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ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai
《环境科学与工程前沿(英文)》 2008年 第2卷 第3期 页码 370-379 doi: 10.1007/s11783-008-0054-4
关键词: Dianchi Analytical Hierarchy monitoring modified Analytical importance
Lightweight design of an electric bus body structure with analytical target cascading
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0718-y
关键词: electric vehicle body in white (BIW) lightweight analytical target cascading (ATC)
Improved analytical model for residual stress prediction in orthogonal cutting
null
《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 249-256 doi: 10.1007/s11465-014-0310-1
The analytical model of residual stress in orthogonal cutting proposed by Jiann is an important tool for residual stress prediction in orthogonal cutting. In application of the model, a problem of low precision of the surface residual stress prediction is found. By theoretical analysis, several shortages of Jiann’s model are picked out, including: inappropriate boundary conditions, unreasonable calculation method of thermal stress, ignorance of stress constraint and cyclic loading algorithm. These shortages may directly lead to the low precision of the surface residual stress prediction. To eliminate these shortages and make the prediction more accurate, an improved model is proposed. In this model, a new contact boundary condition between tool and workpiece is used to make it in accord with the real cutting process; an improved calculation method of thermal stress is adopted; a stress constraint is added according to the volume-constancy of plastic deformation; and the accumulative effect of the stresses during cyclic loading is considered. At last, an experiment for measuring residual stress in cutting AISI 1045 steel is conducted. Also, Jiann’s model and the improved model are simulated under the same conditions with cutting experiment. The comparisons show that the surface residual stresses predicted by the improved model is closer to the experimental results than the results predicted by Jiann’s model.
关键词: residual stress analytical model orthogonal cutting cutting force cutting temperature
Mahdi FAKOOR, Hadi PARVIZ
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1359-1371 doi: 10.1007/s11709-020-0658-8
关键词: composite plate spatially varying stochastic properties Galerkin method polynomial chaos approach semi-analytical approach
Zhang Harry, Yu Shaw
《环境科学与工程前沿(英文)》 2008年 第2卷 第3期 页码 267-273 doi: 10.1007/s11783-008-0058-0
关键词: representative hydrologic occurrence simulation approach scarcity alternative
Regulatory issues for genetically modified animals
Perry Bradbury HACKETT
《农业科学与工程前沿(英文)》 2020年 第7卷 第2期 页码 188-203 doi: 10.15302/J-FASE-2019307
Precision genetics and breeding have the potential to meet the agricultural needs and goals of the world in the 21st century. These needs include increasing the efficiency of production of animals and improving their products with minimal impact on the environment. The USA is the major innovator in genomic science and the acknowledged leader in formulating policies to regulate genetic applications in medicine and agriculture. However, governments worldwide have been exceedingly reluctant to support the introduction of genetically modified (GM) animals into agriculture. Regulatory policies have stagnated due to legal guidelines that could not anticipate the needs and solutions that are evident today. This must change if we are to maintain planetary integrity. I propose a new, market-based regulatory model for GM livestock that has both a strong scientific foundation and has worked for 10000 years. The model is similar to that for information technology in which specific algorithms drive computer and cell phone applications. Genome engineers write genetic algorithms that drive the traits in biological organisms. Accordingly, GM products should be viewed in terms of their use and public benefit rather than by limitations to the genetic programing coming from a few highly vocal groups. Genetic algorithms (Genapps) of the 21st century will include not only introduction of synthetic genes, but also complete natural and synthetic biochemical pathways to produce agricultural products that are maximally efficient, healthy to humans and animals, and sustainable in an era of changing climates while avoiding environmental degradation.
李鑫,Janet M Wang,唐卫清,吴慧中
《中国工程科学》 2008年 第10卷 第11期 页码 59-64
考虑实际电路中激励信号不理想对耦合互连线时延分析的影响,建立了斜阶跃信号激励下的互连线时延模型,提出了一种基于耦合RLC互连线的时延分析方法。该方法对已有的解耦算法进行了改进,将斜阶跃信号激励下的耦合互连线模型在线元分析阶段进行解耦,并结合二阶矩模型及改进的一阶模型对互连线的传递函数进行化简,进而给出耦合互连线的时延估计表达式。实验结果表明,互连线时延估计方法可以对耦合RLC互连线模型的时延进行有效评估。
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1414-6
• Challenges in sampling of NH3 sources for d15N analysis are highlighted.
