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数字经济、全国统一大市场与产业链现代化

统计与决策 2024年第5期40卷 16-21页

作者：周芸帆电子科技大学马克思主义学院成都610000

数字经济作为引领全球经济变革的重要引擎,在推动产业链现代化方面发挥着关键作用。文章选取2011—2021年中国31个省份的面板数据,探究数字经济对产业链现代化的影响,并基于全国统一大市场视角考察该影响的传导机制和门限效应。结果表明... 详细信息

数字经济作为引领全球经济变革的重要引擎,在推动产业链现代化方面发挥着关键作用。文章选取2011—2021年中国31个省份的面板数据,探究数字经济对产业链现代化的影响,并基于全国统一大市场视角考察该影响的传导机制和门限效应。结果表明:数字经济有助于促进产业链现代化;分维度来看,数字化基础对产业链现代化的促进效果明显强于数字化创新,而数字化应用的促进作用尚不明显;数字经济可通过推动全国统一大市场建设促进产业链现代化;随着全国统一大市场建设水平的不断提升,数字经济对产业链现代化的促进作用显著增强。异质性分析发现,相较于西部地区,东中部地区数字经济对产业链现代化的促进作用更显著。

关键词：数字经济全国统一大市场产业链现代化中介效应门限效应

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论“用工主体责任”的滥用趋势与规制路径

山东工会论坛 2024年第1期30卷 44-54页

作者：周云帆华东政法大学经济法学院上海200042

“用工主体责任”一词最初在建筑施工、矿山领域使用,以此纾解农民工遭受工伤的救济难题,后来逐渐扩展至其他用工领域。随着数字经济的发展,用工主体责任业已被广泛用于平台用工等新型用工领域,在各省市规范性文件和工作文件中多有出现... 详细信息

“用工主体责任”一词最初在建筑施工、矿山领域使用,以此纾解农民工遭受工伤的救济难题,后来逐渐扩展至其他用工领域。随着数字经济的发展,用工主体责任业已被广泛用于平台用工等新型用工领域,在各省市规范性文件和工作文件中多有出现,而学界对于用工主体责任的概念内涵却少有研究。究其原因,理论上用工主体责任的内涵界定从未得到重视;实践中地方立法存在进度缓慢和用词粗糙的不足。为规范用工领域的用词表达,应当排除用工主体责任在标准用工、公益性岗位用工中的适用可能;同时在新型用工管理文件中,明确用工方的责任内容,逐步探索用工企业的权责边界。

关键词：用工主体责任用工领域传统承包用工平台经济

益肾养血蠲痹方治疗膝骨关节炎的疗效及对患者膝关节功能及血清GRO-α、OPG、COMP的影响

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中医药学报 2024年第8期52卷 56-60页

作者：黄瑜钢吴晨熙周云帆孟祥奇南京中医药大学江苏南京210000 南京中医药大学附属苏州市中医医院江苏苏州215008

目的:观察益肾养血蠲痹方治疗膝骨关节炎的疗效及对患者膝关节功能和血清生长调节致癌基因-α(GRO-α)、骨保护素(OPG)、软骨寡聚基质蛋白(COMP)的影响。方法:前瞻性选取2021年12月—2023年1月收治的膝骨关节炎患者128例,采用随机数字... 详细信息

目的:观察益肾养血蠲痹方治疗膝骨关节炎的疗效及对患者膝关节功能和血清生长调节致癌基因-α(GRO-α)、骨保护素(OPG)、软骨寡聚基质蛋白(COMP)的影响。方法:前瞻性选取2021年12月—2023年1月收治的膝骨关节炎患者128例,采用随机数字表法分为西医组和方剂组。西医组给予西药治疗,方剂组给予益肾养血蠲痹方联合西药治疗。记录两组中医证候积分、视觉模拟(VAS)评分、西安大略和麦克马斯特大学(WOMAC)评分及血清氧化应激因子、GRO-α、OPG、COMP、血沉(ESR)水平变化,并统计两组总有效率。结果:方剂组的总有效率为93.74%(60/64),高于西医组的81.25%(52/64),差异有统计学意义(P<0.05)。治疗后,两组中医证候积分、VAS评分、WOMAC评分较治疗前下降(P<0.05),方剂组中医证候积分、VAS评分、WOMAC评分低于西医组(P<0.01)。治疗后,两组OPG、超氧化物歧化酶(SOD)水平较治疗前上升(P<0.05),GRO-α、COMP、ESR、丙二醛(MDA)水平较治疗前下降(P<0.05),方剂组OPG、SOD水平高于西医组(P<0.01),GRO-α、COMP、ESR、MDA水平低于西医组(P<0.05,P<0.01)。结论:益肾养血蠲痹方可有效治疗膝骨关节炎,通过调节氧化应激因子、GRO-α、OPG、COMP等因子的表达,改善膝关节功能,减轻疼痛,提高疗效。

