环境评估系统的知识库设计研究

运用宏代换技术实现代数式的数据化,设计镜像数组实现代数式中变量的数据库定位,从而虚拟了代数式数据类型,该数据类型具有动态性,使知识表示的粒度细化到了数据层面,由此,设计了基于关系数据库的完全数据化的知识库,系统具有更高的智能化水平。

环境保护下的环境影响评估系统建设

在我国的环境保护事业中,环境影响评估是一项非常重要的内容,建设有效的环境影响评估系统才能够对建设项目的环境影响进行准确评估。本文主要围绕环境保护下的环境影响评估系统建设来进行阐述,首先阐述了环境影响评估的重要作用和特点,然后分析了环境保护下的环境影响评估系统建设的具体内容和方法,旨在为人们提供重要的参考。

环境友好高新技术材料(上)

一、引言 在资源匮乏、能源短缺、环境问题日益严重的现代社会,人类对于可持续发展的要求越来越迫切,对自己的社会经济行为,尤其是工业生产提出了更高的责任要求.材料工业是人类社会与经济发展的基础,然而在材料的生产、制备、使用及废弃的过程中,消耗了大量的能源与资源,同时也造成了环境的恶化.生态环境材料的出现与发展,不仅是材料本身发展的需求,而是从整个地球环境、社会发展、人类生存出发,对材料产业提出的要求,对于一个区域、国家乃至地球、人类环境安全至关重要.

Construction and application of an assessment index system for evalu ating the eco-community’s sustainability

An assessment index system including environment, socio-culture, economy and technology was established for evaluating environmental construction level of community （objective construction）, and questionnaire was designed according to paper review for evaluating residential satisfaction （subjective satisfaction）. The index system was divided into four layers： system （A）, subsystems （B）, categories （C）, and indicators （D）, and in total of 38 indicators was established. The Xihe community, affiliated to Nanfen district, Benxi City, Liaoning Province, China was selected as a case study. Results indicated that the community sustainability index related to objective environmental construction was 0.4355 and was classified as class Ⅲ （moderate）; the community sustainability index related to the residential satisfaction was 0.4255, belonging to class Ⅲ. In conclusion, the sustainability of Xihe community was moderate and needed to be improved. Residential satisfaction was lower than objective environmental construction. The assessment index system established in this study is able to reflect the comprehensive sustainability of community and can be used to evaluate other similar communities＇ sustainability.

Residential environment index system and evaluation model established by subjective and objective methods

In this research, the residential environment index system and evaluation model were established by means of subjective and objective methods. The methodology for establishing the evaluation system for residential environment was first analyzed; then the subjective evaluation data-base was established by questionnaire survey; and at the same time, the objective evaluation data-base was constructed by Geographic Information System (GIS); and then the related equation system between subjective and objective system was developed by multiple regression analysis. This research could benefit evaluation of the residential environment quality for various purposes, and also provide important rudimentary data-base for the development and improvement of residential environment for officials. Furthermore, the index system and evaluation model established in this research could construct a strong relation between subjective evaluation and objective data; and thus could provide a comprehensive, efficient and effective methodology for the evaluation of residential environment.

An evaluation system for suitability of urban public rental housing construction in Chongqing

A social problem that low-income people are unable to purchase houses in urban areas has been focused in recent years and the housing security system has also become an important part of the social security system. In recent years, public rental houses appeared as a new type of affordable houses. The national government took the construction of public rental houses to the national strategic level. Currently, there are many problems in the public rental house construction. For example, policy mechanisms are inadequate, the use of funding is not in an efficient way, the location of public rental houses is far away from the downtown, the plot ratio is too high, and facilities are incomplete. There are no appropriate indicators to comprehensively evaluate the public rental house construction. Based on the livable evaluation system in Chongqing, we selected four aspects of relevant indicators as the economic suitability, environmental suitability, social suitability, and life suitability to establish the public rental house construction suitability evaluation system.

Computer support system for residential environment evaluation for citizen participation

Though the method of citizen participation in urban planning is quite well established, for a specific segment of residential environment, however, existing participation system has not coped adequately with the issue. The specific residential environment has detailed aspects that need positive and high level involvement of the citizens in participating in all stages and every field of the plan. One of the best and systematic methods to obtain a more involved citizen is through a citizen workshop. To get a more “educated” citizen who participates in the workshop, a special session to inform the citizen on what was previously gathered through a survey was revealed to be prerequisite before the workshop. The computer support system is one of the best tools for this purpose. This paper describes the development of the computer support system for residential environment evaluation system, which is an essential tool to give more information to the citizens before their participation in public workshop. The significant contribution of this paper is the educational system framework involved in the workshop on the public participation system through computer support, especially for residential environment. The framework, development and application of the computer support system are described. The application of a workshop on the computer support system was commented on as very valuable and helpful by the audience as it resulted in greater benefit to have wider range of participation, and deeper level of citizen understanding.

