Study on the Design and Tactile Percention of New Fully Actuated Bionic Hand by Xuewen Ping

“…By adopting the single current and multi-angle sensor used in combination，not only accurate control of finger joint angle is realized，at the same time，through the study of the data acquisition of angle sensor and drive current and matching processing，the current amplitude change and the joint force，current change rate and the mathematical model of hardness are established，which enrich the bionic hand tactile perception ability. …”
Get full text

Kin Competition Drives the Evolution of Earlier Metamorphosis by Bing Dong, Andy Gardner

“…Here we develop a mathematical model to investigate how kin selection shapes the optimal timing of metamorphosis from foraging, non‐reproductive larva to reproductive adult, when larvae tend to cluster with their genetic relatives. …”
Get full text

Effect of Surface Roughness on Characteristics of Textured Hydrodynamic Bearings by Hongtao Wang, Shaolin Zhang, Shuai Yang

“…For a radial hydrodynamic bearing with surface micro texture，the Gauss random rough surface is used to simulate the surface roughness of the bearing bush. A mathematical model of bearing oil film characteristics is established under the coupling of surface micro texture and roughness. …”
Get full text

Modelling of Spacecraft Dynamics at Deployment of Large Elastic Structure by V. S. Khoroshilov, A. E. Zakrzhevskii

“…The objective of the study is the creation of the generalized mathematical model and the conducting of the computational modelling of the spacecraft dynamics. …”
Get full text

Nonlinear and Robust Control Strategy Based on Chemotherapy to Minimize the HIV Concentration in Blood Plasma by Ricardo Aguilar-López, Rigel Valentín Gómez-Acata, Gerardo Lara-Cisneros, Ricardo Femat

“…For control design it is considered a simplified mathematical model of the virus infection as a benchmark. …”
Get full text

Finite Element Analysis of Dynamic Meshing Characteristic of Skew Bevel Gear with Equivocal Modification by Xiaoping Ran, Liyao Gu, Jianfan Wang

“…On the basis of the principal of gear generating machining method，the gear flank mathematical model and gear tooth flank contact line equation of skew bevel gears with equivocal modification are derived，the contact finite element dynamic analysis model with seven teeth is built，the position of edge contact in a meshing period，as well as the variation curves of contact stress and bending stress under different loads are obtained. …”
Get full text

Sensitivity-enhancing feedback control–based damage detection in delaminated smart composite plates by Yan Guo, Yanan Jiang, Zhenghua Qian, Bin Huang

“…We first introduce the adopted improved layerwise theory–based mathematical model for delamination modeling with finite element implementation. …”
Get full text

Study on Engagement Performance of Engagement Sleeve and Engagement Gear Ring of Without Synchronizer Transmission by Cui Wenxia, Zhang Ruiliang, Zhang Bo

“…The engagement process is divided into four stages: free sliding stage, tooth tip collision stage, tooth tip friction stage and inter-tooth meshing stage, a mathematical model is established. The dynamics model of the engagement process is established by Adams. …”
Get full text

An Error Tolerated Congestion Control Algorithm Based on Packet Loss Rate Measurement in Deep Space Communication Network by Junrong Yan, Yulong Lu, Peng Pan

“…Congestion control algorithms of TCP protocol previously used in space communications are mostly based on TCP Vegas algorithm.They always require accurately measurement of RTT,but it's very difficult to achieve in deep space communication networks which have very long and variable delay channel characteristics.An errors tolerated congestion control algorithm is proposed based on packet loss rate measurement.The algorithm sends data in the form of data blocks and gives an errors tolerated degree based on the history data.It measures the congestion state based on the current packet loss rate measurement,so it can achieve a smaller overhead and higher transmission efficiency.In addition,the usage of mathematical modeling methods simplifies the networks and simulates the real network traffic.The mentioned algorithm is compared with the classical congestion control algorithm.Analysis and simulation prove that thethroughput of improved algorithm is 34 percent better than Tahoe and 22 percent better than Reno,so it gets a better performance.…”
Get full text

OPTIMIZATION OF FUZZY INVENTORY MANAGEMENT IN INDUSTRIAL PROCESSES USING DEEP LEARNING ALGORITHMS: A HYBRID APPROACH FOR ENHANCING DEMAND FORECASTING AND SUPPLY CHAIN EFFICIENCY by K. Kalaiarasi*, S. Swathi

“…By transforming data into fuzzy sets and applying neural networks for demand forecasting, the proposed model optimizes inventory levels to reduce costs and prevent stockouts. A mathematical model and algorithmic implementation demonstrate the approach’s effectiveness and a numerical example highlights improvements in inventory control, including reduced holding costs. …”
Get full text

Low-Complexity User Selection for Rate Maximization in MIMO Broadcast Channels with Downlink Beamforming by Eduardo Castañeda, Adão Silva, Ramiro Samano-Robles, Atílio Gameiro

