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2017 7th International Conference on Modeling, Simulation, and Applied Optimization (ICMSAO)最新文献

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Integrated economic and environmental two-stage supply chain model under vendor managed consignment inventory partnership 供应商管理寄售库存伙伴关系下的一体化经济与环境两阶段供应链模型
Salbi Babekian, M. Hariga, Zied Bahroun
In this paper, we study the impact of carbon tax regulation on a two-stage supply chain operating under vendor managed consignment inventory (VMCI) partnership. We formulate simple models for the VMCI-type supply chain to determine the vendor's production lot size and the quantity to be shipped to the buyer that minimize the sum of the system-wide operational costs and carbon tax penalty. We present some structural properties for the optimal operating policies and show numerically that significant cost savings and carbon reduction can be achieved by adjusting the production and shipping quantities.
本文研究了碳税监管对供应商管理寄售库存(VMCI)伙伴关系下两阶段供应链的影响。我们为vmci类型的供应链制定了简单的模型,以确定供应商的生产批量大小和要运往买方的数量,从而使整个系统的运营成本和碳税罚款的总和最小化。我们给出了最优操作策略的一些结构特性,并通过数值计算表明,通过调整生产和运输数量可以实现显著的成本节约和碳减排。
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引用次数: 2
Modeling and analysis of a regenerative braking system with a battery-supercapacitor energy storage 电池-超级电容储能再生制动系统建模与分析
A. Adib, R. Dhaouadi
Regenerative braking technology is crucial for electric vehicle applications. Where, the motor is used as a generator to charge the vehicle's battery. However, the regenerated energy is not fully returned to the battery. Some power losses are experienced in between such as losses in the motor's armature and switching losses. The motor drive system described in this paper has an energy storage system comprised of a supercapacitor module and a lithium ion battery connected through a DC/DC converter to a dc motor. This allows efficient, high power transfer under regenerative braking and acceleration. Managing the power flow through the DC/DC converter and therefore the supercapacitor voltage is a key control parameter that affects the efficiency of the overall system.
再生制动技术对电动汽车的应用至关重要。其中,电机用作发电机,为车辆电池充电。然而,再生的能量并不能完全返回到电池中。有些功率损耗在两者之间,如电机电枢的损耗和开关损耗。本文描述的电机驱动系统具有由超级电容器模块和锂离子电池组成的储能系统,该储能系统通过DC/DC变换器连接到直流电机。这允许在再生制动和加速下高效,高功率传输。管理通过DC/DC转换器的功率流,因此超级电容器电压是影响整个系统效率的关键控制参数。
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引用次数: 12
Optimizing the parameters of a biodynamic responses to vibration model using Particle Swarm and Genetic Algorithms 利用粒子群和遗传算法优化生物动力响应振动模型的参数
N. Nawayseh, A. Jarndal, Sadeque Hamdan
Various local optimization techniques such as Interior Point Algorithm have been widely used to optimize the parameters of models representing biodynamic responses to vibration. The quality of the obtained solutions depends on the initial guesses. This paper presents a comparison between the performance of Particle Swarm Optimization and Genetic Algorithm in optimizing the parameters of a human body model, where these techniques do not require initial guesses. The model represents the vertical apparent mass and the fore-and-aft cross-axis apparent mass of the seated human body during vertical excitation. With both optimization methods, the model provided close fits to the moduli and phases for both median data and the responses of 12 individual subjects. However, it was noted that using PSO provided a better solution with less mean error than GA and a faster solution in most of the cases.
各种局部优化技术,如内点算法,已被广泛用于优化生物动力响应模型的参数。得到的解的质量取决于最初的猜测。本文比较了粒子群算法和遗传算法在优化人体模型参数方面的性能,这些技术不需要初始猜测。该模型表示人体在垂直激励下的垂直视质量和前后横轴视质量。通过两种优化方法,该模型对中位数数据和12个个体受试者的反应都提供了接近的模和相位拟合。然而,有人指出,在大多数情况下,使用粒子群算法提供了比遗传算法更好的解决方案,平均误差更小,解决方案更快。
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引用次数: 5
Artificially-Intelligent Imaging (AI2) sensors: How intelligent CMOS imaging devices can benefit Photovoltaics? 人工智能成像(AI2)传感器:智能CMOS成像器件如何使光伏受益?
