@article{Laumann2006, author = {Laumann, J{\"o}rg}, title = {Wirtschaftliche Bemessung von Kranbahntr{\"a}gern unter Ber{\"u}cksichtigung {\"o}rtlicher Spannungen infolge Radlasteinleitung}, series = {Stahlbau. 75 (2006), H. 12}, journal = {Stahlbau. 75 (2006), H. 12}, isbn = {1437-1049}, pages = {1004 -- 1012}, year = {2006}, language = {de} } @article{WarerkarSchmitzGoettscheetal.2007, author = {Warerkar, Shashikant and Schmitz, Stefan and G{\"o}ttsche, Joachim and Hoffschmidt, Bernhard}, title = {Wirtschaftlich und flexibel : Luft-Sand-W{\"a}rme{\"u}bertrager f{\"u}r die Energiespeicherung bei Temperaturen bis 800 °C}, series = {Verfahrenstechnik. 41 (2007), H. 4}, journal = {Verfahrenstechnik. 41 (2007), H. 4}, isbn = {0175-5315}, pages = {72 -- 73}, year = {2007}, language = {de} } @article{Tran2011, author = {Tran, Duc Hung}, title = {Wirkungslosigkeit der Entsprechenserkl{\"a}rung gem. \S161 AktG}, series = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern}, volume = {66}, journal = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern}, publisher = {Beck}, address = {M{\"u}nchen}, issn = {0340-7918}, pages = {2025}, year = {2011}, abstract = {Das Ziel des Deutschen Corporate Governance Kodex (DCGK) besteht in der Verbesserung der Transparenz und Qualit{\"a}t der deutschen Corporate Governance, wobei die Sanktionierung der Nichteinhaltung des DCGK einzig durch etwaige Kapitalmarktreaktionen erfolgt. Folgende Befunde sprechen jedoch daf{\"u}r, dass durch die Abgabe der Entsprechenserkl{\"a}rung gem. \S 161 AktG die f{\"u}r das Enforcement des Kodex angenommene Selbstregulierung durch den Kapitalmarkt nicht stattfindet, und demnach Verbesserungsbedarf besteht}, language = {de} } @article{Wollert2007, author = {Wollert, J{\"o}rg}, title = {Wireless in industriellen Anwendungen}, series = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler ; Sonderh. Scout : Leitfaden f{\"u}r Elektronik-Entwickler}, journal = {Elektronik : Fachmedium f{\"u}r industrielle Anwender und Entwickler ; Sonderh. Scout : Leitfaden f{\"u}r Elektronik-Entwickler}, issn = {1863-3420}, pages = {40 -- 46}, year = {2007}, language = {de} } @article{HueningHeuermannWache2018, author = {H{\"u}ning, Felix and Heuermann, Holger and Wache, Franz-Josef}, title = {Wireless CAN without WLAN or Bluetooth}, series = {CAN Newsletter}, journal = {CAN Newsletter}, number = {December 2018}, pages = {44 -- 46}, year = {2018}, abstract = {In two developed concepts, dual-mode radio enables CAN participants to be integrated wirelessly into a CAN network. Constructed from a few components, a protocol-free, real-time transmission and thus transparent integration into CAN is provided.}, language = {en} } @article{HueningHeuermannWache2018, author = {H{\"u}ning, Felix and Heuermann, Holger and Wache, Franz-Josef}, title = {Wireless CAN}, series = {Etz: Elektrotechnik \& Automation}, volume = {139}, journal = {Etz: Elektrotechnik \& Automation}, number = {10}, publisher = {VDE-Verlag}, address = {Wuppertal}, issn = {0170-1711}, pages = {22 -- 26}, year = {2018}, abstract = {In modernen elektronischen und mechatronischen Systemen, z. B. im industriellen oder automobil Bereich, kommunizieren eingebettete Steuerger{\"a}te und Sensoren vielfach {\"u}ber Bussysteme wie CAN oder LIN. Die Kommunikation findet in der Regel drahtgebunden statt, so dass der Kabelbaum f{\"u}r die Kommunikation sehr groß werden kann. Daher ist es naheliegend, Leitungen und dazugeh{\"o}rige Stecker, z. B. f{\"u}r nicht-sicherheitskritische Komfortsysteme, einzusparen und diese durch gerichtete Funkstrecken f{\"u}r kurze Entfernungen zu ersetzen. Somit k{\"o}nnten Komponenten wie ECUs oder Sensoren kabel- und steckerlos in ein Bussystem integriert werden. Zudem ist eine einfache galvanische