2016
Güzel, Başak Esin Köktürk; Karacalı, Bilge Fisher's Linear Discriminant Analysis Based Prediction using Transient Features of Seismic Events in Coal Mines Inproceedings Proceedings of the 2016 Federated Conference on Computer Science and Information Systems, 2016. @inproceedings{Guzel2016, title = {Fisher's Linear Discriminant Analysis Based Prediction using Transient Features of Seismic Events in Coal Mines}, author = {Başak Esin Köktürk Güzel and Bilge Karacalı}, doi = {10.15439/2016f116}, year = {2016}, date = {2016-01-01}, booktitle = {Proceedings of the 2016 Federated Conference on Computer Science and Information Systems}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Lee, Kyu-Tae; Yao, Yuan; He, Junwen; Fisher, Brent; Sheng, Xing; Lumb, Matthew; Xu, Lu; Anderson, Mikayla A; Scheiman, David; Han, Seungyong; Kang, Yongseon; Gumus, Abdurrahman; Bahabry, Rabab R; Lee, Jung Woo; Paik, Ungyu; Bronstein, Noah D; Alivisatos, Paul A; Meitl, Matthew; Burroughs, Scott; Hussain, Muhammad Mustafa; Lee, Jeong Chul; Nuzzo, Ralph G; Rogers, John A Concentrator photovoltaic module architectures with capabilities for capture and conversion of full global solar radiation Journal Article Proceedings of the National Academy of Sciences, 2016, ISSN: 0027-8424. @article{Lee2016, title = {Concentrator photovoltaic module architectures with capabilities for capture and conversion of full global solar radiation}, author = {Kyu-Tae Lee and Yuan Yao and Junwen He and Brent Fisher and Xing Sheng and Matthew Lumb and Lu Xu and Mikayla A Anderson and David Scheiman and Seungyong Han and Yongseon Kang and Abdurrahman Gumus and Rabab R Bahabry and Jung Woo Lee and Ungyu Paik and Noah D Bronstein and Paul A Alivisatos and Matthew Meitl and Scott Burroughs and Muhammad Mustafa Hussain and Jeong Chul Lee and Ralph G Nuzzo and John A Rogers}, doi = {10.1073/pnas.1617391113}, issn = {0027-8424}, year = {2016}, date = {2016-01-01}, journal = {Proceedings of the National Academy of Sciences}, abstract = {Emerging classes of concentrator photovoltaic (CPV) modules reach efficiencies that are far greater than those of even the highest performance flat-plate PV technologies, with architectures that have the potential to provide the lowest cost of energy in locations with high direct normal irradiance (DNI). A disadvantage is their inability to effectively use diffuse sunlight, thereby constraining widespread geographic deployment and limiting performance even under the most favorable DNI conditions. This study introduces a module design that integrates capabilities in flat-plate PV directly with the most sophisticated CPV technologies, for capture of both direct and diffuse sunlight, thereby achieving efficiency in PV conversion of the global solar radiation. Specific examples of this scheme exploit commodity silicon (Si) cells integrated with two different CPV module designs, where they capture light that is not efficiently directed by the concentrator optics onto large-scale arrays of miniature multijunction (MJ) solar cells that use advanced III–V semiconductor technologies. In this CPV + scheme (“+” denotes the addition of diffuse collector), the Si and MJ cells operate independently on indirect and direct solar radiation, respectively. On-sun experimental studies of CPV + modules at latitudes of 35.9886° N (Durham, NC), 40.1125° N (Bondville, IL), and 38.9072° N (Washington, DC) show improvements in absolute module efficiencies of between 1.02% and 8.45% over values obtained using otherwise similar CPV modules, depending on weather conditions. These concepts have the potential to expand the geographic reach and improve the cost-effectiveness of the highest efficiency forms of PV power generation.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Emerging classes of concentrator photovoltaic (CPV) modules reach efficiencies that are far greater than those of even the highest performance flat-plate PV technologies, with architectures that have the potential to provide the lowest cost of energy in locations with high direct normal irradiance (DNI). A disadvantage is their inability to effectively use diffuse sunlight, thereby constraining widespread geographic deployment and limiting performance even under the most favorable DNI conditions. This study introduces a module design that integrates capabilities in flat-plate PV directly with the most sophisticated CPV technologies, for capture of both direct and diffuse sunlight, thereby achieving efficiency in PV conversion of the global solar radiation. Specific examples of this scheme exploit commodity silicon (Si) cells integrated with two different CPV module designs, where they capture light that is not efficiently directed by the concentrator optics onto large-scale arrays of miniature multijunction (MJ) solar cells that use advanced III–V semiconductor technologies. In this CPV + scheme (“+” denotes the addition of diffuse collector), the Si and MJ cells operate independently on indirect and direct solar radiation, respectively. On-sun experimental studies of CPV + modules at latitudes of 35.9886° N (Durham, NC), 40.1125° N (Bondville, IL), and 38.9072° N (Washington, DC) show improvements in absolute module efficiencies of between 1.02% and 8.45% over values obtained using otherwise similar CPV modules, depending on weather conditions. These concepts have the potential to expand the geographic reach and improve the cost-effectiveness of the highest efficiency forms of PV power generation. |
Sevilla, GA Torres; Almuslem, AS; Gumus, A; Hussain, AM; Cruz, ME; ..., High performance high-κ/metal gate complementary metal oxide semiconductor circuit element on flexible silicon Journal Article Applied Physics Letters, 108 (9), pp. 94102–94102, 2016. @article{pop00006hb, title = {High performance high-κ/metal gate complementary metal oxide semiconductor circuit element on flexible silicon}, author = {GA Torres Sevilla and AS Almuslem and A Gumus and AM Hussain and ME Cruz and ...}, year = {2016}, date = {2016-01-01}, journal = {Applied Physics Letters}, volume = {108}, number = {9}, pages = {94102--94102}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Gumus, Abdurrahman; Ahsan, Syed; Dogan, Belgin; Jiang, Li; Snodgrass, Ryan; Gardner, Andrea; Lu, Zhengda; Simpson, Kenneth; Erickson, David Solar-thermal complex sample processing for nucleic acid based diagnostics in limited resource settings Journal Article Biomedical Optics Express, 2016, ISSN: 2156-7085. @article{Gumus2016, title = {Solar-thermal complex sample processing for nucleic acid based diagnostics in limited resource settings}, author = {Abdurrahman Gumus and Syed Ahsan and Belgin Dogan and Li Jiang and Ryan Snodgrass and Andrea Gardner and Zhengda Lu and Kenneth Simpson and David Erickson}, doi = {10.1364/boe.7.001974}, issn = {2156-7085}, year = {2016}, date = {2016-01-01}, journal = {Biomedical Optics Express}, abstract = {The use of point-of-care (POC) devices in limited resource settings where access to commonly used infrastructure, such as water and electricity, can be restricted represents simultaneously one of the best application fits for POC systems as well as one of the most challenging places to deploy them. Of the many challenges involved in these systems, the preparation and processing of complex samples like stool, vomit, and biopsies are particularly difficult due to the high number and varied nature of mechanical and chemical interferents present in the sample. Previously we have demonstrated the ability to use solar-thermal energy to perform PCR based nucleic acid amplifications. In this work demonstrate how the technique, using similar infrastructure, can also be used to perform solar-thermal based sample processing system for extracting and isolating Vibrio Cholerae nucleic acids from fecal samples. The use of opto-thermal energy enables the use of sunlight to drive thermal lysing reactions in large volumes without the need for external electrical power. Using the system demonstrate the ability to reach a 95°C threshold in less than 5 minutes and maintain a stable sample temperature of +/- 2°C following the ramp up. The system is demonstrated to provide linear results between 10(4) and 10(8) CFU/mL when the released nucleic acids were quantified via traditional means. Additionally, we couple the sample processing unit with our previously demonstrated solar-thermal PCR and tablet based detection system to demonstrate very low power sample-in-answer-out detection.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The use of point-of-care (POC) devices in limited resource settings where access to commonly used infrastructure, such as water and electricity, can be restricted represents simultaneously one of the best application fits for POC systems as well as one of the most challenging places to deploy them. Of the many challenges involved in these systems, the preparation and processing of complex samples like stool, vomit, and biopsies are particularly difficult due to the high number and varied nature of mechanical and chemical interferents present in the sample. Previously we have demonstrated the ability to use solar-thermal energy to perform PCR based nucleic acid amplifications. In this work demonstrate how the technique, using similar infrastructure, can also be used to perform solar-thermal based sample processing system for extracting and isolating Vibrio Cholerae nucleic acids from fecal samples. The use of opto-thermal energy enables the use of sunlight to drive thermal lysing reactions in large volumes without the need for external electrical power. Using the system demonstrate the ability to reach a 95°C threshold in less than 5 minutes and maintain a stable sample temperature of +/- 2°C following the ramp up. The system is demonstrated to provide linear results between 10(4) and 10(8) CFU/mL when the released nucleic acids were quantified via traditional means. Additionally, we couple the sample processing unit with our previously demonstrated solar-thermal PCR and tablet based detection system to demonstrate very low power sample-in-answer-out detection. |
