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Deep Learning-Based Iris Segmentation Algorithm for Effective Iris Recognition System 基于深度学习的有效虹膜识别系统虹膜分割算法
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.10002
Sruthi Kunkuma Balasubramanian, Vijayakumar Jeganathan, Thavamani Subramani
In this study, a 19-layer convolutional neural network model is developed for accurate iris segmentation and is trained and validated using five publicly available iris image datasets. An integrodifferential operator is used to create labeled images for CASIA v1.0, CASIA v2.0, and PolyU Iris image datasets. The performance of the proposed model is evaluated based on accuracy, sensitivity, selectivity, precision, and F-score. The accuracy obtained for CASIA v1.0, CASIA v2.0, CASIA Iris Interval, IITD, and PolyU Iris are 0.82, 0.97, 0.9923, 0.9942, and 0.98, respectively. The result shows that the proposed model can accurately predict iris and non-iris regions and thus can be an effective tool for iris segmentation.
在本研究中,开发了一个用于精确虹膜分割的19层卷积神经网络模型,并使用五个公开可用的虹膜图像数据集进行了训练和验证。积分微分算子用于创建CASIA v1.0、CASIA v2.0和PolyU Iris图像数据集的标记图像。基于准确性、灵敏度、选择性、精密度和F分数来评估所提出的模型的性能。CASIA v1.0、CASIA v2.0、CASIA Iris Interval、IITD和PolyU Iris的准确度分别为0.82、0.97、0.9923、0.9942和0.98。结果表明,该模型能够准确预测虹膜和非虹膜区域,是一种有效的虹膜分割工具。
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引用次数: 0
Evaluation of Local Interpretable Model-Agnostic Explanation and Shapley Additive Explanation for Chronic Heart Disease Detection 慢性心脏病检测的局部可解释模型——不可知论解释和Shapley加性解释的评价
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.10101
T. Admassu
This study aims to investigate the effectiveness of local interpretable model-agnostic explanation (LIME) and Shapley additive explanation (SHAP) approaches for chronic heart disease detection. The efficiency of LIME and SHAP are evaluated by analyzing the diagnostic results of the XGBoost model and the stability and quality of counterfactual explanations. Firstly, 1025 heart disease samples are collected from the University of California Irvine. Then, the performance of LIME and SHAP is compared by using the XGBoost model with various measures, such as consistency and proximity. Finally, Python 3.7 programming language with Jupyter Notebook integrated development environment is used for simulation. The simulation result shows that the XGBoost model achieves 99.79% accuracy, indicating that the counterfactual explanation of the XGBoost model describes the smallest changes in the feature values for changing the diagnosis outcome to the predefined output.
本研究旨在探讨局部可解释模型不可知论解释(LIME)和Shapley加性解释(SHAP)方法在慢性心脏病检测中的有效性。通过分析XGBoost模型的诊断结果和反事实解释的稳定性和质量,对LIME和SHAP的效率进行了评价。首先,从加州大学欧文分校收集了1025份心脏病样本。然后,使用XGBoost模型对LIME和SHAP的性能进行了比较,包括一致性和接近性等各种度量。最后利用Python 3.7编程语言与Jupyter Notebook集成开发环境进行仿真。仿真结果表明,XGBoost模型的准确率达到99.79%,表明XGBoost模型的反事实解释描述了将诊断结果更改为预定义输出的特征值变化最小。
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引用次数: 1
Design and Performance Analysis of Band Pass Filter Using Frequency Selective Surface for 5G Communication 5G通信中基于频率选择面的带通滤波器设计与性能分析
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.9313
Muhammad Haroon Tariq, Muhammad Noaman Zahid
In recent years, frequency selective surfaces (FSSs) have been extensively investigated in terms of their design and practical applications at microwave and optical frequencies. This study proposes a new design of a FSS layer, which is directly placed over the surface of an antenna to enhance its characteristics such as directivity, frequency selectivity, radiation efficiency, and gain. In the proposed design, two different substrates are used to analyze the improved performance of the FSS layer. For this purpose, FR-4 Epoxy and Duroid 5880 are used for cost effectiveness and to achieve the optimized performance of the antenna. The simulated and measured results are in good agreement, indicating the enhanced performance of antenna for WLAN and WiMAX applications. Finally, it is concluded that the proposed FSS layer ensures the best possible results of the filtering response as the first null gives divergence of more than 10 dB with its peak value layer.
