全文获取类型
收费全文 | 1146篇 |
免费 | 30篇 |
专业分类
财政金融 | 245篇 |
工业经济 | 93篇 |
计划管理 | 218篇 |
经济学 | 205篇 |
综合类 | 4篇 |
运输经济 | 16篇 |
旅游经济 | 36篇 |
贸易经济 | 206篇 |
农业经济 | 69篇 |
经济概况 | 84篇 |
出版年
2023年 | 6篇 |
2021年 | 8篇 |
2020年 | 14篇 |
2019年 | 26篇 |
2018年 | 21篇 |
2017年 | 22篇 |
2016年 | 36篇 |
2015年 | 13篇 |
2014年 | 36篇 |
2013年 | 182篇 |
2012年 | 31篇 |
2011年 | 49篇 |
2010年 | 44篇 |
2009年 | 48篇 |
2008年 | 36篇 |
2007年 | 38篇 |
2006年 | 32篇 |
2005年 | 21篇 |
2004年 | 34篇 |
2003年 | 31篇 |
2002年 | 43篇 |
2001年 | 21篇 |
2000年 | 26篇 |
1999年 | 24篇 |
1998年 | 23篇 |
1997年 | 20篇 |
1996年 | 20篇 |
1995年 | 19篇 |
1994年 | 23篇 |
1993年 | 18篇 |
1992年 | 18篇 |
1991年 | 12篇 |
1990年 | 13篇 |
1989年 | 9篇 |
1988年 | 9篇 |
1987年 | 18篇 |
1986年 | 21篇 |
1985年 | 17篇 |
1984年 | 10篇 |
1983年 | 10篇 |
1982年 | 7篇 |
1981年 | 6篇 |
1980年 | 7篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 6篇 |
1975年 | 7篇 |
1974年 | 6篇 |
1973年 | 4篇 |
1970年 | 3篇 |
排序方式: 共有1176条查询结果,搜索用时 1 毫秒
21.
“一旦拥有了所有的技术和资源,那么是时候开设一家招牌商店了。“十年前.世纪招牌制作公司(美国新墨西哥,阿尔伯克基州)在圣菲的一个小村庄里进行了改造.并于1932年进行了一次大规模的整修,具备了一个完整的环保图形软件包,其中包括,建筑证明、房间号码牌、指路标志,以及其它的一些圈形设施等。 相似文献
22.
Many companies aspire to be players in the global marketplace, but the challenges to succeed are now greater than ever. Steve Tappin and Andrew Cave spoke with the CEOs of strongly globalized companies to learn their secrets. 相似文献
23.
DOES EDUCATION LOAN DEBT INFLUENCE HOUSEHOLD FINANCIAL DISTRESS? AN ASSESSMENT USING THE 2007–2009 SURVEY OF CONSUMER FINANCES PANEL 下载免费PDF全文
Families with student loans in 2007 have higher levels of financial distress than families without such loans, and these families also transitioned to financial distress at higher rates during the early stages of the Great Recession. This correlation persists once we control for a host of other demographic, work‐status, and household balance sheet measures. Families with an average level of student loans were 3.1 percentage points more likely to be 60 days late paying bills and 3 percentage points more likely to be denied credit. Families with other types of consumer debt were no more or less likely to be financially distressed. (JEL D14, H81, I22) 相似文献
24.
J. Maervoet N. Bossers R. P. Borge Jr S. Thompson Hilpert A. van Engen 《Journal of medical economics》2013,16(11):1221-1234
AbstractObjectives: Atrial fibrillation (AF) is the most common arrhythmia and a major marker of ischemic stroke risk. Early detection is crucial and, once diagnosed, anticoagulation therapy can be initiated to reduce stroke risk. The aim of this study was to assess the cost-effectiveness of employing an insertable cardiac monitor (ICM), BIOMONITOR, for the detection of AF compared to standard of care (SoC) ECG and Holter monitoring in patients with cryptogenic stroke, that is, stroke of unknown origin and where paroxysmal, silent AF is suspected.Materials and methods: A Markov model was developed which consisted of five main health states reflecting the potential lifetime evolution of the AF disease: post cryptogenic stroke (index event), subsequent mild, moderate and severe stroke, and death. Sub-states were included to track a patient’s AF diagnostic status and the use of antiplatelet or anticoagulant therapy. AF detection was assumed to result in a treatment switch from aspirin to anticoagulants, except among those with a history of major bleeding. Detection yield and accuracy, clinical actions and treatment effects were derived from the literature and validated by an expert clinician. All relevant costs from a US Medicare perspective were included.Results and conclusions: An ICM-based strategy was associated with a reduction of 37 secondary ischemic strokes per 1000 patients monitored compared with SoC. Total per-patient costs with an ICM were higher (US$90,052 vs. US$85,157) although stroke-related costs were reduced. The use of an ICM was associated with a base-case incremental cost-effectiveness ratio of US$18,487 per life year gained compared with SoC and US$25,098 per quality-adjusted life year gained, below established willingness-to-pay thresholds. The conclusions were found to be robust over a range of input values. From a US Medicare perspective the use of a BIOMONITOR ICM represents a cost-effective diagnostic strategy for patients with cryptogenic stroke and suspected AF. 相似文献
25.
