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韦尔默自主艺术思想研究

西北大学学报（哲学社会科学版） 2024年第3期54卷 185-192页

作者：李进书河北大学文学院河北保定071002

结合现代主义、后现代主义以及美学论著的一些共同审美特征,韦尔默指出自主艺术是富有启蒙功效的艺术作品,它们力图达成理性的自我超越。自主艺术蕴含着创作者本真的审美经验,这些经验有助于拓展鉴赏者的感知力,有益于他们成长为具有交... 详细信息

结合现代主义、后现代主义以及美学论著的一些共同审美特征,韦尔默指出自主艺术是富有启蒙功效的艺术作品,它们力图达成理性的自我超越。自主艺术蕴含着创作者本真的审美经验,这些经验有助于拓展鉴赏者的感知力,有益于他们成长为具有交往意识和团结精神的自主个体。自主艺术维护和促进着艺术的自主性,这使得艺术在与科学和法律等话语共同建构良善生活的基础上,始终能以审美自主方式为人类的共同生活提供伦理资源和进步的动力。在韦尔默看来,自主艺术具有一种创新和启蒙的动力,这种动力为多元正义良善生活的确立创造着契机和可能。

关键词：韦尔默自主艺术启蒙本真性良善生活

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海上浮式风机多体系统耦合动力模型研究

振动工程学报 2024年第1期37卷 20-30页

作者：李书进郑达成孔凡武汉理工大学土木工程与建筑学院湖北武汉430070 合肥工业大学土木与水利工程学院安徽合肥230009

海上浮式风机是近年来随着海上风电的快速发展,为了捕获深海更丰富、更持久的风能而提出的一种风力发电装置,已成为当今风能开发的主要方向。作为一种多体系统,由于海上浮式风机结构特殊,加上环境复杂,对其进行准确的计算和分析尤为重... 详细信息

海上浮式风机是近年来随着海上风电的快速发展,为了捕获深海更丰富、更持久的风能而提出的一种风力发电装置,已成为当今风能开发的主要方向。作为一种多体系统,由于海上浮式风机结构特殊,加上环境复杂,对其进行准确的计算和分析尤为重要。本文对海上浮式风机的耦合动力模型进行了研究,建立了复杂工况下Spar型海上浮式风机改进的14-DOF耦合动力模型,包括气动力模块、水动力模块和结构分析模块等,用于扩展其适用范围和准确计算风机的动力响应,并通过数值仿真对所建模型进行了分析和验证。主要的改进有:不对平台和塔架的转动角度作小量近似,扩展其适用范围;考虑角速度和欧拉角速度的换算关系,不作等化处理。此外,所建模型考虑风机叶片扭转角对叶片变形的影响,得到了较为准确的叶片面内外响应。同时采用线性势流理论对水动力进行计算,较之Morison方程适用性更广。仿真分析表明,本文所建模型可以更准确地计算海上浮式风机系统的动力响应,且具有更广的适用范围。

关键词：海上浮式风机多体系统气动力分析水动力分析耦合模型

Effect of Iodine Supplementation on Iodine Nutrition and Thyroid Function in Pregnant Women:A Cross-Sectional Study

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Biomedical and Environmental Sciences 2022年第7期35卷 641-647页

作者： SUN Rong QIAN Ting Ting liU Lan Chun ZHAO Meng CHE Wen jing ZHANG ling li Wei Dong JIA Qing Zhen WANG Jian Hui li jin shu CHEN Zhi Hui ZHANG Bi Yun liU Peng Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Key lab of Etiology and Epidemiology Education Bureau of Heilongjiang Province&Ministry of HealthMicroelement and human health lab of Heilongjiang ProvinceCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Center for Disease Control and Prevention in Xinjiang Uygur Autonomous Region Urumqi 830002XinjiangChina Center for Disease Control and Prevention in Anhui Province Hefei 238007AnhuiChina Institute for Endemic Disease Control and Prevention in Shanxi Province Linfen 041000ShanxiChina Center for Disease Control and Prevention in liaoning Province Shenyang 110005LiaoningChina Center for Disease Control and Prevention in Sichuan Province Chengdu 610041SichuanChina Center for Disease Control and Prevention in Fujian Province Fuzhou 350001FujianChina Center for Disease Control and Prevention in Hubei Province Wuhan 430079HubeiChina

