On-site tests for the detection of potential induced degradation in modules

This paper presents different test alternatives which can be used on-site in a PV installation to detect potential induced degradation (PID) in modules. The testing procedures proposed are: thermal imaging; electroluminescence imaging; open circuit voltage measurements; operating voltage measurements; IV curve measurements; and dark IV curve measurements. Advantages and disadvantages of each test are reported

Goal-oriented Email Stream Classifier with A Multi-agent System Approach

Now-a-days, email is often one of the most widely used means of communication despite the rise of other communication methods such as instant messaging or communication via social networks. The need to automate the email stream management increases for reasons such as multi-folder categorization, and spam email classification. There are solutions based on email content, capable of contemplating elements such as the text subjective nature, adverse effects of concept drift, among others. This paper presents an email stream classifier with a goal-oriented approach to client and server environment. The i* language was the basis for designing the proposed email stream classifier. The email environment was represented with the early requirements model and the proposed classifier with the late requirements model. The classifier was implemented following a multi-agent system approach supported by JADE agent platform and Implementation_JADE pattern. The behavior of agents was taking from an existing classifier. The multi-agent classifier was evaluated using functional, efficacy and performance tests, which compared the existing classifier with the multi-agent approach. The results obtained were satisfactory in all the tests. The performance of multi-agent approach was better than the existing classifier due to the use of multi-threads.This work was performed as part of the Smart University Project financed by the University of Alicante

Framework Based on Simulation of Real-World Message Streams to Evaluate Classification Solutions

Analysing message streams in a dynamic environment is challenging. Various methods and metrics are used to evaluate message classification solutions, but often fail to realistically simulate the actual environment. As a result, the evaluation can produce overly optimistic results, rendering current solution evaluations inadequate for real-world environments. This paper proposes a framework based on the simulation of real-world message streams to evaluate classification solutions. The framework consists of four modules: message stream simulation, processing, classification and evaluation. The simulation module uses techniques and queueing theory to replicate a real-world message stream. The processing module refines the input messages for optimal classification. The classification module categorises the generated message stream using existing solutions. The evaluation module evaluates the performance of the classification solutions by measuring accuracy, precision and recall. The framework can model different behaviours from different sources, such as different spammers with different attack strategies, press media or social network sources. Each profile generates a message stream that is combined into the main stream for greater realism. A spam detection case study is developed that demonstrates the implementation of the proposed framework and identifies latency and message body obfuscation as critical classification quality parameters

Woody Plants Eaten by Goats

Fifteen domestic goat raising units from Tehuaxtla and Maninalcings communities in Mixteca poblana, México, were studied to find out which woody plants parts were mainly grazed by goats. Five marked goats were sampled and watched  while grazing.  Each plant part was taxonomically  collected  and classified.  A descriptive  statistical analysis was performed to determine the number of mouthfuls/time/plant species and mouthfuls/time/plant part. A simple variance analysis (ANOVA) was also performed. Differences among mean values were determined by Dun- can’s test. Leaves, flowers, and unripened fruits were the parts most grazed by goats. With regard to woody compo- nents, legumes reached a higher percent (75 %), particularly their leaves (86 %)

Pedagogía lingüística que promueve el Marco común europeo de referencia para las lenguas: implicación de la retroalimentación interaccional

Objective: In the 2016-2017 academic year, as part of the policy of the Ministry of Higher Education in Cuba, the teaching of English was aligned with the Common European Framework of Reference for Languages. This article aims at devising a theoretical framework supporting the such decision from the underlying pedagogical perspective. Methods: The authors rely on reviewing documents, analysis and synthesis, induction and deduction, from a historical and logical perspective to systematize the main guidelines of the action oriented approach. Results: The theoretical framework herein described outlines the fundamentals of the action oriented approach. Conclusions: From a pedagogic and linguistic perspective, following the Common European Framework of Reference for Languages in Cuban Higher Education is really advantageous. This conclusion is backed up by highly accepted theories about language learning universal academic community.  Objetivos: En el curso 2016-2017, como parte de la política del Ministerio de Educación Superior en Cuba, la enseñanza de inglés se alineó al Marco común europeo de referencia para las lenguas. El presente artículo tiene como objetivo sustentar teóricamente esta decisión desde el punto de vista de la teoría pedagogía que sustenta dicha concepción. Métodos: Se emplearon métodos como la revisión documental, el análisis y la síntesis, así como la inducción y la deducción desde una perspectiva histórico-lógica para sistematizar las principales orientaciones metodológicos del enfoque orientado a la acción propuesto. Resultados: El marco teórico desarrollado en este texto sintetiza los fundamentos del enfoque orientado a la acción. Conclusiones: Desde una perspectiva pedagógico lingüística existen múltiples ventajas en la alineación al Marco común europeo de referencia para las lenguas, lo que es sustentado en teorías de probada aceptación en la comunidad internacional sobre lenguas añadidas

