TY - JOUR A1 - Blome, Hans-Joachim A1 - Mashhoon, B. T1 - Quasi-normal oscillations of a Schwarzschild black hole JF - Physics Letters A. 100 (1984), H. 5 Y1 - 1984 SN - 0375-9601 SP - 231 EP - 234 ER - TY - JOUR A1 - Christen, Marc A1 - Kowalski, Julia A1 - Bartelt, Perry T1 - RAMMS: Numerical simulation of dense snow avalanches in three-dimensional terrain JF - Cold Regions Science and Technology N2 - Numerical avalanche dynamics models have become an essential part of snow engineering. Coupled with field observations and historical records, they are especially helpful in understanding avalanche flow in complex terrain. However, their application poses several new challenges to avalanche engineers. A detailed understanding of the avalanche phenomena is required to construct hazard scenarios which involve the careful specification of initial conditions (release zone location and dimensions) and definition of appropriate friction parameters. The interpretation of simulation results requires an understanding of the numerical solution schemes and easy to use visualization tools. We discuss these problems by presenting the computer model RAMMS, which was specially designed by the SLF as a practical tool for avalanche engineers. RAMMS solves the depth-averaged equations governing avalanche flow with accurate second-order numerical solution schemes. The model allows the specification of multiple release zones in three-dimensional terrain. Snow cover entrainment is considered. Furthermore, two different flow rheologies can be applied: the standard Voellmy–Salm (VS) approach or a random kinetic energy (RKE) model, which accounts for the random motion and inelastic interaction between snow granules. We present the governing differential equations, highlight some of the input and output features of RAMMS and then apply the models with entrainment to simulate two well-documented avalanche events recorded at the Vallée de la Sionne test site. KW - RAMMS KW - snow KW - avalanche Y1 - 2010 U6 - https://doi.org/10.1016/j.coldregions.2010.04.005 SN - 1872-7441 VL - 63 IS - 1-2 SP - 1 EP - 14 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Götten, Falk A1 - Havermann, Marc A1 - Braun, Carsten A1 - Gomez, Francisco A1 - Bil, Cees T1 - RANS Simulation Validation of a Small Sensor Turret for UAVs JF - Journal of Aerospace Engineering N2 - Recent Unmanned Aerial Vehicle (UAV) design procedures rely on full aircraft steady-state Reynolds-Averaged-Navier-Stokes (RANS) analyses in early design stages. Small sensor turrets are included in such simulations, even though their aerodynamic properties show highly unsteady behavior. Very little is known about the effects of this approach on the simulation outcomes of small turrets. Therefore, the flow around a model turret at a Reynolds number of 47,400 is simulated with a steady-state RANS approach and compared to experimental data. Lift, drag, and surface pressure show good agreement with the experiment. The RANS model predicts the separation location too far downstream and shows a larger recirculation region aft of the body. Both characteristic arch and horseshoe vortex structures are visualized and qualitatively match the ones found by the experiment. The Reynolds number dependence of the drag coefficient follows the trend of a sphere within a distinct range. The outcomes indicate that a steady-state RANS model of a small sensor turret is able to give results that are useful for UAV engineering purposes but might not be suited for detailed insight into flow properties. Y1 - 2019 U6 - https://doi.org/10.1061/(ASCE)AS.1943-5525.0001055 SN - 1943-5525 VL - 32 IS - 5 PB - ASCE CY - New York ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Kramer, C. T1 - Rauch- und Wärmeabzug - physikalische Grundlagen und Anwendungen JF - vfdb-Zeitschrift. 