Developing a Building Environmental Assessment System for Slovakia

In the previous time the requirements of environmental safety, suitability and responsibility of buildings have increased. The criteria of sustainability are included in building environmental assessment systems and tools used in different countries. The aim of building environmental assessment is a sustainable building design, which demands the cooperation among civil engineers, architects, environmentalists and other experts from different areas of building environmental assessment. The existing systems and tools were the basis of the new system development available in Slovak conditions. The purpose of this paper is to introduce the building environmental assessment system （BEAS） which was developed in Slovakia. Significant models used world wide in relation to environmental assessment of buildings, were compared on the basis of their covered. The summary of sustainable building assessment systems will be presented in this paper. Developing a building environmental assessment system for Slovakia is also introduced in the paper.

Energy performance assessment on central air-conditioning system of commercial building: A case study in China

Energy performance assessment on central air-conditioning system is essential to optimize operating, reduce operating costs, improve indoor environmental quality, and determine whether the retrofitting of the equipment is necessary. But it is difficult to evaluate it reasonably and comprehensively due to its complexity. A "holistic" approach was discussed to evaluate the energy performance of central air-conditioning system for an extra-large commercial building in a subtropical city. All procedures were described in detail, including field investigation method, field measurement instruments, data processing and data analyzing. The main factors affecting energy consumption of air-conditioning system were analyzed and the annual cooling-energy use intensity of this building was calculated and also compared with other shopping malls and other types of buildings in Guangzhou. And COP(coefficient of performance) of chiller, water transfer factor of chilled water system and cooling water system were taken into consideration. At last, the thermal comfort and indoor air quality issues were addressed. The results show that the chilled water pumps are over-sized and the indoor environmental quality should be improved. The purpose of this work is to provide reference for energy performance assessment method for air-conditioning system.

An evaluation of a perfluoromethylcyclohexane(PMCH) permeation plug release vessel(PPRV) in a controlled turbulent environment

The use of sulfur hexafiuoride （SF6） as a tracer gas for analyzing underground mine ventilation systems has been practiced for over 30 years. As a result, the methods used to release, sample, and analyze SF6 are well accepted. As the complexity and size of underground mine ventilation networks increase, the ability of a SF6 to function as a convenient and rapid means of analysis diminishes. The utilization of multiple tracer gases can mitigate this by removing the need to purge the background presence of a tracer before conducting another release and allowing for a more comprehensive evaluation using multi-zone tech- niques. Recent studies have identified perfluoromethylcyclohexane （PMCH） as a possible supplement for SF6 in underground mine ventilation tracer studies. However, the deployment of PMCH remains a challenge because of this compounds physical properties. This paper evaluates a PMCH permeation plug release vessel （PPRV） under controlled turbulent conditions. The details of the experimental parameters used in the evaluation as well as a discussion regarding the performance of the PPRV are included.

Information Technology in Environmental Monitoring for Territorial System Ecological Assessment

The environmental monitoring dataset of Rivne region territory （Ukraine） was analyzed using remote sensing technology and statistical analysis. The article reveals approaches to anthropogenic impact specificity assessment based on methods of correlation analysis. The information technology to assess soil quality based on satellite images decoding was created.

Environmental Flow Assessment of Great Ruaha River in Southwestern Part of Tanzania

Environmental Flow Assessments （EFAs） are becoming the global standard for determining the amount of water required to sustain aquatic ecosystems and sustain socio-economic development. EFAs comprise structured, science-based approaches to determine how much water must be left in the river to protect the aquatic ecosystems and achieve the desired ecological state, The building block methodology （BBM） that was used in this study is designed to identify a series of important flows （the building blocks） which will together provide the essential aspects of the natural hydrological regime that ensure the persistence of as much of the biodiversity as possible. The results show that a total inflow into eastern wetland of 5.52-6.81 m^3/s is required in order to sustain an outflow of 1-2 m^3/s past Ng＇iriama and hence meet the ＂minimum＂ recommended flow rates further downstream at BBM1 and BBM2 during the drought low flow conditions. The rationale being that a satisfactory flow during drought low flow conditions will guarantee sufficient flows during low flow periods in normal and wet years. The low flows of 2.5 m^3/s and 19 m^3/s are recommended for the driest and wettest months, respectively.

LEED-ND与CASBEE-City绿色生态城区指标体系对比研究

随着全社会对于生态文明的重视程度的提升,绿色生态城市的建设也受到了前所未有的关注。但是,目前我国尚无统一的指标体系来评价一个城区的绿色生态水平。本文在对全球两个最具代表性的绿色社区/城市的评价体系进行详细的对比研究的基础上,结合我国绿色生态城区建设状况,对我国制定绿色生态城区指标体系提出了有益的建议。