Banach空间中一类广义混合平衡问题系统解的存在性及算法

在实Banach空间中引入和研究了一类新的广义混合平衡问题组.首先考虑了一个辅助混合平衡问题组,通过它与广义混合平衡问题组的等价性,证明了它的解的存在性和唯一性;其次构造了广义混合平衡问题组的近似解的迭代算法.在一定的条件下,证明了由算法生成的迭代序列的强收敛性,这些结果推广并改进了近期的某些结果.     

Business continuity of business models: Evaluating the resilience of business models for contingencies

Company business models are vulnerable to various contingencies in the business environment that may unexpectedly render their business logic ineffective. In particular, technological advancements, such as the Internet of things, big data, sharing economy and crowdsourcing, have enabled new forms of business models that can effectively and abruptly make traditional business models obsolete. By disrupting or even diminishing companies’ revenue streams, environmental contingencies may present a significant threat to business continuity (BC). Evaluating the resilience of business models against these contingencies should therefore be a core area of BC. However, existing BC approaches tend to focus on the continuity of the resources and processes through which a particular business model is accomplished in practice but omit the business model itself. We argue that in order for BC approaches to become holistic and strategic, business models need to become a part of the BC considerations, entailing an expansion of the scope of BC from value preservation to value creation. We propose an approach of Strategic Business Continuity Management, which consists of two parts: (1) sustaining the continuity of the company business model (value preservation) and (2) evaluating and modifying the business model (value creation). We illustrate conceptually the value creation part with an example drawn from the sharing economy.     

2018年世锦赛中日集体花球啦啦操成套创编比较研究

本文采用文献资料法,视频分析法,专家访谈法,比较分析法和数理统计法等研究方法。对2018年世锦赛中日集体花球啦啦操成套创编进行比较研究,包括三大技术技巧难度(跳步、转体、柔韧与平衡)、连接难度(集体类、技巧类、层次等)、托举与配合(托举、配合)、基本手位等。力图对这些进行定量对比分析、探究,分析中日两国成套动作差异等,以期为国内成套花球舞蹈啦啦队练习的创作和编写提供参考。     

An analysis of the reach and effectiveness of distance learning in India during school closures due to COVID-19

In India, more than 276 million children and youth were out of school for extended periods since March 2020 due to school closures in response to COVID-19. A key challenge has been how to measure the impact of responses to continuity of learning both to ensure more effective responses in the event of further disruptions, but also to help the education community conceptualize more creative and effective approaches to learning, through blended and flexible approaches. This study reflects on the findings from a UNICEF survey targeting parents and adolescents across 6 states in India, and identifies lessons learned for addressing learning inequities during future school closures. We focus on measuring three key variables – access to technology, their utilization, and perceived learning for different profiles of children. As students began learning from home, technology access rates in households were initially used to determine the estimated maximum reach of different distance learning modalities during school closures. Beyond access, we find significant variations in adolescents’ use of technology for learning purposes and their perceptions of learning, linked to the type of remote learning modality, gender, location and type of school. We discuss the implications for government strategies and policies to ensure better utilization of technologies which are available in households and to address equity gaps in learning opportunities.     

《张三丰全集》版本源流考

《张三丰全集》实为张三丰史料汇编,其内容既有本人著述,又有后人整理；既有门人撰稿,又有托名说教；既有民间传说,又有乩坛降笔；既有史志碑刻,又有笔记杂著……通过这本全集,可以全面了解张三丰及其学术成果。     

关于函数凹凸定义的一个注解

对不同教材的函数凹凸定义进行比较,对函数凹凸性的相关性质进行讨论,并对函数凹凸性的应用进行研究.     

探究共点共线的射影几何学方法

由完全四点形、调和点列或调和线束的定义,Desargues命题、Desargues逆命题或调和共轭定理,解决了三线共点、四线共点,三点共线、四点共线、五点共线或六点共线的问题．同时还应用上述定义、命题或定理解决了求定点问题、轨迹问题及作图问题。     

大学教育理念与高校“大中文”模式探讨

现代社会越来越需要具有综合素质的人才,但是在传统分科教育下培养的人才显示出知识面窄,基础不宽厚,缺乏创新后劲的弊端."大中文"人才培养模式力求实现"以人为本"的现代教育理念.这种改革可在一定程度上弥补因过早专业定向而忽视人文素养的缺陷;突出了汉语言文学专业人文精神的内涵指向,更加注重人的知识与修养的完善:并充分地考虑到了拓展学生有效的"知识平台",让学生具备较强的适应社会多元化的应变能力."大中文"人才培养模式追求的目标是:有利于中文专业的建设与发展;有利于人才素质的培养;有利于协调基础学科和社会应用之间的关系.     

弱压缩映射及其不动点定理

本文首先引入弱压缩映射的概念,证明了几类常见的压缩映射都是弱压缩映射.最后给出弱压缩映射的不动点定理,从而说明弱压缩映射是具有一般性的压缩映射.     

坚守与嬗变：汉民族服饰文化的变迁特征

千百年来汉民族的文化演变形成汉民族服饰文化。冕服的千年延续是对汉文化的坚守。服饰的几回交融促进了汉文化的嬗变。