@inproceedings{GoemmelKobNiendorfetal.2009, author = {G{\"o}mmel, Andreas and Kob, Malte and Niendorf, Thoralf and Butenweg, Christoph}, title = {An approach for numerical calculation of glottal flow during glottal closure}, series = {Proceedings / NAG/DAGA 2009, International Conference on Acoustics : Rotterdam, 23 - 26 March 2009 ; [including the 35th German Annual Conference on Acoustics (DAGA)] / [organisers: Acoustical Society of the Netherlands (NAG); German Acoustical Society (DEGA) ...]. Ed. by Marinus M. Boone}, booktitle = {Proceedings / NAG/DAGA 2009, International Conference on Acoustics : Rotterdam, 23 - 26 March 2009 ; [including the 35th German Annual Conference on Acoustics (DAGA)] / [organisers: Acoustical Society of the Netherlands (NAG); German Acoustical Society (DEGA) ...]. Ed. by Marinus M. Boone}, publisher = {DEGA}, address = {Berlin}, organization = {NAG DAGA <2009, Rotterdam>}, isbn = {978-3-9808659-6-8}, pages = {1722 -- 1725}, year = {2009}, language = {en} } @inproceedings{GroebelKowollikCrummenerletal.2009, author = {Groebel, Simone and Kowollik, Silvia and Crummenerl, Silvia and Sch{\"o}ning, Michael Josef}, title = {2. Graduiertentagung : 5. November 2009 / [Hrsg.: S. Groebel ; S. Kowollik ; S. Crummenerl ; M. J. Sch{\"o}ning]}, organization = {FH Aachen, University of Applied Sciences / Graduiertentagung <2, 2009>}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:a96-opus-3131}, year = {2009}, abstract = {Tagungsband der Graduiertentagung der FH Aachen, in dem Doktorandinnen und Doktoranden und ihre Forschungsbereiche vorgestellt werden}, subject = {Aachen / Fachhochschule Aachen ; Graduierter ; Promotionsstudium}, language = {de} } @inproceedings{GligorevicZierhutJostetal.2009, author = {Gligorevic, Snjezana and Zierhut, R. and Jost, T. and Wang, Wei}, title = {Airport channel measurements at 5.2GHz}, series = {3rd European Conference on Antennas and Propagation : (EuCAP) ; Berlin, Germany, 23 - 27 March 2009}, booktitle = {3rd European Conference on Antennas and Propagation : (EuCAP) ; Berlin, Germany, 23 - 27 March 2009}, organization = {European Conference on Antennas and Propagation <3, 2009, Berlin>}, isbn = {978-1-4244-4753-4 ; 978-3-00-024573-2}, pages = {877 -- 881}, year = {2009}, language = {en} } @inproceedings{GligorevicJostWalter2009, author = {Gligorevic, Snjezana and Jost, T. and Walter, M.}, title = {Scatterer based airport surface channel model}, series = {IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla.}, booktitle = {IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla.}, organization = {Institute of Electrical and Electronics Engineers}, isbn = {978-1-4244-4078-8}, pages = {4C2-1 -- 4C2-10}, year = {2009}, language = {en} } @inproceedings{GellertButenweg2009, author = {Gellert, Christoph and Butenweg, Christoph}, title = {Nichtlinearer Erdbebennachweis von Mauerwerksbauten}, series = {Erdbeben und Mauerwerk : 11. D-A-CH-Tagung 2009 ; [10./11. September 2009 in Z{\"u}rich] / SGEB, Swiss Society for Earthquake Engineering and Structural Dynamics; Schweizerischer Ingenieur- und Architektenverein, Fachgruppe f{\"u}r Br{\"u}ckenbau und Hochbau. [Hrsg. Dazio, Alessandro ...]}, booktitle = {Erdbeben und Mauerwerk : 11. D-A-CH-Tagung 2009 ; [10./11. September 2009 in Z{\"u}rich] / SGEB, Swiss Society for Earthquake Engineering and Structural Dynamics; Schweizerischer Ingenieur- und Architektenverein, Fachgruppe f{\"u}r Br{\"u}ckenbau und Hochbau. [Hrsg. Dazio, Alessandro ...]