Ranjan Mehera, Arpan Chakraborty, Piyali Datta, R. Pal
{"title":"An innovative approach towards detection and exclusion of overlapped regions in guard zone computation","authors":"Ranjan Mehera, Arpan Chakraborty, Piyali Datta, R. Pal","doi":"10.1109/C3IT.2015.7060156","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060156","url":null,"abstract":"The guard zone computation problem is of utmost importance in the domain of VLSI physical design automation as one of the major purposes is to find an optimized way to place a set of two-dimensional blocks on a chip floor. Beyond this, it has huge significance in the field of robotic motion planning, Geographical information system, automatic monitoring of metal cutting tools and design of any embedded systems. In VLSI layout design, the circuit components (or the functional units / modules or groups / blocks of different sub-circuits) that may be viewed as a set of polygonal regions on a two-dimensional plane, are not supposed to be placed much closer to each other in order to avoid electrical (parasitic) effects among them. Each (group of) circuit component(s) Ci is associated with a parameter δi such that a minimum clearance zone of width δi is to be maintained around Ci. If the guard zonal regions overlap, we have to remove the overlapped regions in order to compute the resultant outer guard zone (sometimes inner guard zones are also an issue to be considered). The location of guard zone (of specified width) for a simple polygon is a very important problem for resizing a (group of) circuit component. In this paper, we have developed an algorithm to compute the guard zone of a simple polygon as well as to exclude the overlapped regions among the guard zonal segments (if any) in O(nlogn) time, where n is the number of vertices of the given simple polygon.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121396627","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}
T. Bera, Atanu Chowdhury, Hiranmoy Mandai, Kalyan Kar, Animesh Haider, J. Nagaraju
{"title":"Thin domain wide electrode (TDWE) phantoms for Electrical Impedance Tomography (EIT)","authors":"T. Bera, Atanu Chowdhury, Hiranmoy Mandai, Kalyan Kar, Animesh Haider, J. Nagaraju","doi":"10.1109/C3IT.2015.7060223","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060223","url":null,"abstract":"Electrical Impedance Tomography (EIT) is a nonlinear ill posed inverse problem which is very prone to modeling errors. 2D-EIT reconstructs the spatial distribution of the object impedance profile comparing the measurements of boundary voltage data collected from a 3D object with the calculated data generated from an absolute 2D domain in computer. As the 2D-EIT assumes current conduction in two dimensional plane of EIT electrode array, the 2D EIT systems working with a practical 3D phantom produce some error and hence the forward modeling should be modified accordingly. On the other hand, the 3D error can be reduced by using long electrodes but in long electrode system, the electrode to electrode gap (EEGR) ratio required to be maintained to attain a good sensitivity is found difficult. In this direction the thin domain wide electrode (TDWE) phantoms are proposed for electrical impedance tomography (EIT) to reduce the 3D error by maintaining the required EEGR. A LabVIEW based multifrequency EIT instrumentation has been developed and a number of TDWE phantoms with different inhomogeneity configurations have been studied. Absolute impedance images reconstructed in EIDORS, demonstrate that developed TDWE phantom improves image quality by reducing the 3D error.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125411023","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}
Shreem Ghosh, Aninda Mukherjee, Kunal Sahoo, S. Sen, A. Sarkar
{"title":"A novel sensitivity enhancement technique employing wheatstone's bridge for strain and temperature measurement","authors":"Shreem Ghosh, Aninda Mukherjee, Kunal Sahoo, S. Sen, A. Sarkar","doi":"10.1109/C3IT.2015.7060116","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060116","url":null,"abstract":"An improved sensitivity enhancement technique for strain and temperature measurement has been presented. In the present work, the conventional Wheatstone's bridge has been modified using active devices for enhancement of sensitivity by twelve times. It can also measure incremental resistance precisely and linearly. Experiments have been carried out for validation of the proposed circuit for both strain gauge and RTD and results showed that the maximum error was limited to within ± 1.5% for either case. The proposed circuit is very low cost and involves a few active components. The theory of the proposed circuit has been established and then validated with conventional half bridge circuit for both strain and temperature measurement. The experiments were conducted with strain gauge sensor for strain measurement and a Pt-100 RTD sensor for temperature measurement. The results obtained show that the output of the circuit is almost twelve times than the conventional half bridge circuit.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121780574","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 software product and test automation software using Agile methodology","authors":"A. Sultania","doi":"10.1109/C3IT.2015.7060120","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060120","url":null,"abstract":"The use of testing framework has become a growing requirement in software development. This framework is a kind of software which can automate the pre-generated test cases. So, for developing test automation software an incremental and timeframe iterative approach known as Agile Software Development Methodology can be used. It provides software developers a working test framework early with respect to traditional software development methods e.g. waterfall model. In this paper, an approach of developing test automation software with closed collaboration with product development team is discussed. The proposed method modifies the Agile Development method with scrum by introducing few meetings for combined teams working for development of software product and test automation software. An industrial case study is also presented in the paper.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123520688","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":"Event extraction from biomedical text using CRF and genetic algorithm","authors":"A. Majumder, Asif Ekbal","doi":"10.1109/C3IT.2015.7060131","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060131","url":null,"abstract":"The main aim of biomedicai information extraction is to capture biomedicai phenomena from textual data by extracting relevant entities, information and relations between biomedicai entities (i.e. proteins and genes). In the recent past the focus is shifted towards extraction of more complex relations in the form of bio-molecular events that may include several entities or other relations. In this paper we propose a supervised machine learning approach based on Conditional Random Field (CRF) using Genetic Algorithm (GA) to detect events, classify them into some predefined categories of interest and to determine the arguments of the events. We implement a set of statistical and linguistic features that represent various morphological, syntactic and contextual information of the bio-molecular trigger words. Experiments using 5-fold cross validation demonstrate the recall, precision and F-measure values of 36.52%, 59.72% and 45.33%, respectively.