1,721,084 research outputs found
Love your work: modelli organizzativi e significato del lavoro per una gestione strategica delle persone
No full textArticolo1, una società italiana di Servizi HR, autorizzata dal Ministero del Lavoro e delle Politiche Sociali, nata nel 2000. Attualmente conta 80 HR consultant che lavorano nelle 21 sedi sul territorio.
Ai fini dello studio esplorativo di seguito illustrato, sono stati coinvolti tutti i dipendenti tra i mesi di marzo e aprile 2015. È stato chiesto loro di indicare le parole che secondo loro meglio rappresentassero Articolo1. Successivamente è stato chiesto loro di scrivere su di un post-it che cosa amassero del proprio lavoro.
L’obiettivo principale dell'indagine è stato quello di verificare innanzitutto la consonanza tra la cultura organizzativa ufficiale di Articolo1 e l'elaborazione soggettiva che ciascun dipendente ne produce nell'esperienza (Tanucci & Manuti, 2007). In seconda battuta la ricerca ha inteso comprendere il significato associato dai partecipanti alla propria esperienza di lavoro in Articolo1.
Infine, lo studio si è posto l'obiettivo di indagare se ed in che misura il cambiamento della struttura organizzativa da modello funzionale a modello olocratico potesse aver inciso su indicatori di performance oggettivi (es. dati di fatturato) e/o su indicatori di percezione psico-sociale (ad es. soddisfazione, motivazione, ecc.)
Accurate and efficient solutions of unsteady viscous flows
No full textThis paper describes two accurate and efficient numerical methods for computing unsteady viscous flows. The first one solves the incompressible Navier-Stokes equations in their vorticity-velocity formulation, using a staggered-grid finite-volume spatial discretization to provide second-order accuracy on arbitrary grids, and combines effectively and alternating direction implicit scheme for the vorticity transport equation and a multigrid line-Gauss-Seidel relaxation for the velocity equations. The second method solves the compressible Reynolds-averaged Navier-Stokes equation in strong conservation form, with k-omega turbulence closure model. The equations are discretized in time using an implicit three-time-level scheme, combined with a dual time stepping approach, so that the residual at every physical time step is annihilated using an efficient multigrid Runge-Kutta iteration with variable time stepping and implicit residual smoothing. The space discretization uses a Roe's flux difference unsteady cascade flow is used to demonstrate the accuracy and efficiency of the method. The authors are currently working towards extending the two approaches described in this paper to three space dimensions
Accurate and efficient solutions of unsteady viscous flows
No full textThis paper describes two accurate and efficient numerical methods for computing unsteady viscous flows. The first one solves the incompressible Navier-Stokes equations in their vorticity-velocity formulation, using a staggered-grid finite-volume spatial discretization to provide second-order accuracy on arbitrary grids and combines effectively an alternating direction implicit scheme for the vorticity transport equation and a multigrid line-Gauss-Seidel relaxation for the velocity equations. The second method solves the compressible Reynolds-averaged Navier-Stokes equations in strong conservation form, with a k - ω turbulence closure model. The equations are discretized in time using an implicit three-time-level scheme, combined with a dual time stepping approach, so that the residual at every physical time step is annihilated using an efficient multigrid Runge-Kutta iteration with variable time stepping and implicit residual smoothing. The space discretization uses a Roe's flux difference splitting for the convective terms and standard central differences for the diffusive ones. A turbulent unsteady cascade flow is used to demonstrate the accuracy and efficiency of the method. The authors are currently working towards extending the two approaches described in this paper to three space dimension
An adaptive multigrid upwind solver for compressible viscous flows
No full textThis paper provides an accurate and efficient methodology for solving the two- and threedimensional Navier-Stokes equations. A flux difference splitting method with a formally second-orderaccurate upwind space discretization is employed for the inviscid fluxes, whereas a central scheme is used for the diffusive ones. Efficiency is enhanced by means of a local time stepping and a full multigrid technique with an explicit time integration scheme. Furthermore, a solution-adaptive local gridrefinement strategy is combined with the multigrid cycle. The methodology is applied to the computation of the two-dimensional laminar and turbulent viscous flows about an isolated airfoil and through two different cascades, whereas the turbulent flow inside the Stanitz elbow is considered as a threedimensional test case. The main aspects concerning accuracy and efficiency are discussed by comparing the computed results with numerical and experimental data available in the literatur
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
An adaptive multigrid upwind solver for two- and three-dimensional viscous flows
No full textThis paper provides an accurate and efficient methodology for solving the Reynolds-averaged Navier-Stokes equations in two and three dimensions. A flux difference splitting method is employed for the inviscid fluxes, whereas a central scheme is used for the diffusive ones. Efficiency is enhanced by means of a full multigrid technique. Moreover, a solution-adaptive local grid-refinement strategy is combined with the multigrid cycle. Conservative periodic boundary conditions on non-periodic C-grids have been developed.
The adaptive-multigrid methodology is applied to the computation of the two-dimensional transonic turbulent flow through the VKI LS-59 cascade, whereas the three-dimensional subsonic turbulent flow through a low aspect ratio turbine stator has been computed by means of a standard grid. Computed results are compared with experimental data available in the literatur
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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