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Efficiency Optimization of Variable Frequency Variable Speed Water-supply Pumping Stations Based on Genetic Algorithm

Liao Li,Lin Jiaheng,Zhang Chenghui

Strategic Study of CAE 2002, Volume 4, Issue 9, Pages 54-58

Abstract: This paper presents an optimal scheduling model of water-supply pumping stations based on approximation

Keywords： water-supply pumping station approximation of numerical value optimization genetic algorithm

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A case study on sample average approximation method for stochastic supply chain network design problem

Yuan WANG, Ruyan SHOU, Loo Hay LEE, Ek Peng CHEW

Frontiers of Engineering Management 2017, Volume 4, Issue 3, Pages 338-347 doi: 10.15302/J-FEM-2017032

Abstract: Deterministic equivalent model with nonanticipativity constraints, branch-and-fix coordination, sample average approximation

Keywords： supply chain network stochastic demand sampling average approximation Bayesian bootstrap Latin hypercube

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the subway station and the analysis of the test result

Zhang Jiqing,Suo Xiaoming

Strategic Study of CAE 2010, Volume 12, Issue 12, Pages 18-22

Abstract: proceeded for the structure of Beijing underground diameter side penetrating one station of metro line 2 by numericalvalue analysis.The comparative analysis and reasons of difference analysis is proceeded too between predicted valueand measured value.

Keywords： large diameter shield subway station deformation forecast monitoring numerical value analysis

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Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1, Pages 17-22 doi: 10.1007/s11465-008-0015-4

Abstract: To reconstruct the shape of the scatterer in elastic media, the authors deduce the Born approximationidentification of the geometrical character of a flaw is then given by the two dimensional inverse Born approximationAt the same time, the numerical results are obtained by the finite element method.

Keywords： approximation scatterer scattering problem information inverse

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Approximation Space of Generalization and Rough Classification Algebra

Liu Yonghong

Strategic Study of CAE 2006, Volume 8, Issue 3, Pages 39-48

Abstract:

Some new basic concepts are proposed in this paper, including the approximation space of generalization, rough approximation axiom, disturbance set axiom, classification principle of rough set, principle

Keywords： approximation space of generalization rough set rough classification algebra protocol relation rough

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Galerkin approximationwith Legendre polynomials for a continuous-time nonlinear optimal control problem Article

Xue-song CHEN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10, Pages 1479-1487 doi: 10.1631/FITEE.1601101

Abstract: We investigate the use of an approximation method for obtaining near-optimal solutions to a kind of nonlinearThe approach derived from the Galerkin approximation is used to solve the generalized Hamilton-Jacobi-BellmanThe Galerkin approximation with Legendre polynomials (GALP) for GHJB equations has not been applied toNumerical examples show that the update control laws converge to the optimal control for nonlinear CT

Keywords： Generalized Hamilton-Jacobi-Bellman equation Nonlinear optimal control Galerkin approximation Legendre

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Value Engineering/Value Management Model and Application of Aerospace Projects

Wan-hua Qiu,Han-peng Zhang,Ze-Shui Xu,De-Sheng Wu

Frontiers of Engineering Management 2015, Volume 2, Issue 4, Pages 373-377 doi: 10.15302/J-FEM-2015056

Abstract: This paper presents a new space model developed by general value engineering/value management model.realization of the development object as the basic point, to get the final optimization structure by value

Keywords： aerospace project value engineering value optimization value stream design structure matrix

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Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Frontiers in Energy 2015, Volume 9, Issue 4, Pages 461-471 doi: 10.1007/s11708-015-0377-3

Abstract: The higher heating value of five types of non-woody biomass and their torrefaction char was predicteddata, the mass fraction of fixed carbon and volatile matter had a strong effect on the higher heating valueanalysis data, the mass fraction of carbon, hydrogen, and oxygen had a strong effect on the higher heating value, while no relationship between the higher heating value and mass fractions of nitrogen and sulfur was

Keywords： higher heating value correlation biomass proximate analysis ultimate analysis

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Value and governance of high-speed railway

Xiaoyan LIN, Zehua ZHANG, Meng WANG

Frontiers of Engineering Management 2017, Volume 4, Issue 4, Pages 463-482 doi: 10.15302/J-FEM-2017054

