现代数据中心供电系统规划设计（七）

在数据中心中,供电系统是基础设施最重要的子系统之一,文中将针对现代数据中心供电系统规划设计要求、数据中心供电系统存在的问题和设计理念的变化、数据中心供电系统方案的选择、对UPS设备性能指标的重新认识、系统模块化与模块化UPS、高频机型UPS将成为现代数据中心UPS设备的首选机型、直流输出DC--UPS系统的研究和应用前景、数据中心备用能源的配置、数据中心供电系统的节能设计、供配电系统设备的布局设计与安装等问题,分专题进行系统的介绍和讨论。     

现代数据中心供电系统规划设计（六）

在数据中心中,供电系统是基础设施最重要的子系统之一,文中将针对现代数据中心供电系统规划设计要求、数据中心供电系统存在的问题和设计理念的变化、数据中心供电系统方案的选择、对UPS设备性能指标的重新认识、系统模块化与模块化UPS、高频机型UPS将成为现代数据中心UPS设备的首选机型、直流输出DCIUPS系统的研究和应用前景、数据中心备用能源的配置、数据中心供电系统的节能设计、供配电系统设备的布局设计与安装等问题,分专题进行系统的介绍和讨论。     

盲区条件下一种基于记忆机制的移动机器人快速路径规划方法

如何在存在盲区的条件下实现机器人路径规划,是现实中的一大难点问题。本文利用路口点表征自由路径,通过估算盲区内路口点位置及其存在的概率,实现对历史感知数据的记忆与利用。建立评价函数对盲区内路口点及感知范围内的路口点进行评价,同时利用了历史感知信息与当前感知信息。与传统局部路径规划方法相比,该方法避免了盲区带来的徘徊、规划失败等问题。仿真表明了该方法的有效性。     

我国民航企业飞行员转升规划方法研究

飞行员是民航企业发展的主要保障,其转升规划具有路径复杂、升级资格影响因素多等特点,是一项复杂的工作。如何制定合理的飞行员转升规划,是目前亟待解决的问题。本文构建以费用最小为目标的非线性整数规划模型,用以描述飞行员规划问题,并将其转换为一类带约束的网络优化问题。针对问题特点设计了流量调整算法并证明了该算法的解为原问题的最优解。最后通过实例分析验证了方法的有效性。该研究为我国民航企业飞行员发展规划提供了理论依据。     

依赖公理约简的经典规划方法

 基于可满足性的规划方法通过将经典规划问题转换为一系列可满足性问题进行求解.几乎所有基于可满足性的规划编码都存在着大量的重叠公理和冗余公理,直接决定了编码理论的编码大小与求解难度.通过分析基于Graphplan的编码方式,分别提出了重叠公理的判定策略和冗余公理的删除策略.在SATPLAN2006规划系统中实现相应的编码方式并与原系统进行比较,实验结果表明:该约简方法能够在不降低规划性能的前提下有效地压缩转换理论的编码大小.通过分析基于状态的编码方式,提出了重叠公理的判定策略.重叠公理与冗余公理的约简容易实现,且并未改变知识库的结构模式,为进一步提高规划系统处理更大规模问题的能力提供了可能.     

等效圆算法在CDMA网络PN及邻区规划中的应用

本文介绍了小区覆盖等效圆模型推导和建立过程,并对小区等效圆算法在CDMA无线网络PN和邻区规划中的应用做了简要介绍。     

The pairwise flowtime network construction problem

It is required to find an optimal order of constructing the edges of a network so as to minimize the sum of the weighted connection times of relevant pairs of vertices. Construction can be performed anytime anywhere in the network, with a fixed overall construction speed. The problem is strongly NP-hard even on stars. We present polynomial algorithms for the problem on trees with a fixed number of leaves, and on general networks with a fixed number of relevant pairs.     

Multifrequency Networking Solution for TD-SCDMA

This paper introduces the characteristics of TD-SCDMA, and analyzes some networking schemes and methods of multifrequency. For the 5 MHz frequency bandwidth, a frequency planning scheme containing three frequencies is examined, and a simulation model is built to validate the performance of this scheme. Finally, this paper analyzes the advantages and disadvantages of the scheme, and proposes some directions for the future study of networking planning.     

面向5G的城域传送网规划方法及模型研究

本文面向5G城域传送网网络规划,重点针对PTN/SPN系统提出了一种网络规划方法及模型,对城域传送网网络规划有一定的参考意义。     

The 21st century corporate town: The politics of planning innovation districts

High-tech corporations have established a foothold in cities through innovation districts. Across the north Atlantic, these are typically waterfront urban renewal projects that repurpose formerly industrial land contiguous to the city centre into fully master-planned sites that also include smart city developments. Our case study focuses on the governance and spatial planning of waterfront innovation districts in Boston in the United States and Dublin in Ireland. Both cases reflect a trend to create high-value clusters attracting research and development from globalised tech firms as well as fostering local enterprise. The fluidity and mobility of multinational capital attached to the tech economy leverages digital and civic investment in these districts as a means of corporate attraction and retention: the smart city becomes one for skilled, globally-mobile tech workers adjacent to, but socially and spatially partitioned from, historically working class port communities. This process is marked by the degree to which such districts can be, firstly, disconnected from city-wide planning agendas, and secondly, the degree to which they interface and share resources and amenities with surrounding neighbourhoods. Thus, we argue, there is the potential for further market capture of urban revitalisation policies by high-tech firms, leading to the creation of ‘corporate towns’ and a new era of uneven development. The politics of urban planning can both restrict the democratic process in the city, and curtail the forms of smart city, civic technologies into those primarily beneficial for high-tech corporations and their workforce.