Search results for " BIA"
showing 10 items of 529 documents
Illumination Correction on MR Images
2006
Objective. An important artifact corrupting Magnetic Resonance Images is the rf inhomogeneity, also called bias artifact. This anomaly produces an abnormal illumination fluctuation on the image, due to variations of the device magnetic field. This artifact is particularly strong on images acquired with a device specialized on upper and lower limbs due to their coil configuration. A method based on homomorphic filtering aimed to suppress this artifact was proposed by Guillemaud. This filter has two faults: it doesnt provide an indication about the cutoff frequency (cf) and introduces another illumination artifact on the edges of the foreground. This work is an improvement to this method because i…
Operational forecasting of daily summer maximum and minimum temperatures in the Valencia Region
2013
Extreme-temperature events have a great impact on human society. Thus, knowledge of summer temperatures can be very useful both for the general public and for organizations whose workers operate in the open. An accurate forecasting of summer maximum and minimum temperatures could help to predict heatwave conditions and permit the implementation of strategies aimed at minimizing the negative effects that high temperatures have on human health. The objective of this work is to evaluate the skill of the regional atmospheric and modelling system (RAMS) model in determining daily summer maximum and minimum temperatures in the Valencia Region. For this, we have used the real-time configuration of…
A Comprehensive Spatiotemporal Framework for Hedonic Pricing: Integrating the Comparable Sales Approach and Minimizing Spatial Omitted Variable Bias
2019
This paper develops a theoretical and methodological framework that integrates Hedonic Pricing (HP), grid comparable sales approach (CSA), and nearest neighbors into a general spatiotemporal specification. By explicitly providing a theoretical justification for introducing spatial (or spatiotemporal) econometrics to HP, this approach is not only relevant to house price forecasting and automated valuation models (AVM) but also to valuing environmental goods capitalized in housing and to all other fields employing house pricing models. The resulting econometric CSA and spatiotemporal Durbin models provide higher prediction accuracy and reliability to alternatives by reducing the spatially-del…
“Agrīnās Haņ dinastijas vēsture” un tās ietekme uz dinastiju vēstures pierakstīšanas tradīciju Ķīnā
2017
Maģistra darba nosaukums ir „„Agrīnās Haņ dinastijas vēsture” un tās ietekme uz dinastiju vēstures pierakstīšanas tradīciju Ķīnā”. Katra dinastija, balstoties uz aktuālajiem pierakstiem, rakstīja iepriekšējo dinastiju vēstures. Šīs oficiālās standarta dinastiju vēstures, t.s. dženši 正史, pazīst ar nosaukumu „Divdesmit četras vēstures” (Eršisi ši 二十四史). Kā pirmo tieši vienas dinastijas vēstures aprakstam veltīto darbu uzskata vēsturnieka un galma ierēdņa Baņ Gu un viņa tēva Baņ Bjao sastādīto „Agrīnās Haņ dinastijas vēsturi” (Haņ šu 漢書). Baņ Gu „Agrīnās Haņ dinastijas vēsturē” izstrādājis jaunu struktūru dinastiju vēstures pierakstīšanā, kas vēlāk izmantota par paraugu tieši dinastiju vēsture…
Directionnalité graphique et dominance manuelle : une perspective développementale et interculturelle
2012
In the present work, we try to provide some understanding about the factors underlying the directional tendencies, by examining the impact of biomechanical constraints and cultural habits on directionality in graphic movements. French and Syrian subjects, children and adults, were compared in six experiments in order, to put in evidence the cognitive and psychomotor differences caused by the fact that the Eastern and Western cultures oppose on the directionality of writing and reading habits, and that the two hands are opposite in the directionality by adopting movements determined by biomechanical constraints. Likewise, this comparison allowed us to determine the relative strength of these…
Do Body Composition and Values of Selected Nutritional Status Indices Influence the Glycaemic Index Values of Vegetarian Dishes? A Pilot Study in a G…
2022
An ageing population brings with it the need for public policy to respond to the demands and health needs of this group of people. The ageing process has been shown to be associated with changes in body composition. These mainly concern a decrease in muscle mass and an increase in body fat. Body composition and other indicators of nutritional status are important factors differentiating carbohydrate management. Glycaemic index (GI) values may be affected by differences resulting from individual metabolism. The rate of carbohydrate digestion is also influenced by a number of factors, including the degree to which the product is processed, the structure of the starch, and the presence of prot…
SUL METODO MAFIOSO
2009
In un mondo globalizzato, l’incontro tra criminalità organizzata e sistema economico ‘ufficiale’ genera convergenze di interessi a limite della legalità, profilandosi spesso non tanto come il connubio tra entità inconciliabili, ma come l’unione tra due mondi che procedono entrambi al di fuori delle regole. La globalizzazione produce mobilità e competizione; entrambe, spingono verso alleanze che valicano spesso i confini tra lecito e illecito. Per adeguarsi ad uno scenario mutevole ed evitare il controllo sociale istituzionale, i nuovi sistemi criminali si dotano di strutture flessibili e reticolari, i cui metodi e le cui procedure rendono meno visibile il confine tra ciò che è lecito e ciò …
Recurrences following treatment of proliferative verrucous leukoplakia: A systematic review and meta-analysis.
2021
Objective A systematic review and meta-analysis was made of the incidence of recurrences in patients with proliferative verrucous leukoplakia subjected to different types of treatment. Methods The study was carried out following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement guidelines. A literature search was made in the Medline (PubMed), EMBASE and Web of Science databases, together with a manual search, covering the period from 1985 to January 2020, with no language restrictions. Studies were included if they described treatments applied to at least 10 patients with the corresponding outcomes. Methodological quality was evaluated using Jadad sca…
Home pesticide exposures and risk of childhood leukemia: Findings from the childhood leukemia international consortium
2015
Some previous studies have suggested that home pesticide exposure before birth and during a child's early years may increase the risk of childhood leukemia. To further investigate this, we pooled individual level data from 12 case-control studies in the Childhood Leukemia International Consortium. Exposure data were harmonized into compatible formats. Pooled analyses were undertaken using multivariable unconditional logistic regression. The odds ratio (ORs) for acute lymphoblastic leukemia (ALL) associated with any pesticide exposure shortly before conception, during pregnancy and after birth were 1.39 (95% confidence interval [CI]: 1.25, 1.55) (using 2,785 cases and 3,635 controls), 1.43 (…
Bipolar membranes under forward and reverse bias conditions. Theory vs. experiment
1994
Abstract Bipolar membranes are layered structures composed of one cation-and one anion-exchange membrane joined together in series. The current—voltage curves of two recently developed bipolar membranes have been analysed theoretically and experimentally under both forward and reverse bias conditions. The experimental trends observed are high conductivity under forward bias conditions and high impedance first, and then electric field enhanced (EFE) water dissociation for high enough applied voltages, under reverse bias conditions. The forward bias measurements can contribute to a better knowledge of some of the transport parameters entering also in the reverse biased membrane. Comparison of…