Recent advances in organic synthesis with CO2 as C1 synthon

Carbon dioxide as a green, nontoxic and low-cost C1 synthon holds great potential in organic synthesis. In this paper, the recent studies of conversion of CO₂ with organic compounds (including alkenes, alkynes, amines, allylamines, propenyl ketones, propargylic alcohols/amines, arenes, and heteroarenes as well as their derivatives) to value-added chemicals are briefly reviewed.     

浅议网络环境下侵犯知识产权犯罪的取证问题

网络环境下的侵犯知识产权犯罪在取证方面存在着三个主要问题,即网络搜查行为与司法令状原则的冲突问题;网络搜查的秘密性与令状原则的权利救济的冲突问题;网络搜查的协助问题。     

船用VHF通信设备的仿真与实操评估

阐述了开发甚高频(very high frequency,VHF)仿真设备所使用的关键技术、系统结构、模块设计、开发流程以及实操评估功能的实现等.系统的实操评估采用分步评估法和层次分析法相结合,根据试题的特点确定各评估要素的权重,并依据评估要素,从任务是否完成,操纵时间和操纵步骤3点来设计评估算法,从而计算出船员的评估成绩.该仿真设备基于Microsoft Visual 2010开发工具和微软基础类库(microsoft foundation classes,MFC)开发环境,实现了对船用VHF通信设备的模拟和实操自动评估功能,用户可以通过客户终端对设备操作进行训练并得到评估成绩.