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Classification with missing data in a wireless sensor network 无线传感器网络中缺失数据的分类
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494352
Yuan Yuan Li, L. Parker
{"title":"Classification with missing data in a wireless sensor network","authors":"Yuan Yuan Li, L. Parker","doi":"10.1109/SECON.2008.4494352","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494352","url":null,"abstract":"We have developed a novel method to estimate missing observations in wireless sensor networks. We use a hierarchical unsupervised fuzzy ART neural network to represent the data cluster prototypes and describe missing input patterns based on the network. We then estimate missing inputs by a spatial-temporal imputation technique. Our experimental results show that our proposed approach performs better than nine other missing data imputation techniques including moving average and Expectation-Maximization (EM) imputation.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131760604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
A multi-tiered scheme for interference control in a wireless system 无线系统中用于干扰控制的多层方案
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494265
B. Kraimeche
{"title":"A multi-tiered scheme for interference control in a wireless system","authors":"B. Kraimeche","doi":"10.1109/SECON.2008.4494265","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494265","url":null,"abstract":"We analyze a scheme that combines ARQ, FEC, frequency hopping (FH) and traffic rate control to mitigate the effects of interference on the performance a fixed wireless system. ARQ is ineffective because of excessive retransmissions; FEC also becomes ineffective when excessive coding redundancy is required for adequate error correction. When interference is widespread across the channels, FH becomes ineffective as well. Additional interference control may therefore be needed. In this paper, we study two heuristic schemes that throttle the incoming traffic rate according to the level of interference in the transmission channels, where FH, ARQ and FEC are already employed. We analyze and compare the throughput, delay and loss of the two rate controls in combination with FEC and FH. The results show that by optimizing it with respect to a measure of power (throughput/delay), one of the schemes performs best across the load, and its performance can be further enhanced by FEC.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122616019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hierarchical architecture for a multi-rover system 多漫游车系统的分层结构
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494317
G. Skelton, Q. Pang
{"title":"Hierarchical architecture for a multi-rover system","authors":"G. Skelton, Q. Pang","doi":"10.1109/SECON.2008.4494317","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494317","url":null,"abstract":"To enhance robustness and to expand planetary exploration, a multi-rover system is suggested. To support such a system a hierarchical architecture is proposed. That architecture provides for heterogeneous rovers to share tasks, communicate with one another and to respond to unforeseen events.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127980884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Intruder detection using a wireless sensor network with an intelligent mobile robot response 入侵者检测采用无线传感器网络，具有智能移动机器人响应能力
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494250
Yuan Yuan Li, L. Parker
{"title":"Intruder detection using a wireless sensor network with an intelligent mobile robot response","authors":"Yuan Yuan Li, L. Parker","doi":"10.1109/SECON.2008.4494250","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494250","url":null,"abstract":"In this paper, we present an intruder detection system that uses a wireless sensor network and mobile robots. The sensor network uses an unsupervised fuzzy Adaptive Resonance Theory (ART) neural network to learn and detect intruders in a previously unknown environment. Upon the detection of an intruder, a mobile robot travels to the position where the intruder is detected to investigate. The wireless sensor network uses a hierarchical communication/learning structure, where the mobile robot is the root node of the tree. Our fuzzy ART network is based on Kulakov and Davcev's implementation [6]. We enhanced the fuzzy ART neural network to learn a time-series and detect time-related changes using a Markov model. The proposed architecture is tested on physical hardware. Our results show that our enhanced detection system has a higher accuracy than the basic, original, fuzzy ART system.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128512018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 69
Stand-alone monitoring of time varying digital data using reconfigurable System-On-Chip technology 使用可重构的片上系统技术对时变数字数据进行独立监测
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494295
M. Abdallah, O. Elkeelany, A. Alouani
{"title":"Stand-alone monitoring of time varying digital data using reconfigurable System-On-Chip technology","authors":"M. Abdallah, O. Elkeelany, A. Alouani","doi":"10.1109/SECON.2008.4494295","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494295","url":null,"abstract":"Reconfigurable System-On-Chip is a new technology compared to traditional System-On-Chip. Their use in designing an embedded system allows for low circuit size, portability, low cost, small power consumption, low path latency, high data rate processing, while protecting design from obsolescence, and allowing past deployment customization. Traditional data monitoring systems are computer-based. In many fields like industrial or medical fields, it is difficult to bring a computer into these fields due to various restrictions like power consumption, size and cost. By using high density Filed Programmable Gate Arrays (FPGA) technologies, stand-alone data monitoring systems can be designed. In this research, time varying data is monitored and plotted on a graphical display module using a novel stand-alone system design. That system is capable of monitoring continuous time varying data by plotting it graphically without the use of a personal computer. Successful achievements are presented in the paper for experimental data.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128577691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Environment monitoring with sensors for autonomous vehicles 自动驾驶汽车用传感器进行环境监测
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494247
J.J. Zacharias, M.J. Zapata, J. Conrad
