全文获取类型
收费全文 | 248457篇 |
免费 | 12762篇 |
国内免费 | 6476篇 |
学科分类
工业技术 | 267695篇 |
出版年
2024年 | 714篇 |
2023年 | 2319篇 |
2022年 | 4610篇 |
2021年 | 6201篇 |
2020年 | 4673篇 |
2019年 | 4022篇 |
2018年 | 19094篇 |
2017年 | 18547篇 |
2016年 | 14788篇 |
2015年 | 6228篇 |
2014年 | 7507篇 |
2013年 | 9087篇 |
2012年 | 12598篇 |
2011年 | 19393篇 |
2010年 | 16752篇 |
2009年 | 13920篇 |
2008年 | 15033篇 |
2007年 | 15520篇 |
2006年 | 7423篇 |
2005年 | 7408篇 |
2004年 | 5873篇 |
2003年 | 5858篇 |
2002年 | 5281篇 |
2001年 | 4418篇 |
2000年 | 3920篇 |
1999年 | 3378篇 |
1998年 | 2695篇 |
1997年 | 2259篇 |
1996年 | 2036篇 |
1995年 | 1757篇 |
1994年 | 1497篇 |
1993年 | 1260篇 |
1992年 | 1230篇 |
1991年 | 1098篇 |
1990年 | 1094篇 |
1989年 | 1016篇 |
1988年 | 915篇 |
1987年 | 849篇 |
1986年 | 767篇 |
1985年 | 719篇 |
1984年 | 708篇 |
1982年 | 673篇 |
1979年 | 736篇 |
1978年 | 784篇 |
1977年 | 746篇 |
1976年 | 760篇 |
1975年 | 715篇 |
1974年 | 720篇 |
1973年 | 726篇 |
1972年 | 706篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
J-M Choe 《欧洲信息系统杂志》2002,11(2):142-158
This study empirically examined the organisational learning effects of the nonfinancial performance information provided by management accounting information systems (MAISs) under advanced manufacturing technology (AMT). In this study, a target costing system and the frequent and quick reporting of information were considered the facilitators of learning. First, we examined the relationships between AMT level and the amount of nonfinancial performance information produced by MAISs. The empirical results showed that there are significant positive relationships between the level of AMT and nonfinancial performance information. With a systems approach, we also proved the impact of the relationships among AMT levels, nonfinancial performance information and learning facilitators on the organisational performance of a firm. The results of our research suggest that under a high level of AMT, for the provision of information to result in an increase of performance through organisational learning, a target costing system must be introduced and a large amount of information should be provided frequently and quickly. The results of this study also showed that although AMT level may be low, fairly well-arranged facilitators and a moderately large amount of information may be necessary for the improvement of performance. In conclusion, effective organisational learning depends on the provision of relevant information as well as efficient learning support mechanisms. 相似文献
82.
83.
84.
85.
86.
87.
A. N. Utkina Yu. Yu. Cherkis M. N. Kozlova V. L. Kozlov 《Metal Science and Heat Treatment》1982,24(4):270-273
Conclusion To ensure the required characteristics of the diffusion layer in heat-resistant steels, it is recommended to subject them to two-stage nitriding: saturation at 950°C for 2 h in endogas with an addition of 12% natural gas and 4% ammonia, lowering the temperature to 900°C, holding for 5 h in endogas with an addition of 6% natural gas and 4% ammonia; exchange of gas 6 times.Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 34–36, April, 1982. 相似文献
88.
89.
90.