全文获取类型
收费全文 | 25209篇 |
免费 | 530篇 |
专业分类
财政金融 | 4584篇 |
工业经济 | 1842篇 |
计划管理 | 4314篇 |
经济学 | 5824篇 |
综合类 | 283篇 |
运输经济 | 191篇 |
旅游经济 | 382篇 |
贸易经济 | 4202篇 |
农业经济 | 1275篇 |
经济概况 | 2765篇 |
信息产业经济 | 3篇 |
邮电经济 | 74篇 |
出版年
2023年 | 115篇 |
2021年 | 160篇 |
2020年 | 319篇 |
2019年 | 513篇 |
2018年 | 554篇 |
2017年 | 580篇 |
2016年 | 563篇 |
2015年 | 374篇 |
2014年 | 620篇 |
2013年 | 2671篇 |
2012年 | 856篇 |
2011年 | 897篇 |
2010年 | 771篇 |
2009年 | 876篇 |
2008年 | 819篇 |
2007年 | 714篇 |
2006年 | 676篇 |
2005年 | 585篇 |
2004年 | 517篇 |
2003年 | 524篇 |
2002年 | 472篇 |
2001年 | 550篇 |
2000年 | 502篇 |
1999年 | 456篇 |
1998年 | 512篇 |
1997年 | 456篇 |
1996年 | 462篇 |
1995年 | 382篇 |
1994年 | 405篇 |
1993年 | 381篇 |
1992年 | 394篇 |
1991年 | 416篇 |
1990年 | 368篇 |
1989年 | 290篇 |
1988年 | 287篇 |
1987年 | 299篇 |
1986年 | 279篇 |
1985年 | 411篇 |
1984年 | 397篇 |
1983年 | 368篇 |
1982年 | 326篇 |
1981年 | 312篇 |
1980年 | 307篇 |
1979年 | 299篇 |
1978年 | 247篇 |
1977年 | 212篇 |
1976年 | 204篇 |
1975年 | 189篇 |
1974年 | 177篇 |
1973年 | 167篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
Grace K.M. Wong 《Review of urban and regional development studies : RURDS : journal of the Applied Regional Conference》2002,14(3):217-234
At some stage in every household's family life cycle, the household is likely to make certain decisions with regard to its housing environment. Although the household's housing decisions essentially comprise the decision to move, and the selection of a new residence, the process from which these decisions are derived is very complex because varying circumstances could produce a multitude of different housing decisions. Due to the sheer complexity of the household's housing decision–making process, researchers have generally focused on individual decision–making stages rather than on the process as a whole. This paper therefore attempts to conceptualize the entire household housing decision–making process using theoretical concepts from the economic perspective, and then tests the conceptual model with empirical evidence drawn from the moving population within the multi–racial society in Singapore. 相似文献
23.
24.
The influence of lagged adjustment and consumer spending on retail labour productivity is investigated. Both influences result in a procyclical productivity pattern. 相似文献
25.
C. A. Carter R. M. A. Loyns Z. F. Ahmadi-Esfahani 《Revue canadienne d'agroeconomie》1986,34(3):361-377
Canada's wheat grading system is largely based on visual criteria and it is based on relatively high quality standards. A strict varieties licensing system exists to maintain the integrity of the grade standards. One of the consequences of the licensing system is that higher yielding, lower or different quality wheats have not been grown in Canada until recently. The basic objective of this paper is to examine some of the consequences of the regulatory strategy of limiting wheat production to the traditional high quality wheats. This question is analyzed in the context of important changes in the international grain markets. Using a partial equilibrium trade model this paper estimates that if higher yielding wheats were permitted to be grown, annual producer gains would be 5 to 17 percent of current net farm income.
Le classement des blés au Canada est basé sur des critères visuels qui sont de hautes qualités. Le système actuel d'homologation des variétés est tel que l'intégrité de ce système est maintenue. En conséquent, ce système n'a pas encouragé la cultivation des blés de hauts rendements ou des varietés différentes que tout récemment. L'objectif principal de cette étude est d'examiner quelques unes des conséquences de la stratégic de la réglementation visant à limiter la production du blé aux variétés de hautes qualités. Cette question est adressée dans le contexte des changements importants qui ont eu lieu dans le marché international des grains. A l'aide d'un modèle d'équilibre partiel des échanges, la présente étude démontre gu'en permettant la production des blés de hauts rendements, le gain annuel aux producteurs serait de 5 à 17 pourcent du revenue agricole net. 相似文献
Le classement des blés au Canada est basé sur des critères visuels qui sont de hautes qualités. Le système actuel d'homologation des variétés est tel que l'intégrité de ce système est maintenue. En conséquent, ce système n'a pas encouragé la cultivation des blés de hauts rendements ou des varietés différentes que tout récemment. L'objectif principal de cette étude est d'examiner quelques unes des conséquences de la stratégic de la réglementation visant à limiter la production du blé aux variétés de hautes qualités. Cette question est adressée dans le contexte des changements importants qui ont eu lieu dans le marché international des grains. A l'aide d'un modèle d'équilibre partiel des échanges, la présente étude démontre gu'en permettant la production des blés de hauts rendements, le gain annuel aux producteurs serait de 5 à 17 pourcent du revenue agricole net. 相似文献
26.
27.
A statistically optimal inference about agents' ex ante price expectations within the US broiler market is derived using futures prices of related commodities along with a quasi‐rational forecasting regression equation. The modelling approach, which builds on a Hamilton‐type framework, includes endogenous production and allows expected cash price to be decomposed into anticipated and unanticipated components. We therefore infer the relative importance of various informational sources in expectation formation. Results show that, in addition to the quasi‐rational forecast, the true supply shock, future prices, and ex post commodity price forecast errors have, at times, been influential in broiler producers' price expectations. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
28.
29.
B. Mertens R. Poccard-Chapuis M.-G. Piketty A.-E. Lacques A. Venturieri 《Agricultural Economics》2002,27(3):269-294
The Amazon is the largest tropical forest area on Earth, and has been undergoing rapid deforestation for the last four decades. In the Brazilian Amazon, large‐scale pasture for cattle ranching and soybean production are the main land uses, leading to a yearly deforestation rate of 0.5%. These conversions are mostly located in frontier areas distributed along the so‐called “arc of deforestation”. Within this large zone, various land use change processes are interacting through several modes of land valuation and organisation. From several case studies in the State of Pará (Brazil), the current project aims at analysing how landscape dynamics are related to infrastructure development, ecological conditions, zoning policies and to the evolution and the organisation of the production, consumption and marketing chains of livestock products. This paper presents the results for one test site, the region of São Félix do Xingú, South of Pará This region is the focus of land speculation, cattle expansion, and deforestation. Road construction, investments in electrical energy, financial credit for cattle, and the land reform policies have all fuelled this process. All these factors make this region one of the most dynamic agricultural frontiers in the Brazilian Amazon. The main objective of the paper is to improve our understanding of deforestation processes by crossing spatial analyses and 1ivestock economics.studies, and to characterise the role and impact of various natural and anthropic factors in the location and development of the main types of farmers, and their policy implications. 相似文献
30.