Search results for "Limite"
showing 10 items of 260 documents
The Uncertain Role of Banks’ Corporate Governance in Systemic Risk Regulation
2011
This paper examines how corporate governance reform of banks relates to systemic risk. Although there has been substantial emphasis on the importance of corporate governance of banks, it is not entirely clear how this enterprise relates to the goal of financial stability. The first part of the paper differentiates between kinds of risk that arise from the structure of the firm, such as shareholder ownership, limited liability and the separation between control and ownership, and kinds of risk that arise from interactions at the systemic level. It highlights why the risk-taking of banks presents, in many respects, a special case not only because of the structure of their business but also becau…
Some Detrimental Effects of Negative Mood on Individuals' Ability to Solve Resource Dilemmas
1991
This research examined the effects of induced mood on subjects' problem-solving behavior In an initial study, an experimenter induced one of three emotions (happiness, sadness, or anger) or no emotion in subjects. Shortly thereafter a second experimenter asked each subject to solve a resource dilemma problem. Subjects in the sad and angry mood conditions were less successful (i.e., they were more likely to deplete limited resources, and they achieved less profit) than subjects in the happy or neutral mood condition. Performance of subjects in positive moods did not differ from that of subjects in neutral moods. In a second study, the effect of a sad mood leading to less success than a neut…
Switching spatial scale reveals dominance-dependent social foraging tactics in a wild primate.
2017
When foraging in a social group, individuals are faced with the choice of sampling their environment directly or exploiting the discoveries of others. The evolutionary dynamics of this trade-off have been explored mathematically through the producer-scrounger game, which has highlighted socially exploitative behaviours as a major potential cost of group living. However, our understanding of the tight interplay that can exist between social dominance and scrounging behaviour is limited. To date, only two theoretical studies have explored this relationship systematically, demonstrating that because scrounging requires joining a competitor at a resource, it should become exclusive to high-rank…
An examination of the views of young people in the Romanian residential care system regarding their relationship with biological family members and t…
2017
ABSTRACTThis paper reports findings from research conducted in six Romanian residential care homes. The aim of the paper is to examine the views held by young people, currently living in residential care, about the importance of their biological families and the option and challenge of reintegration. The data reflect the ideas and perspectives of 44 young people captured through a narrative interview approach using social mapping activities. The results indicate that most children and young people know at least one birth parent and maintain contact on their own initiative; most do not place a high level of importance on such relationships which are generally characterised by lack of confide…
A limited feedback scheme based on spatially correlated channels for coordinated multipoint systems
2012
High spectral efficiency can be achieved in the downlink of multi-antenna coordinated multi-point systems provided that the multiuser interference is appropriately managed at the transmitter side. For this sake, downlink channel information needs to be sent back by the users, thus reducing the rate available at the uplink channel. The amount and type of feedback information required has been extensively studied and many limited feedback schemes have been proposed lately. A common pattern to all of them is that achieving low rates of feedback information is possible at the cost of increasing complexity at the user side and, sometimes, assuming that some statistics of the channel are known. I…
Stochastic model for the epitaxial growth of two-dimensional islands in the submonolayer regime
2016
The diffusion-based growth of islands composed of clusters of metal atoms on a substrate is considered in the aggregation regime. A stochastic approach is proposed to describe the dynamics of island growth based on a Langevin equation with multiplicative noise. The distribution of island sizes, obtained as a solution of the corresponding Fokker-Planck equation, is derived. The time-dependence of island growth on its fractal dimension is analysed. The effect of mobility of the small islands on the growth of large islands is considered. Numerical simulations are in a good agreement with theoretical results.
Three Essays in Microeconometrics
2020
This dissertation examines three distinct issues using microeconometric techniques. The first two chapters fall in the realm of discrete choice models and try to make allowance for limited attention. The third chapter focuses on firm behavior and investigates the impact of ownership concentration on productivity. Chapter 1 predominantly builds on the consideration capacity model in Dardanoni, Manzini, Mariotti and Tyson (2019). In the attempt to behavioralize rational choice theory, their model identifies the distribution of cognitive characteristics in a population of agents who are observed choosing repeatedly from a single menu. By exploiting algebraic arguments, we first generalize the …
Calcul direct d'une tesselation de la surface limite pour les schémas de subdivision uniformes
2017
International audience; Le peu d'utilisation des surfaces de subdivision dans les systèmes CAO est principalement lié au fait que la surface est le plus souvent seulement approchée par des niveaux de raffinement successifs, ce qui induit un manque de pré-cision. De plus, il est difficile d'intégrer la représentation des surfaces de subdivision dans le noyau géométrique (ensemble de primitives et d'outils) des applications CAO. C'est dans ce but que nous décrirons un formalisme général de construction de surfaces de subdivision basé sur les Systèmes Itérés de Fonctions. Le principal apport est que toutes les surfaces de subdivision classiques sont gérées de la même manière quel que soit le s…
Strengthening the Social Capital in Rural Areas Through the Rural Renewal Program. A Case Study of Opole Voivodeship
2019
Opinions regarding the limited resources of the social capital in Poland are quite common. The country is particularly often referred to as a place with a lower level of organization of its inhabitants. Therefore, a change is necessary towards a greater activation of local communities and creation of social organizations aimed at solving local problems. The effective implementation of development programs may provide considerable support for the introduction of these changes. The Rural Renewal Program may serve as a particularly good example in this respect because the local community is not only the beneficiary, but mainly the initiator of the actions taken.
Acorn Ants May Create and Use Two Entrances to the Nest Cavity
2021
Many ant species construct large nests that are inhabited by numerous workers, but other species dwell in ready-for-use cavities and live in small colonies. Ants of the genus Temnothorax inhabit small cavities, e.g., in acorns, twigs, and under rocks. Although a preference for nest sites with a narrower entrance is known, recent studies have shown that they also use cavities with wider entrances and may modify the size of such entrances. As good cavities for nest sites are a limited resource, the possibility to modify a potential nest site, including a reduction in the size of the hole, should be a favorable matter for the ants. Through field and laboratory experiments, I studied the acorn …