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2019 International Conference on Computer, Communication, Chemical, Materials and Electronic Engineering (IC4ME2)最新文献

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Power Quality Improvement with Single Phase Boost Rectifier using Fuzzy Logic Control 利用模糊逻辑控制改善单相升压整流器的电能质量
K. Huda, S. Shuvo, Kazi Abu Zilani, M. R. T. Hossain
For regulation of DC output voltage with unity power factor of AC-DC converter, a controlling procedure has been introduced in this paper which accounts for the effects of harmonics in non-linear loads. The scheme incorporates a single phase full bridge rectifier in conjunction with a PFC boost converter controlled by the fuzzy logic controller. The non-linear effects of bridge rectifier is compensated by hysteresis current control technique directed by the boost converter. The results show that the proposed controller can regulate the DC output voltage over a wide range of load and input voltage variation while making the input current sinusoidal with improved power factor.
针对单位功率因数的交直流变换器直流输出电压的调节问题,提出了一种考虑非线性负载中谐波影响的控制方法。该方案结合了一个单相全桥整流器和一个模糊逻辑控制器控制的PFC升压变换器。通过升压变换器的磁滞电流控制技术补偿桥式整流器的非线性效应。结果表明,该控制器可以在较大的负载和输入电压变化范围内调节直流输出电压,同时使输入电流呈正弦波,提高了功率因数。
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引用次数: 1
Diabetic Retinopathy Classification with a Light Convolutional Neural Network 基于轻卷积神经网络的糖尿病视网膜病变分类
M. Chowdhury, Faozia Rashid Taimy, Niloy Sikder, A. Nahid
The number of diabetic patients is increasing rapidly every year all around the world, and the worst fact is that these patients suffer from a wide range of physical conditions directly associated with long-term diabetes. Diabetic Retinopathy (DR) is a perfect example which affects the eyes of more than 50% of all diabetes patients to some degree. Starting from blurred vision, the effects of DR can extend to permanent blindness; and in most of the cases, victims fail to report any early symptoms. The traditional detection process of DR involves a trained clinician who takes enhanced pictures of the retina and looks for the presence of lesions and vascular abnormalities within them, which by description is a time-consuming and error-prone procedure. Alternatively, we can employ machine learning techniques that will automate the detection process as well as provide fast and more importantly, reliable results. Using a deep learning technique this paper determines the presence and severity of DR in diabetic individuals by analyzing the pictures of their retina. The CNN-based models are potent enough to carry out their tasks with accuracy up to 89.07%, even when the images are captured or provided in very low resolutions.
全世界糖尿病患者的数量每年都在迅速增加,最糟糕的事实是,这些患者患有与长期糖尿病直接相关的各种身体状况。糖尿病视网膜病变(DR)就是一个很好的例子,超过50%的糖尿病患者的眼睛都受到了不同程度的影响。从视力模糊开始,DR的影响可以扩展到永久性失明;在大多数情况下,受害者没有报告任何早期症状。DR的传统检测过程包括一个训练有素的临床医生,他拍摄视网膜的增强照片,寻找病变和血管异常的存在,根据描述,这是一个耗时且容易出错的过程。或者,我们可以采用机器学习技术,将检测过程自动化,并提供快速,更重要的是,可靠的结果。本文使用深度学习技术,通过分析糖尿病患者视网膜的图片来确定DR的存在和严重程度。基于cnn的模型即使在以非常低的分辨率捕获或提供图像时,也足以以高达89.07%的准确率执行任务。
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引用次数: 10
Bangladeshi Plant Recognition using Deep Learning based Leaf Classification 基于叶子分类的深度学习孟加拉植物识别
Sultana Umme Habiba, Md. Khairul Islam, S. M. M. Ahsan
At present deep learning-based object recognition approaches have placed a tremendous effect for classifying different objects. Leaves recognition using supervised learning has shown satisfying performance which may help in various research purposes also. In our work, we have used a deep convolutional neural network as a classifier. We have used a transfer learning approach. We have prepared our work dataset based on Bangladeshi plants which contains eight different classes of leaves. We have experimented with VGG16, VGG19, Resnet50, InceptionV3, Inception-Resnetv2 and Xception deep convolutional neural network models where we have found the highest value in VGG 16 which shows almost 96% classification accuracy. Recognition of useful plants using leaf image will be greatly helpful in the research of ayurvedic and endangered plants.
