1,177 research outputs found

    Cross-cultural impression management: a cultural knowledge audit model

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    Purpose – Many people moving into a new culture for work or study do so without prior cross-cultural training, yet successful cultural adaptation has important ramifications. The purpose of this paper is to focus on cross-cultural impression management as an element of cultural adaptation. Does cultural adaptation begin by paying strong attention to nonverbal cues in a host culture? How is that attention converted into knowledge, and how do people use such knowledge management during impression management within the new culture? Design/methodology/approach – The method was qualitative. In total, ten international students at an English university were recruited. All originated outside the European Union and each took part in a one-hour structured interview. The transcripts were analysed through thematic analysis. Findings – International students adopted cross-cultural impression management strategies in order to enhance successful adaptation to the new host culture. Students consciously processed knowledge about nonverbal behaviour norms through everyday interactions. They audited knowledge deficits by detecting differences between the host norms and their home culture's norms. The motives for this included desiring to maximise rewards from situations. Research limitations/implications – The findings imply that being in a new culture makes people “high self monitors”. They are more aware than usual about their own and others' nonverbal behaviours. The findings tell us about how cultural adaptation begins. Originality/value – This appears to be the first in-depth qualitative research examining cross-cultural impression management by international students and deducing implications for expatriates

    Student induction tools: Group contract and group log

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    For academic purposes: You can use this student group contract for teaching, study purposes, research or any non-profit reason without the need to request permission from the authors, provided you retain a reference to the authors within the footnote or citation. An experiment testing this and other student teamwork induction protocols: Kamau, C. and Spong, A. [forthcoming]. A student teamwork induction protocol. Studies in Higher Education. All other purposes: If you want to use this group contract a profit-related reason, please contact the authors. Copyright requests: please contact Dr. Caroline Kamau & Ms. Abigail Spong, Birkbeck, University of London, Department of Organizational Psychology, Malet Street, London, WC1E 7HX, United Kingdom

    Rotation and Neoclassical Ripple Transport in ITER

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    Neoclassical transport in the presence of non-axisymmetric magnetic fields causes a toroidal torque known as neoclassical toroidal viscosity (NTV). The toroidal symmetry of ITER will be broken by the finite number of toroidal field coils and by test blanket modules (TBMs). The addition of ferritic inserts (FIs) will decrease the magnitude of the toroidal field ripple. 3D magnetic equilibria with toroidal field ripple and ferromagnetic structures are calculated for an ITER steady-state scenario using the Variational Moments Equilibrium Code (VMEC). Neoclassical transport quantities in the presence of these error fields are calculated using the Stellarator Fokker-Planck Iterative Neoclassical Conservative Solver (SFINCS). These calculations fully account for ErE_r, flux surface shaping, multiple species, magnitude of ripple, and collisionality rather than applying approximate analytic NTV formulae. As NTV is a complicated nonlinear function of ErE_r, we study its behavior over a plausible range of ErE_r. We estimate the toroidal flow, and hence ErE_r, using a semi-analytic turbulent intrinsic rotation model and NUBEAM calculations of neutral beam torque. The NTV from the n=18\rvert n \rvert = 18 ripple dominates that from lower nn perturbations of the TBMs. With the inclusion of FIs, the magnitude of NTV torque is reduced by about 75% near the edge. We present comparisons of several models of tangential magnetic drifts, finding appreciable differences only for superbanana-plateau transport at small ErE_r. We find the scaling of calculated NTV torque with ripple magnitude to indicate that ripple-trapping may be a significant mechanism for NTV in ITER. The computed NTV torque without ferritic components is comparable in magnitude to the NBI and intrinsic turbulent torques and will likely damp rotation, but the NTV torque is significantly reduced by the planned ferritic inserts

    Subdominant modes and optimization trends of DIII-D reverse magnetic shear configurations

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    Alfven Eigenmodes and magneto-hydrodynamic modes are destabilized in DIII-D reverse magnetic shear configurations and may limit the performance of the device. We use the reduced MHD equations in a full 3D system, coupled with equations of density and parallel velocity moments for the energetic particles (with gyro-fluid closures) as well as the geodesic acoustic wave dynamics. The aim of the study consists in finding ways to avoid or minimize MHD and AE activity for different magnetic field configurations and neutral beam injection operational regimes. The simulations show at the beginning of the discharge, before the reverse shear region is formed, a plasma that is AE unstable and marginally MHD stable. As soon as the reverse shear region appears, ideal MHD modes are destabilized with a larger growth rate than the AEs. Both MHD modes and AEs coexist during the discharge, although the MHD modes are more unstable as the reverse shear region deepens. The simulations indicate the destabilization of Beta induced AE, Toroidal AE, Elliptical AE and Reverse Shear AE at different phases of the discharges. A further analysis of the NBI operational regime indicates that the AE stability can be improved if the NBI injection is off axis, because on-axis injection leads to AEs with larger growth rate and frequency. In addition, decreasing the beam energy or increasing the NBI relative density leads to AEs with larger growth rate and frequency, so an NBI operation in the weakly resonant regime requires higher beam energies than in the experiment. The MHD linear stability can be also improved if the reverse shear region and the q profile near the magnetic axis are in between the rational surfaces q=2 and q=1, particularly if there is a region in the core with negative shear, avoiding a flat q profile near the magnetic axis

    Subdominant modes and optimization trends of DIII-D reverse magnetic shear configurations

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    Alfvén Eigenmodes (AE) and magneto-hydrodynamic (MHD) modes are destabilized in DIII-D reverse magnetic shear configurations and may limit the performance of the device. We use the reduced MHD equations in a full 3D system, coupled with equations of density and parallel velocity moments for the energetic particles (with gyro-fluid closures) as well as the geodesic acoustic wave dynamics, to study the properties of instabilities observed in DIII-D reverse magnetic shear discharges. The aim of the study consists in finding ways to avoid or minimize MHD and AE activity for different magnetic field configurations and neutral beam injection (NBI) operational regimes. The simulations show at the beginning of the discharge, before the reverse shear region is formed, a plasma that is AE unstable and marginally MHD stable. As soon as the reverse shear region appears, ideal MHD modes are destabilized with a larger growth rate than the AEs. Both MHD modes and AEs coexist during the discharge, although the MHD modes are more unstable as the reverse shear region deepens. The simulations indicate the destabilization of Beta induced AE (BAE), Toroidal AE (TAE), elliptical AE (EAE) and reverse shear AE (RSAE) at different phases of the discharges, showing a reasonable agreement between the frequency range of the dominant modes in the simulations and the diagnostic measurements (...)This material based on work is supported both by the U.S. Department of Energy, Office of Science, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC and U.S. Department of Energy, Oce of Science, Oce of Fusion Energy Sciences, using the DIII-D National Fusion Facility, a DOE Oce of Science user facility, under Award No. DE-FC02-04ER54698. This research was sponsored in part by the Ministerio of Economía y Competitividad of Spain under project no.ENE2015-68265-P. DIII-D data shown in this paper can be obtained in digital format by following the links at https://fusion.gat.com/global/D3D DMP.Publicad
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