全文获取类型
收费全文 | 45478篇 |
免费 | 1773篇 |
国内免费 | 586篇 |
专业分类
财政金融 | 3455篇 |
工业经济 | 2083篇 |
计划管理 | 10995篇 |
经济学 | 7659篇 |
综合类 | 7349篇 |
运输经济 | 416篇 |
旅游经济 | 845篇 |
贸易经济 | 5512篇 |
农业经济 | 3455篇 |
经济概况 | 6068篇 |
出版年
2024年 | 59篇 |
2023年 | 537篇 |
2022年 | 761篇 |
2021年 | 1281篇 |
2020年 | 1533篇 |
2019年 | 907篇 |
2018年 | 789篇 |
2017年 | 902篇 |
2016年 | 1079篇 |
2015年 | 1319篇 |
2014年 | 3437篇 |
2013年 | 3746篇 |
2012年 | 4075篇 |
2011年 | 4999篇 |
2010年 | 3696篇 |
2009年 | 3032篇 |
2008年 | 3062篇 |
2007年 | 2594篇 |
2006年 | 2449篇 |
2005年 | 1803篇 |
2004年 | 1279篇 |
2003年 | 1086篇 |
2002年 | 778篇 |
2001年 | 768篇 |
2000年 | 531篇 |
1999年 | 316篇 |
1998年 | 150篇 |
1997年 | 128篇 |
1996年 | 111篇 |
1995年 | 84篇 |
1994年 | 69篇 |
1993年 | 64篇 |
1992年 | 55篇 |
1991年 | 50篇 |
1990年 | 29篇 |
1989年 | 17篇 |
1988年 | 23篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 40篇 |
1984年 | 64篇 |
1983年 | 44篇 |
1982年 | 35篇 |
1981年 | 14篇 |
1980年 | 14篇 |
1979年 | 12篇 |
1978年 | 2篇 |
1977年 | 6篇 |
1973年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
991.
以陆培等十位诗社成员为中心,从相关原始资料补充考订了清代诗人的生卒年及生平介绍,以期为日后编纂《全清诗》以及地方诗歌文献之类提供参考。 相似文献
992.
佘伯明 《河南金融管理干部学院学报》2015,(4)
中小企业社会信任网络的多层次性与其融资的可获得性有着密切的关系。通过社会信任网络解决中小企业内生资源不足问题,利用网络内含的默契、惯例、信任以及惩罚机制,构建以融资效率为核心的中小企业社会信任网络,有助于改善中小企业融资环境,消除中小企业融资障碍,提高中小企业融资效率。 相似文献
993.
Within the realm of urban logistics, Macário (2013) developed a hypothesis, denominated the Logistics Profile (LP) concept that suggests homogeneous groups of urban zones with respect to three dimensions, which could be used to analyze freight movement policy: (1) the social and built environment; (2) characteristics of the goods/products being moved; (3) characteristics of the deliveries at the receiver establishment. The concept was expected to ease the transferability of best practices in city logistics, by analyzing similarities and differences between zones. This research uses a quantitative methodology to apply the LP concept, and assess its potential, using the city of Lisbon as a case study. The analysis is focused on: (a) the extrapolation of freight trip generation per establishment and delivery characteristics from a sample of commercial establishments to the population within the case study, (b) proposing a methodology to test the LPs, (c) testing the existence of proposed LPs. Freight trips have been extrapolated using a Multiple Classification Analysis (MCA) model. Freight delivery characteristics were attributed to establishments from a sample-based probability distribution. LPs were tested using a two-step cluster analysis. Some LPs have been matched with clusters of case-study zones, subject to case study particularities. Profile overlap was not an issue and occurrences were expected. The testing showed that Logistic Profiles have the potential for being used as a departure point for urban freight planning and policy analysis. 相似文献
994.
In this paper, we are proposing a multi-objective mathematical model for the selection of a newly constructed hub and spoke system. The objectives of this model are maximizing aircraft utilization and revenue whilst reducing the commercially infeasible network detour factor. The sensitivity analysis of the model is tackled using weights related to the objectives as well as the network detour factor. The number of available aircraft and the range that an aircraft can reach are also considered in this model. Since Istanbul has already got a hub and spoke system with busy airports on both sides of the city, the model is applied to three other major cities of Turkey, Ankara, Antalya, and Izmir. The test data consists of over 90 cities in Europe and in the Middle East. The data includes unit passenger revenues and operating costs for the segments, distances between cities and hubs, expected load factors and flying times of segments. The scenarios are tested under specific expectations of airline network experts and the results are visualized by using Pareto front graphs. Compared to other candidates, Antalya stands out as a good choice for a new hub and spoke system in Turkey. The results of this model could be helpful for airlines and other airports in Turkey in order to identify their potential and competitive position in relation to their counterparts. 相似文献
995.
