全文获取类型
收费全文 | 8362篇 |
免费 | 114篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 979篇 |
工业经济 | 409篇 |
计划管理 | 1655篇 |
经济学 | 1813篇 |
综合类 | 71篇 |
运输经济 | 31篇 |
旅游经济 | 74篇 |
贸易经济 | 1423篇 |
农业经济 | 251篇 |
经济概况 | 1634篇 |
邮电经济 | 137篇 |
出版年
2020年 | 70篇 |
2019年 | 106篇 |
2018年 | 126篇 |
2017年 | 135篇 |
2016年 | 124篇 |
2015年 | 121篇 |
2014年 | 307篇 |
2013年 | 802篇 |
2012年 | 284篇 |
2011年 | 238篇 |
2010年 | 217篇 |
2009年 | 256篇 |
2008年 | 202篇 |
2007年 | 154篇 |
2006年 | 261篇 |
2005年 | 186篇 |
2004年 | 123篇 |
2003年 | 130篇 |
2002年 | 117篇 |
2001年 | 150篇 |
2000年 | 107篇 |
1999年 | 90篇 |
1998年 | 107篇 |
1997年 | 77篇 |
1996年 | 86篇 |
1995年 | 105篇 |
1994年 | 74篇 |
1993年 | 105篇 |
1992年 | 112篇 |
1991年 | 120篇 |
1990年 | 112篇 |
1989年 | 118篇 |
1988年 | 91篇 |
1987年 | 97篇 |
1986年 | 112篇 |
1985年 | 109篇 |
1984年 | 135篇 |
1983年 | 93篇 |
1982年 | 112篇 |
1981年 | 110篇 |
1980年 | 120篇 |
1979年 | 112篇 |
1978年 | 96篇 |
1977年 | 106篇 |
1976年 | 83篇 |
1975年 | 81篇 |
1974年 | 74篇 |
1973年 | 72篇 |
1972年 | 97篇 |
1971年 | 88篇 |
排序方式: 共有8477条查询结果,搜索用时 0 毫秒
31.
N Vink 《Development Southern Africa》1984,1(3-4):439-449
If it is accepted that both the system and the individual can act as barriers to development at the micro‐level, development policy could be aimed at identifying the major causes and sources of inefficiency and removing the existing barriers to the achievement of efficiency.
In this article the major barriers to system efficiency are identified as being physical and institutional, and they include the physical structure of irrigation schemes, the land tenure system and the marketing structure. A theoretical discussion of each of these factors is used to propose more specific strategies for micro‐level rural development. 相似文献
32.
33.
Prof. Dr. Werner Wirth Jörg Matthes Ursina Mögerle Elizabeth Prommer 《Publizistik》2005,50(3):320-343
So far relatively little is known about the situation of Ph.D. students in media and communication research. The main purpose of this study is, therefore, to shed light on the employment and working conditions for young scholars on their way to their doctoral degrees. We conducted a survey of 281 Ph.D. students in Germany, Switzerland and Austria. The results show that, on the one hand, young scholars are intrinsically highly motivated to do their jobs. On the other hand, they perceive an academic career as a very uncertain venture with many obstacles. Furthermore, several types of Ph.D. students can be distinguished: idealists, careerists and waverers. It is shown that only the idealists conform to the concept of a productive and interested scholar. The results are discussed in terms of their importance for the future development of the field. 相似文献
34.
35.
36.
37.
38.
The transparency that journalists and newsrooms can produce for their audience has long been regarded as a rather marginal criterion for journalistic quality. But new transparency models??due to the interactivity, immediacy, archiving capacity and the absent limitation of space in the internet??offer greater potentials than classical instruments in print and broadcasting. In comments, web videos, blogs, twitter feeds and social networks, journalists discuss with users and publicly account for editorial decisions. Transparency is fashionable in the digital public sphere; its evaluation, however, is not clear, but ambiguous and complex. This paper conceptualizes (self-)transparency and qualitatively classifies the available instruments in a three-dimensional matrix model. This is to facilitate the analysis of problematic areas and potential conflicts: Newsrooms demonstrating open self-reflection dismiss the ideal of ??objective journalism??. Yet, transparency is not only an ethical demand, but is also supposed to strengthen trust in journalistic products because it permits quality evaluations by the audience. An experiment shows, for the first time, that self-transparency has an effect on trust in some aspects but not as a basic principle. Analysing this interdependency, we have to distinguish between transparency of process and of product as well as between different media. 相似文献
39.
Dr. med. Anke Bahrmann 《Heilberufe》2012,64(5):20-23
Diabetes mellitus ist eine klassische Alterserkrankung, die zudem selten allein kommt. Daher sind die wichtigsten Therapieziele für geriatrische Patienten mit Diabetes mellitus die Bewahrung der Lebensqualit?t, der Erhalt der physischen, psychischen und sozialen Kompetenz sowie Eigenst?ndigkeit. 相似文献
40.
Wencke Dybski Katharina Hanel Andree Kringe Kristina Peun Prof. Dr. Ralph Weiß 《Publizistik》2010,55(2):173-192
The case study regards the question whether economic self-interests of publishers have a significant influence on the reporting of their own newspapers with regard to crucial topics touching those interests. The conflict about the minimum wage in the mailing business is scrutinized. The newspapers engaged in the mailing business are compared with those of independent newspapers without these interests. Because the political inclination of a newspaper, even beyond the self-interests of its publisher, affects the reporting of a conflict, newspapers with different political views are chosen among economically involved and uninvolved media companies. The study is based on the “public task” of press and researches, using a quantifying analysis of contents, relevance and plurality of conflict reports. The results show that in this case the basic political orientation of a newspaper had a significant influence on the portrayal of the conflict. An additional influence with regard to the economic self-interests could not be proven significantly. Ideology seems to be more important than self-interest. However in this case political orientation and economic self-interests harmonized. Therefore it is still relevant to study the role of economic interests for the realization of the “public task”. 相似文献