@inproceedings{LoebSchartnerDachwaldetal.2007,
  author    = {Loeb, Horst Wolfgang and Schartner, Karl-Heinz and Dachwald, Bernd and Seboldt, Wolfgang},
  title     = {SEP-Sample return from a main belt asteroid},
  series = {30th International Electric Propulsion Conference},
  booktitle = {30th International Electric Propulsion Conference},
  pages     = {1 -- 11},
  year      = {2007},
  abstract  = {By DLR-contact, sample return missions to the large main-belt asteroid "19, Fortuna" have been studied. The mission scenario has been based on three ion thrusters of the RIT-22 model, which is presently under space qualification, and on solar arrays equipped with triple-junction GaAs solar cells. After having designed the spacecraft, the orbit-to-orbit trajectories for both, a one-way SEP mission with a chemical sample return and an all-SEP return mission, have been optimized using a combination of artificial neural networks with evolutionary algorithms. Additionally, body-to-body trajectories have been investigated within a launch period between 2012 and 2015. For orbit-to-orbit calculation, the launch masses of the hybrid mission and of the all-SEP mission resulted in 2.05 tons and 1.56 tons, respectively, including a scientific payload of 246 kg. For the related transfer durations 4.14 yrs and 4.62 yrs were obtained. Finally, a comparison between the mission scenarios based on SEP and on NEP have been carried out favouring clearly SEP.},
  language  = {en}
}
@inproceedings{DachwaldKahleWie2007,
  author    = {Dachwald, Bernd and Kahle, Ralph and Wie, Bong},
  title     = {Head-on impact deflection of NEAs: a case study for 99942 Apophis},
  series = {Planetary Defense Conference 2007},
  booktitle = {Planetary Defense Conference 2007},
  pages     = {1 -- 12},
  year      = {2007},
  abstract  = {Near-Earth asteroid (NEA) 99942 Apophis provides a typical example for the evolution of asteroid orbits that lead to Earth-impacts after a close Earth-encounter that results in a resonant return. Apophis will have a close Earth-encounter in 2029 with potential very close subsequent Earth-encounters (or even an impact) in 2036 or later, depending on whether it passes through one of several less than 1 km-sized gravitational keyholes during its 2029-encounter. A pre-2029 kinetic impact is a very favorable option to nudge the asteroid out of a keyhole. The highest impact velocity and thus deflection can be achieved from a trajectory that is retrograde to Apophis orbit. With a chemical or electric propulsion system, however, many gravity assists and thus a long time is required to achieve this. We show in this paper that the solar sail might be the better propulsion system for such a mission: a solar sail Kinetic Energy Impactor (KEI) spacecraft could impact Apophis from a retrograde trajectory with a very high relative velocity (75-80 km/s) during one of its perihelion passages. The spacecraft consists of a 160 m × 160 m, 168 kg solar sail assembly and a 150 kg impactor. Although conventional spacecraft can also achieve the required minimum deflection of 1 km for this approx. 320 m-sized object from a prograde trajectory, our solar sail KEI concept also allows the deflection of larger objects. For a launch in 2020, we also show that, even after Apophis has flown through one of the gravitational keyholes in 2029, the solar sail KEI concept is still feasible to prevent Apophis from impacting the Earth, but many KEIs would be required for consecutive impacts to increase the total Earth-miss distance to a safe value},
  language  = {en}
}
@article{WallerBraunHojdisetal.2007,
  author    = {Waller, Mark P. and Braun, Heiko and Hojdis, Nils and B{\"u}hl, Michael},
