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2013 International Conference on Information Technology and Electrical Engineering (ICITEE)最新文献

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Design and implementation of gaze tracking headgear for Nvidia 3D Vision® Nvidia 3D Vision®凝视追踪头戴装置的设计与实现
S. Wibirama, K. Hamamoto
The usage of Nvidia 3D Vision® is increasing rapidly, ranging from gaming to research purposes. However, researchers in human computer interaction and virtual reality are constrained by hardware configuration since current commercial gaze tracking systems are not specifically designed to be used with Nvidia 3D Vision®. In this paper, we present a novel prototype of gaze tracking headgear which can be used appropriately with Nvidia 3D Vision®. We explain design consideration and detail implementation of our gaze tracking headgear. We also evaluate our gaze tracking system by measuring gaze accuracy on stereoscopic display. Experimental result shows that the average gaze estimation error is less than one degree visual angle.
Nvidia 3D Vision®的使用正在迅速增加,从游戏到研究目的。然而,人机交互和虚拟现实领域的研究人员受到硬件配置的限制,因为目前的商业凝视跟踪系统并不是专门为Nvidia 3D Vision®设计的。在本文中,我们提出了一种新的凝视跟踪头戴装置原型,可以与Nvidia 3D Vision®适当使用。我们解释了我们的凝视跟踪头戴设备的设计考虑和细节实现。我们还通过测量立体显示器上的凝视精度来评估我们的凝视跟踪系统。实验结果表明,该算法的平均注视估计误差小于1度视角。
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引用次数: 6
Barker code radar simulation for target range detection using software defined radio 巴克码雷达模拟目标距离探测使用软件定义无线电
Jumail Soba, A. Munir, A. B. Suksmono
This paper present simulation of radar using Barker code signal to provide pulse compression. Barker code is the most well-known phase coding for pulse compression techniques. Pulse compression techniques has been known can provide solution for range resolution and detection range problem. Radar using Barker code simulated using software-defined radio, GNU Radio. Using GNU Radio give flexibility in operation, lower costs, faster in the realization of the design and easier to use. Radar signal processing for received signal performed on MATLAB. Radar used to detect range of the target which simulated by delaying the signal. This radar using Barker code length of 13. PRI 1.3×10-2 using for this radar, which give maximum unambiguous range 1950 km. Barker code signal of transmitter delayed 3000, 5000 and 10000 samples for simulation of target. Radar can detect the target as seen from the results of the signal processing done on matlab.
本文介绍了利用巴克码信号进行脉冲压缩的雷达仿真。巴克码是脉冲压缩技术中最著名的相位编码。脉冲压缩技术可以为距离分辨率和探测距离问题提供解决方案。雷达使用巴克代码模拟,使用软件定义无线电,GNU无线电。使用GNU Radio使操作更灵活,成本更低,设计实现更快,使用更方便。雷达信号处理对接收到的信号在MATLAB上进行。雷达用来探测目标的距离,通过延迟信号模拟目标的距离。这个雷达使用巴克码长度为13。PRI 1.3×10-2用于该雷达,其最大无歧义范围为1950公里。发射机的巴克码信号延迟3000、5000和10000个样本用于模拟目标。雷达可以探测到目标,从matlab对信号进行处理的结果可以看出。
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引用次数: 7
Rapid nitrogen determination of soybean leaves using mobile application 移动应用快速测定大豆叶片氮含量
M. A. Adhiwibawa, Christian Tantono, K. Prilianti, M. N. U. Prihastyanti, L. Limantara, T. H. Brotosudarmo
Nitrogen is one of the important nutrients elements for the growth of soybean plants. In this paper we propose mobile application that can be used nondestructively to estimate the nitrogen content of soybean leaves. We named this software “Mata Daun”. The primary concept of this software is to relate the RGB (Red, Green, Blue) value of the captured soybean image with its nitrogen content. Furthermore, the captured image is processed into Enhanced Color Visibility (ECV) index using digital image processing method for the ease of software algorithm process. Calibration process and field trial were conducted to found the relation between ECV index and soybean leaves nitrogen content. The calibration result showed that the nitrogen readings by this application had a fairly strong relationship (R2 =0.70) with the soybean leaves nitrogen content (Agriexpert CCN-6000 readings). The field test result also gave the same strong positive relationship between predicted and real soybean leaves nitrogen content (R2 =0.93).
