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Research on aiming methods for small sample size shooting tests of two-dimensional trajectory correction fuse

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Defence Technology（防务技术） 2024年第3期33卷 506-517页

作者： Chen Liang Qiang Shen Zilong Deng Hongyun Li wenyang Pu Lingyun Tian Ziyang Lin School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China

The longitudinal dispersion of the projectile in shooting tests of two-dimensional trajectory corrections fused with fixed canards is extremely large that it sometimes exceeds the correction ability of the correction fuse actuator.The impact point easily deviates from the target,and thus the correction result cannot be readily evaluated.However,the cost of shooting tests is considerably high to conduct many tests for data collection.To address this issue,this study proposes an aiming method for shooting tests based on small sample size.The proposed method uses the Bootstrap method to expand the test data;repeatedly iterates and corrects the position of the simulated theoretical impact points through an improved compatibility test method;and dynamically adjusts the weight of the prior distribution of simulation results based on Kullback-Leibler divergence,which to some extent avoids the real data being"submerged"by the simulation data and achieves the fusion Bayesian estimation of the dispersion center.The experimental results show that when the simulation accuracy is sufficiently high,the proposed method yields a smaller mean-square deviation in estimating the dispersion center and higher shooting accuracy than those of the three comparison methods,which is more conducive to reflecting the effect of the control algorithm and facilitating test personnel to iterate their proposed structures and algorithms.;in addition,this study provides a knowledge base for further comprehensive studies in the future.

关键词： Two-dimensional trajectory correction fuse Small sample size test Compatibility test KL divergence Fusion bayesian estimation

Fully Bayesian analysis of the relevance vector machine classification for imbalanced data problem

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CAAI Transactions on Intelligence Technology 2023年第1期8卷 192-205页

作者： wenyang wang Yanna Sun Keran Li Jinglin wang Chong He Dongchu Sun School of Maritime Economics and Management Dalian Maritime UniversityDalianChina Collaborative Innovation Center for Transport Studies Dalian Maritime UniversityDalianChina Maritime Safety and Environmental Management World Maritime UniversityMalmöSweden Department of Statistics University of Nebraska-LincolnLincolnNebraskaUSA School of Statistics Faculty of Economics and ManagementEast China Normal UniversityShanghaiChina Department of Statistics University of MissouriColumbiaMissouriUSA

Relevance Vector Machine(RVM)is a supervised learning algorithm extended from Support Vector Machine based on the Bayesian sparsity model.Relevance Vector Machine classification suffers from theoretical limitations and computational inefficiency mainly because there is no closed-form solution for the posterior of the weight parameters.We propose two advanced Bayesian approaches for RVM classification,namely the Enhanced RVM and the Reinforced RVM,to perfect the theoretic framework of RVM and extend the algorithm to the imbalanced data problem,which has an arresting skew in data size between classes.First,the Enhanced RVM conducts a strict Bayesian sampling process instead of the approximation method in the original one to remedy its theoretic limitations,especially the nonconvergence of the iterations.Secondly,we conjecture that the hierarchical prior makes the Reinforced RVM achieve consistent estimations of the quantities of interest compared with the non-consistent estimations of the original RVM.Consistency is necessary for RVM classification since it makes the model more stable and localises the relevant vectors more accurately in the imbalanced data problem.The two-level prior also renders the Reinforced one competitive in the imbalanced data problem by building the inner connection of parameter dimensions and alloting a more vital relevance to the small class data weight parameter.The theoretic proofs and several numeric studies demonstrate the merits of our two proposed algorithms.

