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21.
There is a common perception that infrastructure megaprojects are difficult to implement, as they face many obstacles (cost overruns, political barriers and time delays). This was particularly the case in the UK where many projects were difficult to develop given a complex, centralized and turbulent financial context (e.g. the jubilee Line extension, the Eurostar project). Despite this complex British system, London is developing the Crossrail mega infrastructure project which is recognized to be on time and built within a planned budget. The paper aims to analyse the reasons for the development of this project in a turbulent political and financial British system. The main argument I defend is that Crossrail benefited from the constitution of a specific and localized growth coalition. Revisiting the notion developed by Logan and Molotch, I show how the aggregation of different interests (political and economic) has been essential in the concretization of this project. Actors motivated by the will to promote the growth of London and to sustain the growth of population and jobs have been at the forefront to defend Crossrail. These elements have put Crossrail on a route of success. The paper concludes by characterizing and analysing such a success.  相似文献   
22.
This paper analyzes the influence of transportation infrastructure, and in particular of the Regional Express Rail (RER), on employment and population growth in the Paris metropolitan area between 1968 and 2010. In order to make proper causal inference, we rely on historical instruments and control for all other transportation modes that could be complement or substitute to the RER. Our results show that proximity to an RER station increases employment and population density and, in particular, employment and population growth. The latter effects are higher in municipalities located near RER stations and close to employment (sub)centers. They are also found to be particularly strong for jobs in the service sector, for factory workers, and for highly educated population. We find no impact of the RER expansion on employment growth during the first part of the period, while the effect on population growth appears earlier but declines over time.  相似文献   
23.
This article constructs long-span time series indices on wages in Denmark and explores the growth in living standards in the pre-industrial era. There were several persistent upward and downward trends in real annual earnings from 1500 to 1820, but no clear upward long-term trend. This finding seems hard to reconcile with Maddison's figure for the average annual growth in real GDP per capita in Denmark (0.17%) over the same period. This is the case, even if the growth rate in pre-industrial annual earnings is underestimated by 0.05%–0.06% per annum due to an increased number of working days.  相似文献   
24.
25.
本文在考辨官员引见资料的基础上,结合相关史料,对雍正朝引见的绿营武官的籍贯、民族、身份、年龄等问题作了详尽的数据表列并进行分析,说明了当时选武官轻视武举人、重视战功等现象,揭示了武官的区域分布和民族构成及其与政治社会的关系。  相似文献   
26.
The concept of social capital is widely perceived as a promising tool for explaining differences in economic development between countries and regions. According to this theory, weak links (bridging social capital) and social trust in an area favour its better access to other forms of capital, that is, economic and human capital. However, strong links (bonding social capital) may stifle creativity and entrepreneurship. Since the vast majority of research on the impact of social capital on economic development focuses on highly developed Western European countries, it seems particularly interesting to evaluate the usefulness of this approach when applied to post‐communist countries with their different experiences. The objective of this article is to identify the spatial variation of different forms of social capital in regions of Poland and then to test a hypothesis on the impact of this capital on regional economic development. The results demonstrate that despite the existing differences between regions there are no significant relationships between levels of social capital and economic development. This may be explained either by low social capital levels or by the overall degree of Polish economic development.  相似文献   
27.
Thomas Hill Green (1836–82) has been widely recognized for his contributions to Liberal political‐social theory and for his Liberal partisanship. Historians and political theorists continue to emphasize his advocacy of limited state interference and democratic localism, as well as his anti‐imperialist statements. Recent scholars of English nationalism, national identity and patriotism, including Peter Mandler, Julia Stapleton, Krishan Kumar, H.S. Jones, Roberto Romani and Georgios Varouxakis, acknowledge Green as an acolyte of Giuseppe Mazzini, a Cobdenite and a Little Englander. While they place Green's ideas within a continuum of Victorian Liberal nationalist ideas (blending into Conservatism and socialism during the 20th century), their investigations foster the view that Green placed little value in the nation as a focus of individual and collective identification. In their readings of Green, the abstract ‘community’, free of national peculiarities, was to him the antidote to both individual and national narrowness. However, examination of Green's statements about community, the moral ideal and religion reveals that his theorising was informed by a view of national character different from that of most contemporary liberal intellectuals. Green rejected the ‘Liberal anglican’ view that a national church or clerisy was necessary to guide the development of the English nation. He identified ideas and practices of protestant dissenters as progressive forces in English history and endorsed them as means of national development. Religious pluralism and forms of ecclesiastical organisation promoting democratic localism were to Green among the essential characteristics of Englishness.  相似文献   
28.
