@book{BudelmannButenweg2019, author = {Budelmann, Harald and Butenweg, Christoph}, title = {Mauerwerksbau: Bemessung und Konstruktion : Baustoffe, Bemessung und Ausf{\"u}hrung, Brandschutz und Erdbeben, Nachhaltigkeit, Bewertung und Revitalisierung}, editor = {Gunkler, Erhard}, edition = {2. {\"u}berarbeitete und aktualisierte Auflage}, publisher = {Bundesanzeiger Verlag}, address = {K{\"o}ln}, isbn = {978-3-8462-0371-2}, pages = {XXIV, 738 S. ; Illustrationen, Diagramme}, year = {2019}, language = {de} } @masterthesis{Buhr2022, type = {Bachelor Thesis}, author = {Buhr, Amelie}, title = {Entschleunigen : warum unser Modekonsum verlangsamt werden muss}, publisher = {FH Aachen}, address = {Aachen}, pages = {141 Seiten}, year = {2022}, abstract = {In Zeiten von Schnelllebigkeit {\"a}ndern immer mehr Menschen bewusst ihren Umgang mit allt{\"a}glichen Dingen. Was dabei h{\"a}ufig in den Hintergrund r{\"u}ckt, ist das Thema "bewusste Kleidung". Beeinflusst durch sogenannte Fast-Fashion-Modeketten und Social Media leben wir in einer regelrechten Wegwerfgesellschaft. „Entschleunigen" besch{\"a}ftigt sich mit den Schattenseiten der Modeindustrie, zeigt aber ebenso (neue) Wege auf, die auf eine bessere Zukunft f{\"u}r uns und unsere Umwelt hoffen lassen. Aufgeteilt in zwei Kapitel gibt „Entschleunigen" einen Einblick in den {\"o}kologischen und sozialen Fußabdruck der Modeindustrie und stellt zum anderen die Gegenseite vor, bei der Wert auf faire Produktion und Nachhaltigkeit gelegt wird. Das Buch „Entschleunigen" soll {\"u}ber die Missst{\"a}nde in der Textilbranche informieren, jedoch im Umkehrschluss dazu motivieren, diese mit einfachen Mitteln zu verbessern.}, language = {de} } @inproceedings{BukhariYang2006, author = {Bukhari, Syed Faisal Ahmed and Yang, Wuqiang}, title = {Multi-interface level sensors and new development in monitoring and control of oil separators}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:a96-opus-1498}, year = {2006}, abstract = {In the oil industry, huge saving may be made if suitable multi-interface level measurement systems are employed for effectively monitoring crude oil separators and efficient control of their operation. A number of techniques, e.g. externally mounted displacers, differential pressure transmitters and capacitance rod devices, have been developed to measure the separation process with gas, oil, water and other components. Because of the unavailability of suitable multi-interface level measurement systems, oil separators are currently operated by the trial-and-error approach. In this paper some conventional techniques, which have been used for level measurement in industry, and new development are discussed.}, subject = {Biosensor}, language = {en} } @book{Bullerschen1987, author = {Bullerschen, Klaus-Gerd}, title = {Theoretische Untersuchungen zur thermischen Belastung der Elektroden des Lichtbogenofens und deren K{\"u}hlung durch Heat Pipes}, publisher = {Techn. Hochsch., Fak. f{\"u}r Bergbau, H{\"u}ttenwesen u. Geowiss.}, address = {Aachen}, pages = {121 S. : graph. Darst., 21 cm}, year = {1987}, language = {de} } @article{Bullerschen1990, author = {Bullerschen, Klaus-Gerd}, title = {Rechenmodelle zur Stromverdr{\"a}ngung in ein- und mehrphasigen elektrischen Leitungen komplexer Geometrie}, series = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4}, journal = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4}, isbn = {0340-3521}, pages = {199 -- 210}, year = {1990}, language = {de} } @article{Bullerschen1989, author = {Bullerschen, Klaus-Gerd}, title = {Hochtemperaturtechnik. Interne Arbeitssitzung des GVC-Fachausschusses 'Hochtemperaturtechnik'}, series = {Chemie Ingenieur Technik. 61 (1989), H. 6}, journal = {Chemie Ingenieur Technik. 61 (1989), H. 6}, isbn = {0009-286X}, pages = {510 -- 512}, year = {1989}, language = {de} } @article{BullerschenLeonard1990, author = {Bullerschen, Klaus-Gerd and L{\´e}onard, G.}, title = {Hochtemperaturtechnik}, series = {Chemie Ingenieur Technik. 62 (1990), H. 3}, journal = {Chemie Ingenieur Technik. 62 (1990), H. 3}, isbn = {0009-286X}, pages = {252 -- 256}, year = {1990}, language = {de} } @article{BullerschenVoigtFriedrich1990, author = {Bullerschen, Klaus-Gerd and Voigt, H. and Friedrich, R.