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This study explores the sociometric status group differences in psychosocial adjustment and academic performance in various domains using multiple sources of information (teacher-, peer-, self-ratings, achievement data) and 2 age groups (elementary and secondary school students) in a different educational and cultural context. Gender differences in the profiles of the sociometric groups were also examined. The sample consisted of 1,041 elementary school (mean age = 11.4 years) and 862 secondary school (mean age = 14.3 years) students in public schools in Greece. Findings extended previous descriptions of rejected, neglected, and controversial groups based on the perceptions of all raters. Gender and age differences were found in the profiles of rejected and controversial groups, which were markedly distinguished from the other groups based on all data sets. Neglected children at both age levels were differentiated to a weaker degree.
The paper presents a method that determines, by standard numerical means, the type of mutual relations of fold and flip bifurcations (configured as a so-called communication area) of a map. Equation systems are developed for the computation of points where a transition between areas of different types occurs. Furthermore, it is shown that saddle area<->spring area transitions can exist which have not yet been considered in the literature. Analytical conditions of that transition are derived.
We have numerically studied the bifurcation properties of a sheet pinch with impenetrable stress-free boundaries. An incompressible, electrically conducting fluid with spatially and temporally uniform kinematic viscosity and magnetic diffusivity is confined between planes at x1=0 and 1. Periodic boundary conditions are assumed in the x2 and x3 directions and the magnetofluid is driven by an electric field in the x3 direction, prescribed on the boundary planes. There is a stationary basic state with the fluid at rest and a uniform current J=(0,0,J3). Surprisingly, this basic state proves to be stable and apparently to be the only time-asymptotic state, no matter how strong the applied electric field and irrespective of the other control parameters of the system, namely, the magnetic Prandtl number, the spatial periods L2 and L3 in the x2 and x3 directions, and the mean values B¯2 and B¯3 of the magnetic-field components in these directions.
Advances in chitin science
(1996)
Amplifying bienzyme cycle-linked immunoassays for determination of 2,4- dichlorphenoxyacetic acid
(1996)
An attempt to introduce finite diffusion regions into magnetohydrodynamic reconnection models
(1996)
Annelated calixarenes composed of Calix[4]arenes with hydroxy groups in the endo and exo position
(1996)
For bilayer stacks of non-centrosymmetrical molecules, formed by the Langmuir-Blodgett (LB) technique (Y deposition), 00l peaks for the bilayer period are usually observed in the X-ray specular reflectivity curve, in this study, we show that the introduction of stacking disorder at lower transfer ratios and the subsequent partial repair of defects by a parallel shift of oppositely oriented molecules into the vacancies may result in the formation of antiphase domains and in an increase in the average monolayer symmetry followed by quenching of the bilayer peaks. The X-ray reflectivity data, obtained for multilayers of penta-alkynes, are used to demonstrate this real structural effect, which is expected to be of general importance for X-ray and neutron reflectivity data reduction and for the structural modelling of multilayers.
We report on bifurcation studies for the incompressible magnetohydrodynamic equations in three space dimensions with periodic boundary conditions and a temporally constant external forcing. Fourier representations of velocity, pressure and magnetic field have been used to transform the original partial differential equations into systems of ordinary differential equations (ODE), to which then special numerical methods for the qualitative analysis of systems of ODE have been applied, supplemented by the simulative calculation of solutions for selected initial conditions. In a part of the calculations, in order to reduce the number of modes to be retained, the concept of approximate inertial manifolds has been applied. For varying (increasing from zero) strength of the imposed forcing, or varying Reynolds number, respectively, time-asymptotic states, notably stable stationary solutions, have been traced. A primary non- magnetic steady state loses, in a Hopf bifurcation, stability to a periodic state with a non-vanishing magnetic field, showing the appearance of a generic dynamo effect. From now on the magnetic field is present for all values of the forcing. The Hopf bifurcation is followed by further, symmetry-breaking, bifurcations, leading finally to chaos. We pay particular attention to kinetic and magnetic helicities. The dynamo effect is observed only if the forcing is chosen such that a mean kinetic helicity is generated; otherwise the magnetic field diffuses away, and the time-asymptotic states are non-magnetic, in accordance with traditional kinematic dynamo theory.
Brecht and the Jews
(1996)
Observers of international politics have been conscious of the growing international involvement of non-central governments (NCGs), particularly in federal systems. These have been supplemented by the internationalisation of subnational actors in quasi-federal and even unitary states. One of the difficulties is that analysis has often been locked into the dominant paradigm debate in International Relations concerning who and who are not significant actors. Having briefly explored the nature of this changing environment, marked by a growing emphasis on access rather than control as a policy objective and the emergence of what is termed a 'catalytic diplomacy', the discussion focuses on the need for linkage between the levels of government in the pursuit of international as well as domestic policy goals. The nature of linkage mechanisms are discussed.
Clones and hyperidentities
(1996)
Complete 3D potential energy surfaces for the two lowest electronic states of the system (N2H)+
(1996)
Consequences of current generation in the ionosphere caused by neutral wind action on Es-clouds
(1996)
Crystal structure of methoxo-oxo[benzoylaceton-salicyl hydrazonato(2-)]vanadium(V), C18H17N2O5V
(1996)
Davis, A., Wells, S., Shakespeare and the moving image; Cambridge, Cambridge Univ. Press, 1994
(1996)
Inhalt: 1. Einleitung 1.1. Forschungsziele 1.2. Arbeitsmethodik 1.3. Aufbau der Pilotstudie 2. Kommunale Verwaltungsreform in Brandenburg 3. Die Kreisverwaltung Potsdam-Mittelmark 3.1. Der Landkreis Potsdam-Mittelmark 3.2. Das Personal der Kreisverwaltung 3.3. Verbeamtungskonzept 3.4. Folgen der Kreisgebietsreform 3.5. Gleichstellungsfragen 4. Verwaltungsreform im Landkreis Potsdam-Mittelmark 4.1. Zum Reformansatz 4.2. Weitere Reformschritte 4.3. Ziele der Reform 4.4. Leitbilddiskussion 4.5. Mitarbeiter und Reform 4.6. Personalrat und Reform 4.7. ÖTV und Reform 5. Personalfragen bei der Verwaltungsreform im Landkreis Potsdam-Mittelmark 5.1. Defizite im Personalbereich 5.2. Zur Arbeitsmotivation der Mitarbeiter in der Kreisverwaltung 5.3. Elemente des modernen Personalmanagements 5.4. Instrumente in der Personalarbeit - 5.4.1. Mitarbeiterbefragung - 5.4.2. Weiterbildung - 5.4.2. Weiterbildung 6. Ergebnisse der Pilotstudie 6.1. Besonderheiten der Verwaltungsreform in den neuen Bundesländern am Beispiel Potsdam-Mittelmark 6.2. Zwischenbilanz zur Umsetzung der Modernisierungskonzeption 6.3. Vorschläge für die Fortsetzung des Projekts
Diversity in work styles
(1996)