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Classification of Brain Neuroimaging for Alzheimer's Disease Employing Principal Component Analysis 利用主成分分析对阿尔茨海默病的脑神经影像进行分类
Pub Date : 2024-01-01 DOI: 10.21608/mjeer.2023.232914.1079
Fatma elzahraa shehata, Mostafa Makkey, Shimaa A. Abdelrahman
— Alzheimer's disease (AD) is one illness that significantly impacts people’s lives. As AD worsens over time, it causes the death of brain cells. To assist a neurologist, a proposed classification method for AD progression is introduced in this paper. Pre-processing is applied to clean up artifacts from brain images. As biomarkers for AD diagnosis, three specific areas of the brain are utilized. Multiplicative intrinsic component optimization with an exemplar pyramid is employed for the three main biomarkers segmentation at a multi-scale. For feature extraction, the gray-level co-occurrence matrix is utilized. Finally, principal component analysis is incorporated for feature reduction, and based on the Euclidean distance the decision of the binary classifier is performed. The Alzheimer's Disease Neuroimaging Initiative baseline dataset is used with 311 subjects, 262 for training and 49 for testing. The proposed method achieved an accuracy of 96.296% for the classification between late mild cognitive impairment (LMCI) and cognitive normal (CN), 85.71% between early mild cognitive impairment (EMCI) and CN, 92% between AD and CN, 95.833% between EMCI and LMCI, 91.3% between AD and EMCI, and 84.21% between AD and LMCI. Evaluation results show that the proposed method enhanced the existing method's accuracy with less feature dimensionality.
- 阿尔茨海默病(AD)是一种严重影响人们生活的疾病。随着时间的推移,阿尔茨海默病逐渐恶化,导致脑细胞死亡。为了帮助神经科医生,本文介绍了一种针对阿兹海默症进展的分类方法。预处理用于清除大脑图像中的伪影。本文利用大脑的三个特定区域作为诊断渐冻症的生物标志物。在多尺度下对三个主要生物标志物进行分割时,采用了带有范例金字塔的乘法本征分量优化技术。在特征提取方面,采用了灰度共现矩阵。最后,采用主成分分析法进行特征还原,并根据欧氏距离对二元分类器进行判定。阿尔茨海默病神经影像计划基线数据集有 311 个受试者,其中 262 个用于训练,49 个用于测试。所提出的方法在晚期轻度认知障碍(LMCI)和认知正常(CN)之间的分类准确率达到 96.296%,在早期轻度认知障碍(EMCI)和认知正常之间的分类准确率达到 85.71%,在 AD 和 CN 之间的分类准确率达到 92%,在 EMCI 和 LMCI 之间的分类准确率达到 95.833%,在 AD 和 EMCI 之间的分类准确率达到 91.3%,在 AD 和 LMCI 之间的分类准确率达到 84.21%。评估结果表明,所提出的方法提高了现有方法的准确性,而且特征维数更少。
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引用次数: 0
DICOM Medical Image Security with DNA- Non-Uniform Cellular Automata and JSMP Map Based Encryption Technique 基于 DNA- 非统一细胞自动机和 JSMP 地图的 DICOM 医学影像安全加密技术
Pub Date : 2024-01-01 DOI: 10.21608/mjeer.2023.246301.1085
Ahmed Mohamed, Walid El-Shafa, Mona Shokair
: With the global proliferation of the Internet and digitalization transforming how information is shared, there has been exponential growth in the transmission of multimedia content fueled by advancing communication technologies. In recent times, Digital Imaging and Communications in Medicine (DICOM) medical imaging has become critical for disease diagnosis. Given that these images are often transmitted across networks, ensuring their robust protection has become imperative. Unauthorized access or misuse of the data within these images could potentially result in serious consequences. Various approaches exist for safeguarding such images, with encryption emerging as a highly effective method. Encryption algorithms typically involve two key phases: confusion and diffusion. This paper suggested proposed encryption technique designed specifically for encrypting both gray-scale and color DICOM medical images. Several assessment criteria, including the Number of Changing Pixel Rate (NPCR), Unified Averaged Changed Intensity (UACI), average entropy, correlation coefficients, Structural Similarity (SSIM), Feature Similarity (FSIM), and Peak Signal-to-Noise Ratio (PSNR), are employed to evaluate the suggested cryptosystem. These evaluations vividly underscore the robust security performance exhibited by the proposed approach.
