不同收入的城镇居民对体育消费结构和体育消费需求的影响*     

于〓乐  程〓蕾 《广州体育学院学报》2019,(5):26-30

采用问卷调查和数理统计方法，研究了不同收入的居民对体育消费结构和体育消费需求的影响。结果表明，随着居民收入的增加，各类体育消费都呈现上升趋势，实物型体育消费增长速度变慢，观赏型体育消费和健身型体育消费增长速度变快，当居民年收入在10万以上时，观赏型体育消费和健身型体育消费开始急剧增加。制约体育消费需求的主要因素是居民的收入、体育消费的价格、体育消费结构和居民的可支配时间。  相似文献   

Location extraction from tweets     

Thi Bich Ngoc Hoang  Josiane Mothe 《Information processing & management》2018,54(2):129-144

Five hundred million tweets are posted daily, making Twitter a major social media platform from which topical information on events can be extracted. These events are represented by three main dimensions: time, location and entity-related information. The focus of this paper is location, which is an essential dimension for geo-spatial applications, either when helping rescue operations during a disaster or when used for contextual recommendations. While the first type of application needs high recall, the second is more precision-oriented. This paper studies the recall/precision trade-off, combining different methods to extract locations. In the context of short posts, applying tools that have been developed for natural language is not sufficient given the nature of tweets which are generally too short to be linguistically correct. Also bearing in mind the high number of posts that need to be handled, we hypothesize that predicting whether a post contains a location or not could make the location extractors more focused and thus more effective. We introduce a model to predict whether a tweet contains a location or not and show that location prediction is a useful pre-processing step for location extraction. We define a number of new tweet features and we conduct an intensive evaluation. Our findings are that (1) combining existing location extraction tools is effective for precision-oriented or recall-oriented results, (2) enriching tweet representation is effective for predicting whether a tweet contains a location or not, (3) words appearing in a geography gazetteer and the occurrence of a preposition just before a proper noun are the two most important features for predicting the occurrence of a location in tweets, and (4) the accuracy of location extraction improves when it is possible to predict that there is a location in a tweet.  相似文献   

Parenting Teamwork: The Impact of a Fathering Intervention on Mothers and Infants in Vietnam     

John K. Rempel  Lynn A. Rempel  Dinh T.P. Hoa  Le T. Vui  Tran K. Long 《Child development》2020,91(2):e345-e364

A multifaceted, relationally focused intervention involving group and individual pre- and postnatal counseling, print resources, and community resources encouraged 390 fathers of newborn infants in Vietnam to responsively support mothers and work with them as a parenting team. Both partners completed questionnaires prebirth and 1-, 4-, and 9-months postbirth on measures of breastfeeding support, exclusive breastfeeding duration, relationship quality, and infant development. Compared to 412 comparison group couples, intervention couples evidenced greater father support, especially in terms of helping and responsiveness to the mother's needs. This support predicted longer exclusive breastfeeding duration, improved relationship quality, and higher levels of infant development at 9 months. Sensitively working together with mothers as a coordinated team enhanced couple's relationship functioning and improved children's developmental outcomes.  相似文献   

Bidirectional longitudinal relationship between Chinese children's compounding awareness and vocabulary knowledge from Grades 3 to 6     

Ruibo Xie  Xinchun Wu  Thi Phuong Nguyen  Ying Zhao  Jie Feng 《Journal of Research in Reading》2020,43(4):482-495

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‘Sexual violence is not good for our country's development’. Students’ interpretations of sexual violence in a secondary school in Addis Ababa,Ethiopia     

Marielle L. J. Le Mat 《Gender and education》2016,28(4):562-580

It has been increasingly recognised that sexual violence in schools is one of the major concerns with regard to promoting sexual and reproductive health and rights. This paper examines how boys and girls define, experience, and interpret sexual violence in a secondary school in Addis Ababa, Ethiopia, and considers from their perspectives, how sexual violence can be addressed effectively in formal educational settings. Fifteen in-depth interviews and two focus group discussions revealed how these views can be strikingly different for boys and girls: boys sharing a theoretical and instrumental view on sexual violence, as opposed to girls’ emotional views based on their experiences. This major difference in understanding complicates teaching about sexuality, and leaves room for sexual violence to remain tolerated in schools. Nevertheless, all students express the need to learn openly about sexuality, and particularly to reflect on the contradicting messages they receive from their environment.  相似文献   

Using Natural Language Processing to Predict Item Response Times and Improve Test Construction     

