检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

行业悄然迎来巨变:洞见中国车市年度趋势

汽车与配件 2024年第1期 40-41页

作者： j.d.Power j.d.Power

回顾2023年,中国车市电动化、智能化全面爆发,新能源汽车的崛起成为世界瞩目的焦点。与此同时,价格战的硝烟弥漫了一整年。在这充满挑战与变化的一年,j.d. Power专业咨询团队持续深入调研中国汽车市场,发现行业正在悄然迎来巨大变革。

关键词：新能源汽车电动化车市价格战咨询团队世界瞩目中国汽车市场智能化

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

座椅之争,智能化趋势下的新焦点

汽车与配件 2024年第15期 64-65页

作者： j.d.Power 不详

中国汽车行业智能化浪潮奔涌,面对用户日益增多的消费需求,整车企业纷纷将目光投向能够直观提升驾乘体验的“汽车座椅”。作为与驾乘者最直接接触的部件,汽车座椅正经历着前所未有的革新。智能化:座椅技术“新革命”随着汽车向“移动的... 详细信息

中国汽车行业智能化浪潮奔涌,面对用户日益增多的消费需求,整车企业纷纷将目光投向能够直观提升驾乘体验的“汽车座椅”。作为与驾乘者最直接接触的部件,汽车座椅正经历着前所未有的革新。智能化:座椅技术“新革命”随着汽车向“移动的第三生活空间”迈进。

关键词：汽车座椅整车企业智能化趋势消费需求新焦点生活空间直接接触

2023年中国车市,消费者、产品和服务体验都发生了哪些变化?

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

汽车与配件 2024年第3期 70-71页

作者： j.d.Power 不详

2023年已然收官,中国车市经历了跌宕起伏的一年,用三个关键词可概括为:价格战、出口强国、智能化重构。从销量答卷上来看,据乘联会数据显示,2023年1-11月国内乘用车累计批发销量为2281.9万辆,同比增长8.9%。高增长的背后,却是竞争格局... 详细信息

2023年已然收官,中国车市经历了跌宕起伏的一年,用三个关键词可概括为:价格战、出口强国、智能化重构。从销量答卷上来看,据乘联会数据显示,2023年1-11月国内乘用车累计批发销量为2281.9万辆,同比增长8.9%。高增长的背后,却是竞争格局的巨变,新能源车以两位数的增速抢占燃油车市场份额,智能化配置的渗透率不断加深,智能化体验逐渐成为产品竞争的关键。2023年,***共发布12份联合研究报告及保值率报告,深入洞悉行业变化,从多个维度聆听消费者之声。

关键词：数据显示新能源车 j.d.Power 乘用车车市智能化配置竞争格局价格战

Mathematical beauty and Palladian architecture:Measuring and comparing visual complexity and diversity

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2024年第4期13卷 729-740页

作者： j. Hyun Lee Michael j.Ostwald School of Built Environment Faculty of ArtsDesign&ArchitectureThe University of New South WalesSydneyNSW 2052Australia

Palladio’s design principles,including proportion and harmony,have often been associated with mathematical definitions of ***,the geometric and semantic properties of his fac¸ades have rarely been analysed in a holistic *** is little evidence of how mathematical beauty may be embodied in his *** research investigates complexity(fractal dimension or d)and diversity(perplexity or PP)as aesthetic indices,aiming to capture distinct characteristics of Palladian *** d and PP values of 22 Palladian villa fac¸ades are measured and analysed,before being compared with those of three Renaissance facades by Sebastiano *** combination of d and PP captures the geometric and semantic aesthetic qualities of architectural ***,the developed scatter plot of d and PP results supports the identification of four distinct aesthetic types of Palladian fac¸ade *** novel combination of d and PP measures contributes to a better understanding of one definition of the mathematical beauty of architecture,wherein“the whole is other than the sum of the parts”in compositional terms(a famous Gestalt principle).Specifically,this research provides new mathematical insights into the visual character of Palladian architecture and compares two important measures thereof.

