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Why over-parameterization of deep neural networks does not overfit?

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Science China(Information Sciences) 2021年第1期64卷 242-244页

作者： Zhi-hua zhou National Key Laboratory for Novel Software Technology Nanjing University

Deep neural networks often come with a huge number of parameters,even larger than the number of training examples,but it seems that these over-parameterized models have not suffered from *** is quite strange and why over-parameterization does not overfit?poses a fundamental question concerning the mysteries behind the success of deep neural networks.

关键词： Information Systems and Communication Service

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高职学院“传统康复治疗技术”教学实践研究

教育教学论坛 2025年第06期 161-164页

作者：周江霞湖南环境生物职业技术学院医学院

当前，高职学院“传统康复治疗技术”课程面临着理论与实践融合不足、教学方法单一等问题。旨在探索并实践一种更加高效的教学方法，强调理论知识与实践技能相结合，通过教师示范与学生模仿练习的方式，提升学生的专业技能。提出了针对... 详细信息

当前，高职学院“传统康复治疗技术”课程面临着理论与实践融合不足、教学方法单一等问题。旨在探索并实践一种更加高效的教学方法，强调理论知识与实践技能相结合，通过教师示范与学生模仿练习的方式，提升学生的专业技能。提出了针对课程教学内容、实践环节和操作评价的优化对策，并对改革后的教学效果进行了初步评估。研究表明，通过优化的教学方法，能够显著提高学生的实践技能和对理论知识的掌握程度，为高职医疗教育的改进提供了有效路径。

关键词：传统康复治疗实践教学教学优化高职教育

30000 m^(3)FSRU-LNGC多工况大容量轴带发电机应用

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船海工程 2025年第1期54卷 94-98,104页

作者：蒋雄健周清华周鑫元许敏江南造船(集团)有限责任公司上海201913

30,000 m^(3) FSRU-LNGC兼具LNG运输船和FSRU两种船型特点,运行工况复杂,海上航行作为运输船时需配置一套推进系统,停泊作为FSRU时电站容量需求大,针对其运行特点和系统组成,提出适用于多工况的大容量轴带发电机方案,分析两种船型运行... 详细信息

30,000 m^(3) FSRU-LNGC兼具LNG运输船和FSRU两种船型特点,运行工况复杂,海上航行作为运输船时需配置一套推进系统,停泊作为FSRU时电站容量需求大,针对其运行特点和系统组成,提出适用于多工况的大容量轴带发电机方案,分析两种船型运行工况下的功率需求,可给出大容量轴发详细配置情况,以利用LNG运输船工况下的主机功率,优化FSRU工况下的发电机配置,以期在多种工况尤其是进出港或FSRU工况下减少发电机的使用。

关键词： FSRU LNG运输船大容量轴带发电机多工况中速机

Performance Analysis of ACO on the Quadratic Assignment Problem

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Chinese Journal of Electronics 2018年第1期27卷 26-34页

作者： xia xiaoyun zhou Yuren College of Mathematics Physics and Information Engineering Jiaxing University School of Data and Computer Science Sun Yat-sen University

The Quadratic assignment problem(QAP)is to assign a set of facilities to a set of locations with given distances between the locations and given flows between the facilities such that the sum of the products between flows and distances is minimized, which is a notoriously difficult NP-hard combinatorial optimization problem. A lot of heuristics have been proposed for the QAP problem, and some of them have proved to be efficient approximation algorithms for this problem. Ant colony optimization(ACO) is a general-purpose heuristic and usually considered as an approximation algorithms for NP-hard optimization problems. However, we know little about the performance of ACO for QAP from a theoretical perspective. This paper contributes to a theoretical understanding of ACO on the QAP problem. The worst-case bound on a simple ACO algorithm called(1+1) Max-min ant algorithm((1+1) MMAA) for the QAP problem is *** is shown that a degenerate(1+1) MMAA finds an approximate solution on the QAP problem. Finally, we reveal that ACO can outperform the 2-exchange local search algorithm on an instance of the QAP problem.