Olcay, Orkan B; Ozgoren, Murat; Karacali, Bilge Imaginary activity recognition using inter-channel time coherence profiles in EEG data Inproceedings 2016. @inproceedings{Olcay2016, title = {Imaginary activity recognition using inter-channel time coherence profiles in EEG data}, author = {Orkan B Olcay and Murat Ozgoren and Bilge Karacali}, doi = {10.1109/siu.2016.7496002}, year = {2016}, date = {2016-01-01}, abstract = {textcopyright 2016 IEEE. In this study, we have carried out a brain-computer interface study that uses time delays between electrodes. As features, we have calculated the time delays that maximizes the absolute value of the cross-covariance between the chosen reference channel and the remaining channels. Performance results of 3 out of 5 participants that were nearly at a %100 accuracy level along with a relatively smaller number of training data, and a lack of similar studies indicate that the proposed approach is open to the further improvements.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. In this study, we have carried out a brain-computer interface study that uses time delays between electrodes. As features, we have calculated the time delays that maximizes the absolute value of the cross-covariance between the chosen reference channel and the remaining channels. Performance results of 3 out of 5 participants that were nearly at a %100 accuracy level along with a relatively smaller number of training data, and a lack of similar studies indicate that the proposed approach is open to the further improvements. |
Hussain, MM; Hussain, AM; Nassar, JM; Kutbee, AT; Gumus, A; Hanna, AN Freeform electronics for advanced healthcare Journal Article 2016 9th International Conference on Electrical and Computer Engineering …, 2016. @article{pop00018c, title = {Freeform electronics for advanced healthcare}, author = {MM Hussain and AM Hussain and JM Nassar and AT Kutbee and A Gumus and AN Hanna}, year = {2016}, date = {2016-01-01}, journal = {2016 9th International Conference on Electrical and Computer Engineering …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ekici, C; Dinleyici, MS Detection of olive oil adulteration using diffraction method Journal Article 2016 National Conference on Electrical, Electronics and Biomedical …, 2016. @article{pop00019h, title = {Detection of olive oil adulteration using diffraction method}, author = {C Ekici and MS Dinleyici}, year = {2016}, date = {2016-01-01}, journal = {2016 National Conference on Electrical, Electronics and Biomedical …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Afana, A; Erdogan, E; Ikki, S Quadrature spatial modulation for cooperative MIMO 5G wireless networks Journal Article 2016 IEEE Globecom Workshops (GC Wkshps), pp. 1–5, 2016. @article{pop00056, title = {Quadrature spatial modulation for cooperative MIMO 5G wireless networks}, author = {A Afana and E Erdogan and S Ikki}, year = {2016}, date = {2016-01-01}, journal = {2016 IEEE Globecom Workshops (GC Wkshps)}, pages = {1--5}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Erdogan, E; Afana, A; Gucluoglu, T; Ikki, S Unified Analysis and Optimization Study of Antenna Selection in Two-Way Relay Networks Journal Article IEEE Wireless Communications Letters, 2016. @article{pop00057, title = {Unified Analysis and Optimization Study of Antenna Selection in Two-Way Relay Networks}, author = {E Erdogan and A Afana and T Gucluoglu and S Ikki}, year = {2016}, date = {2016-01-01}, journal = {IEEE Wireless Communications Letters}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Erdogan, E; Gucluoglu, T Dual-hop amplify-and-forward multi-relay maximum ratio transmission Journal Article Journal of Communications and Networks, 18 (1), pp. 19–26, 2016. @article{pop00058b, title = {Dual-hop amplify-and-forward multi-relay maximum ratio transmission}, author = {E Erdogan and T Gucluoglu}, year = {2016}, date = {2016-01-01}, journal = {Journal of Communications and Networks}, volume = {18}, number = {1}, pages = {19--26}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Karakilinc, Ozgur Onder; Dinleyici, Mehmet Salih Index modulation of transient grating in nonlinear medium Inproceedings Nonlinear Optics and its Applications IV, 2016. @inproceedings{Karakilinc2016, title = {Index modulation of transient grating in nonlinear medium}, author = {Ozgur Onder Karakilinc and Mehmet Salih Dinleyici}, doi = {10.1117/12.2227495}, year = {2016}, date = {2016-01-01}, booktitle = {Nonlinear Optics and its Applications IV}, abstract = {textcopyright 2016 SPIE. A transient chirped grating structure is formed by beam interferences in nonlinear photonic crystal waveguide. Pulse propagation in nonlinear transient grating media is investigated and its impact on the transmission dynamics is explored. The grating may not be stationary propagating but anharmonically oscillating. Thus, effective modification of the refractive index needs to be evaluated in detail.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 SPIE. A transient chirped grating structure is formed by beam interferences in nonlinear photonic crystal waveguide. Pulse propagation in nonlinear transient grating media is investigated and its impact on the transmission dynamics is explored. The grating may not be stationary propagating but anharmonically oscillating. Thus, effective modification of the refractive index needs to be evaluated in detail. |
Bahabry, RR; Gumus, A; Kutbee, AT; Wehbe, N; Ahmed, SM; Ghoneim, MT; ..., Current enhancement in crystalline silicon photovoltaic by low-cost nickel silicide back contact Journal Article 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), pp. 602–605, 2016. @article{pop00022bb, title = {Current enhancement in crystalline silicon photovoltaic by low-cost nickel silicide back contact}, author = {RR Bahabry and A Gumus and AT Kutbee and N Wehbe and SM Ahmed and MT Ghoneim and ...}, year = {2016}, date = {2016-01-01}, journal = {2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)}, pages = {602--605}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Bayrak, Alper; Tatlicioglu, Enver A novel online adaptive time delay identification technique Journal Article International Journal of Systems Science, 2016, ISSN: 14645319. @article{Bayrak2016, title = {A novel online adaptive time delay identification technique}, author = {Alper Bayrak and Enver Tatlicioglu}, doi = {10.1080/00207721.2014.941958}, issn = {14645319}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Systems Science}, abstract = {In this study, an online time delay identification technique is proposed. Different from the relevant literature, the time delay is considered as a nonlinear parameter and nonlinear parameter estimation techniques are adopted. The stability of the adaptive update law can be guaranteed via Lyapunov based arguments and numerical simulations are conducted to demonstrate the proof of concept. textcopyright 2011 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In this study, an online time delay identification technique is proposed. Different from the relevant literature, the time delay is considered as a nonlinear parameter and nonlinear parameter estimation techniques are adopted. The stability of the adaptive update law can be guaranteed via Lyapunov based arguments and numerical simulations are conducted to demonstrate the proof of concept. textcopyright 2011 IEEE. |
Tuncer, Esra; Unlu, Mehmet Zubeyir Accelerometer based handwritten character recognition using Dynamic Time Warping method Inproceedings 2016. @inproceedings{Tuncer2016, title = {Accelerometer based handwritten character recognition using Dynamic Time Warping method}, author = {Esra Tuncer and Mehmet Zubeyir Unlu}, doi = {10.1109/siu.2016.7496112}, year = {2016}, date = {2016-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Bidikli, Baris; Tatlicioglu, Enver; Zergeroglu, Erkan Robust dynamic positioning of surface vessels via multiple unidirectional tugboats Journal Article Ocean Engineering, 2016, ISSN: 00298018. @article{Bidikli2016a, title = {Robust dynamic positioning of surface vessels via multiple unidirectional tugboats}, author = {Baris Bidikli and Enver Tatlicioglu and Erkan Zergeroglu}, doi = {10.1016/j.oceaneng.2015.12.057}, issn = {00298018}, year = {2016}, date = {2016-01-01}, journal = {Ocean Engineering}, abstract = {In this paper, the problem of accurate positioning of an unactuated surface vessel by using multiple uni-directional tugboats is investigated. Specifically a robust controller that ensures asymptotic position tracking is designed. The control design procedure is implemented in two steps: Initially by locating opposing tugboats to specific configurations, the overall problem is transformed into a second order system with an uncertain non-symmetric input gain matrix. Then via a matrix decomposition, a novel robust controller methodology is proposed. The stability of the overall system is ensured via rigorous stability analysis where asymptotic position tracking is ensured. Numerical simulation results are presented to demonstrate the efficiency of the proposed controller.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In this paper, the problem of accurate positioning of an unactuated surface vessel by using multiple uni-directional tugboats is investigated. Specifically a robust controller that ensures asymptotic position tracking is designed. The control design procedure is implemented in two steps: Initially by locating opposing tugboats to specific configurations, the overall problem is transformed into a second order system with an uncertain non-symmetric input gain matrix. Then via a matrix decomposition, a novel robust controller methodology is proposed. The stability of the overall system is ensured via rigorous stability analysis where asymptotic position tracking is ensured. Numerical simulation results are presented to demonstrate the efficiency of the proposed controller. |