关键词： Palladian architecture Complexity diversity Mathematical beauty Perplexity Fac¸ade design

Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mechanisms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urnal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： H.T.j.ong S.W.Lee W.j.Kim department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The superplastic behavior and associated deformation mechanisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with a grain size of 3.2μm,primarily composed of the BCCβphase and a small amount of the HCPαphase,were examined in a temperature range of 473 K to 623 *** microstructural refinement of this alloy was achieved by employing high-ratio differential speed *** best superplasticity was achieved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),where tensile elongations of 550±600%were *** the heating and holding stage of the tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider this effect when analyzing and understanding the superplastic deformation behavior and *** the investigated strain rate range,the superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,while at high strain rates,lattice diffusion-controlled dislocation climb creep was the rate-controlling deformation *** was concluded that solute drag creep is unlikely to *** the late stages of deformation at 523 K,it was observed that grain boundary sliding led to the agglomeration of theαphase,resulting in significant strain *** mechanism maps were constructed forβ-Mg-Li alloys in the form of 2d and 3d formats as a function of strain rate,stress,temperature,and grain size,using the constitutive equations for various deformation mechanisms derived based on the data of the current tests.

关键词： Magnesium-lithium alloy Superplasticity Severe plastic deformation Grain size Grain growth

在线全文

学校读者我要写书评

暂无评论

丈量宇宙最强力

环球科学 2024年第11期 24-31页

作者：斯坦利·j.布罗德斯基亚历山大·德尔克雷格·d.罗伯茨李新鹏(翻译) 崔钫(审校) 美国斯坦福大学SLAC国家加速器实验室美国弗吉尼亚州纽波特纽斯市托马斯·杰斐逊(Thomas j.fferson)国家加速器设施南京大学物理学院

宇宙中最强之力,也恰巧被称作强力。我们从来没有亲眼见证过它强大的力量,因为这种力仅作用在亚原子尺度。在这一尺度下,强力会将质子和中子中的夸克束缚在一起,然后将这些核子结合成原子核。宇宙中迄今为止已知的四种基本力是引力、电... 详细信息

宇宙中最强之力,也恰巧被称作强力。我们从来没有亲眼见证过它强大的力量,因为这种力仅作用在亚原子尺度。在这一尺度下,强力会将质子和中子中的夸克束缚在一起,然后将这些核子结合成原子核。宇宙中迄今为止已知的四种基本力是引力、电磁力、弱力和强力,其中强力是最强的——它是引力的100万亿万亿万亿(1038)倍。但与此同时,它也是我们现在所知最少的基本力。

关键词：亚原子引力夸克电磁力弱力原子核强力宇宙

Enabling Technologies for Autonomous Robotic Systems in Manufacturing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nanj.ng University of Aeronautics and Astronautics 2024年第4期41卷 403-431页

作者： ERdŐS Gábor ABAI Kristóf BEREGI Richárd CSEMPESZ j.nos CSERTEG Tamás GOdÓGábor HAj.S Mátyás HÁY Borbála HORVÁTH dániel HORVÁTH Gergely j.NIKIÁdám KEMÉNY Zsolt KOVÁCS András NACSA j.nos PANITI Imre PEdONE Gianfranco TAKÁCS Emma TIPARY Bence ZAHORÁN László VÁNCZA j.zsef Institute for Computer Science and Control Hungarian Research Network(HUN-REN SZTAKI)BudapestHungary department of Manufacturing Science and Technology Budapest University of Technology and Economics(BME)BudapestHungary EPIC InnoLabs Nonprofit Ltd. BudapestHungary Eötvös Loránd University(ELTE) BudapestHungary

Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the *** operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication *** enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by *** paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such *** case studies will be presented from recent practice at HUN-REN SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and *** various solutions have in common that they use a generic digital twin concept as their *** making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.

