@article{DeneckePibaljommee2005, author = {Denecke, Klaus-Dieter and Pibaljommee, Bundit}, title = {Clones of implicit operations}, issn = {0002-5240}, year = {2005}, abstract = {There is a close connection between a variety and its clone. The clone of a variety is a multibased algebra, where the different universes are the sets of n-ary terms over this variety for every natural number n and where the operations describe the superposition of terms of different arities. All projections are added as nullary operations. Subvarieties correspond to homomorphic images of clones. Subclones can be described by reducts of varieties, isomorphic clones by equivalent varieties. Clone identities correspond to hyperidentities and varieties of clones to hypervarieties. Pseudovarieties are classes of finite algebras which are closed under taking of subalgebras, homomorphic images and finite direct products. Pseudovarieties are important in the theories of finite state automata, rational languages, finite semigroups and their connections. In a very natural way, there arises the question for the clone of a pseudovariety. In the present paper, we will describe this algebraic structure}, language = {en} } @article{DeneckeRadeleckiRatanaprasert2005, author = {Denecke, Klaus-Dieter and Radelecki, S. and Ratanaprasert, C.}, title = {On constantive simple and order-primal algebras}, year = {2005}, abstract = {A finite algebra A = (A; F-A) is said to be order-primal if its clone of all term operations is the set of all operations defined on A which preserve a given partial order <= on A. In this paper we study algebraic properties of order-primal algebras for connected ordered sets (A; <=). Such order-primal algebras are constantive, simple and have no non-identical automorphisms. We show that in this case F-A cannot have only unary fundamental operations or only one at least binary fundamental operation. We prove several properties of the varieties and the quasi-varieties generated by constantive and simple algebras and apply these properties to order-primal algebras. Further, we use the properties of order-primal algebras to formulate new primality criteria for finite algebras}, language = {en} } @article{ChangphasDenecke2005, author = {Changphas, Thawhat and Denecke, Klaus-Dieter}, title = {Green's relation R on the monoid of clone endomorphisms}, issn = {1005-3867}, year = {2005}, abstract = {A hypersubstitution is a map which takes n-ary operation symbols to n-ary terms. Any such map can be uniquely extended to a map defined on the set W-tau(X) of all terms of type tau, and any two such extensions can be composed in a natural way. Thus, the set Hyp(tau) of all hypersubstitutions of type tau forms a monoid. In this paper, we characterize Green's relation R on the monoid Hyp(tau) for the type tau = (n, n). In this case, the monoid of all hypersubstitutions is isomorphic with the monoid of all Clone endomorphisms. The results can be applied to mutually derived varieties}, language = {en} } @article{KumkeEidnerKrueger2005, author = {Kumke, Michael Uwe and Eidner, Sascha and Kr{\"u}ger, Tobias}, title = {Fluorescence quenching and luminescence sensitization in complexes of Tb3+ and Eu3+ with humic substances}, year = {2005}, abstract = {Intrinsic fluorescence quenching of humic substances (HS) and the sensitization of Ln(3+) luminescence (Ln3+ Tb3+, Eu3+) in HS complexes were investigated. Both measurements yielded complementary information on the complexation of metals by HS. Large differences between fulvic acids(FA)and humic acids (HA) were found. From time-resolved luminescence measurements it is concluded that a combination of energy transfer and energy back transfer between HS and Ln(3+) is responsible for the observed luminescence decay characteristics. In the case of Eu3+, an additional participation of charge-transfer states is suggested. A new concept for the evaluation of the sensitized luminescence decays of Ln(3+) was adapted}, language = {en} } @misc{Kehr2005, author = {Kehr, Julia}, title = {Untersuchungen der Proteine in den Langstreckentransportsystemen h{\"o}herer Pflanzen}, address = {Potsdam}, pages = {45 Bl. ; graph. Darst.