全文获取类型
收费全文 | 9066篇 |
免费 | 332篇 |
国内免费 | 51篇 |
专业分类
财政金融 | 1171篇 |
工业经济 | 594篇 |
计划管理 | 1576篇 |
经济学 | 1606篇 |
综合类 | 943篇 |
运输经济 | 102篇 |
旅游经济 | 327篇 |
贸易经济 | 1391篇 |
农业经济 | 348篇 |
经济概况 | 1380篇 |
信息产业经济 | 1篇 |
邮电经济 | 10篇 |
出版年
2024年 | 16篇 |
2023年 | 66篇 |
2022年 | 83篇 |
2021年 | 171篇 |
2020年 | 180篇 |
2019年 | 272篇 |
2018年 | 265篇 |
2017年 | 282篇 |
2016年 | 224篇 |
2015年 | 258篇 |
2014年 | 358篇 |
2013年 | 815篇 |
2012年 | 640篇 |
2011年 | 703篇 |
2010年 | 685篇 |
2009年 | 600篇 |
2008年 | 657篇 |
2007年 | 647篇 |
2006年 | 659篇 |
2005年 | 552篇 |
2004年 | 231篇 |
2003年 | 197篇 |
2002年 | 176篇 |
2001年 | 182篇 |
2000年 | 99篇 |
1999年 | 75篇 |
1998年 | 39篇 |
1997年 | 35篇 |
1996年 | 35篇 |
1995年 | 26篇 |
1994年 | 26篇 |
1993年 | 29篇 |
1992年 | 16篇 |
1991年 | 19篇 |
1990年 | 12篇 |
1989年 | 11篇 |
1988年 | 15篇 |
1987年 | 11篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 10篇 |
1983年 | 9篇 |
1981年 | 9篇 |
1980年 | 7篇 |
1979年 | 9篇 |
1978年 | 4篇 |
1977年 | 6篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1974年 | 3篇 |
排序方式: 共有9449条查询结果,搜索用时 15 毫秒
1.
Sequels have become a profitable strategy in the U.S. motion picture industry because of their strong name recognition. However, while the established positioning of a sequel may help insulate it from competing firms' advertising messages, its familiarity may cause moviegoers to be more easily satiated with advertising from the sequel. Therefore, this study examines how sequels differ from original concept movies in terms of their ad effectiveness. We focus our analysis on pre-launch periods, given these periods' importance in shaping the financial outcomes of motion pictures. We consider the weekly online search volume of a movie as a measure of consumer interest in it, and thus as an intermediate response to pre-launch advertising. We then develop a model that assumes ad effectiveness can decline, due to copy and repetition wearout, and increase, due to forgetting, over time. We find that copy wearout is greater for original movies, while repetition wearout and forgetting are greater for sequels. These findings suggest that sequels should allocate more in early pre-launch periods and less immediately before release, relative to originals, to maximize pre-launch consumer interest. 相似文献
2.
Do local partners' network attributes affect the survival of high-tech international joint ventures (IJV)? How does the effect of network attributes vary in different subnational institutional environments? While the classic economic explanation for IJV formation and subsequent performance draws from the resource-based view (RBV), we add the relational dimension to explain that IJV survival may be affected by local partners’ relation-specific assets within the local network. We test the effect of the local partners’ network attributes as calculated by UCINET (centrality, network status, and structural hole position) on IJV survival. We additionally assert that this relationship is moderated by subnational institutional heterogeneity. Using our sample of 125 IJV dyadic pairs of US multinational enterprises (MNEs) operating in high-tech industries and their local partners in China, we find partial support for our claims. 相似文献
3.
新冠疫情以来,人们的健康意识觉醒,体育产业越来越受重视,本文通过对疫情期间体育产业受到的影响进行分析,从体育消费、体育产品中小企业、体育赛事几个方面阐述了疫情以来体育产业受到的阻碍。凡事都有两面性,疫情也为体育产业带来了新的机遇,"线上+线下"融合、新兴产业的崛起、人们健康意识的加强都因为疫情带来了新的发展动力。在后疫情时代,政府应该推出新的政策与措施鼓励体育产业发展,市场则应该抓住机遇实现体育产业的供给侧改革,通过与新兴产业、互联网等的结合,推动体育产业的转型升级。 相似文献
4.