F. Saffih
In the present paper, we present a new research bridge between two of the current hottest research branches in electrical engineering devices namely; CMOS imaging and Photovoltaics (PV). We start by showing the similarity between core areas of interest in each one namely the device, i.e. the photodiode and the difference between the two research areas. We conclude with an equation that depicts the central contribution of this paper demonstrating that any improvement at the device level made in CMOS imaging technology will inevitably and positively impact PV and visa-versa. Particularly, the suggested intelligent (bio-mimicked) photo-sensors can boost the solar energy conversion of their PV counterparts. This might not be possible in certain cases where fabrication technologies do not allow that and for that matter a non-disruptive change in the fabrication processes are necessary to take advantage of the new devices advancements. Finally, we present a futuristic solution based on the above pivotal idea opening a door for novel applications especially in battery-less biomedicals and wearables.
在本文中,我们提出了一个新的研究桥梁,连接当前电气工程器件中两个最热门的研究分支,即;CMOS成像和光伏(PV)。我们首先展示每个感兴趣的核心领域之间的相似性,即器件,即光电二极管和两个研究领域之间的差异。我们总结了一个方程,该方程描述了本文的核心贡献,证明了CMOS成像技术在器件级别上的任何改进都将不可避免地对PV产生积极影响,反之亦然。特别是,所建议的智能(仿生)光传感器可以促进其光伏对应物的太阳能转换。在制造技术不允许的某些情况下,这可能是不可能的,因此,为了利用新设备的进步,制造过程中的非破坏性变化是必要的。最后,我们提出了基于上述关键思想的未来解决方案,为新应用打开了大门,特别是在无电池生物医学和可穿戴设备方面。
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引用次数: 1
Natural frequency of size-dependent microplates with piezoelectric layers 具有压电层的尺寸相关微板的固有频率
A. Kazemi, R. Vatankhah, M. Farid
The main purpose of the present paper is to study free vibration of nonclassical micro plates with piezoelectric layers. To this end, the plate is modeled according to Kirchhoff's plate theory. Piezoelectric layers are modeled according to linear piezoelectricity theory and due to the small thickness, the electric field is assumed to be constant in these layers. The strain energy of the system is obtained using modified couple stress theory (MCST) and the governing equation of motion is derived using Hamilton's principle. The finite element model is used to solve the obtained equations and effects of piezoelectric layers and material length parameter scale on the natural frequency of the system are studied.
本文的主要目的是研究具有压电层的非经典微板的自由振动。为此,根据基尔霍夫的板块理论对板块进行建模。根据线性压电理论对压电层进行建模,由于压电层的厚度小,假设压电层中的电场是恒定的。利用修正耦合应力理论(MCST)得到了系统的应变能,利用哈密顿原理推导了系统的运动控制方程。利用有限元模型对所得方程进行求解,研究了压电层数和材料长度参数尺度对系统固有频率的影响。
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引用次数: 2
Development of an algorithm for automating gaze data analysis gathered while using upper limb prostheses 开发一种算法,用于在使用上肢假体时自动收集注视数据分析
A. A. Zaid, Mohammad Sobuh, Musa Al Yaman
Studying gaze behavior (where someone looks) is an emerging area of research particularly in the domain of behavioral psychology. Gaze behavior can, for instance, indicate the amount of attention paid in certain tasks and whether the performance is natural or not. Also, it can indicate the level of competence and experience of the user. Therefore, it has the potential to be used as an evaluative tool in upper limb prosthetic field. In order to obtain informative results from gaze data, the visual scene need to be divided into areas of interests (AOIs) and the time of gaze fixation (eye fixation) has to be calculated. This process is usually completed manually by a rater, who goes through the gaze trial frame by frame, to report at which AOI the gaze is fixated at each frame. Therefore, this process is extremely tedious and is highly subjective, and thus prone to unsystematic error. The aim of this paper is to report the development of an automated algorithm which used to analyze gaze data and obtain an initial indication of its validity and reliability.