und mechanische Trennung zu erreichen. Funk{\"u}bertragung wird bei diesen Bussystemen derzeit nicht eingesetzt, da insbesondere die Echtzeitf{\"a}higkeit und die Robustheit der vorhandenen Funksysteme nicht den Anforderungen der Anwendungen entspricht. Zudem sind bestehende Funksysteme wie WLAN oder Bluetooth im Vergleich zur konventionellen Verkabelung teuer und es besteht hierbei die M{\"o}glichkeit, dass sie ausspioniert werden k{\"o}nnen und so sensible Daten entwendet werden k{\"o}nnen. In dieser Arbeit wird eine alternative Realisierung zu den bestehenden Funksystemen vorgestellt, die aus wenigen Komponenten aufzubauen ist. Es ist eine protokolllose, echtzeitf{\"a}hige {\"U}bertragung m{\"o}glich und somit die transparente Integration in ein Bussystem wie CAN.}, language = {de} } @article{Benkner1999, author = {Benkner, Thorsten}, title = {Wireless ATM - Broadband Mobile Radio Systems}, series = {Multiaccess, mobility and teletraffic for wireless communications. Workshop on Multiaccess, Mobility and Teletraffic for Wireless Communications <4, 1998, Washington, DC>}, journal = {Multiaccess, mobility and teletraffic for wireless communications. Workshop on Multiaccess, Mobility and Teletraffic for Wireless Communications <4, 1998, Washington, DC>}, publisher = {Kluwer}, address = {Boston [u.a.]}, pages = {155 -- 170}, year = {1999}, language = {en} } @article{BiselliNollWandrey1996, author = {Biselli, Manfred and Noll, T. and Wandrey, C.}, title = {Wirbelschichtreaktor und Biomasse-Monitor : ein leistungsf{\"a}higes Fermenationssystem f{\"u}r S{\"a}ugerzellen / Noll, T. ; Biselli, M. ; Wandrey, C.}, series = {Biospektrum. 2 (1996), H. 1}, journal = {Biospektrum. 2 (1996), H. 1}, isbn = {0947-0867}, pages = {65 -- 67}, year = {1996}, language = {de} } @article{SchaeferHoefkenSchuba2011, author = {Schaefer, Thomas and H{\"o}fken, Hans-Wilhelm and Schuba, Marko}, title = {Windows Phone 7 from a Digital Forensics' Perspective}, publisher = {Springer}, address = {Berlin}, year = {2011}, language = {en} } @article{Gerhardt1991, author = {Gerhardt, Hans Joachim}, title = {Windlastannahmen f{\"u}r große Industriehallen mit Flachdach}, series = {Die Bautechnik. 68 (1991), H. 3}, journal = {Die Bautechnik. 68 (1991), H. 3}, isbn = {0005-6820}, pages = {93 -- 97}, year = {1991}, language = {de} } @article{GerhardtEbert1991, author = {Gerhardt, Hans Joachim and Ebert, U.}, title = {Windklima und Immission. Vergleich von Messungen vor Ort und Modellmessungen im Windkanal}, series = {Staub, Reinhaltung der Luft. 51 (1991), H. 2}, journal = {Staub, Reinhaltung der Luft. 51 (1991), H. 2}, isbn = {0039-0771}, pages = {57 -- 62}, year = {1991}, language = {de} } @article{Grundmann1991, author = {Grundmann, Reinhard}, title = {Windger{\"a}usche auf gemeinsamen Nenner gebracht - Vorschlag f{\"u}r eine einheitliche Bezeichnung der Emissionskenngr{\"o}ßen von aerodynamischen Ger{\"a}uschquellen}, series = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 42 (1991), H. 1}, journal = {HLH - Zeitschrift f{\"u}r Heizung, L{\"u}ftung, Klimatechnik, Haustechnik. 42 (1991), H. 1}, isbn = {0017-9906}, pages = {54 -- 55}, year = {1991}, language = {de} } @article{GerhardtJanser1995, author = {Gerhardt, Hans Joachim and Janser, F.}, title = {Windbelastung bel{\"u}fteter Fassadensysteme}, series = {Der Bauingenieur. 70 (1995), H. 5}, journal = {Der Bauingenieur. 70 (1995), H. 5}, isbn = {0005-6650}, pages = {193 -- 201}, year = {1995}, language = {de} } @article{HoevelerBauknechtWolfetal.2020, author = {Hoeveler, B. and Bauknecht, Andr{\´e} and Wolf, C. Christian and Janser, Frank}, title = {Wind-Tunnel Study of a Wing-Embedded Lifting Fan Remaining Open in Cruise Flight}, series = {Journal of Aircraft}, volume = {57}, journal = {Journal of Aircraft}, number = {4}, publisher = {AIAA}, address = {Reston, Va.