}, title = {Experimentelle und mathematische Untersuchungen zum Heißtransport von Stranggußbrammen}, series = {Stahl und Eisen. 110 (1990), H. 6}, journal = {Stahl und Eisen. 110 (1990), H. 6}, isbn = {0378-7559}, pages = {97 -- 105}, year = {1990}, language = {de} } @article{BullerschenWilhelmi1990, author = {Bullerschen, Klaus-Gerd and Wilhelmi, Herbert}, title = {K{\"u}hlung von Lichtbogenofenelektroden durch W{\"a}rmerohre}, series = {Stahl und Eisen. 110 (1990), H. 8}, journal = {Stahl und Eisen. 110 (1990), H. 8}, isbn = {0378-7559}, pages = {91 -- 98}, year = {1990}, language = {de} } @article{BullerschenWilhelmi1991, author = {Bullerschen, Klaus-Gerd and Wilhelmi, Herbert}, title = {Cooling of arc furnace electrodes with heat pipes}, series = {Chemical Engineering \& Technology. 14 (1991), H. 1}, journal = {Chemical Engineering \& Technology. 14 (1991), H. 1}, isbn = {0930-7516}, pages = {45 -- 53}, year = {1991}, language = {en} } @article{BullerschenWilhelmiWimmer1985, author = {Bullerschen, Klaus-Gerd and Wilhelmi, Herbert and Wimmer, W.}, title = {Influence of non-uniform material properties and water cooling on current density and temperature profiles in arc furnace elektrodes}, series = {Steel Research. 56 (1985), H. 11}, journal = {Steel Research. 56 (1985), H. 11}, isbn = {0177-4832}, pages = {559 -- 564}, year = {1985}, language = {en} } @masterthesis{Bunar2024, type = {Bachelor Thesis}, author = {Bunar, Moritz}, title = {Land Rover Symbiosis : Seegras erforschen und erleben}, publisher = {FH Aachen}, address = {Aachen}, pages = {149 Seiten}, year = {2024}, abstract = {Seegras wird als „Rohstoff der Zukunft" betitelt, da es helfen k{\"o}nnte, eine Reihe von globalen Problemen zu bek{\"a}mpfen. Viele der erhofften Innovationen sind heute aber noch hypothetisch. Außerdem ist das Thema in der westlichen Welt trotz der Neigung zum Klimaschutz kaum bekannt. Die Idee von „Land Rover Symbiosis" ist ein nachhaltiges Tourismuskonzept, das Forschung und Erlebnisreisen miteinander verkn{\"u}pft. Auf einer 70m Katamaran Superyacht ist Platz f{\"u}r Forschungszwecke auf der einen und Raum f{\"u}r Expeditionsurlaub auf der anderen Seite. So entsteht ein Verh{\"a}ltnis an Bord, bei dem beide Parteien voneinander profitieren: Wissenschaftler:innen erhalten finanzielle Unterst{\"u}tzung und Kund:innen haben ein klimaneutrales Urlaubserlebnis, bei dem sie hautnah die Vorz{\"u}ge und Potenziale von Seegras kennenlernen.}, language = {de} } @book{BundrockKremersPankoketal.2022, author = {Bundrock, Ronja and Kremers, Nico and Pankok, Lennard and Weisheit, Theresa Maria and Spoede, Jasper}, title = {Aachener Online-Schriften Wirtschaft und Recht. Band 5. 02/2022}, editor = {Kroll-Ludwigs, Kathrin and Bernecker, Andreas and Bassen-Metz, Yasmine and Eggert, Mathias and Fritz, Thomas and Golland, Alexander and H{\"o}hne, Tim and Tran, Duc Hung and Vogt, J{\"u}rgen}, publisher = {FH Aachen / Fachbereich Wirtschaftswissenschaften}, address = {Aachen}, publisher = {Fachhochschule Aachen}, pages = {356 Seiten}, year = {2022}, abstract = {Inhaltsverzeichnis - Bachelorarbeiten 1. Testamentsgestaltung bei Patchworkfamilien - L{\"o}sungsans{\"a}tze f{\"u}r typische Praxisprobleme unter Ber{\"u}cksichtigung der Interessenlagen der Parteien - Ronja Bundrock 4 - 58 2. Die Haftung des AG-Vorstands gegen{\"u}ber der Gesellschaft in unterneh- mensinternen und -externen Krisen - Nico Kremers 59 - 122 3. The Relationship of the Ex-Ante Uncertainty about the Value of a Stock and its IPO Underpricing - An Analysis of the German Market - Lennard Pankok 123 - 179 4. Attractiveness Bias in Venture Capital - An Analysis of Investor Decision Making in "Die H{\"o}hle der L{\"o}wen" - Theresa Maria Weisheit 180 - 242 Inhaltsverzeichnis - Masterarbeiten Erh{\"o}hung der Energieautarkie in der Backbranche - Anwendung von bidi- rektionalem Laden und dessen Auswirkungen auf die Gesch{\"a}ftsprozesse und Informationssysteme - Jasper Spoede 243 - 355}, language = {de} } @phdthesis{Bung2023, author = {Bung, Daniel Bernhard}, title = {Imaging techniques for