Search results for "Arity"

“Generalist” Journals between Dissemination of Economics and Regime Propaganda

2019

Early in the 20th, generalist journals – a kind of press which had its major diffusion in the nineteenth century – continue to accommodate the contributions of economists offering a specific debating space. However, with the affirmation of fascist ideology, generalist periodicals progressively ceased to exist or to host economists’ articles. Thus, the main object of this research consists in clarifying what could be intended by “generalism” and in relation to which events and ideological pressures it disappeared as a different way to do journalism in a dialectic interplay with specialization. The paper reviews the panorama of generalist journals focusing on the impact of the Fascist regime …

Combining feature extraction and expansion to improve classification based similarity learning

2017

Abstract Metric learning has been shown to outperform standard classification based similarity learning in a number of different contexts. In this paper, we show that the performance of classification similarity learning strongly depends on the data format used to learn the model. We then present an Enriched Classification Similarity Learning method that follows a hybrid approach that combines both feature extraction and feature expansion. In particular, we propose a data transformation and the use of a set of standard distances to supplement the information provided by the feature vectors of the training samples. The method is compared to state-of-the-art feature extraction and metric lear…

On the canonical algebra of smoothings of sandwiched singularities

2004

Application of Operator Splitting Methods in Finance

2016

Financial derivatives pricing aims to find the fair value of a financial contract on an underlying asset. Here we consider option pricing in the partial differential equations framework. The contemporary models lead to one-dimensional or multidimensional parabolic problems of the convection-diffusion type and generalizations thereof. An overview of various operator splitting methods is presented for the efficient numerical solution of these problems.

Modeling the Dynamics of a Financial Index after a Crash

2004

Supply and demand are perhaps the most fundamental concepts in economics. In a financial market they reflects the orders of the agents to buy or sell a given asset. In turn the fluctuations of supply and demand influence the dynamics of the price of an asset, as, for example, a stock or a financial index. Therefore the dynamics of the price of an asset is affected by the actions and of the beliefs of the agents. It is known that the dynamics of the price of an asset is far from simple, Several stylized facts has been empirically discovered such as, for example, the fat tails in the return distribution and the clustered volatility. These stylized facts has been detected by considering long t…

Comparative Analysis of Terminology and Alternative Financing Types on the Example of Estonia

2021

Alternative financing has gained great popularity since new market players appeared to offer new types of financing in Estonia as well as in other countries of the world. The extent of the alternative financing penetration across the population in Estonia was second highest in European countries after the United Kingdom, in 2016. In recent years, the Estonian market of alternative financing has grown and transformed, taking different complicated forms. The research therefore reveals major types of financing process of the licensed alternative financing providers of Estonia, highlighting its crucial elements, namely, possessors of funds, legal status of fundraising originators and addressees…

A methodology for assessing the effect of correlations among muscle synergy activations on task-discriminating information

2013

Delis, Ioannis | Berret, Bastien | Pozzo, Thierry | Panzeri, Stefano; International audience; ''Muscle synergies have been hypothesized to be the building blocks used by the central nervous system to generate movement. According to this hypothesis, the accomplishment of various motor tasks relies on the ability of the motor system to recruit a small set of synergies on a single-trial basis and combine them in a task-dependent manner. It is conceivable that this requires a fine tuning of the trial-to-trial relationships between the synergy activations. Here we develop an analytical methodology to address the nature and functional role of trial-to-trial correlations between synergy activation…

Stressing sequence of steel cable-stayed bridges built by cantilevering

2015

The construction of cable-stayed bridges by cantilevering implies several changes of geometry, stress and strain patterns during the assemblage of segments. The main target to be satisfied in the construction process is the achievement of the required final geometry and of a convenient state of stress for self-weight and sustained loads. The sequence of stay stressing and the values of prestressing forces at each stage of segment assembling have the main role for reaching the desired result of design, due to the large redundancy of cable-stayed structures.Among the different procedures proposed in the literature for initial cable force determination, the Partial Elastic Scheme (PES) Method …

PRIMO experiment: study-action on the dynamics of the creation of new enterprises and jobs in the Social and Solidarity Economy

2016

A research-action was carried out in 2015 and 2016 by the Regional Chamber of the Social and Solidarity Economy (CRESS) of Franche-Comté, accompanied by public partners, scientific and from the field of support, with the aim of better understand the dynamics of the creation of SSE enterprises in the regions, identified by the criterion of employment. The results of the survey component, obtained through the Catalyse® method (see http://www.acokima.org), make it possible to establish a typology of primary-employer structures. In particular, they show that the ability of a territory to "generate" new employers in the ESS is primarily linked to the existing voluntary sector and to the possibil…

Three-dimensional rigid motion estimation using genetic algorithms from an image sequence in an active stereo vision system

2004

This paper proposes a method for estimating the three-dimensional (3D) rigid motion parameters from an image sequence of a moving object. The 3D surface measurement is achieved using an active stereovision system composed of a camera and a light projector, which illuminates the objects to be analyzed by a pyramid-shaped laser beam. By associating the laser rays with the spots in the two-dimensional image, the 3D points corresponding to these spots are reconstructed. Each image of the sequence provides a set of 3D points, which is modeled by a B-spline surface. Therefore, estimating the 3D motion between two images of the sequence boils down to matching two B-spline surfaces. We consider the…