Manteniendo lazos vía Web: El Caso de las Comunidades Mexicanas de Emigrantes en los EUA

Migration has gained considerable attention in the past few years all over the world. The migratory phenomenon has already affected many countries and is likely to deeply reshape forever their societies and regulations. Of particular interest is the migratory flow from Mexico to the USA, which is identified as one of the most important labor related worldwide. It has been found that migration can potentially have a major impact on individuals leaving home as they can experience nostalgic feelings. As a result of physical distance, family members look for closeness to prevail by maintaining in permanent communication. This paper offers an analysis of web sites from Mexican diasporic communities living in the US, aiming to reveal the level of presence of those communities on the Internet as well as to characterize the support they provide for living-away members of the communities

“I was pushed out of school”: Social and Emotional Approaches to a Youth Promotion Program

In this study, we analyze the effects of Project GRIT (Generating Resiliency and Inspiring Transformation), a six-week intervention program that worked with a group of high school pushouts, students who were encouraged to leave school, in a school district in southern California. We interviewed thirty-nine former high school students who “dropped out,” or were pushed out of school, 61.5% males (n=24) and 38.5% females (n=15). The mean age is 18.1 years and the sample consists of 27 Latino and 12 African American/Black youth. Findings indicate that an increase in healthy relationships with peers generates beneficial social and emotional skills, including increased communication, team-oriented thinking, projected self-actualization, trust, and development of self. We argue that storytelling is central to engaging and promoting at-promise students in the education system, providing them opportunities to overcome adversity, excel in academics, and expand their ability to build healthy relationships with others in their community

Relocation and seismotectonic interpretation of the seismic swarm of August – December of 2012 in the Linares area, northeastern Mexico

We relocated 52 events of 2.5 ≤ Mc ≤ 3.6 from a seismic sequence of over 250 events that occurred during July-December 2012 southwest of the Linares area, northeastern Mexico. To examine this swarm four seismic stations were installed in the region and operated during different time periods from September to December. Relocation of the swarm showed that the earthquake hypocentral depths were at 8 (±5) km, and the time residuals had values ≤ 0.38 s. The fault plane solutions were generated for individual earthquakes and through the use of the composite mechanism technique. The focal mechanism solutions show pure reverse faulting; the SW dipping NNW – SSE trending nodal plane is the inferred fault plane (strike ~150°, dip ~50° and rake ~67°), which reveals that maximum horizontal stress (SHmax > Shmin > Sv) predominates in the area. RESUMEN En este trabajo relocalizamos 52 sismos en el rango de 2.5 ≤ Mc ≤ 3.6 de una secuencia sísmica de más de 250 eventos que ocurrió al suroeste de la ciudad de Linares, N.L., durante los meses de julio – diciembre de 2012, en el noreste de México. Para estudiar este enjambre se instalaron cuatro estaciones sismológicas en la región de interés, las cuales operaron durante diferentes periodos entre septiembre y diciembre. La relocalización de la secuencia demostró que las profundidades hipocentrales fueron de 8 (±5) km, y los residuales de los tiempos de arribo tuvieron valores ≤ 0.38 s. Se generaron soluciones del plano de falla para sismos individuales, así como a través de la técnica de mecanismos compuestos. La solución de los mecanismos focales encontrada corresponde con fallamiento inverso con rumbo NNW-SSE y buzamiento hacia el SW para el plano nodal inferido (rumbo ~150°, buzamiento ~50° y ángulo de deslizamiento ~67°), el cual revela que el esfuerzo horizontal máximo predomina en el área de estudio (SHmax > Shmin > Sv)

Critical and Ictal Phases in Simulated EEG Signals on a Small-World Network

Healthy brain function is marked by neuronal network dynamics at or near the critical phase, which separates regimes of instability and stasis. A failure to remain at this critical point can lead to neurological disorders such as epilepsy, which is associated with pathological synchronization of neuronal oscillations. Using full Hodgkin-Huxley (HH) simulations on a Small-World Network, we are able to generate synthetic electroencephalogram (EEG) signals with intervals corresponding to seizure (ictal) or non-seizure (interictal) states that can occur based on the hyperexcitability of the artificial neurons and the strength and topology of the synaptic connections between them. These interictal simulations can be further classified into scale-free critical phases and disjoint subcritical exponential phases. By changing the HH parameters, we can model seizures due to a variety of causes, including traumatic brain injury (TBI), congenital channelopathies, and idiopathic etiologies, as well as the effects of anticonvulsant drugs. The results of this work may be used to help identify parameters from actual patient EEG or electrocorticographic (ECoG) data associated with ictogenesis, as well as generating simulated data for training machine-learning seizure prediction algorithms

Precipitation Process in Fe-Ni-Al-based Alloys

This chapter covers first the precipitation and coarsening processes in Fe-Ni-Al alloys aged artificially at high temperatures, as well as their effect on the mechanical properties. These results show the precipitation evolution, morphology of precipitates, coarsening kinetics and mechanical properties such as hardness. Additionally, the effect of alloying elements such as copper and chromium is also studied on the precipitation and coarsening processes. The main results of this section are concerning on the coarsening kinetics and its effect on hardness. Besides, the diffusion couple method is employed to study the precipitation and coarsening process in different Fe-Ni-Al alloy compositions, as well as its effect on the hardness. All the above aspects of precipitation and coarsening are also supported with Thermo-Calc calculations

DISEÑO EMERGENTE EN UNA SOCIEDAD DE CONSUMO EN TAMPICO, MEXICO.