Bidikli, Baris; Tatlicioglu, Enver; Zergeroglu, Erkan; Bayrak, Alper An asymptotically stable robust controller formulation for a class of MIMO nonlinear systems with uncertain dynamics Journal Article International Journal of Systems Science, 2016, ISSN: 14645319. @article{Bidikli2016b, title = {An asymptotically stable robust controller formulation for a class of MIMO nonlinear systems with uncertain dynamics}, author = {Baris Bidikli and Enver Tatlicioglu and Erkan Zergeroglu and Alper Bayrak}, doi = {10.1080/00207721.2015.1039627}, issn = {14645319}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Systems Science}, abstract = {textcopyright 2015 Taylor & Francis.In this work, we present a novel continuous robust controller for a class of multi-input/multi-output nonlinear systems that contains unstructured uncertainties in their drift vectors and input matrices. The proposed controller compensates uncertainties in the system dynamics and achieves asymptotic tracking while requiring only the knowledge of the sign of the leading principal minors of the input gain matrix. A Lyapunov-based argument backed up with an integral inequality is applied to prove the asymptotic stability of the closed-loop system. Simulation results are presented to illustrate the viability of the proposed method.}, keywords = {}, pubstate = {published}, tppubtype = {article} } textcopyright 2015 Taylor & Francis.In this work, we present a novel continuous robust controller for a class of multi-input/multi-output nonlinear systems that contains unstructured uncertainties in their drift vectors and input matrices. The proposed controller compensates uncertainties in the system dynamics and achieves asymptotic tracking while requiring only the knowledge of the sign of the leading principal minors of the input gain matrix. A Lyapunov-based argument backed up with an integral inequality is applied to prove the asymptotic stability of the closed-loop system. Simulation results are presented to illustrate the viability of the proposed method. |
Bayrak, Alper; Tatlicioglu, Enver A novel online adaptive time delay identification technique Journal Article International Journal of Systems Science, 2016, ISSN: 14645319. @article{Bayrak2016b, title = {A novel online adaptive time delay identification technique}, author = {Alper Bayrak and Enver Tatlicioglu}, doi = {10.1080/00207721.2014.941958}, issn = {14645319}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Systems Science}, abstract = {In this study, an online time delay identification technique is proposed. Different from the relevant literature, the time delay is considered as a nonlinear parameter and nonlinear parameter estimation techniques are adopted. The stability of the adaptive update law can be guaranteed via Lyapunov based arguments and numerical simulations are conducted to demonstrate the proof of concept. textcopyright 2011 IEEE.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In this study, an online time delay identification technique is proposed. Different from the relevant literature, the time delay is considered as a nonlinear parameter and nonlinear parameter estimation techniques are adopted. The stability of the adaptive update law can be guaranteed via Lyapunov based arguments and numerical simulations are conducted to demonstrate the proof of concept. textcopyright 2011 IEEE. |
Bozdag, Goksenin; Kustepeli, Alp Subsectional Tapered Fed Printed LPDA Antenna with a Feeding Point Patch Journal Article IEEE Antennas and Wireless Propagation Letters, 2016, ISSN: 15361225. @article{Bozdag2016, title = {Subsectional Tapered Fed Printed LPDA Antenna with a Feeding Point Patch}, author = {Goksenin Bozdag and Alp Kustepeli}, doi = {10.1109/LAWP.2015.2451395}, issn = {15361225}, year = {2016}, date = {2016-01-01}, journal = {IEEE Antennas and Wireless Propagation Letters}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Kustepeli, Alp On the helmholtz theorem and its generalization for multi-layers Journal Article Electromagnetics, 2016, ISSN: 1532527X. @article{Kustepeli2016, title = {On the helmholtz theorem and its generalization for multi-layers}, author = {Alp Kustepeli}, doi = {10.1080/02726343.2016.1149755}, issn = {1532527X}, year = {2016}, date = {2016-01-01}, journal = {Electromagnetics}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Bozdag, Goksenin; Kustepeli, Alp Wideband planar monopole antennas for GPS/WLAN/WiMAX/UWB and X-band applications Journal Article Microwave and Optical Technology Letters, 2016, ISSN: 10982760. @article{Bozdag2016a, title = {Wideband planar monopole antennas for GPS/WLAN/WiMAX/UWB and X-band applications}, author = {Goksenin Bozdag and Alp Kustepeli}, doi = {10.1002/mop.29550}, issn = {10982760}, year = {2016}, date = {2016-01-01}, journal = {Microwave and Optical Technology Letters}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Bozdag, Goksenin; Kustepeli, Alp WIDEBAND PRINTED PLANAR MONOPOLE ANTENNA FOR PCS, UWB AND X-BAND APPLICATIONS Journal Article Progress In Electromagnetics Research C, 2016. @article{Bozdag2016b, title = {WIDEBAND PRINTED PLANAR MONOPOLE ANTENNA FOR PCS, UWB AND X-BAND APPLICATIONS}, author = {Goksenin Bozdag and Alp Kustepeli}, doi = {10.2528/pierc15090301}, year = {2016}, date = {2016-01-01}, journal = {Progress In Electromagnetics Research C}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Dede, Mehmet Ismet Can; Maaroof, Omar W; Tatlicioglu, Enver A new objective function for obstacle avoidance by redundant service robot arms Journal Article International Journal of Advanced Robotic Systems, 2016, ISSN: 17298814. @article{Dede2016, title = {A new objective function for obstacle avoidance by redundant service robot arms}, author = {Mehmet Ismet Can Dede and Omar W Maaroof and Enver Tatlicioglu}, doi = {10.5772/62471}, issn = {17298814}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Advanced Robotic Systems}, abstract = {textcopyright 2016 Author(s). Licensee InTech. The performance of task-space tracking control of kinematically redundant robots regulating self-motion to ensure obstacle avoidance is studied and discussed. As the subtask objective, the links of the kinematically redundant assistive robot should avoid any collisions with the patient that is being assisted. The shortcomings of the obstacle avoidance algorithms are discussed and a new obstacle avoidance algorithm is proposed. The performance of the proposed algorithm is validated with tests that were carried out using the virtual model of a seven degrees-offreedom robot arm. The test results indicate that the developed controller for the robot manipulator is successful in both accomplishing the main-task and the sub-task objectives.}, keywords = {}, pubstate = {published}, tppubtype = {article} } textcopyright 2016 Author(s). Licensee InTech. The performance of task-space tracking control of kinematically redundant robots regulating self-motion to ensure obstacle avoidance is studied and discussed. As the subtask objective, the links of the kinematically redundant assistive robot should avoid any collisions with the patient that is being assisted. The shortcomings of the obstacle avoidance algorithms are discussed and a new obstacle avoidance algorithm is proposed. The performance of the proposed algorithm is validated with tests that were carried out using the virtual model of a seven degrees-offreedom robot arm. The test results indicate that the developed controller for the robot manipulator is successful in both accomplishing the main-task and the sub-task objectives. |
Desde, Irem; Bozdag, Goksenin; Kustepeli, Alp Multi-band CPW fed MIMO antenna for bluetooth, WLAN, and WiMAX applications Journal Article Microwave and Optical Technology Letters, 2016, ISSN: 10982760. @article{Desde2016, title = {Multi-band CPW fed MIMO antenna for bluetooth, WLAN, and WiMAX applications}, author = {Irem Desde and Goksenin Bozdag and Alp Kustepeli}, doi = {10.1002/mop.30001}, issn = {10982760}, year = {2016}, date = {2016-01-01}, journal = {Microwave and Optical Technology Letters}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Uzun, B; Ayav, T; Dede, MİC; Berker, M; Işıkay, İ; Hanalioğlu, Ş; Özdemirel, B; ..., Neuroboscope sisteminin model tabanlı sınaması Journal Article Eskişehir Osmangazi Üniversitesi, 2016. @article{pop00067, title = {Neuroboscope sisteminin model tabanlı sınaması}, author = {B Uzun and T Ayav and MİC Dede and M Berker and İ Işıkay and Ş Hanalioğlu and B Özdemirel and ...}, year = {2016}, date = {2016-01-01}, journal = {Eskişehir Osmangazi Üniversitesi}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Bozdag, Goksenin; Kustepeli, Alp 2016, ISSN: 10982760. @misc{Bozdag2016c, title = {Erratum: Wideband planar monopole antennas for GPS/WLAN/WiMAX/UWB and X-band applications (Microwave and Optical Technology Letters 58:2)}, author = {Goksenin Bozdag and Alp Kustepeli}, doi = {10.1002/mop.29783}, issn = {10982760}, year = {2016}, date = {2016-01-01}, booktitle = {Microwave and Optical Technology Letters}, keywords = {}, pubstate = {published}, tppubtype = {misc} } |
