Searching for momentum in NBA triplets of free throws     

Elia Morgulev  Ofer H. Azar  Michael Bar-Eli 《Journal of sports sciences》2020,38(4):390-398

ABSTRACT

The literature on momentum is still undecided, with mixed results whether momentum exists or is only perceived to exist (“hot hand fallacy”). We explore whether momentum exists by looking at cases in which a basketball player has three consecutive free throws. A free throw is a well-defined task executed in a stable environment, allegedly giving momentum optimal chances to occur. Taking 14 NBA seasons we collected over 4500 three-free-throw sets (triplets). We obtained the outcomes of the shots as well as some additional variables about the player and the game: the player’s average free-throw percentage, home or away, and the game score and the quarter when the free throws were attempted. We first analyse the hit rates in the three shots and then proceed to regression analysis that also controls for the abovementioned variables. We address several concerns raised in the literature. All comparisons and analyses yield the same conclusion that there is no evidence for momentum in the data.  相似文献   

Analysis of single comments left for bioRxiv preprints till September 2019     

Mario Mali ki  Joseph Costello  Juan Pablo Alperin  Lauren A. Maggio 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(2)

IntroductionWhile early commenting on studies is seen as one of the advantages of preprints, the type of such comments, and the people who post them, have not been systematically explored.Materials and methodsWe analysed comments posted between 21 May 2015 and 9 September 2019 for 1983 bioRxiv preprints that received only one comment on the bioRxiv website. The comment types were classified by three coders independently, with all differences resolved by consensus.ResultsOur analysis showed that 69% of comments were posted by non-authors (N = 1366), and 31% by the preprints’ authors themselves (N = 617). Twelve percent of non-author comments (N = 168) were full review reports traditionally found during journal review, while the rest most commonly contained praises (N = 577, 42%), suggestions (N = 399, 29%), or criticisms (N = 226, 17%). Authors’ comments most commonly contained publication status updates (N = 354, 57%), additional study information (N = 158, 26%), or solicited feedback for the preprints (N = 65, 11%).ConclusionsOur results indicate that comments posted for bioRxiv preprints may have potential benefits for both the public and the scholarly community. Further research is needed to measure the direct impact of these comments on comments made by journal peer reviewers, subsequent preprint versions or journal publications.  相似文献   

Exploring the Fluctuations of Foreign Language Enjoyment in Conversation: An Idiodynamic Perspective     

Majid Elahi Shirvan  Nahid Talebzadeh 《Journal of Intercultural Communication Research》2018,47(1):21-37

The main focus of this study was to discern the effect of different topics on the dynamics of one of the main variables of positive psychology, foreign language enjoyment (FLE). To do this, we used an idiodynamic method to explore the rapid moment-to-moment changes of FLE. Seven female university students engaged in a conversation involving both simple and difficult topics, and self-rated their moments of experiencing enjoyment during the conversation process. The results indicate that the dynamicity of enjoyment emerges not only within individuals, but also across individuals intra-personally under the influence of conversational topics. Furthermore, the idiodynamic method provided us with the opportunity to examine the underlying factors of the dynamic fluctuations of FLE and gain a deeper insight into FLE as a dynamic system.  相似文献   

高中政治课堂议题式教学策略解析     

盛海健 《成才之路》2020,(9):30-31

议题式教学是促进学生发展、培养学生学科核心素养的重要方式,将其应用在高中政治课堂教学中十分重要。文章就高中政治课堂实施议题式教学的意义进行分析,指出高中政治课堂议题式教学的实施策略主要是更新教学理念、立足课程教材、注重生活情境的再现、加强信息技术的利用。  相似文献   

两年制硕士研究生科研论文能力的探讨   总被引：7，自引：0，他引：7  

李庆华 《科技与管理》2006,8(3):149-151

针对两年制硕士研究生科研论文能力的培养,根据科研论文工作时间较短的特点,提出了从论文选题突出研究生科研能力培养,为研究生提供良好的论文工作科研环境,保证研究生有充足的时间投入论文科研工作等3方面加强培养研究生科研能力的建议。  相似文献   