关键词: Aerosol ammonium Atmospheric gaseous ammonia Isotope fingerprinting Isotope-based source apportionment Ammonia gas-to-particle conversion
Tuned reactive power dispatch through modified differential evolution technique
S. BISWAS (RAHA), N. CHAKRABORTY
《能源前沿(英文)》 2012年 第6卷 第2期 页码 138-147 doi: 10.1007/s11708-012-0188-8
关键词: reactive power dispatch (RPD) modified differential evolution (MDE) differential evolution algorithm with localizations around the best vector (DELB)
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 435-450 doi: 10.1007/s11465-021-0630-x
关键词: 7-DOF redundant manipulator inverse kinematics semi-analytical arm angle link offset
Approaching the binding between Cu(II) and aerobic granules by a modified titration and µ-XRF
Hongwei LUO,Longfei WANG,Zhonghua TONG,Hanqing YU,Guoping SHENG
《环境科学与工程前沿(英文)》 2016年 第10卷 第2期 页码 362-367 doi: 10.1007/s11783-015-0803-0
关键词: aerobic granules Cu(II) modified titration µ-XRF analysis
Comparison of analytical procedures for measuring phosphorus content of animal manures in China
null
《农业科学与工程前沿(英文)》 2019年 第6卷 第4期 页码 431-440 doi: 10.15302/J-FASE-2019279
The concentration and components of manure phosphorus (P) are key factors determining potential P bioavailability and runoff. The distribution of P forms in swine, poultry and cattle manures collected from intensive and extensive production systems in several areas of China was investigated with sequential fractionation and a simplified two-step (NaHCO -NaOH/EDTA) procedures. The mean total P concentration, determined by the sequential fractionation procedure of intensive swine, poultry and cattle manure, expressed as g·kg , was 14.9, 13.4 and 5.8 g·kg , respectively, and 4.4 g·kg in extensive cattle manure. In intensive swine, poultry and cattle manure about 73%, 74% and 79% of total P, respectively, was bioavailable (i.e., P extracted by H O and NaHCO ) and 78% in extensive cattle manure. The results indicated the relative environmental risk, from high to low, of swine, poultry and cattle manure. There is considerable regional variation in animal manure P across China, which needs to be considered when developing manure management strategies.
关键词: diet phosphorus manure phosphorus sequential P fractionation
Pengfei LIU, Dawei WANG, Frédéric OTTO, Markus OESER
《结构与土木工程前沿(英文)》 2018年 第12卷 第2期 页码 215-221 doi: 10.1007/s11709-017-0401-2
关键词: semi-analytical finite element method bearing capacity asphalt pavements moving loads dynamic response
Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon
Bingnan REN
《化学科学与工程前沿(英文)》 2011年 第5卷 第2期 页码 203-208 doi: 10.1007/s11705-010-0571-0
关键词: adsorption PH3 activated carbon kinetics thermodynamics
Vanadium and molybdenum concentrations in particulate from Palermo (Italy): analytical methods using
Diana AMORELLO,Santino ORECCHIO
《环境科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 605-614 doi: 10.1007/s11783-014-0703-8
标题 作者 时间 类型 操作
Comprehensive evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP
ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai
期刊论文
Uncertainty propagation in dynamics of composite plates: A semi-analytical non-sampling-based approach
Mahdi FAKOOR, Hadi PARVIZ
期刊论文
Critical flow-storm approach to total maximum daily load (TMDL) development: an analytical conceptual
Zhang Harry, Yu Shaw
期刊论文
δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source
期刊论文
Tuned reactive power dispatch through modified differential evolution technique
S. BISWAS (RAHA), N. CHAKRABORTY
期刊论文
Precise semi-analytical inverse kinematic solution for 7-DOF offset manipulator with arm angle optimization
期刊论文
Approaching the binding between Cu(II) and aerobic granules by a modified titration and µ-XRF
Hongwei LUO,Longfei WANG,Zhonghua TONG,Hanqing YU,Guoping SHENG
期刊论文
Comparison of analytical procedures for measuring phosphorus content of animal manures in China
null
期刊论文
Application of semi-analytical finite element method to analyze the bearing capacity of asphalt pavements
Pengfei LIU, Dawei WANG, Frédéric OTTO, Markus OESER
期刊论文
Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon
Bingnan REN
期刊论文