长期平均浓度计算软件（ISCLT）的特点及功能验证

中国沿海环境保护增强工程选择泉州市试点开展综合环境管理计划（ＩＥＭＰ），在大气环境规划的制定中，首次采用英国咨询专家推荐的长期平均浓度计算软件（ＩＳＣＬＴ），取得良好的计算效果。分析ＩＳＣＬＴ的主要特点，并通过实例验证其先进性，实用性。     

落差指数法的Matlab实现及其在大通水文站的应用

河流水位与流量的关系曲线常表现为单一或复式绳套,而对流量进行单值化处理后,则可获得与水位之间确定的函数关系,从而可以提高在受潮汐影响时推流精度,为实际工作中的水文资料整编带来可靠方法.在明确落差指数法数学原理的基础上,编写了相应的Matlab函数datong_Q.m.并且以大通水文站2008年-2012年实测的水位和流量为例,获得该段时期内的对应参数.与目前工作中采用的连时序法相比,单值化方法在结果精确的同时,还具有求解方便、计算快捷等特点,因而具有较强的实际应用价值.     

青海省生态功能区划与建设研究——以互助土族自治县为例

以青海省互助土族自治县为典型研究案例,根据互助县自然条件、地貌类型、资源状况、生态区位、主导生态系统服务功能以及社会经济发展等情况,按照地域连片、主导功能相对一致的原则,对全县进行生态功能区划,在此基础上再进行全县主体功能区划,在研究区域范围4个生态功能区及4个主体功能区合理划分的基础上,提出了促进区域生态建设的对策和建议。研究结果可为构建互助县国土生态安全格局,保护生态环境、促进当地社会经济发展以及生态文明建设提供参考和安全保障。     

陇东,陕北,晋西地区水平梯田的减灾作用

本文阐述了陇东、陕北、晋西地区坡耕地产生剧烈水土流失危害及其成因，提出了防治对策：把坡耕地修成水平梯田，可以有效地保水、保土、保肥，增强抗旱能力，对于改善当地生产条件和发展农村经济，具有战略意义。     

浅谈学术期刊编辑的建造功能

学术期刊编辑工作与其它出版物的编辑一样,要遵循具体的编辑程序。充分揭示和反映学术期刊编辑活动的规律、原则、基本特点及其功能,是从事学术期刊编辑工作的同仁始终要追求的目标。学术期刊的整个编辑活动要体现其创造性。     

Unignited High-Pressure Methane Jet Impinging a Pipe Rack: Practical Tools for Risk Assessment

Although the diffusion of its storage and transport under liquefied conditions, nowadays it is common to have methane in gaseous form in several industrial applications. This leads to safety implications to be considered: hazards are linked to both the high-pressure at which the gas is kept and to its flammability. Scenarios where flammable jets impact an obstacle are of paramount importance because of their possible occurrence. Following a numerical approach, literature shows up that their assessment can be reliably performed by means of only Computational Fluid Dynamics tools. However, despite the improvements of computing power, Computational Fluid Dynamics costs still limit its use in daily risk analysts’ activities. Therefore, considering an accidental jet-obstacle scenario of industrial interest, the present work investigates how a pipe rack can influence the development of a high-pressure methane jet. Based on a Computational Fluid Dynamics analysis, main achievements of this work are a simple criterion able to identify the situations where the pipe rack does not influence the high-pressure methane jet behavior, therefore allowing to identify the scenarios where simpler models can be used (i.e., analytical correlations known for the free jet situation), and, if present, a simple analytical relationship that roughly predicts the influence of the pipe rack without the need of performing complex Computational Fluid Dynamics simulations.     

What can we learn from benefit transfer errors? Evidence from 20 years of research on convergent validity

We develop a nonparametric approach to meta-analysis and use it to identify modeling decisions that affect benefit transfer errors. The meta-data describe the results from 31 empirical studies testing the convergent validity of benefit transfers. They evaluated numerous methodological procedures, collectively reporting 1071 transfer errors. Our meta-regressions identify several important findings, including: (1) the median absolute error is 39%; (2) function transfers outperform value transfers; (3) transfers describing environmental quantity generate lower transfer errors than transfers describing quality changes; (4) geographic site similarity is important for value transfers; (5) contingent valuation generates lower transfer errors than other valuation methods; and (6) combining data from multiple studies tends to reduce transfer errors.     

方位及冠层对厚朴果实和种子形态变异的影响

为从方位及冠层的角度探讨光照对厚朴(Magnolia officinalis)果实和种子形态变异的影响,分别从植株的不同方位和冠层采集果实、种子,并测定其形态指标。结果表明,方位对厚朴果实和种子的形态变异影响显著,不同方位厚朴果实和种子的表型性状表现为南方位和东方位优于西方位,南、东和西3个方位均优于北方位;冠层对厚朴果实和种子的形态变异影响显著,不同冠层果实和种子性状表现为中冠层优于上冠层,上冠层优于下冠层;方位和冠层对厚朴果实和种子多项形态指标的协同作用不显著。与果实相比,种子的表型性状更稳定。     

Transmission Functions and its application to the analysis of time uncertainties in Protection Engineering

In this paper we explore the concept of transmission Functions and its application to the resolution of the problem posed by the uncertainty in the time to take manual protective actions due for instance to different operator abilities. This time uncertainty is a very special kind of uncertainty with obvious relevance in Protection Engineering problems. Tackling it involves a large amount of simulations of transients associated to sequences of system transitions, resulting from those actions, where the only difference from one simulation to another is the time interval between transitions, the evolution laws being always the same. In order to solve such type of problems, a new formalism is proposed based on the concept of transmission Function. We prove that for a large class of Multiple Input–Multiple Output (MIMO) piecewise linear systems, the output may be obtained as additive contributions of each interval of the sequence, each one characterized via a Transmission Function. We then provide efficient methods to compute Transmission Functions of sequences of canonical Single Input-Single Output (SISO) piecewise systems, and to find the locus of protective action times that lead to damage (damage domain).     

基于单值中智集VIKOR的应急群体决策方法

针对在突发事件应急决策中,属性权重信息完全未知且决策信息以单值中智集形式给出的多属性群体决策问题,提出1种基于多准则妥协解排序的应急群体决策方法。利用中智熵确定属性权重,基于单值中智数模糊性测度确定专家权重,利用单值中智集加权平均算子集结群体信息;将VIKOR方法扩展到单值中智数环境下,对备选方案进行排序择优;最后,通过1个应急突发事件案例验证决策方法的可行性和有效性。