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1.
Over the last decade, the global value chain (GVC) approach, with its associated notions of chain governance and firm upgrading, has proliferated as a mode of analysis and of intervention amongst development institutions. This article examines the adoption and adaptation of GVCs at four multilateral agencies in order to understand the purchase of value chain approaches within the development field. Mixing GVC perspectives with other theoretical influences and applied practices, these institutions deploy value chain frameworks to signal a new generation of policies that promise both to consolidate, and to advance beyond, the market fundamentalism of the Washington Consensus. To achieve this, value chain development frameworks craft interventions directed toward various constellations of firm and non‐firm actors as a ‘third way’ between state‐minimalist and state‐coordinated approaches. The authors identify key adaptations of the GVC framework including an emphasis on value chain governance as an instrument to correct market failure in partnership with state and development agencies, and upgrading as a de facto tool for poverty reduction. They find that efforts are ongoing to construct a ‘post’ to the Washington Consensus and that the global value chain is enabling this process by providing a new language and new object of development intervention: ‘the chain’ and the local–global linkages that comprise it.  相似文献   

2.
This article presents a design methodology for seismic upgrading of existing reinforced concrete (RC) buildings. The methodology is based on the modification of the deflected shape of the structure so as to achieve a near-uniform distribution of interstorey drift along the building height, thereby eliminating damage localization. Yield Point Spectra are utilized for the definition of demand and a direct displacement-based design approach is implemented. The fundamental steps of the method are described in detail, including a systematic evaluation of assumptions and limitations. A full-scale tested structure is used as a case study for assessment and verification of the proposed methodology. Alternative retrofit scenarios are set according to target response and performance levels. The role of the target deflected response shape and its influence on the outcome of the retrofit strategy is investigated. The viability of the alternative retrofit scenarios is studied for different ground motions including near-fault earthquake records.  相似文献   

3.
In recent decades in Europe, municipalities have promoted many poorly qualified and widespread industrial parks. These policies have caused various problems such as oversupply of industrial land, obsolescence and high vacancy rates. The future of these sites is uncertain and has become a key issue in planning. Nowadays, policies are focused on upgrading these sites and on implementing regional coordinated practices. This paper describes a methodological approach to identifying a subregional network of industrial parks in the Ave valley, Portugal. The network is based on the parks’ attractiveness and has the purpose of supporting planning policies in terms of upgrading and providing new sites. The approach was based on a multi-criteria analysis whereby the parks were ranked according to their attractiveness considering their coverage in terms of infrastructures, services and accessibility. Results show that the majority of the existing and planned parks, even if upgraded, will not be very attractive and will be limited to a municipal scale due to structural problems related to their location and poor coverage. Moreover, the paper also discusses the challenges in implementing this planning approach at a subregional level. Despite the specificities of the case study, this methodology could be adopted in similar studies.  相似文献   

4.
A system innovation is a cross-organizational qualitative intervention that various system participants bring about together through their various contributions of different kinds of knowledge and skill. The term refers to the innovation of an entire system involving many actors. Spatial development refers to both the dynamic in land use, and changes in the development and implementation of spatial plans. The current large number of societal and spatial developments taken as a whole in a country such as the Netherlands increase the pressure on space and create the need for a powerful system innovation. This paper explains the system innovation which is going on in the Netherlands now, drawing on such themes as the coproduction of policy, public–private partnership and demand management. A process architecture for area development is more and more proposed, in which project envelopes are formed, the scope is optimized and surplus profits are ploughed back into the area (value capturing). The future will tell whether this new approach will really work and whether the traditional values and performance of Dutch spatial planning will be safeguarded under changing circumstances.  相似文献   

5.
Facing a scarcity of land for urban development and demand for public services, the Municipal Council of Bilbao recognizes the need to make good use of its built heritage and to upgrade it, while maintaining its cultural and functional features. A good example is the case of the Ribera Market, the largest covered market in Europe. Deterioration of the market building and public pressure for improved services has led to proposals for its rehabilitation. To do so, the constructive condition of the building must first of all be assessed and, then, the most appropriate and compatible intervention technique must be selected. Today, there is a broad selection of intervention technologies, for the improvement of both mechanical behaviour and durability. However, in this article, it is demonstrated that these technologies are not always applicable in old buildings, because they depend on the severity of the pathology and the intrinsic characteristics of the building: for example, corrosion due to chloride ions originating from the concrete mass. The lack of knowledge on constructive techniques and the requirements for the application of new technologies complicate the interventions, which in turn further complicates decision-making with regard to the property.  相似文献   

6.
Industrial policy is back at the centre stage of policy debate, while the world is undergoing dramatic transformations. This article contributes to the debate by developing a new theory of industrial policy, incorporating some issues that have been neglected so far and taking into account the recent changes in economic reality. The authors explore how the incorporation of some of the neglected issues — commitments under uncertainty, learning in production, macroeconomic management (especially demand management), and conflict management — changes the theory. They then examine how the theory of industrial policy should be modified in light of recent changes in economic reality: the rise of the global value chain, financialization and new imperialism. This contribution aims at promoting a pragmatic approach to industrial policy and pointing to new areas for policy intervention in a changing world.  相似文献   

