大庆油田多学科油藏研究一体化平台研制

多学科油藏研究一体化平台是基于Windows操作系统、以局域网络为传输通道、以开发数据库和精细地质研究成果为基础的多学科工作平台。本文扼要介绍了平台的研发背景、总体思路、开发环境,详细描述了数据共享、精细地质建模、精细油藏数值模拟及三维可视化的功能设计与实现方法,最后客观评价了平台的优势与不足。     

21世纪北方城市新型住宅体系的探讨

从社会经济发展角度论述了建立北方城市新型住宅体系的必要性 ,提出发展新型住宅体系 ,以适应住宅产业化要求的思路。根据社会经济可持续发展要求 ,阐明对 2 1世纪北方型城市住宅体系的基本要求 ,提出实现新体系的生产方式和推进新型体系形成的途径     

理性增长十周年回顾及展望——以美国马里兰州为例

2007年10月在美国马里兰州举办了理性增长十周年（Smart Growth@10）会议。本文在回顾马里兰州理性增长十年发展历程基础上，严格审查马里兰州理性增长运动的实践成效，具体包括理性增长在土地利用变更、社区复兴、住宅偏好及选择、耕地保护、基础设施建设等领域所取得的成就和存在的不足，并总结了未来马里兰州理性增长运动进一步完善的政策建议，希望美国马里兰州的理性增长实践能够为中国未来城市规划、发展和管理的改革创新提供借鉴和启示．     

An Examination of the Trade Study Process at NASA

Abstract:

Engineering managers increasingly rely on trade study processes to design optimum system architectures. Opinions on what constitutes a quality trade study differ, and this can hinder the engineering manager in determining what trade study processes to follow. This article contributes to the manager's body of knowledge by identifying trade study best practices through reviews of published research and interviews with engineers who conducted successful trade studies supporting the design of complex space systems.

A checklist of trade study best practices was developed. Three completed NASA trade studies were then evaluated against the checklist in conjunction with interviews of engineers involved in the studies. Through one-on-one interviews with engineers, assessments were made on the value, appropriateness, and effectiveness of each trade study. Key issues, taken from the checklist, were addressed and the lessons learned were identified. The goal of the study was to establish the groundwork for a more detailed analysis of trade study processes. The engineering manager can use these preliminary findings to ensure that their trade study processes are timely, set up properly, and contain needed checks and balances.     

Anti‐corrosion additive for concrete

The Building Research Institute in Warsaw has developed an organic concrete additive, known as Dikszopt, which is derived from tanning oak extract. Tests, mostly in the laboratory but some in application trials, show that it has a remarkable ability to protect reinforcing steel against corrosion, notably in carbonized concrete. It also appears to improve the consistency of the concrete mix and retard the setting time, as discussed in this article from the Institute.     

Housing and Urban Poverty: A Consideration of the Criteria of Affordability,Diversity and Inclusion

This paper considers recent experiences in poverty reduction within urban areas. The discussion draws out emerging lessons for the provision of affordable and inclusive housing and neighbourhood development programmes that also address the diverse needs of urban poor communities. In particular, the discussion emphasises the importance of understanding the livelihoods of the poor and the strategies that lie behind these livelihoods if external interventions are to be successful in addressing the needs of low-income urban residents.     

房屋出租管理系统的设计与实现

随着信息化建设的逐步深入，如何利用现有的计算机技术建立一套高效、灵活、功能强大的管理系统，正成为计算机专业人员关注的重要问题。信息化进程不断推进，使得其更加逐步地渗透到了普通人的生活领域。本文通过对部分房屋出租方的功能分析、需求分析．进行房屋出租管理系统的设计与实现。具体实现了房屋出租房、客户等相关信息的添加等。     

新住宅概念——谈住宅的合理性

本文从环境规划、户型规划、配套规划及系统规划四方面入手，寻求适合特定群体的适度的合理。从“太月园”和“太阳园”的开发，对“合理性”进行尝试。     

Heat losses from suspended timber floors

Heat losses through suspended timber floors and principal heat flow paths are identified. The performance of common insulates placed within and beneath the timber floors is measured in a test rig and the results reported. Special emphasis is placed on the ability to retrofit existing floors. A simple insulated radiative barrier placed under the joists is found to be as effective as 30 mm of insulation but is easier to install in existing dwellings. The reduction in heat loss using this method is 60-80%. A simple resistance model is used to predict heat loss accurately for low ventilation rates in the void below the floor. Les auteurs definissent les deperditions thermiques par les planchers suspendus en bois ainsi que les principaux cheminements des flux thermiques. On a mesure sur un montage d'essai les performances de differents systemes d'isolation poses a l'interieur et sous des planchers en bois. Les resultats obtenus ont ete enregistres. L'accent a ete mis sur les possibilites d'amelioration de planchers existants par rattrapage. Il en ressort qu'un simple obstacle radiatif isole pose sous les solives est aussi efficace qu'une isolation de 30 mm mais est plus facile a installer dans des logements existants. Cette methode permet de reduire de 60 a 80% les deperditions thermiques. Une simple resistance sert a prevoir avec precision les deperditions thermiques. pour de faibles taux de renouvellement d'air dans le vide menage sous le plancher.