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2020 3rd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET)最新文献

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Fabrication & performance analysis of direct type passive solar dryer for chilies and grapes drying 用于辣椒、葡萄干燥的直接型被动式太阳能干燥机的研制及性能分析
Shakil Ahmed Jiskani, Iftikhar Ahmed Chandio, Ghazanfar Mehdi, A. Memon, Abdul Raqeeb Bhutto, Urooj Gul Sandilo
Now a days in the agriculture sector, agricultural drying has great importance. As compared to the open sun drying, a solar dryer has faster drying rates and it can remove moisture from vegetables and fruits in very short time. This study presents the very convenient method by using direct type passive solar dryer for drying of chilies and grapes. By removing moisture life of fruits and vegetables can be enhanced and these can be used and conserved for long time. This drying technique not only evaporates but also provides a controlled and safe storage of products. A closed wooden casing along with glass and black colored metallic sheet was employed to achieve the maximum temperature. An average inside air temperature of 60-70°C was achieved, whereas an average outside air temperature of 33-44°C was noted in the months of October and November. Solar illuminance was measured by lux meter. The maximum values for illuminance was in between 8000-12000 lux from 10:30 am to 4:30 am. 20-40% moisture lost per day for three days of drying session. Chilies and grapes were used as a test product. For chilies 85% of moisture was evaporated in 15 hours, while maximum inside air temperature gained inside the dryer was 70 °C. And for Grapes 75% moisture was dehydrated in 15 hours, while maximum inside air temperature noted within the dryer was 68°C.
在当今的农业领域,农业干燥具有十分重要的意义。与露天干燥相比,太阳能干燥机具有更快的干燥速度,可以在很短的时间内去除蔬菜和水果中的水分。本研究提出了一种简便易行的方法,即利用直接式被动式太阳能干燥机干燥辣椒和葡萄。通过去除水分可以延长水果和蔬菜的寿命,并可以长期使用和保存。这种干燥技术不仅蒸发,而且提供了一个控制和安全的储存产品。一个封闭的木制外壳以及玻璃和黑色金属板被用来达到最高温度。室内平均气温为60-70°C,而10月和11月的室外平均气温为33-44°C。用勒克斯计测量太阳照度。10∶30 ~ 4∶30光照度最大值在8000 ~ 12000勒克斯之间。干燥三天,每天水分损失20-40%。辣椒和葡萄被用作试验产品。对于辣椒,85%的水分在15小时内蒸发,而烘干机内获得的最高空气温度为70°C。对于葡萄,75%的水分在15小时内脱水,而烘干机内记录的最高空气温度为68°C。
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引用次数: 2
Options Pricing for Two Stocks by Black – Sholes Time Fractional Order Non – Linear Partial Differential Equation 用黑肖尔斯时间分数阶非线性偏微分方程求解两种股票的期权定价
K. Zakaria, S. Hafeez
The BS equations with fractional order two asset price model give the better prediction of options pricing in the monetary market. In this paper, the changed form of BS-condition with two asset price models dependent on the Liovelle-Caputo derivative for good predictions of options prices is utilized. The analytical solution is demonstrated in form of convergent infinite series and obtained by the properties of Samdu Transform.
带有分数阶二资产价格模型的BS方程能较好地预测货币市场上的期权定价。本文利用bs条件的变化形式和两个依赖Liovelle-Caputo导数的资产价格模型,对期权价格进行了较好的预测。利用Samdu变换的性质,以收敛无穷级数的形式给出了解析解。
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引用次数: 0
Blockchain-Based Approach for Proving the Source of Digital Media 基于区块链的数字媒体来源证明方法
S. Rehman, Muhammad U. S. Khan, Mazhar Ali
The blockchain is an intelligent and cryptographically secure technology. Blockchain provides data integrity, security, and anonymity without any third-party enabling immutable database technology with a built-in trust mechanism. In this paper, we focused on utilizing blockchain technology for proving the origin of digital media by enhancing the functionality of an existing solution. This research improves the functionality of the existing solution by using perceptual hashing. Perceptual hashing ables to differentiate similar digital media and ensures the explicit relationship between the digital media and the content creator. Experimental results show that perceptual hashing gives better performance in the detection of image alteration and sensitive to small changes.
