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RADAR HRRP RECOGNITION BASED ON THE MINIMUM KULLBACK-LEIBLER DISTANCE CRITERION

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Journal of Electronics(China) 2007年第2期24卷 199-203页

作者： Yuan li liu Hongwei bao Zheng Key Lab for Radar Signal Processing Xidian University Xi＇an 710071 China

To relax the target aspect sensitivity and use more statistical information of the High Range Resolution Profiles (HRRPs), in this paper, the average range profile and the variance range profile are extracted together as the feature vectors for both training data and test data representa-tion. And a decision rule is established for Automatic Target Recognition (ATR) based on the mini-mum Kullback-Leibler Distance (KLD) criterion. The recognition performance of the proposed method is comparable with that of Adaptive Gaussian Classifier (AGC) with multiple test HRRPs, but the proposed method is much more computational efficient. Experimental results based on the measured data show that the minimum KLD classifier is effective.

关键词： High Range Resolution Profile (HRRP) Automatic Target Recognition (ATR) Kullback-Leibler Distance (KLD) Adaptive Gaussian Classifier (AGC)

THE OCCURRENCE OF ANOMALY THERMODYNAMICS PHENOMENON IN TRACE PHYSICO-CHEMICAL SYSTEM

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Chinese Journal of Oceanology and limnology 1984年第2期2卷 125-132页

作者： Gu Hongkan, liu Mingxing, li Guoji, bao Wanyou and Zhang Shoulin(Institute of Oceanology, Academia Sinica, Qingdao) 1. Institute of Oceanology Academia Sinica Qingdao

The experimental results show that, when the water is evaporated, the trace metal ions Zn2+ etc contained in this water can transfer in 100% concentration to water vapor under the limiting concentration of transfer. Therefore, the free energy, △Go, can not be used directly to predict the feasibility of this trace concentration physico-chemical process. Occurrence of the thermodynamics anomaly phenomenon in trace concentration physico-chemical system is presented experimentally in the present paper.

关键词： Mean THE OCCURRENCE OF ANOMALY THERMODYNAMICS PHENOMENON IN TRACE PHYSICO-CHEMICAL SYSTEM

SOME TRACE METAL IONS IN NATURAL WATERS OF TIANSHAN MOUNTAINS AND QINGHAI-TIBET PLATEAU- AN EVIDENCE OF THE HOMOGENEOUS DISTRIBUTION OF TRACE METAL IONS IN NATURAL WATERS

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Chinese Journal of Oceanology and limnology 1984年第1期2卷 81-87页

作者： Gu Hongkan, liu Mingxing, li Guoji, bao Wanyou and Zhang Shoulin(Institute of Oceanology, Academia Sinica, Qingdao) 1. Institute of Oceanology Academia Sinica Qingdao

The concentrations of Zn, Cd, Pb, Cu ions are shown to be similar in natural waters of Tianshan Mountains and Qinghai-Tibet plateau and to be similar in those of the sea water. The average and variability of concentrations of trace metal ions in fresh water are Zn 5.7±1.5, Cd 0.092±0.038, Pb 0.048±0.011, and Cu 1.1±0.20 ppb. The average concentrations in the East China Sea are Zn 7.3 （5.5 in 1976）, Cd 0.12, Pb 0.036, and Cu 0.94 ppb. It proves that the homogeneous distribution of trace metal ions （free ion and unstable complexes） in natural waters is present in the nature as a rule.

关键词： AN EVIDENCE OF THE HOMOGENEOUS DISTRIBUTION OF TRACE METAL IONS IN NATURAL WATERS SOME TRACE METAL IONS IN NATURAL WATERS OF TIANSHAN MOUNTAINS AND QINGHAI-TIBET PLATEAU

Influence of nutritional care during pregnancy on weight control and maternal and infant outcomes in patients with pregnancy-induced hypertension

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South China Journal of Cardiology 2024年第3期25卷 156-161页

作者： liu Xiao-qing liu li-bao YANG Zhu-li Department of Obstetrics Sanming Second HospitalSanming City 366099Fujian ProvinceChina

Background Preeclampsia is a common disease in pregnant women,characterized by clinical manifestations such as hypertension and proteinuria,which not only seriously affect the safety of pregnant women,but also jeopardize the safety of the fetus,threatening maternal and infant ***,in addition to routine hypoglycemic and antihypertensive treatments,auxiliary treatment methods such as exercise and diet are gradually gaining clinical ***,this study aimed to observe the effects of comprehensive nutrition care during pregnancy on weight control during pregnancy and maternal and infant outcomes in patients with pregnancy-induced hypertension *** A total of 100 cases of preeclampsia patients in our hospital from August 2021 to May 2022 were selected and randomly divided into a nutrition group and a conventional group,with 50 cases in each *** conventional group received routine care,while the nutrition group received additional comprehensive nutrition care during pregnancy based on routine *** weight control and blood pressure control during pregnancy and maternal and infant outcomes of the two groups were *** The weight control during pregnancy in the nutrition group was significantly better than that in the conventional group(Plic and diastolic blood pressure between the two groups before intervention(P>0.05),but both systolic and diastolic blood pressure in both groups were lower after intervention,with the nutrition group significantly lower than the conventional group(P<0.05).The incidence of neonatal asphyxia,placental abruption,postpartum hemorrhage,and cesarean section in the nutrition group was significantly lower than that in the conventional group(P<0.05).Conclusions Comprehensive nutrition care during pregnancy can effectively control weight and blood pressure levels in patients with preeclampsia,and improve maternal and infant outcomes.[S Chin

