陕南移民搬迁与后续增收途径响应研究

同传统的推拉理论引起的移民相比,陕南脱贫攻坚移民具有政府行为的特点,它将自然演进中形成的劳动者与分散耕地相匹配格局打破,出现了劳动者与土地分离的局面,可能造成搬迁后生计不可持续问题。因此,探讨移民搬迁后续增收途径对于促进移民“稳得住”具有十分重要的理论与现实意义。抽取陕南汉中、安康、商洛3市9县584户搬迁家庭作为样本进行实地问卷调查及访谈,通过对调研数据分析发现：（1）搬迁距离对农户生活质量及收入方式产生影响,搬迁距离在2 km以内为适宜距离,社区规模在500户以下,农户最为满意;（2）搬迁距离会引起农户收入方式的转变,搬迁距离越远,农户无法继续使用原有土地等生产生活资料,农业生产发展缓慢,农技水平也相对滞后,使得农户务农收入减少,收入方式向务工转变;（3）就近安置、提升移民人力资本、兴办安置地产业等举措是解决移民户收入来源的可选途径。     

森林防火性能化设计方法

根据消防工程、森林防火的原理和方法，参照建筑防火性能化设计方法，结合我国的森林防火现状，提出了森林防火性能化设计方法。将性能化设计理念融人到森林防火设计中有利于提高我国的林火管理水平。     

液化石油气储罐设置方式之初探

从能量释放的角度出发,以爆炸理论为基础,研究了液化石油气储罐不同设置方式下发生爆炸的影响范围,并根据储罐三种设置方式的特点,给出了液化石油气储罐的合理设置方案.     

西北地区水资源态势及可持续发展途径分析

对我国西北地区水资源的现状进行了概述,阐述了在水资源利用中存在的各种问题,如水土流失严重、河道断流、水质污染严重、农用灌溉水大量浪费,等等.并从自然、人为两方面因素进行了原因分析.在此基础上,对西北地区水资源的可持续发展途径进行了探讨.     

有机酸对云凝结核形成的影响

对流层中的有机酸主要来源于人类活动和自然的排放，它们对云成核现象有重要作用并且对云凝结核(CCN)的数量有显著的贡献，但具体哪些种类的有机酸起着什么样的作用以及有多大的作用却鲜为人知。为此，本文结合国内外在相关领域的研究成果，概要介绍了对流层中有机酸(主要是甲酸，乙酸，丙酮酸，草酸)的含量、来源、存在形态及其对云凝结核影响。     

干旱区绿洲生态环境建设之途径--以新疆阿克苏绿洲为例

本文以干旱区绿洲的特定地域条件和干旱区绿洲的表现特征为对象，介绍了处于塔克拉玛干沙漠北缘的阿克苏绿洲的状况，对干旱区绿洲的共性及存在的主要环境问题做了分析阐述。认为在实施西部大开发战略中，扩大绿洲面积、加快生态环境建设力度；建立生态环境补偿机制，动用政策、经济、技术的手段；合理调配绿洲种植结构，全面推广节水农业；提高水土资源合理开发利用与有效保护。这些途径将有助于绿洲生态环境的改善。     

Gas explosion experiments in 1:33 and 1:5 scale offshore separator and compressor modules using stoichiometric homogeneous fuel/air clouds

An experimental investigation of flame and pressure development inside scaled-down versions of realistic offshore modules is reported. Two different scales, 1:33 and 1:5 and two different internal layouts, separator and compressor were tested. The effects of pressure build-up in homogeneous, stoichiometric In addition, the size and the distribution of the vent area of the modules were varied. The length, width and height of the 1:5 scale module were 8 m, The smallest pressures, 10–20 mbar were found for the cases with the largest vent area. Generally, pressures in 1:5 scale were 5–10 times larger th     

Calculating concentration contour co-ordinates using integral plume models

A mathematical model is proposed which allows the prediction of the contour, for a given concentration, of a plume caused by a release into the atmosphere of substances either heavier or lighter than air. The application of the model to different cases has given results close to those obtained from other models. Its introduction into the computer code of any dispersion model provides a tool useful in risk analysis and environmental assessment.     

Predicting Active and Effective Agents for Safety Test of the Actively Caring Approach

Recruiting intervention agents is a promising procedure to increase the reach of community-safety programs. Finding active and effective agents, however, has not always been a systematic process. One recent approach named Actively Caring (AC) hypothesizes that self-esteem, belongingness, empowerment, extroversion, and reactance constructs predict willingness to help others. This approach was tested as a mechanism for finding successful agents. Urban college students (N = 360) were asked to (a) complete a survey of AC measures and (b) volunteer to promote fire safety to others by distributing commitment cards requesting fire-safe behaviors. In all, participating volunteers (N = 107) motivated commitments from 278 households. These households represented many communities of the urban area, giving evidence that college students may be useful resources for promoting safe behaviors. However, the AC approach was not as effective as selected individual psychosocial and demographic variables in predicting active and effective agent behaviors. Implications for the AC approach, and other prosocial behavior models, for selecting intervention agents a priori are discussed.     

海平面上升适应性战略多目标评价

通过对区域自然地理特征描述、人类开发利用活动的调查统计和社会经济发展资料的分析研究,根据评价目标的重要程度和所选战略对评价目标影响程度不同,构造战略目标矩阵,即对所选择的系列海平面上升适应性战略方案通过对各种目标的适应程度计算进行优化、排序,为决策者选择战略提供优先级,为海平面上升风险区提供相对理想的适应性战略方案。