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61.
The widespread commitment of public funds to agricultural research is being questioned by administrators in governments and by the Canadian public. Questions relating to the level of public expenditure on agricultural research, the efficiency with which the resources are being allocated, and the manner in which the benefits are distributed among members of society art being asked. This study addresses these and related questions as they pertain to publicly funded wheat research activities conducted over the period 1946 to 1979- Two research scenarios were examined - one dealing with the development of new varieties of wheat and the other dealing with all research applicable to the production of wheat. The results revealed that society has indeed benefitted substantially from public investment in wheat research. The level of social benefits averaged $49 and $143 million (measured in 1971 dollars) annually for the wheat breeding and all-wheat research scenarios, respectively. The average annual internal rates of return earned from these public investments ranged between 30 and 39 percent. Furthermore, some evidence was presented that suggests society may, in fact, be underin-vesting in agricultural research in the aggregate. Finally, analyses of the distribution of the benefits showed that both producers and consumers are major beneficiaries.  相似文献   
62.
The monthly returns on equity and mortgage real estate investment trusts (REITs) are analyzed over the period July 1976 to December 1992. The results indicate that risk premiums on equity REITs are significantly related to risk premiums on a market portfolio of stocks as well as to the returns on mimicking portfolios for size and book-to-market equity factors in common stock returns. Mortgage REIT risk premiums are significantly related to the three stock market factors and two bond market factors in returns. Also, mortgage REIT shares underperform by an average of 6.8% per year.  相似文献   
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Bank regulators in the United States and other major industrial nations have agreed on a framework for regulating bank capital, proposing that all banking organizations maintain common equity and perpetual preferred capital equal to 4 percent of risk-adjusted assets. This proposal raises important questions about the effect of different capital definitions on banking organizations. This article examines the stock market valuation effects of banks' issuing securities that are considered regulatory capital over the 1982–1986 period. The results are consistent with Myers and Majluf's securities overvaluation hypothesis.  相似文献   
65.
A multiphase study tested a proposed mediated moderation model for the joint effects of ethical pressure and power distance orientation on accountants’ ethical judgments of earnings management. Results based on a sample of 354 accountants from China indicated that the relationship between ethical pressure and ethical judgments of earnings management is contingent on the accountants’ power distance orientation. That is, the relationship between ethical pressure and ethical judgments of earnings management was stronger for accountants with a high power distance orientation. The results also demonstrated that ethical beliefs in support of the company serve as a mediator for the interaction effect of ethical pressure and power distance orientation on the outcome. These results are discussed in terms of viewing earnings management as a form of unethical pro‐organizational behavior which can be effectively investigated within the framework of the person‐situation interactionist model.  相似文献   
66.
Abstract

A multinomial logit site choice model (MNL) derived by utility maximization and based on reported travel distance and perceived site attributes was estimated for 21 forest‐related urban recreation sites in Chicago. Reported travel distance was the dominant explanatory variable. Perceived site attributes included stimulating/educational, quiet, safe, and forested. When estimated for subsets of the 21 sites, the coefficient for travel distance remained stable in sign, magnitude, and significance, while coefficients for “quiet” and “forested” changed in sign and significance. This supports the application of travel cost models at the urban scale, but suggests that site choice criteria may be sensitive to variables not included in the study.  相似文献   
67.
During the last weeks before each quarterly expiration of Standard & Poor's (S&P) 500 futures, the bulk of trading volume begins to shift away from the next‐to‐expire (nearby or lead) contract toward the second‐to‐expire (next out) contract. At some point, the exchange formally redesignates the next out as the new lead contract, and the next out replaces the nearby in the futures pit location designated for the lead contract. This event invariably results in a dramatic increase (decrease) in trading activity in the next out (nearby) contract. This shift in relative trading volumes is due to the microstructure of the futures exchange rather than new information or underlying volatility conditions. The event thus offers us an opportunity to examine how volatility responds to noninformation‐based exogenous changes in volume. This study examines the volatility behavior of nearby and next out S&P 500 futures contracts on the 10 days surrounding quarterly redesignation of the lead contract. Our model measures possible changes in (a) the level of volatility and/or (b) the association between volume and volatility after redesignation of the lead contract. Results indicate that when we account for the association between volume and volatility, the higher volume lead contract consistently experiences a lower level of volatility. This outcome supports the view that the larger population of liquidity providers who trade the more active lead contract fosters greater market depth and lower volatility. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21:1119–1149, 2001  相似文献   
68.
We defend the precautionary principle against five common charges, namely that it is ill-defined, absolutist, and a value judgement, increases risk-taking, and marginalizes science. We argue, first, that the precautionary principle is, in principle, no more vague or ill-defined than other decision principles and like them it can be made precise through elaboration and practice. Second, the precautionary principle need not be absolutist in the way that has been claimed. A way to avoid this is through combining the precautionary principle with a specification of the degree of scientific evidence required to trigger precaution, and/or with some version of the de minimis rule. Third, the precautionary principle does not lead to increased risk-taking, unless the framing is too narrow, and then the same problem applies to other decision rules as well. Fourth, the precautionary principle is indeed value-based, but only to the same extent as other decision rules. Fifth and last, the precautionary principle is not unscientific other than in the weak sense of not being exclusively based on science. In that sense all decision rules are unscientific.  相似文献   
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