共查询到19条相似文献,搜索用时 406 毫秒
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小区接入直接面向个人用户,要求能以尽可能低的价格构建小区网络,并以该网络为支撑平台,开展诸如安全管理、物业管理、用户互联、网上购物、视频点播等多种社区智能服务.因此,该网络应是一个具有高带宽、高可靠性、低建设和维护成本的网络. 相似文献
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基于智能全光电网技术的智能用电小区应用方案研究集合了“三网融合”、PFTTH和智能用电技术,通过连接家家户户的智能全光电网络,承载智能用电双向交互服务,能够引导用户科学用电,降低了未来智能用电小区建设和使用成本。 相似文献
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智能小区作为智能化建筑的延伸和拓展,是智能化城市的基本单元,已成为建筑行业中的一个新热点。智能小区主要通过对小区建筑群的四个基本要素(结构、系统、服务、管理以及它们之间的内在关联)的优化考虑,为用户提供一个投资合理,又拥有高效率、舒适、温馨、便利以及安全的居住环境。 相似文献
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自2016年网络直播平台兴起,就备受年轻一代的狂热追捧.随着互联网、大数据、5G等新技术的发展,网络直播呈现爆发式的增长.本文以网络直播平台中的佼佼者——斗鱼TV为研究对象,从内容生产模式、传播方式、成本构成、盈利方式等方面详细分析斗鱼TV的运营模式,指出斗鱼TV运营中存在的一系列问题,如进入门槛低,内容低俗化、同质化问题严重;市场竞争激烈,营收受到严重影响,而成本居高不下;引导力度不够,付费率低等.并给出加强网络文明建设,优化直播内容;调整主业务方向,多元化盈利模式;维护用户增长,引导消费等建议. 相似文献
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根据全生命周期成本理论和上海市统计数据,分析维修成本、运营成本等指标的变化趋势和概率分布,在估计生态住宅节能率分布的基础上,模拟计算生态住宅和非生态住宅全生命周期成本,得到成本的期望和置信区间。最后,计算生态住宅的平均建筑节能投资回收期,并从经济角度分析生态住宅是否真的节约成本,带来效益,为购房者及开发商提供选择与判断的依据。 相似文献
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陶传杰 《经济技术协作信息》2007,(18):22-22
作为现代化的智能化住宅小区,向社区内的广大住户提供宽带多媒体综合信息资讯服务,是智能化住宅的重要体现,也是信息社会发展的客观需要。智能化住宅小区通信网络是小区内综合信息服务、小区与外界广域网连接、小区智能物业管理的物理平台。构建小区通信网络平台,要考虑网络提供综合信息与资讯服务的能力,网络的先进性、扩展性、性价比以及开发商(用户)对投资费用的承受能力。综合考虑各方面因素,小区宽带趣信网络平台采用以大网或有线电视HFC网,也可采用两者结合的方式。 相似文献
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邓勋 《技术经济与管理研究》2013,(7)
能源的综合有效利用是我国实现社会低碳经济和绿色发展的重要手段.结合综合能源系统的特点,提出了综合能源系统投资建设模式的设计原则,分析了其投资建设主体,并提出了四种适应我国现有国情下的投资建设模式,包括BOT/BOO模式、租赁模式、企业投资建设PFI模式和用户投资建设PFI模式,分析了四种投资模式的特征、风险、优势和不足.同时,探讨了各种投资建设模式经济性比较的思路,分析了相关经济参数的选取,最后通过实际案例定量比较了各种投资建设模式的经济性,并提出了综合能源系统当前建设的实现路径.结果表明,以企业为主导的综合能源系统的投资建设模式其经济性要优于以政府和用户为主导的模式,主要在于企业拥有更加丰富的投资建设管理经验以及更低的运营成本.但是经济性最优并非是唯一的标准,在不同时期应根据政策、环境和技术的变化而采用相应的投资建设模式. 相似文献
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Guojie Zhao Gang Lu 《中国经济评论(英文版)》2005,4(10):53-55
The index of payback period of dynamic investment is an improvement on index of payback period of static investment, which is the problem that the rules to evaluate the project are feasible or not. This paper proves that rules shall be apt when using payback period of dynamic investment to evaluate the project feasibility under the condition of keeping the dynamic evaluation index to evaluate the same scheme and the consistent feasibility. 相似文献
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Joe Z. Cheng Author Vitae Author Vitae W.David Sincoskie Author Vitae 《Technological Forecasting and Social Change》2005,72(1):1-10
Global Internet traffic growth continues to create bandwidth demand in the telecommunications network. As 100 Mb/s Ethernet and Gigabit Ethernet LANs are widely installed in enterprises, the Intranet bandwidth grows quickly. With active adoption of ADSL and cable modem broadband accesses in the SOHO and residential markets, more data traffic is generated in these markets as well. Presently, most telecom carriers use synchronous optical network/synchronous digital hierarchy (SONET/SDH) equipment to “aggregate” data traffic in the metropolitan area network (MAN) before accessing the Internet backbone network. Because of the intrinsic limitations of SONET/SDH equipment in transporting data traffic, especially in terms of bandwidth scalability and provisioning efficiency, there is a need to find a broadband access solution that can overcome the drawbacks of SONET/SDH. Because the inherent simplicity of the technology, Ethernet offers cost effectiveness, ease of networking, packet-based IP friendly protocol, and rapid provisioning advantages while competing with other networking technologies. These advantages coupled with the newly developed gigabit WAN capability have well-positioned Gigabit Ethernet as a compelling technology to break the bandwidth bottleneck in the MAN environment. In this paper, we review the enhancement of Gigabit Ethernet technology and discuss the pros and cons of using Gigabit Ethernet technology in the MAN. We also address the implications of this technology evolution on telecom carriers. 相似文献
