Research on Telecommunication Based on JAVA

This paper discusses how a network communication isimplemented on the basis of java language under pro-gramming interface of network operating system whichrealizes TCP/IP network protocol.The design and appli-cation of java is successfully combined with Internet.In-ternet protocols such as Telnet,FTP,WWW etc.are sup-ported by Java with network classes in which there arevarious methods.While these methods are called fiexible,a telecommunication is implemented.Furthermore,us-ing telnet protocol for the network communication is alsodiscussed in this paper.     

"对称三角形圆截面卷铁芯三相配电变压器"节能分析与研究

针对三角形结构的圆截面卷铁芯三相配电变压器,主要从磁路(磁路分析、高次谐波)、空载损耗(磁滞损耗、涡流损耗)及空载电流等方面进行分析推理计算,证明此对称三角形圆截面卷铁芯三相配电变压器是节能型变压器.     

中心对称的对羟基苯甲酸-尿素超分子晶体的SHG效应

利用超分子组装方法获得对羟基苯甲酸（1）和尿素以及对硝基苯酚（2）和三乙烯二胺的超分子组装晶体，经X射线衍射测定单晶结构，前者晶体为中心对称结构，空间群为P2/n，后者为非中心对称结构，空间群为P21，经锁模皮秒激光器测试，前者呈现SHG效应，后者却几乎不呈现SHG效应，在超分子晶格中，前者β值分子为尿素，受到共存的对羟基苯甲酸分子的作用，从而改变了它友晶格中的彼此间的距离，使之能够部分地保持各自独立的超极化分张量，而呈现SHG效应；后者β值分子对硝基苯酚，由于它在晶格中的紧密层状堆积，导致偶极抵消，超级化分张量乎为零，SHG效应很小。     

Designation and Realization of Softswitch-based Remote Video-monitoring System

In this paper, architecture of softswitch-based Next Generation Network （NGN） system and Session Initiation Protocol （SIP） are studied briefly, and the problems on the openness and extensibility of normal remote video-monitoring system （RVMS） are analyzed. Then a RVMS framework model based on softswitch is given. Furthermore, designation and realization of the system based on T 6000 Softswitch Platform is provided. The innovation is considering the RVMS as a part of softswitch system. It is a feasible scheme for implementing next generation video-monitoring system based on broadband IP technique.     

中药材粉末X衍射Fourier图谱数据库

根据粉末X衍射分析方法鉴定中药材的原理，建立了具有浏览、编辑、衍射数据检索和衍射图谱的自动识别等功能的“中药材粉末X衍射Fourier图谱数据库”，特别是在衍射图谱的自动识别上，实现了未知衍射图谱的图形识别和图谱之间的叠合，具有一定的应用价值。     

无线校园网的设计研究

结合校园网实际应用需求,在现有校园网络的基础上,对未来的校园无线局域网进行了规划设计.设计内容包括无线拓扑方案、管理与安全方案等.在改善前台分布式AP部署、采用基于角色的LDAP统一认证系统的同时,实现了有线网络与无线网络的统一.在设计过程采用了经验、计算与仿真验证相结合的方式,在实证测试的基础上提出了一个安全、可靠、可管理的无线校园网建设方案.     

SHG from centrosymmetric supermolecular crystal

Supermolecular crystal composed of p-nitrophenol, hexamethylenetetramine, phosphoric acid and water was obtained by supermolecular assembly. The crystal has a centrosymmetric structure with space group P21/c. The relative intensity and integral value of green frequency doubling of light from the crystal powder compared with that from KDP powder measured by pico-second Nd:YAG laser are 757.3 (KDP: 183.4) and 1771.7 (KDP: 423.98), respectively. In supermolecular crystal, due to the arrangement of centrosymmetric p-nitrophenol molecules in the inorganic-organic host framework formed by hexamethylenetetramine, phosphoric acid and water, the distances between the p-nitrophenol molecules with centrosymmetry are changed (N1A-O1A: 0.8158 nm, N1B'-O1B: 1.4450 nm, N1A-N1A': 0.5837 nm, N1B'-N1B: 0.6898 nm), and the interaction between the dipoles becomes weak, which is easy for the ground state to turn into the excited state charge separated form, and generate the stable asymmetrical distribution of π-electron clo     

扁电阻丝在线检测控制系统的研制

本文着重讨论了如何集扁电阻丝的厚度、长度与电阻值检测为一体,在线检测电阻丝的厚度、长度和每米电阻值,分析了厚度和电阻检测电路的工作原理,以及如何实现电脑对整个系统的控制,以保证电阻丝生产质量的一致性。     

中心对称的对氨基苯甲酸-尿素超分子晶体的SHG效应

利用分子组装方法获得了对氨基苯甲酸/尿素超分子晶体，经X衍射单晶结构测定，晶体为中心对称结构，空间群为Pnab；经Nd；YAG皮秒激光器测试晶体粉末，以KDP粉末为参比，超分子晶体粉末的绿色倍频光的相对强度和积分值分别为80.20(KDP,176.40）和181.0（KDP，423.98），在超分子晶格中，尿素分子受到共存的对氨基苯甲酸分子的相互作用，改变了尿素分子在晶格中的彼此间的距离或取向，使中心对称的基态偶极矩的相互作用偏离最佳状态，能够部分地保持各自独立的超极化分张量，而呈现SHG效应。     

Study Application of RADIUS Protocol on Ethernet

The Radius Principle and Application in Dial up Network　　 Radius is a widely used protocol in networkenvironments. The Radius protocol was originallydeveloped by Livingston Crop , and it defines a protocol,according to which the authentication, authorization andconfiguration information are transported between NAS(Network Access Server) and Radius Server. There is adatabase of authentication information which can be usedto validate the client s a…