Search results for " Models"
showing 10 items of 4240 documents
Early Warning Systems and Emergency Plan in Urban Areas: A Study Case
2012
''Dual'' gravity: Using spatial econometrics to control for multilateral resistance.
2007
We propose a quantity-based `dual' version of the gravity equation that yields an estimating equation with both cross-sectional interdependence and spatially lagged error terms. Such an equation can be concisely estimated using spatial econometric techniques. We illustrate this methodology by applying it to the Canada-U.S. data set used previously, among others, by Anderson and van Wincoop (2003) and Feenstra (2002, 2004). Our key result is to show that controlling directly for spatial interdependence across trade flows, as suggested by theory, significantly reduces border effects because it captures `multilateral resistance'. Using a spatial autoregressive moving average specification, we …
Mechanobiological computational model for the development and formation of synovial joints
2019
El desarrollo de las articulaciones sinoviales se debe a diferentes factores genéticos, bioquímicos y mecánicos. Comienza en el brote de las extremidades, que tienen una masa ininterrumpida de células mesenquimales dentro de su núcleo, el blastema esquelético. La mayoría de estas células blastemales se diferencian en condrocitos; sin embargo, algunas de estas células permanecen, sin diferenciar, en el sitio de la futura articulación (interzona). La separación de los rudimentos ocurre con el proceso de cavitación dentro de la interzona. Después de la cavitación, se produce la morfogénesis articular y el hueso toma su forma final. Una vez finalizado el período embrionario, la articulación sin…
Rodent host population dynamics drive zoonotic Lyme Borreliosis and Orthohantavirus infections in humans in Northern Europe
2021
Zoonotic diseases, caused by pathogens transmitted between other vertebrate animals and humans, pose a major risk to human health. Rodents are important reservoir hosts for many zoonotic pathogens, and rodent population dynamics affect the infection dynamics of rodent-borne diseases, such as diseases caused by hantaviruses. However, the role of rodent population dynamics in determining the infection dynamics of rodent-associated tick-borne diseases, such as Lyme borreliosis (LB), caused by Borrelia burgdorferi sensu lato bacteria, have gained limited attention in Northern Europe, despite the multiannual abundance fluctuations, the so-called vole cycles, that characterise rodent population d…
Chaos and its Degradation-Promoting-Based Control in an Antithetic Integral Feedback Circuit
2022
This letter deals with a novel variant of antithetic integral feedback controller (AIFC) motifs which can feature robust perfect adaptation, a pervasive (desired) ability in natural (synthetic) biomolecular circuits, when coupled with a wide class of process networks to be regulated. Using the separation of timescales in the proposed kind of AIFC, here we find a reducedorder controller that captures the governing slow part of the original solutions under suitable assumptions. Inspired by R(ossler systems, we then make use of such a simpler controller to show that the antithetic circuit can exhibit chaotic behaviors with strange attractors, where the bifurcation from a homeostatic state to c…
Talouskasvu Suomessa : aluetaloudellinen tarkastelu
2000
Ketterät sopimustyypit ja hinnoittelumallit julkisissa tietojärjestelmähankinnoissa
2017
Agile contracts and pricing models in public procurements of information systems. Process of public information system procurement has been overlooked in information system science. Especially empirical study of contract types and pricing models that support agile development has been neglected. The aim of this research is to fill this research gap. The research question is how agile contracts and pricing models can be applied in public procurements of information systems. This research investigates what ways and practices for implementing agile contracts and pricing models exist in public sector. The approach of this research is qualitative. The research question will be answered by analyz…
Physical activity and sedentary time in relation to academic achievement in children
2017
Objectives To investigate the independent and combined associations of objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary time (ST) with reading and arithmetic skills. Design Cross-sectional/prospective. Methods Participants were 89 boys and 69 girls aged 6–8 years. MVPA and ST were measured using a combined heart rate and movement sensor and body fat percentage by dual-energy X-ray absorptiometry in Grade 1. Reading fluency, reading comprehension, and arithmetic skills were assessed using standardized tests in Grades 1–3. The data were analyzed using linear regression analyses and analyses of covariance with repeated measures. Results In boys, MVPA was directl…
Emotions represented and induced by music : the role of individual differences
2012
Ramy i modele jakości informacji - próba porównania
2016
Celem artykułu było przedstawienie i porównanie najważniejszych ram i modeli jakości informacji wyróżnionych w literaturze przedmiotu. Spośród licznych modeli zaprezentowano trzy: model R Wanga, model B Kahna, D.Strong i R. Wanga oraz model M. Epplera. Pokazano, że porównanie modeli i ram jakości informacji jest możliwe na podstawie zestawu kryteriów obejmujących: ogólność, odpowiedniość, elastyczność i kompletność. Wykazano, że biorąc pod uwagę wymienione kryteria, za najlepszy należy uznać model ram jakości przedstawiony przez M. Epplera. Jednak i ten model nie spełnia wszystkich tych kryteriów, gdyż nie jest kompletny pod względem prezentacji relacji między atrybutami jakości informacji,…