期刊文献+
共找到346篇文章
< 1 2 18 >
每页显示 20 50 100
Electromotive Force Calculation of Fifteen-phase Induction Motors With Non-sinusoidal Supply 被引量:3
1
作者 WANG Dong WU Xinzhen +1 位作者 GUO Yunjun CHEN Junquan 《中国电机工程学报》 EI CSCD 北大核心 2013年第9期I0017-I0017,共1页
非正弦供电十五相感应电机基波磁动势正幅值与3次谐波磁动势负幅值不在同一位置时的叠加磁动势波形称为常规磁动势波形,此种情况下感应电动势的计算是该种电机电磁性能分析与优化设计的前提。与正弦磁动势或理想叠加磁动势不同,常规磁... 非正弦供电十五相感应电机基波磁动势正幅值与3次谐波磁动势负幅值不在同一位置时的叠加磁动势波形称为常规磁动势波形,此种情况下感应电动势的计算是该种电机电磁性能分析与优化设计的前提。与正弦磁动势或理想叠加磁动势不同,常规磁动势下电机的感应电动势与激磁电流相位因磁路饱和不再相差/2,为此提出把感应电动势作为激磁电流流控电压源的处理方法。鉴于电机每半个极下气隙磁密波形不再相同的情况,提出基于电机1个极距区域的拓展分布磁路法计算气隙磁密,进而求出基波感应电动势与3次谐波感应电动势。非正弦供电十五相感应电机样机的感应电动势计算值与实测值相互吻合,说明了拓展分布磁路法计算感应电动势有效且具有较高的准确度。 展开更多
关键词 正弦电源 感应电机 计算 电动势 三相异步电动机 五相 感应电动机 定子绕组
下载PDF
Suggestions on How to Stimulate Non-English Major Sophomores' English Learning Motivation
2
作者 孙秀丽 《疯狂英语(教师版)》 2013年第4期104-107,共4页
Many researchers regard motivation as a very important factor for second language learners to acquire the language successfully.Motivated students will perform better than unmotivated students in language learning,the... Many researchers regard motivation as a very important factor for second language learners to acquire the language successfully.Motivated students will perform better than unmotivated students in language learning,therefore,they will develop the potential of second language skills better.This research studied the motivation types of 255 sophomores from Huanghuai University.A questionnaire based on the one designed by Qin Xiaoqing and Wen Qiufang was adopted.The results demonstrate that the motivation possessed by sophomores was not beneficial towards improving their English learning.In order to present a good guide to students’English learning,the author provides several pieces of advice. 展开更多
关键词 English learning motivATION non-English major sophomores
下载PDF
A Study on the Relationship between Intrinsic Motivation and Learner Autonomy in English Learning of Non-English Major College Students
3
作者 王丹 胡家英 《海外英语》 2019年第4期242-244,共3页
To provide scientific feedback and advice on improving the English autonomous learning ability of non-English majorsand in improving the quality of English for non-English majors, it is urgent to study the relationshi... To provide scientific feedback and advice on improving the English autonomous learning ability of non-English majorsand in improving the quality of English for non-English majors, it is urgent to study the relationship between intrinsic motivationand learner autonomy. Based on the theory of intrinsic motivation and learner autonomy, a questionnaire survey is used to investi-gate non-English students at Northeast Agricultural University. The obtained data through SPSS analysis and case simulation showthat there is a positive correlation between intrinsic motivation and learner autonomy, which proves the necessity and feasibility ofconstructing autonomous learning factor model to improve the self-learning ability of contemporary non-English majors. 展开更多
关键词 non-ENGLISH major FRESHMEN LEARNING motivATION intrinsic motivATION learner autonomy LEARNING strategy
下载PDF
Research on the Current Situation and Cultivation of English Learning Motivation of Non-English Majors
4
作者 梅雪 《海外英语》 2019年第15期104-105,共2页
English is not only a language,but also a tool.There are many factors that affect students’English learning quality and ef?ficiency,among which the biggest one is learning motivation.At present,some non-English major... English is not only a language,but also a tool.There are many factors that affect students’English learning quality and ef?ficiency,among which the biggest one is learning motivation.At present,some non-English majors in our country lack the motiva?tion of English learning,and the phenomenon of students’grade differentiation becomes more and more obvious,which seriously affects the process and quality of English teaching in the whole class.Analyzing and exploring the present situation and cultivation of English learning motivation of non-English majors can improve the quality and level of English learning of Chinese college stu?dents as a whole. 展开更多
