Should I stay or should I go? Predictors and effects of studying abroad during high school     

《Learning and Instruction》2021

In an increasingly globalized and culturally diverse world, extended stays abroad during high school are considered important opportunities for acquiring and improving a variety of skills, most importantly, language achievement. This study examines both predictors and effects of studying abroad in an English-speaking country during high school, using population data from the second largest city in Germany (N = 5361; 13% went abroad). In order to determine the most central predictors of studying abroad, we employed logistic regression models in which students’ socioeconomic background emerged as the strongest predictor of studying abroad. To test the effects of studying abroad, we applied propensity score matching. Studying abroad had positive effects on standardized achievement, grades, and course choice in English, whereas it had hardly any effects on outcomes in math. Implications for studying abroad during high school and future research directions are discussed.  相似文献   

Decoding digital transformational outsourcing: The role of service providers’ capabilities     

《International Journal of Information Management》2021

The business process outsourcing industry has got disrupted, first by the significant shift in value creation activities from the clients to the service providers, and second by pervasive digital penetration, resulting in the emergence of Digital Transformational Outsourcing (DTO). Service providers now play a more significant role, making their capabilities important. In the new context, service providers require a uniquely different set of dynamic capabilities to handle end-to-end business functions on behalf of their clients while delivering digital value propositions.We study 26 of the largest global business process outsourcing providers to conceptualise and identify six dynamic capabilities of service providers salient in the new context, i.e., consultative, orchestration, insights, network management, knowledge access, and standardisation. Interviews conducted with industry experts provided evidence in support of the identified dynamic capabilities. A novel firm capability dataset was created using secondary data, and using fuzzy-set Qualitative Comparative Analysis (fsQCA), we identify configurations for high and low performance and find them to vary by the firm's broad/narrow scope.  相似文献   

Cross-company customer churn prediction in telecommunication: A comparison of data transformation methods     

《International Journal of Information Management》2019

Cross-Company Churn Prediction (CCCP) is a domain of research where one company (target) is lacking enough data and can use data from another company (source) to predict customer churn successfully. To support CCCP, the cross-company data is usually transformed to a set of similar normal distribution of target company data prior to building a CCCP model. However, it is still unclear which data transformation method is most effective in CCCP. Also, the impact of data transformation methods on CCCP model performance using different classifiers have not been comprehensively explored in the telecommunication sector. In this study, we devised a model for CCCP using data transformation methods (i.e., log, z-score, rank and box-cox) and presented not only an extensive comparison to validate the impact of these transformation methods in CCCP, but also evaluated the performance of underlying baseline classifiers (i.e., Naive Bayes (NB), K-Nearest Neighbour (KNN), Gradient Boosted Tree (GBT), Single Rule Induction (SRI) and Deep learner Neural net (DP)) for customer churn prediction in telecommunication sector using the above mentioned data transformation methods. We performed experiments on publicly available datasets related to the telecommunication sector. The results demonstrated that most of the data transformation methods (e.g., log, rank, and box-cox) improve the performance of CCCP significantly. However, the Z-Score data transformation method could not achieve better results as compared to the rest of the data transformation methods in this study. Moreover, it is also investigated that the CCCP model based on NB outperform on transformed data and DP, KNN and GBT performed on the average, while SRI classifier did not show significant results in term of the commonly used evaluation measures (i.e., probability of detection, probability of false alarm, area under the curve and g-mean).  相似文献   

论大众竞技运动与精英竞技运动的协调发展   总被引：4，自引：0，他引：4  

陈勇军  邹国忠  王正伦  王爱丰 《南京体育学院学报(社会科学版)》2003,17(3):23-27

体育与竞技运动是两个不同的概念 ,两者都有普及与提高的问题 ,精英竞技运动的发展不是建立在大众体育和学校体育的基础之上的 ,其发展的基础是竞技运动在全社会的普及。传统的认识存在许多缺陷 ,导致在实践中产生很多偏差。讨论了大众竞技运动与精英竞技运动的异同 ,分析了西方国家管理与发展竞技运动的模式、中国发展竞技运动成功的经验及存在的问题 ,说明了应如何理解所谓大众竞技运动与精英竞技运动协调发展的问题 ,最后从 5个方面探讨了大众竞技运动与精英竞技运动协调发展的基本对策。  相似文献   

体育院校与普通院校大学生成就动机发展特点的比较研究   总被引：3，自引：0，他引：3  

杨勇  魏丕来 《沈阳体育学院学报》2003,(3):50-52

运用心理测量法和问卷法 ,采用定量与定性分析相结合的方法 ,对体育院校大学生成就动机的发展特点进行分析 ,并与普通院校大学生进行比较。研究结果表明 :体育院校大学生成就动机水平高于普通院校大学生成就动机水平 ;体育院校与普通院校男女大学生的成就动机得分不存在显著差异 ;影响体育院校与普通院校大学生成就动机的前两位因素是意志品质和社会就业压力。  相似文献   

正交变换在积分中的应用     

游家桦 《贵阳金筑大学学报》2003,(3)

利用正交变换,在重积分、曲面积分中处理积分的变数替换。  相似文献   

浅析师生互动式营销案例教学法   总被引：1，自引：0，他引：1  

钱国林 《苏州市职业大学学报》2006,17(4):135-137

现代经济社会所要求的人才培养的目标是具有创新思维、创新能力的新一代创造型人才,而以学生为中心的教学模式无疑是达到这一目标的有效途径。本文通过对各类企业典型案例的深入分析,使学生既能牢固地掌握所学的基础理论知识,又能针对具体企业、具体问题作出自己的判断,提出具有个性化的分析诊断以及营销管理对策,这对于培养具有创新观念的新型人才意义深远。  相似文献   

福建省田径队成绩滑坡原因的分析     

黄毅  左成 《体育科学研究》2001,5(3):68-71

通过比较福建省田径队在1987-1997年3届全运会上的成绩及进入90年代以来在队伍结构上的一些变化,总结出优秀运动员退役、大量年轻队员过早离队、教练队伍的变化、后备力量缺乏、与高校缺乏配合等原因是导致其水平下滑的原因.  相似文献   

知识经济背景下科技期刊的变革与编辑的转型   总被引：36，自引：7，他引：29  

钟天明 《编辑学报》2001,13(2):91-93

论述知识经济时代科技期刊及其生存空间的变革，为适应这种变革，科技期刊编辑应尽快转型，包括思想观念的转型，知识结构的转型，编辑职能和工作方式的转型，以及编辑社会角色的转型。  相似文献   

国内外优秀女子七项全能选手成绩演进态势的比较   总被引：3，自引：0，他引：3  

宋君臣 《成都体育学院学报》2004,30(6):53-55

采用文献资料法、数理统计法和比较法,对中国与世界优秀女子七项全能运动员成绩进行对比分析.结果表明:我国女子七项全能在经过发展和提高之后正处于滑坡阶段,我国选手与世界优秀女子七项全能选手相比,无论在总成绩上还是在单项上均存在较大差距,而快速力量性项目(跳远、标枪、铅球)尤为明显.  相似文献