技术

<正>邓小平说过一句名言:科学技术是第一生产力。这句话对经济增长产生了至关重要的深远影响,也对我国的城镇化起到潜移默化的极大推动。回顾世界城市发展史,可以清晰地看到科学技术在城市发展中极端重要的作用,比如,航海技术的成熟,对欧洲国家城市的发展产生了极大推动,以哥伦布、达伽马、麦哲伦等为代表的航海家,以地理大发现为标志的经济和文化交流,使欧洲成为世界经济和文化的中心,热那亚、里斯本、塞维利亚等一批港口城市因此名噪一时。     

技术

Explosion Proof Sounder ＆ Beacon；韩国：松原携新品进军无卤阻燃产品市场；美国：航天局最新研制无人灭火机；安徽：合肥最牛“电子消防兵”走向市场；Addressable Control Panel     

技术

巴斯夫在国际绿色建筑会议展示新环保材料 巴斯夫在围际绿色建筑会议上推出新型环保型建筑型材料。NyloDeck技术是将热塑性聚氨酯硬泡以及可完全回收地毯纤维加工成环保型复合甲板。相比木质甲板,新产品将更为轻便易用,且具有防潮、防霉和防虫蛀的优良性能。     

技术

世界木材防腐处理技术新突破 近日,木材浸渍技术迎合木材处理加工的需求,以一种环保的方式将产品加工为防腐产品。这项技术由澳大利亚昆士兰州科学家发明,最近已被世界木材保管巨人Osmose公司为木材进一步发展而采用。就业经济发展和创新部门熟悉园艺和林业科学的总经理表示：这项技术若进一步发展,将会大大提升木材行业的生产效率和产业价值。据技术负责人介绍：这项技术在木材处理时不像以往一些技术那样使木材膨胀,     

技术

美国研发出新型聚能材料 研究发现SPD智能玻璃更节能 剑桥大学工程学院最近研究发现,用悬浮粒子装置（SPD）智能玻璃做成的窗户具有显著的节能效果。与常用的白玻相比,SPD智能玻璃可以阻止高达90％的太阳热能进入房间。     

技术

美国研发出新型聚能材料 美国麻省理工学院的科学家们按特殊比例,混合至少两种涂料制成一种聚能材料,以吸收各种波长的光线。在玻璃边缘安装太阳能电池后,将混合涂料涂在玻璃表面。涂料吸收太阳光后会把光线以不同波长传输到安装在玻璃边缘的太阳能电池中。     

技术

厦门：今年将推“千里眼”;郑州：雾化消防炮亮相;毕节：消防摩托车填补空白;日本：发明芥末警报器;新型燃气式灭火系统投用;山东：推广逃生门锁新技术;佛山：水上新型橡皮冲锋舟加盟;浙江：研发环保新型阻燃蜂窝墙体材料;“微型应急指挥平台”近问世;丹东：研制卫星消防水源图系统;     

技术

六开盖出一座宾馆,美研制出“绿色水泥”,“超细电子级玻璃纤维”取得突破,法国新型石材切割术获专利,高性能自洁漆行业新宠     

技术

手机控“智能家居报警系统”上海问世;墨西哥自主研发应急消防车;中国自主研发新型阻燃剂;北京研发奥运史上首套全数字救援预案;葫芦岛消防成功研制灭火救援专利器材……     

技术

Delta助力鞍山市奥体中心节能建设 Delta成功为全运会主体育场“鞍山市奥体中心”提供楼宇自控系统和服务,助力实现优化设备运行,降低能耗和运营成本。 在该项目中,Delta针对不同场馆的功能和需求,为不同场馆提供了有针对性的解决方案。     