区块链是一种智能且加密安全的技术。区块链提供数据完整性,安全性和匿名性,无需任何第三方启用不可变数据库技术,内置信任机制。在本文中,我们专注于利用区块链技术通过增强现有解决方案的功能来证明数字媒体的起源。本研究通过使用感知哈希改进了现有解决方案的功能。感知哈希表用于区分类似的数字媒体,并确保数字媒体和内容创建者之间的明确关系。实验结果表明,感知哈希算法在检测图像变化方面具有较好的性能,并且对微小的变化敏感。
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引用次数: 3
Meta-model for Stress Testing on Blockchain Nodes 区块链节点压力测试的元模型
Adil Aziz, F. Azam, Muhammad Talha Riaz, Muhammad Waseem Anwar
Blockchain nodes are essential part of a blockchain network. The quality of blockchain nodes are very crucial as these are building blocks of a network. The failure of nodes may lead to the failure of network. In this paper we have discussed the meta-model for stress testing on blockchain nodes, which will test blockchain nodes. Meta-model is based on UML 2.0. It is destined to be worked on all blockchain networks with minor changes.
区块链节点是区块链网络的重要组成部分。区块链节点的质量非常关键,因为它们是网络的构建块。节点故障可能导致网络故障。在本文中,我们讨论了用于区块链节点压力测试的元模型,该模型将测试区块链节点。元模型是基于UML 2.0的。它注定要在所有区块链网络上工作,只有微小的变化。
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引用次数: 1
Analyzing Indoor/Outdoor Environmental Effects with Varying Cell Size on 5G Millimeter-Wave Propagation 分析不同小区尺寸的室内/室外环境对5G毫米波传播的影响
Abdul Bassit Surahio, Saima Hafeez, Nafeesa Bohra
In this paper the millimeter-wave cellular communication is analyzed and simulated for the fifth-generation (5G) communication using broadband statistical spatial channel model (SSCM). This model is simulated in NYUSIM developed by research group in New York University which support the wideband carrier frequencies from 500 MHz to 100 GHz with bandwidth in the range of 0 MHz to 800 MHz. Microcells, beamforming and other similar techniques are needed to reduce the losses as the millimeter-wave are unable to travel over longer distances. Millimeter-wave frequency of 28 GHz is initially considered here and its effects on communication due to different environmental parameters such as temperature, relative humidity and rain rate in cities like Hyderabad, Karachi and Islamabad are observed while varying cell sizes. Parameters like received power, pathloss and pathloss exponent are analyzed to predict best suitable cell size in different cities environments.
本文利用宽带统计空间信道模型(SSCM)对第五代(5G)通信中的毫米波蜂窝通信进行了分析和仿真。该模型在纽约大学研究小组开发的NYUSIM中进行了仿真,NYUSIM支持500 MHz至100 GHz的宽带载波频率,带宽范围为0 MHz至800 MHz。由于毫米波无法传播较长距离,因此需要微蜂窝、波束成形和其他类似技术来减少损耗。这里最初考虑了28ghz的毫米波频率,并观察了不同的环境参数(如海得拉巴、卡拉奇和伊斯兰堡等城市的温度、相对湿度和降雨率)对通信的影响,同时观察了不同的蜂窝尺寸。分析接收功率、路径损耗和路径损耗指数等参数,以预测不同城市环境下最合适的电池尺寸。
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引用次数: 2
Enhanced Classification with Logistic Regression for Short Term Price and Load Forecasting in Smart Homes 基于逻辑回归的智能家居短期电价和负荷预测增强分类
Javaria Hameed, Rabiya Khalid, M. Javed, Sakeena Javaid, Sheeraz Ahmed, N. Javaid
In this paper, an accurate electricity load and price forecasting model has been proposed, which consists of feature engineering and classification. To remove irrelevant features, Decision Tree (DT) and Recursive Feature Elimination (RFE) are used. Features are extracted through Mutual Information (MI) after removing uncertainty. In order to attain accurate electricity load and price forecasting, Enhanced Logistic Regression (ELR) classifier is proposed. Simulation results testify that accuracy of ELR is better than Logistic Regression (LR) and MultiLayer Percepton (MLP). ELR beats LR and MLP by 0.26% and 7.287% in load forecasting, whereas, it outperforms LR and MLP in price forecasting by 1.413% and 3.057%, respectively. Smart* dataset is used, which contains the data of residential sector of Western Massachusetts. Prediction performance is evaluated by using Mean Absolute Error (MAE), Mean Square Error (MSE), Root Mean Square Error (RMSE) and Mean Absolute Percentage Error (MAPE).
