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The Adjustment Analysis Method of the Active Surface Antenna Based on Convolutional Neural Network

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Research in Astronomy and Astrophysics 2024年第6期24卷 294-306页

作者： You Ban Shang shi na Wang Qian Xu Shufei Feng School of Mechanical Engineering Xinjiang UniversityUrumqi 830017China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Active surface technique is one of the key technologies to ensure the reflector accuracy of the millimeter/submillimeter wave large reflector *** antenna is complex,large-scale,and high-precision equipment,and its active surfaces are affected by various factors that are difficult to comprehensively deal *** this paper,based on the advantage of the deep learning method that can be improved through data learning,we propose the active adjustment value analysis method of large reflector antenna based on deep *** method constructs a neural network model for antenna active adjustment analysis in view of the fact that a large reflector antenna consists of multiple panels spliced *** on the constraint that a single actuator has to support multiple panels(usually 4),an autonomously learned neural network emphasis layer module is designed to enhance the adaptability of the active adjustment neural network *** classical 8-meter antenna is used as a case study,the actuators have a mean adjustment error of 0.00252 mm,and the corresponding antenna surface error is0.00523 *** active adjustment result shows the effectiveness of the method in this paper.

关键词： techniques:radar astronomy telescopes methods:analytical methods:numerical

Multimodal Fusion of Brain Imaging Data: Methods and Applications

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Machine Intelligence Research 2024年第1期21卷 136-152页

作者： na Luo Weiyang shi Zhengyi Yang Ming Song Tianzi Jiang Brainnetome Center and national Laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Center for Excellence in Brain Science and Intelligence Technology Institute of AutomationChinese Academy of SciencesBeijing 100190China Research Center for Augmented Intelligence Zhejiang LaboratoryHangzhou 311100China

Neuroimaging data typically include multiple modalities,such as structural or functional magnetic resonance imaging,dif-fusion tensor imaging,and positron emission tomography,which provide multiple views for observing and analyzing the *** lever-age the complementary representations of different modalities,multimodal fusion is consequently needed to dig out both inter-modality and intra-modality *** the exploited rich information,it is becoming popular to combine multiple modality data to ex-plore the structural and functional characteristics of the brain in both health and disease *** this paper,we first review a wide spectrum of advanced machine learning methodologies for fusing multimodal brain imaging data,broadly categorized into unsupervised and supervised learning *** by this,some representative applications are discussed,including how they help to under-stand the brain arealization,how they improve the prediction of behavioral phenotypes and brain aging,and how they accelerate the biomarker exploration of brain ***,we discuss some exciting emerging trends and important future ***,we intend to offer a comprehensive overview of brain imaging fusion methods and their successful applications,along with the chal-lenges imposed by multi-scale and big data,which arises an urgent demand on developing new models and platforms.

关键词： Multimodal fusion supervised learning unsupervised learning brain atlas cognition brain disorders

回火温度对厚截面含钒中碳珠光体钢强韧性的影响

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金属世界 2024年第4期 69-73页

作者：史娜姚三成余亚东高伟邹强于文坛马鞍山钢铁股份有限公司技术中心安徽马鞍山243002

采用光学显微镜(OM)、扫描电镜(SEM)、硬度及断裂韧性实验等研究了回火温度对含钒中碳珠光体钢的显微组织及强韧性的影响。结果表明,距离喷水端不同距离处,实验钢的冷却速度差异较大,距离喷水端5 mm处冷速4~5℃/s,距离喷水端50 mm以上... 详细信息

采用光学显微镜(OM)、扫描电镜(SEM)、硬度及断裂韧性实验等研究了回火温度对含钒中碳珠光体钢的显微组织及强韧性的影响。结果表明,距离喷水端不同距离处,实验钢的冷却速度差异较大,距离喷水端5 mm处冷速4~5℃/s,距离喷水端50 mm以上冷速约1℃/s。冷却未回火状态下,实验钢近喷水端的上表面组织中未发现第二相粒子,而离喷水端较远的下表面有少量V(C,N)粒子析出,且珠光体片层间距较大。420~520℃回火,实验钢的硬度随回火温度的提高而逐渐降低,断裂韧性呈现先增加后降低的趋势,在460℃回火时获得最大值83.5 MPa·m^(1/2)。当回火温度超过480℃后,组织中V(C,N)粒子逐渐粗化,硬度和韧性随之下降。

关键词：回火温度珠光体钢第二相粒子珠光体片层间距冷却速度断裂韧性强韧性厚截面

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正火工艺对EA1N车轴组织与性能的影响

金属加工（热加工） 2024年第6期 35-40页

作者：余亚东于文坛史娜姚三成刘学华邹强马鞍山钢铁股份有限公司技术中心安徽马鞍山243000

采用光学显微镜、力学性能测试,研究不同加热温度及保温时间对EA1N车轴钢正火态显微组织与力学性能的影响,且采用黑匣子(耐热温度记录仪)测试生产过程车轴温度变化,开展工艺优化后生产试验验证。结果表明:锻态EA1N车轴经正火后,显微组... 详细信息