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社区商业文化价值的开发 总被引:2,自引:0,他引:2
社区商业文化产生于社区商业细致入微的服务及相对稳定的服务对象两者之间积极互动的过程。社区商业经营活动的过程就是社区商业文化形成的过程。质优价宜的商品、全面细致的服务、社区活动的参与和促销宣传活动的结合,强化了社区网点与社区居民之间的亲和关系。充分发挥社区商业文化吸引消费、引导消费的价值,必须从战略的高度对待选址、服务配套、人员配备、参与社区建设等经营管理的问题。 相似文献
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Xiang Li Guojie Zhao Qingmin Hao 《中国经济评论(英文版)》2006,5(2):57-60
Dr. D.H.Ellen puts forth the index of Equivalent Maximum Investment Period to improve the payback period index on project investment. This paper tests that it is incorrect to improve payback period with Equivalent Maximum Investment Period, and even a wrong conclusion may be resulted from the improvement. 相似文献
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Access Holidays and the Timing of Infrastructure Investment 总被引:3,自引:0,他引:3
For risky infrastructure investment, 'regulatory truncation' can diminish investment incentives. We model the truncation problem, showing the link to regulatory commitment, and derive optimal state-contingent access prices. If regulators cannot commit ex ante to specific ex post access prices then a regulatory commitment to a fixed period free of access – an access holiday – can improve investment incentives. We establish conditions under which an access holiday may improve investment timing and show how an optimal holiday depends on the underlying profit flows from the investment. In particular, we show that an optimal holiday may leave investors with positive expected economic profits. 相似文献
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使用清洁能源进行供暖,对关中地区治污减霾、改善能源结构具有积极的意义,但关于关中地区清洁能源供暖经济效益的研究鲜有报道。根据关中地区的供暖需求,论文制定了煤改电、煤改气和浅层地热能三种清洁能源供暖方案,构建了办公建筑、商业建筑和居住建筑三类典型模型,计算了这三类模型使用煤改电、煤改气和浅层地热能方案的投资、成本、净现值、内部收益率及投资回收期。浅层地热能方案净现值最大,盈利总量最大,其次为煤改电方案,最后为煤改气方案。煤改电方案内部收益率最高,煤改气方案最低,但对比差额投资内部收益率,浅层地热能供暖方案优于煤改电方案,煤改电方案优于煤改气方案。根据模型参数,评价了不同方案的污染物排放量和节能性,浅层地热能方案节能性最优,煤改电次之,煤改气较差。论文旨在为推动陕西省清洁能源事业的科学、有序发展提供理论依据。 相似文献
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《Technological Forecasting and Social Change》1998,58(3):251-269
This acticle provides fresh empirical evidence on the relevance and nature of innovation activities in the service sector. The evidence can be summarized as follows: Technological innovation is quite a diffused phenomenon in market services: more than one-third of surveyed firms have introduced technological innovations during the period 1993–95. The amount of financial resources devoted to innovation varies widely across service sectors. Financial, computing and software, engineering, and telecommunication services are the most innovative service sectors. Most service firms can distinguish between innovations in services and in processes. Process innovation emerges as the most diffused typology. Service firms rely on a wide range of innovation sources. The acquisition and development of software and investment in machinery are the most cited. Investment, R&D, and software are the major components of firms’ innovation expenditure. Major obstacles for introducing technological innovation are of an economic nature, that is, cost and risk too high. The two most important objectives of firms’ innovation strategies consist of improving service quality and reducing cost. Technological information is drawn mainly from in-house production departments as well as from outside suppliers of equipment, materials, and components. Public and private research institutions as well as patents and licenses play a very marginal role. Finally, in the near future the importance of technology for firms’ performance is expected to increase in service industries. 相似文献
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健全医院内部机制 强化全成本核算管理 总被引:1,自引:0,他引:1
随着社会医疗保险制度的实施,医疗服务市场竞争的日趋激烈,特别随着新医疗体制改革的推出,医疗服务体系得到了进一步的完善。覆盖城乡的基层医疗卫生服务网络、社区医疗机构和各类医院在内的医疗服务体系取得快速发展,迫使医院在增加创收来增加效益的同时,更加重视成本管理,建立健全内部控制机制,强化医院全成本核算管理已成为医院提高竞争实力的一个有效的手段。 相似文献