7.
Development organizations are increasingly adopting market‐based approaches to reducing rural poverty and food insecurity in the global South. The value chain approach is particularly popular. Aid donors, governments and non‐governmental organizations are applying value chain concepts originally designed for promoting industrial production to smallholder agricultural production. Cashew development in Côte d'Ivoire illustrates this new approach to rural development in which ‘upgrading’ the production and processing links are top priorities. A core assumption informing this approach is that improvements in product quality at the producer level will yield higher producer prices and incomes. This article examines this assumed quality–price relationship through a comparative analysis of cashew quality and prices in Côte d'Ivoire. The research reveals a disconnect between nut quality and producer prices. The case study demonstrates that power relations are more important than quality in setting producer prices for raw cashew nuts.  相似文献   

8.
苏建军  孙根年 《人文地理》2018,33(3):152-160
旅游投资增长质量对旅游业高速发展和产业转型升级至关重要。利用1999-2014年中国旅游投资省际面板数据,从产出效率与运行过程两方面,系统分析了旅游投资增长质量的时序动态变化与地区差异。结果表明:①考察期内旅游投资增长产出效率提升明显,并处于中高水平。但东中西区域差异明显,中西部旅游投资增长效率低于东部地区,具有一定阶梯性。②旅游投资增长时序波动性较明显,呈现出时冷时热的变化态势,体现出总体稳定性欠佳。东中西区域的稳定性也较差,但自2011年后有所改善。③旅游投资增长协调性不好,表现为旅游投资增长滞后于旅游发展需求。旅游产品(项目)开发与相关基础设施建设,还无法满足快速增长的旅游新需求。这为提升旅游投资质量提供了新的参考与依据。  相似文献   

9.
This paper addresses how the growth of tourism global production networks (GPNs) based in Kenya and Uganda created uneven social upgrading outcomes for workers and communities. A tourism GPN and social upgrading framework follows a global political economy approach to analyzing tourism development and labor in diverse tourism geographies. Two tourism GPNs are investigated: Mombasa, Kenya, and Murchison Falls National Park, Uganda. Four main findings emerge: (1) governance relationships between tour operator and accommodation firms directly impacted social upgrading outcomes for hotel workers and indirectly for excursion workers; (2) excursion workers and community members had precarious connections to tourism GPNs; (3) public governance and collective power were key components to social upgrading while supporting its unevenness; and (4) societal embeddedness constructions around gender and regional space influenced worker and community social upgrading potential. Social upgrading is shaped by a confluence of firm, institution, geography, and labor conditions that differentially materializes in specific tourism GPN arrangements.  相似文献   

10.
李亚娟  罗雯婷  王靓  张祥  胡静 《人文地理》2021,36(1):183-192
城市旅游休闲热点区是城市发展和转型升级的新增长极.本研究以中国旅游休闲城市武汉市为例,依托POI数据和GIS空间分析技术,分析武汉市旅游休闲热点区的空间特征和业态集聚特征,进而探讨其驱动机制.研究发现:①武汉市旅游休闲热点区呈现出由中心城区集聚向远城区蔓延、单核主导向多核引领的空间演变规律.②武汉市旅游休闲热点区规模与...  相似文献   

11.
面对复杂的城市问题,单一学科的理论和方法往往束手无策,交叉学科的研究是近年来城市问题研究的主要趋势之一,特别是随着GIS的发展,借助GIS及相关学科的研究方法和手段进行城市现状分析和预测将是城市学领域发展的重要方向之一。本文以湖北省崇阳县白霓镇为例,借用经济学供需基本概蓬和分析方法,结合社会学的调查研究方法,利用系统工程方法和GIS技术,在深入调查的基础上,开创性地提出城市用地供需度的概念,并从它们与区位之间关系的角度出发分析用地结构,探讨了GIS在城市用地结构分析与辅助用地调整方面的应用,旨在抛砖引玉,引起同行们对新技术条件下传统研究方法革新的重视。  相似文献   

12.
基于便利性的城镇发展战略对于新型城镇化转型具有重要意义。着眼于城镇居民生活质量的提升,围绕供需维度构建便利性测度体系,以多源网络大数据为支撑,分析南京市中心城区便利性的供需空间特征。结果表明,中心城区便利性供需关系多样,空间分布大体类似,倾向于多类聚合分布,并呈现较为明显的圈层集聚特征;主城便利性多供小于求,副城则以低供需平衡及供小于求为主,各公共活动中心便利性发育水平不一;中心城区整体便利性供需水平不高,其空间分布在数量及连续性方面均呈现低供需平衡、低供-中需以及中供-低需依次降低的模式。  相似文献   

13.
A period-independent approach for the selection and scaling of ground motion records aimed at reducing demand variability is proposed for seismic response history analysis. The same set of scaled records can be used to study various structures at the same site regardless of their dynamic characteristics. The statistical robustness of the proposed and current approaches is compared through nonlinear inelastic dynamic analyses performed on single-degree-of-freedom systems and multi-story braced frames. The proposed approach leads to consistent response predictions with a limited number of records. This is advantageous for day-to-day structural design or assessment against code hazard-based seismic demand levels.  相似文献   

