IMPACT OF FLOOD HAZARD ON RESIDENTIAL PROPERTY VALUES IN GALT (CAMBRIDGE), ONTARIO1

ABSTRACT: This study is an examination of the relationship between flooding and property values for an urban community in southwestern Ontario which has a lengthy history of flooding. As well, peoples’perceptions of the effect of flooding on property values is discussed. Analysis of sales prices and assessment data demonstrated no statistically significant differences in values of property for residences located in high- and low-risk areas either before or after a major flood in 1974. With both the high- and low-risk areas, sales prices after the 1974 flood were significantly higher than sales prices before the flood. The perceived property values followed a similar pattern. We concluded that differences in flood risk and flood experience did not adversely affect actual or perceived long-term property values.     

Satellites viewing our world: The NASA landsat and the NOAA SMS/GOES

Thousands of individuals throughout the world are now users of satellite data. Hundreds of satellites have been launched—military, navigation, communications, educational, weather, and earth resources. One of the weather satellites (the SMS/GOES) and the NASA earth resources mapping satellite (Landsat) are the subjects of this article. Data from these systems have been highly cost beneficial, not only in the United States, but in developed and developing nations all over the globe as well. There is an increasing demand both for data and for training in data use.Data samples are shown and applications are discussed. Strong reference is made to the value of the digital computer in natural and man-made features mapping and monitoring. Procedures for acquiring NASA data are explained so that the reader may order data for his home region, or for other regions throughout the world which are of interest for their agriculture, forestry, hydrology, marine resources, geology, or land use. The cost of data is incredibly low; some products cost as little as three dollars.Also discussed are the remotely based data-collection platforms that acquire ground or water data daily and relay results to the NASA Landsat or to the NOAA SMS/GOES.     

Making water policy work in the United Kingdom: A case study of practical approaches to strengthening complex,multi-tiered systems of water governance

We propose a suite of actions for strengthening water governance in contexts with complex, multi-tiered arrangements. In doing so, we focus on the collective water policies and approaches of the United Kingdom (UK), including those of devolved governments, which confront a host of serious water-related challenges—from massive flooding of urban areas and agricultural lands, to pressure on aquifers from rising water demand and drought. Further complexity in addressing these challenges has emerged in the wake of the June 2016 vote to leave the European Union (EU), so-called ‘Brexit’, and the ensuing ‘separation process’ with uncertainties for institutional and governance arrangements to follow. We make ten proposals for improving and reinvigorating water policy in complex, multi-layered situations, and comment specifically on their application in the UK setting. These are: put in place a system-wide water policy; fully embrace community-led nested river basin planning and management; fully fund river basin planning and management; re-focus the policy framing; use best-available data and information; create conversational spaces and become a more water-literate society; mobilise people; support and sustain core community networks; underpin river basin plans with regulatory provisions and effective monitoring and enforcement; and address systemic institutional amnesia. Individually and collectively, we contend that these actions will have a marked effect on transforming the planning and management of water resources. A system-wide water policy that maintains and builds on the substantive biophysical and socio-economic benefits delivered through implementation of the EU Water Framework Directive, together with the more recent Floods Directive, will galvanise stewardship of water in the UK. We urge more active engagement with and empowerment of the multiplicity of system ‘actors’, and highlight the role of non-government actors in a post-Brexit world as conduits for reaching out to and connecting directly with a wide range of water-related actors, especially across the EU. While attention to-date has focused on a plethora of specifically water-related projects, initiatives, plans and regulations, what is really needed is a systemic, long-term view of water resource management.     

应用于高温干态过滤的三聚氰胺纤维过滤材料

ＬＦＢ是Ｂａｓｏｆｉｌ纤维与Ｍｅｔｍａｘ纤维混合制成的针刺毡，本文主要介绍Ｂａｓｏｆｉｌ纤维和ＬＦＢ的物理和化学特性。     

山西省水资源综合开发利用的重点与途径

山西省是缺水的能源大省。从地表水、地下水、过境水和边界水等不同利用类型水体的开发利用 ,以及节约用水、污水净化和废水的重复利用等五个方面 ,论述了山西省水资源综合开发利用的重点与途径。     

High Environmental Cost behind Low China Price

China has won the name of the world factory being famous for exporting a great deal of and various kinds of low-price merchandise. However, most of Chinese exports are primary goods or manufactured products that create heavy pollution and require intensive use of resources. Chinese products go abroad, but their following harms stay behind. The article analyzes many obvious low-price facts in China and their concomitant terrible environmental results in detail, and points out that there are huge hidden troubles in the way of China＇s sustainable development behind her seemingly flourishing economy.     

中国县域资源组合结构的分类研究

按区域经济的发展，遵循资源分布的地域分异规律，论述了中国县域资源的地域组合结构的分类问题。首先对采用多因素综合作用、自然资源与经济资源兼容组合、资源优势、资源系统良性循环等原则进行了必要性的论证；在此基础上重点对其分类方法进行了具体说明，其主要步骤是在确定10种主要的县域资源，建立相关在指标体系的前提下，鉴于威弗组合指数对于划分县域资源组合结构类型的可行性，运用改造过的,角立县域资源地域组合结构类型的划分程序与计算方法。最后，按此分类法，把我国县域资源地域组合结构类型划分为自然资源型、自然资源主导型、自然资源与经济资源混合型、经济资源主导型、经济资源密集类等5个一级类型及其下属的8个二级类型。     

The global partnership for sustainable development

This paper examines whether foreign aid, together with other economic, social and environmental factors, contributes to sustainable development. It starts with an illustrative theoretical growth model where foreign aid promotes sustainable development by protecting the environment. Using factor analysis and newly developed estimation methods for a dynamic panel data model with endogenous regressors, the empirical section of the paper finds evidence that foreign aid has had a significantly positive influence on sustainable development in aid recipient countries. This effect is very likely to go through channels related to growth and resources as well as a technology channel with respect to energy intensity. This research has important implications for a post‐2015 development framework on international collective action with regard to a sustainable future.     

The evolution of socio-ecological systems: changing palm species management in the Colombian Amazon as an indicator of ecological and institutional change

We investigate natural resource governance in three indigenous communities in the Colombian Amazon. We base our analysis on an evolutionary governance model in which governance dimensions emerge as relevant through time. The less accessible of the communities represents earlier steps in governance evolution, while the more physically accessible is more integrated into the western scene. We observe how increased physical accessibility in a community brings in western governance models which hybridize with more traditional ones, influencing the couplings between the social and ecological systems. We zoom in on changing management of three commonly used palm species and illustrate how detailed studies of natural resource management contribute to understanding governance evolution. By comparing governance evolutions we were able to gain insights and improve our understanding on how natural resource management changes in communities transiting into western ways of living. In doing so we recognized points of rigidity and flexibility which might influence the social ecological systems capacity to adapt to changing conditions.     

PWM变频驱动电机轴电压与轴电流的测试方法

PWM变频器的广泛应用大大改善了电机调速性能,但是,由于PWM变频器共模电压在电机内部耦合电容作用下,形成轴电压和轴电流,会引起轴承早期失效危及系统安全运行。轴电流问题的研究包括对轴电流的分析、预测和抑制。然而这些过程需要轴电压和轴电流的准确测量进行验证和比对分析。设计合理而有效的测量装置和测量方法是非常重要的一环。在分析轴电流产生机理的基础上,对现有的各种轴电流测量方法和轴承阻抗特性测试方法进行介绍,总结对比这几种方法的优缺点,为轴电流的测试平台的新设计提供参考。