研究凝视行为(某人看哪里)是一个新兴的研究领域,特别是在行为心理学领域。例如,凝视行为可以表明人们在某些任务中投入了多少注意力,以及这种表现是否自然。此外,它还可以表明用户的能力水平和经验。因此,它有潜力作为上肢假肢领域的评估工具。为了从注视数据中获得信息丰富的结果,需要将视觉场景划分为兴趣区域(aoi),并计算注视注视时间(eye fixation)。这个过程通常由评分员手动完成,他一帧一帧地进行凝视试验,报告每一帧的凝视固定在哪个AOI上。因此,这个过程是非常繁琐和高度主观的,因此容易出现非系统错误。本文的目的是报告一种自动算法的发展,该算法用于分析凝视数据并获得其有效性和可靠性的初步指示。
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引用次数: 0
Modeling received signal strength for indoors utilizing hybrid neuro-fuzzy network 利用混合神经模糊网络对室内接收信号强度进行建模
B. Amer, A. Noureldin
The performance of the systems which based on wireless signals such as localization system relies mostly on the propagation model. Radio signals can be mainly difficult to model because the channel varies significantly with the environment such as indoors. This paper studies two popular propagation models for indoor environments. Practically, these models do not estimate the radio signal fading properly. For that, we proposed a neuro-fuzzy based model as a propagation model which simulates the received signal strength for indoor environments. Compared with the empirical measurements, the proposed model shows higher accuracy in prediction of received signals than other existing channel models.
定位系统等基于无线信号的系统的性能主要依赖于传播模型。无线电信号主要难以建模,因为信道随环境(如室内)变化很大。本文研究了两种流行的室内环境传播模型。实际上,这些模型不能很好地估计无线电信号的衰落。为此,我们提出了一种基于神经模糊的传播模型来模拟室内环境下的接收信号强度。与经验测量结果相比,该模型对接收信号的预测精度高于现有的信道模型。
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引用次数: 4
Modeling and simulation of static power dissipation in CMOS with SELBOX structure SELBOX结构CMOS静态功耗建模与仿真
D. Younis, Narayanan Madathumpadical, H. Al-Nashash
SELective Buried OXide MOSFET (SELBOX) structure reduces the self-heating and kink effect challenges linked with the Silicon on Insulator (SOI) MOSFET. The SELBOX structure also dissipates less static power than the BULK MOSFET while maintaining a high operating speed. In this paper, we present a model that describes the reduction in static power dissipation. SELBOX, SOI and BULK MODFET devices are designed and simulated with Silvaco TCAD tools. Simulation results are also presented and compared with the model results.
选择性埋地氧化MOSFET (SELBOX)结构减少了与绝缘体上硅(SOI) MOSFET相关的自热和扭结效应挑战。SELBOX结构也比BULK MOSFET消耗更少的静态功率,同时保持高工作速度。在本文中,我们提出了一个描述静态功耗降低的模型。利用Silvaco TCAD工具对SELBOX、SOI和BULK MODFET器件进行了设计和仿真。给出了仿真结果,并与模型结果进行了比较。
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引用次数: 2
Dynamic modeling and simulation for virtual evaluation of inverted wheeled robot controllers 倒立轮式机器人控制器虚拟评估的动态建模与仿真
K. Harib, K. Moustafa, Shaima Al Hebsi
This paper develops a mathematical model of an inverted wheeled robot and uses it to simulate and animate the robot dynamics. The robot is modeled as a three-body system consisting of a pendulum and two wheels where the Newtonian mechanics is employed to derive the dynamical equations. The proposed model, in its current configuration, is designed to simulate and animate the controlled robot for forming a virtual controller-testing setup. The open-loop system is simulated by solving the nonlinear dynamic equations recursively within an animation loop by using the Runge-Kutta 4 (RK4) method. The nonlinear model is linearized for designing a PID controller to stabilize the closed-loop system of the robot. The animation process is conducted by creating two graphical objects that resemble the wheel and pendulum in a graphical user interface window. The keyboard arrows are used to interactively input the horizontal motion of the robot cart to the animation process where there is also an option to switch the controller off. Simulation results are provided for both the open-loop and closed-loop cases to illustrate the effectiveness of the results.
