电子书用户使用意愿影响模型构建与实证     

杨方铭  张志强 《图书情报工作》2020,64(9):85-94

[目的/意义] 探究用户使用电子书意愿的影响因素，以有助于电子书产业走出缓慢的发展困境。[方法/过程] 以UTAUT2、使用满足理论为基础，从需求满足和外部情景因素两个层面构建影响因素模型，并将需求满足细化为内容需求、社交互动需求和休闲娱乐需求3个测量变量。采用问卷调查方法收集有效样本1 013份，使用AMOS21软件对模型进行验证。[结果/结论] 研究发现，需求满足、阅读习惯、价格价值、社会影响对使用意愿有正向影响作用，而激励措施对使用意愿有负向影响作用，努力期望对使用意愿的影响不显著，并依据研究结果提出促进电子书产业发展的建议。  相似文献   

法庭科学领域科研伦理建设          下载免费PDF全文

彭斯璐  赵兴春  权养科 《科研管理》2019,40(9):277-281

法庭科学作为特殊的应用性科学，其研究和应用中时有涉及伦理问题，但目前中国尚缺乏法庭科学中科研伦理和行为规范问题的研究，相关伦理审查机构和审查规章仍是空白。从当前法庭科学科研伦理实践出发，针对职业伦理规范建设不足、科研伦理监管缺位以及法庭科学职业特色与伦理要求的冲突进行分析，为法庭科学研究科研伦理管理提出可参考的建议。  相似文献   

Nanomechanics of graphene     

Yujie Wei  Ronggui Yang 《国家科学评论(英文版)》2019,6(2):324

The super-high strength of single-layer graphene has attracted great interest. In practice, defects resulting from thermodynamics or introduced by fabrication, naturally or artificially, play a pivotal role in the mechanical behaviors of graphene. More importantly, high strength is just one aspect of the magnificent mechanical properties of graphene: its atomic-thin geometry not only leads to ultra-low bending rigidity, but also brings in many other unique properties of graphene in terms of mechanics in contrast to other carbon allotropes, including fullerenes and carbon nanotubes. The out-of-plane deformation is of a ‘soft’ nature, which gives rise to rich morphology and is crucial for morphology control. In this review article, we aim to summarize current theoretical advances in describing the mechanics of defects in graphene and the theory to capture the out-of-plane deformation. The structure–mechanical property relationship in graphene, in terms of its elasticity, strength, bending and wrinkling, with or without the influence of imperfections, is presented.  相似文献   

Paternal support for child sexual abuse victims: A qualitative study     

《Child abuse & neglect》2019

BackgroundThe current state of knowledge regarding the role of non-offending fathers in supporting their sexually abused children is very scarce.ObjectiveThe objective of this study is to further our understanding of fathers’ roles following disclosure of their children’s sexual abuse (SA) by evaluating fathers’ perceptions of the impact of disclosure on their involvement and support of their children.Participants and methodThis qualitative study relies on individual semi-structured interviews conducted with 17 fathers of allegedly abused children.ResultsInductive thematic analysis first highlighted that some reported a period of disengagement from the child during which they put into question their role and attitudes, followed by a period of re-involvement. This period of difficulties experienced by some fathers in regard to their involvement towards their children was due to either their own important psychological distress, their ambivalence towards their child or even because of feelings of uneasiness experienced during physical contact with them. Despite this, findings indicate the presence of thoughts and attitudes that suggest children are a source of concern for fathers. The four forms of abuse-specific support previously observed among mothers (believing the child, seeking out professional services, protecting him/her from the offender, supporting him/her emotionally) were also observed among fathers. In accordance with the activation theory, a form of support specific to fathers, namely, encouraging the child to open up to and explore the world outside the family, thereby, fostering the child’s self-esteem development, was observed and constitutes a relevant finding.ConclusionClinical and empirical implications are discussed.  相似文献   

基于C-OWA算子的业主驱动下BIM应用效益灰色聚类评价     

董娜  胡琳璐 《科技管理研究》2019,(4)

随着BIM的推广普及和深化应用，构建一套科学可行的BIM效益评价体系对推动BIM落地和效益发挥具有非常重要的现实意义。本文在文献综述的基础上，从BIM应用现状和业主方项目管理目标的视角出发，从七个维度建立了业主方驱动下的BIM效益评价指标，运用C-OWA算子赋权法和灰色系统理论进行评价，提出了业主方BIM应用效益评价指标体系，为BIM应用的前期决策和后期评价提供参考，促进BIM效益的真正发挥。  相似文献   

