全文获取类型
收费全文 | 914篇 |
免费 | 12篇 |
专业分类
管理学 | 134篇 |
民族学 | 8篇 |
人口学 | 56篇 |
丛书文集 | 7篇 |
理论方法论 | 95篇 |
综合类 | 8篇 |
社会学 | 480篇 |
统计学 | 138篇 |
出版年
2021年 | 7篇 |
2020年 | 10篇 |
2019年 | 17篇 |
2018年 | 13篇 |
2017年 | 19篇 |
2016年 | 18篇 |
2015年 | 15篇 |
2014年 | 30篇 |
2013年 | 205篇 |
2012年 | 27篇 |
2011年 | 20篇 |
2010年 | 24篇 |
2009年 | 14篇 |
2008年 | 25篇 |
2007年 | 18篇 |
2006年 | 33篇 |
2005年 | 32篇 |
2004年 | 20篇 |
2003年 | 17篇 |
2002年 | 28篇 |
2001年 | 20篇 |
2000年 | 16篇 |
1999年 | 12篇 |
1998年 | 17篇 |
1997年 | 10篇 |
1996年 | 13篇 |
1995年 | 10篇 |
1994年 | 14篇 |
1993年 | 16篇 |
1992年 | 7篇 |
1991年 | 11篇 |
1990年 | 9篇 |
1989年 | 4篇 |
1988年 | 11篇 |
1987年 | 13篇 |
1986年 | 8篇 |
1985年 | 5篇 |
1984年 | 8篇 |
1983年 | 12篇 |
1982年 | 8篇 |
1981年 | 10篇 |
1980年 | 11篇 |
1979年 | 11篇 |
1978年 | 8篇 |
1977年 | 6篇 |
1976年 | 12篇 |
1975年 | 16篇 |
1974年 | 6篇 |
1973年 | 6篇 |
1972年 | 5篇 |
排序方式: 共有926条查询结果,搜索用时 0 毫秒
921.
Abstract. This paper analyses the structure of the Brazilian Labour Code (CLT), the changes introduced since its approval in 1943, emphasizing the new Federal Constitution of 1988, the costs of labour and of dismissals for employers, the structure of union organizations, the regulation of collective bargaining and capital labour conflicts, and the process of wages determination. We also analyze the evolution of strike activity, and the evolution of wage differentials and functional distribution of income between profits and wages in industry in the last 15 years. 相似文献
922.
923.
There have been many models for portfolio selection, but most do not explicitly include uncertainty and multiple objectives. This paper presents an approach that includes these aspects using a form of stochastic integer programming with recourse. The method involves the use of a time-based decision tree structure called a “project tree.” Using this basic format, an illustrative six-project example is presented and analyzed. Various forms of objectives are discussed, ranging from the maximization of expected portfolio value to the maximization of the minimum weighted portfolio deviation from two goals. In each case, formulated numerical problems are given, and the solutions derived are presented. The approach is shown to be very flexible and capable of handling a variety of situations and objectives. 相似文献
924.
This paper describes the use of multiattribute decision making by the U.S. Coast Guard when choosing the most appropriate auxiliary device to use on an icebreaker. Five different missions of icebreakers are defined, and the objectives and attributes that describe the effectiveness of each auxiliary device in accomplishing these missions are established. For each geographical area of interest, the missions are weighted using the analytical hierarchy process. Also, group utilities are developed for attribute vectors in order to incorporate the judgments of different icebreaker operators. 相似文献
925.
926.