语段结构方法在社会媒体信息处理中的应用     

沙勇忠  陆莉 《图书情报工作》2015,59(12):120-127

[目的/意义] 社会媒体中的信息抽取是信息过载环境下创新社会媒体服务应用面临的重要问题,为此介绍一种可应用于社会媒体信息处理的语段结构方法。[方法/过程] 梳理语段结构方法的国内外研究进展,阐述其基本原理,并通过一个微博实例进行验证分析。[结果/结论] 通过以上工作,探讨将语段结构方法应用到中文社会媒体信息处理中的可行性,以及应用该方法实现中文信息机器处理所面临的研究问题与挑战。  相似文献   

体育赞助效果评估     

Christoph Breuer  Christopher Rumpf  席驰 《北京体育大学学报》2015,38(4):18-25

摘要：据普华永道2012年度报告显示,全球体育赞助投入预计在2013年将达到352亿美元,较之2012年上涨5.1%。较于体育赞助市场的蓬勃发展,体育赞助效果的评估方法仍然处于探索阶段。目前广泛应用的评估方法仅是分析赞助信息曝光度对消费者记忆度的影响。然而,消费者接收和认知赞助信息的过程却被完全忽略。为弥补这一研究领域空白,研究采用实验法,利用视线追踪技术分析消费者对赞助刺激的注意力,通过回归模型分析消费者对赞助刺激的认知处理过程。实验结果表明消费者对赞助刺激的注意力是由赞助刺激的摆放位置和影响曝光度的三种因素所决定的;另外,消费者对赞助商的回忆度取决于消费者注意力和品牌熟悉度等因素。因此,赞助商应当首要考虑赞助刺激对消费者注意力的影响。基于本实验结果建立的体育赞助效果评估模型,可以帮助赞助商评估赞助效果和赞助合约价值。  相似文献   

Perform kicking with or without jumping: joint coordination and kinetic differences between Taekwondo back kicks and jumping back kicks     

Kuangyou B. Cheng  Ying-Hsun Wang  Shih-Yu Kuo  Kuan-Mao Wang  Yi-Chang Huang 《Journal of sports sciences》2015,33(15):1614-1621

We investigated joint coordination differences between Taekwondo back kicks and jumping back kicks, and how jumping (in performing the latter) would alter engaging ground reaction forces (GRF) in executing kicking. Ten skilful athletes volunteered to perform both kinds of kicking within the shortest time for three successful trials. Three high-speed cameras and two force platforms were used for data collection, and the trial with the shortest execution time was selected for analysis. Movements were divided into the rotation and attack phases. With comparable execution time and maximum joint linear/angular speeds, back kicks and jumping back kicks differ mainly in larger GRF in the latter, and in greater target acceleration in the former probably because the support leg prevented athletes’ rebounding after impact. In addition, more prominent antiphase and in-phase coordination between the shoulder segment and knee joint, and elongated rotation phase were found in jumping back kicks. Larger GRF values in jumping back kicks were generated for jump take-off rather than for a more powerful attack. In back kicks although the support leg remained ground contact, greatly decreased GRF in the attack phase suggested that the support leg mainly served as a rotation axis.  相似文献   

基于和式太极三直五顺拳理对预防太极拳运动膝关节损伤的研究     

牛炎涛  刘巧芳 《搏击·武术科学》2015,(6)

文章通过太极拳运动对膝关节损伤的相关文献查询,得出常见的太极拳运动膝关节损伤病例,对文献结论分析得出造成损伤的因素有两个方面,一是动作技术不正确不规范造成,二是膝关节受力过重造成。通过对和式太极拳三直五顺拳理要求分析,得出五顺是太极拳动作技术要求,三直是减轻膝关节受力要求,与造成膝关节损伤的两个方面具有对应关系,提出三直五顺拳理对练习者的要求在保护膝关节损伤的重要性。  相似文献   

Effects of changing speed on knee and ankle joint load during walking and running     

Ana Cristina de David  Felipe Pivetta Carpes  Darren Stefanyshyn 《Journal of sports sciences》2015,33(4):391-397

Joint moments can be used as an indicator of joint loading and have potential application for sports performance and injury prevention. The effects of changing walking and running speeds on joint moments for the different planes of motion still are debatable. Here, we compared knee and ankle moments during walking and running at different speeds. Data were collected from 11 recreational male runners to determine knee and ankle joint moments during different conditions. Conditions include walking at a comfortable speed (self-selected pacing), fast walking (fastest speed possible), slow running (speed corresponding to 30% slower than running) and running (at 4 m · s^?1 ± 10%). A different joint moment pattern was observed between walking and running. We observed a general increase in joint load for sagittal and frontal planes as speed increased, while the effects of speed were not clear in the transverse plane moments. Although differences tend to be more pronounced when gait changed from walking to running, the peak moments, in general, increased when speed increased from comfortable walking to fast walking and from slow running to running mainly in the sagittal and frontal planes. Knee flexion moment was higher in walking than in running due to larger knee extension. Results suggest caution when recommending walking over running in an attempt to reduce knee joint loading. The different effects of speed increments during walking and running should be considered with regard to the prevention of injuries and for rehabilitation purposes.  相似文献   