Deniz, Meryem; Özdemirel, Barbaros; Bayrak, Alper; Tanyer, İlker; Tatlıcıoğlu, Enver; Zergeroğlu, Erkan Robust output tracking control of an unmanned aerial vehicle subject to additive state dependent disturbance Journal Article IET Control Theory & Applications, 2016, ISSN: 1751-8644. @article{Deniz2016, title = {Robust output tracking control of an unmanned aerial vehicle subject to additive state dependent disturbance}, author = {Meryem Deniz and Barbaros Özdemirel and Alper Bayrak and İlker Tanyer and Enver Tatlıcıoğlu and Erkan Zergeroğlu}, doi = {10.1049/iet-cta.2015.1304}, issn = {1751-8644}, year = {2016}, date = {2016-01-01}, journal = {IET Control Theory & Applications}, abstract = {textcopyright The Institution of Engineering and Technology 2016. In this study, an asymptotic tracking controller is developed for an aircraft model subject to additive, state-dependent, non-linear disturbance-like terms. Dynamic inversion technique in conjunction with robust integral of the sign of the error term is utilised in the controller design. Compared to the previous studies, the need of acceleration measurements of the aircraft have been removed. In addition, the proposed controller design utilises only the output of aircraft dynamics. Lyapunov based analysis is applied to prove global asymptotic convergence of the tracking error signal. Numerical simulation results are presented to illustrate the performance of the proposed robust controller.}, keywords = {}, pubstate = {published}, tppubtype = {article} } textcopyright The Institution of Engineering and Technology 2016. In this study, an asymptotic tracking controller is developed for an aircraft model subject to additive, state-dependent, non-linear disturbance-like terms. Dynamic inversion technique in conjunction with robust integral of the sign of the error term is utilised in the controller design. Compared to the previous studies, the need of acceleration measurements of the aircraft have been removed. In addition, the proposed controller design utilises only the output of aircraft dynamics. Lyapunov based analysis is applied to prove global asymptotic convergence of the tracking error signal. Numerical simulation results are presented to illustrate the performance of the proposed robust controller. |
Bidikli, Baris; Tatlicioglu, Enver; Zergeroglu, Erkan A self-tuning velocity observer formulation for a class of nonlinear systems Inproceedings 2016 IEEE 55th Conference on Decision and Control, CDC 2016, 2016, ISBN: 9781509018376. @inproceedings{Bidikli2016c, title = {A self-tuning velocity observer formulation for a class of nonlinear systems}, author = {Baris Bidikli and Enver Tatlicioglu and Erkan Zergeroglu}, doi = {10.1109/CDC.2016.7798834}, isbn = {9781509018376}, year = {2016}, date = {2016-01-01}, booktitle = {2016 IEEE 55th Conference on Decision and Control, CDC 2016}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Bidikli, Baris; Tatlicioglu, Enver; Zergeroglu, Erkan; Bayrak, Alper An asymptotically stable robust controller formulation for a class of MIMO nonlinear systems with uncertain dynamics Journal Article International Journal of Systems Science, 2016, ISSN: 14645319. @article{Bidikli2016bb, title = {An asymptotically stable robust controller formulation for a class of MIMO nonlinear systems with uncertain dynamics}, author = {Baris Bidikli and Enver Tatlicioglu and Erkan Zergeroglu and Alper Bayrak}, doi = {10.1080/00207721.2015.1039627}, issn = {14645319}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Systems Science}, abstract = {textcopyright 2015 Taylor & Francis.In this work, we present a novel continuous robust controller for a class of multi-input/multi-output nonlinear systems that contains unstructured uncertainties in their drift vectors and input matrices. The proposed controller compensates uncertainties in the system dynamics and achieves asymptotic tracking while requiring only the knowledge of the sign of the leading principal minors of the input gain matrix. A Lyapunov-based argument backed up with an integral inequality is applied to prove the asymptotic stability of the closed-loop system. Simulation results are presented to illustrate the viability of the proposed method.}, keywords = {}, pubstate = {published}, tppubtype = {article} } textcopyright 2015 Taylor & Francis.In this work, we present a novel continuous robust controller for a class of multi-input/multi-output nonlinear systems that contains unstructured uncertainties in their drift vectors and input matrices. The proposed controller compensates uncertainties in the system dynamics and achieves asymptotic tracking while requiring only the knowledge of the sign of the leading principal minors of the input gain matrix. A Lyapunov-based argument backed up with an integral inequality is applied to prove the asymptotic stability of the closed-loop system. Simulation results are presented to illustrate the viability of the proposed method. |
Bidikli, Baris; Tatlicioglu, Enver; Zergeroglu, Erkan A self-tuning velocity observer formulation for a class of nonlinear systems Inproceedings 2016 IEEE 55th Conference on Decision and Control, CDC 2016, 2016, ISBN: 9781509018376. @inproceedings{Bidikli2016e, title = {A self-tuning velocity observer formulation for a class of nonlinear systems}, author = {Baris Bidikli and Enver Tatlicioglu and Erkan Zergeroglu}, doi = {10.1109/CDC.2016.7798834}, isbn = {9781509018376}, year = {2016}, date = {2016-01-01}, booktitle = {2016 IEEE 55th Conference on Decision and Control, CDC 2016}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Galmes, S; Atakan, B Performance analysis of diffusion-based molecular communications with memory Journal Article IEEE Transactions on Communications, 64 (9), pp. 3786–3793, 2016. @article{pop00024b, title = {Performance analysis of diffusion-based molecular communications with memory}, author = {S Galmes and B Atakan}, year = {2016}, date = {2016-01-01}, journal = {IEEE Transactions on Communications}, volume = {64}, number = {9}, pages = {3786--3793}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Atakan, B; Akan, OB Biologically inspired dynamic spectrum access in cognitive radio networks Miscellaneous 2016. @misc{pop00028b, title = {Biologically inspired dynamic spectrum access in cognitive radio networks}, author = {B Atakan and OB Akan}, year = {2016}, date = {2016-01-01}, keywords = {}, pubstate = {published}, tppubtype = {misc} } |
Ahmad, I; Liyanage, M; Namal, S; Ylianttila, M; Gurtov, A; Eckert, M; ..., New concepts for traffic, resource and mobility management in software-defined mobile networks Journal Article Wireless On-demand Network Systems and Services (WONS), 2016 12th Annual …, 2016. @article{pop00006bb, title = {New concepts for traffic, resource and mobility management in software-defined mobile networks}, author = {I Ahmad and M Liyanage and S Namal and M Ylianttila and A Gurtov and M Eckert and ...}, year = {2016}, date = {2016-01-01}, journal = {Wireless On-demand Network Systems and Services (WONS), 2016 12th Annual …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ozbek, Berna; Aydogmus, Yigitcan; Ulas, Aydin; Gorkemli, Burak; Ulusoy, Kazim Energy aware routing and traffic management for software defined networks Inproceedings IEEE NETSOFT 2016 - 2016 IEEE NetSoft Conference and Workshops: Software-Defined Infrastructure for Networks, Clouds, IoT and Services, 2016, ISBN: 9781467394864. @inproceedings{Ozbek2016, title = {Energy aware routing and traffic management for software defined networks}, author = {Berna Ozbek and Yigitcan Aydogmus and Aydin Ulas and Burak Gorkemli and Kazim Ulusoy}, doi = {10.1109/NETSOFT.2016.7502446}, isbn = {9781467394864}, year = {2016}, date = {2016-01-01}, booktitle = {IEEE NETSOFT 2016 - 2016 IEEE NetSoft Conference and Workshops: Software-Defined Infrastructure for Networks, Clouds, IoT and Services}, abstract = {textcopyright 2016 IEEE. Since traffic diversity and volume increase with growing popularity of mobile applications, there is the strong need to manage the traffic carried by networks. Software defined networks can simplify network management while enabling new services by employing traffic management including routing whose goal is to maximize the given utility while satisfying capacity requirements. In this paper, we propose an efficient routing algorithm to minimize the cost based on power consumption determined by the number of active OpenFlow switches in a software defined network while satisfying throughput requirements of all flows according to constraints on link capacities in the network. We evaluate the performance of the proposed algorithm based on the number of active switches for different network topologies with various scenarios.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. Since traffic diversity and volume increase with growing popularity of mobile applications, there is the strong need to manage the traffic carried by networks. Software defined networks can simplify network management while enabling new services by employing traffic management including routing whose goal is to maximize the given utility while satisfying capacity requirements. In this paper, we propose an efficient routing algorithm to minimize the cost based on power consumption determined by the number of active OpenFlow switches in a software defined network while satisfying throughput requirements of all flows according to constraints on link capacities in the network. We evaluate the performance of the proposed algorithm based on the number of active switches for different network topologies with various scenarios. |
