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2021 3rd Novel Intelligent and Leading Emerging Sciences Conference (NILES)最新文献

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Reduced Active Element Power-Law Proportional-Integral Controller Designs 简化有源单元幂律比例积分控制器设计
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600508
S. Kapoulea, C. Psychalinos, A. Elwakil
Topologies of power-law proportional-integral controllers, which offer minimization of the active component count are presented in this work. This is achieved thanks to the utilization of RC networks, which approximate driving-point impedances described by power-law functions. Additional important features of the presented schemes are their capability of achieving minimization of the spread of passive elements, as well as of implementing values of order greater than one.
在这项工作中提出了幂律比例积分控制器的拓扑结构,它提供了最小的有效分量计数。这要归功于RC网络的利用,它近似幂律函数描述的驱动点阻抗。所提出的方案的其他重要特征是它们能够实现无源元件传播的最小化,以及实现大于1的阶值。
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引用次数: 4
Brain Tumor Segmentation using 3D U-Net with Hyperparameter Optimization 基于超参数优化的三维U-Net脑肿瘤分割
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600556
A. Gamal, Khaled Bedda, Nada Ashraf, Salma Ayman, M. Abdallah, M. Rushdi
For the sake of proper diagnosis and treatment, accurate brain tumour segmentation is required. Because manual brain tumour segmentation is a time-consuming, costly, and subjective task, effective automated approaches for this purpose are generally desired. However, because brain tumours vary greatly in terms of location, shape, and size, establishing automatic segmentation algorithms has remained challenging throughout the years. Automatic segmentation of brain tumour is the process of separating abnormal tissues from normal tissues, such as white matter (WM), gray matter (GM), and cerebrospinal fluid (CSF). Brian segmentation needs typically to be carried out for different image modalities in order to reveal important metabolic and physiological information. These modalities include positron emission tomography (PET), computer tomography (CT) image and magnetic resonance image (MRI). Multimodal imaging techniques (such as PET/CT and PET/MRI) that combine the information from multiple imaging modalities contribute more for accurate brain tumour segmentation. In this work, we introduce a deep learning framework for automated segmentation of 3D brain tumors that can save physicians time and provide an accurate reproducible solution for further tumor analysis and monitoring. In particular, a 3D U-Net was trained on brain MRI data obtained from the 2018 Brain tumor Image Segmentation (BraTS) challenge. Three optimizers (RMSProp, Adam and Nadam) and three loss functions (Dice loss, focal Tversky loss, Log-Cosh loss functions) were used. We demonstrated that some loss functions and optimizers combinations perform better than other ones. For example, using the Log-Cosh loss function along with RMSProp optimizer resulted in the highest Dice coefficient, 0.75. Indeed, we also optimized the network hyperparameters in order to enhance the segmentation outcomes. These results demonstrate the feasibility and effectiveness of the proposed deep learning scheme with optimized hyperparemeters and appropriate selection of the optimizer and loss function.
