@article{VogtMottaghyWolfetal.2010,
  author    = {Vogt, C. and Mottaghy, Darius and Wolf, A. and Rath, V. and Pechnig, R. and Clauser, C.},
  title     = {Reducing temperature uncertainties by stochastic geothermal reservoir modelling},
  series = {Geophysical Journal International},
  volume    = {181},
  journal   = {Geophysical Journal International},
  number    = {1},
  publisher = {Oxford University Press},
  address   = {Oxford},
  issn      = {1365-246X},
  doi       = {10.1111/j.1365-246X.2009.04498.x},
  pages     = {321 -- 333},
  year      = {2010},
  abstract  = {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.},
  language  = {en}
}
@article{ButenwegGellertSchlundt2010,
  author    = {Butenweg, Christoph and Gellert, Christoph and Schlundt, Andreas},
  title     = {Nichtlinearer Erdbebennachweis von Geb{\"a}uden aus Kalksandsteinmauerwerk nach DIN EN 1998},
  series = {Mauerwerk : European journal of masonry},
  volume    = {14},
  journal   = {Mauerwerk : European journal of masonry},
  number    = {3},
  publisher = {Ernst \& Sohn},
  address   = {Berlin},
  issn      = {1432-3427},
  doi       = {10.1002/dama.201000463},
  pages     = {120 -- 125},
  year      = {2010},
  abstract  = {Die Erdbebensicherheit von Geb{\"a}uden aus Kalksandsteinmauerwerk ist aktuell nach DIN 4149 mit linearen Verfahren nachzuweisen. Dies f{\"u}hrt in der praktischen Anwendung zu großen Problemen, da selbst traditionell {\"u}bliche Grundrisse teilweise nicht mehr ohne zus{\"a}tzliche Maßnahmen nachweisbar sind. Zur L{\"o}sung dieser Problematik wurden von der deutschen Mauerwerksindustrie auf nationaler und europ{\"a}ischer Ebene Forschungsprojekte initiiert, deren Ergebnisse in Form von statisch nichtlinearen Verfahren Eingang in den Nationalen Anhang zur DIN EN 1998-1 [12] gefunden haben. Mit den Verfahren wird die Nachweissituation zuk{\"u}nftig grundlegend verbessert, da mit diesen die Tragwerksreserven wesentlich besser ausgenutzt werden k{\"o}nnen. Im Folgenden wird die Anwendung der Verfahren am Beispiel einer Reihenhauszeile aus Kalksandsteinmauerwerk demonstriert. Der Nachweis der Reihenh{\"a}user wurde im Rahmen einer Zustimmung im Einzelfall, die vom Bundesverband Kalksandsteinindustrie eV in Hannover koordiniert wurde, durch unabh{\"a}ngige Gutachter und die Bauaufsicht eingehend gepr{\"u}ft und f{\"u}r richtig befunden. Die Durchf{\"u}hrung des Nachweises erfolgte auf Grundlage eines an der RWTH Aachen entwickelten neuen Nachweiskonzeptes. Die baupraktische Anwendbarkeit und einfache Nachvollziehbarkeit dieses Konzepts ist durch eine softwaretechnische Umsetzung sichergestellt.},
  language  = {de}
}
@article{ButenwegFaeckeFehlingetal.2010,
  author    = {Butenweg, Christoph and F{\"a}cke, Andreas and Fehling, Ekkehard and Gellert, Christoph and Gierga, Michael and Meyer, Udo and R{\"u}tschlin, Andreas H. and St{\"u}rz, Jochen},
  title     = {Energieeffizient und erdbebensicher Bauen mit monolithischem Ziegelmauerwerk},
  series = {Mauerwerk : European journal of masonry},
  volume    = {14},
  journal   = {Mauerwerk : European journal of masonry},
  number    = {1},
  publisher = {Ernst \& Sohn},
  address   = {Berlin},
  issn      = {1432-3427},
  doi       = {10.1002/dama.201000456},
  pages     = {3 -- 9},
  year      = {2010},
  abstract  = {Moderne Bauwerke m{\"u}ssen heute eine hohe energetische Leistungsf{\"a}higkeit aufweisen und gleichzeitig alle einwirkenden Lasten sicher abtragen. Dies stellt insbesondere in Erdbebengebieten hohe Anforderungen an die verwendeten Baustoffe. Am baupraktischen Beispiel einer Doppelhaush{\"a}lfte wird demonstriert, dass die Symbiose aus energieeffizientem und gleichzeitig erdbebensicherem Bauen in der h{\"o}chsten deutschen Erdbebenzone mit monolithischem Ziegelmauerwerk gut realisierbar ist. Als Ziegelmauerwerk werden f{\"u}r die Außenw{\"a}nde w{\"a}rmetechnisch optimierte Hochlochziegel verwendet, die sowohl die Anforderungen der Energieeinsparverordnung 2009 als auch die Anforderungen an Mauerwerkbaustoffe nach den aktuellen Erdbebennormen erf{\"u}llen. Der Erdbebennachweis der Doppelhaush{\"a}lfte erfolgt mit einem nichtlinearen Nachweisverfahren, das f{\"u}r eine einfache praktische Anwendung programmtechnisch umgesetzt wurde. F{\"u}r den Nachweis wurden aus zyklischen Schubwandversuchen ermittelte Last-Verformungskurven verwendet. Das gesamte in Deutschland noch nicht normativ geregelte Nachweiskonzept wurde im Rahmen einer Zustimmung im Einzelfall gepr{\"u}ft und genehmigt.},
  language  = {de}
}
@article{Kirsch2010,
  author    = {Kirsch, Ansgar},
