全文获取类型
收费全文 | 31473篇 |
免费 | 818篇 |
专业分类
财政金融 | 5707篇 |
工业经济 | 2208篇 |
计划管理 | 5431篇 |
经济学 | 7640篇 |
综合类 | 369篇 |
运输经济 | 225篇 |
旅游经济 | 454篇 |
贸易经济 | 4741篇 |
农业经济 | 1550篇 |
经济概况 | 3833篇 |
信息产业经济 | 3篇 |
邮电经济 | 130篇 |
出版年
2021年 | 193篇 |
2020年 | 380篇 |
2019年 | 593篇 |
2018年 | 658篇 |
2017年 | 723篇 |
2016年 | 700篇 |
2015年 | 457篇 |
2014年 | 763篇 |
2013年 | 3255篇 |
2012年 | 1027篇 |
2011年 | 1086篇 |
2010年 | 919篇 |
2009年 | 1096篇 |
2008年 | 951篇 |
2007年 | 849篇 |
2006年 | 796篇 |
2005年 | 731篇 |
2004年 | 642篇 |
2003年 | 658篇 |
2002年 | 584篇 |
2001年 | 663篇 |
2000年 | 604篇 |
1999年 | 566篇 |
1998年 | 582篇 |
1997年 | 561篇 |
1996年 | 547篇 |
1995年 | 492篇 |
1994年 | 502篇 |
1993年 | 505篇 |
1992年 | 530篇 |
1991年 | 524篇 |
1990年 | 489篇 |
1989年 | 375篇 |
1988年 | 379篇 |
1987年 | 388篇 |
1986年 | 384篇 |
1985年 | 517篇 |
1984年 | 509篇 |
1983年 | 478篇 |
1982年 | 422篇 |
1981年 | 447篇 |
1980年 | 413篇 |
1979年 | 431篇 |
1978年 | 341篇 |
1977年 | 303篇 |
1976年 | 294篇 |
1975年 | 241篇 |
1974年 | 229篇 |
1973年 | 227篇 |
1972年 | 161篇 |
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
81.
Poverty is a widely researched topic in economics. However, despite growing research on the economic lives of lesbians and gay men in the United States since the mid 1990s, very little is known about poverty in same-sex couple households. This study uses American Community Survey data from 2010 to 2014 to calculate poverty rates for households headed by different-sex versus same-sex couples. Comparing households with similar characteristics, the results show that those headed by same-sex couples are more likely to be in poverty than those headed by different-sex married couples. Despite that overall disadvantage, a decomposition of the poverty risk shows that same-sex couples are protected from poverty by their higher levels of education and labor force participation, and their lower probability of having a child in the home. Lastly, the role of gender – above and beyond sexual orientation – is clear in the greater vulnerability to poverty for lesbian couples. 相似文献
82.
Heather M. Rozjabek Craig I. Coleman Veronica Ashton François Laliberté Paul Oyefesobi Dominique Lejeune 《Journal of medical economics》2019,22(8):751-759
Objective: To assess long-term healthcare costs related to ischemic stroke and systemic embolism (stroke/SE) and major bleeding (MB) events in patients with non-valvular atrial fibrillation (NVAF) treated with non-vitamin K antagonist oral anticoagulants (NOACs).Materials and methods: Optum’s Clinformatics Data Mart database from 1/2009–12/2016 was analyzed. Adult patients with ≥1 stroke/SE hospitalization (index date) were matched 1:1 to patients without stroke/SE (random index date), based on propensity scores. Patients with an MB event were matched to patients without MB. All patients had an NOAC dispensing overlapping index date, ≥12?months of eligibility pre-index date, and ≥1 NVAF diagnosis. The observation period spanned from the index date until the earliest date of death, switch to warfarin, end of insurance coverage, or end of data availability. Mean costs were evaluated: (1) per-patient-per-year (PPPY) and (2) at 1, 2, 3, and 4?years using Lin's method.Results: The cost differences were, respectively, $48,807 and $28,298 PPPY for NOAC users with stroke/SE (n?=?1,340) and those with MB (n?=?3,774) events compared to controls. Cost differences of patients with vs without stroke/SE were $49,876, $51,627, $57,822, and $60,691 at 1, 2, 3, and 4?years post-index, respectively (p?0.001). These cost differences were $31,292, $35,658, $44,069, and $47,022 for patients with vs without MB after 1, 2, 3, and 4?years post-index, respectively (p?0.001).Limitations: Limitations include unobserved confounders, coding and/or billing inaccuracies, limited sample sizes over longer follow-up, and the under-reporting of mortality for deaths occurring after 2011.Conclusions: The incremental healthcare costs incurred by patients with vs without stroke/SE was nearly twice as high as those of patients with vs without MB. Moreover, each additional year up to 4?years after the first event was associated with an incremental cost for patients with a stroke/SE or MB event compared to those without an event. 相似文献
83.
