Search results for "Original data"
showing 10 items of 10 documents
The topics of international publications on paediatric anaesthesia from 1993 to 1998.
2000
A comprehensive compilation of the current international literature on paediatric anaesthesia is still lacking. It was the aim of this study to identify all publications with a focus on paediatric anaesthesia, and to determine the spectrum of topics, as well as the publication type and language for the period between 1993 and 1998. All articles published in 12 major anaesthesia journals were evaluated and, additionally, a computerized, Internet-based Medline-search was performed using selected keywords. The analysis was limited to original articles, case reports, reviews and editorials. For the period between 1993 and 1998, a total of 2259 (377 per year) publications on paediatric anaesthes…
Pragmatic markers resulting from language contact. The case of sañani in Aymara
2020
This paper explores the pragmatic functions of a previously unattested pragmatic marker (Fraser, 1996, 2006) found in Aymara, i.e. sanani ‘let’s say’. The uses of sanani suggest that this marker is the result of the influence of Spanish on Aymara due to sustained language contact. Sanani seems to be the “replication” (Heine and Kuteva, 2005) of the Spanish pragmatic marker digamos ‘let’s say’. Like digamos (Grande Alija, 2010; Quartararo, 2017a), sanani functions as a pragmatic marker by signaling either an inferential process or the semantic relation between two discourse segments. The original data used for this analysis was gathered through the Family Problems Picture task (San Roque et …
Synaptic release of zinc from brain slices: factors governing release, imaging, and accurate calculation of concentration.
2006
Cerebrocortical neurons that store and release zinc synaptically are widely recognized as critical in maintenance of cortical excitability and in certain forms of brain injury and disease. Through the last 20 years, this synaptic release has been observed directly or indirectly and reported in more than a score of publications from over a dozen laboratories in eight countries. However, the concentration of zinc released synaptically has not been established with final certainty. In the present work we have considered six aspects of the methods for studying release that can affect the magnitude of zinc release, the imaging of the release, and the calculated concentration of released zinc. We…
A Cluster Analysis of Stock Market Data Using Hierarchical SOMs
2016
The analysis of stock markets has become relevant mainly because of its financial implications. In this paper, we propose a novel methodology for performing a structured cluster analysis of stock market data. Our proposed method uses a tree-based neural network called the TTOSOM. The TTOSOM performs self-organization to construct tree-based clusters of vector data in the multi-dimensional space. The resultant tree possesses interesting mathematical properties such as a succinct representation of the original data distribution, and a preservation of the underlying topology. In order to demonstrate the capabilities of our method, we analyze 206 assets of the Italian stock market. We were able…
Testing the USLE-M family of models at the Sparacia experimental site in south Italy
2017
The modified Universal Soil Loss Equation (USLE-M) was empirically deduced by a statistical analysis of the original data set of soil loss measurements used to derive the Universal Soil Loss Equation (USLE). The USLE-M, including the effect of runoffin the event rainfall-runofferosivity factor, is characterized by a better capacity to predict event soil loss. At first, in this paper, using the soil erosion representative variables of USLE-M and the reference condition adopted in the USLE, the dimensional analysis and the self-similarity theory are applied to theoretically deduce a multiplicative equation similar to the USLE-M. Then using the database of the Sparacia experimental site, the a…
Improving performance of roundabout intersections by optimizing traffic-flow speed
2017
Streamlining of urban traffic influence nowadays almost everything about our modern life. The main effect, which we all feel as the daily traffic participants, either as pedestrians or vehicles drivrers, is travel time to work and back. Roundabouts intersections have a number of advantages over intersections with traffic lights, they reduce the severity of accidents, traffic speeds to provide an “calmer” road environment. So, operating performance of roundabouts are complicated, influenced by the confluence operations. The paper aims at analyzing the current situation of traffic in two crowded roundabouts in Sibiu, comparing the results with the original data and proposing solutions to impr…
Challenging dominant representations of residential childcare in Romania: an exploration of the views of children and young people living in the care…
2014
This study explores perceptions of risk commonly shared by children and young people living in care system in Romania. The original data, reported here, were gathered through direct interviews with children and young people living in public and private care. In undertaking the research, the authors wanted to challenge dominant, largely media created, representations of the care system in Romania. The aim was to explore the real risks that young people face arising out of their daily experiences. Research data were gathered using a narrative interview approach. Specific forms of risk are identified including: risks arising out of peer and staff relationships, care system policy and practice,…
A critical comment on ‘ankyroids’ (Echinodermata, Stylophora)
2001
Abstract A recent cladistic analysis of stylophoran echinoderms performed by Parsley suggested that mitrates are polyphyletic and derived from symmetrical cornutes. Parsley erected the order Ankyroida to include all derived cornutes and mitrates. The present paper addresses several significant problems in the data matrix of Parsley's cladistic analysis. Detailed morphological comparisons of various stylophorans suggest that important homologies have been ignored: cornute zygal crest and mitrate septum, adorals, glossal and digital. Subanals are not homologous in mitrates. Identification of plate homologies shows that similar-looking symmetrical thecal outlines have been acquired independent…
Random resampling numerical simulations applied to a SEIR compartmental model
2021
AbstractIn this paper, we apply resampling techniques to a modified compartmental SEIR model which takes into account the existence of undetected infected people in an epidemic. In particular, we implement numerical simulations for the evolution of the first wave of the COVID-19 pandemic in Spain in 2020. We show, by using suitable measures of goodness, that the point estimates obtained by the bootstrap samples improve the ones of the original data. For example, the relative error of detected currently infected people is equal to 0.061 for the initial estimates, while it is reduced to 0.0538 for the mean over all bootstrap estimated series.
Additive noise and multiplicative bias as disclosure limitation techniques for continuous microdata: A simulation study
2004
This paper focuses on a combination of two disclosure limitation techniques, additive noise and multiplicative bias, and studies their efficacy in protecting confidentiality of continuous microdata. A Bayesian intruder model is extensively simulated in order to assess the performance of these disclosure limitation techniques as a function of key parameters like the variability amongst profiles in the original data, the amount of users prior information, the amount of bias and noise introduced in the data. The results of the simulation offer insight into the degree of vulnerability of data on continuous random variables and suggests some guidelines for effective protection measures.