首次全国无线电管理

10月12日至15日,首次全国无线电管理厅（局）级干部研讨班在北京举办。研讨班提出．面对无线电事业飞速发展的新形势．各级无线电管理机构要进一步增强对无线电管理工作重要性的认识．肩负起无线电管理工作的历史使命,全面提升无线电管理水平．更好地为国家经济建设、国防建设和维护社会稳定服务。     

站在新的历史高度重新认识无线电管理工作

2009年是中华人民共和国成立60周年．同时也是落实“十一五”规划关键性的一年。在刚刚落幕的全国无线电管理工作座谈会上．来自全国各地和军队的无线电管理代表就在新形势下如何进一步做好无线电管理工作进行了一番热烈的讨论。笔者认为．在新形势下．无线电管理应该站在历史的高度上重新认识无线电管理职能及其重要性,全面部署无线电管理工作．推动我国经济建设、社会生活蓬勃发展和无线电管理事业继往开来。     

积极进取 服务大局扎实推进无线电管理工作

2009年在国家无线电办公室和江西省工信委党组的领导下，江西省无线电管理机构深入学习实践科学发展观，紧紧围绕国家无线电管理工作总目标．克服困难．锐意进取．对讲机清理、基础设施建设、重大任务保障和打击考试作弊等各项工作均取得了显著成效，为推动江西省经济社会发展和维护社会稳定作出了积极的贡献。     

全面提升无线电管理水平为“十二五”发展开好局——各地无线电管理机构领导谈思路——真抓实干 锐意进取 努力实现无线电管理新跨越

2010年,在辽宁省经济和信息化委员会的领导下,在工信部无线电管理局的支持和指导下．辽宁省无线电管理机构坚持以科学发展观为指导,积极服务于辽宁工业更好更快发展的目标,加强无线电管理的规范化和制度化建设,维护稳定,保障安全,促进发展,圆满完成了全年各项工作任务。一年来。全省无线电管理机构重点加强无线电频率管理,服务经济社会发展：加强无线电台站管理．     

围绕中心 积极作为为建设经济文化强省服务

2009年，山东省无线电管理机构以服务经济社会发展为己任，开拓创新．扎实工作．频率台站管理取得新成绩，电波秩序维护取得新成果．技术监管能力得到新提升．技术设施建设实现新突破，各项工作均取得了显著进展。特别是．为了给十一届全运会提供良好的无线电保障，     

提升无线电管理水平 服务广西经济建设

近年来,在广西无线电事业飞速发展的新形势下,广西无线电管理部门以科学发展观为指导,积极响应＂做大做强做优广西工业＂的战略,不断探索无线电管理的新方法、新思路,助推广西新型工业化发展和＂两化＂融合,全力保障无线电安全,为广西经济社会发展作出了贡献。特别是在边境、水上、民航等无线电管理工作方面取得了显著成绩,积累了宝贵经验。本专辑特全面展示广西无线电管理工作的经验,与广大读者分享交流。     

夯实基础强化职能服务经济社会发展大局

2009年,海南省无线电管理办公室坚持以科学发展观为指导．认真贯彻落实无线电管理方针、政策和法律法规．加快无线电技术设施建设,不断加强无线电频率台站管理,大力推进依法行政,积极开展技术人才的培养,圆满完成了各项工作任务。     

着眼大局 扎实工作 为西藏社会稳定和经济建设服务

2008年．我办在西藏自治区政府和区通信管理局党组的领导下，在国家无线电办公室的指导下，坚持以科学发展观统领我区无线电管理工作全局，围绕“规范管理、加快发展、搞好保障、维护稳定”这一目标．立足西藏实际．积极开拓进取．各项工作均取得了明显成效。一年来，经全体干部职工的密切协作和共同努力，频率台站管理更加规范．无线电监测工作明显加强．     

建立无线电发射设备销售市场备案制度的探索

无线电管理是政府部门的一项重要行政职能。合理利用频谱资源,加强无线电台站管理,维护空中电波秩序．从而保障各种无线电业务的正常运行．为经济社会发展和国防建设服务．这是无线电管理部门的重要使命。但是由于目前国家和地方无线电管理相关法律法规尚不完备,无线电设备销售市场成为无线电管理中的薄弱环节,给无线电管理工作的开展带来了很大的困难。     

