The International Journal of Electrical Engineering & Education最新文献

Dynamic analysis of a novel spatial multiple-loop mobile lunar landing mechanism: An efficient approach based on explicit dynamics 一种新型空间多回路移动登月机构的动力学分析:基于显式动力学的有效方法

The International Journal of Electrical Engineering & Education Pub Date : 2021-05-03 DOI: 10.1177/00207209211005278

Shan Jia, Jinhua Zhou, Yunchen Xiao, Meng Chen, Jinbao Chen

{"title":"Dynamic analysis of a novel spatial multiple-loop mobile lunar landing mechanism: An efficient approach based on explicit dynamics","authors":"Shan Jia, Jinhua Zhou, Yunchen Xiao, Meng Chen, Jinbao Chen","doi":"10.1177/00207209211005278","DOIUrl":"https://doi.org/10.1177/00207209211005278","url":null,"abstract":"The Movable lunar landing leg is a novel multi - closed parallel mechanism with sub-closed loop. Moreover, there are multiple passive and active joint variables in the mobile lunar landing legged mechanism (MLLLM), Due to the complex dynamic relationship between the passive joint variables and the active joint variables, it is difficult to derive the dynamic modeling of parallel mechanisms by the non-redundant parallel mechanism using the traditional Lagrangian formulation method. In order to solve this problem, the utilization of the virtual work principle makes the application of the Lagrangian formulation for parallel mechanisms possible and efficient. The MLLLM is divided into several serial open-loop sub-chains. Explicit dynamic equations of each sub-chain can be derived by using the Lagrangian formalism straightforwardly with respect to their own local generalized coordinates. Secondly, when transforming between different generalized coordinates, the dynamic equation is transformed into different coordinate subsystems by using the principle of virtual work, and the Jacobian matrix and Hessen matrix are introduced as constraints to ensure the explicit form of the dynamic equation, by combining the differential dynamics equations of each subsystem with the virtual work principle, the explicit dynamics model of the MLLLM under the active generalized coordinates is obtained. Finally, the position error of the end-effector caused by the active and passive joints of the parallel mechanism was evaluated. Compared with the previous methods, the inverse dynamic analysis formula presented in this paper is more concise, the calculation efficiency is higher, and the position error evaluation method is more accurate than the traditional method.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130355979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Stability and mutual impact of perception of parental pressure and infants' social support – A study based on the difference between employment status and household income 父母压力感知与婴儿社会支持的稳定性及其相互影响——基于就业状况与家庭收入差异的研究

The International Journal of Electrical Engineering & Education Pub Date : 2021-04-23 DOI: 10.1177/0020720921997059

Yong Wang

{"title":"Stability and mutual impact of perception of parental pressure and infants' social support – A study based on the difference between employment status and household income","authors":"Yong Wang","doi":"10.1177/0020720921997059","DOIUrl":"https://doi.org/10.1177/0020720921997059","url":null,"abstract":"The purpose of this study is to explore the stability and interaction between parental pressure and social research report, as well as the role of employment status and family income levels in this process. This study used a special study on Korean children (PSKC) 2–4 waves. Use t-test, correlation and autoregressive cross-delay modeling to analyze the data. The main findings of this study are: First, over time, parental pressure and mother’s social research report are consistent. Secondly, the pressure of motherhood and childcare has an obvious lagging effect on upbringing, and vice versa. Third, there is no significant difference between working mothers and non-working mothers in terms of the stability of working parents' pressure, social research report and social research report for children's pressure channels. However, parental pressure can only predict the social research report of working mothers. Fourth, there is no significant difference between the stability and interaction of these two structures in household income levels. In short, the results show that, over time, parental pressure is consistent with mother’s social research report. The results also show that there is a significant cross-lag effect between the mothers’ perceptions of mutual pressure analysis. In the process from parental pressure to social research report, I found the difference between working and non-working mothers. The advantage of this study is that the expected longitudinal design was adopted during infancy and the priority between the two structures can be considered. The results of this study can be used as a source of intervention plans to help parents withstand severe parenting pressure and lack of social research report.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132505658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Research on the countermeasures of college students’ mental health education under the background of the epidemic 疫情背景下大学生心理健康教育对策研究

