全文获取类型
收费全文 | 739篇 |
免费 | 36篇 |
国内免费 | 4篇 |
专业分类
管理学 | 84篇 |
民族学 | 4篇 |
人口学 | 9篇 |
丛书文集 | 37篇 |
理论方法论 | 37篇 |
综合类 | 264篇 |
社会学 | 96篇 |
统计学 | 248篇 |
出版年
2024年 | 1篇 |
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 11篇 |
2020年 | 15篇 |
2019年 | 25篇 |
2018年 | 20篇 |
2017年 | 27篇 |
2016年 | 25篇 |
2015年 | 30篇 |
2014年 | 39篇 |
2013年 | 132篇 |
2012年 | 42篇 |
2011年 | 45篇 |
2010年 | 42篇 |
2009年 | 40篇 |
2008年 | 33篇 |
2007年 | 30篇 |
2006年 | 26篇 |
2005年 | 24篇 |
2004年 | 22篇 |
2003年 | 16篇 |
2002年 | 18篇 |
2001年 | 28篇 |
2000年 | 21篇 |
1999年 | 14篇 |
1998年 | 5篇 |
1997年 | 10篇 |
1996年 | 4篇 |
1995年 | 7篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 6篇 |
1990年 | 1篇 |
1987年 | 1篇 |
1984年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有779条查询结果,搜索用时 265 毫秒
51.
In this paper we introduce the class of axial solutions for multiple objective optimization problems in contexts in which partial information on preference weights is available. These solutions combine the use of an improvement axis to direct the search of the most preferred result with the concept of efficiency with respect to preference information. 相似文献
52.
余秋洁 《淮海工学院学报(社会科学版)》2010,8(6):96-98
在师范专业的教学中,钢琴演奏课是一门非常重要的必修课,其教学结果直接关系到学生的就业及升学。针对教学中普遍存在的人多琴少的问题,教学实践中采用集体课与个别课交叉进行、琴与谱的分和练习、训练与活动同时进行的方法,收到了良好的效果。 相似文献
53.
对有理真分式当分母具有n重实根时分解为部分分式的方法进行研究,并给出两个在有理函数积分中具有实用价值的推论。 相似文献
54.
Breeding bird communities in Berlin were investigated at five study sites, which represent an structural urban-rural gradient,
from densely built-up areas with sealed ground to green areas such as large parks. In this paper, we tested the Hasse Diagram
Technique (HDT), an approach belonging to partial order theory, for its appropriateness to extract information about changes
in species composition from our data set. As expected, the overall number of bird species was positively correlated with the
urban-rural gradient, increasing from 12 found in the city center to 28 in an urban park. By HDT analysis, four different
sub-groups of birds could be identified, contributing differentially to the increase in species number: (1) ubiquists, i.e.,
species found at each study site, (2) a sub-group, the species’ number of which was positively correlated with the urban-rural
gradient, increasing with increasingly green areas, (3) a sub-group, the species’ number of which was negatively correlated
with the urban-rural gradient, decreasing with a declining density of buildings, and (4) species, the distribution of which
did not show any correlation with the urban-rural gradient. The results show that HDT is a suitable tool for formalized analysis
of the pattern of species’ communities along an environmental gradient. 相似文献
55.
黄蔷 《重庆工商大学学报(社会科学版)》2015,32(4):122-128
旅游宣传资料的英译是译者、作者和国外游客之间的一种跨时空、跨文化交际活动.旅游宣传资料的翻译者必须增强自身的跨文化敏感性,既精通两种语言又熟谙两种文化,最大限度地兼容交际双方的语言习惯、文化心理、交际规约和价值标准差异.本文试以比较中英旅游宣传资料在遣字用词、句式结构、谋篇布局、文本内容等方面的差异为路径,揭示中英两种语言体系所承载的语言习惯、价值观念、思维模式、民族心理、审美情趣等跨文化交际要素的差异,并提出跨文化交际视阈下的旅游宣传资料英译的原则和方法. 相似文献
56.
Researchers have documented that widows have lower levels of subjective well‐being than married individuals, but we still know little about how the regional and national contexts affect the impact of widowhood on well‐being. Building on social capital theory and using data from 5 rounds of the European Social Survey (N= 119,292 people, 206 regions, 23 countries), the authors tested how marital status composition at the national and regional levels affects the well‐being of widows. Widows fare worse in countries with high proportions of married people and in regions and countries with high proportions of widowed persons. The proportion of married individuals at the regional level does not affect their well‐being. These results are in line with the greedy marriage hypothesis, but varying effects at regional and national levels suggest that the standard explanation for this phenomenon, lack of individual social support, is not valid. This study demonstrates the importance of multiple contextual embeddedness. 相似文献
57.
As no single classification method outperforms other classification methods under all circumstances, decision-makers may solve a classification problem using several classification methods and examine their performance for classification purposes in the learning set. Based on this performance, better classification methods might be adopted and poor methods might be avoided. However, which single classification method is the best to predict the classification of new observations is still not clear, especially when some methods offer similar classification performance in the learning set. In this article we present various regression and classical methods, which combine several classification methods to predict the classification of new observations. The quality of the combined classifiers is examined on some real data. Nonparametric regression is the best method of combining classifiers. 相似文献
58.
中西学术思想及其史学观念的新进展 ,为我国史学方法体系的重建提供了理论前提。以罗荣渠的现代化研究、白寿彝总主编的《中国通史》、李学勤等人的“夏商周断代工程”为典型的具体历史研究 ,既为重建史学方法体系奠定了现实基础 ,又启发我们必须把跨学科方法作为史学方法新体系的中心内容。在跨学科方法中 ,除了自然科学和社会科学方法之外 ,还应对人文学科的方法给予特别的重视。 相似文献
59.
Investigating Differences in How the News Media Views Homosexuality Across Nations: An Analysis of the United States,South Africa,and Uganda 下载免费PDF全文
While there is a wealth of information about the extent to which people across the world disapprove of homosexuality, we know a lot less about the lenses through which they view same‐sex relations. The aim of this study is to understand better how homosexuality is framed in the public press, and how religion and economic development may combine to shape this discourse. Through an analysis of almost 400 newspaper articles, this study compares how homosexuality is framed in Uganda, South Africa, and the United States. Because these nations have high levels of religious belief, but differ in their level of economic development and democracy, we can assess how these factors interact to shape portrayals. Drawing on work from cultural sociology and the sociology of religion, this study shows that the United States is much more likely than Uganda to frame homosexuality as a civil rights issue and use entertainers as claimsmakers. Conversely, articles from Uganda are more likely than those from the United States or South Africa to frame homosexuality as a religious issue and draw on religious claimsmakers. Likewise, Uganda is much more likely than South Africa to discuss homosexuality in the context of Western influences. 相似文献
60.