Dynamic Meshing Force Analysis of Parallel Planetary Gear based on RBF Neural Network by Xia Yuan, Xiaohua Hao, Xuewen Song, Jianli Zhang, Gang An

“…The maximum meshing force and dynamic load coefficient are calculated on the prediction results， and the meshing force is proportional to the difference between speed ratio and output torque ratio minus 1， and the dynamic load coefficient on the low-speed side is greater than that on the high-speed side， which can be expressed as a multiple or reciprocal multiple relationship. …”
Get full text

Assessing the Reliability of a Multistate Logistics Network under the Transportation Cost Constraint by Qi Zeng, Xiu-Zhen Xu

“…In this paper, an algorithm is developed to calculate R(d,c) in terms of (d,c)-minimal paths ((d,c)-MPs for short). …”
Get full text

Research of the CNC Side Milling Method for ZC3 Worm Gear by Hu Yangjing, Huang Xiaotiao, Fang Chenggang, Zhang Hu

“…Finally,the simulation of the generated machining program is carried out by using the VERICUT,the correctness of the proposed method is verified by comparing with the original calculation tooth surface data. The experiment shows that the proposed method can improve the milling universality as well as the efficiency compared with the conventional method for worm gear CNC machining.…”
Get full text

Perturbatively exact supersymmetric partition functions of ABJM theory on Seifert manifolds and holography by Junho Hong

“…Through holographic duality, our perturbatively exact result is successfully matched with the regularized on-shell action of a dual Euclidean AdS4-Taub-Bolt background incorporating 4-derivative corrections, and also provides valuable insights into the logarithmic corrections that emerge from the 1-loop calculations in M-theory path integrals. In this process, we revisit the Euclidean AdS4-Taub-Bolt background carefully, elucidating the flat connection in the background graviphoton field. …”
Get full text

A New Approach to Assessing the Accuracy of Forecasting of Emergencies with Environmental Consequences Based on the Theory of Fuzzy Logic by Eduard Tshovrebov, Vladimir Moshkov, Irina Oltyan and Filyuz Niyazgulov

“…From the standpoint of solving this significant scientific and practical problem, the purpose of this work was to develop and justify a more advanced method for calculating the feasibility of forecasts of emergencies with environmental consequences as a tool for a reasonable detailed assessment of the quality, optimality of emergency forecasting processes and the reliability of the forecasts themselves.…”
Get full text

Fault Diagnosis of Planetary Gearbox Key Component based ELMD Energy Entropy and AFSA-SVM by Zhang Luyang, Qin Bo, Yin Heng, Wang Jianguo

“…Then the high dimensional feature vector set is built by calculating the energy entropy of the above PF. At last,the fault diagnosis model is developed based on AFSA-SVM algorithm,in which the extracted fault features are employed as inputs. …”
Get full text

Market-based pricing for road freight transportation by A. A. Aksentev

“…The influence of fictitious variables (body type) that improve the quality of the calculated values has been noted. Regression equations useful for determining the average market value of tariffs have been drawn up, which, when compared to actual tariffs, may indicate the adequacy of freight transactions. …”
Get full text

Prediction and evaluation of residual life of casing with corrosion defects by JIA Aoyin, QIAN Liqin, WANG Jie, YANG Jingwei, WU Yaokun, WEI Mingji

“…Therefore, there is an urgent need to conduct residual life and safety evaluations of old oil field casings.MethodsBased on the von Mises equivalent stress yield criterion, a three-dimensional finite element calculation model of casings containing corrosion defects was established to analyze the influence law of corrosion pit depth and angle on casing stress distribution. …”
Get full text

Evaluation of Vibration Performance Variation of Rolling Bearing based on Fuzzy-set Theory by Xia Xintao, Chen Xiangfeng, Cheng Li

“…Firstly,the original data sequence of the rolling bearing vibration is divided into the sample sequences,and then the intrinsic sequence is selected to calculate the standard deviation of each sample sequence and the absolute correlation degree,the gray confidence level and the closeness degree relative to the intrinsic sequence as new sample values. …”
Get full text

Application of Vibrational Power Flow to a Passenger Car for Reduction of Interior Noise by S.K. Lee

“…In this paper, a simple equation is derived for calculation of the vibrational power flow of an isolation system with multiple isolators such as a car. …”
Get full text

Study on Engagement Performance of Engagement Sleeve and Engagement Gear Ring of Without Synchronizer Transmission by Cui Wenxia, Zhang Ruiliang, Zhang Bo

“…The simulation model is compared with the theoretical calculation value, and the error is 7.3%. The effects of the speed difference between the meshing sleeve and the engagement gear ring and the shift force acting on the meshing sleeve on the meshing process are studied, and the optimum range of the speed difference is obtained. …”
Get full text

Hypertension and Dementia in the Elderly: The Leisure World Cohort Study by Annlia Paganini-Hill

