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2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)最新文献

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Influence Analysis of Network Density on White-Hat Worm and Basic Strategy for Botnet Defense System 网络密度对白帽蠕虫的影响分析及僵尸网络防御系统的基本策略
S. Yamaguchi
A cybersecurity system called Botnet Defense System (BDS) uses white-hat worms to defend IoT systems against malware like Mirai. This paper analyzes the influence that whitehat worms come under from network structure. The analysis is focused on network density. Using agent-oriented Petri nets, we expressed IoT systems having different network density. Through the simulation evaluation of the model, we revealed that if the network density is low, the white-hat worms become inefficient. In addition, based on the result we proposed a basic strategy for BDS: If a given IoT system has low network density, the BDS should launch as many worms as possible.
一种名为僵尸网络防御系统(BDS)的网络安全系统使用白帽蠕虫来保护物联网系统免受Mirai等恶意软件的攻击。本文分析了网络结构对白帽蠕虫的影响。分析的重点是网络密度。利用面向智能体的Petri网,我们表达了具有不同网络密度的物联网系统。通过对模型的仿真评估,我们发现当网络密度较低时,白帽蠕虫的效率会降低。此外,在此基础上提出了北斗系统的基本策略:在给定物联网系统网络密度较低的情况下,北斗系统应尽可能多地发射蠕虫。
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引用次数: 0
Optimal Design in Distribution Substation’s Grounding System for Decreasing Touch Voltage 配电所接地系统降低接触电压的优化设计
A. Puttarach, T. Kasirawat, S. Panta, A. Phayomhom, C. Pongsriwat, Wirat Nakkrongdee
This paper presents a technique for grounding system design in a small area distribution substation. Compression ratio adjustment in order to decrease touch voltage is hard to design with this situation due to the limitation of area. Furthermore, this condition can’t use the ground rod length increasing method since the length doesn’t reach bottom layer of the ground. So this paper will show a method for solve this problem by using apparent resistivity from field, then analyze and estimate the resistivity with steepest descent method, after that simulate grounding system with two layers of soil by using CDEGS software base on IEEE 80-2000. The results show that touch voltage decrease 47.48 percent when increase ground grid and ground rod in square type at the edge of substation although bottom layer has more soil resistivity than top layer.
本文介绍了小面积变电站接地系统的设计方法。在这种情况下,由于面积的限制,很难设计出通过调整压缩比来降低触摸电压的方法。此外,这种情况下,由于接地杆长度没有达到地面底层,不能使用增加接地杆长度的方法。为此,本文提出了用现场视电阻率法求解该问题的方法,然后用最陡下降法对电阻率进行分析和估计,最后利用基于ieee80 -2000的CDEGS软件对两层土的接地系统进行模拟。结果表明:虽然底层土壤电阻率高于顶层,但在变电站边缘增加方形接地网和接地棒后,接触电压降低47.48%;
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引用次数: 0
Extraction of Trend Keywords from Thai Twitters using N-Gram Word Combination 基于N-Gram词组合的泰语twitter趋势关键词提取
Tanatorn Tanantong, Sasitorn Kreangkriwanich, Nasith Laosen
Extracting keywords from text on social media facilitates people to update news and trends. It reduces time spent for identifying main content from huge amount of data, and it can be used to identify situations or events that most of people mention in each period of time. This paper proposes a method for extracting keywords from Thai text on social media. A N-gram-based word-combination technique is presented to segment words that are not in dictionaries and increase the precision of word segmentation. Posts on Twitter concerning universities in Thailand are used as a case study for extracting keywords and analyzing trends. The experimental results show that the proposed method yield the highest precision of 70%.