近年来,频率选择表面(FSS)在微波和光学频率下的设计和实际应用方面得到了广泛的研究。这项研究提出了一种新的FSS层设计,该层直接放置在天线表面上,以增强其指向性、频率选择性、辐射效率和增益等特性。在所提出的设计中,使用两种不同的基底来分析FSS层的改进性能。为此,FR-4环氧树脂和Duroid 5880用于成本效益和实现天线的优化性能。仿真和测量结果一致,表明该天线在WLAN和WiMAX应用中的性能得到了增强。最后,得出结论,所提出的FSS层确保了滤波响应的最佳结果,因为第一个零点与其峰值层的发散度超过10dB。
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引用次数: 0
Modeling and Forecasting Urban Sprawl in Sylhet Sadar Using Remote Sensing Data Sylhet Sadar城市扩张的遥感建模与预测
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.9617
Md. Aminul Islam, Tanzina Ahmed Rickty, P. Das, Md. Bashirul Haque
Forecasting urban sprawl is important for land-use and transport planning. The aim of this study is to model and predict the future urban sprawl in Sylhet Sadar using remote sensing data. The ordinary least square (OLS) regression model and the geographic information system (GIS) are used for modeling urban expansion. The model is calibrated for the years 2014 to 2017 using eight explanatory variables extracted from the regression model. The regression coefficients of the variables are found statistically significant at a 99% confidence level. The cellular automata (CA) model is then used to analyze, model, and simulate the land-use and land-cover (LULC) changes by incorporating the algorithm of logistic regression (LR). The calibrated model is used to predict the 2020 map, and the result shows that the predicted map and the actual map of 2020 are well agreed. By using the calibrated model, the simulated prediction map of 2035 shows an urban cell expansion of 220% between 2020 and 2035.
城市扩张预测对土地利用和交通规划具有重要意义。本研究的目的是利用遥感数据对锡尔赫特萨达尔未来的城市扩张进行建模和预测。利用普通最小二乘(OLS)回归模型和地理信息系统(GIS)对城市扩展进行建模。使用从回归模型中提取的8个解释变量对模型进行了2014 - 2017年的校准。变量的回归系数在99%的置信水平上具有统计学显著性。然后利用元胞自动机(CA)模型结合逻辑回归(LR)算法对土地利用和土地覆盖(LULC)变化进行分析、建模和模拟。利用校正后的模型对2020年地图进行预测,结果表明,2020年的预测地图与实际地图吻合较好。通过校正后的模型,2035年的模拟预测图显示,2020 - 2035年,中国城市小区扩张220%。
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引用次数: 0
Development of a New Ground Motion Model for a Peninsular Indian Rock Site 印度半岛岩石遗址地震动新模型的建立
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.10526
Ravi Kiran Akella, Mohan Kumar Agrawal, Jayanta Chattopadhyay
The ground motion model (GMM) plays a vital role in the generation of seismic design basis ground motion parameters. Even though many intra-plate GMMs are available, very few of them are based on Peninsular India (PI) region-specific seismological parameters. Hence, it is imperative to develop a GMM using seismological parameters derived from earthquakes in the Peninsular Indian region. In this study, a new GMM is developed for a PI rock site. Due to the scarcity of real earthquakes, artificial earthquake records are simulated to generate a new GMM for PI. The accelerograms of these artificial earthquakes are obtained from the stochastic finite fault simulation technique. Region-specific seismological parameters are obtained from the available PI earthquakes. The generated GMM is compared with other intra-plate GMMs for different earthquake magnitudes. Also, the generated GMM is validated with the Koyna earthquake record and it is observed that the GMM’s predictions are closer to the record.
