{"title":"Classification of electrocorticography based motor imagery movements using continuous wavelet transform","authors":"M. R. Islam, U. Fatema, M. Bhuiyan, S. Bashar","doi":"10.1109/TECHSYM.2016.7872647","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872647","url":null,"abstract":"Recently electrocorticography (ECoG) has emerged as a potential tool for Brain Computer Interfacing applications. In this paper, a continuous wavelet transform (CWT) based method is proposed for classifying ECoG motor imagery signals corresponding to left pinky and tongue movement. The total experiment is carried out with the publicly available benchmark BCI competition III, data set I. The L2 norms of the CWT coefficients obtained from ECoG signals are shown to be separable for the two classes of motor imagery signals. Then the L2 norm based features are subjected to principal component analysis, yielding a feature set with lower dimension. Among various types of classifiers used, support vector machine based classifiers have been shown to provide a good accuracy of 92% which is shown to be better than several existing techniques. In addition, unlike most of the existing methods, our proposed method involves no pre-processing and thus can have better potential for practical implementation while requiring much lower computational time in extracting the features.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114965305","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}
S. Karri, Niladri Garai, Debaleena Nawn, Sambuddha Ghosh, Debjani Chakraborty, J. Chatterjee
{"title":"Retinal layer delineation through learning of tissue photon interaction in optical coherence tomography","authors":"S. Karri, Niladri Garai, Debaleena Nawn, Sambuddha Ghosh, Debjani Chakraborty, J. Chatterjee","doi":"10.1109/TECHSYM.2016.7872653","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872653","url":null,"abstract":"Optical coherence tomography (OCT) is widely used in Ophthalmology for visualizing retinal layers and cornea width profiles which are indexed to various pathologies. Image processing algorithms have been deployed to automatically delineate various layers for autonomous width profiles computation. Classical OCT segmentation algorithms are anchored around gradient and its derivatives. Such pixel information can vary from subject to subject so prior approximations of different layers are imposed in the name of regularization. Regularization restrains the generalization capability of the model which is crucial for segmentation in pathological subjects. The presented approach aims to model signal interactions with a tissue type through back scattered signal characteristics. During prediction phase, given an unknown interaction, the model estimates the probability of signal being backscattered from a tissue type. Sensor's ballistic models are employed to estimate the uncompressed signal statistics. These models have been experimented and evaluated on 5000 AMD (age-related macular degeneration) and 5000 normal B-scans from Duke OCT dataset. With two percent training data the delineation results are comparable to graph based approaches. The anterior retina, retinal pigment epithelium (RPE) and posterior retina are identified with sensitivity of 0.87, 0.84 and 0.91 respectively.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457530","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":"Investigation of surface wave modes on ungrounded electrically thick ceramic alumina substrate at 60 GHz","authors":"A. Jaiswal, M. Abegaonkar, S. Koul","doi":"10.1109/TECHSYM.2016.7872650","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872650","url":null,"abstract":"Propagation of surface waves modes on ungrounded dielectric slab of ceramic alumina with εr= 9.8 and 635 μm of electrically thick height at 60 GHz is explored. An approximate graphical technique is implemented to determine the unknown propagation constants kx and α, to achieve a solution for Helmholtz wave equations, for each TE and TM modes. It also indeed provides a physical insight of existing no. of modes and their dependence on permittivity and height of substrate. Cut-off frequency for all propagating modes is calculated and dispersion graph with propagation constant is plotted. A CPW fed monopole antenna, designed and fabricated at 60 GHz, is found to be affected by the presence of surface wave modes on its radiation characteristics. A tilt of 40° is found in E-plane radiation pattern which certainly evidence the presence of surface wave modes at 60 GHz.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128381713","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 tunable CPW spurline filter employing distributed MEMS switches","authors":"K. Jose, M. Baiju","doi":"10.1109/TECHSYM.2016.7872688","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872688","url":null,"abstract":"The present work uses MEMS switches for electrostatic control of centre frequency and bandwidth in a Coplanar Waveguide (CPW) Spurline filter. The filter consists of short end series stub resonators etched in the signal line of CPW. MEMS capacitive shunt switches are loaded across the stubs and across the inter resonator spaces and actuation of the switches alter the effective electrical length of the stub sections and the inter resonator spaces. This leads to variation in frequency response. The design of the MEMS switches is also presented. This is based on modeling the variation in effective electrical length due to the loading by the MEMS shunt switches. The switch capacitances over stubs are calculated with a reduced effective width to account for the etched stubs.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129366754","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}
Eshwari Dathathri, R. Nayak, J. Philip, G. Thakur, K. Koteshwara
{"title":"A comparative release study of curcumin and diclofenac sodium from genipin cross-linked composite hydrogel","authors":"Eshwari Dathathri, R. Nayak, J. Philip, G. Thakur, K. Koteshwara","doi":"10.1109/TECHSYM.2016.7872664","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872664","url":null,"abstract":"A composite hydrogel, using chitosan and gelatin was formulated. Chitosan-gelatin hydrogel in ratio 0.5:1 was prepared in lactic acid (2%). The poor mechanical strength of the gel was overcome by crosslinking with 1% (w/v) genipin solution. The properties of composite hydrogel were tested based on the characterizations performed. Swelling test was performed by immersing cross-linked hydrogels in water for 20 hours and swelling indices were calculated. Infrared (IR) spectroscopy was done to ensure presence of crosslinking. In-vitro release of uncross-linked and crosslinked hydrogels were performed and subsequently, release kinetics of two drugs: curcumin (weak base) and diclofenac sodium (weak acid) were studied. Cumulative release was carried out in deionized water for 30 hours for both the drugs and was analyzed spectrophotometrically at 265nm for curcumin and 276nm for diclofenac sodium. Cross-linked hydrogel showed swelling of 99.28±0.04% for 20 hours. Release profile of curcumin loaded cross-linked hydrogel showed sustained release of about 80.04±0.54% over 30 hours; found best fit with Higuchi model following anomalous transport (n=0.90), while diclofenac sodium loaded cross-linked gel exhibited sustained release of about 71.72±0.04 % over 30 hours; found best fit with Higuchi model following Fickian diffusion (n=0.45). Overall, the results indicated that the cross-linked composite hydrogel could be tuned as a carrier for the transport of both acidic and basic biomolecules.