}, issn = {1533-3868}, doi = {10.2514/1.C035422}, year = {2020}, abstract = {It is investigated whether a nonrotating lifting fan remaining uncovered during cruise flight, as opposed to being covered by a shutter system, can be realized with limited additional drag and loss of lift during cruise flight. A wind-tunnel study of a wing-embedded lifting fan has been conducted at the Side Wind Test Facility G{\"o}ttingen of DLR, German Aerospace Center in G{\"o}ttingen using force, pressure, and stereoscopic particle image velocimetry techniques. The study showed that a step on the lower side of the wing in front of the lifting fan duct increases the lift-to-drag ratio of the whole model by up to 25\% for all positive angles of attack. Different sizes and inclinations of the step had limited influence on the surface pressure distribution. The data indicate that these parameters can be optimized to maximize the lift-to-drag ratio. A doubling of the curvature radius of the lifting fan duct inlet lip on the upper side of the wing affected the lift-to-drag ratio by less than 1\%. The lifting fan duct inlet curvature can therefore be optimized to maximize the vertical fan thrust of the rotating lifting fan during hovering without affecting the cruise flight performance with a nonrotating fan.}, language = {en} } @article{GoettenHavermannBraunetal.2020, author = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Marino, Matthew and Bil, Cees}, title = {Wind-tunnel and CFD investigations of UAV landing gears and turrets - Improvements in empirical drag estimation}, series = {Aerospace Science and Technology}, volume = {107}, journal = {Aerospace Science and Technology}, number = {Art. 106306}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1270-9638}, doi = {10.1016/j.ast.2020.106306}, year = {2020}, abstract = {This paper analyzes the drag characteristics of several landing gear and turret configurations that are representative of unmanned aircraft tricycle landing gears and sensor turrets. A variety of these components were constructed via 3D-printing and analyzed in a wind-tunnel measurement campaign. Both turrets and landing gears were attached to a modular fuselage that supported both isolated components and multiple components at a time. Selected cases were numerically investigated with a Reynolds-averaged Navier-Stokes approach that showed good accuracy when compared to wind-tunnel data. The drag of main gear struts could be significantly reduced via streamlining their cross-sectional shape and keeping load carrying capabilities similar. The attachment of wheels introduced interference effects that increased strut drag moderately but significantly increased wheel drag compared to isolated cases. Very similar behavior was identified for front landing gears. The drag of an electro-optical and infrared sensor turret was found to be much higher than compared to available data of a clean hemisphere-cylinder combination. This turret drag was merely influenced by geometrical features like sensor surfaces and the rotational mechanism. The new data of this study is used to develop simple drag estimation recommendations for main and front landing gear struts and wheels as well as sensor turrets. These recommendations take geometrical considerations and interference effects into account.}, language = {en} } @article{MelissNeskakisUsbecketal.1994, author = {Meliß, Michael and Neskakis, A. and Usbeck, S. and Wagner, L. and Wiediger, J{\"u}rgen}, title = {Wind-PV-Hybridsystem an der FH Aachen/J{\"u}lich}, series = {Energiewirtschaftliche Tagesfragen. Jg. 44 (1994), H. 9 (special)}, journal = {Energiewirtschaftliche Tagesfragen. Jg. 44 (1994), H. 9 (special)}, issn = {0720-6240}, pages = {34 -- 40}, year = {1994}, language = {de} } @article{Gerhardt2006, author = {Gerhardt, Hans Joachim}, title = {Wind- und Temperatureinfl{\"u}sse bei der Planung von Entrauchungseinrichtungen}, series = {VFDB-Zeitschrift : Forschung, Technik und Management im Brandschutz. 