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Detection accuracy of target accelerations based on vortex electromagnetic wave in keyhole space

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Chinese Physics B 2024年第2期33卷 283-290页

作者：郭凯雷爽雷艺周红平郭忠义 School of Computer and Information Hefei University of TechnologyHefei 230009China

The influence of the longitudinal acceleration and the angular acceleration of detecting target based on vortex electromagnetic waves in keyhole space are *** spectrum spreads of different orbital angular momentum(OAM)modes in different non-line-of-sight situations are *** errors of target accelerations in detection are calculated and compared based on the OAM spectra spreading by using two combinations of composite OAM modes in the keyhole *** to the research,the effects about spectrum spreads of higher OAM modes are more *** error in detection is mainly affected by OAM spectrum spreading,which can be reduced by reasonably using different combinations of OAM modes in different practical *** above results provide a reference idea for investigating keyhole effect when vortex electromagnetic wave is used to detect accelerations.

关键词： vortex electromagnetic waves detect accelerations keyhole space spectrum spread

Invisible and semi-invisible decays of bottom baryons

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Chinese Physics C 2024年第8期48卷 127-139页

作者： Yong Zheng Jian-Nan Ding Dong-Hao Li lei-yi Li Cai-Dian Lü Fu-Sheng Yu MOE Frontiers Science Center for Rare Isotopes Lanzhou UniversityLanzhou 730000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Center for High Energy Physics Peking UniversityBeijing 100871China Institute of High Energy Physics CASBeijing 100049China School of Physical Sciences University of Chinese Academy of SciencesBeijing 101408China

The similar densities of dark matter and baryons in the universe imply that they may arise from the same ultraviolet model.B-Mesogenesis,which assumes dark matter is charged under the baryon number,attempts to simultaneously explain the origin of baryon asymmetry and dark matter in the *** particular,B-Mesogenesis may induce bottom-baryon decays into invisible or semi-invisible final states,which provide a distinctive signal for probing this *** this work,we systematically study the invisible decays of bottom baryons into dark matter and the semi-invisible decays of bottom baryons into a meson or a photon together with a dark matter *** particular,the fully invisible decay can reveal the stable particles in *** QCD-based frameworks are used to calculate the hadronic matrix elements under the B-Mesogenesis *** estimate the constraints on the Wilson coefficients or the product of some new physics couplings with the Wilson coefficients according to the semi-invisible and invisible decays of bottom baryons detectable at future colliders.

关键词： baryon asymmetry dark matter B-Mesogenesis invisible and semi-invisible decay bottom baryons

Assessing recent recurrence after hepatectomy for hepatitis Brelated hepatocellular carcinoma by a predictive model based on sarcopenia

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World Journal of Gastroenterology 2024年第12期30卷 1727-1738页

作者： Hong Peng Si-yi lei Wei Fan Yu Dai yi Zhang Gen Chen Ting-Ting Xiong Tian-Zhao Liu Yue Huang Xiao-Feng Wang Jin-Hui Xu Xin-Hua Luo Department of Infectious Diseases Guizhou Provincial People’s HospitalGuiyang 550002Guizhou ProvinceChina Department of Hepatobiliary Surgery Guizhou Provincial People’s HospitalGuiyang 550002Guizhou ProvinceChina

BACKGROUND Sarcopenia may be associated with hepatocellular carcinoma(HCC)following *** traditional single clinical variables are still insufficient to predict *** still lack effective prediction models for recent recurrence(time to recurrence5 cm(HR=2.222,95%CI:1.285-3.842,P<0.05),and hepatitis B virus DNA level≥2000 IU/mL(HR=2.1,95%CI:1.407-3.135,P<0.05)were independent risk factors associated with postoperative recurrence of *** on the sarcopenia to assess the RFS model of hepatectomy with hepatitis B-related liver cancer disease(SAMD)was established combined with other the above risk *** area under the curve of the SAMD model was 0.782(95%CI:0.705-0.858)in the training cohort(sensitivity 81%,specificity 63%)and 0.773(95%CI:0.707-0.838)in the validation ***,a SAMD score≥110 was better to distinguish the high-risk group of postoperative recurrence of *** Sarcopenia is associated with recent recurrence after hepatectomy for hepatitis B-rel

关键词： Alpha-fetoprotein Hepatitis B virus Hepatectomy Hepatocellular carcinoma Nomogram Predictive models Recurrence Recurrence-free survival Risk factors Sarcopenia

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一种相控阵雷达横滚角标校方法

数据采集与处理 2024年第1期39卷 132-139页

作者：陈皓雷艺中国电子科技集团公司第三十八研究所孔径阵列与空间探测安徽省重点实验室合肥230031 合肥工业大学计算机与信息学院合肥230601

提出了一种相控阵雷达横滚角标校方法,利用相控阵雷达横滚角与目标俯仰角测量误差之间的近似线性关系,结合雷达自带的角度测量误差标定手段,快速地计算得到雷达的横滚角,进而大幅提高相控阵雷达的角度测量精度。实验证明,使用该方法计... 详细信息

提出了一种相控阵雷达横滚角标校方法,利用相控阵雷达横滚角与目标俯仰角测量误差之间的近似线性关系,结合雷达自带的角度测量误差标定手段,快速地计算得到雷达的横滚角,进而大幅提高相控阵雷达的角度测量精度。实验证明,使用该方法计算得到的横滚角与使用激光测量仪器测得的横滚角结果精度相当,完全能够满足高精度测量雷达的需求。

关键词：相控阵雷达横滚角标校测量误差

Unveiling the secrets of gastrointestinal mucous adenocarcinoma survival after surgery with artificial intelligence:A population-based study

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2404-2418页

作者： Jie Song Xiang-Xiu Yan Fang-Liang Zhang Yong-yi lei Zi-yin Ke Fang Li Kai Zhang Yu-Qi He Wei Li Chao Li Yuan-Ming Pan Department of Gastroenterology Dongying People’s HospitalDongying Hospital of Shandong Provincial Hospital GroupDongying 257000Shandong ProvinceChina Gastrointestinal Surgery Department Suining Central HospitalSuining 629000Sichuan ProvinceChina Obstetrical Department Suining Central HospitalSuining 629000Sichuan ProvinceChina School of Medicine Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107Guangdong ProvinceChina Department of Pathology Aerospace Center HospitalPeking University Aerospace School of Clinical MedicineBeijing 100049China General Department Beijing Chest HospitalCapital Medical University/Beijing Tuberculosis and Thoracic Tumor Research InstituteBeijing 101149China Department of Gastroenterology Beijing Chest HospitalCapital Medical University/Beijing Tuberculosis and Thoracic Tumor Research InstituteBeijing 101149China Department of Thoracic Surgery Sichuan Academy of Medical Sciences and Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610072Sichuan ProvinceChina Department of Gastroenterology Aerospace Center HospitalPeking University Aerospace School of Clinical MedicineBeijing 100049China Cancer Research Center Beijing Chest HospitalCapital Medical University/Beijing Tuberculosis and Thoracic Tumor Research InstituteBeijing 101149China

BACKGROUND Research on gastrointestinal mucosal adenocarcinoma(GMA)is limited and controversial,and there is no reference tool for predicting postoperative *** To investigate the prognosis of GMA and develop predictive *** From the Surveillance,Epidemiology,and End Results database,we collected clinical information on patients with *** random sampling,the patients were divided into the discovery(70%of the total,for model training),validation(20%,for model evaluation),and completely blind test cohorts(10%,for further model evaluation).The main assessment metric was the area under the receiver operating characteristic curve(AUC).All collected clinical features were used for Cox proportional hazard regression analysis to determine factors influencing GMA’s *** This model had an AUC of 0.7433[95% confidence intervals(95%CI):0.7424-0.7442]in the discovery cohort,0.7244(GMA:0.7234-0.7254)in the validation cohort,and 0.7388(95%CI:0.7378-0.7398)in the test *** packaged it into Windows software for doctors’use and uploaded *** gastric adenocarcinoma had the worst prognosis,and these were protective factors of GMA:Regional nodes examined[hazard ratio(HR):0.98,95%CI:0.97-0.98,P<0.001]and chemotherapy(HR:0.62,95%CI:0.58-0.66,P<0.001).CONCLUSION The deep learning-based tool developed can accurately predict the overall survival of patients with GMA *** surgery,chemotherapy,and adequate lymph node dissection during surgery can improve patient outcomes.

关键词： Deep learning Gastrointestinal mucous adenocarcinoma Overall survival Surgery Clinical tool

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衰老与年龄相关性黄斑变性

中华实验眼科杂志 2024年第1期42卷 76-79页

作者：雷艺(综述) 颜华(审校) 天津医科大学总医院眼科天津医科大学天津300052

随着人口老龄化,与衰老相关的眼病发病率也逐渐升高,尤其是年龄相关性黄斑变性。近年来在年龄相关性黄斑变性(AMD)的治疗方面取得了一定的进展,但其仍然是老年人视力障碍和盲的主要原因之一。目前,大量研究认为AMD主要由衰老和炎症两方... 详细信息

随着人口老龄化,与衰老相关的眼病发病率也逐渐升高,尤其是年龄相关性黄斑变性。近年来在年龄相关性黄斑变性(AMD)的治疗方面取得了一定的进展,但其仍然是老年人视力障碍和盲的主要原因之一。目前,大量研究认为AMD主要由衰老和炎症两方面因素共同作用造成的。尽管更多的研究聚焦于炎症对AMD的作用,衰老作为其重要相关因素,也同样值得我们深入探究。本文就衰老造成的物质堆积、吞噬功能异常、线粒体功能异常和氧化应激损伤等与AMD的发生和发展的密切关系进行综述,以期提高临床医生对AMD的认知。

关键词：衰老年龄相关性黄斑变性 Bruch膜氧化应激

基于ASIT-UKF算法的锂电池荷电状态估计

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北京工业大学学报 2024年第6期50卷 683-692页

作者：陈阳舟伊磊北京工业大学信息学部北京100124

针对无迹卡尔曼滤波(unscented Kalman filter,UKF)算法估计锂电池荷电状态(state of charge,SOC)时精度低、稳定性差、产生的sigma点过多导致计算难度大等不足,提出一种基于自适应球形不敏变换方式的无迹卡尔曼滤波(unscented Kalman f... 详细信息

针对无迹卡尔曼滤波(unscented Kalman filter,UKF)算法估计锂电池荷电状态(state of charge,SOC)时精度低、稳定性差、产生的sigma点过多导致计算难度大等不足,提出一种基于自适应球形不敏变换方式的无迹卡尔曼滤波(unscented Kalman filter based on adaptive spherical insensitive transformation,ASIT-UKF)算法。该算法通过使用球形不敏变换方式选择权系数以及初始化一元向量对sigma点的产生进行选取。与UKF算法相比,ASIT-UKF算法产生的sigma点减少近50%,使得算法的计算复杂度大大降低。同时,将产生的所有sigma点进行单位球形面上的归一化处理,提高了数值的稳定性。考虑到实际运行中锂电池系统噪声干扰带来的不确定性,加入Sage-Husa自适应滤波器对不确定性噪声的干扰进行实时更新和修正,以达到提高在线锂电池SOC估计精度的目的。最后,将均方根误差和最大绝对误差计算公式引入到性能估计指标中。实验结果表明,ASIT-UKF算法在准确度、鲁棒性和收敛性方面具有优越的性能。

关键词：锂电池荷电状态(state of charge,SOC)估计球形不敏变换 Sage-Husa滤波无迹卡尔曼滤波(unscented Kalman filter,UKF)算法均方根误差

基于FastestDet的多目标靶定位方法

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现代电子技术 2024年第16期47卷 97-102页

作者：易磊易雅雯华中科技大学电气与电子工程学院湖北武汉430074

为解决无人机在自动多目标靶定位领域计算资源有限、实时性要求高、定位准确率有限等问题,提出一种基于FastestDet的多目标靶定位方法。首先,通过轻量级目标检测算法(FastestDet算法)实现目标靶检测;其次,对所获得的目标靶图像进行透视... 详细信息

为解决无人机在自动多目标靶定位领域计算资源有限、实时性要求高、定位准确率有限等问题,提出一种基于FastestDet的多目标靶定位方法。首先,通过轻量级目标检测算法(FastestDet算法)实现目标靶检测;其次,对所获得的目标靶图像进行透视变换,并截取仅含目标靶的透视变换图像;再对图像进行去噪、灰度化等处理,通过轮廓检测获得目标靶心圆轮廓后,计算透视变换后的靶心坐标;最后,通过逆变换计算原采集图像实际目标靶心坐标。实验结果表明:所提方法采用的目标检测算法网络参数最小,单张图像处理时间最短,占用计算资源少,实时性高,识别准确率达到90.4%,目标靶识别准确率较高;与其他方法相比,该方法的综合定位误差最大可降低92.09%,定位准确率高,可行性强。

关键词：无人机目标靶定位 FastestDet算法目标检测透视变换轮廓检测

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三端口直流变换器的光储实验平台设计

实验室研究与探索 2024年第2期43卷 54-59页

作者：易磊张蓉华中科技大学电气与电子工程学院武汉430074

针对光储实验平台硬件封闭、占地空间大的问题,开发了一套基于项目驱动、模块化的三端口直流变换器实验平台。首先构建基于三端口直流变换器的实验平台,其次设计光伏、储能及负载的功率变换拓扑,然后建立变换器控制系统并研究控制策略;... 详细信息

针对光储实验平台硬件封闭、占地空间大的问题,开发了一套基于项目驱动、模块化的三端口直流变换器实验平台。首先构建基于三端口直流变换器的实验平台,其次设计光伏、储能及负载的功率变换拓扑,然后建立变换器控制系统并研究控制策略;设计主电路电感、电容参数及系统电路,进行控制系统软件设计;最后完成软硬件实验平台测试与分析。实验结果表明,三端口直流变换器负载电压调整率小于2%,系统效率高于94%,光伏侧实现最大功率点跟踪(MPPT),蓄电池实现稳定充放电功能。

关键词：储能模块化三端口直流变换器最大功率跟踪