采用光学显微镜、力学性能测试,研究不同加热温度及保温时间对EA1N车轴钢正火态显微组织与力学性能的影响,且采用黑匣子(耐热温度记录仪)测试生产过程车轴温度变化,开展工艺优化后生产试验验证。结果表明:锻态EA1N车轴经正火后,显微组织细化,铁素体含量降低,而强度略微下降,塑性明显提高;正火在保温时间为60min,温度在830~890℃之间时,对EA1N车轴组织及性能的影响不大,晶粒度为8~9级,屈服强度和抗拉强度极差均<5MPa;选择在860℃正火,保温时间在0~120min之间时,对车轴的组织及性能的影响较小,均由细珠光体和铁素体组成,强度极差<8MPa;EA1N车轴热处理生产试验缩短正火保温时间甚至零保温后,各项性能指标均满足EN 13261:2020技术要求。

关键词： EA1N车轴正火组织力学性能

基于“四个结合”的中医药学应用型人才培养模式的探索与实践

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沈阳医学院学报 2024年第4期26卷 436-439页

作者：张艳卢思佟王杰孙大宇贾辉陆瑶时娜沈阳医学院国际教育学院辽宁沈阳110034 沈阳医学院中医药学院

目的:探讨基于“四个结合”的中医药学应用型人才培养模式在某医学院中医药学专业学生中的实践效果。方法:选取某医学院校2021级、2022级中医药学专业学生为研究对象,将研究对象分为2组,参加过各类课外竞赛和创新创业项目的学生为试验组... 详细信息

目的:探讨基于“四个结合”的中医药学应用型人才培养模式在某医学院中医药学专业学生中的实践效果。方法:选取某医学院校2021级、2022级中医药学专业学生为研究对象,将研究对象分为2组,参加过各类课外竞赛和创新创业项目的学生为试验组,未参加过任何课外竞赛和创新创业项目的学生为对照组,比较2组学生期末智育成绩(不包括马克思主义基本原理成绩);对上述本科生进行人才培养模式满意度问卷调查,对调查结果进行效度与满意度分析。结果:试验组学生的智育成绩高于对照组(P<0.05)。抽因子分析结果表明,样本适宜性较好、问卷效度良好(KMO=0.874)。学生对基于“四个结合”的中医药学专业人才培养模式的总体满意度得分为(4.16±0.2)分(满分5分),体现了学生对该模式较高的认可度。结论:构建“四个结合”的特色中医药学应用型人才培养模式,有利于提升复合应用型高素质中医药学专业人才的培养质量,为辽沈地区输送具有扎实理论基础和实践创新能力的高质量应用型人才。

关键词：人才培养模式能力培养中医药学医学教育

河北省麻醉专业住院医师规范化培训基地质量建设现状调查与研究

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麻醉安全与质控 2024年第4期6卷 201-205页

作者：李昭赵爽刘欣李惠洲石娜张鹏辉王秀丽河北医科大学第三医院麻醉科河北石家庄050051

目的探讨河北省麻醉住培基地存在的问题,查找原因制定相应政策,为提升河北省麻醉专业住培质量提供指导依据。方法以河北省18家国家级麻醉专业住院医师规范化培训基地为研究对象,依据2021年国家麻醉专业住院医师规范化培训评估标准,采用... 详细信息

目的探讨河北省麻醉住培基地存在的问题,查找原因制定相应政策,为提升河北省麻醉专业住培质量提供指导依据。方法以河北省18家国家级麻醉专业住院医师规范化培训基地为研究对象,依据2021年国家麻醉专业住院医师规范化培训评估标准,采用统一编制,各基地采用专人填写问卷调查资料,包括各基地基本条件、师资管理、培训过程管理、培训质量管理、保障措施等,填写后由后台自行回收问卷。结果河北省18家国家级麻醉专业住院医师规范化培训基地年麻醉总量达标率为78%,基地亚专业麻醉例数未达标的比例为44%。住培基地麻醉科及疼痛门诊设备配备仪器达标率为89%。结论各麻醉专业基地应行动起来,进一步提升基地水准,加强住培建设内涵,制定确实可行的帮扶措施。

关键词：住院医师规范化培训基地麻醉专业质量建设调研河北省

Preparation of lactic acid bacteria compound starter cultures based on pasting properties and its improvement of glutinous rice flour and dough

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Food Science and Human Wellness 2024年第4期13卷 2090-2101页

作者： Dengyu Wang Linlin Liu Bing Wang Wenjian Xie Yanguo shi na Zhang Hongchen Fan Key Laboratory of Food Science and Engineering of Heilongjiang Ordinary Higher Colleges Key Laboratory of Grain Food and Comprehensive Processing of Heilongjiang ProvinceCollege of Food EngineeringHarbin University of CommerceHarbin 150076China

The effects of 5 lactic acid bacteria(LAB)fermentation on the pasting properties of glutinous rice flour were compared,and suitable fermentation strains were selected based on the changes of viscosity,setback value,and breakdown value to prepare LAB compound starter *** results revealed that Latilactobacillus sakei HSD004 and Lacticaseibacillus rhamnosus HSD005 had apparent advantages in increasing the viscosity and reducing the setback and breakdown values of glutinous rice *** particular,the compound starter created using the two abovementioned LAB in the ratio of 3:1 had better performance than that using a single LAB in improving the pasting properties and increasing the water and oil absorption capacity of glutinous rice ***,the gelatinization enthalpy of the fermented samples increased *** frozen glutinous rice dough stored for 28 days,the viscoelasticity of frozen dough prepared by compound starter was better than that of control dough,and the freezable water content was lower than that of control *** results indicate that compound LAB fermentation is a promising technology in the glutinous rice-based food processing industry,which has significance for its application.

