In-Plane Free Vibration Analysis by Using an Efficient Simple Plane Element by Majid Yaghoobi, Mohsen Sedaghatjo, Reyhaneh Alizadeh

“…The second-order deformation field is calculated by assuming a linear strain field and using the relationship between displacement and strain. …”
Get full text

Evaluation of body-self-perception of sedentary individuals aged over 30 who attended fitness center classes by Engin Gezer, Gulten Herguner, Mahmut Gulle, Mehmet Cetın

“…Means, standard deviations of all the data were calculated. Comparisons of pre-test and post-test scores of the subjects were made with Paired Samples t – test. …”
Get full text

Overhead Transmission Lines Deicing under Different Incentive Displacement by Qing He, Xi-feng Lv, Xiao-tong Zhao

“…Through the comparison of the compression strength experimental results on a series of different iced wires in low temperature environment, the authors found out that the stress generated from the wire icing area is greater than the crushing strength of the ice within the scope of the calculation parameters, which proved the validity and the feasibility of the method, and finally the suitable excitation displacement is determined. …”
Get full text

Optimization of reconfigurable SM2 algorithm over prime filed by Bin LI, Qinglei ZHOU, Xiaojie CHEN, Feng FENG

“…Aiming at the problems of inefficient of software, low utilization of hardware resources and poor scalability of SM2 algorithm, a reconfigurable optimization method of SM2 algorithm over prime filed was proposed.Through in-depth analysis of the SM2 algorithm, starting from different computation stages and characteristics, respectively using KOA fast multiplication, fast modular reduction and Barrett algorithm to achieve recommended or arbitrary parameters of the modular multiplication operation, and the radix-4 extended Euclidean algorithm was optimized and improved to accelerate the modular inverse operation.Then, in the standard projective coordinate system, the Montgomery method was used to improve the efficiency of point multiplication, and the data flow of point addition and double point was optimized to shorten the operation cycle to 12 clocks.At the same time, fast coordinate system conversion was realized inside the FPGA.Finally, the parallel scheduling management of multi-SM2 was designed and implemented to meet the computational requirements of multiple applications.The experimental results show that the optimized SM2 makes full use of FPGA resources and shortens the cycle of point multiplication.The maximum number of calculations per second is 352.48 times higher than the CPU (Intel i5-8300), which improves the performance and scalability.…”
Get full text

Comparison of Modular Control during Side Cutting before and after Fatigue by Naoto Matsunaga, Kenta Aoki, Koji Kaneoka

“…Subsequently, to compare the muscle synergies, a scalar product that evaluates the coincidence of synergies was calculated. Three muscle synergies were extracted before and after the intervention from the NMF analysis. …”
Get full text

Quantum annealing-assisted lattice optimization by Zhihao Xu, Wenjie Shang, Seongmin Kim, Eungkyu Lee, Tengfei Luo

“…In this work, we proposed a quantum annealing-assisted lattice optimization (QALO) algorithm, which is an active learning framework that integrates the Field-aware Factorization Machine (FFM) as the surrogate model for lattice energy prediction, Quantum Annealing (QA) as an optimizer and Machine Learning Potential (MLP) for ground truth energy calculation. By applying our algorithm to the NbMoTaW alloy, we reproduced the Nb depletion and W enrichment observed in bulk HEA. …”
Get full text

Aerodynamics Optimization of a Ducted Coaxial Rotor in Forward Flight Using Orthogonal Test Design by Yuening Jiang, Hai Li, Hongguang Jia

“…Multiblock grids and Multiple Frame of Reference (MFR) method are adopted for calculating aerodynamic performance of the system, hover characteristic was compared with experimental data obtained from the test stand, and the thrust performance is well predicted for various rotor spacing and a range of rpm. …”
Get full text

Dimensional Evolution of Intelligent Cars Human-Machine Interface considering Take-Over Performance and Drivers’ Perception on Urban Roads by Hao Yang, Yueran Wang, Ruoyu Jia

“…Firstly, the main driving assistance functions in the process of take-over were analyzed based on the entropy theory, and the weight values of each function for the consumer’s purchase intention were calculated. Secondly, we explored the perceived comfortable dimensions of the interactive components under typical interaction modes. …”
Get full text

Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event by Gerhard Strydom

“…Eight model input parameters were selected for inclusion in this study, and after the input parameters variations and probability density functions were specified, a total of 800 steady state and depressurized loss of forced cooling (DLOFC) transient PEBBED-THERMIX calculations were performed. The six data sets were statistically analyzed to determine the 5% and 95% DLOFC peak fuel temperature tolerance intervals with 95% confidence levels. …”
Get full text

Analysis of Spatiotemporal Dynamic Characteristics on Potential Evapotranspiration and Water Budget in Hebei Province by ZHENG Defeng, ZHAN Shiyao, CAO Yongqiang

“…The spatiotemporal dynamic characteristics of regional potential evapotranspiration can lay a theoretical foundation for regional rational crop planting and scientific agricultural irrigation.In the context of global warming and increasing evapotranspiration rates,the Penman-Monteith equation is used to calculate the potential evapotranspiration (ET₀) and water budget (K) of Hebei Province from1967 to 2019 according to the actual meteorological observation data of twelve weather stations in Hebei Province,and the characteristics of their spatiotemporal dynamic variations are analyzed.On this basis,the analysis method of the Morlet wavelet function is introduced for the cycle analysis of ET₀ and K in 53 years.The results show that ET₀ has obvious zonal characteristics,and it is generally on the rise while K is on the decline during this period.Moreover,the evapotranspiration variations vary with seasons:ET₀ shows an upward trend in spring,autumn,and winter but a downward trend in summer.The cycle of K has the most significant oscillation at 35 a,and the scope of the oscillation is prominent in summer and autumn.Therefore,obvious changes in seasonal characteristics of Hebei Province have a great impact on K.The results can provide a reliable theoretical basis for agricultural water-saving and planting structure adjustment in Hebei Province.…”
Get full text