关键词 non-ENGLISH Majors COLLEGE Students English Learning motivATION Current SITUATION and CULTIVATION
下载PDF
A Survey of Learning Motivation among Junior and Senior English Majors in Non-governmental Universities——A Case Study in Ningbo Dahongying University
5
作者 顾倩倩 《海外英语》 2017年第4期223-224,共2页
Motivation is an important factor to English learning,it plays an important role.In this thesis,the instrument used in the study is a questionnaire,and this thesis was conducted on December 5th,2016 at Ningbo Dahongyi... Motivation is an important factor to English learning,it plays an important role.In this thesis,the instrument used in the study is a questionnaire,and this thesis was conducted on December 5th,2016 at Ningbo Dahongying University involving 182 students.Based on the questionnaire investigation,this thesis discusses the learning motivation of English major juniors and seniors in Ningbo Dahongying University from the motivation types,factors and strategies. 展开更多
关键词 Learning motivation non-government Universities Junior and Senior Students English majors
下载PDF
Relationship between English Leaming Motivation and SCET-3 Scores of Non-English Major Students in CDSI
6
作者 ZHANG Weiying QINXuetao 《International English Education Research》 2017年第1期112-114,共3页
下载PDF
肥胖儿童non-HDL-C、remnant cholesterol与亚临床动脉粥样硬化的关系 被引量:4
7
作者 焦朝艳 刘戈力 +4 位作者 鲍鹏丽 魏莹 杨箐岩 郑荣秀 赵菁 《天津医科大学学报》 2014年第1期25-28,共4页
目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体... 目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体质量儿童30例为III组(对照组)。比较3组儿童血脂指标,对肥胖组各项血脂指标与血浆致动脉粥样硬化指数(AIP)进行相关性分析,肥胖患儿体质指数、血脂指标与颈动脉内径、内膜-中层厚度(c-IMT)、血流参数进行相关性分析。结果:I组、II组的TG、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、non-HDL-C、remnant cholesterol、AIP均较对照组升高,高密度脂蛋白胆固醇(HDL-C)较对照组降低,且I组的remnant cholesterol、AIP均较II组升高。肥胖组儿童AIP与TG、non-HDL-C、remnant cholesterol呈正相关,与HDL-C呈负相关。37例行颈动脉超声检查的肥胖儿童的c-IMT较正常儿童的增厚。结论:non-HDL-C、remnant cholesterol在肥胖儿童亚临床AS中有重要作用,在肥胖儿童血脂异常的治疗中应关注non-HDL-C、remnant cholesterol的变化。 展开更多
关键词 儿童肥胖 亚临床动脉粥样硬化 non—HDL—C REMNANT CHOLESTEROL 血浆致动脉粥样硬化指数 颈动脉内膜-中层厚度
下载PDF
Analysis of Numerical Results in High Temperature Congealment and Chemistry Non-equilibrium Flow Field
8
作者 Hong-tao Zheng Zhi-yong Tan +2 位作者 Hai-ou Sun Chun-liang Zhou Zhi-ming Li 《Journal of Marine Science and Application》 2002年第1期26-34,共9页
Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved... Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved. In this paper, using internalequivalent heat area in place of electric are that created Ohm heat, the flow fields of thermodynamic equilibrium chemistry con-gealment and chemistry non-equilibrium in the plasma generator were simulated. The influences of the inlet prerotation angleof air, the inlet total pressure of air and the airflow compression angle of spray nozzle on the temperature on the surface of elec- 展开更多
关键词 plasma GENERATOR CHEMISTRY non - EQUILIBRIUM IGNITION technique numerical calculation
下载PDF
Turbulent Flow Action of Pulp in Wet - Laid Non - Woven Processes
9
作者 程隆棣 黄秀宝 于修业 《Journal of China Textile University(English Edition)》 EI CAS 2000年第3期57-59,共3页
The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and prac... The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and practice.The suitable use of the imported velocity of pulp is very important in producing wet-laid products of good quality. 展开更多
关键词 WET - laid non - woven fiber PULP FLOW TURBULENT FLOW layer FLUID occluded FLUID .