Recognizing the increasing importance of healthiness in food-related businesses, this study attempted to investigate the role of consumers’ affective responses in a healthy food consumption context. To achieve its objectives, this study incorporated anticipated emotional constructs in a decision-making model and investigated the relationships among perceived healthiness, anticipated guilt and pleasure, and behavioral intentions (e.g., purchase, spreading positive word-of-mouth, and recommending the food) in a quick service restaurant setting. The results of this study suggest that anticipated pleasure positively influenced behavioral intentions and mediated the relationship between perceived healthiness and behavioral intentions, whereas anticipated guilt did not influence behavioral intentions. Additionally, this study investigated the moderating role of dietary concerns in consumers’ decision-making processes and found that the low dietary concerns group was more susceptible to anticipated pleasure compared to the high dietary concerns group. Further findings and implications are provided in the main body of the paper. 相似文献
996.
在中国特色社会主义生态文明建设中,环境保护是当今社会重大课题;而环境保护关乎经济发展、社会责任等多个方面,涉及政府、企业、公众多个群体.因此,如何通过有效的机制均衡各群体以做好环境保护工作一直是国家所关注的.通过分析当今情境下政府和企业的博弈过程,研究政府与企业博弈的优化问题,并在此基础上提出相应的解决环境保护问题的对策建议. 相似文献
997.
本文重点研究教育投入与经济增长的协调关系。通过分析教育投入与经济增长的关系,可以为我国制定教育发展战略的目标提供更为科学的理论基础和有效的决策依据。从而达到经济增长与教育发展的互利共赢。 相似文献
998.
本文以榆林学院为例,从地方高校大型分析测试仪器设备发展中呈现出的特点以及存在的问题出发,在提高大型仪器设备的利用率和使用效益等方面进行了分析探讨。 相似文献
999.
Statistical issues arising in modelling univariate extremes of a random sample have been successfully used in the most diverse fields, such as biometrics, finance, insurance and risk theory. Statistics of univariate extremes (SUE), the subject to be dealt with in this review paper, has recently faced a huge development, partially because rare events can have catastrophic consequences for human activities, through their impact on the natural and constructed environments. In the last decades, there has been a shift from the area of parametric SUE, based on probabilistic asymptotic results in extreme value theory, towards semi‐parametric approaches. After a brief reference to Gumbel's block methodology and more recent improvements in the parametric framework, we present an overview of the developments on the estimation of parameters of extreme events and on the testing of extreme value conditions under a semi‐parametric framework. We further discuss a few challenging topics in the area of SUE. © 2014 The Authors. International Statistical Review © 2014 International Statistical Institute 相似文献
1000.
Yves L. Grize 《Revue internationale de statistique》2015,83(1):135-159
This is an expository paper on applications of statistics in the field of general insurance, also called non‐life insurance. Unlike life insurance where advanced statistical techniques have long been part of financial mathematics and actuarial applications, their use is only relatively recent in non‐life insurance. The business model of insurance companies, especially those active in non‐life insurance, has seen dramatic changes over the last 15 years. The aim of this paper is to convince the readers that especially today non‐life insurance is not only an exciting ground to apply existing modern statistical tools but also a fertile environment for new and challenging statistical developments. The activities of an insurance company can be viewed as an industrial process where data management and data analysis play a key role. That is why a fundamental understanding of data‐related issues (such as data quality, variability, analysis and correct interpretation) is so essential to the insurance business. These are exactly the tasks where professional statisticians excel. Also, a better understanding of the field of general insurance by statisticians will promote fruitful exchanges between actuaries and statisticians, thereby helping to bring actuarial and statistical professional societies closer to each other. Selected examples are used to cover the essential aspects of general insurance, and all of them are based on the author's experience. The paper concludes with some remarks on the role of statisticians working in general insurance. 相似文献