关键词： Ant colony optimization(ACO) Quadratic assignment problem(QAP) Approximation algorithms Local search Algorithms analysis Runtime analysis

Wet synthesis endows scalable epitaxy of complex oxide multiferroics

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National Science Review 2020年第7期7卷 1147-1148页

作者： hua zhou X-ray Science Division Advanced Photon SourceArgonne National Laboratory

Synthesis is the bridge linking scientific fantasies to practical realizations, to push the boundaries of materials exploration with societally impactful applications. As one of the most promising classes of materials with direct technological implications, complex oxides exhibit an amazing collection of electronic, chemical,ionic and topological properties, making them strategic candidates for a variety of electronic, energy and environ-

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Feature analysis on US military aircraft engine advanced technology programs

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航空动力学报 2014年第7期29卷 1701-1709页

作者： LIANG Chun-hua SUN Ming-xia LIU Hong-xia Shenyang Engine Design and Research Institute Aviation Industry Corporation of China

US military aircraft engine advanced technology programs were overviewed and analyzed from light weight gas generator(LWGG)program initiated in 1960 sthrough integrated high performance turbine engine technology(IHPTET)program started in 1980 s,then to versatile affordable advanced turbine engine(VAATE)*** features and trends were summarized and concluded by literature statistics method,such as teams based on closely corporation among government,industries and academics,goals oriented with national defence strategies and weapon system development requirements,engineering manufacture and development including all relative disciplines and areas,verification measured by technology readiness level,the application extending to military aircraft engine,civilian engine,gas turbine and space vehicle,*** experience and lessons obtained can provide reference and guide for technology research and engineering manufacture and development of military aircraft engines in the world.

关键词： aircraft engine military aircraft engine advanced technology program technology corporation multi-discipline development technology verification

基本心理需求的中介作用和感恩的调节作用在压力性生活事件中对大学生网络成瘾的影响

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中国健康教育 2025年第1期41卷 29-33页

作者：史华伟邓嵘王凤霞江南大学社科处江苏无锡214122 无锡学院党委宣传部江苏无锡214122

目的以江苏省无锡市大学生为研究对象,分析压力性生活事件、感恩、基本心理需求满足影响大学生网络成瘾的路径机制。方法采用网络成瘾问卷、压力性生活事件量表、感恩问卷以及基本心理需要量表,抽取江苏省无锡市1440名大学生进行问卷调... 详细信息

目的以江苏省无锡市大学生为研究对象,分析压力性生活事件、感恩、基本心理需求满足影响大学生网络成瘾的路径机制。方法采用网络成瘾问卷、压力性生活事件量表、感恩问卷以及基本心理需要量表,抽取江苏省无锡市1440名大学生进行问卷调查。结果大学生压力性生活事件、网络成瘾、基本心理需要、感恩得分依次为(64.68±15.63)分、(46.52±14.48)分、(91.79±11.24)分、(65.46±9.53)分;压力性生活事件可以显著正向预测网络成瘾(r=0.16,P<0.01),也可以显著负向预测感恩、基本心理需要(r=-0.09,-0.24;P<0.05);网络成瘾和感恩以及基本心理需要显著负相关(r=-0.32,-0.34;P<0.001),感恩和基本心理需要显著正相关(r=0.22,P<0.001);压力性生活事件既能够直接影响大学生网络成瘾(β=0.13,t=2.78;P<0.05),也可以通过基本心理需要和感恩间接影响网络成瘾(β=-0.24、-0.23,t=-5.62、-5.42;P<0.001)。结论压力性生活事件可以通过有调节的中介效应影响大学生网络成瘾。心怀感恩的大学生可以更好地应对压力性生活事件进而保持乐观的心理状态。

关键词：网络成瘾压力性生活事件基本心理需要感恩大学生

全自动QuEChERS-UPLC-MS/MS法测定麦冬中19种植物生长调节剂和杀菌剂

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分析测试学报 2025年第2期44卷 318-325页

作者：岳超毛思浩周霞阮昊刘柱王峰浙江省食品药品检验研究院国家药品监督管理局中成药质量评价重点实验室国家市场监管重点实验室(功能食品质量与安全领域)浙江省市场局重点实验室(保健食品质量安全重点实验室浙江杭州310052

