Search results for "Expo"
showing 10 items of 2430 documents
Interpretation of gut microbiota data in the ‘eye of the beholder’: A commentary and re‐evaluation of data from ‘Impacts of radiation exposure on the…
2021
1.Evidence that exposure to environmental pollutants can alter the gut microbiota composition of wildlife includes studies of rodents exposed to radionuclides. 2.Antwis et al. (2021) used amplicon sequencing to characterise the gut microbiota of four species of rodent (Myodes glareolus, Apodemus agrarius, A. flavicollis and A. sylvaticus) inhabiting the Chernobyl Exclusion Zone (CEZ) to examine possible changes in gut bacteria (microbiota) and gut fungi (mycobiota) associated with exposure to radionuclides and whether the sample type (from caecum or faeces) affected the analysis. 3.The conclusions derived from the analyses of gut mycobiota are based on data that represent a mixture of inges…
A New Feature Selection Methodology for K-mers Representation of DNA Sequences
2015
DNA sequence decomposition into k-mers and their frequency counting, defines a mapping of a sequence into a numerical space by a numerical feature vector of fixed length. This simple process allows to compare sequences in an alignment free way, using common similarities and distance functions on the numerical codomain of the mapping. The most common used decomposition uses all the substrings of a fixed length k making the codomain of exponential dimension. This obviously can affect the time complexity of the similarity computation, and in general of the machine learning algorithm used for the purpose of sequence analysis. Moreover, the presence of possible noisy features can also affect the…
The Lorenz system : hidden boundary of practical stability and the Lyapunov dimension
2020
On the example of the famous Lorenz system, the difficulties and opportunities of reliable numerical analysis of chaotic dynamical systems are discussed in this article. For the Lorenz system, the boundaries of global stability are estimated and the difficulties of numerically studying the birth of self-excited and hidden attractors, caused by the loss of global stability, are discussed. The problem of reliable numerical computation of the finite-time Lyapunov dimension along the trajectories over large time intervals is discussed. Estimating the Lyapunov dimension of attractors via the Pyragas time-delayed feedback control technique and the Leonov method is demonstrated. Taking into accoun…
Social media adoption in Italian firms. Opportunities and challenges for lagging regions
2021
Social media are an important growth opportunity for firms, especially small‐sized ones operating in peripheral and lagging regions. In this paper, we investigate not only whether firms are able to take this opportunity, but also if they are able to face the challenge of adopting social media at a professional level to obtain a significant economic impact, measured in terms of exporting activities. Exploring the Italian case, our empirical study indicates that smaller firms in lagging areas are more likely to adopt social media but at the same time less likely to use them at a professional level. This reflects poor strategic targets of social media adoption and lower probabilities of enteri…
Analysis of seroprevalence against [i]Coxiella burnetii[/i] in a sample of farm workers in Western Sicily
2015
[b]Introduction and objective. [/b]Little is known about the development of chronic Q fever caused by [i]Coxiella burnetii [/i]in occupational risk groups and in the general population in Italy, as well as in many countries in the world. The aim of this study was to highlight the presence of the infection in a sample of workers operating outdoors (but not directly in contact with animals), in three provinces of western Sicily, in order to detect the human seroprevalence and compare the obtained data with those found in animals raised in the same territory. [b]Materials and methods.[/b] The study included 126 generic seasonal agricultural workers (labourers), 84 male and 42 female; none of w…
Documenting the light sensitivity of Spanish Levantine rock art paintings
2015
[EN] A case study to evaluate the use of microfading spectrometry (MFS) for the study of colored systems found in prehistoric rock art paintings was conducted in the Cova Remígia rock-shelter, Castellón (Spain). This rock shelter is part of the rock art sites of the Mediterranean basin on the Iberian Peninsula included in UNESCO s World Heritage List. Some of the paintings belonging to this group are exposed to environmental factors including natural daylight, wind and rain, depending on the time of the day and the season of the year. Therefore, their preservation is a major concern to stakeholders and researchers responsible for protecting and studying these prehistoric paintings. The expe…
At the Roots of Product Placement: The Mere Exposure Effect
2013
The present study aims to analyze the effect of product placement on attitude change and takes into consideration psychological models of the mere exposure effect. A sample of high school students watched an excerpt from two widely-distributed movies in which several products were shown by using the technique known as product placement. The results indicate that students who saw the commercial brand liked the products more than those who didn’t see it. This effect, in line with the literature on the product placement effect, seems to be independent from the recognition of the brand in the movie excerpt. This study also shows that, in the high involvement condition, one exposure is enough to…
A Comparative Analysis in the Field of the Economic Exposure to Currency Risk
2017
Currency fluctuations became a daily habit of nowadays financial markets and their impact canbe felt in all companies, from the mere domestic ones to the transnational corporations withintricate businesses around the world. Our paper investigates the economic exposure to currencyrisk for a number of 20 companies from Romania and Croatia, between 2006 and 2011, on a shorttermand long-term perspective. The results picture a different image regarding these companies’exposure either to the Euro and the US dollar. We find that Romanian companies are moreexposed to unexpected changes in the value of their national currency against both the Euro andthe US dollar compared to Croatian companies, wit…
Experiencia didáctica: La exposición “L´escola d´ahir” y el seminario-museo de historia de la escuela. // Didactic experience: The exhibition “L´esco…
2012
(ES) La experiencia didáctica de la exposición-museo “L´escola d´ahir” (La escuela de ayer), realizada en la Facultad de Magisterio de Valencia, tiene como objetivo abrir un espacio de reflexión y de estudio sobre la evolución histórica de la educación y de la práctica docente que han configurado la escuela desde el siglo XIX hasta nuestros días. Con esta experiencia didáctica, se pretende conseguir un aprendizaje más participativo y constructivo al contar con material que muestra modelos de enseñanza históricos mediante propuestas metodológicas innovadoras. La exposición-museo sirve de punto de encuentro entre profesionales del ámbito educativo y alumnado de Magisterio para realizar trabaj…
Allergic sensitization to common pets (cats/dogs) according to different possible modalities of exposure: an Italian Multicenter Study
2018
Abstract Background The query “are there animals at home?” is usually administered for collecting information on anamnesis. This modality to consider exposure to pet allergens constitutes a potential bias in epidemiological studies and in clinical practice. The aim of our study was to evaluate/quantify different modalities of exposure to cat/dog in inducing allergic sensitization. Methods Thirty Italian Allergy units participated in this study. Each centre was required to collect the data of at least 20 consecutive outpatients sensitized to cat/dog allergens. A standardized form reported all demographic data and a particular attention was paid in relieving possible modalities of exposure to…