[{"title":"Does attention speed up processing? Decreases and increases of processing rates in visual prior entry.","publication_status":"published","publication_identifier":{"issn":["1534-7362"]},"department":[{"_id":"424"}],"doi":"10.1167/15.3.1","oa":"1","date_updated":"2022-06-06T16:31:07Z","language":[{"iso":"eng"}],"user_id":"42165","abstract":[{"text":"Selective visual attention improves performance in many tasks. Among others, it leads to 'prior entry'—earlier perception of an attended compared to an unattended stimulus. Whether this phenomenon is purely based on an increase of the processing rate of the attended stimulus or if a decrease in the processing rate of the unattended stimulus also contributes to the effect is, up to now, unanswered. Here we describe a novel approach to this question based on Bundesen’s Theory of Visual Attention, which we use to overcome the limitations of earlier prior-entry assessment with temporal order judgments (TOJs) that only allow relative statements regarding the processing speed of attended and unattended stimuli. Prevalent models of prior entry in TOJs either indirectly predict a pure acceleration or cannot model the difference between acceleration and deceleration. In a paradigm that combines a letter-identification task with TOJs, we show that indeed acceleration of the attended and deceler","lang":"eng"}],"volume":15,"status":"public","date_created":"2018-12-10T07:01:56Z","author":[{"full_name":"Tünnermann, Jan","first_name":"Jan","last_name":"Tünnermann"},{"last_name":"Petersen","first_name":"Anders","full_name":"Petersen, Anders"},{"full_name":"Scharlau, Ingrid","orcid":"0000-0003-2364-9489","first_name":"Ingrid","id":"451","last_name":"Scharlau"}],"publication":"Journal of Vision","keyword":["unattended stimuli","attention speed","cognitive processing","Attention","Humans","Judgment","Mental Recall","Visual Perception","Stimulus Parameters","Visual Perception","Visual Attention","Cognitive Processes","Velocity"],"issue":"3","_id":"6066","intvolume":" 15","year":"2015","citation":{"mla":"Tünnermann, Jan, et al. “Does Attention Speed up Processing? Decreases and Increases of Processing Rates in Visual Prior Entry.” Journal of Vision, vol. 15, no. 3, 2015, doi:10.1167/15.3.1.","bibtex":"@article{Tünnermann_Petersen_Scharlau_2015, title={Does attention speed up processing? Decreases and increases of processing rates in visual prior entry.}, volume={15}, DOI={10.1167/15.3.1}, number={3}, journal={Journal of Vision}, author={Tünnermann, Jan and Petersen, Anders and Scharlau, Ingrid}, year={2015} }","ieee":"J. Tünnermann, A. Petersen, and I. Scharlau, “Does attention speed up processing? Decreases and increases of processing rates in visual prior entry.,” Journal of Vision, vol. 15, no. 3, 2015, doi: 10.1167/15.3.1.","chicago":"Tünnermann, Jan, Anders Petersen, and Ingrid Scharlau. “Does Attention Speed up Processing? Decreases and Increases of Processing Rates in Visual Prior Entry.” Journal of Vision 15, no. 3 (2015). https://doi.org/10.1167/15.3.1.","apa":"Tünnermann, J., Petersen, A., & Scharlau, I. (2015). Does attention speed up processing? Decreases and increases of processing rates in visual prior entry. Journal of Vision, 15(3). https://doi.org/10.1167/15.3.1","short":"J. Tünnermann, A. Petersen, I. Scharlau, Journal of Vision 15 (2015).","ama":"Tünnermann J, Petersen A, Scharlau I. Does attention speed up processing? Decreases and increases of processing rates in visual prior entry. Journal of Vision. 