Analisi spaziale della propagazione del suono nelle sale

Sono state presentate 3 innovatove tecniche di analisi spaziale della propagazione del suono nei teatri. Esse permettono di visualizzare su una immagine di sfondo (360ox180o) utilizzando vari tipi di microfoniWe presented a new approach to the impulse response measurements. It permits the dynamic view of the impulse responses plotted on a panoramic picture (360°x180°) by using 32 high directive virtual microphone

Improving Fisher matrix forecasts for galaxy surveys: window function, bin cross-correlation and bin redshift uncertainty

The Fisher matrix is a widely used tool to forecast the performance of future experiments and approximate the likelihood of large data sets. Most of the forecasts for cosmological parameters in galaxy clustering studies rely on the Fisher matrix approach for large-scale experiments like DES, Euclid or SKA. Here, we improve upon the standard method by taking into account three effects: the finite window function, the correlation between redshift bins and the uncertainty on the bin redshift. The first two effects are negligible only in the limit of infinite surveys. The third effect, in contrast, is negligible for infinitely small bins. Here, we show how to take into account these effects and what the impact on forecasts of a Euclid-type experiment will be. The main result of this paper is that the windowing and the bin cross-correlation induce a considerable change in the forecasted errors, of the order of 10–30 per cent for most cosmological parameters, while the redshift bin uncertainty can be neglected for bins smaller than Δz = 0.1 roughly

A política das plazas nacionales e a atribuição de ofícios públicos na Catalunha após a Guerra de Sucessão: uma desnaturalização da administração

Este artigo analisará a atribuição de ofícios públicos no Principado da Catalunha após a Guerra de Sucessão (1701 - 1714), sobretudo, os métodos utilizados para a escolha de servidores dos ofícios públicos no contexto de reorganização da administração pública na Monarquia espanhola. Nosso objetivo é estudar as políticas utilizadas para essas escolhas, em especial, a política das plazas nacionales, que assegurava que uma parte mínima dos cargos indicados fosse conferida a catalães. Tais medidas foram implementadas na conjuntura que se constrói após a promulgação da Nueva Planta em 1716 por Felipe V, que extinguiu a maioria dos foros do Principado, dentre os quais destacamos as prohibiciones de estrangería, que garantiam a exclusividade dos cargos públicos aos catalães. Para atingir o objetivo proposto, discutiremos a bibliografia sobre esse assunto, em especial, recorrendo aos estudos especializados dos historiadores Pere Molas i Ribalta (1942 - X) e Jean Pierre Dedieu (1948 - X), mapeando as divergências e convergências de perspectiva sobre o tema em questão. Trata-se de um artigo de recenseamento bibliográfico e portanto, suas conclusões serão embasadas na interpretação e contraposição dos trabalhos e das estatísticas prosopográficas mobilizadas pelos autores

Kinetic k-essence ghost dark energy model

A ghost dark energy model has been recently put forward to explain the current accelerated expansion of the Universe. In this model, the energy density of ghost dark energy, which comes from the Veneziano ghost of QCD, is proportional to the Hubble parameter, $\rho_D=\alpha H$. Here $\alpha$ is a constant of order $\Lambda^3_{QCD}$ where $\Lambda_{QCD}\sim 100 MeV$ is the QCD mass scale. We consider a connection between ghost dark energy with/without interaction between the components of the dark sector and the kinetic k-essence field. It is shown that the cosmological evolution of the ghost dark energy dominated Universe can be completely described a kinetic k-essence scalar field. We reconstruct the kinetic k-essence function $F(X)$ in a flat Friedmann-Robertson-Walker Universe according to the evolution of ghost dark energy density.Comment: 11 pages, 15 figures, some clarifications added in the introduction, added references. Accepted for publication in Phys. Lett.