下载PDF
Effectiveness of Teacher's Non-verbal Communication in English Classrooms of Primary Schools in China
10
作者 孔燕 《海外英语》 2013年第14期79-81,共3页
While there is a lot of research in non-verbal communication, a limited of studies are about the situation in primary schools in Chinese context. In this paper, I will argue for the relationship between teacher's ... While there is a lot of research in non-verbal communication, a limited of studies are about the situation in primary schools in Chinese context. In this paper, I will argue for the relationship between teacher's non-verbal communication and student's learning interests in primary school. 展开更多
关键词 non-VERBAL communication PRIMARY SCHOOL learning m
下载PDF
MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2
11
作者 JUNQI GUO YUN YANG +6 位作者 WEI ZHAO ZHONGHAI YAN XIA YANG YUNFEI YAN RUIMIN HAO JINXIA HU FEI JIAO 《BIOCELL》 SCIE 2021年第3期627-638,共12页
Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are... Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are not to be well studied.Here,we validated that the expression of miR-16-5p was decreased significantly in NSCLC samples and cell lines.The correlation between the clinicopathological features of NSCLC and the miR-16-5p expression showed that the expression of miR-16-5p in non-small cell lung cancer was linked with the advanced TNM stage,positive lymph node metastasis,with short overall survival(OS).Also,a negative correlation between miR-16-5p and Fermitin family member 2(FERMT2)was observed,implying there may be a potential link about their regulation.The hypothesis was further confirmed by in-silico analysis and dual-luciferase reporter assay.Moreover,we demonstrated that the transfections of miR-16-5p mimics could alter some biological characteristics of NSCLC cells remarkably accomplished by the expression variance of FERMT2 in vitro and in vivo assays.Summarily,this study demonstrated that miR-16-5p,as a tumor suppression factor in NSCLC by targeting FERMT2,could serve as one promising biomarker in the prediction for NSCLC patients. 展开更多
关键词 miR-16-5p non–small-cell lung cancer(NSCLC) Fermitin family member 2(FERMT2) APOPTOSIS INVASION Overall survival(OS)
下载PDF
Generational Gap: Intrinsic (Non-monetary) Versus Extrinsic (Monetary) Rewards in the Workforce
12
作者 Charles Chekwa Mmutakaego Chukwuanu Daisey Richardson 《Chinese Business Review》 2013年第6期414-424,共11页
关键词 劳动力 货币 奖励 高生产率 生理需求 需求层次 安全需求 自我实现
下载PDF
How can a Student of Non-English Major Find his/her Own Way of Learning English
13