This study aimed to describe the situation of iodine supplementation in pregnant women,and to explore the effects of such supplementation measures on iodine nutrition and thyroid function.Pregnant women in seven provinces were selected by multi-stage sampling.Basic information was collected and a food frequency questionnaire was administered.Salt iodine,urinary iodine,and thyroid function were determined.Subjects were divided into five groups based on iodine supplementation.For pregnant women,the median urinary iodine concentration(MUIC)in seven provinces was 164.3μg/L,and thyroid nodules(15.75%)were a common thyroid disease.Gestation,iodine supplementation,etc.impacted iodine nutrition and thyroid function.Compared with other groups,simultaneous iodine supplementation with iodized salt,iodine-rich foods,and iodine preparations(the ISFP group)was the most effective approach for improving iodine nutrition;supplementation via iodine-rich foods only showed the lowest prevalence of TPOAb-positive(5.48%)and TgAb-positive(1.37%)diseases.In addition,pregnant women with MUIC in the 150–249μg/L range showed higher rates of TPOAb-positive(13.78%)disease and sub-hypothyroidism(5.38%)compared to those with MUIC in the 100–149μg/L range;however,goiter showed the opposite trend.Our results indicate that iodine supplementation needs vary from person to person.

关键词： function. iodine opposite

Relationship between Dining Place, Iodine Source, and Iodine Nutrition in School-Age Children: A Cross-Sectional Study in China

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Biomedical and Environmental Sciences 2023年第1期36卷 10-23页

作者： QIAN Ting Ting SUN Rong liU Lan Chun CHE Wen jing ZHAO Meng ZHANG ling li Wei Dong JIA Qing Zhen WANG Jian Hui li jin shu CHEN Zhi Hui ZHANG Bi Yun liU Peng Endemic Disease Control Center Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Key lab of Etiology and Epidemiology Education Bureau of Heilongjiang Province&Ministry of HealthMicroelement and human health lab of Heilongjiang ProvinceCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081HeilongjiangChina Center for Disease Control and Prevention in Xinjiang Uygur Autonomous Region Urumqi 830002XinjiangChina Center for Disease Control and Prevention in Anhui Province Hefei 230601AnhuiChina Institute of Endemic Disease Prevention and Control in Shanxi province Linfen 041000ShanxiChina Center for Disease Control and Prevention in liaoning Province Shenyang 110000LiaoningChina Center for Disease Control and Prevention in Sichuan Province Chengdu 610041SichuanChina Center for disease control and prevention in Fujian province Fuzhou 350012FujianChina Center for Disease Control and Prevention in Hubei Province Wuhan 430079HubeiChina

Objective This study assesses the impact of iodine-rich processed foods and dining places on the iodine nutritional status of children.Methods School-aged children(SAC) in seven provinces in China were selected by school-based multistage sampling. Urinary iodine, salt iodine, and thyroid volume(TVOL) were determined. Questionnaires were used to investigate dining places and iodine-rich processed foods. The water iodine was from the2017 national survey. Multi-factor regression analysis was used to find correlations between variables.Results Children ate 78.7% of their meals at home, 15.1% at school canteens, and 6.1% at other places.The percentage of daily iodine intake from water, iodized salt, iodine-rich processed foods, and cooked food were 1.0%, 79.2%, 1.5%, and 18.4%, respectively. The salt iodine was correlated with the urinary iodine and TVOL, respectively(r = 0.999 and-0.997, P < 0.05). The iodine intake in processed foods was weakly correlated with the TVOL(r = 0.080, P < 0.01). Non-iodized salt used in processed foods or diets when eating out had less effect on children’s iodine nutrition status.Conclusion Iodized salt remains the primary source of daily iodine intake of SAC, and processed food has less effect on iodine nutrition. Therefore, for children, iodized salt should be a compulsory supplement in their routine diet.