Philip B. Thompson 《Contemporary economic policy》2002,20(1):50-59
Arguments about the existence of the so-called energy efficiency gap are typically based on evaluations of efficiency measures as investments whose end result is to reduce the cost of providing a given level of energy services. This article demonstrates that the investment approach tends to undervalue energy efficiency improvements because it omits the increase in utility that results from the consumer's substitution of energy services for other goods. The substitution occurs because the efficiency measure reduces the marginal cost (implicit price) of energy services. Sample calculations based on a Cobb-Douglas utility function are used to illustrate the potential size of the undervaluation of efficiency investments. 相似文献
26.
27.
Aims: Depression is the most frequent comorbidity reported among patients with rheumatoid arthritis (RA). Comorbid depression negatively impacts RA patients’ health-related quality-of-life, physical function, mental function, mortality, and experience of pain and symptom severity. The objective of this study was to assess healthcare utilization, expenditures, and work productivity among patients with RA with or without depression.Materials and methods: Data from adult patients who had at least two visits each related to RA and depression over a 1-year period were extracted from the Truven Health MarketScan research databases. Outcomes comprised healthcare resource utilization, work productivity loss, and direct healthcare costs comparing patients with RA with depression (n?=?3,478) vs patients with RA without depression (n?=?43,222).Results: Patients with RA and depression had a significantly greater relative risk of hospitalization and number of all-cause and RA-related hospitalizations, utilization of emergency services, days spent in the hospital, physician visits, and RA-related surgeries compared with RA patients without depression. Patients with RA and depression had a higher risk of and experienced more events and days of short-term disability compared with patients without depression. The incremental adjusted annual all-cause and RA-related direct costs were $8,488 (95% CI = $6,793–$10,223) and $578 (95% CI = –$98–$1,243), respectively, when comparing patients with RA and depression vs RA only.Limitations: The current analysis is subject to the known limitations of retrospective studies based on administrative claims data.Conclusions: This study suggested increased healthcare utilization, work productivity loss, and economic burden among RA patients due to comorbid depression. These findings emphasize the importance of managing depression and including depression as a factor when devising treatment algorithms for patients with RA. 相似文献
28.
29.
Abstract Research on the political activity of outdoor recreationists has focused primarily on their associational affiliations and concern for the environment. This article reviews literature on theories of collective behavior, recreation motivations, and environmental concern. The study considers outdoor recreation as a social movement and investigates relationships between incentives for voluntary membership in environmental and outdoor recreation associations, motivations for participation in outdoor recreation activities, and environmental concern. Members of associations were found to be significantly different than nonmembers on several variables including value for outdoor recreation, incentives for association membership, intellectual motivations for outdoor recreation, environmental concern, education level, and age. Results suggest that association efforts to obtain instrumental benefits, or public goods that accrue to all of society, are a primary incentive for outdoor recreationists to join voluntary associations. A common thread of intellectual pursuit distinguished members from nonmembers, suggesting that intellectual benefits may help define the relationship between outdoor recreation and associational affiliation behaviors. 相似文献
30.
This paper analyzes television commercials (TVCs) launched by Korea Tourism Organization (KTO) from 1999 to 2012. By repeating shots of traditional and Korean popular (k-pop) culture, high-tech machinery, and sportsmanship, it is fair to say that Korean tourism TVCs both reflected and fueled the fad a target audience has for Korea. Hence the commercials not only promoted tourism, they were also projecting national power in general and cultural power in particular. It is surmised that through power projection the TVCs intend to create a country halo effect so that the country’s products and services may enjoy an aspired added value. 相似文献