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Correction of array failure using grey wolf optimizer hybridized with an interior point algorithm None

Shafqat Ullah KHAN, M. K. A. RAHIM, Liaqat ALI

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 9, Pages 1191-1202 doi: 10.1631/FITEE.1601694

Abstract:

We design a grey wolf optimizer hybridized with an interior point algorithm to correct a faulty antenna array. If a single sensor fails, the radiation power pattern of the entire array is disturbed in terms of sidelobe level (SLL) and null depth level (NDL), and nulls are damaged and shifted from their original locations. All these issues can be solved by designing a new fitness function to reduce the error between the preferred and expected radiation power patterns and the null limitations. The hybrid algorithm has been designed to control the array’s faulty radiation power pattern. Antenna arrays composed of 21 sensors are used in an example simulation scenario. The MATLAB simulation results confirm the good performance of the proposed method, compared with the existing methods in terms of SLL and NDL.

Keywords： Failure correction Grey wolf optimizer Interior point algorithm Sidelobes Deeper null depth level

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Multivariable regression model for Fox depth correction factor

Ravi Kant MITTAL, Sanket RAWAT, Piyush BANSAL

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1, Pages 103-109 doi: 10.1007/s11709-018-0474-6

Abstract: This paper presents a simple and efficient equation for calculating the Fox depth correction factor usedClassical solution of Boussinesq theory was used originally to develop the Fox depth correction factorstraightforward, competent and easy to use for both manual and automated calculation of the Fox depth correction

Keywords： settlement embedment Fox depth correction factor regression multivariable

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Integrated management of cardiac failure: the cardiac failure clinic

Daniel LOISANCE

Frontiers of Medicine 2011, Volume 5, Issue 1, Pages 20-25 doi: 10.1007/s11684-011-0106-1

Abstract:

The prevalence of the risk factors and the risk of cardiac failure are both increasing in China.The wide range of clinical presentations of cardiac failure (acute or chronic) and of therapeutic approaches

Keywords： cardiac failure cardiac transplantation mechanical circulatory support

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The dynamic correction of collimation errors of CT slicing pictures

LIU Ya-xiong, Sekou Sing-are, LI Di-chen, LU Bing-heng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2, Pages 168-172 doi: 10.1007/s11465-006-0016-0

Abstract: The results confirm that the correction method with any of the correctors can improve the accuracy and

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CORRECTION to: A global carbon market?

Michael G. POLLITT

Frontiers of Engineering Management Pages 699-699 doi: 10.1007/s42524-019-0050-3

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: In this study, gradual and sudden reduction methods were combined to simulate a progressive failure inUsing the presented method, a progressive failure is simulated based on a linear softening law priorto a catastrophic failure, and thereafter, sudden reduction methods are employed for modeling a progressivefailure.The proposed method is intended to predict the first ply failure (FPF), LPF, and dominant failure modes

Keywords： progressive failure notched composite plate Hashin failure criterion macro mechanics approach finite

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Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: Therefore, a decision-making approach for the deviation correction trajectory and posture rectificationThe additional position change during the shield attitude correction is highlighted.

Keywords： additional position change deviation correction trajectory earth pressure balance shield mechanical

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Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Frontiers of Structural and Civil Engineering Pages 1033-1046 doi: 10.1007/s11709-023-0973-y

Abstract: This study focuses on the bending failure performance of a shield tunnel segment.A full-scale test was conducted to investigate deformation and failure characteristics.During the loading, the bending failure process can be divided into four stages: the elastic stage, workingstage with cracks, failure stage, and ultimate stage.The characteristic loads between contiguous stages are the cracking, failure, and ultimate loads.

Keywords： shield tunnel bearing capacity failure mechanism segment reinforcement

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CORRECTION to: Energy-saving operation approaches for urban rail transit systems

Ziyou GAO, Lixing YANG

Frontiers of Engineering Management Pages 698-698 doi: 10.1007/s42524-019-0047-y

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Error measurement and assemble error correction of a 3D-step-gauge

MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 388-393 doi: 10.1007/s11465-007-0067-x

Abstract: A new artifact called 3D-step-gauge consisting of a pyramid array and a compound, is proposed to calculate geometrical errors for machine tools. Only one point on each profile of the pyramid in the array is probed, and its center coordinate can be calculated. Then, the intervals of the pyramids can be transfered a length standard to measure errors. Considering the differences in the structural parameters and the location of the pyramids, a volumetric error measurement method of discrete points is presented. Furthermore, the location errors between the calibration state and the measurement state are studied and their influences on the accuracy of the position measurement are investigated on an actual machine tool. The 3D-step-gauge was tested on an actual machine tool and the measurement result shows quick assembly, convenient measurement, and high accuracy.

Keywords： volumetric pyramid assembly accuracy calibration

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Simulation on Hitting Probability of MMW Remote ControllingTrajectory Correction Munition Intercepting

Hu Ronglin,Li Xingguo

Strategic Study of CAE 2007, Volume 9, Issue 10, Pages 65-70

Abstract:

The basic principle of millimeter wave remote controlling munitions (MMW-RCTCM) is demonstrated in the introduction. Then the concept of correctable intercepting flow is proposed. And the anti-air shooting model of millimeter wave remote controlling munitions (MMW-RCTCM) intercepting mobile anti-ship missile (MACM) is established in section 2 and 3. Subsequently, the hitting probability of single MMW-RCTCM vs. single MACM as well as MMW-RCTCM flow vs. single MACM and MMW-RCTCM flow vs. MACM flow are analyzedin detail. The probabilities of the above are simulated based on the parameters of the two sides of attacking and intercepting in the 5th section. It is illustrated that comparing with the non-controlling munitions, the efficiency of MMW-RCTCM is increased remarkably. At the last, it is concluded that the MMW-RCTCM can resist the attacking of saturate flow; ultra-sonic MACM.

Keywords： MMW remote controlling trajectory correction munitions correctable intercepting flow anti-ship missile

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Overview on acute-on-chronic liver failure

Jing Zhang,Shan Gao,Zhongping Duan,Ke-Qin Hu

Frontiers of Medicine 2016, Volume 10, Issue 1, Pages 1-17 doi: 10.1007/s11684-016-0439-x

Abstract:

Liver failure (LF) is defined as severe dysfunction in hepatic synthesis, detoxification, and metabolism

Keywords： liver failure chronic liver failure acute-on-chronic liver failure diagnosis prognosis treatment

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CORRECTION to: Special issue: Decision, risk analytics and data intelligence

Xiaozhe ZHAO, Desheng Wu

Frontiers of Engineering Management Pages 697-697 doi: 10.1007/s42524-020-0139-8

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Surficial stability analysis of soil slope under seepage based on a novel failure mode

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 712-726 doi: 10.1007/s11709-021-0729-5

Abstract: Therefore, a novel failure mode involving three sliding zones (upper tension zone, middle shear slidingSubsequently, the new failure mode was verified via a numerical finite element analysis based on theThe results obtained by the new failure mode agree well with those obtained by the numerical analysis

Keywords： soil slope seepage surficial failure mode stress state edge effects

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LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7, Pages 871-881 doi: 10.1007/s11709-022-0863-8

Abstract: The failure criteria of practical soil mass are very complex, and have significant influence on the safetyThe Coulomb strength criterion and the power-law failure criterion are classically simplified.machine (LSSVM), a machine learning model, is purposefully provided to establish a complex nonlinear failurepercentage error, and mean square error indicate that fitting precision of the machine learning-based failureBased on the proposed LSSVM approach to determine the failure criterion, the limit equilibrium method

Keywords： slope stability safety factor failure criterion least square support vector machine