Ricerc@Sapienza

We examined whether a supervisor’s coaching leadership style predicts the perception of organizational politics in performance appraisal (OPPA) reported by the collaborators. Additionally, we drew on social cognition and motivational life-span development theories to hypothesize age-related differences in perceived OPPA and its link with the coaching leadership style. Using hierarchical linear modeling (HLM) on a sample of 576 employees and 112 leaders, we found that coaching leaders are perceived as less manipulative in their performance ratings, especially by older employees.

In the framework of Heavy Liquid Metal (HLM) GEN IV Nuclear reactor development, the focus is in the combination of security and performance. Numerical simulations with Computational Fluid Dynamics (CFD) or system codes are useful tools to predict the main steady-state phenomena and how transitional accidents could unfold in GEN IV reactors. In this paper, to support the validation of CFD as a valid tool for the design, the capability of ANSYS CFX v15.0 to simulate and reproduce mixed natural convection and thermal stratification phenomena inside a pool is investigated.