全文获取类型
收费全文 | 557篇 |
免费 | 15篇 |
专业分类
财政金融 | 86篇 |
工业经济 | 48篇 |
计划管理 | 104篇 |
经济学 | 125篇 |
综合类 | 10篇 |
运输经济 | 3篇 |
旅游经济 | 14篇 |
贸易经济 | 122篇 |
农业经济 | 20篇 |
经济概况 | 36篇 |
信息产业经济 | 1篇 |
邮电经济 | 3篇 |
出版年
2023年 | 7篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 11篇 |
2019年 | 8篇 |
2018年 | 9篇 |
2017年 | 9篇 |
2016年 | 17篇 |
2015年 | 12篇 |
2014年 | 19篇 |
2013年 | 67篇 |
2012年 | 23篇 |
2011年 | 14篇 |
2010年 | 22篇 |
2009年 | 26篇 |
2008年 | 20篇 |
2007年 | 16篇 |
2006年 | 12篇 |
2005年 | 9篇 |
2003年 | 11篇 |
2002年 | 12篇 |
2001年 | 12篇 |
2000年 | 16篇 |
1999年 | 10篇 |
1998年 | 10篇 |
1997年 | 7篇 |
1996年 | 5篇 |
1995年 | 11篇 |
1994年 | 7篇 |
1993年 | 7篇 |
1992年 | 6篇 |
1991年 | 5篇 |
1990年 | 6篇 |
1989年 | 7篇 |
1988年 | 8篇 |
1987年 | 6篇 |
1986年 | 6篇 |
1985年 | 10篇 |
1984年 | 10篇 |
1983年 | 17篇 |
1982年 | 8篇 |
1981年 | 9篇 |
1980年 | 9篇 |
1978年 | 4篇 |
1977年 | 6篇 |
1976年 | 4篇 |
1975年 | 6篇 |
1973年 | 5篇 |
1971年 | 3篇 |
1966年 | 3篇 |
排序方式: 共有572条查询结果,搜索用时 15 毫秒
21.
Leonard Mizzi 《Food Policy》1995,20(6)
Food and nutrition policy in Malta was officially endorsed by Government in the late 1980s. The urgency stemmed from the increasingly preoccupying health situation of the Maltese population characterized by the higher rates of cardiovascular diseases and neoplasms. Although a small island in the central Mediterranean, Malta does not have a diet that is characteristic of the rest of the Mediterranean region. The main aim of this paper is to outline the main characteristics of Maltese food consumption and the constraints encountered in the process of implementing the food and nutrition policy. The final section provides some recommendations that could also be considered in other Mediterranean countries that are in the process of designing or implementing similar policies. On the eve of the 21st century and in light of Malta's eventual accession in the European Union, several fundamental measures still need to be introduced and enforced, the most important being those concerning food safety and quality. 相似文献
22.
23.
Leonard L. Berry and Neeli Bendapudi When customers lack the expertise to judge a company's offerings, they naturally turn detective, scrutinizing people, facilities, and processes for evidence of quality. The Mayo Clinic understands this and carefully manages that evidence to convey a simple, consistent message: The needs of the patient come first. From the way it hires and trains employees to the way it designs its facilities and approaches its care, the Mayo Clinic provides patients and their families concrete evidence of its strengths and values, an approach that has allowed it to build what is arguably the most powerful brand in health care. Marketing professors Leonard Berry and Neeli Bendapudi conducted a five-month study of evidence management at the Mayo Clinic. They interviewed more than 1,000 patients and employees, observed hundreds of doctor visits, traveled in the Mayo helicopter, and stayed in the organization's many hospitals. Their experiences led them to identify best practices applicable to just about any company, in particular those that sell intangible or technically complex products. Essentially, the authors say, companies need to determine what story they want to tell, then ensure that their employees and facilities consistently show customers evidence of that story. At Mayo, the evidence falls into three categories: people, collaboration, and tangibles. The clinic systematically hires people who espouse its values, and its incentive and reward systems promote collaborative care focused on the patient's needs. The physical environment is explicitly designed for its intended effect on the patient experience. In almost every interaction, an organization's message comes through. "Patients first," the Mayo Clinic's message, is not the only story a medical organization could tell, but the way in which Mayo manages evidence to communicate this message is an example to be followed. 相似文献
24.
