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Knorn, Steffi
Publications (10 of 26) Show all publications
Knorn, S. & Quevedo, D. E. (2019). Optimal energy allocation in energy harvesting and sharing wireless sensor networks. In: Kanoun, Olfa (Ed.), Energy Harvesting for Wireless Sensor Networks: Technologies, Components and System Design. De Gruyter Oldenbourg
Open this publication in new window or tab >>Optimal energy allocation in energy harvesting and sharing wireless sensor networks
2019 (English)In: Energy Harvesting for Wireless Sensor Networks: Technologies, Components and System Design / [ed] Kanoun, Olfa, De Gruyter Oldenbourg , 2019Chapter in book (Refereed)
Place, publisher, year, edition, pages
De Gruyter Oldenbourg, 2019
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-363298 (URN)
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2018-10-16
Knorn, S., Varagnolo, D., Oliver-Chiva, E., Melles, R. & Dewitte, M. (2018). Data-driven modelling of pelvic floor muscles dynamics. In: : . Paper presented at IFAC Symposium on Biological and Medical Systems (BMS).
Open this publication in new window or tab >>Data-driven modelling of pelvic floor muscles dynamics
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2018 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-363301 (URN)
Conference
IFAC Symposium on Biological and Medical Systems (BMS)
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2018-10-16
Varagnolo, D., Knorn, S., Oliver-Chiva, E., Melles, R. & Dewitte, M. (2018). Data-driven modelling of subjective pain/pleasure assessments as responses to vaginal dilation stimuli. IEEE Control Systems Letters, 2(3), 423-428
Open this publication in new window or tab >>Data-driven modelling of subjective pain/pleasure assessments as responses to vaginal dilation stimuli
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2018 (English)In: IEEE Control Systems Letters, Vol. 2, no 3, p. 423-428Article in journal (Refereed) Published
Abstract [en]

Women affected by pain during penetrative sexual intercourse are often treated using fixed-size vaginal dilators that are regularly perceived as uncomfortable and leading to premature treatment drop-outs. These dilators could be improved by making them adaptive, i.e., able to exert dynamically different pressures on the vaginal duct to simultaneously guarantee comfort levels and achieve the medical dilation objectives. Implementing feedback control would then benefit from models that connect the patients' comfort levels with their experienced physiological stimuli. Here we address the problem of data-driven quantitative modeling of pain/pleasure self-assessments obtained through medical trials. More precisely, we consider time-series records of pelvic floor muscles pressure, vaginal dilation, and pain/pleasure evaluations, and model the relations among these quantities using statistical analysis tools. Besides this, we also address the important issue of the individualization of these models: different persons may respond differently, but these variations may sometimes be so small that it may be beneficial to learn from several individuals simultaneously. We here numerically validate the previous claim by verifying that clustering patients in groups may lead, from a data-driven point of view, to models with a significantly improved statistical performance.

National Category
Signal Processing
Identifiers
urn:nbn:se:uu:diva-363232 (URN)
Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2018-11-14Bibliographically approved
Fjällström, E., Knorn, S., Staffas, K. & Varagnolo, D. (2018). Developing concept inventory tests for electrical engineering (CITE): extractable information, early results and learned lessons. In: : . Paper presented at 12th UKACC International Conference on Control.
Open this publication in new window or tab >>Developing concept inventory tests for electrical engineering (CITE): extractable information, early results and learned lessons
2018 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-363300 (URN)
Conference
12th UKACC International Conference on Control
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2018-10-16
Knorn, S. & Quevedo, D. E. (2018). Optimal energy allocation in energy harvesting and sharing wireless sensor networks. In: Energy Harvesting for Wireless Sensor Networks: Technologies, Components and System Design. De Gruyter Open
Open this publication in new window or tab >>Optimal energy allocation in energy harvesting and sharing wireless sensor networks
2018 (English)In: Energy Harvesting for Wireless Sensor Networks: Technologies, Components and System Design, De Gruyter Open, 2018Chapter in book (Refereed)
Place, publisher, year, edition, pages
De Gruyter Open, 2018
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-371940 (URN)
Available from: 2019-01-03 Created: 2019-01-03 Last updated: 2019-01-03
Biswas, S., Knorn, S., Dey, S. & Ahlén, A. (2018). Quantized non-Bayesian quickest change detection with energy harvesting. In: : . Paper presented at IEEE Globecom2018 SPC.
Open this publication in new window or tab >>Quantized non-Bayesian quickest change detection with energy harvesting
2018 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-363299 (URN)
Conference
IEEE Globecom2018 SPC
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2018-10-16
Besselink, B. & Knorn, S. (2018). Scalable input-to-state stability for performance analysis of large-scale networks. IEEE Control Systems Letters, 2(3), 507-512
Open this publication in new window or tab >>Scalable input-to-state stability for performance analysis of large-scale networks
2018 (English)In: IEEE Control Systems Letters, Vol. 2, no 3, p. 507-512Article in journal (Refereed) Published
Abstract [en]