Lesão renal aguda após cirurgias não cardíacas: incidência e impacto das disfunções orgânicas extra-renais nos desfechos

Introdução: A permanência de pacientes em Unidades de Terapia Intensiva (UTI) é frequentemente complicada por Lesão Renal Aguda (LRA), principalmente em casos de sepse, baixo débito cardíaco e pós-operatório de grandes cirurgias. Objetivo: Avaliar a incidência, características, desenvolvimento de outras disfunções orgânicas, e desfechos de pacientes com LRA adquirida na UTI após cirurgias não cardíacas. Métodos: Estudo de coorte, prospectivo. Todos os pacientes internados consecutivamente nas UTIs após cirurgias não cardíacas nos meses de abril e maio de 2017 foram analisados quanto ao desenvolvimento ou não de LRA, de outras disfunções orgânicas e ao balanço hídrico. Resultados: A incidência de LRA foi de 16,2%. Os pacientes que desenvolveram LRA no pós-operatório eram mais graves, e diferiram quanto à necessidade de ventilação mecânica (60% vs. 11%, p < 0,001), uso de drogas vasoativas (82% vs. 44%, p = 0,021); presença de infecção (80% vs. 21%, p < 0,001), sepse ou choque séptico (50% vs. 9%, p < 0,001) e a outras complicações pós-operatórias (91% vs. 58%, p = 0,023). Outras disfunções de órgãos e sistemas foram mais fre-quentes nos pacientes com IRA (2 [2-3] vs. 1 [0-1], p < 0,001), particularmente disfunção gas-trointestinal (73% vs. 19%, p < 0,001) e cardiovascular (73% vs. 33%, p = 0,015). O número de pacientes com duas ou mais disfunções orgânicas aumentou de 21% para 82% em pacientes com LRA (RR 3,89, IC: 2,18 – 6,90, p < 0,001). O tempo de internação (13 ± 9 vs. 5 ± 6 dias, p < 0,001) e a mortalidade hospitalar (54,5% vs. 7%, p = 0,013) foram maiores nos pacientes com LRA. Conclusão: Entre pacientes com cirurgias não cardíacas e necessidade de UTI, a incidência de LRA é elevada e associada a complicações de outros sistemas, incluindo os sistemas neurológico, gastrointestinal, respiratório e cardiovascular; somandose a isso, balanço hídrico acumulado positivo, sepse e choque, maior tempo de internação e maiores taxas de mortalidade também foram encontrados nesses pacientes

Epidemiology and Microbiology of Skin and Soft Tissue Infections: Preliminary Results of a National Registry

Skin and soft tissue infections (SSTIs) represent a wide range of clinical conditions characterized by a considerable variety of clinical presentations and severity. Their aetiology can also vary, with numerous possible causative pathogens. While other authors previously published analyses on several types of SSTI and on restricted types of patients, we conducted a large nationwide surveillance programme on behalf of the Italian Society of Infectious and Tropical Diseases to assess the clinical and microbiological characteristics of the whole SSTI spectrum, from mild to severe life-threatening infections, in both inpatients and outpatients. Twenty-five Infectious Diseases (ID) Centres throughout Italy collected prospectively data concerning both the clinical and microbiological diagnosis of patients affected by SSTIs via an electronic case report form. All the cases included in our database, independently from their severity, have been managed by ID specialists joining the study while SSTIs from other wards/clinics have been excluded from this analysis. Here, we report the preliminary results of our study, referring to a 12-month period (October 2016–September 2017). During this period, the study population included 254 adult patients and a total of 291 SSTI diagnoses were posed, with 36 patients presenting more than one SSTIs. The type of infection diagnosed, the aetiological micro-organisms involved and some notes on their antimicrobial susceptibilities were collected and are reported herein. The enrichment of our registry is ongoing, but these preliminary results suggest that further analysis could soon provide useful information to better understand the national epidemiologic data and the current clinical management of SSTIs in Italy

An embedding technique to determine ττ backgrounds in proton-proton collision data

An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

Peer reviewe

Bose-Einstein correlations of charged hadrons in proton-proton collisions at s\sqrt s = 13 TeV

Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at $\sqrt{s}$ = 7 TeV, as well as with theoretical predictions.[graphic not available: see fulltext]Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at $\sqrt{s} =$ 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at $\sqrt{s} =$ 7 TeV, as well as with theoretical predictions