关键词：益肾养血蠲痹方膝骨关节炎膝关节功能疼痛

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大跨度曲线预应力梁精准快速施工技术研究

江苏建筑 2024年第3期 59-62页

作者：于荣俊张育诚徐广贤朱文良张浩周蕴凡江苏德丰建设集团有限公司江苏张家港215600 江苏科技大学苏州理工学院江苏张家港215600

传统大跨曲线预应力梁施工难点较多,文章以苏州市某三层体育场馆项目为案例,通过动画指导专业班组施工,提前解决疑难点;还重点介绍了大跨度预应力梁钢筋BIM碰撞优化、主筋定位、应力应变控制及二次压浆等技术的应用;结论表明采用特制双... 详细信息

传统大跨曲线预应力梁施工难点较多,文章以苏州市某三层体育场馆项目为案例,通过动画指导专业班组施工,提前解决疑难点;还重点介绍了大跨度预应力梁钢筋BIM碰撞优化、主筋定位、应力应变控制及二次压浆等技术的应用;结论表明采用特制双向耙式可调辅架进行梁钢筋定位,可确保钢筋骨架的精准定位及安装;此外,三阶段张拉及二次压浆技术相比于传统的张拉和压浆施工工艺能有效节约人工成本和材料成本,同时还能提升预应力构件体系的牢固度和使用寿命。文章所述技术可广泛应用在大跨度预应力混凝土梁施工中。

关键词：预应力体育场馆 BIM 主筋定位应力应变多次压浆

On the Polygonal Wear Evolution of Heavy-Haul Locomotive Wheels due to Wheel/Rail Flexibility and Its Mitigation Measures

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 40-61页

作者： yunfan Yang Feifan Chai Pengfei Liu Liang Ling Kaiyun Wang Wanming Zhai State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China State Key Laboratory of Rail Transit Vehicle System Southwest Jiaotong UniversityChengdu 610031China

Wheel polygonal wear can immensely worsen wheel/rail interactions and vibration performances of the train and track,and ultimately,lead to the shortening of service life of railway *** present,wheel/rail medium-or high-frequency frictional interactions are perceived as an essential reason of the high-order polygonal wear of railway wheels,which are potentially resulted by the flexible deformations of the train/track system or other external *** this work,the effect of wheel/rail flexibility on polygonal wear evolution of heavy-haul locomotive wheels is explored with aid of the long-term wheel polygonal wear evolution simulations,in which different flexible modeling of the heavy-haul wheel/rail coupled system is ***,the mitigation measures for the polygonal wear of heavy-haul locomotive wheels are *** results point out that the evolution of polygonal wear of heavy-haul locomotive wheels can be veritably simulated with consideration of the flexible effect of both wheelset and *** of mixed-line operation of heavy-haul trains and application of multicut wheel re-profiling can effectively reduce the development of wheel polygonal *** research can provide a deep-going understanding of polygonal wear evolution mechanism of heavy-haul locomotive wheels and its mitigation measures.

关键词： Heavy-haul locomotive Wheel polygonal wear Wheel/rail flexibility Long-term polygonal wear evolution Mitigation measures

Isotropic sintering shrinkage of 3D glass-ceramic nanolattices:backbone preforming and mechanical enhancement

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International Journal of Extreme Manufacturing 2024年第2期6卷 418-426页

作者： Nianyao Chai yunfan Yue Xiangyu Chen Zhongle Zeng Sheng Li Xuewen Wang Center of Femtosecond Laser Manufacturing for Advanced Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070People’s Republic of China National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu LaboratoryFoshan 528000People’s Republic of China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070People’s Republic of China

There is a perpetual pursuit for free-form glasses and ceramics featuring outstanding mechanical properties as well as chemical and thermal *** is a promising idea to shape inorganic materials in three-dimensional(3D)forms to reduce their weight while maintaining high mechanical properties.A popular strategy for the preparation of 3D inorganic materials is to mold the organic–inorganic hybrid photoresists into 3D micro-and nano-structures and remove the organic components by subsequent ***,due to the discrete arrangement of inorganic components in the organic-inorganic hybrid photoresists,it remains a huge challenge to attain isotropic shrinkage during ***,we demonstrate the isotropic sintering shrinkage by forming the consecutive–Si–O–Si–O–Zr–O–inorganic backbone in photoresists and fabricating 3D glass–ceramic nanolattices with enhanced mechanical *** femtosecond(fs)laser is used in two-photon polymerization(TPP)to fabricate 3D green body *** subsequent sintering at 1000℃,high-quality 3D glass–ceramic microstructures can be obtained with perfectly intact and smooth ***-suit compression experiments and finite-element simulations reveal that octahedral-truss(oct-truss)lattices possess remarkable adeptness in bearing stress concentration and maintain the structural integrity to resist rod bending,indicating that this structure is a candidate for preparing lightweight and high stiffness glass–ceramic nanolattices.3D printing of such glasses and ceramics has significant implications in a number of industrial applications,including metamaterials,microelectromechanical systems,photonic crystals,and damage-tolerant lightweight materials.

