4,167 research outputs found
Statistical analysis of the trigger algorithm for the NEMO project
We discuss the performances of a trigger implemented for the planned neutrino
telescope NEMO. This trigger seems capable to discriminate between the signal
and the strong background introduced by atmospheric muons and by the beta decay
of the K-40 nuclei present in the water. The performances of the trigger, as
evaluated on simulated data are analyzed in detail.Comment: Published in the Proceedings of the "I Workshop of Astronomy and
Astrophysics for Students", Eds. N.R. Napolitano & M. Paolillo, Naples, 19-20
April 2006 (astro-ph/0701577
Implementation of the trigger algorithm for the NEMO project
We describe the implementation of trigger algorithm specifically tailored on
the characteristics of the neutrino telescope NEMO. Extensive testing against
realistic simulations shows that, by making use of the uncorrelated nature of
the noise produced mainly by the decay of K-40 beta-decay, this trigger is
capable to discriminate among different types of muonic events.Comment: Published in the Proceedings of the "I Workshop of Astronomy and
Astrophysics for Students", Eds. N.R. Napolitano & M. Paolillo, Naples, 19-20
April 2006 (astro-ph/0701577
Modification of vestibular sensitivity in the rat
Vestibular sensitivity and associated locomotor responses of rats in rotating environmen
Star Formation Rates for photometric samples of galaxies using machine learning methods
Star Formation Rates or SFRs are crucial to constrain theories of galaxy
formation and evolution. SFRs are usually estimated via spectroscopic
observations requiring large amounts of telescope time. We explore an
alternative approach based on the photometric estimation of global SFRs for
large samples of galaxies, by using methods such as automatic parameter space
optimisation, and supervised Machine Learning models. We demonstrate that, with
such approach, accurate multi-band photometry allows to estimate reliable SFRs.
We also investigate how the use of photometric rather than spectroscopic
redshifts, affects the accuracy of derived global SFRs. Finally, we provide a
publicly available catalogue of SFRs for more than 27 million galaxies
extracted from the Sloan Digital Sky survey Data Release 7. The catalogue is
available through the Vizier facility at the following link
ftp://cdsarc.u-strasbg.fr/pub/cats/J/MNRAS/486/1377
Single pulse avalanche robustness and repetitive stress ageing of SiC power MOSFETs
This paper presents an extensive electro-thermal characterisation of latest generation silicon carbide (SiC) Power MOSFETs under unclamped inductive switching (UIS) conditions. Tests are carried out to thoroughly understand the single pulse avalanche ruggedness limits of commercial SiC MOSFETs and assess their aging under repetitive stress conditions. Both a functional and a structural characterisation of the transistors is presented, with the aim of informing future device technology development for robust and reliable power system development
Identifying Medication Management Smartphone App Features Suitable for Young Adults With Developmental Disabilities: Delphi Consensus Study
Background: Smartphone apps can be a tool to facilitate independent medication management among persons with developmental disabilities. At present, multiple medication management apps exist in the market, but only 1 has been specifically designed for persons with developmental disabilities. Before initiating further app development targeting this population, input from stakeholders including persons with developmental disabilities, caregivers, and professionals regarding the most preferred features should be obtained.
Objective: The aim of this study was to identify medication management app features that are suitable to promote independence in the medication management process by young adults with developmental disabilities using a Delphi consensus method.
Methods: A compilation of medication management app features was performed by searching the iTunes App Store, United States, in February 2016, using the following terms: adherence, medication, medication management, medication list, and medication reminder. After identifying features within the retrieved apps, a final list of 42 features grouped into 4 modules (medication list, medication reminder, medication administration record, and additional features) was included in a questionnaire for expert consensus rating. A total of 52 experts in developmental disabilities, including persons with developmental disabilities, caregivers, and professionals, were invited to participate in a 3-round Delphi technique. The purpose was to obtain consensus on features that are preferred and suitable to promote independence in the medication management process among persons with developmental disabilities. Consensus for the first, second, and third rounds was defined as ≥90%, ≥80%, and ≥75% agreement, respectively.
Results: A total of 75 responses were received over the 3 Delphi rounds—30 in the first round, 24 in the second round, and 21 in the third round. At the end of the third round, cumulative consensus was achieved for 60% (12/20) items in the medication list module, 100% (3/3) in the medication reminder module, 67% (2/3) in the medication administration record module, and 63% (10/16) in the additional features module. In addition to the medication list, medication reminder, and medication administration record features, experts selected the following top 3 most important additional features: automatic refills through pharmacies; ability to share medication information from the app with providers; and ability to share medication information from the app with family, friends, and caregivers. The top 3 least important features included a link to an official drug information source, privacy settings and password protection, and prescription refill reminders.
