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Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb
《机械工程前沿(英文)》 2021年 第16卷 第4期 页码 726-746 doi: 10.1007/s11465-021-0651-5
关键词: parallel mechanism upper-limb rehabilitation singularity and workspace analyses performance evaluation optimum design
《化学科学与工程前沿(英文)》 2022年 第16卷 第6期 页码 874-885 doi: 10.1007/s11705-021-2131-1
关键词: discrete element method cohesive materials parameter calibration ring shear cell design of experiments
Baoyan Duan, Yiqun Zhang, Guangda Chen, Ze Zhao, Jianwei Mi, Xun Li, Lin Yang, Xi Li
《工程(英文)》 doi: 10.1016/j.eng.2023.11.007
This study systematically introduces the development of the world's first full-link and full-system ground demonstration and verification system for the OMEGA space solar power satellite (SSPS). First, the OMEGA 2.0 innovation design was proposed. Second, field-coupling theoretical models of sunlight concentration, photoelectric conversion, and transmitting antennas were established, and a systematic optimization design method was proposed. Third, a beam waveform optimization methodology considering both a high beam collection efficiency and a circular stepped beam shape was proposed. Fourth, a control strategy was developed to control the condenser pointing toward the sun while maintaining the transmitting antenna toward the rectenna. Fifth, a high-efficiency heat radiator design method based on bionics and topology optimization was proposed. Sixth, a method for improving the rectenna array’s reception, rectification, and direct current (DC) power synthesis efficiencies is presented. Seventh, high-precision measurement technology for high-accuracy beam-pointing control was developed. Eighth, a smart mechanical structure was designed and developed. Finally, the developed SSPS ground demonstration and verification system has the capacity for sun tracking, a high concentration ratio, photoelectric conversion, microwave conversion and emission, microwave reception, and rectification, and thus satisfactory results were obtained.
关键词: OMEGA-SSPS Full-link and full-system Beam collection efficiency Circular stepped beam shape Smart structure Field coupling theoretical model Beam pointing control
Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces
REN Hesheng, LAI Lingjun, CUI Yongzheng
《能源前沿(英文)》 2008年 第2卷 第4期 页码 374-380 doi: 10.1007/s11708-008-0079-1
关键词: coefficient dimensionless longitudinal longitudinal temperature conduction
提高在线模型识别平台效率的多目标最优实验设计框架 Article
Arun Pankajakshan, Conor Waldron, Marco Quaglio, Asterios Gavriilidis, Federico Galvanin
《工程(英文)》 2019年 第5卷 第6期 页码 1049-1059 doi: 10.1016/j.eng.2019.10.003
自动化和数字化方面的最新进展使得物理设备与其对应的虚拟设备紧密集成,从而促进了实时建模与多个过程的自动优化。此类系统提供了丰富且不断更新的数据环境,使得系统随着时间的推移做出决策,并将过程推向最优目标成为可能。在许多制造过程中,为了实现整体最优过程,必须同时评估与过程性能和成本有关的多个目标函数。本文提出了一个多目标最优实验设计框架,用于提高在线模型识别平台的效率。所提出的框架能够灵活权衡实验设计解决方案,这些解决方案可以在线计算(即在执行实验期间)。将该框架应用于流动反应器中动力学模型在线识别的案例研究,并确定了微反应器中苯甲酸(benzoic acid, BA)和乙醇酯化的动力学模型。
Ruifen Liu, Elizabeth Fassman-Beck
《环境科学与工程前沿(英文)》 2017年 第11卷 第4期 doi: 10.1007/s11783-017-0951-5
关键词: Bioretention Hydrologic process Underdrain configuration SWMM Modeling
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1431-5
•Direct seeding (DS) method led to more distributed Cd in aerial parts of rice.
关键词: Cadmium Genotypes Growth stages Micro X-ray fluorescence Planting mode
《环境科学与工程前沿(英文)》 2023年 第18卷 第4期 doi: 10.1007/s11783-024-1802-9
● Bioretention systems showed > 92% load reduction rates of PAHs.
