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2019 International Conference on Innovative Trends in Computer Engineering (ITCE)最新文献

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Modeling the Automatic Voltage Regulator (AVR) Using Artificial Neural Network 基于人工神经网络的自动电压调节器(AVR)建模
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646450
Salem Alkhalaf
The artificial neural network (ANN) has been successfully applied to many systems’ models with the objective of improving their performance. This study presents the ANN application to the automated voltage regulator (AVR) model of the synchronous machine. The studied system consists of the single-machine infinite bus (SMIB) power system. Data was extracted over a diverse range of conditions. Different fault types were also considered for collecting a large number of data to avoid overfitting. The multilayer feedforward neural network (MLFFNN) approach was applied to design the paradigm and system equations were solved using the MATLAB Simulink software.
为了提高系统的性能,人工神经网络(ANN)已经成功地应用于许多系统的模型中。研究了人工神经网络在同步电机自动调压器(AVR)模型中的应用。所研究的系统由单机无限母线(SMIB)供电系统组成。数据是在不同条件下提取的。为了避免过拟合,还考虑了不同的故障类型来收集大量数据。采用多层前馈神经网络(MLFFNN)方法对模型进行设计,并用MATLAB Simulink软件对系统方程进行求解。
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引用次数: 4
Design of 6 GHz High Efficiency Long Range Wireless Power Transfer System Using Offset Reflectors fed by Conical Horns 利用锥形喇叭馈送偏置反射器的6ghz高效远程无线电力传输系统设计
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646558
Mahmoud Abdelhafeez, K. Yousef, Mohamed Abdelraheem, E. Khaled
This paper presents a proposed design procedure of a Wireless Power Transfer (WPT) system based on high efficiency offset reflector antennas fed by conical horns. The system’s performance evaluation is also demonstrated. The antennas in the transmitter and receiver sides of the proposed WPT system are symmetric. The performance of the system is optimized by calibrating the feeding horns and the offset reflector’s dimensions to minimize the path and reflection losses of the proposed WPT system. The results show that correct line of sight alignment of the transmitter and receiver enhances the efficiency of the system. With an operating frequency of 6 GHz and 1 W of power transfer over a distance of 12 m between the transmitter and receiver, the system attains a total transfer efficiency of 62.9 %.
提出了一种基于锥形喇叭馈电的高效偏置反射天线的无线电力传输系统的设计方法。最后对系统进行了性能评价。该WPT系统的发射端和接收端天线是对称的。通过校准馈电角和偏置反射器的尺寸来优化系统的性能,以最大限度地减少所提出的WPT系统的路径和反射损失。结果表明,正确的发射和接收瞄准线对准可以提高系统的效率。该系统工作频率为6 GHz,传输功率为1 W,传输距离为12 m,总传输效率为62.9%。
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引用次数: 1
Design and Analysis of Multi-Phase Buck DC-DC Converters for Li-Fi Attocell Drivers Li-Fi电池驱动器用多相降压DC-DC变换器的设计与分析
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646687
Anwaar M. Damerdash, M. Aly, E. Ahmed
Light fidelity (Li-Fi) is a visible light communications (VLC) system that employs the light emitting diodes (LED) lamps for wireless communications. The Li-Fi atto-cell driver systems use the lighting system fixtures to achieve two function; namely the illumination and communication functions. The Li-Fi systems are advantageous at using LEDs to transmit high speed communication signals without compromising their illumination at a good efficiency. The DC-DC converters represent the main core and the suitable choice of Li-Fi atto-cell drivers. The main challenges of Li-Fi atto-cell driver system is the implementation of complex communication modulation signals, such as quadrature amplitude modulation (QAM), in addition to the driver efficiency deteriorations due to the communication signal. In addition, achieving high bit rate is essential requirement for communication systems that make design of dc-dc converter is of a challenging task. This paper presents a comparative case study of single phase and multiphase buck DC-DC converters for driving Li-Fi systems. The comparison includes the converter design, the efficiency, and the maximum achievable bit rates of each topology.
