Representational predicaments for employees: Their impact on perceptions of supervisors\u27 individualized consideration and on employee job satisfaction

A representational predicament for a subordinate vis-à-vis his or her immediate superior involves perceptual incongruence with the superior about the subordinate\u27s work or work context, with unfavourable implications for the employee. An instrument to measure the incidence of two types of representational predicament, being neglected and negative slanting, was developed and then validated through an initial survey of 327 employees. A subsequent substantive survey with a fresh sample of 330 employees largely supported a conceptual model linking being neglected and negative slanting to perceptions of low individualized consideration by superiors and to low overall job satisfaction. The respondents in both surveys were all Hong Kong Chinese. Two case examples drawn from qualitative interviews illustrate and support the conceptual model. Based on the research findings, we recommend some practical exercises to use in training interventions with leaders and subordinates. © 2013 Copyright Taylor and Francis Group, LLC

Berechnung instationaerer turbulenter Grenzschichten mit Feld- und Integralverfahren

Numerical methods for turbulent boundary layers mainly serve to test turbulence models designed for use in Navier-Stokes methods to be expected in the future. The numerical algorithms for solving the boundary-layer equations today have sufficient accuracy and in contrast to other solvers do not require any artificial damping or smoothing. In addition to this, aviation industry uses methods for coupling inviscid and viscous flows, which require an efficient boundary-layer method. Of particular advantage are boundary-layer integral methods, which therefore were intensively validated in comparison with experiments and field methods in the Aeroelastics Department and subsequently applied to calculate steady and unsteady wing flows. This paper discusses calculations using field as well as integral methods in comparison with experiments and furnishes proof that present unsteady measured boundary layers may be computed using these methods as well as steady turbulence models. The justification is based on the finding that unsteady boundary layers oscillate in longitudinal direction with a period of Sr_x #approx# 5, periodically stretching the self-similar velocity profiles. Using a vortex viscosity approach, it is also possible to reproduce the measured amplitudes and phase positions of Reynolds stresses. (orig.)Also published in DGLR--94-04, p. 152-156Available from TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Optimierung aktivmetallgeloeteter Keramik/Keramik- und Keramik/Metall-Verbindungen

In dieser Arbeit wurde eine Optimierung an den Lotverbunden SRBSN/Stahl und Al_2O_3-ZrO_2-Dispersionskeramik/Stahl durchgefuehrt. Dazu kamen die Lote CuAgTi, CuSnTi und AgCuHf zum Einsatz. Weitere Lote mit Zusaetzen von Zr, Y und Nd erlaubten keine haftfesten Verbunde und wurden nicht naeher untersucht. (orig.)Optimisation of the solder compounds SRBSN/Steel and Al_2O_3-ZrO_2 -dispersion ceramic/steel was carried out in this work. The CuAgTi, CuSnTi and AgCuHf solders were also used. Other solders with additives of Zr, Y and Nd did not produce adhesive joints and were not examined in detail. (orig.)SIGLEAvailable from TIB Hannover: H93B1467 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman