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时滞和阶次未知的双率采样输出误差系统辨识

控制与决策 2024年第9期39卷 3006-3012页

作者：焦帆曹余庆谢莉江南大学物联网工程学院江苏无锡214122 无锡爱德旺斯科技有限公司江苏无锡214161

针对时滞和阶次未知的双率采样输出误差系统,在有限采样数据条件下,提出一种辅助模型正交匹配追踪迭代辨识算法.首先,根据双率采样数据建立目标系统的辨识模型;其次,考虑到输入通道的时滞与系统阶次未知,采用过参数化方法,通过设置足够... 详细信息

针对时滞和阶次未知的双率采样输出误差系统,在有限采样数据条件下,提出一种辅助模型正交匹配追踪迭代辨识算法.首先,根据双率采样数据建立目标系统的辨识模型;其次,考虑到输入通道的时滞与系统阶次未知,采用过参数化方法,通过设置足够长的无噪输出数据和输入数据回归项,得到一个稀疏度为待辨识参数个数的稀疏系统;然后,结合辅助模型思想和压缩感知中的稀疏恢复方法实现参数向量和无噪输出的交互估计,即利用正交匹配追踪算法估计参数向量,再利用该估计值构建辅助模型计算无噪输出,并以此更新参数估计向量;最后,根据得到的参数向量结构计算系统的阶次与通道的时滞.仿真实验表明,所提出算法能够利用少量采样数据实现系统参数、时滞和阶次的高精度联合估计.

关键词：双率采样系统参数辨识时滞估计阶次估计正交匹配追踪辅助模型

Effect of sequential nursing care combined with communication intervention on visual recovery and pain after cataract ultrasound emulsification

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World Journal of Clinical Cases 2024年第27期12卷 6087-6093页

作者： Jing-cao Wang qing Zhang Man-Rong Yu Yun-Xia Yang Hui-Min Jiang Department of Central Operating Room The Second Affiliated Hospital of Anhui Medical UniversityHefei 230601Anhui ProvinceChina Department of Ophthalmology The Second Affiliated Hospital of Anhui Medical UniversityHefei 230601Anhui ProvinceChina

BACKGROUND Cataracts are a common ophthalmic disease and postoperative vision recovery is crucial to patient quality of *** and efficient care models play an impor-tant role in promoting vision *** To evaluate the clinical effectiveness of procedural nursing care combined with communication intervention in vision recovery after cataract ultrasound *** A randomized controlled study was conducted on 100 patients with cataracts who underwent ultrasound emulsification *** were randomly assigned to an experimental group or a control *** experimental group received procedural nursing combined with Connect,Introduce,Communicate,Ask,Respond,Exit(CICARE)communication intervention,whereas the control group received conventional *** effectiveness of the nursing model was assessed by comparing differences in vision recovery,pain scores,and mental health status between the two *** It was found that over time the visual acuity of patients in both groups gradually recovered and patients in the experimental group had lower pain scores and superior mental health status than the control group(P<0.05).CONCLUSION Procedural nursing combined with CICARE communication intervention has positive effects on vision recovery in patients after cataract ultrasound emulsification.

关键词： Sequential nursing Communication intervention CICARE Cataract ultrasound emulsification Vision restoration

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大孔径太赫兹波成像光学系统设计

中国光学（中英文） 2024年第2期17卷 374-381页

作者：曹一青沈志娟莆田学院机电与信息工程学院福建莆田351100 福建省激光精密加工工程技术研究中心福建莆田351100

太赫兹波具有高穿透性、低能性及指纹谱性等特征,被广泛应用于探测领域,因此,设计太赫兹波成像光学系统具有重要的意义和广泛的应用前景。首先,以四块透镜构成的天塞物镜为参考结构,应用近轴光学系统像差理论构建系统像差平衡方程,给出... 详细信息

太赫兹波具有高穿透性、低能性及指纹谱性等特征,被广泛应用于探测领域,因此,设计太赫兹波成像光学系统具有重要的意义和广泛的应用前景。首先,以四块透镜构成的天塞物镜为参考结构,应用近轴光学系统像差理论构建系统像差平衡方程,给出了系统初始结构参数求解函数和方法,再结合光学设计软件进一步校正系统像差,最终设计了一种用于太赫兹波探测的大孔径光学成像系统。该光学系统由4块同轴折射透镜构成,焦距为70 mm,F数为1.4,全视场角为8°,在奈奎斯特频率10 lp/mm处全视场角范围内的调制传递函数(MTF)值均大于0.32,各视场内的弥散斑均方根(RMS)半径均小于艾里斑半径。最后对系统各种公差进行分析和讨论。设计结果表明,本文设计的太赫兹波探测光学成像系统具有孔径大、结构简单且紧凑、成像质量较好且加工性易于实现等特点,满足设计要求,它在太赫兹波段高分辨率探测领域具有重要应用价值。

关键词：光学系统设计太赫兹波大孔径像差平衡公差分析

Corrigendum to"SEMA4D acts as a novel oligogenic pathogenic gene of idiopathic hypogonadotropic hypogonadism through the PlexinB1/MET/RND1/RHOA/RAF1/MAPK signaling axis"[Genes&Diseases 10(2023)65-68]

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Genes & Diseases 2024年第4期11卷 428-429页

作者： Daoqi Wang Yonghua Niu Jiahong Tan Jiaxin Wang le Ling Yinwei Chen Jianan Gong Hao Xu qing Ling Jianhe Liu Jihong Liu Department of Urology The Second Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650033China Department of Urology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Department of Pediatric Surgery Tongji HospitalTongji Medical CollegeWuhanHubei 430030China Department of Obstetrics and Gynecology The First People's Hospital of Yunnan ProvinceKunmingYunnan 650034China Department of Urology First Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiang 150007China

The authors regret to correct the error in the order of the institute of the first author,which should go as the following.

关键词： Cor Diseases pogon

Retinal sub-layer thicknesses, presence of lacunes, and their interaction with cognitive performance in recent single subcortical infarction

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中华医学杂志(英文版) 2024年第16期137卷 2024 Jul 19页

作者： Cui Jingyu Kwapong William Robert Yan Yuying cao le Ye Chen Wang Hang Jiang Shuai Wu Bo Department of Neurology West China Hospital Sichuan University Chengdu Sichuan China

跨越鸿沟重返舞台:积极老龄化视角下“银发网红”平台参与模式研究

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苏州大学学报（哲学社会科学版） 2024年第4期45卷 162-171页

作者：曹书乐王心路清华大学新闻与传播学院北京100084

平台技术在重构公众日常生活的同时,也给老年群体的晚年生活带来了新的可能性和挑战。一方面,老年人积极使用数字媒体,借助平台实现一定程度的社会参与;另一方面,当数字技术拓宽老年群体的社会活动范围,他们也面临除接入、技能和素养之... 详细信息

平台技术在重构公众日常生活的同时,也给老年群体的晚年生活带来了新的可能性和挑战。一方面,老年人积极使用数字媒体,借助平台实现一定程度的社会参与;另一方面,当数字技术拓宽老年群体的社会活动范围,他们也面临除接入、技能和素养之外的参与性鸿沟。本文采用参与式观察和深度访谈法,聚焦深度参与平台内容生产活动的“银发网红”接入平台社会的模式,考察其在此过程中如何实现积极老龄化。研究发现,以老年人为中心的多层次、嵌入性、创造性平台参与结构正在形成,“银发网红”在多维平台参与的过程中获得了积极体验和暮年生活新意义。在“自我接入”模式中,他们将平台视为自我展示的空间、日常生活的延伸、拓展社会关系和满足自我需求的工具,在内容创作中获得技术自我效能感和重塑第二人生的机会。“家庭作坊”模式中,他们与家人合作参与平台社会,在获得代际反哺的同时形成代际互惠,也获得了更多情感联结与自我身份认同。“机构辅助”模式中,他们适应自我商品化,跻身银发经济,获得了个人价值的放大,实现了更大范围的社会融入。

关键词：平台参与积极老龄化老年网红数字融入参与性鸿沟

Omics-imaging signature-based nomogram to predict the progression-free survival of patients with hepatocellular carcinoma after transcatheter arterial chemoembolization

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World Journal of Clinical Cases 2024年第18期12卷 3340-3350页

作者： qing-Long Guan Hai-Xiao Zhang Jun-Peng Gu Geng-Fei cao Wei-Xin Ren Department of Interventional Radiology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830011Xinjiang Uygur Autonomous regionChina Department of Interventional Radiology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830011Xinjiang Uygur Autonomous RegionChina

BACKGROUND Enhanced magnetic resonance imaging(MRI)is widely used in the diagnosis,treatment and prognosis of hepatocellular carcinoma(HCC),but it can not effectively reflect the heterogeneity within the tumor and evaluate the effect after *** imaging analysis of voxel changes can effectively reflect the internal heterogeneity of the tumor and evaluate the progression-free survival(PFS).AIM To predict the PFS of patients with HCC before operation by building a model with enhanced MRI *** Delineate the regions of interest(ROI)in arterial phase,portal venous phase and delayed phase of enhanced *** extracting the combinatorial features of ROI,the features are fused to obtain deep learning radiomics(DLR)_***'s test was used to evaluate the diagnostic performance of different typological features.K-M analysis was applied to assess PFS in different risk groups,and the discriminative ability of the model was evaluated using the *** Tumor diameter and diolame were independent factors influencing the prognosis of ***'s test revealed multi-phase combined radiomic features had significantly greater area under the curve values than did those of the individual phases(Plearning(DTL)and DLR,significant differences were observed between the multi-phase and individual phases feature sets(Pled a median survival time of high risk group and low risk group was 12.8 and 14.2 months,respectively,and the predicted probabilities of 6 months,1 year and 2 years were 92%,60%,40%and 98%,90%,73%,*** C-index was 0.764,indicating relatively good consistency between the predicted and observed *** and DLR have higher predictive value for 2-year PFS in *** Based on the multi-temporal characteristics of enhanced MRI and the constructed Nomograph,it provides a new strategy for predicting the PFS of transarterial chemoembolization treatment of HCC.

关键词： Magnetic resonance imaging Radiomics Deep learning Progression-free survival Transcatheter arterial chemoembolization Hepatocellular carcinoma

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全肠道坏死性小肠结肠炎的诊治现状与困境

中国实用儿科杂志 2024年第5期39卷 338-341页

作者：曹旭清沈淳国家儿童医学中心复旦大学附属儿科医院外科新生儿外科上海201102

全肠道坏死性小肠结肠炎(necrotizing enterocolitis totalis,NEC-T)是坏死性小肠结肠炎(NEC)中最严重的类型,病情发展迅速,预后不良风险较高,且目前缺少普遍认可的诊疗策略。该文就NEC-T的危险因素、治疗决策及预后、治疗过程中可能面... 详细信息

全肠道坏死性小肠结肠炎(necrotizing enterocolitis totalis,NEC-T)是坏死性小肠结肠炎(NEC)中最严重的类型,病情发展迅速,预后不良风险较高,且目前缺少普遍认可的诊疗策略。该文就NEC-T的危险因素、治疗决策及预后、治疗过程中可能面临的伦理问题等进行概述,并阐述临床诊治过程中的难题与困境。

关键词：坏死性小肠结肠炎全肠道坏死性新生儿

Effect of slag composition on kinetic behavior of deep deoxidation of 5 wt.% Si high-silicon austenitic stainless steel

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Journal of Iron and Steel Research International 2024年第8期31卷 1873-1885页

作者： Guan-xiong Dou Han-jie Guo Jing Guo Xue-cheng Peng qing-yun Chen School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing 100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083China

Based on a thermodynamic study of 5 wt.%Si high-silicon austenitic stainless steel(SS-5Si)smelting using CaF_(2)-cao-Al_(2)0_(3)-Mg-Si0_(2) slag to obtain a low oxygen content of less than 10×10^(-4) wt.%,a kinetic mass transfer model for deep deoxidation was established through laboratory studies,and the effects of slag components and temperature on deoxidation during the slag-steel reaction process of sS-5Si were systematically *** experimental data verified the accuracy of the model *** results showed that the final oxygen content in the steel at 1873 K was mainly controlled by the oxygen content derived from the activity of SiO_(2) regulated by the[Si]-[O]equilibrium reaction in the slag system;in particular,when the slag basicity R(R=w(cao)/w(SiO2),where w(cao)and w(SiO_(2))are the contents of cao and SiO_(2) in the slag,respectively)is 3,the Al2O3 content in the slag needs to be less than 2.7%.The mass transfer rate equation for the kinetics of the deoxidation reaction revealed that the mass transfer of oxygen in the liquid metal is the rate-controlling step under different slag conditions at 1873 K,and the oxygen transfer coefficient ko.m increases with increasing the slag basicity from 4.0×10^(-6)m s^(-1)(R=1)to 4.3×10^(-5) m s^(-1)(R=3).ko.m values at R=2 and R=3 are almost the same,indicating that high slag basicity has little *** integral of the mass transfer rate equation for the deoxidation reaction of SS-5Si under different slag conditions is *** total oxygen content of the molten steel decreases with increasing basicity from an initial content of 22×10^(-4) to 3.2×10^(-4) wt.%(R=3),consistent with the change in ko.m with slag *** R=2,the slag-steel reaction takes 15 min to reach equilibrium(w[O]=5.5×10^(-4) wt.%),whereas at R=3,the slag-steel reaction takes 30 min to reach equilibrium(w[0]=3.2×10^(-4) wt.%).Considering the depth of deoxidation and reaction time of SS-5Si smelting,it is recommended the slag b

关键词： Slag-steel reaction Kinetics Rate-controlling step Deep deoxidation Transfer coefficient