Online visibility of software-related web sites: The case of biomedical text mining tools     

Gael Pérez-Rodríguez  Martín Pérez-Pérez  Florentino Fdez-Riverola  Anália Lourenço 《Information processing & management》2019,56(3):565-583

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Search tactics used in solving everyday how-to technical tasks: Repertoire,selection and tenacity     

Sophie Rutter  Verena Blinzler  Chaoyu Ye  Max L. Wilson  Michael D. Twidale 《Information processing & management》2019,56(3):919-938

With greater access to computational resources, people use search to address many everyday challenges in their lives, including solving technology problems. Although there are now many useful ‘how-to’ resources online (especially videos on YouTube), it can still be difficult to identify, understand, and resolve certain kinds of technical problem. While research tasks have been studied for many years and we know the tactics people use, we know far less about searchers’ tactics for how-to technical tasks that involve actually being able to apply found information to resolve a problem. Crucial to our study was developing and studying a highly realistic, how-to technical task, for which there was no single guidance resource: making a phone safe for a child. After providing 39 participants with an actual phone to fix, and a search engine to perform the task, we analysed their search tactics using retrospective cued think aloud interviews. Our primary contribution is a set of 77 tactics used, in three categories, along with detail of how common they were. We conclude that people had a lot of tactics in their repertoire. Although it was not hard for participants to find relevant information, what was hard was for participants to find information they could use; indeed only 23% of participants successfully completed the entire task. Domain knowledge affected the choice of tactics used (although not necessarily towards better task success). We discuss these influences and make design recommendations for how future search systems can support those in resolving how-to technical tasks.  相似文献   

外部网络关系对企业双元创新的影响——基于知识视角的分析     

庞娟  靳书默 《科技管理研究》2019,39(11)

外部网络关系对企业双元创新的影响结果存在较大争议,企业维持何种状态的外部网络关系会促进双元创新,影响机理中知识吸收能力起到怎样的作用,这是亟需研究的问题。对387家企业为样本进行问卷调查,运用结构方程模型法,以知识获取能力和知识实现能力为双重中介,探析外部网络关系对企业双元创新的影响。研究结果表明：外部网络关系不同维度对双元创新具有差异化影响；网络关系强度和网络关系密度的提高以及网络关系深度的适度降低有利于渐进性创新,网络关系深度和网络关系密度的提高以及网络关系强度的适度降低更有利于突破性创新；知识吸收能力在外部网络关系对双元创新的影响中发挥部分中介作用。  相似文献   

“一带一路”战略下广西-东盟武术文化场域建设的思考     

唐露铭 《中华武术(研究)》2020,(2):97-98,103

为进一步促进武术通过广西向东南亚的发展,本文基于布迪厄“场域理论”,提出建设中国武术文化场域,提升中国武术的符号价值。在充分认识和理解东盟各国的文化、历史、宗教信仰以及本土武术文化基础之上,通过加强武术词汇翻译,提升武术传播者的东盟语言能力;充分利用“儒家文化圈”文化共通之处,发挥中国武术文化内涵之用;激发武术文化场域各要素间的有机配合,推进官方及民间武术传播的“走出去”。  相似文献   

Role of teacher-related factors and educational resources in science literacy: An international perspective     

《Studies in Educational Evaluation》2020

The study evaluated the relationship among teaching, leadership, teacher certification, student and teacher number related factors, and index of economic, social and cultural status (ESCS), and science literacy from an international comparative perspective. 2015 dataset of the Programme for International Student Assessment for Turkey, Singapore, the United States, Korea, Italy, and Brazil was used. Two-level hierarchical linear models were established for analysis. Results revealed that school ESCS was the best predictor of science literacy across six countries and additionally teacher-related factors came to the forefront of science literacy performance. The study underlined policymakers should focus primarily on policies that increase equity in education. Furthermore, the effectiveness of investments made in factors related to leadership, teacher certification, the number of students and teachers, which contribute very little to science literacy performance, need to be more questioned. Inferences about the findings were discussed in detail, and recommendations for further research were made.  相似文献