Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method by Jiao Wang, Yue-hao Zhang, Tao Yu, Qing-kai Han

“…The dynamical equation for a rotational viscoelastic damping block-blade (VE-blade) in a centrifugal force field and aerodynamic force field is established to calculate the dynamical natural frequency and responses of the VE-blade. …”
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Study on Landscape Fractal of Different Vegetation Coverage in Hilly Area of South China— Taking Conghua District of Guangzhou City as an Example by CHANG Jin, XIANG Huichang, BIAN Zhen, LIAO Jianwen

“…Based on the fractal theory,this paper calculates the area,fractal dimension and stability index of patches with different vegetation coverage in Conghua District,and analyzes the distribution and variation law of patch fractal characteristics in different elevation,slope and aspect.The results show that:①The vegetation condition in Conghua District is generally good,and the patch area with medium (>45%) and above vegetation coverage accounts for 86.7% of the total vegetation area.The farther it is from towns and highways,the more complex and irregular the patch shape is.② When the elevation is less than 90 m,the proportion of patch area with low,medium and low vegetation coverage is larger,and the shape of all kinds of patches is fragmented and complex.When the elevation is higher than 90 m,the fractal dimension of patches increases and the stability decreases with the increase of elevation.③The topographic slope in Conghua District is mainly below 25 degrees.The patches with low and middle vegetation coverage are mainly distributed in the area below 15 degrees,while those with high vegetation coverage are dominant in the area above 15 degrees.With the increase of slope,the fractal dimension and stability index of patches with the same vegetation coverage do not change significantly.④The vegetation condition of sunny slope is better than that of shady slope,but the patch structure of shady slope is more complex.…”
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Research on Width Optimization of Bearing Coal Pillar Between Roadways Under the Influence of Mining on Both Sides by Linjun Peng, Kaixuan Gong, Manchao He

“…Taking Jinjitan Coal Mine as the engineering background, using theoretical analysis and calculation through numerical simulation, the distribution of internal stress field and plastic zone of different widths coal pillars under the influence of mining on one side and mining on both sides is compared and analyzed; the original 20 m coal pillar between 113 working face transportation roadway and auxiliary transportation roadway (i.e., 111 working face air return roadway) in Jinjitan Coal Mine was optimized. …”
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Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil by Narges Tabatabaei, Michel J. Cervantes, Chirag Trivedi

“…Aerodynamic performance coefficients and pressure profiles were calculated and validated for the Reynolds number of 1.83 × 106. …”
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Graph Energy Variants and Topological Indices in Platinum Anticancer Drug Design: Mathematical Insights and Computational Analysis with DFT and QTAIM by Suha Wazzan, Nurten Urlu Ozalan

“…In addition, we employ density functional theory DFT calculations to optimize the molecular structures of platinum anticancer drugs and identify local reactive sites using Fukui functions. …”
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Synthesis of a Transfer Function With Real Poles From Tabulated Frequency Response Data for Transmission-Line Impedance Modeling by Taku Noda

“…The TL impedance whose frequency response is in most cases calculated by analytical formulas and prepared in the form of tabulated data shows variation with respect to frequency due to skin effects in conductors and the ground, and synthesis of the frequency variation theoretically requires real poles only. …”
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Reliability Optimization Design of Two-stage Planetary Gear Wheel Hub Reducer based on MATLAB by Ke Fengqin, Tang Shixing

“…According to the structural characteristics of the two-stage planetary gear wheel hub reducer,the traditional design method is used to analyze the reliability of the planetary gear system,and the parameters of the gear system are optimized according to the calculated reliability. The system maximum reliability is changed into the gear reliability maximum as multiple objective functions. …”
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FINANCING OF LINEAR ROAD INFRASTRUCTURE IN POLAND by Stanisław Bereziński, Tomasz Rokicki

“…The comparative method was used in the paper, dynamics indicators were evaluated, the Gini concentration coefficient was calculated and the degree of concentration was presented using the Lorenz curve. …”
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Effect of individual variations in genes related to dopamine brain transmission on performance with and without rewards during motor sequence and probabilistic learning tasks in ch... by Barrett Dryden, Jesse Matsubara, Eric Wassermann, Hans Forssberg, Diane L Damiano

“…To evaluate potential genetic influences on learning in young people with and without CP, we calculated individual dopamine-related gene scores and compared these to the ability to learn two different tasks, an implicit sequence learning task and a probablistic classification task. …”
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Speed Proportional Integrative Derivative Controller: Optimization Functions in Metaheuristic Algorithms by Luis Fernando de Mingo López, Francisco Serradilla García, José Eugenio Naranjo Hernández, Nuria Gómez Blas

“…The fitness developed in this paper contains features and equations from the mathematical background of proportional integrative derivative controllers to calculate the best performance of the system. Such results are applied to quantitatively evaluate the performance of twenty-one optimization algorithms. …”
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Configuration and Motion Modeling of a New Parallel Machine Tool Based on 3-RRRS Mechanism by Chunmei Pan, Ruolan Wang, Liwei Li, Liangwen Wang, Yalei Shi, Shizhao Zhang

