2012
Boine-Frankenheim, O; Gjonaj, E; Petrov, F; Yaman, F; Weiland, T; ..., Energy loss and longitudinal wakefield of relativistic short proton bunches in electron clouds Journal Article Physical Review Special Topics-Accelerators and Beams, 15 (5), pp. 54402–54402, 2012. @article{pop00005db, title = {Energy loss and longitudinal wakefield of relativistic short proton bunches in electron clouds}, author = {O Boine-Frankenheim and E Gjonaj and F Petrov and F Yaman and T Weiland and ...}, year = {2012}, date = {2012-01-01}, journal = {Physical Review Special Topics-Accelerators and Beams}, volume = {15}, number = {5}, pages = {54402--54402}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Abdullah, R; Adamatzky, A; Adve, RS; Ahmad, MR; Akan, OB; Alam, M; An, Y; ..., 2012 Index IEEE Transactions on NanoBioscience Vol. 11 Journal Article IEEE Transactions on NanoBioscience, 11 (4), pp. 421–421, 2012. @article{pop00036bb, title = {2012 Index IEEE Transactions on NanoBioscience Vol. 11}, author = {R Abdullah and A Adamatzky and RS Adve and MR Ahmad and OB Akan and M Alam and Y An and ...}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on NanoBioscience}, volume = {11}, number = {4}, pages = {421--421}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Atakan, B; Akan, OB Cognitive Radio Networks: Biologically Inspired Dynamic Spectrum Access Journal Article Encyclopedia of Wireless and Mobile Communications-Three Volume Set, pp. 275–283, 2012. @article{pop00037b, title = {Cognitive Radio Networks: Biologically Inspired Dynamic Spectrum Access}, author = {B Atakan and OB Akan}, year = {2012}, date = {2012-01-01}, journal = {Encyclopedia of Wireless and Mobile Communications-Three Volume Set}, pages = {275--283}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Yaman, F; Ackermann, W; Weiland, T COMPARISON OF EIGENVALUE SOLVERS FOR LARGE SPARSE MATRIX PENCILS Journal Article ICAP, 2012 , pp. 287–289, 2012. @article{pop00011cb, title = {COMPARISON OF EIGENVALUE SOLVERS FOR LARGE SPARSE MATRIX PENCILS}, author = {F Yaman and W Ackermann and T Weiland}, year = {2012}, date = {2012-01-01}, journal = {ICAP}, volume = {2012}, pages = {287--289}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Baştürk, Ilhan; Özbek, Berna Fairness aware resource allocation for downlink MISO-OFDMA systems Inproceedings IEEE Wireless Communications and Networking Conference, WCNC, 2012, ISSN: 15253511. @inproceedings{Basturk2012, title = {Fairness aware resource allocation for downlink MISO-OFDMA systems}, author = {Ilhan Baştürk and Berna Özbek}, doi = {10.1109/WCNC.2012.6214094}, issn = {15253511}, year = {2012}, date = {2012-01-01}, booktitle = {IEEE Wireless Communications and Networking Conference, WCNC}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Çavuşlar, G; Çatay, B; Apaydın, MS A tabu search approach for the NMR protein structure-based assignment problem Journal Article IEEE/ACM transactions on computational biology and bioinformatics 9 (6 …, 2012. @article{pop00010l, title = {A tabu search approach for the NMR protein structure-based assignment problem}, author = {G Çavuşlar and B Çatay and MS Apaydın}, year = {2012}, date = {2012-01-01}, journal = {IEEE/ACM transactions on computational biology and bioinformatics 9 (6 …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Yüksel, Kivilcim; Moeyaert, Véronique; Mégret, Patrice; Wuilpart, Marc Complete analysis of multireflection and spectral-shadowing crosstalks in a quasi-distributed fiber sensor interrogated by OFDR Journal Article IEEE Sensors Journal, 2012, ISSN: 1530437X. @article{Yuksel2012a, title = {Complete analysis of multireflection and spectral-shadowing crosstalks in a quasi-distributed fiber sensor interrogated by OFDR}, author = {Kivilcim Yüksel and Véronique Moeyaert and Patrice Mégret and Marc Wuilpart}, doi = {10.1109/JSEN.2011.2167142}, issn = {1530437X}, year = {2012}, date = {2012-01-01}, journal = {IEEE Sensors Journal}, abstract = {We present the analysis of a quasi-distributed fiber sensor based on the concatenation of identical low-reflective fiber Bragg gratings (FBGs) taking into account both multireflection and spectral-shadowing crosstalks. This allows obtaining more realistic values of the design parameters such as the maximum number of sensing points, the reflectivity of the gratings, and the distance between the sensing points. textcopyright 2001-2012 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We present the analysis of a quasi-distributed fiber sensor based on the concatenation of identical low-reflective fiber Bragg gratings (FBGs) taking into account both multireflection and spectral-shadowing crosstalks. This allows obtaining more realistic values of the design parameters such as the maximum number of sensing points, the reflectivity of the gratings, and the distance between the sensing points. textcopyright 2001-2012 IEEE. |
Özbek, Berna; Ruyet, Didier Le; Pischella, Mylene Reduced feedback links for power minimization in distributed multicell OFDMA networks Inproceedings IEEE International Conference on Communications, 2012, ISSN: 15503607. @inproceedings{Ozbek2012c, title = {Reduced feedback links for power minimization in distributed multicell OFDMA networks}, author = {Berna Özbek and Didier Le Ruyet and Mylene Pischella}, doi = {10.1109/ICC.2012.6363962}, issn = {15503607}, year = {2012}, date = {2012-01-01}, booktitle = {IEEE International Conference on Communications}, abstract = {In the next generation of multicell networks, adaptive resource allocation techniques will play an important role to improve both quality of service and spectral efficiency. In order to employ distributed power allocation for multicell Orthogonal Frequency-Division Multiple Access (OFDMA) networks, the channel state information (CSI) belonging to all users is required to share among base stations. However, the amount of feedback increases with the number of users, base stations and subcarriers. Therefore, it is important to perform a selection at the user side for multicell networks. In this paper, we propose reduced feedback links by choosing the users based on their approximate signal to interference noise ratio (SINR). The performance of the reduced feedback links are illustrated in multicell OFDMA systems.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } In the next generation of multicell networks, adaptive resource allocation techniques will play an important role to improve both quality of service and spectral efficiency. In order to employ distributed power allocation for multicell Orthogonal Frequency-Division Multiple Access (OFDMA) networks, the channel state information (CSI) belonging to all users is required to share among base stations. However, the amount of feedback increases with the number of users, base stations and subcarriers. Therefore, it is important to perform a selection at the user side for multicell networks. In this paper, we propose reduced feedback links by choosing the users based on their approximate signal to interference noise ratio (SINR). The performance of the reduced feedback links are illustrated in multicell OFDMA systems. |
