@inproceedings{DachwaldXuFeldmannetal.2011,
  author    = {Dachwald, Bernd and Xu, Changsheng and Feldmann, Marco and Plescher, Engelbert and Digel, Ilya and Artmann, Gerhard},
  title     = {Development and testing of a subsurface probe for detection of life in deep ice : [abstract]},
  year      = {2011},
  abstract  = {We present the novel concept of a combined drilling and melting probe for subsurface ice research. This probe, named "IceMole", is currently developed, built, and tested at the FH Aachen University of Applied Sciences' Astronautical Laboratory. Here, we describe its first prototype design and report the results of its field tests on the Swiss Morteratsch glacier. Although the IceMole design is currently adapted to terrestrial glaciers and ice shields, it may later be modified for the subsurface in-situ investigation of extraterrestrial ice, e.g., on Mars, Europa, and Enceladus. If life exists on those bodies, it may be present in the ice (as life can also be found in the deep ice of Earth).},
  subject      = {Eisschicht},
  language  = {en}
}
@inproceedings{AchenbachGoettscheKaufholdetal.2011,
  author    = {Achenbach, Timm and G{\"o}ttsche, Joachim and Kaufhold, O. and Hoffschmidt, Bernhard},
  title     = {Development of an edge module for open volumetric receiver for the use of the radiation at the receiver boundary region},
  series = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  booktitle = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  address   = {Granada},
  pages     = {1 CD-ROM},
  year      = {2011},
  language  = {en}
}
@inproceedings{KirchhofKraft2011,
  author    = {Kirchhof, Michael and Kraft, Bodo},
  title     = {Dogmatisches „Entweder agil oder klassisch" im Projektmanagement hat ausgedient - die richtige Mischung macht's},
  series = {Projekt-Sternstunden : strahlende Erfolge durch Kompetenz},
  booktitle = {Projekt-Sternstunden : strahlende Erfolge durch Kompetenz},
  publisher = {GPM},
  address   = {N{\"u}rnberg},
  isbn      = {978-3-924841-60-7},
  pages     = {414 -- 425},
  year      = {2011},
  language  = {de}
}
@inproceedings{HirschAhlbrinkPitzPaaletal.2011,
  author    = {Hirsch, Tobias and Ahlbrink, Nils and Pitz-Paal, Robert and Teixeira Boura, Cristiano Jos{\´e} and Hoffschmidt, Bernhard and Gall, Jan and Abel, Dirk and Nolte, Vera and Wirsum, Manfred and Andersson, Joel and Diehl, Moritz},
  title     = {Dynamic simulation of a solar tower system with open volumetric receiver - a review on the ViCERP project},
  series = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  booktitle = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  address   = {Granada},
  pages     = {1 CD-ROM},
  year      = {2011},
  language  = {en}
}
@inproceedings{KirschMattle2011,
  author    = {Kirsch, Ansgar and Mattle, Bruno},
  title     = {Einflussfaktoren auf die Erddruckverteilung bei eingesch{\"u}tteten Tunneln},
  series = {Baustatik Baupraxis : BB / Fachtagung Baustatik Baupraxis. Lehrst{\"u}hle und Institute f{\"u}r Statik, TH Aachen, TU Berlin, U Bochum [u.a.]},
  booktitle = {Baustatik Baupraxis : BB / Fachtagung Baustatik Baupraxis. Lehrst{\"u}hle und Institute f{\"u}r Statik, TH Aachen, TU Berlin, U Bochum [u.a.]},
  pages     = {1 -- 8},
  year      = {2011},
  language  = {de}
}
@inproceedings{GroebelWernerJoerresetal.2011,
  author    = {Groebel, Simone and Werner, Frederik and J{\"o}rres, Niklas and Jansen, F. and Kasper, Katharina and Schiffels, Johannes and Sprenger, B. and Baumann, Marcus and Sch{\"o}ning, Michael Josef and Selmer, Thorsten},