Baştürk, Ilhan; Özbek, Berna Radio resource management for user-relay assisted OFDMA-based wireless networks Journal Article AEU - International Journal of Electronics and Communications, 2016, ISSN: 16180399. @article{Basturk2016, title = {Radio resource management for user-relay assisted OFDMA-based wireless networks}, author = {Ilhan Baştürk and Berna Özbek}, doi = {10.1016/j.aeue.2016.01.021}, issn = {16180399}, year = {2016}, date = {2016-01-01}, journal = {AEU - International Journal of Electronics and Communications}, abstract = {Orthogonal frequency division multiple access (OFDMA) based relay assisted networks are important for current and next-generation wireless networks since they have great potential to provide high data rate to users at anywhere, anytime. Towards that end, fixed relay assisted OFDMA networks are commonly utilized by the operators. However, they require supplementary costly infrastructure. User-relay assisted OFDMA-based networks are promising candidates to fulfill the demanding coverage and capacity requirements of future wireless networks in a cost efficient way. Thus, they have become popular as a complementary solution to fixed relay networks. Generic frame structure that divides the resource allocation frame into two subframes is mostly used in the literature for fixed and user-relay assisted networks in which it is assumed that a user can act as a destination and a relay simultaneously. However, it may be difficult to apply this assumption to practical systems because of the limitations of the current transceiver design. Thus, we propose a novel frame structure for user-relay assisted OFDMA-based wireless networks in order to cope with these drawbacks. The efficient radio resource management algorithms including relay selection and resource allocation are developed in order to exploit the opportunities of the proposed frame structure.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Orthogonal frequency division multiple access (OFDMA) based relay assisted networks are important for current and next-generation wireless networks since they have great potential to provide high data rate to users at anywhere, anytime. Towards that end, fixed relay assisted OFDMA networks are commonly utilized by the operators. However, they require supplementary costly infrastructure. User-relay assisted OFDMA-based networks are promising candidates to fulfill the demanding coverage and capacity requirements of future wireless networks in a cost efficient way. Thus, they have become popular as a complementary solution to fixed relay networks. Generic frame structure that divides the resource allocation frame into two subframes is mostly used in the literature for fixed and user-relay assisted networks in which it is assumed that a user can act as a destination and a relay simultaneously. However, it may be difficult to apply this assumption to practical systems because of the limitations of the current transceiver design. Thus, we propose a novel frame structure for user-relay assisted OFDMA-based wireless networks in order to cope with these drawbacks. The efficient radio resource management algorithms including relay selection and resource allocation are developed in order to exploit the opportunities of the proposed frame structure. |
Yüksel, Kivilcim Optical fiber sensor system for remote and multi-point refractive index measurement Journal Article Sensors and Actuators, A: Physical, 2016, ISSN: 09244247. @article{Yuksel2016, title = {Optical fiber sensor system for remote and multi-point refractive index measurement}, author = {Kivilcim Yüksel}, doi = {10.1016/j.sna.2016.09.003}, issn = {09244247}, year = {2016}, date = {2016-01-01}, journal = {Sensors and Actuators, A: Physical}, abstract = {A Fresnel-reflection-based RI sensor using SMF fiber tips as sensing points interrogated by multi-wavelength OTDR from a distant location (up to several tens of kilometers) has been reported. The advantage of the system compared to previous work is that the distance between sensor points is not limited by the spatial resolution of OTDR. Experimental work demonstrated that the proposed sensor is capable of measuring refractive index of liquid chemicals with a precision of 1.7 × 10−4. This sensor prototype have strong conveniences (simple installation requirements, fast response and reliability in harsh environment) compared to previous Fresnel-based RI sensors which makes it a very good option for environmental monitoring systems.}, keywords = {}, pubstate = {published}, tppubtype = {article} } A Fresnel-reflection-based RI sensor using SMF fiber tips as sensing points interrogated by multi-wavelength OTDR from a distant location (up to several tens of kilometers) has been reported. The advantage of the system compared to previous work is that the distance between sensor points is not limited by the spatial resolution of OTDR. Experimental work demonstrated that the proposed sensor is capable of measuring refractive index of liquid chemicals with a precision of 1.7 × 10−4. This sensor prototype have strong conveniences (simple installation requirements, fast response and reliability in harsh environment) compared to previous Fresnel-based RI sensors which makes it a very good option for environmental monitoring systems. |
Beyazıt, Esra Aycan; Özbek, Berna; Ruyet, Didier Le On stream selection for interference alignment in heterogeneous networks Journal Article Eurasip Journal on Wireless Communications and Networking, 2016, ISSN: 16871499. @article{Beyazt2016, title = {On stream selection for interference alignment in heterogeneous networks}, author = {Esra Aycan Beyazıt and Berna Özbek and Didier Le Ruyet}, doi = {10.1186/s13638-016-0575-7}, issn = {16871499}, year = {2016}, date = {2016-01-01}, journal = {Eurasip Journal on Wireless Communications and Networking}, abstract = {After publication of our work [1] we noticed the following modifications. Eq. (3) should be written as follows.}, keywords = {}, pubstate = {published}, tppubtype = {article} } After publication of our work [1] we noticed the following modifications. Eq. (3) should be written as follows. |
Yüksel, Kivilcim; Pala, Deniz Analytical investigation of a novel interrogation approach of fiber Bragg grating sensors using Optical Frequency Domain Reflectometry Journal Article Optics and Lasers in Engineering, 2016, ISSN: 01438166. @article{Yuksel2016a, title = {Analytical investigation of a novel interrogation approach of fiber Bragg grating sensors using Optical Frequency Domain Reflectometry}, author = {Kivilcim Yüksel and Deniz Pala}, doi = {10.1016/j.optlaseng.2016.01.008}, issn = {01438166}, year = {2016}, date = {2016-01-01}, journal = {Optics and Lasers in Engineering}, abstract = {This work presents a novel approach in interrogating Polarization Dependent Loss (PDL) of cascaded identical FBGs using Optical Frequency Domain Reflectometer (OFDR). The fundamentals of both polarisation properties of uniform FBGs and polarisation-sensitive OFDR are explained and the benefits of this novel approach in measuring transversal load are discussed. The numerical programs computing the spectral evolution of PDL of the FBGs in the array as a function of grating parameters (grating length and birefringence) are presented. Our simulation results show an excellent agreement with the previously reported simulation (and experimental) results in the literature obtained on a single FBG by using classical state-of-the-art measurement techniques. As an envisaged application, the proposed system shows the feasibility of measuring the residual stresses during manufacturing process of composite materials which is not straightforward by amplitude spectrum measurements and/or considering only the axial strains.}, keywords = {}, pubstate = {published}, tppubtype = {article} } This work presents a novel approach in interrogating Polarization Dependent Loss (PDL) of cascaded identical FBGs using Optical Frequency Domain Reflectometer (OFDR). The fundamentals of both polarisation properties of uniform FBGs and polarisation-sensitive OFDR are explained and the benefits of this novel approach in measuring transversal load are discussed. The numerical programs computing the spectral evolution of PDL of the FBGs in the array as a function of grating parameters (grating length and birefringence) are presented. Our simulation results show an excellent agreement with the previously reported simulation (and experimental) results in the literature obtained on a single FBG by using classical state-of-the-art measurement techniques. As an envisaged application, the proposed system shows the feasibility of measuring the residual stresses during manufacturing process of composite materials which is not straightforward by amplitude spectrum measurements and/or considering only the axial strains. |
Karatas, Azad; Ozbek, Berna; Bardak, Erinc Deniz; Sonmez, Ilker Cell selection algorithm performance for Tetra trunk Inproceedings 2016. @inproceedings{Karatas2016, title = {Cell selection algorithm performance for Tetra trunk}, author = {Azad Karatas and Berna Ozbek and Erinc Deniz Bardak and Ilker Sonmez}, doi = {10.1109/siu.2016.7495755}, year = {2016}, date = {2016-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
