Zobrazeno 1 - 10
of 42
pro vyhledávání: '"K. Karkkainen"'
Publikováno v:
Phys. Rev. B 70, 195310 (2004)
Quantum dots with conduction electrons or holes originating from several bands are considered. We assume the particles are confined in a harmonic potential and assume the electrons (or holes) belonging to different bands to be different types of ferm
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405107
Akademický článek
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Akademický článek
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Publikováno v:
2016 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM).
Excellence of operations can support all selected strategies. Process excellence is fundamental for companies to be able to implement a chosen strategy. Small and medium size enterprises (SMEs) in the manufacturing industry are no exception to this r
Autor:
K. Karkkainen, Christer Tornevik, Björn Hansson, M.L. Strydom, P. Zollman, Bjorn Thors, F. J. C. Meyer, Sami Ilvonen
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 50:837-848
In this paper, maximum specific absorption rate (SAR) estimation formulas for RF main beam exposure from mobile communication base station antennas are proposed. The formulas, given for both whole-body SAR and localized SAR, are heuristic in nature a
Publikováno v:
The European Physical Journal D. 43:225-228
We compare magnetism in two artificial lattice structures, a quantum dot array formed in a two-dimensional electron gas and an optical lattice loaded with repulsive, contact-interacting fermionic atoms. When the tunneling between the lattice sites is
Publikováno v:
Microwave and Optical Technology Letters. 39:326-333
In this paper, photonic-bandgap-waveguide (PBG-WG) structures are considered. The WGs are based entirely on linear dielectric media. Analysis is based on numerical field computation by FDTD and post-processing of the field data. A 120° PBG-WG bend i
Autor:
K. Karkkainen, M. Stuchly
Publikováno v:
IEE Proceedings - Microwaves, Antennas and Propagation. 149:248-252
The polarisation transformation properties of frequency selective surfaces are reported. Examples of microstrip structures which transform polarisation from linear to circular are described. A relatively broadband polarisation transformer can be desi
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 39:1013-1018
The present paper reports the results of a numerical analysis of electric fields in random dielectric materials. The effective permittivity of a three-dimensional (3D) dielectric mixture is calculated by the finite difference method. The results show
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 38:1303-1308
The present paper reports the results of an extensive numerical analysis of electromagnetic fields in random dielectric materials. The effective permittivity of a two-dimensional (2-D) dielectric mixture is calculated by FDTD simulations of such a sa