作者 苏妍屏 《海外英语》 2011年第9X期101-102,共2页
Analysis of the current situation of non-English majors in learning English.Applied with learning motivation theory,pointing out the factors that influence the efficiency of learning,a set of methods are proposed to h... Analysis of the current situation of non-English majors in learning English.Applied with learning motivation theory,pointing out the factors that influence the efficiency of learning,a set of methods are proposed to help non-English majors find their own way of learning English,in attempt to help them learn English more efficiently. 展开更多
关键词 English-learning non-ENGLISH majored students WAY of learning motivation
下载PDF
A Study on Factors that Affect Motivation in English Learning of NonEnglish Major Cadets
14
作者 叶楠 《海外英语》 2017年第19期227-228,共2页
Motivation is one of the critical factors that affect foreign language learning. This study attempts to explore the factors that affect motivation in English learning of non-English major cadets. An investigation is c... Motivation is one of the critical factors that affect foreign language learning. This study attempts to explore the factors that affect motivation in English learning of non-English major cadets. An investigation is conducted in a military academy in southwest China, in which a Likert scale questionnaire is adopted. Through data analysis, eight factors are found to affect cadets' English learning motivation. Moreover, suggestions are provided to shed light on English teaching and learning in military academies. 展开更多
关键词 motivATION English learning non-English major CADETS military academies
下载PDF
广州献血新规对无偿献血行为影响的研究
15
作者 骆洁贞 谭咏恩 +4 位作者 何博 张婷 吴岚 何彦霖 黄小敏 《黑龙江医学》 2024年第7期836-839,共4页
目的:探索广州献血新规对无偿献血行为的影响,为献血招募和新规宣传工作提供科学的依据。方法:采用分层抽样的方法,于广州市区11个固定献血点选取3300名无偿献血者作为调查对象进行问卷调查,问卷结果采用SPSS 23.0进行协方差数据分析、S... 目的:探索广州献血新规对无偿献血行为的影响,为献血招募和新规宣传工作提供科学的依据。方法:采用分层抽样的方法,于广州市区11个固定献血点选取3300名无偿献血者作为调查对象进行问卷调查,问卷结果采用SPSS 23.0进行协方差数据分析、Spearman相关数据分析、调节效应层级回归数据分析。结果:年龄、收入、献血次数、献血荣誉感和社会联结感都与未来一年的献血计划相关(P<0.05);献血次数各组间的心理幸福感指数差异具有统计学意义(F=4.962,P<0.05);献血次数、经济动机、实现型动机、幸福感指数四个变量两两间均存有正相关(P<0.05);献血新政中的实现型动机在献血次数和幸福感指数间起调节作用(△R^(2)=0.256,△F=15.462,P<0.05)。结论:广州采供血机构应针对新规中的实现型动机制定招募措施,高效地引导献血行为。 展开更多
关键词 无偿献血 献血招募 献血动机
下载PDF
基于信息干预的慢行出行行为
16
作者 邬岚 成迎吉 +2 位作者 尹超英 任斯奇 陆豪冬 《科学技术与工程》 北大核心 2024年第19期8314-8322,共9页
为研究影响出行者选择慢行出行行为的信息及其影响程度,基于保护动机理论分析慢行出行行为的信息干预作用机制,通过慢行交通行为调查问卷及信息干预实验,研究信息干预前后出行者出行行为的变化,分析信息干预对慢行出行行为的影响机制。... 为研究影响出行者选择慢行出行行为的信息及其影响程度,基于保护动机理论分析慢行出行行为的信息干预作用机制,通过慢行交通行为调查问卷及信息干预实验,研究信息干预前后出行者出行行为的变化,分析信息干预对慢行出行行为的影响机制。研究表明:①健康类信息、环境类信息和政策引导类信息对于慢行出行都有促进作用,其中政策引导类干预效果最佳。②自我效能、严重性、反应效能、成本四个要素对于慢行出行的意愿程度有显著的影响作用,人口统计学变量对信息干预实验效果并无显著影响。信息干预能够对出行者的慢行出行产生正相关影响,能有效诱导慢行出行。 展开更多
