Arts sponsorship and the state of the city

This paper explores the correlation between metropolitan social and economic conditions and corporate arts support in the United States. It is hypothesized that the transition from a manufacturing sector economy to an advanced service sector economy is an important local factor for the increase in corporate arts support.By panel analysis, in eleven metropolitan areas between 1977 and 1991 changes in corporate arts support have been correlated with changes in social and economic conditions, i.e., service sector and manufacturing sector employment, service sector and manufacturing sector income, population's educational attainment, and the degree of dominance by the leading local arts supporting industry.Corporate arts support is higher in metropolitan areas where the population is better educated (=+0.60), the local service sector generates more income (=+0.37) and the local manufacturing sector generates less income (=–0.22).Corporations from the manufacturing sector are mostly indifferent towards arts support. In contrast, corporations from the service sector are supportive of the local arts but they also respond swiftly to a loss in their earnings by discontinuing their arts support.     

竞争战略差异度的定量研究

本文认为可以把竞争战略差异度作为竞争情报分析工具之一。战略差异度在预测产业发展和演进、资本市场的投资赢利回报、企业战略转移的难易性等方面具有特殊的意义。     

关于具有两个二次代数曲线解的三次系统的极限环

本文介绍近年来在这方面研究的进展情况,同时给出一些新的结果,并提出一些尚未解决的问题。     

Relationship transitions for parents of children with autism spectrum disorder: types,turbulence, and transition processing communication

This study surveys transitions specific to parents of children with autism spectrum disorder (ASD), examines how aspects of relational turbulence vary based on the type of transition experienced, and explores the transition processing activities couples use to navigate marital transitions in this context. The study examined the transition experiences of 298 parents of children with ASD who were currently married. Participants detailed an important transition throughout the life span of their child with ASD using open-ended questions. They completed scales assessing qualities of the relationship during the transition and transition processing communication used to navigate the experience. Results demonstrate significant differences in experiences of relational turbulence based on the type of transition described. In particular, the initial diagnosis received the highest ratings for transition magnitude and relational turbulence compared to other common transitions. Engagement in transition processing communication predicted relational uncertainty and facilitation from a partner, which predicted relational turbulence.     

公共图书馆转型背景下的噪音问题——基于微博的调查

文章以用户在微博上发表的对公共图书馆噪音的看法为数据来源,使用内容分析和情感分析方法研究用户对噪音的认知,分析噪音的来源。研究发现:用户对公共图书馆的噪音问题表示关注和不满;大城市公共图书馆被用户提及最多;用户认为安静才是公共图书馆的应有之义;在用户认为的噪音来源中,用户因素远高于其他因素,最主要的噪音源是少年儿童吵闹。对策包括:转变用户对公共图书馆严肃安静的刻板印象;依据用户需求合理规划空间;改进馆内管理工作。     

A new approach to explore the knowledge transition path in the evolution of science & technology: From the biology of restriction enzymes to their application in biotechnology

In this contribution, we develop a new approach to explore the process of knowledge transition from discovery-oriented science to technological fields, via applications-oriented research, including a mediator set. This trajectory is referred to as the D-A-T trajectory. It is shown how it can be constructed and measures are proposed to characterize the relational strength among different environments (discovery oriented research, applications-oriented research and patents) and the speed of evolution. Our approach is illustrated by a case study of three fundamental restriction enzymes articles. Among other results we found that 387 patents cited 124 of the 988 articles (a share of 12.55%) in the mediator set. Defining the non-patent references (NPR) transition rate as the number of citing patents divided by the number of articles in the mediator set yields a value 0.392. Our results suggest that the D-A-T path acts as a backbone and reveals important “invisible contributions” of an original scientific work during its evolution from discovery oriented research to outside academia. Our contribution provides a useful tool for bridging the existing gap in detecting the transition of knowledge between science and technology.     

有关素理想分解问题的探讨

设F为域,F不含l次本原单位根,令(4)为F的秩为1的非平凡,非阿基米德赋值,r为与其相对应的赋值环,P为r的极大理想.本文讨论了P在F的根扩张F(μ1/l)(μ∈r)中的分解形式与p在F(ξ1)(ξ1为l次本原单位根)中的任意扩张p'在F(μ1/l,ξ1)中的分解形式的关系问题[定理1,2],并讨论了F关于P的剩余类域为有限时,P'在F(μ1/l,ξ1)中的分解问题[定理3].     

Identification of twist-angle-dependent excitons in WS2/WSe2 heterobilayersOA

Stacking atomically thin films enables artificial construction of van der Waals heterostructures with exotic functionalities such as superconductivity, the quantum Hall effect, and engineered light-matter interactions.In particular, heterobilayers composed of monolayer transition metal dichalcogenides have attracted significant interest due to their controllable interlayer coupling and trapped valley excitons in moiré superlattices. However, the identification of twist-angle-modulated optical tr...     

Photonic orbital angular momentum with controllable orientation

Vortices are whirling disturbances, commonly found in nature, ranging from tremendously small scales in Bose-Einstein condensations to cosmologically colossal scales in spiral galaxies. An optical vortex, generally associated with a spiral phase, can carry orbital angular momentum (OAM). The optical OAM can either be in the longitudinal direction if the spiral phase twists in the spatial domain or in the transverse direction if the phase rotates in the spatiotemporal domain. In this article, we demonstrate the intersection of spatiotemporal vortices and spatial vortices in a wave packet. As a result of this intersection, the wave packet hosts a tilted OAM that provides an additional degree of freedom to the applications that harness the OAM of photons.     

“技术—组织—环境”视域下数字经济赋能低碳转型发展的路径

数字经济的蓬勃发展为深入推进低碳转型提供了有力的技术、管理和制度手段,但我国现阶段仍存在数字技术创新水平有限、数字人才供给能力不足、数字治理体系亟待健全等问题,制约了数字经济对于低碳转型发展的赋能作用。文章基于“技术—组织—环境”（TOE） 框架,探讨数字经济对低碳转型发展影响的技术迭代路径、管理变革路径及制度优化路径,阐述数字经济在低碳转型发展中的重要作用,为促进我国发展数字经济助力“双碳”目标实现提出政策建议。