413 research outputs found
Politiche a sostegno dell’automotive che cambia
La ricerca di nuovi metodi di propulsione per le automobili è oggetto di intenso dibattito a tutti i livelli a causa del riscaldamento globale, delle emissioni degli agenti inquinanti e più in generale per la necessità di proteggere in modo sostenibile l’industria automobilistica dai paesi produttori di nuova industrializzazione. Le trasformazioni in corso dell’ecosistema automotive per potersi tramutare in opportunità per l’intera filiera produttiva italiana, e non tramutarsi in occasioni mancate, necessitano inevitabilmente del supporto e dell’indirizzamento delle istituzioni e in particolare del Governo centrale. In particolare, il ruolo dell’automobile come elemento di mobilità è in fase di rinegoziazione e implica, in primo luogo, decisioni di natura pubblica in termini essenzialmente di regolamentazione, incentivazione e tassazione, con inevitabili conseguenze sui modelli di sviluppo delle imprese appartenenti alla filiera automobilistica e a quei territori altamente specializzati in tali attività. Nei paesi con un’importante tradizione automobilistica, gli interventi di politica industriale a livello nazionale e regionale sono stati significativi e di varia natura fino alla presenza diretta degli stati nel capitale sociale degli assemblatori finali e dei fornitori, come è avvenuto in Francia e in Germania. Difendere la produzione italiana nell’assemblaggio finale come nella fornitura significa
salvaguardare, oltre a un comparto industriale strategico, una considerevole porzione di PIL e l’occupazione di quasi un milione di addetti
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
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
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
Extended criteria donor lung reconditioning with the organ care system lung: a single institution experience
Lung transplantation is a life-saving procedure limited by donor's availability. Lung reconditioning by ex vivo lung perfusion represents a tool to expand the donor pool. In this study, we describe our experience with the OCS\u2122 Lung to assess and recondition extended criteria lungs. From January 2014 to October 2016, of 86 on-site donors evaluated, eight lungs have been identified as potentially treatable with OCS\u2122 Lung. We analyzed data from these donors and the recipient outcomes after transplantation. All donor lungs improved during OCS perfusion in particular regarding the PaO2/FiO2 ratio (from 340 mmHg in donor to 537 mmHg in OCS) leading to lung transplantation in all cases. Concerning postoperative results, primary graft dysfunction score 3 at 72 h was observed in one patient, while median mechanical ventilation time, ICU, and hospital stay were 60 h, 14 and 36 days respectively. One in-hospital death was recorded (12.5%), while other two patients died during follow-up leading to 1-year survival of 62.5%. The remaining five patients are alive and in good conditions. This case series demonstrates the feasibility and value of lung reconditioning with the OCS\u2122 Lung; a prospective trial is underway to validate its role to safely increase the number of donor lungs. \ua9 2018 Steunstichting ESO
Entanglement Hamiltonians in 1D free lattice models after a global quantum quench
We study the temporal evolution of the entanglement Hamiltonian of an interval after a global quantum quench in free lattice models in one spatial dimension. In a harmonic chain we explore a quench of the frequency parameter. In a chain of free fermions at half filling we consider the evolution of the ground state of a fully dimerised chain through the homogeneous Hamiltonian. We focus on critical evolution Hamiltonians. The temporal evolutions of the gaps in the entanglement spectrum are analysed. The entanglement Hamiltonians in these models are characterised by matrices that provide also contours for the entanglement entropies. The temporal evolution of these contours for the entanglement entropy is studied, also by employing existing conformal field theory results for the semi-infinite line and the quasi-particle picture for the global quench
The Simons Observatory: Galactic Science Goals and Forecasts
Observing in six frequency bands from 27 to 280 GHz over a large sky area,
the Simons Observatory (SO) is poised to address many questions in Galactic
astrophysics in addition to its principal cosmological goals. In this work, we
provide quantitative forecasts on astrophysical parameters of interest for a
range of Galactic science cases. We find that SO can: constrain the frequency
spectrum of polarized dust emission at a level of
and thus test models of dust composition that predict that in
polarization differs from that measured in total intensity; measure the
correlation coefficient between polarized dust and synchrotron emission with a
factor of two greater precision than current constraints; exclude the
non-existence of exo-Oort clouds at roughly 2.9 if the true fraction is
similar to the detection rate of giant planets; map more than 850 molecular
clouds with at least 50 independent polarization measurements at 1 pc
resolution; detect or place upper limits on the polarization fractions of
