@article{BrainGebserPuehreretal.2007, author = {Brain, Martin and Gebser, Martin and P{\"u}hrer, J{\"o}rg and Schaub, Torsten H. and Tompits, Hans and Woltran, Stefan}, title = {"That is illogical, Captain!" : the debugging support tool spock for answer-set programs ; system description}, year = {2007}, language = {en} } @article{Braun2007, author = {Braun, Jutta}, title = {"Very nice, the enemies are gone!" : coming to terms with GDR sports since 1989/90}, issn = {0172-6404}, year = {2007}, abstract = {Als die SED-Diktatur zusammenbrach, {\"u}bte der Glanz der ostdeutschen Medaillen nach wie vor eine große Anziehungskraft aus, vor allem auf westdeutsche Sportpolitiker. Der Sport war ein Spezialfall der deutschen Vereinigung, da hier der Westen vom Osten zu lernen hoffte. Bald jedoch wurden die dunklen Seiten des DDR-Sports offensichtlich: die Verstrickung mit dem Ministerium f{\"u}r Staatsicherheit ebenso wie das staatlich forcierte Zwangsdoping. Bis heute gehen die Meinungen {\"u}ber den DDR-Sport weit auseinander: w{\"a}hrend die Einen ihn als repressiv und unmenschlich verurteilen, wird er von den Anderen gleichzeitig als Organisationsvorbild f{\"u}r die Zukunft gehandelt.}, language = {en} } @article{BoechatWeithoffKruegeretal.2007, author = {Bo{\"e}chat, Iola G. and Weithoff, Guntram and Kr{\"u}ger, Angela and G{\"u}cker, Bj{\"o}rn and Adrian, Rita}, title = {A biochemical explanation for the success of the mixotrophy in the flagellate Ochromonas sp.}, issn = {0024-3590}, doi = {10.4319/lo.2007.52.4.1624}, year = {2007}, abstract = {We report the influence of different nutritional modes-autotrophy, mixotrophy, and heterotrophy-on the fatty acid and sterol composition of the freshwater flagellate Ochromonas sp. and discuss the ecological significance of our results with respect to the resource competition theory (rct). Polyunsaturated fatty acids (PUFAs) are the most efficient biochemical variable distinguishing between nutritional modes of Ochromonas sp. Decreasing concentrations of PUFAs were observed in the order autotrophs, mixotrophs, heterotrophs. In mixotrophs and heterotrophs, concentrations of saturated fatty acids were higher than those of monounsaturated fatty acids and PUFAs as a result of bacterivory. Stigmasterol was the main sterol in Ochromonas sp., regardless of nutritional mode. Mixotrophs showed higher growth rates than heterotrophs, which could not be explained by rct. Heterotrophs, in turn, exhibited higher growth rates than autotrophs, which were cultured under the same light conditions as mixotrophs. Mixotrophs can synthesize PUFAs, which are important for many physiological functions such as membrane permeability and growth. Thus, mixotrophy facilitated efficient growth as well as the ability to synthesize complex and essential biomolecules. These strong synergetic effects are due to the combination of biochemical benefits of heterotrophic and autotrophic metabolic pathways and cannot be predicted by rct.}, language = {en} } @phdthesis{ColpanZenginoglu2007, author = {Colpan Zenginoglu, Anil}, title = {A conformal approach to numerical calculations of asymptotically flat spacetimes}, address = {Potsdam}, pages = {101 S. : graph. Darst.}, year = {2007}, language = {en} } @article{DelgrandeSchaub2007, author = {Delgrande, James Patrick and Schaub, Torsten H.}, title = {A consistency-based framework for merging knowledge bases}, issn = {1570-8683}, year = {2007}, language = {en} } @article{FussmannWeithoffYoshida2007, author = {Fussmann, Gregor F. and Weithoff, Guntram and Yoshida, Takehito}, title = {A direct, experimental test of resource versus consumer dependence : reply}, issn = {0012-9658}, doi = {10.1890/06-1692}, year = {2007}, language = {en} } @article{DelgrandeSchaubTompits2007, author = {Delgrande, James Patrick and Schaub, Torsten H. and Tompits, Hans}, title = {A general framework for expressing preferences in causal reasoning and planning}, issn = {0955-792X}, doi = {10.1093/logcom/exm046}, year = {2007}, abstract = {We consider the problem of representing arbitrary preferences in causal reasoning and planning systems. In planning, a preference may be seen as a goal or constraint that is desirable, but not necessary, to satisfy. To begin, we define a very general query language for histories, or interleaved sequences of world states and actions. Based on this, we specify a second language in which preferences are defined. A single preference defines a binary relation on histories, indicating that one history is preferred to the other. From this, one can define global preference orderings on the set of histories, the maximal elements of which are the preferred histories. The approach is very general and flexible; thus it constitutes a base language in terms of which higher-level preferences may be defined. To this end, we investigate two fundamental types of preferences that we call choice and temporal preferences. We consider concrete strategies for these types of preferences and encode them in terms of our framework. We suggest how to express aggregates in the approach, allowing, e.g. the expression of a preference for histories with lowest total action costs. Last, our approach can be used to express other approaches and so serves as a common framework in which such approaches can be expressed and compared. We illustrate this by indicating how an approach due to Son and Pontelli can be encoded in our approach, as well as the language PDDL3.}, language = {en} } @phdthesis{Merlo2007, author = {Merlo, Claudia}, title = {A model of protein folding kinetics}, address = {Potsdam}, pages = {89 S. : graph. Darst.}, year = {2007}, language = {en} } @article{LeitenbergerPietsch2007, author = {Leitenberger, Wolfram and Pietsch, Ullrich}, title = {A monolithic Fresnel bimirror for hard X-rays and its application for coherence measurements}, issn = {0909-0495}, doi = {10.1107/S0909049507003846}, year = {2007}, abstract = {Experiments using a simple X-ray interferometer to measure the degree of spatial coherence of hard X-rays are reported. A monolithic Fresnel bimirror is used at small incidence angles to investigate synchrotron radiation in the energy interval 5-50 keV with monochromatic and white beam. The experimental setup was equivalent to a Young's double-slit experiment for hard X-rays with slit dimensions in the micrometre range. From the high-contrast interference pattern the degree of coherence was determined.}, language = {en} } @phdthesis{Eisinger2007, author = {Eisinger, Dirk}, title = {A new management model for developing small scale contingency plans of rabies}, address = {Potsdam}, pages = {115 S. : graph. Darst.}, year = {2007}, language = {en} }