关键词： Dining place Source of iodine Iodine-rich processed foods Urinary iodine

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高职汽车服务类专业学生创业困境与突破对策

内燃机与配件 2024年第5期 148-150页

作者：李树金丁强甘肃林业职业技术学院甘肃天水741020

创业教育是新时代职业教育的重要议题,对高职学生进行创业教育并推动学生自主创业,可以有力推进大学生就业工作。高职汽车服务类专业培养面向汽车后市场的技术技能人才,学生在汽车后市场创业具有一定优势。当前,高职汽车类专业学生创业... 详细信息

创业教育是新时代职业教育的重要议题,对高职学生进行创业教育并推动学生自主创业,可以有力推进大学生就业工作。高职汽车服务类专业培养面向汽车后市场的技术技能人才,学生在汽车后市场创业具有一定优势。当前,高职汽车类专业学生创业面临着意识和能力等方面的困境,需要高职学院通过提高对创业教育重要性认识等对策,加强对学生的创业教育。

关键词：高职汽车创业教育

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数字型太赫兹带通滤波器的逆向设计及优化

物理学报 2024年第6期73卷 151-158页

作者：居学尉张林烽黄峰朱国锋李淑锦陈燕青王嘉勋钟舜聪陈盈王向峰福州大学机械工程及自动化学院福建省太赫兹功能器件与智能传感重点实验室福州350108 CAD/CAM福建省高校工程研究中心(莆田学院) 莆田351100 智能配电网装备福建省高校工程研究中心福州350108 福州大学物理与信息工程学院福州350108

针对高性能太赫兹功能器件的规范化设计需求,本文将智能逆向设计方法应用于太赫兹带通滤波器的设计与优化中.建立与数字空间映射的亚波长超表面等效模型,从设定器件的目标功能和约束条件出发,利用智能算法探索整个解空间中的全部可能结... 详细信息

针对高性能太赫兹功能器件的规范化设计需求,本文将智能逆向设计方法应用于太赫兹带通滤波器的设计与优化中.建立与数字空间映射的亚波长超表面等效模型,从设定器件的目标功能和约束条件出发,利用智能算法探索整个解空间中的全部可能结构,迭代寻优至最优结构图案.本文利用搭建的逆向设计框架设计了中心频率为0.51 THz、带宽为41.5 GHz、插入损耗为–0.1071 dB的太赫兹带通滤波器.与传统的人工正向设计相比,逆向设计方法可解构出窄带、低插入损耗、带外抑制强、极化稳定性强的带通滤波器.

关键词：逆向设计太赫兹超表面数字编码映射建模

基于SOBI-SSI的结构工作模态识别研究

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武汉理工大学学报 2024年第1期46卷 67-74页

作者：王雄江许耀辉冯仲仁李书进武汉理工大学土木工程与建筑学院武汉430070

为提高结构模态参数的识别效率,解决随机子空间法(Stochastic Subspace Identification,SSI)中如虚假模态、模态混叠、定阶困难等问题,提出一种基于二阶盲识别算法(Secondary Order Blind Identification,SOBI)结合随机子空间法的模态... 详细信息

为提高结构模态参数的识别效率,解决随机子空间法(Stochastic Subspace Identification,SSI)中如虚假模态、模态混叠、定阶困难等问题,提出一种基于二阶盲识别算法(Secondary Order Blind Identification,SOBI)结合随机子空间法的模态参数识别方法。通过SOBI对多通道的振动信号进行盲源分离,得到单频或近似单频的模态响应时程,确定系统的阶次,然后通过快速傅里叶变换(Fast Fourier Transform,FFT)得到各阶模态响应的频谱图。设计一个具有特定通带特性的带通滤波器,使通带以外的其他频率成分抑制,从而提取出单一模态特征。最后,将只包含结构某一阶的模态信息输入到SSI中进行模态参数识别。结果表明,SOBI-SSI算法可有效剔除虚假模态和混叠模态,解决系统定阶问题,提高识别效率,且模态参数识别结果和SSI及有限元计算结果基本一致。

