通过建立计算预制装配式型钢混凝土(PSRC)梁抗剪承载力的智能模型,在一定程度上提高了计算精度与适用性。基于BP人工神经网络算法,通过对影响PSRC梁抗剪承载力的相关参数进行梳理,选取14个主要影响参数作为输入层,以试算法确定隐含层节点数为5,初步构建了3层结构人工神经网络系统;以收集的76组试验数据作为学习样本,对构建的神经网络系统进行训练,建立了对PSRC梁及SRC梁抗剪承载力计算的N14-5-1智能模型。使用智能模型对6个PSRC梁构件及6个SRC梁构件进行抗剪承载力计算,并通过与规范公式计算结果、
刘坚+13 more
doaj
[A study on the effects of learning on the properties of rats hippocampal-prefrontal connections in a memory task]. [PDF]
Li S+5 more
europepmc +1 more source
SB202190对卡英酸诱导的癫痫大鼠模型认知功能的影响及机制
摘 要:【目的】 研究p38丝裂原活化蛋白激酶(p38MAPK)选择性抑制剂SB202190对卡英酸(KA)致痫大鼠学习、记忆能力的影响及其与海马神经元凋亡的关系的探讨。【方法】40只大鼠随机分为4组:假处理组、模型组和SB202190低、高剂量组(剂量分别为7.5 mg/kg,30 mg/kg),对各组大鼠进行行为学观察,应用Morris水迷宫试验,检测大鼠学习和记忆能力,同时通过BL-420F生物机能实验系统描记脑电图的变化,采用 TUNEL 检测细胞凋亡并计算凋亡率 ...
doaj
[A review of deep learning methods for non-contact heart rate measurement based on facial videos]. [PDF]
Guan S, Lyu Y, Li Y, Xia C, Qi L, Xu L.
europepmc +1 more source
[DeepSeek perspective on managing Kawasaki disease in Chinese children]. [PDF]
Pan Y, Jiao FY.
europepmc +1 more source
[CRAKUT:integrating contrastive regional attention and clinical prior knowledge in U-transformer for radiology report generation]. [PDF]
Liang Y+5 more
europepmc +1 more source
[A multi-scale supervision and residual feedback optimization algorithm for improving optic chiasm and optic nerve segmentation accuracy in nasopharyngeal carcinoma CT images]. [PDF]
Liu J, Liang S, Zhang Y.
europepmc +1 more source
[Small bowel video keyframe retrieval based on multi-modal contrastive learning]. [PDF]
Wu X+7 more
europepmc +1 more source
目的探索结合妊娠早期和妊娠中期的临床数据与超声影像多模态数据对小于胎龄儿(SGA)的预测价值,构建和内部验证基于多种机器学习算法的SGA 预测模型。方法本研究回顾性纳入单胎妊娠孕妇1 307例,根据INTERGROWTH-21st胎儿生长标准诊断SGA并采集包括临床一般资料、生化检验数据及产前超声筛查数据的多模态数据。轻度梯度增强算法(XGBoost)用于计算变量重要性,七种机器学习算法用于预测模型的构建与内部验证,受试者工作特性曲线下面积(AUC)作为衡量预测效能的主要指标,结合10 ...
陈心雨, 朱云晓
doaj
[Research progress in motor assessment of neurodegenerative diseases driven by motion capture data]. [PDF]
Wu J, Guo W, Luo K, He L, Yang G.
europepmc +1 more source