Jingshui jishu【目的】针对当前水源地核与辐射监测中低信噪比、非稳态干扰及复杂水文耦合效应导致误报率高、慢性渗漏检出困难的核心问题，本文旨在构建一种智能化预警模型，来实现对放射性异常的精准预测、可靠检测与快速决策。【方法】本文提出一种融合双向长短期记忆(Bi-LSTM)网络与改进孤立森林(iForest)的智能预警模型——双向记忆森林协同预警(Bi-LSTM-iForest)模型。首先，通过多源时空特征工程提取辐射-水文-气象参数的耦合规律，构建特征矩阵。利用Bi ...
Fan Junyu +5 more
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Gaoya dianqi估算金属氧化物避雷器的使用寿命一直是一项挑战，它决定着输电系统的安全稳定运行。基于此，文中提出了一种基于自适应神经模糊推理系统（adaptive neuro-fuzzy inference system，ANFIS）和支持向量机回归（support vector machine for regression，SVR）组成的组合时间序列预测模型，用于估算金属氧化物避雷器（metal oxide surge arrester，MOSA）的使用寿命。首先，文中进行了现场测量 ...
刘伟
doaj
Gaoya dianqi合成试验是检验大容量断路器短路开断能力的重要试验方法，文中针对合成试验中短路电流预测精度的要求，首先分析了威尔合成回路同步控制的原理，将过零点预测问题等效为时间序列预测问题，据此提出建立CNN-LSTM预测模型拟合短路电流序列，预测过零点。其次，通过某次试验中的短路电流情况建立预测模型，并比较了CNN-LSTM混合网络与单一LSTM网络的预测效果，在此基础之上，将该CNN-LSTM预测模型应用到不同短路电流下T100s及T100a试验中，实验结果显示该模型对于过零时刻的预测误差均≤4 μs ...
王智 +4 more
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[Construction of an Early-stage Risk Prediction Model for Trauma-Induced Coagulopathy]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanXu X +7 more
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基于LASSO回归的血小板分布宽度与计数比值预测脓毒症的列线图预测模型构建
Zhongguo shiyan zhenduanxue目的构建与验证基于血小板分布宽度与计数比值（platelet distribution width to count ratio,PCR）的列线图预测模型，用于评估脓毒症患者28 d内死亡风险。方法纳入2022年1月至2023年12月期间在承德医学院附属医院重症医学科收治的331例脓毒症患者，收集患者入院后一般资料、实验室检查指标。采用Lasso回归分析（least absolute shrinkage and selection operator,Lasso）筛选影响脓毒症患者死亡风险的危险因素 ...
孙毅 +4 more
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[Construction of a predictive model for recompensation in patients with decompensated viral hepatitis-induced cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiXu DQ +5 more
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[Development and Validation of a Risk Prediction Model for Secondary Pulmonary Infarction in Elderly Patients With Acute Pulmonary Embolism]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanChen S, Weng M, Lü Y, Jiang Y, Pang Y.
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[Perioperative Neurocognitive Disorders in Patients With Colorectal Cancer Undergoing General Anesthesia: Influencing Factors and Development of a Nomogram Prediction Model]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanTao W, Xia X, Dai Z, Li R.
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[Development and validation of a multicenter nomogram predicting the risk of liver metastasis after curative resection of colorectal cancer]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanWang N, Yuan D, Zhu Y, Ding L.
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[Research progress on predictive models of portal vein thrombosis in liver cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiWu ZN +5 more
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