全文获取类型
收费全文 | 38937篇 |
免费 | 586篇 |
国内免费 | 13篇 |
专业分类
财政金融 | 6890篇 |
工业经济 | 2673篇 |
计划管理 | 6380篇 |
经济学 | 8536篇 |
综合类 | 796篇 |
运输经济 | 203篇 |
旅游经济 | 465篇 |
贸易经济 | 8241篇 |
农业经济 | 1254篇 |
经济概况 | 3468篇 |
信息产业经济 | 44篇 |
邮电经济 | 586篇 |
出版年
2023年 | 100篇 |
2021年 | 164篇 |
2020年 | 303篇 |
2019年 | 435篇 |
2018年 | 2701篇 |
2017年 | 2494篇 |
2016年 | 1658篇 |
2015年 | 468篇 |
2014年 | 660篇 |
2013年 | 2475篇 |
2012年 | 1081篇 |
2011年 | 2558篇 |
2010年 | 2381篇 |
2009年 | 2217篇 |
2008年 | 2238篇 |
2007年 | 2487篇 |
2006年 | 736篇 |
2005年 | 981篇 |
2004年 | 1002篇 |
2003年 | 1120篇 |
2002年 | 786篇 |
2001年 | 549篇 |
2000年 | 542篇 |
1999年 | 448篇 |
1998年 | 455篇 |
1997年 | 460篇 |
1996年 | 425篇 |
1995年 | 394篇 |
1994年 | 377篇 |
1993年 | 383篇 |
1992年 | 363篇 |
1991年 | 347篇 |
1990年 | 319篇 |
1989年 | 280篇 |
1988年 | 231篇 |
1987年 | 275篇 |
1986年 | 259篇 |
1985年 | 369篇 |
1984年 | 411篇 |
1983年 | 383篇 |
1982年 | 340篇 |
1981年 | 320篇 |
1980年 | 282篇 |
1979年 | 289篇 |
1978年 | 211篇 |
1977年 | 213篇 |
1976年 | 190篇 |
1975年 | 138篇 |
1974年 | 149篇 |
1973年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Faced with a record level of unemployment, the present debate in Germany is to extend the weekly hours of work. In this paper the employment effects of an economy-wide increase in weekly hours are quantified on the basis of a computable general equilibrium model for different specifications of the wage setting rule and the use of additional policy-induced public income. The simulation results back the argument of the opponents of longer working time that not more jobs will be created. However, when the higher tax revenues from GDP growth are used to reduce social security contributions, then the claim of the proponents that more jobs will be created can be supported. 相似文献
72.
73.
We investigate intraday bid‐ask spreads (BAS), volatility, and trading activity of thinly traded equity index futures contracts on the Singapore Exchange. Contrary to previous findings, we find a rather flat BAS pattern during the trading day. However, consistent with past findings, an increase in risk widens the spread and a higher trading activity reduces it. When trading occurs in a day, spreads are reduced. No significant difference in volatility between days with and without trades was detected. When trades occur, quote revisions increase, and it is positively related to the number of trades. An increase in the number of quote revisions increases the likelihood of a transaction, and when quotes are current, revisions that are accompanied by trades carry new information. We provide evidence that contracts that are thinly traded may possess liquidity attributes as long as their price quotes remain current. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:455–486, 2003 相似文献
74.
Unlike the traditional futures contract risk‐based approach to margining, new security futures contracts are margined under a strategy‐based margining system similar to that which applies in the equity options markets. As a result, these new margin requirements are potentially much less sensitive to changes in market conditions. This article performs a simulation to evaluate whether these alternative margining methodologies can be expected to produce comparable outcomes. The analysis suggests that a 1‐day settlement period will likely lead to collection of customer margins that are virtually always greater than that which its traditional risk‐based counterpart would require. A 4‐day settlement period would lead to margin requirements that both significantly under‐ and overmargin relative to a comparable risk‐based system. This study argues that exchanges may approach the preferred probability of customer exhaustion by managing margin settlement intervals. Thus, the new strategy‐based rules, in and of themselves, will not necessarily inhibit new security futures trading activity. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:989–1002, 2003 相似文献
75.
The primary purpose of this research was to investigate the effect of investment in information technology in a supply chain. The results of that investigation are presented by focusing on an empirically tested supply chain relationship model containing both behavioral and operational constructs. The four behavioral constructs represented in the model are relationship trust, relationship commitment, relationship dependence, and long‐term relationship orientation. The four operational constructs represented in the model are retailer investment in interorganizational information technology, perceived supplier investment in interorganizational information technology, logistics efficiency, and logistics effectiveness. Among other findings, the results of the investigation found that perceived supplier investment in interorganizational information technology has a significant and positive effect on logistics efficiency. 相似文献
76.
Terry L. Esper Thomas D. Jensen Fernanda L. Turnipseed Scot Burton 《Journal of Business Logistics》2003,24(2):177-203
The Internet has increased the level of importance of the end‐consumer market to transportation carriers. In two between subject experiments, carrier disclosure on retail merchant websites is examined as a strategic differentiation strategy. Predictions are offered concerning effects of carrier disclosure strategies on product delivery‐related expectations, consumer attitudes, and intentions to purchase a product online. Results from Study 1 reveal significant differences between disclosure and nondisclosure of the carrier for numerous product delivery‐related variables, as well as many differences between the six carriers examined in this first study. Study 2 extends these findings by showing that providing consumers with a choice of carrier leads to increased levels of satisfaction with the online experience and greater willingness to buy, relative to nondisclosure and disclosure strategies. 相似文献
77.
Close relationships between and among supply chain members are becoming more prevalent. However, there is lack of agreement in the literature and in practice concerning the characteristics of different interorganizational relationships. The resultant confusion is an obstacle to the progression of research and could cause problems among firms in a supply chain. Based on previous research and an exploratory study conducted with company executives responsible for supply chain management activities, this article seeks to introduce the concept of relationship magnitude (i.e., the extent or degree of closeness or strength of the relationship) and differentiate it from relationship type (i.e., classes of relationships that share common traits). Implications for managers and opportunities for future research are provided. 相似文献
78.
David Etherington 《Local Economy》1987,2(1):31-37
In this continuing discussion on the role of industrial improvement areas the author extends the arguments to suggest how IIAs could be a progressive planning tool linking economic, property and land-use strategies. 相似文献
79.
The purpose of this paper is to examine changes in stock return variances following option introduction. The sample consists of National Market System stocks and employs both transaction returns and returns based on bid and ask quotes. Variances are decomposed into portions attributable to bid-ask spreads, return autocorrelations, and intrinsic variances. Spreads play a negligible role in explaining variance changes. A generally positive component to short-term autocorrelations falls following option introduction, increasing variances over short holding periods. Intrinsic variances fall prior to the October 1987 crash, but do not change after the crash with option introduction. 相似文献
80.
Abstract: This paper examines the characteristics of firms that account for deferred tax liabilities related to government investment grants under an extended adoption timing period. Not only the recognition but also the timing decision is associated with changes in future performance and changes in the debt structure. Recognisers outperform non‐recognisers in the future, while early recognition is related to post recognition performance but only for those firms that currently perform well. Changes in the balance sheet structure are also related to both decisions. Firms with recent increases in the debt level tend to postpone recognition, while currently well‐performing firms that increase their future debt level are less likely to recognise deferred taxes. 相似文献