Wear Analysis of Tooth Surface of Rack-and-pinion with Variable Mounting Distance for Rack Railway by Yingjie Xu, Peng Zheng, Yunfeng Liu, Yang Gao, Wenbo Xu

“…For this purpose， the process of variable mounting distance transmission of rack-and-pinion in the form of Strub rack railway is analyzed， and the key parameters of variable mounting distance transmission are calculated accordingly； by introducing the mounting distance step and slip distance step， the continuous transmission process of rack and pinion pair with variable mounting distance is discretized， and the mathematical model of wear volume and wear depth of tooth surface of variable installation distance rack-and-pinion is constructed； in order to verify the accuracy of the mathematical model， rack wear test is carried out； combined with concrete examples， the influence of different parameters on tooth surface wear is analyzed to obtain the key factors affecting the wear of tooth surface and their influencing rules. …”
Get full text

Geometric Models for Isotropic Random Porous Media: A Review by Helmut Hermann, Antje Elsner

“…Effective medium theory is applied to calculate physical properties for the models such as isotropic elastic moduli, thermal and electrical conductivity, and static dielectric constant. …”
Get full text

Evaluation of Grey Relation between Chaotic Characteristic and Uncertainty of Rolling Bearing Vibration Performance by Liang Ye, Xintao Xia, Zhen Chang

“…To analyze the nonlinear correlation degree between chaotic characteristics and uncertainty of bearing vibration performance， the grey relation analysis method is applied to calculate the grey confidence level between Hurst index and maximum entropy sequence after mean normalization. …”
Get full text

Simultaneous Determination of Amlodipine, Hydrochlorothiazide, and Valsartan in Pharmaceutical Products by a Combination of Full Spectrum Measurement and Kalman Filter Algorithm by Nguyen Thi Quynh Trang, Nguyen Van Hop, Nguyen Dang Giang Chau, Thuc Binh Tran

“…In this work, a new solution has been found for selecting the approximate initial value of concentration (by means of the classical least squares) and variance (calculated by the Horwitz equation) for the Kalman filter algorithm. …”
Get full text

Gamma Radiolysis Studies of Aqueous Solution of Brilliant Green Dye by D. V. Parwate, S. S. Mankar

“…The rate of reaction and rate constants were calculated and it was found that the degradation reaction follows first order kinetics. …”
Get full text

DETECTION OF DAY ANOMALIES AND ITS EFFECT; AN APPLICATION IN BIST FOOD INDEX by Murat Erdogan, Aykan Burak Bolat, Eda Oruç Erdoğan

“…In this study, while the returns calculated over the daily closing prices of the firms were determined as the dependent variable, the traded days of the week were determined as the independent variable. …”
Get full text

Safety Detection and Assessment of Aqueduct Supporting Structure under Lateral Impact Load by LI Jun, CUI Dehao, YOU Ri, HAO Jie, PAN Wenming

“…In view of the structural damage of an aqueduct pile-pillar supporting structure caused by ship collisions,relevant engineering data were collected,and on-site detection and monitoring analysis were carried out.In addition,the finite element method was used to establish a three-dimensional entity analytical model of the aqueduct pile-pillar structure.Under the joint action of the coupled foundation and pile foundation and superstructure,numerical simulation and calculation analysis were carried out on the pile-pillar collision process.The distribution and characteristics of the damage of the supporting structure caused by collisions were studied and verified.The finite element numerical simulation results show that the high-stress area of the aqueduct pile-pillar structure during the ship collision process can be divided into two categories according to the cause.One is the high-stress area caused by the direct contact load,which occurs in the collision contact surface and the adjacent area between the ship in a collision and the bearing platform,and the other is caused by the overall bending deformation of the pile-pillar structure,which occurs in the dangerous section of the pile-pillar structure and the bearing platform connection.In addition,the simulation analysis and on-site detection results are consistent.By assessing the influence of ship collisions and checking the potential safety hazards of the aqueduct,the research results lay a foundation for the maintenance,reinforcement,and design of the aqueduct.…”
Get full text

Design and Control of Nonlinear Mechanical Systems for Minimum Time by J.B. Cardoso, P.P. Moita, A.J. Valido

“…Adjoint system approach is used to calculate the sensitivities.…”
Get full text

Separation and Pre-Concentration of Cu(II) Ions by a Synthesized Ion-Imprinted Polymer by H. Faghihian, F. Ghanbari Adivi

“…The relative selectivity coefficient of IIP for Cu(II)/Zn(II), Cu(II)/Ni(II) and Cu(II)/Co(II) was calculated, when it was demonstrated that the polymer is highly selective towards Cu(II) ions. …”
Get full text

TO THE COMPARATIVE EVALUATION OF THREE-UNIT LORRY CONVOYS OF THE DIFFERENT COMPONENT SYSTEMS BY MANEUVERABILITY by Volodymyr SAKHNO, Viktor POLIAKOV, Oleg LYASHUK, Igor MUROVANYI, Valeriy STELMASHCHUK, Vasyl ONYSCHUK, Oleg TSON, Natalia ROZHKO

“…Considering that a road train as a motor vehicle is a means of increased danger, when solving problems about the possibility of operating three- and multi-link road trains, it is one of the first to take steps towards theoretical studies of their maneuverability, the results of which will be the basis for answering many technical, organizational, and legal questions. Analysis of the calculation results showed that in the established circular path with the selected gear ratios of the control drives, none of the road trains met the requirements of DIRECTIVE 2002/7 / EC. …”
Get full text