:随着互联网在全球的普及和数字化改变了信息的共享方式,在先进通信技术的推动下,多媒体内容的传输呈指数级增长。近来,医学数字成像和通信(DICOM)医学成像已成为疾病诊断的关键。鉴于这些图像经常通过网络传输,确保对其进行有力的保护已成为当务之急。未经授权访问或滥用这些图像中的数据可能会导致严重后果。保护这些图像的方法多种多样,其中加密是一种非常有效的方法。加密算法通常涉及两个关键阶段:混淆和扩散。本文提出的加密技术专为加密灰度和彩色 DICOM 医学图像而设计。本文采用了多个评估标准,包括变化像素率(NPCR)、统一平均变化强度(UACI)、平均熵、相关系数、结构相似性(SSIM)、特征相似性(FSIM)和峰值信噪比(PSNR),来评估所建议的加密系统。这些评估结果生动地证明了所建议的方法具有强大的安全性能。
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引用次数: 0
Photonic Crystal Fiber Sensors, Literature Review, Challenges, and Some Novel Trends 光子晶体光纤传感器,文献回顾,挑战和一些新趋势
Pub Date : 2023-07-01 DOI: 10.21608/mjeer.2023.203343.1076
naira salah, El-Sayed M. El-Rabie, Ashraf Khalaf
— This paper introduces an introduction to photonic crystals (PCs) and photonic crystal fiber (PCF) sensors along with their different applications. A comparative study of different types of PCF sensors including chemical, biomedical, and liquid sensors is presented. Many distinct factors, including the device structure, background material, operating wavelength, PCF's guiding mechanisms and the sample refractive indices to be detected, affect how PCF sensors behave. Different topologies such as hexagonal, hollow rectangle, decagonal, rectangular porous core, and mono rectangular are discussed. Sensing properties, and measurement methodologies for each of these sensors are discussed. Based on this comparative study, PCF sensors are categorized according to their properties, topologies, measurement techniques, and applications. The appropriate topology for the required application can be selected based on the required properties. The same PCF topology can be used for different sensing purposes. A comparative study of different types of PCF sensors in a form of table is presented followed by the challenges and some novel trends on Photonic Crystal Fiber. _______________________________________________________
本文介绍了光子晶体(PCs)和光子晶体光纤(PCF)传感器及其不同的应用。比较研究了不同类型的PCF传感器,包括化学、生物医学和液体传感器。许多不同的因素,包括器件结构、背景材料、工作波长、PCF的引导机制和待测样品的折射率,都会影响PCF传感器的性能。讨论了不同的拓扑结构,如六角形、空心矩形、十角形、矩形多孔芯和单矩形。每个传感器的传感特性和测量方法进行了讨论。在此基础上,根据PCF传感器的特性、拓扑结构、测量技术和应用进行了分类。可以根据所需的属性为所需的应用程序选择适当的拓扑。相同的PCF拓扑可用于不同的传感目的。对不同类型的光子晶体光纤传感器进行了比较研究,并提出了光子晶体光纤面临的挑战和一些新的发展趋势。_______________________________________________________
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引用次数: 0
Vibration Control of Horizontally Supported Jeffcott-Rotor System Utilizing PIRC-controller 基于pirc控制器的水平支承jeffcott -转子系统振动控制
Pub Date : 2023-05-25 DOI: 10.21608/mjeer.2023.201037.1075
N. Saeed, O. Omara, M. Abd Elkader
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引用次数: 1
Cascading ensemble machine learning algorithms for maize yield level prediction 玉米产量水平预测的级联集成机器学习算法
Pub Date : 2023-05-25 DOI: 10.21608/mjeer.2023.159995.1066
Hayam R. Seireg, Yasser M. K. Omar, F. El-Sayed, A. El-Fishawy, A. Elmahalawy
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引用次数: 0
Efficient Utilization of Image Fusion and Interpolation for Medical Image Diagnosis applications 图像融合与插值在医学图像诊断中的高效应用
Pub Date : 2023-01-01 DOI: 10.21608/mjeer.2023.283902
Randa Ali, Taha E. Taha, Noha A. El-Hag, Moawad I.Dessoky, Walid El- Shafai, Fathi E. Abd El- samie
— This paper presents a framework for medical image diagnosis of brain tumors. This framework comprises image fusion, image interpolation and image segmentation. The objective of the fusion process is to integerate information from MR and CT images in a single image for better representation of tumors. The fusion is implemented with one of the Dual tree complex wavelet transform (DT-CWT), Discrete wavelet transform (DWT) and principal component analysis (PCA) algorithms to investigate the best one for the application of interest. Interpolation is implemented with one of both polynomial and inverse interpolation techniques. Inverse techniques including linear minimum mean square error (LMMSE) and regularized interpolation are preferred to polynomial technique. After that, threshold segmentation is implemented to isolate the tumor region. Different evolution metrics are used such as accuracy, sensitivity , precision , specifity ,…….. are used to assess the proposed framework. Simulation results prove that the frameworking depending on DWT fusion gives the best results over the existing published techniques
