TY - CHAP A1 - Dachwald, Bernd T1 - Solar sail performance requirements for missions to the outer solar system and beyond T2 - 55th International Astronautical Congress 2004 N2 - Solar sails enable missions to the outer solar system and beyond, although the solar radiation pressure decreases with the square of solar distance. For such missions, the solar sail may gain a large amount of energy by first making one or more close approaches to the sun. Within this paper, optimal trajectories for solar sail missions to the outer planets and into near interstellar space (200 AU) are presented. Thereby, it is shown that even near/medium-term solar sails with relatively moderate performance allow reasonable transfer times to the boundaries of the solar system. Y1 - 2004 U6 - http://dx.doi.org/10.2514/6.IAC-04-S.P.11 N1 - 55th International Astronautical Congress 2004 - Vancouver, Canada SP - 1 EP - 9 ER - TY - CHAP A1 - Digel, Ilya A1 - Demirci, Taylan A1 - Trzewik, Jürgen A1 - Linder, Peter A1 - Temiz Artmann, Aysegül T1 - Fibroblast response to mechanical stress: role of the adhesion substrate : [abstract] N2 - Mechanical stimulation of the cells resulted in evident changes in the cell morphology, protein composition and gene expression. Microscopically, additional formation of stress fibers accompanied by cell re-arrangements in a monolayer was observed. Also, significant activation of p53 gene was revealed as compared to control. Interestingly, the use of CellTech membrane coating induced cell death after mechanical stress had been applied. Such an effect was not detected when fibronectin had been used as an adhesion substrate. KW - Fibroblast KW - Mechanische Beanspruchung KW - celldrum technology Y1 - 2004 ER - TY - CHAP A1 - Dilthey, Ulrich A1 - Mund, F. A1 - Raupach, Michael A1 - Schleser, Markus A1 - Walk-Lauffer, Bernd T1 - Improvement of textile reinforced concrete by polymer additives T2 - ICPIC '04 : 11th International Congress on Polymers in Concrete : 2nd-4th June, 2004 at BAM, Berlin, Germany : proceedings / ed. by M. Maultzsch Y1 - 2004 SN - 3-00-013706-8 SP - 469 EP - 476 PB - BAM CY - Berlin ER - TY - CHAP A1 - Döring, Bernd A1 - Sedlacek, Gerhard T1 - Improvement of thermal comfort in light weight buildings made of steel with new concepts for slab systems T2 - 10th Nordic Steel Construction Conference, Copenhagen, Denmark 7-9. June 2004: NSCC 2004 : proceedings Y1 - 2004 SP - 35 EP - 44 PB - Danish Steel Inst. CY - Copenhagen ER - TY - CHAP A1 - Fabo, Sabine T1 - Audio-visual hybrids : between immersion and detachment N2 - Close interrelations between sound and image are not a mere phenomenon of today’s multimedia technology. The idea of the synthesis of different media lies at the core of the concept of the Gesamtkunstwerk in the second half of the 19th century and it can also be traced back to the synaesthesia debate at the beginning of the 20th century [...]. KW - Elektronische Kunst KW - Klangkunst KW - Hybride Kunst KW - Medienkunst KW - Hybrid Art KW - Sound Art KW - Audio-visual Art Y1 - 2004 ER - TY - CHAP A1 - Gligorevic, Snjezana A1 - Bott, Rainer A1 - Sorger, Ulrich ED - Fazel, Khaled T1 - Equalization for multi-carrier systems in time-varying channels T2 - Multi-carrier spread-spectrum for future generation wireless systems : fourth international workshop, Germany, September 17-19, 2003 Y1 - 2004 SN - 1402018371 SP - 251 EP - 258 ER - TY - CHAP A1 - Herrmann, Ulf A1 - Graeter, F. A1 - Nava, P. ED - Ramos, C. T1 - Performance of the SKAL-ET Collector Loop at KJC Operating Company T2 - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12 Y1 - 2004 SN - 968-6114-18-1 PB - Instituto de Investigaciones Electricas CY - [s.l.] ER - TY - CHAP A1 - Kalker, Ines A1 - Toll, B. A1 - Holler, Stefan A1 - Butenweg, Christoph A1 - Topping, B. H. V. A1 - Mota Soares, C. A. T1 - Capacity analysis of textile retrofitted unreinforced masonry T2 - Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping ... Y1 - 2004 SN - 0-948749-95-4 U6 - http://dx.doi.org/10.4203/ccp.79.194 SP - 431 EP - 432 PB - Civil-Comp Press CY - Stirling ER - TY - CHAP A1 - Kern, Alexander A1 - Heidler, Fridolin A1 - Seevers, M. A1 - Zischank, Wolfgang J. T1 - Magnetic Fields and Induced Voltages in case of a Direct Strike - Comparison of Results obtained from Measurements at a Scaled Building to those of IEC 62305-4 N2 - In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the similarity relations theory. The calculations are based on the approximate formulae given in IEC 62305-4 and have to be supplemented by a rough estimation of the additional shielding effect of a second reinforcement layer. The comparison shows, that the measured peak values of the magnetic field and its derivative are mostly lower than the calculated. The induced voltages are in good agreement. Hence, calculations of the induced voltages based on IEC 62305-4 are a good method for lightning protection studies of buildings, where the reinforcement is used as a grid-like electromagnetic shield. N2 - Auswirkungen eines direkten Blitzeinschlages auf ein Gebäude, Vergleich von experimentellen Ergebnissen und Berechnungen basierend auf einer Formel aus der IEC 62305-4 KW - Blitz KW - Direkter Blitzschlag KW - Elektromagnetischer Schutzschild KW - Magnetische Felder KW - Induzierte Spannungen KW - Kalkulation KW - Direct lightning strike KW - electromagnetic shield KW - magnetic fields KW - induced voltages KW - calculations Y1 - 2004 SN - 0304-3886 N1 - Journal of electrostatics: Beitr. auf S. 379 - 385. doi:10.1016/j.elstat.2006.09.004 ER - TY - CHAP A1 - Kirchhof, M. A1 - Kraft, Bodo T1 - UML-based modeling of architectural knowledge and design N2 - IASSE-2004 - 13th International Conference on Intelligent and Adaptive Systems and Software Engineering eds. W. Dosch, N. Debnath, pp. 245-250, ISCA, Cary, NC, 1-3 July 2004, Nice, France We introduce a UML-based model for conceptual design support in civil engineering. Therefore, we identify required extensions to standard UML. Class diagrams are used for elaborating building typespecific knowledge: Object diagrams, implicitly contained in the architect’s sketch, are validated against the defined knowledge. To enable the use of industrial, domain-specific tools, we provide an integrated conceptual design extension. The developed tool support is based on graph rewriting. With our approach architects are enabled to deal with semantic objects during early design phase, assisted by incremental consistency checks. KW - UML KW - UML KW - Unified Modeling Language KW - UML KW - Unified Modeling Language Y1 - 2004 ER -