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Söderbacka, Gunnar
Publications (10 of 12) Show all publications
Söderbacka, G., Leonov, G. & Smirnova, V. (1998). New types of Lyapunov functions for investigation of asymptotics of pendulum-like systems (ed.). In: (Ed.), (Ed.), Differential Equations and Their Application: International Conference. Paper presented at International Conference Differential Equations and Their Application : 01/06/1998 - 02/06/1998.
Open this publication in new window or tab >>New types of Lyapunov functions for investigation of asymptotics of pendulum-like systems
1998 (Russian)In: Differential Equations and Their Application: International Conference, 1998Conference paper, Published paper (Refereed)
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-39904 (URN)ed25fbc0-bec0-11dc-b185-000ea68e967b (Local ID)ed25fbc0-bec0-11dc-b185-000ea68e967b (Archive number)ed25fbc0-bec0-11dc-b185-000ea68e967b (OAI)
Conference
International Conference Differential Equations and Their Application : 01/06/1998 - 02/06/1998
Note
Godkänd; 1998; 20080109 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved
Söderbacka, G. & Rodjukov, F. (1998). On the behaviour of some models of electric machines (ed.). Paper presented at . II Царскосельские Чтения, Вишняковские чтения, 4, 113-114
Open this publication in new window or tab >>On the behaviour of some models of electric machines
1998 (Russian)In: II Царскосельские Чтения, Вишняковские чтения, Vol. 4, p. 113-114Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-15281 (URN)ec7ad680-018e-11dd-9241-000ea68e967b (Local ID)ec7ad680-018e-11dd-9241-000ea68e967b (Archive number)ec7ad680-018e-11dd-9241-000ea68e967b (OAI)
Note
Godkänd; 1998; Bibliografisk uppgift: Originally published in: II Царскосельские Чтения, Вишняковские чтения, Том IV; 20080403 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Söderbacka, G., Leonov, G. & Rodjukov, F. (1997). Joint work of two identical synchronous generators with common RL-load (ed.). Paper presented at . Technische Mechanik, 17(1), 73-76
Open this publication in new window or tab >>Joint work of two identical synchronous generators with common RL-load
1997 (English)In: Technische Mechanik, ISSN 0232-3869, Vol. 17, no 1, p. 73-76Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-14370 (URN)db8d7730-0191-11dd-9241-000ea68e967b (Local ID)db8d7730-0191-11dd-9241-000ea68e967b (Archive number)db8d7730-0191-11dd-9241-000ea68e967b (OAI)
Note
Godkänd; 1997; 20080403 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Söderbacka, G. & Rodjukov, F. (1997). The effect of resistance of lines of electric transmissions on the work of the system "synchronous generator" (ed.). Paper presented at . St Petersburg University Mechanics Bulletin (3), 5-7
Open this publication in new window or tab >>The effect of resistance of lines of electric transmissions on the work of the system "synchronous generator"
1997 (English)In: St Petersburg University Mechanics Bulletin, ISSN 0883-623X, no 3, p. 5-7Article in journal (Refereed) Published
Abstract [en]

It is shown that the resistance of supply line essentially affects the work of an asynchronous motor by abruptly decreasing its maximally possible moment on the rotor's axis. It does not practically affect the generator. Since the found critical resistance is comparatively small, it is necessary to take into account only if the supply line is sufficiently long.