日本集合住宅及老人居住设施设计新动向

本文对日本的集合住宅和老人居住设施的设计新动向分别进行了介绍。前者主要包括：在户型设计上求新求变以适应多样化的居住需求，在结构形式上追求广义的耐久性以适应人生不同阶段的居住需求；在居住心理环境设计上，从单纯注重私密性转向适度开放以促进邻里之间的交流和社区的自然形成；使住宅空间向立体化方向发展。后者主要包括：使老人居住设施与地区的特性更好地结合，使其有家的感觉；为老人创造 出有利于保持自立和尊严的个性化空间；促进设施规模的小型化；注意公共空间与个人空间之间的连接；将设施对外开放以促进与外部的交流；创造多样化的休憩场所，加强空间之间的有机联系等等。     

How to redesign a rent rebate system? Experience in the Netherlands

In 2006, responsibility for implementing the Dutch housing allowance system was transferred from the Ministry of Housing to the Tax Authority. It has since been renamed, and is now known as the ‘rent rebate system’. A number of dilemmas have become evident since the 2006 changes. Attention has shifted to how to implement the system effectively: how to limit the overconsumption of housing services, how to avoid moral hazard, how to reduce outright fraud, how to reduce the poverty trap, and how to prevent the escalation of public spending. These new dilemmas have led to the central research question in this article: how to redesign a system of rent rebates? The discussion of these dilemmas points to further changes. Proposals for a redesign of the rent rebate system in the Netherlands are presented. These proposals could also be relevant for other countries.     

基于ADINA的深基坑土钉支护在正常及地震作用下的弹塑性三维有限元分析

应用非线性有限元软件ADINA对土钉支护的变形性能进行分析,阐述了土钉支护有限元数值模拟的特点和作用机理,考虑了土体的弹塑性特性、土钉与土体的相互作用以及分步施工过程,并结合具体工程实例进行了数值模拟.结果表明,土钉在土钉墙复合土体中具有分担作用、应力传递与扩散作用、变形的约束作用;同时模拟了土钉墙在地震荷载作用下的反应加速度、实时动位移,探讨了土钉墙产生滑移、沉降及倾斜的原因.分析结果既为工程设计施工提供了可靠数据,也验证了ADINA软件在土工分析方面的优势.     

Modeling Sorption Transport In Rooms And Sorption Filtration Systems For Building Air Quality Analysis

Adsorption, desorption and chemisorption are known to impact the dispersal of volatile organic and chemically reactive compounds in buildings. These same three processes may be used to advantage to control the levels of these compounds indoors using building sorption filtration devices. To add to the understanding of these processes, to provide the means to predict the impact of these processes on human exposure and to provide the tools needed to design gaseous filtration systems to mitigate the exposure to these compounds, a general approach to modeling the dynamics of these processes is presented. Equations are presented to account for the elemental advection, diffusion, sorption, and chemical transport steps affecting single component sorption dynamics in rooms and sorption filtration systems. These element equations are based on general principles and formulated in terms of fundamental physical parameters that may be determined using standard procedures. Models to predict room and sorption filtration system dynamics are formulated using assemblages of these element equations and a series of simplified models of these systems are derived. Initial applications to model single-component sorption transport in rooms and sorption filtration systems indicate that the approach has the potential to provide accurate predictions providing the sorption and chemical characteristics of the sorbate-sorbent system being considered are well-characterized. This potential is, however, compromised by the lack (or present uncertainty) of fundamental data relating to sorption equilibrium, porous diffusion, surface chemistry, and boundary layer mass transport     

Uplift of elastomeric bearings in isolated bridges subjected to longitudinal seismic excitations

Bearings are used to isolate bridge substructures from the lateral forces induced by creep, shrinkage and seismic displacements. They are set in one or two support lines parallel to the transverse axis of the pier cap and are typically anchored to the deck and to the pier cap. This detailing makes them susceptible to possible tensile loading. During an earthquake, the longitudinal displacements of the deck induce rotations to the pier caps about a transverse axis, which in turn cause tensile (uplift) and compressive displacements to the bearings. Tensile displacements of bearings, due to the pier rotations, have not been addressed before and questions about the severity of this uplift effect arise, because tensile loading of bearings is strongly related to elastomer cavitation and ruptures. An extended parametric study revealed that bearing uplift may occur in isolated bridges, while uplift effect is more critical for the bearings on shorter piers. Tensile displacements of bearings were found to be significantly increased when the isolators were eccentrically placed with respect to the axis of the pier and when flexible isolators were used for the isolation of the bridge. The results of this study cannot be generalised as bridge response is strongly case-dependent and the approach has limitations, which are related to the modelling approach and to the fact that emphasis was placed on the longitudinal response of bridges.     