İde, C; Yüksel, K A comparative study of optical fiber sensors for refractive index measurement Journal Article 2016 National Conference on Electrical, Electronics and Biomedical …, 2016. @article{pop00018e, title = {A comparative study of optical fiber sensors for refractive index measurement}, author = {C İde and K Yüksel}, year = {2016}, date = {2016-01-01}, journal = {2016 National Conference on Electrical, Electronics and Biomedical …}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ozdogan, Ozgecan; Ozbek, Berna; Kurt, Gunes Karabulut Performance of secure multiuser MISO systems with threshold based user selection Inproceedings 2016. @inproceedings{Ozdogan2016, title = {Performance of secure multiuser MISO systems with threshold based user selection}, author = {Ozgecan Ozdogan and Berna Ozbek and Gunes Karabulut Kurt}, doi = {10.1109/siu.2016.7495841}, year = {2016}, date = {2016-01-01}, abstract = {textcopyright 2016 IEEE. Physical layer security is a promising approach to enable secure communications by considering the characteristics of wireless channels. In this work, we consider a multiple antenna multiuser system with an eavesdropper which is passive and its channel state information (CSI) is not available at transmitter. We we add artificial noise (AN) in the null space of legitimate user to disturb reception of eavesdropper. For the sake of ensuring secure communication, CSI has great impact on system performance. However, in order to estimate the channel of all users at transmitter, sending pilot signals from all these users increases the system overhead. We perform a threshold based user selection at the receiver side to reduce this overhead. Also, we investigate the effects of the proposed user selection on the secrecy capacity.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. Physical layer security is a promising approach to enable secure communications by considering the characteristics of wireless channels. In this work, we consider a multiple antenna multiuser system with an eavesdropper which is passive and its channel state information (CSI) is not available at transmitter. We we add artificial noise (AN) in the null space of legitimate user to disturb reception of eavesdropper. For the sake of ensuring secure communication, CSI has great impact on system performance. However, in order to estimate the channel of all users at transmitter, sending pilot signals from all these users increases the system overhead. We perform a threshold based user selection at the receiver side to reduce this overhead. Also, we investigate the effects of the proposed user selection on the secrecy capacity. |
Yilmaz, Simay; Ozbek, Berna; Tas, Murat; Bardak, Erinc Deniz Load based cell selection algorithm for Digital Mobile Radio Inproceedings International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, 2016, ISSN: 2157023X. @inproceedings{Yilmaz2016b, title = {Load based cell selection algorithm for Digital Mobile Radio}, author = {Simay Yilmaz and Berna Ozbek and Murat Tas and Erinc Deniz Bardak}, doi = {10.1109/ICUMT.2016.7765350}, issn = {2157023X}, year = {2016}, date = {2016-01-01}, booktitle = {International Congress on Ultra Modern Telecommunications and Control Systems and Workshops}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Beyazıt, Esra Aycan; Özbek, Berna; Le Ruyet, Didier On stream selection for interference alignment with limited feedback in heterogeneous networks Journal Article Transactions on Emerging Telecommunications Technologies, 2016, ISSN: 21613915. @article{Beyazt2016a, title = {On stream selection for interference alignment with limited feedback in heterogeneous networks}, author = {Esra Aycan Beyazıt and Berna Özbek and Didier Le Ruyet}, doi = {10.1002/ett.3074}, issn = {21613915}, year = {2016}, date = {2016-01-01}, journal = {Transactions on Emerging Telecommunications Technologies}, abstract = {CONTEXT Nocturnal enuresis or bedwetting is the most common type of urinary incontinence in children. It has significant psychological effects on both the child and the family. Enuresis nocturna is defined as the inability to hold urine during the night in children who have completed toilet training. It is termed as being "primary" if no continence has ever been achieved or "secondary if it follows at least 6 months of dry nights. The aim of this review was to assemble the pathophysiological background and general information about nocturnal enuresis. EVIDENCE ACQUISITION This review was performed by evaluating the literature on nocturnal enuresis published between 1970 and 2015, available via PubMed and using the keywords "nocturnal enuresis," "incontinence," "pediatric," "review," and "treatment." RESULTS Children with nocturnal enuresis produce urine at higher rates during the night, and may have lower bladder capacities. Some children with nocturnal enuresis may also have daytime urgency, frequency, and urinary incontinence. Treatment includes aggressive treatment of accompanying constipation or urinary tract infections, behavioral changes, and medical therapy. Alarm therapy remains the first-line treatment modality for primary nocturnal enuresis. High rates of patient compliance and relapse mean that alternative treatments remain on the agenda. CONCLUSIONS Nocturnal enuresis is a common problem that has multifaceted effects on both the child and the family. Due to multiple etiologic factors, nocturnal enuresis is still not clearly defined.}, keywords = {}, pubstate = {published}, tppubtype = {article} } CONTEXT Nocturnal enuresis or bedwetting is the most common type of urinary incontinence in children. It has significant psychological effects on both the child and the family. Enuresis nocturna is defined as the inability to hold urine during the night in children who have completed toilet training. It is termed as being "primary" if no continence has ever been achieved or "secondary if it follows at least 6 months of dry nights. The aim of this review was to assemble the pathophysiological background and general information about nocturnal enuresis. EVIDENCE ACQUISITION This review was performed by evaluating the literature on nocturnal enuresis published between 1970 and 2015, available via PubMed and using the keywords "nocturnal enuresis," "incontinence," "pediatric," "review," and "treatment." RESULTS Children with nocturnal enuresis produce urine at higher rates during the night, and may have lower bladder capacities. Some children with nocturnal enuresis may also have daytime urgency, frequency, and urinary incontinence. Treatment includes aggressive treatment of accompanying constipation or urinary tract infections, behavioral changes, and medical therapy. Alarm therapy remains the first-line treatment modality for primary nocturnal enuresis. High rates of patient compliance and relapse mean that alternative treatments remain on the agenda. CONCLUSIONS Nocturnal enuresis is a common problem that has multifaceted effects on both the child and the family. Due to multiple etiologic factors, nocturnal enuresis is still not clearly defined. |
Özbek, Berna; Özdoǧan, Özgecan; Kurt, Güneş Karabulut Secure multiuser MISO communication systems with quantized feedback Inproceedings IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2016, ISBN: 9781509032549. @inproceedings{Ozbek2016a, title = {Secure multiuser MISO communication systems with quantized feedback}, author = {Berna Özbek and Özgecan Özdoǧan and Güneş Karabulut Kurt}, doi = {10.1109/PIMRC.2016.7794561}, isbn = {9781509032549}, year = {2016}, date = {2016-01-01}, booktitle = {IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC}, abstract = {textcopyright 2016 IEEE. Physical layer security is a promising approach to provide secure communications by considering the characteristics of wireless channels. In this work, we propose a secure multiple input single output (MISO) multiuser system with a quantized feedback link. We assume that eavesdropper is passive and its channel state information (CSI) is not available at transmitter. In order to disrupt reception of a passive eavesdropper, we schedule more than one legitimate user. For the sake of ensuring secure communication, the CSI of legitimate users has great impact on overall performance of secrecy sum capacity. The proposed solution applies a semi-orthogonal selection with a specific codebook to reduce the quantization errors for legitimate user side while disrupting the reception of the eavesdropper. The proposed solution improved secrecy sum capacity while reducing the feedback overhead for secure MISO multiser system.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. Physical layer security is a promising approach to provide secure communications by considering the characteristics of wireless channels. In this work, we propose a secure multiple input single output (MISO) multiuser system with a quantized feedback link. We assume that eavesdropper is passive and its channel state information (CSI) is not available at transmitter. In order to disrupt reception of a passive eavesdropper, we schedule more than one legitimate user. For the sake of ensuring secure communication, the CSI of legitimate users has great impact on overall performance of secrecy sum capacity. The proposed solution applies a semi-orthogonal selection with a specific codebook to reduce the quantization errors for legitimate user side while disrupting the reception of the eavesdropper. The proposed solution improved secrecy sum capacity while reducing the feedback overhead for secure MISO multiser system. |