55 (2006), H. 3}, journal = {VFDB-Zeitschrift : Forschung, Technik und Management im Brandschutz. 55 (2006), H. 3}, isbn = {0042-1804}, pages = {115 -- 121}, year = {2006}, language = {de} } @article{JungMuellerStaat2018, author = {Jung, Alexander and M{\"u}ller, Wolfram and Staat, Manfred}, title = {Wind and fairness in ski jumping: A computer modelling analysis}, series = {Journal of Biomechanics}, journal = {Journal of Biomechanics}, number = {75}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0021-9290}, doi = {10.1016/j.jbiomech.2018.05.001}, pages = {147 -- 153}, year = {2018}, abstract = {Wind is closely associated with the discussion of fairness in ski jumping. To counter-act its influence on the jump length, the International Ski Federation (FIS) has introduced a wind compensation approach. We applied three differently accurate computer models of the flight phase with wind (M1, M2, and M3) to study the jump length effects of various wind scenarios. The previously used model M1 is accurate for wind blowing in direction of the flight path, but inaccuracies are to be expected for wind directions deviating from the tangent to the flight path. M2 considers the change of airflow direction, but it does not consider the associated change in the angle of attack of the skis which additionally modifies drag and lift area time functions. M3 predicts the length effect for all wind directions within the plane of the flight trajectory without any mathematical simplification. Prediction errors of M3 are determined only by the quality of the input data: wind velocity, drag and lift area functions, take-off velocity, and weight. For comparing the three models, drag and lift area functions of an optimized reference jump were used. Results obtained with M2, which is much easier to handle than M3, did not deviate noticeably when compared to predictions of the reference model M3. Therefore, we suggest to use M2 in future applications. A comparison of M2 predictions with the FIS wind compensation system showed substantial discrepancies, for instance: in the first flight phase, tailwind can increase jump length, and headwind can decrease it; this is opposite of what had been anticipated before and is not considered in the current wind compensation system in ski jumping.}, language = {en} } @article{Schuermann1976, author = {Sch{\"u}rmann, Wilhelm}, title = {Wilhelm Sch{\"u}rmann}, series = {Kunstforum International}, volume = {1976}, journal = {Kunstforum International}, number = {18}, publisher = {Kunstforum International}, address = {K{\"o}ln}, pages = {151 -- 156}, year = {1976}, abstract = {Geboren 1946, lebt und arbeitet in Aachen. Studium der Chemie an der Technischen Hochschule Aachen. Danach als freiberuflicher Photograph t{\"a}tig f{\"u}r verschiedene Tageszeitungen. Seit 1972 Lehrer f{\"u}r Photographie am Reiff Museum der TH-Aachen, Institut f{\"u}r Architektur. Seit 1973 Dozent f{\"u}r Photographie an der Volkshochschule Aachen. Ende 1973 Gr{\"u}ndung der Galerie Lichttropfen in Aachen. Organisator zahlreicher Ausstellungen historischer und zeitgen{\"o}ssischer Photographie im In- und Ausland.}, language = {de} } @article{Wollert1997, author = {Wollert, J{\"o}rg}, title = {Wieviel Echtzeit kann Windows?}, series = {IEE : elektrische Automatisierung und Antriebstechnik}, volume = {Jg. 42}, journal = {IEE : elektrische Automatisierung und Antriebstechnik}, number = {Nr. 9}, issn = {1434-2898}, pages = {30 -- 37}, year = {1997}, language = {de} }