关键词： limitations problem render

Effectiveness and safety of combined nimotuzumab and S-1 chemotherapy with concurrent radiotherapy for locally advanced esophageal cancer in malnourished and elderly patients:A prospective phase Ⅱ study

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Chinese Journal of Cancer Research 2024年第3期36卷 270-281页

作者： Guojie Feng Jiao Li Nuo Yu Ziyu Zheng Xiongtao Yang Lei Deng Tao Zhang Wenqing wang wenyang Liu Jianyang wang Qinfu Feng Jima Lyu Zefen Xiao Zongmei Zhou Nan Bi Jianjun Qin Xin wang Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Department of Thoracic Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences & Peking Union Medical College

Objective: Definitive chemoradiotherapy(dCRT) is the standard treatment for unresectable locally advanced esophageal cancer. However, this treatment is associated with substantial toxicity, and most malnourished or elderly patients are unable to complete this therapy. Therefore, there is a need for a more suitable radiotherapy combination regimen for this population. This study was aimed to evaluate the efficacy and safety of a combination regimen comprising chemotherapy with nimotuzumab and S-1 and concurrent radiotherapy for patients with fragile locally advanced esophageal cancer with a high Nutritional Risk Screening 2002(NRS-2002) score.Methods: Eligible patients with unresectable esophageal carcinoma who had an NRS-2002 score of 2 or higher were enrolled. They were treated with S-1 and nimotuzumab with concurrent radiotherapy, followed by surgery or definitive radiotherapy. The primary endpoint was the locoregional control(LRC) rate.Results: A total of 55 patients who met the study criteria were enrolled. After completion of treatment, surgery was performed in 15 patients and radiotherapy was continued in 40 patients. The median follow-up period was 33.3[95% confidence interval(95% CI), 31.4-35.1)] months. The LRC rate was 77.2%(95% CI, 66.6%-89.4%) at 1 year in the entire population. The overall survival(OS) rate and event-free survival(EFS) rate were 57.5% and 51.5% at 3 years, respectively. Surgery was associated with better LRC [hazard ratio(HR)=0.16; 95% CI,0.04-0.70; P=0.015], OS(HR=0.19; 95% CI, 0.04-0.80; P=0.024), and EFS(HR=0.25; 95% CI, 0.08-0.75;P=0.013). Most adverse events were of grade 1 or 2, and no severe adverse events occurred.Conclusions: For malnourished or elderly patients with locally advanced esophageal cancer, radiotherapy combined with nimotuzumab and S-1 is effective and has a good safety profile.

关键词： Esophageal carcinoma squamous cell carcinoma nutritional risk score nimotuzumab S-1 definitive chemoradiotherapy

面神经减压术治疗贝尔面瘫和亨特综合征效果分析

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临床耳鼻咽喉头颈外科杂志 2024年第5期38卷 391-394页

作者：王璞张文阳王咏峰夏寅首都医科大学附属北京天坛医院耳鼻咽喉头颈外科北京100070 新疆医科大学第一附属医院昌吉分院耳鼻咽喉头颈外科

目的:总结分析面神经减压术治疗贝尔面瘫和亨特综合征的效果。方法:回顾性分析2015年10月至2022年10月接受面神经减压术治疗的65例面神经麻痹患者的临床资料:贝尔面瘫54例,亨特综合征11例;术前评估患者面瘫程度(HB分级)并完成面神经电图... 详细信息

目的:总结分析面神经减压术治疗贝尔面瘫和亨特综合征的效果。方法:回顾性分析2015年10月至2022年10月接受面神经减压术治疗的65例面神经麻痹患者的临床资料:贝尔面瘫54例,亨特综合征11例;术前评估患者面瘫程度(HB分级)并完成面神经电图(ENoG)、纯音测听、颞骨CT等检查。所有患者接受手术标准均为保守治疗至少1个月效果不佳,HB分级在Ⅳ级以上,ENoG下降超过90%,并且在发病3个月内接受经乳突入路面神经减压术。总结分析贝尔面瘫和亨特综合征两类患者术后面神经功能恢复效果;并且按病程(从发病到手术的间隔时间)分组:A组(发病30~60 d接受手术)15例,B组(发病61~90 d接受手术)50例,探讨手术时机对术后效果的影响。结果:贝尔面瘫患者术后恢复至Ⅰ~Ⅱ级42例(77.8%,42/54),亨特综合征患者术后恢复至Ⅰ~Ⅱ级7例(63.6%,7/11),经χ^(2)检验(P=0.54)两类患者比较差异无统计学意义。按病程分组,A组术后恢复至Ⅰ~Ⅱ级10例(66.7%,10/15);B组术后恢复至Ⅰ~Ⅱ级39例(78.0%,39/50),经χ^(2)检验(P=0.58)2组患者比较差异无统计学意义。结论:贝尔面瘫和亨特综合征患者在发病3个月内接受面神经减压术均可获得良好效果,且两类患者手术效果无显著差异。

