Gait and Stability Analysis of 3-PUU Wheel-legged Mobile Robot by Miao Zhiying, Li Ruiqin, Zhang Qisheng, Liang Jingjing, Meng Hongwei, Liang Shijie

“…The wheel and leg switch principle and the steering principle under wheel type mode are explained.The stability of robot moving on the road surface is analyzed according to the calculation of gravity,and the maximum step is determined. …”
Get full text

Aromaticities of Five Membered Heterocycles through Dimethyldihydropyrenes Probe by Magnetic and Geometric Criteria by Maria, Khurshid Ayub

“…Chemical shifts of dihydropyrenes were calculated at GIAO HF/6-31G(d)//B3LYP/6-31+G(d). For 1H NMR chemical shift analysis, two nonaromatic reference models are studied. …”
Get full text

Limit Cycle Predictions of Nonlinear Multivariable Feedback Control Systems with Large Transportation Lags by Tain-Sou Tsay

“…Digital simulation verifications give calculated results provide accurate limit cycle predictions of considered systems. …”
Get full text

Research on optimal parallel routing and wide diameter of unidirectional double-loop networks by Hui LIU, Zhen ZHANG, Mu-yun FANG, GXiao ZHEN, Ye-bin CHEN

“…Using this ditrib-uted model of copy nodes, the optimal parallel routing method is provided, as well as calculating method of wide diame-ter of DLN. Secondly, the parallel distance diagram(PDD) of DLN which is expanded by MDD is designed and simulated. …”
Get full text

Molecular Descriptors on Line Graphs of Cactus Chains and Rooted Products Graphs by Iftikhar Ahmad, Maqbool Ahmad Chaudhry, Tarkan Öner, Tariq Mahmood, Muhammad Hussain

“…This article obtained the calculation of molecular descriptors for line graphs of chain ortho cactus and chain para cactus graphs. …”
Get full text

A fast block partitioning algorithm for VVC intra coding based on depthwise separable convolution by Zhen YE, Guoxiang WANG, Junfeng SONG, Haokun LIU, Tiansong LI

“…The joint video exploration team (JVET) proposed versatile video coding (VVC) as a new video coding standard, and its quadtree plus multi-type tree (QTMTT) partition structure brings effective coding performance improvements.However, it brings about a sharp increase in encoding complexity, which greatly increases the encoding time.In order to solve the above problems, a fast block partitioning algorithm for VVC intra coding based on depthwise separable convolution was proposed.The pixel of coding unit (CU) was used as input, and the texture information feature of CU was extracted through depth-separable convolution.Therefore, accurate partition mode prediction was realized in the QTMT structure in VVC, and the complexity of the encoder was reduced by skipping low-probability partition modes.Experimental results show that the proposed algorithm saves 18% to 48% of encoding time on the VTM 15.2, and only brings an average performance loss of 0.15%.And the additional complexity brought by the lightweight depthwise separable convolution calculation is also negligible.…”
Get full text

Multi-level uncertain fatigue analysis of a truss under incomplete available information by R. B. P. Nonato

“…The present paper deals with the prediction of the fatigue life of a planar tubular truss, when geometrical parameters, material properties, and live loads are non-deterministic. A multi-level calculation uncertainty quantification framework code was designed to aggregate the finite element method and fatigue-induced sequential failures. …”
Get full text

ANALYSIS THE FORMULA OF STRESS INTENSITY FACTORS FOR THE COMPACT TENSION SHEAR TEST by YUAN WeiJun, XIE YuJun, CHENG ZhiFei

“…CTS specimens made from general-purpose Polystyrenes（ GPPS） under mixed Mode-I/II loading were investigated to verify the correctness of the formulas of SIFs provided in Richard’s original articles. Compared the SIFs calculated by using the formulas appeared in the literatures and the extended finite element method（ XFEM） by Abaqus. …”
Get full text

Precise deployment scheme of 10G PON based on different scenarios by Yin LIN, Xiaoxia QIN, Guodong WANG, Shutian WEI