关键词： industrial robotics autonomy digital twin enabling technology

Non-uniform,axisymmetric misfit strain:in thin films bonded on plate substrates/substrate systems:the relation between non-uniform film stresses and system curvatures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2005年第4期21卷 362-370页

作者： Yonggang Huang d. Ngo A. j. Rosakis department of Mechanical and Industrial Engineering University of Illinois Urbana at Urbana-Champain 1206 West Green Street IL 61801 USA Graduate Aeronautical Laboratory California Institute of TechnologyPasadena CA 91125 USA

Current methodologies used for the inference of thin film stress through curvature measurements are strictly restricted to stress and curvature states which are assumed to remain uniform over the entire film/substrate system. By considering a circular thin film/substrate system subj.ct to non-uniform, but axisymmetric misfit strain distributions in the thin film, we derived relations between the film stresses and the misfit strain, and between the plate system＇s curvatures and the misfit strain. These relations feature a “local” part which involves a direct dependence of the stress or curvature components on the misfit strain at the same point, and a “non-local” part which reflects the effect of misfit strain of other points on the location of scrutiny. Most notably, we also derived relations between the polar components of the film stress and those of system curvatures which allow for the experimental inference of such stresses from full-field curvature measurements in the presence of arbitrary radial non-uniformities. These relations also feature a “non-local” dependence on curvatures making a full-field measurement a necessity. Finally, it is shown that the interfacial shear tractions between the film and the substrate are proportional to the radial gradients of the first curvature invariant and can also be inferred experimentally.

关键词： Non-uniform misfit strain Non-uniform wafer curvatures ,Stress-curvature relations Non-local effects ,Interfacial shears

d-dimer: Predictor of Postpartum Hemorrhage among Pre-Eclampsia at Kilimanj.ro Christian Medical Centre

在线全文

学校读者我要写书评

暂无评论

Open j.urnal of Obstetrics and Gynecology 2024年第6期14卷 923-937页

作者： Husna Silim Ally Nyasatu G. Chamba Raziya Gaffur Nasra Batchu Glory Mangi Pendo S. Mlay Bariki Mchome Mtoro j. Mtoro Thomas j. Kakumbi Rafiki N. Mj.ma doris Rwenyagila Eusebius Maro Fredrick Mbise Gilleard Masenga Patricia S. Swai department of Obstetrics and Gynaecology KCMC Hospital Moshi Tanzania department of Obstetrics and Gynaecology Kilimanjaro Christian Medical University College (KCMUCo) Moshi Tanzania

Background: Postpartum hemorrhage (PPH) is the maj.r contributor to maternal mortality and morbidity worldwide as well as in Tanzania. Studies have shown Pre-eclampsia as a risk indicator for Postpartum hemorrhage and d-dimer tends to rise in women with pre-eclampsia. Few studies that have shown the association between d-dimer and PPH have been controversial and differ according to ethnicity and lifestyle. Hence there is no suitable reference interval for d-dimer in predicting Postpartum hemorrhage among women with pre-eclampsia. Broad Obj.ctive: This study aimed to assess the association, sensitivity, and specificity of d-dimer as a laboratory predictor of postpartum hemorrhage among women with pre-eclampsia at KCMC hospital. Methodology: This was a hospital-based analytical cross-sectional study conducted at KCMC Hospital in Northern Tanzania from September 2022 to March 2023. A total of 195 women with pre-eclampsia were included in this study. Plasma d-dimer levels were taken from women with pre-eclampsia pre-delivery. Haematocrit was compared before and after delivery, and a fall of 10% was considered as Postpartum hemorrhage together with clinical assessment of the patient. Participants were divided among those who had severe features and those who did not have severe features and were further categorized into those who had PPH and those who did not have PPH. Logistic regression was used to determine the association between d-dimer and PPH adj.sting for other factors. The Receiver Operating Curve (ROC) was used to evaluate the predictive value. Results: Higher median d-dimer levels were seen among women who had PPH compared to those who had no PPH. d-dimer was seen to be associated with PPH, thus for every unit increase of µg/ml of d-dimer among women who had pre-eclampsia without severe features there was a 14% significant increase in the odds of having postpartum hemorrhage and a 45% significant increase of having postpartum hemorrhage among those who had pre

关键词： d-dimer Preeclampsia Postpartum Hemorrhage Tanzania