Guangtongxin yanjiu, 2008 文章简单介绍了光差分正交相移键控（DQPSK）调制格式的调制和解调方式,对光DQPSK的预编码也进行了必要的说明。使用软件Matlab构建了光DQPSK背靠背系统,得到了不同的DQPSK调制的频谱图和眼图,并对仿真结果进行了验证,就NRZ-DQPSK和RZ33-DQPSK的差异进行了比较。
刘慧洋 +4 more
doaj
, 2007 20世纪80年代以来我国经济的每次波动,中国政府都实施了相机抉择型财政政策。1998年开始的"积极财政政策",改变了中国财政政策的运作模式,使之从被动型赤字财政政策转到主动型上来了,大大加强了相机抉择型财政政策运作的分量,取得了一定的甚至很大的效果,但负作用也显而易见,增强了经济运行对财政政策相机抉择性的依赖。这就需要对中国的财政政策实践重新进行思考。本文运用时间一致性理论,对中国财政政策与经济波动的关系问题进行了分析,其结论为:财政政策中导致经济波动的主要因素是政府支出 ...
康锋莉, 张馨
core
The proposed method introduces a parameter determination approach based on the minimum Fractal box dimension (FBD) of Variational Mode Decomposition (VMD) components, aiming to address the issue of manual determination of VMD decomposition layers in ...
Min, Yu, Yan, Yu, Yuhang, Pei
core
[Incomplete multimodal bone tumor image classification based on feature decoupling and fusion]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZeng Q +5 more
europepmc +1 more source
[CRAKUT:integrating contrastive regional attention and clinical prior knowledge in U-transformer for radiology report generation]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLiang Y +5 more
europepmc +1 more source
[Preparation and application of magnetic covalent organic framework： open experimental teaching practice of instrumental analysis]. [PDF]
Se PuJiang DD, Jia Q.
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[Pentosan polysulfate alleviates cyclophosphamide-induced interstitial cystitis/bladder pain syndrome in mice by modulating gut microbiota and bile acid metabolism]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhu Y, Zhu Z, Wu P.
europepmc +1 more source
[3D visualization-based classification of left intrahepatic vessels and its application in precision hepatectomy]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZheng J, Wang Z, Hu X, He X, Fan Y.
europepmc +1 more source
[AConvLSTM U-Net: a multi-scale jaw cyst segmentation model based on bidirectional dense connection and attention mechanism]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLi S, Wang Z, Chan S, Zhou X.
europepmc +1 more source
[Analysis of four brominated flame retardants in mineral water and instant-noodle-bowl samples by magnetic solid-phase extraction coupled with liquid chromatography using magnetic carbon aerogel as adsorbent]. [PDF]
Se PuNie QR, Ni M, Xu JY, Shi Y, Jiang HM.
europepmc +1 more source