’95全国体操冠军赛男子跳马的技术统计与分析

对1995年全国体操冠军赛男子跳马比赛进行技术统计与分析，寻找与世界先进水平的差距。为我国跳马训练提供参考。     

《中国封建社会形态研究》成书的启示

回顾时代铸就、磨难锤炼的史学名著——《中国封建社会形态研究》的成书过程,有很多的启示。与时俱进,自觉地担负起时代赋予的中心使命,探索创新与博采众长相结合,才有可能撰写出具有时代特色的标志性著作。著作撰写,需要浩繁的文献资料为基础,需要大量的时间投入,需要反复深入的思考,需要认真细致的修订等。胡如雷先生经历的磨难歪打正着,有利于使《中国封建社会形态研究》成为名著。     

The role of achievement,gender, SES,location and policy in explaining the Indigenous gap in high-school completion

Internationally, there is a gap in high-school completion rates for Indigenous and non-Indigenous students. In Australia, gap estimates are commonly based on lag indicators, precluding examination of underlying mechanisms. Using two longitudinal representative samples of Australian youth, we explored differences in high-school completion between Australian Indigenous and non-Indigenous rates, and whether the gap varies for students of similar academic ability. Using an intersectional approach, we show the Indigenous gap is significant, is mostly a function of differences in academic achievement, but varies by socioeconomic status (SES) and location. Specifically, high SES and living in urban settings are protective factors for non-Indigenous students, but not for Indigenous students. Conversely, rural and poor non-Indigenous students appeared to have dropout rates as large or even larger than similarly poor and rural Indigenous youth. Overall, the results suggest the need for a more nuanced perspective on ‘Indigenous gaps’ in educational attainment.     

基于Logistic回归模型的博士研究生超期毕业影响因素分析——以哈尔滨工业大学为例

为充分了解和掌握影响博士研究生超期毕业的主要因素,本研究基于Logistic回归模型相关理论构建博士生超期毕业概率模型。以哈尔滨工业大学为研究载体,对构建的博士生超期毕业模型进行实证分析,并得到了影响博士生超期毕业的关键因素。该研究为博士生超期预警机制的建立、博士生的教育管理以及相关政策的制定提供了一定的参考与借鉴。     

Factors associated with physical activity referral uptake and participation

Abstract

The aim of this study was to examine participant and scheme characteristics in relation to access, uptake, and participation in a physical activity referral scheme (PARS) using a prospective population-based longitudinal design. Participants (n = 3762) were recruited over a 3-year period. Logistic regression analyses identified the factors associated with the outcomes of referral uptake, participation, and completion (≥80% attendance). Participant's age, sex, referral reason, referring health professional, and type of leisure provider were the independent variables. Based on binary logistic regression analysis (n = 2631), only primary referral reason was associated with the PARS coordinator making contact with the participants. In addition to the influence of referral reason, females were also more likely (odds ratio 1.250, 95% confidence interval 1.003 – 1.559, P = 0.047) to agree to be assigned to a leisure provider. Referral reason and referring health professional were associated with taking up a referral opportunity. Older participants (1.016, 1.010 – 1.023, P < 0.001) and males were more likely to complete the referral. In conclusion, the PARS format may be less appropriate for those more constrained by time (women, young adults) and those with certain referral reasons (overweight/obesity, mental health conditions). More appropriate targeting at the point of referral could improve participation rates by revealing or addressing barriers that might later result in dropout.     

两台同类机极小化总完工时间的分批排序问题

考虑了两台同类机极小化总完工时间的分批排序问题,给出了计算复杂性为O(n3)的动态规划算法,并将此算法推广到了工件具有学习效应的情况.     

可积空间及其完备化

讨论了几类可积空间C[a，b]、R[a，b]、L^P[a，b](p≥1)的性质．得到了其可分性与完备化定理．     

Practices and opinions reported by coordinators of graduate programs

Information is presented about the organization of graduate studies, based on questionnaire responses of 582 coordinators of Canadian graduate programs. These coordinators, who were representative of disciplines and geographic regions, provided information about a wide range of matters, including enrolments, staff, admissions, supervision, research, publications, financial support, teaching experience, and completion rates and times. Many substantial differences were noted among the percentage frequencies of responses for departments classified by discipline and size. For example, students were perceived to choose their doctoral theses topics themselves much more frequently in education, social sciences, and humanities than in engineering, medical sciences, physical sciences, and biological sciences. Also, departments with smaller numbers of full-time graduate students tended to provide all doctoral students, with some teaching experience to a greater extent than did larger departments.     

Innovation in PhD completion: the hardy shall succeed (and be happy!)

What is it that makes a PhD such a difficult process, and prevents candidates from completing on time? In this paper, we propose that self‐sabotaging behaviours, including overcommitting, procrastination and perfectionism, have a role to play. At Flinders University, we have developed a program in which we work with PhD students to help to reduce these behaviours and give them the strategies and attitudes they need to successfully (and happily!) complete their thesis. The program utilises cognitive–behavioural coaching, an evidence‐based strategy that we claim leads to significant and long‐term behavioural change. An evaluation of the program indicates that it is very successful, improving students’ ability to manage their time, set specific times for writing, and show work to their supervisor regularly, and that these behaviours were associated with lower levels of stress and improved ability to complete.     

Perceived conversational ability of task-based chatbots – Which conversational elements influence the success of text-based dialogues?

The use of text-based chatbots offering individual support to customers has increased steadily in recent years. However, thus far, research has focused on comparing text-based chatbots with either each other or with humans, whilst the investigation of task-based dialogues has been scarce. This paper aims to identify the characteristics of dialogues – that is, conversational elements – that lead to a successful task-based conversation. For this purpose, the chatbot, KIM, by MAGGI Kochstudio was used. It was designed to help customers find a recipe tailored to their individual needs. In order to investigate which conversational elements contribute to successful communication between the user and the chatbot KIM, a usability study collecting 123 unstructured dialogues and a scenario-based experiment using four dialogues with 627 respondents was conducted. The quantitative analysis demonstrates that task completion is characterized by a higher perception of the chatbot’s conversational ability and user satisfaction. The chatbot should propose correct recipe suggestions following a short dialogue, without the user needing to provide too much input. Based on these findings, we recommended equipping the skillset of task-based chatbots with elements that will complement their assistive qualities – for example, improved use of standard phrases, and reactions to similar domains and non-requests. Gender-specific differences in task completion should be considered.