Hermann Kaulbach Bilderbuch. Mit 45 Bildern von Hermann Kaulbach und einem Porträt des Künstlers.

Illus. on p.[68] dated: 1906.

Zentralblatt für Zoologie, Allgemeine und Experimentelle Biologie

Formed by the Union of the Zoologisches Zentralblatt and the Zentralblatt Für Allgemeine und Experimentelle Biologie

Der Widerspruch zwischen nationalen Berufsbildungssystemen und dem europäischen Arbeitsmarkt: der Fall der Maurerqualifikationen

This paper draws on research into bricklaying qualifications in eight countries to show how equivalence might be established between qualitative differences in occupational qualifications so facilitating the implementation of a European Qualifications Framework (EQF). These differences are associated with different forms of vocational education and training (VET) and related to social partner (trade union and employer) involvement and the significance attached to underpinning knowledge and broader educational components. A main distinction is drawn between countries where bricklaying continues to be predominantly a ‘trade’, based on narrow skills gained at the workplace, and those where it is conceived as a broader occupation with a substantial knowledge base. A contradiction exists between national VET systems and the European labour market, from which stems the necessity for a European Sectoral Qualifications Framework (SQF) if differences in qualification are to be recognised and if the EQF is to function as a meaningful translational device.

Migration und kulturelle Vielfalt. Zur Einleitung in das Themenheft

Der Artikel führt in das Themenheft ein. "Migration ist […] Thema einer inzwischen breiten aktuellen Forschung. Ein Teil der Beiträge des Themenschwerpunktes entstammt einem solchen Forschungszusammenhang, dem DFG-Schwerpunktprogramm 'Folgen der Arbeitsmigration für Bildung und Erziehung' (Faber); zusammen mit Beiträgen aus anderen Forschungsvorhaben zeigen sie exemplarisch die europäische Problematik, die Migration und Multikulturalität gewonnen haben (u. a. Allemann-Ghionda; Hopf/Hatzichristou; Jungbluth; Reich). Die historische Dimension des Themas und seine Konflikte repräsentieren die Beiträge von Depaepe/Simon/Verbeeck und Krüger-Potratz. Die Autoren richten ihr Augenmerk auf so unterschiedliche Nationen wie Polen, Türken, Griechen und Marokkaner, auf Aussiedler aus der ehemaligen Sowjetunion und auf Kinder von Einwohnern ehemals niederländischer Kolonien (Jungbluth); sie thematisieren ihre Situation als Erwachsene, Sekundarschüler, Grundschüler oder als Kinder vor dem Schulalter; sie behandeln die Lebensmöglichkeiten von Frauen (Gümen/Herwartz-Emden/Westphal) und sie gehen der Frage nach, mit welchen Schwierigkeiten Remigranten in ihren Herkunftsländern zu kämpfen haben (Hopf/Hatzichristou). Gestützt auf unterschiedliche methodische Zugänge - quantitativ-empirisch, qualitativ oder historisch-hermeneutisch - versuchen sie sowohl die Lebenssituation der Migranten wie Möglichkeiten pädagogischer Arbeit darzustellen. Die Beiträge von Reich und Auernheimer tragen schließlich der Tatsache Rechnung, daß man über die Praxis interkultureller Erziehung in Europa und über die Möglichkeiten der Erforschung von Migration inzwischen so viel weiß, daß auch bilanzierende und begriffskritische Analysen möglich sind." (DIPF/Orig.)

Rudolf Lassahn/Birgit Ofenbach (Hrsg.): Bildung in Europa. Frankfurt a. M./Bern: Lang 1993. 162 S. [...] [Sammelrezension]

Sammelrezension von: 1. Rudolf Lassahn/Birgit Ofenbach (Hrsg.): Bildung in Europa. Frankfurt a. M./Bern: Lang 1993. 162 S. 2. Walter Hornstein/Gerd Mutz unter Mitarbeit von Irene Kühnlein und Angelika Poferl: Die europäische Einigung als gesellschaftlicher Prozeß. Soziale Problemlagen, Partizipation und kulturelle Transformation. Baden-Baden: Nomos 1993. 275 S.

Kinematic constraints to the transition redshift from supernovae type Ia union data

The kinematic approach to cosmological tests provides direct evidence to the present accelerating stage of the Universe that does not depend on the validity of general relativity, as well as on the matter-energy content of the Universe. In this context, we consider here a linear two-parameter expansion for the decelerating parameter, q(z)=q(0)+q(1)z, where q(0) and q(1) are arbitrary constants to be constrained by the union supernovae data. By assuming a flat Universe we find that the best fit to the pair of free parameters is (q(0),q(1))=(-0.73,1.5) whereas the transition redshift is z(t)=0.49(-0.07)(+0.14)(1 sigma) +0.54-0.12(2 sigma). This kinematic result is in agreement with some independent analyses and more easily accommodates many dynamical flat models (like Lambda CDM).