CO(2-1) emission and anomalous microwave emission at the 0.1% level in select
regions; and measure the correlation coefficient between optical starlight
polarization and microwave polarized dust emission in patches for all
lines of sight with cm. The goals and
forecasts outlined here provide a roadmap for other microwave polarization
experiments to expand their scientific scope via Milky Way astrophysics.Comment: Submitted to AAS journals. 33 pages, 10 figure
CMB-S4: Forecasting Constraints on Primordial Gravitational Waves
CMB-S4---the next-generation ground-based cosmic microwave background (CMB)
experiment---is set to significantly advance the sensitivity of CMB
measurements and enhance our understanding of the origin and evolution of the
Universe, from the highest energies at the dawn of time through the growth of
structure to the present day. Among the science cases pursued with CMB-S4, the
quest for detecting primordial gravitational waves is a central driver of the
experimental design. This work details the development of a forecasting
framework that includes a power-spectrum-based semi-analytic projection tool,
targeted explicitly towards optimizing constraints on the tensor-to-scalar
ratio, , in the presence of Galactic foregrounds and gravitational lensing
of the CMB. This framework is unique in its direct use of information from the
achieved performance of current Stage 2--3 CMB experiments to robustly forecast
the science reach of upcoming CMB-polarization endeavors. The methodology
allows for rapid iteration over experimental configurations and offers a
flexible way to optimize the design of future experiments given a desired
scientific goal. To form a closed-loop process, we couple this semi-analytic
tool with map-based validation studies, which allow for the injection of
additional complexity and verification of our forecasts with several
independent analysis methods. We document multiple rounds of forecasts for
CMB-S4 using this process and the resulting establishment of the current
reference design of the primordial gravitational-wave component of the Stage-4
experiment, optimized to achieve our science goals of detecting primordial
gravitational waves for at greater than , or, in the
absence of a detection, of reaching an upper limit of at CL.Comment: 24 pages, 8 figures, 9 tables, submitted to ApJ. arXiv admin note:
text overlap with arXiv:1907.0447
Les droits disciplinaires des fonctions publiques : « unification », « harmonisation » ou « distanciation ». A propos de la loi du 26 avril 2016 relative à la déontologie et aux droits et obligations des fonctionnaires
The production of tt‾ , W+bb‾ and W+cc‾ is studied in the forward region of proton–proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb experiment, corresponding to an integrated luminosity of 1.98±0.02 fb−1 . The W bosons are reconstructed in the decays W→ℓν , where ℓ denotes muon or electron, while the b and c quarks are reconstructed as jets. All measured cross-sections are in agreement with next-to-leading-order Standard Model predictions.The production of , and is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb experiment, corresponding to an integrated luminosity of 1.98 0.02 \mbox{fb}^{-1}. The bosons are reconstructed in the decays , where denotes muon or electron, while the and quarks are reconstructed as jets. All measured cross-sections are in agreement with next-to-leading-order Standard Model predictions
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era
The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHCb spectrometer. The LHCb Upgrade I will begin operation in 2020. Consolidation will occur, and modest enhancements of the Upgrade I detector will be installed, in Long Shutdown 3 of the LHC (2025) and these are discussed here. The main Upgrade II detector will be installed in long shutdown 4 of the LHC (2030) and will build on the strengths of the current LHCb experiment and the Upgrade I. It will operate at a luminosity up to 2×1034
cm−2s−1, ten times that of the Upgrade I detector. New detector components will improve the intrinsic performance of the experiment in certain key areas. An Expression Of Interest proposing Upgrade II was submitted in February 2017. The physics case for the Upgrade II is presented here in more depth. CP-violating phases will be measured with precisions unattainable at any other envisaged facility. The experiment will probe b → sl+l−and b → dl+l− transitions in both muon and electron decays in modes not accessible at Upgrade I. Minimal flavour violation will be tested with a precision measurement of the ratio of B(B0 → μ+μ−)/B(Bs → μ+μ−). Probing charm CP violation at the 10−5 level may result in its long sought discovery. Major advances in hadron spectroscopy will be possible, which will be powerful probes of low energy QCD. Upgrade II potentially will have the highest sensitivity of all the LHC experiments on the Higgs to charm-quark couplings. Generically, the new physics mass scale probed, for fixed couplings, will almost double compared with the pre-HL-LHC era; this extended reach for flavour physics is similar to that which would be achieved by the HE-LHC proposal for the energy frontier
- …