Meteor Burst Communication(MBC),a niche yet revolutionary wireless communication paradigm,exploits the transient ionized trails generated by meteors ablating in Earth’s atmosphere to enable sporadic yet resilient lon...Meteor Burst Communication(MBC),a niche yet revolutionary wireless communication paradigm,exploits the transient ionized trails generated by meteors ablating in Earth’s atmosphere to enable sporadic yet resilient long-distance radio links.Known for its exceptional resilience,robustness,and sustained connectivity,MBC holds significant promise for applications in emergency communications,remote area connectivity,military/defense systems,and environmental monitoring.However,the scientific exploration and application of MBC have long been highly challenging.In particular,under the combined influence of multiple physical field factors,the channel experiences superimposed multiple random fading effects,exhibiting bursty,highly time-varying,and strongly random characteristics.This persistent technical challenge has resulted in the absence of a practical statistical channel model for MBC to date.展开更多
The spread of social media has increased contacts of members of communities on the lntemet. Members of these communities often use account names instead of real names. When they meet in the real world, they will find ...The spread of social media has increased contacts of members of communities on the lntemet. Members of these communities often use account names instead of real names. When they meet in the real world, they will find it useful to have a tool that enables them to associate the faces in fiont of them with the account names they know. This paper proposes a method that enables a person to identify the account name of the person （＂target＂） in front of him/her using a smartphone. The attendees to a meeting exchange their identifiers （i.e., the account name） and GPS information using smartphones. When the user points his/her smartphone towards a target, the target＇s identifier is displayed near the target＇s head on the camera screen using AR （augmented reality）. The position where the identifier is displayed is calculated from the differences in longitude and latitude between the user and the target and the azimuth direction of the target from the user. The target is identified based on this information, the face detection coordinates, and the distance between the two. The proposed method has been implemented using Android terminals, and identification accuracy has been examined through experiments.展开更多
ZTE Corporation announced on January 18, 2010 that it has successfully constructed and launched the world＇s first commercial Evolution Data Optimized （EV-DO） Rev.B network. Together with Smart Telecom, one of Indon...ZTE Corporation announced on January 18, 2010 that it has successfully constructed and launched the world＇s first commercial Evolution Data Optimized （EV-DO） Rev.B network. Together with Smart Telecom, one of Indonesia＇ s CDMA telecommunication service providers, and Qualcomm, the leading developer and innovator of advanced wireless technologies and data solutions, the network has been launched in Bali, Indonesia recently.展开更多
在充分研究现有题库系统后,本文提出了基于B/S模式下的网络化题库平台(Item bank online platform,IBOP)的实现方案。IBOP平台是基于ASP.NET的4层结构模式分层设计开发,使平台具有良好的通用性、可扩展性和安全性。随后,结合Web2.0技术...在充分研究现有题库系统后,本文提出了基于B/S模式下的网络化题库平台(Item bank online platform,IBOP)的实现方案。IBOP平台是基于ASP.NET的4层结构模式分层设计开发,使平台具有良好的通用性、可扩展性和安全性。随后,结合Web2.0技术对题库系统中的关键功能模块(组卷策略模块、Word的Web访问模块等),详细阐述采用0/1背包模型的组卷算法、SOAOFFICE中间件等实现模块的思路。文中提出的网络化题库平台和资源建设思想,对其他院校题库建设提供了可借鉴的经验。展开更多
文摘Meteor Burst Communication(MBC),a niche yet revolutionary wireless communication paradigm,exploits the transient ionized trails generated by meteors ablating in Earth’s atmosphere to enable sporadic yet resilient long-distance radio links.Known for its exceptional resilience,robustness,and sustained connectivity,MBC holds significant promise for applications in emergency communications,remote area connectivity,military/defense systems,and environmental monitoring.However,the scientific exploration and application of MBC have long been highly challenging.In particular,under the combined influence of multiple physical field factors,the channel experiences superimposed multiple random fading effects,exhibiting bursty,highly time-varying,and strongly random characteristics.This persistent technical challenge has resulted in the absence of a practical statistical channel model for MBC to date.
文摘The spread of social media has increased contacts of members of communities on the lntemet. Members of these communities often use account names instead of real names. When they meet in the real world, they will find it useful to have a tool that enables them to associate the faces in fiont of them with the account names they know. This paper proposes a method that enables a person to identify the account name of the person （＂target＂） in front of him/her using a smartphone. The attendees to a meeting exchange their identifiers （i.e., the account name） and GPS information using smartphones. When the user points his/her smartphone towards a target, the target＇s identifier is displayed near the target＇s head on the camera screen using AR （augmented reality）. The position where the identifier is displayed is calculated from the differences in longitude and latitude between the user and the target and the azimuth direction of the target from the user. The target is identified based on this information, the face detection coordinates, and the distance between the two. The proposed method has been implemented using Android terminals, and identification accuracy has been examined through experiments.
文摘ZTE Corporation announced on January 18, 2010 that it has successfully constructed and launched the world＇s first commercial Evolution Data Optimized （EV-DO） Rev.B network. Together with Smart Telecom, one of Indonesia＇ s CDMA telecommunication service providers, and Qualcomm, the leading developer and innovator of advanced wireless technologies and data solutions, the network has been launched in Bali, Indonesia recently.
文摘在充分研究现有题库系统后,本文提出了基于B/S模式下的网络化题库平台(Item bank online platform,IBOP)的实现方案。IBOP平台是基于ASP.NET的4层结构模式分层设计开发,使平台具有良好的通用性、可扩展性和安全性。随后,结合Web2.0技术对题库系统中的关键功能模块(组卷策略模块、Word的Web访问模块等),详细阐述采用0/1背包模型的组卷算法、SOAOFFICE中间件等实现模块的思路。文中提出的网络化题库平台和资源建设思想,对其他院校题库建设提供了可借鉴的经验。