从社交媒体上的文本中提取关键字有助于人们更新新闻和趋势。它减少了从大量数据中识别主要内容所花费的时间,并且可以用来识别每个时间段大多数人提到的情况或事件。本文提出了一种从社交媒体上的泰语文本中提取关键词的方法。提出了一种基于n -gram的词组合技术,对字典中没有的词进行分词,提高了分词的精度。Twitter上有关泰国大学的帖子被用作提取关键词和分析趋势的案例研究。实验结果表明,该方法的检测精度最高可达70%。
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引用次数: 2
Geospatial Cyberinfrastructure for Regional Economic Growth 区域经济增长的地理空间网络基础设施
A. Asaduzzaman, D. Gupta
Cyberinfrastructure (CI) has potential to assist economic activities that involve real-time data analytics. Important challenges include the integration of essential geospatial principles (such as spatial constraints in assessing events) with CI to offer a promising pathway for solving complex problems and improving just-in-time decision-making practices for economic success. As a new contribution to extend the effectiveness of CI, we propose a novel geospatial CI (GCI) that provides support for making immediate business decisions by conducting vehicular traffic data acquisition, analysis, and distribution. Important features of the proposed GCI include heuristic traffic data portals (DPs), real-time analytic engine (AE), Cloud-Fog-Mist computing, distribution mechanism (DM), and business model (BM). According to the preliminary results through MATLAB and Python simulation using synthetic workload, the proposed GCI assists increase profit up to 90% and 70% for a fast food restaurant and a gas station, respectively. The proposed GCI can be extended for sustaining regional economic growth through the adoption of emerging technologies such as Internet-of-Things (IoT).
网络基础设施(CI)具有协助涉及实时数据分析的经济活动的潜力。重要的挑战包括将基本的地理空间原则(如评估事件的空间约束)与CI相结合,为解决复杂问题和改善经济成功的及时决策实践提供有希望的途径。作为扩展CI有效性的新贡献,我们提出了一种新的地理空间CI (GCI),它通过进行车辆交通数据的采集、分析和分发,为即时业务决策提供支持。GCI的重要特性包括启发式交通数据门户(DPs)、实时分析引擎(AE)、云雾雾计算(Cloud-Fog-Mist computing)、分布机制(DM)和商业模型(BM)。根据MATLAB和Python模拟合成工作量的初步结果,所提出的GCI可以帮助快餐店和加油站分别增加90%和70%的利润。提议的GCI可以通过采用物联网(IoT)等新兴技术来扩展,以维持区域经济增长。
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引用次数: 1
Control and Simulation of Hybrid VSC-HVDC Transmission Systems for Offshore Wind Farm Applications 海上风电场用VSC-HVDC混合输电系统的控制与仿真
Natin Janjamraj, Wichian Ooppakaew, V. Pirajnanchai
This paper presents the control systems of hybrid VSC-HVDC transmission systems is applied for offshore wind farm applications. The conventional voltage source converter (VSC) is applied for rectifier-side converter and modular multilevel converter (MMC) is applied for inverter-side converter. This topology is maintained the flexible control of active and reactive power and it can improve the voltage waveforms and harmonics of output power qualities. The simulation systems are simulated by MATLAB/Simulink program. The simulation results are shown performances of the control systems are proposed and output voltage waveforms and total harmonic distortion (THD) of the proposed system are improved the power quality without output filter required.
本文介绍了一种用于海上风电场的vdc - hvdc混合输电系统的控制系统。整流侧变换器采用传统电压源变换器(VSC),逆变侧变换器采用模块化多电平变换器(MMC)。这种拓扑结构既保持了有功和无功的灵活控制,又能改善输出电能的电压波形和谐波质量。利用MATLAB/Simulink程序对仿真系统进行了仿真。仿真结果表明,所提出的控制系统性能良好,在不需要输出滤波器的情况下,改善了系统的输出电压波形和总谐波失真(THD)。
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引用次数: 0
Detection of Animal Behind Cages Using Convolutional Neural Network 利用卷积神经网络检测笼后动物
N. Li, Worapan Kusakunniran, S. Hotta
There are many attempts on detecting animal using Convolutional Neural Network. However, many of them failed to detect animals behind cage bars as the mesh patterns of such bars usually affected a detectability of a detection model. A main hypothesis is that most of existing models trained for detecting animals does not have enough pictures of animals behind cage bars as in a training set. In this paper, panda and deer are used as case examples. The training data is gathered specifically for this research work. The M2Det is used as the main network together with the transfer learning approach and its pretrained weights. In our experiments, it is found that a number of training images of animals behind cage bars greatly affects the detection performance. Also, adding more training images of animals without cages could also improve the performance of the detection model on the same task.