2015;15(3). doi:10.1167/15.3.1"},"type":"journal_article","main_file_link":[{"url":"https://jov.arvojournals.org/article.aspx?articleid=2213282","open_access":"1"}]},{"date_created":"2019-05-20T13:08:08Z","status":"public","publication_identifier":{"issn":["0939-1533"]},"department":[{"_id":"151"}],"keyword":["Inertia motor","High velocity","Stick-slip motor","Slip-slip operation","Friction parameter identification"],"publication":"Archive of Applied Mechanics","author":[{"last_name":"Hunstig","first_name":"Matthias","full_name":"Hunstig, Matthias"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","last_name":"Hemsel","id":"210"},{"last_name":"Sextro","id":"21220","first_name":"Walter","full_name":"Sextro, Walter"}],"publisher":"Springer Berlin Heidelberg","user_id":"55222","title":"High-velocity operation of piezoelectric inertia motors: experimental validation","abstract":[{"text":"Piezoelectric inertia motors use the inertia of a body to drive it by means of a friction contact in a series of small steps. It has been shown previously in theoretical investigations that higher velocities and smoother movements can be obtained if these steps do not contain phases of stiction (''stick-slip`` operation), but use sliding friction only (''slip-slip`` operation). One very promising driving option for such motors is the superposition of multiple sinusoidal signals or harmonics. In this contribution, the theoretical results are validated experimentally. In this context, a quick and reliable identification process for parameters describing the friction contact is proposed. Additionally, the force generation potential of inertia motors is investigated theoretically and experimentally. The experimental results confirm the theoretical result that for a given maximum frequency, a signal with a high fundamental frequency and consisting of two superposed sine waves leads to the highest velocity and the smoothest motion, while the maximum motor force is obtained with signals containing more harmonics. These results are of fundamental importance for the further development of high-velocity piezoelectric inertia motors.","lang":"eng"}],"language":[{"iso":"eng"}],"page":"1-9","type":"journal_article","citation":{"mla":"Hunstig, Matthias, et al. “High-Velocity Operation of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied Mechanics, Springer Berlin Heidelberg, 2014, pp. 1–9, doi:10.1007/s00419-014-0940-0.","bibtex":"@article{Hunstig_Hemsel_Sextro_2014, title={High-velocity operation of piezoelectric inertia motors: experimental validation}, DOI={10.1007/s00419-014-0940-0}, journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2014}, pages={1–9} }","apa":"Hunstig, M., Hemsel, T., & Sextro, W. (2014). High-velocity operation of piezoelectric inertia motors: experimental validation. Archive of Applied Mechanics, 1–9. https://doi.org/10.1007/s00419-014-0940-0","ama":"Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia motors: experimental validation. Archive of Applied Mechanics. 2014:1-9. doi:10.1007/s00419-014-0940-0","chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Operation of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied Mechanics, 2014, 1–9. https://doi.org/10.1007/s00419-014-0940-0.","ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric inertia motors: experimental validation,” Archive of Applied Mechanics, pp. 1–9, 2014.","short":"M. Hunstig, T. Hemsel, W. Sextro, Archive of Applied Mechanics (2014) 1–9."},"year":"2014","doi":"10.1007/s00419-014-0940-0","_id":"9876","date_updated":"2019-05-20T13:08:43Z"},{"title":"High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation","user_id":"55222","abstract":[{"text":"It has been shown previously that ``slip-slip'' operation of piezoelectric inertia motors allows higher velocities and smoother movements than classic ``stick-slip'' operation. One very promising driving option is to use a superposition of multiple sinusoidal signals. In this contribution, previous theoretical results are validated experimentally. The results confirm the theoretical result that for a given maximum frequency, usually defined by the actuator characteristics, a signal with high fundamental frequency and consisting of two superposed sine waves leads to the highest velocity and the smoothest motion. This result is of fundamental importance for the further development of high-velocity piezoelectric inertia motors.","lang":"eng"}],"place":"Hannover, Germany","date_created":"2019-05-13T14:06:14Z","status":"public","publication":"Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop","department":[{"_id":"151"}],"keyword":["Piezoelectric inertia motor","stick-slip motor","driving