光保真(Li-Fi)是一种使用发光二极管(LED)灯进行无线通信的可见光通信(VLC)系统。Li-Fi atto-cell驱动系统利用照明系统灯具实现两种功能;即照明和通讯功能。Li-Fi系统的优势在于使用led来传输高速通信信号,而不会以良好的效率影响其照明。DC-DC转换器代表了主要核心和Li-Fi atto-cell驱动器的合适选择。Li-Fi atto-cell驱动系统面临的主要挑战是实现复杂的通信调制信号,如正交调幅(QAM),以及由于通信信号而导致的驱动效率下降。此外,实现高比特率是通信系统的基本要求,使得dc-dc变换器的设计成为一项具有挑战性的任务。本文介绍了驱动Li-Fi系统的单相和多相降压DC-DC变换器的比较案例研究。比较包括转换器的设计、效率和每种拓扑的最大可实现比特率。
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引用次数: 4
Crowd Modeling Based Auto Activated Barriers for Management of Pilgrims in Mataf 基于人群建模的马塔塔朝觐者自动激活障碍管理
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646529
Samir A. Elsagheer Mohamed, M. T. Parvez
Tens of millions of people visit every year the Grand Mosque in Makkah for Hajj and Umrah. Making Tawaf (circumambulating the Ka’ba) is an essential rite in Hajj and Umrah. During peak hours, crowd density in Mataf (the area around the Ka’ba) becomes extremely intense. Even when the crowd density in Mataf is less, kissing the Black Stone (a part of the ritual of making the Tawaf) is a daunting task. This is due to the lack of proper queueing of pilgrims wishing to touch and kiss the Black Stone. In this work, we propose a Finite State Machine (FSM) based model for simulating the crowd movement during Tawaf. The model can be implemented in real time crowd monitoring in Mataf. Based on the models outputs, a system for auto-activated barriers is proposed to arrange the pilgrims in queue who want to touch and kiss the Black Stone.
每年有数千万人前往麦加的大清真寺进行朝觐和朝圣。Tawaf(绕天坛)是朝觐和朝觐必不可少的仪式。在高峰时段,Mataf(克尔巴周围地区)的人群密度变得极其密集。即使在人群密度较低的马塔夫,亲吻黑石(制作塔瓦夫仪式的一部分)也是一项艰巨的任务。这是由于希望触摸和亲吻黑石的朝圣者缺乏适当的排队。在这项工作中,我们提出了一个基于有限状态机(FSM)的模型来模拟Tawaf期间的人群运动。该模型可以在Mataf的人群实时监控中实现。基于模型的输出,提出了一种自动激活障碍系统,用于安排想要触摸和亲吻黑石的朝圣者排队。
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引用次数: 7
Performance Evaluation of Medium Access Control Protocols for Cognitive Radio Ad Hoc Networks 认知无线电自组织网络介质访问控制协议的性能评价
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646677
Shimaa Abdzaher, M. Abdrabou, A. Al-Shami, I. Saroit
Cognitive radio is a smart technology which can enhance the wireless communications by using the opportunistic access of the spectrum. Cognitive Radio Ad Hoc Network is a promising wireless network which depends on this technology. In this paper, we evaluate the performance evaluation of two different medium Access control protocols scenarios; single radio-multi channels Cognitive medium Access Control Protocol and two radios-multi channels cognitive medium access control protocol using Network Simulator 2 (NS-2). This study investigates the impact of increasing the packet size on the performance metrics such as network throughput. Simulation results proves that single radio-multi channels cognitive medium access control protocol outperforms the two radios-multi channels cognitive medium access control protocol in all aspects of performance metrics with increasing the packet size.
认知无线电是一种利用频谱的机会接入来增强无线通信的智能技术。认知无线自组织网络是一种很有发展前途的无线网络。在本文中,我们评估了两种不同的介质访问控制协议场景的性能评估;使用网络模拟器2 (NS-2)的单无线电多通道认知媒体访问控制协议和双无线电多通道认知媒体访问控制协议。本研究调查了增加数据包大小对网络吞吐量等性能指标的影响。仿真结果表明,随着分组大小的增加,单信道认知媒体访问控制协议在各方面的性能指标都优于双信道认知媒体访问控制协议。
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引用次数: 5
Performance Assessment of a Realistic Egyptian Distribution Network Including PV Penetration with DSTATCOM 基于DSTATCOM的埃及现实配电网光伏渗透性能评估
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646473
Ashraf Ramadan, Mohamed Ebeed, S. Kamel
This paper presents the influences of integrating Distributed Static Compensators (DSTATCOMs) and Photo voltaic (PV) units in the real distribution network (Tala City) at Menoufia_Egypt. The investigation is carried out with and without DSTATCOMs at different penetration levels of PV which include 60%, 70%, 80%, and 90%. The optimal ratings and locations of the DSTATCOMs and the PV units were determined using the improved sine cosine algorism (ISCA). The ISCA is based on Levy flight distribution with adaptive operators to enhance the searching performance of the original SCA. The considered objective function includes the power losses minimization, voltage deviations minimization and voltage stability improvement. The obtained results can be concluded that inclusion of PV units can reduce the power losses and improve both of the voltage profile and stability of the system considerably with increasing the penetration levels. In addition, the performance of the studied system is significantly improved when it is connecting with both PV penetration and DSTATCOM compared with the case of PV penetration only. Moreover, the obtained results verified the effectiveness of the proposed optimization technique for assigning the allocations of the DSTATCOMs and PV units in terms of the objective function.
