Search results for "Clos"
showing 10 items of 1439 documents
Persistence of Asteroids After a Close Encounter
1999
We present here a first approximation to the planar circular restricted 2 + 2 problem. In this four body problem, we consider that the two secondaries do not affect the primaries but they do influence each other. It can be seen as a model for near collision orbits of two asteroids if the primaries are the Sun and Jupiter ([3], [5]). In particular, we analyze the values of the Jacobi constant of the two asteroids before and after the close approach.
The Influence of Adalimumab and Cyclosporine A on the Expression Profile of the Genes Related to TGFβ Signaling Pathways in Keratinocyte Cells Treate…
2020
Background. In the treatment of moderate to severe psoriasis, cyclosporine A (CsA) conventional therapy is used and biological, anti-cytokine treatment using, for example, anti-TNF drug—adalimumab. Aim. This study aimed at investigating the effect of CsA and adalimumab on the profile of mRNAs and protein expression associated with transforming growth factor β (TGFβ) pathways in human keratinocyte (HaCaT) culture previously exposed to lipopolysaccharide (LPS). Materials and Methods. HaCaT culture was exposed to 1 ng/ml LPS for 8 hours+8 μg/ml adalimumab for 2, 8, and 24 hours or 1 ng/ml LPS for 8 hours+100 ng/ml CsA for 2, 8, and 24 hours and compared to the control culture. Sulphorodamine B…
On the dynamics of the AB Doradus system
2006
We present an astrometric analysis of the binary systems ABDorA /ABDorC and ABDorBa / ABDorBb. These two systems of well-known late-type stars are gravitationally associated and they constitute the quadruple ABDoradus system. From the astrometric data available at different wavelengths, we report: (i) a determination of the orbit of ABDorC, the very low mass companion to ABDorA, which confirms the mass estimate of 0.090Msun reported in previous works; (ii) a measurement of the parallax of ABDorBa, which unambiguously confirms the long-suspected physical association between this star and ABDorA; and (iii) evidence of orbital motion of ABDorBa around ABDorA, which places an upper bound of 0.4…
The Need of Co-utility for Successful Crowdsourcing
2017
Technological development has promoted the rise and use of the collective intelligence through Internet. To efficiently handle this collective intelligence, several processes have naturally emerged. Crowdsourcing is one of them. By using crowdsourcing, the undertaking of a task can be proposed by a person or organization to the crowd that composes Internet. Although these proposed tasks could vary in their requirements for successful accomplishment, any crowdsourcing initiative always includes different benefits for the promoters of the initiatives and one or more rewards for each person of the crowd. These rewards play a key role because their evaluation by the crowd will condition the num…
Determinants of web site information by Spanish city councils
2008
PurposeThe purpose of this research is to analyse the web sites of large Spanish city councils with the objective of assessing the extent of information disseminated on the internet and determining what factors are affecting the observed levels of information disclosure.Design/methodology/approachThe study takes as its reference point the existing literature on the examination of the quality of web sites, in particular the provisions of the Web Quality Model (WQM) and the importance of content as a key variable in determining web site quality. In order to quantify the information on city council web sites, a Disclosure Index has been designed which takes into account the content, navigabili…
Pliocene colonization of the Mediterranean by Great White Shark inferred from fossil records, historical jaws, phylogeographic and divergence time an…
2020
Aim: Determine the evolutionary origin of the heretofore poorly characterized contemporary Great White Shark (GWS; Carcharodon carcharias) of the Mediterranean Sea, using phylogenetic and dispersal vicariance analyses to trace back its global palaeo-migration pattern. Location: Mediterranean Sea. Taxon: Carcharodon carcharias. Methods: We have built the largest mitochondrial DNA control region (CR) sequence dataset for the Mediterranean GWS from referenced historical jaws spanning the 19th and 20th centuries. Mediterranean and global GWS CR sequences were analysed for genetic diversity, phylogenetic relationships and divergence time. A Bayes factor approach was used to assess two scenarios …
Panel Summary: Behavioural Models
1997
The aim of this paper is to report the panel discussion on behavioural models of human or machine agents interacting with the environment. In particular the following hot points will been analysed: a framework for describing behaviour; learning and evolution; closure and teleonomy when it comes to behaviour; the perception-learning-planning loop; the information integration at the (pre)attentive level; knowing by acting and knowing by computing.
Family Stability and Labor Market Gender Convergence
2009
The present paper examines the historical development in the structure of the family in terms of marriage, divorce, fertility and labor 1886-2007 in order to map quantitative changes. The paper draws new information from novel Norwegian data. Along with the changing family relations we also quantify the closing of the gender gap by converging trends for both labor participation rates and wages. The paper concludes that there is a clear correspondence between gender convergence in the labor market and less stable family relations.
Natural Convection Heat Transfer in a Partially- or Completely-Partitioned Vertical Rectangular Enclosure
1991
Production technologies in stochastic continuous time models
2011
Abstract Properties of dynamic stochastic general equilibrium models can be revealed by either using numerical solutions or qualitative analysis. Very precise and intuition-building results are obtained by working with models which provide closed-form solutions. Closed-form solutions are known for a large class of models some of which, however, have some undesirable features such as potentially negative output. This paper offers closed-form solutions for models which are just as tractable but do not suffer from these shortcomings.