本文提出了一种由特征工程和分类技术组成的准确的电力负荷和电价预测模型。为了去除不相关的特征,使用了决策树(DT)和递归特征消除(RFE)。消除不确定性后,通过互信息(MI)提取特征。为了实现准确的电力负荷和电价预测,提出了增强型逻辑回归(ELR)分类器。仿真结果表明,ELR的准确率优于逻辑回归(LR)和多层感知(MLP)。在负荷预测方面,ELR比LR和MLP分别高出0.26%和7.287%,而在价格预测方面,ELR比LR和MLP分别高出1.413%和3.057%。使用Smart*数据集,其中包含马萨诸塞州西部住宅部门的数据。预测性能通过平均绝对误差(MAE)、均方误差(MSE)、均方根误差(RMSE)和平均绝对百分比误差(MAPE)来评估。
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引用次数: 2
ISAR Imaging using FFT with Polar Reformatting of Measured RCS 利用FFT对实测RCS进行极坐标重格式化的ISAR成像
A. Bilal, S. M. Hamza, Ziauddin Taj, S. Salamat, M. Abbas
Synthetic Aperture Radar uses radar movement for target identification and is commonly used in airborne radar systems for various applications such as oceanography, glaciology and military surveillance. On the contrary, for range-cross range profiling, Inverse Synthetic Aperture Radar exploits the target motion and is employed in ground based radar systems. In this work, ISAR imaging of two stealth fighter aircraft models is performed by reformatting the scattered field data from a polar grid to a Cartesian grid using the nearest neighbor interpolation method. Although numerical noise generated by this interpolation is unavoidable, a comparison of experimental and simulation results shows that this method can be used for identification of major scattering centers on low observable targets.
合成孔径雷达利用雷达运动进行目标识别,通常用于机载雷达系统的各种应用,如海洋学、冰川学和军事监视。相反,对于距离-交叉距离剖面,逆合成孔径雷达利用目标运动,应用于地面雷达系统。本文采用最近邻插值法,对两种隐身战斗机模型的散射场数据进行了极坐标网格到直角坐标网格的重新格式化,实现了ISAR成像。虽然插值产生的数值噪声是不可避免的,但实验和仿真结果的对比表明,该方法可以用于低可观测目标上主要散射中心的识别。
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引用次数: 2
A Survey on Edge Detection based recent Marine Horizon Line Detection Methods and their Applications 基于边缘检测的海洋水平线检测方法及其应用综述
M. Hashmani, Muhammad Umair, Syed Sajjad Hussain Rizvi, Abdul Rehman Gilal
Sea and sky boundary identification (i.e. marine horizon line detection) from a marine image is a problem of great interest for reasons such as, unmanned surface or aerial vehicle navigation, surveillance by object detection and tracking, and determining the spatial orientation of the ship. Due to the complexity of the marine environment, the problem poses its own unique challenges. In recent years, different methods have been proposed by the researchers to solve the problem. Those methods can be grouped into two categories; (i) edge detection based horizon detection, and (ii) machine learning-based horizon detection. In this paper, we present a survey on edge detection based recent marine horizon line detection methods and their applications. We have selected studies from the previous three years and discussed each study’s approach to marine horizon line detection issue, the datasets used for testing purposes and its results. The authors’ observations for each study are presented with a recommendation for their suitability for a specific application in the marine environment. Findings of the survey and future research directions for the researchers are also identified and presented. We hope that this survey paper provides a comprehensive overview of edge detection based recent marine horizon line detection methods and help the researchers in exploring new solutions to this challenging problem.
