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2014 The 1st International Conference on Information Technology, Computer, and Electrical Engineering最新文献

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Very high throughput WLAN system for ultra HD 4K video streaming 超高清4K视频流的高吞吐量WLAN系统
W. Syafei, M. Kurosaki, H. Ochi
We have been developing a very high throughput WLAN system based on IEEE802.11ac's criteria. It combines MIMO and OFDM technology to provide throughput over 1 Gbps for 150 feet propagation distance by using 80 MHz of bandiwdth on 5 GHz frequency band. 4 by 5 antennas MIMO is set to get 2nd-order diversity gain to maintain high throughput and performance. Greenfield preamble with novel phase rotation is employed to mitigate the overhead problem while reducing the peak to average power ratio of the signals. Run test to broadcast the ultra high definition video which resolution 4096 × 1714 pixels/frame with 30 frame/second under in-door channel model demonstrates an excellent performance of the developed system.
我们一直在开发基于IEEE802.11ac标准的高吞吐量WLAN系统。它结合了MIMO和OFDM技术,通过在5ghz频段上使用80mhz的带宽,为150英尺的传播距离提供超过1gbps的吞吐量。4 × 5天线MIMO被设置为获得二阶分集增益,以保持高吞吐量和性能。采用新颖的相位旋转格林菲尔德前导来缓解开销问题,同时降低了信号的峰值与平均功率比。在室内信道模式下以30帧/秒的速度播放分辨率为4096 × 1714像素/帧的超高清视频,验证了系统的良好性能。
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引用次数: 0
ANFIS application for calculating inverse kinematics of programmable universal machine for assembly (PUMA) robot 应用ANFIS计算可编程通用装配机(PUMA)机器人的运动学逆解
Hugo Adeodatus Hendarto, Munadi, J. Setiawan
This paper focused on the robot arm's kinematics problem or the connection between angle in each joint and the end-effector's position.f Forward kinematics problem will be deduced using D-H (Denavit- Hartenberg) parameter method. The inverse kinematics problem will be solved using ANFIS (Adaptive Neuro-Fuzzy Inference System) instead of calculating the solution. ANFIS is a feature in MATLAB using ANFIS toolbox. PUMA 560 robot arm virtual model is used in this paper. Three ANFIS training conditions are made to test the influence of training conditions with the result's performance. The difference between end effector's position that using ANFIS and from calculation in forward kinematics will be calculated to test the end effector's position error. By making ANFIS solutions with three different MFs (Membership Functions), influence of MF number are known. With more MF will decrease the position's error. The most MF in this paper is 10 MFs resulting position error by 27.974mm.
本文主要研究机械臂的运动学问题,即各关节角度与末端执行器位置之间的关系。f采用D-H (Denavit- Hartenberg)参数法推导正运动学问题。逆运动学问题将使用ANFIS(自适应神经模糊推理系统)来解决,而不是计算解。ANFIS是MATLAB中使用的一个特性ANFIS工具箱。本文采用PUMA 560机器人手臂虚拟模型。设计了三种ANFIS训练条件,测试了训练条件对结果性能的影响。利用ANFIS计算的末端执行器位置与正运动学计算的位置之差来测试末端执行器的位置误差。通过三种不同隶属函数(MF)的ANFIS解,了解了MF数的影响。增大MF会减小位置误差。本文的最大MF为10 MF,导致位置误差27.974mm。
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引用次数: 8
Comparison of three back-propagation architectures for interactive animal names utterance learning 交互式动物名称话语学习的三种反向传播架构的比较
Ajub Ajulian Zahra Macrina, A. Hidayatno
English language is interesting for native speaker but there are many difficulties due to pronunciation. In order to facilitate for beginner to learn how to appropriately utter English word, we developed interactive learning program based on speech recognition. This paper investigates performance of three back-propagation neural network architectures with different hidden layers, e.g. 3, 4, and 5. The neural network is used to implements a speech recognition system to make interactive animal names utterance learning. The performance indicator that used in this study is number of epoch, training time, and mean square error (mse). The train dataset consist of 1, 2, and 3 syllables of animal names. The more hidden layer causes the longer training time but the smaller of the mse. Related to the number of epochs for training 1 and 2 syllables have a tendency that more hidden layers will be less the epoch, but this is not the case for training 3 syllables.
