Results 101 to 110 of about 16,430 (195)
A DC-UNet-based image processing method for detecting fractures along roadway sections of coal mines [PDF]
ObjectiveDetecting fractures along roadway sections of coal mines allows for the characterization of the geologic conditions of roadways, thus providing guidance for roadway tunneling and support engineering.
Chenhui TIAN +5 more
core +1 more source
Shuitu Baochi Xuebao, 2011 针对不同利用目的和不同管理方式竹林地的侵蚀产沙特征,在浙江省临安市和安吉县,分别选择用材竹林地和挖笋竹林地,建立径流小区(面积3 m×1.5 m,坡度20°),设计用材竹林地不锄草清鞭施肥、笋林地除草清鞭每年1次和两年1次,共3种管理方式,采用人工模拟降雨的试验手段,设定6个降雨强度(0.53~1.90 mm/min),定时采集径流泥沙样,分析了不同管理方式下竹林地的侵蚀产沙过程特征,计算了侵蚀强度的差异。结论如下:(1)在单场降雨过程中,用材竹林地产沙量的最大与最小值之差很小,而笋用竹林地则相差很大 ...
张丽萍, 吴希媛, 张锐波
doaj
Dianxin kexue在电信行业中，客户流失的准确预测对于相关企业维持市场竞争力和增加收益至关重要。为此提出一个结合CatBoost算法和SHAP（shapley additive explanations）模型的客户流失预测框架，旨在提高预测的准确性，同时增强模型的可解释性。利用新疆某通信公司的实际营业数据，通过数据预处理及特征工程，构建预测模型，选取5种主要关键性能指标评估模型性能。实验结果显示，所提出模型在选取的评价指标上均优于当前主流机器学习预测模型。最后引入SHAP框架增强模型可解释性，揭示影响客户流失的关键因素 ...
王圣节, 张庆红
doaj +1 more source
Shuitu Baochi Xuebao, 2018 通过室内模拟降雨试验，分析雨强和坡度对第四纪红黏土坡面侵蚀过程的影响，揭示南方红壤低山丘陵区第四纪红黏土坡面侵蚀机理。根据研究区地形和降雨特点，设计坡度10°，15°，20°，雨强1.0，1.5，2.0 mm/min，研究两者对坡面侵蚀过程的影响。结果表明：（1）坡面初始产流时间随着坡度和雨强的增大而逐渐减小；同一雨强下，径流系数大小为20° > 15° > 10°。（2）不同试验处理条件下，坡度由10°增加到20°，坡面累积产沙量增加0.46~1.98倍；降雨强度由1.0 mm/min增加到2.0 ...
姚冲 +7 more
doaj
Key Technologies And Application Research Of Control And Real-time Monitoring Tasks In Smart Home Web Of Things [PDF]
, 2016 随着移动互联、云计算等技术的发展以及人们生活水平的提高，近年来智能家居市场获得长足发展，出现了大批新型产品，越来越多的用户通过智能设备无线接入互联网，实现内容的获取及相互之间的交互，一定程度上满足了大家的需求，但还普遍存在实时特性差、对于Web支持有限、大量使用私有协议或底层协议、标准兼容性低、设备互联互通困难的问题。 本课题针对智能家居中的两类典型应用场景，将Web协议和架构引入物联网领域，构建出具有开放性和松耦合特性的智能家居物维网（WebofThings，WoT）应用架构，研究工作取得以下创新点：
张帆
core
EEG Enhancement Algorithm Based on Combination of Effective Attention and GAN [PDF]
Electroencephalogram(EEG)-based Convolutional Neural Network(CNN) models are widely used to classify and diagnose stroke. However, owing to the small number of stroke patient samples, the category imbalance of the dataset reduces the classification ...
Suzhe WANG, Xueying ZHANG, Xiaoyu CHEN, Fenglian LI, Zeling WU
core +1 more source
Recommendation Algorithm Based on Multi-view Fusion Cross-layer Contrastive Learning [PDF]
Existing recommendation models based on graph comparison learning usually use only one view enhancement method in graph data enhancement, ignoring the limitations of a single method.
Jiajing GU, Dan YANG, Tiezheng NIE, Yue KOU
core +1 more source
A Temporal Densely Connected Recurrent Network for Event-based Human Pose Estimation
, 2023 Event camera is an emerging bio-inspired vision sensors that report per-pixel brightness changes asynchronously. It holds noticeable advantage of high dynamic range, high speed response, and low power budget that enable it to best capture local motions ...
Li, Youfu +4 more
core
Shuitu Baochi Xuebao, 2011 片蚀过程是坡面径流侵蚀过程的第一阶段和侵蚀方式演变的初始形态,阐明坡面片蚀过程可为坡面侵蚀过程模型建立和坡面水土流失治理提供重要科学依据。采用人工模拟降雨试验方法对黄土坡面片蚀过程进行了研究,结果表明:不同雨强及不同坡度下,坡面片蚀率皆随降雨历时的增长呈先急剧增大后趋于稳定的变化趋势,变化的转折点为产流后的5min左右;坡面片蚀模数随雨强和坡度的增大均呈显著的增加,可分别用指数方程和对数方程描述;雨强和坡度对片蚀模数的综合影响可以用二元幂函数方程描述,其中,坡度的影响大于雨强 ...
刘俊娥, 王占礼, 高素娟
doaj
Negative obstacle detection on open pit roads based on multi-feature fusion [PDF]
With the gradual implementation of intelligent mine concept, intelligence and unmanned operation are gradually implemented in mining area. Unmanned driving of open pit mine trucks is increasingly becoming the main focus of intelligent mine construction ...
Caiwu LU +3 more
core +1 more source