简述PHC管桩的发展态势

通过对桩基常用施工方法的比较，阐述了预应力高强度混凝土管桩的优点和静压法沉桩施工工艺的先进性。特别对人们关注的可靠性和经济性等问题作了较全面的分析，认为在诸多型式的桩基中预应力高强度混凝土管桩将独占鳌头。     

数字经济推动区域经济增长的实证研究——基于长江经济带2010-2019年数据

数字经济目前已经成为国民经济发展的重要推动力,研究数字经济对区域经济增长所起到的推动作用具有非常重要的现实指导意义。搭建数字经济发展测评体系和区域经济发展水平测量体系,通过对长江经济带2010-2019年相关指标数据的搜集,测算了长江经济带数字经济发展水平与整体经济发展水平,并对二者之间的耦合关系进行了验证,研究发现,长江经济带的整体数字经济发展水平相对均衡,数字经济对于区域经济增长有显著的推动作用,同时针对长江经济带数字经济助力经济增长给出了管理层面的建议。     

云南深度融入“一带一路”构建对外开放新局面研究

云南深度融入“一带一路”构建对外开放新局面,有利于建设好面向南亚东南亚开放辐射中心,有利于构建“大循环、双循环”新发展格局。通过分析云南深度融入“一带一路”建设的现状、存在的问题,提出构建对外开放新局面的意见建议:系统设计深度融入“一带一路”,制定促进对外开放新局面的政策措施,积极补齐基础设施建设短板,加快建设与周边国家互联互通的国际大通道,与沿线国家协商共建自由贸易网络体系,做强各类对外开发开放平台,形成协作高效的开放平台体系,积极推动中缅经济走廊建设取得实质性进展,为深化中国与东盟的合作打造样板示范。     

气候变化对经济金融系统性冲击的物理风险研究

中国作为全球最大的发展中国家,其综合实力伴随着经济、科技的快速发展而不断增强。但我国的极端气候事件趋多趋强,气候风险水平呈上升趋势,影响我国经济社会的发展。金融作为经济运行的核心,在宏观经济中有着举足轻重的作用。为了研究气候变化与经济金融稳定之间的关系,本文对极端气候事件损失体系和区域经济金融稳定性综合体系进行指数合成并构建面板模型探讨气候变化中气温和降水量因素的变动和极端气候事件对区域金融稳定的影响,得出气候变化的物理风险通过极端气候事件对经济发展和金融稳定有负面影响,并根据实证结果提出完善绿色金融市场和优化信息披露制度的政策建议。     

Terrorism and its impact on economic growth and technological innovation

Recent terrorist acts, in particular the 9-11 attacks in 2001, have created disruptions in the global economy. The short-term impact had been felt in the global tourism, airline industries, as well as the financial markets. While the global economy has recovered and is adjusting to the new global realities, the longer-term impact of heightened security risk across the world can be felt in the form of higher risk premiums in asset markets, as well as a shift of resources towards dealing with terrorism. Just as World War II had accelerated the development of nuclear energy as well as a major contributing factor in the genesis of Silicon Valley, the current war against terrorism will affect both the pace and trajectory of technology trends, as efforts are focused on developing technologies to combat terrorism. In this paper, we review the effects of the current war on terrorism in terms of its impact on the economy, the allocation of resources to R&D, and the trajectory of future R&D.     

Institutions and economic growth in Portugal: a quantitative exploration

This paper presents a broad diagnostic of the level of institutional development in Portugal in the legal, corporate governance and financial systems. A comparative assessment suggests that Portuguese institutions are less developed than their European Union and East Asian counterparts, more developed than Greek institutions and on a level similar to that of Spanish institutions. We use data for a wide cross-section of countries since 1960 and correlate indicators of institutional development with the long-term average growth rate, identifying issues where reform is likely to significantly affect economic growth. We construct three new indices that measure the potential of institutional reform - the impact of reform on growth, the required reform effort and the efficiency of reform index - by taking into consideration the institutional distance between Portugal and the European Union. These indices measure, respectively, which reforms have the most payoff in terms of growth, which are less costly to undertake and which deliver the most growth per required effort. Our results strongly suggest that in a large number of issues, institutional reform may translate into substantially higher rates of economic growth. Of the ten most promising reforms, six are in the legal area, irrespective of which of the indices is considered. Whereas legal reform is promising at the aggregate and the microeconomic levels, in the financial sector aggregate indicators offer the wider scope for productive reform, while in the corporate governance area it is indices at the micro level that hold the most promise. These results support the view that a comprehensive reform effort is likely to deliver higher rates of growth in Portugal, allowing faster real convergence with the rest of the European Union.Received: January 2003, Accepted: February 2004, JEL Classification: O0, O5, K00, K4, G2, G3This paper is based on Firms, Financial Markets and the Law: Institutions and Economic Growth in Portugal, prepared for the conference Desenvolvimento Económico Português no Espaço Europeu: Determinantes e Políticas, organized by the Banco de Portugal. Financial support by the Banco de Portugal, NOVA FORUM and FUNDAÇÃO Para a Ciência e tecnologia and Polti through feder are gratefully acknowledged. Comments from Marcelo Rebelo de Sousa, two anonymous referees and the editor are sincerely appreciated. The usual disclaimer applies.     

非国有经济发展对中国经济增长质量影响机理研究——来自VEC模型的新证据

转轨以来,中国非国有经济的发展促进了经济增长的数量扩张.这是因为,经济非国有化改革作为一种制度创新,是一种增量式改革.这种改革使得体制内利益在未受影响的条件下,实现了帕雷托式的增长.然而,非国有经济的发展并没有带来中国经济增长质量的同比改善.这是因为,中国民营企业发展一般都过分强调以利润为中心,忽略环境成本,并且由于融资困难等因素导致了其技术创新能力的弱化;其次,中国引进的外资不仅在技术和管理创新的扩散效应上没能达到预期效果,而且日益增加的加工贸易通过转移定价方式使中国经济不能充分享有出口增长带来的利润贡献.     

转基因标签的消费者维度思考

本文从消费者角度分析了现行转基因标签政策实施过程中存在的成本转移、道德风险等等被忽视的问题．并以我国包装大豆色拉油市场为例，利用垂直差别化模型对加贴转基因标签前后消费者经济福利进行了比较。     

经济全球化进程中城市群发展的制度创新

从我国城市群目前的发展现状来看,影响城市群发展的主要因素是制度障碍:城市群跨界需求与行政区分割的障碍、缺乏城市群一体化发展的协调政策、没有形成有效的空间管理机制。因此,制度创新应是发展我国城市群的关键所在,重点是在法律制度、空间规划和管理制度等方面的创新。     

天山北坡经济带绿洲生态经济脱钩分析

本文根据脱钩理论与模型的基本思想,引入转移投入概念,建立了绿洲脱钩分析模型,对"七五"以来四个五年计划期间GDP快速增长的天山北坡绿洲经济带的生态—经济关系进行了分析,提出了经济带脱钩关系特点,进一步提出了绿洲经济优化调控的建议。