signal","velocity","smoothness"],"author":[{"last_name":"Hunstig","first_name":"Matthias","full_name":"Hunstig, Matthias"},{"id":"210","last_name":"Hemsel","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"first_name":"Walter","full_name":"Sextro, Walter","last_name":"Sextro","id":"21220"}],"date_updated":"2022-01-06T07:04:21Z","_id":"9802","page":"16-18","citation":{"ama":"Hunstig M, Hemsel T, Sextro W. High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation. In: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop. Hannover, Germany; 2013:16-18.","apa":"Hunstig, M., Hemsel, T., & Sextro, W. (2013). High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation. In Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop (pp. 16–18). Hannover, Germany.","chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation.” In Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, 16–18. Hannover, Germany, 2013.","mla":"Hunstig, Matthias, et al. “High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation.” Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, 2013, pp. 16–18.","bibtex":"@inproceedings{Hunstig_Hemsel_Sextro_2013, place={Hannover, Germany}, title={High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation}, booktitle={Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={16–18} }","short":"M. Hunstig, T. Hemsel, W. Sextro, in: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, Hannover, Germany, 2013, pp. 16–18.","ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation,” in Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, 2013, pp. 16–18."},"type":"conference","year":"2013","language":[{"iso":"eng"}]},{"page":"90 - 100","year":"2013","citation":{"bibtex":"@article{Hunstig_Hemsel_Sextro_2013, title={Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation.}, volume={200}, DOI={10.1016/j.sna.2012.11.012}, journal={Sensors and Actuators A: Physical}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={90–100} }","mla":"Hunstig, Matthias, et al. “Stick-Slip and Slip-Slip Operation of Piezoelectric Inertia Drives - Part I: Ideal Excitation.” Sensors and Actuators A: Physical, vol. 200, 2013, pp. 90–100, doi:10.1016/j.sna.2012.11.012.","chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Stick-Slip and Slip-Slip Operation of Piezoelectric Inertia Drives - Part I: Ideal Excitation.” Sensors and Actuators A: Physical 200 (2013): 90–100. https://doi.org/10.1016/j.sna.2012.11.012.","ama":"Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation. Sensors and Actuators A: Physical. 2013;200:90-100. doi:10.1016/j.sna.2012.11.012","apa":"Hunstig, M., Hemsel, T., & Sextro, W. (2013). Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation. Sensors and Actuators A: Physical, 200, 90–100. https://doi.org/10.1016/j.sna.2012.11.012","ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation.,” Sensors and Actuators A: Physical, vol. 200, pp. 90–100, 2013.","short":"M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A: Physical 200 (2013) 90–100."},"type":"journal_article","intvolume":" 200","_id":"9805","date_created":"2019-05-13T14:10:34Z","status":"public","volume":200,"publication":"Sensors and Actuators A: Physical","keyword":["Inertia motor","Stick--slip drive","Mode of operation","Performance indicator","Velocity maximization","Actuator stroke"],"author":[{"first_name":"Matthias","full_name":"Hunstig, Matthias","last_name":"Hunstig"},{"id":"210","last_name":"Hemsel","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"first_name":"Walter","full_name":"Sextro, Walter","last_name":"Sextro","id":"21220"}],"quality_controlled":"1","user_id":"55222","abstract":[{"text":"Piezoelectric inertia motors, also known as ``stick--slip drives'', use the inertia of a body to drive it in small steps by means of a friction contact. While these steps are classically assumed to involve stiction and sliding, the motors can also operate in ``slip--slip'' mode without any phase of static friction. This contribution provides a systematic investigation and performance comparison of different stick--slip and slip--slip