14.
论当前中外社会地理观   总被引:1,自引:1,他引:0  
社会地理学是人文地理学重要的分支,在我国刚刚兴起。
当前国外社会地理学的研究,重视紧迫的社会问题,重视社会问题中受害的一方,重视社会问题的空间过程和区域特征,重视城市研究。
社会地理学研究有很高的社会和经济价值,建设我国自己的社会地理学很有必要。  相似文献   

15.
A methodology for the seismic vulnerability reduction of old masonry towers with external prestressing is presented. It is applied at the Colonial bell-towers of the Cathedral of Colima, Mexico, characterized for being a high seismic area (M>7.5). The 3D FE models are calibrated with experimental data and assessed through nonlinear static approaches including the seismic demand and an accurate validated masonry model. Based on an extensive parametric study on different configurations of old masonry towers, it is selected an optimal prestressing force and device. The Colonial towers are retrofitted with four prestressing devices of FRPs to convert them into a high energy-dissipative reinforced masonry. The external vertical prestressing is included at key points identified in the seismic vulnerability assessment. This technique is in compliance with the demand for architectural conservation and may be located without drilling and unbounded in order to be fully removable. The seismic performance is enhanced by increasing force, displacement, and internal confinement. It is observed an upgrading of 35% and 20% of displacement capacity. With these results it is corroborated that external vertical prestressing allows a substantial increment of ductility for seismic energy dissipation purposes.  相似文献   

16.
产业结构演变与城市空间拓展的互动是城市实现可持续发展的重要路径。本文从产业结构演进与城市用地结构变化、产业结构更新与城市功能地域调整、产业结构调整与城市空间形态优化等方面分析了城市产业结构升级与城市空间形态演变的互动机制,并以长春市为例,研究了长春市产业结构演变与城市空间形态演变的互动变化过程,提出了二者未来互动变化的趋势。  相似文献   

17.
经过 2 0余年的改革开放 ,我国已进入一个新的新型时期。在社会转型过程中 ,社会结构发生了显著的变化 :产业结构由低级向高级推进 ,所有制结构由单一向多样发展 ,城乡二元结构出现松动 ,阶级、阶层发生深刻变化。这必然对统一战线的内部关系产生重大的影响 :工人阶级内部结构复杂化 ,使工人阶级实现自身团结统一的问题突出起来 ;农民阶级的急剧分化 ,使工农联盟的巩固面临新问题 ;私营企业主阶层的产生及其迅速扩大 ,使统一战线内部关系出现前所未有的新变化 ;产业结构优化升级和信息时代的到来 ,对做好知识分子工作提出了更高的要求 ;大量新的社会阶层的出现 ,客观上给民主党派的社会基础带来新的变化 ;“四个多样化”的出现 ,要求统一战线在处理内部关系时 ,应以“三个代表”的思想为指导 ,更加重视照顾同盟者利益和在政治上扩大民主。  相似文献   

18.
This article develops and calibrates a spatial interaction model (SIM) incorporating additional temporal characteristics of consumer demand for the U.K. grocery market. SIMs have been routinely used by the retail sector for location modeling and revenue prediction and have a good record of success, especially in the supermarket/hypermarket sector. However, greater planning controls and a more competitive trading environment in recent years has forced retailers to look to new markets. This has meant a greater focus on the convenience market which creates new challenges for retail location models. In this article, we present a custom built SIM for the grocery market in West Yorkshire incorporating trading and consumer data provided by a major U.K. retailer. We show that this model works well for supermarkets and hypermarkets but poorly for convenience stores. We then build a series of new demand layers taking into account the spatial distributions of demand at the time of day that consumers are likely to use grocery stores. These new demand layers include workplace populations, university student populations and secondary school children. When these demand layers are added to the models, we see a very promising increase in the accuracy of the revenue forecasts.  相似文献   

19.
区域产业结构演变的城市化响应机理研究   总被引:4,自引:0,他引:4  
区域产业结构演变城市化响应的研究作为地理学新的研究领域,已经越来越成为理论界和学术界研究的热点。本文对产业结构演变城市化响应的内涵进行了界定,从产业结构演变城市化响应过程、强度、形态、机制以及变化趋势等几个方面系统分析了区域产业结构演变的城市化响应机理,并建立起理论体系,以期为区域产业结构与城市化的研究开拓新的研究视角。  相似文献   

20.
The first step in a hysteretic energy-based design approach of performance-based design is the estimation of hysteretic energy demand in the structure. A nonlinear response-history analysis of the multi-degree of freedom model gives an accurate estimation, but it is not suitable for adopting in design. Two alternative methods, based on the concepts of modal pushover analysis (MPA) and 2D-MPA, are proposed in this article for uniaxial plan-asymmetric structures. Application studies show that both methods are efficient. While the 2D-MPA-based method is more accurate, the MPA-based method is more suitable for design adoption. Significant conclusions are given for prospective application of these methods.  相似文献   

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