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Träfflista för sökning "WFRF:(Wiktorsson S) "

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Numrering	Referens	Omslagsbild	Hitta
1.	Sacuiu, S, et al. (författare) Accuracy of 12 short versions of the Geriatric Depression Scale to detect depression in a prospective study of a high-risk population with different levels of cognition 2022 Ingår i: International psychogeriatrics. - 1741-203X. ; 34:5, s. 479-488 Tidskriftsartikel (refereegranskat)
2.	Wiktorsson, Magnus, et al. (författare) An optimal production flow control problem with impulsive demand 1997 Ingår i: Mathematical and computer modelling. - 0895-7177 .- 1872-9479. ; 26:2, s. 53-67 Tidskriftsartikel (refereegranskat)abstract We consider a system consisting of a single machine cell and producing one part type. The machine cell has a finite capacity and is reliable. We consider a finite planning horizon containing N impulsive demands. The demand occurs instantaneously. Each such demand is known by its size and when it occurs in the planning horizon. In order to keep the production as close to the demand as possible there is a trade off between building up inventory and letting customers wait. An optimal control problem is formulated to determine the optimal production strategy. Solution technique is developed via Pontryagin's Minimum Principle.
3.	Wiktorsson, S, et al. (författare) Attempted suicide in the elderly: characteristics of suicide attempters 70 years and older and a general population comparison group 2010 Ingår i: The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry. - 1545-7214. ; 18:1, s. 57-67 Tidskriftsartikel (refereegranskat)
4.	Bark, Glenn, et al. (författare) Politikerna struntar i klimatforskningen : 420 forskare: Regeringens politik är katastrofal – nu måste fler svenskar kräva en omställning 2023 Ingår i: Aftonbladet Debatt. - 1103-9000. Tidskriftsartikel (populärvet., debatt m.m.)abstract DEBATE. We researchers have long demanded that the government take climate research seriously and speed up the transition to a sustainable society.Instead, the government is pursuing a policy that deliberately increases emissions. Now more citizens need to raise their voices and show that we demand a knowledge-based climate transition, and it is urgent.
5.	Rasmus, Sebastian, et al. (författare) Pricing of some exotic options with NIG-Levy input 2004 Ingår i: Computational Science - ICCS 2004. Proceedings Part IV. (Lecture Notes in Computer Science). - Berlin, Heidelberg : Springer Berlin Heidelberg. - 0302-9743 .- 1611-3349. - 9783540221296 ; 3039, s. 795-802 Konferensbidrag (refereegranskat)abstract We study the problem of pricing barrier options and Russian options driven by exponential NIG Levy processes by simulation. Simulating at a discrete grid creates a systematic bias because the minimum and maximum in between grid points is neglected. The proposed solution is to simulate the large jumps only and use a Brownian approximation for the rest combined with explicit formulas for Brownian minima and maxima.
6.	Rubenthaler, S, et al. (författare) Improved convergence rate for the simulation of stochastic differential equations driven by subordinated Levy processes 2003 Ingår i: Stochastic Processes and their Applications. - 1879-209X. ; 108:1, s. 1-26 Tidskriftsartikel (refereegranskat)abstract We consider the Euler approximation of stochastic differential equations (SDEs) driven by Levy processes in the case where we cannot simulate the increments of the driving process exactly. In some cases, where the driving process Y is a subordinated stable process, i.e., Y = Z(V) with V a subordinator and Z a stable process, we propose an approximation Y by Z(V-n) where V-n is an approximation of V. We then compute the rate of convergence for the approximation of the solution X of an SDE driven by Y using results about the stability of SDEs. (C) 2003 Elsevier B.V. All rights reserved.
7.	Sigström, Robert, 1982, et al. (författare) Prevalence of social phobia in non-demented elderly from a Swedish population study. 2008 Ingår i: 14th AEP Symposium. Dubrovnik 2008. Konferensbidrag (refereegranskat)

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Typ av publikation: tidskriftsartikel (5); konferensbidrag (2)

Typ av innehåll: refereegranskat (6); populärvet., debatt m.m. (1)

Författare/redaktör: Mccormick, Kes (1); Johansson, L (1); Abdelhady, Dalia (1); Gren, Nina (1); Ardö, Jonas (1); Malmqvist, Ebba (1); visa fler...; Isaxon, Christina (1); Friberg, Johan (1); Becker, Per (1); Waern, Margda, 1955 (1); Skoog, Ingmar, 1954 (1); Olsson, Gustaf (1); Alcer, David (1); Busch, Henner (1); Gabrielsson, Sara (1); Krause, Torsten (1); Stripple, Johannes (1); Thorén, Henrik (1); Skoog, I (1); Karlsson, B (1); Bergman Rosamond, An ... (1); Maad Sasane, Sara (1); Persson, Anna S. (1); Roldin, Pontus (1); Nilsson, Lovisa (1); Frank, Göran (1); Johansson, Thomas B (1); Kritzberg, Emma (1); Olsson, Lennart (1); Persson, Andreas (1); Sporre, Moa (1); Sigström, Robert, 19 ... (1); Östling, Svante, 195 ... (1); Persson, Tomas (1); Bark, Glenn (1); Richter, Jessika Lut ... (1); Stroh, Emilie (1); Glantz, Paul (1); Dahlner, Anders (1); May, Wilhelm (1); Allesson, Jonas (1); Avery, Helen (1); Gustafsson, D. (1); Runeson, B. (1); Hildingsson, Roger (1); Skelton, Alasdair (1); Koch, Max (1); Eklund, Lina (1); Gerhardt, Karin (1); Libertson, Frans (1); visa färre...

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