灾害保险在灾害防御中的作用：以江苏省自然灾害为例

本文以江苏省的自然灾害为例,阐述了灾害保险在减轻自然灾害损失中的作用,提出在经济发达地区,灾害保险应作为灾害防御对策中的重要方面。     

OPTIMUM STORAGE VOLUME OF ROOFTOP RAIN WATER HARVESTING SYSTEMS FOR DOMESTIC USE1

ABSTRACT: Major parameters and optimum storage volumes of rooftop rain water harvesting systems (RRWHSs) have not been investigated in detail in Taiwan. Accordingly, the four major parameters of RRWHSs were herein identified and elucidated using a simulation method. Because the performance of the RRWHSs is sensitive to the runoff coefficient, a field experiment was conducted to determine the runoff coefficient more precisely for various types of roofs. A simulation model including production theory was developed and employed to estimate the most cost effective combination of the roof area and the storage capacity that best supplies a specific volume of water. Consequently, the expansion path of optimum solutions for different volumetric reliability of water supply can be determined. Additionally, the method based on the marginal rate of substitution can be used for determining the rational volumetric reliability. The procedures developed herein constitute an effective tool for preliminarily estimating the most satisfactory storage capacity of any specific roof area and for determining the rational reliability of a corresponding water supply.     

城市化发展的营力系统分析--兼论我国城市化影响因子与可持续城市化战略选择

城市化是一个系统、动态和适应性的过程。受诸多因素的交互影响。城市化系统的发展运行与其所受营力作用息息相关。城市化营力系统由外营力子系统和内营力子系统相互作用。共同构成。前者含城市化的驱动力、支撑力和阻滞力。后者由压力、拉力和阻力组成。本文通过对我国城市化发展的营力系统进行分析。指出经济基础薄弱、产业驱动效率低下、资源环境约束以及城市化发展观念制度落后等。是我国当前实施城市化战略。促进经济社会可持续发展的主要障碍。在此基础上。提出我国应按照协调性、区域性和效益性原则．实施可持续城市化发展战略。     

The nexus amid foreign direct investment,urbanization, and CO2 emissions: Evidence from energy grouping along the ECOWAS community

Environment, Development and Sustainability - The vision of every country or subregions is to achieve economic growth and sustainable economic growth. Thus, the Economic Community of West African...     

灰色预测模型GM（1,1）在地面水质预测中的应用

本文将地面水质视作灰色系统,对某河段的化学耗氧量(COD),生化耗氧量(BOD_5)用灰色预测模型GM(1,1)进行建模、预测。最大误5.2％,平均误差小于0.2％,模型精度高。建模需要的数据较少,对数据的分布无特殊要求,方法和计算简单,实用价值大,是地面水质预测预报的一种有效方法。     

贵州高岭土的成分与性质研究

讨论了贵州高岭土和埃洛石粘土的产出特征、化学成分、矿物成分、铁、钛的赋存状态、热转变及工艺特性等。     

农业非点源污染研究进展

农业的非点源污染负荷量,主要受到土地利用类型、集约化程度、灌溉等多种因素的影响.本文阐述了国内外农业非点源污染现状,以及就这一问题展开大量研究的成果,并总结了农业非点源污染造成的严重后果.     

活性炭对二硫化碳和水的共吸附动力学行为的热重研究

用热重法研究了５种国产活性炭对水蒸汽和二硫化碳的吸附动力学行为，发现其动力学行为均遵循Ｂａｎｇｈａｍ方程和Ｅｌｏｖｉｃｈ方程所描述的规律，但Ｂａｎｇｈａｍ方程更为优越。     

热处理CAPP系统的应用

介绍了一种计算机辅助热处理工艺设计CAPP系统的构成和功能;举例说明了系统的工作流程及应用。