Search results for "object"
showing 10 items of 1888 documents
Els epítets dels artistes baixmedievals al servei dels poders reial i municipal
2021
Aquest article estudia els adjectius que van rebre els artistes que treballaren per al rei i per a les elits ciutadanes en els territoris de parla catalana durant els segles XIV i XV. En particular, se n’hi examinen dos: apte i subtil. Les notícies exhumades per uns altres especialistes fins al moment permeten comprendre’ls en el propi context documental. Ací es compara el seu significat amb uns altres exemples de la literatura baixmedieval de la Corona d’Aragó i es du a terme una aproximació històrica com a paraules que al·ludien a la perícia de l’artista i que van ser escollides amb una finalitat. Participaren i repercutiren, per tant, en la relació històrica de l’artista amb el client, …
Contact formation in random networks of elongated objects
2014
The effect of steric hindrance is an important aspect of granular packings as it gives rise to, e.g., limitations on the densities of ordered and disordered packings, both of which are essentially defined by the geometry of the constituents. Here we focus on random packing of rods via deposition and their distributions of contact number and segment length. Such statistical properties are relevant for mechanical properties of the structures, but the (quite large) steric effects on them have not been addressed in previous studies. We therefore develop a theory that describes the statistical properties of rod packings, while taking into account that the deposited rods cannot overlap and thus i…
Col : A Data Collection Protocol for Vanet
2012
International audience; In this paper, we present a protocol to collect data within a vehicular ad hoc network (VANET). In spite of the intrinsic dynamic of such network, our protocol simultaneously offers three relevant properties: (1) It allows any vehicle to collect data beyond its direct neighborhood (i.e., vehicles within direct communication range) using vehicle-to-vehicle communications only (i.e., the infrastructure is not required); (2) It tolerates possible network partitions; (3) It works on demand and stops when the data collection is achieved. To the best of our knowledge, this is the first collect protocol having these three characteristics. All that is chiefly obtained thanks…
Data-Driven Interactive Multiobjective Optimization Using a Cluster-Based Surrogate in a Discrete Decision Space
2019
In this paper, a clustering based surrogate is proposed to be used in offline data-driven multiobjective optimization to reduce the size of the optimization problem in the decision space. The surrogate is combined with an interactive multiobjective optimization approach and it is applied to forest management planning with promising results. peerReviewed
A data-driven surrogate-assisted evolutionary algorithm applied to a many-objective blast furnace optimization problem
2017
A new data-driven reference vector-guided evolutionary algorithm has been successfully implemented to construct surrogate models for various objectives pertinent to an industrial blast furnace. A total of eight objectives have been modeled using the operational data of the furnace using 12 process variables identified through a principal component analysis and optimized simultaneously. The capability of this algorithm to handle a large number of objectives, which has been lacking earlier, results in a more efficient setting of the operational parameters of the furnace, leading to a precisely optimized hot metal production process. peerReviewed
Data-driven Interactive Multiobjective Optimization : Challenges and a Generic Multi-agent Architecture
2020
In many decision making problems, a decision maker needs computer support in finding a good compromise between multiple conflicting objectives that need to be optimized simultaneously. Interactive multiobjective optimization methods have a lot of potential for solving such problems. However, the growth of complexity in problem formulations and the abundance of data bring new challenges to be addressed by decision makers and method developers. On the other hand, advances in the field of artificial intelligence provide opportunities in this respect. We identify challenges and propose directions of addressing them in interactive multiobjective optimization methods with the help of multiple int…
On approaches for solving computationally expensive multiobjective optimization problems
2016
In this thesis, we consider solving computationally expensive multiobjective optimization problems that take into account the preferences of a decision maker (DM). The aim is to support the DM in identifying the most preferred solution for problems that have several conflicting objectives and when the evaluation of the candidate solutions is time consuming. This is conducted by replacing computationally expensive functions with computationally inexpensive functions, known as surrogates. First, based on a literature survey, we introduce two frameworks, i.e., a sequential and an adaptive framework, based on which surrogate-based methods are classified and compared. We then identify relevant cha…
Il futuro del costituzionalismo (se il costituzionalismo ha un futuro)
2022
Il costituzionalismo è in crisi? Se con questa ci riferiamo soltanto a un discorso giuridico improntato al linguaggio dei diritti e a un certo assetto tra poteri che valorizza il potere giudiziario a discapito del legislativo e dell’esecutivo, allora non si può che rispondere negativamente. Se invece consideriamo parte integrante del costituzionalismo l’individualismo di matrice illuminista e la convinzione che esista uno zoccolo duro di valori morali universalmente condivisi sui quali edificare un futuro di pace e prosperità dell’umanità, allora è difficile negare la crisi del costituzionalismo. Is constitutionalism in crisis? If by ‘constitutionalism’ we only refer to a legal discourse gr…
Tuulimyllyjä vastaan? : ei enää tohtorikoulutettavia
2019
Pääkirjoitus Editorial
Cietsirdīga izturēšanās pret dzīvniekiem
2019
Maģistra darba tēma ir “Cietsirdīga izturēšanās pret dzīvniekiem”. Darbā tiek pētīti noziedzīgi nodarījumi, kas ir vērsti pret dzīvniekiem. Aplūkota apdraudējamā objekta – dzīvnieks – rašanās vēsture, sākot no 1903.gada līdz mūsdienām. Aplūkoti cietsirdīgās izturēšanās pret dzīvniekiem objektīvās puses elementi, kas ir nepieciešami, lai iestātos kriminālatbildība. Darbā tiek aplūkota cietsirdīgas izturēšanās pret dzīvniekiem pamatsastāva un kvalificējošo pazīmju analīze. Aplūkota cietsirdīga izturēšanās pret dzīvniekiem atbildība, tās atšķirības gan no administratīvā pārkāpuma, gan vides tiesību aizsardzības spektra un starptautiskā regulējuma dzīvnieku aizsardzības jomā. Darbā tiek apskatī…