Analytical solution to DGLAP integro-differential equation in a simple toy-model with a fixed gauge coupling

We consider a simple model for QCD dynamics in which DGLAP integro-differential equation may be solved analytically. This is a gauge model which possesses dominant evolution of gauge boson (gluon) distribution and in which the gauge coupling does not run. This may be ${\cal N} =4$ supersymmetric gauge theory with softly broken supersymmetry, other finite supersymmetric gauge theory with lower level of supersymmetry, or topological Chern-Simons field theories. We maintain only one term in the splitting function of unintegrated gluon distribution and solve DGLAP analytically for this simplified splitting function. The solution is found by use of the Cauchy integral formula. The solution restricts form of the unintegrated gluon distribution as function of transfer momentum and of Bjorken $x$. Then we consider an almost realistic splitting function of unintegrated gluon distribution as an input to DGLAP equation and solve it by the same method which we have developed to solve DGLAP equation for the toy-model. We study a result obtained for the realistic gluon distribution and find a singular Bessel-like behaviour in the vicinity of the point $x=0$ and a smooth behaviour in the vicinity of the point $x=1.$Comment: 25 page

Inteligencia emocional y las relaciones interpersonales en la Institucion Educativa Miguel Grau Seminario del Cusco

El mundo interior de las personas y sus relaciones con los demás, son dos espacios donde hay muchas cosas que descubrir, pareciese que una depende de la otra, porque, las actitudes nacen en las emociones y sentimientos los cuales nos permiten convivir con los demás de una manera constructiva o destructiva, el presente trabajo de investigación ha tenido como finalidad demostrar que existe una relación directa entre la forma que utilizan la inteligencia emocional y las relaciones interpersonales los docentes en la Institución Educativa Miguel Grau Seminario del Cusco en el año 2016, situación que ha sido demostrada a través de un análisis estadístico utilizando el coeficiente de Pearson. La muestra con la que se ha trabajado es de 40 docentes del nivel secundario. Es una investigación cuantitativa, porque el análisis se puede explicar numéricamente; y tiene un diseño descriptivo - correlacional, no experimental, con el cual se estudia las características de la inteligencia emocional y su relación con las relaciones interpersonales. La presente investigación nos da como resultados que el coeficiente con que se relacionan la inteligencia emocional y las relaciones interpersonales es de r = 0,752, esto significa que la relación que tienen ambas variables es positiva, entonces mientras crece el dominio de la inteligencia emocional, también crece el dominio de las relaciones interpersonales, y que esto se da en un 75,2%. También se ha visto que el dominio de las habilidades de la inteligencia emocional es regular, por otro lado se ve que las relaciones interpersonales son regulares y finalmente la relación entre las dimensiones de estudio que son conciencia de sí mismo, autorregulación, motivación, empatía, comunicación asertiva, manejo de diferencias, resolución de conflictos y toma de decisiones es positiva Frente a todos estos resultados se puede afirmar que los docentes de la Institución Educativa Miguel Grau Seminario del Cusco tienen la necesidad de trabajar las habilidades de la inteligencia emocional y las relaciones interpersonales, con el fin de mejorar el nivel de convivencia

Early evolutionary differentiation of morphological variation in the mandible of South American caviomorph rodents (Rodentia, Caviomorpha)

Caviomorphs are a clade of South American rodents recorded at least since the early Oligocene (>31.5Ma) that exhibit ample eco-morphological variation. It has been proposed that phylogenetic structure is more important than ecological factors for understanding mandibular shape variation in this clade. This was interpreted as a result of the long-standing evolutionary history of caviomorphs and the early divergence of major lineages. In this work, we test this hypothesis through the analysis of morphological variation in the mandible of living and extinct species and compare this information with that obtained through comparative phylogenetic analyses. Our results support the hypothesis of early origin of mandibular variation; moreover, they suggest the conservation of early differentiated morphologies, which could indicate the existence of constrained evolutionary diversification. © 2011 The Authors.Fil: Alvarez, Alicia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Perez, Sergio Ivan. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Antropología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Verzi, Diego Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentin

Seguridad en redes de sensores

Wireless sensor networks are rapidly expanding due to advances in wireless technologies but also due to their multiple applications in different fields, such as monitoring processes in industrial environments, monitoring patient's vital signs in e-health applications or traffic monitoring. One fundamental aspect in the design of wireless sensor networks is the security of the communications established within the network. As in any wireless network, an open transmission medium is used, which opens door to attackers and a wide variety of threats. For this reason, it is essential to design mechanisms to protect the information against unauthorized access and verify the identity of the parties involved in a communication. On the other hand, nodes are limited devices in terms of processing, storage, etc. and therefore they do not support most traditional security mechanisms. In this work we have implemented and evaluated a wireless sensor network for presence detection. The network is composed of two nodes: a sensor node which detects movements and sends reports to a coordinator node, which in turn sends this information to an external server. The deployed system makes use of security mechanisms that provide confidentiality and authentication in the sensor network and the communication between router and server

Labor orientadora de la supervisión educativa, y su relación con el mejoramiento del desempeño docente, en la región educativa de Panamá Centro, 2009

Con el interés de contribuir en elevar la calidad de la educación en el nivel primario, se realiza el presente estudio de tipo confirmativo, mediante el paradigma cuantitativo y cualitativo, con lo cual se obtienen resultados producto de encuestas y entrevistas cuyos cuestionarios se estructuraron previamente, y de este modo corroborar que el docente mejora su desempeño, en la medida que el supervisor cumpla con su labor orientadora, y cuyo efecto más importante es elevar la calidad de la educación; para este fin se propone una estrategia con sustento legal, que permite llevar a cabo la labor orientadora de la supervisión, mediante la evaluación y los estímulos a las funciones del docente. Esta propuesta es posible, ya que los resultados señalan debilidades puntuales en la labor orientadora de la supervisión, donde a falta de supervisores y directivos titulares se dedica más tiempo a lo administrativo que a lo técnico docente; de allí que existe desmotivación en los docentes, falta de seguimiento, control y no se estudian los resultados del proceso enseñanza aprendizaje ni las evaluaciones docentes, por ende la Universidad de Panamá, mediante este estudio puede aportar al Ministerio de Educación las orientaciones necesarias para generar el cambio

Learning Needs and Quality Care Among Family Caregivers and Elderly Patients of Guadalupe, Cebu City, Central Philippines

This study assessed the learning needs of the family caregivers based on knowledge, skills, attitude and values (KSAV), their quality of care services and the elderly patients’ assessment on the quality of the provided care. The study utilised a descriptive-normative method employing survey research design utilizing a randomized cluster sampling technique. Primary data were collected using a standardised modified interview guide. Face-toface interviews were carried out to family caregivers and elderly patients in Guadalupe Village, Cebu City, Central Philippines. Findings revealed that caregiving jobs are mostly handled by women. Likewise, there were more female than male elderly patients, almost three-fourths of them attained high school or lower level education. Family caregivers’ possessed very good attitude and values. They were also good in terms of knowledge and skills toward the care of elderly patients. Similarly, elderly patients view their caregivers to be very good in attitude and values and good in terms of knowledge and skills. In conclusion, the learning needs among family care givers dealt more on understanding the nature, medical conditions, medication administration, caregiving techniques, diet and nutrition, ambulation techniques and strategies, financial supports from peers and total care management of the elderly patients. The provision of these learning needs anchored on the knowledge, skills, attitude and values ensures the caregivers from experiencing depressions, desperations, and self-isolation

Twisted Nano-optics: Manipulating Light at the Nanoscale with Twisted Phonon Polaritonic Slabs

Recent discoveries have shown that when two layers of van der Waals (vdW) materials are superimposed with a relative twist angle between their respective in-plane principal axes, the electronic properties of the coupled system can be dramatically altered. Here, we demonstrate that a similar concept can be extended to the optics realm, particularly to propagating polaritons, hybrid light-matter interactions. To do this, we fabricate stacks composed of two twisted slabs of a polar vdW crystal (MoO3) supporting low-loss anisotropic phonon polaritons (PhPs), and image the propagation of the latter when launched by localized sources (metal antennas). Our images reveal that under a critical angle the PhPs isofrequency curve (determining the PhPs momentum at a fixed frequency) undergoes a topological transition. Remarkably, at this angle, the propagation of PhPs is strongly guided along predetermined directions (canalization regime) with no geometrical spreading (diffraction-less). These results demonstrate a new degree of freedom (twist angle) for controlling the propagation of polaritons at the nanoscale with potential for nano-imaging, (bio)-sensing, quantum applications and heat management