}, publisher = {SIA}, address = {Z{\"u}rich}, organization = {D-A-C-H Tagung <11, 2009, Z{\"u}rich>}, isbn = {978-3-03732-021-1}, pages = {125 -- 132}, year = {2009}, language = {de} } @inproceedings{GehlerOberBloebaumDachwald2009, author = {Gehler, M. and Ober-Bl{\"o}baum, S. and Dachwald, Bernd}, title = {Application of discrete mechanics and optimal control to spacecraft in non-keplerian motion around small solar system bodies}, series = {Procceedings of the 60th International Astronautical Congress}, booktitle = {Procceedings of the 60th International Astronautical Congress}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-161567908-9}, pages = {1360 -- 1371}, year = {2009}, abstract = {Prolonged operations close to small solar system bodies require a sophisticated control logic to minimize propellant mass and maximize operational efficiency. A control logic based on Discrete Mechanics and Optimal Control (DMOC) is proposed and applied to both conventionally propelled and solar sail spacecraft operating at an arbitrarily shaped asteroid in the class of Itokawa. As an example, stand-off inertial hovering is considered, recently identified as a challenging part of the Marco Polo mission. The approach is easily extended to stand-off orbits. We show that DMOC is applicable to spacecraft control at small objects, in particular with regard to the fact that the changes in gravity are exploited by the algorithm to optimally control the spacecraft position. Furthermore, we provide some remarks on promising developments.}, language = {en} } @inproceedings{GallAbelAhlbrinketal.2009, author = {Gall, J. and Abel, D. and Ahlbrink, N. and Andersson, J. and Diehl, M. and Pitz-Paal, R. and Schmitz, M. and Teixeira Boura, Cristiano Jos{\´e}}, title = {Optimized control of hot-gas cycle for solar thermal power plants}, series = {Proceedings of the 7th International Modelica Conference : Como, Italy, 20-22 September 2009 / Francesco Casella, ed.}, booktitle = {Proceedings of the 7th International Modelica Conference : Como, Italy, 20-22 September 2009 / Francesco Casella, ed.}, publisher = {The Modelica Association}, isbn = {978-91-7393-513-5}, pages = {490 -- 495}, year = {2009}, language = {en} } @inproceedings{FunkeEschRoosen2009, author = {Funke, Harald and Esch, Thomas and Roosen, Peter}, title = {Using motor gasoline for aircrafts - coping with growing bio-fuel-caused risks by understanding cause-effect relationship}, series = {Fuels 2009 : mineral oil based and alternative fuels ; 7th international colloquium ; January 14 - 15, 2009}, booktitle = {Fuels 2009 : mineral oil based and alternative fuels ; 7th international colloquium ; January 14 - 15, 2009}, editor = {Bartz, Wilfried J.}, publisher = {Technische Akademie Esslingen (TAE)}, address = {Ostfildern}, isbn = {978-3-924813-75-8}, pages = {237 -- 244}, year = {2009}, abstract = {The utilisation of vehicle-oriented gasoline in general aviation is very desirable for both ecological and economical reasons, as well as for general considerations of availability. As of today vehicle fuels may be used if the respective engine and cell are certified for such an operation. For older planes a supplementary technical certificate is provided for gasoline mixtures with less than 1 \% v/v ethanol only, though. Larger admixtures of ethanol may lead to sudden engine malfunction and should be considered as considerable security risks. Major problems are caused by the partially ethanol non-withstanding materials, a necessarily changed stochiometric adjustment of the engine for varying ethanol shares and the tendency for phase separation in the presence of absorbed water. The concepts of the flexible fuel vehicles are only partially applicable in the view of air security.}, language = {en} } @inproceedings{FuchsRitz2009, author = {Fuchs, Britta and Ritz, Thomas}, title = {Blended Shopping}, series = {Mobile und ubiquit{\"a}re Informationssysteme - Entwicklung, Implementierung und Anwendung : Proceedings zur 4. Konferenz Mobile und Ubiquit{\"a}re Informationssysteme (MMS 2009), 3. M{\"a}rz 2009 in M{\"u}nster, Germany. - (GI-Edition : Proceedings ; 146)}, booktitle = {Mobile und ubiquit{\"a}re Informationssysteme - Entwicklung, Implementierung und Anwendung : Proceedings zur 4. Konferenz Mobile und Ubiquit{\"a}re Informationssysteme (MMS 2009), 3. M{\"a}rz 