网络话题传播规律建模与预测问题研究     

夏一雪 《现代情报》2019,39(4):3-12

[目的/意义]构建数学模型研究网络话题传播规律建模和预测问题，为深入研究网络话题传播规律提供理论参考。[方法/过程]定性分析网络话题传播的大数据特征、可量化性、可度量周期性、可预测性等特征，通过分析网络话题传播机理，构建网络话题传播规律的常态模型和衍生模型，提出划分网络话题传播阶段的一般方法，并据此研究网络话题传播趋势预测方法。[结论/结果]通过"雾霾"微博话题数据开展实证分析，能够较好地划分传播阶段并预测传播趋势，由此，根据本文构建的数学模型研究网络话题传播规律是可行的。  相似文献   

Explicit and implicit perspectives on research-based teacher education: newly qualified teachers’ experiences in Finland     

Jessica Aspfors  Gunilla Eklund 《师资教育杂志》2017,43(4):400-413

Much of the international debate and research on teacher education has centred on how the preparation of teachers should be organised. In contrast to many other countries, teacher education in Finland has been university-based for decades and has a strong research-based approach. This inductive study describes newly qualified teachers’ (NQTs) experiences of research-based teacher education. The study uses data from semi-structured interviews with 10 newly qualified primary school teachers that were conducted in 2016, directly after they had finished their master’s degrees but had not yet begun to work as teachers. A qualitative content analysis identified three main knowledge areas that describe NQTs’ experiences: personal development, teacher professional competence and research competence. The results demonstrate that students in research-based teacher education gain a solid basis for their future teacher profession, as well as experiencing legitimacy and a high level of status in society. Their education encourages them to become innovative and professional teachers who are prepared to honour the trust and autonomy given to them by society.  相似文献   

Action learning as an element within an assessed and supported year in employment for newly qualified social workers: a three-role perspective     

Carol Wells  Ikedola Animashaun  Anneliese Gibb 《Action Learning: Research and Practice》2017,14(2):167-173

The assessed and supported year in employment (ASYE) is employer-led and provides a programme to support and assess newly qualified social workers (NQSWs) working with children and families and adults during their first year of employment. Action learning was brought into Cambridgeshire County Councils ASYE programme as a 12-month pilot from October 2015 to September 2016, with the view of providing an opportunity for the 55–60 NQSWs to develop critical thinking, problem-solving and leadership skills. This paper gives an account of the journey from the perspective of the roles of the accoucheur and action learning lead, ASYE Programme Lead and Evaluator and identifies key learning points. In writing this paper, the authors acknowledge the contribution of their colleague facilitators and the NQSWs who participated in action learning sets.  相似文献   

慕课环境下新建地方本科院校教学改革--基于翻转课堂的项目式教学     

罗思亮 《安顺学院学报》2016,(3):59-62

慕课,指“大规模、开放式的网络在线课程”,对传统高等教育带来的挑战极大,影响着我国高等教育的教学改革。目前教育部希望引导一些普通本科高校转型为应用技术型大学,旨在发展我国职业教育,而新建地方本科院校由于其的特殊性成为转型发展的主要对象。本文探讨在此种大环境下,基于翻转课堂的项目式教学模式对新建地方本科院校教学改革的意义及适用性,并介绍其具体的教学模式和指出目前实施过程中存在的挑战。  相似文献   

Influence of Different Surface Treatments of H13 Hot Work Die Steel on Its Thermal Fatigue Behaviors   总被引：1，自引：0，他引：1  

MINYong－an  WUXiao－chun 《上海大学学报(英文版)》2001,5(4):326-330

Thermal fatigue checking is general failure of hot work die steels,which is relative with the structures and properties of the steels and the stress alternated during the employment.The Uddeholm test method on thermal fatigue is used to compare the behaviors of different samples,which are treated with plasma nitriding 、plasma sulfur-carbon-nitriding、boronizing or not treated.The results show that the nitriding improves the thermal fatigue property of the tool steel,while the plasma sulfur-carbon-nitriding and the boronizing impair the property.The mechanisms are induced as follows .By increasing the hardness and changing the stress distribution in the surface layer,surface treatment can decrease the plastic deformation and the temsile stress during the cycling.Therefore,the generation and growth of the cracks are restrained.On the other hand,as results of surface treating,in the surface layer the toughness declines and the expanding coefficient ascendes;the latter change caused the strengthening of the tensile and compressive stress during the cycling.Thus the resistance to thermal fatigue is weakened.Whether or not the surface treatment is favor to thermal fatigue of tool steels relies on which factor is dominant.  相似文献