Simulating whole supercomputer applications

Architecture simulation tools are extremely useful not only to predict the performance of future system designs, but also to analyze and improve the performance of software running on well know architectures. However, since power and complexity issues stopped the progress of single-thread performance, simulation speed no longer scales with technology: systems get larger and faster, but simulators do not get any faster. Detailed simulation of full-scale applications running on large clusters with hundreds or thousands of processors is not feasible. In this paper we present a methodology that allows detailed simulation of large-scale MPI applications running on systems with thousands of processors with low resource cost. Our methodology allows detailed processor simulation, from the memory and cache hierarchy down to the functional units and the pipeline structure. This feature enables software performance analysis beyond what performance counters would allow. In addition, it enables performance prediction targeting non-existent architectures and systems, that is, systems for which no performance data can be used as a reference. For example, detailed analysis of the weather forecasting application WRF reveals that it is highly optimized for cache locality, and is strongly compute bound, with faster functional units having the greatest impact on its performance. Also, analysis of next-generation CMP clusters show that performance may start to decline beyond 8 processors per chip due to shared resource contention, regardless of the benefits of through-memory communication.Postprint (published version

A Straightforward Methodology to Obtain the Power Coefficients Matrices for Unbalanced Distribution Networks to be Used in Flexibility Markets

The objective of the paper is to address the congestion problem in a specific distribution line by means of sensitivity coefficients seeking an intelligent a ctivation of t he available flexibility, based not only on economic a spects but also on the efficient use of flexibility. This paper proposes a straightforward methodology to obtain the sensitivity coefficient matrices for the unbalanced distribution networks, employing the perturb-and-observe (P & O) approach to assure an efficient usage of flexible resources. This means that a small change in the active power value of a particular flexibility provider, either load or generator, is applied to evaluate the power variation, therefore the loading variation, in every line of the system. The paper shows how these coefficients can be implemented in at heoretical energy market by the market operators by validating its application in an unbalanced network case and then compared with a real balanced distribution network. The simulations have been carried out in DIgSILENT PowerFactory through its API in Python.H2020, 824414, CoordiNe

Communication, Education and social movements online: New Imaginaries, old utopias

Due to the Internet arrival, the Social Movements, alternatives and critics, have considered it as a new scene capable to renew the traditional ways of intervention and collective action. Besides it is open the possibility to outdo the activism atomization of the social movements, organizing them in a global strategy, articulated upon nodes of local intervention. There is a renewed illusion, due to this inclusion of social movements in the Internet, understood as a new pedagogical tool for the organization, the debate, the broadcast and the social mobilization, which wake up old social utopias, that nowadays they are proposed as real and feasible utopias. This way we regard that the role of the citizenship, as a participant in the political power, could be replaced by a mere contract of enjoyment of goods and services in the Internet worldwide (Pérez Luño, 2004). So, the individual may find satisfied the technological utopia which includes the promise of social change. The tension generated by these to powers seems to be granting a privilege to an instrumental use of New Technologies in the transformation processes that promote the social movements. This way we may misunderstand the managing of utopias with simple strategies of online communication and education. Therefore, it is needed to overflow (in a metaphorical way) that instrumental interpretation of the Internet to release deep structural transformations and new imaginaries related to the utopia of a free communication and education media, at the service of a democratical society development.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Síndrome de sobrecarga en cuidadores de Alzheimer. Revisión sistemática

El progresivo envejecimiento de la sociedad hace que se disparen los índices de enfermedades asociadas a la senectud como es el caso de la enfermedad de Alzheimer (EA), la cual produce un deterioro cognitivo progresivo generando gran dependencia a los afectados y cuyo cuidado suele recaer en un único cuidador, con frecuencia conllevado una gran carga de trabajo y un deterioro de su salud. La presente revisión sistemática tiene como objetivo profundizar en el conocimiento sobre los factores relacionados con la sobrecarga en cuidadores informales de EA. Los hallazgos derivados de los estudios confirman el predominio de las mujeres en las tareas relacionadas con el cuidado. También queda de manifiesto la presencia de altos niveles de carga en cuidadores de EA y la existencia de factores moderadores, como la resiliencia, las estrategias de afrontamiento, los aspectos positivos del cuidado, la religiosidad, la autoeficacia o el apoyo social percibido.The progressive aging of society causes the rates of diseases associated with senescence to skyrocket, such as Alzheimer’s disease (AD), which produces a progressive cognitive deterioration generating great dependence on those affected and whose care usually falls on a single caregiver, often with a heavy workload and deteriorating health. The objective of this systematic review is to deepen our understanding of the factors related to overload in informal caregivers of AD. The findings derived from the studies confirm the predominance of women in care-related tasks. The presence of high levels of burden on AD caregivers and the existence of moderating factors, such as resilience, coping strategies, positive aspects of care, religiosity, self-efficacy or perceived social support are also evident

