北京西郊继园

继园又名三贝子花园，是清代北京西郊的一座大型私家园林，其旧址在今北京动物园内，当年曾经是游人如织的游览胜地。其中引御河之水入园，形成丰富的水景和分散曲折的岛屿，周围以连绵的土山环绕，随地形起伏布置形态丰富的长廊、亭榭，叠石、藤花点缀其间，水中密植莲花，陆地种植了大量的柳、槐、榆等高大树木，景致十分优美，并富有自然野趣。通过文献考证和遗址调研，对继园的历史沿革、基本布局以及造园手法进行了探讨。     

北京私家园林的建筑艺术

北京私家园林中建筑占据了重要的地位,其中拥有厅堂斋馆亭榭轩楼台等不同形式,以及模仿江南的画舫,此外还经常设置戏楼和各种祭祀性建筑,并且拥有多种样式的门、廊、桥、墙等设施。这些建筑均采用典型的北方官式做法,用料考究,造型端庄,色彩相对浓烈,与山水花木景观很好地结合在一起,体现出与南方园林迥异的特色。结合大量具体实例,对北京私家园林的各类型建筑的基本特点进行分析,并对其整体的风格特征作了探讨和总结。     

Using genetic algorithms and linear regression analysis for private housing demand forecast

An accurate prediction of prospective construction supply and demand, especially the private residential market, is paramount important to policy makers, as it could help formulate strategies to cultivate/stabilize the economy and satisfy the social needs (at macro level). Despite that, a realistic prediction of future private residential demand is never an easy task, as it is governed by a number of social and economic factors. In this paper, four leading indicator models are developed and compared for directly forecasting Hong Kong private sector residential demand. These comprise a (i) Linear Regression Analysis (LRA) model, (ii) Genetic Algorithms (GA) model, (iii) GA-LRA model, where LRA is used to select the indicator variables; and (iv) GA-LRA model with Adaptive Mutation Rate (AMR) to reduce the likelihood of local optima. The findings indicate that the GA-LRA model with AMR provides the most accurate forecasts and over a longer time horizon. In providing a range of possible forecasts, the model also provides an opportunity for the decision-maker to exercise judgment in selecting the most appropriate forecasts.     

运营商私有云的DaaS构建方案初探

从分析运营商私有云中DaaS需提供的功能入手,详细介绍了DaaS的架构设计、部署方案,最后给出了DaaS的具体流程和组件设计。     

VPN技术在电力系统中的应用

分析了目前变电站在不具备光缆通道的情况下,各种联网技术的优劣。文章简要介绍了宝鸡供电局采用VPN ADSL技术在变电站联网中的应用情况,详细介绍了方案的设计原则、设备的选型,描述了方案实施后的效果。指出了使用VPN ADSL技术在变电站联网应用的优缺点,为同行面临类似情况提供了一种有效的解决方案。     

利用VPN技术解决电力企业的信息传输

为了解决电力企业快速发展而造成的信息传输瓶颈和通信成本的大幅攀升,迫切需要一种高安全、高性能、高稳定性、低开销的信息传输解决方案。利用VPN技术在公用网络中建立一个虚拟的专用数据通信网络,则能实现企业局域网在公网中的扩展,使企业的远程用户或者分支机构同内部网络之间建立低成本、可信的安全连接。文章介绍了VPN技术及其在电力企业中的应用。     

VPN专网在GPRS配变监测系统通信中的应用

研究了GPRS的无线通信传输网络和VPN的隧道传输技术，提出了一种以GPRS VPN作为通信传输通道的配变监测系统的设计，实际应用证明用这种通道设计的配变监测终端在数据传输方面更加安全可靠。     

横编机技术创新研究评述

近10年来中国电脑横编机制造业取得了飞速发展,主要动因在于：民营制造业的投入、市场需求的刺激、技术创新水平的提高及劳动力成本的上升。然而在发展中存在不少隐患与忧虑,例如：缺乏理论与原创性技术、市场的恶性竞争已显露端倪、制造工艺水平不高等。对此,在调查研究的基础上提出了4点应对策略,供业界参考。     

Social Assistance Recipients and Tenancy Conditions in the Private Rental Market

The proportion of public housing is very low in Norway. Low-income groups must therefore enter the private rental market in order to rent a dwelling. This paper focuses on tenancy conditions in the private rental market in two cities, Oslo and Trondheim, for recipients of social assistance. The analysis offers valuable insight into overall differences between social assistance recipients and other tenants. In particular, it is demonstrated that recipients of social assistance are predominantly found in the most expensive segment of the private rental market. However, within this segment the analysis is not conclusive with respect to differences in rental fees. Furthermore, in Oslo the tenancy conditions of social assistance recipients differ somewhat from the general rental market in that short-term contracts are used more often while this is not the case in Trondheim. In Oslo private landlords generally have information that the tenants receive social assistance, while they generally do not have such information in Trondheim.