关键词：盲源分离二阶盲识别算法随机子空间法工作模态分析

Effect of low-degree astigmatism on the objective visual quality

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1086-1093页

作者： ling-Ying Ye shu-Feng li jing-jing Zuo jin li Hui-Xiang Ma National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhou 325027Zhejiang ProvinceChina

AIM:To evaluate the effect of low-degree astigmatism on objective visual quality through the Optical Quality Analysis System(OQAS).METHODS:This study enrolled 46 participants(aged 23 to 30y,90 eyes)with normal or corrected-to-normal vision.The cylindrical lenses(0,0.5,0.75,1.0,and 1.25 D)were placed at the axial direction(180°,45°,90°,and 135°)in front of the eyes with the best correction to form 16 types of regular low-degree astigmatism.OQAS was used to detect the objective visual quality,recorded as the objective scattering index(OSI),OQAS values at contrasts of 100%,20%,and 9%predictive visual acuity(OV100%,OV20%,and OV9%),modulation transfer function cut-off(MTFcut-off)and Strehl ratio(SR).The mixed effect linear model was used to compare objective visual quality differences between groups and examine associations between astigmatic magnitude and objective visual quality parameters.RESULTS:Apparent negative relationships between the magnitude of low astigmatism and objective visual quality were observed.The increase of OSI per degree of astigmatism at 180°,45°,90°,and 135°axis were 0.38(95%CI:0.35,0.42),0.50(95%CI:0.46,0.53),0.49(95%CI:0.45,0.54)and 0.37(95%CI:0.34,0.41),respectively.The decrease of MTFcut-off per degree of astigmatism at 180°,45°,90°,and 135°axis were-10.30(95%CI:-11.43,-9.16),-12.73(95%CI:-13.62,-11.86),-12.75(95%CI:-13.79,-11.70),and-9.97(95%CI:-10.92,-9.03),respectively.At the same astigmatism degree,OSI at 45°and 90°axis were higher than that at 0°and 135°axis,while MTFcut-off were lower.CONCLUSION:Low astigmatism of only 0.50 D can significantly reduce the objective visual quality.

关键词： low-degree astigmatism objective visual quality Optical Quality Analysis System

Evolution of inclusions in vacuum induction melting of superalloys containing 70%return material

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Journal of Iron and Steel Research(International) 2024年第3期31卷 719-728页

作者： jin-guo Gao shu-lei Yang shu-feng Yang jing-she li Wei liu Meng-jing Zhao An-ren Wang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Metallurgical and Building Materials Business Department China International Engineering Consulting CorporationBeijing 100048China

The variation law of inclusions type and size in the vacuum induction melting process and ingot of Ni-based superalloy containing 70%return material was studied by industrial test sampling,and the mechanism of inclusions formation was analyzed with thermodynamic calculations.The results show that there are mainly two types of composite inclusions in the vacuum induction melting of Ni-based superalloys,which are nitride-and oxide-based composite inclusions,like Al_(2)O_(3)-SiO_(2)-Cr_(2)O_(3),TiN-(Mo,Nb)C,etc.The type and proportion of inclusions from the center to the edge of the vacuum induction ingot did not change significantly.The number density of inclusions from the center to the edge of the ingot varied less,and the size of inclusions became smaller from the center to the edge.In addition,thermodynamic calculations show that oxides(M_(2)O_(3))are present in the liquid phase and mainly contain Al,Ti,Cr,Fe and O elements.The nitride consists mainly of Ti and N and contains small amounts of Cr,C,Nb,and Mo elements.This is consistent with the results of industrial tests.As the temperature decreases,the precipitation phases such as M_(2)O_(3),MN,γ,MC,δ,γ'andμphases are gradually precipitated,where oxides and nitrides are present in the liquid phase.The contents of O and N elements are the main influencing factors for the inclusions content and precipitation temperature;when the nitrogen content is reduced to below 0.0015%,it can make MN precipitate below the liquid-phase line.

关键词： Ni-based superalloy Vacuum induction melting Return material Inclusion Thermodynamic