@article{BorkMiethTschochner2004,
  author    = {Bork, Hans-Rudolf and Mieth, Andreas and Tschochner, Bernd},
  title     = {Nothing but stones? : a review of the extent and technical efforts of prehistoric stone mulching on Rapa Nui},
  year      = {2004},
  language  = {en}
}
@article{WesselAssmusWeidermannetal.2004,
  author    = {Wessel, Niels and Aßmus, Joerg and Weidermann, Frank and Konvicka, Jan and Nestmann, S. and Neugebauer, R. and Schwarz, Udo and Kurths, J{\"u}rgen},
  title     = {Modeling thermal displacements in modular tool systems},
  year      = {2004},
  abstract  = {In the last decade, there has been an increasing interest in compensating thermally induced errors to improve the manufacturing accuracy of modular tool systems. These modular tool systems are interfaces between spindle and workpiece and consist of several complicatedly formed parts. Their thermal behavior is dominated by nonlinearities, delay and hysteresis effects even in tools with simpler geometry and it is difficult to describe it theoretically. Due to the dominant nonlinear nature of this behavior the so far used linear regression between the temperatures and the displacements is insufficient. Therefore, in this study we test the hypothesis whether we can reliably predict such thermal displacements via nonlinear temperature-displacement regression functions. These functions are estimated firstly from learning measurements using the alternating conditional expectation (ACE) algorithm and then tested on independent data sets. First, we analyze data that were generated by a finite element spindle model. We find that our approach is a powerful tool to describe the relation between temperatures and displacements for simulated data. Next, we analyze the temperature-displacement relationship in a silent real experimental setup, where the tool system is thermally forced. Again, the ACE-algorithm is powerful to estimate the deformation with high precision. The corresponding errors obtained by using the nonlinear regression approach are 10-fold lower in comparison to multiple linear regression analysis. Finally, we investigate the thermal behavior of a modular tool system in a working milling machine and get again promising results. The thermally induced errors can be estimated with 1-2\${mu m}\$ accuracy using this nonlinear regression analysis. Therefore, this approach seems to be very useful for the development of new modular tool systems.},
  language  = {en}
}
@article{VollmeyerRheinberg2004,
  author    = {Vollmeyer, Regina and Rheinberg, Falko},
  title     = {Influence de la motivation sur l{\"i}apprentissage d{\"i}un syst{\`e}me lin{\´e}aire},
  issn      = {1705-0065},
  year      = {2004},
  language  = {en}
}
@book{BartkeSiegmueller2004,
  author    = {Bartke, Susanne and Siegm{\"u}ller, Julia},
  title     = {Williams syndrome across languages},
  series = {Language acquisition and language disorders},
  volume    = {36},
  journal   = {Language acquisition and language disorders},
  publisher = {Benjamins},
  address   = {Amsterdam},
  isbn      = {1-588-11494-5},
  pages     = {XV, 383 S.},
  year      = {2004},
  language  = {en}
}
@article{Selting2004,
  author    = {Selting, Margret},
  title     = {The "upward staircase" intonation contour in the Berlin vernacular : an example in the analysis of regionalized intonation as an interactional resource},
  isbn      = {1-58811-570-4},
  year      = {2004},
  language  = {en}
}
@article{KamjunkeGaedkeTitteletal.2004,
  author    = {Kamjunke, Norbert and Gaedke, Ursula and Tittel, J{\"o}rg and Weithoff, Guntram and Bell, Elanor M.},
  title     = {Strong vertical differences in the plankton composition of an extremely acidic lake},
  year      = {2004},
  abstract  = {Vertical differences in food web structure were examined in an extremely acidic, iron-rich mining lake in Germany (Lake 111; pH 2.6, total Fe 150mg L-1) during the period of stratification. We tested whether or not the seasonal variation of the plankton composition is less pronounced than the differences observed over depth. The lake was strongly stratified in summer, and concentrations of dissolved organic carbon and inorganic carbon were consistently low in the epilimnion but high in the hypolimnion. Oxygen concentrations declined in the hypolimnion but were always above 2mg L-1. Light attenuation did not change over depth and time and was governed by dissolved ferric iron. The plankton consisted mainly of single-celled and filamentous bacteria, the two mixotrophic flagellates Chlamydomonas sp. and Ochromonas sp., the two rotifer species Elosa worallii and Cephalodella hoodi, and Heliozoa as top predators. We observed very few ciliates and rhizopods, and no heterotrophic flagellates, crustaceans or fish. Ochromonas sp., bacterial filaments, Elosa and Heliozoa dominated in the epilimnion whereas Chlamydomonas sp., single-celled bacteria and Cephalodella dominated in the hypolimnion. Single-celled bacteria were controlled by Ochromonas sp. whereas the lack of large consumers favoured a high proportion of bacterial filaments. The primarily phototrophic Chlamydomas sp. was limited by light and CO2 and may have been reduced due to grazing by Ochromonas sp. in the epilimnion. The distribution of the primarily phagotrophic Ochromonas sp. and of the animals seemed to be controlled by prey availability. Differences in the plankton composition were much higher between the epilimnion and hypolimnion than within a particular stratum over time. The food web in Lake 111 was extremely species-poor enabling no functional redundancy. This was attributed to the direct exclusion of species by the harsh environmental conditions and presumably enforced by competitive exclusion. The latter was promoted by the low diversity at the first trophic level which, in turn, was attributed to relatively stable growth conditions and the independence of resource availability (inorganic carbon and light) from algal density. Ecological theory suggests that low functional redundancy promotes low stability in ecosystem processes which was not supported by our data.},
  language  = {en}
}
@book{OPUS4-14786,
  title     = {Democracy, miniorities and human rihts education in Europe : workshop dpkumentation ; March 5 - 6, 2004, Humboldt University of Berlin ; teaching human rights in Europe ; VW-Tandem research project},
  series = {Studien zu Grund- und Menschenrechten / MenschenRechtsZentrum der Universit{\"a}t Potsdam},
  journal   = {Studien zu Grund- und Menschenrechten / MenschenRechtsZentrum der Universit{\"a}t Potsdam},
  editor    = {Mahler, Claudia},
  publisher = {Menschenrechtszentrum},
  address   = {Potsdam},
  issn      = {1435-9154},
  pages     = {89 S.},
  year      = {2004},
  language  = {en}
}
@article{CouperKuhlen2004,
  author    = {Couper-Kuhlen, Elizabeth},
  title     = {Prosody and sequence organization in English conversation},
  isbn      = {1-58811-570-4},
  year      = {2004},
  language  = {en}
}
@article{Tristram2004,
  author    = {Tristram, Hildegard L. C.},
  title     = {"Celtic Studies in Germany, 1980-1995"},
  year      = {2004},
  abstract  = {This article provides a survey of the research carried out by Celtic scholars in Germany during the 15 years between 1980 and 1995. It is based on the respective bibliography published in 'Studia Celtica Japonica' 9 (1997). The major research fields covered are IE Studies, Celtic philology, linguistics, literature, archaeology and cultural studies.},
  language  = {en}
}
@misc{Peitsch2004,
  author    = {Peitsch, Helmut},
  title     = {Sagara, E., Germany in the nineteenth century: history and literature; Oxford, Lang, 2001. Sagara E., A social history of Germany: 1648 - 1914; New Brunswick, Transaction Publ., 2003},
  year      = {2004},
  language  = {en}
}