Sung Soo Lim 《Review of Development Economics》2019,23(4):1520-1539
There is ample evidence that distance has a strong negative effect on migration. Despite its significance in migration decisions, scholars rarely explore the migration distance effect deeper than the first level of interpretation derived from the simple neoclassical theory of migration. This study revisits the migration distance effect in the spirit of Knightian distinction between risk and uncertainty. To this end, this study attempts to construct estimates of the risk premium migrants are willing to pay to avoid the risk associated with migration distance. The results show that the magnitude of the distance effect is not rationalized by risk aversion in the Arrow–Pratt sense (Arrow, 1965, The theory of risk aversion, Yrjo Jahnssonin Saatio, Helsinki, Finland, 90; Pratt, 1964, Econometrica, 32, 122). In particular, the risk premium demanded by distant rural residents is unjustifiably higher compared with that of those living closer to urban areas in their migration decisions. The results suggest that the migration distance effect is analogous to the equity home bias puzzle and the Ellsberg paradox in that the assumption of subjective expected utility can lead to seemingly irrational human behaviors. Some of the findings in this study shed light on the role of subjective aspects such as perception, confidence, and pessimism in migration decisions, which have been neglected in the literature. 相似文献
5.
随着我国工业化进程的不断推进,在提升我国经济发展速度的同时,也带来了巨大的自然环境污染现象,特别是受到传统管理模式的影响,行业生产过程中缺乏环境保护意识,不仅造成了生产资源的大量浪费还在一定程度上影响了自然生态系统的可持续发展,对我国经济和自然生态均造成了极大损害.随着我国科技技术的不断发展和推进以及环保意识的增强,国家有关部门加大了环境保护管理的工作力度.本文主要分析污染源在线监测技术相关内容以及应用重要性,在分析存在的现状问题基础之上,开展污染源在线监测优化策略的探析,以期为我国环境保护工作提供一定参考价值. 相似文献
6.
Open Economies Review - A number of researchers have found that the rate of exchange rate pass-through (ERPT) to domestic prices has declined substantially over the last few decades. We revisit... 相似文献
7.
Journal of Business Ethics - We seek to understand how third-party observers respond to allegations of sexual transgressions, whether their responses vary and if so why, how they determine... 相似文献
8.
Consequences of a green image of drone food delivery services: The moderating role of gender and age
Drone food delivery services play a significant role in protecting the environment, because the services are operated by batteries that can be charged with electricity. Therefore, this study tried to examine a green image in the context of drone food delivery services. More specifically, this study proposed that a green image of drone food delivery services plays an important role in the formation of attitude toward using the services. In addition, it was hypothesized that the attitude has a positive influence on behavioral intentions including intentions to use, word‐of‐mouth intentions, and willingness to pay more. Lastly, the moderating role of gender and age was proposed during the theory‐building process. A theoretical model, which included 12 hypotheses, was developed and tested using a total of 427 samples collected in Korea. The data analysis results showed that a green image of drone food delivery services has a positive influence on attitude toward using the services, which in turn positively affects three subdimensions of behavioral intentions. Furthermore, gender and age played partly as a moderator. The current paper was the first to study the green image of drone food delivery services, so the findings of this study mean a lot to the theoretical aspect. 相似文献
9.
Bongkyun Kim 《Southern economic journal》2019,85(3):766-795
This article examines the effect of air quality information on immigration and emigration of households in California counties by measuring the change in the number of air quality alert days. Based on panel data for 2000–2014, I find evidence suggesting that more frequent air quality alerts reduce the rate of population growth in a county by decreasing immigration of households. This is driven by “Unhealthy” air alerts, which signals weaker air quality than “Unhealthy for Sensitive Groups.” The negative impacts on immigration are larger for high household income counties and are strongest when there is a sharp increase in the number of air quality alerts. 相似文献
10.
Firms use active political strategies not only to mitigate uncertainty emanating from legislative activity, but also to enhance their growth opportunities. We find that a firm's systematic risk (beta) can be hedged away by employing various political strategies involving the presence of former politicians on corporate boards of directors, contributions to political campaigns, and corporate lobbying activities. The hedging effect is greater when firms operate in more uncertain industries. In addition, active political strategies are associated with greater firm heterogeneity and make real options more value relevant as potential drivers of competitive advantages in uncertain environments. 相似文献