2009 in M{\"u}nster, Germany. - (GI-Edition : Proceedings ; 146)}, editor = {Bick, Markus}, publisher = {Ges. f{\"u}r Informatik}, address = {Bonn}, isbn = {978-3-88579-240-6}, pages = {109 -- 122}, year = {2009}, language = {de} } @inproceedings{FredebeulKrein2009, author = {Fredebeul-Krein, Markus}, title = {Encouraging competition and investment into next generation access networks: The case of long term risk sharing contracts}, year = {2009}, abstract = {Working paper distributed at 2nd Annual Next Generation Telecommunications Conference 2009, 13th - 14th October 2009, Brussels 14 pages Abstract Governments all over Europe are in the process of adopting new broadband strategies. The objective is to create modern telecommunications networks based on powerful broadband infrastructures". In doing so, they aim for innovative and investment-friendly concepts. For instance, in a recently published consultation paper on the subject the German regulator BNetzA declared that it will take "greater account of … reducing risks, securing the investment and innovation power, providing planning certainty and transparency - in order to support and advance broadband rollout in Germany". It further states that when regulating wholesale rates it has to be ensured that "… adequate incentives for network rollout are provided on the one hand, while sustainable and fair competition is ensured on the other". Also an EC draft recommendation on regulated network access is about to set new standards for the regulation of next generation access networks. According to the recommendation the prices of new assets shall be based on costs plus a projectspecific risk premium to be included in the costs of capital for the investment risk incurred by the operator. This approach has been criticised from various sides. In particular it has been questioned whether such an approach is adequate to meet the objectives of encouraging both competition and investment into next generation access networks. Against this background, the concept of "long term risk sharing contracts" has been proposed recently as an approach which does not only incorporate the various additional risks involved in the deployment of NGA infrastructure, but has several other advantages. This paper will demonstrate that the concept allows for competition to evolve at both the retail and wholesale level on fair, objective, non-discriminatory and transparent terms and conditions. Moreover, it ensures the highest possible investment incentive in line with socially desirable outcome. The paper is organised as follows: The next section will briefly outline the importance of encouraging competition and investment in an NGA-environment. The third section will specify the design of long term risk sharing contracts in view of achieving these objectives. The fourth section will examine potential problems associated with the concept. In doing so a way of how to deal with them will be elaborated. The last section will look at arguments against long term risk sharing contracts. It will be shown that these arguments are not strong enough to build a case against introducing such contracts.}, subject = {Electronic Commerce}, language = {en} } @inproceedings{FissabreNiethammer2009, author = {Fissabre, Anke and Niethammer, Bernd}, title = {The Invention of Glazed Curtain Wall in 1903 - The Steiff Toy Factory}, series = {Proceedings of the Third International Congress of Construction History, TU Cottbus 20.-24. Mai 2009, Vol 2}, booktitle = {Proceedings of the Third International Congress of Construction History, TU Cottbus 20.-24. Mai 2009, Vol 2}, publisher = {Neunplus1}, address = {Berlin}, isbn = {978-3-936033-31-1}, pages = {595 -- 602}, year = {2009}, language = {en} } @inproceedings{FerreinPotgieterSteinbauer2009, author = {Ferrein, Alexander and Potgieter, Anet and Steinbauer, Gerald}, title = {Self-aware robots - What do we need from learning, deliberation, and reactive control?