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2013 13th International Symposium on Communications and Information Technologies (ISCIT)最新文献

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FFT based automatic species identification improvement with 4-layer neural network 基于FFT的四层神经网络物种自动识别改进
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645912
Rong Sun, Y. Marye, Hua-An Zhao
{"title":"FFT based automatic species identification improvement with 4-layer neural network","authors":"Rong Sun, Y. Marye, Hua-An Zhao","doi":"10.1109/ISCIT.2013.6645912","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645912","url":null,"abstract":"In this paper, an automatic species identification system has been developed. Recoded data was segmented, processed, features taken out, and identified by an automatic operation. A feature quantity method based on FFT with derivative of frequency band power making use of 4-layer neural network is proposed. Comparison of the results with the 4-layer neural network has been performed on wild bird species identification based on sound data which has proved promising.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126584967","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: 8
Temperature independent log domain filter 温度无关的日志域滤波器
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645860
Surachoke Thanapitak, P. Kirawanich, D. Wilairat, Pongsathorn Sedtheethorn
{"title":"Temperature independent log domain filter","authors":"Surachoke Thanapitak, P. Kirawanich, D. Wilairat, Pongsathorn Sedtheethorn","doi":"10.1109/ISCIT.2013.6645860","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645860","url":null,"abstract":"This paper presents the current mode log domain filter based on the Bernoulli cell which has moderately low sensitivity to temperature change. According to the simulation results in a standard 0.18μm CMOS process, the sensitivity of the output current over temperature of this log domain circuit is 2.941pA/°C. This is archived by using the modified current reference circuit which is directly proportion to temperature as the bias current for the log domain filter circuit. Additionally, this modified current reference circuit can be operated at low power supply voltage (1.11V) while high PSSR (0.43nA/V) is maintained. The power consumption of this modified current reference is in the sub-microwatt range (0.1μW).","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"56 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130799518","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
Conception of simulating grounded negative inductor and implementation using operational transconductance amplifiers 模拟接地负电感的概念及使用运算跨导放大器的实现
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645879
Adisorn Kwawsibsam, A. Lahiri, W. Jaikla
{"title":"Conception of simulating grounded negative inductor and implementation using operational transconductance amplifiers","authors":"Adisorn Kwawsibsam, A. Lahiri, W. Jaikla","doi":"10.1109/ISCIT.2013.6645879","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645879","url":null,"abstract":"This paper presents a novel realization of a grounded negative inductor simulator (NIS). The conception of creating grounded NIS is discussed and then a possible circuit realization using operational transconductance amplifier (OTA) is provided. The proposed circuit realization employs only two OTAs, one voltage summing circuit and three capacitors. PSPICE simulations have validated the workability of the proposed NIS in the operating frequency of 10kHz to 10MHz.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133030510","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: 4
The exact performance evaluation for modern wireless communications in Nakagami fading 现代无线通信中上衰落的精确性能评价
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645813
P. Sedtheetorn
{"title":"The exact performance evaluation for modern wireless communications in Nakagami fading","authors":"P. Sedtheetorn","doi":"10.1109/ISCIT.2013.6645813","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645813","url":null,"abstract":"This paper presents a theoretical analysis on the system performance indicators, in terms of bit error rate and spectral efficiency, for modern wireless communication systems in the general case of fading environment, namely Nakagami fading. Based on moment generating function technique, we derive the cumulative probability functions of signal-to-interference-plus-noise-ratio. This leads us to propose new exact expressions for bit error rate and spectral efficiency in Nakagami fading. Validated with Monte Carlo simulation, the proposed expressions benefit us a low-numerical complexity approach to compute the exact performances of the systems.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417518","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
Joint holding time and rate utility based access model for cognitive radio network 基于联合保持时间和速率效用的认知无线网络接入模型
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645844
Soumaya Dahi, S. Tabbane
{"title":"Joint holding time and rate utility based access model for cognitive radio network","authors":"Soumaya Dahi, S. Tabbane","doi":"10.1109/ISCIT.2013.6645844","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645844","url":null,"abstract":"Spectrum handoff (HO) is one of the main issues in cognitive radio networks. Spectrum handoff occurs when the owner of the spectrum or the primary user (PU) reclaims a channel already used opportunistically by a secondary user (SU). In this case, the SU has to vacate this channel and select another free one. This process has a negative impact on the performance of SU transmission in terms of delay and link maintenance, specially because of the unpredictable PU behavior. In this paper, the problem of minimizing the secondary user (SU) handoff process because of primary user activity is underlined. A mixed Integer non Linear Programming formulation of the problem is detailed and a channel selection strategy is proposed. The main idea of this access model is to select channels maximizing the preference of the secondary user towards the holding time and the achievable throughput. The SU preference is expressed using a microeconomic concept of Sigmoid utility. The performance and the suitability of the proposed access model is investigated through numerical simulations.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131427523","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
Information technology to strengthen local community tasks: Village fund and Elderly Payment System case studies 资讯科技加强地方社区工作:乡村基金及长者支付系统个案研究
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645959
Songsan Udomsilp