目前,基于深度学习的物体识别方法在分类不同物体方面取得了巨大的进展。利用监督学习进行叶子识别已经显示出令人满意的效果,这也可能有助于各种研究目的。在我们的工作中,我们使用了深度卷积神经网络作为分类器。我们使用了迁移学习方法。我们已经准备了基于孟加拉国植物的工作数据集,其中包含八种不同类型的叶子。我们对VGG16、VGG19、Resnet50、InceptionV3、Inception-Resnetv2和Xception深度卷积神经网络模型进行了实验,我们发现VGG16的分类准确率最高,接近96%。利用叶片图像识别有用植物将对阿育吠陀和濒危植物的研究有很大的帮助。
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引用次数: 8
Sentiment Analysis with NLP on Twitter Data 推特数据的NLP情感分析
Md Rakibul Hasan, M. Maliha, M. Arifuzzaman
Every social networking sites like facebook, twitter, instagram etc become one of the key sources of information. It is found that by extracting and analyzing data from social networking sites, a business entity can be benefited in their product marketing. Twitter is one of the most popular sites where people used to express their feelings and reviews for a particular product. In our work, we use twitter data to analyze public views towards a product. Firstly, we have developed a natural language processing (NLP) based pre-processed data framework to filter tweets. Secondly, we incorporate Bag of Words (BoW) and Term Frequency-Inverse Document Frequency (TF-IDF) model concept to analyze sentiment. This is an initiative to use BoW and TFIDF are used together to precisely classify positive and negative tweets. We have found that by exploiting TF-IDF vectorizer, the accuracy of sentiment analysis can be substantially improved and simulation results show the efficiency of our proposed system. We achieved 85.25% accuracy in sentiment analysis using NLP technique.
每个社交网站,如facebook, twitter, instagram等,都成为信息的主要来源之一。研究发现,通过从社交网站中提取和分析数据,企业实体可以在其产品营销中受益。Twitter是最受欢迎的网站之一,人们用来表达他们对特定产品的感受和评论。在我们的工作中,我们使用twitter数据来分析公众对产品的看法。首先,我们开发了一个基于自然语言处理(NLP)的预处理数据框架来过滤推文。其次,我们结合词袋(BoW)和词频-逆文档频率(TF-IDF)模型概念进行情感分析。这是一个将BoW和TFIDF结合使用来精确分类正面和负面推文的倡议。我们发现,利用TF-IDF矢量器可以大大提高情感分析的准确性,仿真结果表明了我们提出的系统的效率。我们使用NLP技术进行情感分析,准确率达到85.25%。
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引用次数: 34
Prognostic Biomarker Identification for Pancreatic Cancer by Analyzing Multiple mRNA Microarray and microRNA Expression Datasets 通过分析多个mRNA微阵列和microRNA表达数据集来鉴定胰腺癌的预后生物标志物
Azmain Yakin Srizon, Md. Al Mehedi Hasan
Having the five-year survival rate of approximately 5%, currently, the fourth leading reason for cancer-related deaths is pancreatic cancer. Previously, various works have concluded that early diagnosis plays a significant role in improving the survival rate and different online tools have been used to identify prognostic biomarker which is a long process. We think that the statistical feature selection method can provide a better and faster result here. To establish our statement, we selected three different mRNA microarray (GSE15471, GSE28735 and GSE16515) and a microRNA (GSE41372) dataset for identification of differentially expressed genes (DEGs) and differentially expressed microRNAs (DEMs). By using a parametric test (Student’s t-test), 178 DEGs and 16 DEMs were selected. After identifying target genes of DEMs, we selected two DEGs (ECT2 and NRP2) which were also identified among DEMs target genes. Furthermore, overall survival analysis confirmed that ECT2 and NRP2 were correlated with inadequate overall survival. Hence, we concluded that for pancreatic cancer, a parametric test like Student’s t-test can perform better for biomarker identification, and here, ECT2 and NRP2 can act as possible biomarkers. All the resources, programs and snippets of our literature can be discovered at https://github.com/Srizon143005/PancreaticCancerBiomarkers.
