Robin问题的一个存在唯一性定理

对于Robin问题在主要假设f，fx，fx'．连续，fx≥-β（t），－α（t）≤fx'≤α（1＋｜X’｜）之下，给出一个存在唯一解的充分条件．     

基于Multi-Agent的多机器人控制技术

阐述了Multi Agent概念及关键技术,包括任务分解原则、通信机制及开发路线的选择等。提出了基于MA技术的多机器人系统的体系结构和基于进化算法的多机器人系统协调机制,并基于Agent概念及模块化方法设计了机器人智能控制系统。     

Printing strategies for scaling-up perovskite solar cells

Photovoltaic technology offers a sustainable solution to the problem of soaring global energy demands. Recently, metal halide perovskite solar cells (PSCs) have attracted worldwide interest because of their high power conversion efficiency of 25.5% and great potential in becoming a disruptive technology in the photovoltaic industry. The transition from research to commercialization requires advancements of scalable deposition methods for both perovskite and charge transporting thin films. Herein, we share our view regarding the current challenges to fabrication of PSCs by printing techniques. We focus particularly on ink technologies, and summarize the strategies for printing uniform, pinhole-free perovskite films with good crystallinity. Moreover, the stability of perovskite solar modules is discussed and analyzed. We believe this review will be advantageous in the area of printable electronic devices.     

A Performance Evaluation of the Collaborative Efforts in an Online Group Research Project

This study investigated the performance of 13 graduate students' collaborative efforts toward a group research project in an Instructional Analysis, Design, and Evaluation online course. Gaps between course expectations from the instructor and student collaborative performance were identified through the review of the team agreement, the use of surveys, and focus group interviews. Performance gaps occurred in the areas of communication, assignment completion, and group cohesiveness. These performance gaps were caused by lack of knowledge and skills, motivation, and/or organizational support. Appropriate intervention strategies such as effective group interaction and communication, building relationships and establishing trust, periodic review of team agreements, mini‐training sessions on collaboration and supportive behaviors, and role differentiations and collaborative task designation are presented. Instructors who are interested in incorporating group research projects into their future online courses may consider implementing these interventions to facilitate the improvement of students' collaborative efforts.     

新千年图书馆员的全职能素质要求

在论述图书馆与图书馆员将知识与大众给合到一起的从业观念;图书馆员vs.知识媒体vs.读者服务所担负的社会责任;图书馆的服务与图书馆员的角色在于社会记忆、信息传播和知识管理;图书馆演化与图书馆员的角色变化从对知识媒介的加值服务到对人的知识服务;图书馆员的素质坐标及图书馆员的素质塑造等的基础上，指出当前对图书馆员的素质要求以心理素质和沟通能力最为重要。