Ekici, Ç Optical characterization of dielectric films on curved surfaces using diffraction method Journal Article İzmir Institute of Technology, 2016. @article{pop00037c, title = {Optical characterization of dielectric films on curved surfaces using diffraction method}, author = {Ç Ekici}, year = {2016}, date = {2016-01-01}, journal = {İzmir Institute of Technology}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Beyazit, Esra Aycan; Ozbek, Berna; Ruyet, Didier Le Adaptive limited feedback scheme for stream selection based interference alignment in heterogeneous networks Inproceedings Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop, 2016, ISSN: 2151870X. @inproceedings{Beyazit2016, title = {Adaptive limited feedback scheme for stream selection based interference alignment in heterogeneous networks}, author = {Esra Aycan Beyazit and Berna Ozbek and Didier Le Ruyet}, doi = {10.1109/SAM.2016.7569700}, issn = {2151870X}, year = {2016}, date = {2016-01-01}, booktitle = {Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Soylu, G Exploiting second harmonic generation for microelectronics interface characterization Journal Article İzmir Institute of Technology, 2016. @article{pop00038b, title = {Exploiting second harmonic generation for microelectronics interface characterization}, author = {G Soylu}, year = {2016}, date = {2016-01-01}, journal = {İzmir Institute of Technology}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Baştürk, İ; Özbek, B Iterative Channel Estimation for Higher Order Modulated STBC-OFDM Systems with Reduced Complexity. Journal Article KSII Transactions on Internet & Information Systems, 10 (6), 2016. @article{pop00059, title = {Iterative Channel Estimation for Higher Order Modulated STBC-OFDM Systems with Reduced Complexity.}, author = {İ Baştürk and B Özbek}, year = {2016}, date = {2016-01-01}, journal = {KSII Transactions on Internet & Information Systems}, volume = {10}, number = {6}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Basturk, Ilhan; Ozbek, Berna Distance based selection for user-relaying in OFDMA-based wireless networks Inproceedings 2016. @inproceedings{Basturk2016a, title = {Distance based selection for user-relaying in OFDMA-based wireless networks}, author = {Ilhan Basturk and Berna Ozbek}, doi = {10.1109/siu.2016.7495908}, year = {2016}, date = {2016-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Uslu, Merve; Tugrel, Halim Bahadir; Kurt, Gunes Karabulut; Ozbek, Berna Verification of channel reciprocity implementation in software defined radios Inproceedings 2016. @inproceedings{Uslu2016, title = {Verification of channel reciprocity implementation in software defined radios}, author = {Merve Uslu and Halim Bahadir Tugrel and Gunes Karabulut Kurt and Berna Ozbek}, doi = {10.1109/siu.2016.7495799}, year = {2016}, date = {2016-01-01}, abstract = {textcopyright 2016 IEEE. Channel estimation is one of the vital processes in wireless communication systems. Assuming that A and B are two communication nodes, coefficients of the channel from A node to B node, must be very similar to the coefficients of the channel from B node to A node, due to channel reciprocity. In this paper, channel reciprocity property is tested by using software defined radio kits in laboratory environment. Average amplitude and phase values of these two channel coefficients are compared. The result of these comparisons is that the average amplitude and phase values are close.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. Channel estimation is one of the vital processes in wireless communication systems. Assuming that A and B are two communication nodes, coefficients of the channel from A node to B node, must be very similar to the coefficients of the channel from B node to A node, due to channel reciprocity. In this paper, channel reciprocity property is tested by using software defined radio kits in laboratory environment. Average amplitude and phase values of these two channel coefficients are compared. The result of these comparisons is that the average amplitude and phase values are close. |
Yilmaz, Saadet Simay; Ozbek, Berna; Tas, Murat; Bengur, Sidika Performance of cell selection algorithms for APCO25 Inproceedings 2016. @inproceedings{Yilmaz2016a, title = {Performance of cell selection algorithms for APCO25}, author = {Saadet Simay Yilmaz and Berna Ozbek and Murat Tas and Sidika Bengur}, doi = {10.1109/siu.2016.7495756}, year = {2016}, date = {2016-01-01}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Gökceli, Selahattin; Uslu, Merve; Kurt, Güneş Karabulut; Özbek, Berna; Alakoca, Hakan; Durmaz, Mehmet Akif Implementation of pre-FFT beamforming in MIMO-OFDM Inproceedings ELECO 2015 - 9th International Conference on Electrical and Electronics Engineering, 2016, ISBN: 9786050107371. @inproceedings{Gokceli2016, title = {Implementation of pre-FFT beamforming in MIMO-OFDM}, author = {Selahattin Gökceli and Merve Uslu and Güneş Karabulut Kurt and Berna Özbek and Hakan Alakoca and Mehmet Akif Durmaz}, doi = {10.1109/ELECO.2015.7394639}, isbn = {9786050107371}, year = {2016}, date = {2016-01-01}, booktitle = {ELECO 2015 - 9th International Conference on Electrical and Electronics Engineering}, abstract = {textcopyright 2015 Chamber of Electrical Engineers of Turkey. In this study, real-time software defined radio implementation of the point to point multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system using pre-fast Fourier transform (pre-FFT) beamforming technique in both the transmitter and the receiver is done for the first time in the literature. By taking benefit of the MIMO system's spatial multiplexing property, the performance of the implemented pre-FFT beamforming approach is demonstrated in terms of bit error rate and error vector magnitude measurements. As a result of the test results, the effect of the beamforming methods on the performance of communication systems are clearly observed.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2015 Chamber of Electrical Engineers of Turkey. In this study, real-time software defined radio implementation of the point to point multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system using pre-fast Fourier transform (pre-FFT) beamforming technique in both the transmitter and the receiver is done for the first time in the literature. By taking benefit of the MIMO system's spatial multiplexing property, the performance of the implemented pre-FFT beamforming approach is demonstrated in terms of bit error rate and error vector magnitude measurements. As a result of the test results, the effect of the beamforming methods on the performance of communication systems are clearly observed. |
Aydogmus, Yigitcan; Ozbek, Berna; Koyuncu, Onur; Ulusoy, Kazim; Karakaya, Ozgur Flow based power efficient routing for software defined networks Inproceedings 2016. @inproceedings{Aydogmus2016, title = {Flow based power efficient routing for software defined networks}, author = {Yigitcan Aydogmus and Berna Ozbek and Onur Koyuncu and Kazim Ulusoy and Ozgur Karakaya}, doi = {10.1109/siu.2016.7495778}, year = {2016}, date = {2016-01-01}, abstract = {Since traffic diversity and volume increase with growing popularity of mobile applications, there is the strong need to manage the traffic carried by networks. Software defined networking can manage network while enabling new services by employing traffic management whose goal is to maximize the utility objective while satisfying given requirements. In this paper, we propose an efficient routing to minimize the cost based on power consumption determined by the number of active switches in a software defined networks. An optimum solution obtained by genetic algorithm and a reduced complexity routing approach are proposed while satisfying throughput requirements of flows for given constraints on link capacities in the network. We provide the performance evaluations of the proposed algorithms with respect to different throughput constraints of flows in a given network topology.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } Since traffic diversity and volume increase with growing popularity of mobile applications, there is the strong need to manage the traffic carried by networks. Software defined networking can manage network while enabling new services by employing traffic management whose goal is to maximize the utility objective while satisfying given requirements. In this paper, we propose an efficient routing to minimize the cost based on power consumption determined by the number of active switches in a software defined networks. An optimum solution obtained by genetic algorithm and a reduced complexity routing approach are proposed while satisfying throughput requirements of flows for given constraints on link capacities in the network. We provide the performance evaluations of the proposed algorithms with respect to different throughput constraints of flows in a given network topology. |