Kinet, D; Yuksel, K; Caucheteur, C; Garray, D; Wuilpart, M; Narbonneau, F; ..., Structural health monitoring of composite materials with fibre Bragg gratings interrogated by optical frequency domain reflectometer Journal Article Proceedings of the European Conference on Composite Materials, Venice, Italy …, 2012. @article{pop00019f, title = {Structural health monitoring of composite materials with fibre Bragg gratings interrogated by optical frequency domain reflectometer}, author = {D Kinet and K Yuksel and C Caucheteur and D Garray and M Wuilpart and F Narbonneau and ...}, year = {2012}, date = {2012-01-01}, journal = {Proceedings of the European Conference on Composite Materials, Venice, Italy …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Yüksel, Kivilcim; Caucheteur, Christophe; Renoirt, Jean Michel; Debliquy, Marc; Mégret, Patrice; Wuilpart, Marc Infrared radiation detector interrogated by optical frequency-domain reflectometer Journal Article Optics and Lasers in Engineering, 2012, ISSN: 01438166. @article{Yuksel2012b, title = {Infrared radiation detector interrogated by optical frequency-domain reflectometer}, author = {Kivilcim Yüksel and Christophe Caucheteur and Jean Michel Renoirt and Marc Debliquy and Patrice Mégret and Marc Wuilpart}, doi = {10.1016/j.optlaseng.2011.11.010}, issn = {01438166}, year = {2012}, date = {2012-01-01}, journal = {Optics and Lasers in Engineering}, abstract = {We experimentally demonstrated a fast infrared (IR) radiation sensor. It is capable of measuring IR radiation independently from the environmental temperature fluctuations. Experimental work shows that this IR detection prototype have strong conveniences (fast response and reliability in harsh environment) compared to previous detectors which makes it a very good option for early fire detection systems. textcopyright 2011 Elsevier Ltd. All rights reserved.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We experimentally demonstrated a fast infrared (IR) radiation sensor. It is capable of measuring IR radiation independently from the environmental temperature fluctuations. Experimental work shows that this IR detection prototype have strong conveniences (fast response and reliability in harsh environment) compared to previous detectors which makes it a very good option for early fire detection systems. textcopyright 2011 Elsevier Ltd. All rights reserved. |
Özbek, Berna; Ruyet, Didier Le Feedback channel designs for fair scheduling in MISO–OFDMA systems Journal Article EURASIP Journal on Wireless Communications and Networking, 2012. @article{Ozbek2012a, title = {Feedback channel designs for fair scheduling in MISO–OFDMA systems}, author = {Berna Özbek and Didier Le Ruyet}, doi = {10.1186/1687-1499-2012-220}, year = {2012}, date = {2012-01-01}, journal = {EURASIP Journal on Wireless Communications and Networking}, abstract = {In the next generation of wireless communication, adaptive resource allocation techniques will play an important role to improve quality of service and spectral efficiency. In order to employ adaptive fairness scheduling for multiple-input single-output (MISO) orthogonal frequency-division multiple access (OFDMA), the channel state information (CSI) belonging to all users is required at the base station. However, the amount of feedback increases with the number of users, transmit antennas and subchannels. Therefore, it is important to perform a user selection at the receiver side without cooperation among the users and to quantize the CSI. In this article, the reduced feedback channel designs are examined for MISO–OFDMA systems while providing fairness between the users. In order to reduce the feedback rate, we choose the users considering their norm and orthogonality properties as well as their location in the cell. In order to limit the feedback rate, channel direction information is quantized by designing a specific codebook thanks to the proposed criterion. We obtain an expression to determine the amount of required feedback information for MISO–OFDMA systems to support more than one beam per subchannel for a given number of users, subchannels and transmit antennas. The performance results of the reduced feedback channel designs are evaluated for fair scheduling in wireless channels.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In the next generation of wireless communication, adaptive resource allocation techniques will play an important role to improve quality of service and spectral efficiency. In order to employ adaptive fairness scheduling for multiple-input single-output (MISO) orthogonal frequency-division multiple access (OFDMA), the channel state information (CSI) belonging to all users is required at the base station. However, the amount of feedback increases with the number of users, transmit antennas and subchannels. Therefore, it is important to perform a user selection at the receiver side without cooperation among the users and to quantize the CSI. In this article, the reduced feedback channel designs are examined for MISO–OFDMA systems while providing fairness between the users. In order to reduce the feedback rate, we choose the users considering their norm and orthogonality properties as well as their location in the cell. In order to limit the feedback rate, channel direction information is quantized by designing a specific codebook thanks to the proposed criterion. We obtain an expression to determine the amount of required feedback information for MISO–OFDMA systems to support more than one beam per subchannel for a given number of users, subchannels and transmit antennas. The performance results of the reduced feedback channel designs are evaluated for fair scheduling in wireless channels. |