modes of operation. Different criteria for comparing the motional performance of inertia motors are defined: Steady state velocity, smoothness of motion, and start-up time. Using the example of a translational inertia motor excited by an ideal displacement signal, it is found that the maximum velocity reachable in stick--slip operation is limited principally, while continuous slip--slip operation allows very high velocities. For the investigated driving signals, the motor velocity is proportional to the square root of the actuator stroke. The motor performance with these ideal signals defines an upper boundary for the performance of real motors.","lang":"eng"}],"language":[{"iso":"eng"}],"doi":"10.1016/j.sna.2012.11.012","date_updated":"2022-01-06T07:04:21Z","department":[{"_id":"151"}],"title":"Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation."},{"abstract":[{"text":"A combination of GPS (global positioning system) and INS (inertial navigation system) is known to provide high precision and highly robust vehicle localization. Notably during times when the GPS signal has a poor quality, e.g. due to the lack of a sufficiently large number of visible satellites, the INS, which may consist of a gyroscope and an odometer, will lead to improved positioning accuracy. In this paper we show how velocity information obtained from GSM (global system for mobile communications) signalling, rather than from a tachometer, can be used together with a gyroscope sensor to support localization in the presence of temporarily unavailable GPS data. We propose a sensor fusion system architecture and present simulation results that show the effectiveness of this approach.","lang":"eng"}],"title":"A GPS positioning approach exploiting GSM velocity estimates","user_id":"44006","department":[{"_id":"54"}],"publication":"6th Workshop on Positioning Navigation and Communication (WPNC 2009)","keyword":["cellular radio","distance measurement","global positioning system","Global Positioning System","global system for mobile communications","GPS positioning approach","GSM velocity","gyroscopes","gyroscope sensor","inertial navigation","inertial navigation system","odometer","sensor fusion system architecture","sensors"],"author":[{"full_name":"Peschke, Sven","first_name":"Sven","last_name":"Peschke"},{"last_name":"Bevermeier","full_name":"Bevermeier, Maik","first_name":"Maik"},{"last_name":"Haeb-Umbach","id":"242","first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold"}],"date_created":"2019-07-12T05:30:04Z","status":"public","date_updated":"2022-01-06T06:51:11Z","_id":"11881","doi":"10.1109/WPNC.2009.4907827","oa":"1","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2009/PeBeHa09-1.pdf","open_access":"1"}],"page":"195-202","citation":{"chicago":"Peschke, Sven, Maik Bevermeier, and Reinhold Haeb-Umbach. “A GPS Positioning Approach Exploiting GSM Velocity Estimates.” In 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 195–202, 2009. https://doi.org/10.1109/WPNC.2009.4907827.","apa":"Peschke, S., Bevermeier, M., & Haeb-Umbach, R. (2009). A GPS positioning approach exploiting GSM velocity estimates. In 6th Workshop on Positioning Navigation and Communication (WPNC 2009) (pp. 195–202). https://doi.org/10.1109/WPNC.2009.4907827","ama":"Peschke S, Bevermeier M, Haeb-Umbach R. A GPS positioning approach exploiting GSM velocity estimates. In: 6th Workshop on Positioning Navigation and Communication (WPNC 2009). ; 2009:195-202. doi:10.1109/WPNC.2009.4907827","bibtex":"@inproceedings{Peschke_Bevermeier_Haeb-Umbach_2009, title={A GPS positioning approach exploiting GSM velocity estimates}, DOI={10.1109/WPNC.2009.4907827}, booktitle={6th Workshop on Positioning Navigation and Communication (WPNC 2009)}, author={Peschke, Sven and Bevermeier, Maik and Haeb-Umbach, Reinhold}, year={2009}, pages={195–202} }","mla":"Peschke, Sven, et al. “A GPS Positioning Approach Exploiting GSM Velocity Estimates.” 