CASIA OpenIR

浏览/检索结果: 共3条,第1-3条 帮助

限定条件                
已选(0)清除 条数/页:   排序方式:
Characterizing Social Media Messages Related to Underage JUUL E-Cigarette Buying and Selling: Cross-Sectional Analysis of Reddit Subreddits 期刊论文
JOURNAL OF MEDICAL INTERNET RESEARCH, 2020, 卷号: 22, 期号: 7, 页码: 13
作者:  Liu, Hejing;  Li, Qiudan;  Zhan, Yongcheng;  Zhang, Zhu;  Zeng, Daniel D.;  Leischow, Scott J.
Adobe PDF(149Kb)  |  收藏  |  浏览/下载:470/98  |  提交时间:2021/01/07
JUUL  e-cigarette  Reddit  cross-sectional analysis  electronic nicotine delivery system  underage JUUL use  
实现观点搜索引擎排序的方法 专利
专利类型: 发明, 专利号: CN200810057879.8, 申请日期: 2008-02-20, 公开日期: 2009-08-26
发明人:  缪庆亮;  戴汝为;  李秋丹;  王春恒
收藏  |  浏览/下载:176/0  |  提交时间:2015/09/22
Providing personalized services for HWME system by item-based collaborative filtering 会议论文
Pacific Asia Workshop on Intelligence and Security Informatics, 2007/4/11
作者:  Qiudan Li;  Yaodong Li;  Huiguang He;  Guanggang Geng;  Yuanping Zhu;  Chunheng Wang
收藏  |  浏览/下载:127/0  |  提交时间:2018/02/14