  title     = {Geometries of Second-Row Transition-Metal Complexes from Density-Functional Theory},
  series = {Journal of Chemical Theory and Computation},
  volume    = {3},
  journal   = {Journal of Chemical Theory and Computation},
  number    = {6},
  issn      = {1549-9626},
  doi       = {10.1021/ct700178y},
  pages     = {2234 -- 2242},
  year      = {2007},
  language  = {en}
}
@article{GoeddekeStrzodkaMohdYusofetal.2007,
  author    = {G{\"o}ddeke, Dominik and Strzodka, Robert and Mohd-Yusof, Jamaludin and McCormick, Patrick and Buijssen, Sven H.M. and Grajewski, Matthias and Turek, Stefan},
  title     = {Exploring weak scalability for FEM calculations on a GPU-enhanced cluster},
  series = {Parallel Computing},
  volume    = {33},
  journal   = {Parallel Computing},
  number    = {10-11},
  issn      = {0167-8191},
  doi       = {10.1016/j.parco.2007.09.002},
  pages     = {685 -- 699},
  year      = {2007},
  language  = {en}
}
@inproceedings{Matcha2007,
  author    = {Matcha, Heike},
  title     = {Parametric possibilities: designing with parametric modelling},
  series = {Predicting the Future [25th eCAADe Conference Proceedings]},
  booktitle = {Predicting the Future [25th eCAADe Conference Proceedings]},
  isbn      = {978-0-9541183-6-5},
  pages     = {849 -- 856},
  year      = {2007},
  language  = {en}
}
@phdthesis{Trzewik2007,
  author    = {Trzewik, J{\"u}rgen},
  title     = {Experimental analysis of biaxial mechanical tension in cell monolayers and cultured three-dimensional tissues: the celldrum technology},
  publisher = {Univerist{\"a}tsverlg Ilmenau},
  address   = {Ilmenau},
  year      = {2007},
  language  = {en}
}
@incollection{DrummLemckeOberle2007,
  author    = {Drumm, Christian and Lemcke, Jens and Oberle, Daniel},
  title     = {Business Process Management And Semantic Technologies},
  series = {The Semantic Web},
  booktitle = {The Semantic Web},
  publisher = {Springer},
  address   = {Boston, MA},
  isbn      = {978-0-387-48531-7},
  doi       = {10.1007/978-0-387-48531-7_10},
  pages     = {207 -- 239},
  year      = {2007},
  language  = {en}
}
@inproceedings{WeberMarkovicDrumm2007,
  author    = {Weber, Ingo and Markovic, Ivan and Drumm, Christian},
  title     = {A conceptual framework for composition in business process management},
  series = {Business Information Systems : 10th International Conference, BIS 2007, Poznan, Poland, April 25-27, 2007. Proceedings},
  booktitle = {Business Information Systems : 10th International Conference, BIS 2007, Poznan, Poland, April 25-27, 2007. Proceedings},
  publisher = {Springer},
  address   = {Berlin, Heidelberg},
  isbn      = {978-3-540-72035-5},
  doi       = {10.1007/978-3-540-72035-5_5},
  pages     = {54 -- 66},
  year      = {2007},
  language  = {en}
}
@inproceedings{DrummSchmittDoetal.2007,
  author    = {Drumm, Christian and Schmitt, Matthias and Do, Hong-Hai and Rahm, Erhard},
  title     = {Quickmig: automatic schema matching for data migration projects},
  series = {Proceedings of the 2007 ACM Conference on Information and Knowledge Management / CIKM'07, Lisboa, Portugal, Nov. 6 - 10, 2007},
  booktitle = {Proceedings of the 2007 ACM Conference on Information and Knowledge Management / CIKM'07, Lisboa, Portugal, Nov. 6 - 10, 2007},
  isbn      = {978-1-59593-803-9},
  doi       = {10.1145/1321440.1321458},
  pages     = {107 -- 116},
  year      = {2007},
  language  = {en}
}
@article{KrollLudwigs2007,
  author    = {Kroll-Ludwigs, Kathrin},
  title     = {The Reform of German Maintenance Law},
  series = {The International Survey of Family Law},
  journal   = {The International Survey of Family Law},
  pages     = {85 -- 100},
  year      = {2007},
  language  = {en}
}