Aycan, Esra; Ozbek, Berna Performance of cell selection algorithms in wireless networks Inproceedings 2012. @inproceedings{Aycan2012, title = {Performance of cell selection algorithms in wireless networks}, author = {Esra Aycan and Berna Ozbek}, doi = {10.1109/siu.2012.6204720}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Sertatil, Cem; Altinkaya, Mustafa A; Raoof, Kosai A novel acoustic indoor localization system employing CDMA Journal Article Digital Signal Processing: A Review Journal, 2012, ISSN: 10512004. @article{Sertatil2012, title = {A novel acoustic indoor localization system employing CDMA}, author = {Cem Sertatil and Mustafa A Altinkaya and Kosai Raoof}, doi = {10.1016/j.dsp.2011.12.001}, issn = {10512004}, year = {2012}, date = {2012-01-01}, journal = {Digital Signal Processing: A Review Journal}, abstract = {Nowadays outdoor location systems have been used extensively in all fields of human life from military applications to daily life. However, these systems cannot operate in indoor applications. Hence, this paper considers a novel indoor location system that aims to locate an object within an accuracy of about 2 cm using ordinary and inexpensive off-the-shelf devices and that was designed and tested in an office room to evaluate its performance. In order to compute the distance between the transducers (speakers) and object to be localized (microphone), time-of-arrival measurements of acoustic signals consisting of Binary Phase Shift Keying modulated Gold sequences are performed. This DS-CDMA scheme assures accurate distance measurements and provides immunity to noise and interference. Two methods have been proposed for location estimation. The first method takes the average of four location estimates obtained by trilateration technique. In the second method, only a single robust position estimate is obtained using three distances while the least reliable fourth distance measurement is not taken into account. The system's performance is evaluated at positions from two height levels using system parameters determined by preliminary experiments. The precision distributions in the work area and the precision versus accuracy plots depict the system performance. The proposed system provides location estimates of better than 2 cm accuracy with 99% precision. textcopyright 2011 Elsevier Inc. All rights reserved.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Nowadays outdoor location systems have been used extensively in all fields of human life from military applications to daily life. However, these systems cannot operate in indoor applications. Hence, this paper considers a novel indoor location system that aims to locate an object within an accuracy of about 2 cm using ordinary and inexpensive off-the-shelf devices and that was designed and tested in an office room to evaluate its performance. In order to compute the distance between the transducers (speakers) and object to be localized (microphone), time-of-arrival measurements of acoustic signals consisting of Binary Phase Shift Keying modulated Gold sequences are performed. This DS-CDMA scheme assures accurate distance measurements and provides immunity to noise and interference. Two methods have been proposed for location estimation. The first method takes the average of four location estimates obtained by trilateration technique. In the second method, only a single robust position estimate is obtained using three distances while the least reliable fourth distance measurement is not taken into account. The system's performance is evaluated at positions from two height levels using system parameters determined by preliminary experiments. The precision distributions in the work area and the precision versus accuracy plots depict the system performance. The proposed system provides location estimates of better than 2 cm accuracy with 99% precision. textcopyright 2011 Elsevier Inc. All rights reserved. |
Özbek, Berna; Ruyet, Didier Le Adaptive reduced feedback for fair user scheduling in MISO-OFDMA systems Inproceedings IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2012, ISBN: 9781467309714. @inproceedings{Ozbek2012b, title = {Adaptive reduced feedback for fair user scheduling in MISO-OFDMA systems}, author = {Berna Özbek and Didier Le Ruyet}, doi = {10.1109/SPAWC.2012.6292912}, isbn = {9781467309714}, year = {2012}, date = {2012-01-01}, booktitle = {IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Kilicaslan, Kagan; Altinkaya, Mustafa A Performance analysis of lattice reduction aided MIMO detectors Inproceedings 2012. @inproceedings{Kilicaslan2012, title = {Performance analysis of lattice reduction aided MIMO detectors}, author = {Kagan Kilicaslan and Mustafa A Altinkaya}, doi = {10.1109/siu.2012.6204731}, year = {2012}, date = {2012-01-01}, abstract = {Lattice reduction is a powerful method used in detection and precoding of wireless multiple input-multiple output (MIMO) systems. The basic idea is to consider the channel transfer matrix as a basis for the transmitted symbols. The channel transfer matrix is reduced to a more orthogonal matrix using lattice reduction algorithms. This in turn, improves the performance of conventional MIMO receivers. In this study, it is shown that this performance improvement depends on the modulation order.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } Lattice reduction is a powerful method used in detection and precoding of wireless multiple input-multiple output (MIMO) systems. The basic idea is to consider the channel transfer matrix as a basis for the transmitted symbols. The channel transfer matrix is reduced to a more orthogonal matrix using lattice reduction algorithms. This in turn, improves the performance of conventional MIMO receivers. In this study, it is shown that this performance improvement depends on the modulation order. |