investigation of free-surface flows in hydraulic laboratories}, doi = {10.25926/BUW/0-172}, pages = {XXIII, 218 Seiten}, year = {2023}, abstract = {This thesis aims at the presentation and discussion of well-accepted and new imaging techniques applied to different types of flow in common hydraulic engineering environments. All studies are conducted in laboratory conditions and focus on flow depth and velocity measurements. Investigated flows cover a wide range of complexity, e.g. propagation of waves, dam-break flows, slightly and fully aerated spillway flows as well as highly turbulent hydraulic jumps. Newimagingmethods are compared to different types of sensorswhich are frequently employed in contemporary laboratory studies. This classical instrumentation as well as the general concept of hydraulic modeling is introduced to give an overview on experimental methods. Flow depths are commonly measured by means of ultrasonic sensors, also known as acoustic displacement sensors. These sensors may provide accurate data with high sample rates in case of simple flow conditions, e.g. low-turbulent clear water flows. However, with increasing turbulence, higher uncertainty must be considered. Moreover, ultrasonic sensors can provide point data only, while the relatively large acoustic beam footprint may lead to another source of uncertainty in case of relatively short, highly turbulent surface fluctuations (ripples) or free-surface air-water flows. Analysis of turbulent length and time scales of surface fluctuations from point measurements is also difficult. Imaging techniques with different dimensionality, however, may close this gap. It is shown in this thesis that edge detection methods (known from computer vision) may be used for two-dimensional free-surface extraction (i.e. from images taken through transparant sidewalls in laboratory flumes). Another opportunity in hydraulic laboratory studies comes with the application of stereo vision. Low-cost RGB-D sensors can be used to gather instantaneous, three-dimensional free-surface elevations, even in flows with very high complexity (e.g. aerated hydraulic jumps). It will be shown that the uncertainty of these methods is of similar order as for classical instruments. Particle Image Velocimetry (PIV) is a well-accepted and widespread imaging technique for velocity determination in laboratory conditions. In combination with high-speed cameras, PIV can give time-resolved velocity fields in 2D/3D or even as volumetric flow fields. PIV is based on a cross-correlation technique applied to small subimages of seeded flows. The minimum size of these subimages defines the maximum spatial resolution of resulting velocity fields. A derivative of PIV for aerated flows is also available, i.e. the so-called Bubble Image Velocimetry (BIV). This thesis emphasizes the capacities and limitations of both methods, using relatively simple setups with halogen and LED illuminations. It will be demonstrated that PIV/BIV images may also be processed by means of Optical Flow (OF) techniques. OF is another method originating from the computer vision discipline, based on the assumption of image brightness conservation within a sequence of images. The Horn-Schunck approach, which has been first employed to hydraulic engineering problems in the studies presented herein, yields dense velocity fields, i.e. pixelwise velocity data. As discussed hereinafter, the accuracy of OF competes well with PIV for clear-water flows and even improves results (compared to BIV) for aerated flow conditions. In order to independently benchmark the OF approach, synthetic images with defined turbulence intensitiy are used. Computer vision offers new opportunities that may help to improve the understanding of fluid mechanics and fluid-structure interactions in laboratory investigations. In prototype environments, it can be employed for obstacle detection (e.g. identification of potential fish migration corridors) and recognition (e.g. fish species for monitoring in a fishway) or surface reconstruction (e.g. inspection of hydraulic structures). It can thus be expected that applications to hydraulic engineering problems will develop rapidly in near future. Current methods have not been developed for fluids in motion. Systematic future developments are needed to improve the results in such difficult conditions.