氮是大豆生长的重要营养元素之一。在本文中,我们提出了一种可以用于无损估计大豆叶片氮含量的移动应用程序。我们将这个软件命名为“Mata Daun”。该软件的主要概念是将捕获的大豆图像的RGB(红、绿、蓝)值与其氮含量联系起来。此外,为了便于软件算法处理,采用数字图像处理方法将捕获的图像处理成增强颜色可见度(ECV)指数。通过标定过程和田间试验,确定了ECV指数与大豆叶片含氮量的关系。校准结果表明,该应用程序的氮读数与大豆叶片氮含量(Agriexpert CCN-6000读数)具有相当强的相关性(R2 =0.70)。田间试验结果表明,预测的大豆叶片氮含量与实际的大豆叶片氮含量呈正相关(R2 =0.93)。
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引用次数: 10
Design of matching impedance for ultra wideband partial discharge detection 超宽带局部放电检测匹配阻抗设计
P. Emeraldi, U. Khayam
Partial Discharge (PD) detection in the ultra wideband (UWB) at frequency from 100 kHz up to and above 1 GHz give some benefits especially for nature observation of PD pulse shape and frequency spectrum. One of the methods to measure the UWB PD signal is a method of impedance matched. Impedance of 50 ohm corresponding to the characteristic impedance of the coaxial cable and the internal impedance of oscilloscope is used as a coupling device to maximize the power transfer of PD current so that it can obtain real PD signals. This paper designs a matching impedance which composed from attenuator as detecting impedance and UWB amplifier as signal amplifier and evaluates the performance using S-parameter value. The matching impedance has good reflection loss below ~10 dB over low frequencies up to 3 GHz frequency bandwidth, with a minimum value of S11 is ~28.8 dB at a frequency of 322 MHz and ~18.3 dB at 3 GHz. The input impedance and output impedance values are close to 50 ohm over the frequency bandwidth. The gain (S21) of the impedance matching circuit is 14 dB at a frequency close to DC and down to a 6 dB at a frequency of 100 MHz and have flat value of 6 dB up to 3 GHz frequency. From the simulation results, the designed matching impedance has frequency bandwidth from DC up to 3 GHz that can be implemented as a coupling device for UWB PD detection.
在100 kHz至1 GHz及以上的超宽带(UWB)范围内进行局部放电(PD)检测具有一定的优势,特别是对于局部放电脉冲形状和频谱的自然观测。测量超宽带PD信号的方法之一是阻抗匹配法。采用同轴电缆特性阻抗与示波器内部阻抗相对应的50欧姆阻抗作为耦合装置,最大限度地实现PD电流的功率传输,从而获得真实的PD信号。本文设计了一种由衰减器作为检测阻抗,超宽带放大器作为信号放大器组成的匹配阻抗,并用s参数值对其性能进行了评价。匹配阻抗在3ghz频宽以内具有良好的低频~10 dB反射损耗,在322 MHz频率下S11最小值为~28.8 dB,在3ghz频率下最小值为~18.3 dB。输入阻抗和输出阻抗值在带宽范围内接近50欧姆。阻抗匹配电路的增益(S21)在接近直流频率时为14 dB,在100 MHz频率下为6 dB,在3ghz频率下为6 dB的平坦值。仿真结果表明,所设计的匹配阻抗的频率带宽从直流到3ghz,可以作为UWB PD检测的耦合器件实现。
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引用次数: 16
SARIMA (Seasonal ARIMA) implementation on time series to forecast the number of Malaria incidence 采用SARIMA (Seasonal ARIMA)对时间序列进行疟疾发病数预测
A. E. Permanasari, Indriana Hidayah, I. A. Bustoni
The usefulness of forecasting method in predicting the number of disease incidence is important. It motivates development of a system that can predict the future number of disease occurrences. Fluctuation analysis of forecasting result can be used to support the making of policy from the stake holder. This paper analyses and presents the use of Seasonal Autoregressive Integrated Moving Average (SARIMA) method for developing a forecasting model that able to support and provide prediction number of diasease incidence in human. The dataset for model development was collected from time series data of Malaria occurrences in United States obtained from a study published by Centers for Disease Control and Prevention (CDC). It resulted SARIMA (0,1,1)(1,1,1)12 as the selected model. The model achieved 21,6% for Mean Absolute Percentage Error (MAPE). It indicated the capability of final model to closely represent and made prediction based on the Malaria historical dataset.