Conclusions: Although several mobile apps for medication management exist, few are specifically designed to support persons with developmental disabilities in the complex medication management process. Of the 42 different features assessed, 64% (27/42) achieved consensus for inclusion in a future medication management app. This study provides information on the features of a medication management app that are most important to persons with developmental disabilities, caregivers, and professionals
Towards a Powerful Hardware‐in‐the‐Loop System for Virtual Calibration of an Off‐Road Diesel Engine
A common challenge among internal combustion engine (ICE) manufacturers is shorten-ing the development time while facing requirements and specifications that are becoming more complex and border in scope. Virtual simulation and calibration are effective instruments in the face of these demands. This article presents the development of zero‐dimensional (0D)—real‐time engine and exhaust after‐treatment system (EAS) models and their deployment on a Virtual test bench (VTB). The models are created using a series of measurements acquired in a real test bench, carefully performed in view of ensuring the highest reliability of the models themselves. A zero‐dimensional approach was chosen to guarantee that models could be run in real‐time and interfaced to the real engine Electronic Control Unit (ECU). Being physically based models, they react to changes in the ECU calibration parameters. Once the models are validated, they are then integrated into a Sim-ulink® based architecture with all the Inputs/Outputs connections to the ECU. This Simulink® model is then deployed on a Hardware in the Loop (HiL) machine for ECU testing and calibration. The results for engine and EAS performance and emissions align with both steady‐state and transient measurements. Finally, two different applications of the HiL system are presented to explain the opportunities and advantages of this tool integrated within the standard engine development. Ex-amples cited refer to altitude calibration activities and soot loading investigation on vehicle duty cycles. The cases described in this work are part of the actual development of one of the latest engines developed by Kohler Engines: the KDI 1903 TCR Stage V. The application of this methodology reveals a great potential for engine development and may become an essential tool for calibration engineers
AIDA, a Modular Web Application for Astronomical Data Analysis and Instrument Monitoring Services
In the last decade, Astronomy has been the scene of the realization of panchromatic surveys, with sophisticated instruments acquiring a huge quantity of exceptional quality data. This poses the need to integrate advanced data-driven science methodologies for the automatic exploration of huge data archives, and the need for efficient short- and long-term monitoring and diagnostics systems. The goal is to keep the quality of the observations under control and to detect and circumscribe anomalies and malfunctions, facilitating rapid and effective corrections, ensuring correct maintenance of all components and the good health of scientific data over time. In particular, this requirement is crucial for space-borne observation systems, both in logistical and economic terms. AIDA (Advanced Infrastructure for Data Analysis) is a portable and modular web application, designed to provide an efficient and intuitive software infrastructure to support monitoring of data acquiring systems over time, diagnostics and both scientific and engineering data quality analysis, particularly suited for astronomical instruments. Given its modular system prerogative, it is possible to extend its functionalities, by integrating and customizing monitoring and diagnostics systems, as well as scientific data analysis solutions, including machine/deep learning and data mining techniques and methods. A specialized version of AIDA has been recently appointed as focal plane instrument operation diagnostics, analytics and monitoring service within the Science Ground Segment of the Euclid space mission
Sull’utilizzo dell’energia cinetica per produzione additiva: primi risultati di prove di fatica e confronto con lavorazioni SLM
Il cold spray (CS) è una tecnica di rivestimento a freddo in cui la deposizione delle polveri avviene
grazie all’impatto ad alta velocità delle particelle contro un substrato e alla conseguente elevata
deformazione plastica, con l’instaurarsi delle condizioni di instabilità adiabatica di taglio.
Nel presente lavoro sono stati considerati provini in In718 prodotti con CS e con SLM, sottoposti a
diversi trattamenti termici, a valle della lavorazione dei provini. La caratterizzazione dei provini ha
compreso l’analisi microstrutturale, la misura degli sforzi residui e della la porosità, mentre le prove
meccaniche hanno previsto prove di trazione statiche e di fatica assiale. I risultati mostrano
caratteristiche e resistenza comparabili a quelle dei provini SLM, suggerendo che il CS, grazie alla
minore temperatura del processo e al ridotto impegno energetico, possa divenire una tecnologia
additiva alternativa o complementare rispetto alle più consolidate tecnologie laser
Massive megarectum secondary to constipation in institutionalized patient
Chronic constipation is a common cause of morbidity in the elderly and institutionalized population. It can be associated with significant morbidity and socioeconomical burden. Chronic resistance constipation can rarely be associated with megarectum. Herein, we present the case of a patient with physical and mental disability that presented with refractory constipation associated with extreme stool burden and a massive megarectum. We discuss chronic constipation in the elderly population, its etiologies and diagnostic work-up including surgical options. The management of chronic constipation with megarectum should be on a case-by-case basis
- …