}, year = {2005}, language = {de} } @article{ChristensenSchulteLadbeckSanchezetal.2005, author = {Christensen, Lise Bech and Schulte-Ladbeck, R. E. and Sanchez, Sebastian F. and Becker, Thomas and Jahnke, Knud and Kelz, A. and Roth, Martin M. and Wisotzki, Lutz}, title = {Abundances and kinematics of a candidate sub-damped Lymana galaxy toward PHL 1226}, year = {2005}, abstract = {The spectrum of the quasar PHL 1226 is known to have a strong Mg II and sub-damped Lymanalpha (sub-DLA) absorption line system with N(H I) = (5 +/- 2) x 10(19) cm(-2) at z = 0.1602. Using integral field spectra from the Potsdam Multi Aperture Spectrophotometer (PMAS) we investigate a galaxy at an impact parameter of 6".4 which is most probably responsible for the absorption lines. A fainter galaxy at a similar redshift and a slightly larger distance from the QSO is known to exist, but we assume that the absorption is caused by the more nearby galaxy. From optical Balmer lines we estimate an intrinsic reddening consistent with 0, and a moderate star formation rate of 0.5 M-circle dot yr(-1) is inferred from the Ha luminosity. Using nebular emission line ratios we find a solar oxygen abundance 12 + log (O/H) = 8.7 +/- 0.1 and a solar nitrogen to oxygen abundance ratio log (N/O) = -1.0 +/- 0.2. This abundance is larger than those of all known sub-DLA systems derived from analyses of metal absorption lines in quasar spectra. On the other hand, the properties are compatible with the most metal rich galaxies responsible for strong Mg II absorption systems. These two categories can be reconciled if we assume an abundance gradient similar to local galaxies. Under that assumption we predict abundances 12 + log (O/H) = 7.1 and log (N/O) = -1.9 for the sub-DLA cloud, which is similar to high redshift DLA and sub-DLA systems. We find evidence for a rotational velocity of similar to200 km s(-1) over a length of similar to7 kpc. From the geometry and kinematics of the galaxy we estimate that the absorbing cloud does not belong to a rotating disk, but could originate in a rotating halo}, language = {en} } @article{Doerfler2005, author = {D{\"o}rfler, Thomas}, title = {Geographie und Dekonstruktion}, series = {Geographische Revue : Zeitschrift f{\"u}r Literatur und Diskussion}, volume = {7}, journal = {Geographische Revue : Zeitschrift f{\"u}r Literatur und Diskussion}, number = {1/2}, issn = {1438-3039}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-31098}, pages = {67 -- 85}, year = {2005}, abstract = {Inhalt: - Der Ort - Das Symptom - Der Jargon des Vermeintlichen, oder: vermeintliche Philosophie - Was ist: Dekonstruktion? - Zur Genese - Dekonstruktion und Geographie - Grenz-Philosophie - Die Welt als Text - Versuch {\"u}ber die Grenze, in geographischer Absicht}, language = {de} } @article{Schneider2005, author = {Schneider, Hans Julius}, title = {Speaking about the interior : a look at Gerhard Roth with Ludwig Wittgestein}, year = {2005}, language = {en} } @misc{RaederSchubarthReschEsseretal.2005, author = {R{\"a}der, Andy and Schubarth, Wilfried and Resch-Esser, Ursula and Kube, Christian and Strigin, Natalia and Finschow, Michael and Bode, Anja and P{\"u}schel, Almuth}, title = {Portal = Zukunftsinvestition: F{\"o}rderung des wissenschaftlichen Nachwuchses}, number = {07-09/2005}, organization = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit}, issn = {1618-6893}, doi = {10.25932/publishup-43990}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439906}, pages = {54}, year = {2005}, abstract = {Aus dem Inhalt: - Zukunftsinvestition: F{\"o}rderung des wissenschaftlichen Nachwuchses - Nobelpreistr{\"a}ger in Potsdam - Aktionen gegen Studiengeb{\"u}hren - Erdbebenanalyse in Minuten}, language = {de} } @misc{UllrichWinterSchruletal.2005, author = {Ullrich, Sylvia and Winter, Jean-Pierre and Schrul, Barbara and D{\"o}lling, Irene and Ludwig, Joachim and Schnabel, Patrick Roger}, title = {Portal = Karriere und Familie: Eine Gratwanderung}, number = {10-12/2005}, organization = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit}, issn = {1618-6893}, doi = {10.25932/publishup-43991}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439915}, pages = {47}, year = {2005}, abstract = {Aus dem Inhalt: - Karriere und Familie: Eine Gratwanderung - Studierende werfen kritischen Blick auf ihre Fakult{\"a}t - Wie E-Learning das Studium ver{\"a}ndert - Mit System Erde bei Exzellenzinitiative punkten}, language = {de} } @article{KronerWildeO'Brienetal.2005, author = {Kroner, Alfred and Wilde, S. A. and O'Brien, Patrick J. and Li, J. H. and Passchier, C. W. and Walte, N. P. and Liu, Dun Yi}, title = {Field relationships, geochemistry, zircon ages and evolution of a late Archaean to Palaeoproterozoic lower crustal section in the Hengshan Terrain of northern China}, issn = {1000-9515}, year = {2005}, abstract = {The Hengshan complex forms part of the central zone of the North China Craton and consists predominantly of ductilely-deformed late Archaean to Palaeoproterozoic high-grade, partly migmatitic, granitoid orthogneisses, intruded by mafic dykes of gabbroic composition. Many highly strained rocks were previously misinterpreted as supracrustal sequences and represent mylonitized granitoids and sheared dykes. Our single zircon dating documents magmatic granitoid emplacement ages between 2.52 Ga and 2.48 Ga, with rare occurrences of 2.7 Ga gneisses, possibly reflecting an older basement. A few granitic gneisses have emplacement ages between 2.35 and 2.1 Ga and show the same structural features as the older rocks, indicating that the main deformation occurred after similar to 2.1 Ga. Intrusion of gabbroic dykes occurred at similar to 1920 Ma, and all Hengshan rocks underwent granulite-facies metamorphism at 1.88-1.85 Ga, followed by retrogression, shearing and uplift. We interpret the Hengshan and adjacent Fuping granitoid gneisses as the lower, plutonic, part of a late Archaean to early Palaeoproterozoic Japan-type magmatic arc, with the upper, volcanic part represented by the nearby Wutai complex. Components of this arc may have evolved at a continental margin as indicated by the 2.7 Ga zircons. Major deformation and HP metamorphism occurred in the late Palaeoproterozoic during the Luliang orogeny when the Eastern and Western blocks of the North China Craton collided to form the Trans-North China orogen. Shear zones in the Hengshan are interpreted as major lower crustal discontinuities post-dating the peak of HP metamorphism, and we suggest that they formed during orogenic collapse and uplift of the Hengshan complex in the late Palaeoproterozoic (< 1.85 Ga)}, language = {en} } @article{O'BrienWalteLi2005, author = {O'Brien, Patrick J. and Walte, N. P and Li, J. H.}, title = {The petrology of two distinct granulite types in the Hengshan Mts, China, and tectonic implications}, issn = {1367-9120}, year = {2005}, abstract = {The Archean to Proterozoic Hengshan Complex (North China Craton), comprises tonalitic and granodioritic gneisses with subordinate mafic lenses, pegmatites and granites. Amphibolite facies assemblages predominate, although granulite-facies relics are widespread, and greenschist-facies retrogression occurs in km-wide shear zones. Mafic lenses, locally abundant, occur as strongly deformed amphibolite (hornblende + plagioclase) boudins or sheets. In contrast to previously published models we find two series of mafic rocks with distinctly different granulite-facies evolutions. In the north of the complex, relict high-pressure mafic granulites are garnet + clinopyroxene-bearing rocks with a secondary development of orthopyroxene around both garnet (kelyphites) and clinopyroxene (coronas). South of the newly defined central, E-W-trending, Zhujiafang shear zone, numerous mafic boudins and less-deformed dykes exhibit a macroscopically visible magmatic texture with coronitic growth of metamorphic garnet (full of quartz inclusions) between the magmatic plagioclase and pyroxene