Results 101 to 110 of about 2,526 (155)

光纤布拉格光栅非线性双稳开关特性研究

Guangtongxin yanjiu, 2011
采用数值模拟的方法研究了光纤布拉格光栅（FBG）的非线性双稳开关特性。从耦合模理论出发,利用Jacobi椭圆函数法得到了3种不同的解,首先对3种解下的非线性双稳开关特性分别进行比较,然后针对各个解下的影响开关特性的失谐量、耦合系数和光栅长度等参数进行分析,研究结果对于分析和构建非线性双稳FBG光开关具有一定的意义。
李丽君, 曹莹, 周秀丽, 于国亮
doaj  

利用线性啁啾光纤光栅进行脉冲压缩的研究

Guangtongxin yanjiu, 2000
利用光纤 -线性啁啾光纤光栅进行光脉冲的压缩 ,首先讨论了线性啁啾光纤光栅的色散特性 ,并给出耦合系数为反高斯函数的线性啁啾光纤光栅的色散特性 ;然后利用此种光纤光栅与正常色散光纤结合进行光脉冲的压缩 ,通过理论和数值分析 ,得出一简单设计规则 ;最后利用此规则设计一个压缩因子为 1 0的光纤 -线性啁啾光纤光栅压缩器。
林宁, 张晓光, 俞重远, 杨伯君
doaj  

[A coronary artery plaque segmentation method based on focal weighted accuracy loss function]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xiong F, Lu H, Li L, Jiang R.
europepmc   +1 more source

[Image classification of osteoarthritis based on improved shifted windows transformer and graph convolutional networks]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Jiang L, Cao H, Ma Z.
europepmc   +1 more source

[A study on heart sound classification algorithm based on improved Mel-frequency cepstrum coefficient feature extraction and deep Transformer]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Meng X, Zhang S.
europepmc   +1 more source

[Evaluation of an interpretable 12-lead ECG automatic diagnosis model based on deep feature fusion]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Lu X, Chen H, Wu Q, Wen Y, Liu G, Chen C.   +5 more
europepmc   +1 more source

细胞信号转导网络输入信号的最优实验设计 [PDF]

, 2007
Jia, J.F., Liu, T.Y., Wang, H., Yue, Hong   +3 more
core  

[A heterogeneous graph method integrating multi-layer semantics and topological information for improving drug-target interaction prediction]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen Z, Guo Y, Song S, Guo Q, Zhou D.
europepmc   +1 more source

一种面向社会关系的同行评议方法 [PDF]

, 2017
王贤慧, 袁军鹏
core  

[Drug repositioning prediction based on dynamic feature learning on heterogeneous graphs]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhu H, Guo Y, Xin X, Li C, Zhou D.
europepmc   +1 more source