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
Inward foreign direct investment （FDI） is expected to grow further by virtue of economic globalization. A thorough understanding of the locational determinants of inward FDI will be conducive to enhanced efficiency ...Inward foreign direct investment （FDI） is expected to grow further by virtue of economic globalization. A thorough understanding of the locational determinants of inward FDI will be conducive to enhanced efficiency in attracting direct and SOC-related investments from foreign entities. This study analyzes 51 cases of inward direct foreign investment made in the Incheon free economic zone （IFEZ） from 2002 to 2009 to determine the factors influencing FDI volume, the relevance of locations and the correlation between investment size and location. First, the relationship between the loeational determinants of FDI and the total investment size （total expected project cost） is analyzed. Second, the relationship between the locational determinants of FDI and the FDI is analyzed. Third, the relationship between the locational determinants of FDI and the location choice is analyzed. The results indicate the determinants that influence locations and investment size of FDI entities; whether these factors exercise influence in the zone; and the factors that have relatively significant effects. Ultimately, based on the analytical findings, a few implications for policy and practice are derived.展开更多
车联网(Internet of Vehicles,Io V)被认为是物联网中最有可能率先突破应用的一个重要分支,成为目前研究的重点和热点.其中,车辆节点的定位和位置感知技术是车联网的技术核心,不仅关系到车辆行驶过程中的安全,而且影响着车联网的发展前...车联网(Internet of Vehicles,Io V)被认为是物联网中最有可能率先突破应用的一个重要分支,成为目前研究的重点和热点.其中,车辆节点的定位和位置感知技术是车联网的技术核心,不仅关系到车辆行驶过程中的安全,而且影响着车联网的发展前景.首先,提出了车联网定位和位置感知的评价标准,介绍了无线定位测距技术的实现原理和方法.在此基础上,重点阐述了车联网的定位和位置感知技术,讨论了相关算法以及在车联网中的应用特点.最后,在综合分析了现有研究成果的同时,对未来的研究方向进行了展望.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Inward foreign direct investment （FDI） is expected to grow further by virtue of economic globalization. A thorough understanding of the locational determinants of inward FDI will be conducive to enhanced efficiency in attracting direct and SOC-related investments from foreign entities. This study analyzes 51 cases of inward direct foreign investment made in the Incheon free economic zone （IFEZ） from 2002 to 2009 to determine the factors influencing FDI volume, the relevance of locations and the correlation between investment size and location. First, the relationship between the loeational determinants of FDI and the total investment size （total expected project cost） is analyzed. Second, the relationship between the locational determinants of FDI and the FDI is analyzed. Third, the relationship between the locational determinants of FDI and the location choice is analyzed. The results indicate the determinants that influence locations and investment size of FDI entities; whether these factors exercise influence in the zone; and the factors that have relatively significant effects. Ultimately, based on the analytical findings, a few implications for policy and practice are derived.
文摘车联网(Internet of Vehicles,Io V)被认为是物联网中最有可能率先突破应用的一个重要分支,成为目前研究的重点和热点.其中,车辆节点的定位和位置感知技术是车联网的技术核心,不仅关系到车辆行驶过程中的安全,而且影响着车联网的发展前景.首先,提出了车联网定位和位置感知的评价标准,介绍了无线定位测距技术的实现原理和方法.在此基础上,重点阐述了车联网的定位和位置感知技术,讨论了相关算法以及在车联网中的应用特点.最后,在综合分析了现有研究成果的同时,对未来的研究方向进行了展望.