“…Secondly，the modeling analysis of the machine tool based on 3-RRRS mechanism is carried out and the motion and control models of each mechanism variables are given in machine tool operation. Finally，the calculation example is given and the result is verified by using a motion simulation. …”
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Numerical Simulation Modeling of Carbonate Reservoir Based on Rock Type by Peiqing Lian, Cuiyu Ma, Bingyu Ji, Taizhong Duan, Xuequn Tan

“…Then, the water saturation is calculated for each grid, and a 3D water saturation model is established. …”
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Pengaruh Metode Pembelajaran Brainstorming Terhadap Kemampuan Berpikirkritis Materi Vertebrata Pada Siswa SMA by Dzaalika Aldeirre, Ratna Komala, Erna Heryanti

“…Testing statistical hypothesis based on calculations that have been done, obtained p-value<α is 0,000<0.05 then. …”
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The Association between the Serum Uric Acid Level and Hypertension in Middle-Aged and Elderly Adults by Xianpeng Xu, Jinke Huang, Simin Wu, Qingjie Ji, Xuguang Guo, Yong Huang

“…If nonlinearity was observed, the inflection point was further calculated by a recursive algorithm. Results. A positive relationship between the sUA level and the incident of HTN was found. …”
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Attribution Analysis of Runoff Change in the Upper Reaches of the Liuchong River Basin Based on Coupled Water-energy Balance Equation by LONG Da, DONG Qianjin, YANG Rongfang

“…Taking the upper reaches of the Liuchong River in Guizhou Province as the study area,this paper first analyzes the trend and abrupt change of the annual runoff at Qixingguan Station in the Liuchong River by the Mann-Kendall test and Pettitt test to find the abrupt change points,then,discusses the reasons of runoff change before and after the abrupt change points by the coupled water-energy balance equation,finally,calculates the contribution rates of precipitation,potential evapotranspiration and underlying surface to runoff change through the sensitivity analysis of their elastic coefficients.The results show that:The depth of runoff in the upper reaches of the Liuchong River shows a significant downward trend from 1971 to 2009,and a significant abrupt change occurred in 1986.By comparing the sensitivity of precipitation,potential evapotranspiration,and underlying surface to runoff change,it is found that the elastic coefficient of precipitation is the highest,followed by the underlying surface index,and finally the potential evapotranspiration,indicating that runoff is the most sensitive to the change of precipitation.In addition,based on the results of the contribution rate of the three factors to the reduction of runoff,it is found that the contribution rate of decreasing precipitation to runoff reduction is as high as 113.3%,followed by the change of underlying surface,with a contribution rate of 14.4% and finally the increasing potential evapotranspiration,with a contribution rate of -27.7%.…”
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Research on the Estimation Model of Electrical Parameters of Silver-Based Contacts Based on Surface Morphology by Chao Wang, Xiancheng Wang, Chengjun Guo

“…Various original profile signals such as surface roughness, waviness, and surface form error are calculated using wavelet transformation, and a robust weight function is introduced to separate micro-textural features from macro-textural features. …”
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Evaluation Method of Regional Water Resources Carrying Capacity Based on Connection Number by DONG Tao

“…,carrying ability system,carrying pressure system and regulation ability system),calculates the subjective weights of evaluation indexes by correcting analytic hierarchy process based on accelerating genetic algorithm (AGA-CAHP),the objective weights of evaluation indexes by projection pursuit based on accelerating genetic algorithm (AGA-PP) and the combined weights of evaluation indexes by the principle of minimum relative information entropy,obtains the connection number of regional water resources carrying capacity by improved set pair analysis based on grey correlation analysis,and then establishes a set pair analysis evaluation model for regional water resources carrying capacity based on entropy principles,combined weights and grey correlation analysis,and finally applies the model in Anhui Province.The results show that the water resources carrying capacity of Anhui Province was in the critical overload from 2005 to 2015,while that was gradually increasing from 2012 to 2015,with the southern region stronger than the northern region.The evaluation results accorded with the actual situation.Therefore,the model can fully integrate the subjective experience information and objective information in the evaluation process,with reasonable results.It has great application value in the comprehensive evaluation of regional resources and environmental carrying capacity.…”
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FAILURE PREDICTION OF BOLTED CONNECTION OF COMPOSITE MATERIALS BASED ON DEEP LEARNING (MT) by PENG Fan, ZOU SiNong, REN YiRu

“…Using finite element software, the data set of peak failure load of bolted laminates was calculated to construct the deep learning neural network. …”
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Form Pressure in Composite Columns of 3DPC and SCC by Silfwerbrand Johan

“…The form pressure was close to the one calculated with Gardner’s model. No failures, cracks or leakage occurred. …”
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Simulation-Based Tracking Test and Optimization of Large-Tonnage Box Girder Transport with Trolley on an Erected Bridge by Lei Wang, Zhong-da Lv, Ai-min Xu, Fei Wang, Xin-long Dong

“…Tracking tests on dead load, prestressed load, and the transport load have shown that the calculated stress values obtained by the refined models are very close to the measured stress values. …”
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