domains. Additional orthopyroxene (after magmatic augite) and sodic rims to magmatic plagioclase clearly indicate medium-pressure granulite-facies metamorphism. These findings suggest tectonic juxtaposition in this area of three different structural levels of the same Proterozoic-imprinted crust: high-pressure granulite grade in the northern Hengshan, medium-pressure granulite grade in the southern Hengshan and amphibolite- to greenschist-facies grade in the Wutaishan to the SE. (c) 2004 Elsevier Ltd. All rights reserved}, language = {en} } @article{KonradSchmolkeHandyBabistetal.2005, author = {Konrad-Schmolke, Matthias and Handy, Mark R. and Babist, Jochen and O'Brien, Patrick J.}, title = {Thermodynamic modelling of diffusion-controlled garnet growth}, issn = {0010-7999}, year = {2005}, abstract = {Numerical thermodynamic modelling of mineral composition and modes for specified pressure-temperature paths reveals the strong influence of fractional garnet crystallisation, as well as water fractionation, on garnet growth histories in high pressure rocks. Disequilibrium element incorporation in garnet due to the development of chemical inhomogeneities around porphyroblasts leads to pronounced episodic growth and may even cause growth interruptions. Discontinuous growth, together with pressure- and temperature-dependent changes in garnet chemistry, cause zonation patterns that are indicative of different degrees of disequilibrium element incorporation. Chemical inhomogeneities in the matrix surrounding garnet porphyroblasts strongly affect garnet growth and lead to compositional discontinuities and steep compositional gradients in the garnet zonation pattern. Further, intergranular diffusion-controlled calcium incorporation can lead to a characteristic rise in grossular and spessartine contents at lower metamorphic conditions. The observation that garnet zonation patterns diagnostic of large and small fractionation effects coexist within the same sample suggests that garnet growth is often controlled by small-scale variations in the bulk rock chemistry. Therefore, the spatial distribution of garnet grains and their zonation patterns, together with numerical growth models of garnet zonation patterns, yield information about the processes limiting garnet growth. These processes include intercrystalline element transport and dissolution of pre-existing grains. Discontinuities in garnet growth induced by limited element supply can mask traces of the thermobarometric history of the rock. Therefore, thermodynamic modelling that considers fractional disequilibrium crystallisation is required to interpret compositional garnet zonation in terms of a quantitative pressure and temperature path of the host rock}, language = {en} } @book{MarienfeldSogomonyanOcheretnijetal.2005, author = {Marienfeld, Daniel and Sogomonyan, Egor S. and Ocheretnij, V. and G{\"o}ssel, Michael}, title = {Self-checking Output-duplicated Booth-2 Multiplier}, series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik}, volume = {2005, 1}, journal = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik}, publisher = {Univ.}, address = {Potsdam}, issn = {0946-7580}, year = {2005}, language = {en} } @book{BoernerGoessel2005, author = {B{\"o}rner, Ferdinand and G{\"o}ssel, Michael}, title = {Grundlagen digitaler Systeme}, publisher = {Univ.-Verl.}, address = {Potsdam}, isbn = {978-3-937786-46-9}, pages = {95 S.}, year = {2005}, language = {de} } @misc{Zimmering2005, author = {Zimmering, Raina}, title = {Das mexikanische Milit{\"a}r : von der Revolutionsarmee zur Polizeikraft}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-48258}, year = {2005}, abstract = {The military in Mexico started out as a revolutionary army that secured the regime of the governmental party PRI. The article discusses the change of this army into a national and hemispheric police force under the influence of the USA. Today, the functions of the Mexican army are a mix of fighting against drugs, organized delinquency, terrorism and counterinsurgency and cooperating with US as well as other Latin American forces.