1,445 research outputs found
La violencia en la escuela : detección y prevención de conductas violentas
En las sociedades actuales, debemos reconocer que la violencia atraviesa todas las esferas, ya sea económica, social, política y cultural.
Para el presente trabajo, se reconoce que las relaciones sociales son siempre relaciones
de poder, y como tales, siempre se hallan en ellas condiciones de opresión, abuso de
autoridad y discriminación.
La violencia se presenta como un fenómeno cotidiano en las prácticas sociales, se llega a naturalizar, actuando de un modo desprevenido y sorpresivo, no sólo frente a los atentados contra la propiedad, la agresión física y simbólica que se muestra a diario en los medios masivos de comunicación, sino también en otras formas como servicios públicos deficientes, pobreza, marginalidad, adicciones, entre otros.
La propuesta de este trabajo es que los docentes puedan volver visibles las prácticas
violentas a las que están sujetas las relaciones sociales de sus alumnos, dentro y fuera de la escuela, reconociendo inicialmente sus propias prácticas, como posibles portadoras de violencia.Fil: De Cara, Graciela B..
Universidad Nacional de San Jua
Effects of Contrarians in the Minority Game
We study the effects of the presence of contrarians in an agent-based model
of competing populations. Contrarians are common in societies. These
contrarians are agents who deliberately prefer to hold an opinion that is
contrary to the prevailing idea of the commons or normal agents. Contrarians
are introduced within the context of the Minority Game (MG), which is a binary
model for an evolving and adaptive population of agents competing for a limited
resource. Results of numerical simulations reveal that the average success rate
among the agents depends non-monotonically on the fraction of
contrarians. For small , the contrarians systematically outperform the
normal agents by avoiding the crowd effect and enhance the overall success
rate. For high , the anti-persistent nature of the MG is disturbed and
the few normal agents outperform the contrarians. Qualitative discussion and
analytic results for the small and high regimes are also
presented, and the crossover behavior between the two regimes is discussed.Comment: revtex, 11 pages, 4 figure
Adaptive Boolean Networks and Minority Games with Time--Dependent Capacities
In this paper we consider a network of boolean agents that compete for a
limited resource. The agents play the so called Generalized Minority Game where
the capacity level is allowed to vary externally. We study the properties of
such a system for different values of the mean connectivity of the network,
and show that the system with K=2 shows a high degree of coordination for
relatively large variations of the capacity level.Comment: 4 pages, 4 figure
Genetic Diversity and Relationships of Tlingit Moieties
The Tlingit from Southeast Alaska belong to the Northwest Coast cultural tradition, which is defined by regionally shared sociocultural practices. A distinctive feature of Tlingit social organization is the matrilineal exogamous marriage system among clans from two opposite moieties: the Raven/Crow and Eagle/Wolf. Clan and moiety membership are determined by matrilineal descent, and previous genetic studies of Northwest Coast populations have shown that there is a relationship between clan membership and genetic variation of matrilines and patrilines. To further understand this association, mitochondrial DNA (mtDNA) sequences from the Tlingit (n=154) are examined. By comparing mtDNA with moiety membership information, we explore the impact of marriage traditions among the Tlingit with their observable genetic variation. At the genetic level, the results support cultural persistence of Tlingit maternal moiety identity despite the negative impacts of European colonization. Our study additionally illustrates the relevance of data derived from Tlingit oral traditions to test hypotheses about population history on the Northwest Coast
A Youth-Leader Program in Baltimore City Recreation Centers: Lessons Learned and Applications
Peer-led interventions may be an effective means of addressing the childhood obesity epidemichowever, few studies have looked at the long-term sustainability of such programs. As part of a multilevel obesity prevention intervention, B'More Healthy Communities for Kids, 16 Baltimore college students were trained as youth-leaders (YLs) to deliver a skill-based nutrition curriculum to low-income African American children (10-14 years old). In April 2015, formative research was used to inform sustainability of the YL program in recreation centers. In-depth interviews were conducted with recreation center directors (n = 4) and the YLs (n = 16). Two focus groups were conducted with YLs (n = 7) and community youth-advocates (n = 10). Barriers to this program included difficulties with transportation, time constraints, and recruiting youth. Lessons learned indicated that improving trainings and incentives to youth were identified as essential strategies to foster continuity of the youth-led program and capacity building. High school students living close to the centers were identified as potential candidates to lead the program. Based on our findings, the initial intervention will be expanded into a sustainable model for implementation, using a train-the-trainer approach to empower community youth to be change agents of the food environment and role models.Johns Hopkins Urban Health InstituteGlobal Obesity Prevention Center at Johns HopkinsEunice Kennedy Shriver National Institute of Child Health and Human DevelopmentOffice of the Director, National Institutes of Health [U54HD070725]646 CNPq [GDE: 249316/2013-7]Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USAUniv Tennessee, Knoxville, TN USAUniv Fed Sao Paulo, Santos, SP, BrazilDept Recreat & Pk City Baltimore, Baltimore, MD USAUniv Maryland Extens, Ellicott City, MD USAUniv Fed Sao Paulo, Santos, SP, BrazilWeb of Scienc