Intentional thought dynamics during exercise performed until volitional exhaustion     

Natàlia Balagué  Robert Hristovski  Sergi Garcia  Daniel Aragonés  Selen Razon  Gershon Tenenbaum 《Journal of sports sciences》2015,33(1):48-57

Using a non-linear approach, intentional dynamics of thoughts were examined during constant cycling performed until volitional exhaustion. Participants (n = 12) completed two sessions at 80% W_max. Their (1) intrinsic thought dynamics (i.e., no-imposed thoughts condition) and (2) intentional thought dynamics (i.e., imposed task-unrelated thoughts condition; TUT) were recorded and then classified into four categories: internal and external TUT (TUT-I, TUT-E) and external and internal task-related thoughts (TRT-E, TRT-I). The probability estimates for maintaining each thought category stable, the rate of switching from one category to another, and the entropy dynamics along the testing procedure were assessed and compared through time phase. Friedman ANOVA tests revealed a significant effect of effort increase on thought contents only in the imposed TUT test. While TUT-I probabilities decreased significantly (P < .001) as effort increased, TRT-I probabilities increased (P < .05). Moreover, the entropy to the entire thought dynamics increased at the outset of task performance and decreased upon approaching volitional exhaustion (P < .001). As time spent in constant effort increased, and volitional exhaustion approached, task relatedness (TUT, TRT), direction (internal, external), and entropy of thought contents changed unintentionally providing further evidence for a nonlinear dynamics of attention focus.  相似文献   

水分对木质工字梁翼缘/腹板接口性能的影响     

李军伟  陈竹 《深圳职业技术学院学报》2015,(1)

木质工字梁（Wood I-Beam,简称：IB）在使用过程中将不可避免地遇到潮湿环境的影响,研究水分对翼缘/腹板接口性能的影响,对确保IB接口最佳胶合状态以及最终产品尺寸稳定性至关重要．研究结果表明：IB的综合性纤维饱和点只有25%左右;含水率从8.9%提高到25%的接口的承压能力下降了47.2%,含水率从25%提高到53%的接口的承压能力仅下降了0.6%;水分对IB翼缘和腹板尺寸变化的影响是水分影响接口承载能力的间接因素;吸湿后接口的承载能力并不能恢复到吸湿前的初始水平;解吸至8.9%含水率的IB接口的承载能力比吸湿前同等含水率的IB接口低了17.8%．  相似文献   

色彩注意心理学在环境艺术设计中的应用     

赵雪莲 《佳木斯教育学院学报》2015,(3)

色彩在环境艺术设计范畴中起着至关重要的作用,色彩注意是基于心理学的注意的特质进行的深入研究,通过分析研究表明注意心理在环境艺术设计中的不同地域、文化背景等方面表现出很大的色彩选择倾向,总结归纳出不同的环境艺术设计领域在颜色选择上应该注意的问题以及如何解决。  相似文献   

Students’ use of the interactive whiteboard during physics group work     

Magnus Strøm Mellingsæter  Berit Bungum 《European Journal of Engineering Education》2015,40(2):115-127

This paper presents a case study of how the interactive whiteboard (IWB) may facilitate collective meaning-making processes in group work in engineering education. In the case, first-year students attended group-work sessions as an organised part of a basic physics course at a Norwegian university college. Each student group was equipped with an IWB, which the groups used to write down and hand in their solutions to the physics problems. Based on a Vygotskian, dialectical stance, this study investigates how the students used the IWB in the group-work situation. From qualitative analysis of video data, we identified four group-work processes where the IWB played a key role: exploratory, explanatory, clarifying and insertion. The results show that the IWB may facilitate a ‘joint workspace’, a social realm in which the students’ dialogues are situated.  相似文献   

Supporting emotion regulation in individuals with ASD,ADHD and bipolar disorder through trauma-informed instruction and self-regulation strategies     

Lauren A. Delisio  Diane Casale-Giannola  Caitlyn A. Bukaty 《Journal of Research in Special Educational Needs》2023,23(2):136-146

Since the beginning of the COVID-19 pandemic, students have endured drastic changes in educational routines. Such disruptions can be especially challenging for students who struggle with executive functioning, self-regulation and emotion regulation, such as students with autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD) and bipolar disorder. Using a framework of trauma-informed instruction, the authors supported classroom teachers in implementing sensory spaces for students with ASD, ADHD and bipolar disorder. The project included professional development and funding for teachers to develop, procure and offer sensory tools and strategies to assist students in recognising and managing emotions. The authors collected data on the effectiveness of the sensory supports, combining teacher surveys and student behaviour data. Results indicated increased teacher knowledge on trauma-informed instruction and use of sensory supports to promote executive functioning and self-regulation and decreased target behaviours in students based on structured observation and anecdotal teacher feedback.  相似文献