Exploring the growth index γL: Insights from different CMB dataset combinations and approaches

In this study we investigate the growth index γL, which characterizes the growth of linear matter perturbations, while analysing different cosmological datasets. We compare the approaches implemented by two different patches of the cosmological solver CAMB: MGCAMB and CAMB_GAMMAPRIME_GROWTH. In our analysis we uncover a deviation of the growth index from its expected ΛCDM value of 0.55 when utilizing the Planck dataset, both in the MGCAMB case and in the CAMB_GAMMAPRIME_GROWTH case, but in opposite directions. This deviation is accompanied by a change in the direction of correlations with derived cosmological parameters. However, the incorporation of cosmic microwave background lensing data helps reconcile γL with its Λ-cold dark matter value in both cases. Conversely, the alternative ground-based telescopes Atacama Cosmology Telescope and South Pole Telescope consistently yield growth index values in agreement with γL ¼ 0.55. We conclude that the presence of the Alens problem in the Planck dataset contributes to the observed deviations, underscoring the importance of additional datasets in resolving these discrepancies

Image Reconstruction of Defects in Metallic Plates Using a Multi-Frequency Detector System and a Discrete Geometric Approach

We present an inversion procedure for the image reconstruction of defects in metallic plates, using a multifrequency eddy-current system. The solution of the eddy-current forward problem is achieved by means of a discrete geometric approach, while the inverse problem is resolved with an iterative linearization algorithm based on sensitivity data. In particular, we propose a suitable measurement point on the region under test using a probe coil exited by means a multifrequency signal, in order to improve the amount of usable data and the accuracy of the inverse procedure

Static behavior prediction of microelectrostatic Actuators by Discrete Geometric Approaches

The analysis of a microelectrostatic actuator is presented, formulated by means of the so-called Discrete Geometric Approach applied to the solution of the electrostatic-elastostatic coupled problem. Numerical results computed by means of the proposed approach are compared to those coming from assessed approaches like the finite-element method (FEM) (for both the structural and the electric domains) and FEM/boundary element method (BEM) (FEM for the structure, BEM for the electric domain). A preliminary experimental validation is finally added

Static behaviour prediction of microelectrostatic actuators by discrete geometric approaches

The analysis of a microelectrostatic actuator is presented, formulated by means of the so-called Discrete Geometric Approach applied to the solution of the electrostatic-elastostatic coupled problem. Numerical results computed by means of the proposed approach are compared to those coming from assessed approaches like the finite-element method (FEM) (for both the structural and the electric domains) and FEM/boundary element method (BEM) (FEM for the structure, BEM for the electric domain). A preliminary experimental validation is finally added

Analysis Methodologies and Experimental Benchmarks for ECT

In this paper, we present numerical models and experimental benchmarks for eddy current testing (ECT) applications, developed within the methods and applications of nondestructive electromagnetic diagnostic (MADEND) research project. We compare and validate two different numerical methods for eddy current calculation in the framework of ECT (an integral formulation implemented on a parallel computer system and a discrete formulation based on a geometric approach) by using specifically designed experimental benchmarks and a commercial finite element method based on a differential formulation

Valutazione mediante RM funzionale dell\u2019attivazione motoria in pazienti con sclerosi multipla e fatica

44\ub0 Congresso Nazionale della SIRM - Verona 11-15 giugno 201

F-MRI in the evaluation of motor activation in patients with multiple sclerosis and fatigue

22nd European Congress of Radiology - Vienna 4-8 marzo 201