National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-14671 (URN)e16452a0-056f-11dd-b034-000ea68e967b (Local ID)e16452a0-056f-11dd-b034-000ea68e967b (Archive number)e16452a0-056f-11dd-b034-000ea68e967b (OAI)
Note
Godkänd; 1997; Bibliografisk uppgift: Originally published in Russian in: Vestnik - Leningradskogo universiteta. Ser. 1. Matematika, mechanika, astronomija. 1997. No. 3, 75-77; 20080408 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Söderbacka, G. & Rodjukov, F. (1997). The effect of the resistance of lines of electric transmission on the stability of the synchronous motor (ed.). Paper presented at . St Petersburg University Mechanics Bulletin (2), 31-33
Open this publication in new window or tab >>The effect of the resistance of lines of electric transmission on the stability of the synchronous motor
1997 (English)In: St Petersburg University Mechanics Bulletin, ISSN 0883-623X, no 2, p. 31-33Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-14300 (URN)da71adf0-0626-11dd-97e0-000ea68e967b (Local ID)da71adf0-0626-11dd-97e0-000ea68e967b (Archive number)da71adf0-0626-11dd-97e0-000ea68e967b (OAI)
Note
Godkänd; 1997; Bibliografisk uppgift: Originally published in Russian in: Vestnik - Sankt Peterburgskogo Universita. Ser. 1. Matematika, mechanika astronomija. 1997. No. 2, 118-120.; 20080409 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Söderbacka, G. & Rodjukov, F. (1997). The effect of the resistance of lines of electric transmission on the stability of the system "synchronous generator - synchronous motor" (ed.). Paper presented at . Technische Mechanik, 17(3), 77-82
Open this publication in new window or tab >>The effect of the resistance of lines of electric transmission on the stability of the system "synchronous generator - synchronous motor"
1997 (English)In: Technische Mechanik, ISSN 0232-3869, Vol. 17, no 3, p. 77-82Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-8180 (URN)6a61f300-0192-11dd-9241-000ea68e967b (Local ID)6a61f300-0192-11dd-9241-000ea68e967b (Archive number)6a61f300-0192-11dd-9241-000ea68e967b (OAI)
Note
Godkänd; 1997; 20080403 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Söderbacka, G., Gyllenberg, M. & Osipov, A. (1997). Эффект сохранения аттрактора при двумерном возмущении (ed.). Paper presented at . Дифференциальные уравнения, 33(6), 859-850
Open this publication in new window or tab >>Эффект сохранения аттрактора при двумерном возмущении
1997 (Russian)In: Дифференциальные уравнения, Vol. 33, no 6, p. 859-850Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-10056 (URN)8cfc36a0-0b88-11dd-9b51-000ea68e967b (Local ID)8cfc36a0-0b88-11dd-9b51-000ea68e967b (Archive number)8cfc36a0-0b88-11dd-9b51-000ea68e967b (OAI)
Note
Godkänd; 1997; 20080416 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Gyllenberg, M., Osipov, A. & Söderbacka, G. (1996). Bifurcation analysis of a metapopulation model with sources and sinks (ed.). Paper presented at . Journal of nonlinear science, 6(4), 329-366
Open this publication in new window or tab >>Bifurcation analysis of a metapopulation model with sources and sinks
1996 (English)In: Journal of nonlinear science, ISSN 0938-8974, E-ISSN 1432-1467, Vol. 6, no 4, p. 329-366Article in journal (Refereed) Published
Abstract [en]

A class of functions describing the Allee effect and local catastrophes in population dynamics is introduced and the behaviour of the resulting one-dimensional discrete dynamical system is investigated in detail. The main topic of the paper is a treatment of the two-dimensional system arising when an Allee function is coupled with a function describing the population decay in a so-called sink. New types of bifurcation phenomena are discovered and explained. The relevance of the results for metapopulation dynamics is discussed.

National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-15760 (URN)10.1007/BF02433474 (DOI)A1996VC04800003 ()f4e13b80-b5f8-11db-bf94-000ea68e967b (Local ID)f4e13b80-b5f8-11db-bf94-000ea68e967b (Archive number)f4e13b80-b5f8-11db-bf94-000ea68e967b (OAI)
Note
Godkänd; 1996; 20070206 (kani)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Eirola, T., Osipov, A. V. & Söderbacka, G. (1996). Chaotic regimes in a dynamical system of the type many predators - one prey (ed.). Paper presented at . Helsingfors: Helsinki University of Technology, Institute of Mathematics
Open this publication in new window or tab >>Chaotic regimes in a dynamical system of the type many predators - one prey
1996 (English)Report (Other academic)
Place, publisher, year, edition, pages
Helsingfors: Helsinki University of Technology, Institute of Mathematics, 1996. p. 33
Series
Research Reports, ISSN 1403-5111 ; A 386
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-25570 (URN)fba27c00-5c6e-11dc-a955-000ea68e967b (Local ID)fba27c00-5c6e-11dc-a955-000ea68e967b (Archive number)fba27c00-5c6e-11dc-a955-000ea68e967b (OAI)
Note
Godkänd; 1996; 20070906 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Eirola, T., Leonov, G., Söderbacka, G. & Rodjukov, F. (1996). Stability of mathematical models for systems of synchronous and asynchronous machines (ed.). Paper presented at . Technische Mechanik, 16(3), 237-244
Open this publication in new window or tab >>Stability of mathematical models for systems of synchronous and asynchronous machines
1996 (English)In: Technische Mechanik, ISSN 0232-3869, Vol. 16, no 3, p. 237-244Article in journal (Refereed) Published
National Category
Mathematical Analysis
Research subject
Mathematics
Identifiers
urn:nbn:se:ltu:diva-15511 (URN)f0aa9a70-5c6f-11dc-a955-000ea68e967b (Local ID)f0aa9a70-5c6f-11dc-a955-000ea68e967b (Archive number)f0aa9a70-5c6f-11dc-a955-000ea68e967b (OAI)
Note
Godkänd; 1996; 20070906 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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