“…We explored the association of hypertension and its treatment with incident dementia in 13978 older (median = 74 years) adults followed from 1981 to 2010 (median = 13 years) and calculated risk estimates using Cox regression analysis in two age groups (<75 and 75+ years) in men and women separately. …”
Get full text

Design and Optimization of E-Commerce Logistics Distribution System Based on Multiobjective Function by Hui Wen

“…The experimental results show that the optimal path is calculated as 0—2—8—5—3—1—0; 0—4—7—6—0. AIGA not only efficiently converges to the optimal solution but also stabilizes to a fitness value of 66.5, reflecting better precision than IGA. …”
Get full text

Numerical Simulation of Time Fractional BBM-Burger Equation Using Cubic B-Spline Functions by Mohsin Kamran, Muhammad Abbas, Abdul Majeed, Homan Emadifar, Tahir Nazir

“…The error norms are also calculated to check the accuracy of the proposed scheme. …”
Get full text

RESEARCH ON SEAT VERTICAL IMPАСT PULSE ENVELOPE BASED ON OCCUPANT LUMBAR INJURY INDEX by LIN Ce, LI LeiZi, LI QingFeng

“…After calibration, in order to simulate the vertical drop conditions, several impact pulses with different peaks and widths were designed, calculated and tested on 80° fixture condition, and obtained the seat vertical impact pulse envelope meeting the occupant lumbar injury index, which provide reference for the design of aireraft fuselage structure. …”
Get full text

Ship detection optimization method in SAR imagery based on multi-feature weighting by Quanhua ZHAO, Xiao WANG, Yu LI, Guanghui WANG

“…Aiming at the problem that the accuracy of traditional ship detection algorithms is not satisfying in complex scene with many false alarm targets,a ship detection optimization method in SAR imagery based on multi-feature weighting was proposed.Firstly,the marker-based watershed algorithm was employed to remove land from SAR amplitude image.Then,the CFAR algorithm based on log-normal distribution was used to obtain candidate targets from no land image.Furthermore,the length to width ratio,the ship area and the contrast ratio of the candidate targets were extracted.Finally,a variance coefficient method was proposed to distribute the weight of the three features,and the confidence levels were calculated by combining the normalized feature vectors of the candidate targets with the feature weight.By determining the best confidence level,false alarm targets among the candidate targets were removed to optimize ship detection results.In order to verify the proposed method,experiments were carried on with the GF-3 SAR images of different complex scenes.The experimental results show that the proposed method is feasible and effective.…”
Get full text

The representational instability in the generalization of fear learning by Kenny Yu, Wolf Vanpaemel, Francis Tuerlinckx, Jonas Zaman

“…Although most participants demonstrated generalization aligned with perceptual rather than physical stimulus distances, incorporating perceptual memory data into perceptual distance calculations did not enhance model performance. This suggests a potential shift in the mapping of the perceptual memory component of fear context, occurring alongside perceptual dynamics. …”
Get full text

Multi-objective Reliability Optimization of NGW Type Reducer of the Road-rail Vehicle by Wen Junhu, Zheng Wei, Hao Shuai

“…Aiming at the problem of multi-objective reliability optimization for the reducer of road-rail vehicle,firstly,it must be ensured that the electric wheel planetary gear reducer is in good working order and loading conditions meet the requirements of transmission.By applying the reliability theory and optimization design technology,the reducer weight reduction,materials saving,low cost can be realized safety and reliability is improved.The MATLAB optimization toolbox is used to solve the problem of the optimization of reducer.Taking the volume and contact ratio as multi-objective optimization function,then the multi-objective optimization problem is transformed into single-objective problem to solve by the linear weighted method.The mathematical model is established by using the safety factor method and other constraints.By using Fmincon function,the optimizing calculation and analysis are carried out,the optimal solution is got,which makes the optimization design parameters more reasonable than the original design parameters.Consequently,the results show that the working performance of the electric wheel of the road-rail vehicle is improved.…”
Get full text

From Waves to Diagnoses: Decoding Electrocardiogram for Improved Cardiac Care by Sharanya Varaganti, Rajaputana Lakshmi Manisha, Sudhakar Muvvala

“…The article emphasizes the importance of a systematic approach to ECG interpretation, highlighting six main sections: determination of heart rhythm, calculation of heart rate, assessment of intervals and blocks, analysis of atrial depolarization patterns, assessment of ventricular depolarization complexes, and delving into the intricate characteristics of ST segments and exploration of the electrocardiographic T-wave manifestations. …”
Get full text

RELIABILITY ANALYSIS OF FAILURE RELATED MECHANICAL PARTS BASED ON VINE COPULA MODEL by HU QiGuo, ZHOU Song

“…The feasibility of the improved parameter Bootstrap method is verified by Matlab simulation,then the reliability of the multi-failure mode related mechanical parts is solved by using the Vine Copula model.Finally,through the comparison between the calculation example of drive shaft and other methods,the method is rationality and validity.…”
Get full text