全文获取类型
收费全文 | 512篇 |
免费 | 30篇 |
国内免费 | 3篇 |
专业分类
电工技术 | 7篇 |
化学工业 | 140篇 |
金属工艺 | 15篇 |
机械仪表 | 10篇 |
建筑科学 | 19篇 |
能源动力 | 25篇 |
轻工业 | 78篇 |
水利工程 | 11篇 |
石油天然气 | 5篇 |
无线电 | 40篇 |
一般工业技术 | 66篇 |
冶金工业 | 14篇 |
原子能技术 | 1篇 |
自动化技术 | 114篇 |
出版年
2024年 | 1篇 |
2023年 | 9篇 |
2022年 | 14篇 |
2021年 | 39篇 |
2020年 | 30篇 |
2019年 | 24篇 |
2018年 | 26篇 |
2017年 | 33篇 |
2016年 | 30篇 |
2015年 | 21篇 |
2014年 | 32篇 |
2013年 | 40篇 |
2012年 | 39篇 |
2011年 | 46篇 |
2010年 | 29篇 |
2009年 | 38篇 |
2008年 | 29篇 |
2007年 | 16篇 |
2006年 | 10篇 |
2005年 | 3篇 |
2004年 | 9篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有545条查询结果,搜索用时 15 毫秒
541.
542.
Martins Alessandro S. Neves Leandro A. de Faria Paulo R. Tosta Thaína A. A. Longo Leonardo C. Silva Adriano B. Roberto Guilherme Freire do Nascimento Marcelo Z. 《Pattern Analysis & Applications》2021,24(2):523-535
Pattern Analysis and Applications - There are different types of lesions that can be investigated with the hematoxylin–eosin staining protocol. Lymphoma is a type of malignant disease which... 相似文献
543.
Taino Daniela F. Ribeiro Matheus G. Roberto Guilherme F. Zafalon Geraldo F. D. do Nascimento Marcelo Z. Tosta Thaína A. A. Martins Alessandro S. Neves Leandro A. 《Pattern Analysis & Applications》2021,24(2):483-496
Pattern Analysis and Applications - The analysis of histological images is based on visual assessment of tissues by specialists using an optical microscopy. This task can be time-consuming and... 相似文献
544.
Leandro do C. Martins Patrick Hirsch Angel A. Juan 《International Transactions in Operational Research》2021,28(1):201-221
In this paper, we consider a vehicle routing problem in which a fleet of homogeneous vehicles, initially located at a depot, has to satisfy customers' demands in a two‐echelon network: first, the vehicles have to visit intermediate nodes (e.g., a retail center or a consolidation center), where they deliver raw materials or bulk products and collect a number of processed items requested by the customers in their route; then, the vehicles proceed to complete their assigned routes, thus delivering the processed items to the final customers before returning to the depot. During this stage, vehicles might visit other intermediate nodes for reloading new items. In some real‐life scenarios, this problem needs to be solved in just a few seconds or even milliseconds, which leads to the concept of “agile optimization.” This might be the case in some rescue operations using drones in humanitarian logistics, where every second can be decisive to save lives. In order to deal with this real‐time two‐echelon vehicle routing problem with pickup and delivery, an original constructive heuristic is proposed. This heuristic is able to provide a feasible and reasonably good solution in just a few milliseconds. The constructive heuristic is extended into a biased‐randomized algorithm using a skewed probability distribution to modify its greedy behavior. This way, parallel runs of the algorithm are able to generate even better results without violating the real‐time constraint. Results show that the proposed methodology generates competitive results in milliseconds, being able to outperform other heuristics from the literature. 相似文献
545.
Brzezinski Dariusz Minku Leandro L. Pewinski Tomasz Stefanowski Jerzy Szumaczuk Artur 《Knowledge and Information Systems》2021,63(6):1429-1469
Knowledge and Information Systems - Class imbalance introduces additional challenges when learning classifiers from concept drifting data streams. Most existing work focuses on designing new... 相似文献