利用卷积神经网络检测动物已有很多尝试。然而,由于笼栅的网状结构通常会影响检测模型的可探测性,因此许多检测模型未能检测到笼栅后的动物。一个主要的假设是,大多数现有的用于检测动物的训练模型没有足够的动物在笼子里的图片,就像在训练集中一样。本文以熊猫和鹿为例。训练数据是专门为本研究工作收集的。M2Det与迁移学习方法及其预训练的权值一起作为主网络。在我们的实验中,我们发现大量的动物在笼栏后面的训练图像对检测性能有很大的影响。此外,添加更多没有笼子的动物的训练图像也可以提高检测模型在同一任务上的性能。
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引用次数: 2
Discovering of Personal Name Prefix Patterns in Thai Researcher Corpus and Its Application 泰语研究者语料中人名前缀模式的发现及其应用
Nongnuch Ketui, Nattapong Tongtep, T. Theeramunkong
In the context of information extraction, a person’s name is one of the important named entities to be extracted which are applied to the question-answering and summarizing tasks. However, the boundary of a person’s name is still ambiguous since there are several writing patterns of a person’s name from online public data sources such as news, events, and researcher corpora. To extract, identify, and unify the person’s name, discovering the name prefix can be applied as clue words or phrases to such processes. In this paper, the name prefix discovering framework is proposed for collecting the integrated researcher corpus from various data sources and extracting name prefix patterns. Four main functions of the proposed framework are collecting data from data sources, tagging entities, preprocessing the researcher’s names, and finding the pattern of the personal name prefix. In this work, six data sources are gathered and ten entities related to the research domain are focused. The preprocessing data uses three sub-processes to provide the researcher’s name. The result shows that the 408 personal name prefixes are extracted. Moreover, the API development for extracting a person or researcher’s name is implemented using a Flask Python framework. The output of this work can be used to support the researcher’s name identification from the integrated researcher corpus.
在信息抽取中,人名是抽取的重要命名实体之一,用于问答和总结任务。然而,由于从新闻、事件和研究人员语料库等在线公共数据源中存在几种人名的书写模式,人名的边界仍然是模糊的。为了提取、识别和统一人名,发现姓名前缀可以作为线索词或短语应用于这些过程。本文提出了一个名称前缀发现框架,用于从各种数据源中收集集成研究者语料库并提取名称前缀模式。该框架的四个主要功能是:从数据源中收集数据、标记实体、对研究人员姓名进行预处理以及查找个人姓名前缀的模式。在这项工作中,收集了六个数据源,并集中了与研究领域相关的十个实体。预处理数据使用三个子过程来提供研究人员的姓名。结果表明,提取了408个个人姓名前缀。此外,用于提取个人或研究人员姓名的API开发是使用Flask Python框架实现的。这项工作的输出可用于支持从集成的研究人员语料库中识别研究人员的姓名。
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引用次数: 0
Solar Customer Detection based on Power Consumption Patterns 基于电力消耗模式的太阳能客户检测
Ronnarong Dusitakorn, Sasiporn Usanavasin, W. Kongprawechnon
Nowadays, solar photovoltaic (PV) systems are rapidly growing worldwide. The utility needs to grasp the changing trends for power system planning, and penalize an illegal installation solar system in order to prevent impacts on the grid. Therefore, this paper aims to detect a solar customer from weekly consumption patterns by three classification algorithms: Logistic regression, cosine similarity and K-nearest neighbors. Furthermore, the clustering methods, K-means and Density-based spatial clustering of applications with noise (DBSCAN), are utilized for similarity grouping, and computational cost reduction with the two stage clustering technique. The study has been conducted with the non-resident customers in Thailand, the classification results are discussed.