  title     = {Entwicklung einer Sensor-{\"U}berwachung f{\"u}r Biogasanlagen auf Basis von Prozessdaten einer Parallelanlage},
  series = {10. Dresdner Sensor-Symposium : Dresden, 5. - 7. Dezember 2011 ; miniaturisierte analytische Verfahren, Hochtemperatur-Sensoren, Sensoren f{\"u}r Bioprozess- und Verfahrenstechnik, Sensoren f{\"u}r die Medizin, Chemische Verfahrenstechnik, Lebensmittelanalytik, innovative Sensorl{\"o}sungen, Sensoren f{\"u}r die Wasserqualit{\"a}t, Selbst{\"u}berwachung / Gerald Gerlach ... (Hg.)},
  booktitle = {10. Dresdner Sensor-Symposium : Dresden, 5. - 7. Dezember 2011 ; miniaturisierte analytische Verfahren, Hochtemperatur-Sensoren, Sensoren f{\"u}r Bioprozess- und Verfahrenstechnik, Sensoren f{\"u}r die Medizin, Chemische Verfahrenstechnik, Lebensmittelanalytik, innovative Sensorl{\"o}sungen, Sensoren f{\"u}r die Wasserqualit{\"a}t, Selbst{\"u}berwachung / Gerald Gerlach ... (Hg.)},
  publisher = {TUDpress},
  address   = {Dresden},
  isbn      = {978-3-942710-53-4},
  doi       = {10.5162/10dss2011/4.3},
  pages     = {81 -- 84},
  year      = {2011},
  abstract  = {Beim Ausbau nachhaltiger, regenerativer Energieversorgung hat die Umwandlung von organischer Biomasse in Biogas ein großes Potential. Der zugrundeliegende, komplexe biologische Prozess wird noch immer unzureichend verstanden und bedarf systematischer Untersuchungen der Prozessparameter, um einen hohen Ertrag bei guter Gasqualit{\"a}t zu erm{\"o}glichen. Die Fragestellungen zur Entschl{\"u}sselung des Prozesses sind sowohl verfahrenstechnischer als auch mikrobiologischer Natur. Aus mikrobiologischer Sicht ist die Kenntnis der tats{\"a}chlich beteiligten prozesstragenden Mikroorganismen von erheblicher Bedeutung, aus verfahrenstechnischer Sicht die Kenntnis der physikalischen und chemischen Faktoren, welche die mikrobiologischen Prozesse und kontrollieren. Im Zusammenspiel aller dieser Parameter wird die Biogasbildung bef{\"o}rdert oder behindert, bis zum Abbruch des Prozesses. Eine m{\"o}gliche Kontrollmethode ist die Messung der metabolischen Aktivit{\"a}t prozesstragender Organismen. Diese soll, beruhend auf fundierten Prozessdaten, gewonnen durch eine Parallelanlage, mit einem lichtadressierbaren potentiometrischen Sensor-System (LAPS) realisiert werden. Dieser Sensor ist in der Lage, pH-Wert-{\"a}nderungen zu detektieren, die durch den Stoffwechsel der auf dem Chip immobilisierten Organismen hervorgerufen werden, um eine Online-{\"U}berwachung von Biogasanlagen zu erm{\"o}glichen.},
  language  = {de}
}
@inproceedings{KerpenVerwornBungetal.2011,
  author    = {Kerpen, N. and Verworn, F. and Bung, Daniel B. and Daemrich, K.-F. and Schlurmann, Torsten},
  title     = {Ermittlung von Wellen{\"u}berlaufmengen an Sturmflutschutzw{\"a}nden auf Deichen},
  series = {Maritimer Wasserbau und K{\"u}steningenieurwesen : 8. FZK-Kolloquium : Hannover 10. M{\"a}rz, 2011},
  booktitle = {Maritimer Wasserbau und K{\"u}steningenieurwesen : 8. FZK-Kolloquium : Hannover 10. M{\"a}rz, 2011},
  organization    = {Forschungszentrum K{\"u}ste (FZK)},
  issn      = {1610-5249},
  pages     = {63 -- 68},
  year      = {2011},
  language  = {de}
}
@inproceedings{UsaiCorucciGligorevicetal.2011,
  author    = {Usai, Pierpaolo and Corucci, Alessandro and Gligorevic, Snjezana and Monorchio, Agostino},
  title     = {Estimation of airport surface propagation channel: ray tracing model and measurements},
  series = {Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP) : 11 - 15 April 2011, Rome, Italy},
  booktitle = {Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP) : 11 - 15 April 2011, Rome, Italy},
  organization    = {European Association on Antennas and Propagation},
