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Innovations in Intelligent Systems and Applications conference

作者： M. Munzer Alseed Erkan Kaplanoglu Mehmed Ozkan Institute of Biomedical Engineering Bogazici University Istanbul Turkey College of Engineering and Computer Science The University of Tennessee at Chattanooga Tennessee USA

ISBN: (数字)9781728191362

ISBN: (纸本)9781728191379

This model is an attempt to optimize the design and control of anthropomorphic hands, and highlight some aspects that should be considered in that context. Matlab environment was used to model an index digit and move its PIP and DIP joints based on the behavior observed in natural human digits. The static model considered the correlation between PIP and DIP joints, as well as their range of motion, and it included phalanges, joints, and two flexion tendons, each to flex one joint. An animation was introduced to represent that motion using Matlab plots. After that, a third partially-elastic tendon was attached for extension, of which the dynamics were modelled using Simulink, in order to study the time required for the digit to completely extend from its maximum flexion for different elasticity constants. Finally, a search algorithm was used to optimize the elasticity constant required for an extension time of 0.5 second from full flexion.

关键词： Tendons mathematical model Indexes Electronics packaging Ligaments Software packages Joints

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Thermal modelling of a small wind turbine gearbox for condition monitoring

Thermal modelling of a small wind turbine gearbox for condit...

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7th International conference on Renewable Power Generation, RPG 2018

作者： Corley, Becky Carroll, James McDonald, Alasdair Wind Energy and Control Centre University of Strathclyde Glasgow United Kingdom

This study details the development of a mathematical thermal model of a small wind turbine gearbox for use in condition monitoring. The model was optimised and partially validated using experimental data from a wind turbine drivetrain test rig. The model was then used to mimic bearing faults, by simulating additional heat losses at respective faulty components. The extent to which the thermal behaviour changed as a result of a fault was studied, with a view to use such an approach to detect and locate faults. © 2019 Institution of engineering and Technology. All rights reserved.

关键词： Condition monitoring

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A mathematical optimization model for secondary settler

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Journal of Physics: conference Series 2021年第1期2063卷

作者： Zahir Bakiri Laboratoire de Génie des Procédés Chimiques (LGPC) Department of Chemical Engineering Ferhat Abbas University of Setif-1 19000 Algeria Department of Chemical Engineering Salah Boubnider Constantine 3 University Constantine Algeria

The study of secondary settler modelling, which aims to establish the main model (one-dimensional-1D model), which is involved in some fundamental processes of the hydrodynamic behaviour of this liquid/solid separation unit and to engender variations of the sludge blanket height as a function of the operating parameters and maintaining of the municipal wastewater treatment plant of Setif. The objective of this research is focused on solid/liquid separation in the secondary settler by attempting a mathematical model that allows us to evaluate the sedimentation velocity as a function of the sludge settleability parameters.

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Numerical modelling of Round Bars Rolling Process in Three-High Skew Rolling Mill HDQT-R 30-12

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IOP conference Series: Materials Science and engineering 2021年第1期1161卷

作者： M Peković S Benešová Faculty of Mechanical Engineering – Regional Technological Institute University of West Bohemia Univerzitní 8 306 14 Pilsen Czech Republic

In the 21 st century, numerical analysis is a proven tool for research and development of manufacturing processes. mathematical modelling provides information about the behaviour of various materials during forming processes, for instance. The real-world process is therefore represented by an abstract mathematical model, on which calculations are performed. Three-roll skew rolling can be used for various grades of steel. This paper presents the results of a theoretical analysis of skew rolling of bars with an initial diameter of 30 mm for three different carbon steels, S235JRC, C45 and C60, and austenitic stainless steel AISI 321. The final diameter of the rolled bars was 22 mm and was achieved in a single pass. Several different rolling speeds were used for the stainless steel. The simulations were carried out using DEFORM 2D/3D software. The behaviour of the materials during rolling was analysed, including the values of effective strain and stress.

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modelling and evaluation of electromagnetic field of urban high-voltage power line

Modelling and evaluation of electromagnetic field of urban h...