ICT application in teaching and learning
The purpose of this study was to investigate and assess the use of ICT in the teaching-learning process. This study assessed the senior high school students of PAU Excellencia Global Academy Foundation, Inc.’s students’ attitudes toward ICT integration and the effectiveness of ICT use in the teaching-learning process. The effectiveness of using ICT in the teaching-learning process, as well as the level of attitude toward ICT among the secondary school students participating in the research, were evaluated by the researcher using a descriptive-correlational engaging quantitative approach. As to the findings , one of the most important contributing aspects affecting a student’s success in various subjects and fields is their performance. Generous investments were justified by the firmly held belief that technology may improve student academic achievement by enabling more effective and efficient ICT integration into teaching-learning process for students
Targeting Nrf2 for the treatment of Duchenne Muscular Dystrophy
Imbalances in redox homeostasis can result in oxidative stress, which is implicated in various pathological conditions including the fatal neuromuscular disease Duchenne Muscular Dystrophy (DMD). DMD is a complicated disease, with many druggable targets at the cellular and molecular level including calcium-mediated muscle degeneration; mitochondrial dysfunction; oxidative stress; inflammation; insufficient muscle regeneration and dysregulated protein and organelle maintenance. Previous investigative therapeutics tended to isolate and focus on just one of these targets and, consequently, therapeutic activity has been limited. Nuclear erythroid 2-related factor 2 (Nrf2) is a transcription factor that upregulates many cytoprotective gene products in response to oxidants and other toxic stressors. Unlike other strategies, targeted Nrf2 activation has the potential to simultaneously modulate separate pathological features of DMD to amplify therapeutic benefits. Here, we review the literature providing theoretical context for targeting Nrf2 as a disease modifying treatment against DMD
Dimethyl Fumarate and Its Esters: A Drug with Broad Clinical Utility?
Fumaric acid esters (FAEs) are small molecules with anti-oxidative, anti-inflammatory and immune-modulating effects. Dimethyl fumarate (DMF) is the best characterised FAE and is approved and registered for the treatment of psoriasis and Relapsing-Remitting Multiple Sclerosis (RRMS). Psoriasis and RRMS share an immune-mediated aetiology, driven by severe inflammation and oxidative stress. DMF, as well as monomethyl fumarate and diroximel fumarate, are commonly prescribed first-line agents with favourable safety and efficacy profiles. The potential benefits of FAEs against other diseases that appear pathogenically different but share the pathologies of oxidative stress and inflammation are currently investigated
The VVDS-VLA Deep Field - IV: Radio-optical properties
(abridged) We use the 1.4 GHz VIMOS-VLA Deep Survey and the optical VVDS and
the CFHT-LS to compare the properties of radio loud galaxies with respect to
the whole population of optical galaxies. The availability of multiband
photometry and high quality photometric redshifts allows to derive rest frame
colors and radio luminosity functions down to a limit of a B rest-frame
magnitude of M=-20.
Galaxy properties and luminosity functions (LFs) are estimated up to z~1 for
radio loud and radio quiet early and late type galaxies. Radio loud late type
galaxies are redder than radio quiet objects of the same class and this is an
effect related to the presence of more dust in stronger star forming galaxies.
Moreover, we estimate optical LFs, stellar masses and star formation rate
distributions for radio sources and compare them with those derived for a well
defined control sample, finding that the probability for a galaxy to be a radio
emitter significantly increases at high values of these parameters. Radio loud
early type galaxies show luminosity evolution of their bivariate radio-optical
LF, due to an evolution in the radio-optical ratio. The lack of evolution of
the mass function of radio loud early type galaxies means that no new AGN are
formed at z<1. On the contrary, radio loud late type objects show a strong
evolution, both in luminosity and in density, of the radio LF for z>0.7. This
evolution is the direct effect of the strong optical evolution of this class
and no significant change with redshift of the radio-optical ratio is required.
With the knowledge of the radio-optical ratio and the optical and radio LFs for
late type galaxies, we estimated the star formation history of the Universe up
to z~1.5, using optical galaxies as tracers of the global radio emission.Comment: 17 pages, A&A in pres
- …