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检索条件"任意字段=3rd International Conference on Applied Mathematics, Modeling and Computer Simulation, AMMCS 2023"

共 90 条记录，以下是41-50 订阅

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High-Performance Batched LU Decomposition on GPU 2

High-Performance Batched LU Decomposition on GPU

引用

2nd international conference on applied mathematics, modeling and computer simulation, ammcs 2022

作者： Lei, Xinli Zhang, Xuesong Ma, Lin Bao, Tie College of Computer Science and Technology Jilin University Jilin Changchun China

ISBN: (纸本)9781643683522

LU decomposition is an important computational step in many engineering and scientific computing problems. In most of critical applications, many small-scale problems need to be solved instead of a few large linear systems. However, when facing with small or medium sized matrices, existing batched LU decomposition algorithms suffer from the global memory access latency bottleneck, and the performance is poor. We implement a series of specialized optimized batched GPU-based LU decomposition algorithms for this situation, and two outperforming algorithms are selected after a systematic testing. They both achieved speedup ratio greater than 3 compared with cuBLAS, and even greater than 10 in some cases. © 2022 The authors and IOS Press.

关键词： Ordinary differential equations

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simulation and modeling of Quadrupole Mass Spectrometer Fringing Fields using SIMION 3

Simulation and Modeling of Quadrupole Mass Spectrometer Frin...

引用

3rd international conference on applied mathematics, Modelling, and Intelligent Computing, CAMMIC 2023

作者： Yang, Qingyuan Huang, Zejian Zhao, Tianqi Jin, Shangzhong School of Optics and Electronic Technology China Jiliang University No.258 Xueyuan District Xiasha Higher Education Park Qiantang District Hangzhou*** China National Institute of Metrology Center for Advanced Measurement Science Technology Innovation Center of Mass Spectrum for State Market Regulation Beijing*** China

ISBN: (数字)9781510667617

ISBN: (纸本)9781510667600

This paper proposes an approach based on numerical simulation to enhance the accuracy and generality of fringe field modeling in Quadrupole Mass Filter (QMF) systems. The proposed method involves SIMION simulation calculations to achieve the desired outcomes. A numerical model of the potential distribution is constructed using the finite numerical difference method in the region where the QMF and end plate are connected. The exponential fringe field function is selected as the basis for approximation, and the fringe field function is obtained through the least squares method. The potential gradient curves for different end plate gaps are derived, revealing the impact of gaps on the fringe field intensity, length, and penetration into the QMF. The proposed method is validated by comparing the obtained fringe field analysis model with literature data The research establishes the reliability and validity of the proposed method for effectively analyzing the fringe fields between the end plate and the QMF electrode in QMF systems. This makes it possible to study the properties of such systems by phase-space dynamics methods. © 2023 SPIE.

关键词： Numerical models

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COMSOL-Based modeling and simulation of ISFET pH Sensor Using Si02Sensing Film 3

COMSOL-Based Modeling and Simulation of ISFET pH Sensor Usin...

引用

3rd international conference on Electrical, computer and Communication Engineering, ECCE 2023

作者： Hossain, Salvir Rahman, Md Tawabur Khulna University of Engineering & Technology Department of Electrical and Electronic Engineering Khulna Bangladesh

ISBN: (纸本)9798350345360

The measurement of pH is an important routine practice in many chemical and biomedical applications. This work reports an Ion Sensitive Field Effect Transistors (ISFET) based pH sensor. The two-dimensional modeling of the sensor is performed in the COMSOL Multiphysics® v. 6.0 platform using its semiconductor module, electrostatics module, and transport of diluted species module. The binding of ions in Si02 results in induced charge carriers in the conducting channel of ISFET, which is controlled by the applied gate voltage for determining ion concentration. Here, the pH of water as the bulk electrolyte is measured by attaining the required gate voltage to achieve a certain drain current in ISFET. The sensor shows excellent sensitivities of 48.7 mV/pH and 41.3 mV/pH with linear detection ranges of pH 1-7 and 8-13, respectively. The excellent sensitivity and wide linear detection range can be attributed to the high concentration of surface sites in the Si02 sensing film and improved disassociation constants in the presence of the gate oxide in contact with the electrolyte. Finally, this sensor demonstrates its potential for real applications. © 2023 IEEE.