41 (1992), H. 2 Y1 - 1992 SN - 0042-1804 SP - 49 EP - 54 ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Konrath, Bernd T1 - Rauchableitung in unterirdischen Verkehrsanlagen. Möglichkeiten und Hinweise zur Ausführung. JF - vfdb-Zeitschrift. 52 (2003), H. 2 Y1 - 2003 SN - 0042-1804 SP - 59 EP - 65 ER - TY - JOUR A1 - Gerhardt, Hans Joachim T1 - Rauchableitung und deren Effektivität in der 4. Elbtunnelröhre JF - tunnel - Internationale Fachzeitschrift für unterirdisches Bauen (2003) Y1 - 2003 SN - 0722-6241 SP - 19 EP - 28 ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Schmidt, G. A1 - Jung, G. T1 - Rauchversuch in einem Hochregallager JF - Bautechnik. 79 (2002), H. 6 Y1 - 2002 SN - 0932-8351 SP - 414 EP - 417 ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Jung, G. A1 - Schmidt, G. T1 - Rauchversuch in einem Hochregallager. Die aerodynamisch wirksame Öffnungsfläche für den Rauchabzug in Hochregallagern und ihr Einfluss auf die Löscharbeiten der Feuerwehr JF - vfdb-Zeitschrift. 51 (2002), H. 1 Y1 - 2002 SN - 0042-1804 SP - 21 EP - 25 ER - TY - JOUR A1 - Blome, Hans-Joachim T1 - Raumfahrt - zwischen Himmel und Erde JF - Technologien für das 21. Jahrhundert / [red. Leitung: Birgit Strackenbrock ...] Y1 - 2000 SN - 376537945X N1 - Buchbeitrag SP - 572 EP - 679 PB - Brockhaus CY - Leipzig [u.a.] ER - TY - JOUR A1 - Blome, Hans-Joachim T1 - Raumfahrt und Exploration des Kosmos JF - Mensch, Leben, Schwerkraft, Kosmos : Perspektiven biowissenschaftlicher Weltraumforschung in Deutschland ; Berichtsband einer Klausurtagung vom 20. - 22.10.2000 in Stuttgart-Hohenheim/Birkach / Hinrich Rahmann ... (Hrsg.). [Ausgerichtet von der Deutschen Gesellschaft für Luft- und Raumfahrt medizin] Y1 - 2001 SN - 3-935380-03-8 SP - 80 EP - 105 PB - Heimbach CY - Stuttgart ER - TY - JOUR A1 - Bullerschen, Klaus-Gerd T1 - Rechenmodelle zur Stromverdrängung in ein- und mehrphasigen elektrischen Leitungen komplexer Geometrie JF - Elektrowärme International, Edition B (Industrielle Elektrowärme). 48 (1990), H. 4 Y1 - 1990 SN - 0340-3521 SP - 199 EP - 210 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Mengali, Giovanni A1 - Quarta, Alessandro A. A1 - Circi, Christian T1 - Refined Solar Sail Force Model with Mission Application / Giovanni Mengali ; Alessandro A. Quarta , Christian Circi ; Bernd Dachwald JF - Journal of Guidance, Control, and Dynamics. 30 (2007), H. 2 Y1 - 2007 SN - 0162-3192 N1 - 2. ISBN: 0731-5090 SP - 512 EP - 520 ER - TY - JOUR A1 - Mertens, Josef T1 - Required technologies for supersonic aircraft JF - Fluid dynamics research on supersonic aircraft : this report is a compilation of the edited proceedings of the special course on "Fluid dynamic research on supersonic aircraft" held at the Karman Institute for Fluid Dynamics (VKI) in Rhode-Saint-Genese, Belgium, 25-29 May 1998 Y1 - 1998 SN - 92-837-1007-X N1 - (RTO educational notes ; 4) SP - 5.1 EP - 5.16 PB - Research and Technology Organization CY - Neuilly-sur-Seine ER - TY - JOUR A1 - Smith, Wayne A1 - Kotliar, Konstantin A1 - Lammertyn, Leandi A1 - Ramoshaba, Nthai E. A1 - Vilser, Walthard A1 - Huisman, Hugo W. A1 - Schutte, Aletta E. T1 - Retinal vessel caliber and caliber responses in true normotensive black and white adults: The African-PREDICT study JF - Microvascular Research N2 - Purpose Globally, a detrimental shift in cardiovascular disease risk factors and a higher mortality level are reported in some black populations. The retinal microvasculature provides early insight into the pathogenesis of systemic vascular diseases, but it is unclear whether retinal vessel calibers and acute retinal vessel functional responses differ between young healthy black and white adults. Methods We included 112 black and 143 white healthy normotensive adults (20–30 years). Retinal vessel