Search results for "RIZ"
showing 10 items of 9613 documents
Understanding beginners' mistakes with Haskell
2015
AbstractThis article presents an overview of student difficulties in an introductory functional programming (FP) course taught in Haskell. The motivation for this study stems from our belief that many student difficulties can be alleviated by understanding the underlying causes of errors and by modifying the educational approach and, possibly, the teaching language accordingly. We analyze students' exercise submissions and categorize student errors according to compiler error messages and then manually according to the observed underlying cause. Our study complements earlier studies on the topic by applying computer and manual analysis while focusing on providing descriptive statistics of d…
Reduced Order Models for Pricing American Options under Stochastic Volatility and Jump-diffusion Models
2016
American options can be priced by solving linear complementary problems (LCPs) with parabolic partial(-integro) differential operators under stochastic volatility and jump-diffusion models like Heston, Merton, and Bates models. These operators are discretized using finite difference methods leading to a so-called full order model (FOM). Here reduced order models (ROMs) are derived employing proper orthogonal decomposition (POD) and non negative matrix factorization (NNMF) in order to make pricing much faster within a given model parameter variation range. The numerical experiments demonstrate orders of magnitude faster pricing with ROMs. peerReviewed
Synchronous R-NSGA-II: An Extended Preference-Based Evolutionary Algorithm for Multi-Objective Optimization
2015
Classical evolutionary multi-objective optimization algorithms aim at finding an approx- imation of the entire set of Pareto optimal solutions. By considering the preferences of a decision maker within evolutionary multi-objective optimization algorithms, it is possible to focus the search only on those parts of the Pareto front that satisfy his/her preferences. In this paper, an extended preference-based evolutionary algorithm has been proposed for solving multi-objective optimiza- tion problems. Here, concepts from an interactive synchronous NIMBUS method are borrowed and combined with the R-NSGA-II algorithm. The proposed synchronous R-NSGA-II algorithm uses preference information provid…
Automatic dynamic texture segmentation using local descriptors and optical flow
2012
A dynamic texture (DT) is an extension of the texture to the temporal domain. How to segment a DT is a challenging problem. In this paper, we address the problem of segmenting a DT into disjoint regions. A DT might be different from its spatial mode (i.e., appearance) and/or temporal mode (i.e., motion field). To this end, we develop a framework based on the appearance and motion modes. For the appearance mode, we use a new local spatial texture descriptor to describe the spatial mode of the DT; for the motion mode, we use the optical flow and the local temporal texture descriptor to represent the temporal variations of the DT. In addition, for the optical flow, we use the histogram of orie…
One-pot synthesis and characterization of subnanometre-size benzotriazolate protected copper clusters
2012
A simple one-pot method for the preparation of subnanometre-size benzotriazolate (BTA) protected copper clusters, Cu(n)BTA(m), is reported. The clusters were analyzed by optical and infrared spectroscopy, mass spectrometry and transmission electron microscopy together with computational methods. We suggest a structural motif where the copper core of the Cu(n)BTA(m) clusters is protected by BTA-Cu(i)-BTA units.
Reconsidering passivity and activity in children’s digital play
2016
The discussion around children’s digital game culture has resulted in two contradictory images of children: the passive, antisocial children uncritically and mechanically consuming digital game content and the active, social children creatively using and interacting with digital game content. Our aim is to examine how these seemingly contradictory ideas of “active” and “passive” children could be considered. By means of empirical examples of children playing digital dress-up and makeover games, we will point out that for the successful use of these concepts, they need to be thoroughly contextualized. By discussing the context and referent of activity and passivity, it is possible to overcom…
Luovuuden dispositiivi, sukupuoli ja taiteellisen työn prekarisoituminen
2017

 
 
 Dispositif of creativity, gender and the precarisation of artistic work
 The aim of this article is to open up theoretical perspectives to the research of the status of the artists and especially on its gender analysis. My principal points of references are the writings of a British cultural theorist Angela McRobbie and her concepts of disposi- tif of creativity and postfeminist sexual contract. The Foucauldian concept dispositif of creativity is used to illustrate how the features of artistic working conditions are in uenced by the wider and creativity-emphasizing current of changes taking place in the general sphere of production, therefore making the working con…
"-society is changing and, if divorce is introduced, it will merely be a reflection of those changing values in our society-" : the changes in percep…
2017
Vuonna 1995 Irlannin tasavallan hallitus päätti pitää jo toistamiseen kansanäänestyksen avioeron laillistamisesta. Ensimmäistä kertaa kansanäänestys oli pidetty asian tiimoilta vuonna 1986. Tällöin lakiehdotus ei mennyt läpi yli 60 % äänestäessä sitä vastaan. Vuonna 1995 tilanne oli kuitenkin toinen, ja lakiehdotus meni läpi vajaalla 9 000 äänellä. Irlanti oli ollut hyvin konservatiivinen valtio, jonka perustuslaki oli taannut valtion suojelevan perhettä yhteiskunnan tärkeimpänä instituutiona. Tämä johtui valtion ja katolilaisen kirkon hyvin tiiviistä suhteesta. Katolilainen kirkko oli varmistanut asemansa Irlannissa vuonna 1937, jolloin sen erikoisasema kirjattiin perustuslakiin. Tätä ei m…
Tecniche antisismiche nella Sicilia di età moderna
2012
Nella Sicilia d'età moderna ricorrono spesso esempi dove le ragioni strutturali, in relazione ai dibattiti incentrati sugli effetti disastrosi di numerosi eventi sismici che hanno interessato l'isola in particolare dal Cinquecento al Settecento, condizionano e spiegano alcune scelte formali attuate nell'architettura monumentale.
TECNOLOGIE E STRATEGIE PER LA VALORIZZAZIONE DEI BENI CULTURALI E ARCHEOLOGICI - Technologies et stratégies pour la promotion du patrimoine culturel …
2014
I beni archeologici costituiscono un capitale di valore strutturato con propri elementi distintivi di identità e di autenticità. Valorizzare queste importanti risorse del territorio, significa potenziarne la conservazione e la tutela ed al contempo incrementarne la promozione e la fruizione responsabile. In questo processo di produzione di valore, il contributo della disciplina tecnologica si pone in modo propositivo e strategico: sia in termini di diffusione della conoscenza, potenziando l’interpretazione materiale ed immateriale del bene archeologico, attraverso l’uso di strumenti evoluti per l’analisi del reperto archeologico; sia nel miglioramento dell’utilizzazione pubblica del bene, n…