基于WEB的高职数学立体化教学资源平台的建设

数学教学方式因受到传统教学模式的约束和传统教学思想的局限,在高职数学教学方面表现为教学方式片面化,教学资源单一化,教学行为仅限于课堂上的理论教学.尝试建立一种基WEB技术的立体化教学资源平台,利用该平台在教学过程中的应用推广,实现高职数学教学模式的变革,达到改进教学方法和提高教学效果的目的.     

From Retrieval Status Values to Probabilities of Relevance for Advanced IR Applications

Information Retrieval systems typically sort the result with respect to document retrieval status values (RSV). According to the Probability Ranking Principle, this ranking ensures optimum retrieval quality if the RSVs are monotonously increasing with the probabilities of relevance (as e.g. for probabilistic IR models). However, advanced applications like filtering or distributed retrieval require estimates of the actual probability of relevance. The relationship between the RSV of a document and its probability of relevance can be described by a normalisation function which maps the retrieval status value onto the probability of relevance (mapping functions). In this paper, we explore the use of linear and logistic mapping functions for different retrieval methods. In a series of upper-bound experiments, we compare the approximation quality of the different mapping functions. We also investigate the effect on the resulting retrieval quality in distributed retrieval (only merging, without resource selection). These experiments show that good estimates of the actual probability of relevance can be achieved, and that the logistic model outperforms the linear one. Retrieval quality for distributed retrieval is only slightly improved by using the logistic function.     

物业管理英语的文体特征及翻译策略

文章从词汇特点、句法结构和翻译策略几方面分析了物业管理英语的特点。在物业管理英语中,广泛使用同义词并用、连词or、间接指称和复杂结构,翻译时要根据这些文体特征采取相应翻译策略。     

“三维一体”运训模式的构建与实践研究*

坚持现代体育“以人为本”的教育理念,彰显体育专业的实践特色,走教学与运训相结合的发展之路,做到课内与课外相结合,实训与竞赛相结合,校外与校内实践相结合,实现课堂教学、课外活动、社会实践有机的结合,培养与发展学生的专业技能和实践能力,是当前地方本科体育院系体育改革热的。研究立足于学生主体性的发挥,发展学生的个性、创造性、独立性和协作能力,构建新的运训模式,旨在全面提高体育专业的教学质量和人才培养质量。     

Struggling with Science and Status: Physiotherapy – Including Radiology and Cancer Treatment – and Physical Education at the State University in Ghent,Belgium, 1906–1936

The establishment of new academic specialties is an intriguing research topic from a social history of science perspective. In this article we focus on the ‘scientific migration’ within the Higher Institute of Physical Education (HIPE) and the Faculty of Medicine at the State University in Ghent, Belgium. The HIPE was ‘attached’ to the Faculty of Medicine in 1908, a world first that led to an interesting triangular relationship between physical education, physiotherapy, and medicine. The physiatrists (physicians-physiotherapists) who were appointed at the HIPE had to struggle with inferior status with respect to their colleagues within the Faculty of Medicine itself. Territorial power struggles arose on several levels. In 1936, after the first generation of physicians-physiotherapists had retired, physiotherapy was integrated fully into the Faculty of Medicine, and radiology and cancer treatment – which had been considered subsectors of physiotherapy – became autonomous specialties. Physical education, however, retained its inferior academic status.     

Address Forms in Chinese and English-Speaking Culture

Address forms is one of markers of politeness and is an indispensable part of communication. An appropriate address form promotes interpersonal communication smoothly. An address form is polite in one ...     

翻译家林语堂研究

林语堂是二十世纪的著名翻译家,是少有的学贯中西的学者。其生平虽非传奇佳话,但其理论思想,学术钻研以及他在翻译,著作方面的精深造诣却颇为丰富,堪称大家。他提倡性灵,被称为是“幽默大师”的第一人。在翻译理论方面有自己独到的见解：忠实,通顺和美的标准。该文将尝试探讨翻译家林语堂的理论思想,以期获得更深刻的翻译启示。     

Effect of binocular disparity on learning anatomy with stereoscopic augmented reality visualization: A double center randomized controlled trial

Binocular disparity provides one of the important depth cues within stereoscopic three-dimensional (3D) visualization technology. However, there is limited research on its effect on learning within a 3D augmented reality (AR) environment. This study evaluated the effect of binocular disparity on the acquisition of anatomical knowledge and perceived cognitive load in relation to visual-spatial abilities. In a double-center randomized controlled trial, first-year (bio)medical undergraduates studied lower extremity anatomy in an interactive 3D AR environment either with a stereoscopic 3D view (n = 32) or monoscopic 3D view (n = 34). Visual-spatial abilities were tested with a mental rotation test. Anatomical knowledge was assessed by a validated 30-item written test and 30-item specimen test. Cognitive load was measured by the NASA-TLX questionnaire. Students in the stereoscopic 3D and monoscopic 3D groups performed equally well in terms of percentage correct answers (written test: 47.9 ± 15.8 vs. 49.1 ± 18.3; P = 0.635; specimen test: 43.0 ± 17.9 vs. 46.3 ± 15.1; P = 0.429), and perceived cognitive load scores (6.2 ± 1.0 vs. 6.2 ± 1.3; P = 0.992). Regardless of intervention, visual-spatial abilities were positively associated with the specimen test scores (η² = 0.13, P = 0.003), perceived representativeness of the anatomy test questions (P = 0.010) and subjective improvement in anatomy knowledge (P < 0.001). In conclusion, binocular disparity does not improve learning anatomy. Motion parallax should be considered as another important depth cue that contributes to depth perception during learning in a stereoscopic 3D AR environment.     

Instructional practices in secondary science: How teachers achieve local and standards-based success

This article reports on analyses of the instructional practices of six middle- and high-school science teachers in the United States who participated in a research-practice partnership that aims to support reform science education goals at scale. All six teachers were well qualified, experienced, and locally successful—respected by students, parents, colleagues, and administrators—but they differed in their success in supporting students' three-dimensional learning. Our goal is to understand how the teachers' instructional practices contributed to their similarities in achieving local success and to differences in enabling students' learning, and to consider the implications of these findings for research-practice partnerships. Data sources included classroom videos supplemented by interviews with teachers and focus students and examples of student work. We also compared students' learning gains by teacher using pre–post assessments that elicited three-dimensional performances. Analyses of classroom videos showed how all six teachers achieved local success—they led effectively managed classrooms, covered the curriculum by teaching almost all unit activities, and assessed students' work in fair and efficient ways. There were important differences, however, in how teachers engaged students in science practices. Teachers in classrooms where students achieved lower learning gains followed a pattern of practice we describe as activity-based teaching, in which students completed investigations and hands-on activities with few opportunities for sensemaking discussions or three-dimensional science performances. Teachers whose students achieved higher learning gains combined the social stability characteristic of local classroom success with more demanding instructional practices associated with scientific sensemaking and cognitive apprenticeship. We conclude with a discussion of implications for research-practice partnerships, highlighting how partnerships need to support all teachers in achieving both local and standards-based success.     

基于Voronoi的微粒群优化的三维无线传感网络节点定位算法的研究

无线传感中的节点定位一直以来都是研究的热门,为了更好的解决三维无线传感空间中节点定位不准确的问题,本文在粒子群算法基础上引入Voronoi模型,将三维空间中的节点的定位问题归纳为目标函数的最优解,证明了Voronoi模型的赋权值边存在敏感点的定理,通过定理的应用获得了目标函数的最优解,有效解决了节点定位问题。仿真实验表明,本文的算法优于对比算法具有更好的健壮性,提高了定位精度。