预测方法在预测疾病发病率方面的有效性是很重要的。它促使开发一种能够预测未来疾病发生数量的系统。预测结果的波动分析可以为利益相关者的政策制定提供支持。本文分析并介绍了利用季节自回归综合移动平均(SARIMA)方法建立一个能够支持和提供人类疾病发病率预测数的预测模型。用于模型开发的数据集是从美国疾病控制和预防中心(CDC)发表的一项研究中获得的美国疟疾发病率的时间序列数据中收集的。结果SARIMA(0,1,1)(1,1,1)12为所选模型。该模型的平均绝对百分比误差(MAPE)达到21.6%。结果表明,最终模型能够较好地表示疟疾历史数据并进行预测。
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引用次数: 58
Improved Thai text detection from natural scenes 改进了自然场景的泰语文本检测
K. Woraratpanya, Pimlak Boonchukusol, Y. Kuroki, Yasushi Kato
Thai text detection from natural scenes is still a challenging task for language translation applications, since there are many unsolved issues. Furthermore, the existing related works cannot completely detect Thai text. The main reason is that Thai text layout has vowels and tonal marks that differ from other languages. This paper proposes an approach to detect Thai text from natural scenes. The approach consists of two main procedures. (i) Fast boundary clustering algorithm decomposes scene features into multilayers, so that it is faster and easier to analyze Thai text characters. (ii) Modified connected component analysis method is applied to such scene features in order to detect Thai text boundaries. Based on 150 test images with 4,920 characters, the experimental results demonstrate that the proposed approach achieves the high average precision and recall, 0.80 and 0.90.
对于语言翻译应用来说,从自然场景中检测泰语文本仍然是一项具有挑战性的任务,因为有许多尚未解决的问题。此外,现有的相关工作不能完全检测泰文。主要原因是泰语文本布局的元音和音调标记与其他语言不同。本文提出了一种从自然场景中检测泰语文本的方法。该方法包括两个主要步骤。(i)快速边界聚类算法将场景特征分解成多层,从而更快更容易地分析泰文文本字符。(ii)将改进的连通分量分析方法应用于这些场景特征,以检测泰文文本边界。基于150幅4,920个字符的测试图像,实验结果表明,该方法达到了较高的平均准确率和召回率,分别为0.80和0.90。
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引用次数: 10
Generating customized web search result through community driven search engine 通过社区驱动的搜索引擎生成定制的网络搜索结果
B. Hantono, Guntur Dharma Putra
These days, the growth of web has led it to a big source of information. Web search engine plays an important role of searching desired information from this enormous web. However, search engine provides the same result independently to the user while actually each user has different preference. In this paper, we present a novel method of customized web search result generation to provide a better result according to community's preference. We benefit from proxy servers, which are widely used in a community network to reduce bandwidth needs. Proxy servers are, actually, providing the user preference within its access log that contains accessed URLs. Instead of web crawler, we will use this logs, which is always updated as users browse the web through this proxy. This would be the base of our customized web search. As the proxy log only covers URL list, we still need to crawl the information contained in an URL. When the crawling method has completed, document vector is created to make those data to be more machine friendly. Eventually, searching process is carried out by utilizing the vector space model.
