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:      
  示例: 沙坡头地区,人工植被区,变化  检索词用空格隔开表示必须包含全部检索词,用“,”隔开表示只需满足任一检索词即可!
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   5287篇
  免费   334篇
  国内免费   7篇
财政金融   415篇
工业经济   290篇
计划管理   1072篇
经济学   1260篇
综合类   401篇
运输经济   102篇
旅游经济   201篇
贸易经济   540篇
农业经济   895篇
经济概况   451篇
信息产业经济   1篇
  2025年   4篇
  2024年   67篇
  2023年   100篇
  2022年   66篇
  2021年   135篇
  2020年   256篇
  2019年   202篇
  2018年   173篇
  2017年   233篇
  2016年   243篇
  2015年   184篇
  2014年   314篇
  2013年   556篇
  2012年   347篇
  2011年   423篇
  2010年   306篇
  2009年   303篇
  2008年   310篇
  2007年   258篇
  2006年   240篇
  2005年   168篇
  2004年   139篇
  2003年   111篇
  2002年   87篇
  2001年   82篇
  2000年   49篇
  1999年   53篇
  1998年   36篇
  1997年   47篇
  1996年   35篇
  1995年   20篇
  1994年   18篇
  1993年   8篇
  1992年   14篇
  1991年   4篇
  1990年   2篇
  1989年   3篇
  1987年   2篇
  1986年   2篇
  1985年   8篇
  1984年   8篇
  1983年   8篇
  1982年   1篇
  1981年   1篇
  1979年   1篇
  1978年   1篇
排序方式: 共有5628条查询结果,搜索用时 19 毫秒
71.
    
Climate change's impact on investor behavior is a scantly investigated area in finance. This paper examines the performance of socially responsible exchange trade funds (ETFs) concerning conventional ETFs, in response to climate change events. We proxy climate change signals with a list of natural disaster events that NASA scientists relate to climate change. We contribute to existing literature, by using a very extensive information set of ETF strategies, not influenced by rating agencies' subjective evaluation policies, and covering almost 90% of the universe of worldwide sustainability thematic-oriented ETFs. This sample allows us to identify the socially responsible investment behavior in response to unpredictable climate change shocks. Our identification strategy accounts for endogeneity concerns and relies on two-stage least square (2SLS) approach finding that responsible investors react to climate change events by purchasing socially responsible investments. The relationship between climate change signals and return of investment in themes linked to the development of sustainability is positive. Interestingly enough, the sign of this relationship is different, when we disentangle the empirical results according to the asset type, confirming that investors shift their investments from equity funds to bond funds when market sentiment worsens. Our results indicate that policymakers should increase the support of firms adopting environmentally conscious business practices, while managers should boost a sustainable business strategy.  相似文献   
72.
针对产品生产和加工方法贸易措施的违法性分析   总被引:1,自引:0,他引:1  
在GATT—WTO体系内部,针对产品生产和加工方法贸易措施的合法性,以及如何规范允许使用的针对产品生产和加工方法贸易措施的讨论甚为激烈,成为最有争议的焦点问题之一。本文根据对WTO协议中的GATT第1条、第3条、第20条,以及《技术性贸易壁垒协议》相关条文和案例的研究,分析了针对产品生产和加工方法贸易措施的违法性及其可能的负面效应,以供进一步的研究参考。  相似文献   
73.
胡杨 《商业研究》2005,(15):9-11
针对经常出现的资产闲置而价值逐渐消逝的现象,提出渐逝资产的概念。从马尔柯夫过程状态转移概率与价格关系出发,探讨运营收益随折扣价格变化的情况,得出必须在补充购买行为结束后逐级降价的结论,以减少渐逝资产的闲置和价值流失,实现营运部门与消费者双方利益的双赢。  相似文献   
74.
Abstract

This paper argues that, with trade and business exchange, cultural change is introduced to business partners. After analyzing the impact of trade in societies, leading to the transformation of traditional holistic ideologies to individualistic ones, Brazilian society is appraised as a dual culture existing under a constant tension between the demands of social hierarchy and predatory individualism. The paper argues that Brazil's dual culture has been a deterrent to economic remedies that worked in societies that experienced industrialism. Finally, the possibility of cultural changes is assessed and considered as a condition for Brazil's partnership in today's global markets.