本文建立了倒轮式机器人的数学模型,并用该模型对机器人进行了动力学仿真和动画化。将机器人建模为由一个摆和两个轮组成的三体系统,并利用牛顿力学推导其动力学方程。所提出的模型,在其当前配置中,旨在模拟和动画控制机器人,以形成虚拟控制器测试设置。利用Runge-Kutta 4 (RK4)方法在动画循环内递归求解非线性动力学方程,对开环系统进行了仿真。对非线性模型进行线性化,设计PID控制器,实现机器人闭环系统的稳定。动画过程是通过在图形用户界面窗口中创建两个类似于轮子和钟摆的图形对象来进行的。键盘箭头用于交互式地将机器人小车的水平运动输入到动画过程中,其中也有一个关闭控制器的选项。给出了开环和闭环两种情况下的仿真结果,以说明结果的有效性。
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引用次数: 3
Impact of diverse seismic hazard estimates on design and performance of Steel Plate Shear Walls buildings in Dubai, UAE 不同地震危险性评估对阿联酋迪拜钢板剪力墙建筑设计和性能的影响
M. AlHamaydeh, Laith Elayyan
The Steel Plate Shear Walls (SPSW) system is one of many Lateral Force Resisting Systems (LFRS) added to the design codes over recent years. It comprises an array of steel plates or walls (referred to as the Web) that are welded into a steel beams and columns frame (Horizontal and Vertical Boundary Elements, HBE and VBE). When subjected to lateral forces, these web plates buckle diagonally and develop a tension field along the opposite diagonal. Under substantial earthquake loads, these plates are allowed to yield along the tension diagonal which provides the necessary energy dissipation during seismic activity. The city of Dubai, UAE has become an international and regional business hub featuring hundreds of tall building structures. The degree of seismic risk that Dubai faces is yet to be agreed upon amongst researchers and structural engineering practitioners. This paper presents the design and analysis of a standard 20-story steel structure employing SPSW to be built in Dubai, UAE subjected to three varying levels of seismic activity reported by researchers. The structural performance of the varying designs is quantified via nonlinear monotonic pushover analyses in the OpenSees platform.
钢板剪力墙(SPSW)系统是近年来加入设计规范的许多抗侧力系统(LFRS)之一。它由一系列钢板或墙壁(称为腹板)组成,这些钢板或墙壁被焊接成钢梁和钢柱框架(水平和垂直边界元素,HBE和VBE)。当受到侧向力时,这些腹板对角线弯曲并沿着相反的对角线形成张力场。在巨大的地震荷载下,这些板被允许沿着张力对角线屈服,这在地震活动期间提供了必要的能量耗散。阿联酋的迪拜市已经成为国际和地区的商业中心,拥有数百座高层建筑。迪拜面临的地震风险程度尚未在研究人员和结构工程从业者之间达成一致。本文介绍了将在阿联酋迪拜建造的采用SPSW的标准20层钢结构在研究人员报告的三种不同级别地震活动下的设计和分析。不同设计的结构性能通过OpenSees平台的非线性单调推覆分析进行量化。
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引用次数: 3
期刊
2017 7th International Conference on Modeling, Simulation, and Applied Optimization (ICMSAO)
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