We commemorate the 50th anniversary of Ball and Brown [1968] by chronicling its impact on capital market research in accounting. We trace the evolution of various research paths that post–Ball and Brown [1968] researchers took as they sought to build on the foundation laid by Ball and Brown [1968] to create a body of research on the usefulness, timeliness, and other properties of accounting numbers. We discuss how those paths often link back to the groundwork laid and questions originally posed in Ball and Brown [1968]. 相似文献
84.
Elodie Gentina L. J. Shrum Tina M. Lowrey Scott J. Vitell Gregory M. Rose 《Journal of Business Ethics》2018,150(4):1173-1186
What causes adolescents to develop consumer’ ethical beliefs? Prior research has largely focused on the negative influence of peers and negative patterns of parent–child interactions to explain risky and unethical consumer behaviors. We take a different perspective by focusing on the positive support of parents and peers in adolescent social development. An integrative model is developed that links parental and peer support with adolescents’ self-worth motives, their materialistic tendencies, and their consumer ethical beliefs. In a study of 984 adolescents, we demonstrate support for a sequential mediation model in which peer and parental support is positively related to adolescents’ self-esteem and feelings of power, which are each associated with decreased materialism as a means of compensating for low self-worth. This reduced materialism is, in turn, associated with more ethical consumer beliefs. 相似文献
85.
86.
The impact of climate change on labour demand in the plantation sector: the case of tea production in Sri Lanka 下载免费PDF全文
Rajapaksha P. D. Gunathilaka James C. R. Smart Christopher M. Fleming Syezlin Hasan 《The Australian journal of agricultural and resource economics》2018,62(3):480-500
Limited opportunities for crop switching and lengthy preharvesting periods make the plantation sector particularly vulnerable to climate change. Surprisingly, however, the economic consequences of climate change on plantation crops are seldom analysed. Drawing on a unique primary panel data set from a representative cross section of 35 tea estates in Sri Lanka over the period 2002–2014, this study implements a structural model of estate profit maximisation to estimate the elasticity of labour demand with respect to different components of weather. Results indicate a negative relationship between labour demand and rainfall in the south‐west monsoon, the north‐east monsoon and the second inter‐monsoon. A positive relationship is found between labour demand and rainfall in the first inter‐monsoon. Overall, predicted changes in rainfall by 2050 are anticipated to reduce labour demand by approximately 1,175,000 person‐days per year across Sri Lanka's tea plantation sector. This is likely to have considerable social and welfare implications, particularly for the Indian Tamil women who comprise the majority of the sector's workforce. 相似文献
87.
The distributional effects of a major air regulation in the United State in 2015 were analyzed using Berliant and Strauss Index Numbers, a set of theoretical and empirical equity metrics, and reduced‐form models that estimate the mortality effects of air pollutant emissions and their source contributions. By viewing the effects of pollution on human mortality as an implicit tax, we found progressivity in 54% to 56% of vertical comparisons and inequity in 92% to 94% of horizontal comparisons. The introduction of the proposed policy made 58% of vertical comparisons more progressive and was equitable to 70% of horizontal comparisons. 相似文献
88.
William P. Williams 《Journal of Marketing Management》2018,34(11-12):989-1014
ABSTRACTThis paper details a study of brand-related bullying in a school setting, among children approximately 11–18 years of age during their schooling experience. Defined as ‘repeated oppression, psychological or physical, of a less powerful person by a more powerful one’, authors have found self-reported rates of bullying above 25%. Our goal was to assess the role of brands and branded products in violent peer socialisation through bullying. Depth interviews lasting between 45 and 90 minutes that captured the retrospective reflection of forty-one 18–20-year-old college students were conducted and data were analysed hermeneutically with iterative comparison to discover emerging themes. Our findings suggest branded products were used to maintain existing social hierarchical structures and exclude non-conforming students through both covert and overt violence. We describe the influence strategies used and address strategies for dealing with the ‘unusual’, including the adoption of an alternative aesthetic for clothing selection. 相似文献
89.
Gina Santos Carla S. Marques João J. M. Ferreira 《The International Entrepreneurship and Management Journal》2018,14(4):807-821
This study seeks to identify the antecedents of women’s entrepreneurial orientation (EO) and exploring what possible relationships that may exist between them. The research focuses on women entrepreneurs and non-entrepreneurs in a quantitative perspective whose methodology consisted of the collection of primary data through a survey distributed to women in Portugal. After structural equation modelling was applied, the results suggested that recognition of opportunities influences EO. This influence is expressed both directly and indirectly through training in management and entrepreneurial skills. These findings led to the conclusion that policies promoting training for community members, in general, need to be rethought and policies need to emphasise training in management that enhances entrepreneurial skills, thereby increasing the proliferation of entrepreneurship. Entrepreneurship education and training should be promoted from basic education onwards in order to develop entrepreneurial skills from an early age. Prior to this study, the relationships between opportunity recognition, management training and entrepreneurial skills have never been studied in relation to women. 相似文献
90.