calibers (central retinal artery and vein equivalent (CRAE and CRVE)) were calculated from retinal images and vessel caliber responses to flicker light induced provocation (FLIP) were determined. Additionally, ambulatory blood pressure (BP), anthropometry and blood samples were collected. Results The groups displayed similar 24 h BP profiles and anthropometry (all p > .24). Black participants demonstrated a smaller CRAE (158 ± 11 vs. 164 ± 11 MU, p < .001) compared to the white group, whereas CRVE was similar (p = .57). In response to FLIP, artery maximal dilation was greater in the black vs. white group (5.6 ± 2.1 vs. 3.3 ± 1.8%; p < .001). Conclusions Already at a young age, healthy black adults showed narrower retinal arteries relative to the white population. Follow-up studies are underway to show if this will be related to increased risk for hypertension development. The reason for the larger vessel dilation responses to FLIP in the black population is unclear and warrants further investigation. Y1 - 2020 U6 - https://doi.org/10.1016/j.mvr.2019.103937 SN - 0026-2862 VL - 128 IS - Article 103937 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Wittmann, Klaus A1 - Feuerbacher, B. A1 - Ulamec, S. A1 - Rosenbauer, H. (u.a.) T1 - Rosetta Lander - In Situ Characterisation of a Comet Nucleus JF - Acta Astronautica. 45 (1999), H. 4-9 Y1 - 1999 SN - 0094-5765 SP - 389 EP - 395 ER - TY - JOUR A1 - Wittmann, Klaus A1 - Ulamec, S. A1 - Feuerbacher, B. A1 - Rosenbauer, H. (u.a.) T1 - Rosetta Lander - In Situ Investigation of a Cometary Nucleus JF - Lunar and Planetary Science. 28 (1997) Y1 - 1997 SN - 0270-9511 N1 - Proceedings of the 28th Annual Lunar and Planetary Science Conference, March 17-21, 1997, Houston, Texas SP - 1461 EP - 1462 ER - TY - JOUR A1 - Gerhardt, Hans Joachim T1 - RWA-Einbau in Gebäudewänden JF - Brandschutz in öffentlichen und privaten Gebäuden (1999) Y1 - 1999 SP - 46 EP - 48 ER - TY - JOUR A1 - Lasai, Sven A1 - Kolm, Heiko A1 - Wahle, Michael A1 - Pohl, Reiner T1 - Schwingungsanalyse von Subsystemen mit Hilfe der Simulation JF - Automobiltechnische Zeitschrift - ATZ Y1 - 2000 SN - 0001-2785 VL - 102 IS - 4 SP - 266 EP - 270 ER - TY - JOUR A1 - Finger, Felix T1 - Senkrechtstarter: FH-Absolvent wird für Transportdrohne ausgezeichnet JF - campushunter: das etwas andere Karrieremagazin - Wintersemester 16/17 Y1 - 2016 SN - 2196-9426 IS - 17. Regionalausgabe Aachen SP - 116 EP - 117 PB - Campushunter Media CY - Heidelberg ER - TY - JOUR A1 - Bühler, Yves A1 - Christen, Marc A1 - Kowalski, Julia A1 - Bartelt, Perry T1 - Sensitivity of snow avalanche simulations to digital elevation model quality and resolution JF - Annals of Glaciology N2 - Digital elevation models (DEMs), represent the three-dimensional terrain and are the basic input for numerical snow avalanche dynamics simulations. DEMs can be acquired using topographic maps or remote-sensing technologies, such as photogrammetry or lidar. Depending on the acquisition technique, different spatial resolutions and qualities are achieved. However, there is a lack of studies that investigate the sensitivity of snow avalanche simulation algorithms to the quality and resolution of DEMs. Here, we perform calculations using the numerical avalance dynamics model RAMMS, varying the quality and spatial resolution of the underlying DEMs, while holding the simulation parameters constant. We study both channelized and open-terrain avalanche tracks with variable roughness. To quantify the variance of these simulations, we use well-documented large-scale avalanche events from Davos, Switzerland (winter 2007/08), and from our large-scale avalanche test site, Valĺee de la Sionne (winter 2005/06). We find that the DEM resolution and quality is critical for modeled flow paths, run-out distances, deposits, velocities