}, series = {HYCAS 2009 : International Workshop on Hybrid Control of Autonomous Systems : Integrating Learning, Deliberation and Reactive Control : Pasadena, Calif., 13 July 2009}, booktitle = {HYCAS 2009 : International Workshop on Hybrid Control of Autonomous Systems : Integrating Learning, Deliberation and Reactive Control : Pasadena, Calif., 13 July 2009}, publisher = {AAAI Pr.}, pages = {1 -- 5}, year = {2009}, language = {en} } @inproceedings{FellinKingKirschetal.2009, author = {Fellin, Wolfgang and King, Julian and Kirsch, Ansgar and Oberguggenberger, Michael}, title = {Uncertainty modelling and sensitivity analysis of tunnel face stability}, series = {Safety, reliability and risk of structures, infrastructures and engineering systems : proceedings of the tenth International Conference on Structural Safety and Reliability (ICOSSAR 2009), Osaka, Japan, 13-17 September 2009 / ed.: Hitoshi Furuta ...}, booktitle = {Safety, reliability and risk of structures, infrastructures and engineering systems : proceedings of the tenth International Conference on Structural Safety and Reliability (ICOSSAR 2009), Osaka, Japan, 13-17 September 2009 / ed.: Hitoshi Furuta ...}, publisher = {CRC Pr.}, address = {Boca Raton, Fla. [u.a.]}, organization = {International Conference on Structural Safety and Reliability <10, 2009, Osaka>}, isbn = {978-0-415-47557-0}, pages = {112 -- 114}, year = {2009}, language = {en} } @inproceedings{EppleBrandesGligorevicetal.2009, author = {Epple, U. and Brandes, Sinja and Gligorevic, Snjezana and Schnell, Michael}, title = {Receiver optimization for L-DACS1}, series = {IEEE/AIAA 28th Digital Avionics Systems Conference : 23-29 Oct. 2009 : Orlando, Fla.}, booktitle = {IEEE/AIAA 28th Digital Avionics Systems Conference : 23-29 Oct. 2009 : Orlando, Fla.}, organization = {Institute of Electrical and Electronics Engineers}, isbn = {978-1-4244-4078-8}, pages = {4B1-1 -- 4B1-12}, year = {2009}, language = {en} } @inproceedings{ElBashirDigel2009, author = {ElBashir, Rasha and Digel, Ilya}, title = {Effect of nitric oxide gas on hydrogels : [abstract]}, year = {2009}, abstract = {The results support our theory that the NO gas has an influence in increasing the translational diffusion of hydrogels and it accelerates the melting process of the gels.}, subject = {Stickstoffmonoxid}, language = {en} } @inproceedings{DigelDachwaldArtmannetal.2009, author = {Digel, Ilya and Dachwald, Bernd and Artmann, Gerhard and Linder, Peter and Funke, O.}, title = {A concept of a probe for particle analysis and life detection in icy environments}, year = {2009}, abstract = {A melting probe equipped with autofluorescence-based detection system combined with a light scattering unit, and, optionally, with a microarray chip would be ideally suited to probe icy environments like Europa's ice layer as well as the polar ice layers of Earth and Mars for recent and extinct live.}, subject = {Sonde}, language = {en} } @inproceedings{DachwaldWurm2009, author = {Dachwald, Bernd and Wurm, P.}, title = {Design concept and modeling of an advanced solar photon thruster}, series = {Advances in the Astronautical Sciences}, booktitle = {Advances in the Astronautical Sciences}, publisher = {American Astronautical Society}, address = {San Diego, Calif.}, isbn = {978-087703554-1}, issn = {00653438}, pages = {723 -- 740}, year = {2009}, abstract = {The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), holds the potential of providing significant performance advantages over the flat solar sail. Previous SPT design concepts, however, do not consider shadowing effects and multiple reflections of highly concentrated solar radiation that would inevitably destroy the gossamer sail film. In this paper, we propose a novel advanced SPT (ASPT) design concept that does not suffer from these oversimplifications. We present the equations that describe the thrust force acting on such a sail system and compare its performance with respect to the conventional flat solar sail.