Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing最新文献_第3页

A parallelization of orchard temperature predicting programs 果园温度预测程序的并行化

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032889

E. Mazurek, M. Fukuda

{"title":"A parallelization of orchard temperature predicting programs","authors":"E. Mazurek, M. Fukuda","doi":"10.1109/PACRIM.2011.6032889","DOIUrl":"https://doi.org/10.1109/PACRIM.2011.6032889","url":null,"abstract":"Frost protection is a significant concern among tree-fruit growers. In order to protect orchards from frost, temperature sensor networks have gained popularity to judge when and where to turn on wind generators and sprinklers. Currently these sensor networks only give growers a real-time alert, however such sensor networks would be more effective if they were integrated in a computation loop that uses past and current temperature data for predicting every overnight transition of orchard air temperature. Although a couple of algorithms using artificial neural network and empirically-formulated polynomials are available to the public, they need to be parallelized for useful on-the-fly prediction. To utilize a cluster of multi-core computing nodes (available through cloud services), we are developing MASS, a library for multi-agent spatial simulation, and parallelizing temperature prediction programs with MASS. This paper demonstrates the MASS library's suitability to parallelization of temperature prediction programs for on-the-fly sensor-data analysis by (1) porting the programs to MASS, (2) running them in a multi-core system, (3) feeding real-time sensor data to them, and (4) measuring their analyzing performance.","PeriodicalId":236844,"journal":{"name":"Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128948730","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: 2

An improved TCP congestion control algorithm for wireless networks 改进的无线网络TCP拥塞控制算法

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032923

Ahmed Khurshid, M. Kabir, Md Anindya Prodhan

引用次数: 12

Spinal Tap: High level analysis for heavy metal systems 脊柱穿刺:重金属系统的高水平分析

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6033012

N. Singh, Dean Pucsek, J. Wall, C. Gibbs, M. Salois, Y. Coady

引用次数: 1

Scalable video coding based on high efficiency video coding (HEVC) 基于高效视频编码(HEVC)的可扩展视频编码

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032917

Hyomin Choi, Jung-Hak Nam, Donggyu Sim, I. Bajić

引用次数: 26

Threshold decision method for subtractive color process for lossless compression 阈值判定方法用于减色处理的无损压缩

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032895

Ayumu Akaoka, Y. Miura, S. Watanabe

引用次数: 0

Accurate floating-point operation using controlled floating-point precision 使用可控制的浮点精度进行精确的浮点运算

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032978

A. M. Zaki, Ayman M. Bahaa-Eldin, M. H. El-Shafey, G. Aly

{"title":"Accurate floating-point operation using controlled floating-point precision","authors":"A. M. Zaki, Ayman M. Bahaa-Eldin, M. H. El-Shafey, G. Aly","doi":"10.1109/PACRIM.2011.6032978","DOIUrl":"https://doi.org/10.1109/PACRIM.2011.6032978","url":null,"abstract":"Rounding and accumulation of errors when using floating point numbers are important factors in computer arithmetic. Many applications suffer from these problems. The underlying machine architecture and representation of floating point numbers play the major role in the level and value of errors in this type of calculations. A quantitative measure of a system error level is the machine epsilon. In the current representation of floating point numbers, the machine epsilon can be as small as 9.63E-35 in the 128 bit version of IEEE standard floating point representation system. In this work a novel solution that guarantees achieving the desired minimum error regardless of the machine architecture is presented. The proposed model can archive a machine epsilon of about 4.94E-324. A new representation model is given and a complete arithmetic system with basic operations is presented. The accuracy of the proposed method is verified by inverting a high order, Hilbert matrix, an ill-conditioned matrix that cannot be solved in the traditional floating point standard. Finally some comparisons are given.","PeriodicalId":236844,"journal":{"name":"Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132196823","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

Replay attacks and detection in tactical MANETs 战术机动网络中的重放攻击和检测

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032897

Li Li, D. Kidston, Phil J. Vigneron, P. Mason

引用次数: 4

Control strategies on cross-layer optimization within secondary spectrum access networks 二次频谱接入网跨层优化控制策略

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032997

L. Shen, Sean Rocke, Si Chen, Hanyuan Lu, A. Wyglinski

{"title":"Control strategies on cross-layer optimization within secondary spectrum access networks","authors":"L. Shen, Sean Rocke, Si Chen, Hanyuan Lu, A. Wyglinski","doi":"10.1109/PACRIM.2011.6032997","DOIUrl":"https://doi.org/10.1109/PACRIM.2011.6032997","url":null,"abstract":"Cross-layer optimization has been frequently considered as one solution for achieving more efficiency in wireless networks. Different scheduling algorithms can be implemented to satisfy specific requirements. With respect to spectrum allocation, conventional algorithms often do not employ advanced forms of priority scheduling for the assignment of transmission channels, thus resulting in the inefficient utilization of wireless network resources. To improve the utilization in this situation, we investigate three control strategies: master-slave configuration, multi supervisor, and floating supervisor, which can coordinate specific spectrum allocation efficiently and exchange their priorities. The proposed strategies apply different algorithms in order to utilize transmit power for improving system error robustness, utilize data rate to increase transmission bandwidth and information throughput, and utilize frame size to control the amount of information transmitted per burst. The simulation results of these algorithms are compared against each other. It can be observed from our research results that structures that are more complex generally achieve higher efficiency at the cost of increased delay.","PeriodicalId":236844,"journal":{"name":"Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"43 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134382026","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

New performance estimation scheme and applications for broadband communications over power lines in the home 家庭电力线宽带通信的新性能评估方案及应用

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032958

Mikio Mizutani, M. Tsuru, Y. Oie

引用次数: 2

Towards audio-video based handwritten mathematical content recognition in classroom videos 基于音视频的课堂视频手写数学内容识别

Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 2011-10-03 DOI: 10.1109/PACRIM.2011.6032992

Smita Vemulapalli, M. Hayes

{"title":"Towards audio-video based handwritten mathematical content recognition in classroom videos","authors":"Smita Vemulapalli, M. Hayes","doi":"10.1109/PACRIM.2011.6032992","DOIUrl":"https://doi.org/10.1109/PACRIM.2011.6032992","url":null,"abstract":"Recognizing handwritten mathematical content in classroom videos poses a range of interesting challenges. In this paper, we focus on improving the character recognition accuracy in such videos using a combination of video and audio based text recognizers. We propose a two step assembly consisting of a video text recognizer (VTR) as the primary character recognizer and an audio text recognizer (ATR) for disambiguating, if needed, the output of the VTR. We propose techniques for (1) detecting ambiguity in the output of the VTR so that a combination with the ATR may be triggered only for ambiguous characters, (2) synchronizing the output of the two recognizers for enabling combination, and (3) combining the options generated by the two recognizers using measurement and rank based methods. We have implemented the system using an open source implementation of a character recognizer and a commercially available phonetic word-spotter. Through experiments conducted using video recorded in a classroom-like environment, we demonstrate the improvement in the character recognition accuracy that can be achieved using our approach.","PeriodicalId":236844,"journal":{"name":"Proceedings of 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130314239","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: 1