}, language = {en} } @article{Bung2024, author = {Bung, Daniel Bernhard}, title = {Kamerabasierte Fließtiefen- und Geschwindigkeitsmessungen}, series = {Wasserwirtschaft}, volume = {114}, journal = {Wasserwirtschaft}, number = {4}, publisher = {Springer Vieweg}, address = {Wiesbaden}, issn = {0043-0978}, pages = {47 -- 53}, year = {2024}, abstract = {In der wasserbaulichen Forschung werden neben klassischen Messinstrumenten zunehmend kamerabasierte Verfahren genutzt. Diese erlauben neben der Bestimmung von Fließgeschwindigkeiten auch die Detektion der freien Wasseroberfl{\"a}che oder zeitliche Vermessung von Kolken. Durch die hohen r{\"a}umlichen und zeitlichen Aufl{\"o}sungen, welche neueste Kamerasensoren liefern, k{\"o}nnen neue Erkenntnisse in turbulenten, komplexen Str{\"o}mungen gewonnen werden. Auch in der Praxis k{\"o}nnen diese Verfahren mit geringem Aufwand wichtige Daten liefern.}, language = {de} } @inproceedings{Bung2009, author = {Bung, Daniel Bernhard}, title = {Optimierung des potentiellen Sauerstoffeintrags auf Treppenschussrinnen mit gem{\"a}ßigter Neigung}, series = {9. JuWi-Treffen : Beitr{\"a}ge zum Treffen junger Wissenschaftlerinnen und junger Wissenschaftler deutschsprachiger Wasserbauinstitute}, booktitle = {9. JuWi-Treffen : Beitr{\"a}ge zum Treffen junger Wissenschaftlerinnen und junger Wissenschaftler deutschsprachiger Wasserbauinstitute}, editor = {Theobald, S.}, publisher = {Universit{\"a}t Kassel}, address = {Kassel}, pages = {73 -- 78}, year = {2009}, language = {de} } @article{Bung2011, author = {Bung, Daniel Bernhard}, title = {Fließcharakteristik und Sauerstoffeintrag bei selbstbel{\"u}fteten Gerinnestr{\"o}mungen auf Kaskaden mit gem{\"a}ßigter Neigung}, series = {{\"O}sterreichische Wasser- und Abfallwirtschaft}, volume = {Vol. 63}, journal = {{\"O}sterreichische Wasser- und Abfallwirtschaft}, number = {Iss. 3-4}, publisher = {Springer}, address = {Berlin}, issn = {1613-7566 (E-Journal); 0945-358X (Print)}, pages = {76 -- 81}, year = {2011}, language = {de} } @inproceedings{Bung2012, author = {Bung, Daniel Bernhard}, title = {Sensitivity of phase detection techniques in aerated chute flows to hydraulic design parameters}, series = {2nd European IAHR congress : 27. - 29. June 2012, M{\"u}nchen}, booktitle = {2nd European IAHR congress : 27. - 29. June 2012, M{\"u}nchen}, publisher = {Lehrstuhl u. Versuchsanst. f{\"u}r Wasserbau u. Wasserwirtschaft d. TU M{\"u}nchen}, address = {M{\"u}nchen}, organization = {International Association for Hydraulic Engineering and Research}, isbn = {978-3-943683-03-5}, pages = {Artikelkennnummer: B15}, year = {2012}, language = {en} } @article{Bung2013, author = {Bung, Daniel Bernhard}, title = {Non-intrusive detection of air-water surface roughness in self-aerated chute flows}, series = {Journal of hydraulic research}, volume = {Vol. 51}, journal = {Journal of hydraulic research}, number = {Iss. 3}, publisher = {Taylor \& Francis}, address = {London}, issn = {1814-2079 (E-Journal); 0022-1686 (Print)}, pages = {322 -- 329}, year = {2013}, language = {en} } @article{Bung2021, author = {Bung, Daniel Bernhard}, title = {Extreme flooding in Western Germany: some thoughts on hazards, return periods and risk}, series = {Hydrolink}, journal = {Hydrolink}, number = {4}, publisher = {International Association for Hydro-Environment Engineering and Research (IAHR)}, address = {Madrid}, pages = {108 -- 113}, year = {2021}, abstract = {The low-pressure system Bernd involved extreme rainfalls in the Western part of Germany in July 2021, resulting in major floods, severe damages and a tremendous number of casualties. Such extreme events are rare and full flood protection can never be ensured with reasonable financial means. But still, this event must be starting point to reconsider current design concepts. This article aims at sharing some thoughts on potential hazards, the selection of return periods and remaining risk with the focus on Germany.}, language = {en} }