Altinkaya, Mustafa A; Kuruoglu, Ercan E Modeling enzymatic reactions via chemical Langevin-Levy equation Inproceedings 2012. @inproceedings{Altinkaya2012, title = {Modeling enzymatic reactions via chemical Langevin-Levy equation}, author = {Mustafa A Altinkaya and Ercan E Kuruoglu}, doi = {10.1109/siu.2012.6204746}, year = {2012}, date = {2012-01-01}, abstract = {Chemical Langevin Equation (CLE) describes a useful approximation in stochastic modeling of chemical reactions. CLE-based $tau$-leaping algoritm updates the quantities of every molecule in a reaction system with a period of $tau$, firing every reaction in the system so many times that the concentration of each molecule can be assumed to remain in the current concentration state. Substituting the Brownian motion in the CLE with a Levy flight, one might expect the CLE to converge more rapidly. This work shows that alpha (Levy)-stable increments can be used in $tau$-leaping, demonstrating it with the example of a detailed kinetic model describing the enzymatic transgalactosylation reaction during lactulose hydrolysis. textcopyright 2012 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } Chemical Langevin Equation (CLE) describes a useful approximation in stochastic modeling of chemical reactions. CLE-based $tau$-leaping algoritm updates the quantities of every molecule in a reaction system with a period of $tau$, firing every reaction in the system so many times that the concentration of each molecule can be assumed to remain in the current concentration state. Substituting the Brownian motion in the CLE with a Levy flight, one might expect the CLE to converge more rapidly. This work shows that alpha (Levy)-stable increments can be used in $tau$-leaping, demonstrating it with the example of a detailed kinetic model describing the enzymatic transgalactosylation reaction during lactulose hydrolysis. textcopyright 2012 IEEE. |
Karacali, Bilge Hierarchical motif vectors for prediction of functional sites in amino acid sequences using quasi-supervised learning Journal Article IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2012, ISSN: 15455963. @article{Karacali2012, title = {Hierarchical motif vectors for prediction of functional sites in amino acid sequences using quasi-supervised learning}, author = {Bilge Karacali}, doi = {10.1109/TCBB.2012.68}, issn = {15455963}, year = {2012}, date = {2012-01-01}, journal = {IEEE/ACM Transactions on Computational Biology and Bioinformatics}, abstract = {We propose hierarchical motif vectors to represent local amino acid sequence configurations for predicting the functional attributes of amino acid sites on a global scale in a quasi-supervised learning framework. The motif vectors are constructed via wavelet decomposition on the variations of physico-chemical amino acid properties along the sequences. We then formulate a prediction scheme for the functional attributes of amino acid sites in terms of the respective motif vectors using the quasi-supervised learning algorithm that carries out predictions for all sites in consideration using only the experimentally verified sites. We have carried out comparative performance evaluation of the proposed method on the prediction of N-glycosylation of 55,184 sites possessing the consensus N-glycosylation sequon identified over 15,104 human proteins, out of which only 1,939 were experimentally verified N-glycosylation sites. In the experiments, the proposed method achieved better predictive performance than the alternative strategies from the literature. In addition, the predicted N-glycosylation sites showed good agreement with existing potential annotations, while the novel predictions belonged to proteins known to be modified by glycosylation.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We propose hierarchical motif vectors to represent local amino acid sequence configurations for predicting the functional attributes of amino acid sites on a global scale in a quasi-supervised learning framework. The motif vectors are constructed via wavelet decomposition on the variations of physico-chemical amino acid properties along the sequences. We then formulate a prediction scheme for the functional attributes of amino acid sites in terms of the respective motif vectors using the quasi-supervised learning algorithm that carries out predictions for all sites in consideration using only the experimentally verified sites. We have carried out comparative performance evaluation of the proposed method on the prediction of N-glycosylation of 55,184 sites possessing the consensus N-glycosylation sequon identified over 15,104 human proteins, out of which only 1,939 were experimentally verified N-glycosylation sites. In the experiments, the proposed method achieved better predictive performance than the alternative strategies from the literature. In addition, the predicted N-glycosylation sites showed good agreement with existing potential annotations, while the novel predictions belonged to proteins known to be modified by glycosylation. |
Kokturk, Basak Esin; Karacali, Bilge Automated labeling of electroencephalography data using quasi-supervised learning Inproceedings 2012. @inproceedings{Kokturk2012, title = {Automated labeling of electroencephalography data using quasi-supervised learning}, author = {Basak Esin Kokturk and Bilge Karacali}, doi = {10.1109/siu.2012.6204600}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Karacalı, Bilge Hierarchical Motif Vectors for Amino Acid Sequence Alignment Inproceedings 2012. @inproceedings{Karacal2012, title = {Hierarchical Motif Vectors for Amino Acid Sequence Alignment}, author = {Bilge Karacalı}, doi = {10.2316/p.2012.764-055}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Karacali, Bilge Analytical and predictive quasi-supervised learning for cancer recognition in digital cytology Inproceedings 2012. @inproceedings{Karacali2012a, title = {Analytical and predictive quasi-supervised learning for cancer recognition in digital cytology}, author = {Bilge Karacali}, doi = {10.1109/siu.2012.6204467}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Iyasere, E; Salah, M; Dawson, D; Wagner, J; Tatlicioglu, E Optimum seeking-based non-linear controller to maximise energy capture in a variable speed wind turbine Journal Article IET Control Theory & Applications, 6 (4), pp. 526–532, 2012. @article{pop00006cb, title = {Optimum seeking-based non-linear controller to maximise energy capture in a variable speed wind turbine}, author = {E Iyasere and M Salah and D Dawson and J Wagner and E Tatlicioglu}, year = {2012}, date = {2012-01-01}, journal = {IET Control Theory & Applications}, volume = {6}, number = {4}, pages = {526--532}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Özbek, Erdal M; Özkurt, Nalan; Savacı, Acar F Wavelet ridges for musical instrument classification Journal Article Journal of Intelligent Information Systems, 2012, ISSN: 15737675. @article{Ozbek2012d, title = {Wavelet ridges for musical instrument classification}, author = {Erdal M Özbek and Nalan Özkurt and Acar F Savacı}, doi = {10.1007/s10844-011-0152-9}, issn = {15737675}, year = {2012}, date = {2012-01-01}, journal = {Journal of Intelligent Information Systems}, abstract = {The time-varying frequency structure of musical signals have been an- alyzed using wavelets by either extracting the instantaneous frequency of signals or building features from the energies of sub-band coefficients. We propose to benefit from a combination of these two approaches and use the time-frequency domain energy localization curves, called as wavelet ridges, in order to build features for classification of musical instrument sounds. We evaluated the representative capability of our feature in different musical instrument classification problems using support vector machine classifiers. The comparison with the features based on parameterizing the wavelet sub-band energies confirmed the effectiveness of the proposed feature.