2008 11th International Conference on Computer and Information Technology最新文献

{"title":"Amplitude banded technique and parallel structure for Godard and Sato algorithms of blind channel equalization","authors":"M.L.R. Khan, M. H. Wondimagegnehu, T. Shimamura","doi":"10.1109/ICCITECHN.2008.4803015","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803015","url":null,"abstract":"The least-mean-squares (LMS) algorithm which updates the filter coefficients by gradient-based method is the most popular adaptive filtering one. In this paper we propose a novel amplitude banded (AB) technique with LMS on Godard (ABGodard) and Sato (ABSato) algorithms for the equalization of communication channels. The nonlinear properties of the AB technique with LMS algorithm are inherited into the ABGodard and ABSato algorithms, resulting in an improvement of equalization performance in favor of the ABSato algorithm. Mean square error (MSE) as well as bit error rate (BER) are investigated on a simple communication channel model. Observations on simulations show that ABGodard and ABSato algorithms provide better performance than the standard Godard and Sato algorithms, respectively. The parallel structure of the Sato and ABSato algorithms provides a further performance improvement. This is also observed from MSE and BER performances.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"115 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134393634","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}

{"title":"Connecting telephone exchange centers over metro ethernet networks by using Diffserv-MPLS","authors":"G. Mirjalily, P. Bastani, S. Almodarresi","doi":"10.1109/ICCITECHN.2008.4803078","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803078","url":null,"abstract":"Recent large deployment of high-speed metro Ethernet networks creates opportunity to connect legacy telephone exchange centers and cellular telephone base stations to the core telephony network. The success of data and legacy voice services convergence shall depend on whether it can provide the customer with the required QoS or not. Packet-base telephony service requires stringent bounds on end-to-end packet delay, jitter, and loss. New protocols such as MPLS and Diffserv are realized due to the major advantages associated with them such as QoS. This paper studies the performance of connecting telephone exchange centers over a metro Ethernet network using MPLS and DiffServ QoS model. We will implement some simulations to evaluate the performance in terms of delay, jitter and loss.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"42 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131939294","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}

{"title":"Analysis and synthesis of Bangla Dental consonants","authors":"S. A. Hossain, M.L. Rahman, F. Ahmed","doi":"10.1109/ICCITECHN.2008.4803003","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803003","url":null,"abstract":"This paper describes in detail the analysis results of the Bangla dental consonants [t], [th], [d] and [dh] analyzed through the spectral estimation techniques in four long vowel contexts [a], [i], [o], and [u] for an accurate description of their acoustic characteristics and features and the differences between the corresponding cognate sounds. Various parameters like duration of closure/voice bar, duration of burst, voice onset time, duration of aspiration, rate of second formant transition and burst frequencies and amplitudes have been studied in details. For the synthesis of dental sounds, the source and vocal tract parameters of the synthesizer configuration were selected very carefully along with formant frequencies and their relative amplitudes besides the burst amplitude. The quality of synthetic speech was evaluated through subjective listening along with matching the spectra of synthetic speech with original speech.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927130","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}

{"title":"Automatic Life-Logging: A novel approach to sense real-world activities by environmental sound cues and common sense","authors":"M. Shaikh, M. I. Molla, Keikichi Hirose","doi":"10.1109/ICCITECHN.2008.4803018","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803018","url":null,"abstract":"There are many studies that collect and store life log for personal memory. The paper explains how a system can create someone's life log in an inexpensive way to share daily life events with family or friends through socialnetwork or messaging. In the modern world where people are usually busier than ever, family members are geographically distributed due to globalization of companies and humans are inundated with more information than they can process, ambient communications through mobile media or internet based communication can provide rich social connections to friends and family. People can stay connected to their loving ones ubiquitously that they care about by sharing awareness information in a passive way. For users who wish to have a persistent existence in a virtual world - to let their friends know about their current activity or to inform their caretakers - new technology is needed. Research that aims to bridge real life and the virtual worlds (e.g., Second Life, Face book etc.) to simulate virtual living or logging daily events, while challenging and promising, is currently rare. Only very recently the mapping of real-world activities to virtual worlds has been attempted by processing multiple sensors data along with inference logic for realworld activities. Detecting or inferring human activity using such simple sensor data is often inaccurate, insufficient and expensive. Hence, this paper proposes to infer human activity from environmental sound cues and common sense knowledge, which is an inexpensive alternative to other sensors (e.g., accelerometers) based approaches. Because of their ubiquity, we believe that mobile phones or hand-held devices (HHD) are ideal channels to achieve a seamless integration between the physical and virtual worlds. Therefore, the paper presents a prototype to log daily events by a mobile phone based application by inferring activities from environmental sound cues. To the best of our knowledge, this system pioneers the use of environmental sound based activity recognition in mobile computing to reflect one's real-world activity in virtual worlds.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117087067","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}