}, language = {en} } @inproceedings{DachwaldWurm2009, author = {Dachwald, Bernd and Wurm, P.}, title = {Mission analysis for an advanced solar photon thruster}, series = {60th International Astronautical Congress 2009, IAC 2009}, volume = {Vol. 8}, booktitle = {60th International Astronautical Congress 2009, IAC 2009}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-161567908-9}, pages = {6838 -- 6851}, year = {2009}, abstract = {The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), is a solar sail design concept, for which the two basic functions of the solar sail, namely light collection and thrust direction, are uncoupled. In this paper, we introduce a novel SPT concept, termed the Advanced Solar Photon Thruster (ASPT). This model does not suffer from the simplified assumptions that have been made for the analysis of compound solar sails in previous studies. We present the equations that describe the force, which acts on the ASPT. After a detailed design analysis, the performance of the ASPT with respect to the conventional flat solar sail (FSS) is investigated for three interplanetary mission scenarios: An Earth-Venus rendezvous, where the solar sail has to spiral towards the Sun, an Earth-Mars rendezvous, where the solar sail has to spiral away from the Sun, and an Earth-NEA rendezvous (to near-Earth asteroid 1996FG3), where a large orbital eccentricity change is required. The investigated solar sails have realistic near-term characteristic accelerations between 0.1 and 0.2mm/s2. Our results show that a SPT is not superior to the flat solar sail unless very idealistic assumptions are made.}, language = {en} } @inproceedings{CzarneckiHeuserSpiliopoulou2009, author = {Czarnecki, Christian and Heuser, Marcus and Spiliopoulou, Myra}, title = {How does the implementation of a next generation network influence a telecommunication company?}, series = {European and Mediterranean Conference on Information Systems}, booktitle = {European and Mediterranean Conference on Information Systems}, editor = {Irani, Zahir}, publisher = {Brunel University}, address = {London}, isbn = {9781902316697}, pages = {1 -- 11}, year = {2009}, abstract = {As the potential of a Next Generation Network (NGN) is recognized, telecommunication companies consider switching to it. Although the implementation of an NGN seems to be merely a modification of the network infrastructure, it may trigger or require changes in the whole company and even influence the company strategy. To capture the effects of NGN we propose a framework based on concepts of business engineering and technical recommendations for the introduction of NGN technology. The specific design of solutions for the layers "Strategy", "Processes" and "Information Systems" as well as their interdependencies are an essential characteristic of the developed framework. We have per-formed a case study on NGN implementation and observed that all layers captured by our framework are influenced by the introduction of an NGN.}, language = {en} } @inproceedings{ChudobaKonradSchleseretal.2009, author = {Chudoba, Rostislav and Konrad, Martin and Schleser, Markus and Meskouris, Konstantin and Reisgen, Uwe}, title = {Parametric study of tensile response of TRC specimens reinforced with epoxy-penetrated multi-filament yarns}, series = {Textilbeton - Theorie und Praxis : Tagungsband zum 4. Kolloquium zu textilbewehrten Tragwerken (CTRS4) und zur 1. Anwendertagung, Dresden, 3.6.2009 - 5.6.2009}, booktitle = {Textilbeton - Theorie und Praxis : Tagungsband zum 4. Kolloquium zu textilbewehrten Tragwerken (CTRS4) und zur 1. Anwendertagung, Dresden, 3.6.2009 - 5.6.2009}, editor = {Curbach, Manfred}, publisher = {Techn. Univ.}, address = {Dresden}, isbn = {978-3-86780-122-5}, pages = {87 -- 98}, year = {2009}, language = {en} }