科研成果 by Type: Conference Paper

This paper measures the contribution of information productivity to the economic growth by a revised Cobb-Douglas production function which takes capital, labor and information as three elements. The result shows that information productivity contributes the most to the economic growth. Meanwhile, we also compare China with other high income countries and find that information input has stronger multiplier effect in China than high income countries.

To estimate the biogenic volatile organic compound (BVOC) emissions in China, this study collected data on vegetation volume, production and distribution, converted into leaf biomass and then used BVOC emission model. In 2003, the annual BVOC emission in China was 12.83 Tg, composed of 7.45 Tg isoprene, 2.23 Tg monoterpenes, and 3.14 Tg other VOCs (OVOCs). Emissions varied significantly among plant species, with contributions ordered as follows: forests > shrubs > crops > grasslands. Southern and northeastern China were the main sources of BVOC emissions. Significant seasonal variation was found with summer contributing the most.

大型建筑物的空调通风系统存在排放废气和引入新风的动态换气过程，其中废气的再吸入是工程设计中尽可能要避免的。本文以北京某大型建筑物为例在环境风洞中进行了建筑物所排废气再吸入的实验研究，在1∶300的模型上模拟了10个排气口废气的扩散，测量了59个新风口的浓度数据，发现有若干新风口在特定风向下存在比较明显的再吸入问题。