全文获取类型
收费全文 | 14043篇 |
免费 | 383篇 |
专业分类
财政金融 | 2969篇 |
工业经济 | 1064篇 |
计划管理 | 2256篇 |
经济学 | 3018篇 |
综合类 | 152篇 |
运输经济 | 100篇 |
旅游经济 | 222篇 |
贸易经济 | 2250篇 |
农业经济 | 619篇 |
经济概况 | 1762篇 |
信息产业经济 | 2篇 |
邮电经济 | 12篇 |
出版年
2023年 | 73篇 |
2021年 | 84篇 |
2020年 | 191篇 |
2019年 | 252篇 |
2018年 | 335篇 |
2017年 | 332篇 |
2016年 | 306篇 |
2015年 | 203篇 |
2014年 | 326篇 |
2013年 | 1584篇 |
2012年 | 382篇 |
2011年 | 466篇 |
2010年 | 423篇 |
2009年 | 437篇 |
2008年 | 401篇 |
2007年 | 355篇 |
2006年 | 332篇 |
2005年 | 260篇 |
2004年 | 269篇 |
2003年 | 271篇 |
2002年 | 271篇 |
2001年 | 276篇 |
2000年 | 290篇 |
1999年 | 292篇 |
1998年 | 301篇 |
1997年 | 263篇 |
1996年 | 221篇 |
1995年 | 219篇 |
1994年 | 235篇 |
1993年 | 239篇 |
1992年 | 262篇 |
1991年 | 252篇 |
1990年 | 200篇 |
1989年 | 181篇 |
1988年 | 165篇 |
1987年 | 162篇 |
1986年 | 167篇 |
1985年 | 237篇 |
1984年 | 253篇 |
1983年 | 244篇 |
1982年 | 211篇 |
1981年 | 194篇 |
1980年 | 168篇 |
1979年 | 167篇 |
1978年 | 156篇 |
1977年 | 133篇 |
1976年 | 123篇 |
1975年 | 139篇 |
1974年 | 99篇 |
1973年 | 100篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
Philip S. Wells Anthonie W. A. Lensing Lloyd Haskell Bennett Levitan François Laliberté Michael Durkin 《Journal of medical economics》2018,21(6):587-594
Aims: The EINSTEIN-Extension trial (EINSTEIN-EXT) found that continued treatment with rivaroxaban for an additional 6 or 12 months (vs placebo) after 6–12 months of initial anticoagulation significantly reduced the risk of recurrent venous thromboembolism (VTE) with a small non-significant increased risk of major bleeding (none fatal or in critical site). This study aimed to compare total healthcare cost between rivaroxaban and placebo, based on the EINSTEIN-EXT event rates.Methods: Total healthcare cost was calculated as the sum of treatment and clinical event costs from a US managed care perspective. Treatment duration and event rates were obtained from the EINSTEIN-EXT study. Adjustment on treatment duration was made by assuming a 10% non-adherence rate. Drug costs were based on wholesale acquisition costs. Cost estimates for clinical events (i.e. recurrent deep vein thrombosis [DVT], recurrent pulmonary embolism, major bleeding, clinically relevant non-major bleeding) were determined from the literature. Results were examined over a ±20% range of each cost component and over 95% confidence intervals (CIs) of event rate differences in deterministic (one-way) and probabilistic sensitivity analyses (PSA).Results: Total healthcare cost was $1,454 lower for rivaroxaban-treated (vs placebo-treated) patients in the base-case, with a lower clinical event cost fully offsetting drug cost. The cost savings of recurrent DVT alone (–$3,102) was greater than drug cost ($2,723). Total healthcare cost remained lower for rivaroxaban in the majority (73%) of PSA (cost difference [95% CI]?=?–$1,454 [–$2,396, $1,231]).Limitations: This study was conducted over the 1-year observation period of the EINSTEIN-EXT trial, which limited “real-world” applicability and examination of long-term economic impact. Assumptions on drug and clinical event costs were US-based and, thus, not applicable to other healthcare systems.Conclusions: Total healthcare costs were estimated to be lower for patients continuing rivaroxaban therapy compared to those receiving placebo in VTE patients who had completed 6–12 months of VTE treatment. 相似文献
12.
13.
The study reported in this paper investigated the determinants of fair trade (FT) product purchase intention among Dutch consumers according to the extended Theory of Planned Behaviour and determined whether the effects of those determinants differ between male and female consumers. To test the various research hypotheses, an online survey with 499 respondents from a Dutch research panel was employed. Results of the multi-group analysis using a structural equation modelling approach reveal that FT product purchase intention of both male and female consumers are predicated on moral obligation and self-identity. The impact of subjective norm on purchase intention is statistically significant for male consumers only. Analyses reveal that, indeed, the impact of subjective norm on FT product purchase intention is moderated by consumers’ gender. 相似文献
14.