The International Journal of Electrical Engineering & Education Pub Date : 2021-04-22 DOI: 10.1177/00207209211005261

Huifang Wang, Longqin Jia

引用次数: 80

Research on tourism management education under the background of new liberal arts construction 新文科建设背景下的旅游管理教育研究

The International Journal of Electrical Engineering & Education Pub Date : 2021-04-17 DOI: 10.1177/00207209211005259

Lirong Zhai

引用次数: 3

Study on the dynamic impact of population characteristics on health costs – Empirical study based on the panel smooth transformation model 人口特征对医疗成本的动态影响研究——基于面板平滑转换模型的实证研究

The International Journal of Electrical Engineering & Education Pub Date : 2021-03-10 DOI: 10.1177/0020720921998232

Liqing Li, Mengqi Guan, Zixuan Liu

{"title":"Study on the dynamic impact of population characteristics on health costs – Empirical study based on the panel smooth transformation model","authors":"Liqing Li, Mengqi Guan, Zixuan Liu","doi":"10.1177/0020720921998232","DOIUrl":"https://doi.org/10.1177/0020720921998232","url":null,"abstract":"In order to study the dynamic influence mechanism of population characteristics on health expenses, the panel data of 31 provinces, autonomous regions and municipalities directly under the Central Government (excluding Hong Kong, Macao and Taiwan) from 2009 to 2016 were used to construct panel smooth transformation model with population characteristics as heterogeneous variables for empirical analysis. The results show that the population number, population structure and population distribution have significant nonlinear effects on per capita health expenses, and the threshold values of population number, population structure and population distribution are 24.6686 million people, 6.9928%, 40.707%. When the threshold is crossed, The effect of population size on per capita health costs is reduced smoothly, The effect of population structure and population distribution on per capita health cost changed from inhibition to promotion.Therefore, according to the relationship between current population characteristics and health expenses, all regions should optimize the structure of health expenses expenditure, improve the level of health services, especially expand the scale of education and training of targeted rural medical students, strengthen the education and training of rural doctors, in order to narrow the difference between urban and rural diagnosis and treatment level.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125217360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pressure source of athletes in field based on improved hierarchical K-means algorithm 基于改进层次k均值算法的赛场运动员压力源研究

The International Journal of Electrical Engineering & Education Pub Date : 2021-02-20 DOI: 10.1177/0020720920985047

Qian Wu

{"title":"Pressure source of athletes in field based on improved hierarchical K-means algorithm","authors":"Qian Wu","doi":"10.1177/0020720920985047","DOIUrl":"https://doi.org/10.1177/0020720920985047","url":null,"abstract":"Nowadays, with the development of economy, sports industry attracts more and more people's attention, and the number and scale of sports events continue to expand. But the fierce competition, for athletes, is not only physical competition, psychological competition is particularly important. Psychological pressure is an important factor that affects athletes to play at a high level in the competition field. How to analyze the pressure source of athletes in the competition field is very important for athletes to overcome the competition pressure. Therefore, this paper designs a method based on the improved hierarchical K-Means clustering algorithm (KMCA) to analyze the pressure source of athletes in the competition field, so as to help athletes overcome the pressure on the competition field and promote their high-level performance. In this method, firstly, 182 athletes were investigated by questionnaire to obtain the data of related psychological pressure sources. Secondly, because KMCA is sensitive to the selection of initial class center, the performance of KMCA is directly related to the selection of initial class. Aiming at the problem of KMCA, this paper proposes an improved hierarchical KMCA. Finally, the improved hierarchical KMCA is applied to the clustering analysis of sports competition pressure source data. Through simulation analysis, compared with KMCA, the improved layered KMCA proposed in this paper has a good performance improvement. The improved hierarchical KMCA proposed in this paper can be applied to the analysis of the pressure source of athletes in the competition field, which can analyze the pressure of athletes and get the characteristics of the pressure of athletes, so as to help athletes overcome the pressure in the competition field and achieve the mental health of the competition field?","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130372586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Research and practice of online emergency teaching based on electronic information technology under the influence of COVID-19 新冠肺炎疫情影响下基于电子信息技术的在线应急教学研究与实践

