坦桑尼亚县域与城乡交通通达水平空间格局特征     

张家旗  陈爽  高群  ISMAEL A. Kimirei 《中国科学院大学学报》2019,36(6):766-773

坦桑尼亚是"一带一路"倡议通向非洲、辐射非洲内陆的重要门户，它在快速城市化过程中面临交通基础设施严重短缺问题。基于坦桑尼亚公路、铁路、机场、港口、人口和城市分布数据，运用GIS空间分析技术，结合交通通达指数模型，从县域与城乡两个层面对坦桑尼亚交通通达水平的空间格局特征进行定量分析。研究发现：1）坦桑尼亚县域交通通达水平空间分布极不均衡，高值连片区主要位于东北沿海和维多利亚湖沿岸，低值连片区主要位于中央铁路线中段以北、中央铁路线南部的广大地区；2）受地理区位、资源禀赋、殖民历史、政府政策等影响，城市与乡村地区之间的交通通达水平差异十分显著。研究结果有助于坦桑尼亚制定区域交通发展政策和优化资源配置，同时对中-坦产业精准对接和产能转移具有一定的促进意义。  相似文献   

Validity and reliability of a linear positional transducer across commonly practised resistance training exercises     

Harry F. Dorrell  Joseph M. Moore  Mark F. Smith  Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73

This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R² values of >0.85 for all variables excluding deadlift mean velocity (R² = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance.  相似文献   

Managing sport volunteers with a disability: Human resource management implications     

《Sport Management Review》2019,22(5):694-707

Despite the known benefits of volunteering–such as helping others, contributing to community and the development of skills–individuals with a disability are underrepresented in volunteering roles. In this research, the authors examine the benefits and barriers to including volunteers with a disability in three Australian sport and recreation organisations, as well as the potential human resource management implications. The authors take a multi-level perspective and draw on interviews with sport volunteers with a disability, staff from sport organisations, and recipients of services from volunteers with a disability conducted in 2016–2017. Researchers have not previously examined these diverse perspectives, but they are important for understanding how to include and support sport volunteers with a disability. Analysis of the interviews revealed a wide range of benefits of including volunteers with a disability including social acceptance, social inclusion and personal development; but both volunteers and organisations identified numerous barriers to volunteering, including negative attitudes, personal factors, organisational factors and lack of social inclusion. Based on the results of this study, the authors develop recommendations for human resource management practices and policies to support volunteers with a disability in sport and recreation organisations, which are organised around an ability-motivation-opportunity framework. The results suggest that organisations need to create an environment that facilitates open, two-way communication with volunteers with a disability about their needs and wants. There also should be training and education to all volunteers and staff around an inclusive workplace culture.  相似文献   

新时代我国少数民族地区体育公共服务分层治理研究     

秦小平  胡庆山  鲁长芬  王健 《武汉体育学院学报》2019,53(8):5

采用文献资料法等研究方法对新时代我国少数民族地区体育公共服务分层治理进行研究，旨在为提高我国少数民族地区体育公共服务质量和建设体育强国提供建议。研究认为，少数民族地区体育公共服务分层治理是基于我国社会分层的现状以及各阶层体育需求和参与特征存在的差异而采取的差异性治理方式，分层治理有"因层制宜"的意蕴，有利于促进我国少数民族地区体育公共服务均等化和改变少数民族地区体育公共服务"供给不足"和"供非所需"的困境。现阶段我国少数民族地区体育公共服务分层治理的思路包括明确少数民族地区体育公共服务分层治理主体责任、完善少数民族地区体育公共服务分层治理资金保障机制、积极探索少数民族地区体育公共服务分层供给方式、构建少数民族地区体育公共服务分层治理协商机制、建立少数民族地区体育公共服务分层供给绩效评价体系。  相似文献   

高校图书馆管理制度内化的理论构建——基于扎根理论的探索性研究     

朱明  廖熙铸 《图书情报工作》2019,63(5):32-41

[目的/意义]图书馆管理制度内化是图书馆资源配置和管理创新的基础，论文旨在还原管理制度在图书馆组织内部的内化过程，并对各层级间的转换机制进行解释。[方法/过程]通过对3所案例图书馆的扎根理论研究构建高校图书馆管理制度内化的理论模型，从组织内化、过程机制和馆员内化3个维度综合考察高校图书馆管理制度内化的动因和表现，具体涵盖11个主范畴、41个范畴和164个初始概念。[结果/结论]高校图书馆管理制度内化是在图书馆组织内部构建起组织适应的内化基础后，通过过程机制形成与馆员层面匹配与转化的选择集合，最终由馆员根据理性计算和群体共识对管理制度形成内化并转化为组织内部规范内化的过程。  相似文献   

Neural embedding-based indices for semantic search     

Fatemeh Lashkari  Ebrahim Bagheri  Ali A. Ghorbani 《Information processing & management》2019,56(3):733-755