本文提出了一种脑肿瘤的医学影像诊断框架。该框架包括图像融合、图像插值和图像分割。融合过程的目的是将来自MR和CT图像的信息整合到一张图像中,以便更好地表示肿瘤。利用对偶树复小波变换(DT-CWT)、离散小波变换(DWT)和主成分分析(PCA)算法中的一种进行融合,找出最适合应用的算法。插值是用多项式插值和逆插值技术中的一种来实现的。包括线性最小均方误差(LMMSE)和正则化插值在内的逆技术优于多项式技术。然后进行阈值分割,隔离肿瘤区域。使用不同的进化指标,如准确性,灵敏度,精度,特异性,........用于评估建议的框架。仿真结果表明,基于DWT融合的框架比现有的技术具有更好的效果
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引用次数: 0
A Multi Compartmental model for Targeted Drug Delivery Based on Internet of Biological NanoThings 基于生物纳米物联网的靶向给药多室模型
Pub Date : 2023-01-01 DOI: 10.21608/mjeer.2023.283913
Islam R.Kamal, Saied M. Abd El-atty, S. F. El-Zoghdy, Randa F. Soliman
—The authors propose a multi-compartmental model based on molecular communication (MC) technology for drug delivery to the malignant cell without affecting healthy cells in the patient's body. The medical personnel can transfer/control the required drug to the targeted cell with the help of a group of bio-nanomachines connected to the Internet of biological Nano Things (IoBNT) and a bio-cyber interface in both the forward and reverse directions. The proposed model consists of a set of multi-differential equations that are used to identify molecular communication among bio-nanomachines and quantify drug concentration to the targeted cell. Unlike conventional compartmental models, the proposed model can deliver the desired drug to the targeted cell by accounting for extracellular and intracellular tumor compartments, resulting in fewer therapeutic doses with improved efficacy. Simulations were also carried out to evaluate the performance of proposed multi-compartmental model with changing the physical parameters.
作者提出了一种基于分子通信(MC)技术的多室模型,用于在不影响患者体内健康细胞的情况下将药物递送到恶性细胞。医务人员可以通过连接生物纳米物联网(IoBNT)和生物网络接口的一组生物纳米机器,在正向和反向的方向上,将所需药物转移/控制到目标细胞。该模型由一组多微分方程组成,用于识别生物纳米机器之间的分子通信,并量化靶向细胞的药物浓度。与传统的区室模型不同,该模型可以通过考虑细胞外和细胞内肿瘤区室,将所需药物输送到靶细胞,从而减少治疗剂量,提高疗效。通过数值模拟,对改变物理参数的多隔室模型进行了性能评价。
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引用次数: 0
Effects of Solar Irradiance and Temperature on Photovoltaic Module Characteristics using a capacitive load method 太阳辐照度和温度对电容负载法光伏组件特性的影响
Pub Date : 2023-01-01 DOI: 10.21608/mjeer.2023.283915
Eman sayed ward, Nasr Gad, M. Lotfy Rabeh, A. Yahia
— The electrical performance of photovoltaic (PV) cells or arrays is greatly influenced by the ambient temperature and the solar radiation intensity (irradiation) as well. The effect of temperature and solar irradiance on the main characteristics of solar panels and photovoltaic modules is investigated in this paper. The primary parameters are identified and extracted using the capacitive load approach. These parameters are Short Circuit Current (I sc ), Maximum Power Point Current (I mpp ), Open Circuit Voltage (V oc ), Maximum Power Point Voltage (V mpp ), Maximum Power Point (P max ), Fill factor (FF) and Efficiency (η). The PV cell used in this study is poly-crystal silicon. Its commercial name is Kyocera solar KC130GT. MATLAB Simulink is used to assess the capacitive load method in the investigation of I-V and P-V curves. These two curves are derived based on the effects of varying temperatures (30, 35, 40, and 45 o C) at a constant irradiance (1000 W/m 2 ) on the PV cell performance and the effect of varying irradiance (250, 500, 750, and 1000 W/m 2 ) at constant temperature (25 o C) as well. It is concluded that by increasing the irradiance at constant temperature, I sc and V oc are increasing. As a result, η increases from 13.9% at 250 W/m 2 to reach 14.7% at 1000 W/m 2 . In the case of increasing temperature at constant irradiance, η decreases from 13.5% at 30 o C to reach 12.8% at 45 o C. This is due to the large drop in V oc compared to the small increment in I sc .