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123751620","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":"Spectrum sharing networks with imperfect channel state information","authors":"S. Kundu, Binod Prasad, Sanjay Dhar Roy","doi":"10.1109/C3IT.2015.7060108","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060108","url":null,"abstract":"Cognitive Radio (CR) systems utilizes the underutilized spectrum in two ways i.e. overlay and underlay mode. In overlay CR, a secondary user (SU) opportunistically access primary user's spectrum when it is unused as decided based on spectrum sensing. In contrast, a SU in underlay CR system accesses the spectrum at any time as long as the interfering power received at a primary receiver is below a certain limit. For use in underlay a SU needs to control its transmit power based on channel state information (CSI) between its transmitter and primary receiver. Furthermore a cognitive relay helps to improve the performance of SU The present paper discusses the research challenges associated with underlay CR system. The imperfection associated with CSI and its impact on performance of SU is discussed. Schemes of selection of cognitive relay in underlay are discussed. Some interesting performance results based on our work are also presented. The results show the effects of imperfect CSI and primary network on the performance of SU.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131857610","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":"Design optimization and large-signal simulation of DLHL Si IMPATT diode at 60 GHz","authors":"Suranjana Banerjee, A. Acharyya, M. Mitra","doi":"10.1109/C3IT.2015.7060140","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060140","url":null,"abstract":"A four-level optimization technique has been used to design a double low-high-low (DLHL) impact avalanche transit time (IMPATT) diode based on Si for 60 GHz operation. Initially the position of the charge bumps in both n- and p-epitaxial layers followed by the widths of those and the ratio of high to low doping concentrations have been varied subject to obtain the maximum large-signal DC to RF conversation efficiency from the device. Finally the bias current density is varied within a specified range to obtain the optimum value of it for which the DC to RF conversation efficiency of the device is maximum. The above mentioned four optimization steps have been repeated until the method converges to provide a stable optimized DC to RF conversion efficiency. A large-signal simulation technique based on non-sinusoidal voltage excitation (NSVE) model developed by the authors is used for this purpose. The large-signal properties of the optimized DLHL Si IMPATT have been simulated and those are compared with the experimental results reported earlier. The said comparison shows that the optimized DLHL diode is capable of delivering significantly higher RF power output with greater DC to RF conversion efficiency at 60 GHz as compared to its un-optimized counterpart.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"565 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116450371","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":"An improved technique of capacitance measurement of solar cells","authors":"Hiranmoy Mandal, Sirshendu Saha","doi":"10.1109/C3IT.2015.7060204","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060204","url":null,"abstract":"It is very much important to design an efficient and reliable power conditioner with detailed study on measurement of AC parameter of solar cell (especially the cell capacitance). In this paper, we measured the capacitance of GaAs/Ge and Silicon (BSFR) solar cells under dark condition over a wide range of bias voltages using low level sine wave signal of desired amplitude. The approach of sinusoidal wave method offers the accurate and most economic way of studying the capacitance of semiconductor devices. Here frequency domain techniques have been used. It is shown that for GaAs/Ge solar cell, it exhibits only transition capacitance while Silicon (BSFR) solar cell exhibited both transition and diffusion capacitances.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130790196","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":"Mitigation of power quality problems using unified power quality conditioner (UPQC)","authors":"Mihir Hembram, Ayan Kumar Tudu","doi":"10.1109/C3IT.2015.7060174","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060174","url":null,"abstract":"Power quality has become a crucial factor today due to wide application of power electronics based equipment. Conventional equipment for enhancement of power quality is becoming inadequate. Unified power quality conditioner (UPQC) is one modern device which deals with voltage and current imperfections simultaneously. In this paper, an attempt has been made to model the UPQC for voltage and current compensation with the help of two different control schemes. The current and voltage harmonics as well as voltage sag and swells compensation are shown.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132514914","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}
K. Ghosh, Sudipta Das, S. Ganguly, D. Saha, A. Laha
{"title":"Impact of GaN buffer layer thickness on structural and optical properties of AlGaN/GaN based high electron mobility transistor structure grown on Si(111) substrate by plasma assisted molecular beam epitaxy technique","authors":"K. Ghosh, Sudipta Das, S. Ganguly, D. Saha, A. Laha","doi":"10.1109/C3IT.2015.7060230","DOIUrl":"https://doi.org/10.1109/C3IT.2015.7060230","url":null,"abstract":"AlGaN/GaN based double heterosturcture high electron mobility transistor (HEMT) structures were grown on GaN buffer/Si(111) substrate by plasma assisted molecular beam epitaxy (PAMBE) technique. The thickness of GaN buffer layer was varied to find out the optimum GaN buffer layer for a crack free heterostructure, exhibiting appreciable structural and optical results. Full width at half maximum (FWHM) of GaN (0002) x-ray diffraction (XRD) peak and that of top AlGaN layer was estimated to be as low as 576 arcsec and 396 arcsec respectively. Near band edge photoluminescence (PL) peak for GaN also showed a FWHM of only 21 meV. These studies show that AlGaN/GaN heterostructures epitaxially grown on Si(111) substrate with suitable GaN buffer layer using PAMBE technique are promising for HEMT application.","PeriodicalId":402311,"journal":{"name":"Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)","volume":"223 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999283","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}