  title     = {Experimental investigation of the face stability of shallow tunnels in sand},
  series = {Acta Geotechnica},
  volume    = {5},
  journal   = {Acta Geotechnica},
  number    = {1},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1861-1125},
  doi       = {10.1007/s11440-010-0110-7},
  pages     = {43 -- 62},
  year      = {2010},
  abstract  = {Various models have been proposed for the prediction of the necessary support pressure at the face of a shallow tunnel. To assess their quality, the collapse of a tunnel face was modelled with small-scale model tests at single gravity. The development of the failure mechanism and the support force at the face in dry sand were investigated. The observed displacement patterns show a negligible influence of overburden on the extent and evolution of the failure zone. The latter is significantly influenced, though, by the initial density of the sand: in dense sand a chimney-wedge-type collapse mechanism developed, which propagated towards the soil surface. Initially, loose sand did not show any discrete collapse mechanism. The necessary support force was neither influenced by the overburden nor the initial density. A comparison with quantitative predictions by several theoretical models showed that the measured necessary support pressure is overestimated by most of the models. Those by Vermeer/Ruse and L{\´e}ca/Dormieux showed the best agreement to the measurements.},
  language  = {en}
}
@article{BolikLinzbach2010,
  author    = {Bolik, Andreas and Linzbach, Meike},
  title     = {Verluste und Zinsschranke in der Bilanzierung latenter Steuern},
  series = {Deutsches Steuerrecht : DStR ; Wochenschrift \& umfassende Datenbank f{\"u}r Steuerberater ; Steuerrecht, Wirtschaftsrecht, Betriebswirtschaft, Beruf ; Organ der Bundessteuerberaterkammer},
  volume    = {48},
  journal   = {Deutsches Steuerrecht : DStR ; Wochenschrift \& umfassende Datenbank f{\"u}r Steuerberater ; Steuerrecht, Wirtschaftsrecht, Betriebswirtschaft, Beruf ; Organ der Bundessteuerberaterkammer},
  number    = {31},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  issn      = {0012-1347},
  pages     = {1587 -- 1590},
  year      = {2010},
  abstract  = {Latente Steuern stellen eine Schnittstelle zwischen handelsrechtlicher Rechnungslegung und Steuerrecht dar. Das Verh{\"a}ltnis von Handels- und Steuerrecht ist dabei keinesfalls stetig; vielmehr fordert die Dynamik des deutschen Steuerrechts in vielen Bereichen regelm{\"a}ßige Anpassungen in der Bilanzierung in Handels- und Steuerbilanz. Dies gilt insbesondere f{\"u}r die Bilanzierung latenter Steuern im handelsrechtlichen Jahresabschluss, welche durch das BilMoG deutlich an Bedeutung gewonnen hat. Neben latenten Steuern auf tempor{\"a}re Differenzen ist es nunmehr erforderlich, Verlustvortr{\"a}ge und die Folgen der Zinsschranke bei der Berechnung latenter Steuern zu ber{\"u}cksichtigen. Der nachfolgende Beitrag geht auf die Ber{\"u}cksichtigung von Verlust- und Zinsvortr{\"a}gen und die Ber{\"u}cksichtigungsf{\"a}higkeit von EBITDA-Vortr{\"a}gen bei der Berechnung latenter Steuern ein und beleuchtet dabei insbesondere auch praktische Fragestellungen.},
  language  = {de}
}
@article{FellinKingKirschetal.2010,
  author    = {Fellin, Wolfgang and King, Julian and Kirsch, Ansgar and Oberguggenberger, Michael},
  title     = {Uncertainty modelling and sensitivity analysis of tunnel face stability},
  series = {Structural safety},
  volume    = {32},
  journal   = {Structural safety},
  number    = {6},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-4730},
  doi       = {10.1016/j.strusafe.2010.06.001},
  pages     = {402 -- 410},
  year      = {2010},
  abstract  = {This paper proposes an approach to the choice and evaluation of engineering models with the aid of a typical application in geotechnics. An important issue in the construction of shallow tunnels, especially in weak ground conditions, is the tunnel face stability. Various theoretical and numerical models for predicting the necessary support pressure have been put forth in the literature. In this paper, we combine laboratory experiments performed at the University of Innsbruck with current methods of uncertainty and sensitivity analysis for assessing adequacy, predictive power and robustness of the models. The major issues are the handling of the twofold uncertainty of test results and of model predictions as well as the decision about what are the influential input parameters.},
  language  = {en}
}
@article{FleischhakerEversDey2010,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg and Dey, Tarak N.},
