Garcia-Mireles G.A.,University of Sonora
Advances in Intelligent Systems and Computing | Year: 2017
Sustainability is a main concern in our current society. One of the aspects that play an important role in supporting sustainable development is Information Technology (IT). Both software behavior and the way it is developed impact the amount of energy consumption. Thus, this paper aims to present the most recent approaches to address sustainability from a software process improvement perspective. A systematic mapping study was conducted to identify the latest efforts made in the IT field to improve sustainability. As a result, seven primary papers with initial ideas about how sustainability can be integrated into software processes were found. The lack of both proposals and empirical data suggests that further research on the topic is needed. © Springer International Publishing AG 2017.
Holguin A.,University of Sonora
Journal of Physics: Conference Series | Year: 2017
Research was conducted to find materials in their natural state at room temperature and exhibit the effects of superconductivity in the volcanic region of deserts Altar in Sonora and Baja California Norte. 100 were collected at random samples of materials from different parts of the region and underwent tests to determine their electromagnetic parameters of electrical resistance, magnetism, temperature and conductivity. Only it has been found that the effects of superconductivity in them is only present at very low temperatures corroborating what has been done in other investigations, however no indication that there is a material or combination of materials that can produce the effects of superconductivity other temperatures so it is suggested to continue the search for such materials and / or develop a technique at room temperature to allow mimic the behavior of atoms when superconductivity occurs at. © Published under licence by IOP Publishing Ltd.
Agency: European Commission | Branch: FP7 | Program: CPCSA | Phase: INFRA-2010-1.2.3 | Award Amount: 2.76M | Year: 2010
The GISELA objective is to guarantee the long-term sustainability of the European Latin American e-Infrastructure and thus ensure the continuity and enhancement of the Virtual Research Communities (VRC) using it. The project will focus on:\n\tImplementing the Latin American Grid Initiative (LGI) sustainability model rooted on National Grid Initiatives (NGI) or Equivalent Domestic Grid Structures (EDGS), in association with CLARA and collaborating with EGI;\n\tProviding VRCs with the e-Infrastructure and Application-related Services required to improve the effectiveness of their research, addressing both:\no\tCurrent EELA-2 small User Communities;\no\tLarger VRCs through Specialised Support Centres (SSCs).\nThe GISELA mission is twofold:\n- Ensure the sustainability of the EU-LA e-Infrastructure\nThe sustainability of the EU part of the e-Infrastructure being cared of by EGI, GISELA will concentrate on its LA component. The tasks, at each level of the e-Infrastructure are:\n\tInstitution: Get all Services fully operational in the Resource Centre (RC);\n\tCountry: Implement all Grid Operation Centre (GOC) Services;\n\tContinent: Implement all Grid & Network Support Centres (GSC, NSC) Services;\n\tSupport a catchall GOC.\n- Support Virtual Research Communities\nThe support will encompass:\n\tUser Support:\no\tProvide access to the EU-LA Infrastructure to VOs represented in GISELA (HEP, Life Sciences, Earth Sciences, etc.);\no\tPublicise and support the GISELA e-Infrastructure and Application Services;\no\tCollaborate with VRCs or SSCs to the development of integrated services (e.g. gateways).\n\tTraining & Dissemination activities\no\tOrganisation of tutorials for single users and VRCs;\no\tCoordinate dissemination actions, workshops, Conferences;\no\tProduce dissemination material.\nGrid Services for VRCs will be provided by CLARA on the basis of a business plan using a Life Cycle Product Management (LCPM) approach.
Flores Espinoza R.,University of Sonora
International Journal of Geometric Methods in Modern Physics | Year: 2011
In this paper, we study the existence problem of periodic first integrals for periodic Hamiltonian systems of Lie type. From a natural ansatz for time-dependent first integrals, we refer their existence to the existence of periodic solutions for a periodic Euler equation on the Lie algebra associated to the original system. Under different criteria based on properties for the Killing form or on exponential properties for the adjoint group, we prove the existence of Poisson algebras of periodic first integrals for the class of Hamiltonian systems considered. We include an application for a nonlinear oscillator having relevance in some modern physics applications. © 2011 World Scientific Publishing Company.
Vorobiev Y.M.,University of Sonora
Physics of Atomic Nuclei | Year: 2011
Using the averaging procedure for Poisson brackets, we study the nonadiabatic dynamics of perturbed Hamiltonian systems on slow-fast S1 spaces. © 2011 Pleiades Publishing, Ltd.