关键词: Bioretention Polycyclic aromatic hydrocarbons HYDRUS-1D Model simulation Migration
A metadata model for collaborative experiments and simulations in earthquake engineering
Jean-Pierre BARDET, Nazila MOKARRAM, Fang LIU
《结构与土木工程前沿(英文)》 2010年 第4卷 第2期 页码 133-153 doi: 10.1007/s11709-010-0036-z
Centrifuge experiments for shallow tunnels at active reverse fault intersection
Mehdi SABAGH, Abbas GHALANDARZADEH
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 731-745 doi: 10.1007/s11709-020-0614-7
关键词: reverse fault rupture continuous tunnel geotechnical centrifuge ground surface deformations fragility curves
《农业科学与工程前沿(英文)》 2022年 第9卷 第2期 页码 187-196 doi: 10.15302/J-FASE-2021438
Quantifying the relationships between plant functional traits and ecosystem services has been promoted as an approach to achieving multifunctional grassland systems that balance productivity with other regulating, supporting and cultural services. Establishing trade-offs and synergies between traits and services has largely relied on meta-analyses of studies from different systems and environments. This study demonstrated the value of focused studies of long-term experiments in grassland systems that measure traits and services in the same space and time to better understand the ecological constraints underlying these trade-offs and synergies. An analysis is presented that uses data from the Park Grass Experiment at Rothamsted Research on above-ground productivity, species richness and soil organic carbon stocks to quantify the relationships between these three outcomes and the power of variance in plant functional traits in explaining them. There was a trade-off between plots with high productivity, nitrogen inputs and soil organic carbon and plots with high species richness that was explained by a functional gradient of traits that are indicative of contrasting strategies of resource acquisition of resource conservation. Examples were identified of using functional traits to identify opportunities for mitigating these trade-offs and moving toward more multifunctional systems.
关键词: multifunctional grassland systems / Park Grass Experiment / soil organic carbon / ecosystem service
战兴群,张炎华,赵克定
《中国工程科学》 2001年 第3卷 第11期 页码 70-73
针对柔性航天器动力学模型的降阶问题,综述了动力学建模中几种常用的模态集,介绍了用于选择系统保留模态的有关准则。通常的模态价值分析和内平衡理论是用于航天器系统模态的选取,而不是直接用于动力学建模时的部件模态或系统结构弹性变形模态的选取,因而存在如何应用上述准则于动力学建模的问题。为此,提出了一个动力学建模时的降阶策略;还提供了一个数值例子,以对采用不同的模态集建模时的结果进行比较,并表明如何采用上述准则于航天器的动力学建模。
Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU
《能源前沿(英文)》 2017年 第11卷 第4期 页码 516-526 doi: 10.1007/s11708-017-0511-5
关键词: solid sorption exhaust waste heat combined cooling and power system exergy efficiency
Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling
Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher
《环境科学与工程前沿(英文)》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0876-4
关键词: Photolysis Ozone Benzene Waste gas Simulation Synergism
Yan ZHANG,Yuan ZHANG,Tao YU
《环境科学与工程前沿(英文)》 2014年 第8卷 第4期 页码 510-518 doi: 10.1007/s11783-013-0588-y
关键词: interaction dissolved organic matters sediment sorption desorption Taihu Lake
标题 作者 时间 类型 操作
Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb
期刊论文
A “Sequential Design of Simulations” approach for exploiting and calibrating discrete element simulations
期刊论文
On the Innovation, Design, Construction, and Experiments of OMEGA-Based SSPS Prototype: The Sun Chasing
Baoyan Duan, Yiqun Zhang, Guangda Chen, Ze Zhao, Jianwei Mi, Xun Li, Lin Yang, Xi Li
期刊论文
Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces
REN Hesheng, LAI Lingjun, CUI Yongzheng
期刊论文
提高在线模型识别平台效率的多目标最优实验设计框架
Arun Pankajakshan, Conor Waldron, Marco Quaglio, Asterios Gavriilidis, Federico Galvanin
期刊论文
Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions
Ruifen Liu, Elizabeth Fassman-Beck
期刊论文
The implications of planting mode on cadmium uptake and remobilization in rice: Field experiments across
期刊论文
Migration and fate of polycyclic aromatic hydrocarbons in bioretention systems with different media: experiments
期刊论文
A metadata model for collaborative experiments and simulations in earthquake engineering
Jean-Pierre BARDET, Nazila MOKARRAM, Fang LIU
期刊论文
Centrifuge experiments for shallow tunnels at active reverse fault intersection
Mehdi SABAGH, Abbas GHALANDARZADEH
期刊论文
THE ROLE OF LONG-TERM EXPERIMENTS IN VALIDATING TRAIT-BASED APPROACHES TO ACHIEVING MULTIFUNCTIONALITY
期刊论文
Simulation and experiments on a solid sorption combined cooling and power system driven by the exhaust
Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU
期刊论文
Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling
Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher
期刊论文