{"title":"Information technology to strengthen local community tasks: Village fund and Elderly Payment System case studies","authors":"Songsan Udomsilp","doi":"10.1109/ISCIT.2013.6645959","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645959","url":null,"abstract":"The Elderly Payment Information System (EPIS) and the Information of the Village Fund (IVF) are two information system projects that we designed and analyzed by utilizing information technology to help the activities of local communities more efficiently and effectively, both at the administrative level and the village group level. Two groups of students from the School of Information Technology at Mae Fah Luang University participated in both projects from the beginning. One group started in December 2011 and the other in December 2012. Each project took 6 months to complete. The impact of these two projects will reveal firstly that information technology, especially available hardware and software that are not beyond the capability of a local administration to implement, can make existing tasks more effective and efficient. Secondly, the students who participated in these two projects have acquired a great opportunity to work as information system analysts and designers in real situations where local communities actually solve particular problems by utilizing information technology for their own tasks. Lastly, for the School of Information Technology and Mae Fah Luang University as a whole, it can be demonstrated that a curriculum utilizing Problem-Based Learning (PBL) is an appropriate direction for this type of study.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131676429","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
Chromosome classification for metaphase selection 中期选择的染色体分类
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645903
Ravi Uttamatanin, P. Yuvapoositanon, A. Intarapanich, Saowaluck Kaewkamnerd, S. Tongsima
{"title":"Chromosome classification for metaphase selection","authors":"Ravi Uttamatanin, P. Yuvapoositanon, A. Intarapanich, Saowaluck Kaewkamnerd, S. Tongsima","doi":"10.1109/ISCIT.2013.6645903","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645903","url":null,"abstract":"Identification of good metaphase spread is an important step in chromosome analysis for genetic disorder detection. In this paper, we propose a rule for chromosome classification to identify good metaphase spreads. The chromosome shapes were classified into four main classes. The first and the second classes refer to individual chromosomes with straight and bended shapes, respectively. The third class is characterized as those chromosomes with overlapping bodies and the forth class is for the non-chromosomal artifacts. Good metaphase spreads should largely contain the first and the second classes while the number of the third class should be kept minimal. Several image parameters were examined and used for creating rule-based classification. The threshold value for each parameter is determined using statistical model. We observed that the empirical probability density function of the parameters can be represented by Gaussian model and, hence, the threshold value can be easily determined. The proposed rules can efficiently and accurately classify the individual chromosome with > 90% accuracy.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115417069","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: 7
Weighted least-squares design of variable recursive digital filters with guaranteed stability 保稳定性可变递归数字滤波器的加权最小二乘设计
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645882
T. Deng, S. Chivapreecha, K. Dejhan
{"title":"Weighted least-squares design of variable recursive digital filters with guaranteed stability","authors":"T. Deng, S. Chivapreecha, K. Dejhan","doi":"10.1109/ISCIT.2013.6645882","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645882","url":null,"abstract":"The stability guarantee is the most important issue in designing variable infinite-impulse-response (IIR) digital filters. This paper presents a new variable substitution method for transforming the denominator coefficients of a variable-IIR-filter into another set of variables such that arbitrary values of the new variables can guarantee the stability of the resulting variable-IIR-filter. That is, the design problem subject to stability guarantee (constrained non-linear design problem) is converted into an unconstrained design problem. As a consequence, the resulting variable-IIR-filters are always guaranteed theoretically. A lowpass variable-IIR-filter design example is given to illustrate the effectiveness of the design formulation.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116392735","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: 4
Improving the forward current of P-N diode using soft X-ray annealing method 用软x射线退火法提高pn二极管的正向电流
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645875
S. Ueamanapong, I. Srithanachai, A. Suwanchatree, S. Niemcharoen, N. Klunngien, A. Poyai
{"title":"Improving the forward current of P-N diode using soft X-ray annealing method","authors":"S. Ueamanapong, I. Srithanachai, A. Suwanchatree, S. Niemcharoen, N. Klunngien, A. Poyai","doi":"10.1109/ISCIT.2013.6645875","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645875","url":null,"abstract":"This paper presents a new result to improve the performance of P-N diode. The P-N diodes are fabrication using CMOS technology at TMEC. Electrical characteristics of P-N junction diode can be analyzed by current-voltage (I-V) measurement. This paper investigates X-ray irradiation by its electrical characteristics of difference X-ray exposure time. The X-ray energy use to expose 55 and 70 keV various time in the range 5-205 sec of exposure. After X-ray irradiation the forward current are increased about 3-4 orders. The series resistance and recombination lifetime are main factor for describe the change of forward current. Series resistance after X-ray irradiation with 55 and 70 keV are decreased from 10 kΩ to 5 Ω, which show that the device performance of diode are increased after X-ray irradiation. While the recombination lifetime are decreased from 55 to 48 μsec and 52 to 45 μsec at 55 and 70 keV, respectively. From the results show that soft X-ray annealing is very important to semiconductor industry.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129710883","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
Bayesian estimation of Two-Sided Gamma random vectors in speckle noise 散斑噪声中双侧伽玛随机向量的贝叶斯估计
2013 13th International Symposium on Communications and Information Technologies (ISCIT) Pub Date : 2013-10-24 DOI: 10.1109/ISCIT.2013.6645887
P. Kittisuwan
{"title":"Bayesian estimation of Two-Sided Gamma random vectors in speckle noise","authors":"P. Kittisuwan","doi":"10.1109/ISCIT.2013.6645887","DOIUrl":"https://doi.org/10.1109/ISCIT.2013.6645887","url":null,"abstract":"In this paper, we present a novel speckle removal algorithm within the framework of Bayesian estimation and wavelet analysis. The proposed method to apply a logarithmic transformation to convert speckel, multiplicative, noise model into an additive noise model. The subband decomposition of logarithmically transformed image are the best described by a family of heavy-tailed densities such as Two-Sided Gamma. Then, we propose a maximum a posterior (MAP) estimator assuming Two-Sided Gamma random vectors for each parent-child wavelet coefficients of noise-free log-transformed data and log-normal density for speckle noise. The experimental results show that the proposed method yields good denoising results.","PeriodicalId":356009,"journal":{"name":"2013 13th International Symposium on Communications and Information Technologies (ISCIT)","volume":"18 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129816881","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
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