本文介绍了在埃及menoufia_tala市实际配电网中集成分布式静态补偿器(DSTATCOMs)和光伏(PV)机组的影响。在PV的不同渗透水平(60%、70%、80%和90%)下,使用和不使用dstatcom进行了调查。采用改进的正弦余弦算法(ISCA)确定dstatcom和PV单元的最佳额定值和位置。ISCA是基于Levy飞行分布和自适应算子,以提高原有SCA的搜索性能。考虑的目标函数包括功率损耗最小化、电压偏差最小化和电压稳定性改善。所得结果表明,随着渗透水平的增加,光伏发电机组的加入可以显著降低功率损耗,改善系统的电压分布和稳定性。此外,所研究的系统在与PV穿透和DSTATCOM同时连接时,其性能比仅与PV穿透情况相比有显著提高。此外,所得结果验证了所提出的优化技术在目标函数上分配dstatcom和PV单元分配的有效性。
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引用次数: 10
A QoS-based Power Optimization for D2D underlaying Macro-Small Cellular Networks with Imperfect Channel Estimation 基于qos的不完全信道估计的D2D宏小蜂窝网络功耗优化
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646320
E. Maher, A. El-Mahdy
The Device-to-Device (D2D) communication underlaying cellular networks generates interference due to reusing the same resources of the conventional cellular network. Therefore, efficient interference management techniques are required to control the interference. In this paper, we address the problem of interference management for underlay D2D users in a two-tier heterogeneous macro-small cell network assuming imperfect Channel State Information (CSI). The optimal power of D2D users that maximize the Signal to Interference and Noise (SINR) ratio is obtained in presence of imperfect CSI. The effect of channel estimation error on the performance of both D2D and cellular users is measured in terms of the achievable rate and the cumulative distribution function (CDF) of the SINR.
基于蜂窝网络的设备到设备(D2D)通信由于重用传统蜂窝网络的相同资源而产生干扰。因此,需要有效的干扰管理技术来控制干扰。在本文中,我们解决了两层异构宏小蜂窝网络中底层D2D用户的干扰管理问题,假设信道状态信息(CSI)不完善。在不完全CSI存在的情况下,得到了最大信噪比的D2D用户的最优功率。信道估计误差对D2D和蜂窝用户性能的影响是根据可达到的速率和SINR的累积分布函数(CDF)来测量的。
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引用次数: 1
Investigating Relationship Between Lateral Time-To-Peak (TTP) Displacement Curves and Stiffness of Viscoelastic Agar-Gelatin Phantoms 研究粘弹性琼脂-明胶模型横向峰值时间(TTP)位移曲线与刚度的关系
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646388
H. M. Ahmed, N. Salem, A. Seddik, M. El-Adawy
Shear wave speed is a metric for the tissue elastic properties and its pathologic changes. This is due to the implicit relationship between the speed of the propagating shear wave within tissue and both its elastic properties and pathologic changes. Wave propagation is a result of a force applied transiently to the tissue model. In this paper, the relationship between lateral TTP displacement curves and stiffness of different Young’s moduli phantoms is investigated. Five different elastic moduli Finite Element Models (FEMs) are used; 5.2KPa, 9.8KPa, 23.9KPa, 44.2KPa and 67.3KPa. Agar-gelatin model is used as a general model for mimicking soft tissue. Displacements are tracked with respect to the simulation time to create the displacement magnitude profile for the central node for each phantom. Results have shown that the second highest peak happens after 0.05 seconds in case of low elastic moduli FEMs. This time stamp can be used as a yardstick to differentiate between low and high elastic moduli without considering estimating the shear wave speed for many lateral nodes.