Abstract: considers multiple perspectives to explore the concept of high-speed railway (HSR), rationally abstract its valueThis paper analyzes the governance potential of major countries in the high-speed railway value chain

Keywords： high-speed railway value communication value high-speed railway value governance governance path upgrade

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Meeting deadlines for approximation processing in MapReduce environments Article

Ming-hao HU, Chang-jian WANG, Yu-xing PENG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11, Pages 1754-1772 doi: 10.1631/FITEE.1601056

Abstract: To provide timely results for big data analytics, it is crucial to satisfy deadline requirements for MapReduce jobs in today’s production environments. Much effort has been devoted to the problem of meeting deadlines, and typically there exist two kinds of solutions. The first is to allocate appropriate resources to complete the entire job before the specified time limit, where missed deadlines result because of tight deadline constraints or lack of resources; the second is to run a pre-constructed sample based on deadline constraints, which can satisfy the time requirement but fail to maximize the volumes of processed data. In this paper, we propose a deadline-oriented task scheduling approach, named ‘Dart’, to address the above problem. Given a specified deadline and restricted resources, Dart uses an iterative estimation method, which is based on both historical data and job running status to precisely estimate the real-time job completion time. Based on the estimated time, Dart uses an approach–revise algorithm to make dynamic scheduling decisions for meeting deadlines while maximizing the amount of processed data and mitigating stragglers. Dart also efficiently handles task failures and data skew, protecting its performance from being harmed. We have validated our approach using workloads from OpenCloud and Facebook on a cluster of 64 virtual machines. The results show that Dart can not only effectively meet the deadline but also process near-maximum volumes of data even with tight deadlines and limited resources.

Keywords： MapReduce Approximation jobs Deadline Task scheduling Straggler mitigation

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The value of epigenetic markers in esophageal cancer

Xiao-Mei ZHANG, Ming-Zhou GUO,

Frontiers of Medicine 2010, Volume 4, Issue 4, Pages 378-384 doi: 10.1007/s11684-010-0230-3

Abstract: This review is mainly focused on epigenetic changes in esophageal cancer and the value of early detection

Keywords： epigenetics DNA methylation esophageal cancer dysplasia

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On the added value of multi-scale modeling of concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1, Pages 1-23 doi: 10.1007/s11709-021-0790-0

Abstract: This review of the added value of multi-scale modeling of concrete is based on three representative examplesOverall, it is concluded that multi-scale models have indeed a significant added value.

Keywords： experiments multi-scale analysis conventional structural analysis concrete reinforced concrete

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Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Frontiers in Energy 2014, Volume 8, Issue 4, Pages 426-433 doi: 10.1007/s11708-014-0314-x

Abstract: dynamics for the induction motor into the linear parametric varying (LPV) system, the differential mean value

Keywords： observer design differential mean value theorem (DMVT) sector nonlinearity transformation linear matrix

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The Building of Papermaking Enterprise’s Recycling Economy Evaluation Index System Based on Value Flow

Zhi-fang Zhou,Jing Ou,Sha-sha Wang,Xiao-hong Chen

Frontiers of Engineering Management 2016, Volume 3, Issue 1, Pages 9-17 doi: 10.15302/J-FEM-2016009

Abstract: The authors take advantage of the intrinsic correlation between the basic principle of value flow analysisand circular economy, and then analyze the dynamic changes of material flow and value flow through enterprises

Keywords： circular economy the papermaking enterprise material flow analysis value flow analysis evaluation index

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Does oil price affect the value of firms? Evidence from Tunisian listed firms

Kaouther ZAABOUTI,Ezzeddine BEN MOHAMED,Abdelfettah BOURI

Frontiers in Energy 2016, Volume 10, Issue 1, Pages 1-13 doi: 10.1007/s11708-016-0396-8

Abstract: A new debate on the potential impact of oil price changes on the value of firms was initiated in thisUsing a stochastic frontier approach, an attempt was made to derive the optimal value * of firms andcalculate the value observed.between 2007 and 2011, the fact that variation of oil prices can largely explain distortions in the value

Keywords： industrial Tunisian firms oil price value of firm stochastic frontier approach