and impact pressures. Although a spatial resolution of ~25 m is sufficient for large-scale avalanche modeling, the DEM datasets must be checked carefully for anomalies and artifacts before using them for dynamics calculations. KW - snow KW - avalanche Y1 - 2011 SN - 1727-5644 VL - 52 IS - 58 SP - 72 EP - 80 PB - Cambridge University Press CY - Cambridge ER - TY - JOUR A1 - Kowalski, Julia A1 - McElwaine, Jim N. T1 - Shallow two-component gravity-driven flows with vertical variation JF - Journal of Fluid Mechanics Y1 - 2013 SN - 0022-1120 VL - 714 SP - 434 EP - 462 PB - Cambridge Univ. Press CY - Cambridge ER - TY - JOUR A1 - Havermann, Marc A1 - Ende, H. A1 - Seiler, F. A1 - Schwenzer, M. T1 - Shock tunnel measurement of the interaction amplification factor for a hot gas side jet in a supersonic cross flow / Havermann, M. ; Ende, H. ; Seiler, F. ; Schwenzer, M. JF - Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang Y1 - 2005 SN - 978-3-540-22497-6 SP - 113 EP - 118 PB - Springer CY - Berlin ER - TY - JOUR A1 - Thoma, Andreas A1 - Ravi, Sridhar T1 - Significance of parallel computing on the performance of Digital Image Correlation algorithms in MATLAB N2 - Digital Image Correlation (DIC) is a powerful tool used to evaluate displacements and deformations in a non-intrusive manner. By comparing two images, one of the undeformed reference state of a specimen and another of the deformed target state, the relative displacement between those two states is determined. DIC is well known and often used for post-processing analysis of in-plane displacements and deformation of specimen. Increasing the analysis speed to enable real-time DIC analysis will be beneficial and extend the field of use of this technique. Here we tested several combinations of the most common DIC methods in combination with different parallelization approaches in MATLAB and evaluated their performance to determine whether real-time analysis is possible with these methods. To reflect improvements in computing technology different hardware settings were also analysed. We found that implementation problems can reduce the efficiency of a theoretically superior algorithm such that it becomes practically slower than a suboptimal algorithm. The Newton-Raphson algorithm in combination with a modified Particle Swarm algorithm in parallel image computation was found to be most effective. This is contrary to theory, suggesting that the inverse-compositional Gauss-Newton algorithm is superior. As expected, the Brute Force Search algorithm is the least effective method. We also found that the correct choice of parallelization tasks is crucial to achieve improvements in computing speed. A poorly chosen parallelisation approach with high parallel overhead leads to inferior performance. Finally, irrespective of the computing mode the correct choice of combinations of integerpixel and sub-pixel search algorithms is decisive for an efficient analysis. Using currently available hardware realtime analysis at high framerates remains an aspiration. Y1 - 2019 SP - 1 EP - 17 ER - TY - JOUR A1 - Wahle, Michael A1 - Weber, M. T1 - Simulationsmodell zur Darstellung der Eigenschaften von Fahrzeug-Stoßdämpfern bei beliebiger dynamischer Belastung, Simulationsmodell für Stoßdämpfer Y1 - 2002 N1 - Report: bmb+f. Bundesministerium für Bildung und Forschung, Forschungsberichte (2002) Seite 1-76 (76 Seiten, Bilder, 21 Quellen), Report-Nr. 17.036.99 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Wi, Bong T1 - Solar Sail Kinetic Energy Impactor Trajectory Optimization for an Asteroid-Deflection Mission JF - Journal of Spacecraft and Rockets. 