关键词：贝尔面瘫亨特综合征面神经减压术手术时机

Immunomodulatory potential of exopolysaccharides from Lactiplantibacillus plantarum YY-112

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Food Science and Human Wellness 2024年

作者： Mengfan Luo Wanyi Zhou wenyang Tao Jianrong Xing Jingrui Li Yuxing Guo Ying Yang Institute of Food Science Zhejiang Academy of Agricultural Sciences School of Food Science and Pharmaceutical Engineering Nanjing Normal University

In vitro simulated colonic fermentation studies have shown the prebiotic potential of exopolysaccharides from Lactiplantibacillus plantarum YY-112 (YEPS). Its immunomodulatory effects and related mechanisms were systematically investigated in this study. We observed that YEPS intervene in immune responses and improve intestinal microbial structure in normal mice， including significantly increasing the relative abundance of Enterorhabdus and norank＿f＿＿norank＿o＿＿Clostridia UCG-014 as well as decreasing that of unclassified＿c＿＿Bacilli (P < 0.05). In the immunocompromised mouse model， YEPS decreased IL-6 levels (P < 0.05) and protected the spleen by regulating lymphocyte levels. YEPS preserved the intestinal barrier by improving Mucin 2， Zonula occludens protein 1， and Occludin expression. Moreover， YEPS significantly reduced the relative abundance of Bacillus， unclassified＿c＿＿Bacilli， Lachnoclostridium， Eubacterium＿xylanophilum＿group， and Desulfovibrio (P < 0.05)， potentially enhancing mice immunity by improving the intestinal microbiota associated with immune function. In conclusion， YEPS can be used as a natural functional extract with prebiotic effects that may improve host immunity. This provided the basis for the application of YEPS as a novel potential food additive.

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论个人生物识别信息保护中个体权利与公共利益的平衡

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法律科学（西北政法大学学报） 2024年第2期42卷 159-168页

作者：郑文阳西南政法大学行政法学院重庆401120

《个人信息保护法》是个人信息保护领域的基础性法律,个人生物识别信息则是个人信息保护类型中的特殊类型。个人生物识别信息主要包括三个核心要素,一是以自然人的生物或行为特征信息为基础,二是以身份信息为一般对比物,三是以算法匹配... 详细信息

《个人信息保护法》是个人信息保护领域的基础性法律,个人生物识别信息则是个人信息保护类型中的特殊类型。个人生物识别信息主要包括三个核心要素,一是以自然人的生物或行为特征信息为基础,二是以身份信息为一般对比物,三是以算法匹配为关键过程。据此,个人生物识别信息与一般的个人信息在权利属性、处理规则、商业化利用限制等保护层面上均存在差异。个人生物识别信息保护中,应当注重个体自由价值与公共管理价值的平衡,涉及静态与动态、个人利益与公共利益、私法保护与公法保护等诸多法律价值面向的具体法律制度的构建。为实现个人生物识别信息保护中个体权利和公共利益的平衡,应以合法性原则、安全原则和比例原则作为行政主体在处理个人生物识别信息过程中的执法原则。其中,合法性原则是基础性原则,是公共管理介入私人生活的正当性依据;安全原则是保障性原则,是抵御数据活动社会风险、保障个人信息安全的方向性路径;比例原则是核心性原则,是个人抵御行政机关过度侵入个人权益的防卫性理由。

关键词：个人隐私个人生物识别信息法律价值比例原则

土工离心模拟高速滑坡碎屑流冲击过程的科氏效应研究

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中国科学：技术科学 2024年第4期54卷 734-746页

