Amygdala activity to angry and fearful faces relates to bullying and victimization in adolescents.

Relational bullying and victimization are common social experiences during adolescence, but relatively little functional magnetic resonance imaging (fMRI) research has examined the neural correlates of bullying and victimization in adolescents. The aim of the present study was to address this gap by examining the association between amygdala activity to angry and fearful faces and peer relational bullying and victimization in a community-based sample of adolescents. Participants included 49 adolescents, 12-15 years old, who underwent fMRI scanning while completing an emotional face matching task. Results indicated that interactions between amygdala activity to angry and fearful faces predicted self-reported relational bullying and victimization. Specifically, a combination of higher amygdala activity to angry faces and lower amygdala activity to fearful faces predicted more bullying behavior, whereas a combination of lower amygdala activity to angry faces and lower amygdala activity to fearful faces predicted less relational victimization. Exploratory whole-brain analyses also suggested that increased rostral anterior cingulate cortex activity to fearful faces was associated with less bullying. These results suggest that relational bullying and victimization are related to different patterns of neural activity to angry and fearful faces, which may help in understanding how patterns of social information processing predict these experiences

The Vincentian Charism in the Laity: Frederick Ozanam

Frederic Ozanam’s faith combined belief with action, leading him to found the Society of Saint Vincent de Paul. It was the first universal and permanent apostolate directed by laity, and anticipated the Second Vatican Council’s teachings on the lay apostolate by over a century. It was not enough for him to relieve the poor materially; he wanted to evangelize those he served and others. He believed people should be informed of the Gospel’s relevance to the specific social problems of their day. He thus arranged for Henri Lacordaire’s preaching at Notre Dame, which appealed to general audiences and great intellectuals. As a professor, Ozanam taught that Catholicism advanced civilization and applied Christian principles to socio-economic questions. The forerunner of the Church’s social doctrine, he understood that such a doctrine must be adapted to particular times and places

Extreme Galactic-Winds and Starburst in IR Mergers and IR QSOs

We report -as a part of a long-term study of mergers and IR QSOs- detailed spectroscopic evidences for outflow (OF) and/or Wolf Rayet features in: (i) low velocity OF in the ongoing mergers NGC 4038/39 and IRAS 23128-5919; (ii) extreme velocity OF (EVOF) in the QSOs IRAS 01003-2238 and IRAS 13218+0552; (iii) OF and EVOF in a complete sample of ultra-luminous IR galaxies/QSOs ("The IRAS 1 Jy MKO-KPNO Survey", of 118 objects). We found EVOF in IRAS 11119+3257, 14394+5332, 15130+1958 and 15462-0450. The OF components detected in these objects were mainly associated to starburst processes: i.e., to galactic-winds generated in multiple type II SN explosions and massive stars. The EVOF were detected in objects with strong starburst plus obscured IR QSOs; which suggest that interaction of both processes could generate EVOF. In addition, we analyze the presence of Wolf Rayet features in the large sample of Bright PG-QSOs (Boroson and Green 1992), and nearby mergers and galactic-wind galaxies. We found clear WR features in the Fe II QSOs (type I): PG 1244+026, 1444+407, 1448+273, 1535+547; and in the IR merger Arp 220. HST archive images of IR+BAL QSOs show in practically all of these objects "arc or shell" features probably associated to galactic-winds (i.e., to multiple type II SN explosions) and/or merger processes. Finally, we discuss the presence of extreme starburst and galactic wind as a possible evolutive link between IR merger and IR QSOs; where the relation between mergers and extreme starburst (with powerful galactic-winds) plays in important role, in the evolution of galaxies.Comment: 14 pages, 6 figure

High Rate Report Synchrophasor Technique during Dynamic Conditions

139–143Current industrial applications of synchrophasors in intelligent grids depend to a great extent on highly trustable measurements, mainly during dynamic conditions of a power system, like a power swing which exhibits simultaneous variations of amplitude and phase in both voltage and current. This work presents the assessment of the performance of a novel synchrophasor technique following tests of the dynamic section of the IEEE Std. C37.118.1-2011, which requests testing the simultaneous variations of amplitude and phase

A vision-based monitoring system for very early automatic detection of forest fires