关键词： pH sensors

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Research and Development of Reducer Virtual simulation System Based on Mixed Reality (MR) Technology 4

Research and Development of Reducer Virtual Simulation Syste...

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4th international conference on applied mathematics, modeling and computer simulation, ammcs 2024

作者： Liang, Feng Liu, Junying College of Mechanical and Electrical Engineering Heyuan Polytechnic GuangDong HeYuan517000 China

ISBN: (纸本)9781643685519

In order to improve learning pleasure and save teaching costs, this paper uses MR technology to research and develop the virtual simulation system of reducer. Take the primary reducer and the secondary reducer as the development prototype of the simulation system, use 3ds-max software to create and render the model at 1:1 scale, use Photoshop software to edit the reducer map and other effects, select Unity 3D software as the mixed reality development platform, and use C # language programming to realize the animation and interactive functions of the simulation system. The reducer virtual simulation system developed in this paper has five modules and functions: structure introduction, model observation, model sectioning, disassembly and assembly process, and working principle. The application of this system can improve students' learning pleasure and practical ability, and save the teaching cost waste caused by purchasing multiple reducers. © 2024 The Authors.

关键词： Virtual environments

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computer simulation of adapting the object image selection method to video surveillance conditions 3

Computer simulation of adapting the object image selection m...

引用

3rd international Scientific and Practical conference on Mathematical modeling, Programming and applied mathematics, MMPAM 2021

作者： Kornyshev, N.P. Serebrjakov, D.A. Yaroslav-the-Wise Novgorod State University Veliky Novgorod Russia

The article deals with the issues of computer modeling of methods for selecting images of objects against a non-uniform background. A test video sequence with given background and object parameters is considered, which provides imitation of one of the special cases of video surveillance conditions, namely, the convergence of the video surveillance point and the object. The issues of adaptation of the compensation selection method to the specified conditions of video surveillance are discussed. Examples of test images and graphs of dependences of the probability of correct determination of coordinates depending on the value of the local contrast of the object in relation to the background, obtained by computer simulation are given. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Monitoring

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Analysis of a polling system modeling QoS differentiation in WLANs

Analysis of a polling system modeling QoS differentiation in...

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3rd international conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2008

作者： Coenen, T.J.M. Van Den Berg, J.L. Boucherie, Richard J. Department of Applied Mathematics Enschede University of Twente Postbox 217 7500 AE Enschede Netherlands TNO Information and Communication Technology Delft Netherlands Department of Computer Science University of Twente Enschede Netherlands

ISBN: (纸本)9789639799318

This paper investigates a polling system with a random polling scheme, a 1-limited service discipline and deterministic service requirement modeling WLANs with QoS differentation capability. The system contains high and low priority queues that are distinguished via the probability of being served next. We propose a new iteration algorithm to approximate the waiting time of customers in the high and low priority queues. As shown by simulation results, our approximation is accurate for light to moderately loaded networks. © 2008 ICST ISBN.

关键词： Iterative methods

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A new SPICE modeling approach of annular MOSFET in 350 nm commercial CMOS process 3

A new SPICE modeling approach of annular MOSFET in 350 nm co...

引用

3rd international conference on Electronic Information Engineering and computer, EIECT 2023

作者： Cheng, He Yang, Zhijia Zhang, Chao Zhang, Zhipeng Key Laboratory of Networked Control Systems Chinese Academy of Sciences China Shenyang Institute of Automation Chinese Academy of Sciences China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang China

ISBN: (纸本)9798350357707

Annular gate MOSFETs have emerged as potential solutions for radiation-hardened electronics, demonstrating exceptional total ionizing dose tolerance. However, accurate modeling of annular MOSFETs is crucial when designing analog integrated circuits for use in radiation environments, especially when implementing commercial CMOS processes. To enable circuit simulation using tools like SPECTRE/SPICE, foundry-provided PDKs must incorporate a rigorously verified compact model of annular MOSFET behavior. TCAD simulation can then be used to numerically evaluate the current characteristics of the annular MOSFET against the refined compact model constructed from the foundry-provided PDK. In this paper, by aligning the current characteristics of a standard NMOS between TCAD and SPICE simulations, we can verify the material process conditions. Then, based on the material process parameters, the model of the annular gate MOSFET is established using the TCAD simulator. Finally, reasonable agreements are obtained between the TCAD and SPICE simulation results for the IDS-VGS and IDS-VDS characteristics. © 2023 IEEE.

