With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social rela...With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social relations model (SRM) [1], this paper investigates interpersonal perception in virtual groups from a multilevel perspective. In particular, it examines the following three areas: homophily, identification, and individual attraction, and explores how much of these directional and dyadic relational evaluations can be attributed to the effect of the actor, the partner, and the relationship.展开更多
This study investigates the measurement of social identification, interpersonal attraction, and cohesiveness in virtual groups. Different theoretical claims about relationships in computer-mediated groups rely on meas...This study investigates the measurement of social identification, interpersonal attraction, and cohesiveness in virtual groups. Different theoretical claims about relationships in computer-mediated groups rely on measurement strategies that are shown to reflect dramatically inconsistent semantic and administration features. A review of conceptual approaches and definitions for these constructs is presented. Data were collected from groups working asynchronously via the Internet under different geographic distributions, whose members completed a variety of measures related to these constructs. Analyses generated three likely dimensions of attraction. The research highlights the need for greater specificity in reports of the actual measures used in group research, and additional conceptual concerns regarding the contested relationships among these constructs.展开更多
In this article the authors prove theorem on Lifting for the set of virtual pure braid groups.This theorem says that if they know presentation of virtual pure braid group V P_(4),then they can find presentation of V P...In this article the authors prove theorem on Lifting for the set of virtual pure braid groups.This theorem says that if they know presentation of virtual pure braid group V P_(4),then they can find presentation of V Pnfor arbitrary n>4.Using this theorem they find the set of generators and defining relations for simplicial group T_(*)which was defined in[Bardakov,V.G.and Wu,J.,On virtual cabling and structure of 4-strand virtual pure braid group,J.Knot Theory and Ram.,29(10),2020,1-32].They find a decomposition of the Artin pure braid group P_(n)in semi-direct product of free groups in the cabled generators.展开更多
针对虚拟电厂(virtual power plant,VPP)内部分布式能源渗透率提升所引发的储能损耗与弃电问题,面向包含串联电池分组控制储能系统的VPP,提出了一种优化调度方法。首先,将虚拟电厂内部负荷划分为可平移负荷、可转移负荷,并通过需求响应...针对虚拟电厂(virtual power plant,VPP)内部分布式能源渗透率提升所引发的储能损耗与弃电问题,面向包含串联电池分组控制储能系统的VPP,提出了一种优化调度方法。首先,将虚拟电厂内部负荷划分为可平移负荷、可转移负荷,并通过需求响应优化负荷曲线,以平滑负荷波动并降低新能源弃电;其次,引入基于电池分组控制的储能系统,提出综合考虑充放电转换次数、电池充电状态(state of charge,SOC)一致性及充放电效率的电池储能系统功率分配策略,以优化储能调度;最后,引入电池储能单元动态分组机制,减少充放电状态切换,以提高SOC一致性,延长储能寿命。算例验证结果表明,该方法可有效降低弃电量,提升虚拟电厂经济性,并促进新能源消纳与电力系统稳定运行。展开更多
文摘With the penetration of the Internet, virtual groups have become more and more popular. The reliability and accuracy of interpersonal perception in the virtual environment is an intriguing issue. Using the Social relations model (SRM) [1], this paper investigates interpersonal perception in virtual groups from a multilevel perspective. In particular, it examines the following three areas: homophily, identification, and individual attraction, and explores how much of these directional and dyadic relational evaluations can be attributed to the effect of the actor, the partner, and the relationship.
文摘This study investigates the measurement of social identification, interpersonal attraction, and cohesiveness in virtual groups. Different theoretical claims about relationships in computer-mediated groups rely on measurement strategies that are shown to reflect dramatically inconsistent semantic and administration features. A review of conceptual approaches and definitions for these constructs is presented. Data were collected from groups working asynchronously via the Internet under different geographic distributions, whose members completed a variety of measures related to these constructs. Analyses generated three likely dimensions of attraction. The research highlights the need for greater specificity in reports of the actual measures used in group research, and additional conceptual concerns regarding the contested relationships among these constructs.
基金supported by the National Natural Science Foundation of China(No.11971144)the State Contract of the Sobolev Institute of Mathematics+2 种基金SB RAS(No.I.1.5,FWNF-2022-0009)the High-level Scientific Research Foundation of Hebei Provincethe Start-up Research Fund from Yanqi Lake Beijing Institute of Mathematical Sciences and Applications。
文摘In this article the authors prove theorem on Lifting for the set of virtual pure braid groups.This theorem says that if they know presentation of virtual pure braid group V P_(4),then they can find presentation of V Pnfor arbitrary n>4.Using this theorem they find the set of generators and defining relations for simplicial group T_(*)which was defined in[Bardakov,V.G.and Wu,J.,On virtual cabling and structure of 4-strand virtual pure braid group,J.Knot Theory and Ram.,29(10),2020,1-32].They find a decomposition of the Artin pure braid group P_(n)in semi-direct product of free groups in the cabled generators.
文摘针对虚拟电厂(virtual power plant,VPP)内部分布式能源渗透率提升所引发的储能损耗与弃电问题,面向包含串联电池分组控制储能系统的VPP,提出了一种优化调度方法。首先,将虚拟电厂内部负荷划分为可平移负荷、可转移负荷,并通过需求响应优化负荷曲线,以平滑负荷波动并降低新能源弃电;其次,引入基于电池分组控制的储能系统,提出综合考虑充放电转换次数、电池充电状态(state of charge,SOC)一致性及充放电效率的电池储能系统功率分配策略,以优化储能调度;最后,引入电池储能单元动态分组机制,减少充放电状态切换,以提高SOC一致性,延长储能寿命。算例验证结果表明,该方法可有效降低弃电量,提升虚拟电厂经济性,并促进新能源消纳与电力系统稳定运行。