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The time-varying frequency structure of musical signals have been an- alyzed using wavelets by either extracting the instantaneous frequency of signals or building features from the energies of sub-band coefficients. We propose to benefit from a combination of these two approaches and use the time-frequency domain energy localization curves, called as wavelet ridges, in order to build features for classification of musical instrument sounds. We evaluated the representative capability of our feature in different musical instrument classification problems using support vector machine classifiers. The comparison with the features based on parameterizing the wavelet sub-band energies confirmed the effectiveness of the proposed feature. |
Iyasere, Erhun; Salah, Mohammed H; Dawson, Darren M; Wagner, John R; Tatlicioglu, Enver Robust nonlinear control strategy to maximize energy capture in a variable speed wind turbine with an internal induction generator Journal Article Journal of Control Theory and Applications, 2012, ISSN: 16726340. @article{Iyasere2012, title = {Robust nonlinear control strategy to maximize energy capture in a variable speed wind turbine with an internal induction generator}, author = {Erhun Iyasere and Mohammed H Salah and Darren M Dawson and John R Wagner and Enver Tatlicioglu}, doi = {10.1007/s11768-012-0315-4}, issn = {16726340}, year = {2012}, date = {2012-01-01}, journal = {Journal of Control Theory and Applications}, abstract = {This paper proposes a control strategy to maximize the wind energy captured in a variable speed wind turbine, with an internal induction generator, at low to medium wind speeds. The proposed strategy controls the tip-speed ratio, via the rotor angular speed, to an optimum point at which the efficiency constant (or power coefficient) is maximum for a particular blade pitch angle and wind speed. This control method allows for aerodynamic rotor power maximization without exact wind turbine model knowledge. Representative numerical results demonstrate that the wind turbine can be controlled to achieve near maximum energy capture. textcopyright 2012 South China University of Technology, Academy of Mathematics and Systems Science, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.}, keywords = {}, pubstate = {published}, tppubtype = {article} } This paper proposes a control strategy to maximize the wind energy captured in a variable speed wind turbine, with an internal induction generator, at low to medium wind speeds. The proposed strategy controls the tip-speed ratio, via the rotor angular speed, to an optimum point at which the efficiency constant (or power coefficient) is maximum for a particular blade pitch angle and wind speed. This control method allows for aerodynamic rotor power maximization without exact wind turbine model knowledge. Representative numerical results demonstrate that the wind turbine can be controlled to achieve near maximum energy capture. textcopyright 2012 South China University of Technology, Academy of Mathematics and Systems Science, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg. |
Obuz, S; Tatlicioglu, E; Çekiç, SÇ; Dawson, DM Predictor–Based Robust Control of Uncertain Nonlinear Systems Subject to Input Delay Journal Article IFAC Proceedings Volumes, 45 (14), pp. 231–236, 2012. @article{pop00017b, title = {Predictor–Based Robust Control of Uncertain Nonlinear Systems Subject to Input Delay}, author = {S Obuz and E Tatlicioglu and SÇ Çekiç and DM Dawson}, year = {2012}, date = {2012-01-01}, journal = {IFAC Proceedings Volumes}, volume = {45}, number = {14}, pages = {231--236}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ozan, Sukru; Gumustekin, Sevket Calibration of a 3D environmet scanner with a pair of line lasers Inproceedings 2012. @inproceedings{Ozan2012, title = {Calibration of a 3D environmet scanner with a pair of line lasers}, author = {Sukru Ozan and Sevket Gumustekin}, doi = {10.1109/siu.2012.6204468}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Salah, MH; McIntyre, ML; Dawson, DM; Wagner, JR; Tatlicioglu, E Charge feedback-based robust position tracking control for piezoelectric actuators Journal Article IET control theory & applications, 6 (5), pp. 615–628, 2012. @article{pop00020e, title = {Charge feedback-based robust position tracking control for piezoelectric actuators}, author = {MH Salah and ML McIntyre and DM Dawson and JR Wagner and E Tatlicioglu}, year = {2012}, date = {2012-01-01}, journal = {IET control theory & applications}, volume = {6}, number = {5}, pages = {615--628}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Kapadia, Apoorva D; Walker, Ian D; Tatlicioglu, Enver Teleoperation control of a redundant continuum manipulator using a non-redundant rigid-link master Inproceedings IEEE International Conference on Intelligent Robots and Systems, 2012, ISSN: 21530858. @inproceedings{Kapadia2012, title = {Teleoperation control of a redundant continuum manipulator using a non-redundant rigid-link master}, author = {Apoorva D Kapadia and Ian D Walker and Enver Tatlicioglu}, doi = {10.1109/IROS.2012.6385990}, issn = {21530858}, year = {2012}, date = {2012-01-01}, booktitle = {IEEE International Conference on Intelligent Robots and Systems}, abstract = {In this paper, teleoperated control of a kinematically redundant, continuum slave manipulator with a non-redundant, rigid-link master system is considered. This problem is novel because the self-motion of the redundant robot can be utilized to achieve secondary control objectives while allowing the user to concentrate on controlling only the tip of the slave system. To that end, feedback linearizing controllers are proposed for both the master and slave systems, whose effectiveness is demonstrated using numerical simulations for the case of singularity avoidance as a subtask.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } In this paper, teleoperated control of a kinematically redundant, continuum slave manipulator with a non-redundant, rigid-link master system is considered. This problem is novel because the self-motion of the redundant robot can be utilized to achieve secondary control objectives while allowing the user to concentrate on controlling only the tip of the slave system. To that end, feedback linearizing controllers are proposed for both the master and slave systems, whose effectiveness is demonstrated using numerical simulations for the case of singularity avoidance as a subtask. |
