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51.
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John Quiggin's paper attacks public-choice theory. among other things, for its us? of the assumption of ‘rational egoism’. The object of our response is twofold. First. to distinguish egoism from rationality, and to indicate that rationality postulates, when faithfully applied, provide reasons for believing that political behaviour and market behaviour will be systematically different, and specifically that the former will be less egoistic than the latter. Second, to indicate that comparative static propasitions in public-choice theory (and in economics more generally) can be sustained on rather weaker behavioural assumptions than homo economicus embodies, and that consequently some of the public-choice orthodoxy would survive any attack on the egoism assumption. 相似文献
53.
This paper examines the performance of a sample of 101 United Kingdom unit trusts within an Arbitrage Pricing Theory framework and considers the relationship between performance and the investment objective, size and expenses of the trusts. Also, portfolio strategies using past trust performances to rank the trusts fails to generate significant abnormal returns relative to two different benchmark portfolios. 相似文献
54.
This paper examines the relationship between post–earnings announcement returns and different measures of volume at the earnings date. We find that post‐event returns are strictly increasing in the component of volume that is unexplained by prior trading activity. We interpret unexplained volume as an indicator of opinion divergence among investors and conclude that post‐event returns are increasing in ex ante opinion divergence. Our evidence is consistent with Varian [1985] , who suggests that opinion divergence may be treated as an additional risk factor affecting asset prices. 相似文献
55.
Unsophisticated Arbitrageurs and Market Efficiency: Overreacting to a History of Underreaction?
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JONATHAN A. MILIAN 《Journal of Accounting Research》2015,53(1):175-220
Prior research has documented that arbitrage activity significantly reduces or eliminates stock market anomalies. However, if anomalies arise due to unsophisticated investors’ behavioral biases, then these same biases can also apply to unsophisticated arbitrageurs and thereby disrupt the arbitrage process. Consistent with a disruption in the arbitrage process for the post‐earnings announcement drift anomaly, I document that the historically positive autocorrelation in firms’ earnings announcement news has become significantly negative for firms with active exchange‐traded options. For these easy‐to‐arbitrage firms, the firms in the highest decile of prior earnings announcement abnormal return (prior earnings surprise), on average, underperform the firms in the lowest decile by 1.59% (1.43%) at their next earnings announcement. Additional analyses are consistent with investors learning about the post‐earnings announcement drift anomaly and overcompensating. This study suggests that unsophisticated attempts to profit from a well‐known anomaly can significantly reverse a previously documented stock return pattern. 相似文献
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This paper studies the welfare costs and the redistributive effects of inflation in the presence of idiosyncratic liquidity risk, in a microfounded search‐theoretical monetary model. We calibrate the model to match the empirical aggregate money demand and the distribution of money holdings across households and study the effects of inflation under the implied degree of market incompleteness. We show that in the presence of imperfect insurance the estimated long‐run welfare costs of inflation are on average 40% to 55% smaller compared to a complete markets, representative agent economy, and that inflation induces important redistributive effects across households. 相似文献
58.
To what extent can information-technology led improvements in inventory management account for the apparent moderation of economic fluctuations in the United States since the mid-1980s? We argue that changes in inventory dynamics played a reinforcing—rather than a leading—role in the reduction of output volatility. Since the mid-1980s, inventory dynamics have changed in a manner consistent with a faster resolution of inventory imbalances. However, these changes appear to be a consequence of changes in the response of industry-level sales and aggregate economic activity to monetary policy shocks. Our results suggest that it is the interaction between the changes in inventory behavior at the industry level and the macroeconomic environment—where the latter likely includes changes in the conduct of monetary policy and the responses of the economy to policy disturbances—rather than any single factor, that has contributed importantly to the observed decline in economic volatility. 相似文献
59.
This paper analyzes a model of private unemployment insurance under limited commitment and a model of public unemployment insurance subject to moral hazard in an economy with a continuum of agents and an infinite time horizon. The dynamic and steady‐state properties of the optimum private unemployment insurance scheme are established. The interaction between public and private unemployment insurance schemes is examined. Examples are constructed to show that for some parameter values increased public insurance can reduce welfare by crowding out private insurance more than one‐to‐one and that for other parameter values a mix of both public and private insurance can be welfare maximizing. 相似文献
60.
This paper presents an adverse selection model in which progressive taxation enhances productive efficiency by encouraging a principal (buyer) to be less aggressive in contracting with an agent (seller). Wary of padded cost budgets, the buyer employs a hurdle‐rate procurement policy. With a low cost hurdle, the buyer keeps greater profits when transactions are undertaken but trade occurs less often. While the hurdle is unaffected by a flat tax, a progressive tax tilts the buyer's preference: the buyer's benefit from a lower hurdle becomes less pronounced, since the marginal increase in his profits is muted in after‐tax terms. The result is increased trade and the possibility of Pareto improvements. 相似文献