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设计-施工总承包模式在南京地铁盾构工程中应用 总被引:1,自引:0,他引:1
设计—施工总承包模式的特点和优点已经得到业界的广泛认同,但该模式目前在我国成功应用的例子还不是很多。通过对南京地铁盾构工程在不同承包模式下合同支付费用变更的研究,分析了设计—施工总承包模式在该工程中应用的优越性,并进一步对城市轨道交通建设中复杂、特殊工程的承包模式提出了建议。 相似文献
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随着我国社会主义市场经济改革的不断深入,现有金融结构已不能适应经济发展。本文从金融结构调整的角度出发,对中国较发达地区,欠发达地区以及基于全国的数据进行面板回归。通过对实证结果的分析,得出金融结构调整对产业结构调整并不是简单线性关系的结论,金融结构调整应有合理的范围,当金融结构在其范围内变化时,能够促进经济的增长,当金融结构的调整超过合理范围时,金融功能的负作用会逐渐增强,当负作用积累到一定程度,会对经济的发展起到阻碍作用,我国各省份应根据自己的实际发展情况和自然禀赋,选择合适的金融结构和经济发展模式。 相似文献
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殷琼 《新疆财经学院学报》2014,(2):68-75
权威格局是各种权威要素因地位差异构成的功能互补的社会秩序协调机制,对权威格局的研究是从合法性角度对社会政治稳定必须具备的民众基础的考量。调查结果显示:新疆社会政治稳定具备牢固的维吾尔族民众基础。维吾尔族民众信任的权威格局中。以领导干部为代表的法理型权威在个人和社会事务两个领域普遍受到信任,占据权威格局的主导地位,辅之以在社会事务方面越来越受到信任的知识能力型人才代表的新型权威。经济愈发达的地区,情况愈是如此。宗教人士所代表的传统权威能够发挥的作用主要局限在社会事务领域中的道德规范,在经济欠发达地区的作用相对更大。 相似文献
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公共图书馆作为公共文化服务体系的重要组成部分,在构建学习型社会的大背景下,为促进终身学习的理念,借鉴国外图书馆的前沿探索,提升人文素质和知识内涵,实现公共图书馆在新的历史形势下自身的转型与发展。 相似文献
57.
Land use change is strongly modifying the traditional landscape of hilly productive Mediterranean sites. An example of these circumstances is the Langhe region (Piemonte, NW Italy), where woody plantations such as vineyards and orchards have been cultivated on hillslopes for centuries. In this paper we assess landscape changes occurred in the Diano study area (2651 ha) in the 1954–2000 period and we ascertain land use transition paths and rates of this rural ecosystem. Land use mapping obtained from object-oriented analysis of aerial photographs was used to quantify land use changes between 1954 and 2000. To examine the spatio-temporal patterns of land use change over time, a set of spatial statistics capturing different dimensions of landscape change was identified. An increase of landscape heterogeneity from 1954 to the present was observed due to the expansion of orchards and the fragmentation of field crops. A significant portion (55%) of current orchards surface is represented by former field crops, 24% by vineyards and 15% by forests. The strong expansion of hazelnut orchards concurred to the fragmentation of traditional rural landscape was dominated by vineyards, field crops and forests. Hazelnut orchards expansion was mainly located in places where grapes cultivation was less remunerative. A further expansion of hazelnut in the area should be planned, discussed and carefully monitored through change detection studies in order to avoid potential unsustainable use of the land. 相似文献
58.
Delineating travel patterns and city structure has long been a core research topic in transport geography. Different from the physical structure, the city structure beneath the complex travel-flow system shows the inherent connection patterns within the city. On the basis of taxi-trip data from Shanghai, we built spatially embedded networks to model intra-city spatial interactions and to introduce network science methods into the analysis. The community detection method is applied to reveal sub-regional structures, and several network measures are used to examine the properties of sub-regions. Considering the differences between long- and short-distance trips, we reveal a two-level hierarchical polycentric city structure in Shanghai. Further explorations of sub-network structures demonstrate that urban sub-regions have broader internal spatial interactions, while suburban centers are more influential on local traffic. By incorporating the land use of centers from a travel-pattern perspective, we investigate sub-region formation and the interaction patterns of center–local places. This study provides insights into using emerging data sources to reveal travel patterns and city structures, which could potentially aid in developing and applying urban transportation policies. The sub-regional structures revealed in this study are more easily interpreted for transportation-related issues than for other structures, such as administrative divisions. 相似文献
59.
Hwasung Song 《Asia Pacific Journal of Tourism Research》2018,23(2):133-145
This study examined the travel motivation of international students in Korea using the theory of travel career pattern (TCP). In particular, latent profile analysis (LPA) was applied to identify latent classes within international students. Based on the results, four latent profiles were derived and named “Core,” “Longing,” “Middle,” and “Veteran.” The results described the travel motivation and patterns across these four profiles to enhance the understanding of international students in the context of tourism. There were significant differences in travel patterns (i.e. travel companion and information sources) among the profiles segmented by motivation. This study has expanded travel motivation research by (a) applying TCP to an understudied population (i.e. international students in a non-English-speaking country); (b) comparing travel careers between the home country, Korea (i.e. a study abroad destination), and the third countries; and (c) highlighting LPA as a clustering tool to understand travel motivation. 相似文献
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