物联网技术与产业化部署策略的研究

物联网技术是基于互联网技术基础发展起来的,是世界范围内新型技术的范畴.由于国家政策的推迟与技术标准的不确定性因素,导致在推进产业化部署等方面受到不同程度的制约.本文对物联网技术的概念、重要性与国家利好政策,同时对我国三大运营商未来商用部署与策略的探讨研究.     

基于ANP的物联网产业发展指标评价探究

从技术创新扩散能力、环境支撑能力两个方面,构建物联网产业发展指标体系;考虑到指标间的相互依赖性及反馈性,提出了基于网络层次分析法的物联网产业发展指标体系,为今后我国物联网产业发展水平评价提供科学的指标体系,研究结果表明本模型评估结果较传统层次分析法更具可信度。     

卤阳湖湿地的生态监测建设与可持续发展研究

湿地恢复研究是当今恢复生态学研究的主要内容之一。合理开发和利用湿地资源有利于促进区域可持续发展。本文介绍了陕西省蒲城县卤阳湖湿地的历史演变及主要功能,从生态、社会、经济相整合的角度分析了卤阳湖湿地目前存在的问题;以科学发展观为依据,对卤阳湖湿地恢复、开发治理进行探讨,科学提出其恢复和发展的基本策略,为当地政府制定决策提供一定借鉴意义。     

Modern development methods and tools for embedded reconfigurable systems: A survey

Heterogeneous reconfigurable systems provide drastically higher performance and lower power consumption than traditional CPU-centric systems. Moreover, they do it at much lower costs and shorter times to market than non-reconfigurable hardware solutions. They also provide the flexibility that is often required for the engineering of modern robust and adaptive systems. Due to their heterogeneity, flexibility and potential for highly optimized application-specific instantiation, reconfigurable systems are adequate for a very broad class of applications across different industry sectors. What prevents the reconfigurable system paradigm from a broad proliferation is the lack of adequate development methodologies and electronics design tools for this kind of systems. The ideal would be a seamless compilation of a high-level computation process specification into an optimized mixture of machine code executed on traditional CPU-centric processors and on the application-specific decentralized parallel data-flow-dominated reconfigurable processors and hardware accelerators. Although much research and development in this direction was recently performed, the adequate methodologies and tools necessary to implement this compilation process as an effective and efficient hardware/software co-synthesis flow are unfortunately not yet in place. This paper focuses on the recent developments and development trends in the design methods and synthesis tools for reconfigurable systems. Reconfigurable system synthesis performs two basic tasks: system structure construction and application process mapping on the structure. It is thus more complex than standard (multi-)processor-based system synthesis for software-programmable systems that only involves application mapping. The system structure construction may involve the macro-architecture synthesis, the micro-architecture synthesis, and the actual hardware synthesis. Also, the application process mapping can be more complicated and dynamic in reconfigurable systems. This paper reviews the recent methods and tools for the macro- and micro-architecture synthesis, and for the application mapping of reconfigurable systems. It puts much attention to the relevant and currently hot topic of (re-)configurable application-specific instruction set processors (ASIP) synthesis, and specifically, ASIP instruction set extension. It also discusses the methods and tools for reconfigurable systems involving CPU-centric processors collaborating with reconfigurable hardware sub-systems, for which the main problem is to decide which computation processes should be implemented in software and which in hardware, but the hardware/software partitioning has to account for the hardware sharing by different computation processes and for the reconfiguration processes. The reconfigurable system area is a very promising, but quite a new field, with many open research and development topics. The paper reviews some of the future trends in the reconfigurable system development methods and tools. Finally, the discussion of the paper is summarized and concluded.     

IS-95与CDMA2000技术的发展

目前,CDMA在成为第三代通信系统最主要的无线接入技术后,技术上出现了突习猛进,本文对现有的CDMA技术IS－95与CDMA2000技术作出比较,简要地介绍了CDMA2000的技术特点和其向3G平滑过度的演进过程,进一步探讨IS－95和CDMA2000在今后的发展趋势。     

对数螺旋线型面单向滚子离合器参数化设计

针对某对数螺旋线型面单向滚子离合器,进行了参数化设计的研究,提出了该型离合器参数化设计的一般原则,对其参数的设置进行了探讨;基于Pro/E的二次开发技术,编制了参数化的单向滚子离合器自动设计程序.该程序具有自动获取离合器参数、模型再生、自动生成工程图等功能,提高了产品设计的效率.     

解析智能化家用电器设备的现状和发展前景

家用电器是现在生活中离不开的设备,这些设备能够提高我们的生活质量,节省我们处理家务过程中的时间,对于现在快节奏的生活方式来说极为实用.在经过几十年的发展之后,家用电器的普及程度非常之高,每家每户都会有几件家用电器设备.而这也让家用电器市场进入了白热化的阶段,技术创新的瓶颈使得如今的家用电器设备没有太多的新意,如何改变发...     

中国联通有线宽带和无线宽带协同发展策略研究

经过近几年电信行业的快速发展,我国已经成为全球第二大互联网市场,不仅有线宽带发展已经进入高峰期,且去年发放3G牌照后,中国移动通信市场也迎来了大发展。在此背景下,本文结合国外运营商有线宽带和无线宽带协同发展的案例研究,给出中国联通有线宽带和无线宽带协同发展的建议。     

我国与世界通信技术发展述评

电信业是一个高技术主导型产业,技术领域的变革对于电信业市场及业务发展起着至关重要的作用.本文试图抓住当今世界通信技术发展的脉搏,概括总结了当今及今后较长一段时期内的技术热点,分析了我国与世界先进技术水平的差距,并提出了一些合理化建议,以期对电信业市场及业务发展起到促进作用.     

军用ASIC对策的探索与思考

本文从军用ASIC的技术基础,需求牵引和效益目标出发,论述了军用ASIC的发展模式和对策。建立军用Foundry,在通用CAD基础上实现军用ASIC的CAD工具是必要的。门阵列和标准单元是两种主要方法。从全定制向单元库过渡,是发展军用模拟ASIC和A/D ASIC的可行方案。努力发展整机-元器件垂直集成,提高ASIC的“自用率”,有利于促进军民结合。