Trabajo presentado a la "I International Conference on Modelling, Monitoring and Management of Forest Fires" celebrada en Toledo del 17 al 19 de Septiembre de 2008.International Conference on Modelling, Monitoring and Management of Forest Fires I This paper describes a system capable of detecting smoke at the very beginning of a forest fire with a precise spatial resolution. The system is based on a wireless vision sensor network. Each sensor monitors a small area of vegetation by running on-site a tailored vision algorithm to detect the presence of smoke. This algorithm examines chromaticity changes and spatio-temporal patterns in the scene that are characteristic of the smoke dynamics at early stages of propagation. Processing takes place at the sensor nodes and, if that is the case, an alarm signal is transmitted through the network along with a reference to the location of the triggered zone - without requiring complex GIS systems. This method improves the spatial resolution on the surveilled area and reduces the rate of false alarms. An energy efficient implementation of the sensor/processor devices is crucial as it determines the autonomy of the network nodes. At this point, we have developed an ad hoc vision algorithm, adapted to the nature of the problem, to be integrated into a single-chip sensor/processor. As a first step to validate the feasibility of the system, we applied the algorithm to smoke sequences recorded with commercial cameras at real-world scenarios that simulate the working conditions of the network nodes. The results obtained point to a very high reliability and robustness in the detection process.This work is funded by Junta de Andalucía (CICE) through project 2006-TIC-2352.Peer Reviewe

Fibra de carbono en lesiones articulares de rótula de conejos

Hemos utilizado implantes de fibra de carbono para rellenar defectos osteocartilaginosos creados en la superficie articular de la rótula de 18 conejos, con el objetivo de estudiar a largo plazo la evolución histológica del proceso de reparación. A los 6 meses de evolución postoperatoria el defecto fue rellenado por tejido fibroso, a los 9 meses se desarrolló tejido fibrocartilaginoso y a los 12 meses los defectos estaban cubiertos por tejido cartilaginoso hialino.Carbon fiber implants were used to fill osteochondral defects created on the articular surface in the patella in 18 rabbits for the purpose of studying the long-term histological changes of the repair process. Six months after surgery the defect was filled by fibrous tissue, where the superficial area was organized parallel to the joint surface. Fibrocartilage developed after 9 months and, after 12 months, the defects were covered by hyaline cartilage tissue

Construcción de la noción de número irracional en formación de profesores: conflictos semióticos y desafíos

La enseñanza y el aprendizaje formalizado de los números irracionales en la formación inicial de profesores de secundaria son problemáticos. Un análisis histórico y epistemológico de la noción de número irracional, sirve de base para enmarcar un estudio empírico, con estudiantes para profesor, que indaga el proceso de construcción de la noción de cardinalidad del conjunto de los números irracionales y la densidad de en R\Q en R. El estudio se realiza por medio de algunos elementos teóricos del enfoque ontosemiótico del conocimiento de y de la instrucción matemáticos. La identificación, por parte del estudiante, de la cardinalidad de conjuntos infinitos, hace posible la emergencia de fenómenos relativos a los cardinales transfinitos, determinándose diferentes tipos de errores y conflictos cognitivos

Meteorological-Based Predictions of Wheat Head Blight Epidemic in the Southern Argentinean Pampas Region

In Argentina, head blight is a highly risky disease (caused by Fusarium graminearum), although its occurrence is sporadic depending on prevalent environmental variables. These traits stimulated the development of predictive models of head blight occurrence which would help growers in the selection of control strategies. Empirical equations for predicting head blight incidence were developed at Pergamino (33° 56′ S, 60° 30′ W) associating temperature and moisture variables with mean disease data. Recently a new fundamental-empirical approach for estimating Fusarium index (incidence% x severity%/100) was developed using data of Pergamino and Marcos Juarez (32° 41′ S, 62°07′ W). In this study our objective was to validate both approaches at three more southern locations: La Dulce (38° 10′ S, 58° 00′ W), Miramar (38° 00′ S, 57° 33′ W) and Balcarce (37° 45′ S, 58° 18W), for the 2001 crop season. Examining partial and mean deviation values between observed and predicted incidence data, an underestimation especially at La Dulce was assessed. A clear improvement of incidence goodness of fit estimations was obtained decreasing the heat accumulation defining the length of the wheat critical period for infection. Employing this last critical period length for the fundamental-empirical approach led to satisfactory Fusarium index predictions. This study showed that both approaches developed at northern locations of the Pampas region can be portable and useful for predicting disease intensity at more southern locations, making only a few changes.Centro de Investigaciones en Fitopatologí