@article{SparlaWueller1985, author = {Sparla, Peter and W{\"u}ller, Herbert}, title = {QL 300 D, ein Nivelliersystem mit Halbleiterlaserdiode}, series = {Der Vermessungsingenieur. 36 (1985), H. 1}, journal = {Der Vermessungsingenieur. 36 (1985), H. 1}, isbn = {0042-4099}, pages = {2 -- 4}, year = {1985}, language = {de} } @article{BienerSasse1993, author = {Biener, Ernst and Sasse, T.}, title = {Quality improvements in the construction of multilayer covers}, series = {G{\´e}ologie et confinement des d{\´e}chets toxiques : actes du symposium international, 8 - 11 juin 1993 / GEOCONFINE 93, Montpellier, France. R{\´e}d. Marcel Arnould}, journal = {G{\´e}ologie et confinement des d{\´e}chets toxiques : actes du symposium international, 8 - 11 juin 1993 / GEOCONFINE 93, Montpellier, France. R{\´e}d. Marcel Arnould}, publisher = {Balkema}, address = {Rotterdam [u.a.]}, isbn = {90-5410-330-2}, pages = {309 -- 312}, year = {1993}, language = {en} } @article{BleckenHolthausSellheier2011, author = {Blecken, Udo and Holthaus-Sellheier, Ursula}, title = {Quantitative Prognoseverfahren f{\"u}r den B{\"u}roimmobilienmarkt, Tl.1}, series = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, volume = {21}, journal = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, number = {1}, publisher = {Werner}, address = {K{\"o}ln}, isbn = {0938-0175}, pages = {30 -- 39}, year = {2011}, language = {de} } @article{BleckenHolthausSellheier2011, author = {Blecken, Udo and Holthaus-Sellheier, Ursula}, title = {Quantitative Prognoseverfahren f{\"u}r den B{\"u}roimmobilienmarkt. Tl. 2}, series = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, volume = {21}, journal = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, number = {3}, publisher = {Werner}, address = {K{\"o}ln}, isbn = {0938-0175}, pages = {156 -- 163}, year = {2011}, language = {de} } @article{BleckenHolthausSellheier2012, author = {Blecken, Udo and Holthaus-Sellheier, Ursula}, title = {Quantitative Prognoseverfahren f{\"u}r Mietpreise von Bueroimmobilien am Beispiel D{\"u}sseldorf}, series = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, volume = {23}, journal = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert}, number = {1}, publisher = {Werner}, address = {K{\"o}ln}, issn = {0938-0175}, pages = {12 -- 21}, year = {2012}, language = {de} } @article{BaltzerMayer2003, author = {Baltzer, Wolfgang and Mayer, Georg}, title = {Quantitative Sicherheitsbewertung und optimierte Fluchtwegkennzeichnung f{\"u}r Brandunf{\"a}lle in Strassentunneln}, series = {Tunnel - Lebensadern der mobilen Gesellschaft : Vortr{\"a}ge der STUVA-Tagung 2003 in Dortmund / veranst. von der Studiengesellschaft f{\"u}r Unterirdische Verkehrsanlagen e.V.}, journal = {Tunnel - Lebensadern der mobilen Gesellschaft : Vortr{\"a}ge der STUVA-Tagung 2003 in Dortmund / veranst. von der Studiengesellschaft f{\"u}r Unterirdische Verkehrsanlagen e.V.}, publisher = {Bertelsmann}, address = {G{\"u}tersloh}, isbn = {3-7625-3602-3}, pages = {135 -- 141}, year = {2003}, language = {de} } @article{GrossBerger2005, author = {Groß, Rolf Fritz and Berger, J.}, title = {Quo Vadis - Ausblick in die Geb{\"a}udeleittechnik der Zukunft}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {56}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {1}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {39 -- 41}, year = {2005}, abstract = {Auf dem Weg zum vernetzten Haus stoßen Hersteller und Planer, insbesondere im privaten Wohnungsbau, zur Zeit noch auf erhebliche Widerst{\"a}nde bei der Durchdringung des Marktes.}, language = {de} } @article{Baltzer2005, author = {Baltzer, Wolfgang}, title = {RABT 2010? - Perspektiven f{\"u}r die Sicherheit in Strassentunneln}, series = {Straßenverkehrstechnik. 49 (2005), H. 3}, journal = {Straßenverkehrstechnik. 49 (2005), H. 3}, isbn = {0039-2219}, pages = {113 -- 119}, year = {2005}, language = {de} } @article{BungValero2018, author = {Bung, Daniel B. and Valero, Daniel}, title = {Re-aeration on stepped spillways with special consideration of entrained and entrapped air}, series = {Geosciences}, volume = {8}, journal = {Geosciences}, number = {9}, publisher = {MDPI}, address = {Basel}, issn = {2076-3263}, pages = {Article number 333}, year = {2018}, abstract = {As with most high-velocity free-surface flows, stepped spillway flows become self-aerated when the drop height exceeds a critical value. Due to the step-induced macro-roughness, the flow field becomes more turbulent than on a similar smooth-invert chute. For this reason, cascades are oftentimes used as re-aeration structures in wastewater treatment. However, for stepped spillways as flood release structures downstream of deoxygenated reservoirs, gas transfer is also