建立全自动QuEChERS-UPLC-MS/MS法快速测定浙麦冬中19种植物生长调节剂和杀菌剂残留量的分析方法。研究使用挥发性盐提取溶液体系联合全自动QuEChERS仪器制备样品溶液,以ACQUITY UPLC BEH C_(18)色谱柱(1.7μm,3.0 mm×100 mm)进行分离,... 详细信息

建立全自动QuEChERS-UPLC-MS/MS法快速测定浙麦冬中19种植物生长调节剂和杀菌剂残留量的分析方法。研究使用挥发性盐提取溶液体系联合全自动QuEChERS仪器制备样品溶液,以ACQUITY UPLC BEH C_(18)色谱柱(1.7μm,3.0 mm×100 mm)进行分离,0.05%甲酸-2 mmol/L甲酸铵-乙腈为流动相进行梯度洗脱,采用正、负离子模式电离,保留时间依赖多反应监测(MRM)模式检测,以保留时间和离子丰度比定性,基质匹配外标法定量。结果表明,19种农药在5~200 ng/mL范围内线性关系良好,相关系数(r^(2))均大于0.999。方法检出限为0.048~1.68μg/kg,方法定量下限为0.16~5.61μg/kg。19种农药在空白基质中3个加标水平浓度的回收率为62.8%~117%,相对标准偏差(RSDs,n=6)为1.9%~9.1%。使用该方法对30批麦冬进行检测,样品中3-吲哚乙酸、氟醚唑、烯效唑、胺鲜酯有不同程度的检出。该研究方法高效、便捷、准确,适用于麦冬中19种植物生长调节剂和杀菌剂的测定,可满足大批量检测的需求。

关键词：麦冬植物生长调节剂杀菌剂全自动QuEChERS样品制备系统超高效液相色谱-串联质谱仪(UPLC-MS/MS) 批量检测

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A Presumed Synonymous Mutation of PKD2 Caused Autosomal Dominant Polycystic Kidney Disease in a Chinese Family

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Current Medical Science 2021年第5期41卷 1029-1036页

作者： Lin-xia DENG Yuan YANG Jing YANG Luo-wen zhou Kang WANG Jian-hua zhou Department of Pediatrics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Neurosurgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Forensic Medicine Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Objective:Autosomal dominant polycystic kidney disease(ADPKD)is mainly caused by the pathogenic mutation of PKD1 or PKD2 gene and usually affects bilateral *** mutations are generally assumed to be neutral as they do not alter amino ***,we described an extremely rare ADPKD child caused by a heterozygous synonymous mutation of PKD2 gene accompanied by massive proteinuria and congenital solitary ***:Clinical characteristics of the patients were ***-exome sequencing was performed to screen the disease-causing gene mutation,and reverse transcription polymerase chain reaction(RT-PCR)and Sanger sequencing were applied to analyze the impact of the identified mutation on gene transcription and ***:Polycystic changes were found in the solitary kidney of a girl initially presented with nephrotic-range *** her mother and 2 other family members were diagnosed to be ***-exome sequencing of the proband identified a heterozygous synonymous mutation(c.1716G>A,***572=)located in the splicing site of exon 7 in PKD2 gene,which was co-segregated with the PKD phenotype in the ***-PCR and direct sequencing of amplified products revealed that this heterozygous synonymous mutation led to exon7 skipping in PKD2 ***:We reported an extremely rare child case of ADPKD2 in combination with solitary kidney and nephrotic-range proteinuria,and firstly confirmed the pathogenicity of a heterozygous synonymous mutation(c.1716G>A)in PKD2 *** results indicate that synonymous mutations should not be excluded from disease-causing if they are located in splicing site of an exon.

关键词： autosomal dominant polycystic kidney disease child PKD2 gene splicing synonymous mutation