共享经济可持续性评价：社会感知与客观绩效     

董晓松  霍依凡  赵星 《科研管理》2023,44(1):79-88

共享经济行业可持续性评价的社会感知和客观绩效不一致将造成认知错位、投资误判和政策失效等结果。本文在线挖掘2017—2019年我国主要社交媒体上29 771条文本信息，并收集行业统计数据，综合测度共享经济行业的可持续性并比较其差异。研究发现：社会公众并不认为共享经济行业具有显著的总体可持续性，而且行业实际绩效展现的可持续性与社会大众认知截然不同。进一步发现：受限于主观认知能力，社会公众认为共享经济可持续性主要来自可观察到的行业外部经济和外部生态等维度，但客观绩效表明共享经济行业内部的经济和外部的技术优势才是其可持续性的重要支撑。此外，二者评价的差异在住宿与医疗等产能共享内部过程不易被大众观察的行业中最为突出。  相似文献   

我国众创空间产业政策评价与改进策略   总被引：1，自引：0，他引：1  

柯玉珍 《科技管理研究》2018,(6)

基于数量统计方法设计的政策测量方法对2015年、2016年中央和地方(以北京市、上海市、深圳市、杭州市为例)出台的众创空间产业政策进行量化分析并比较分析中外创新创业产业政策存在的差异。研究结果表明,我国众创空间产业政策的发展在取得一定成效的同时,在政策连续性、权威性、金融支持力度方面存在问题。进一步提出促进众创空间可持续发展的改进策略,助推众创空间成熟产业政策体系的形成。  相似文献   

Sports vision training: A review of the state-of-the-art in digital training techniques     

L. Gregory Appelbaum  Graham Erickson 《International review of sport and exercise psychology》2018,11(1):160-189

Athletes need excellent vision to perform well in their sports, and many athletes have turned to vision training programs as a way to augment their traditional training regimen. The growing practice of ‘sports vision training’ relies on the notion that practice with demanding visual perceptual, cognitive, or oculomotor tasks can improve the ability to process and respond to what is seen, thereby improving sport performance. This enterprise is not necessarily new, but has been advanced greatly in the past few years by new digital technology that can be deployed during natural training activities, by perceptual-learning-inspired training programs, and by virtual reality simulations that can recreate and augment sporting contexts to promote certain sports-specific visual and cognitive abilities. These improved abilities may, in turn, instill a competitive advantage on the playing field, underscoring the potential value of these approaches. This article reviews emerging approaches, technologies and trends in sports vision training. Where available, critical review of supporting research is provided.  相似文献   

基于“投入-实施-产出”分析模型的众创空间知识产权服务网络研究     

石家齐  宋伟 《科技管理研究》2018,(8)

当今"双创"潮流下众创空间这一新型创业生态系统在国内各地迅猛发展,众创空间的发展与知识产权密不可分,做好知识产权服务能为这种新型经济模式提供有力支撑。基于创业生态系统提出众创空间的三维空间模型,围绕该模型探讨众创空间知识产权服务网络与创业生态系统的双向影响关系;并基于"投入-实施-产出"(IPO)分析模型剖析众创空间投入-实施-产出3阶段的知识产权服务网络运行现状,从环境生态圈资源供给匹配度分析服务网络运行不佳的原因,提出服务网络构建思路。  相似文献   

Learner presence,perception, and learning achievements in augmented–reality–mediated learning environments     

Yu-Hsuan Chen 《Interactive Learning Environments》2018,26(5):695-708

Although research has indicated that augmented reality (AR)–facilitated instruction improves learning performance, further investigation of the usefulness of AR from a psychological perspective has been recommended. Researchers consider presence a major psychological effect when users are immersed in virtual reality environments. However, most research on learner presence has focused on measuring it rather than the factors influencing it. This study explored the relationship between learner perception and presence in an AR-facilitated learning environment. A game-type AR learning process was developed and an experiment was implemented employing a one-group pretest–posttest method. Three sets of research instruments were developed, comprising a learning achievement test, a learner's presence inventory, and a questionnaire on learners’ perception of the AR-mediated environment. A total of 60 validated data samples were collected and statistically analysed. The researchers determined that learner presence closely relates to learning achievement and AR learning perception. These results indicate that a more satisfactory AR perception leads to a higher level of learner presence in the AR environment, thereby resulting in more beneficial learning outcomes.  相似文献   

