Search results for "Model"
showing 10 items of 24058 documents
Cost that is Directly Incurred as a Result of Operating the Train Service on the 1520 mm Rail with Primarily Freight Transportation
2016
AbstractUnder the Directive 2012/34/EU (21 November 2012) “the charges for … [rail] infrastructure … shall be set at the cost that is directly incurred as a result of operating the train service”. This charging rule is new for Baltic States’ railways, where due to the favorable geographic position a full cost application without detalization was possible. Although, a big number of relevant studies on the issue was made in EU, all of them covered only 1435mm railways with primarily passenger transportation. This study has been made in order to understand the impact of train operating on 1520mm rail infrastructure with primarily freight transportation.A gradual model of infrastructure chargin…
A physically-based and distributed tool for modeling the hydrological and mechanical processes of shallow landslides
2015
This work presents the capabilities of a model, i.e. the tRIBS-VEGGIE-Landslide, in two different versions, i.e. developed within a probabilistic framework and coupled with a root cohesion module. The probabilistic model treats geotechnical and soil retention curve parameters as random variables across the basin and estimates theoretical probability distributions of slope stability and the associated “factor of safety” commonly used to describe the occurrence of shallow landslides. The derived distributions are used to obtain the spatiotemporal dynamics of probability of failure, conditioned on soil moisture dynamics at each watershed location. The framework has been tested in the Luquillo …
Generalized wave propagation problems and discrete exterior calculus
2018
We introduce a general class of second-order boundary value problems unifying application areas such as acoustics, electromagnetism, elastodynamics, quantum mechanics, and so on, into a single framework. This also enables us to solve wave propagation problems very efficiently with a single software system. The solution method precisely follows the conservation laws in finite-dimensional systems, whereas the constitutive relations are imposed approximately. We employ discrete exterior calculus for the spatial discretization, use natural crystal structures for three-dimensional meshing, and derive a “discrete Hodge” adapted to harmonic wave. The numerical experiments indicate that the cumulat…
Global Estimation of Biophysical Variables from Google Earth Engine Platform
2018
This paper proposes a processing chain for the derivation of global Leaf Area Index (LAI), Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), Fraction Vegetation Cover (FVC), and Canopy water content (CWC) maps from 15-years of MODIS data exploiting the capabilities of the Google Earth Engine (GEE) cloud platform. The retrieval chain is based on a hybrid method inverting the PROSAIL radiative transfer model (RTM) with Random forests (RF) regression. A major feature of this work is the implementation of a retrieval chain exploiting the GEE capabilities using global and climate data records (CDR) of both MODIS surface reflectance and LAI/FAPAR datasets allowing the global estim…
Ensemble methods for ranking data with and without position weights
2020
The main goal of this Thesis is to build suitable Ensemble Methods for ranking data with weights assigned to the items’positions, in the cases of rankings with and without ties. The Thesis begins with the definition of a new rank correlation coefficient, able to take into account the importance of items’position. Inspired by the rank correlation coefficient, τ x , proposed by Emond and Mason (2002) for unweighted rankings and the weighted Kemeny distance proposed by García-Lapresta and Pérez-Román (2010), this work proposes τ x w , a new rank correlation coefficient corresponding to the weighted Kemeny distance. The new coefficient is analized analitically and empirically and represents the main…
Rappresentazioni tattili
2020
Sebbene molto spesso le persone con disabilità debbano accontentarsi di vivere parzialmente alcune esperienze, da diversi anni è aumentata l’attenzione dei siti museali verso la realizzazione di progetti e percorsi dedicati che consentano una fruizione tattile di opere e manufatti ai disabili visivi. Il contributo presenta due casi studio, che utilizzano modelli 3D per installazioni tattili. In presenza di deficit visivo, è importante rafforzare le facoltà percettive connettendo il tatto con i sensi residui e fornendo stimoli cognitivi diversi e paralleli. L’approccio multisensoriale, tattile e uditivo, realizzato grazie alla commistione tra modelli 3D e componenti elettroniche, favorisce l…
Italian University student evaluation of teaching: does it changes over time?
2010
This paper concerns the measurement of the Student Evaluation of Teaching (SET) by undergraduates. For almost 15 years Italian Universities have been monitoring that aspect, performing on students’ opinions about teaching, e.g. on teacher punctuality, clearness and willingness, and on suitability of the facility, logistics, and on course scheduling and managing. Each University carries out a survey with own procedures and through a questionnaire consisting of two set of items: a set of items equal for all Italian Universities, and a set of items built by each University. The survey basic aim is to gather information on teaching skill, educational goals, coordination among teachings, and ade…
Balancing food, activity and the dangers of sunlit nights
2019
Living in northern latitudes poses challenges to the animals that live in those habitats. The harsh environment provides a short breeding season where the sunlit summer nights provide little reprieve from visibility to predators and increased risk. In this paper, we tested the activity and food choice patterns of bank voles Myodes glareolus in early spring season, categorized by 18 h of daylight and 6 h of dusk in every day cycle. We found that territorial females showed a less predictable pattern of activity than males that were most active during the hours of dusk. The voles also showed preference to forage on high carbohydrate foods at sunset, while switching over to a more protein and f…
Effects of new logistics services on restaurants' business model and strategy
2016
The restaurant industry is present in every part of the world and has been a subject of significant interest for academic scholars. Despite being a more stable industry, technological innovations have started to reach restaurants as well. The purpose of this research is to study and analyze one of these innovations introduced to the full-service restaurant industry. Traditional delivery services in the restaurant industry have been acting as agents between restaurants and customers with the restaurants being in charge of the delivery. However, the food logistics service providers examined in this study offer their restaurant partners‟ new services such as control of the delivery process and…
Papel de la fosforilación de p27 en la serina 10 en la función endotelial y el remodelado vascular patológico
2015
El supresor tumoral p27 ha sido ampliamente implicado en multitud de procesos patológicos donde ejerce un papel protector debido a su acción antiproliferativa. Particularmente, a nivel cardiovascular, nuestro laboratorio ha demostrado que p27 protege frente al desarrollo de aterosclerosis en modelos murinos gracias a su función anti-proliferativa (1, 2). La regulación de p27 está fuertemente mediada por sus modificaciones postraduccionales, entre las que destaca su fosforilación en la serina 10 (principal modificación que sufre la proteína). Recientemente, nuestro laboratorio ha demostrado que la fosforilación de p27 en su Ser10 protege frente al desarrollo de aterosclerosis avanzada, incre…