44 (2007), H. 4 Y1 - 2007 SN - 0022-4650 N1 - 2. ISSN: 1533-6794 SP - 755 EP - 764 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang A1 - Lämmerzahl, W. T1 - Solar Sail Propulsion: An Enabling Technology for Fundamental Physics Missions JF - Lasers, Clocks and Drag Free Control : Exploration of Relativistic Gravity in Space / by Hansjörg Dittus ..., eds. - ( Astrophysics and Space Science Library ; 349) Y1 - 2008 SN - 978-3-540-34376-9 SP - 379 EP - 398 PB - Springer CY - Berlin [u.a.] ER - TY - JOUR A1 - Dachwald, Bernd A1 - Wie, Bong T1 - Solar Sail Trajectory Optimization for Intercepting, Impacting, and Deflecting Near-Earth Asteroids JF - AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17) Y1 - 2005 SN - 1-56347-765-3 N1 - American Institute of Aeronautics and Astronautics ; AIAA Guidance, Navigation, and Control Conference and Exhibit <2005, San Francisco, Calif.> ; AIAA paper number: AIAA-2006-6176 PB - American Institute of Aeronautics and Astronautics CY - Reston, Va. ER - TY - JOUR A1 - Dachwald, Bernd A1 - Ohndorf, A. A1 - Wie, Bong T1 - Solar Sail Trajectory Optimization for the Solar Polar Imager (SPI) Mission JF - AIAA Guidance, Navigation, and Control Conference & Exhibit - AIAA Atmospheric Flight Mechanics Conference & Exhibit - AIAA Modeling and Simulation Technologies Conference & Exhibit - AIAA/AAS Astrodynamics Specialist Conference & Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 ) Y1 - 2006 SN - 1-56347-802-1 N1 - American Institute of Aeronautics and Astronautics ; American Astronautical Society ; AIAA/AAS Astrodynamics Specialist Conference & Exhibit <2006, Keystone, Colo.> ; AIAA paper number: AIAA-2006-6177 PB - American Institute of Aeronautics and Astronautics CY - Reston, Va. ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar sailcraft of the first generation mission applications to near-earth asteroids Y1 - 2003 N1 - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-Q.5.06 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar sailcraft of the first generation technology development / Seboldt, Wolfgang ; Dachwald, Bernd Y1 - 2003 N1 - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-S.03 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Kahle, Ralph A1 - Wie, Bong T1 - Solar Sailing Kinetic Energy Impactor (KEI) Mission Design Tradeoffs for Impacting and Deflecting Asteroid 99942 Apophis JF - AIAA Guidance, Navigation, and Control Conference & Exhibit - AIAA Atmospheric Flight Mechanics Conference & Exhibit - AIAA Modeling and Simulation Technologies Conference & Exhibit - AIAA/AAS Astrodynamics Specialist Conference & Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 ) Y1 - 2006 SN - 1-56347-802-1 N1 - American Institute of Aeronautics and Astronautics ; American Astronautical Society ; AIAA/AAS Astrodynamics Specialist Conference & Exhibit <2006, Keystone, Colo.> ; AIAA paper number: AIAA-2006-6178 SP - 1 EP - 20 PB - American Institute of Aeronautics and Astronautics CY - Reston, Va. ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar Sails for Near- and Medium-Term Scientific Deep Space Missions / W. Sebolt ; B. Dachwald JF - In-space propulsion : edited book of proceedings of the 10-IWCP, the 10th International Workshop on Combustion and Propulsion held in Lerici, La Spezia, Italy, 21-25 September 2003 / [ed.: Luigi T. DeLuca] Y1 - 2005 N1 - Paper 31 ; International workshop on combustion and propulsion <10, 2003, Lerici> PB - SP Lab, Politecnico di Milano CY - Milano ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar Sails — Propellantless Propulsion for Near- and Medium-Term Deep-Space Missions / W. Seboldt ; B. Dachwald JF - Advanced Propulsion Systems and Technologies, Today to 2020 / Claudio Bruno (ed.) ... - (Progress in Astronautics and Aeronautics Series ; 223) Y1 - 2008 SN - 978-1-56347-929-8 N1 - ISBN 10: 1-56347-929-X ; American Institute of Aeronautics and Astronautics PB - AIAA CY - Reston, Va. ER - TY - JOUR A1 - Peloni, Alessandro A1 - Ceriotti, Matteo A1 - Dachwald, Bernd T1 - Solar-sail trajectory design for a multiple near-earth-asteroid rendezvous mission JF - Journal of Guidance, Control, and Dynamics N2 - The scientific interest for near-Earth asteroids as well as the interest in potentially hazardous asteroids from the perspective of planetary defense led the space community to focus on near-Earth asteroid mission studies. A multiple near-Earth asteroid rendezvous mission with close-up observations of several objects can help to improve the characterization of these asteroids. This work explores the design of a solar-sail spacecraft for such a mission, focusing on the search of possible sequences of encounters and the trajectory optimization. This is done in two sequential steps: a sequence search by means of a simplified trajectory model and a set of heuristic rules based on astrodynamics, and a subsequent optimization phase. A shape-based approach for solar sailing has been developed and is used for the first phase. The effectiveness of the proposed approach is demonstrated through a fully optimized multiple near-Earth asteroid rendezvous mission. The results show that it is possible to visit five near-Earth asteroids within 10 years with near-term solar-sail technology. Y1 - 2016 U6 - https://doi.org/10.2514/1.G000470 SN - 0731-5090 VL - 39 IS - 12 SP - 2712 EP - 2724 PB - AIAA CY - Reston, Va. ER - TY - JOUR A1 - Wittmann, Klaus A1 - Bewersdorff, A. A1 - Görler, G.P. A1 - Otto, G. T1 - Solidification of silver-germanium alloys in an amorphous matrix aboard the space station Mir JF - Acta Astronautica. 29 (1993), H. 7 Y1 - 1993 SN - 0094-5765 SP - 547 EP - 552 ER - TY - JOUR A1 - Grundmann, Jan Thimo A1 - Dachwald, Bernd A1 - Grimm, Christian D. A1 - Kahle, Ralph A1 - Koch, Aaron Dexter A1 - Krause, Christian A1 - Lange, Caroline A1 - Quantius, Dominik A1 - Ulamec, Stephan T1 - Spacecraft for Hypervelocity Impact Research – An Overview of Capabilities, Constraints and the Challenges of Getting There JF - Procedia Engineering Y1 - 2015 U6 - https://doi.org/10.1016/j.proeng.2015.04.021 SN - 1877-7058 N1 - Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS 2015) VL - Vol. 103 SP - 151 EP - 158 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Gazda, Quentin A1 - Maurischat, Andreas T1 - Special functions and Gauss-Thakur sums in higher rank and dimension Y1 - 2020 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - Blome, Hans-Joachim T1 - Sternstunden der Astronomie Extraterrestrische Grundlagenforschung JF - Kultur und Technik. 23 (1999), H. 1 Y1 - 1999 SN - 0344-5690 SP - 18 EP - 27 ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Rudolph, M. T1 - Steuerungsstrategien für Fensterbetätigungen von Hochhäusern. Natürliche Lüftung JF - HLH - Heizung, Lüftung, Klima, Haustechnik. 51 (2000), H. 9 Y1 - 2000 SN - 1436-5103 SP - 48 EP - 52 ER - TY - JOUR A1 - Matheis, Anton A1 - Röth, Thilo A1 - Wagner, Manfred T1 - Studentenprojekt "Capro" – eine virtuelle Sportwagenstudie "Vision 2015" N2 - Design- und Karosseriebaustudenten der FH Aachen entwickeln gemeinsam mit externen Fachleuten unter Einsatz virtueller Entwicklungswerkzeuge ein Konzept für einen Sportwagen KW - Karosseriebau KW - Sportwagen KW - Kraftfahrzeugbau KW - Studentenprojekt KW - Virtuelle Fahrzeugentwicklung KW - car body construction Y1 - 2005 ER - TY - JOUR A1 - Henn, Gudrun A1 - Polaczek, Christa T1 - Studienerfolg in den Ingenieurwissenschaften JF - Das Hochschulwesen : HSW ; Forum für Hochschulforschung, -praxis und -politik Y1 - 2007 SN - 0018-2974 VL - 55 IS - 5 SP - 144 EP - 147 ER - TY - JOUR A1 - Esch, Thomas A1 - Salber, Wolfgang A1 - Wolters, Peter A1 - Geiger, José A1 - Dilthey, Jochen T1 - Synergies of variable valve actuation and direct injection JF - Direct injection SI