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Numerical investigation of the ultimate lateral resistance of piles in soft clay
Konstantinos P. TZIVAKOS,Michael J. KAVVADAS
《结构与土木工程前沿(英文)》 2014年 第8卷 第2期 页码 194-200 doi: 10.1007/s11709-014-0251-0
关键词: laterally loaded pile soft clay p?y curves finite element method (FEM)
A pre-compensation method of the systematic contouring error for repetitive command paths
ZHANG,Y. H. CHEN,Y. P. CHEN
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 367-372 doi: 10.1007/s11465-015-0367-5
For a repetitive command path, pre-compensating the contouring error by modifying the command path is practical. To obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagation neural network to extract the function of systematic contouring errors. Furthermore, by using the extracted function, the contouring error can be easily pre-compensated. The experiment results verify that the proposed compensation method can effectively reduce contouring errors.
关键词: contouring error pre-compensation motion control system back propagation (BP) neural network
Poor adherence to P2Y12 antagonists increased cardiovascular risks in Chinese PCI-treated patients
null
《医学前沿(英文)》 2017年 第11卷 第1期 页码 53-61 doi: 10.1007/s11684-017-0502-2
Low adherence to secondary prevention medications (ATM) of patients after acute coronary syndrome (ACS) is associated with poor clinical outcomes. However, literature provides limited data on assessment of ATM and risks associated with poor in Chinese patients with ACS. In the current work, ATM was assessed in consecutively recruited patients with ACS in Tongji Hospital from November 5, 2013 to December 31, 2014. A total of 2126 patients were classified under low adherence (proportion of days covered (PDC)<50%) and high adherence (PDC>50%) groups based on their performance after discharge. All patients were followed up at the 1st, 6th, and 12th month of discharge while recording ATM and major adverse cardiac events (MACE). Bivariate logistic regression was used to identify the factors associated with ATM. Cox regression was used to analyze the association between ATM and MACE within one year after discharge. Results showed that coronary artery bypass grafting (CABG) alone had significantly lower proportion of high adherence to P2Y12 antagonists (83.0% vs. 90.7%, P<0.01) than patients treated with percutaneous coronary intervention (PCI) only. Moreover, in patients undergoing PCI, high adherence to P2Y12 antagonists decreased the risk of MACE (hazard ratio=0.172, 95% confidence interval: 0.039–0.763; P=0.021). In conclusion, PCI-treated patients are more prone to remaining adherent to medications than CABG-treated patients. High adherence to P2Y12 antagonists was associated with lower risk of MACE.
关键词: acute coronary syndromes adherence to secondary prevention medications clinical outcome
Anthony Deloge ARIYANAYAGAM,Mahen MAHENDRAN
《结构与土木工程前沿(英文)》 2014年 第8卷 第4期 页码 427-447 doi: 10.1007/s11709-014-0279-1
关键词: fire safety standard fire curve realistic design fire time-temperature curves light gauge steel frame (LSF) walls fire resistance rating fuel load
Y. G. LI, P. PILIDIS,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 446-455 doi: 10.1007/s11708-009-0042-9
关键词: gas turbine engine performance adaptation performance matching design-point performance simulation influence coefficient matrix genetic algorithm
《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-022-1560-5
具有智能外围的智能电网——能源互联网架构 Artical
Wu,Pravin P. Varaiya,Ron S. Y. Hui
《工程(英文)》 2015年 第1卷 第4期 页码 436-446 doi: 10.15302/J-ENG-2015111
关键词: 智能电网 未来电网 能源互联网 能量管理系统 可再生能源接入 电力系统运行 电力系统控制 配电自动化系统 需求侧管理
《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1543-6
● Riverine microbiomes exhibited hyperlocal variation within a single transect.
关键词: Microbiome Freshwater Taxon accumulation curve Community assembly
Phosphorous removal from wastewater by lanthanum modified Y zeolites
Weikang ZHANG, Ye TIAN
《化学科学与工程前沿(英文)》 2015年 第9卷 第2期 页码 209-215 doi: 10.1007/s11705-014-1448-4
关键词: phosphate removal wastewater lanthanum impregnation Y zeolites
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 429-447 doi: 10.1007/s11709-022-0913-2
关键词: coral aggregate concrete stress−strain curves lateral effective stress peak stress axial−lateral curves damage-constitutive model.
