Search results for "model."

Using the hierarchical modeling approach to derive spatial distribution of precipitation and temperature datasets. A case study for the area of Sicil…

2013

The interest for spatial interpolating climatic variables available by means of point measurements, as precipitation and temperature, arises from different needs, ranging from their usage for hydrological models to the reconstruction of climatic atlas of spatially distributed data. In some areas the spatial distribution of these variables can be related to the extremely variable morphology of the area. While simple deterministic interpolation methods usually produce just the spatial distribution of the variable of interest, implicitly relying on the spatial autocorrelation and manually tuning a few parameters, more complex statistical models, are able to derive the uncertainty associated wi…

Adaptive Methodology for Designing a Predictive Model of Cardiac Arrhythmia Symptoms Based on Cubic Neural Unit

2017

A cubic neural unit is a kind of a higher-order neural unit which can be used for prediction tasks among others, in the medical field. The example of the tasks includes monitoring cardiac behavior in real-time either for preemptive treatment, or for supporting a doctor to reach a more accurate diagnosis. We propose a predictive model which has been developed as an application in open source code with the aim to make it publicly accessible for research community and medical professionals and also to decrease the implementation cost. The proposed model uses sample-by-sample adaptation of the gradient descent method with error backpropagation. This paper presents an application of a cubic neur…

SUSTAINABLE MOBILITY: SIMULATION OF THE ADOPTION OF FUEL CELL ELECTRIC VEHICLES

2022

Computation of the regime configuration of a meandering stream

2004

Regime channel formation is a delicate adaptation to the imposed environmental conditions compatible with flow and sediment transport mechanisms. The present paper concerns the computation of the regime configuration of a meandering stream. It is supposed that the channel develops until it reaches the state of “final thermodynamic equilibrium”, where the ratio of the kinetic energy of the flow to its cross-sectional potential energy is minimum. An optimization procedure that allows the analysis of the regime channel formation is presented and it is checked using a real case.

Interactively Learning the Preferences of a Decision Maker in Multi-objective Optimization Utilizing Belief-rules

2020

Many real life problems can be modelled as multiobjective optimization problems. Such problems often consist of multiple conflicting objectives to be optimized simultaneously. Multiple optimal solutions exist to these problems, and a single solution cannot be said to be the best without preferences given by a domain expert. Preferences can be used to find satisfying solutions: optimal solutions, which best match the expert’s preferences. To model the preferences of the expert, and aid him/her in finding satisfying solutions, a novel method is proposed. The method utilizes machine learning combined with belief-rule based systems to adaptively train a belief rule based system to learn a domai…

L'effetto della tessitura interna sulle preferenze cognitive

2008

In questo lavoro vengono esplorati gli effetti della tessitura interna di un'immagine sulle preferenze cognitive relative alla simmetria percepita. A questo scopo è stato preparato un test su soggetti umani basato sulla identificazione della simmetria principale in una figura geometrica al variare della sua tessitura interna, i cui esiti sono stati comparati con l'analisi effettuata da un modello di ricerca della simmetria fuzzy che incorpora elementi di preferenza ricalcati sull'esperienza umana. Dai risultati ottenuti si può vedere come, in accordo con il modello gestaltico, la preferenza cognitiva relativa alla simmetria viene influenzata anche da fattori considerati secondari come la te…

Mobile game monetization

2015

Mitä rahallistamis menetelmiä on olemassa mobiilipeleille? Entä mitä täytyy ottaa huomioon sovellettaessa tiettyä rahallistamis menetelmää tiettyyn pelityyppiin? Tässä kandidaatintutkielmassa perehdytään siihen mitä mobiilipelit ovat, mikä on Apple App Store, millaisa eri pelityypepjä on, mitkä ovat eri rahallistamismenetelmät mobiilipeleille ja lopuksi rahallistamismenetelmiä käyttöönotettaessa huomioitavia asioita käsitellään luvun verran. Tukimustuloksena esitellään muutama potenttiaalinen rahallistamismenetelmä. Sekä tehdään selväksi että rahallistamismenetelmän valinta on riippuvainen pelistä. Erilaisilla peleillä ja rahallistamismenetelmillä on eri laatuvaatimukset. What are potential…

Numerical and Experimental Study of a Novel Concept for Hydraulically Controlled Negative Loads

2016

This paper presents a numerical and experimental investigation of a novel concept that eliminates oscillations in hydraulic systems containing a counterbalance valve in series with a pressure compensated flow supply. The concept utilizes a secondary circuit where a low-pass filtered value of the load pressure is generated and fed back to the compensator of the flow supply valve. The novel concept has been implemented on a single boom actuated by a cylinder. A nonlinear model of the system has been developed and an experimental verification shows good correspondence between the model and the real system. The model is used for a parameter study on the novel concept. From the study it is found…

Hard to catch: Experimental evidence supports evasive mimicry

2021

Most research on aposematism has focused on chemically defended prey, but the signalling difficulty of capture remains poorly explored. Similar to classical Batesian and Müllerian mimicry related to distastefulness, such ‘evasive aposematism' may also lead to convergence in warning colours, known as evasive mimicry. A prime candidate group for evasive mimicry areAdelphabutterflies, which are agile insects and show remarkable colour pattern convergence. We tested the ability of naive blue tits to learn to avoid and generalizeAdelphawing patterns associated with the difficulty of capture and compared their response to that of birds that learned to associate the same wing patterns with distast…

Examining pre-service teachers' Technological Pedagogical Content Knowledge as evolving knowledge domains : A longitudinal approach

2019

The aim of this study is to outline the development and changes in pre‐service teachers' technological pedagogical content knowledge (TPACK) assessments during the first 3 years in teacher education. Specifically, research was conducted at three measurement points over a 3‐year teacher education period. The target group consisted of pre‐service teachers (N = 148) from three Finnish universities. Results indicate a growth in confidence related to all TPACK areas during the research period. The strongest gains were in pedagogical content knowledge. In addition, the gains were larger in other areas related to pedagogical knowledge than areas related to technology or content knowledge. In areas…