一、未知的好戏需要免费的门票电子商务在未来商业社会中的重要地位已是一个不争的事实。借用一则电话公司的广告词来说,如果一个公司没有网站,也许根本就不存在。但是如何进入这一新的领域,或所谓的 e 化现行的工作方式则依然是一个重...一、未知的好戏需要免费的门票电子商务在未来商业社会中的重要地位已是一个不争的事实。借用一则电话公司的广告词来说,如果一个公司没有网站,也许根本就不存在。但是如何进入这一新的领域,或所谓的 e 化现行的工作方式则依然是一个重大问题。尽管有许多非常成功的例子。展开更多
This paper proposes a novel intelligent estimation algorithm in Wireless Sensor Network nodes location based on Free Search,which converts parameter estimation to on-line optimization of nonlinear function and estimat...This paper proposes a novel intelligent estimation algorithm in Wireless Sensor Network nodes location based on Free Search,which converts parameter estimation to on-line optimization of nonlinear function and estimates the coordinates of senor nodes using the Free Search optimization.Compared to the least-squares estimation algorithms,the localization accuracy has been increased significantly,which has been verified by the simulation results.展开更多
Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been dow...Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been downloaded for free and consist mainly in scientific texts and other documents,tables,graphics,atlases and animations.展开更多
基金National Research Foundation for the Doctoral Program of Higher Education of China(No.20060266006)the High-school Natural Science Research Foundation of Jiangsu Province(No.07KJB510095)
文摘This paper proposes a novel intelligent estimation algorithm in Wireless Sensor Network nodes location based on Free Search,which converts parameter estimation to on-line optimization of nonlinear function and estimates the coordinates of senor nodes using the Free Search optimization.Compared to the least-squares estimation algorithms,the localization accuracy has been increased significantly,which has been verified by the simulation results.
文摘Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been downloaded for free and consist mainly in scientific texts and other documents,tables,graphics,atlases and animations.