关键词： Foundries

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Research and application based on simulation of ESM model 3

Research and application based on simulation of ESM model

引用

3rd international conference on Advanced Algorithms and Signal Image Processing, AASIP 2023

作者： Wang, Jingyi Fu, Yucheng Zhang, Yang Computer Science Shanghai University Shanghai China Mathematics Shanghai University Shanghai China

ISBN: (纸本)9781510668522

In this paper, simulation is based on the ESM model, which is traditionally characterized by high nonlinearity and high uncertainty. The complexity of the system poses a great challenge for its overall characterization. Modern simulation technology can perform detailed numerical modeling and simulation calculations to realize the analysis and prediction of the system operation state, providing an effective research tool and decision support for the construction of the ESM model optimization system. In this paper, the simulation application of ESM model is based on matrix equation and dynamical system, and the sensitivity analysis is attempted, which proves that the simulation effect of ESM model is good and has good research value and application significance, in order to provide some reference significance for the research in other fields. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Sensitivity analysis

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A parallel computational technique for high frequency HBT circuit simulation

A parallel computational technique for high frequency HBT ci...

引用

2002 international conference on modeling and simulation of Microsystems - MSM 2002

作者： Li, Yiming Huang, Kuen-Yu Chen, Cheng-Kai Lee, C.P. National Nano Device Laboratories Hsinchu 300 Taiwan Microlectron./Info. Syst. Res. Ctr. National Chiao Tung University Hsinchu 300 Taiwan Institue of Electronics National Chiao Tung University Hsinchu 300 Taiwan Department of Computer Science National Chiao Tung University Hsinchu 300 Taiwan P.O. Box 25-178 Hsinchu 300 Taiwan

ISBN: (纸本)0970827571

We present a parallel-in-waveform simulation technique for high frequency heterojunction bipolar transistor (HBT) circuit characterization. On the contrary to the conventional frequency domain analysis, the HBT circuit equations are solved with waveform relaxation and monotone iterative methods in large signal time domain. This approach has been applied to calculate HBT circuit RF output power, the 3rd order inter-modulation and intercept point. The studied unusually high linearity of HBTs' circuit at ultra high frequency region is quite useful for wireless applications.

关键词： Networks (circuits)

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3D Design of Helical Spring for Automotive Independent Suspension System Under Fatigue Test Conditions 3

3D Design of Helical Spring for Automotive Independent Suspe...

引用

3rd international conference on applied mathematics, modeling and computer simulation, ammcs 2023

作者： Ali, Salah H.R. Ahmed, Mostafa Ehab, Eslam Taha, Youssef Samir, Ibrahim Sarwat, Mina 6th of October Giza Egypt 6th of October Giza Egypt Giza Egypt 6th of October Giza Egypt

ISBN: (纸本)9781643684581

A helical spring is a critical part of an independent automobile suspension system. Helical coil-spring is subjected to stress as a result of tire excitation at contact with an uneven road surface. Design of helical spring is very vital in the light of many design parameters in order to improve passenger comfort and car stability on roads. In this paper the most important of parameters have been taken into consideration in the proposed 3D design such as type of spring material, geometrical dimensions and stresses. The proposed design of suspension spring aims to improve the kinetic energy storage capacity, expressed with deformation of the spring when tires are moving on the road surface in order to increase passenger comfort. This has been done to achieve a better safety factor while reducing the weight of a spring made of nanomaterials. In addition, comparisons have been made between the operation accuracy of the two common different FEA packages under fatigue test conditions. The results showed differences due to changing design parameters as well as the types of FEA software packages used. © 2023 The Authors.

关键词： Fatigue load

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