为了正确的诊断和治疗,需要准确的脑肿瘤分割。由于手动脑肿瘤分割是一项耗时、昂贵且主观的任务,因此通常需要有效的自动化方法来实现这一目的。然而,由于脑肿瘤在位置、形状和大小方面差异很大,因此建立自动分割算法多年来一直具有挑战性。脑肿瘤自动分割是将异常组织从正常组织中分离出来的过程,如白质(WM)、灰质(GM)、脑脊液(CSF)等。为了揭示重要的代谢和生理信息,通常需要对不同的图像模式进行脑分割。这些模式包括正电子发射断层扫描(PET),计算机断层扫描(CT)图像和磁共振成像(MRI)。多模式成像技术(如PET/CT和PET/MRI)结合了多种成像模式的信息,有助于更准确地分割脑肿瘤。在这项工作中,我们引入了一个用于3D脑肿瘤自动分割的深度学习框架,可以节省医生的时间,并为进一步的肿瘤分析和监测提供准确的可复制解决方案。特别是,3D U-Net在2018年脑肿瘤图像分割(BraTS)挑战中获得的脑MRI数据上进行了训练。使用了3种优化器(RMSProp、Adam和Nadam)和3种损失函数(Dice损失、focal Tversky损失、Log-Cosh损失函数)。我们证明了一些损失函数和优化器组合比其他损失函数和优化器组合表现更好。例如,使用Log-Cosh损失函数和RMSProp优化器会产生最高的Dice系数0.75。实际上,我们还优化了网络超参数,以增强分割结果。这些结果证明了所提出的超参数优化深度学习方案的可行性和有效性,以及优化器和损失函数的适当选择。
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引用次数: 2
Real-Time Fish Detection Approach on Self-Built Dataset Based on YOLOv3 基于YOLOv3的自建数据集实时鱼类检测方法
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600512
Ali Amin, Salmeen Bahnasy, K. Elghamry, A. Samir, A. Emad, M. Darweesh, A. El-Sherif
Creating a model to detect freely moving fish underwater in real-time is a challenging process for two main reasons. First, the available datasets suffer from some limitations that severely affect the results of the detection models operating in challenging and blurry environments. These models should be able to capture all of the fish movement given different types of surroundings. Second, choosing the convenient detection model system which matches the desired requirements from having high accuracy with satisfying frames per second (FPS). To overcome the first challenge, a new dataset was created by extracting 1800 frames from videos and manually annotating them to overcome the different background issues and the complex movements and orientations of the fish. Regarding the second challenge and after comparing between different object detection systems, YOLOv3 was chosen as it proved to achieve high accuracy among other systems. The proposed approach scored 76.81% using (mean average precision) mAP as an accuracy metric and 89.17% using F-score, which is considered one of the most accurate outcomes among the literature. Moreover, the model rate is 12 FPS which is satisfying for real-time.
创建一个模型来实时检测水下自由移动的鱼类是一个具有挑战性的过程,主要有两个原因。首先,可用的数据集受到一些限制,严重影响了在具有挑战性和模糊的环境中运行的检测模型的结果。这些模型应该能够捕捉到所有的鱼在不同环境下的运动。其次,从具有较高的精度和令人满意的帧数/秒(FPS)两方面选择符合期望要求的便捷检测模型系统。为了克服第一个挑战,通过从视频中提取1800帧并手动注释它们来创建一个新的数据集,以克服不同的背景问题以及鱼的复杂运动和方向。对于第二个挑战,经过对不同目标检测系统的比较,我们选择了YOLOv3,因为它在其他系统中具有较高的精度。该方法以mAP(平均精度)作为准确度度量,得分为76.81%,以F-score作为准确度度量,得分为89.17%,被认为是文献中准确率最高的结果之一。此外,模型速率为12 FPS,满足实时性要求。
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引用次数: 2
Chaos-Based RNG using Semiconductor Lasers with Parameters Variation Tolerance 基于参数公差变化半导体激光器的混沌RNG
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600513
Sara Ahmed, Nancy Alshaer, T. Ismail
Random numbers play an essential role in guaranteeing secrecy in most cryptographic systems. A chaotic optical signal is exploited to achieve high-speed random numbers. It could be generated by using one or more semiconductor lasers with external optical feedback. However, this system faces two major issues, high peak to average power ratio (PAPR) and parameter variations. These issues highly affected the randomness of the generated bitstreams. In this paper, we use a non-linear compression technique to compand the generated signal before it is quantized to avoid the effects of the PAPR. Also, we develop the post-processing stage by using advanced encryption standard (AES) algorithm feeds from two different generated bitstreams. These two integrated stages, non-linear quantization, and post-processing are configured to achieve a generation of a efficient random number guaranteed by NIST and DIEHARD statistical test suites. Finally, the proposed system is verified at parameter variation of ±20% tolerance including external mirror reflectivity, external cavity length, and normalized injection current. The results show that the proposed system could generate truly random numbers even with parameters configuration tolerance.