Cold Nuclear Matter Effects on J/psi Yields as a Function of Rapidity and Nuclear Geometry in d plus A Collisions at root S(NN)=200 GeV

We present measurements of J/psi yields in d + Au collisions at root S(NN) = 200 GeV recorded by the PHENIX experiment and compare them with yields in p + p collisions at the same energy per nucleon-nucleon collision. The measurements cover a large kinematic range in J/psi rapidity (-2.2 < y < 2.4) with high statistical precision and are compared with two theoretical models: one with nuclear shadowing combined with final state breakup and one with coherent gluon saturation effects. In order to remove model dependent systematic uncertainties we also compare the data to a simple geometric model. The forward rapidity data are inconsistent with nuclear modifications that are linear or exponential in the density weighted longitudinal thickness, such as those from the final state breakup of the bound state.

Azimuthal correlations of electrons from heavy-flavor decay with hadrons in p plus p and Au plus Au collisions at root s(NN)=200 GeV

Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled p+p collisions. These measurements indicate that charm and bottom quarks interact with the hot dense matter produced in heavy-ion collisions much more than expected. Here we extend these studies to two-particle correlations where one particle is an electron from the decay of a heavy-flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interactions between heavy quarks and the matter, such as whether the modification of the away-side-jet shape seen in hadron-hadron correlations is present when the trigger particle is from heavy-meson decay and whether the overall level of away-side-jet suppression is consistent. We statistically subtract correlations of electrons arising from background sources from the inclusive electron-hadron correlations and obtain two-particle azimuthal correlations at root s(NN) = 200 GeV between electrons from heavy-flavor decay with charged hadrons in p+p and also first results in Au+Au collisions. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to p+p collisions.

Measurement of neutral mesons in p plus p collisions at root s=200 GeV and scaling properties of hadron production

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of K(S)(0), omega, eta', and phi mesons in p + p collisions at root s 200 GeV. Measurements of omega and phi production in different decay channels give consistent results. New results for the omega are in agreement with previously published data and extend the measured p(T) coverage. The spectral shapes of all hadron transverse momentum distributions measured by PHENIX are well described by a Tsallis distribution functional form with only two parameters, n and T, determining the high-p(T) and characterizing the low-p(T) regions of the spectra, respectively. The values of these parameters are very similar for all analyzed meson spectra, but with a lower parameter T extracted for protons. The integrated invariant cross sections calculated from the fitted distributions are found to be consistent with existing measurements and with statistical model predictions.

Nuclear modification factors of phi mesons in d plus Au, Cu plus Cu, and Au plus Au collisions at root s(NN)=200 GeV

The PHENIX experiment at the Relativistic Heavy Ion Collider has performed systematic measurements of phi meson production in the K(+)K(-) decay channel at midrapidity in p + p, d + Au, Cu + Cu, and Au + Au collisions at root s(NN) = 200 GeV. Results are presented on the phi invariant yield and the nuclear modification factor R(AA) for Au + Au and Cu + Cu, and R(dA) for d + Au collisions, studied as a function of transverse momentum (1 < p(T) < 7 GeV/c) and centrality. In central and midcentral Au + Au collisions, the R(AA) of phi exhibits a suppression relative to expectations from binary scaled p + p results. The amount of suppression is smaller than that of the pi(0) and the. in the intermediate p(T) range (2-5 GeV/c), whereas, at higher p(T), the phi, pi(0), and. show similar suppression. The baryon (proton and antiproton) excess observed in central Au + Au collisions at intermediate p(T) is not observed for the phi meson despite the similar masses of the proton and the phi. This suggests that the excess is linked to the number of valence quarks in the hadron rather than its mass. The difference gradually disappears with decreasing centrality, and, for peripheral collisions, the R(AA) values for both particle species are consistent with binary scaling. Cu + Cu collisions show the same yield and suppression as Au + Au collisions for the same number of N(part). The R(dA) of phi shows no evidence for cold nuclear effects within uncertainties.

Cross section and double helicity asymmetry for eta mesons and their comparison to pi(0) production in p plus p collisions at root s=200 GeV

Measurements of double-helicity asymmetries in inclusive hadron production in polarized p + p collisions are sensitive to helicity-dependent parton distribution functions, in particular, to the gluon helicity distribution, Delta g. This study focuses on the extraction of the double-helicity asymmetry in eta production ((p) over right arrow + (p) over right arrow -> eta + X), the eta cross section, and the eta/pi(0) cross section ratio. The cross section and ratio measurements provide essential input for the extraction of fragmentation functions that are needed to access the helicity-dependent parton distribution functions.