Erdalözbek, Mehmet; Emrecek, Mehmet; Savaci, Ferit Acar Skewed alpha-stable distributions for modeling and classification of musical instruments Journal Article Turkish Journal of Electrical Engineering and Computer Sciences, 2012, ISSN: 13000632. @article{Erdalozbek2012, title = {Skewed alpha-stable distributions for modeling and classification of musical instruments}, author = {Mehmet Erdalözbek and Mehmet Emrecek and Ferit Acar Savaci}, doi = {10.3906/elk-1102-1031}, issn = {13000632}, year = {2012}, date = {2012-01-01}, journal = {Turkish Journal of Electrical Engineering and Computer Sciences}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ozan, Ş; Gümüştekin, Ş Çi̇ft çi̇zgi̇sel lazerli̇ bi̇r 3B ortam tarayıcısının kabli̇brasyonu Journal Article IEEE, 2012. @article{pop00023f, title = {Çi̇ft çi̇zgi̇sel lazerli̇ bi̇r 3B ortam tarayıcısının kabli̇brasyonu}, author = {Ş Ozan and Ş Gümüştekin}, year = {2012}, date = {2012-01-01}, journal = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Seker, M; Zergeroglu, E; Tatlicioglu, E Robust Backstepping Control of Variable Speed Wind Turbines with Permanent Magnet Synchronous Generators Journal Article Multi-Conference on Systems and Control, pp. 1068–1073, 2012. @article{pop00030c, title = {Robust Backstepping Control of Variable Speed Wind Turbines with Permanent Magnet Synchronous Generators}, author = {M Seker and E Zergeroglu and E Tatlicioglu}, year = {2012}, date = {2012-01-01}, journal = {Multi-Conference on Systems and Control}, pages = {1068--1073}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Savaci, FA; Güngör, M Estimating probability density functions and entropies of chua's circuit using b-spline functions Journal Article International Journal of Bifurcation and Chaos, 22 (5), pp. 1250107–1250107, 2012. @article{pop00035cb, title = {Estimating probability density functions and entropies of chua's circuit using b-spline functions}, author = {FA Savaci and M Güngör}, year = {2012}, date = {2012-01-01}, journal = {International Journal of Bifurcation and Chaos}, volume = {22}, number = {5}, pages = {1250107--1250107}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Goceri, E; Unlu, MZ; Guzelis, C; Dicle, O An automatic level set based liver segmentation from MRI data sets Journal Article 2012 3rd international conference on image processing theory, tools and …, 2012. @article{pop00005g, title = {An automatic level set based liver segmentation from MRI data sets}, author = {E Goceri and MZ Unlu and C Guzelis and O Dicle}, year = {2012}, date = {2012-01-01}, journal = {2012 3rd international conference on image processing theory, tools and …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ozyetkin, MM; Nath, N; Tatlicioglu, E; Dawson, DM A New Robust Nonlinear Control Algorithm for the Regulation of Blood Glucose in Diabetic Patients Journal Article Multi-Conference on Systems and Control, pp. 1057–1061, 2012. @article{pop00040c, title = {A New Robust Nonlinear Control Algorithm for the Regulation of Blood Glucose in Diabetic Patients}, author = {MM Ozyetkin and N Nath and E Tatlicioglu and DM Dawson}, year = {2012}, date = {2012-01-01}, journal = {Multi-Conference on Systems and Control}, pages = {1057--1061}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Nath, Nitendra; Dawson, Darren M; Tatlicioglu, Enver Euclidean position estimation of static features using a moving uncalibrated camera Journal Article IEEE Transactions on Control Systems Technology, 2012, ISSN: 10636536. @article{Nath2012, title = {Euclidean position estimation of static features using a moving uncalibrated camera}, author = {Nitendra Nath and Darren M Dawson and Enver Tatlicioglu}, doi = {10.1109/TCST.2011.2120610}, issn = {10636536}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on Control Systems Technology}, abstract = {In this paper, a novel Euclidean position estimation technique using a single uncalibrated camera mounted on amoving platform is developed to asymptotically recover the 3-D Euclidean position of static object features. The position of the moving plat- form is assumed to be measurable, and a second object with known 3-D Euclidean coordinates relative to theworld frame is considered to be available a priori. To account for the unknown camera cali- bration parameters and to estimate the unknown 3-D Euclidean coordinates, an adaptive least squares estimation strategy is em- ployed based on prediction error formulations and a Lyapunov- type stability analysis. The developed estimator is shownto recover the 3-D Euclidean position of the unknown object features despite the lack of knowledge of the camera calibration parameters. Nu- merical simulation results along with experimental results are pre- sented}, keywords = {}, pubstate = {published}, tppubtype = {article} } In this paper, a novel Euclidean position estimation technique using a single uncalibrated camera mounted on amoving platform is developed to asymptotically recover the 3-D Euclidean position of static object features. The position of the moving plat- form is assumed to be measurable, and a second object with known 3-D Euclidean coordinates relative to theworld frame is considered to be available a priori. To account for the unknown camera cali- bration parameters and to estimate the unknown 3-D Euclidean coordinates, an adaptive least squares estimation strategy is em- ployed based on prediction error formulations and a Lyapunov- type stability analysis. The developed estimator is shownto recover the 3-D Euclidean position of the unknown object features despite the lack of knowledge of the camera calibration parameters. Nu- merical simulation results along with experimental results are pre- sented |