Peter Baldwin  Victoria Yaneva  Janet Mee  Brian E. Clauser  Le An Ha 《Journal of Educational Measurement》2021,58(1):4-30

In this article, it is shown how item text can be represented by (a) 113 features quantifying the text's linguistic characteristics, (b) 16 measures of the extent to which an information‐retrieval‐based automatic question‐answering system finds an item challenging, and (c) through dense word representations (word embeddings). Using a random forests algorithm, these data then are used to train a prediction model for item response times and predicted response times then are used to assemble test forms. Using empirical data from the United States Medical Licensing Examination, we show that timing demands are more consistent across these specially assembled forms than across forms comprising randomly‐selected items. Because an exam's timing conditions affect examinee performance, this result has implications for exam fairness whenever examinees are compared with each other or against a common standard.  相似文献   

面向智能时代的中小学在线教学:现状、趋势与政策建议     

付道明  朱龙  麦子号 《课程.教材.教法》2021,41(9):71-78

在疫情防控进入常态化背景下,如何精准、有效提升教师在线教学能力,如何实现在线教学从疫情期间的应急性教学向常态化教学线上线下混合转变,成为值得关注的重要议题.基于调查数据发现,目前在线学习环境、教师在线教学能力发展、在线教学评价、教师多重角色等都具有显著的智能时代特征,面向智能时代的中小学在线教学技术与课程的融合呈现创新发展的新趋势.我国中小学在线教学亟须通过顶层设计、依托"新基建"行动实现由"技术应用"迈向"知识创造".  相似文献   

20世纪二三十年代《国际歌》的译介与传唱     

陶乐 《安庆师范学院学报(社会科学版)》2021,40(3):67-71

《国际歌》是在巴黎公社血与火战斗洗礼中诞生的、在全世界获得广泛传唱的、以歌曲形式表现的马克思主义。20世纪二三十年代,学习和传唱《国际歌》,促进了中国共产党人政治身份的认同、革命斗志的激发和壮烈人格的塑造,激发了广大群众投身于中共领导革命斗争的坚强意志,对中国特色革命道路的开创起到了重大促进作用。其仍然具有重要的现实价值,激励着人们走好新时代的长征路。  相似文献   

Effects of implementing flipped classroom elements and dynamic in‐class discussion on student performance     

Loan Thi Thanh Cao  Jeffrey Gerard Swada 《Journal of Food Science Education》2021,20(1):48-56

In a Food Processing–Unit Operations course, students learn the basic equipment that comprises unit operations and techniques commonly used in the food industry to prepare, process, and preserve a variety of food products. Due to the complexity of these operations, students frequently struggle with applying food processing principles to predict how unit operations influence the physical, biochemical, sensory, and nutritional properties of foods. This study is designed to evaluate how pre‐class readings and in‐class group activities improve the students’ learning in a Food Processing course. The survey after the exams shows that 48 and 60% of students agree that reading assignments and in‐class group activities help them understand the course material better, respectively. The mean value of exam scores shows that the students in the intervention section (Spring 2018) had significantly higher scores (88.4%) than that of the two previous sections without intervention (77.6%, Spring 2016 and 82.8%, Spring 2017) (P < .05). It is concluded that using a flipped class element like providing reading assignments and quizzes before the lecture can be an effective preparation technique for students as well as providing the instructors with critical insight into the students’ level of understanding before the lecture. This allows the instructor to focus time spent in class on areas in which students struggle the most.  相似文献   

新时代大学生党史教育的现实意义及实践路径     

李利仙  李乐 《濮阳职业技术学院学报》2021,(3):17-20,24

中国共产党的历史是一部带领中华民族谋求独立、富强、复兴的历史。党史不仅是党发展的过程史,更是共产党人思想、文化在斗争与挫折中逐步成熟发展的历史。新时代背景下大学生党史教育,是全面贯彻落实党的教育方针,提高学生思想政治素质的重要方式,也是巩固全党全国人民团结奋斗的思想基础和重要途径。完善高校党史教育,能够让学生在系统了解中国共产党的奋斗历程中培养民族意识和历史使命,通过党史的感召培养深化学生党性原则、政治方向,并自觉自愿向党和社会主义靠拢,将个人前途命运置于党、国家、民族的前途命运中,从而找到正确的社会方向和自我位置求得自身发展。通过健全党史教育机制、优化党史教育环境、打造专业党史教师队伍等系列工程,推进党史教育在高校运行,发挥党史育人功能。  相似文献