首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   284篇
  免费   18篇
  国内免费   2篇
财政金融   27篇
工业经济   7篇
计划管理   85篇
经济学   34篇
综合类   22篇
运输经济   13篇
旅游经济   27篇
贸易经济   68篇
农业经济   9篇
经济概况   12篇
  2023年   11篇
  2022年   3篇
  2021年   8篇
  2020年   14篇
  2019年   16篇
  2018年   11篇
  2017年   14篇
  2016年   11篇
  2015年   12篇
  2014年   20篇
  2013年   43篇
  2012年   15篇
  2011年   11篇
  2010年   8篇
  2009年   13篇
  2008年   11篇
  2007年   13篇
  2006年   9篇
  2005年   16篇
  2004年   6篇
  2003年   6篇
  2002年   4篇
  2001年   7篇
  2000年   3篇
  1999年   5篇
  1998年   1篇
  1996年   2篇
  1995年   2篇
  1994年   1篇
  1993年   1篇
  1992年   2篇
  1991年   1篇
  1988年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
排序方式: 共有304条查询结果,搜索用时 156 毫秒
91.
Informed by the thesis that media representations are influential channels for the birth and reinforcement of discursive constructions, this article will focus on representation in ITV's successful sitcom Benidorm (2007–). The corpus analysed includes the show's first four seasons and 2009 special, which are all the Benidorm materials available on DVD at the time of writing. Given this TV production's subject matter, insights will be provided into Spain's sand-and-sun tourism industry, with particular reference to the resort of Benidorm. Benidorm will be placed within the wider British sitcom tradition and humour will be treated as intersecting with power and social structures and so inseparable from social and national discourses. The interface will be explored between televised humour and the discourses of tourism, with particular reference to current British identity issues such as how British classed identities perceive Other imagined communities, in particular, Spain and the Spanish; and how such identities are performed spatially whilst on holiday.  相似文献   
92.
Several aspects of socio-psychological research are presented dealing with relationships between transport, leisure, and tourism in France. The socio-psychological approach to long distance travel for leisure and vacation purposes is illustrated by recent studies of family mobility: for instance, family decision-making, sociability and travel, territorial behavior and the “territorialisation” process, and change processes related to the family life-cycle. Traffic problems in touristic sites are also considered. An attempt at an action-research approach shows how traffic management in urban areas could benefit from the use of socio-psychological survey data. The diagnosis, forecasts and evaluation of travel behavior could be made more effective through more active cooperation between traffic policymakers, traffic engineers and social scientists.  相似文献   
93.
The Food Standards Agency was set up in April 2000 to protect the health of the public and the interests of consumers in relation to food. Its principal purpose is to put the consumer first. But what does this mean in practice? The Agency is finding ways to help consumer organizations and consumer representatives contribute more effectively to its work. However, consumer organizations cannot hope to represent the full range of consumer perspectives, and so the Agency is keen to reach out to individual consumers using a variety of innovative mechanisms. This article will describe why the Agency was established and how it achieves its main objective of putting the consumer first. It will discuss how the Agency is developing and testing new ways of working to ensure that the consumer perspective is fully accounted for when developing and evaluating policies, including setting up an influential new Consumer Committee. It will go on to highlight a number of recent innovative consumer consultations and structures that have been established to involve consumers in Agency policy making. It will discuss these processes and how the lessons that have been learnt are informing future Agency strategies. The article will then describe how the Agency protects consumers through effective risk communication strategies and how its Annual Consumer Attitudes Survey will help it measure success so that it can continue to set new stand‐ards in putting consumers first in relation to food.  相似文献   
94.
We establish necessary and sufficient conditions for an H1-martingale to be representable with respect to a collection, of local martingales. M H1( P ) is representable if and only if M is a local martingale under all p.m.'s Q which are "uniformly equivalent" to P and which make all the elements of local martingales (Theorem 1.1). We then give necessary and sufficient conditions which are easier to verify, and only involve expectations (Theorem 1.2). We go on to apply these results to the problem of pricing claims in an incomplete financial market-establishing two conjectures of Harrison and Pliska(1981).  相似文献   
95.
This article investigates the effects of union and nonunion employee representation (ER) on the use of high‐performance work systems (HPWSs) in the French context. We use microdata from a nationally representative survey (REPONSE 2010–11) and estimate models dealing with the potential endogeneity of ER. After controlling for endogeneity and for a range of workplace characteristics, regression analyses suggest that neither union nor nonunion representatives are inherently against the use of HPWSs. Moreover, these forms of ER cannot be regarded as substitutes for one another. Results vary, depending on what type of bundle of practices is considered. © 2016 Wiley Periodicals, Inc.  相似文献   
96.
基于葡萄牙历史环境修复更新项目实践经历,记录 了中国团队在作为海上丝绸之路端点之一的里斯本市使用中国 传统设计手法解决西方语境下的设计问题的探索过程。通过中 葡双方设计思路和手法的交流与比较,探讨了中国风景园林设 计范式与手法应用于西方场景中的适应性。中方设计团队在建 筑方面以气韵相合为法则,营造了顺应场地气息的整体环境; 园林方面以传移模写为法则,构建了“可游可居”的空间结 构,营造了基于园居生活的适地情境。实践说明了中国园林在 伴随祖国“一带一路”的发展过程中,作为中国文化的精髓代 表,可以极强的适应性和先进性为世界人居环境建设作出更大 的贡献。  相似文献   
97.
产品质量竞争力及其构成要素研究   总被引:4,自引:0,他引:4  
在综合分析企业竞争力的基础上,给出了企业质量竞争力的定义,界定了质量.竞争力的基本特征,并就产品质量竞争力构成要素的内涵及相互关系进行了论述。  相似文献   
98.
Tashiro (Ann Inst Stat Math 29:295–300, 1977) studied methods for generating unform points on the surface of the regular unit sphere. The L p -norm unit sphere is a generalization of the regular unit sphere. In this paper we propose a method associated with an algorithm for generating uniformly scattered points on the L p -norm unit sphere and discuss its applications in statistical simulation, representative points of a wide class of multivariate probability distributions and optimization problems. Some examples are illustrated for these applications. This research was supported by The University of Hong Kong Research Grant and a University of New Haven 2005 and 2006 Summer Faculty Fellowships.  相似文献   
99.
基于稀疏编码的图像分类算法,当源域和目标域间样本服从不同分布时,从源域样本中学习到的字典无法有效对目标域样本进行编码,进而严重影响算法的分类性能。为了解决此问题,提出一种基于字典对齐的迁移稀疏编码(TSC-DA)算法。一方面,通过将字典对齐机制引入稀疏编码模型训练过程中,以减少源域和目标域间样本分布差异;另一方面,采用L2正则化项代替字典约束项,将其转化为无约束优化问题,从而回避了拉格朗日对偶法复杂的求解方式。实验结果表明,TSC-DA能够有效提高目标域的图像分类精度。  相似文献   
100.
Using social media data for statistical analysis of general population faces commonly two basic obstacles: firstly, social media data are collected for different objects than the population units of interest; secondly, the relevant measures are typically not available directly but need to be extracted by algorithms or machine learning techniques. In this paper, we examine and summarise two existing approaches to statistical analysis based on social media data, which can be discerned in the literature. In the first approach, analysis is applied to the social media data that are organised around the objects directly observed in the data; in the second one, a different analysis is applied to a constructed pseudo survey dataset, aimed to transform the observed social media data to a set of units from the target population. We elaborate systematically the relevant data quality frameworks, exemplify their applications and highlight some typical challenges associated with social media data.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号