Search results for "Main"

Problem Transformation Methods with Distance-Based Learning for Multi-Target Regression

2020

Multi-target regression is a special subset of supervised machine learning problems. Problem transformation methods are used in the field to improve the performance of basic methods. The purpose of this article is to test the use of recently popularized distance-based methods, the minimal learning machine (MLM) and the extreme minimal learning machine (EMLM), in problem transformation. The main advantage of the full data variants of these methods is the lack of any meta-parameter. The experimental results for the MLM and EMLM show promising potential, emphasizing the utility of the problem transformation especially with the EMLM. peerReviewed

Il primo concorso per il Palazzo di Giustizia a Roma del 1884. Ricostruzione critica del progetto di Ernesto Basile

2019

1. Breve descrizione dell’oggetto di studio Il concorso del Palazzo di Giustizia di Roma si svolge in quattro fasi svolte tra il 1884 e il 1887. Il progetto per il primo concorso, del 1884, redatto dall’allora giovanissimo Ernesto Basile (Palermo 1857-1932), rivela una grande perizia progettuale che trasforma il complesso programma funzionale in un austero edificio in stile neofiorentino. I disegni originari dell’opera, non realizzata, conservati presso la Dotazione Basile del Dipartimento di Architettura dell’Università di Palermo, sono stati oggetto di studio propedeutico alle fasi di analisi, interpretazione e ricostruzione congetturale del modello digitale. 2. Stato dell’arte e riferime…

Computational aspects in thermoelasticity by the symmetric boundary element method

2008

Evaluation of web reinforcements in prestressed concrete box girders through shear-transverse bending domains

2020

In concrete box girders, the amount and distribution of reinforcements in the webs have to be estimated considering the local effects due to eccentric external loads and cross-sectional distortion and not only the global effect due to the resultant forces of a longitudinal analysis: shear, torsion and bending. This work presents an analytical model that allows designers to take into account the interaction of all these effects, global and local, for the determination of the reinforcements. The model is based on the theory of stress fields and it has been compared to a 3D finite element analysis, in order to validate the interaction domains. The results show how the proposed analytical mode…

De-naturalizing the “predatory”: A study of “bogus” publications at public sector universities in Pakistan

2022

Predatory publishing has recently emerged as a menace in academia. University professors and researchers often exploit this practice for their economic gains and institutional prestige. The present study investigates such existing predatory publishing practices in Pakistani public sector universities using Bourdieu’s (1991) concept of symbolic violence. For this purpose, we analyzed 495 articles published by 50 university professors in the social sciences and humanities over the period 2017-2021. We also conducted semi-structured interviews with 20 postgraduate students to gather their perspectives on publishing practices. The study shows that 69% of the sample papers were published in pred…

Applying Semiautomatic Generation of Conceptual Models to Decision Support Systems Domain

2009

This paper presents a decision support system specification in the form of business use cases and a stereotyped conceptual model based on the specification. The use cases are based on generic user requirements and address cognitive biases. The specification can be used to set fixed and common terms among the project participants. Semiautomatic generation of the conceptual model is demonstrated with mixed results. While there are some shortcomings in the parsing and the result is dependent on the phrasing conventions used in the use cases, the conceptual model highlights the most essential entities in the domain and provides a base for further development phases. peerReviewed

Un bassin extensif formé pendant la fonte de la calotte glaciaire hirnantienne : le bassin ordovico-silurien de Kandi (Nord Bénin, Sud Niger)

2006

Le long de la bordure occidentale du bassin de Kandi, la sédimentation détritique continentale de base, correspondant à la formation de Wéré, est préservée dans des paléovallées limitées par des failles d'orientation moyenne N20°E, héritées de l'orogenèse panafricaine. Le remplissage sédimentaire de ces paléovallées est représenté par des dépôts conglomératiques et bréchiques de tills glaciaires marquant la base de la série, évoluant verticalement et latéralement vers l'Est à des grès fluviatiles. Ces dépôts continentaux, d'âge supposé ordovicien supérieur, passent verticalement à des grès tidaux et des grès et siltites subtidaux de la Formation de Kandi, d'âge ordovicien terminal à silurie…

The Synthesis of Quinoline‐based Tin Complexes with Pendant Schiff Bases

2019

Whilst pursuing the synthetic utility of quinoline‐based tin complexes, Me2Sn(Quin‐NO2)2 (1) and Ph2Sn(Quin‐NO2)2 (2) (Quin‐NO2 = 5‐nitroquinolino‐8‐oate) were synthesized bearing coordinatively inert nitro groups. Conventional reduction methodologies successfully converted 1 to Me2Sn(Quin‐NH2)2 (3) and 2 to Ph2Sn(Quin‐NH2)2 (4) (Quin‐NH2 = 5‐aminoquinolino‐8‐oate). The synthetically useful amine groups proved difficult to exploit in the presence of the central tin atom, however, a complete Schiff base functionalized Sn complex of the dimethyltin pro‐ligand Me2Sn(Quin‐py)2 (6) was successfully synthesized from 5‐[(pyridin‐2‐ylmethylene)amino]quinolin‐8‐ol (HQuin‐py; 5) in good yield via an …

Ponnistelujen ja palkkioiden epäsuhdan sekä ylisitoutuneisuuden yhteys työn intohimoon

2017

Tutkimuksen tarkoituksena oli lisätä tietoa työssä ilmenevien ponnistelujen ja palkkioiden epäsuhdan sekä ylisitoutuneisuuden yhteyksistä kahteen erilaiseen työn intohimoon: harmoniseen ja pakonomaiseen. Tutkimus kohdistui 270 suomalaiseen toimihenkilöön. Tutkittavista 220 oli miehiä (81.5%) ja tutkittavien keski-ikä oli 42 vuotta (kh 3.3, vaihteluväli 34—47). Hierarkkisen lineaarisen regressioanalyysin tulokset osoittivat, että ponnistelujen ja palkkioiden epäsuhta selitti korkeaa harmonista työn intohimoa. Ylisitoutuneisuus selitti vähäistä harmonista työn intohimoa ja korkeaa pakonomaista työn intohimoa. Ylisitoutuneisuus ei muuntanut ponnistelujen ja palkkioiden epäsuhdan yhteyttä kumpa…

Genèse et mémoires des randonnées littéraires

2018

Depuis les années 1980, les randonnées littéraires autour d’écrivains sont associées à des lectures de romans en vue d’entretenir la vitalité d’une œuvre dans une perspective de valorisation. Si les mémoires collectives sont longtemps restées l’apanage des ethnologues, les maisons d’écrivains sont les premières institutions à développer un type d’itinéraires touristiques en lien avec les politiques locales. Utilisant une approche basée sur les ressources territoriales, il s’agit de revenir sur l’émergence des randonnées littéraires consacrées à Jean Giono et de resituer cette démarche dans son articulation avec l’offre touristique régionale. La célébration de cet auteur se concentre aujourd…