“…Based on the derived metrics we present a mathematical model that describes the dynamics of the user selection process which renders the user selection problem into an integer linear program. …”
Get full text

On-Orbit Thermal Design and Validation of 1 U Standardized CubeSat of STEP Cube Lab by Soo-Jin Kang, Hyun-Ung Oh

“…Finally, the orbital temperature of each component was predicted using a highly reliable correlated thermal mathematical model of the CubeSat obtained from the thermal balance test.…”
Get full text

Multi-objective Reliability Optimization of NGW Type Reducer of the Road-rail Vehicle by Wen Junhu, Zheng Wei, Hao Shuai

“…Aiming at the problem of multi-objective reliability optimization for the reducer of road-rail vehicle,firstly,it must be ensured that the electric wheel planetary gear reducer is in good working order and loading conditions meet the requirements of transmission.By applying the reliability theory and optimization design technology,the reducer weight reduction,materials saving,low cost can be realized safety and reliability is improved.The MATLAB optimization toolbox is used to solve the problem of the optimization of reducer.Taking the volume and contact ratio as multi-objective optimization function,then the multi-objective optimization problem is transformed into single-objective problem to solve by the linear weighted method.The mathematical model is established by using the safety factor method and other constraints.By using Fmincon function,the optimizing calculation and analysis are carried out,the optimal solution is got,which makes the optimization design parameters more reasonable than the original design parameters.Consequently,the results show that the working performance of the electric wheel of the road-rail vehicle is improved.…”
Get full text

Analysis of the Isothermal Elastohydronamic Lubrication of Inclined Double-roller Enveloping Hourglass Worm Drive by Li Jinkuan, Liu Zaixin, Zhang Cui, Zhu Yan

“…To improve the lubrication performance,antiscuffing capacity and efficiency of worm gear pairs drive,the isothermal elastohydrodynamic lubrication（ EHL） simplified model and isothermal line contact mathematical model are established based on meshing theory of inclined double-roller enveloping hourglass worm drive and the theory of EHL. …”
Get full text

Towards a long-term model construction for the dynamic simulation of HIV infection by M. Hadjiandreou, Raul Conejeros, Vassilis S. Vassiliadis

“…This study involves the mathematical modelling of long-term HIV dynamics.The proposed model is able to predict the entire trajectory of the disease:initial viremia in the early weeks of the infection, latency, and progressionto AIDS; a range spanning approximately ten years. …”
Get full text

Resistance Characteristics of Riparian Plants in South China:A Case Study of Shenzhen River by ZHENG Shaoping, TONG Xiaolei, HU Haonan

“…The water-blocking characteristics of riparian plants are an important factor affecting the flood discharge capacity of the river.Taking the Shenzhen River as an instance,this paper adopts image analysis remote sensing to analyze the changes in the growth range of riparian plants from 2008 to 2018.Based on the measured flood data and a one-dimensional mathematical model,research combinations of different channel composite roughness are set to quantitatively analyze the influence of the riparian plants on the composite roughness of the river section and then study the degree of influence of riparian plants on flood flow velocity and flood stage.The study shows that from 2008 to 2018,the riparian plants in the middle and lower reaches of the Shenzhen River expanded by nearly 30 m into the river channel.The composite roughness of the river channel increased by about 0.005.In flood conditions of once in 200,100,and 50 years,the water level of the river channel increased by 1.1 m,0.7 m,and 0.5 m,respectively.…”
Get full text

The role of a vaccine booster for a fractional order model of the dynamic of COVID-19: a case study in Thailand by Puntipa Pongsumpun, Puntani Pongsumpun, I-Ming Tang, Jiraporn Lamwong

“…A fractional-order mathematical model using Caputo-Fabrizio derivatives was developed to analyze the impact of booster doses, symptomatic and asymptomatic infections, and quarantine measures. …”
Get full text

Bifurcation Analysis of a Discrete Basener–Ross Population Model: Exploring Multiple Scenarios by A. A. Elsadany, A. M. Yousef, S. A. Ghazwani, A. S. Zaki

“…The Basener and Ross mathematical model is widely recognized for its ability to characterize the interaction between the population dynamics and resource utilization of Easter Island. …”
Get full text

PRINCIPLE AND EXPERIMENT SIMULATION OF THE TELESCOPIC CASING ANTI-SWING DEVICE OF OFFSHORE CRANE by HAN GuangDong, CHEN HaiQuan, SUN YuQing, ZHANG JinNan, WANG ShengHai

“…The telescopic sleeve device was introduced. A mathematical model of the ship,crane and telescopic sleeve is established. …”
Get full text

A pressure model of immune response to mycobacteriumtuberculosis infection in several space dimensions by Fabrizio Clarelli, Roberto Natalini

“…In this work, we propose a mathematical model which describes the early immune response to the Mtb infection in the lungs, also including the possible evolution of the infection in the formation of a granuloma. …”
Get full text