Showing items with similar title or keywords.

• Superconvergence phenomenon in the finite element method arising from averaging gradients 

  Křižek, Michal; Neittaanmäki, Pekka (Springer, 1984)

  We study a superconvergence phenomenon which can be obtained when solving a 2nd order elliptic problem by the usual linear elements. The averaged gradient is a piecewise linear continuous vector field, the value of which ...

• On different finite element methods for approximating the gradient of the solution to the helmholtz equation 

  Haslinger, Jaroslav; Neittaanmäki, Pekka (North-Holland, 1984)

  We consider the numerical solution of the Helmholtz equation by different finite element methods. In particular, we are interested in finding an efficient method for approximating the gradient of the solution. We first ...

• Computation of generalized time-periodic waves using differential forms, exact controllability, least-squares formulation, conjugate gradient method and discrete exterior calculus Part 1, Theoretical considerations 

  Pauly, Dirk; Rossi, Tuomo (University of Jyväskylä, 2008)

• Adaptation to a seasonally varying environment: a strong latitudinal cline in reproductive diapause combined with high gene flow in Drosophila montana 

  Tyukmaeva, Venera; Salminen, Tiina; Kankare, Maaria; Knott, Emily; Hoikkala, Anneli (Wiley-Blackwell, 2011)

  Adaptation to seasonal changes in the northern hemisphere includes an ability to predict the forthcoming cold season from gradual changes in environmental cues early enough to prepare for the harsh winter conditions. The ...

• Eco-physiological aspects of adaptation to seasonal environments : the latitudinal range expansion of the Colorado potato beetle across Europe 

  Lehmann, Philipp (University of Jyväskylä, 2013)