}, language = {de} } @phdthesis{Raters2005, author = {Raters, Marie-Luise}, title = {Kunst, Wahrheit und Gef{\"u}hl : Schelling, Hegel und die {\"A}sthetik des angsels{\"a}chsichen Idealismus}, publisher = {Alber}, address = {Freiburg}, isbn = {3-495-48177-X}, pages = {618 S.}, year = {2005}, language = {de} } @article{Crome2005, author = {Crome, Erhard}, title = {Kann es ein europ{\"a}isches Sozialstaatsmodell geben?}, isbn = {3-932502-47- 7}, year = {2005}, language = {de} } @article{GroblerHartlGrobleretal.2005, author = {Grobler, J. P. and Hartl, G. B. and Grobler, N. and Kotze, A. and Botha, K. and Tiedemann, Ralph}, title = {The genetic status of an isolated black wildebeest (Connochaetes gnou) population from the Abe Bailey Nature Reserve, South Africa : Microsatellite data on a putative past hybridization with blue wildebeest (C-taurinus)}, issn = {1616-5047}, year = {2005}, abstract = {The present study aimed at assessing genetic purity of black wildebeest (Connochoetes gnou) at Abe Bailey Nature Reserve, Gauteng Province, South Africa, using a multitocus microsatellite approach. Five loci were studied in black and blue (C. taurinus) wildebeest, the latter being a closely related species and known to produce hybrids with the morphologically very similar black wildebeest. In fact, the entire national black wildebeest population of South Africa potentially contains a significant proportion of introgressed blue wildebeest genes. In our case, eight out of 39 alleles were unique to black and 22 to blue wildebeest, with nine alleles shared between pure populations of the two species in Line with their taxonomic proximity. A possible Limited past introgression of blue wildebeest genes into the Abe Bailey population, corresponding to documents on population history, was only supported by the presence of a single allele otherwise exclusively found in samples of four pure blue but not in samples of two pure black wildebeest control populations. However, an assignment test and coefficients of population divergence did not support an extended introgression of C. taurinus alleles into the C. gnou population under study. Average heterozygosity at Abe Bailey proved to be intermediate between black and blue wildebeest, the tatter species generally harbouring more genetic variation than the former owing to larger population sizes and the absence of population bottlenecks in historical times. The implications of our data are discussed with reference to the persistence of introgressed genes and the conservation of pure black wildebeest gene pools}, language = {en} } @article{Wels2005, author = {Wels, Volkhard}, title = {Zur Vorgeschichte des Begriffs der 'kreativen Phantasie'}, series = {Zeitschrift f{\"u}r {\"A}sthetik und allgemeine Kunstwissenschaft}, volume = {50}, journal = {Zeitschrift f{\"u}r {\"A}sthetik und allgemeine Kunstwissenschaft}, number = {2}, publisher = {Felix Meiner Verlag}, address = {Hamburg}, issn = {0044-2186}, pages = {199 -- 226}, year = {2005}, abstract = {Gegen die g{\"a}ngige Vorstellung von der ‚kreativen Phantasie' als dem sch{\"o}pferischen Verm{\"o}gen des Dichters argumentiert der Aufsatz, dass erst mit der Fr{\"u}hromantik die Phantasie zum kreativen Verm{\"o}gen erkl{\"a}rt wird, davor jedoch die Vernunft als kreatives Verm{\"o}gen galt. In der Fakult{\"a}tenpsychologie des Mittelalters und der Fr{\"u}hen Neuzeit wurde die imaginatio als ein rein passives Vorstellungsverm{\"o}gen der Vernunft nicht entgegengestellt, sondern ihr {\"u}bergeordnet, indem sich die Vernunft der Phantasie als bildgebendem Verfahren bediente. W{\"a}hrend das Ergebnis der Phantasie seit der Fr{\"u}hromantik als {\"a}sthetisches ‚Werk' im emphatischen Sinne gilt, war das Ergebnis der dichtenden Vernunft ein Argument im logischen Sinne, das Prozess der inventio gefunden worden war. Erst Anfang des 18. Jahrhunderts entwickelt sich dann der Begriff der ‚kreativen Phantasie' aus dem rhetorischen Konzept der Anschaulichkeit (evidentia).}, language = {de} }