Corral Verdugo V.,University of Sonora
Environment, Development and Sustainability | Year: 2012
As in most areas of psychology, a negative bias permeates the study of the subject of Conservation Psychology: sustainable behavior (SB). SB constitutes the set of actions aimed at protecting the socio-physical environment. This behavior is sometimes addressed as having negative antecedent-instigators (fear, guilt, shame), activated to avoid undesirable outcomes from environmental degradation. Also, psycho-environmental researchers often visualize negative psychological consequences (discomfort, inconvenience, sacrifice) of SB. Yet, a number of studies reveal that positive psychological antecedents (capacities, emotions, virtues and strengths) as well as positive psychological consequences (satisfaction, psychological well-being, and happiness) of SB are also significant determinants of pro-environmental actions. In this paper, I argue that SB is positive behavior originated by positive dispositional factors, and maintained by psychological benefits. By combining the emergent fields of positive psychology and the psychology of sustainability, an alternative approach for the study of the positive psychology of sustainable behavior is outlined. © 2012 Springer Science+Business Media B.V.
Olmos D.,University of Sonora
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2010
In this paper, the Fitzhugh-Nagumo (FHN) equations and a modified FHN (MFHN) are considered. For the modified version, the recovery variable v has three different time scales. By considering different parameters in the local dynamics of the MFHN equations, it is observed that the phenomenon of reflection and annihilation at an impermeable boundary is observed just as in the Beeler-Reuter model. The interaction of spirals obtained with the FHN, MFHN, and Beeler-Reuter model, and an obstacle is also considered. The phenomenon of reflection of the spiral wave at a boundary changes when the boundary becomes an obstacle. Four properties for attachment of a spiral wave to an obstacle are presented in this work. © 2010 The American Physical Society.
Sotelo-Cruz N.,University of Sonora
Gaceta Medica de Mexico | Year: 2012
The Stevens-Johnson syndrome (SJS) and the toxic epidermal necrolysis (TEN) are clinical conditions manifesting as adverse cutaneous reaction to drugs in majority of cases, constituting the same clinical spectrum, differing only in the severity of epidermolysis; both conditions are distinguished by their severity and extensiveness of skin lesions; it can also involve mucous membranes of eyes, respiratory, digestive and urogenital tracts. Two per 1,000,000 are affected annually, among them approximately 20% are children and both of them are considered as potentially fatal medical emergency conditions. Even though the condition was described 89 years ago, until now the exact pathophysiology has not been completely explained. An immune-mediated mechanism has been implicated in its origin, which involves cytotoxic lymphocytes, cytokines, Fas-ligand in keratinocyte apoptosis; genetic makers also has been identified in some racial groups (HLA-B*1520, HLA-B*5801) in relationship with specific susceptibility to certain drugs such as carbamazepine, allopurinol. In children there are no uniform criteria for classification of the skin lesions, neither for the treatment, however recently the authors describe better response of the patients with use intravenous immunoglobulin (IGIV).
A review of kawasaki disease, a perspective from the articles published in mexico since january 1977 to may 2012 [Revisión de la enfermedad de kawasaki en méxico, desde la perspectiva de las publicaciones médicas (enero de 1977 a mayo de 2012)]
Sotelo-Cruz N.,University of Sonora
Archivos de Cardiologia de Mexico | Year: 2013
Kawasaki disease was described in 1967 by Tomisu Kawasaki. It affects children aged between one and 5 years, and it evolves with fever and small vessel vasculitis, which leads to cardiovascular complications, including coronary aneurisms, myocarditis, valve injuries, pericardial effusion and myocardial infarction; eventually involving many others organs. The etiology actually is not well known, as the exactly pathogenic mechanisms; however, now there are important advances. If the clinical signs and symptoms are identify early and the children received treatment with aspirin and intravenous immunoglobulin, the patients evolves without sequels. The Kawasaki disease is an infrequent disease in Mexico. © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.
Manzanares-Martinez J.,University of Sonora
Progress In Electromagnetics Research M | Year: 2010
In this work, an analytic expression to define the effective plasma frequency of an one-dimensional periodic system containing alternating dielectric and metallic slabs is proposed. Such metallic elements are considered to have a Drude dielectric function. The effective plasma frequency is obtained as a simple average of the constitutive materials, and its cutoff frequency for the propagating modes is compared with band structure calculations. We also explore the role of absorption in the transparency frequency cutoff.