关键词 慢行出行 信息干预 保护动机理论 出行引导
下载PDF
成年抑郁症患者非自杀性自伤行为及其动机的影响因素
17
作者 李莉 唐麟 《实用医学杂志》 CAS 北大核心 2024年第4期466-470,共5页
目的探讨成年抑郁症患者非自杀性自伤行为及其动机的影响因素。方法采用简单随机抽样法选择2023年1~6月本院收治成年抑郁症患者120例作为研究对象,收集患者临床信息,评估其孤独感、挫败感及自伤动机,统计分析患者非自杀性自伤(non-suici... 目的探讨成年抑郁症患者非自杀性自伤行为及其动机的影响因素。方法采用简单随机抽样法选择2023年1~6月本院收治成年抑郁症患者120例作为研究对象,收集患者临床信息,评估其孤独感、挫败感及自伤动机,统计分析患者非自杀性自伤(non-suicidal self-injury,NSSI)行为及动机的影响因素。结果年龄、ULS-8评分、DS评分、婚姻情况、就业情况均为导致成年抑郁症患者存在NSSI的影响因素(P<0.05)。ULS-8评分、DS评分、婚姻情况(丧偶/离异)、就业情况均为导致成年抑郁症患者存在NSSI的独立危险因素(P<0.05)。ULS-8评分是患者以“情绪调节”为NSSI动机的独立危险因素,年龄、DS评分、就业情况(无业)是患者以“人际界限”为NSSI动机的独立危险因素(P<0.05)。结论成年抑郁症患者存在NSSI及NSSI动机的影响因素众多,且不同NSSI动机的影响因素各不相同,临床应通过详细调查明确患者实施NSSI的主要动机及相关影响因素,以为患者拟定针对性的干预策略。 展开更多
关键词 抑郁症 非自杀性自伤行为 自伤行为动机 影响因素
下载PDF
破解我国国有企业经营者激励难题的可行路径--国企改革30年的反思与前瞻 被引量:3
18
作者 曹雷 黄再胜 《经济经纬》 CSSCI 北大核心 2008年第6期100-103,共4页
国有企业利益相关者对国企初次收入分配的公平偏好和国企经营目标的多元性,导致政府仍然保留改制后国企经营者的选择权和定薪权,这是造成当前国企经营者激励难题的根本原因。由于中国市场化改革的渐进性和国企制度变迁的路径依赖,这些... 国有企业利益相关者对国企初次收入分配的公平偏好和国企经营目标的多元性,导致政府仍然保留改制后国企经营者的选择权和定薪权,这是造成当前国企经营者激励难题的根本原因。由于中国市场化改革的渐进性和国企制度变迁的路径依赖,这些造成国企经营者激励难题的社会性约束短期内难以根本消除。所以,新时期国企经营者激励制度改革和创新必须另辟蹊径。只有大力借鉴行为合约理论的相关成果,着眼于经营者公平偏好、利他主义等非货币动机的培育和运用,才能实现可行突破。 展开更多
关键词 经营者 激励 社会性约束 非货币动机
下载PDF
计算式互惠机制探讨--认知和动机的物种比较 被引量:1
19
作者 熊明瑞 张真 施建农 《心理科学进展》 CSSCI CSCD 北大核心 2015年第10期1746-1754,共9页
与灵长类动物相比,人类社会中存在广泛的互惠行为,这种广泛性表现为人类具有独特的计算式互惠。本文从计算式互惠的认知和动机机制两方面对人类儿童和灵长类动物进行比较,以期从近因机制的角度为人类互惠行为的复杂性提供解释依据。未... 与灵长类动物相比,人类社会中存在广泛的互惠行为,这种广泛性表现为人类具有独特的计算式互惠。本文从计算式互惠的认知和动机机制两方面对人类儿童和灵长类动物进行比较,以期从近因机制的角度为人类互惠行为的复杂性提供解释依据。未来研究需要重视从个体发展和个体差异的视角探寻认知和动机因素对计算式互惠的影响,并注重从互动双方各自的角度对各影响因素进行区别和分析,从而更全面地提供有关人类互惠近因机制的证据。 展开更多
关键词 灵长类动物 儿童 计算式互惠 认知能力 动机
下载PDF
FAREY SEQUENCE OF NONLINEAR DIFFERENTIAL DYNAMIC SYSTEM IN TWO DIMENSIONS 被引量:1
20
作者 H. Q. Jin and S. N. Xu Shenyang Institute of Technology , Shenyang 110015 , China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1999年第5期1234-1236,共3页
In this paper , through the discrim ination of Farey sequence in the forced Brusselator withweak coupling , it is proved that there is a topological translation fro m a nonlinear differen tial system ( limit cycle)... In this paper , through the discrim ination of Farey sequence in the forced Brusselator withweak coupling , it is proved that there is a topological translation fro m a nonlinear differen tial system ( limit cycle) to the circle m ap . 展开更多
关键词 non - linearity Farey sequence phase lock CHAOS
下载PDF
上一页 1 2 18 下一页 到第
使用帮助 返回顶部