Search results for "wolf"

Introduction to General Duality Theory for Multi-Objective Optimization

1992

This is intended as a comprehensive introduction to the duality theory for vector optimization recently developed by C. Malivert and the present author [3]. It refers to arbitrarily given classes of mappings (dual elements) and extends the general duality theory proposed for scalar optimization by E. Balder, S. Kurcyusz and the present author [1] and P. Lindberg.

Incipient genome erosion and metabolic streamlining for antibiotic production in a defensive symbiont

2021

Significance Genome reduction is commonly observed in bacteria of several phyla engaging in obligate nutritional symbioses with insects. In Actinobacteria, however, little is known about the process of genome evolution, despite their importance as prolific producers of antibiotics and their increasingly recognized role as defensive partners of insects and other organisms. Here, we show that “Streptomyces philanthi,” a defensive symbiont of digger wasps, has a G+C-enriched genome in the early stages of erosion, with inactivating mutations in a large proportion of genes, causing dependency on its hosts for certain nutrients, which was validated in axenic symbiont cultures. Additionally, overe…

La crisis que hace temblar al capitalismo

2008

A New Universal Cellular Automaton Discovered by Evolutionary Algorithms

2004

In Twenty Problems in the Theory of Cellular Automata, Stephen Wolfram asks “how common computational universality and undecidability [are] in cellular automata.” This papers provides elements of answer, as it describes how another universal cellular automaton than the Game of Life (Life) was sought and found using evolutionary algorithms. This paper includes a demonstration that consists in showing that the presented R automaton can both implement any logic circuit (logic universality) and a simulation of Life (universality in the Turing sense).

Los hombres del presidente

2004

Francia y el modelo europeo

2004

Guerras preventivas, amenaza mundial

2003

Oral Manifestations of Wolf-Hirschhorn Syndrome: Genotype-Phenotype Correlation Analysis

2020

Background: Wolf-Hirschhorn syndrome (WHS) is a rare disease caused by deletion in the distal moiety of the short arm of chromosome 4. The objectives of this study were to report the most representative oral findings of WHS, relate them with other clinical characteristics of the disease, and establish possible phenotype-genotype correlation. Methods: The study was conducted at 6 reference centers distributed throughout Spain during 2018&ndash

Segmental dyskinesia in Wolff–Parkinson–White syndrome: A possible cause of dilatative cardiomyopathy

2006

Wolff-Parkinson-White (WPW) is a syndrome characterized by the presence of an accessory pathway that skipping A-V node may lead the electrical stimulus from the atrium directly to the ventricle. Some studies reported the finding of myocardial dyskinesia in the segments precociously activated by the accessory pathway, at echocardiogram and at nuclear cardiac study. Soria et al. reported, in 1985, an increased incidence of dilative cardiomyopathy in patients with WPW. The pathophysiological pathway that leads to ventricular dilation may be due to the increase of end-diastolic pressure secondary to a tachycardia-induced cardiomyopathy. Tachycardia-induced cardiomyopathy is usually secondary to…

La destitución del mito. Christa Wolf y la reescritura de la memoria histórica

2018

En este ensayo se reconstruye el recorrido narrativo de Christa Wolf desde una perspectiva que propongo definir como destitución mitológica. Se fijan cuatro estaciones correspondientes con las cuatro novelas cruciales en la biografía literaria de la autora. La primera es El cielo partido, en la que Wolf trabaja con el concepto de Vergangenheitsbewältigung, es decir: una elaboración del pasado que permite su superación. La segunda es Muestra de infancia, en la que aparece la figura de la precisión fantástica, entendida como la única auténtica posibilidad de memoria histórica colectiva. Finalmente Casandra y Medea, donde este trabajo de rememoración encuentra su aplicación en la deconstrucció…