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Energy Efficiency and Agricultural engineering (EE&AE), International conference on

作者： Atanas G. Chervenkov Technical University of Sofia Sofia Bulgaria

ISBN: (数字)9781728103624

ISBN: (纸本)9781728103631

An electromagnetic field EMF generated by high voltage overhead transmission line in an urban environment is presented. The electromagnetic interference generated by overhead high-voltage HV line is considered. The levels of the electric field and magnetic field around HV urban lines are investigated. They are calculated analytically and simulated numerically for various realistic cases like normal mode and short circuit mode. The magnetic field of a high-voltage power line under lightning strike is also simulated. An impact of electromagnetic field in electrical devices in adjacent building and people, which is located nearby urban HV line, is being studied. Model validation of numerical simulation with measuring results of electric field of an existing transmission line 110 kV is done. Results of the electric and magnetic field analysis of the overhead urban line were assessed to check the compliance exposure limits with the existing requirements. The presented method for the electromagnetic field modeling could be used for the evaluation of the impact on the human body by simulations of different, unusual situations like lightning strike.

关键词： Conductors Magnetic fields Lightning Finite element analysis Electric fields mathematical model Poles and towers

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mathematical modelling of AHL production in Exiguobacterium MPO strain

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BIOCHEMICAL engineering JOURNAL 2018年 138卷 54-62页

作者： Shamshuddin, Zeeshan Kirse, Christoph Briesen, Heiko Doble, Mukesh Indian Inst Technol Bhupat & Doti Mehta Sch Biosci Dept Biotechnol Bioengn & Drug Design Lab Madras Tamil Nadu India Tech Univ Munich Chair Proc Syst Engn Gregor Mendel Str 4 D-85354 Freising Weihenstephan Germany

The cell to cell communication between bacteria is termed as quorum sensing, which maybe inter or intra species. This phenomenon is mediated by auto inducer molecules including N-Acyl Homoserine Lactones (AHL). The concentration of AHL generally reaches a maximum and decreases as a function of time. However, under certain conditions which promote slower growth of the bacteria, two maxima are seen in its concentration. This paper describes the mathematical modelling of AHL production by a member of the Exiguobacterium genus. A set of ordinary differential equations describe the dynamic behaviour of biomass, dissolved oxygen, substrate, and AHL concentration. The model fits the experimental data well with fewer parameters than those reported in literature. It is capable of describing both single and dual maxima seen in AHL production. This study suggests a possible mechanism of QS system in Exiguobacterium species. The developed model can help in identifying a potential harvesting time at which AHL concentration is maximum under reactor conditions. (C) 2018 Elsevier B.V. All rights reserved.

关键词： Exiguobacterium sp. N-Acyl Homoserine Lactone mathematical modelling Quorum sensing Bioreactor Marine medium

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Development of a passing collision warning system prototype for overtaking trucks on two-lane highways 12

Development of a passing collision warning system prototype ...

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12th International Transportation Specialty conference 2018, Held as Part of the Canadian Society for Civil engineering Annual conference 2018

作者： Hassein, Udai Diachuk, Maksym Easa, Said Department of Civil Engineering Ryerson University Toronto Canada

ISBN: (纸本)9781510889712

Passing collisions are one of the most serious traffic safety problems on two-lane highways. These collisions occur when the driver cannot correctly assess the situation. This paper provides the framework design for a passing collision warning system (PCWS) that assists drivers, avoiding passing collisions on two-lane highways by reducing the probability of human error. The system uses sensors to identify the impeding vehicle type and to detect opposing vehicles travelling in on the oncoming lane. The objectives of this research are: (1) to design driving simulator experiments for data collection to calculate passing parameters, (2) to develop the PCWS algorithm based on camera and radar sensors' signals for the detection of a truck (impeding vehicle), (3) to develop a the driver handling model that describes situations, in which steering wheel action is necessary for lane changes and maneuver interruptions, and (4) to develop SUV and articulated vehicle dynamic models which are represented as universal Simulink blocks combined in one simulation scenario. The simulation series were carried out to confirm the effectiveness of the PCWS algorithm. This study involved the investigation of the effect of driver behaviour on passing maneuvers, and the development of the algorithms for a PCWS that assists drivers in the selection of proper passing gaps during passing maneuvers. Certain techniques, such as mathematical and imitation models, were enhanced in order to replicate real-life driving situations in Simulink. The different factors that affect system accuracy were also examined. © 12th International Transportation Specialty conference 2018, Held as Part of the Canadian Society for Civil engineering Annual conference 2018. All rights reserved.