engine technology 2002 : [SAE 2002 world congress, Detroit, Michigan, USA, March 4 - 7, 2002]. Y1 - 2002 SN - 0-7680-0961-8 N1 - Konferenz-Einzelbericht SP - 45 EP - 53 PB - Society of Automotive Engineers CY - Warrendale, Pa ER - TY - JOUR A1 - Havermann, Marc T1 - Systematic Shock Tube Experiments on Vortex Ring Generation and Propagation / Havermann, M. ; Kainuma, M. ; Takayama, K. JF - Shock waves : proceedings of the 25th International Symposium on Shock Waves-ISSW25, July 17 - 22, 2005, Bangalore, India / ed.: G. Jagadeesh Y1 - 2006 SN - 978-81-7371571-6 N1 - International Symposium on Shock Waves ; 25 (Bangalore) : 2005.07.17-22 ISSW ; 25 (Bangalore) : 2005.07.17-22 PB - Universities Pr. CY - Hyderabad ER - TY - JOUR A1 - Maurischat, Andreas A1 - Perkins, Rudolph T1 - Taylor coefficients of Anderson generating functions and Drinfeld torsion extensions N2 - We generalize our work on Carlitz prime power torsion extension to torsion extensions of Drinfeld modules of arbitrary rank. As in the Carlitz case, we give a description of these extensions in terms of evaluations of Anderson generating functions and their hyperderivatives at roots of unity. We also give a direct proof that the image of the Galois representation attached to the p-adic Tate module lies in the p-adic points of the motivic Galois group. This is a generalization of the corresponding result of Chang and Papanikolas for the t-adic case. Y1 - 2020 U6 - https://doi.org/10.1142/S1793042122500099 IS - Vol. 18, No. 01 SP - 113 EP - 130 PB - World Scientific CY - Singapur ER - TY - JOUR A1 - Wittmann, Klaus A1 - Ulamec, S. A1 - Feuerbacher, B. A1 - Rosenbauer, H. T1 - Technical Challenge, Scientific Thrill: A Long Term Lander on an Active Comet JF - Lunar and Planetary Science. 26 (1995) Y1 - 1995 SN - 0270-9511 N1 - Proceedings of the 26th Lunar and Planetary Science Conference / org. by Lunar and Planetary Institute, Houston Texas SP - 1431 EP - 1432 ER - TY - JOUR A1 - Breitschuh, S. A1 - Graber, S. A1 - Hagemann, Hans-Jürgen A1 - Hemdt, A. vom A1 - Schmitz, Günter T1 - Telematiklabore mit LabVIEW in der Ingenieurausbildung JF - Virtuelle Instrumente in der Praxis : Messtechnik, Automatisierung ; Begleitband zum Kongress VIP 2003 / Rahman Jamal ; Hans Jaschinski (Hrsg.). Y1 - 2003 SN - 3-7785-2908-0 N1 - VIP <2003, München> SP - 458 EP - 464 PB - Hüthig CY - Heidelberg [u.a.] ER - TY - JOUR A1 - Wittmann, Klaus A1 - Fortezza, R. T1 - Telescience opportunities in the precursor flights JF - Space Technology - Industrial and Commercial Applications. 13 (1992), H. 2 Y1 - 1992 SN - 0892-9270 SP - 221 EP - 226 ER - TY - JOUR A1 - Seefeldt, Patric A1 - Dachwald, Bernd T1 - Temperature increase on folded solar sail membranes JF - Advances in Space Research Y1 - 2021 U6 - https://doi.org/10.1016/j.asr.2020.09.026 SN - 0273-1177 VL - 67 IS - 9 SP - 2688 EP - 2695 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Bohn, D. A1 - Funke, Harald A1 - Gier, J. T1 - Temperature jet development in a cross-over channel JF - Third European Conference on Turbomachinery - fluid dynamics and thermodynamics : : 2 - 5 March 1999, Royal National Hotel, London, UK / organized by the Energy Transfer and Thermofluid Mechanics Group of the Institution of Mechanical Engineers (IMechE); with support and sponsorship from European Commission / Vol. B. Y1 - 1999 N1 - C557/158/99 ; IMechE conference transactions 1999-1B SP - 671 EP - 680 PB - Professional Engineering Publ. CY - Bury St. Edmunds ER - TY - JOUR A1 - Bécret, P. A1 - Grossen, J. A1 - Trilla, J. A1 - Robinson, A. A1 - Bosschaerts, W. A1 - Funke, Harald A1 - Hendrick, P. T1 - Testing and numerical study of a 10 kW hydrogen micro combustor JF - International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau> ; PowerMEMS ; 7 Y1 - 2007 SP - 367 EP - 370 ER -