of crucial significance to meet ecological requirements. Prediction of mass transfer velocities becomes challenging, as the flow regime differs from typical previously studied flow conditions. In this paper, detailed air-water flow measurements are conducted on stepped spillway models with different geometry, with the aim to estimate the specific air-water interface. Re-aeration performances are determined by applying the absorption method. In contrast to earlier studies, the aerated water body is considered a continuous mixture up to a level where 75\% air concentration is reached. Above this level, a homogenous surface wave field is considered, which is found to significantly affect the total air-water interface available for mass transfer. Geometrical characteristics of these surface waves are obtained from high-speed camera investigations. The results show that both the mean air concentration and the mean flow velocity have influence on the mass transfer. Finally, an empirical relationship for the mass transfer on stepped spillway models is proposed.}, language = {en} } @article{DemnyHebel2014, author = {Demny, Andreas and Hebel, Christoph}, title = {Rechnergest{\"u}tzte Ermittlung der Verbindungsfunktionsstufen und der verbindungsbezogenen Angebotsqualit{\"a}t nach den Richtlinien f{\"u}r integrierte Netzgestaltung nach RIN 2008}, series = {Straßenverkehrstechnik : Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr ; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik}, volume = {Jg. 58}, journal = {Straßenverkehrstechnik : Organ der Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, der Bundesvereinigung der Straßenbau- und Verkehrsingenieure und der {\"O}sterreichischen Forschungsgesellschaft Straße und Verkehr ; Zeitschrift f{\"u}r Verkehrsplanung, Verkehrsmanagement, Verkehrssicherheit, Verkehrstechnik}, number = {H. 12}, publisher = {Kirschbaum Verlag}, address = {Bonn}, issn = {0039-2219}, pages = {811 -- 820}, year = {2014}, language = {de} } @book{BlassUibel2011, author = {Blaß, Hans Joachim and Uibel, Thomas}, title = {Rechnerische Nachweise f{\"u}r das Spaltversagen von Holz in Haupt-Nebentr{\"a}ger-Anschl{\"u}ssen. Teil 1: Entwicklung eines Rechenmodells}, publisher = {Fraunhofer IRB}, address = {Stuttgart}, isbn = {978-3-8167-8586-6}, pages = {VIII, 180 S. : Ill., zahlr. graph. Darst.}, year = {2011}, language = {de} } @book{BlassUibel2011, author = {Blaß, Hans Joachim and Uibel, Thomas}, title = {Rechnerische Nachweise f{\"u}r das Spaltversagen von Holz in Haupt-Nebentr{\"a}ger-Anschl{\"u}ssen. Teil 2: {\"U}berpr{\"u}fung und Erweiterung des Rechenmodells}, publisher = {Fraunhofer IRB}, address = {Stuttgart}, isbn = {978-3-8167-8588-0}, pages = {VIII, 164 S. : Ill., zahlr. graph. Darst.}, year = {2011}, language = {de} } @article{ValeroBung2018, author = {Valero, Daniel and Bung, Daniel B.}, title = {Reformulating self-aeration in hydraulic structures: Turbulent growth of free surface perturbations leading to air entrainment}, series = {International Journal of Multiphase Flow}, volume = {100}, journal = {International Journal of Multiphase Flow}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0301-9322}, doi = {10.1016/j.ijmultiphaseflow.2017.12.011}, pages = {127 -- 142}, year = {2018}, abstract = {A new formulation for the prediction of free surface dynamics related to the turbulence occurring nearby is proposed. This formulation, altogether with a breakup criterion, can be used to compute the inception of self-aeration in high velocity flows like those occurring in hydraulic structures. Assuming a simple perturbation geometry, a kinematic and a non-linear momentum-based dynamic equation are formulated and forces acting on a control volume are approximated. Limiting steepness is proposed as an adequate breakup criterion. Role of the velocity fluctuations normal to the free surface is shown to be the main turbulence quantity related to self-aeration and the role of the scales contained in the turbulence spectrum are depicted. Surface tension force is integrated accounting for large displacements by using differential geometry for the curvature estimation. Gravity and pressure effects are also contemplated in the proposed formulation. The obtained equations can be numerically integrated for each wavelength, hence resulting in different growth rates and allowing computation of the free surface roughness wavelength distribution. Application to a prototype scale spillway (at the Aviemore dam) revealed that most unstable wavelength was close to the Taylor lengthscale. Amplitude distributions have been also obtained observing different scaling for perturbations stabilized by gravity or surface tension. The proposed theoretical framework represents a new conceptualization of self-aeration which explains the characteristic rough surface at the non-aerated region as well as other previous experimental observations which remained unresolved for several decades.