Atakan, Baris; Akan, Ozgur B; Balasubramaniam, Sasitharan Body area nanonetworks with molecular communications in nanomedicine Inproceedings IEEE Communications Magazine, 2012, ISSN: 01636804. @inproceedings{Atakan2012, title = {Body area nanonetworks with molecular communications in nanomedicine}, author = {Baris Atakan and Ozgur B Akan and Sasitharan Balasubramaniam}, doi = {10.1109/MCOM.2012.6122529}, issn = {01636804}, year = {2012}, date = {2012-01-01}, booktitle = {IEEE Communications Magazine}, abstract = {Recent developments in nano and biotechnology enable promising therapeutic nanomachines (NMs) that operate on inter- or intracellular area of human body. The networks of such therapeutic NMs, body area nanonetworks (BAN 2s), also empower sophisticated nanomedicine applications. In these applications, therapeutic NMs share information to perform computation and logic operations, and make decisions to treat complex diseases. Hence, one of the most challenging subjects for these sophisticated applications is the realization of BAN 2 through a nanoscale communication paradigm. In this article, we introduce the concept of a BAN 2 with molecular communication, where messenger molecules are used as communication carrier from a sender to a receiver NM. The current state of the art of molecular communication and BAN 2 in nanomedicine applications is first presented. Then communication theoretical efforts are reviewed, and open research issues are given. The objective of this work is to introduce this novel and interdisciplinary research field and highlight major barriers toward its realization from the viewpoint of communication theory. textcopyright 2012 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } Recent developments in nano and biotechnology enable promising therapeutic nanomachines (NMs) that operate on inter- or intracellular area of human body. The networks of such therapeutic NMs, body area nanonetworks (BAN 2s), also empower sophisticated nanomedicine applications. In these applications, therapeutic NMs share information to perform computation and logic operations, and make decisions to treat complex diseases. Hence, one of the most challenging subjects for these sophisticated applications is the realization of BAN 2 through a nanoscale communication paradigm. In this article, we introduce the concept of a BAN 2 with molecular communication, where messenger molecules are used as communication carrier from a sender to a receiver NM. The current state of the art of molecular communication and BAN 2 in nanomedicine applications is first presented. Then communication theoretical efforts are reviewed, and open research issues are given. The objective of this work is to introduce this novel and interdisciplinary research field and highlight major barriers toward its realization from the viewpoint of communication theory. textcopyright 2012 IEEE. |
Guney, Aydin; Atakan, Baris; Akan, Ozgur B Mobile ad hoc nanonetworks with collision-based molecular communication Journal Article IEEE Transactions on Mobile Computing, 2012, ISSN: 15361233. @article{Guney2012, title = {Mobile ad hoc nanonetworks with collision-based molecular communication}, author = {Aydin Guney and Baris Atakan and Ozgur B Akan}, doi = {10.1109/TMC.2011.53}, issn = {15361233}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on Mobile Computing}, abstract = {Recent developments in nanotechnology have enabled the fabrication of nanomachines with very limited sensing, computation, communication, and action capabilities. The network of communicating nanomachines is envisaged as nanonetworks that are designed to accomplish complex tasks such as drug delivery and health monitoring. For the realization of future nanonetworks, it is essential to develop novel and efficient communication and networking paradigms. In this paper, the first step toward designing a mobile ad hoc molecular nanonetwork (MAMNET) with electrochemical communication is taken. MAMNET consists of mobile nanomachines and infostations that share nanoscale information using electrochemical communication whenever they have a physical contact with each other. In MAMNET, the intermittent connectivity introduced by the mobility of nanomachines and infostations is a critical issue to be addressed. An analytical framework that incorporates the effect of mobility into the performance of electrochemical communication among nanomachines is presented. Using the analytical model, numerical analysis for the performance evaluation of MAMNET is obtained. Results reveal that MAMNET achieves adequately high throughput to enable frontier nanonetwork applications with acceptable communication latency. View full abstract}, keywords = {}, pubstate = {published}, tppubtype = {article} } Recent developments in nanotechnology have enabled the fabrication of nanomachines with very limited sensing, computation, communication, and action capabilities. The network of communicating nanomachines is envisaged as nanonetworks that are designed to accomplish complex tasks such as drug delivery and health monitoring. For the realization of future nanonetworks, it is essential to develop novel and efficient communication and networking paradigms. In this paper, the first step toward designing a mobile ad hoc molecular nanonetwork (MAMNET) with electrochemical communication is taken. MAMNET consists of mobile nanomachines and infostations that share nanoscale information using electrochemical communication whenever they have a physical contact with each other. In MAMNET, the intermittent connectivity introduced by the mobility of nanomachines and infostations is a critical issue to be addressed. An analytical framework that incorporates the effect of mobility into the performance of electrochemical communication among nanomachines is presented. Using the analytical model, numerical analysis for the performance evaluation of MAMNET is obtained. Results reveal that MAMNET achieves adequately high throughput to enable frontier nanonetwork applications with acceptable communication latency. View full abstract |