在大多数密码系统中,随机数在保证保密性方面起着至关重要的作用。利用混沌光信号实现高速随机数。它可以通过使用一个或多个具有外部光反馈的半导体激光器来产生。然而,该系统面临两个主要问题:峰值平均功率比(PAPR)过高和参数变化。这些问题严重影响了生成的比特流的随机性。在本文中,我们使用非线性压缩技术对产生的信号在量化之前进行对比,以避免PAPR的影响。此外,我们通过使用来自两个不同生成的比特流的高级加密标准(AES)算法来开发后处理阶段。非线性量化和后处理这两个集成的阶段被配置为实现NIST和DIEHARD统计测试套件保证的高效随机数的生成。最后,在±20%的公差范围内对系统进行了验证,包括外镜反射率、外腔长度和归一化注入电流。结果表明,该系统在参数配置允许的情况下也能生成真正的随机数。
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引用次数: 1
ESLDL: An Integrated Deep Learning Model for Egyptian Sign Language Recognition ESLDL:埃及手语识别的集成深度学习模型
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600492
Soha Ahmed Ehssan Aly, Aya Hassanin, Saddam Bekhet
Sign languages is a critical requirement that helps deaf people to express their needs, feelings and emotions using a variety of hand gestures throughout their daily life. This language had evolved in parallel with spoken languages, however, it do not resemble its counterparts in the same way. Moreover, it is as complex as any other spoken language, as each sign language embodies hundreds of signs, that differs from the next by slight changes in hand shape, position, motion direction, face and body parts contributing to each sign. Unfortunately, sign languages are not globally standardized, where the language differs between countries and has its own vocabulary and varies although they might look similar. Furthermore, publicly available datasets are limited in quality and most of the available translation services are expensive, due to the required skilled human personnel. This paper proposes a deep learning approach for sign language detection that is finely tailored for the Egyptian sign language (special case of the generic sign language). The model is built to harnesses the power of convolutional and recurrent networks by integrating them together to better recognize the sign language spatio-temporal data-feed. In addition, the paper proposes the first Egyptian sign language dataset for emotion words and pronouns. The experimental results demonstrated the proposed approach promising results on the introduced dataset using combined CNN with RNN models.
手语是帮助聋哑人在日常生活中使用各种手势表达他们的需求、感受和情感的一项关键要求。这种语言是与口语并行发展的,然而,它并不以同样的方式与口语相似。此外,手语和其他口语一样复杂,因为每种手语都包含数百个手势,而每个手势的手部形状、位置、运动方向、面部和身体部位的细微变化都与下一个手势不同。不幸的是,手语并不是全球标准化的,各国之间的语言不同,有自己的词汇,尽管看起来很相似,但也有所不同。此外,公开可用的数据集质量有限,而且由于需要熟练的人力,大多数可用的翻译服务都很昂贵。本文提出了一种用于手语检测的深度学习方法,该方法为埃及手语(通用手语的特殊情况)量身定制。该模型的建立是为了利用卷积和循环网络的力量,通过将它们集成在一起来更好地识别手语的时空数据馈送。此外,本文还提出了第一个埃及手语情感词和代词数据集。实验结果表明,该方法将CNN与RNN模型相结合,在引入的数据集上取得了良好的效果。
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引用次数: 0
Active Morphing Control of Airfoil At Low Reynolds Number Using Level-Set Method 基于水平集法的低雷诺数翼型主动变形控制
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600518
Yusuf T. Elbadry, A. Guaily, M. Boraey, M. Abdelrahman
The active control of flow around an airfoil through morphing is numerically investigated. The lock-in phenomenon was predicted while using a fixed grid. Galerkin/Least-Squares Finite Element Method was used to simulate incompressible flow over an airfoil with leading edge morphing at a Reynolds number, $Re = 5000$, and angle of attack, $alpha = 6^{circ}$. The numerical simulation was carried out using the in-house FORTRAN code. The code was validated with the literature by simulating the flow over an oscillating cylinder. The paperwork implemented a locally oscillating surface on the airfoil with a deformation function. The non-dimensional oscillation frequency was varied in the range of [0.4 - 2.7] and the flow frequencies were analyzed. The primary and secondary frequencies were recorded at each simulation and the lock-in region is specified. The streamlines and vorticity contours are presented at two different excitation frequencies, specifically, $f_{e} = 1.0$ and $f_{e} = 2.5$. The streamlines and vorticity contours showed the formation of the vortices in both cases. The results show great accuracy for the Level-Set Method compared with the literature work that used the Arbitrary Lagrangian-Eulerian method, and the flow frequencies can be predicted accurately.
