Towards Analysis and Optimization of Electrospun PVP (Polyvinylpyrrolidone) Nanofibers by Utkarsh, Hussien Hegab, Muhammad Tariq, Nabeel Ahmed Syed, Ghaus Rizvi, Remon Pop-Iliev

“…The effects of these parameters on the fiber diameter as output responses were investigated by analysis of variance (ANOVA) and Taguchi’s array design. Furthermore, a mathematical model was generated using response surface methodology (RSM) to model the electrospinning process. …”
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Design and Kinematics Analysis of the Wearable Lower Limb Exoskeleton by Wang Xiaowei, Chen Xu, Gao Shenglu

“…Secondly, the standard D-H method is used to build the exoskeleton kinematics mathematical model, the forward and inverse kinematics is solved through the homogeneous transformation matrix, and the correctness of the model and the solving equation is verified. …”
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ANN Approach to Predict the Flow Stress of CMn (Nb-Ti-V) Micro Alloyed Steel by Allaoui Abdelhalim, Guedri Abdelmoumene, Darsouni Lamia, Darsouni Abderrazek

“…The results can be further used in mathematical simulation of hot metal forming processes.…”
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Determining Time Variation of Cable Tension Forces in Suspended Bridges Using Time-Frequency Analysis by Gannon Stromquist-LeVoir, Kevin F. McMullen, Arash E. Zaghi, Richard Christenson

“…Discrete-time, short-time Fourier transform (STFT) was utilized to analyze the recorded acceleration histories in both time and frequency domains. A mathematical convolution of the analytical PSD function and time-frequency data was completed to evaluate changes in cable tension force over time. …”
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Analysis and Optimization of Tooth Surface Contact Parameter of ZC1 Worm Gear by Song Lijuan, Ji Weixi, Xie Jian, Wang Yu

“…Based on the meshing theory of ZC1 worm gear pair,the tooth surface contact parameters are analyzed by using MATLAB.The results show that the axial module,center distance,lead angle,radius of arc tooth profile of grinding wheel have great influence on tooth surface contact parameters.In general,the center distance is selected in the beginning of design,so the axial module,lead angle,radius of arc tooth profile of grinding wheel are selected as design variable.For improving the meshing performance of worm gear pair,taking the induced normal curvature and lubrication angle as objective function,and combining with the constraints of top thickness of worm,top thickness of worm wheel and undercutting,the optimum mathematical model is established.The improved particle swarm algorithm is adopted as optimization algorithm and the results show that the optimized lubrication angle is larger and induced normal curvature is smaller.The meshing performance of worm gear pair is improved effectively.…”
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Covert Channel Construction Method Based on HTTP Composite Protocols by Longxing Jin, Zijun Liu, Fuquan Huang, Zizhao Lin, Ming Li

“…The method simulates browser application to send HTTP requests, dynamically distributes HTTP requests to different browsers, embeds hidden information by mathematical combination, and dynamically adjusts access objects, data packet time interval, and data packet length, thus improving the concealment of the channel. …”
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Distance criterion-based quantizer design for cooperative spectrum sensing by Yuanhua FU, Zhiming HE

“…In terms of sensing node’s energy and reporting channel’s bandwidth constrains problem for cooperative spectrum sensing in cognitive radio networks,an optimal quantizer design method based on distance criterion was proposed.First of all,the Bhattacharyya distance of received quantized data at the fusion center (FC) was calculated as performance criteria,the optimization mathematical model of the quantizer was constructed,and the optimum quantization thresholds were obtained by using particle swarm optimization algorithm.According to received sensing nodes’ quantized data at the FC,a log-likelihood ratio detector was constructed to decide the presence or absence of primary user signal,the upper bound to sensing performance of energy detector that without quantization was derived.Compared with the existing methods in literatures,the performance of proposed 3-bit quantization method approaches to the upper bound performance of energy detector,under the premise of obtaining comparable detection performance,the requirement of communication bandwidth is reduced.…”
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Segment search for local extremums of images based on the analysis of brightness of adjacent homogeneous areas by V. Yu. Tsviatkou, Anh Tuan Nguyen

“…Morphological search algorithms provide the selection of non-strict extremes, but have a high computational complexity. A mathematical model and an algorithm based on the brightness analysis of adjacent homogeneous regions are proposed to isolate strict and non-strict local extremes of images with low computational complexity. …”
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Progressive Multifocal Liquid Lenses Based on Asymmetric Freeform Surface Structure of Nonuniform Thickness Elastic Membranes with Different Constraints by Weiliang Jia, Biao Zhang, Songjing Li

“…The structure and mathematical model of power distribution for the lens are introduced. …”
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A Stress-Strain Model for Brick Prism under Uniaxial Compression by Keun-Hyeok Yang, Yongjei Lee, Yong-Ha Hwang

“…The proposed model in this study turned out to be more accurate and easier to handle than previous models so that it is expected to contribute towards the mathematical simplicity of analytical modeling.…”
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Adaptive Control for Singularly Perturbed Systems by Kameron Eves, John Valasek

“…Singularly perturbed systems are a class of mathematical systems that are not well approximated by their limits and can be used to model plants with multiple fast and slow states. …”
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Analysis of Deformation Characteristics of Face Rockfill Dam with Crest Overflow in Feigu Reservoir During Operation by ZHAO Zejin, ZHOU Bin, LONG Jian, XI Lihua, ZHAN Jie