英语对以英语为母语的人来说很有趣,但由于发音有很多困难。为了方便初学者学习如何正确地发英语单词,我们开发了基于语音识别的交互式学习程序。本文研究了三种具有不同隐藏层的反向传播神经网络结构的性能,例如3、4和5层。利用神经网络实现语音识别系统,进行交互式动物名称的语音学习。本研究中使用的性能指标是epoch数、训练时间和均方误差(mse)。训练数据集由动物名称的1、2和3个音节组成。隐藏层越多,训练时间越长,而mse越小。与训练1和2个音节的epoch数量相关的是,隐藏层越多,epoch越少,但训练3个音节的情况并非如此。
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引用次数: 0
Analytical hierarchy process for land suitability analysis 土地适宜性分析的层次分析法
Rahmat Sholeh, F. Agus, H. R. Hatta, Tarbiyatul Munawwarah
In the Agricultural Development Zone in East Kalimantan, inefficient land use is continuing to occur. Many of land utility planned by individual or by group of local farmers still using traditional way, in identification of suitable crops for their farm. The method used is based on their experience and their ancestor guidance. It is important to formulate scientific method that can help to recommend suitable crops for specific land in order to help reduce inefficient use of land used for farming. This study introduce the concept of Analytical Hierarchy Process (AHP) in analytical study of land suitability, thus can help decision-makers to determine suitable crops for certain area. Using AHP to determine the best crop from four alternatives that used in this study, the result obtained from this study has shown that Cassava is the most suitable crop for the farm land that analyzed in this study, followed by Soybean on the second place.
在东加里曼丹的农业开发区,土地利用效率低下的现象仍在继续。许多土地利用计划由个人或团体的当地农民仍然使用传统的方式,以确定适合自己的农场作物。所使用的方法是基于他们的经验和他们的祖先的指导。重要的是制定科学的方法,可以帮助推荐适合特定土地的作物,以帮助减少农业用地的低效利用。本研究将层次分析法(AHP)的概念引入土地适宜性分析研究中,从而帮助决策者确定特定区域的适宜作物。采用层次分析法从本研究中使用的四种替代作物中确定最佳作物,本研究结果表明,木薯是本研究分析的农田最适合的作物,其次是大豆。
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引用次数: 7
Management and retrieval of cultural heritage multimedia collection using ontology 基于本体的文物多媒体馆藏管理与检索
A. Rubhasy, A. A. G. Yudhi Paramartha, I. Budi, Z. Hasibuan
Cultural heritage objects can be found everywhere, whether in heritage institutions (i.e. Library, Archive and Museum) or other sources. Since the cultural heritage has outstanding values to mankind, it is important for us to preserve and benefited its values. The challenging task is that the heritage collection is provided in digital format; have different type of media (i.e. text, image, video, audio and animation); and stored in scattered locations. This paper introduces ontology-based approach in management and retrieval cultural heritage multimedia collection. The goal is to enable the integration of different type of heritage media and to retrieve relevant heritage media to a given query in any type of media. In order to do this, the cultural heritage ontology is developed based on the World Heritage Classification provided by UNESCO/WHC. The ontology also included media classification to accommodate the heterogeneous nature of multimedia collection. The retrieval task is done using SPARQL query language. The result shows that all type of relevant heritage media can be retrieved and the number of retrieved non-relevant media is relatively low.