Level of Resilience and Its Association with Quality of Life in Patients With the Tuberculosis Diabetes Mellitus Binomial

La tuberculosis y la Diabetes Mellitus son las dos grandes pandemias del mundo, con gran repercusión en las poblaciones; la tuberculosis enfermedad infecto-contagiosa y la diabetes mellitus enfermedad crónica-degenerativa que al estar presente en el sujeto, provocan una serie de complicaciones que los limita en sus actividades cotidianas. La presente investigación tiene como objetivo  analizar la asociación entre el nivel de resiliencia y la calidad de vida en pacientes con el binomio de Tuberculosis/Diabetes Mellitus en Jurisdicciones del Valle de Toluca, Estado de México, 2023. La metodologìa aplicada fue un estudio prospectivo, transversal y analítico, se estudiaron un total de 33 pacientes con el binomio TB/DM, a los cuales se les aplicó dos instrumentos: el Cuestionario de Resiliencia González Arratia y Escala de Calidad de vida WHOQOL-BREF, para determinar la asociacion se aplicó  una prueba estadística de Chi cuadrada, con intervalos de confianza del 95%. La recoleccion de los datos fue directamente con los pacientes afectados. Se demostró que no existe asociación estadísticamente significativa entre el nivel de resiliencia y la calidad de vida en los pacientes, sin embrago, se observó que si se afectan su calidad de vida y se deteriora la resiliencia de las personas, por lo que el personal de salud tiene una doble tarea en la atención  de estos pacientes.Tuberculosis and Diabetes Mellitus are the two great pandemics in the world, with great repercussions on populations; tuberculosis is an infectious-contagious disease and diabetes mellitus is a chronic-degenerative disease that, when present in the subject, causes a series of complications that limits them in their daily activities. The objective of this research is to analyze the association between the level of resilience and quality of life in patients with the combination of Tuberculosis/Diabetes Mellitus in Jurisdictions of the Valley of Toluca, State of Mexico, 2023. The methodology applied was a prospective study. cross-sectional and analytical, a total of 33 patients with the TB/DM binomial were studied, to whom two instruments were applied: the González Arratia Resilience Questionnaire and the WHOQOL-BREF Quality of Life Scale, to determine the association a Chi square statistical test, with 95% confidence intervals. Data collection was done directly with the affected patients. It was shown that there is no statistically significant association between the level of resilience and the quality of life in the patients, however, it was observed that their quality of life is affected and the resilience of the people deteriorates, so the staff of Health has a double task in caring for these patients

LA FORMACIÓN DE HABILIDADES INVESTIGATIVAS Y LAS EXIGENCIAS DE LA INDUSTRIA DEL SOFTWARE

RESUMENEs un artículo de revisión bibliográfica. El objetivo es analizar las experiencias educativas asociadas a la formación de las habilidades investigativas y su relación con las exigencias de la industria del software. El génisis de esta investigación viene dado por las exigencias de la industria del software cubano efectuada en la Universidad de las Ciencias Informáticas de Cuba acerca de la formación de estas habilidades en los miembros de los equipos de desarrollo de software. Se aborda las experiencias realizadas en esta universidad. Si bien el proceso de desarrollo de software se debe efectuar por la vía de la investigación científica e ingenieril, se determina como resultado que no se han establecido soluciones que propicie suficientemente la formación de estas habilidades en los sujetos participantes en el proceso de desarrollo de software.PALABRAS CLAVE: Habilidades; formación industrial; enseñanza de la ingeniería.THE TRAINING OF RESEARCH SKILLS AND THE DEMANDS FOR THE SOFTWARE INDUSTRY ABSTRACTIt is a literature review article. The aim is to analyze the educational experiences associated with the formation of research skills and their relationship to the requirements of the software industry. The Genesis of this research is given by the demands of Cuban software industry made at the University Of Information Science Of Cuba. The experience gained in this university is discussed. While the process of software development should be done by way of scientific and engineering research is determined as a result have not been established solutions conducive to the formation of these skills in the participants in the process of software development subjects.KEYWORDS: skills; industrial training; engineering education

Functional coexistence of twin arsenic resistance systems in Pseudomonas putida KT2440