地震动模型在地震设计基准地震动参数的生成中起着至关重要的作用。尽管有许多板内GMM可用,但很少有基于印度半岛(PI)地区特定地震学参数的GMM。因此,必须利用印度半岛地区地震的地震学参数来开发GMM。在本研究中,为PI岩点开发了一种新的GMM。由于真实地震的稀缺性,模拟了人工地震记录,为PI生成了一个新的GMM。这些人工地震的加速度图是通过随机有限断层模拟技术获得的。从可用的PI地震中获得了特定地区的地震学参数。将生成的GMM与不同震级的其他板内GMM进行比较。此外,生成的GMM与Koyna地震记录进行了验证,并观察到GMM的预测更接近记录。
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引用次数: 0
Non-Facial Video Spatiotemporal Forensic Analysis Using Deep Learning Techniques 基于深度学习技术的非人脸视频时空取证分析
Pub Date : 2023-01-01 DOI: 10.46604/peti.2023.10290
Premanand Ghadekar, Vaibhavi Shetty, Prapti Maheshwari, Raj Shah, Anish Shaha, Vaishnav Sonawane
Digital content manipulation software is working as a boon for people to edit recorded video or audio content. To prevent the unethical use of such readily available altering tools, digital multimedia forensics is becoming increasingly important. Hence, this study aims to identify whether the video and audio of the given digital content are fake or real. For temporal video forgery detection, the convolutional 3D layers are used to build a model which can identify temporal forgeries with an average accuracy of 85% on the validation dataset. Also, the identification of audio forgery, using a ResNet-34 pre-trained model and the transfer learning approach, has been achieved. The proposed model achieves an accuracy of 99% with 0.3% validation loss on the validation part of the logical access dataset, which is better than earlier models in the range of 90-95% accuracy on the validation set.
数字内容操作软件为人们编辑录制的视频或音频内容提供了便利。为了防止不道德地使用这种现成的更改工具,数字多媒体取证变得越来越重要。因此,本研究旨在确定给定数字内容的视频和音频是假的还是真的。对于时间视频伪造检测,使用卷积3D层来建立一个模型,该模型可以在验证数据集上以85%的平均准确率识别时间伪造。此外,使用ResNet-34预训练模型和迁移学习方法,已经实现了音频伪造的识别。所提出的模型在逻辑访问数据集的验证部分实现了99%的准确率和0.3%的验证损失,这比早期模型在验证集90-95%的准确率范围内要好。
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引用次数: 0
Investigation on Tribological Characteristics of Al 7075 MMNC: Behavior of Micro- and Nano-Sized Composites Al 7075 MMNC的摩擦学特性研究:微纳米复合材料的行为
Pub Date : 2022-07-26 DOI: 10.46604/peti.2022.8943
S. Suresh, Baridu Vinod, S. S. K. Reddy, U. Elaiyarasan
This study investigates the mechanical properties and the wear behavior of Al 7075/Al2O3/SiCNP composites. The hybrid composites are manufactured using the stir casting technique. In this work, the Al 7075 alloy is reinforced with five different weight fractions of Al2O3 and a constant SiCNp, with an average particle size of 50 nm. The aluminum metal matrix composites are examined through surface morphology and X-ray diffraction (XRD) patterns to identify the material behavior. The material characteristics and the wear behavior of the metal composites are examined using a pin-on-disk test. Wear measurements are performed by varying loads, sliding speeds, and sliding distances. The results reveal that the composites reinforced with 4% of Al2O3 particulates exhibit superior properties. The wear rate and the coefficient of friction (COF) decrease with the increase in the reinforcement content.
研究了Al7075/Al2O3/SiCNP复合材料的力学性能和磨损行为。混合型复合材料采用搅拌铸造技术制造。在这项工作中,用五种不同重量分数的Al2O3和恒定的SiCNp增强Al 7075合金,平均粒径为50nm。通过表面形貌和X射线衍射(XRD)图谱对铝金属基复合材料进行了检测,以确定材料的行为。采用销盘试验研究了金属复合材料的材料特性和磨损行为。磨损测量是通过改变负载、滑动速度和滑动距离来进行的。结果表明,用4%的Al2O3颗粒增强的复合材料表现出优异的性能。随着补强剂含量的增加,磨损率和摩擦系数减小。
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引用次数: 0
Manufacture and Design an Apparatus for Measuring the Thermal Resistance of Building Materials 建筑材料热阻测试仪的研制
Pub Date : 2022-07-15 DOI: 10.46604/peti.2022.9500
Ammar Saliby, B. Kovacs
A good thermal design of buildings plays a key role in reducing the thermal loads of heating and air conditioning systems and thus reducing energy consumption. This study develops a steady-state apparatus for measuring the thermal resistance of building materials by using an absolute technique. The apparatus is designed to accommodate the full and actual size of the tested samples of building materials used in the Syrian market to ease testing. Therefore, suitable samples do not have to be built for the apparatus; the thermal resistance is measured for many samples, and the results are compared with the thermal insulation code for buildings in the Syrian Arab Republic. The results show that the difference between the resistance values obtained from the experiments and the Syrian thermal insulation code is due to the materials used in the local markets and their non-compliance with the code. These materials need testing and quality control during the manufacturing process.