文化遗产随处可见,无论是在遗产机构(即图书馆、档案馆和博物馆)还是在其他来源。由于文化遗产对人类具有突出的价值,对我们来说,保护和受益它的价值是很重要的。具有挑战性的任务是文物收藏以数字格式提供;拥有不同类型的媒体(即文本、图像、视频、音频和动画);储存在分散的地方。本文介绍了基于本体的文物多媒体馆藏管理与检索方法。目标是实现不同类型的遗产媒体的集成,并在任何类型的媒体中检索相关的遗产媒体到给定的查询。为此,以联合国教科文组织/世界遗产委员会提供的《世界遗产分类》为基础,建立了文化遗产本体。本体还包括媒体分类,以适应多媒体集合的异构性质。检索任务是使用SPARQL查询语言完成的。结果表明,所有类型的相关遗产媒体都可以被检索到,而检索到的非相关媒体数量相对较少。
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引用次数: 4
Study of environmental condition using wavelet decomposition based on infrared image 基于红外图像的环境条件小波分解研究
S. R. Sulistiyanti, M. Komarudin, L. Hakim, A. Yudamson
In this paper, we report our experiment about wavelet decomposition for study environmental condition based on infrared images. Infrared images acquired by consumer digital camera, after replacing the infrared stoping filter with filter SRS, and the images captured sequentially every two hours (from 06:00-16:00). The result of this research is the increasing air pollution characterized using wavelet decomposition by increasing index value from 0-3 and amount of white spots about 60% (from 5%-65%). Finally wavelet decomposition was made to estimate the environmental condition, especially air pollution, based on infrared image.
本文报道了基于红外图像的小波分解研究环境条件的实验。消费级数码相机采集的红外图像,用滤光片SRS更换红外采场滤光片后,每两小时(06:00-16:00)顺序采集的图像。本研究的结果是用小波分解表征空气污染的增加,指数值从0-3增加,白点数量约为60%(从5%-65%)。最后利用红外图像进行小波分解,对环境状况特别是大气污染状况进行估计。
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引用次数: 3
Design analysis and optimization of ground grid mesh of extra high voltage substation using an intelligent software 利用智能软件对特高压变电站地网进行设计分析与优化
M. U. Aslam, Muhammad Usman Cheema, Muhammad Bilal Cheema, Muhammad Samran
The 500KV substations are important for power system in Pakistan. They cover large area meeting the power requirement of whole power system. The ground grid system of substation has to be carefully analyzed in order to protect the grid, keep the system functional. A practical 500KV substation is chosen for this purpose i.e. RAWAT Grid Station. The grounding system of substation is studied in detail along with practical data collection for the purpose of analysis. It is important to mention about latest IEEE 81 2013 methods which have been adopted during data collection phase. The ETAP software version 12 is used for modeling and analysis of network. The Ground Grid System (GGS) module included in latest version of ETAP i.e. ETAP 12 is used for analysis. Firstly modeling is done in ETAP-12, afterwards analysis is performed on actual ground mesh using IEEE 80-2000 improved methods to evaluate step potential, ground potential rise, ground resistance, short term temperature rise of conductors /rods & touch potential. The shortcomings in existing grid mesh are highlighted and remedial actions are suggested to rectify the problems. The extension is planned in the substation regarding installation of new power transformer which will result to in rise of overall substation fault level. The increase in fault level is considered in one case study and possible solution is provided. A new ground mesh is also designed for this area which will serve as a model for future substations which will be designed in this particular area keeping in view essential parameters. A new ground mesh is also designed for 750KV substation, as it will be part of our national grid in near future as feasibility study is ongoing in NTDC Pakistan for the establishment of first 750KV substation in this area. The variation in ground grid resistance and various safety parameters with the change in ground grid mesh shape, depth and size is explained by the help of results obtained through Case studies.