The International Journal of Electrical Engineering & Education Pub Date : 2021-02-18 DOI: 10.1177/0020720920985048

Ya Zhao, Yongfang Tang, Fang Liu, Z. Peng, J. Kong, Juan Huang, Zhuozhuang Tong

{"title":"Research and practice of online emergency teaching based on electronic information technology under the influence of COVID-19","authors":"Ya Zhao, Yongfang Tang, Fang Liu, Z. Peng, J. Kong, Juan Huang, Zhuozhuang Tong","doi":"10.1177/0020720920985048","DOIUrl":"https://doi.org/10.1177/0020720920985048","url":null,"abstract":"The new crown pneumonia (COVID-19) epidemic in 2020 has spread globally, causing schools around the world to stop routine teaching. Educational institutions in various countries have adopted online teaching methods in response to this crisis. This research, carried out in Human Institute of Information Technology with a number of teachers and students as its subjects, sets out to give statistical analysis upon the students' selections of online teaching platforms as well as their evaluations of online teaching. At the same time, based on the online teaching practice of “Building Structure”, a certain quantity of research upon the online teaching practice is completed among the students who began their college studies in engineering cost in the year of 2018. According to all these studies, it is evident that multiple factors such as teachers' ages, professions, and the features of various online teaching platforms, can determine which one is used by different individuals. The evaluation results suggest that online teaching is necessary under the impact of the epidemic despite the fact that students may face a series of problems for lack of self-control and other possible reasons. Through practice, an innovative teaching and evaluation method can partially solve the problems found in online teaching and provide useful ideas for creating higher quality teaching on the Internet.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129941842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Heterogeneity perspective effect of environmental regulation on enterprise export products switching: Evidence from Chinese firm-level data 异质性视角下环境规制对企业出口产品转换的影响:来自中国企业层面数据的证据

The International Journal of Electrical Engineering & Education Pub Date : 2020-12-29 DOI: 10.1177/0020720920983498

Yuegang Song, Xiazhen Hao, Xinhua Shen, Yang Jing

{"title":"Heterogeneity perspective effect of environmental regulation on enterprise export products switching: Evidence from Chinese firm-level data","authors":"Yuegang Song, Xiazhen Hao, Xinhua Shen, Yang Jing","doi":"10.1177/0020720920983498","DOIUrl":"https://doi.org/10.1177/0020720920983498","url":null,"abstract":"Under the constraint of enterprise heterogeneity, environmental regulation will affect the re-allocation of resources among products. Appropriate product switching can make China’s export trade powerful, promote the high-quality development of export trade, and realize the win-win situation between environmental protection and export trade. Based on the related theories of environmental economics and international trade, this paper uses the matching data of China’s industrial enterprises and customs import and export trade in 2000–2013, then uses the fixed-effects model to test a total of 410,326 samples of 114,897 enterprises. We empirically analyzed the impact of environmental regulations on the export products switching from the perspective of heterogeneity. We found that: the intensity of environmental regulations is positively correlated with the total switching rate of export products, the increase rate of export products and the export product obsolescence rate. Environmental regulations have a greater impact on the export products switching of general trade enterprises than on processing trade; the impact on private and foreign enterprises is greater than that on state-owned enterprises; the impact on high-tech enterprises is greater that than on low and medium-tech enterprises; through theoretical analysis and empirical test, this paper reveals the mechanism and its promotion effect of environmental regulations on the export products switching of heterogeneous Chinese enterprises, which provides theoretical and practical support for the enhancement of China’s export products international competitiveness and environmental improvement.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128452702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recognition and zoning optimization of geographical spatial conflict in Wuhan metropolitan area based on multi-functional perspective 基于多功能视角的武汉都市圈地理空间冲突识别与分区优化