良好的建筑热设计对于降低供暖和空调系统的热负荷,从而降低能耗起着关键作用。本研究开发了一种使用绝对技术测量建筑材料热阻的稳态装置。该仪器设计用于容纳叙利亚市场上使用的建筑材料测试样品的全部和实际尺寸,以便于测试。因此,不必为该装置构建合适的样品;测量了许多样品的热阻,并将结果与阿拉伯叙利亚共和国建筑隔热规范进行了比较。结果表明,从实验中获得的电阻值与叙利亚隔热规范之间的差异是由于当地市场上使用的材料及其不符合规范。这些材料在制造过程中需要进行测试和质量控制。
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引用次数: 0
Experimental and Analytical Study of Silica Particles on Self-Healing Concrete 自修复混凝土中二氧化硅颗粒的试验与分析研究
Pub Date : 2022-07-15 DOI: 10.46604/peti.2022.9477
K. Reddy, K. Kumar
This study aims to investigate the properties of green concrete made with ground granulated blast-furnace slag (GGBS), Robo sand (RS), and coconut shell (CS). GGBS is the mineral admixture used to replace cement. Nano-silica particles (NSPs) and CS are used as coarse aggregates, and RS is the fine aggregate used to replace river sand. The workability, mechanical properties, and durability properties of green concrete are investigated and compared with those of conventional concrete (CC). Test results show that the cement replaced with 30% GGBS and 3% NSPs exhibits superior strength. The compressive and splitting tensile strengths are increased by 24.03% and 42.32% after 28 days of curing, respectively. The workability is improved by 12.22% (slump) and 13.25% (compaction factor) after 28 days of curing. The sorptivity of HM3 (3.26%) is lower than that of CC due to the uniform distribution between particles. Microstructure evolution is carried out to identify concrete mix behavior.
本研究旨在探讨以矿渣粉(GGBS)、Robo砂(RS)、椰壳(CS)为原料制备绿色混凝土的性能。GGBS是用于替代水泥的矿物掺合料。纳米二氧化硅颗粒(NSPs)和CS作为粗集料,RS作为细集料替代河砂。研究了绿色混凝土的和易性、力学性能和耐久性,并与普通混凝土进行了比较。试验结果表明,用30% GGBS和3% NSPs替代的水泥具有较好的强度。养护28 d后,抗压强度和劈裂抗拉强度分别提高24.03%和42.32%。养护28 d后,和易性分别提高12.22%(坍落度)和13.25%(压实系数)。由于颗粒间分布均匀,HM3的吸附率(3.26%)低于CC。通过微观结构演化来识别混凝土的拌合行为。
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引用次数: 0
Increasing the Power Output of a PV Solar System by Using a Cooling-Reflector Assembly 利用冷却反射器组件增加光伏太阳能系统的输出功率
Pub Date : 2022-07-14 DOI: 10.46604/peti.2022.9976
N. K. Kasim, Hazim Hussain, Alaa N Abed
There are various methods that can be employed to increase the lifespan and power output of photovoltaic (PV) systems. This study aims to increase the power output of a grid-connected PV system by using a water-cooling unit and solar reflectors. The PV modules of the current PV system are divided into two clusters. The first cluster, which is considered an improved cluster, has a solar reflector-cooling unit added to it, while the second cluster is used as a reference. The results show that the maximum efficiency and performance ratio values of the improved and reference PV modules at 10:30 AM are 14.7% & 13.7% and 97.5% & 91.2%, respectively. The maximum electrical power values of the improved and reference PV modules at 12:00 PM are 2.55 W and 1.69 W, respectively. The maximum gain value for electrical power is 43%.
有各种方法可以用来增加光伏(PV)系统的寿命和功率输出。本研究旨在通过使用水冷机组和太阳能反射器来增加并网光伏系统的功率输出。当前光伏系统的光伏模块分为两个集群。第一个集群被认为是一个改进的集群,它增加了一个太阳能反射冷却装置,而第二个集群被用作参考。结果表明,改进后的光伏组件和参考组件在10:30 AM时的最大效率和性能比分别为14.7%和13.7%和97.5%和91.2%。改进后的光伏组件和基准组件在12:00 PM时的最大电功率分别为2.55 W和1.69 W。电力的最大增益值为43%。
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引用次数: 1
期刊
Proceedings of Engineering and Technology Innovation
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