The abundance, accessibility and value of limpets as a source of food and bait for coastal peoples have resulted in their high frequency in shell middens worldwide. The limpet Patella vulgata is found in middens from the Mediterranean to Norway, and morphometric and sclerochronological analyses of its shell can provide insight into harvesting patterns and paleoenvironmental variables valuable in reconstructing climate. Previous work with P. vulgata has relied on lines on the exterior of the shell, or on lines exiting on the shell surface in shell cross-section, as annual or sub-annual markers. Shell damage may compromise these lines and limit the use of some shells, but growth lines are also found in the better-preserved shell apex. We investigated whether the growth lines in the apex of P. vulgata from two locations in Northern Europe are annual using calcein-marking and recapture. Investigations were performed at one site in the Shetland Islands (UK) and at one site at the northern limit of P. vulgata's range in Northern Norway. We also used laser ablation to measure the concentration of minerals in the shells of two individuals from Shetland to determine if patterns of minerals suggested as bioproxies for temperature and productivity varied annually. All individuals deposited one growth line in the apex during their year in the field, and the lowest ratios of Sr/Ca and Ba/Ca and to a lesser extent Mg/Ca were coincident with annual lines on the shells from Shetland. Growth at both sites was modelled using the von Bertalanffy growth function, and apex growth was nearly five times faster in Shetland than in Norway, probably a result of differences in temperature between the two locations.  相似文献   
29.
F. Wendler  A. Okamoto  P. Blum 《Geofluids》2016,16(2):211-230
Mineral precipitation in an open fracture plays a crucial role in the evolution of fracture permeability in rocks, and the microstructural development and precipitation rates are closely linked to fluid composition, the kind of host rock as well as temperature and pressure. In this study, we develop a continuum thermodynamic model to understand polycrystalline growth of quartz aggregates from the rock surface. The adapted multiphase‐field model takes into consideration both the absolute growth rate as a function of the driving force of the reaction (free energy differences between solid and liquid phases), and the equilibrium crystal shape (Wulff shape). In addition, we realize the anisotropic shape of the quartz crystal by introducing relative growth rates of the facets. The missing parameters of the model, including surface energy and relative growth rates, are determined by detailed analysis of the crystal shapes and crystallographic orientation of polycrystalline quartz aggregates in veins synthesized in previous hydrothermal experiments. The growth simulations were carried out for a single crystal and for grain aggregates from a rock surface. The single crystal simulation reveals the importance of crystal facetting on the growth rate; for example, growth velocity in the c‐axis direction drops by a factor of ~9 when the faceting is complete. The textures produced by the polycrystal simulations are similar to those observed in the hydrothermal experiments, including the number of surviving grains and crystallographic preferred orientations as a function of the distance from the rock wall. Our model and the methods to define its parameters provide a basis for further investigation of fracture sealing under varying conditions.  相似文献   
30.
包容性旅游增长的概念内涵、实现机制和政策建议   总被引:5,自引:0,他引:5  
近年来包容性增长理念在国内外得到日益广泛的认同。本文分析了包容性增长和包容性旅游增长的概念与内涵,提出了以旅游系统为框架的包容性旅游增长实现机制,并对该机制进行了系统外部和内部两个层面的详细解析。以此为基础,本文提出加强产业融合、扩大旅游需求、加强旅游扶贫、优化旅游利益分配机制、提高旅游公共服务水平是包容性旅游增长政策的基本立足点。结合我国实际,本文提出应通过拓宽产业融合广度和提高其深度之政策来推动实现我国旅游业外部包容性增长。针对旅游业内部包容性增长,本文提出了四个方面的政策建议:出台全国性的“国民休闲计划”,大力发展国民旅游;加大针对贫困地区的旅游扶贫力度,创新旅游扶贫方式;发展社区利益型旅游业,优化旅游利益分配机制;强化旅游公共服务体系建设,建立多层次的旅游公共服务系统。  相似文献   
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