首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1783篇
  免费   17篇
财政金融   43篇
工业经济   749篇
计划管理   306篇
经济学   557篇
综合类   1篇
运输经济   4篇
旅游经济   40篇
贸易经济   55篇
农业经济   31篇
经济概况   14篇
  2023年   3篇
  2022年   3篇
  2021年   8篇
  2020年   2篇
  2019年   15篇
  2018年   12篇
  2017年   15篇
  2016年   9篇
  2015年   6篇
  2014年   31篇
  2013年   52篇
  2012年   89篇
  2011年   365篇
  2010年   276篇
  2009年   194篇
  2008年   148篇
  2007年   154篇
  2006年   116篇
  2005年   78篇
  2004年   60篇
  2003年   45篇
  2002年   56篇
  2001年   3篇
  2000年   19篇
  1999年   6篇
  1998年   10篇
  1997年   5篇
  1995年   2篇
  1994年   2篇
  1992年   4篇
  1991年   5篇
  1990年   2篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1979年   2篇
排序方式: 共有1800条查询结果,搜索用时 125 毫秒
1.
We examine factors affecting the adoption of improved cassava varieties of 217 households in the Cauca Department in southwest Colombia. Using DNA fingerprinting through Single Nucleotide Polymorphisms (SNPs), we identified different cultivars in farmers fields. We also used this information to remove possible bias in the adoption model that could have resulted from a misclassification of improved varieties (IVs). As a result, we found that farmers substantially overestimate their use of IVs and there are important differences in the determinants of adoption between farmer self‐identification and DNA fingerprinting. This finding implies that the incorporation of DNA fingerprinting in IV adoption studies is important to ensure the accuracy of future agricultural economic research and the relevance of subsequent policy recommendations.  相似文献   
2.
Marketers are beginning to expand the roles that celebrities play in support of brands. Connections now go beyond the typical endorsement relationship to employing celebrities as Creative Directors. Study 1 demonstrates celebrity Creative Directors, as opposed to merely endorsers, result in increased attitudes toward the advertisement; an effect mediated by consumer perceptions of celebrity expertize and attenuated by skepticism toward advertising. Study 2 further investigates this phenomenon by considering whether it is the title of Creative Director that results in increased attitudes toward the advertisement or if consumers need to be made aware of the responsibilities associated with such a role. Results from Study 2 suggest that merely bestowing a celebrity with the title of Creative Director is not sufficient to enhance attitudes, the duties performed by the celebrity Creative Director must be made explicit.  相似文献   
3.
Social Impact Bonds (SIBs) have emerged in recent years as outcome‐based public‐private partnerships (PPP) for the delivery of welfare services, where the payment to the private operator is linked to the achievement of superior social impact. Since the traditional infrastructure‐based PPP approach seems to have failed to achieve higher level of efficiency and, above all, effectiveness, this paper discusses the extent to which the SIB model can represent a reference point to innovate the PPP model by introducing more focus on outcome achievement and social value generation.  相似文献   
4.
With the changing way people live, communicate, and work, enterprises are striving to shift their existing business model into a “self‐tuning” one. Enterprises are becoming more agile, adaptive, and ambidextrous in order to boost innovation in the current digital transformation era. Nowadays, “digital innovation” is closely associated with Industry 4.0 enablers and smart enterprises. Prior research has shown that while multinational enterprises—across many sectors—have already embraced the aforementioned advancements, their adoption by small and‐medium‐sized enterprises (SMEs) has so far taken place mainly in the manufacturing sector. Thus, based on a sample of 280 self‐tuned smart manufacturing SMEs and having utilized the structural equation modeling (SEM), this study was aimed to investigate how digital innovation is influenced by the three pillars of self‐tuning models—agility, adaptation, and ambidexterity. Our paper has focussed on the digital systems in which SMEs, spurred by networking and open innovation solutions, operate and innovate in response to external triggers, displaying a balance between exploration and exploitation, and a strong agile capacity.  相似文献   
5.
A twenty-year study of the Human Resource (HR) practices–outcome relationship has found that more rigorous methodologies have been adopted over time. However, several problematic features such as cross-sectional, single-informant, and single-level designs continue to be adopted (Bainbridge et al., Human Resource Management, 2016). Responding to calls for increased contextualization of research by investigating the relationship between the location of data collection and the methodological choices of researchers, this study answers the question “How unique are the methodological choices of HR research conducted in Asia?” Applying content analysis to 241 published articles, we compare internal, external, construct and statistical conclusion validity of studies collected in North America (n=66), Europe (n=95) and Asia (n=80, including 57 studies from China). Results show that despite similarities in cross-sectional, single-informant and single-level designs across regions, research conducted in Asia is mainly undertaken via field studies, using subjective outcome measures at the organizational level, following a post-predictive design. In addition, studies from Asia are more recent, and show a shorter time gap between data collection and publication. Theoretical and practical implications embedded in the dynamic context of Asia in general, and China more specifically are discussed.  相似文献   
6.
Marketers continually employ celebrity endorsers as a promotional tactic to enhance brand awareness and increase sales. Frequently, companies will use multiple celebrities to endorse the same product, but feature them individually across a series of concurrent advertisements. While this tactic is often used in practice, its effectiveness has not been thoroughly examined within the academic literature. Our research investigates the value of using multiple concurrent endorsers and the moderating role that celebrity familiarity has on attitudes toward the brand and purchase intentions. Results suggest that using multiple endorsers concurrently is not always the best approach.  相似文献   
7.
Multinational enterprises are, sina qua non, the world's technology producers. In this paper, we explore the concept of technology production by multinationals, focusing on three aspects: (i) technology as a firm-specific advantage, (ii) the costs of technology transfer, and (iii) technology spillovers. In each case, we outline current views and debates in the field about the role played by large multinationals in technology production. Finally, we compare MNEs with small and medium sized enterprises (SMEs) as technology producers. We conclude that SMEs face certain constraints, due to small size and inadequate financing, that raise their costs of technology production and transfer, relative to the costs for MNEs. On the other hand, their flexibility and use of unconventional methods can create successful mini-nationals in niche markets.  相似文献   
8.
9.
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?p?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   
10.
This study proposes brand communities as an effective tool within the integrated marketing communication (IMC) system. The paper utilizes the Brand Concept Map quali-quantitative technique in order to represent and compare mental association texture within one group of non-members of a brand community versus one group of people engaged in the same community. Brand stimulus is Nutella (chocolate cream) which boasts a crowded and lively online brand community: Nutellaville. Results show that brand community is effective in terms of contribution, commonality, and complementarity within the IMC system. In particular, Nutella brand image within the online community participants is composed of some mental associations overlapping other communication tools (commonality), and by new mental associations (complementarity) referred to the brand image dimension named ‘brand as person’ (seductive, popular, reassuring); second, this anthropomorphism effect solves the issue of sense of guilt excited by chocolate (contribution).  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号