  isbn      = {978-1-4577-0250-1},
  pages     = {1634 -- 1638},
  year      = {2011},
  language  = {en}
}
@inproceedings{TranNovacekTolbaetal.2011,
  author    = {Tran, Thanh Ngoc and Novacek, V. and Tolba, R. and Klinge, U. and Turquier, F. and Staat, Manfred},
  title     = {Experimental and Computational approach to study colorectal anastomosis. ISB2011, Proceedings of the XXIII Congress of the International Society of Biomechanics, Brussels, Belgium, July 3-7, 2011},
  year      = {2011},
  abstract  = {Summary: This paper presents a methodology to study and understand the mechanics of stapled anastomotic behaviors by combining empirical experimentation and finite element analysis. Performance of stapled anastomosis is studied in terms of leakage and numerical results which are compared to in vitro experiments performed on fresh porcine tissue. Results suggest that leaks occur between the tissue and staple legs penetrating through the tissue.},
  subject      = {Anastomose},
  language  = {en}
}
@inproceedings{OhndorfDachwaldSeboldtetal.2011,
  author    = {Ohndorf, Andreas and Dachwald, Bernd and Seboldt, Wolfgang and Schartner, Karl-Heinz},
  title     = {Flight times to the heliopause using a combination of solar and radioisotope electric propulsion},
  series = {32nd International Electric Propulsion Conference},
  booktitle = {32nd International Electric Propulsion Conference},
  pages     = {1 -- 12},
  year      = {2011},
  abstract  = {We investigate the interplanetary flight of a low-thrust space probe to the heliopause,located at a distance of about 200 AU from the Sun. Our goal was to reach this distance within the 25 years postulated by ESA for such a mission (which is less ambitious than the 15-year goal set by NASA). Contrary to solar sail concepts and combinations of allistic and electrically propelled flight legs, we have investigated whether the set flight time limit could also be kept with a combination of solar-electric propulsion and a second, RTG-powered upper stage. The used ion engine type was the RIT-22 for the first stage and the RIT-10 for the second stage. Trajectory optimization was carried out with the low-thrust optimization program InTrance, which implements the method of Evolutionary Neurocontrol,using Artificial Neural Networks for spacecraft steering and Evolutionary Algorithms to optimize the Neural Networks' parameter set. Based on a parameter space study, in which the number of thrust units, the unit's specific impulse, and the relative size of the solar power generator were varied, we have chosen one configuration as reference. The transfer time of this reference configuration was 29.6 years and the fastest one, which is technically more challenging, still required 28.3 years. As all flight times of this parameter study were longer than 25 years, we further shortened the transfer time by applying a launcher-provided hyperbolic excess energy up to 49 km2/s2. The resulting minimal flight time for the reference configuration was then 27.8 years. The following, more precise optimization to a launch with the European Ariane 5 ECA rocket reduced the transfer time to 27.5 years. This is the fastest mission design of our study that is flexible enough to allow a launch every year. The inclusion of a fly-by at Jupiter finally resulted in a flight time of 23.8 years,which is below the set transfer-time limit. However, compared to the 27.5-year transfer,this mission design has a significantly reduced launch window and mission flexibility if the escape direction is restricted to the heliosphere's "nose".},
  language  = {en}
}