Earnings Preannouncement Strategies 总被引:2,自引:1,他引:1
Soffer Leonard C. Thiagarajan S. Ramu Walther Beverly R. 《Review of Accounting Studies》2000,5(1):5-26
We examine the disclosure strategies managers follow when theyd preannounce quarterly earnings shortly before formal earnings announcements. We document that managers with bad news release essentially all of their news at the preannouncement date, while managers with good news only release about half of their news. Controlling for the combined news released at the preannouncement and earnings announcement dates, firms with negative earnings announcement surprises have significantly lower excess returns for the period from just before the preannouncement to just after the earnings announcement. This finding is consistent with the observed disclosure strategies whereby managers attempt to avoid negative earnings announcement surprises, and suggests that how information is presented can affect the market's reaction to that information. 相似文献
25.
This paper considers the estimation of the expected rate of return on a set of risky assets. The approach to estimation focuses on the covariance matrix for the returns. The structure in the covariance matrix determines shared information which is useful in estimating the mean return for each asset. An empirical Bayes estimator is developed using the covariance structure of the returns distribution. The estimator is an improvement on the maximum likelihood and Bayes–Stein estimators in terms of mean squared error. The effect of reduced estimation error on accumulated wealth is analyzed for the portfolio choice model with constant relative risk aversion utility. 相似文献
26.
Donald M. Jackson Robert F. Krampf Leonard J. Konopa 《Industrial Marketing Management》1982,11(4):263-268
This article is concerned with the length of channels utilized to market industrial products. Several marketing scholars have proposed that the appropriate channel structure is a function of conditions associated with the market for the product, the nature of the product itself, and characteristics of the producer and middlemen. By means of a survey of industrial product manufacturers, this study identified six characteristics of middlemen, industrial markets, and industrial customers that appear to be significant influences on the length of channels used to distribute industrial products. 相似文献
27.
Although the academic interest in ethical mutual fund performance has developed steadily, the evidence to date is mainly sample-specific.
To tackle this critique, new research should extend to unexplored countries. Using this as a motivation, we examine the performance
and risk sensitivities of Canadian ethical mutual funds vis-à-vis their conventional peers. In order to overcome the methodological
deficiencies most prior papers suffered from, we use performance measurement approaches in the spirit of Carhart (1997, Journal of Finance 52(1): 57–82) and Ferson and Schadt (1996, Journal of Finance 51(2): 425–461). In doing so, we investigate the aggregated performance and investment style of ethical and conventional mutual funds and allow for time variation in the funds’ systematic risk. Our␣Canadian
evidence supports the conjecture that any␣performance differential between ethical mutual funds and their conventional peers
is statistically insignificant.
相似文献
28.
The notion of a mixed-strategy Nash equilibrium suffers from three inherent difficulties. First, given the equilibrium strategies of other players, there are many best replies. Second, the equilibrium is unstable. Third, comparative statics results are counterintuitive. We demonstrate that these difficulties all have their origin in von Neumann and Morgenstern′s expected utility. In contrast, players with "quadratic utility" have unique best replies and the Nash equilibrium appears to yield intuitive comparative statics results. Journal of Economic Literature Classification Number: C72. 相似文献
29.
Christa Cuchiero Walter Schachermayer Ting‐Kam Leonard Wong 《Mathematical Finance》2019,29(3):773-803
Cover's celebrated theorem states that the long‐run yield of a properly chosen “universal” portfolio is almost as good as that of the best retrospectively chosen constant rebalanced portfolio. The “universality” refers to the fact that this result is model‐free, that is, not dependent on an underlying stochastic process. We extend Cover's theorem to the setting of stochastic portfolio theory: the market portfolio is taken as the numéraire, and the rebalancing rule need not be constant anymore but may depend on the current state of the stock market. By fixing a stochastic model of the stock market this model‐free result is complemented by a comparison with the numéraire portfolio. Roughly speaking, under appropriate assumptions the asymptotic growth rate coincides for the three approaches mentioned in the title of this paper. We present results in both discrete and continuous time. 相似文献
30.
Leonard J. Paas Sara Dolnicar Logi Karlsson 《International Journal of Research in Marketing》2018,35(2):258-269
Instructional Manipulation Checks (IMCs) assess respondent behavior by, for example, asking participants not to answer a trick question. We find IMCs can be used to detect problematic response behavior in longitudinal surveys. This is important because a Latent Class Analysis based on IMC-failure in the two reported studies reveals that between 9% and 12% of respondents can be labelled Inattentive Stayers at the first survey-wave and between 13% and 17% at the third wave. The tendency of Inattentive Stayers to remain in the panel is particularly relevant for online panel services such as MTurk, with workers participating in many surveys over longer time-periods. We find IMC-failure to be mitigated by a warning to respondents that their attention will be checked early in the survey, but not by repeated exposure to IMCs, or a timer leaving questions on the screen longer. Respondent personality also plays a role in IMC-failure, which implies persistency of undesirable respondent behavior. 相似文献