如今,网络的发展使其成为一个巨大的信息来源。网络搜索引擎在从庞大的网络中搜索所需信息方面起着重要的作用。然而,搜索引擎独立地向用户提供相同的结果,而实际上每个用户都有不同的偏好。本文提出了一种新的自定义web搜索结果生成方法,可以根据用户的偏好提供更好的搜索结果。我们受益于代理服务器,它广泛用于社区网络以减少带宽需求。实际上,代理服务器在其包含访问url的访问日志中提供用户首选项。我们将使用此日志,而不是网络爬虫,当用户通过此代理浏览web时,该日志总是更新。这将是我们定制的网络搜索的基础。由于代理日志只覆盖URL列表,我们仍然需要抓取URL中包含的信息。当爬行方法完成后,将创建文档向量,使这些数据对机器更友好。最后利用向量空间模型进行搜索。
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引用次数: 0
A fixed backoff-time switching method for wireless mesh networks: Design and Linux implementation 一种无线网状网络的固定回断时间交换方法:设计与Linux实现
S. Sukaridhoto, N. Funabiki, Dadet Pramudihanto, Z. Arief
As a flexible and cost-efficient scalable Internet access network, we have studied architectures, protocols, and design optimizations of the Wireless Internet-access Mesh NETwork (WIMNET). WIMNET is composed of wirelessly connected access points (APs), where any host can basically access to the Internet through multihop communications between APs with IEEE 802.11 standard. In WIMNET, undesirable situations can often happen such that some links dominate the bandwidth while others become insufficient due to the limited shared bandwidth. However, the contention resolution mechanism using a random backoff-time in the CSMA/CA protocol of 802.11 standards is not sufficient for handling real-time traffic in multihop wireless communications. Previously, we have proposed the concept of the CSMA-based Fixed Backoff time Switching (CSMA-FBS) method for WIMNET to improve the performance by giving necessary link activation chances for multi-hop communications. We implemented our proposal on the QualNet simulator, and verify its effectiveness through simulations. In this paper, we present an implementation of the FBS method in Linux kernel to show its practicality and investigate the performance in a real network. Our design consists of implementations or modifications of the five programs: Kernel configuration, Debugfs, Minstrel, iw, and FBSdaemon.
作为一种灵活、经济、可扩展的互联网接入网,我们研究了无线互联网接入网状网(WIMNET)的体系结构、协议和设计优化。WIMNET是由无线连接的接入点(ap)组成的,任何主机基本上都可以通过ap之间的多跳通信与IEEE 802.11标准接入互联网。在WIMNET中,经常会出现一些链路占据带宽,而另一些链路由于共享带宽有限而不足的情况。然而,802.11标准的CSMA/CA协议中使用随机回退时间的争用解决机制不足以处理多跳无线通信中的实时流量。在此之前,我们提出了基于csma的WIMNET固定回退时间交换(CSMA-FBS)方法的概念,通过为多跳通信提供必要的链路激活机会来提高性能。我们在QualNet模拟器上实现了我们的提议,并通过仿真验证了它的有效性。本文给出了FBS方法在Linux内核中的实现,以展示其实用性,并对其在实际网络中的性能进行了研究。我们的设计由以下五个程序的实现或修改组成:Kernel configuration、Debugfs、Minstrel、iw和FBSdaemon。
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引用次数: 1
An analysis comparison of AODV UU and batmand performance for mobile ad-hoc network 移动自组网中AODV UU和batmand性能的分析比较
Muflich Putera Prathama, Istikmal, S. N. Hertiana
Nowadays, technology tends to be developed to wireless technology. One of factors affects that development is mobile capability offered by the system to users. One of current wireless technology is mobile ad-hoc network. Important feature of mobile ad-hoc network implementation is routing protocol such as AODV and BATMAN. Implementing AODV and BATMAN in real life is by using AODV UU and BATMAN Daemon. In this paper, four nodes are implemented to evaluate both routing protocols in mobile ad-hoc network. For mobile scenario, source node moves with velocity about three km/h back and forth to destination node. Sending and receiving files in system is using Distributed Internet Traffic Generator (DITG). Analyzed parameters in this system are average packets loss percentages, average throughput, and average jitter. Implementation of no movement scenario shows that average packets loss percentage ranges from 0% to 3.358%, average throughput ranges from 393.1821813 Kbps to 409.9955152 Kbps, and average jitter ranges from 0.00052182 s to 0.00604264 s. In addition, implementation of source node movement scenario shows that average packets loss percentage ranges from 0.002% to 4.276%, average throughput ranges from 386.6820413 Kbps to 409.8114591 Kbps, average jitter ranges from 0.00202616 s to 0.00609198 s.