{"title":"Environment monitoring with sensors for autonomous vehicles","authors":"J.J. Zacharias, M.J. Zapata, J. Conrad","doi":"10.1109/SECON.2008.4494247","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494247","url":null,"abstract":"In 2001, the United States Congress mandated, \";It shall be a goal of the Armed Forces to achieve the fielding of unmanned, remotely controlled technology such that by 2015, one-third of the operational ground combat vehicles are unmanned\"; [2]. Lone Wolf is an autonomous vehicle developed to operate under urban conditions. To ensure safe operations of the Lone Wolf, a network of sensors such as temperature, voltage, and light are designed and installed to closely monitor the vehicle's operational environment. This paper discusses the selected sensors and significant improvements made over an initial design for better microcontroller performance, cost efficiency and design robustness.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116724903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and performance improvements for fault detection in tightly-coupled multi-robot team tasks 紧密耦合多机器人团队任务中故障检测的设计和性能改进
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494285
Xingyan Li, L. Parker
{"title":"Design and performance improvements for fault detection in tightly-coupled multi-robot team tasks","authors":"Xingyan Li, L. Parker","doi":"10.1109/SECON.2008.4494285","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494285","url":null,"abstract":"This paper presents our current work to improve the design and performance of our previous work: SAFDetection, a sensor analysis based fault detection approach that is used to monitor tightly-coupled multi-robot team tasks. We improve this prior approach in three aspects. First, we show how Principal Components Analysis (PCA) can be used to automatically generate a small number of sensor features that should be used during the learning of the model of normal operation. Second, we implement three different algorithms for clustering sensor data in SAFDetection and compare their fault detection rates on physical robot team tasks, to determine the best technique for clustering sensor data while learning the model of normal team task operation. A third improvement we present is to modify the state transition probability from constant to a time-variant variable to describe the operation of the robot system more accurately. Our results show that a PCA feature selection approach, combined with a soft classification technique and time-varying transition probabilities, yields the best fault detection results.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124910999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Electric field pattern improvement by air hole radius variation in a 2-D Photonic Crystal laser (non reviewed) 二维光子晶体激光器中空穴半径变化对电场模式的改善(未评述)
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494334
H. Kaatuzian, H.H. Khakmardani, M. Khorasaninejad
{"title":"Electric field pattern improvement by air hole radius variation in a 2-D Photonic Crystal laser (non reviewed)","authors":"H. Kaatuzian, H.H. Khakmardani, M. Khorasaninejad","doi":"10.1109/SECON.2008.4494334","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494334","url":null,"abstract":"In this paper we will focus on photonic crystal lasers which are made by these new structures. Introducing a point defect in the center of a two dimensional slab with triangular lattice of air holes, acts as an optical laser cavity for trapping photons. Several design issues should be noticed in photonic crystal cavities to achieve better lasing action. This is the crucial part of the design which is determined here by desired characteristics for photonic device. Then we have investigated the effect of changing radius of air holes in a triangular lattice of a 2D photonic crystal semiconductor laser on electric field pattern, based on reported observations and experimental measurements. A microdisk structure with central defect has been used in simulations. This structure is formed by a quaternary semiconductor material (InGaAsP) with a refractive index of 3.4.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124146984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Keyword extraction from abstracts and titles 从摘要和标题中提取关键字
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494366
Rajarshi Bhowmik
{"title":"Keyword extraction from abstracts and titles","authors":"Rajarshi Bhowmik","doi":"10.1109/SECON.2008.4494366","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494366","url":null,"abstract":"Keywords are very important for any academic paper. We propose the Perceptron Training Rule for keyword extraction from titles and abstracts. We present a system for generating keywords which relies on weights of words in a sentence. The system generates keywords from academic research articles by selecting the most relevant keywords. We compare the keywords generated by our system and those generated by cluster analysis to the keywords given by the authors and analyze the results based on full-keyword matches, partial-keyword matches and no-keyword matches.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123227527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
A new signal processing technique for evaluation of the reactive power in the power transmission and distribution systems 一种新的用于输配电系统无功功率评估的信号处理技术
IEEE SoutheastCon 2008 Pub Date : 2008-04-03 DOI: 10.1109/SECON.2008.4494319
A. Abiyev
{"title":"A new signal processing technique for evaluation of the reactive power in the power transmission and distribution systems","authors":"A. Abiyev","doi":"10.1109/SECON.2008.4494319","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494319","url":null,"abstract":"This paper presents a new modified Walsh function (WF) based method for the measurement of reactive power (RP) in sinusoidal as well as in noise conditions. Proposed method simplifies the multiplication procedure to evaluate the reactive components from instantaneous power signal using peculiar properties of the WF. One of the advantages of proposed measurement approach is that in contrast to the known existing methods which involve phase shift operation of the input signal, the proposed technique does not require the time delay of the current signal to the pi/2 with respect to the voltage signal. Another advantage is related to the computational saving properties of the proposed approach coming from use of the Walsh Transform (WT) based signal processing method. Proposed method eliminates an influence of the prevalent third order current harmonic to and reduces the effect of the highest order current harmonics on the RP measurement results. Validity and effectiveness of the suggested method for evaluation of the RP components of the electrical power have been tested by use of a simulation tools developed on the base of \"Matlab\".","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126499471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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