The genome of the soil bacterium Pseudomonas putida KT2440 bears two virtually identical arsRBCH operons putatively encoding resistance to inorganic arsenic species. Single and double chromosomal deletions in each of these ars clusters of this bacterium were tested for arsenic sensitivity and found that the contribution of each operon to the resistance to the metalloid was not additive, as either cluster sufficed to endow cells with high-level resistance. However, otherwise identical traits linked to each of the ars sites diverged when temperature was decreased. Growth of the various mutants at 15°C (instead of the standard 30°C for P. putida) uncovered that ars2 affords a much higher resistance to As (III) than the ars1 counterpart. Reverse transcription polymerase chain reaction of arsB1 and arsB2 genes as well as lacZ fusions to the Pars1 and Pars2 promoters traced the difference to variations in transcription of the corresponding gene sets at each temperature. Functional redundancy may thus be selected as a stable condition - rather than just as transient state - if it affords one key activity to be expressed under a wider range of physicochemical settings. This seems to provide a straightforward solution to regulatory problems in environmental bacteria that thrive under changing scenarios.This study was supported by the BIO program of the Spanish Ministry of Economy and Competitiveness (MINECO), the ST-FLOW and ARISYS Contracts of the EU, the ERANET-IB Program and the PROMT Project of the Autonomous Community of Madrid.Peer reviewe

Partes de plantas leñosas consumidas por cabras.

Se estudiaron 15 unidades de producción familiar caprina de las comunidades de Tehuaxtlay Maninalcingo en la Mixteca poblana de México para conocer las partes principales de plantas leñosas que consumen las cabras. Se utilizaron cinco caprinos marcados yse observaron durante el pastoreo. Se separaron cada una de las partes para su clasificación taxonómica  y herborización. Se aplicó estadística descriptiva para analizar el número de bocados/hora/especie de planta y bocados/hora/parte de la  planta. Se realizó un análisis de varianza simple y se determinaron las diferencias entre medias por la prueba de Duncan (1955). Las principales partes que consumen las cabras enestas zonas son hojas, flores y frutos no maduros. El componente leñoso estuvo representado en mayor cuantía por leguminosas (75 %), donde la hoja alcanza el mayor por ciento (86,6 %).Woody Plants Parts Grazed by Goats.ABSTRACTFifteen domestic goat raising units from Tehuaxtla and Maninalcings communities in Mixteca poblana, México, were studied to find out which woody plants parts were mainly grazed by goats. Five marked goats were sampled and watched while grazing. Each part was taxonomically classified and herborized. A descriptive statistical analysis was performed todetermine the number of mouthfuls/hour/plants pecies and mouth fuls/hour/plantpart. A simple variance analysis (ANOVA) was also performed. Differences among mean values were determined byDuncan’s test. Leaves,flowers, andgreen fruitswere the parts mostgrazed bygoats. With regard to woody components, legumes reachedahigher percent (75 %), particularly their leaves(86 %)

O uso da ivermectina no tratamento da Covid-19: uma revisão da literatura

Introdução: A pandemia do novo coronavírus, iniciada em 2019, uma doença viral que surgiu recentemente e associada à síndrome da angústia respiratória severa (SARS), com repercussão mundial em 2020, na saúde da população e economia global, gerou uma grande problemática em torno de uma nova afecção de saúde sem tratamento efetivo, com alta infectividade. Nesse contexto, com a escassez de medicamento e a necessidade de terapias efetivas, a ivermectina destaca-se pela sua ação antiviral, como possível forma de tratamento medicamentoso. Objetivo: Avaliar na literatura científica mundial acerca do uso da ivermectina como parte do tratamento da COVID-10. Método: Revisão integrativa da literatura, com análise transversal e observacional, com coleta de dados em bases de dados como LILACS, PUBMED e Scielo, com o mecanismo de busca que incluía “ivermectina”, “terapêutica” e “COVID- 19” durante o período de dezembro de 2020 à junho de 2022. Resultados: Foram identificadas 309 citações e 5 estudos foram incluídos. Há poucos ensaios clínicos concluídos todos apresentam amostragem pequena. Discussão: A maioria dos estudos disponíveis na literatura respalda-se em respostas terapêuticas in vitro e a recomendação para uso em humanos tem-se baseado nos achados desses estudos. A questão não pode ser respondida com os estudos atuais, sendo recomendada a realização de ensaios clínicos de qualidade. Conclusões: Não há suporte atualmente na literatura para uso da ivermectina na prevenção ou tratamento COVID-19