“…On the basis of the dam monitoring data,we analyze and evaluate dam deformation and dislocation distribution laws of spillway drain channels during operation upon the impounding of the face dam with crest overflow in Feigu Reservoir.The correlation analysis of environmental variables such as the reservoir water level,air temperature,and water temperature is carried out by means of mathematical statistics and spatiotemporal distribution analysis.It is concluded that the horizontal deformation and settlement of the dam crest are less than the safety warning values.Air temperature and the reservoir water level are the main environmental factors affecting dam deformation.The dislocation magnitude of the spillway drain channel is highly sensitive to temperature,but with coordinated deformation,adjacent drain channels have small disjunction momentum,and thus the spillway drain channel is in a safe state.We can reduce the uneven settlement of the spillway on the dam crest by mixing the main stone pile with a small amount of buried stone concrete.…”
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Flight Stability of Canard-Guided Dual-Spin Projectiles with Angular Rate Loops by Qiushi Zheng, Zhiming Zhou

“…Firstly, the concept of the dual-spin projectile is introduced. Secondly, the mathematical model of the dual-spin projectile is established, and the angular motion equation is finally obtained by using some linearized assumptions. …”
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On New Families of Integrals in Analytical Studies of Superconductors within the Conformal Transformation Method by Ryszard Gonczarek, Mateusz Krzyzosiak, Adam Gonczarek, Lucjan Jacak

“…After presenting the mathematical structure of the s-wave superconducting gap and other quantitative characteristics of superconductors, we evaluate and discuss integrals inherent in fundamental equations describing superconducting systems. …”
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Monitoring Model of Concrete Dam Deformation Based on Gray Wolf Optimization Algorithm by CHEN Shuyun, ZHOU Wenzhong, GU Yanchang, WANG Hong

“…Dam deformation is one of the most reliable indicators that can reflect the actual condition of concrete dam.Modeling and analysis of dam deformation monitoring data is an effective way to reflect the operation behavior of concrete dam and seek for the internal law of deformation.In addition,the mathematical model can be applied to predict the deformation.In order to improve the accuracy of modeling and deformation prediction,this paper proposes a deformation monitoring model of concrete dam based on gray wolf optimization algorithm,applies the model to the engineering examples and compares the results with that from the statistical model established by the conventional stepwise regression method and the BP-neural network.The results show that the monitoring model based on the gray wolf optimization algorithm has higher accuracy and better prediction effect.Therefore,the gray wolf algorithm is superior in establishing deformation model,which provides a new reference for deformation analysis and prediction of concrete dam.…”
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Hyperchaos on the dynamics of memristive Tabu learning neuron model under influence of electromagnetic radiation: Application in biomedical data privacy by Bertrand Frederick Boui A Boya, Jacques Kengne, Arnaud Nanfak, Sishu Shankar Muni, Jean de Dieu Nkapkop, Germaine Djuidje Kenmoe, Lyudmila Klimentyevna Babenko

“…A decent understanding is seen between the mathematical outcomes, approved through trial execution on an Arduino microcontroller-based. …”
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Analysis of coverage probability in NOMA-HetNet based on Matern cluster process by Xiaorong JING, Yixi CHEN, Qianbin CHEN

“…Considering the correlation between the users and base stations and the network irregularity,the non-orthogonal multiple access heterogeneous networks (NOMA-HetNet) based on Matern cluster process (MCP) was modeled.The coverage probability of UEs was analyzed.Firstly,the signal-to-interference-plus-noise ratios (SINR) of UEs were theoretically derived.Secondly,an updating law for the upper limit of SINR was presented for the imperfect serial interference elimination (SIC) scheme,which was more consistent with the reality.Then,using the mathematical tools such as spatial coordinate system,probability theory,stochastic geometry theory and order statistics,the correlation probability and service distances of the different types of UEs were analyzed.Finally,the theoretical expression of the coverage probability of UEs was derived.The effects of cluster radius,base station density,interference residual factors on service distances,and coverage probability are verified by numerical simulations.The simulation results are consistent with the theoretical analysis,which testifies the correctness of the theoretical analysis.…”
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Study on the Structural Design and Obstacle Barrier Performance of Double Pendulum Arms Crawler Deformable Robot by Guangyao Meng, Zhenhua Wang, Juxin Huang, Bin Guo, Hongjie Sun

“…The introduction of the rear swing arm enriches the configuration change of the robot, and the center of gravity of the robot has a large degree of adjustment during the rotation of the front and rear swing arms, the obstacle performance of the robot is improved. Mathematical models of typical obstacles such as ramps, steps and gullies are established. …”
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Low latency handover scheme for 5G dual-connectivity scenario by Xuming PEI, Jianxin JIA, Hua QIAN, Zhenghang ZHU, Zhenyu TANG, Kai KANG

“…A novel handover scheme was proposed for the secondary node (SN) unchanged 5G dual-connectivity scenarios.In the proposed novel scheme,the SN connection was maintained for data packet transmission during the handover,however,both the main node (MN) and the SN were completely disconnected in the legacy scheme.The transmission delay during handover was decreased greatly by the proposed scheme.Firstly,the legacy handover scheme was analyzed and its deficiency was figured out.Then,the novel mechanism’s signaling interaction was elaborated and the time sequence models for the novel scheme and the legacy scheme were further established.Finally,based on the time sequence model,the performance evaluation processes were carried out in terms of mathematical modeling and experimental simulations.The analysis results demonstrate that the proposed novel scheme reduces the single packet transmission delay,the average transmission delay and the total transmission delay,and has good performance advantages.…”
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Theoretical studies of the steering hydraulic system of construction and road machines with flow amplifiers by A. V. Zhdanov

“…The design, the principle of operation are described, the main calculated dependencies are presented, on the basis of which mathematical modeling was carried out. To evaluate the qualitative and quantitative characteristics of the amplifiers, graphs of transient processes in the steering hydraulic system, as well as the static characteristics of the flow amplifiers, were obtained. …”
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