{"title":"Developing a model of e-governance for urban and rural areas of Bangladesh","authors":"Gazi Zahirul Islam, Md. Ibrahim Khan, Md. Anas Boksh Mazady","doi":"10.1109/ICCITECHN.2008.4803089","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803089","url":null,"abstract":"Several developing countries including Bangladesh are realizing the role ICT (information & communication technology) can play in the governance sector, and are putting into practice innovative e-governance models that may be technologically simple but are drastically changing the way information is distributed in the society. This paper depicts and implements a model of e-governance for urban and rural areas in Bangladesh. The project deeply considered existing ICT infrastructure in Bangladesh and put effort to implement the model in a cost effective and flexible manner. A clear, comprehensive layout and network architecture for rural and city areas is given separately. We also described complementary tasks such as database implementation, system development, web related task etc. for e-governance. The main objective of the project is to implement e-governance in an easy and cost effective way to suit with existing ICT infrastructure in Bangladesh to provide better information and service delivery of government to the people.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"396 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116673691","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}

{"title":"Density based clustering technique for efficient data mining","authors":"A. Rahman, Anindya Chowdhury, D.M.J. Rahman, A.R.M. Kamal","doi":"10.1109/ICCITECHN.2008.4803050","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803050","url":null,"abstract":"Clustering analysis is an important function of data mining. There are various clustering methods in data mining. Based on these methods various clustering algorithms are developed. A recent approach for clustering analysis is based on ldquoswarm intelligencerdquo. Based on this ldquoswarm intelligencerdquo an algorithm was proposed named ldquoant-cluster algorithmrdquo. However, existing ldquoant clusteringrdquo algorithm has a limitation in finding the value of two constant K1 and K2, which is user defined., for computing the value of the picking up probability Pp and dropping probability Pd. In this paper our approach is to gain the value of Pp and Pd without giving the user defined value of K1 and K2. We also intend to retain the Pp and Pd in between 0 to 1 in order to get optimized result.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115700559","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}

{"title":"Performance investigation of earth-to-satellite microwave link due to rain fade in Bangladesh","authors":"M.R. Islam, M. Rahman, F. Anwar, M. Rashid","doi":"10.1109/ICCITECHN.2008.4803088","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803088","url":null,"abstract":"The fast growth in communication systems has resulted congestion in lower frequency bands and system designers are forced to explore higher and higher frequencies. Rain is a dominant source of attenuation at higher frequencies and consequently degrades the system performance in tropical and subtropical regions. The knowledge of rain fade and its performance is essential in order to optimize system capacity and meet quality and reliability. This paper has investigated performance of earth-to-satellite link due to rain fades operating in a subtropical country Bangladesh. The rain intensity data are derived from forty years measured annual rainfall data. The converted rain intensity data is used to estimate rain fades at C, Ku and Ka-bands. The rain fade is also estimated using ITU-R recommended rain intensity. Noise generated during rains is predicted for all three bands and carrier-to-noise ratios are estimated to compare the performances of earth-to-satellite link at different frequency bands in a subtropical region.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114491516","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}

{"title":"Variability model and management for web service: A petri net based approach","authors":"Liang Xingyu, Hu Hao, Lu Jian","doi":"10.1109/ICCITECHN.2008.4803119","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803119","url":null,"abstract":"Variability management is an efficient solution to support service's reuse, but most of the existing variability models pay attention to service's functions and care little about the service's behavior that how these functions are invoked. In this paper, we provide a variability model based on Petri net that both the variable functions and the invocation constraint of these functions are handled. We use general service to refer the service developed with variability for reuse; by variability binding service instance will be generated for use. Variable functions are modeled by transitions of Petri net; the service behavior is shown by the firing of transitions.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127381733","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}

{"title":"Comparing FLV and MPEG4 (H.264/AVC) multimedia file format with wireless network parameters","authors":"M. Mahmud, S. Monir, T. Khan, M.A.R. Mustafa, H. Sarwar","doi":"10.1109/ICCITECHN.2008.4803037","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4803037","url":null,"abstract":"Accommodating multimedia resources in the wireless media is a long cherished service. In this paper, we compared the FLV and MPEG4 (H.264/AVC) format of multimedia content using frame rates, sizes and byte rates. Thus we showed that MPEG4 performs better than FLV.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126587008","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}

{"title":"A concurrent approach to clustering algorithm with applications to VLSI domain","authors":"S. Iqbal, M. I. Monir, T. Sayeed, A.H.M. Misbah-Uddin","doi":"10.1109/ICCITECHN.2008.4802982","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2008.4802982","url":null,"abstract":"Circuit partitioning plays an important role in physical design automation of very large scale integration (VLSI) chips. In this brief we present a new connectivity based top down as well as bottom up approach to clustering algorithm for VLSI circuit partitioning. The proposed clustering algorithm partitions the circuit by focusing on highly interconnected cell groups. This clustering algorithm leads to a parallel implementation in which multiple processors are used to identify clusters simultaneously. The process starts with forming clusters by grouping the cells that are tightly connected and as well as the cells that are loosely connected. Considering both types of groups has the advantage that clusters formed from this technique will be highly connected and compact too. Therefore the proposed clustering method can reduce the size and also speed-up the large-scale partitioning problem without loosing partitioning solution qualities. The performance of the proposed clustering algorithm is evaluated on a standard set of partitioning benchmark-ISPD98 benchmark suite.","PeriodicalId":335795,"journal":{"name":"2008 11th International Conference on Computer and Information Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124206279","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}