关键词： Comprehensive nutrition care during pregnancy Preeclampsia Weight control during pregnancy Maternal and infant outcomes

Spin Dynamics in (111) GaAs/AlGaAs Undoped Asymmetric Quantum Wells

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Chinese Physics Letters 2012年第9期29卷 159-161页

作者： WANG Gang YE Hui-Qi SHI Zhen-Wu WANG Wen-Xin MARIE Xavier BALOCCHI Andrea AMAND Thierry liu bao-li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 Universitéde Toulouse INSA-CNRS-UPSLPCNO135 avenue de Rangueil31077 ToulouseFrance

The electron spin dynamics is investigated by the time-resolved Kerr rotation technique in a pair of special GaAs/AlGaAs asymmetric quantum well samples grown on(111)-oriented substrates,whose structures are the same except for their opposite directions of potential asymmetry.A large difference of spin lifetimes between the two samples is observed at low *** difference is interpreted in terms of a cancellation effect between the Dresselhaus spin-splitting term in the conduction band and another term induced by interface inversion *** deviation decreases with the increasing temperature,and almost disappears when T>100 K because the cubic Dresselhaus term becomes more important.

关键词： Quantum conduction directions

IMPROVED MODEL FOR THREE DIMENSIONAL NONliNEAR WATER WAVE FORCE PREDICTION

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Journal of Hydrodynamics 1990年第1期2卷 56-65页

作者： Lu Yu-lin liu Wen-yan li bao-yuan Dalian University of Technology,Dalian 116024,P.R.China

An improved model for numerically predicting nonlinear wave forces exerted on an offshore structure is pro- *** a previous work[9],the authors presented a model for the same purpose with an open boundary condi- tion imposed,where the wave celerity has been defined ***,the value of wave celerity is time-de- pendent and varying with spatial *** the present model the wave celerity is evaluated by an upwind dif- ference scheme,which enables the method to be extended to conditions of variable finite water depth,where the value of wave celerity varies with time as the wave approaches the offshore *** finite difference method incorporated with the time-stepping technique in time domain developed here makes the numerical evolution effec- tive and *** examples on interactions between a surface-piercing vertical cylinder and a solitary wave or a cnoidal wave train demonstrates the validity of this program.

关键词： Wave Pro IMPROVED MODEL FOR THREE DIMENSIONAL NONliNEAR WATER WAVE FORCE PREDICTION

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基于遗传算法的SAR图像多尺度分割

计算机应用 2008年第4期28卷 990-992页

作者：刘保利西北工业大学计算机科学技术学院西安710072

基于最大期望(EM)算法与遗传算法(GA),提出一种有效的多尺度SAR图像无监督分割方法。该方法首先利用混合多尺度自回归(MMAR)模型描述SAR图像中由于雷达斑点所引起的不同尺度和同一尺度内像素之间的统计相依性;然后将GA与EM结合给出MMAR... 详细信息

基于最大期望(EM)算法与遗传算法(GA),提出一种有效的多尺度SAR图像无监督分割方法。该方法首先利用混合多尺度自回归(MMAR)模型描述SAR图像中由于雷达斑点所引起的不同尺度和同一尺度内像素之间的统计相依性;然后将GA与EM结合给出MMAR模型的参数估计算法。这种算法利用最小描述长度(MDL)准则,能够选择模型的分量数;最后利用Bayes分类器实现图像的分割。该方法集遗传算法和EM算法的优点,对初始值有较少的敏感性,避免局部最优解,提高了分割精度。实验结果表明GA-EM方法优于EM算法。

关键词：最大期望算法遗传算法混合多尺度模型 SAR图像分割

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关于***因子分拆问题

纺织高校基础科学学报 2012年第4期25卷 407-409页

作者：刘宝利西安航空职业技术学院计算机工程系陕西西安710089

对于***因子分拆,利用初等及组合方法研究一些特殊整数的所有不同分拆个数的计算问题,并给出一个确切的计算公式,从而解决了Amarnath Murthy及Charles Ash-bacher提出的2个猜想!

关键词： F Smarandache因子分拆猜想初等方法组合方法恒等式

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有效的SAR图像多尺度分类算法

计算机工程与设计 2008年第6期29卷 1364-1366页

作者：刘保利西北工业大学计算机科学技术学院陕西西安710072

为提高分类精度,提出一种基于最大期望(EM)与遗传(GA)算法的多尺度SAR图像无监督分类方法。利用多尺度自回归(MAR)模型描述SAR图像中不同尺度之间的统计相依性,提取多尺度特征。应用混合模型描述多尺度特征,并将GA算法与EM算法相结合给... 详细信息

为提高分类精度,提出一种基于最大期望(EM)与遗传(GA)算法的多尺度SAR图像无监督分类方法。利用多尺度自回归(MAR)模型描述SAR图像中不同尺度之间的统计相依性,提取多尺度特征。应用混合模型描述多尺度特征,并将GA算法与EM算法相结合给出混合模型的参数估计算法,利用最小描述长度(MDL)准则选择模型的分量数。最后使用Bayes分类器实现了图像的分类与分割。该方法集EM算法和GA算法结合后的优点,对设定初值有较少的敏感性,因而避免了局部最优解。应用于SAR图像的实验表明,在分割精度上GA-EM方法优于MAR模型的算法。

关键词： GA-EM算法多尺度混合模型 Bayes分类器 SAR图像分类