TY  - JOUR
A1  - Maezawa, Koichi
A1  - Förster, Arnold
T1  - Quantum transport devices based on resonant tunneling
JF  - Nanoelectronics and information technology : advanced electronic materials and novel devices / Rainer Waser (ed.).
Y1  - 2003
SN  - 3-527-40363-9
SP  - 407
EP  - 424
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Tewordt, M.
A1  - Blick, R. H.
T1  - Quantum-dot ground states in a magnetic field studied by single-electron tunneling spectroscopy on double-barrier heterostructures / T. Schmidt ; M. Tewordt ; R. H. Blick ... A. Förster ...
JF  - Physical Review B . 51 (1995), H. 8
Y1  - 1995
SN  - 0163-1829
N1  - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795
SP  - 5570
EP  - 5573
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lohe, C.
A1  - Leuther, A.
T1  - Quasi-two-dimensional plasmons of a single δ-doped layer in GaAs studied by high-resolution electron-energy-loss spectroscopy / C. Lohe ; A. Leuther ; A. Förster ...
JF  - Physical Review B . 47 (1993), H. 7
Y1  - 1993
SN  - 0163-1829
N1  - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795
SP  - 3819
EP  - 3826
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Börner, H. G.
A1  - Robinson, S.
T1  - Recent developments at the ILL (n,γ)-facility
JF  - Journal of Physics G. 14 (1988), H. S
Y1  - 1988
SN  - 0305-4616
SP  - S161
EP  - S165
ER  - 
TY  - JOUR
A1  - Vogt, C.
A1  - Mottaghy, Darius
A1  - Wolf, A.
A1  - Rath, V.
A1  - Pechnig, R.
A1  - Clauser, C.
T1  - Reducing temperature uncertainties by stochastic geothermal reservoir modelling
JF  - Geophysical Journal International
N2  - Quantifying and minimizing uncertainty is vital for simulating technically and economically successful geothermal reservoirs. To this end, we apply a stochastic modelling sequence, a Monte Carlo study, based on (i) creating an ensemble of possible realizations of a reservoir model, (ii) forward simulation of fluid flow and heat transport, and (iii) constraining post-processing using observed state variables. To generate the ensemble, we use the stochastic algorithm of Sequential Gaussian Simulation and test its potential fitting rock properties, such as thermal conductivity and permeability, of a synthetic reference model and—performing a corresponding forward simulation—state variables such as temperature. The ensemble yields probability distributions of rock properties and state variables at any location inside the reservoir. In addition, we perform a constraining post-processing in order to minimize the uncertainty of the obtained distributions by conditioning the ensemble to observed state variables, in this case temperature. This constraining post-processing works particularly well on systems dominated by fluid flow. The stochastic modelling sequence is applied to a large, steady-state 3-D heat flow model of a reservoir in The Hague, Netherlands. The spatial thermal conductivity distribution is simulated stochastically based on available logging data. Errors of bottom-hole temperatures provide thresholds for the constraining technique performed afterwards. This reduce the temperature uncertainty for the proposed target location significantly from 25 to 12 K (full distribution width) in a depth of 2300 m. Assuming a Gaussian shape of the temperature distribution, the standard deviation is 1.8 K. To allow a more comprehensive approach to quantify uncertainty, we also implement the stochastic simulation of boundary conditions and demonstrate this for the basal specific heat flow in the reservoir of The Hague. As expected, this results in a larger distribution width and hence, a larger, but more realistic uncertainty estimate. However, applying the constraining post-processing the uncertainty is again reduced to the level of the post-processing without stochastic boundary simulation. Thus, constraining post-processing is a suitable tool for reducing uncertainty estimates by observed state variables.
Y1  - 2010
U6  - http://dx.doi.org/10.1111/j.1365-246X.2009.04498.x
SN  - 1365-246X
VL  - 181
IS  - 1
SP  - 321
EP  - 333
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schäpers, T.
A1  - Müller, F.
A1  - Lengeler, B.
T1  - Reflection and transmission of ballistic electrons at a potential barrier / Schäpers, T.  ; Müller, F.  ; Förster, A. ; Lengeler, B. ; Lüth, H.
JF  - Superlattices and microstructures . 14 (1993), H. 1
Y1  - 1993
SN  - 0749-6036
SP  - 57
ER  - 
TY  - JOUR
A1  - Thielemann, Frank
A1  - Staudt, Erich
T1  - Reicht die Kompetenz zur Innovation? Staudt, E.; Thielemann, F.
JF  - OP DruckMagazin. 39 (1997), H. 10
Y1  - 1997
SN  - 0030-0594
SP  - 30
EP  - 32
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Mölter, W.
A1  - Haller, P.
T1  - Representative Dilution of Aerosols by a Factor of 10,000
JF  - Journal of Aerosol Science. 21 (1990), H. Suppl. 1
Y1  - 1990
SN  - 0021-8502
SP  - 637
EP  - 640
ER  - 
TY  - JOUR
A1  - Vitusevich, S. A.
A1  - Förster, Arnold
A1  - Lüth, H.
A1  - Belyaev, A. E.
A1  - Danylyuk, S. V.
A1  - Konakova, R. V.
A1  - Sheka, D. I.
T1  - Resonant spectroscopy of electric-field-induced superlattices
JF  - Journal of Applied Physics. 90 (2001), H. 6
Y1  - 2001
SN  - 1089-7550
U6  - http://dx.doi.org/10.1063/1.1392956
SP  - 2857
EP  - 2861
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Resonant tunneling diodes : the effect of structural properties on their performance
JF  - Festkörperprobleme = Advances in solid state physics. 33 (1994)
Y1  - 1994
SN  - 0065-3357
N1  - Review ; 2. ISSN: 0430-3393
SP  - 37
EP  - 62
ER  -