Atakan, Baris; à, Sebasti; Akan, Ozgur B Nanoscale communication with molecular arrays in nanonetworks Journal Article IEEE Transactions on Nanobioscience, 2012, ISSN: 15361241. @article{Atakan2012a, title = {Nanoscale communication with molecular arrays in nanonetworks}, author = {Baris Atakan and Sebasti à and Ozgur B Akan}, doi = {10.1109/TNB.2011.2181862}, issn = {15361241}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on Nanobioscience}, abstract = {Molecular communication is a promising nanoscale communication paradigm that enables nanomachines to exchange information by using molecules as communication carrier. Up to now, the molecular communication channel between a transmitter nanomachine (TN) and a receiver nanomachine (RN) has been modeled as either concentration channel or timing channel. However, these channel models necessitate exact time synchronization of the nanomachines and provide a relatively low communication bandwidth. In this paper, the Molecular ARray-based COmmunication (MARCO) scheme is proposed, in which the transmission order of different molecules is used to convey molecular information without any need for time synchronization. The MARCO channel model is first theoretically derived, and the intersymbol interference and error probabilities are obtained. Based on the error probability, achievable communication rates are analytically obtained. Numerical results and performance comparisons reveal that MARCO provides significantly higher communication rate, i.e., on the scale of 100 Kbps, than the previously proposed molecular communication models without any need for synchronization. More specifically, MARCO can provide more than 250 Kbps of molecular communication rate if intersymbol time and internode distance are set to 2 $mu$s and 2 nm, respectively. textcopyright 2011 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Molecular communication is a promising nanoscale communication paradigm that enables nanomachines to exchange information by using molecules as communication carrier. Up to now, the molecular communication channel between a transmitter nanomachine (TN) and a receiver nanomachine (RN) has been modeled as either concentration channel or timing channel. However, these channel models necessitate exact time synchronization of the nanomachines and provide a relatively low communication bandwidth. In this paper, the Molecular ARray-based COmmunication (MARCO) scheme is proposed, in which the transmission order of different molecules is used to convey molecular information without any need for time synchronization. The MARCO channel model is first theoretically derived, and the intersymbol interference and error probabilities are obtained. Based on the error probability, achievable communication rates are analytically obtained. Numerical results and performance comparisons reveal that MARCO provides significantly higher communication rate, i.e., on the scale of 100 Kbps, than the previously proposed molecular communication models without any need for synchronization. More specifically, MARCO can provide more than 250 Kbps of molecular communication rate if intersymbol time and internode distance are set to 2 $mu$s and 2 nm, respectively. textcopyright 2011 IEEE. |
Atakan, Baris; Akan, Ozgur B Biological foraging-inspired communication in intermittently connected mobile cognitive radio ad hoc networks Journal Article IEEE Transactions on Vehicular Technology, 2012, ISSN: 00189545. @article{Atakan2012b, title = {Biological foraging-inspired communication in intermittently connected mobile cognitive radio ad hoc networks}, author = {Baris Atakan and Ozgur B Akan}, doi = {10.1109/TVT.2012.2198928}, issn = {00189545}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on Vehicular Technology}, abstract = {Intermittently connected mobile cognitive radio ad hoc networks (IMCRNs) are promising wireless networks in which mobile unlicensed nodes use their temporarily available contacts and vacant licensed channels for end-to-end message delivery. In this paper, we propose biological foraging-inspired communication (BFC) algorithm for the energy-efficient and spectrum-aware communication requirements in IMCRNs. BFC is based on two profitability measures called relay selection profitability (RSP) and channel selection profitability (CSP). RSP and CSP provide an autonomous decision-making mechanism that does not need any a priori information on node mobility and spectrum availability patterns. This decision-making mechanism also leads to an optimization procedure to determine optimal relay and channel selection rules. Performance evaluations reveal that BFC enables each node to determine and regulate its transmission strategy to provide minimum energy consumption without sacrificing end-to-end delay performance. BFC also maximizes overall spectrum utilization in a way that any idle channel is always allocated by a node within a delay bound. [ABSTRACT FROM PUBLISHER]}, keywords = {}, pubstate = {published}, tppubtype = {article} } Intermittently connected mobile cognitive radio ad hoc networks (IMCRNs) are promising wireless networks in which mobile unlicensed nodes use their temporarily available contacts and vacant licensed channels for end-to-end message delivery. In this paper, we propose biological foraging-inspired communication (BFC) algorithm for the energy-efficient and spectrum-aware communication requirements in IMCRNs. BFC is based on two profitability measures called relay selection profitability (RSP) and channel selection profitability (CSP). RSP and CSP provide an autonomous decision-making mechanism that does not need any a priori information on node mobility and spectrum availability patterns. This decision-making mechanism also leads to an optimization procedure to determine optimal relay and channel selection rules. Performance evaluations reveal that BFC enables each node to determine and regulate its transmission strategy to provide minimum energy consumption without sacrificing end-to-end delay performance. BFC also maximizes overall spectrum utilization in a way that any idle channel is always allocated by a node within a delay bound. [ABSTRACT FROM PUBLISHER] |
Atakan, B; Akan, OB Bio-Inspired Cross-Layer Communication and Coordination in Sensor and Vehicular Actor Networks Journal Article IEEE Transactions on Vehicular Technology, 61 (5), pp. 2185–2193, 2012. @article{pop00027b, title = {Bio-Inspired Cross-Layer Communication and Coordination in Sensor and Vehicular Actor Networks}, author = {B Atakan and OB Akan}, year = {2012}, date = {2012-01-01}, journal = {IEEE Transactions on Vehicular Technology}, volume = {61}, number = {5}, pages = {2185--2193}, keywords = {}, pubstate = {published}, tppubtype = {article} } |