关键词： Simulink

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Trend analysis of the extreme ground-level ozone concentration for 25 air monitoring station in Peninsular Malaysia

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AIP conference Proceedings 2022年第1期2465卷

作者： Siti Aisyah Zakaria Nor Azrita Mohd Amin Nur Amalina Mat Jan Noor Fadhilah Ahmad Radi Nasrul Hamidin 1Institute of Engineering Mathematics Faculty of Applied and Human Science Universiti Malaysia Perlis Kampus Pauh Putra 02600 Arau Perlis Malaysia 2Institute of Engineering Mathematics Faculty of Applied and Human Science Universiti Malaysia Perlis Kampus Pauh Putra 02600 Arau Perlis Malaysia 3Department of Mathematical Science Faculty of Science Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia 4Faculty of Computer & Mathematical Sciences Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia 5School of Environmental Engineering University Malaysia Perlis 02600 Arau Perlis Malaysia

Trend analysis of extreme ground-level ozone (GLO) concentration is one of the common thoughts to ensure the continuous improvement in ozone performing. This paper aims to identify the GLO concentration trends at 25 air monitoring stations in Peninsular Malaysia for understanding the pattern occur in all GLO data. The trend analysis has been examined by method of non-stationarity test and trend test. The objective of this analysis is to classify the nonstationarity and trend behaviour occur in the GLO data concentration and to examine the performance. Results from the ADF (Augmented Dickey-Fuller) test reveals that stationarity exist in all stations whereas the Kwiatkowski–Phillips–Schmidt–Shin (KPSS) test shows only 8 stations have a stationarity. Next, for the trend test using Mann-Kendall. In a test of maximum ground-level ozone concentration increasing after displaying positive Kendall Z-values for 12 stations, 9 stations were found to be dropping after having a negative Kendall Z-value, and the remaining station showed no trend. This trend analysis can be used for monitoring of the performance of level in ground-level ozone concentration and can be used as an idea to statistician to continue the analysis in order to further investigation about ground-level ozone performance.

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Improved Spiking Neural Networks with multiple neurons for digit recognition

Improved Spiking Neural Networks with multiple neurons for d...

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International conference on Awareness Science and Technology (iCAST)

作者： Vinay Kumar Reddy Chimmula Lei Zhang Dhanya Palliath Abhinay Kumar Faculty of Engineering and Applied Science University of Regina Saskatchewan Canada Electronics Engineering Sreenidhi Institute of Science and Technology Hyderabad India

ISBN: (数字)9781728191195

ISBN: (纸本)9781728191201

For more than a decade Deep Learning, a subset of machine learning have been using for many applications such as forecasting, data visualization, classification etc. However, it consumes more energy and also takes longer training periods for computation, when compared to human brain. In most cases, it is difficult to reach human level performance. With the recent technological improvements in neuroscience and thanks to neuromorphic computing, we now can achieve higher classification efficacy for producing the desired outputs with considerably lower power consumption. Latest advancements in brain simulation technologies has given a breakthrough for analysing and modelling brain functions. Despite its advancements, this research remains undiscovered due to lack of coordination between neuroscientists, electronics engineers and computer scientists. Recent progress in Spiking Neural Networks(SNN) led towards integration different fields under one single roof. Biological neurons inside human brain communicate with each other through synapses. Similarly, bio-inspired synapses in the neuromorphic model mimic the biological neuro synapses for computing. In this novel research, we have modelled a supervised Spiking Neural Network algorithm using Leaky Integrate and Fire (LIF), Izhikevich and rectified linear neurons and tested its spike latency under different conditions. Furthermore, these SNN models are tested on the MNIST dataset to classify the handwritten digits, and the results are compared with the results of the Convolutional Neural Network (CNN).

关键词： Neurons Computational modeling mathematical model Biological neural networks Membrane potentials Biological system modeling Capacitors

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On the Total Amount of the Occupied Resources in the Multi-resource QS with Renewal Arrival Process 18th

On the Total Amount of the Occupied Resources in the Multi-r...

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18th International conference on Information Technologies and mathematical modelling, ITMM 2019

作者： Galileyskaya, Anastasia Lisovskaya, Ekaterina Pagano, Michele Tomsk State University 36 Lenina Avenue Tomsk634050 Russia Department of Information Engineering University of Pisa Via Caruso 16 Pisa56122 Italy

ISBN: (纸本)9783030333874

In this paper we analyse a multi-resource queueing system with renewal arrival process and arbitrary service time distribution. In more detail, we apply the dynamic screening method to obtain the asymptotic expression for the stationary probability distribution describing the process of the total volume of the occupied resource in the system. Finally we verify the goodness of the obtained Gaussian approximation by means of discrete event simulation. © 2019, Springer Nature Switzerland AG.

关键词： Discrete event simulation

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