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132036162","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":"Selection of path and wavelength for setting up a free space optical link","authors":"Y. K. Kanth, S. Majhi, Sumanta Gupta","doi":"10.1109/TECHSYM.2016.7872649","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872649","url":null,"abstract":"In this paper, we investigate how to determine the optimal path and the wavelength for setting up a free space optical (FSO) link at our college campus. We consider serial relay assisted FSO system, employing both decode-and-forward and amplify-and-forward modes. We consider an aggregated channel model that considers both path-loss and turbulence induced lognormal fading. We derive outage probability for the relaying scheme under consideration and then find outage probability of all the available paths at different wavelengths to determine the optimal path and the wavelength.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134048613","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}
Nitesh Chauhan, Mayank Soni, V. Anand, Vivek Kanhangad
{"title":"Fingerprint classification using crease features","authors":"Nitesh Chauhan, Mayank Soni, V. Anand, Vivek Kanhangad","doi":"10.1109/TECHSYM.2016.7872655","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872655","url":null,"abstract":"Existing fingerprint classification techniques make use of Level-1 or Level-2 features or their combination for fingerprint classification. On the other hand, Level-3 features have not been explored much for fingerprint classification. Specifically, the use of crease for fingerprint classification does not exist in the literature. In this work, we explore the use of crease features for fingerprint classification. Experiments are performed on the publicly available Hong Kong PolyU high-resolution fingerprint database DBII. Our experimental results are very encouraging and indicate that creases have huge potential to improve the performance of fingerprint classification.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"52 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133239763","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 framework for analyzing community detection algorithms","authors":"A. Biswas, Bhaskar Biswas","doi":"10.1109/TECHSYM.2016.7872656","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872656","url":null,"abstract":"Evaluation of community detection algorithms is very important to ensure both accuracy and quality of identified communities. Measuring quality incorporates edges, while measuring accuracy involves node labels. Due to this fundamental difference between accuracy and quality, often the evaluation process confronts with the issues such as trade-off between the two. In addition, real world networks such as social networks are of unknown structure and complex. Accuracy of communities detected with any algorithm for these networks cannot be measured due to unavailability of ground truth. In such cases, the algorithms are certainly more likely to predict accurate communities that show higher inclination towards accuracy in the networks where ground truths are available. In this paper, a framework is proposed to analyze Relative Inclination Towards accuracy (RITA) of a set of community detection algorithms. The RITA analysis gives an intuition about how likely an algorithm would produce accurate communities in the networks where ground truth is not available. Moreover, the RITA analysis overcomes trade-off between accuracy and quality by incorporating both into a common platform. Results on variety of networks show the competency of proposed framework in dealing with the trade-off during analysis.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129681636","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 SSRR based multiband reconfigurable monopole antenna","authors":"A. Gangwar, M. S. Alam","doi":"10.1109/TECHSYM.2016.7872683","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872683","url":null,"abstract":"In this paper a compact size reconfigurable multiband antenna is presented. The design is based on straight line monopole with two single split ring resonators (SSRRs) at both sides of monopole. The straight line strip (i. e. monopole) and resonators are magnetically coupled and overall structure resonates at three frequency bands, thus can behave as tri-band antenna. In order to achieve re-configurability in the antenna, electronic switches are used across the resonator for activating or deactivating the particular resonant frequency. Keysight ADS software is used to design and simulate the antenna. The designed antenna is fabricated on 30×30 mm FR4 substrate with relative permittivity 4.6 and thickness of 1.6mm. The simulated and experimental results are closely matched.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122317076","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":"Application of the Chinese remainder theorem for source location privacy in wireless sensor networks","authors":"R. Manjula, R. Datta","doi":"10.1109/TECHSYM.2016.7872682","DOIUrl":"https://doi.org/10.1109/TECHSYM.2016.7872682","url":null,"abstract":"In this paper, we investigate an application of the Chinese Remainder Theorem (CRT) for a novel privacy preserving routing technique in wireless sensor networks (WSNs). The distinctive nature of the proposed technique is gathering the data, aggregating and then slicing the aggregate using t-out-of-n secret sharing scheme (based on CRT) and then route the packets to the sink via multiple paths. The sink will recover the final aggregate with just t shares using CRT. The multi-objective of the proposed technique is to provide data privacy, identity privacy, source location privacy, and route privacy. The solution also mitigates the problem of packet losses associated with the unreliable wireless communication medium by improving the reliability. We also propose an enhanced privacy preserving routing technique that achieves network wide routing paths, and overcomes the drawback of existing phantom single-path routing (PSPR) and forward random walk-based routing (FRW) schemes. Finally, we present the details of the proposed technique with a numerical example and give its possible application for secret and dynamic routing in WSNs. We also show the simulation results to validate the proposed method and comparison with PSPR and FRW techniques demonstrates that our scheme outperforms the other two solutions.","PeriodicalId":403350,"journal":{"name":"2016 IEEE Students’ Technology Symposium (TechSym)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123880879","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}