The International Journal of Electrical Engineering & Education Pub Date : 2020-12-29 DOI: 10.1177/0020720920983546

Junfeng Zhang, Jinyuan Tao, Lei Xu, Xiong Zhang, Yuteng Sun

{"title":"Recognition and zoning optimization of geographical spatial conflict in Wuhan metropolitan area based on multi-functional perspective","authors":"Junfeng Zhang, Jinyuan Tao, Lei Xu, Xiong Zhang, Yuteng Sun","doi":"10.1177/0020720920983546","DOIUrl":"https://doi.org/10.1177/0020720920983546","url":null,"abstract":"Identifying geographical spatial conflicts and optimizing development patterns are important prerequisites for eliminating the conflicts of geographical spatial conflict. The paper takes the Wuhan Metropolitan Area as an example. Using grid-scale data, we construct a multi-functional suitability evaluation index system for geographical space, starting from three dimensions: ecological protection, agricultural production and urban construction. The multi-index comprehensive evaluation method is used to measure the geographical spatial suitability level and identify the characteristics of geographical spatial conflict patterns. Three-dimensional Rubik's cube model is used to divide the space conflict types and optimize the partition. We found that the areas with suitable ecological protection functions and more suitable areas are mainly distributed near the waters and the Dabie Mountains and Mufu Mountains with relatively high altitude in Wuhan Metropolitan Area. Suitable areas for agricultural production functions are concentrated in the Jianghan Plain. Suitable areas for urban construction functions are concentrated around urban areas, established towns, and major transportation routes. Regions with high intensity of land and space conflicts are mainly located in the central and northwestern parts of the Wuhan Metropolitan Area. Regions with low levels of conflict are concentrated in the west, northeast, and southeast regions of the Wuhan Metropolitan Area. The degree of geographical spatial conflict in Wuhan Metropolitan Area can be divided into three primary zones and 12 secondary zones, which are intense conflict zone, general conflict zone, and weak conflict zone. Based on multi-functional perspective, identifying and analyzing the types of geographical spatial conflict will help locate the development direction of different conflict areas and provide theoretical and technical support for the optimization of geographical space.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123236604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

New sights for measuring the relations among environmental information disclosure, economic performance and corporate governance 衡量环境信息披露、经济绩效与公司治理关系的新视角

The International Journal of Electrical Engineering & Education Pub Date : 2020-12-25 DOI: 10.1177/0020720920983689

Chen Siqi, Wenzhong Zhu, Xuepei Li, Pan Wen-Tsao

{"title":"New sights for measuring the relations among environmental information disclosure, economic performance and corporate governance","authors":"Chen Siqi, Wenzhong Zhu, Xuepei Li, Pan Wen-Tsao","doi":"10.1177/0020720920983689","DOIUrl":"https://doi.org/10.1177/0020720920983689","url":null,"abstract":"Environmental information disclosure is gradually gaining popularity, especially under the severe environmental pollution. Analyzing the relations among environmental information disclosure (EID), corporate governance and economic performance by employing a cross-disciplinary and a cross-sectional approach is a new start for improving environmental disclosure. The Ordinary Least Square results suggest that, firstly, firm size and ownership structure have significant positive relations with EID and economic performance. Secondly, the factors of corporate governance including the equity concentration ratio, logarithm of management incentive, logarithm of management shareholding, the board size and the number of directors, all have positive influences on EID. Thirdly, corporate governance has an impact on firm’s economic performance. Lastly, this study reveals that EID positively affects firm’s financial performance—solvency, operational capability and profitability. It is expected that this study can highlight the importance of environmental awareness of professional genre and enhance the environmental disclosure.","PeriodicalId":391912,"journal":{"name":"The International Journal of Electrical Engineering & Education","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128676985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0