Hybrid Models for Weather Parameter Forecasting by Rashmi Bhardwaj, Varsha Duhoon

“…The forecasts from these models are further compared on the basis of errors calculated and time taken by the hybrid models and simple models in order to forecast weather parameters. …”
Get full text

RESEARCH ON THE OPTIMAL SYNTHESIS OF A MULTI-CONTOUR MECHANISM by Dorin Bădoiu

“…The synthesis of mechanisms is a complex field of study that includes, in addition to the knowledge necessary for the correct configuration of working mechanisms and those necessary for their analysis, knowledge from the field of nonlinear programming that involves the calculation of the extrema of an objective function, possibly subject to some constraints. …”
Get full text

Influence of the thermomechanical loading on the behavior of high performance concrete and ordinary concrete by Moulaï Abdellah Bouabdallah

“…In addition, the compressive strength was tested and calculated at different ages, namely 7, 14, 28 and 60 days. …”
Get full text

Stress Assessment of a Steel Bullet LPG Tank Under Differential Settlement Based on Geodetic Measurements and Sensitivity Analysis by Ferenc Tomasz, Gierasimczyk Rafał, Mikulski Tomasz

“…The algorithm involves six iterations of calculations, and after each iteration, the stiffness modified sand-gravel pillow is determined. …”
Get full text

Scanning in Dentistry: A Systematic Review by Antarik Dhar

“…Analyses of subgroups and meta-regression were used to calculate the heterogeneity. Twenty-eight papers were considered in the review and the results cover primary conclusions, oral diseases identified by intraoral scanning (IOS), and oral diagnostic tools. …”
Get full text

THE INFLUENCE OF SAMPLE SIZE AND SELECTION OF FINANCIAL RATIOS IN BANKRUPTCY MODEL ACCURACY by Yusuf Ali Al-Hroot

“…Financial ratios were calculated and categorized into two groups. The first group includes: liquidity, profitability, debt, and activity, while the second group includes ten most popular financial ratios found to be useful in earlier studies and expected to predict financial distress. …”
Get full text

AP-IO: Asynchronous Pipeline I/O for Hiding Periodic Output Cost in CFD Simulation by Ren Xiaoguang, Xu Xinhai

“…In AP-IO, dedicated background I/O processes or threads are in charge of handling the file write in pipeline mode, therefore the write overhead can be hidden with more calculation than classic asynchronous I/O. We design the framework of AP-IO and implement it in OpenFOAM, providing CFD users with a user-friendly interface. …”
Get full text

KINEMATICS ANALYSIS OF HIGH-SPEED ANGULAR CONTACT BALL BEARINGS BASED ON FINITE ELEMENT by BIAN Qiang, ZENG Guang, ZHAO ChunJiang, LIU BingYang, XIAO ZhiGang

“…The finite element simulation results are compared with the theoretical values to verify that the finite element calculation results are closer to the actual working conditions.…”
Get full text

The Coupling Effect of Pore Water Pressure and Pore Water Gravity in Unsaturated Soils under Rainfall Condition and Its Influence on Slope Stability by Nenghao Zhao, Haijun Lu, Rongtang Zhang

“…Therefore, the gravity effect of pore water in unsaturated soils cannot be neglected when calculating the stability of unsaturated soil slope under rainfall condition.…”
Get full text

Study of Oxygen Desorption from SnO: New Possibilities through Fast Intermittent Temperature-Programmed Desorption by F. Gaillard, J.-P. Joly, A. Perrard

“…The corresponding frequency factors, v, were far higher than 10 13 s −1 , indicating that re-adsorption was unlikely and that E app was equal to the activation energy for desorption, E d . Calculations using a classical desorption rate expression showed that the ITPD profiles could be simulated and compared to the experimental data successfully.…”
Get full text

Influence of Fiber Orientation on the Shear Properties of Steel Fiber-Reinforced Reactive Powder Concrete Beams by Kejia Yang, Kunliang Li, Yiwei Lin

“…According to the test results, the calculation formulas of the shear-bearing capacities of ASFRPC and SFRPC beams were established.…”
Get full text

Meshing Principle of Offset Asymmetric Face Gear and Precise Design of Complex Conjugate Tooth Surface by Shuai Mo, Wenjie Tang, Shengping Zhu, Zongxiang Yue, Hanjun Gao

“…Taking the meshing equation as constraint condition， the numerical calculation program for solving the tooth surface point cloud coordinates of offset face gear pair is compiled， and the tooth surface point cloud coordinates of offset face gear pair are solved. …”
Get full text

Numerical Simulation Study on Influence of Rock Mass Mechanical Parameters on Stability of Anti-dip Slope by CAI Guojun, CHEN Xirui, YIN Baoguo, SUN Wenpeng, CHENG Yuhang, ZHOU Yang, ZHAO Da′an, JIA Jun

“…Taking the anti-dip slope of Caizi dam in Lueyang County in southern Qinling as an example,this paper studies the effect of physical and mechanical parameters (such as tensile strength,joint stiffness,internal friction angle and cohesion) of rock mass on slope stability by discrete element software UDEC,and calculates safety factor based on discrete element strength reduction method.It can be concluded from the comparison of the displacement and deformation failure caused by the three parameters:Although the tensile strength has a limited effect on the stability of the anti-dip slope,as the tensile strength is greatly reduced,the slope instability will increase;The reasonable selection of joint stiffness plays an important role in the bending deformation of the structural surface which can affect the slope stability;As the internal friction angle and cohesion decrease,the potential damage range of the slope gradually increases.In addition,the effect of the three parameters on the toppling deformation is as follows:internal friction angle and cohesion>joint stiffness>tensile strength.…”
Get full text

Anomalous Grain Boundary Diffusion: Fractional Calculus Approach by Renat T. Sibatov

“…The mean square displacement is calculated with the use of the alternating renewal process model. …”
Get full text

Gearbox Fault Identification and Classification with Convolutional Neural Networks by ZhiQiang Chen, Chuan Li, René-Vinicio Sanchez

“…In the frequency domain, the spectrum obtained with FFT is divided into multiple bands, and the root mean square (RMS) value is calculated for each one so the energy maintains its shape at the spectrum peaks. …”
Get full text

Particle Production in Strong Electromagnetic Fields in Relativistic Heavy-Ion Collisions by Kirill Tuchin

“…I demonstrate by explicit analytical calculation that after dropping by about one-two orders of magnitude during the first fm/c of plasma expansion, it freezes out and lasts for as long as quark-gluon plasma lives as a consequence of finite electrical conductivity of the plasma. …”
Get full text

Numerical Simulation Study on Influencing Factors of Surrounding Rock Stability Based on AHP-Orthogonal Experiment Model by LI Lu

“…Taking the diversion tunnel of a hydropower station as an example,based on engineering and geological factors that affect surrounding rock stability,this paper considers elastic modulus E,cohesive force C,internal friction angle Φ,tunnel buried depth H,and tunnel radius R as influencing factors,carries out 16 sets of numerical simulation calculations under different working conditions with the principle of orthogonal experiment,and analyzes the vertical displacement at the top and the horizontal displacement at the waist of the tunnel by the range analysis and AHP method.The results show that:The primary and secondary factors affecting the vertical displacement at the top of the tunnel and their priorities are H>R>E>C>Φ,of which the weight is 43.097%,28.731%,19.117%,5.871%,3.184% respectively.The primary and secondary factors affecting the horizontal displacement at the waist of the tunnel and their priorities are H>E>R>C>Φ,of which the weight is 46.832%,21.820%,18.626%,8.160%,4.562% respectively.The combination of orthogonal range analysis and AHP method increases the satisfaction of consistency test,making the analysis results more reliable.…”
Get full text

VIRTUAL MANUFACTURING AND SIMULATION ANALYSIS OF SPIRAL BEVEL GEAR BASED ON CURVATURE ADJUSTMENT by WANG XueJun, WANG ZhongHou, LI Yan, DIAO XinWei, LIU XiaoFeng

“…Then, according to the analysis results of the cutting model, the curvature and node offset of the tooth surface are calculated for contact area adjustment. Finally, the grinding wheel section is designed according to the cutter section and the offset of the tooth surface, which is called in the virtual grinding. …”
Get full text

TOPOLOGY OPTIMIZATION DESIGN OF HIGH SPEED EMU GEARBOX by GAO Yang, QUE HongBo, BIAN Xiang, WEI YuZhou

“…According to this characteristic, a topology optimization scheme is proposed to increase the natural frequency of the box. Verified by calculation and modal test, the natural frequency of the gearbox after topology optimization is raised to an interval that avoiding the main vibration frequency of wheel shaft system and reducing the possibility of resonance. …”
Get full text

A Novel Decentralized Scheme for Cooperative Compressed Spectrum Sensing in Distributed Networks by Huang Jijun, Zha Song

“…Considering limited communication resources per CR, a decentralized implementation based on alternating direction method of multipliers is presented to calculate the Karcher mean via one-hop communications only. …”
Get full text