Seismic fragility curves for structures using non-parametric representations
Chu MAI, Katerina KONAKLI, Bruno SUDRET
《结构与土木工程前沿(英文)》 2017年 第11卷 第2期 页码 169-186 doi: 10.1007/s11709-017-0385-y
关键词: earthquake engineering fragility curves lognormal assumption non-parametric approach kernel density estimation epistemic uncertainty
Anion-exchange membrane direct ethanol fuel cells: Status and perspective
Zhao, Y.S. Li, S.Y. Shen
《能源前沿(英文)》 2010年 第4卷 第4期 页码 443-458 doi: 10.1007/s11708-010-0127-5
关键词: fuel cell direct ethanol fuel cells anion-exchange membrane ethanol oxidation reaction oxygen reduction reaction cell performance
Research on the valveless piezoelectric pump with Y-shape pipes
ZHANG Jianhui, LU Jizhuang, XIA Qixiao
《机械工程前沿(英文)》 2007年 第2卷 第2期 页码 144-151 doi: 10.1007/s11465-007-0024-8
关键词: chamber serving beneficial working frequency long-link correction
Cracking evolution behaviors of lightweight materials based on
Y. Luo, S. C. Wu, Y. N. Hu, Y. N. Fu
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 461-481 doi: 10.1007/s11465-018-0481-2
Damage accumulation and failure behaviors are crucial concerns during the design and service of a critical component, leading researchers and engineers to thoroughly identifying the crack evolution. Third-generation synchrotron radiation X-ray computed microtomography can be used to detect the inner damage evolution of a large-density material or component. This paper provides a brief review of studying the crack initiation and propagation inside lightweight materials with advanced synchrotron three-dimensional (3D) X-ray imaging, such as aluminum materials. Various damage modes under both static and dynamic loading are elucidated for pure aluminum, aluminum alloy matrix, aluminum alloy metal matrix composite, and aluminum alloy welded joint. For aluminum alloy matrix, metallurgical defects (porosity, void, inclusion, precipitate, etc.) or artificial defects (notch, scratch, pit, etc.) strongly affect the crack initiation and propagation. For aluminum alloy metal matrix composites, the fracture occurs either from the particle debonding or voids at the particle/matrix interface, and the void evolution is closely related with fatigued cycles. For the hybrid laser welded aluminum alloy, fatigue cracks usually initiate from gas pores located at the surface or sub-surface and gradually propagate to a quarter ellipse or a typical semi-ellipse profile.
关键词: fatigue crack initiation and growth fatigue damage mechanism damage tolerance defect characterization laser welded aluminum alloys
标题 作者 时间 类型 操作
Numerical investigation of the ultimate lateral resistance of piles in soft clay
Konstantinos P. TZIVAKOS,Michael J. KAVVADAS
期刊论文
A pre-compensation method of the systematic contouring error for repetitive command paths
ZHANG,Y. H. CHEN,Y. P. CHEN
期刊论文
Poor adherence to P2Y12 antagonists increased cardiovascular risks in Chinese PCI-treated patients
null
期刊论文
Development of realistic design fire time-temperature curves for the testing of cold-formed steel wall
Anthony Deloge ARIYANAYAGAM,Mahen MAHENDRAN
期刊论文
Nonlinear design-point performance adaptation approaches and their comparisons for gas turbine applications
Y. G. LI, P. PILIDIS,
期刊论文
Erratum to: Meter-scale variation within a single transect demands attention to taxon accumulation curves
期刊论文
Meter-scale variation within a single transect demands attention to taxon accumulation curves in riverine
期刊论文
Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading
期刊论文
Seismic fragility curves for structures using non-parametric representations
Chu MAI, Katerina KONAKLI, Bruno SUDRET
期刊论文
Anion-exchange membrane direct ethanol fuel cells: Status and perspective
Zhao, Y.S. Li, S.Y. Shen
期刊论文
Research on the valveless piezoelectric pump with Y-shape pipes
ZHANG Jianhui, LU Jizhuang, XIA Qixiao
期刊论文