Infective Endocarditis Due to S. Aureus in Adult Patients: Clinical Study in Neiva (2022-2024)

A documentary review was conducted on the production and dissemination of research papers pertaining to the study of infective endocarditis in adult patients and clinical care. The objective of the bibliometric analysis presented in this document was to ascertain the principal characteristics of the corpus of publications registered in the Scopus database during the period 2022-2024, resulting in the identification of 95 publications. The data provided by this platform was organized into graphs and figures, which categorized the information by year of publication, country of origin, area of knowledge and type of publication. Subsequently, the position of different authors regarding the proposed theme is referenced through a qualitative analysis, once the aforementioned characteristics have been described. The research yielded several noteworthy findings. Notably, the United States led in scientific production, with 40 publications, among countries with authors affiliated with institutions in that nation. The area of knowledge that made the greatest contribution to the construction of bibliographic material related to the study of infective endocarditis in adult patients and clinical care was medicine, with 89 published documents. Furthermore, the most used type of publication during the period indicated above was the journal article, which constituted 88% of the total scientific production. Furthermore, a case study is proposed for the care of this type of patient in a clinic in Neiva, Huila, Colombia. Through the observation technique, it is expected that the cases presented in older adults and their evolution will be characterized

Prevalencia de lesiones osteomusculares en patinadores de carreras de Villavicencio, Colombia

Objetivo Determinar la prevalencia de lesiones osteomusculares y su relación con las diferentes variables de presentación en la práctica del patinaje de carreras, en atletas por categorías de edad entre los 8 y los 23 años de edad, de la ciudad de Villavicencio,Colombia.Métodos Se desarrolló un estudio observacional analítico de corte transversal o de prevalencia, por medio de la aplicación de un instrumento de recolección de información que fue diseñado y validado cualitativa y cuantitativamente. El instrumento incluyólas variables asociadas a la presentación de lesiones organizadas en cinco dominios.  La información recolectada se analizó con estadística descriptiva.Resultados El 66,7 % de la población estudiada pertenecía al sexo femenino, el 39 % de los patinadores tenía entre cinco y seis años de vida deportiva y se ubicó en la categoría de transición; nueve de cada diez atletas realizaron entrenamiento más de cinco días ala semana; la misma proporción realizó de tres a cinco horas de entrenamiento diario. La prevalencia de lesiones osteomusculares fue del 53,7 % del total de la poblaciónestudiada; el 29,6 % presentaron entre una y dos lesiones y el 5,6 % de patinadores lesionados tuvo entre nueve y diez lesiones.Conclusiones La mayoría de lesiones osteomusculares se relacionaron con las categorías de menor edad, en periodos precompetitivo y de preparación específica; afectaron miembros inferiores y fueron, en mayor proporción, lesiones óseas y musculares.Objective To determine the prevalence of musculoskeletal injuries and their relation to different presentation variables in inline speed skaters by age categories, between 8 and 23 years of age, from Villavicencio, Colombia.Methods An observational cross-sectional or prevalence analytical study was developed by applying an information collection instrument that was designed and validated qualitatively and quantitatively. The instrument included variables associated withthe presentation of lesions organized in five domains. The information collected was analyzed with descriptive statistics.Results 66.7 % of the population studied were females, 39 % of skaters had between five and six years of sporting experience, and were in the transition category. Nine out of ten athletes trained more than five days a week, and the same proportion did three to five hours of daily training. The prevalence of musculoskeletal injuries was 53.7 % in the total population studied; 29.6 % had between one and two injuries, and 5.6% of injured skaters had between nine and ten injuries.ConclusionsMost of musculoskeletal injuries were related to the younger age categories, in precompetitive and specific preparation periods. The lower limbs were the most affected, to a greater extent, by bony and muscular lesions