作者：张贝李文阳黄雨长安大学地质工程与测绘学院西安710054 同济大学土木工程学院上海200092

土工离心模拟是土木工程、地质工程等相关领域的重要技术.但在高速滑坡碎屑流模拟方面的应用仍然受限,主要原因在于科氏效应的影响难以避免且缺乏详细研究.本文特别针对高速滑坡碎屑流冲击效应这一防灾减灾工程重要问题,开展了一系列的... 详细信息

土工离心模拟是土木工程、地质工程等相关领域的重要技术.但在高速滑坡碎屑流模拟方面的应用仍然受限,主要原因在于科氏效应的影响难以避免且缺乏详细研究.本文特别针对高速滑坡碎屑流冲击效应这一防灾减灾工程重要问题,开展了一系列的物理离心试验与数值试验.相关结果表明,科氏加速度的方向对高速滑坡碎屑流冲击过程的影响更为显著,发散科氏作用强化了滑坡碎屑流与拦挡结构的相互作用,表现在其具有更高的流动性、更强的冲击效应、更大的堆积体高度.离心应力水平对压缩科氏效应作用效果的影响更为显著,且随着离心应力水平的增大,模拟结果向着无科氏条件影响结果的方向发展.因此,高速滑坡碎屑流冲击效应的土工离心模拟建议在发散科氏条件下开展,且不必刻意选取较小的离心应力水平.

关键词：离心模拟技术高速滑坡碎屑流冲击过程科氏效应离散元模拟

联合虚拟现实环境和脑电信号的情绪识别研究进展

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生物医学工程学杂志 2024年第2期41卷 389-397页

作者：杨文阳(综述) 徐可欣(审校) 西安石油大学计算机学院西安710065 现代教学技术教育部重点实验室西安710062

情绪识别是指通过分析语音、表情、生理指标等多种信号,来判断和识别个体当前的情绪状态。将脑电(EEG)信号和虚拟现实(VR)技术用于情绪识别研究,有助于更准确地了解人类情绪变化,从而应用于心理治疗、教育培训等领域,提升人们的生活质... 详细信息

情绪识别是指通过分析语音、表情、生理指标等多种信号,来判断和识别个体当前的情绪状态。将脑电(EEG)信号和虚拟现实(VR)技术用于情绪识别研究,有助于更准确地了解人类情绪变化,从而应用于心理治疗、教育培训等领域,提升人们的生活质量。然而联合EEG信号和VR环境的情绪识别研究尚缺乏综述文献的全面梳理总结,为此本文总结归纳了近五年相关研究,首先介绍了VR和EEG信号情绪识别的相关理论;其次重点分析了VR环境中EEG信号情绪识别的情绪诱发、特征提取和分类识别的方法;总结了该研究的应用方向;最后对未来的发展趋势进行展望。通过本文综述,期望可为相关领域的研究工作者提供参考。

关键词：情绪识别脑电信号虚拟现实技术机器学习

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曾侯得编钟与周代编钟音列的发展

江汉考古 2024年第1期 78-81页

作者：曾攀余文扬湖北省博物馆湖北武汉430074

曾侯得编钟乐音体系为bE宫系统六声十八律,基本音级为徵-羽-宫-商-角-和,也可以被看成bE宫五声音列和bA宫五声音列集合,因此出现了bE宫“和”声,是曾国编钟序列的重要环节。参考其他春秋中期编钟的测音数据,推测编钟旋宫功能的发展使其... 详细信息

曾侯得编钟乐音体系为bE宫系统六声十八律,基本音级为徵-羽-宫-商-角-和,也可以被看成bE宫五声音列和bA宫五声音列集合,因此出现了bE宫“和”声,是曾国编钟序列的重要环节。参考其他春秋中期编钟的测音数据,推测编钟旋宫功能的发展使其音列出现不同宫五正声的集合,从而产生了超出五正声的声,这为探究曾侯乙编钟“十二声”系统的形成过程提供了线索。

关键词：曾侯得编钟 “和” 五正声旋宫