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2011 Fourth International Conference on Modeling, Simulation and Applied Optimization最新文献

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Impact and Scope of Electric Power Generation Demand Using Renewable Energy Resources Due to COVID-19 新冠肺炎疫情对可再生能源发电需求的影响和范围
Pub Date : 2021-03-18 DOI: 10.1007/978-981-15-9829-6_39
Manish Kumar, Muralidhar Nayak Bhukya, Anshuman, Sachin
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引用次数: 1
Introductory Lectures on Convex Optimization - A Basic Course 凸优化导论-基础课程
Y. Nesterov
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引用次数: 5660
Flood wave dynamics using Lagrangian block advection 基于拉格朗日块体平流的洪水波浪动力学
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775567
L. Tan, V. Chu
Flood wave dynamics simulations are determined by a robust and accurate Lagrangian block advection (LBA) scheme that can track the dry-and-wet interface and capture the shocks without using any slope limiter to control the numerical oscillations. Two series of challenging numerical problems are considered using the LBA. First, computations are carried out for water waves in a parabolic bowl. The wetting-and-drying interface on the surface of the bowl is tracked by the LBA method with absolute computational stability. The accuracy of the LBA method is verified by the convergent of the numerical solution to an exact solution. Finally, the LBA method is applied to carry out a series of flood wave simulations, which have closely reproduced the data obtained from the laboratory experiments.
洪波动力学模拟采用鲁棒且精确的拉格朗日块平流(LBA)方案,该方案可以跟踪干湿界面并捕获冲击,而无需使用任何坡度限制器来控制数值振荡。利用LBA考虑了两组具有挑战性的数值问题。首先,对抛物面碗中的水波进行了计算。采用LBA方法对碗表面的干湿界面进行跟踪,具有绝对的计算稳定性。通过数值解收敛到精确解,验证了LBA方法的准确性。最后,应用LBA方法进行了一系列的洪波模拟,模拟结果与室内实验数据吻合较好。
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引用次数: 0
Mapping of hydrocarbon with marine EM method using 2-D forward modeling 基于二维正演模拟的海洋电磁法油气成图
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775594
Nazabat Hussain, M. N. Karsiti, N. Yahya, Z. Burhanuddin
This paper present two-dimensional forward modeling of marine controlled-source electromagnetic data for the purpose of hydrocarbon mapping. The forward algorithm employs a staggered-grid finite difference solution to the total-electric field Helmholtz equation. Solution are achieved through a) an optimal grid technique that extends the boundaries of the mesh outward from the region of interest using a minimal number of nodes, and b) a direct matrix solution technique that allows for the simultaneous solution for all sources. The forward modeling provides qualitative understanding of electromagnetic signals behavior as it propagates through hydrocarbon and conductive saline fluids bearing layers at depth.
本文提出了以油气成图为目的的海洋可控源电磁数据二维正演建模方法。正演算法采用交错网格有限差分法求解全电场亥姆霍兹方程。解决方案是通过a)最优网格技术实现的,该技术使用最少数量的节点将网格的边界从感兴趣的区域向外扩展,b)直接矩阵解决技术允许同时解决所有源。正演模拟提供了电磁信号在油气和导电含盐流体层中传播时的定性理解。
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引用次数: 0
Coordination of PID based power system stabilizer and AVR using combination bacterial foraging techique — Particle swarm optimization 基于细菌觅食-粒子群联合优化的电力系统PID稳定器与AVR协调
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775527
I. Manuaba, M. Abdillah, A. Soeprijanto, H. Mauridhi
The damping of oscillation in power system commonly use known controller such as power system stabilizer (PSS). Proportional integral derivative (PID) controller tuning based on power system stabilizer and AVR is presented in this paper. The parameters of PID controller such as proportional gain, integral factor, differential coefficient and gain AVR are selected and optimized by BF-PSOTVAC. The proposed method is applied to PID controller tuning and is compared to another method. The integral time absolut error standards of optimization design as objective function. The results of simulations show that the proposed method has the capability to damn optimally and suppresses error to minimum
电力系统振荡的阻尼通常采用已知的控制器,如电力系统稳定器(PSS)。提出了一种基于电力系统稳定器和AVR的比例积分导数(PID)控制器整定方法。采用BF-PSOTVAC对比例增益、积分因子、微分系数、增益AVR等PID控制器参数进行了选择和优化。将该方法应用于PID控制器的整定,并与另一种方法进行了比较。将优化设计的积分时间绝对误差标准作为目标函数。仿真结果表明,该方法具有最优的性能和最小的误差抑制能力
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引用次数: 11
On the performance of space-time cooperative relay in fading channel 衰落信道下空时协同中继性能研究
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775629
A. Izzati, N. Fisal, S. Yusof, M. Abbas
Cooperative relay has been an interesting research area for the past years as it promotes higher data rates and robust to wireless environment. IEEE Work Group initiated the use of relay stations in the IEEE 802.16e standard and it is called IEEE 802.16j. This paper proposed a multi-hop cooperative relay system with space-time codes (STC), with the integration of relay selection. In changing environment, data transmission signals through wireless channels can be degraded by factors like shadowing, fading etc. Cooperative relay system is believed to offer robustness by multipath routes to destination. The cooperative relay system in this work adopted the virtual MIMO (multiple input multiple output) concept. Analysis of performances are made between topologies of space-time cooperative relay systems and compared with cooperative relay transmission.