Ozbek, B Reduced feedback link design for device-relaying enhanced multiple-input single-output orthogonal frequency-division multiple access wireless systems Journal Article Electronics Letters, 52 (5), pp. 403–404, 2016. @article{pop00081, title = {Reduced feedback link design for device-relaying enhanced multiple-input single-output orthogonal frequency-division multiple access wireless systems}, author = {B Ozbek}, year = {2016}, date = {2016-01-01}, journal = {Electronics Letters}, volume = {52}, number = {5}, pages = {403--404}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Beyazıt, Aycan E; Özbek, B; Ruyet, Le D Heterojen ağlarda veri katarı seçimi tabanlı girişim hizalama için uyarlamalı sınırlı geri besleme yöntemi Journal Article IEEE, 2016. @article{pop00082bb, title = {Heterojen ağlarda veri katarı seçimi tabanlı girişim hizalama için uyarlamalı sınırlı geri besleme yöntemi}, author = {Aycan E Beyazıt and B Özbek and Le D Ruyet}, year = {2016}, date = {2016-01-01}, journal = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Yılmaz, SS; Özbek, B; Taş, M; Bengür, S APCO25 için hücre seçim algoritmaları performansı Journal Article IEEE, 2016. @article{pop00083bb, title = {APCO25 için hücre seçim algoritmaları performansı}, author = {SS Yılmaz and B Özbek and M Taş and S Bengür}, year = {2016}, date = {2016-01-01}, journal = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Karakuş, Oktay; Kuruoǧlu, Ercan E; Altinkaya, Mustafa A Bayesian estimation of polynomial moving average models with unknown degree of nonlinearity Inproceedings European Signal Processing Conference, 2016, ISSN: 22195491. @inproceedings{Karakus2016, title = {Bayesian estimation of polynomial moving average models with unknown degree of nonlinearity}, author = {Oktay Karakuş and Ercan E Kuruoǧlu and Mustafa A Altinkaya}, doi = {10.1109/EUSIPCO.2016.7760507}, issn = {22195491}, year = {2016}, date = {2016-01-01}, booktitle = {European Signal Processing Conference}, abstract = {textcopyright 2016 IEEE. Various real world phenomena such as optical communication channels, power amplifiers and movement of sea vessels exhibit nonlinear characteristics. The nonlinearity degree of such systems is assumed to be known as a general intention. In this paper, we contribute to the literature with a Bayesian estimation method based on reversible jump Markov chain Monte Carlo (RJMCMC) for polynomial moving average (PMA) models. Our use of RJMCMC is novel and unique in the way of estimating both model memory and the nonlinearity degree. This offers greater flexibility to characterize the models which reflect different nonlinear characters of the measured data. In this study, we aim to demonstrate the potentials of RJMCMC in the identification for PMA models due to its potential of exploring nonlinear spaces of different degrees by sampling.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } textcopyright 2016 IEEE. Various real world phenomena such as optical communication channels, power amplifiers and movement of sea vessels exhibit nonlinear characteristics. The nonlinearity degree of such systems is assumed to be known as a general intention. In this paper, we contribute to the literature with a Bayesian estimation method based on reversible jump Markov chain Monte Carlo (RJMCMC) for polynomial moving average (PMA) models. Our use of RJMCMC is novel and unique in the way of estimating both model memory and the nonlinearity degree. This offers greater flexibility to characterize the models which reflect different nonlinear characters of the measured data. In this study, we aim to demonstrate the potentials of RJMCMC in the identification for PMA models due to its potential of exploring nonlinear spaces of different degrees by sampling. |
Köktürk, Başak Esin; Karacalı, Bilge Annealing-based model-free expectation maximisation for multi-colour flow cytometry data clustering Journal Article International Journal of Data Mining and Bioinformatics, 2016, ISSN: 1748-5673. @article{Kokturk2016, title = {Annealing-based model-free expectation maximisation for multi-colour flow cytometry data clustering}, author = {Başak Esin Köktürk and Bilge Karacalı}, doi = {10.1504/ijdmb.2016.073365}, issn = {1748-5673}, year = {2016}, date = {2016-01-01}, journal = {International Journal of Data Mining and Bioinformatics}, abstract = {Copyright textcopyright 2016 Inderscience Enterprises Ltd.This paper proposes an optimised model-free expectation maximisation method for automated clustering of high-dimensional datasets. The method is based on a recursive binary division strategy that successively divides an original dataset into distinct clusters. Each binary division is carriedout using a model-free expectation maximisation scheme that exploits the posterior probability computation capability of the quasi-supervised learningalgorithm subjected to a line-search optimisation over the reference set size parameter analogous to a simulated annealing approach. The divisions arecontinued until a division cost exceeds an adaptively determined limit. Experiment results on synthetic as well as real multi-colour flow cytometrydatasets showed that the proposed method can accurately capture the prominent clusters without requiring any prior knowledge on the number of clusters ortheir distribution models.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Copyright textcopyright 2016 Inderscience Enterprises Ltd.This paper proposes an optimised model-free expectation maximisation method for automated clustering of high-dimensional datasets. The method is based on a recursive binary division strategy that successively divides an original dataset into distinct clusters. Each binary division is carriedout using a model-free expectation maximisation scheme that exploits the posterior probability computation capability of the quasi-supervised learningalgorithm subjected to a line-search optimisation over the reference set size parameter analogous to a simulated annealing approach. The divisions arecontinued until a division cost exceeds an adaptively determined limit. Experiment results on synthetic as well as real multi-colour flow cytometrydatasets showed that the proposed method can accurately capture the prominent clusters without requiring any prior knowledge on the number of clusters ortheir distribution models. |
Doty, Richard L; Tourbier, Isabelle A; Pham, Dzung L; Cuzzocreo, Jennifer L; Udupa, Jayaram K; Karacali, Bilge; Beals, Evan; Fabius, Laura; Leon-Sarmiento, Fidias E; Moonis, Gul; Kim, Taehoon; Mihama, Toru; Geckle, Rena J; Yousem, David M Taste dysfunction in multiple sclerosis Journal Article Journal of Neurology, 2016, ISSN: 14321459. @article{Doty2016, title = {Taste dysfunction in multiple sclerosis}, author = {Richard L Doty and Isabelle A Tourbier and Dzung L Pham and Jennifer L Cuzzocreo and Jayaram K Udupa and Bilge Karacali and Evan Beals and Laura Fabius and Fidias E Leon-Sarmiento and Gul Moonis and Taehoon Kim and Toru Mihama and Rena J Geckle and David M Yousem}, doi = {10.1007/s00415-016-8030-6}, issn = {14321459}, year = {2016}, date = {2016-01-01}, journal = {Journal of Neurology}, abstract = {textcopyright 2016, Springer-Verlag Berlin Heidelberg. Empirical studies of taste function in multiple sclerosis (MS) are rare. Moreover, a detailed assessment of whether quantitative measures of taste function correlate with the punctate and patchy myelin-related lesions found throughout the CNS of MS patients has not been made. We administered a 96-trial test of sweet (sucrose), sour (citric acid), bitter (caffeine) and salty (NaCl) taste perception to the left and right anterior (CN VII) and posterior (CN IX) tongue regions of 73 MS patients and 73 matched controls. The number and volume of lesions were assessed using quantitative MRI in 52 brain regions of 63 of the MS patients. Taste identification scores were significantly lower in the MS patients for sucrose (p = 0.0002), citric acid (p = 0.0001), caffeine (p = 0.0372) and NaCl (p = 0.0004) and were present in both anterior and posterior tongue regions. The percent of MS patients with identification scores falling below the 5th percentile of controls was 15.07 % for caffeine, 21.9 % for citric acid, 24.66 % for sucrose, and 31.50 % for NaCl. Such scores were inversely correlated with lesion volumes in the temporal, medial frontal, and superior frontal lobes, and with the number of lesions in the left and right superior frontal lobes, right anterior cingulate gyrus, and left parietal operculum. Regardless of the subject group, women outperformed men on the taste measures. These findings indicate that a sizable number of MS patients exhibit taste deficits that are associated with MS-related lesions throughout the brain.}, keywords = {}, pubstate = {published}, tppubtype = {article} } textcopyright 2016, Springer-Verlag Berlin Heidelberg. Empirical studies of taste function in multiple sclerosis (MS) are rare. Moreover, a detailed assessment of whether quantitative measures of taste function correlate with the punctate and patchy myelin-related lesions found throughout the CNS of MS patients has not been made. We administered a 96-trial test of sweet (sucrose), sour (citric acid), bitter (caffeine) and salty (NaCl) taste perception to the left and right anterior (CN VII) and posterior (CN IX) tongue regions of 73 MS patients and 73 matched controls. The number and volume of lesions were assessed using quantitative MRI in 52 brain regions of 63 of the MS patients. Taste identification scores were significantly lower in the MS patients for sucrose (p = 0.0002), citric acid (p = 0.0001), caffeine (p = 0.0372) and NaCl (p = 0.0004) and were present in both anterior and posterior tongue regions. The percent of MS patients with identification scores falling below the 5th percentile of controls was 15.07 % for caffeine, 21.9 % for citric acid, 24.66 % for sucrose, and 31.50 % for NaCl. Such scores were inversely correlated with lesion volumes in the temporal, medial frontal, and superior frontal lobes, and with the number of lesions in the left and right superior frontal lobes, right anterior cingulate gyrus, and left parietal operculum. Regardless of the subject group, women outperformed men on the taste measures. These findings indicate that a sizable number of MS patients exhibit taste deficits that are associated with MS-related lesions throughout the brain. |
Karacalı, Bilge An efficient algorithm for large-scale quasi-supervised learning Journal Article Pattern Analysis and Applications, 2016, ISSN: 14337541. @article{Karacal2016, title = {An efficient algorithm for large-scale quasi-supervised learning}, author = {Bilge Karacalı}, doi = {10.1007/s10044-014-0401-y}, issn = {14337541}, year = {2016}, date = {2016-01-01}, journal = {Pattern Analysis and Applications}, keywords = {}, pubstate = {published}, tppubtype = {article} } |