Evaluating the perception of disability and the inclusive education of teachers: the Italian validation of the Sacie-R (Sentiments,Attitudes, and Concerns about Inclusive Education – Revised Scale)     

Anna Maria Murdaca  Sebastiano Costa 《欧洲特需教育杂志》2018,33(1):148-156

This study aimed to verify the factorial structure, internal validity, reliability, and criterion validity of The Sentiments, Attitudes and Concerns about Inclusive Education Revised Scale (SACIE-R) in an Italian sample. The SACIE-R is a useful tool to measure three aspects of teachers’ perceptions about inclusion, which are Sentiments, Attitudes and Concerns, providing valuable information to address the needs of teachers working with special students. A measure of this construct is currently not available in Italian, and a validation process is required. In order to provide an initial psychometric evaluation of the Italian adaptation, the SACIE-R was translated for use in Italian-speaking populations. Four hundred Italian teachers enrolled in educational teaching courses completed the SACIE-R. Confirmatory factor analyses demonstrated a good fit to the hypothesised 3-factor model, and adequate internal consistency for the scale was evidenced. A confirmatory factor analysis showed the same factor structural validity as the original instrument (although some items in the original version were deleted). Furthermore, taken together, the results showed a good level of reliability, and convergent and discriminant validity. Finally, the Italian version of the SACIE-R has good psychometric characteristics that can make it a useful measure of teacher attitude toward inclusion in the Italian educational context.  相似文献   

《放妻书》与现代离婚声明:塑造“人设”的媒介     

刘若衡  李晓愚 《传媒观察》2020,(5):51-58

《放妻书》是唐代敦煌地区出现的一种特别的离婚协议形式,它所反映的是一种唐代特有的"和离"制度,男女双方以"两愿离"的方式和平离婚。通过对《放妻书》文本的分析,本文阐明了《放妻书》可能的形成条件及其折射的唐代社会风貌。同时,基于对《放妻书》的分析,本文将探讨其与现代离婚声明之间的联系,并进一步提出,无论是《放妻书》还是现代离婚声明,它们都是发布者塑造和维护自身"人设"的媒介工具。  相似文献   

明喻综述   总被引：1，自引：0，他引：1  

严阵 《培训与研究》2005,22(3):22-25

本旨在通过对大量例句的分析比较，从结构、扩展方式及思维层次等方面上对明喻这一常见辞格进行系统地归纳和总结，以期对其作出相对准确、全面而又综合的诠释。  相似文献   

理解学习空间:概念内涵、本质属性与结构要素     

景玉慧  沈书生 《电化教育研究》2021,42(4):5-11

教学范式向学习范式转型之际,重新设计作为教育变革媒介的学习空间成为重要的研究命题。然而,当前对学习空间尚未形成清晰的认知。文章首先立足学习空间与学习环境交叉混用现状,通过概念辨析得到学习空间是中介物,是学习发生的间接支持条件,学习环境是刺激物,是学习发生的直接支持条件;其次,通过认识发生过程与生物学蛋白质合成过程的类比,得到学习空间具有“居所”与“转运”双重属性;最后,基于双重属性提炼出学习空间的结构要素,“居所”属性锁定的实体场所和虚拟场所,“转运”属性锁定的工具性客体和对象性客体。  相似文献   

遵循生化返规律开发儿童智力的实验     

高俊英 《人天科学研究》1997,6(3):40-41

遵循生化规律能否开发２岁儿童智力？经过１ａ的实验，结果表明，实验组２９名儿童平均智商为１２８．１４，与对照组２３名儿童平均智商１０３．９１相比较，具有显著性差异。  相似文献