A simplified model for estimating population-scale energy impacts of building envelope air tightening and mechanical ventilation retrofits

Changing the air exchange rate of a home affects the annual thermal conditioning energy. Large-scale changes to air exchange rates of the housing stock can significantly alter the residential sector's energy consumption. However, the complexity of existing residential energy models is a barrier to the accurate quantification of the impact of policy changes on a state or national level. The Incremental Ventilation Energy (IVE) model introduced here combines the output of simple air exchange models with a limited set of housing characteristics to estimate the associated change in energy demand of homes. The IVE model was designed specifically to enable modellers to use existing databases of housing characteristics to determine the impact of ventilation policy change on a population scale. The IVE model estimates of energy change when applied to US homes with limited parameterization are shown to be comparable to the estimates of a well-validated, complex residential energy model.     

心理解析性教学在工程实践课程中的佳效

文章针对大学本科实践课程AutoCAD教学中出现的具体难题,细致地解析了学生的心理,积极地采取心理战术缓解学生的压力,令其克服自卑的心理,使其保守良好的心理,激发其学习的兴趣;并努力创造学生达成学习目标的条件和环境,培养学生勇于实践的能力和团队合作的精神。经过三年的实践,取得了较好的教学效果,得出结论：优化课堂教学,教者首先应仔细观察与揣测学生的心理。     

基于节理产状不确定性的边坡稳定性及敏感度分析

用Monte Carlo法对服从Fisher分布的节理产状进行模拟,计算每个模拟产状的安全系数,并统计拟合安全系数的分布规律及边坡的可靠度。为同时考虑安全系数对节理倾角和倾向的敏感度,提出了以安全系数对节理面法向矢量球面距离的敏感度来反映其对产状敏感度的分析方法,并建议用平均值和最大值两个指标来反映任意产状的敏感度。用赤平投影方法在赤平图上绘制安全系数等值线图和敏感度等值线图,实现了计算结果的可视化展示。算例分析表明：此方法实现了对节理产状不确定性的全面直观分析,消除了产状测量数据离散化可能造成的安全隐患,解决了以往产状敏感度分析中需单独对倾角或倾向分析的不足。     

常低温下EGSB处理生活污水的影响因素研究

在15～26℃的常低温条件下,采用EGSB处理生活污水,考察了进水流量、回流比、液体上升流速(Vup)、温度等因素对运行效果的影响。结果表明,当温度为26℃左右时,对于9～11 L/h的低进水流量,宜采用高回流比(1.6～2.5),对COD的去除率最高可达90%;对于15～24L/h的高进水流量,宜采用低回流比(0～0.6),对COD的去除率最高可达84%;当进水流量提高至30 L/h时,不宜回流,对COD的去除率降至77%;当进水流量分别为9、11、15、24、30 L/h时,最佳Vup分别为4.0、(3.1～3.6)、(2.7～3.4)、3.0和3.8 m/h,此时对COD的去除率分别高达90%、(87%～89%)、(83%～84%)、83%和77%;在无回流的条件下,适宜的进水流量为15～24 L/h,相应的HRT为0.5～0.8 h。当温度为15～26℃时,EGSB适宜的运行条件是高进水流量(15～24L/h)、高Vup(3.0 m/h)和低回流比(0～0.6),此时对COD的去除率高达81.9%以上。     

关于项目代建方工作职责的思考

根据代建制的内涵,在代建实践工作中的认识,分析了建设项目前期、设计、施工各阶段的主要工作职责,即设计方案及图纸优化,创造和谐的工作氛围,做好参建各方之间的协调工作,加强合同管理,监督各方切实履行各自职责,严格控制工程质量、投资、进度,竣工验收后移交使用方。