Este articulo argumenta que el intercambio de negocios y/o comercial introduce adicionalmente cambios culturales a las partes involucradas en las transacciones. Despues de analizar el impacto del comercio en las diferentes sociedades, en particular el cambio que transforma sociedades con ideologia holistica y tradicional a individualistas, la sociedad Brasilena es evaluada como una cultura dual con una lucha constante entre las demandas de una sociedad jerarquicatradicional y un individualismo depredador. Se argumenta en este articulo que la cultura dual del Brasil ha sido un impedimento para el buen funcionamiento de las estrategias economicas (remedios) que funcionaron en paises expermientaron una cultura de industrializacion. Finalmente, este escrito considera el cambio cultural en Brasil como una condicion para la incorporacion del mismo a los mercados globales.

Esse artigo defende a idéia de que as trocas comerciais geram transformaç[otilde]es culturais. Após analisar o impacto do comércio na vida social, o que gera a mutação de ideologias holisticas em práticas individualistas, a sociedade brasileira é avaliada como uma cultura dual que sofre a ação tensa e constante das exigências de hieraquização social e de um individualismo predatório. A cultural dual brasiliera é entendida como um impecilho para a ação dos remédios econômicos que funcionaram em sociedades industralizadas. E, finalmente, considera-se a possibilidade de mutaç[otilde]es culturais como fatores para a integração do pais nos merados globais contemporâneos.  相似文献   
75.
分析网络课程的现状、特点及不足,借助知识管理的基本理论,提出基于知识管理的网络课程的设计原则、设计策略和设计过程,为网络课程的开发建设提供了一个新视角、新思路,从而提高网络课程的质量,进而培养学生的知识管理能力。  相似文献   
76.
    
Prior work has examined how, in the pursuit of long‐term goals, past goal behavior influences present goal choices. Instead, the present work focuses on how anticipating future goal behavior, specifically future goal‐inconsistent behavior, influences present goal choices. For example, how anticipating overspending on an upcoming vacation influences current spending behavior. The authors propose that the effect of anticipated goal‐inconsistent behavior on present goal choice is moderated by the perceived changeability of the future behavior. When future goal‐inconsistent behavior is perceived as changeable, consumers tend to imagine it away, and it has no systematic effect on present goal choices. However, when future goal‐inconsistent behavior is perceived as unchangeable, consumers accept it as a matter of fact, and systematic effects occur. Specifically, some consumers not only fail to buffer against future goal‐inconsistent behavior's negative consequences, but tend to exacerbate those consequences by increasing their goal‐inconsistent behavior in the present. Four studies examine this surprising behavior, using an individual difference (the response‐to‐failure scale) to identify when and for whom it occurs. The studies demonstrate the role of perceived changeability using various manipulations across multiple critical goal domains such as spending, eating, and academics.  相似文献   
77.
78.
This study examines the moderating effects of external environmental variables on the relationships between organizational coordination, quality of implementation of new product development (NPD) activities, and on-time completion of (or timeliness in) product development and international new product rollout (INPR) among manufacturing firms in Korea. The results indicate that quality of marketing execution is of greater importance for achieving on-time NPD and multi-country rollout in markets where competitive intensity is high than when it is low. The positive effect of HQ-subsidiary relationships on INPR timeliness is strengthened in rapid rather than slower technology-change environments. By contrast, the positive effect of HQ-subsidiary relationships on INPR timeliness is weakened in high rather than lower competitive-intensity environments. In addition, the beneficial effect of cross-functional integration on NPD timeliness is weakened in markets characterized by a high rate of technological change. The article also discusses the theoretical and managerial implications of the findings.  相似文献   
79.
80.
We estimate a probit model of residential land conversion using parcel-level data from a rural-urban county in Ohio. Spatial landscape pattern metrics are used to quantify land-use patterns and to link patterns of residential sprawl with factors estimated to influence parcel-level land conversion. Findings indicate that the location of new residential development is influenced by preferences for lower density areas that nonetheless are close to existing urban development. Combined, these forces have generated a moderated pattern of residential sprawl. Spatial error autocorrelation is controlled using a spatial sampling technique that enables consistent estimation of the probit model.  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