B3G无线通信中合作网络的一种新型无线接入方案

The paper discusses the signifi cance and development foreground of co-operation among heterogeneous networks in composite radio context for B3G wireless communications. The concept of composite reconfigurable wireless network is introduced in the paper, and the development of future wireless communication systems is also discussed. The basic confi guration framework of the network interoperation is given, and the functions of important parts are analyzed. A management platform for co-operation between WLAN...     

Fresnel incoherent correlation hologram—— a review （Invited Paper）

Holographic imaging offers a reliable and fast method to capture the complete three-dimensional （3D） information of the scene from a single perspective. We review our recently proposed single-channel optical system for generating digital Fresnel holograms of 3D real-existing objects illuminated by incoherent light. In this motionless holographic technique, light is reflected, or emitted from a 3D object, propagates through a spatial light modulator （SLM）, and is recorded by a digital camera. The SLM is used as a beamsplitter of the single-channel incoherent interferometer, such that each spherical beam originated from each object point is split into two spherical beams with two different curve radii. Incoherent sum of the entire interferences between all the couples of spherical beams creates the Fresnel hologram of the observed 3D object. When this hologram is reconstructed in the computer, the 3D properties of the object are revealed.     

以小论文进行有机化学考试的尝试

本科三年级有机化学以写小论文进行考试 ,提供了操作的雏形。试验表明 ,有利于培养学生的综合能力及科学素质 ,作法可行     

重要启示

本刊为方便广大作者的论文进行国际交流，并进一步加快我刊国际化进程，现向广大作者征集相关英语全文写作论文。对专家和编委审查合格的论文，我们将采取优先发表等优惠措施，欢迎广大作者踊跃投寄英语全文写作的学术论文。论文征集范围仍参见《发光学报》征稿简则。     

国家、部委、省、市级基金资助项目论文征稿函

中国科技核心期刊、中国期刊方阵双效期刊《电子产品世界》月刊1993年由中国科学技术信息研究所(ISTIC)与美国国际数据集团(IDG)合办。为推广国家重点电子技术成果,现公开面向全国征集获得国家、部委、省、市级基金资助项目论文。     

征稿简则

<正>《数学的实践与认识》是中国数学会所属的数学期刊,国内外公开发行.主要刊登数学的最新的理论成果,及其在工业、农业、环境保护、军事、教育、科研、经济、金融、管理、决策等工程技术、自然科学和社会科学中的应用成果、方法和经验.主要任务是沟通数学工作者与其他科技工作者之间的联系,推动应用数学在我国的发展.1.主要栏目:数学建模、管理科学、工程、应用、信息科学、问题研究、知识与进展、数     

Forewords

The Journal,固程力学学报with its Latin name Acta Mechanica Solida Sinica,was founded in 1980.It has been devoted to the publications of research papers in all fields of the solid-state mechanics and its related disciplines in science,