横波速度是衡量组织弹性特性及其病理变化的指标。这是由于组织内传播剪切波的速度与其弹性特性和病理变化之间的隐含关系。波的传播是在组织模型上施加瞬时力的结果。本文研究了不同杨氏模体的侧向TTP位移曲线与刚度之间的关系。采用了五种不同的弹性模量有限元模型;5.2KPa、9.8KPa、23.9KPa、44.2KPa、67.3KPa。琼脂-明胶模型被用作模拟软组织的通用模型。根据模拟时间跟踪位移,为每个幻像的中心节点创建位移大小剖面。结果表明,低弹性模量有限元模型的第二峰值出现在0.05 s之后。该时间戳可以用作区分高、低弹性模量的尺度,而无需考虑估计许多侧节点的横波速度。
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引用次数: 1
Performance of RF underwater communications operating at 433 MHz and 2.4 GHz 433 MHz和2.4 GHz频率下的水下射频通信性能
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646491
Salma M. Maher, Ziad M. Ali, H. Mahmoud, S. Abdellatif, M. Abdellatif
The development of Underwater communications networks has become a hot topic in the research over the past few years. Many technologies are promising, however, they suffer from considerable latency, and larger attenuation with distance which degrades the overall network performance. This paper implements a low cost underwater communication network (UWCN) in order to investigate the effect of the operating frequency on the network performance during data transmission. The transmission of data is studied in three scenarios; Air-to-Air, Air-to-Water, and Water-to-Water scenarios. Furthermore, the performance of the network with two operating frequencies is examined in terms of the end-to-end delay, throughput, and packet loss.
水下通信网络的发展已成为近年来研究的热点。许多技术都很有前途,然而,它们都有相当大的延迟,并且随着距离的增加衰减更大,从而降低了整体网络性能。为了研究工作频率对数据传输过程中网络性能的影响,本文实现了一种低成本水下通信网络。研究了三种场景下的数据传输;空对空、空对水和水对水的场景。此外,从端到端延迟、吞吐量和数据包丢失的角度考察了具有两个工作频率的网络的性能。
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引用次数: 22
Improving the Performance of the Snort Intrusion Detection Using Clonal Selection 利用克隆选择改进Snort入侵检测性能
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646601
Hussein M. Elshafie, Tarek M. Mahmoud, Abdelmgeid A. Ali
Network intrusion detection system (NIDS) monitors network traffic to detect an unauthorized activity in computer networks. The NIDS is classified according to detection technique into signature and anomaly based. Each of them has its own advantage and disadvantage. The signature-based is more effective in detecting known attacks but it is unable to detect new attacks. The anomaly-based is better in detecting new attacks but it may produce many false alarms. NIDS which use both of them try to exploit the strengths of them. In this paper we propose an improvement of the well known Snort NIDS using clonal selection algorithm (CSA). The proposed approach is evaluated using the 1999 DARPA Intrusion Detection Evaluation Data Sets of MIT (Massachusetts Institute of Technology) as a testbed. The conducted experiments compare the recall, precision, and F-score of Snort NIDS on its own, Snort NIDS improved by negative selection algorithm (NSA), and the proposed approach. The obtained results show that the proposed approach is more powerful than the others.
网络入侵检测系统(NIDS)通过监控网络流量来检测计算机网络中未经授权的活动。根据检测技术的不同,将网络入侵检测分为基于特征和基于异常两类。每一种都有自己的优点和缺点。基于签名的检测方法在检测已知攻击时更有效,但在检测新的攻击时却无能为力。基于异常的检测方法在检测新攻击方面效果较好,但可能产生较多的误报。同时使用两者的NIDS试图利用它们的优势。本文提出了一种基于克隆选择算法(CSA)的Snort NIDS改进方案。采用1999年美国麻省理工学院的DARPA入侵检测评估数据集作为测试平台,对该方法进行了评估。所进行的实验比较了Snort NIDS本身、负面选择算法(NSA)改进的Snort NIDS和所提出的方法的查全率、查全率和f分数。结果表明,该方法比其他方法更有效。
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引用次数: 7
期刊
2019 International Conference on Innovative Trends in Computer Engineering (ITCE)
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