采用数值方法研究了翼型变形对绕流的主动控制。锁定现象是在使用固定网格时预测的。采用伽辽金/最小二乘有限元法模拟了雷诺数为$Re = 5000$、迎角为$alpha = 6^{circ}$时前缘变形机翼的不可压缩流动。数值模拟是使用内部的FORTRAN代码进行的。通过模拟振荡圆柱上的流动,与文献进行了验证。文书工作实现了局部振荡表面上的翼型与变形功能。无量纲振荡频率在[0.4 ~ 2.7]范围内变化,并对流动频率进行了分析。在每次模拟中记录主频率和次频率,并指定锁定区域。分别为$f_{e} = 1.0$和$f_{e} = 2.5$两种激励频率下的流线和涡度曲线。流线和涡度线显示了两种情况下涡的形成。结果表明,与文献中使用任意拉格朗日-欧拉方法相比,水平集方法具有较高的精度,可以准确地预测流频。
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引用次数: 2
LTE Uplink Interference Inspection Using Convolutional Neural Networks 基于卷积神经网络的LTE上行干扰检测
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600524
Amr Medhat, M. Elattar, O. Fahmy
Interference management is one of the challenging tasks in Long-Term Evolution (LTE) technologies in Telecom Networks. One of these tasks is classifying interference problems affecting Uplink (UL) channel into different types. The interference classification problem can be formulated as an image classification task by converting the signal's power spectral density to an image. Convolutional Neural Networks (CNN) proved to have great success in image classification tasks. In this paper, different CNN architectures such as (VGG, MobileNet, RESNET) are used and assessed to classify the type of interference affecting the uplink channel in LTE. CNNs are characterized by their ability to detect and describe the abnormal behavior of UL channel which provided significant improvement over traditional rule-based systems. These rule-based systems rely on extracting domain driven features and classifying the interference using manually created rules by an expert. Our study shows that CNN yields 95% accuracy with training data. The end-to-end solution was deployed in Vodafone Group on Google Cloud Platform (GCP) to serve the different Local Markets.
干扰管理是电信网络长期演进(LTE)技术中具有挑战性的课题之一。其中一项任务是将影响上行链路(UL)信道的干扰问题分类为不同类型。干扰分类问题可以通过将信号的功率谱密度转换为图像来表述为图像分类任务。卷积神经网络(CNN)被证明在图像分类任务中取得了巨大的成功。本文使用并评估了不同的CNN架构,如(VGG, MobileNet, RESNET),以对影响LTE上行信道的干扰类型进行分类。cnn的特点是能够检测和描述UL通道的异常行为,这比传统的基于规则的系统有了很大的改进。这些基于规则的系统依赖于提取领域驱动的特征,并使用专家手动创建的规则对干扰进行分类。我们的研究表明,CNN在训练数据上的准确率达到95%。沃达丰集团在谷歌云平台(GCP)上部署了端到端解决方案,以服务于不同的本地市场。
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引用次数: 0
Visual Data Acquisition for Measuring Devices using Deep Learning 使用深度学习的测量设备可视化数据采集
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600549
Youssef Abdelrahman, M. El-Salamony, Mohamed Khalifa
Most of the measurement devices in the university labs are not computerized. Hence, unsteady measurements are difficult to capture. In order to retrieve the measured data to computers, expensive data acquisition systems are needed to link these devices to computers. To overcome this issue a cost-efficient solution is proposed. This article proposes a methodology to convert the readings of LCDs of the various measuring devices into a digital form using computer vision. The procedure is successfully implemented and the results are presented.
