[Reliability-aware periodicity graph neural network for remote heart rate estimation]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHuang C, Wang Y.
europepmc +1 more source
[Classification of systemic lupus erythematosus resting-state functional magnetic resonance imaging data based on the end-to-end model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiMa Y +8 more
europepmc +1 more source
Gaoya dianqi在基于振动特征值法的电力变压器故障检测领域，目前广泛采用基频占比、总谐波畸变率等诊断指标，然而变压器在正常运行时，由于激励源的非线性特性和机械部件共振的影响，将产生200、300 Hz等倍频振动信号，降低了特征值对正常、故障工况的区分度。为解决上述问题，文中搜集了各电压等级变压器正常、故障工况的56组振动数据，检验了传统特征值的分类效果；搭建了3种电压等级的三相电力变压器有限元仿真模型，分析了油箱表面振动分布特征和倍频分量成因；优化了基频占比、总谐波畸变率特征值的计算式，提升了两特征值的分类效果 ...
黄建业 +5 more
doaj
[Duchenne muscular dystrophy-associated cardiomyopathy: advances in diagnosis and management]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiGu J, Liu YH, Hong SQ.
europepmc +1 more source
[End-to-end digital holographic phase reconstruction using an improved convolutional neural network]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiXiong Z, Zhou J, Tang B, Wang Z, Wang X.
europepmc +1 more source
, 2019 针对柔性臂的振动问题,设计并搭建了一套基于双目视觉检测,以伺服电机驱动控制的柔性臂实验平台进行研究。根据电机的运行状态将柔性臂振动分为定点振动和旋转振动,通过双目视觉对柔性臂上的特征点进行三维重建,进而获取柔性臂的定点和旋转振动信号。对振动信号进行模态分析获取柔性臂的振动特性,并据此设计基于蚁群优化参数的PD控制器抑制柔性臂的弯曲振动,然后与常规PD控制效果进行比较。实验结果表明,基于蚁群优化参数的PD控制能够在较短时间内有效抑制柔性臂的定点振动,相较于常规PD控制抑振效果有明显改善 ...
邱志成, 刘金国, 肖骏
core
[Myocardium global longitudinal strain and peripheral blood neutrophil-to-lymphocyte ratio for predicting MACE risks following percutaneous coronary intervention for first-time acute myocardial infarction: a prospective cohort study]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoHe M +11 more
europepmc +1 more source
[Liver lesion classification in multi-modal magnetic resonance imaging via medical foundation segmentation models and radiomics integration]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiu Y +5 more
europepmc +1 more source
[Research on auditory neurofeedback technology and its multi-disciplinary applications]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHu X +6 more
europepmc +1 more source
Gaoya dianqi与声压法和声强法相比，振动声功率测算方法具有从变压器本体和风扇综合噪声中提取本体声源特性的优势。振动测点的布放方式对声功率测算结果影响较大。目前振动测点布放尚无统一标准，多采用近似均匀布放方式，声功率测算结果往往偏低。文中提出基于变压器箱体表面主振点定位的非均匀布点方法，对山西省内某1 000 kV特高压变压器的本体辐射声功率进行了测算研究。在测试条件下，新方法得到的本体振动声功率高于均匀布放方式，本体振动和风扇总声功率与声压法测算结果吻合度更高。该方法有利于提高特高压变压器本体声功率测算的准确度 ...
张超, 刘国强, 芦竹茂, 俞华
doaj