目前,太阳能光伏(PV)系统在全球范围内迅速发展。公用事业公司需要把握电力系统规划的变化趋势,并对非法安装太阳能系统进行处罚,以防止对电网造成影响。因此,本文旨在通过三种分类算法从每周消费模式中检测太阳能客户:逻辑回归,余弦相似度和k近邻。利用K-means聚类方法和基于密度的带噪声应用空间聚类方法(DBSCAN)进行相似性分组,并利用两阶段聚类技术降低计算成本。对泰国非居民客户进行了研究,并对分类结果进行了讨论。
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引用次数: 0
Statistical Analysis with Prediction Models of User Satisfaction in Software Project Factors 软件项目因素中用户满意度预测模型的统计分析
Katawut Kaewbanjong, Sarun Intakosum
We analyzed a volume of software project data and found significant user satisfaction in several software project factors. statistical significance A analysis (logistic regression) a collinearity analysis and determined the significance factors from a group of 71 pre-defined factors from 191 software projects in ISBSG Release 12. Eight prediction models were used to test the prediction potential of these factors: Neural network, k-NN, Naïve Bayes, Random forest, Decision tree, Gradient boosted tree, linear regression and logistic regression prediction model. Fifteen pre-defined factors were significant in predicting user satisfaction: client-server, personnel changes, total defects delivered, project inactive time, industry sector, application type, development type, how methodology was acquired, development techniques, decision making process, intended market, size estimate approach, size estimate method, cost recording method, and effort estimate method. They provided 82.71% prediction accuracy when used with a neural network prediction model. These findings may directly benefit software development managers.
我们分析了大量的软件项目数据,并在几个软件项目因素中发现了显著的用户满意度。一种分析(逻辑回归)共线性分析,并从ISBSG第12版中191个软件项目的71个预定义因素中确定了显著性因素。采用神经网络、k-NN、Naïve贝叶斯、随机森林、决策树、梯度提升树、线性回归和逻辑回归等8种预测模型来测试这些因素的预测潜力。15个预先定义的因素在预测用户满意度方面是重要的:客户端-服务器、人员变更、交付的总缺陷、项目不活动时间、工业部门、应用程序类型、开发类型、如何获得方法论、开发技术、决策制定过程、预期市场、规模估计方法、规模估计方法、成本记录方法和工作量估计方法。与神经网络预测模型结合使用,预测准确率为82.71%。这些发现可能直接使软件开发经理受益。
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引用次数: 3
An Enhanced Measurement Circuit for Piezoresistive Pressure Sensor Array 一种压阻式压力传感器阵列的增强测量电路
Pattawut Manapongpun, Dahmmaet Bunnjaweht
A measurement approach of resistive sensor arrays has posed more obstacles than in single point resistive sensors. The effect of a crosstalk current in the array is the main factor that results in an inaccurate resistance scanning. In the application of pressure sensors, the presence of crosstalk current will cause ghost images on the area where no actual force is exerted onto the sensor array. In this paper, the enhanced measurement circuit has been specifically designed based on the zero potential circuit method to overcome the crosstalk error for improved accuracy. PSPICE simulation results on the 5×5 resistive array showed improved accuracy compared to the previous voltage dividing measurement approach, with the error reducing from 12.987% to 1.191%.
电阻式传感器阵列的测量方法比单点电阻式传感器存在更多的障碍。阵列中串扰电流的影响是导致电阻扫描不准确的主要因素。在压力传感器的应用中,串扰电流的存在会在没有实际力施加到传感器阵列上的区域产生鬼影。本文在零电位电路法的基础上专门设计了增强测量电路,克服串扰误差,提高了测量精度。在5×5电阻阵列上的PSPICE仿真结果表明,与之前的分压测量方法相比,精度得到了提高,误差从12.987%减小到1.191%。
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引用次数: 3
期刊
2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)
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