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202, doi:10.1109/WPNC.2009.4907827.","short":"S. Peschke, M. Bevermeier, R. Haeb-Umbach, in: 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202.","ieee":"S. Peschke, M. Bevermeier, and R. Haeb-Umbach, “A GPS positioning approach exploiting GSM velocity estimates,” in 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202."},"type":"conference","year":"2009","language":[{"iso":"eng"}]},{"_id":"17272","date_updated":"2023-02-01T13:06:43Z","doi":"10.1109/DEVLRN.2009.5175516","language":[{"iso":"eng"}],"type":"conference","citation":{"ama":"Vollmer A-L, Lohan KS, Fischer K, et al. People modify their tutoring behavior in robot-directed interaction for action learning. In: Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning. IEEE; 2009:1-6. doi:10.1109/DEVLRN.2009.5175516","short":"A.-L. Vollmer, K.S. Lohan, K. Fischer, Y. Nagai, K. Pitsch, J. Fritsch, K. Rohlfing, B. Wrede, in: Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, IEEE, 2009, pp. 1–6.","apa":"Vollmer, A.-L., Lohan, K. S., Fischer, K., Nagai, Y., Pitsch, K., Fritsch, J., Rohlfing, K., & Wrede, B. (2009). People modify their tutoring behavior in robot-directed interaction for action learning. Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, 1–6. https://doi.org/10.1109/DEVLRN.2009.5175516","chicago":"Vollmer, Anna-Lisa, Katrin Solveig Lohan, Kerstin Fischer, Yukie Nagai, Karola Pitsch, Jannik Fritsch, Katharina Rohlfing, and Britta Wrede. “People Modify Their Tutoring Behavior in Robot-Directed Interaction for Action Learning.” In Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, 1–6. IEEE, 2009. https://doi.org/10.1109/DEVLRN.2009.5175516.","ieee":"A.-L. Vollmer et al., “People modify their tutoring behavior in robot-directed interaction for action learning,” in Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, 2009, pp. 1–6, doi: 10.1109/DEVLRN.2009.5175516.","bibtex":"@inproceedings{Vollmer_Lohan_Fischer_Nagai_Pitsch_Fritsch_Rohlfing_Wrede_2009, title={People modify their tutoring behavior in robot-directed interaction for action learning}, DOI={10.1109/DEVLRN.2009.5175516}, booktitle={Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning}, publisher={IEEE}, author={Vollmer, Anna-Lisa and Lohan, Katrin Solveig and Fischer, Kerstin and Nagai, Yukie and Pitsch, Karola and Fritsch, Jannik and Rohlfing, Katharina and Wrede, Britta}, year={2009}, pages={1–6} }","mla":"Vollmer, Anna-Lisa, et al. “People Modify Their Tutoring Behavior in Robot-Directed Interaction for Action Learning.” Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, IEEE, 2009, pp. 1–6, doi:10.1109/DEVLRN.2009.5175516."},"year":"2009","page":"1-6","abstract":[{"lang":"eng","text":"In developmental research, tutoring behavior has been identified as scaffolding infants' learning processes. It has been defined in terms of child-directed speech (Motherese), child-directed motion (Motionese), and contingency. In the field of developmental robotics, research often assumes that in human-robot interaction (HRI), robots are treated similar to infants, because their immature cognitive capabilities benefit from this behavior. However, according to our knowledge, it has barely been studied whether this is true and how exactly humans alter their behavior towards a robotic interaction partner. In this paper, we present results concerning the acceptance of a robotic agent in a social learning scenario obtained via comparison to adults and 8-11 months old infants in equal conditions. These results constitute an important empirical basis for making use of tutoring behavior in social robotics. In our study, we performed a detailed multimodal analysis of HRI in a tutoring situation using the example of a robot simulation equipped with a bottom-up saliency-based attention model. Our results reveal significant differences in hand movement velocity, motion pauses, range of motion, and eye gaze suggesting that for example adults decrease their hand movement velocity in an Adult-Child Interaction (ACI), opposed to an Adult-Adult Interaction (AAI) and this decrease is even higher in the Adult-Robot Interaction (ARI). We also found important differences between ACI and ARI in how the behavior is modified over time as the interaction unfolds. These findings indicate the necessity of integrating top-down feedback structures into a bottom-up system for robots to be fully accepted as interaction partners."