协作中继技术由于具有较高的数据传输速率和对无线环境的鲁棒性,近年来一直是一个有趣的研究领域。IEEE工作组在IEEE 802.16e标准中开始使用中继站,它被称为IEEE 802.16j。提出了一种集成中继选择的空时码多跳协同中继系统。在变化的环境中,通过无线信道传输的数据信号会受到阴影、衰落等因素的影响。协作中继系统通过多路径路由提供鲁棒性。本文的协同中继系统采用了虚拟多输入多输出的概念。对时空协同中继系统的拓扑进行了性能分析,并与协同中继传输进行了比较。
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引用次数: 0
RAGHC: Reliable authenticated group head communication for wireless mesh networks RAGHC:无线网状网络的可靠认证组头通信
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775492
L. Zafar, Fazl-e-Hadi, F. B. Muhaya, A. Naseer
Wireless mesh networks are the hybrid networks having infrastructure based gateways on one hand and on the other hand having mobile or fixed clients. Group communication is an important paradigm to study for its variety of applications such as video conferencing, broadcasting, online games, distance learning. Security is a critical issue in group communication. Mostly, group communication relies on its head for communication, so securing the group head is vital. In this paper, we present reliable authenticated group head communication (RAGHC) architecture. This architecture is organized into three parts i.e., group head authentication, secure inter group communication via group heads and group head maintenance. Demonstrating the inter group communication is an additional contribution of this study. By extensive simulation we demonstrate that how group heads are created authenticated and how they communicate within the group and outside the group securely. Comparative results with previous techniques show that RAGHC is better in terms of packet delivery ratio and packet delay.
无线网状网络是一种混合网络,一方面具有基于网关的基础设施,另一方面具有移动或固定客户端。群通信在视频会议、广播、网络游戏、远程学习等领域有着广泛的应用,是一个重要的研究范式。安全性是群通信中的一个关键问题。大多数情况下,群体通信依赖于其头部进行通信,因此确保群体头部至关重要。本文提出了可靠的认证组头通信(RAGHC)体系结构。该体系结构分为三个部分,即组头认证、通过组头保护组间通信和组头维护。展示团队间的沟通是本研究的另一个贡献。通过广泛的模拟,我们演示了如何创建组头并进行身份验证,以及它们如何在组内和组外安全地进行通信。结果表明,RAGHC在分组传输率和分组延迟方面都优于以往的算法。
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引用次数: 1
Building a multilevel modeling network for lipid processing systems 构建脂质处理系统的多级建模网络
Pub Date : 2011-04-19 DOI: 10.1109/icmsao.2011.5775488
A. Mustaffa, Carlos A. Diaz-Tovar, A. Hukkerikar, A. Quaglia, G. Sin, G. Kontogeorgis, B. Sarup, R. Gani
The aim of this work is to present the development of a computer aided multilevel modeling network for the systematic design and analysis of processes employing lipid technologies. This is achieved by decomposing the problem into four levels of modeling: i) pure component property modeling and a lipid-database of collected experimental data from industry and generated data from validated predictive property models, as well as modeling tools for fast adoption-analysis of property prediction models; ii) modeling of phase behavior of relevant lipid mixtures using the UNIFAC-CI model, development of a master parameter table and calculations of the activity coefficients (VLE) related to a multicomponent system; iii) development of a model library consisting of new and adopted process models of unit operations involved in lipid processing technologies, validation of the developed models using operating data collected from existing process plants, and application of validated models in design and analysis of unit operations; iv) the information and models developed are used as building blocks in the development of methods and tools for computer-aided synthesis and design of process flowsheets (CAFD). The applicability of this methodology is highlighted in each level of modeling through the analysis of a lipid process that has significant relevance in the edible oil and biodiesel industries since it determines the quality of the final oil product, the physical refining process of oils and fats.