大学实验室里的大多数测量设备都不是电脑化的。因此,非定常测量是难以捕捉的。为了将测量数据检索到计算机,需要昂贵的数据采集系统将这些设备与计算机连接起来。为了克服这一问题,提出了一种经济有效的解决方案。本文提出了一种利用计算机视觉将各种测量设备的lcd读数转换为数字形式的方法。该程序已成功实现,并给出了结果。
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引用次数: 0
Instance Segmentation of 2D Label-Free Microscopic Images using Deep Learning 基于深度学习的二维无标签显微图像实例分割
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600522
B. A. Mohamed, Lamees N. Mahmoud, W. Al-Atabany, N. Salem
The precise detection and segmentation of cells in microscopic image sequences is an essential task in biomedical research, such as drug discovery and studying the development of tissues, organs, or entire organisms. However, the detection and segmentation of cells in phase contrast images with a halo and shade-off effects is still challenging. Lately, Mask Regional Convolutional Neural Network (Mask R-CNN) has been introduced for object detection and instance segmentation of natural images. This study investigates the efficacy of the Mask R-CNN to instantly detect and segment label-free microscopic images. The dataset used in this paper is taken from the ISBI cell tracking challenge. The Mask R-CNN is trained using different hyperparameters and compared to the U-Net model. Experimental results show that the Mask R-CNN model achieves 91.6 % when using ResNet-50 backbone and COCO weights.
显微图像序列中细胞的精确检测和分割是生物医学研究中的一项重要任务,例如药物发现和研究组织、器官或整个生物体的发育。然而,具有晕晕和阴影效果的相衬图像中细胞的检测和分割仍然是一个挑战。近年来,Mask区域卷积神经网络(Mask R-CNN)被引入到自然图像的目标检测和实例分割中。本研究探讨了Mask R-CNN在即时检测和分割无标签显微图像方面的功效。本文使用的数据集来自ISBI单元跟踪挑战。Mask R-CNN使用不同的超参数进行训练,并与U-Net模型进行比较。实验结果表明,当使用ResNet-50主干网和COCO权值时,Mask R-CNN模型的识别率达到91.6%。
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引用次数: 0
A Comparative Simulation Study of DG-MOSFETs: PCMS Approach in FETMOSS vs. CMS in Silvaco TCAD dsg - mosfet: PCMS方法在FETMOSS和CMS在Silvaco TCAD中的比较仿真研究
Pub Date : 2021-10-23 DOI: 10.1109/NILES53778.2021.9600534
M. Salem, M. Elbanna, M. Abouelatta, Ahmed Saeed, A. Shaker
The simulation of quantum transport in DG-MOSFETs could be effectively accomplished by the Partial-Coupled Mode Space (PCMS) approach, which is realized by separating the odd and even modes solutions. This technique combines the merits of Coupled Mode Space (CMS) regarding the accuracy and Uncoupled Mode Space (UMS) as far as reducing computational time is concerned. In this work, a comparison study between PCMS using our developed FETMOSS simulator and CMS using Silvaco TCAD is carried out. The simulation is performed on a set of short-channel DG-MOSFETs. The accuracy at room temperature is found to be less than 8% along the whole range of the supply voltage. Based on this study, the PCMS approach in FETMOSS simulator is validated and proved to trace device performance in reasonable times compared to the TCAD high computational times.
采用分离奇偶模解的部分耦合模式空间(PCMS)方法可以有效地模拟dg - mosfet中的量子输运。该技术结合了耦合模式空间(CMS)在精度方面和非耦合模式空间(UMS)在减少计算时间方面的优点。在这项工作中,我们对使用我们开发的FETMOSS模拟器的PCMS和使用Silvaco TCAD的CMS进行了比较研究。仿真是在一组短通道dg - mosfet上进行的。在整个电源电压范围内,室温下的精度小于8%。基于本研究,在FETMOSS模拟器中验证了PCMS方法,并证明了与TCAD的高计算时间相比,PCMS方法可以在合理的时间内跟踪器件性能。
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引用次数: 0
期刊
2021 3rd Novel Intelligent and Leading Emerging Sciences Conference (NILES)
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