568 research outputs found
Elementi di organizzazione aziendale
The aim of this publication is to offer students an opportunity to go further than the first and basic concepts taught in non-specialist courses in organizations. This publication updates and integrates the handout Introduction to firm organization and the management of human resources for the university courses of Business Administration and Budget Items at the Polytechnic of Turin. The updates specifically cover Chapters 5, 6 and 7 respectively relating to the management and the organisation of firms, the main business activities and the organisational structures. The integrations come above all from the lessons of the course of Managerial Economics for the university course of Management of the Information and the Business Communication at the University of Turin and the analysis on the organizational models for the product development process, Chapters 8 and 9, relating in particular to the automotive sector. The final revised version required the inclusion of some chapters that contextualized the organizational models in a vision extended to the purposes of the companies, chapter 2, the scenarios of change and resistance, chapter 3, and relations with the environment, chapter 4. KEYWORDS: organizzazione aziendale, funzioni, processi, sviluppo prodotto, firm organization, functions, processes, product development
Full counting statistics in the gapped XXZ spin chain
We exploit the knowledge of the entanglement spectrum in the ground state of the gapped XXZ spin chain to derive asymptotic exact results for the full counting statistics of the transverse magnetisation in a large spin block of length \u2113. We found that for a subsystem of even length the full counting statistics is Gaussian, while for odd subsystems it is the sum of two Gaussian distributions. We test our analytic predictions with accurate tensor networks simulations. As a byproduct, we also obtain the symmetry (magnetisation) resolved entanglement entropies
Osservatorio sulle trasformazioni dell’ecosistema automotive italiano 2022
This volume reports the first results of the Observatory on the Transformations of the Italian Automotive Ecosystem. The main focus is on the consequences of the technology acceleration following the European legislation that has decreed the end of the sales of the production of endothermic motors in 2035. The Observatory was founded by CAMI - Department of Management of Ca' Foscari University of Venice and Motus-E, the association of industrial operators that promote electric vehicles. It seeks to identify the key variables to assess whether and to what extent the current technological development is shaping the evolution of the automotive ecosystem, and ultimately whether it represents an opportunity or a threat for incumbents. The main objective of the Observatory is to produce and identify scientific evidence on the ecosystem of mobility to be made available to economic, entrepreneurial, political-institutional and scientific networks. The Observatory is based on a database composed of companies belonging to the industrial chain of road mobility (supply chain for cars, motorcycles, micro-mobility, buses, trucks, as well as companies providing engineering services, components and after-market services and infrastructure for electric and similar refuelling and charging). The technological evolution of recent years is affecting the drive-train of vehicles, which will be subject to radical changes starting from the abandonment of internal combustion engine technology. In this scenario it is no longer enough to continue analysing the ‘traditional supply chain’, but a broader analysis is needed that takes into account the entire mobility ecosystem. Electric mobility is, to date, the most mature technology to replace the endothermic engine and will involve: a radical change in the technological base; an expansion of the boundaries of the automotive supply chain involving those of digitalisation and services; the need for complementary asset development
DEMNUni: The imprint of massive neutrinos on the cross-correlation between cosmic voids and CMB lensing
Cosmic voids are a powerful probe of cosmology and are one of the core
observables of upcoming galaxy surveys. The cross-correlations between voids
and other large-scale structure tracers such as galaxy clustering and galaxy
lensing have been shown to be very sensitive probes of cosmology and among the
most promising to probe the nature of gravity and the neutrino mass. However,
recent measurements of the void imprint on the lensed Cosmic Microwave
Background (CMB) have been shown to be in tension with expectations based on
LCDM simulations, hinting to a possibility of non-standard cosmological
signatures due to massive neutrinos. In this work we use the DEMNUni
cosmological simulations with massive neutrino cosmologies to study the
neutrino impact on voids selected in photometric surveys, e.g. via Luminous Red
Galaxies, as well as on the void- CMB lensing cross-correlation. We show how
the void properties observed in this way (size function, profiles) are affected
by the presence of massive neutrinos compared to the neutrino massless case,
and show how these can vary as a function of the selection method of the void
sample. We comment on the possibility for massive neutrinos to be the source of
the aforementioned tension. Finally, we identify the most promising setup to
detect signatures of massive neutrinos in the voids-CMB lensing
cross-correlation and define a new quantity useful to distinguish among
different neutrino masses by comparing future observations against predictions
from simulations including massive neutrinos.Comment: 34 pages, 15 figure
Auto mia. Autoveicoli a minore impatto ambientale. Una indagine esplorativa
- Indice #3- Introduzione #7- La mobilità sostenibile: le coordinate di un nodo strategico #11- Gli scenari evolutivi di base #19- L'evoluzione della normativa #53- Le strategie delle case automobilistiche #63- I progetti più significativi #103- Le attività di ricerca in merito alle autovetture a minore impatto ambientale #125- Le politiche pubbliche a favore delle autovetture a minore impatto ambientale #139- Considerazioni di sintesi #16
The new scintillating fiber detector of E835 at Fermilab
Abstract The scintillating fiber tracker for the measurement of the polar coordinate θ for experiment E835 at Fermilab has been upgraded, by adding two extra layers (240 fibers each), at R ≈9 cm from the beam axis. Photons from the fibers are detected by Visible Light Photon Counters (VLPCs). The high granularity, flexibility and fast response of the scintillating fibers, combined with the high quantum efficiency of the VLPCs, allow high rate capability, high efficiency, good tracking and time resolution. Signals from the outer two layers are used to provide θ information to the first-level trigger
Symmetry resolved entanglement in gapped integrable systems: a corner transfer matrix approach
We study the symmetry resolved entanglement entropies in gapped integrable
lattice models. We use the corner transfer matrix to investigate two
prototypical gapped systems with a U(1) symmetry: the complex harmonic chain
and the XXZ spin-chain. While the former is a free bosonic system, the latter
is genuinely interacting. We focus on a subsystem being half of an infinitely
long chain. In both models, we obtain exact expressions for the charged moments
and for the symmetry resolved entropies. While for the spin chain we found
exact equipartition of entanglement (i.e. all the symmetry resolved entropies
are the same), this is not the case for the harmonic system where equipartition
is effectively recovered only in some limits. Exploiting the gaussianity of the
harmonic chain, we also develop an exact correlation matrix approach to the
symmetry resolved entanglement that allows us to test numerically our analytic
results.Comment: 45 pages, 10 figures, version
Artificial intelligence in bone metastases: an MRI and CT imaging review
Background: The purpose of this review is to study the role of radiomics as a supporting tool in predicting bone disease status, differentiating benign from malignant bone lesions, and characterizing malignant bone lesions. (2) Methods: Two reviewers conducted the literature search independently. Thirteen articles on radiomics as a decision support tool for bone lesions were selected. The quality of the methodology was evaluated according to the radiomics quality score (RQS). (3) Results: All studies were published between 2018 and 2021 and were retrospective in design. Eleven (85%) studies were MRI-based, and two (15%) were CT-based. The sample size was <200 patients for all studies. There is significant heterogeneity in the literature, as evidenced by the relatively low RQS value (average score = 22.6%). There is not a homogeneous protocol used for MRI sequences among the different studies, although the highest predictive ability was always obtained in T2W-FS. Six articles (46%) reported on the potential application of the model in a clinical setting with a decision curve analysis (DCA). (4) Conclusions: Despite the variability in the radiomics method application, the similarity of results and conclusions observed is encouraging. Substantial limits were found; prospective and multicentric studies are needed to affirm the role of radiomics as a supporting tool
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