“…At present, with the rapid development of gigabit broadband users and gigabit applications, each communication operation has begun to accelerate the construction of gigabit optical network.However, in the upgrading process of 10G PON, two difficulties have gradually emerged, namely, high equipment cost and high complexity of network construction.Three models was established, including GPON gigabit user carrying capacity measurement model, investment benefit analysis model of gigabit network construction and gigabit value community identification model, to simulate and calculate the best 10G PON port deployment scenario of a mobile company, so as to realize the precise deployment of 10G PON port and support the development of gigabit broadband service efficiently.At the same time, the three models were also applicable to any communication operators in any region.The corresponding 10G PON network deployment scenarios can be simulated and output only by inputting the current PON network data and the current community data.…”
Get full text

Evolution Process and Impact Analysis of the Dam-break Flood of Baihuatan Hydropower Station Based on HEC-RAS by JIANG Linjie, FU Chenghua, CHENG Xinyu, LIU Jian

“…Once the reservoir is destroyed,it will bring huge damage to peoples lives and regional economic development.This paper extracts the topographic information of the upstream and downstream of Baihuatan Hydropower Station by Google Earth and Arc-GIS,establishes a numerical analysis model of the river channel through HEC-RAS based on the 1∶1 000 topographic map of the hub,calculates and analyzes the evolution process and the scope of impact of dam-break flood under nine schemes,and clearly defines the submerged scope and transfer route.The results show that:The flow of the breach depends on the width of the breach.During the course of the dam-break flood,with the continuation of the flood into the reservoir,the peak flow of the downstream sections decreases slightly;The greater the flood into the reservoir is,the earlier the peak flow of downstream sections occurs;Guoyushe,Shihua Village,Caiyuanzi,and Anning Village will be flooded to a certain extent.The analysis results provide a scientific basis for the safe operation of power stations and emergency management of flood control,and a reference for the research of similar gate dam projects.…”
Get full text

Bending Vibration Analysis of Tensioned Ball Screw under Nonuniform Stress during the Cutting Process by Cheng Zhang, Jianrun Zhang

“…Taking a set of cutting force data as an example, the instantaneous frequency of tensioned ball screw in the cutting process is calculated in the end.…”
Get full text

AI based scheme on voice service quality evaluation and assurance by Guangyu LI, Yanping LIANG, Li YU, Kun WANG, Yangming CHEN, Sijia LIU

“…The voice service is one of the mainstream services under the telecommunications network.The mainstream voice service quality evaluation method in the industry is to compare the voice and audio of the transceiver and calculate the POLQA MOS, which is the standard benchmark for voice quality analysis.For telecom operators, perceive voice service quality efficiently without any infringement of user privacy, and carry out precise service quality assurance, is one of the key tasks.A system using mathematical statistics and neural network to learn the mapping between voice service feature data from network side and voice quality from user side to generate evaluation model with high accuracy and precision was proposed.On this basis, the system made use of data information from multiple fields including wireless network user level and cell level, to analyze reasons and work out solutions for poor service quality, so as to assure service quality efficiently and accurately.The result shows that the scheme has achieved good practical application results.…”
Get full text

Research on cloud computing users’ public safety trust model based on scorecard-random forest by Shengli ZHOU, Canghong JIN, Lifa WU, Zheng HONG

“…Traditional cloud computing trust models mainly focused on the calculation of the trust of users’ behavior.In the process of classification and evaluation,there were some problems such as ignorance of content security and lack of trust division verification.Aiming to solve these problems,cloud computing users’ public safety trust model based on scorecard-random forest was proposed.Firstly,the text was processed using Word2Vec in the data preprocessing stage.The convolution neural network (CNN) was used to extract the sentence features for user content tag classification.Then,scorecard method was used to filter the strong correlation index.Meanwhile,in order to establish the users’ public safety trust evaluation model in cloud computing,a random forest method was applied.Experimental results show that the proposed users’ public safety trust evaluation model outperforms the general trust evaluation model.The proposed model can effectively distinguish malicious users from normal users,and it can improve the efficiency of the cloud computing users management.…”
Get full text

New Vertical-Seam Type Double-Pond Fishway Design and Hydraulic Characteristics Analysis by XIE Meiling, FU Chenghua, WU Yijie

