天然气管道工程技术发展水平及推广应用

介绍了国内外天然气管道工碍技术发展水平，针对我国天然气管网建设的实际，提出了天然气管网系统分析、数字化管道、自动焊、全自动超声波检测、干空气管道干燥、新管道智能检测等6项值得推广应用的新技术。     

利用管道模拟软件提升技术管理水平

通过分析管道模拟软件的特点、功能和应用,并结合目前天然气长输管道运营模式中存在的问题,阐述了引入天然气管道模拟软件对于提升技术管理水平的重要性和必要性.     

石油、石化企业综合利用煤、油、气资源途径初探

近年来我国原油进口数量急剧增加。石油安全问题引起广泛关注。而我国煤炭与天然气资源相对比较丰富。统筹规划并合理利用煤、油、气资源，通过煤化工、石油炼制、石油化工3个行业技术上的互相借鉴，资源上的互相替代，产业链的互相补充，尽量减少石油的消耗，以减轻对进口原油的依赖。     

Managing and financing metropolitan public services in China: experience of the Pearl River Delta region

Under China’s current fiscal policies and inter-governmental relations, it is a significant challenge to finance and deliver public services across jurisdictions. This challenge was met in the Pearl River Delta region in southern China with a collaborative governance approach. Directives from higher-level governments and horizontal inter-city fiscal arrangements were successfully combined to deliver public services. Effective networks should be developed to improve co-ordination and collaboration in delivering cross-jurisdictional public services.     

天然气管线冲刷破损失效分析

某燃气公司一段埋地高压天然气输送管线某处发生严重破损，为分析失效原因，作者采用宏观形貌分析、扫描电镜分析、化学成分分析、显微组织分析、力学性能检验、Fluent模拟分析等系列方法对该失效管段进行分析。结果表明，与该天然气管近距离平行铺设的自来水供水管道破裂，导致高速水流正面与切向冲刷作用，最终导致天然气管破裂。根据分析结论，提出了预防同类事故发生的建议。     

黔东南地区人居环境评价及优化策略研究

文章以黔东南地区为例主要针对城镇化水平下人居环境的发展模式及优化策略展开研究。首先建立了AHP模型,按照指标体系构建原则,构建了适合评价黔东南地区宜居性的科学合理的客观评价指标体系,以经济建设、居住环境、生态环境、公共服务等4个方面作为影响因子,用层次分析法得出综合权重以及各个指标所占的权重,根据得分分析影响黔东南地区宜居性的指标,其中影响黔东南地区宜居性的因素主要是经济建设和居住条件,其次是生态环境和公共服务,根据数据分析得出黔东南地区目前存在经济、社会、环境协调系数不高、城镇化水平偏低、自然资源丰富的现状。根据数据分析和从黔东南地区的实际情况提出强化城市基础设施;保护生态环境,合理利用资源;继承历史,构造文化底蕴;加强治安力度,提升宜居性等4种优化策略。     

“This is a holy place of Ama Jomo”: buen vivir,indigenous voices and ecotourism development in a protected area of Bhutan

Common definitions of ecotourism address the need to benefit the well-being of local people; in reality, ecotourism is often supported or dominated by external agents. Local ideological, social and cultural values may be overlooked, thereby disenfranchising local and indigenous stakeholders. This paper examines indigenous perceptions of ecotourism and well-being, and how they relate to ecotourism practices in three Brokpa communities of the first protected area in Bhutan to become a special tourism destination. A range of methods (e.g. semi-structured interviews, participatory mapping) was used and data analysis was couched in the context of buen vivir (living well), an indigenous concept of well-being. Findings indicate that: (1) perceptions of ecotourism vary between community members and contrast with the official park definition; (2) well-being is conceived in diverse ways but corresponds to key features of buen vivir; (3) indigenous worldviews are pervasive, and shape social values and spiritual beliefs in connection to nature; and (4) indigenous cosmologies and traditional values may be strengthened through their integration into modern policies and institutions. This research contributes more non-Western voices to the literature, a concept and mode of analysis for well-being that embraces an indigenous ontology, and empirical insights on indigenous communities in protected areas.     

Assessing recreation carrying capacity of the environment attributes based on visitors’ willingness to pay

Recreation carrying capacity (RCC) is one of the most important indictors used in measuring the usage limits for the forest park resources. However, the consensus has not been reached with respect to the RCC’s content and its measuring metrics. In this paper, we attempt to establish a new RCC theoretical framework based on the demand theory of the tourism product characteristics. In the process, the choice experiment and orthogonal design methods are used in questionnaire designs and the conditional Logit model is used for parameter estimates. More than 700 park visitors are surveyed for data collection at the Shenyang National Forest park of Liaoning province in China. The primary park attributes being considered encompass vegetation, coverage, water quality, number of rubbish on the park trail path, admission fees, and congestion. The carrying capacity threshold for each specific attribute is identified.     

基于Logistic模型的东北地区粮食生产能力影响因素研究——以宾县为例

[目的]粮食生产能力关系到粮食供给和国家粮食安全,如何提高粮食生产能力是我国亟待解决的问题。文章以宾县为例,通过一定的方法探索粮食生产能力的影响机制,最终提出提高粮食生产能力的合理建议。[方法]利用农户调查数据,借助Logistic模型探讨自然因素和社会经济因素对粮食生产能力的影响特点。[结果](1)品种技术推广、作物收益对粮食生产能力的影响效应在1%水平上达到显著;(2)生育期变化、土地质量、旱灾、耕作方式对粮食生产能力的影响效应在5%水平上达到显著;(3)温度、降水、冷害及农业生产资料投入对粮食生产能力的影响效应在10%水平上达到显著;(4)温度与降水是否集中在生育期内、出售情况、农业引导政策对粮食生产能力的影响不显著。[结论]针对研究结果,该文提出,可从预防低温冷害、健全水利设施、完善耕地保护制度及加强农业基础设施建设等方面提高粮食生产能力。     

新兴产业对经济发展的时变性影响——来自京津冀地区的经验分析

本文建立了带有随机波动率的时变参数向量自回归模型（SV-TVP-VAR），以京津冀地区为研究对象，分析了不同时期新兴产业发展对地区生产总值、财政收入以及就业的影响。研究结果发现：（1）新常态时期新兴产业的发展对京津冀经济状况的影响程度大于在全球经济危机时期和经济高速发展时期的影响程度，但在大部分时期新兴产业的发展都只会对京津冀的经济状况产生负向效应；（2）如果经济增长是首要经济目标，天津应该加强新兴产业的发展，如果就业是首要经济目标，河北应该加强新兴产业的发展。