一类二元非乘积型Meyer-knig-Zeller概率算子的饱和定理

借助二元抛物线引理,探讨一类二元非乘积型Meyer-knig and Zeller概率算子的饱和性,得到了一个点态饱和定理.     

Guiding Low Spatial Ability Individuals through Visual Cueing: The Dual Importance of Where and When to Look

Research suggests that spatial ability may predict success in complex disciplines including anatomy, where mastery requires a firm understanding of the intricate relationships occurring along the course of veins, arteries, and nerves, as they traverse through and around bones, muscles, and organs. Debate exists on the malleability of spatial ability, and some suggest that spatial ability can be enhanced through training. It is hypothesized that spatial ability can be trained in low-performing individuals through visual guidance. To address this, training was completed through a visual guidance protocol. This protocol was based on eye-movement patterns of high-performing individuals, collected via eye-tracking as they completed an Electronic Mental Rotations Test (EMRT). The effects of guidance were evaluated using 33 individuals with low mental rotation ability, in a counterbalanced crossover design. Individuals were placed in one of two treatment groups (late or early guidance) and completed both a guided, and an unguided EMRT. A third group (no guidance/control) completed two unguided EMRTs. All groups demonstrated an increase in EMRT scores on their second test (P < 0.001); however, an interaction was observed between treatment and test iteration (P = 0.024). The effect of guidance on scores was contingent on when the guidance was applied. When guidance was applied early, scores were significantly greater than expected (P = 0.028). These findings suggest that by guiding individuals with low mental rotation ability “where” to look early in training, better search approaches may be adopted, yielding improvements in spatial reasoning scores. It is proposed that visual guidance may be applied in spatial fields, such as STEMM (science, technology, engineering, mathematics and medicine), surgery, and anatomy to improve student's interpretation of visual content. Anat Sci Educ. © 2018 American Association of Anatomists.     

新冠肺炎后演艺行业的走势

2020年,演艺行业虽受新冠肺炎疫情影响,但需求始终存在,并能够随着经济的增长而增长。5G、大数据中心、人工智能和工业互联的发展,将推动演艺行业在在线化、专业音视频与消费类产品融合发展。     

建国前中国共产党资本主义观的回顾与思考

1919年五四爱国运动爆发，中国开启了新民主主义革命的进程。然而与一般的资本主义国家不同，在半殖民地半封建社会时期。中国的资本主义和资产阶级有着很大的特殊性。作为代表中国最广大人民根本利益的中国共产党从1921年成立到1949年新中国建立这近三十年的时间内，不可避免地与资本主义及其资产阶级发生了千丝万缕的关系，并在不同历史阶段采取了不同的策略。总结党在这一时期的历史经验对当下中国经济社会发展仍然有很大启示和教育意义。     

多元一体国家格局下的族群互动与身份重构——以丽江为研究个案

族群身份重构是在社会文化变迁、历史记忆重构、族群认同等多种历史文化因素共同作用的结果。明清以来,多元一体的国家格局的深化,促进了内地移民与丽江纳西族之间的文化互动与融合,推动了族群身份的重构与地方文化多样性发展,对纳西族的文化变迁及发展产生了积极意义。族群认同、身份建构与国家认同之间不是彼此消长、二元对立关系,而是彼此互构、辩证统一的关系。     

浅析赫尔德思想中的多样性统一特点——以其语言、文化及民族思想为例

启蒙时代思想家赫尔德没有沉醉在知识和理性带给人们希望的幻影之中,而是冷静地对当时启蒙理性主义进行反思,力求开创出一个多样性、多元化的时代。同时,赫尔德认为,这些对浪漫主义运动有着重大指导意义的多元化思想都有其统一性,因为,真正的统一性只有在差异性中才能体现出来。     

Dialectics of design: how ideas of ‘good design’ change

This paper advances a first‐pass theory of change in the styling of objects of domestic utility. It is based on the idea that the expressive potential of design for the maker, the user and the designer exists in tension with other desirable properties of the designed artefact. Respectively these are mass availability, conformity to professionally‐defined ideas of good taste, and the demands of function and marketability. The theory is illustrated by reference to the emergence and subsequent dilution of three design movements; Arts and Crafts, Art Nouveau and certain versions of Modernism.     

Global convergence or national variation? Examining national patterns of classroom instructional practices

The world culture framework posits a convergence in the organisation of education across the world. On the other hand, scholars observing teaching practices inside classrooms find significant variation among nations and regions of the world. This study examined the global change patterns of classroom practices at the between- and within-country levels, drawing on teacher reports from the Trends in Mathematics and Science Study. Results indicate clear between-country convergence toward more student-centred and conceptual instruction. But a nation’s degree of conformity or resistance to this model was contingent upon other nation-specific factors, including centralised curriculum control or world regional location.