500KV变电站是巴基斯坦电力系统的重要组成部分。它们覆盖面积大,满足整个电力系统的功率需求。对变电站地网系统进行认真的分析,以保护电网,保持系统的正常运行。为此选择了一个实用的500KV变电站,即RAWAT电网站。对变电站的接地系统进行了详细的研究,并收集了实际数据进行分析。重要的是要提到在数据收集阶段采用的最新IEEE 81 2013方法。采用ETAP软件12版进行网络建模和分析。使用最新版本ETAP即ETAP 12中包含的地网系统(GGS)模块进行分析。首先在ETAP-12中进行建模,然后使用IEEE 80-2000改进方法对实际地网格进行分析,评估步进电位、地电位上升、地电阻、导体/棒的短期温升和接触电位。指出了现有网格存在的不足,并提出了相应的整改措施。由于新电力变压器的安装,变电站计划进行扩建,这将导致变电站整体故障水平上升。在一个案例研究中考虑了故障级别的增加,并提供了可能的解决方案。还为该地区设计了一个新的地面网格,它将作为未来在该特定地区设计的变电站的模型,并保持基本参数。此外,还为750千伏变电站设计了一个新的地面网格,因为它将在不久的将来成为我们国家电网的一部分,因为巴基斯坦国家电力公司正在进行在该地区建立第一个750千伏变电站的可行性研究。通过实例分析,解释了地网网格形状、深度和尺寸的变化对地网电阻和各安全参数的影响。
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引用次数: 8
Analysis of protection failure effect and relay coordination on reliability index 保护失效效应及继电器配合对可靠性指标的影响分析
I. G. N. Satriyadi Hernanda, Evril N. Kartinisari, D. A. Asfani, D. Fahmi
A power system must be able to deliver the electric power even though some disturbance occurs. The failure of the protection system to localized fault can cause catastrophic failure of a system or blackout. In this research, an algorithm based on Monte Carlo simulations is proposed to obtain the reliability index that considers the overcurrent relay coordination varied by time settings of overcurrent relay. The reliability index consists of SAIFI, SAIDI, and CAIDI. Monte Carlo is a simulation procedure to obtain the reliability index by using a random number of generation and a simulated through a program. The results from Monte Carlo simulations is to determine the disturbance in a transmission line, the overcurrent relay that works at the time, and the reliability index on consumer that the parameters is derived from the amount of the failure rate and the rate of improvement of the line and transformer. The proposed method is compared to commercial software that is ETAP®. The results of ETAP simulation only count the failures in transformers, and the outcome of SAIFI and SAIDI is 0.013 and 0.1819. Other ways on the Monte Carlo simulation to determine disturbances in line with the generation of random numbers on the 2000 iteration, value of SAIFI and SAIDI is 0.0139 and 0.2697. The strength points of this study are implementing and analyzing the method into real system in Indonesia.
电力系统必须能够在发生扰动时仍能输送电力。保护系统局部故障的失效会引起系统的灾难性故障或停电。本研究提出了一种基于蒙特卡罗仿真的算法来获得考虑过流继电器配合度随过流继电器时间设定变化的可靠性指标。可靠性指标包括SAIFI、SAIDI和CAIDI。蒙特卡罗仿真程序是利用随机数生成可靠度指标,并通过程序进行仿真。蒙特卡罗模拟的结果是确定输电线路中的扰动,同时工作的过流继电器,以及用户的可靠性指标,这些参数是由线路和变压器的故障率和改进率得出的。所提出的方法与商业软件ETAP®进行了比较。ETAP仿真结果仅计算变压器故障,SAIFI和SAIDI的结果分别为0.013和0.1819。其它方法在蒙特卡罗模拟上确定扰动符合随机数的生成,在2000次迭代上SAIFI和SAIDI的值分别为0.0139和0.2697。本研究的优势在于将该方法应用于印度尼西亚的实际系统中进行实施和分析。
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引用次数: 1
Aggressive web application honeypot for exposing attacker's identity 侵略性的web应用程序蜜罐暴露攻击者的身份
S. Djanali, F. X. Arunanto, B. Pratomo, Abdurrazak Baihaqi, H. Studiawan, A. M. Shiddiqi
Attackers are most likely to exploit invalidated and unsanitized user input with several attacks such as cross-site scripting (XSS) or SQLinjection. Many methods were proposed to prevent those attacks. Some of them were created to learn about pattern and behavior of the attacker. That is honeypot. Honeypot is classified into two types based on the simulation that honeypot can do : low interaction and high interaction. In this paper, we propose a low-interaction honeypot for emulating vulnerabilities that can be exploited using XSS and SQL injection attacks. But this honeypot not only records attacker's request, but also try to expose attacker identity by using some browser exploitation techniques. Some attackers would use techniques to hide their identity, thus they couldn't be tracked. Our proposed honeypot was trying to overcome this problem by giving them malicious JavaScript codes. The malicious JavaScript codes will be run when an attacker open the honeypot's website. We have conducted several test to see how our honeypot's performance. Our honeypot could catch more useful information about the HTTP request than popular web-based honeypot, Glastopf. Moreover, there were attacker's social media accounts caught by using LikeJacking technique although they might have used proxy or TOR to hide their identity.