}, language = {en} } @article{KuckDoering1997, author = {Kuck, Herbert and D{\"o}ring, Bernd}, title = {Regenerative Energien in Landesbauten : Land NRW unterst{\"u}tzt Einsatz erneuerbarer Energien 1997 mit 15 Mio. DM}, series = {Die Bauverwaltung mit Bauamt und Gemeindebau}, volume = {Bd. 70}, journal = {Die Bauverwaltung mit Bauamt und Gemeindebau}, number = {H. 8}, issn = {0005-6847}, pages = {384 -- 386}, year = {1997}, language = {de} } @article{Biener1985, author = {Biener, Ernst}, title = {Rehabilitation of old gravity dams}, series = {[Transactions] : proceedings of fifteenth international congress on large dams ; 24 - 28 Juin 1985, Lausanne, Suisse = Quinzieme Congres International des Grands Barrages. - Bd. 4}, journal = {[Transactions] : proceedings of fifteenth international congress on large dams ; 24 - 28 Juin 1985, Lausanne, Suisse = Quinzieme Congres International des Grands Barrages. - Bd. 4}, publisher = {Intern. Commission on Large Dams}, address = {Paris}, pages = {Q 59, R.2, S. 21 -- 23}, year = {1985}, language = {en} } @techreport{LawsonBaddooVanieretal.2013, author = {Lawson, R.M. and Baddoo, N.R. and Vanier, G. and D{\"o}ring, Bernd and Kuhnhenne, M. and Nieminen, J. and Beguin, P. and Herbin, S. and Caroli, G. and Adetunji, I. and Kozlowski, A.}, title = {Renovation of buildings using steel technologies (Robust) - EUR 25335}, publisher = {Publications Office of the European Union}, address = {Luxembourg}, organization = {European Commission}, isbn = {978-92-79-24950-1}, issn = {1831-9424}, doi = {10.2777/97860}, pages = {134 Seiten}, year = {2013}, abstract = {Robust addresses the renovation and improvement of existing residential, industrial and commercial buildings using steel-based technologies, focusing on techniques such as over-cladding, over-roofing and roof-top extensions. Steel-intensive renovation techniques currently on the market were reviewed. Performance criteria were developed for over-cladding systems meeting current regulatory standards, with guidelines on how to achieve appropriate levels of air-tightness.}, language = {en} } @book{Baltzer2003, author = {Baltzer, Wolfgang}, title = {Richtlinien f{\"u}r die Ausstattung und den Betrieb von Straßentunneln : RABT / Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, Arbeitsgruppe Verkehrsf{\"u}hrung und Verkehrssicherheit. [Arbeitsgruppe Verkehrsf{\"u}hrung und Verkehrssicherheit, Arbeitsausschuss Ausstattung und Betrieb von Straßentunneln. Leiter: Wolfgang Baltzer]. Ausg. 2003}, publisher = {FGSV-Verl.}, address = {K{\"o}ln}, pages = {61 S.}, year = {2003}, language = {de} } @book{Baltzer2006, author = {Baltzer, Wolfgang}, title = {Richtlinien f{\"u}r die Ausstattung und den Betrieb von Straßentunneln : RABT / Forschungsgesellschaft f{\"u}r Straßen- und Verkehrswesen, Arbeitsgruppe Verkehrsf{\"u}hrung und Verkehrssicherheit. [Arbeitsgruppe Verkehrsf{\"u}hrung und Verkehrssicherheit, Arbeitsausschuss Ausstattung und Betrieb von Straßentunneln. Leiter: Wolfgang Baltzer]. Ausg. 2006}, publisher = {FGSV-Verl.}, address = {K{\"o}ln}, isbn = {3-937356-87-8}, pages = {67 S. : Ill., graph. Darst.}, year = {2006}, language = {de} } @article{BaltzerRiepeMerz2001, author = {Baltzer, Wolfgang and Riepe, Werner and Merz, Hans}, title = {Risikoanalyse zum Transport gef{\"a}hrlicher G{\"u}ter durch Straßentunnel - Abw{\"a}gungsprozesse im Internationalen Vergleich}, series = {Unterirdisches Bauen 2001 : Wege in die Zukunft ; Vortr{\"a}ge der STUVA-Tagung 2001 in M{\"u}nchen / veranst. von der Studiengesellschaft f{\"u}r Unterirdische Verkehrsanlagen e.V., (STUVA), K{\"o}ln}, journal = {Unterirdisches Bauen 2001 : Wege in die Zukunft ; Vortr{\"a}ge der STUVA-Tagung 2001 in M{\"u}nchen / veranst. von der Studiengesellschaft f{\"u}r Unterirdische Verkehrsanlagen e.V., (STUVA), K{\"o}ln}, publisher = {Bertelsmann}, address = {G{\"u}tersloh}, isbn = {3-9803390-7-6}, pages = {204 -- 211}, year = {2001}, language = {de} } @article{KirsteinMuellerWaleckiMingersetal.2012, author = {Kirstein, Simon and M{\"u}ller, Karsten and Walecki-Mingers, Mark and Deserno, Thomas M.}, title = {Robust adaptive flow line detection in sewer pipes}, series = {Automation in construction}, journal = {Automation in construction}, number = {21}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7891 (E-Journal) ; 0926-5805 (Print)}, doi = {10.1016/j.autcon.2011.05.009}, pages = {24 -- 31}, year = {2012}, abstract = {As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.}, language = {en} }