  title     = {Phase modulation induced by cooperative effects in electromagnetically induced transparency},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {82},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {1},
  publisher = {AIP Publishing},
  address   = {Melville, NY},
  issn      = {1050-2947},
  doi       = {10.1103/PhysRevA.82.013815},
  pages     = {013815},
  year      = {2010},
  abstract  = {We analyze the influence of dipole-dipole interactions in an electromagnetically induced transparency set up for a density at the onset of cooperative effects. To this end, we include mean-field models for the influence of local-field corrections and radiation trapping into our calculation. We show both analytically and numerically that the polarization contribution to the local field strongly modulates the phase of a weak pulse. We give an intuitive explanation for this local-field-induced phase modulation and demonstrate that it distinctively differs from the nonlinear self-phase-modulation that a strong pulse experiences in a Kerr medium.},
  language  = {en}
}
@article{MottaghyPechnigTaugsetal.2010,
  author    = {Mottaghy, Darius and Pechnig, Renate and Taugs, Renate and Kr{\"o}ger, Jens and Thomsen, Claudia and Hesse, Fabian and Liebsch-Doerschner, Thomas},
  title     = {Erstellung eines geothermischen Modells f{\"u}r Teile Hamburgs und anliegende Gebiete},
  series = {BBR - Fachmagazin f{\"u}r Brunnen- und Leitungsbau},
  volume    = {61},
  journal   = {BBR - Fachmagazin f{\"u}r Brunnen- und Leitungsbau},
  number    = {12},
  publisher = {WVGW Wirtschafts- u. Verl.Ges. Gas und Wasser},
  address   = {Bonn},
  issn      = {1611-1478},
  pages     = {52 -- 59},
  year      = {2010},
  language  = {de}
}
@article{Butenweg2010,
  author    = {Butenweg, Christoph},
  title     = {Bewertung der Erdbebensicherheit von bestehenden Bauwerken},
  series = {{\"O}sterreichische Ingenieur- und Architekten-Zeitschrift : {\"O}IAZ ; Zeitschr. d. {\"O}IAV / {\"O}sterreichischer Ingenieur- und Architekten-Verein},
  volume    = {155},
  journal   = {{\"O}sterreichische Ingenieur- und Architekten-Zeitschrift : {\"O}IAZ ; Zeitschr. d. {\"O}IAV / {\"O}sterreichischer Ingenieur- und Architekten-Verein},
  number    = {1-3 und 4-6},
  publisher = {{\"O}AIV},
  address   = {Wien},
  issn      = {0721-9415},
  pages     = {11 -- 17},
  year      = {2010},
  language  = {de}
}
@article{FontivonArxGarciaGonzalezetal.2010,
  author    = {Fonti, Patrick and von Arx, Georg and Garc{\´i}a-Gonz{\´a}lez, Ignacio and Eilmann, Britta and Sass-Klaassen, Ute G. W. and G{\"a}rtner, Holger and Eckstein, Dieter},
  title     = {Studying global change through investigation of the plastic responses of xylem anatomy in tree rings},
  series = {New Phytologist},
  volume    = {185},
  journal   = {New Phytologist},
  number    = {1},
  publisher = {Wiley-Blackwell},
  address   = {Oxford},
  issn      = {1469-8137 (Online)},
  doi       = {10.1111/j.1469-8137.2009.03030.x},
  pages     = {42 -- 53},
  year      = {2010},
  abstract  = {Variability in xylem anatomy is of interest to plant scientists because of the role water transport plays in plant performance and survival. Insights into plant adjustments to changing environmental conditions have mainly been obtained through structural and functional comparative studies between taxa or within taxa on contrasting sites or along environmental gradients. Yet, a gap exists regarding the study of hydraulic adjustments in response to environmental changes over the lifetimes of plants. In trees, dated tree-ring series are often exploited to reconstruct dynamics in ecological conditions, and recent work in which wood-anatomical variables have been used in dendrochronology has produced promising results. Environmental signals identified in water-conducting cells carry novel information reflecting changes in regional conditions and are mostly related to short, sub-annual intervals. Although the idea of investigating environmental signals through wood anatomical time series goes back to the 1960s, it is only recently that low-cost computerized image-analysis systems have enabled increased scientific output in this field. We believe that the study of tree-ring anatomy is emerging as a promising approach in tree biology and climate change research, particularly if complemented by physiological and ecological studies. This contribution presents the rationale, the potential, and the methodological challenges of this innovative approach.},
  language  = {en}
}