如今,技术有向无线技术发展的趋势。影响开发的因素之一是系统向用户提供的移动能力。当前的无线技术之一是移动自组织网络。AODV和BATMAN等路由协议是移动自组网实现的重要特征。在现实生活中实现AODV和BATMAN是通过使用AODV UU和BATMAN Daemon。本文在移动自组织网络中实现了四个节点来评估这两种路由协议。对于移动场景,源节点以约3km /h的速度来回移动到目的节点。系统中文件的收发采用分布式网络流量发生器(DITG)。分析的参数包括平均丢包率、平均吞吐量和平均抖动。无移动场景实现的平均丢包率范围为0% ~ 3.358%,平均吞吐量范围为393.1821813 ~ 409.9955152 Kbps,平均抖动范围为0.00052182 ~ 0.00604264 s。此外,通过源节点移动场景的实现,平均丢包率在0.002% ~ 4.276%之间,平均吞吐量在386.6820413 ~ 409.8114591 Kbps之间,平均抖动在0.00202616 ~ 0.00609198 s之间。
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引用次数: 3
Performance evaluation of ZigBee-based wireless sensor network for monitoring patients' pulse status 基于zigbee的无线传感器网络监测患者脉搏状态的性能评价
M. Niswar, A. A. Ilham, E. Palantei, R. Sadjad, Andani Ahmad, A. Suyuti, Indrabayu, Z. Muslimin, Tadjuddin Waris, Puput Dani Prasetyo Adi
Recently, the wireless sensor network has been widely deployed for medical care purpose. We have developed a wireless sensor network that can monitor the patients' pulse status for triage purpose, so that a medical team can monitor remotely the health condition of patient and they can treat the patient based on severity of patients' health condition. We developed an electronic triage operating as a sensor node (SN) tagged in patient's arm. The SN consists of microcontroller ATmega328P, ZigBee and pulse sensor to detect patient's pulse. Operating as an electronic triage, the pulse rate from sensor is classified into three categories of severe conditions, i.e., major, minor, and normal status by the microcontroller in SN and sent to the coordinator node (CN) through ZigBee interface. Our system can be deployed in emergency room, triage room, pre/post-op surgery in hospital as well as in disaster area. This paper aims to evaluate the performance of the ZigBee-based wireless sensor network that we developed. We evaluate the effective distance between CN and SN to deliver patients' pulse rate via ZigBee as well as the effective number of SNs that can be accommodated by single CN. The experimental results shown that the effective distance between CN and SN to deliver the pulse rate data is less than 30 meters and the maximum number of SNs can be accommodated by a single CN is 3 (three) nodes.
近年来,无线传感器网络在医疗保健领域得到了广泛的应用。我们开发了一种无线传感器网络,可以监测患者的脉搏状态,用于分诊,这样医疗团队就可以远程监测患者的健康状况,并根据患者健康状况的严重程度对患者进行治疗。我们开发了一种电子分诊,作为一个传感器节点(SN)标签在患者的手臂上。SN由微控制器ATmega328P、ZigBee和脉搏传感器组成,用于检测患者的脉搏。来自传感器的脉冲速率作为电子分诊,由SN中的微控制器将其分为严重、轻微和正常三种严重状态,并通过ZigBee接口发送给协调节点(CN)。我们的系统可以部署在急诊室、分诊室、医院的术前/术后手术以及灾区。本文旨在评估我们开发的基于zigbee的无线传感器网络的性能。我们评估了通过ZigBee传输患者脉搏率的CN和SN之间的有效距离以及单个CN可以容纳的SN的有效数量。实验结果表明,CN与SN之间传输脉冲速率数据的有效距离小于30米,单个CN可容纳的最大SN数为3个节点。
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引用次数: 37
期刊
2013 International Conference on Information Technology and Electrical Engineering (ICITEE)
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