关键词： Glutinous rice flour Glutinous rice dough Lactic acid bacteria compound starter cultures Pasting properties Viscoelasticity

Hereditary severe insulin resistance syndrome:Pathogenesis,pathophysiology,and clinical management

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Genes & Diseases 2023年第5期10卷 1846-1856页

作者： Junaid Iqbal Hong-Li Jiang Hui-Xuan Wu Long Li Ying-Hui Zhou nan Hu Fen Xiao Ting Wang shi-na Xu Hou-De Zhou national Clinical Research Center for Metabolic Diseases Hunan Provincial Key Laboratory for Metabolic Bone Diseasesand Department of Endocrinology and MetabolismThe Second XiangYa Hospital of Central South UniversityChangshaHunan 410011China

Severe insulin resistance has been linked to some of the most globally prevalent disorders,such as diabetes mellitus,nonalcoholic fatty liver disease,polycystic ovarian syndrome,and *** severe insulin resistance syndrome(H-SIRS)is a rare disorder classified into four principal categories:primary insulin receptor defects,lipodystrophies,complex syndromes,and obesity-related *** such as INSR,AKT2,TBC1D4,AGPAT2,BSCL2,CAV1,PTRF,LMna,PPARG,PLIN1,CIDEC,LIPE,PCYT1A,MC4R,LEP,POMC,SH2B1,RECQL2,RECQL3,ALMS1,PCNT,ZMPSTE24,PIK3R1,and POLD1 have been linked to *** clinical features include insulin resistance,hyperglycemia,hyperandrogenism,severe dyslipidemia,fatty liver,abnormal topography of adipose tissue,and low serum leptin and adiponectin *** of H-SIRS is based on the presence of typical clinical features associated with the various H-SIRS forms and the identification of mutations in H-SIRS-linked genes by genetic *** therapy,insulin sensitization,exogenous insulin therapy,and leptin replacement therapy have widely been adopted to manage *** rarity of H-SIRS,its highly variable clinical presentation,refusal to be tested for genetic mutations by patients’family members who are not severely sick,unavailability of genetic testing,and testing expenses contribute to the delayed or underdiagnoses of *** diagnosis facilitates early management of the condition,which results in improved glycemic control and delayed onset of diabetes and other complications related to severe insulin *** use of updated genetic sequencing technologies is recommended,and long-term studies are required for genotype–phenotype differentiation and formulation of diagnostic and treatment protocols.

关键词： Diabetes Genetics Insulin resistance Lipodystrophy Pathophysiology Therapy

Ferroelectric perovskite PbTiO3for advanced photocatalysis

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Rare Metals 2024年第9期43卷 4038-4055页

作者： Shuang Zhao shi-shi Shen Lu Ha Bo-Chao Tian na Li Wei Chen Xi-Bao Li School of Materials and Metallurgy University of Science andTechnology Liaoning School of Materials Science and Engineering Nanchang Hangkong University Department of Chemistry National University of Singapore

The ferroelectric semiconductor material PbTiO3exhibits remarkable spontaneous polarization and photoelectric properties, positioning it as a promising polar photocatalyst. The internal electric field of ferroelectrics can separate photocarriers and enhance the catalytic performance of photocatalysts. Moreover, when combined with other semiconductors, PbTiO3contributes to the construction of a depolarization field, extending the catalytic applications of PbTiO3catalysts. PbTiO3exhibits optical absorption, semiconductor, and piezoelectric properties. Its piezoelectric polarization field enhances charge separation, modulates band structure, surface charge conduction, and heterojunction interface charge conduction,thereby amplifying photocatalytic activity. This paper begins by examining the structure, properties, and preparation methods of PbTiO3. Subsequently, it delves into the optimization of PbTiO3's structure and performance,exploring applications in photocatalysis as a ferroelectric photocatalyst. Emphasis is placed on the detailed discussion of surface modification, heterostructure formation, and ferroelectric polarization of PbTiO3ferroelectrics. These aspects are thoroughly explored for their role in regulating activity and optimizing the performance of photocatalysis and photopiezoelectric catalysis. In conclusion, the paper addresses the current research status of PbTiO3ferroelectric materials and highlights the challenges that lie *** intention is to provide valuable references for the ongoing research in PbTiO3ferroelectric materials.

关键词： Polarization