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   2033篇
  免费   77篇
  国内免费   17篇
财政金融   87篇
工业经济   113篇
计划管理   701篇
经济学   214篇
综合类   198篇
运输经济   19篇
旅游经济   38篇
贸易经济   217篇
农业经济   362篇
经济概况   177篇
信息产业经济   1篇
  2024年   8篇
  2023年   27篇
  2022年   36篇
  2021年   47篇
  2020年   65篇
  2019年   34篇
  2018年   36篇
  2017年   40篇
  2016年   36篇
  2015年   73篇
  2014年   169篇
  2013年   153篇
  2012年   180篇
  2011年   231篇
  2010年   175篇
  2009年   95篇
  2008年   123篇
  2007年   115篇
  2006年   97篇
  2005年   88篇
  2004年   77篇
  2003年   67篇
  2002年   40篇
  2001年   39篇
  2000年   32篇
  1999年   18篇
  1998年   1篇
  1997年   6篇
  1996年   7篇
  1995年   4篇
  1994年   5篇
  1992年   1篇
  1990年   1篇
  1988年   1篇
排序方式: 共有2127条查询结果,搜索用时 15 毫秒
71.
王燕 《商》2014,(11):271-272
当今,学术界的引文不规范行为十分严重。针对于此,本文主要概括了引文不规范行为的分类、原因和解决对策,强调引文在科技论文中的重要作用,并从作者自身、期刊社和相关法律制度三个方面解决该问题。  相似文献   
72.
There are an increasing number of companies in the mining and metals sector disclosing environmental sustainability information in their annual reports, sustainability reports and corporate internet web pages. However, there is ongoing debate about the relationship between the quantity and the quality of environmental disclosure. That is, does an increase in number equate to an increase in quality? This study investigates the relationship between the quantity and the quality of environmental disclosure reports. Using content analysis, we examine the environmental disclosure of 55 Australian mining and metal companies which are listed among the Australian Securities Exchange's (ASX) Top 100 mining and metal sector companies. We find that the size of firms influences both the quantity and the quality of corporate environmental disclosure. That is, we find that market capitalization is positively and significantly correlated to the quantity (number of words) and the quality of disclosure. We also confirm that there is a very highly significant, positive correlation between quantity (number of words) and quality of environmental disclosure. In order to investigate any differences between the top performing group and the bottom performing group in terms of environmental disclosure quality, further analysis also confirms that there is a positive relationship between the quantity and the quality of environmental disclosure. Copyright © 2015 John Wiley & Sons, Ltd and ERP Environment  相似文献   
73.
张明芳 《价值工程》2014,(10):274-275
对当前高校考试管理工作中存在的主要问题进行分析和研究,并提出相应对策,使考试管理更为科学有效,从而为教学质量的提高提供保障。  相似文献   
74.
本文论述了数据挖掘技术在图书馆借阅系统的应用,通过对原有管理系统现有数据的整理统计,对满足要求的数据使用K-means算法进行分割,由分类后的数据可以合理地调整不同读者群的流通图书借阅方法,优化图书资源的使用状况。  相似文献   
75.
The computational complexity, huge memory space requirement, and time-consuming nature of frequent pattern mining process are the most important motivations for distribution and parallelization of this mining process. On the other hand, the emergence of distributed computational and operational environments, which causes the production and maintenance of data on different distributed data sources, makes the parallelization and distribution of the knowledge discovery process inevitable. In this paper, a gossip based distributed itemset mining (GDIM) algorithm is proposed to extract frequent itemsets, which are special types of frequent patterns, in a wireless sensor network environment. In this algorithm, local frequent itemsets of each sensor are extracted using a bit-wise horizontal approach (LHPM) from the nodes which are clustered using a leach-based protocol. Heads of clusters exploit a gossip based protocol in order to communicate each other to find the patterns which their global support is equal to or more than the specified support threshold. Experimental results show that the proposed algorithm outperforms the best existing gossip based algorithm in term of execution time.  相似文献   
76.
The implications of the study provide suggestions for future improvements relating to the development of industrial tourism destinations. The possibility of ‘re-using’ the old industrial and mining heritage could favour the development of an economic opportunity to the recession that affected most industrial regions after the 1960s. This paper is focused on the field of industrial heritage tourism management (IHTM) to deepen the knowledge about its business ecosystem. The IHTM is chosen because a number of evidences highlight the interconnections that exist between this field and the business ecosystem concept. To explore these interconnections, the purpose of this article is to define a frame of analysis based also on the emergent initiative of smart tourism and to set up a theoretical framework not only used to the case study of the region of Rio Tinto mine in Spain, but also used as a policy instrument to suggest propositions for recommending new paths for future studies.  相似文献   
77.
本文就建筑装饰工程管理中存在的问题提出了一些相应的解决措施。  相似文献   
78.
Location selection plays a crucial role in the retail and service industries. A comprehensive location selection model and appropriate analytical technique can improve the quality of location decisions, attracting more customers and substantially impacting market share and profitability. This study developed a data mining framework based on rough set theory (RST) to support location selection decisions. The proposed framework consists of four stages: (1) problem definition and data collection; (2) RST analysis; (3) rule validation; and (4) knowledge extraction and usage. An empirical study focused on a restaurant chain to demonstrate the validity of the proposed approach. Twenty location variables relevant to five location aspects were examined, and the results indicated that latent knowledge can be identified to support location selection decisions.  相似文献   
79.
This paper is analysising the present of the Chinese civil action sue mainly and finding the specific method. Establishes the litigant principle the lawsuit pattern; Strengthens the related legislation and introducing legal precedent properly; Standard legal procedure. The fact evidents that the better we solve these problems the closer we go to the harmonious society for the problem which the Chinese civil action sues faced.  相似文献   
80.
数据挖掘技术的出现为组织机构代码办证过程中积累原始数据的深层次开发应用提供了一种可行的手段。文章介绍了数据挖掘在组织机构代码工作中的使用目的和实现方法,并结合实际数据详细分析了代码信息的应用,希望通过对代码数据的挖掘为决策者提供有用的信息参考。  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