公路水泥混凝土路面基层顶面当量回弹模量非线性计算公式归一化的研究

鉴于1994年和2002年水泥混凝土路面设计规范中,基层顶面当量回弹模量确定过程存在的繁琐性,有必要通过回归分析,对2002年规范所提供的六个计算公式加以简化。实践表明,该简化能够满足计算要求并取得满意的效果。     

Estimating economic and resilience consequences of potential navigation infrastructure failures: A case study of the Monongahela River

The paper examines the potential effects of failure of heavily used, outdated locks and dams on the Monongahela River in southwestern Pennsylvania. Catastrophic failure would result in lengthy outage of barge traffic. The displaced volume of coal shipments from mines to power plants is estimated using Energy Information Administration survey data. The resilience of the impacted facilities, the viability of their shipping alternatives, and their ability to re-organize into new markets is assessed. Lost revenues are estimated for facilities that close due to an inability to adapt, as well as the replacement cost of towboats and barges trapped by a catastrophic and sudden failure. The aggregate costs to these facilities as a result of a year-long closure are estimated at $0.56-1.7 billion.     

住宅小区雨污分流改造方案研究

由于各种原因,上海市分流制排水地区目前仍然存在着不同程度的雨污混接现象,导致大量未经处理的污水直接通过雨水管网排向了周边河道水体,对河道水体造成了环境污染.城市内涝与黑臭水体治理的根本措施是控源截污,而控源截污的首要工作是全面推进雨污分流改造工作.以上海市某地区小区雨污分流改造工程为例,结合存在的雨污混接现象以及设计施工过程中遇到的问题,探讨在雨污分流改造中的技术措施.     

对构建社会主义和谐社会的再认识——基于马克思虚幻共同体和真实集体的视角

马克思恩格斯在《德意志意识形态》中提出了虚幻共同体这一概念,并对其作了详细描述。本文对虚幻共同体和真实集体这两个概念从涵义、特征等角度进行了分析,并着重论述该思想对当前我国构建社会主义和谐社会的启示。     

城市综合体公交社区规划研究——以杭州为例

基于综合体公交社区的概念与杭州市大量的城市综合体建设的实际,对公交高可达性、步行合理区、开发强度、有效的混合用地、合理交通组织及多模式交通的无缝衔接等方面进行研究,提出了综合体公交社区的规划策略,并结合具体案例进行分析;通过综合体公交社区的构建,引导土地使用和交通系统的一体化发展,减少小汽车使用,促进公交出行,提升社区品质．     

河北北部山区通村公路土基回弹模量对路面设计的影响研究

通过对河北北部山区通村公路进行现场试验,由回归分析得到土基回弹模量与弯沉的关系式,并根据不同土基强度与不同标准轴载对路面厚度设计的影响,对土基强度进行分级,可作为路面设计的依据。     

城市开发区邻里中心规划设计探析——以郎溪开发区邻里中心为例

本文以郎溪开发区邻里中心规划设计为例，分析其功能结构、动静交通、景观设计、建筑设计、户型设计等，以此探讨邻里中心规划设计理念。     

Planktonic community structure and carbon cycling in the Arabian Sea as a result of monsoonal forcing: the application of a generic model

The Arabian Sea exhibits a complex pattern of biogeochemical and ecological dynamics, which vary both seasonally and spatially. These dynamics have been studied using a one-dimensional vertical hydrodynamic model coupled to a complex ecosystem model, simulating the annual cycle at three contrasting stations. These stations are characterised by seasonally upwelling, mixed-layer-deepening and a-seasonal oligotrophic conditions, respectively, and coincide with extensively measured stations on the two JGOFS ARABESQUE cruises in 1994. The model reproduces many spatial and temporal trends in production, biomass, physical and chemical properties, both qualitatively and quantitatively and so gives insight into the main mechanisms responsible for the biogeochemical and ecological complexity. Monsoonal systems are typified by classical food web dynamics, whilst intermonsoonal and oligotrophic systems are dominated by the microbial loop. The ecosystem model (ERSEM), developed for temperate regions, is found to be applicable to the Arabian Sea system with little reparameterisation. Differences in in-situ physical forcing are sufficient to recreate contrasting eutrophic and oligotrophic systems, although the lack of lateral terms are probably the greatest source of error in the model. Physics, nutrients, light and grazing are all shown to play a role in controlling production and community structure. Small-celled phytoplanktons are predicted to be dominant and sub-surface chlorophyll maxima are robust centers of production during intermonsoon periods. Analysis of carbon fluxes indicate that physically driven outgassing of CO₂ predominates in monsoonal upwelling systems but ecological activity may significantly moderate CO₂ outgassing in the Arabian Sea interior.     

和谐社区建设的目标和形态特征

文章从和谐社区建设的意义、目标和形态特征等层面入手,对南通市和谐社区的建设问题,做了一些研究和探讨。     

做好社区心理健康教育与服务的思考

分析了目前我国社区心理健康教育与服务工作存在的主要问题,并从社会发展、医学模式转变及与国际接轨等方面分析了加强社区心理教育与服务的必要性和紧迫性,提出了提高认识,落实职责,加强宣传,建立工作网络和培训专兼结合工作队伍等方面的思路。