Traditional information retrieval techniques that primarily rely on keyword-based linking of the query and document spaces face challenges such as the vocabulary mismatch problem where relevant documents to a given query might not be retrieved simply due to the use of different terminology for describing the same concepts. As such, semantic search techniques aim to address such limitations of keyword-based retrieval models by incorporating semantic information from standard knowledge bases such as Freebase and DBpedia. The literature has already shown that while the sole consideration of semantic information might not lead to improved retrieval performance over keyword-based search, their consideration enables the retrieval of a set of relevant documents that cannot be retrieved by keyword-based methods. As such, building indices that store and provide access to semantic information during the retrieval process is important. While the process for building and querying keyword-based indices is quite well understood, the incorporation of semantic information within search indices is still an open challenge. Existing work have proposed to build one unified index encompassing both textual and semantic information or to build separate yet integrated indices for each information type but they face limitations such as increased query process time. In this paper, we propose to use neural embeddings-based representations of term, semantic entity, semantic type and documents within the same embedding space to facilitate the development of a unified search index that would consist of these four information types. We perform experiments on standard and widely used document collections including Clueweb09-B and Robust04 to evaluate our proposed indexing strategy from both effectiveness and efficiency perspectives. Based on our experiments, we find that when neural embeddings are used to build inverted indices; hence relaxing the requirement to explicitly observe the posting list key in the indexed document: (a) retrieval efficiency will increase compared to a standard inverted index, hence reduces the index size and query processing time, and (b) while retrieval efficiency, which is the main objective of an efficient indexing mechanism improves using our proposed method, retrieval effectiveness also retains competitive performance compared to the baseline in terms of retrieving a reasonable number of relevant documents from the indexed corpus.  相似文献   

‘Teaching’ the path towards university: understanding student access through storied-futures and meritocratic grand narratives     

Neil Anthony Buddel 《British Journal of Sociology of Education》2018,39(1):16-31

The notion that the stories of our lives shape dispositions towards imagined futures is another lens through which university underrepresentation should be viewed. A storied lens attends to how futures, like university attendance, are storied during childhood to the extent that some youth imagine, and therefore plan, these futures as natural progression. Such was the case for study participants, indicating that childhood stories contain answers for mitigating social reproduction connected to parental education and cultural forces within the home. Examining social mobility through the underexplored storied-futures grand narrative presents unique solutions that lay hidden within the dominant meritocratic grand narrative.  相似文献   

江苏省体育健康特色小镇建设现状调查分析          下载免费PDF全文

舒丽  陶玉流  张凯  王小秋 《体育科研》2019,(2):41-48

采用文献资料、实地调研与专家访谈等研究方法，对江苏省体育健康特色小镇的建设愿景与实然状态进行现状调查，并结合全国和江苏省有关体育小镇建设的宏观政策，深度挖掘体育健康特色小镇建设中存在的瓶颈与纠纷，并提出相应的策略。调研得知：江苏省体育健康特色小镇在建设过程中存在建设主体职责不明确，规划建设方向不合理，规划方案编制无灵魂，资源整合工作被忽视和专业人才匮乏等问题。在此基础上，提出找准特色核心项目，科学的规划策划，建立有效的激励与协调机制，倡导辩证的产业思维，实施专业人策略是推进江苏省体育健康特色小镇的重要举措。  相似文献   

Beyond traditional collaborative search: Understanding the effect of awareness on multi-level collaborative information retrieval     

Nyi Nyi Htun  Martin Halvey  Lynne Baillie 《Information processing & management》2018,54(1):60-87

Although there has been a great deal of research into Collaborative Information Retrieval (CIR) and Collaborative Information Seeking (CIS), the majority has assumed that team members have the same level of unrestricted access to underlying information. However, observations from different domains (e.g. healthcare, business, etc.) have suggested that collaboration sometimes involves people with differing levels of access to underlying information. This type of scenario has been referred to as Multi-Level Collaborative Information Retrieval (MLCIR). To the best of our knowledge, no studies have been conducted to investigate the effect of awareness, an existing CIR/CIS concept, on MLCIR. To address this gap in current knowledge, we conducted two separate user studies using a total of 5 different collaborative search interfaces and 3 information access scenarios. A number of Information Retrieval (IR), CIS and CIR evaluation metrics, as well as questionnaires were used to compare the interfaces. Design interviews were also conducted after evaluations to obtain qualitative feedback from participants. Results suggested that query properties such as time spent on query, query popularity and query effectiveness could allow users to obtain information about team's search performance and implicitly suggest better queries without disclosing sensitive data. Besides, having access to a history of intersecting viewed, relevant and bookmarked documents could provide similar positive effect as query properties. Also, it was found that being able to easily identify different team members and their actions is important for users in MLCIR. Based on our findings, we provide important design recommendations to help develop new CIR and MLCIR interfaces.  相似文献   

Ethical and political dimensions of action research and lesson study: reflections from a research project on a controversial issue in Cyprus     

Polyxeni Stylianou  Michalinos Zembylas 《Educational Action Research》2019,27(4):581-594

ABSTRACT

As educational interventions that integrate death issues in the school curriculum are rarely designed, implemented and evaluated, our action research (AR) project aimed at investigating the complexities of integrating the concepts of loss and grief in the primary school curriculum of Cyprus. The purpose of this paper is to identify and analyze convergences and divergences between AR and lesson study (LS), as they emerged in our project. We particularly focus on the ways that AR served to legitimate ethically and politically those aspects of the project that constituted the experimentation of lesson plans on loss and grief. The AR and LS elements of our project functioned differently and served different purposes, and we speculate that this is not irrelevant to the controversial aspects of the lesson plans’ topic, namely loss and grief. The paper argues that it may be strategically important, for ethical and political reasons, to both demarcate and associate AR and LS, navigating between them, particularly if a controversial issue is involved.  相似文献