Educación policial en derechos humanos desde el modelo pedagógico interestructurante dialogante

This article shows the research results obtained through the application of the Dialogue Interstructuring Model in police education in Human Rights, for the development of generic skills necessary during the exercise of the police profession. Its methodology was based on the socio-critical paradigm, with a qualitative approach, through the case study design; the sample selection was given for convenience. The collection of information starts from the use of the In-Basket technique applied in two phases (pretest and posttest); With the results of the pretest, the initial diagnosis is made, from which six didactic sequences are built, preserving the opening, development and closing structure. In the pedagogical practice, observation and the field diary were used as data collection instruments. Once the thematic contents have been developed, a post-test application is carried out, evaluating the development of institutional competences by the students. Finally, it is evident that those who were educated through the Interstructuring Dialogue pedagogy (Experimental Group) obtained better performance than those educated through the Traditional Model (Control Group).Este artículo muestra los resultados de investigación obtenidos mediante la aplicación del modelo interestructurante dialogante en la educación policial en derechos humanos, para el desarrollo de competencias genéricas necesarias durante el ejercicio de la profesión policial. Su metodología se fundamentó desde el paradigma sociocrítico, con un enfoque cualitativo, mediante un estudio de caso; la selección de la muestra se dio por conveniencia. La recolección de información usó la técnica in-basket aplicada en dos fases (pretest y postest); con los resultados del pretest, se realizó el diagnóstico inicial, a partir del mismo se construyeron seis secuencias didácticas en las que se conserva la estructura de apertura, desarrollo y cierre. En la práctica pedagógica se utilizó la observación y el diario de campo como instrumentos de recolección de información. Una vez desarrollados los contenidos temáticos se aplicó el postest para evaluar el desarrollo de las competencias institucionales por parte de los estudiantes. Finalmente, se evidencia que quienes se educaron mediante la pedagogía interestructurante dialogante (grupo experimental) obtuvieron mejor desempeño que los educados con el modelo tradicional (grupo control)

Educación policial en derechos humanos desde el modelo pedagógico interestructurante dialogante

Este artículo muestra los resultados de investigación obtenidos mediante la aplicación del modelo interestructurante dialogante en la educación policial en derechos humanos, para el desarrollo de competencias genéricas necesarias durante el ejercicio de la profesión policial. Su metodología se fundamentó desde el paradigma sociocrítico, con un enfoque cualitativo, mediante un estudio de caso; la selección de la muestra se dio por conveniencia. La recolección de información usó la técnica in-basket aplicada en dos fases (pretest y postest); con los resultados del pretest, se realizó el diagnóstico inicial, a partir del mismo se construyeron seis secuencias didácticas en las que se conserva la estructura de apertura, desarrollo y cierre. En la práctica pedagógica se utilizó la observación y el diario de campo como instrumentos de recolección de información. Una vez desarrollados los contenidos temáticos se aplicó el postest para evaluar el desarrollo de las competencias institucionales por parte de los estudiantes. Finalmente, se evidencia que quienes se educaron mediante la pedagogía interestructurante dialogante (grupo experimental) obtuvieron mejor desempeño que los educados con el modelo tradicional (grupo control)

Prevalence of salivary Epstein-Barr virus in potentially malignant oral disorders and oral squamous cell carcinoma

Background: To analyze the presence of salivary Epstein-Barr virus (EBV) DNA in oral squamous cell carcinoma and potentially malignant oral disorders. Material and Methods: Three groups were studied: Group 1 (12 oral squamous cell carcinomas (OSCC)), Group 2 (12 potentially malignant oral disorders (PMD)) and Group 3 (47 healthy controls). EBV DNA salivary analysis was performed by PCR. Results: The highest percentage of positive salivary EBV DNA corresponded to the OSCC group (58.3%), followed by the PMD group (41.7%) and the controls (40.4%). The differences between groups were not statistically significant, however (p>0.05). Conclusions: Salivary EBV DNA was more prevalent in OSCC than in PMD or the controls