“…Fishway is an important channel to ensure the survival and reproduction of fish and enable migratory aquatic organisms to pass through obstacles such as dams and sluices.A new vertical-seam type double-pond fishway is designed,and the RNG κ-ε model is used to numerically simulate the fishway and calculate its hydraulic characteristics for analysis.The results show that the fishway has three mainstream areas and multiple stable recirculation areas with low flow velocity,and the indoor water flow of the fishway pond has rich flow velocity information,which can provide upstream information for different fish to help them migrate.In addition,the turbulent kinetic energy of the recirculation areas in the rest pond is small and stable along the course,and the maximum turbulent kinetic energy of the stilling basin is.As a new type of fishway,the vertical-seam type double-pond fishway can easily meet the migratory conditions of fish in terms of its hydraulic characteristics,and the relevant results can provide a reference for the engineering design of the fishway.…”
Get full text

An Improved NSGA-II Algorithm for Transit Network Design and Frequency Setting Problem by Shushan Chai, Qinghuai Liang

“…The effectiveness of the algorithm which includes the high global convergence and the applicability for the problem is verified by comparison with previous works and calculation of a real-size case. The model and algorithm can be used to provide candidates for the sustainable policy formulation of urban transit network scheme.…”
Get full text

Psychometric testing of the Maltese versions of the Exercise Benefits/Barriers Scale and Exercise Motivation Inventory – 2 by Karl Spiteri I, John Xerri de Caro II, Kate Grafton III, David Broom IV

“… # Methods Maltese-speaking participants (n = 170) aged 18 to 69 years were recruited. 72% completed both questionnaires twice within an 8-to 48-hour period. Reliability was calculated using the Spearman correlation, intraclass correlation coefficient, and Bland–Altman plots. …”
Get full text

New slot management scheme supporting ONU sleep mode by Yin-fa ZHANG, Lei JIA, Jian YANG, Tao LIU

“…Aimed at the problem of optical network units(ONU) energy saving,a new based on the polling cycle time slot management scheme was proposed.In this scheme,polling cycle was a bandwidth allocation unit,and the transceiver time slots for each ONU were assigned at the beginning of each polling cycle,then the slot allocation information was broadcasted to each ONU through a modified GATE frame.Each ONU received the GATE frame,and extracted its own slot allocation information,and thus received or transmitted data within the allocated time slots in the polling cycle.When there was no need for receiving or transmitting data,the ONU would go into sleep mode with low energy consumption.Theoretical analysis and numerical simulation calculations show that the ONU with new time slot management scheme is only 11% of the energy consumption of the ordinary ONU,While the introduction of the downlink packet delay don’t exceed 2ms,and downlink average queue length is less than 2Mbit.…”
Get full text

Gen Z sustainable consumption: evolution during and after COVID-19 by Rosa María Nava Rogel

“…In the first four months of 2021 and 2023, 662 young people born between 2000 and 2007 were surveyed; with the data collected, regression equations were calculated for each year, demonstrating a significant change in its structure with the Chow Test. …”
Get full text

An efficient spectrum sensing of mixed kernel SVM based on sampling covariance matrix by Jianyuan NIE, Jianrong BAO, Bin JIANG, Chao LIU, Fang ZHU, Jianhai HE

“…In recent years,with the blind detection algorithms were proposed,more and more blind algorithms based on sampling covariance matrix were applied to spectrum sensing.The detection threshold was an approximation,and the detection performance would be affected for this algorithms.Thus,the mixed kernel function support vector machine (SVM) efficient spectrum sensing based on sampling covariance matrix was proposed.The statistics which were maximum minimum eigenvalue (MME) and covariance absolute value (CAV) of sensing signal sampling covariance matrices were used as the feature vectors of SVM and were trained to generate a spectrum sensing classifier.The advantage of this algorithm was that it needn’t calculate the detection threshold and the extraction of features reduces size of the sample set.The genetic algorithm (GA) was used to optimize the parameters of mixed kernel function SVM algorithm.The experimental results show that the proposed method has higher detection probability than MME and CAV algorithms,and has less sensing time than SVM,which has good practicability.…”
Get full text

Detection of opening motion characteristics in DC circuit breakers based on machine vision. by Zhaoyu Ku, Jinjin Li, Dongheng Li, Huajun Dong

“…Franklin moment convolution calculations are then applied to determine sub-pixel coordinates of the image edges based on these coarse edges. …”
Get full text