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Viser treff 1-27 av 27

2024
1 Wikan, Arild; Kristensen, Ørjan Fosdahl.
On bifurcations, resonances and dynamical behaviour in nonlinear iteroparous Leslie matrix models. Nonlinear dynamics 2024 ;Volum 112. s. 2265-2288
UiT Untitled
 
2023
2 Wikan, Arild; Kristensen, Ørjan Fosdahl.
Stage-Dependent Predation on Prey Species Who Possess Different Life Histories. Discrete Dynamics in Nature and Society 2023 ;Volum 2023. s. -
UiT Untitled
 
2021
3 Wikan, Arild; Kristensen, Ørjan.
Compensatory and overcompensatory dynamics in prey–predator systems exposed to harvest. Journal of Applied Mathematics and Computing 2021 s. -
UiT Untitled
 
2019
4 Kristensen, Ørjan; Wikan, Arild.
Sannsynlighetsregning og statistikk - For høyere utdanning - 2. utgave. Fagbokforlaget 2019 (ISBN 9788245026542) 451 s.
UiT Untitled
 
5 Wikan, Arild; Kristensen, Ørjan.
Prey-Predator Interactions in Two and Three Species Population Models. Discrete Dynamics in Nature and Society 2019 ;Volum 2019. s. -
UiT Untitled
 
2017
6 Wikan, Arild.
An analysis of a semelparous population model with density-Ddependent fecundity and density - dependent survival probabilities. Journal of Applied Mathematics 2017 ;Volum 2017. s. 1-14
UiT Untitled
 
7 Wikan, Arild.
An Analysis of Discrete Stage-Structured Prey and Prey-Predator Population Models. Discrete Dynamics in Nature and Society 2017 ;Volum 2017. s. -
UiT Untitled
 
8 Wikan, Arild; Kristensen, Ørjan.
Nonstationary and Chaotic Dynamics in Age-Structured Population Models. Discrete Dynamics in Nature and Society 2017 ;Volum 2017. s. -
UiT Untitled
 
2016
9 Kristensen, Ørjan; Wikan, Arild.
Bedriftsøkonomi og metodefag – bruk av matematikk i bedriftsøkonomiske problemstillinger. I: Å studere økonomi og administrasjon - et kunnskapspuslespill. Cappelen Damm Akademisk 2016 ISBN 978-82-02-48812-3. s. 107-118
UiT Untitled
 
10 Kristensen, Ørjan; Wikan, Arild.
Sannsynlighetsregning og statistikk - For høyere utdanning. Fagbokforlaget 2016 (ISBN 978-82-450-1938-4) 477 s.
UiT Untitled
 
2015
11 Wikan, Arild.
On the Interplay between Cannibalism and Harvest in Stage-Structured Population Models. Journal of Marine Biology 2015 ;Volum 2015. s. -
UiT Untitled
 
2013
12 Wikan, Arild.
Discrete dynamical systems : with an introduction to discrete optimization problems. London: bookboon.com 2013 (ISBN 9788740303278) 254 s.
HIH Untitled
 
13 Wikan, Arild.
On reserves, stability and the maximum sustainable yield problem. Journal of Mathematics and Statistics 2013 ;Volum 9.(4) s. 344-352
UiT Untitled
 
2012
14 Wikan, Arild.
Age or Stage Structure? A Comparison of Dynamic Outcomes from Discrete Age- and Stage-Structured Population Models. Bulletin of Mathematical Biology 2012 ;Volum 74.(6) s. 1354-1378
UiT Untitled
 
15 Wikan, Arild.
On Nonlinear age and stage structured population models. Journal of Mathematics and Statistics 2012 ;Volum 8.(2) s. 311-322
UiT Untitled
 
16 Wikan, Arild.
Towards some general ecological principles. Journal of Mathematics and Statistics 2012 ;Volum 8.(4) s. 446-460
UiT Untitled
 
2010
17 Eide, Arne; Wikan, Arild.
Optimal selection and effort in a fishery on a stock with cannibalistic behaviour the case of the Northeast Arctic cod fisheries. Journal of Fisheries and Aquatic Sciences 2010 ;Volum 5.(6) s. 454-468
UiT Untitled
 
2005
18 Mjølhus, Einar; Wikan, Arild; Solberg, Tale.
On synchronization in semelparous populations. Journal of Mathematical Biology 2005 ;Volum 50.(1) s. 1-21
FFI UiT Untitled
 
2004
19 Wikan, Arild.
Dynamical consequences of harvest in discrete age-structured population models. Journal of Mathematical Biology 2004 ;Volum 49.(1) s. 35-55
UiT Untitled
 
20 Wikan, Arild.
Stabilizing and destabilizing effects in some age-structured population models. WSEAS Transactions on Biology and Biomedicine 2004 ;Volum 1. s. 181-185
UiT Untitled
 
21 Wikan, Arild; Eide, Arne.
An analysis of a nonlinear stage-structured cannibalism model with Application to the Northeast Arctic cod stock. Bulletin of Mathematical Biology 2004 ;Volum 66. s. 1685-1704
UiT Untitled
 
2001
22 Wikan, Arild.
From chaos to chaos. An analysis of a Discrete age structured prey-predator model. Journal of Mathematical Biology 2001 ;Volum 43. s. 471-500
UiT Untitled
 
1998
23 Wikan, Arild.
Four periodicity in Leslie Matrix models with nonlinear survival probabilities. Theoretical Population Biology 1998 ;Volum 53. s. 85-97
UiT Untitled
 
1997
24 Wikan, Arild.
Dynamic consequences of reproductive delay in Leslie Matrix models with nonlinear survival probabilities. Mathematical Biosciences 1997 ;Volum 146. s. 37-62
UiT Untitled
 
1996
25 Wikan, Arild; Mjølhus, Einar.
Overcompensatory recruitment and generation delay in Discrete age structured population models. Journal of Mathematical Biology 1996 ;Volum 35. s. 195-239
UiT Untitled
 
1995
26 Wikan, Arild; Mjølhus, Einar.
Periodicity of 4 in age-structured population models with density dependence. Journal of Theoretical Biology 1995 (173) s. 109-119
UiT Untitled
 
1980
27 Trulsen, Jan Karsten; Wikan, Arild.
Numerical simulation of Poynting Robertson and collisional effects in the interplanetary dust cloud. Astronomy and Astrophysics (A & A) 1980 ;Volum 91. s. 155-160
UiT UiO Untitled