目前,胰腺癌的5年生存率约为5%,是癌症相关死亡的第四大原因。以前,各种工作已经得出结论,早期诊断对提高生存率起着重要作用,并且使用了不同的在线工具来识别预后生物标志物,这是一个漫长的过程。我们认为统计特征选择方法在这里可以提供更好更快的结果。为了证实我们的观点,我们选择了三种不同的mRNA芯片(GSE15471、GSE28735和GSE16515)和一个microRNA (GSE41372)数据集来鉴定差异表达基因(DEGs)和差异表达microRNA (dem)。通过参数检验(学生t检验),选取了178个deg和16个dem。在确定了DEMs的靶基因后,我们选择了两个DEGs (ECT2和NRP2),它们也在DEMs的靶基因中被鉴定出来。此外,总生存分析证实,ECT2和NRP2与总生存不足相关。因此,我们得出结论,对于胰腺癌,参数检验(如Student’s t检验)可以更好地识别生物标志物,在这里,ECT2和NRP2可以作为可能的生物标志物。我们所有的资源、节目和文献片段都可以在https://github.com/Srizon143005/PancreaticCancerBiomarkers上找到。
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引用次数: 0
Effect of different enbNodes on Millimeter Wave Communication 不同enbNodes对毫米波通信的影响
N. H. M. Bhuyan, Mamun Ahmed
Research in allocated radio spectrum for millimeter wave communication is one of the growing interest and recent development this concepts foster evolution of the new frontier for wireless communication system. The millimeter wave band (30 GHz to 300 GHz and wavelength range from 10 to 1 mm) falls in over 90% of the allocated radio spectrum. The focus of this work is using different enbNodes (eNodeB) in millimeter wave (mmWave) implementation of signal-to-interference-plus-noise ratio (SINR) for different enbNodes in network simulator ns-3. Finally, the result of our simple millimeter wave communication simulation is: if enbNodes increase then the SINR will decrease.
毫米波通信频谱分配的研究是近年来研究热点之一,这一概念推动了无线通信系统新领域的发展。毫米波频段(30ghz至300ghz,波长范围为10至1mm)占已分配无线电频谱的90%以上。这项工作的重点是在网络模拟器ns-3中使用不同的enbNodes (eNodeB)在毫米波(mmWave)中实现信号干扰加噪声比(SINR)。最后,我们的简单毫米波通信仿真结果是:如果enbNodes增加,则信噪比会降低。
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引用次数: 0
Automated Biogas Grid for Sustainable Development in Rural Area 面向农村可持续发展的自动化沼气网
A. M. Jahirul Islam, J. Saha, K. Roy, A. Barua
At present, most of the people in rural areas use biomass such as wood, cow dung, jute sticks or other agricultural wastes for cooking in the clay stoves. Those traditional clay stoves not only inefficient but also poorly ventilated. As a result, they produce fine particles, aromatic hydrocarbons, carbon monoxide, and dioxins that cause air pollution. However, traditional biogas system accomplished in developing countries and some least developed countries (e.g. Bangladesh) are not automated. In this paper, an automated bidirectional business concept is introduced where both buyers and sellers are benefited at the same time in rural areas. In this community business model, people sell biogas from their micro biogas plant through the automated grid. This research is a master-slave wireless system based on Arduino that incorporates with payment system via a mobile application. RF pair along with transmitter and receiver is used in order to get transmitting and receiving biogas quantity and other signals for every user. In addition, an analytic calculation is done for the performance test of the proposed system.
目前,在农村地区,大多数人使用生物质,如木材、牛粪、黄麻棍或其他农业废弃物在粘土炉中烹饪。那些传统的粘土炉不仅效率低,而且通风不良。因此,它们会产生细颗粒、芳香烃、一氧化碳和二恶英,造成空气污染。然而,在发展中国家和一些最不发达国家(如孟加拉国)完成的传统沼气系统并不是自动化的。本文提出了农村地区买卖双方同时受益的自动化双向经营概念。在这种社区商业模式中,人们通过自动化电网出售微型沼气厂生产的沼气。本研究是一个基于Arduino的主从无线系统,通过移动应用程序与支付系统相结合。为了得到每个用户发送和接收的沼气量等信号,采用射频对配合发射器和接收器。此外,还对系统的性能测试进行了分析计算。
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引用次数: 0
Heart Condition Monitoring Using Ensemble Technique Based on ECG Signals’ Power Spectrum 基于心电信号功率谱集成技术的心电监测
Ananna Rahman, Niloy Sikder, A. Nahid
Observing the condition of the cardiovascular system is a vital task in the medical sector. The electrocardiogram (ECG) is such a tool that can be used to detect cardiovascular abnormalities. The advanced techniques of Machine Learning can help us to detect such abnormalities with the help of computers. But to effectively train the machine, we need to extract meaningful features from the ECG signals instead of using the raw signal as input. In this study, a set of handcrafted features have been extracted after signal preprocessing and used to train a classifier properly. The aim of this paper is to propose an effective technique to classify 17 different classes of ECG signals based on an ensemble learning algorithm named Random Forest (RF) classifier. The method provides 88% classification accuracy.