从海洋图像中识别海天边界(即海洋地平线检测)是一个非常有趣的问题,原因包括无人水面或飞行器导航,通过目标检测和跟踪进行监视,以及确定船舶的空间方向。由于海洋环境的复杂性,这一问题带来了独特的挑战。近年来,研究人员提出了不同的方法来解决这个问题。这些方法可以分为两类;(i)基于边缘检测的水平检测,(ii)基于机器学习的水平检测。本文综述了基于边缘检测的海洋水平线检测方法及其应用。我们选择了过去三年的研究,并讨论了每个研究对海洋水平线检测问题的方法,用于测试目的的数据集及其结果。作者对每项研究的观察都提出了一项建议,说明它们是否适合海洋环境中的特定应用。最后,提出了本研究的结论和未来的研究方向。我们希望本文能提供一个基于边缘检测的最新海洋水平线检测方法的全面概述,并有助于研究人员探索解决这一具有挑战性的问题的新方法。
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引用次数: 6
Brain Computer Interface Implementation on Cognitive States 认知状态的脑机接口实现
B. Shah, Zamra Sultan, Z. Rizvi, Munnaza Iqbal, Usama Bin Zaheer, Syed Huzaif Shah, Samiya Khaliq, Shahrukh Zia, B. Khan, Sajjad Haider Zaidi
Brain–Computer Interface (BCI) is a channel of communication between a brain and a machine. It is based on the interpretation of the electrical activity of mind and can be used to direct any external action such as control of a wheelchair. This paper discusses the development of a cost effective, efficient, non-invasive and easy to use multiclass BCI. For this self-acquired Electroencephalography (EEG) signals of different cognitive actions recorded over cerebral cortexes of different people are analyzed and then classified using Linear Discriminant Analysis (LDA). These classified signals are used to control the movement of a self-developed prototype of stretcher via a microcontroller. Stretcher in the proposed model can be replaced by any other machine and that machine can be controlled directly by brain. Hence this novel model can be used to develop brain-controlled devices for normal people as well as for People with Disability (PWD).
脑机接口(BCI)是大脑和机器之间的通信通道。它是基于对大脑电活动的解释,可以用来指导任何外部动作,比如控制轮椅。本文讨论了一种经济、高效、无创、易于使用的多级脑机接口的研制。对记录在不同人大脑皮层的不同认知动作的自获得性脑电图(EEG)信号进行分析,并用线性判别分析(LDA)对其进行分类。利用这些分类信号,通过单片机控制自行研制的担架样机的运动。所提出的模型中的担架可以被任何其他机器取代,并且机器可以直接由大脑控制。因此,这种新颖的模型可以用于为正常人和残疾人(PWD)开发脑控制设备。
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引用次数: 3
A Comparative Study of Automatic Vessel Segmentation Algorithms 自动血管分割算法的比较研究
Owais Ali, Nazeer Muhammad, Zainab Jadoon, Bibi Misbah Kazmi, Nayab Muzamil, Z. Mahmood
Vessels appearance and their morphological features play a vital part in timely treatment of numerous diseases, such as vein occlusions and diabetic retinopathy. This paper presents a detailed comparison of three recently developed vessel segmentation algorithms in terms of Accuracy (Acc), Sensitivity (Se), and Specificity (Sp) on two publicly available DRIVE and STARE datasets. Our simulations indicate that for high image resolution of 400×500 pixels or above and on DRIVE dataset the frangi and Otsu thresholding based vessel segmentation algorithm yields the highest Accuracy. Whereas on STARE dataset, Unet based convolutional neural network based vessel segmentation algorithm outperforms the compared algorithms at the cost of higher computational time.
血管的外观及其形态特征对许多疾病的及时治疗起着至关重要的作用,如静脉闭塞和糖尿病视网膜病变。本文详细比较了最近开发的三种血管分割算法在两个公开可用的DRIVE和STARE数据集上的准确性(Acc)、灵敏度(Se)和特异性(Sp)。我们的模拟表明,对于400×500像素或更高的高图像分辨率,在DRIVE数据集上,基于frangi和Otsu阈值的血管分割算法产生最高的精度。而在STARE数据集上,基于Unet的卷积神经网络血管分割算法以更高的计算时间为代价优于对比算法。
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引用次数: 4
期刊
2020 3rd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET)
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