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作者:Yanpeng Zhang , Hua Qu , Weipeng Wang ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:Time series forecasting models based on a linear relationship model show great performance. However, these models cannot handle the the data that are incomplete, imprecise, and ambiguous as the interval-based fuzzy time series models since the process of fuzzification is aba...
作者:Qiang Luo , Mengshi Liu , Tengfei Wang ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:Hydraulic conductivity measurement through a fixed wall permeameter is a common practice to obtain the fluid transmissibility characteristics of soil matrix; however, sidewall leakage due to rigid wall effect may significantly influence the observed values for coarse-grained soil...
作者:Linjing Lv , Bo Zhang , Jin Peng ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:Due to the complexity of financial markets, there exist situations where security returns and background factor returns are available mainly based on experts’ subjective beliefs, such as in the case of lack of historical data. To deal with such indeterminate quantities, unce...
作者:Yanming Fu , Zhuohang Li , Chiwen Qu ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:Atom search optimization algorithm has good searching ability and has been successfully applied to calculate hydrogeological parameters and groundwater dispersion coefficient. Since the atom search optimization algorithm is only based on the atom force motion model in molecular d...
作者:T. S. Jang , Vincenzo Vespri
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:In this paper, a new nonlinear initial- boundary value problem for a Boussinesq equation is formulated. And a coupled system of nonlinear integral equations, equivalent to the new initial-boundary value problem, is constructed for integrating the initial- boundary value problem, ...
作者:Baoquan Mao , Zhiqian Wang , Yuying Yang ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:This paper has proposed a fractional K-BKZ numerical model by adopting the framework of the classical K-BKZ model and the relaxation modulus of the fractional Maxwell model with quasiproperties to study the start-up flow of a viscoelastic shock absorber. The start-up flows i...
作者:Li Jingwen , Qiao Jiangang , Dou Yuanming ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:The risk factors in the safety evaluation of antifloating anchor system of underground structure have the characteristics of complexity, grey, and fuzziness. Based on the Delphi method, analytic hierarchy process (AHP), and entropy weight method, this paper establishes a three-le...
作者:Yuanqing Wang , Guichen Zhang , Zhubing Shi ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:In this paper, in order to handle the nonlinear system and the sophisticated disturbance in the marine engine, a finite-time convergence control method is proposed for the diesel engine rotating speed control. First, the mean value model is established for the diesel engine, whic...
作者:Peter J. Christopher , Barnaby Dobson , Nicholas A. Alexander ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:This paper explores the nonlinear dynamics of a multidegree of freedom (MDoF) structure impacting a rigid stop. The contact mechanics is simplified by continuous sigmoid function idealisation of a lossless spring. By introducing a smooth nonlinear formulation, we avoid the comput...
作者:Mingyong Liu , Haofeng Ku , Jinxi Zhang ...
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2020, Vol.2020
摘要:Surface contact fatigue is the main failure mode in many mechanical components, such as gears, bearings, and cam-followers. A fatigue life prediction model is proposed for finite line contact under starved thermal elastohydrodynamic lubrication (TEHL) condition in this paper. The...

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