关键词： 3D printing isotropic shrinkage femtosecond laser two-photon polymerization structural glass-ceramics

Learning accurate template matching with differentiable coarseto-fine correspondence refinement

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Computational Visual Media 2024年第2期10卷 309-330页

作者： Zhirui Gao Renjiao Yi Zheng Qin yunfan Ye Chenyang Zhu Kai Xu College of Computer National University of Defense TechnologyChangsha 410073China

Template matching is a fundamental task in computer vision and has been studied for *** plays an essential role in manufacturing industry for estimating the poses of different parts,facilitating downstream tasks such as robotic *** methods fail when the template and source images have different modalities,cluttered backgrounds,or weak *** also rarely consider geometric transformations via homographies,which commonly exist even for planar industrial *** tackle the challenges,we propose an accurate template matching method based on differentiable coarse-tofine correspondence *** use an edge-aware module to overcome the domain gap between the mask template and the grayscale image,allowing robust *** initial warp is estimated using coarse correspondences based on novel structure-aware information provided by *** initial alignment is passed to a refinement network using references and aligned images to obtain sub-pixel level correspondences which are used to give the final geometric *** evaluation shows that our method to be significantly better than state-of-the-art methods and baselines,providing good generalization ability and visually plausible results even on unseen real data.

关键词： template matching differentiable homography structure-awareness transformers

Flame Structure of Methane and Kerosene Combustion with a Compact Concave Flame-Holder using the LES-pdf Method

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Journal of Thermal Science 2024年第1期33卷 222-234页

作者： WANG Fang WANG yunfan WEI Guanyi LIU Denghuan JIN Jie JONES P.William School of Energy and Power Engineering Beihang UniversityBeijingBeijing 100191China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Compact flame-holders for afterburners are an increasing requirement for modern aero ***,flame-holder design is non-trivial since high inlet temperatures,velocities,and elaborate structures induce complex turbulence,combustion,and spray coupling in modern *** this work,the LES-pdf and stochastic fields-Lagrangian particle spray methods are used to investigate methane and aviation kerosene combustion structures formed by new-type concave *** flow pattern,combustion mode,and flame structure of gaseous and liquid fuel around a concave flame-holder are analyzed,discussed,and compared with experimental *** reveal that the flame stability of a concave flame-holder is better than that of the non-concave ***,when using liquid fuel,the concave flame-holder forms a stable and compact *** results suggest concave flame-holders are a promising design for compact afterburners.

关键词： concave structure flame-holder LES-pdf spray combustion flame structure AECSC

Dawn of CAR-T cell therapy in autoimmune diseases

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Chinese Medical Journal 2024年第10期137卷 1140-1150页

作者： Yuxin Liu Minghao Dong Yunhui Chu Luoqi zhou yunfan You Xiaowei Pang Sheng Yang Luyang Zhang Lian Chen Lifang Zhu Jun Xiao Wei Wang Chuan Qin Daishi Tian Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Hubei Key Laboratory of Neural Injury and Functional Reconstruction Huazhong University of Science and TechnologyWuhanHubei 430030China

Chimeric antigen receptor(CAR)-T cell therapy has achieved remarkable success in the treatment of hematological *** on the immunomodulatory capability of CAR-T cells,efforts have turned toward exploring their potential in treating autoimmune *** analysis of 210 records from 128 academic journals published by 372 institutions in 40 countries/regions indicates a growing number of publications on CAR-T therapy for autoimmune diseases,covering a range of subtypes such as systemic lupus erythematosus,multiple sclerosis,among ***-T therapy holds promise in mitigating several shortcomings,including the indiscriminate suppression of the immune system by traditional immunosuppressants,and non-sustaining therapeutic levels of monoclonal antibodies due to inherent pharmacokinetic *** persisting and proliferating in vivo,CAR-T cells can offer a tailored and precise *** paper reviewed preclinical experiments and clinical trials involving CAR-T and CAR-related therapies in various autoimmune diseases,incorporating innovations well-studied in the field of hematological tumors,aiming to explore a safe and effective therapeutic option for relapsed/refractory autoimmune diseases.

关键词： CAR-T cell therapy Autoimmune disease Immunotherapy Multiple sclerosis Neuromyelitis optica spectrum disorder Systemic lupus erythematosus