Search results for "Temporal"

Temporal changes of chromosomal polymorphism in natural populations of Drosophila subobscura

1984

The behaviour of the chromosomal polymorphism of D. subobscura was analyzed in relation to temporal changes, daily, seasonal and annual. Firstly, chromosome analyses were carried out over a year in a natural population. Samples were taken at monthly intervals in Tibidabo, a locality close to Barcelona. In all the months except January, the number of individuals captured was enough to carry out a chromosome analysis of that population. The A, E and O chromosomes showed a great uniformity in the frequencies of gene arrangement over the year. However, significant changes occur in the frequencies of J and U chromosomes. The J1 and U1+2+8 arrangements showed a similar tendency, with two maxima, …

Modelling the spatial-temporal progression of the 2009 A/H1N1 influenza pandemic in Chile

2016

A spatial-temporal transmission model of 2009 A/H1N1 pandemic influenza across Chile, a country that spans a large latitudinal range, is developed to characterize the spatial variation in peak timing of that pandemic as a function of local transmission rates, spatial connectivity assumptions for Chilean regions, and the putative location of introduction of the novel virus into the country. Specifically, a metapopulation SEIR (susceptible-exposed-infected-removed) compartmental model that tracks the transmission dynamics of influenza in 15 Chilean regions is calibrated. The model incorporates population mobility among neighboring regions and indirect mobility to and from other regions via th…

Spatiotemporal Variations in the Abundance and Structure of Denitrifier Communities in Sediments Differing in Nitrate Content

2017

Spatial and temporal variations related to hydric seasonality in abundance and diversity of denitrifier communities were examined in sediments taken from two sites differing in nitrate concentration along a stream Do&ntilde

Bottom-Up Control of Macrobenthic Communities in a Guanotrophic Coastal System

2015

Soft bottom macrobenthic communities were studied seasonally in three coastal ponds (Marinello ponds, Italy) at increasing distances from a gull (Larus michahellis) colony to in- vestigate the effect of seabird-induced eutrophication (i.e. guanotrophication) on macro- benthic fauna.We hypothesized that enhanced nutrient concentration and organic load caused by guano input significantly alter the trophic and sedimentological condition of ponds, affecting benthic fauna through a bottom-up control. The influence of a set of envi- ronmental features on macrobenthic assemblages was also tested. Overall, the lowest macrobenthic abundances and functional group diversity were found in deeper sites,…

Validation study of the Italian Addenbrooke’s Cognitive Examination Revised in a young-old and old-old population

2011

<i>Aims:</i> The main aims of the study were the translation and the subsequent validation in Italian of the Addenbrooke’s Cognitive Examination Revised (ACE-R), and the evaluation of its usefulness in discriminating cognitively normal subjects from patients with mild dementia in an elderly population. <i>Methods:</i> The ACE-R was translated and adapted into Italian. The Italian ACE-R was administered to a group of 179 elderly subjects (72 cognitively healthy and 107 subjects with mild dementia, mean age 75.4 ± 6.4 years). The group was stratified into two subsamples according to age, i.e. a young-old (<75 years) and an old-old (≧75 years) group, in order to eval…

Ageing in an autobiographical context

2000

A cohort study was carried out in 1990 in Jyväskylä, central Finland among 80-year-old residents as part of the Evergreen project. A total of 262 people born in 1910 were interviewed. In addition to epidemiological data, tape-recorded narrative stories focusing on the ageing experience were collected from a subsample of 20 people (10 men and 10 women). A five-year follow-up was carried out with the same cohort in 1995. Out of the 20 people in the original subsample, 17 (8 women and 9 men) were still alive to describe their ageing experience at 85. The analysis proceeded along the hermeneutic circle in the form of dialogue, first with the elderly narrators and then with the tape-recorded mat…

The experience of ageing and advanced old age: a ten-year follow-up

2004

This paper presents, analyses and interprets expressions of the experience of advanced old age based upon the concepts of the French phenomenologist, Maurice Merleau-Ponty, and the German philosopher, Martin Heidegger. During 1990, 262 older residents of the city of Jyväskylä in central Finland were interviewed. They were born in 1910 and aged 80 years at the time. In addition to collecting epidemiological data, the narrative stories on the ageing experience of a sub-sample of 20 respondents (10 men and 10 women) were tape-recorded. A five-year follow-up was carried out with the same cohort in 1995, when 17 of the original sub-sample of 20 were still alive. Unlike five years previously, mos…

Functional data analysis for optimizing strategies of cash flow management

2015

The cash management deals with problem of automating and managing cash flow processes. Optimization of the management processes greatly reduces overall cash handling costs. The present analysis is an empirical study of cash flows, from and to bank branches, deriving an underlying theoretical framework, which can in a reasonable way be connected with the optimal strategy. Functional data analysis is considered an appropriate framework to analyse the dynamics of the time series behavior of cash flows: since the observations are not equally spaced in time and their number is different for each series, they are converted in a collection of random curves in a space spanned by finite dimensional …

Spatio-Temporal Linear Network Point Processes for GPS Data Analysis

This work aims at analyzing the spatio-temporal intensity in the distribution of stop locations of cruise passengers during their visit at the destination. Data are collected through the integration of GPS tracking technology and questionnaire-based survey on a sample of cruise passengers visiting the city of Palermo (Italy), and they are used to identify the main determinants which characterize cruise passengers’ stop locations pattern. The spatio-temporal distribution of visitors' stops is analysed by mean of the theory of stochastic point processes occurring on linear networks, in order to consider the street configuration of the city and the location of the main attractions. First, an i…

Giudizio abbreviato

2015

Il rito, ammesso dal giudice su richiesta del solo imputato, attribuisce a quest’ultimo un vero e proprio diritto a rinunciare alle garanzie dibattimentali proprie del giudizio ordinario in cambio dell’effetto premiale previsto in caso di condanna. Il contributo ha un approccio critico mettendo in risalto, dopo una breve storia dell'istituto, le novità introdotte dal legislatore del 1999.