Al paso de los años la frontera de México con Estados Unidos ha tenido una serie de transformaciones socioculturales y del paisaje urbano. Bajo esa premisa este estudio de investigación doctoral pretende analizar estos hechos a partir de la historia y la evolución del diseño en esa sociedad de consumo, para generar un marco referencial que pueda encauzar las políticas públicas orientadas por la cultura como motor de cohesión social, identidad local y promoción de valores

Que os façamos ouvir

Book Review of Se me deixam falar, by Moema Viezzer, with the narratives taken by the author of Domitlia Barrios, a Bolivian union leader who fought for the rights of her people, especially women and the working class during the various coups and dictatorships in the history of Bolivia. In addition to being a miner's wife, the union member was also the daughter of a miner and lived for most of her life in a state-owned mining company called Siglo XX, where workers' conditions were unhealthy. The book divides Domitila's narrative into her life, her situation, and her claims, all narrated without changes in Domitila's idioms. The book shows part of Latin American struggle processes from a feminine perspective, almost never found in large historical narratives. It uses a very close past so that we can bring new perspectives of fight of the same struggles for all the Latin American future.Reseña del libro Se me deixam falar, de Moema Viezzer, con las narrativas tomadas por la autora de Domitlia Barrios, una dirigente sindical boliviana que luchó por los derechos de su pueblo, especialmente de las mujeres y la clase trabajadora durante los diversos golpes y dictaduras en el Historia de Bolivia. Además de ser esposa de un minero, la sindicalista también era hija de un minero y vivió la mayor parte de su vida en una empresa minera estatal llamada Siglo XX, donde las condiciones de los trabajadores no eran saludables. El libro divide la narrativa de Domitila en su vida, su situación y sus afirmaciones, todo narrado sin cambios en los modismos de Domitila. El libro muestra parte de los procesos de lucha latinoamericanos desde una perspectiva femenina, casi nunca encontrada en grandes narrativas históricas. Utiliza un pasado muy cercano para que podamos traer nuevas perspectivas de lucha de las mismas luchas para todo el futuro latinoamericano.  Resenha sobre o livro Se me deixam falar, de Moema Viezzer, com as narrativas colhidas pela autora de Domitlia Barrios, líder sindicalista boliviana que lutou pelos direitos de seu povo, especialmente das mulheres e da classe trabalhadora durante os diversos golpes e ditaduras presentes na história da Bolívia. Além de esposa de mineiro, a sindicalista também era filha de um minerador e, morou por quase toda a sua vida em uma mineradora estatal chamada Siglo XX, onde as condições dos trabalhadores eram insalubres. O livro divide a narrativa de Domitila em sua vida, sua situação e sua e suas reivindicações, todas narradas sem que houvesse alterações nas expressões idiomáticas de Domitila. O livro mostra parte dos processos de luta latino-americanos a partir de uma perspectiva feminina, pouco encontrada em grandes narrativas históricas. Vale-se de um passado muito próximo para que possamos trazer novas perspectivas de luta para o futuro latino-americano. &nbsp

Genetic diversity of the E Protein of Dengue Type 3 Virus

<p>Abstract</p> <p>Background</p> <p>Dengue is the most important arbovirus disease in tropical and subtropical countries. The viral envelope (E) protein is responsible for cell receptor binding and is the main target of neutralizing antibodies. The aim of this study was to analyze the diversity of the E protein gene of DENV-3. E protein gene sequences of 20 new viruses isolated in Ribeirao Preto, Brazil, and 427 sequences retrieved from GenBank were aligned for diversity and phylogenetic analysis.</p> <p>Results</p> <p>Comparison of the E protein gene sequences revealed the presence of 47 variable sites distributed in the protein; most of those amino acids changes are located on the viral surface. The phylogenetic analysis showed the distribution of DENV-3 in four genotypes. Genotypes I, II and III revealed internal groups that we have called lineages and sub-lineages. All amino acids that characterize a group (genotype, lineage, or sub-lineage) are located in the 47 variable sites of the E protein.</p> <p>Conclusion</p> <p>Our results provide information about the most frequent amino acid changes and diversity of the E protein of DENV-3.</p