攻击者很可能利用无效和未经处理的用户输入进行多种攻击,例如跨站点脚本(XSS)或SQLinjection。人们提出了许多方法来防止这些攻击。其中一些是为了了解攻击者的模式和行为而创建的。这就是蜜罐。根据蜜罐所能进行的仿真,将蜜罐分为低交互和高交互两种类型。在本文中,我们提出了一个低交互蜜罐来模拟可以被XSS和SQL注入攻击利用的漏洞。但是这个蜜罐不仅记录了攻击者的请求,而且还尝试使用一些浏览器攻击技术来暴露攻击者的身份。一些攻击者会使用技术来隐藏他们的身份,这样他们就无法被跟踪。我们提出的蜜罐试图通过提供恶意JavaScript代码来克服这个问题。恶意JavaScript代码将在攻击者打开蜜罐网站时运行。我们进行了几次测试,看看我们的蜜罐的性能如何。我们的蜜罐可以比流行的基于web的蜜罐Glastopf捕获更多关于HTTP请求的有用信息。此外,尽管攻击者可能使用代理或TOR隐藏了自己的身份,但他们的社交媒体账户还是通过使用LikeJacking技术被发现的。
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引用次数: 31
Period information deviation on the segmental sinusoidal model 分段正弦模型的周期信息偏差
F. B. Setiawan
Speech signal can be modeled by sinusoidal model. On the sinusoidal model, there are many kinds for representing the signal. One of model is Segmental Sinusoidal model. The segmental sinusoidal model is an approximation method based on sinusoidal model for speech signal, especially for periodic detection. The periodic signal can be decomposed by infinite sinusoidal signal with combination of amplitude, frequency and phase. After the signal is decomposed, parameter will be quantized. The proposed quantization method in this paper is sampling signal on big part between minimum and maximum part over observation block. Some parameters of speech signal are detected. The useful parameters are peaks and period between consecutive peaks. Period information obtained from this quantization tends to different than the original, In this paper, we show the experimental results that there are many differences between period information on encoder side with the decoder side. It caused by quantization error on period information and quantization error on the codebook design. Effect of differences is degradation of signal quality, especially on frequency signal accuracy. On this paper, deviation of the reconstructed signal from original signal will be evaluated. Deviation from the original signals means that some error occur on period quantization.
语音信号可以用正弦模型来建模。在正弦模型上,有很多种表示信号的方法。其中一种模型是分段正弦模型。分段正弦模型是一种基于正弦模型的语音信号逼近方法,尤其适用于语音信号的周期检测。周期信号可以由幅值、频率和相位组合的无限正弦信号进行分解。信号被分解后,参数将被量化。本文提出的量化方法是对观测块上最小和最大部分之间的大部分信号进行采样。检测语音信号的一些参数。有用的参数是峰值和连续峰值之间的周期。这种量化得到的周期信息往往与原来的周期信息不同,在本文中,我们展示了实验结果,编码器侧的周期信息与解码器侧的周期信息存在许多差异。它是由周期信息的量化误差和码本设计的量化误差引起的。差异的影响是信号质量的下降,特别是对频率信号精度的影响。本文将评估重构信号与原始信号的偏差。与原始信号的偏差意味着周期量化出现了一定的误差。
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引用次数: 2
期刊
2014 The 1st International Conference on Information Technology, Computer, and Electrical Engineering
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