Search results for "31"

Modelling, Simulation and Characterization of a Supercapacitor in Automotive Applications

2020

The energy storage is one of the most discussed topics among Electrical Vehicles (EVs) research. Currently, supercapacitors (SCs) are collecting even more attention due to their unique features such as high-power density, high life cycle and lack of maintenance. In this paper, a supercapacitor model suitable for the simulation in automotive applications is identified. The model parameters are estimated and used to simulate the behaviour of a commercial SCs bank in different operating conditions. The model is finally validated considering experimental results.

Transient DC-Arc Voltage Model in the Hybrid Switch of the DTT Fast Discharge Unit

2021

The focus of this work is the transient modelling of the DC-arc voltage on a Hybrid Switch (a mechanical switch in parallel with a static switch) of a key protection component called Fast Discharge Unit (FDU) in the Divertor Tokamak Test (DTT). The DTT facility is an experimental tokamak in advanced design and realization phase, which will be built in the ENEA Research Centre in Frascati (Italy). The FDU allows the safe discharge of the Toroidal Field (TF) superconducting magnets when a quench is detected or a failure occurs in the power supply or in the cryogenic system. In this work, the arc conductance of the mechanical By-Pass Switch (BPS) of the Hybrid Switch is modelled using the well…

Optical and X-ray Observations of M31N 2007-12b: An Extragalactic Recurrent Nova with a Detected

2009

Deep learning approach for prediction of impact peak appearance at ground reaction force signal of running activity

2020

Protruding impact peak is one of the features of vertical ground reaction force (GRF) that is related to injury risk while running. The present research is dedicated to predicting GRF impact peak appearance by setting a binary classification problem. Kinematic data, namely a number of raw signals in the sagittal plane, collected by the Vicon motion capture system (Oxford Metrics Group, UK) were employed as predictors. Therefore, the input data for the predictive model are presented as a multi-channel time series. Deep learning techniques, namely five convolutional neural network (CNN) models were applied to the binary classification analysis, based on a Multi-Layer Perceptron (MLP) classifi…

An empirical model for free surface energy of strained solids at different temperature regimes.

2006

Abstract We have developed an empirical formulation, based on the elastic theory, to calculate the variation of the surface free energy when a crystal is strained in the elastic regime. The model permits to obtain the variation of the surface energy at different strains and temperatures when are known the thermal dependence on the bulk and surface elastic constants. Molecular dynamics (MD) simulations were performed using the three low index surfaces of Al, to validate the accuracy of the model. The comparison between the empirical model and the MD simulations shows a good agreement for temperatures ranging between 0 and 900 K, and for deformation between −2% and 2%.

Mapping 123 million neonatal, infant and child deaths between 2000 and 2017

2019

Since 2000, many countries have achieved considerable success in improving child survival, but localized progress remains unclear. To inform efforts towards United Nations Sustainable Development Goal 3.2—to end preventable child deaths by 2030—we need consistently estimated data at the subnational level regarding child mortality rates and trends. Here we quantified, for the period 2000–2017, the subnational variation in mortality rates and number of deaths of neonates, infants and children under 5 years of age within 99 low- and middle-income countries using a geostatistical survival model. We estimated that 32% of children under 5 in these countries lived in districts that had attained ra…

Integrated marketing communication as a business management tool in the context of sustainable development

2018

AbstractThe problem of nowadays is that consumers lack information on food products, their composition and quality, nutritional value, packaging, its impact on the human health and environment, reuse and recycling possibilities, etc. Integrated marketing communications (IMC) as a business management tool may not only draw the consumers’ attention and incite a purchase, but also provide information and serve as a facilitator of consumers’ knowledge and competence on products, their nutritional value, use and utilisation. The goal of the research is to assess the impact of IMC for sustainability upon demand at Latvian food retail chains and the impact of the use of IMC for sustainability upon…

The role of public awareness campaigns in sustainable development

2017

The concept of sustainable development has been present in political discourse for many years. Striving to achieve it has become a worldwide priority. Success in this field depends not only on the right government policies. It is also a matter of society engagement. There are different direct and indirect tools intended to promote and reinforce positive changes in social attitudes. Among the most important ones are public awareness campaigns. The aim of the article is to present the ways in which they can contribute to sustainable development and how their positive impact should be properly assessed.

Health system reforms and the needs of the ageing population : an analysis of recent policy paths and reform trends in Finland and Sweden

2022

AbstractPopulation ageing with an increasing number of people experiencing complex health and social care needs challenges health systems. We explore whether andhow health system reforms and policy measures adopted during the past two decades in Finland and Sweden reflect and address the needs of the older people. We discuss health system characteristics that are important to meet the care needs of older people and analyse how health policy agendas have highlighted these aspects in Finland and Sweden. The analysis is based on “most similar cases”. The two countries have rather similar health systems and are facing similar challenges. However, the policy paths to address these challenges are…

Os princípios da administração pública: aspectos a considerar

2000

The article treats about the experience developed in teaching project. The technique employment was looked for that carried in its salience the possibility of larger integration of the academic theoretical knowledge to the reality of the life, that could contribute to a formation more returned to the nowadays ditames. It was outstanding the system aspects of the right and the possibility of the use of the topical thought, giving emphasis to the hole and reduce visions. The reason of the adoption of methodological plurality was described, but it was made with the prominence for the technique of the problematization. It stood out the importance of the principles of the right and its pertinenc…