This letter investigates networks of interconnected systems and introduces the notion of “scalable input-to-state stability” (sISS). This concept is based on input-to-state stability (ISS) and can be interpreted as an extension of the well-known concept of string stability from simple line graphs to general graphs. It guarantees that the trajectories of all states are bounded at all times independently of the network's size and structure and can hence be regarded as an important performance notion. Further, sufficient conditions are derived to guarantee sISS of homogeneous networks with well-defined interconnection structures. In fact, the conditions depend on local ISS Lyapunov functions but guarantee the global condition of sISS. Hence, a first step is made towards developing suitable extensions of string stability to general networks. Two examples are discussed to illustrate the theoretical result.

National Category
Signal Processing
Identifiers
urn:nbn:se:uu:diva-363230 (URN)10.1109/LCSYS.2018.2843174 (DOI)
Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2018-12-05Bibliographically approved
Varagnolo, D., Knorn, S., Oliver-Chiva, E., Melles, R. & Dewitte, M. (2018). Towards the individualization of vaginal dilatation exercises: A quantitative analysis of the variability of vaginal pressure responses. Paper presented at Proceedings of the 21st World Meeting on Sexual Medicine, Lisbon, Portugal, 28 February 2018 - 03 March, 2018. Journal of Sexual Medicine, 15(7), S303-S303
Open this publication in new window or tab >>Towards the individualization of vaginal dilatation exercises: A quantitative analysis of the variability of vaginal pressure responses
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2018 (English)In: Journal of Sexual Medicine, ISSN 1743-6095, E-ISSN 1743-6109, Vol. 15, no 7, p. S303-S303Article in journal, Meeting abstract (Refereed) Published
Place, publisher, year, edition, pages
Elsevier, 2018
National Category
Obstetrics, Gynecology and Reproductive Medicine Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-363302 (URN)10.1016/j.jsxm.2018.04.398 (DOI)000438729400391 ()
Conference
Proceedings of the 21st World Meeting on Sexual Medicine, Lisbon, Portugal, 28 February 2018 - 03 March, 2018
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2018-11-30Bibliographically approved
Chen, Z., Zhang, H., Zhu, L., Knorn, S. & Cheng, Z. (2017). Advanced Techniques for Networked Systems with Applications. Mathematical problems in engineering (Print), Article ID 3849019.
Open this publication in new window or tab >>Advanced Techniques for Networked Systems with Applications
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2017 (English)In: Mathematical problems in engineering (Print), ISSN 1024-123X, E-ISSN 1563-5147, article id 3849019Article in journal, Editorial material (Refereed) Published
Place, publisher, year, edition, pages
HINDAWI LTD, 2017
National Category
Computer and Information Sciences Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-322036 (URN)10.1155/2017/3849019 (DOI)000399055700001 ()
Available from: 2017-05-16 Created: 2017-05-16 Last updated: 2018-01-13Bibliographically approved
Ferguson, J., Donaire, A., Knorn, S. & Middleton, R. H. (2017). Decentralized control for l(2) weak string stability of vehicle platoon. In: 20th IFAC World Congress: . Paper presented at 20th World Congress of the International-Federation-of-Automatic-Control (IFAC), JUL 09-14, 2017, Toulouse, FRANCE (pp. 15012-15017). Elsevier, 50(1)
Open this publication in new window or tab >>Decentralized control for l(2) weak string stability of vehicle platoon
2017 (English)In: 20th IFAC World Congress, Elsevier, 2017, Vol. 50, no 1, p. 15012-15017Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a method of bidirectional control of a vehicle string that achieves l(2) weak string stability. Previous work required short-range communications between vehicles within the string. Here, we utilise some recent results on integral action to remove the requirement of communications altogether. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2017
Series
IFAC-PapersOnLine, E-ISSN 2405-8963 ; 50:1
Keywords
Multi-vehicle systems, Lagrangian and Hamiltonian systems, Disturbance rejection
National Category
Computer Sciences Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-350697 (URN)10.1016/j.ifacol.2017.08.2572 (DOI)000423965400023 ()
Conference
20th World Congress of the International-Federation-of-Automatic-Control (IFAC), JUL 09-14, 2017, Toulouse, FRANCE
Available from: 2018-05-18 Created: 2018-05-18 Last updated: 2018-07-06Bibliographically approved
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