浅议无线电管理信息化

近年来,伴随着网络信息技术的快速发展和广泛应用,我国无线电管理信息化建设取得了长足的进展．无线电管理的整体水平得到全面提升。本期的”管理信息化”专题．回顾了我国无线电管理信息化建设的历程．介绍了有关网络系统建设、网络管理系统建设的情况,以及组件技术、多媒体技术在无线电管理信息化中的应用状况,探讨了无线电监测机房动力环境集中监控系统的设计思路,展示了无线电管理信息化领域所取得的新的实践和研究成果。     

GEMNET: a generalized, shuffle-exchange-based, regular, scalable,modular, multihop, WDM lightwave network

GEMNET is a generalization of shuffle-exchange networks and it can represent a family of network structures (including ShuffleNet and de Bruijn graph) for an arbitrary number of nodes. GEMNET employs a regular interconnection graph with highly desirable properties such as small nodal degree, simple routing, small diameter, and growth capability (viz. scalability). GEMNET can serve as a logical (virtual), packet-switched, multihop topology which can be employed for constructing the next generation of lightwave networks using wavelength-division multiplexing (WDM). Various properties of GEMNET are studied     

Thermodynamics of copper matte converting: Part III. Steady-state volatilization of Au,Ag, Pb,Zn, Ni,Se, Te,Bi, Sb,and As from slag,matte, and metallic copper

A comprehensive compilation of various thermodynamic data required for a complete analysis of copper matte converting reactions is presented. The data comprise estimated free energies of formation for such gases as SeO, SeS, TeO, TeS, BiO, BiS, SbO, SbS, AsO, and AsS, as well as activity coefficients in dilute copper alloys and vapor pressures of various elements and compounds. The volatilization of minor elements in steady-state reactors comprising gas and several condensed phases is mathematically formulated, and a parameter which governs the volatilization in such reactors is defined and named volatilization constant. The vapor pressures of various volatile species are calculated thermodynamically for the Noranda Process reactor by assuming equilibrium conditions. The volatilization constants of various minor elements are expressed explicitly as functions of oxygen and sulfur activities. Formerly Associate Professor, Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT     

Bits, symbols, bauds, and bandwidth

The use of clear, concise, and unambiguous language in telecommunications engineering is vital to communicate a desired meaning and understanding. Terminology should be based on rigorous engineering principles and traceable to well known and dependable sources. This article deals with four everyday terms commonly encountered in the popular semi-technical press as well as in serious engineering periodicals. The misuse of these and other terms can lead to low-balled cost proposals, court litigation, and patent infringement cases. Imagine how an engineering student can be confused when she/he typically encounters bandwidth measured in bits per second     

Novel planar, square-shaped, dielectric-waveguide, single-, and dual-mode filters

This paper presents a novel concept of a square-shaped dielectric-waveguide resonator, which can easily realize a dielectric-waveguide cross-coupled filter or a dielectric-waveguide dual-mode filter, using the conventional printed circuit board (PCB) process. This planar dielectric-waveguide resonator has a higher Q value than a microstrip resonator. The physical mechanisms of both single- and dual-mode filters are elucidated. Some new coupling structures are developed for undergoing the PCB process. Filter design procedures are detailed. Design curves for the coupling coefficients of internal- and external-coupling structures are determined by full-wave finite-element-method electromagnetic calculations. Measurement results are highly consistent with theory for all trial filters. This study offers an effective means of producing low-cost high-performance planar circuit filters.     

PBX技术.市态.营销.选购

本文介绍了ＰＢＸ交换机的技术及市场需求态势。并提出ＰＢＸ产品的营销要素及其用户在选购时应遵循的原则。     

Dilemmas,uncertainty, risks,and board performance

This paper traces the origins of the words risk, uncertainty, governance and development and argues that a deeper understanding of each allows more effective decision taking in the boardroom. It argues that the role of the board of directors is to balance and rebalance continuously their irresolvable dilemma — ‘how do we drive our enterprise forward while keeping it under prudent control?’ It argues that it is the board’s role to focus on uncertainty, rather than risk, and this requires a different set of intellectual skills from board members to be able to cope with monitoring a range of diverse scenarios. This is crucial for a board to develop stronger ways of both leading their organisation and of ensuring the connectedness of the learning within and between the board and the operational unit’s risk taking. It advocates that to achieve this a board must develop new ways of learning — especially of thinking strategically and becoming more sensitised to the dynamics of their changing external environments. This will take them well beyond the comforts of their specialist managerial disciplines and into the true world of directing. The paper demonstrates the importance of continuous learning in reducing organisational uncertainty and risk. It uses the ‘Learning Board’ process and model as the central processor of both strategic and operational learning to create an annual rhythm for the board’s year.