A measurement campaign has been conducted at 2.35 GHz with a bandwidth of 50 MHz to ob- tain the statistics and evaluate the capacity of the backhaul link. Based on the measured channel im- pulse response, the channel...A measurement campaign has been conducted at 2.35 GHz with a bandwidth of 50 MHz to ob- tain the statistics and evaluate the capacity of the backhaul link. Based on the measured channel im- pulse response, the channel gain, the eigenvalue statistics and the capacity are investigated. The distribution and corresponding parameters for describing the eigenvalue dispersion, the maximum and minimum eigenvalues are given. It is found that the backhaul link is relatively stable, which shows small variance of the channel gain. In spite of the fact that there are not many scatterers in the backhaul link, the channel rank can be enhanced by using dual-polarized antennas. Thus, the backhaul link can provide enough capacity.展开更多
This study aims to identify processes, current situations and issues of recycling systems for four home appliances, namely, air conditioners, television receivers, refrigerators, and washing machines, among e-wastes i...This study aims to identify processes, current situations and issues of recycling systems for four home appliances, namely, air conditioners, television receivers, refrigerators, and washing machines, among e-wastes in China and Japan for understanding and comparison of their characteristics. In accordance with results of a literature search, review of information disclosed online, and questionnaire survey conducted, the findings of this study are summarized in the following two points： （1） The results show that in Japan most of the home appliances mentioned above have been collected through home appliance recycling tickets, resulting in an issue of ＂requiring some effort＂ in treatment and recycling stages, and most plants have contracted out their e-waste recycling; （2） It is found out that advantages of the recycling system in Japan include easiness to monitor concrete data and thorough environmental friendliness ensured while its disadvantages include illegal dumping and export. It becomes apparent that advantages of the recycling system in China include a high reuse rate, low treatment cost, and fewer illegal dumping while its disadvantages include less safe reused products, environmental pollution caused by e-waste treatment, illegal import and difficulty in obtaining data.展开更多
Recently many researches suggest that CEO compensation is not only related to performance. And this relation is non-linear. This paper analyzes CEO compensation, salary and stockholding value with BP neutral network w...Recently many researches suggest that CEO compensation is not only related to performance. And this relation is non-linear. This paper analyzes CEO compensation, salary and stockholding value with BP neutral network with the data from listed companies during 2003--2005 in China. The results are： 1） The fitness of network outputs are 91.09%, 97：23% and 78.44% respectively; 2） The accurate of forecast improves 92.72%, 92.08% and 53.89% respectively comparing with the results of multi-regression model.展开更多
文摘A measurement campaign has been conducted at 2.35 GHz with a bandwidth of 50 MHz to ob- tain the statistics and evaluate the capacity of the backhaul link. Based on the measured channel im- pulse response, the channel gain, the eigenvalue statistics and the capacity are investigated. The distribution and corresponding parameters for describing the eigenvalue dispersion, the maximum and minimum eigenvalues are given. It is found that the backhaul link is relatively stable, which shows small variance of the channel gain. In spite of the fact that there are not many scatterers in the backhaul link, the channel rank can be enhanced by using dual-polarized antennas. Thus, the backhaul link can provide enough capacity.
文摘This study aims to identify processes, current situations and issues of recycling systems for four home appliances, namely, air conditioners, television receivers, refrigerators, and washing machines, among e-wastes in China and Japan for understanding and comparison of their characteristics. In accordance with results of a literature search, review of information disclosed online, and questionnaire survey conducted, the findings of this study are summarized in the following two points： （1） The results show that in Japan most of the home appliances mentioned above have been collected through home appliance recycling tickets, resulting in an issue of ＂requiring some effort＂ in treatment and recycling stages, and most plants have contracted out their e-waste recycling; （2） It is found out that advantages of the recycling system in Japan include easiness to monitor concrete data and thorough environmental friendliness ensured while its disadvantages include illegal dumping and export. It becomes apparent that advantages of the recycling system in China include a high reuse rate, low treatment cost, and fewer illegal dumping while its disadvantages include less safe reused products, environmental pollution caused by e-waste treatment, illegal import and difficulty in obtaining data.
基金This project is supported by National Natural Science Foundation of China （70671058）
文摘Recently many researches suggest that CEO compensation is not only related to performance. And this relation is non-linear. This paper analyzes CEO compensation, salary and stockholding value with BP neutral network with the data from listed companies during 2003--2005 in China. The results are： 1） The fitness of network outputs are 91.09%, 97：23% and 78.44% respectively; 2） The accurate of forecast improves 92.72%, 92.08% and 53.89% respectively comparing with the results of multi-regression model.