观察心血管系统的状况是医疗部门的一项重要任务。心电图(ECG)就是这样一种可以用来检测心血管异常的工具。机器学习的先进技术可以帮助我们在计算机的帮助下检测这些异常。但是为了有效地训练机器,我们需要从心电信号中提取有意义的特征,而不是将原始信号作为输入。在本研究中,在信号预处理后提取一组手工特征,并将其用于训练分类器。本文的目的是提出一种基于随机森林(RF)分类器的集成学习算法对17种不同类型的心电信号进行有效分类。该方法的分类准确率为88%。
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引用次数: 1
A comparative analysis of band selection techniques for hyperspectral image classification 高光谱图像分类中波段选择技术的比较分析
Md. Rifaet Ullah, Md. Al Mehedi Hasan, Julia Rahman, Md. Khaled Ben Islam
Finding an optimal subspace of bands that has the most expressive power for classifying hyperspectral image has been very challenging task due to its insufficient number of training pixels with respect to large number of bands. Feature reduction is considered a promising solution in this type of task. However, it is very hard to select an optimal feature reduction technique which is effective as well as computationally efficient in case of hyperspectral image classification. Moreover, it becomes challenging when the number of training pixels of a class is not sufficient. In this paper, we have rigorously studied some feature selection techniques for reducing spectral dimension by considering all the classes in hyperspectral image on a benchmark data set. We have projected that this study will be very supportive for further study on band selection and hyperspectral image classification.
由于相对于大量波段,高光谱图像的训练像素数量不足,寻找最优的波段子空间对高光谱图像进行分类是一项非常具有挑战性的任务。特征缩减被认为是这类任务中很有前途的解决方案。然而,在高光谱图像分类中,很难选择一种既有效又计算效率高的最优特征约简技术。此外,当一个类的训练像素数量不足时,它变得具有挑战性。本文通过在一个基准数据集上考虑高光谱图像的所有类别,对光谱降维的一些特征选择技术进行了严格的研究。我们预计该研究将对波段选择和高光谱图像分类的进一步研究提供支持。
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引用次数: 0
Identification of Metabolomic Biomarker using Multiple Statistical Techniques and Recursive Feature Elimination 使用多重统计技术和递归特征消除识别代谢组学生物标志物
Tahsin Masrur, Md. Al Mehedi Hasan
Mortality rate of diseases like lung cancer can be decreased significantly by increasing the chance of early diagnosis. Identifying differentially expressed (DE) metabolites may contribute remarkably in this concern, and also in drug design. In the past, several kinds of approaches were attempted to discover biomarkers for diseases. Nonetheless, discovering compact-sized biomarkers while maintaining satisfactory classification performance is still a challenge. Therefore, for further contribution in this sector, we have declared biomarkers from our identified DE metabolites in plasma and serum blood sample of lung cancer. Student’s t-test, Kruskal-Wallis and Mann-Whitney-Wilcoxon test were applied to distinguish the DE metabolites. Cluster heatmap plot and fold change values were used to differentiate between up and down-regulated metabolites. Finally, RFE method was used to order the metabolites and select biomarkers from them. To assess the performance with our DE metabolites or biomarkers, SVM classifier was utilized. We found 28 DE metabolites from plasma dataset and 13 from serum (p-value $lt 0.05)$. In the end, 8 metabolites were selected from plasma sample and 5 were selected from serum sample as the metabolomic biomarkers. The relevant files and codes of our work can be found at https://github.com/Zeronfinity/LungCancerBiomarkerRFE.
通过增加早期诊断的机会,肺癌等疾病的死亡率可以显著降低。鉴别差异表达(DE)代谢物可能在这方面有显著贡献,也有助于药物设计。过去,人们尝试了几种方法来发现疾病的生物标志物。尽管如此,在保持令人满意的分类性能的同时发现紧凑大小的生物标志物仍然是一个挑战。因此,为了在这一领域做出进一步贡献,我们宣布了肺癌血浆和血清血液样本中已鉴定的DE代谢物的生物标志物。采用学生t检验、Kruskal-Wallis检验和Mann-Whitney-Wilcoxon检验区分DE代谢物。聚类热图图和折叠变化值用于区分上调和下调的代谢物。最后,采用RFE法对代谢物进行排序,并从中选择生物标志物。为了评估我们的DE代谢物或生物标志物的性能,使用了SVM分类器。我们从血浆数据中发现28个DE代谢物,从血清数据中发现13个DE代谢物(p值$ l0.05)$。最后,从血浆样品中选择8种代谢物,从血清样品中选择5种代谢物作为代谢组学生物标志物。我们工作的相关文件和代码可在https://github.com/Zeronfinity/LungCancerBiomarkerRFE找到。
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引用次数: 1
期刊
2019 International Conference on Computer, Communication, Chemical, Materials and Electronic Engineering (IC4ME2)
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