这项工作的目的是提出一个计算机辅助多级建模网络的发展,用于系统设计和分析采用脂质技术的过程。这是通过将问题分解为四个层次的建模来实现的:i)纯组件属性建模和从工业中收集的实验数据和从经过验证的预测属性模型生成的数据的脂质数据库,以及用于快速采用属性预测模型分析的建模工具;ii)使用unifacc - ci模型对相关脂质混合物的相行为进行建模,开发主参数表并计算与多组分系统相关的活度系数(VLE);Iii)开发一个模型库,包括涉及油脂处理技术的单元操作的新的和采用的过程模型,使用从现有工艺工厂收集的操作数据验证开发的模型,并将验证模型应用于单元操作的设计和分析;iv)所开发的信息和模型用作开发计算机辅助合成和工艺流程图设计(CAFD)的方法和工具的基本模块。通过对油脂过程的分析,这种方法的适用性在建模的每个层次上都得到了强调。油脂过程在食用油和生物柴油行业中具有重要的相关性,因为它决定了最终油产品的质量,即油脂的物理精炼过程。
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引用次数: 3
Musculoskeletal computational analysis of the influence of car-seat design/adjustment on fatigue-induced driving 汽车座椅设计/调整对疲劳驾驶影响的肌肉骨骼计算分析
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775600
Noor Aliah binti Abdul Majid, M. Notomi, J. Rasmussen
Main causes for fatigue and discomfort experienced by vehicle drivers during city driving were investigated computationally using a musculoskeletal modeling simulation method. Key adjustments of car seat (i.e., the seat-pan and back-rest inclination) together with various values of accelerator pedal's spring stiffness were analyzed in the present work. A public-domain rigid-body model of a seat together with the detailed full-body musculoskeletal model was used to study biomechanics of seated drivers. Interactions between the drivers and vehicle in various combinations of seat-pan/back-rest inclinations and pedal spring stiffness were analyzed using an inverse dynamics approach. To deal with the muscle redundancy problem, (i.e. the problem with the human-body containing more muscle than necessary to drive its degrees of freedom) the “minimum-fatigue” criterion [1] was utilized. The results show that seat-pan/back-rest inclinations and pedal spring stiffness have complex influences on the muscle activation and spinal joint forces of the human body. From the result, it may be suggested that a slight backward inclination of the seat-pan (approx. −20deg) and back-rest (approx. −20deg) may reduce the muscle fatigue of a driver. In addition, adding a spring (stiffness around 20Nm/rad) to the accelerator pedal does help in minimizing the muscle activity and spinal joint forces.
采用肌肉骨骼建模仿真方法,对城市车辆驾驶员疲劳不适的主要原因进行了计算研究。本文分析了汽车座椅的关键调整(即坐垫和靠背倾角)以及油门踏板弹簧刚度的不同取值。采用公共域座椅刚体模型和详细的全身肌肉骨骼模型对座椅驾驶员的生物力学进行了研究。采用逆动力学方法,分析了驾驶员与车辆在坐垫/靠背倾角和踏板弹簧刚度的不同组合下的相互作用。为了处理肌肉冗余问题(即人体包含的肌肉超过驱动其自由度所需的问题),使用了“最小疲劳”准则[1]。结果表明,坐垫/靠背倾角和踏板弹簧刚度对人体肌肉活动和脊柱关节力有复杂的影响。从结果来看,可以认为座椅盘的轻微向后倾斜(约为。- 20度)和靠背(约20度)。−20度)可减轻驾驶员的肌肉疲劳。此外,在加速踏板上增加一个弹簧(刚度约为20Nm/rad)确实有助于减少肌肉活动和脊柱关节力。
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引用次数: 13
Local/global frame switching in sensor-based outdoor navigation in a wheeled mobile robot 基于传感器的轮式移动机器人室外导航中的局部/全局帧切换
Pub Date : 2011-04-19 DOI: 10.1109/ICMSAO.2011.5775552
Yu Yu Lwin, Daisuke Takahashi, Y. Yamamoto
This paper presents a local/global frames switching in outdoor navigation of a four-wheeled mobile robot in an obstructed environment. Two laser range finders are equipped on the mobile robot in order to perform sensor-based obstacle avoidance without any a priori knowledge about its environment. Also, a GPS is mounted on the top of the robot so that the absolute location and the heading angle of the robot are known. The potential field method is utilized to create force fields around obstacles and a goal. Look-ahead control is adopted to steer the mobile robot in which a reference point located in front of the robot is dynamically changed such that the mobile robot is able to successfully maneuver among the obstacles and reach the goal. The proposed algorithm enables the mobile robot to follow the precise trajectory during navigation task under obstructed outdoor environment, despite its significant odometry errors.
研究了四轮移动机器人在障碍物环境下室外导航的局部/全局帧切换问题。在移动机器人上安装了两个激光测距仪,以便在没有任何先验环境知识的情况下进行基于传感器的避障。此外,在机器人的顶部安装了GPS,以便知道机器人的绝对位置和航向角。利用势场法在障碍物和目标周围产生力场。采用前瞻控制对移动机器人进行控制,动态改变机器人前方的参考点,使移动机器人能够在障碍物之间顺利机动并到达目标。该算法使移动机器人在室外障碍物环境下的导航任务中能够遵循精确的轨迹,尽管其里程误差较大。
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引用次数: 2
期刊
2011 Fourth International Conference on Modeling, Simulation and Applied Optimization
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