David S.A. Guttormsen Anne Marie Francesco Malcolm K. Chapman 《Scandinavian Journal of Management》2018,34(2):117-128
This article advances the understanding of expatriate failure, which remains a contested social phenomenon in international work life as well as scholarly research. The study challenges the definition of expatriate failure and its inherent biases, i.e., the epistemological primacy of the firm level and the failure/success binary. We argue that this qualitative study of 51 Scandinavian expatriates in Hong Kong can contribute to advancing theory on the expatriate failure concept by asking individual expatriates what constitutes failure to them. By applying social constructionist and social anthropological ideas to the expatriate failure concept debate, we develop the internationality thesis which demonstrates a discrepancy between the expatriates’ perceptions of successful international assignments and the actual nature of their lived lives; many expatriates desire to enrich their lives through experiencing an international/intercultural and adventurous lifestyle, but, in fact, living lives with limited intercultural exposure and interaction. We conclude by proposing a reconceptualisation of expatriate failure in terms of offering both a new definition and approach to researching expatriate failure in which time/duration, context, and geographical location need to be taken into account. We believe the new approach can overcome some of the empirical unsoundness of mainstream definitions. 相似文献
15.
Motor carrier safety is an important concern of shippers, carriers, policy makers, consignees, insurance providers, and the motoring public. One aspect of carrier safety that has garnered substantial attention is whether carriers making greater use of owner–operators are more or less safe vis‐à‐vis carriers making greater use of employee drivers. Currently, conflicting theoretical predictions exist regarding the direction of this relationship. In this article, we offer a reconciliation of the alternative theoretical predictions by developing a coherent theory that merges sociological rational choice theory and theory regarding motor carrier safety. We subject our theory to empirical testing by fitting a series of seemingly unrelated regression models to a vector of safety measures tracked as part of the Federal Motor Carrier Safety Administration's Compliance, Safety, and Accountability program. Our results are consistent with our proposed theory of owner—operator safety and provide meaningful theoretical and managerial implications and directions for future research. 相似文献
16.
Javier Carbonell Antonio Sánchez-Esguevillas Belén Carro 《Technology Analysis & Strategic Management》2018,30(1):113-129
This paper considers the Web as a big data container that can be used by Technology Observatories and administrations to track emerging issues and more specifically emerging technologies. It considers information that is available on the Internet for free from different sources, and proposes a framework that can be useful to characterise them and to detect patterns of dissemination. This framework is made up of 30 metrics obtained from different kinds of sources (general web, patents, scholars?…). Some of them are obtained directly as the number of hits retrieved by queries on a search engine, and other ones calculated by means of ratios. This paper contains the development of a complete case that utilises this framework to characterise emerging technologies included in the well-known Hype Cycle for Emerging Technologies, in this case the 2015 release1 and to analyze patterns of dissemination of these technologies on the Internet. 相似文献
17.
This paper uses a reduced‐form approach to derive a closed‐form pricing formula for defaultable bonds. The authors specify the default hazard rate as an affine function of multiple variables which follow the Lévy jump‐diffusion processes. Because such specification allows greater flexibility in the generation of a valid probability of default, their pricing model should be more accurate than the valuation models in traditional studies, which ignore the jump effects. This paper also proposes a new method for estimating the parameters in a Lévy Jump‐diffusion process. The real data from the Taiwanese bond market are used to illustrate how their model can be applied in practical situations. The authors compare the pricing results for the influential variables with no jump effects, with jump magnitudes following the normal distribution, and with jump magnitudes following the gamma distribution. The results reveal that the predictive ability is the best for the model with the jump components. The valuation model shown in this paper should help portfolio managers more accurately price defaultable bonds and more effectively hedge their portfolio holdings. 相似文献
18.
Small Business Economics - The human personality predicts a wide range of activities and occupational choices—from musical sophistication to entrepreneurial careers. However, which method... 相似文献
19.
Germano Mwabu Mwangi S. Kimenyi Paul K. Kimalu Nancy Nafula Damiano Kulundu Manda 《Revue africaine de developpement》2003,15(1):77-85
Household surveys provide data that is used for identifying and measuring the poverty status of households and individuals. However, carrying out such surveys is expensive, especially in poor developing countries. Thus it is important to make maximum use of the available survey data in developing countries, especially in sub‐Saharan Africa, where such data are expensive to collect and analyse. This paper develops a simple method for using poverty indices derived from survey data for a given year, to predict poverty rates for subsequent periods without having to conduct a new household survey. We illustrate the workings of the method with data from Kenyan household surveys for 1994 and 1997. 相似文献
20.
Previous work shows that establishments with higher proportions of women are more likely to use piece rates but that individual women are less likely to receive performance pay. We present a model in which lower expected tenure and labor force attachment are positively associated with piece rates but are negatively associated with other forms of performance pay. Analysis of the National Longitudinal Survey of Youth (NLSY) confirms that women are more likely to be paid piece rates and simultaneously less likely to be paid commissions and bonuses. 相似文献