗模拟(MCS)验证该方法;应用上述方法,探究缺陷深度和长度的弱相关性(相关系数0~0.3)对管道服役15年内失效概率的影响。结果表明:失效概率大于10-6时,使用该方法的计算结果与MCS计算结果基本相同,计算效率高于MCS,且可预测概率水平为10-12的极小概率事件;管道服役15年内,缺陷变量相关系数越大,管道爆裂失效概率越大,越早到达爆裂失效概率阈值年限;而随着相关系数的增大,泄漏失效概率越小,越晚达到泄漏失效概率阈值年限;在预测后期,相关系数增大对2种失效概率的影响均减弱。 展开更多
关键词 失效模式 变量相关 失效概率 腐蚀管道 子集模拟(SS) Nataf转换
下载PDF
AI赋能哲学社会科学研究、传播及评价
20
作者 苏新宁 何一民 +17 位作者 杨红艳 周维东 徐继敏 刘明 彭国莉 王竹 徐亮 韩普 蒋勋 胡琳 夏琬钧 周佩 李西臣 肖磊 韩毅 王丹 唐普 刘选 《西华大学学报(哲学社会科学版)》 2024年第6期1-12,共12页
人工智能正在改变整个人类社会,丰富人们的文化生活,促进科技创新与发展,是各行各业“新质化”的促进剂。人工智能可为哲学社会科学提供高效的研究工具和研究场景,将深刻影响哲学社会科学研究、传播及评价的方方面面。加速人工智能在哲... 人工智能正在改变整个人类社会,丰富人们的文化生活,促进科技创新与发展,是各行各业“新质化”的促进剂。人工智能可为哲学社会科学提供高效的研究工具和研究场景,将深刻影响哲学社会科学研究、传播及评价的方方面面。加速人工智能在哲学社会科学研究、传播及评价领域的深入应用,提升哲学社会科学研究效率,促进哲学社会科学的创新与发展,构建自主知识体系,是当下哲学社会科学工作者的重要使命。为推进AI赋能哲学社会科学(AI4SS),2024年9月28日,由西华大学、四川省社会科学学术期刊协会主办,西华大学学术期刊部、四川省社会科学重点研究基地四川学术成果分析与应用研究中心承办的“AI赋能社科研究与评价天府论坛”在西华大学举行。来自南京大学、中国人民大学、四川大学等高校与科研机构的20位专家学者,从不同学科、研究领域出发,就人工智能赋能哲学社会科学研究、传播及评价进行了深入交流。文章为20位专家学者在论坛上所作报告的主要观点。这些报告议题包括AI赋能人文社科研究方法的变革,法学、教育学、经济学、图书情报学、新闻传播等社会学科视域下的人工智能,AI辅助社会科学研究的学术伦理,人工智能在医疗健康、大宗商品价格风险监测、大学生高阶思维能力培养等方面的应用,AI赋能学术期刊出版与传播,AI赋能哲学社会科学评价新模式、新平台、新场景,等等。这些议题共同描绘了一个由AI技术驱动的多学科融合与创新的新时代。 展开更多
关键词 生成式人工智能 人工智能 数智时代 AI4SS 哲学社会科学 学术研究 学术传播 学术评价 学术伦理 人文危机 预印本评价 知识服务 智能评价 智能外包 医疗健康 国家金融安全 高阶思维能力 法学 教育学 经济学 图书情报学 新闻传播
下载PDF
上一页 1 2 132 下一页 到第
使用帮助 返回顶部