}],"user_id":"14931","title":"People modify their tutoring behavior in robot-directed interaction for action learning","author":[{"full_name":"Vollmer, Anna-Lisa","first_name":"Anna-Lisa","last_name":"Vollmer"},{"first_name":"Katrin Solveig","full_name":"Lohan, Katrin Solveig","last_name":"Lohan"},{"first_name":"Kerstin","full_name":"Fischer, Kerstin","last_name":"Fischer"},{"full_name":"Nagai, Yukie","first_name":"Yukie","last_name":"Nagai"},{"full_name":"Pitsch, Karola","first_name":"Karola","last_name":"Pitsch"},{"last_name":"Fritsch","first_name":"Jannik","full_name":"Fritsch, Jannik"},{"id":"50352","last_name":"Rohlfing","full_name":"Rohlfing, Katharina","first_name":"Katharina"},{"full_name":"Wrede, Britta","first_name":"Britta","last_name":"Wrede"}],"publisher":"IEEE","department":[{"_id":"749"}],"keyword":["robot simulation","hand movement velocity","robotic interaction partner","robotic agent","robot-directed interaction","multimodal analysis","Motionese","Motherese","intelligent tutoring systems","immature cognitive capability","human computer interaction","eye gaze","child-directed speech","child-directed motion","bottom-up system","bottom-up saliency-based attention model","adult-robot interaction","adult-child interaction","adult-adult interaction","human-robot interaction","action learning","social learning scenario","social robotics","software agents","top-down feedback structures","tutoring behavior"],"publication":"Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning","status":"public","date_created":"2020-06-24T13:02:43Z"},{"doi":"10.1109/WPNC.2007.353637","oa":"1","_id":"11883","date_updated":"2022-01-06T06:51:11Z","year":"2007","citation":{"ama":"Peschke S, Haeb-Umbach R. Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling. In: 4th Workshop on Positioning Navigation and Communication (WPNC 2007). ; 2007:217-222. doi:10.1109/WPNC.2007.353637","apa":"Peschke, S., & Haeb-Umbach, R. (2007). Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling. In 4th Workshop on Positioning Navigation and Communication (WPNC 2007) (pp. 217–222). https://doi.org/10.1109/WPNC.2007.353637","chicago":"Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling.” In 4th Workshop on Positioning Navigation and Communication (WPNC 2007), 217–22, 2007. https://doi.org/10.1109/WPNC.2007.353637.","mla":"Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling.” 4th Workshop on Positioning Navigation and Communication (WPNC 2007), 2007, pp. 217–22, doi:10.1109/WPNC.2007.353637.","bibtex":"@inproceedings{Peschke_Haeb-Umbach_2007, title={Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling}, DOI={10.1109/WPNC.2007.353637}, booktitle={4th Workshop on Positioning Navigation and Communication (WPNC 2007)}, author={Peschke, Sven and Haeb-Umbach, Reinhold}, year={2007}, pages={217–222} }","short":"S. Peschke, R. Haeb-Umbach, in: 4th Workshop on Positioning Navigation and Communication (WPNC 2007), 2007, pp. 217–222.","ieee":"S. Peschke and R. Haeb-Umbach, “Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling,” in 4th Workshop on Positioning Navigation and Communication (WPNC 2007), 2007, pp. 217–222."},"type":"conference","page":"217-222","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2007/PeHa07.pdf","open_access":"1"}],"title":"Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling","user_id":"44006","abstract":[{"lang":"eng","text":"In this paper, we experimentally evaluate algorithms for velocity estimation of a GSM 900 mobile terminal which are based on the analysis of the statistical properties of the fast fading process. It is shown how theses statistics can be obtained from the training sequences present in downlink transmission bursts without establishing an active connection. Realistic simulations of a GSM channel according to the COST 207 channel models have been conducted. These models incorporate effects like multipath propagation, fading, cochannel interference and additive noise. It is shown that velocity estimation by searching for the maximum slope of the power density spectrum of the fast fading performs best."