-光伏(PV)电池或阵列的电性能受环境温度和太阳辐射强度(辐照)的影响很大。本文研究了温度和太阳辐照度对太阳能电池板和光伏组件主要特性的影响。主要参数的识别和提取采用电容负载的方法。这些参数是短路电流(1sc)、最大功率点电流(1mpp)、开路电压(voc)、最大功率点电压(vmpp)、最大功率点电压(pmax)、填充系数(FF)和效率(η)。本研究中使用的光伏电池是多晶硅。其商业名称为京瓷太阳能KC130GT。利用MATLAB Simulink对电容性负载法进行了I-V和P-V曲线的研究。这两条曲线是基于恒定辐照度(1000 W/ m2)下不同温度(30、35、40和45℃)对PV电池性能的影响以及恒定温度(25℃)下不同辐照度(250、500、750和1000 W/ m2)对PV电池性能的影响得出的。结果表明,在恒定温度下,随着辐照度的增加,isc和voc也随之增加。结果表明,η值从250 W/ m2时的13.9%增加到1000 W/ m2时的14.7%。在恒定辐照度下,随着温度的升高,η值从30℃时的13.5%下降到45℃时的12.8%,这是由于V℃的大幅度下降而I℃的小幅增加所致。
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引用次数: 0
Terahertz Reflectarray Antenna with a Square Patch Surrounded by Two Concentric Square Rings as a Unit Cell 由两个同心圆环包围的正方形贴片作为单元单元的太赫兹反射天线
Pub Date : 2023-01-01 DOI: 10.21608/mjeer.2023.283911
Ahmed A. Hassan, El-Sayed M. El-Rabie, R. Elsharkawy, Demyana A. Saleeb, Ahmed S. Elkorany
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引用次数: 0
Classification of Users' Opinions and Posts on Facebook Using Machine Learning Approaches 使用机器学习方法对Facebook上的用户意见和帖子进行分类
Pub Date : 2022-07-05 DOI: 10.21608/mjeer.2022.79630.1037
Ibrahim sayed, M. Nour, Mohammed Badawy, E. Abed
— In this research work, four classifiers are adopted, analyzed, and discussed. The classifiers are Naïve Bayes (NB), Support Vector Machine (SVM), Stochastic Gradient Descent (SGD), and Logistic Regression (LR). The classifiers are operated on a dataset with more than eight-thousands of instances. The dataset contains the users' reviews and their opinions about the quality of service of restaurants. The reviews are collected from the Arabic Facebook posts. Several experiments are done to evaluate the performance of the adopted classifiers. Moreover, some features selection methods are also applied to improve the classification process. The feature selected methods are based on term-weights with N-grams, correlation, chi-square, and mutual information. Some criteria are considered to evaluate the performance of the classification process mainly: precision, recall, F-measure, and learning time. From the experimental results, the SVM classifier outperforms the other adopted ones. Also, the feature selection method based on the correlation between the individual features and the target class outperforms the other chosen methods. The same concluding remarks are expected to take place for other datasets containing comments or reviews from social media.
-在本研究工作中,采用、分析和讨论了四种分类器。分类器有Naïve贝叶斯(NB)、支持向量机(SVM)、随机梯度下降(SGD)和逻辑回归(LR)。分类器在具有超过8000个实例的数据集上操作。该数据集包含用户的评论和他们对餐馆服务质量的意见。这些评论是从阿拉伯语的Facebook帖子中收集的。通过几个实验来评估所采用的分类器的性能。此外,还应用了一些特征选择方法来改进分类过程。特征选择方法基于N-grams、相关性、卡方和互信息的项权。评估分类过程性能的标准主要有:准确率、召回率、f值和学习时间。从实验结果来看,支持向量机分类器的性能优于其他采用的分类器。此外,基于单个特征与目标类之间的相关性的特征选择方法优于其他选择的方法。对于包含来自社交媒体的评论或评论的其他数据集,预计也将进行相同的结束语。
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引用次数: 0
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Menoufia Journal of Electronic Engineering Research
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