}],"status":"public","date_created":"2019-07-12T05:30:06Z","author":[{"full_name":"Peschke, Sven","first_name":"Sven","last_name":"Peschke"},{"id":"242","last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"}],"keyword":["additive noise","cellular radio","channel estimation","cochannel interference","COST 207 channel models","downlink transmission bursts","fading channels","fading process","GSM downlink signalling","mobile terminals","multipath channels","multipath propagation","power density spectrum","statistical analysis","statistical properties","telecommunication links","telecommunication terminals","velocity estimation"],"department":[{"_id":"54"}],"publication":"4th Workshop on Positioning Navigation and Communication (WPNC 2007)"},{"_id":"8915","intvolume":" 1","page":"663-666 vol.1","year":"2000","type":"conference","citation":{"ieee":"T. Hemsel and J. Wallaschek, “State of the art and development trends of ultrasonic linear motors,” in Ultrasonics Symposium, 2000 IEEE, 2000, vol. 1, pp. 663–666 vol.1.","short":"T. Hemsel, J. Wallaschek, in: Ultrasonics Symposium, 2000 IEEE, 2000, pp. 663–666 vol.1.","bibtex":"@inproceedings{Hemsel_Wallaschek_2000, title={State of the art and development trends of ultrasonic linear motors}, volume={1}, DOI={10.1109/ULTSYM.2000.922635}, booktitle={Ultrasonics Symposium, 2000 IEEE}, author={Hemsel, Tobias and Wallaschek, Jörg}, year={2000}, pages={663–666 vol.1} }","mla":"Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development Trends of Ultrasonic Linear Motors.” Ultrasonics Symposium, 2000 IEEE, vol. 1, 2000, pp. 663–66 vol.1, doi:10.1109/ULTSYM.2000.922635.","ama":"Hemsel T, Wallaschek J. State of the art and development trends of ultrasonic linear motors. In: Ultrasonics Symposium, 2000 IEEE. Vol 1. ; 2000:663-666 vol.1. doi:10.1109/ULTSYM.2000.922635","apa":"Hemsel, T., & Wallaschek, J. (2000). State of the art and development trends of ultrasonic linear motors. In Ultrasonics Symposium, 2000 IEEE (Vol. 1, pp. 663–666 vol.1). https://doi.org/10.1109/ULTSYM.2000.922635","chicago":"Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development Trends of Ultrasonic Linear Motors.” In Ultrasonics Symposium, 2000 IEEE, 1:663–66 vol.1, 2000. https://doi.org/10.1109/ULTSYM.2000.922635."},"user_id":"55222","abstract":[{"text":"Ultrasonic linear motors have now been investigated for several years. Their key features are high thrust forces related to their volume and good position-accuracy. This contribution consists of two main parts. In the first part we describe the state-of-the-art of linear piezoelectric motors. Characteristics like no-load velocity, maximum thrust force and other technical properties of commercially available devices will be reported as well as those of prototypes. In the second part we report an ongoing research and development project aiming at a linear piezoelectric motor, which is capable of surpassing some of the shortcomings of other piezoelectric motors","lang":"eng"}],"volume":1,"date_created":"2019-04-15T09:52:09Z","status":"public","publication":"Ultrasonics Symposium, 2000 IEEE","keyword":["linear motors","ultrasonic motors","linear piezoelectric motor","maximum thrust force","no-load velocity","ultrasonic linear motor","Electromagnetic devices","Electromagnetic fields","Frequency","Friction","Gears","Materials science and technology","Piezoelectric materials","Research and development","Vibrations","Wheels"],"author":[{"first_name":"Tobias","full_name":"Hemsel, Tobias","last_name":"Hemsel","id":"210"},{"first_name":"Jörg","full_name":"Wallaschek, Jörg","last_name":"Wallaschek"}],"quality_controlled":"1","doi":"10.1109/ULTSYM.2000.922635","date_updated":"2022-01-06T07:04:05Z","language":[{"iso":"eng"}],"title":"State of the art and development trends of ultrasonic linear motors","publication_identifier":{"issn":["1051-0117"]},"department":[{"_id":"151"}]}]