Estimación de la radiación solar diaria para la ciudad de Bagua, región Amazonas, Perú

The solar radiation that reaches the earth is the fundamental source of renewable energy in nature, therefore, knowing the local solar radiation is essential for many applications. The objective of this study was to model the behavior of daily solar radiation in the city of Bagua, which allows us to plan and design strategies oriented towards the use of the primary source of renewable energy. For this, the Fernández-Zayas model has been used, which considers the parameters of the monthly  average of the maximum global solar radiation and the length of the solar day. The methodology is of the analytical type and consisted of three phases: The first, data collection and filtering of the meteorological station of the Toribio Rodríguez de Mendoza National University of Amazonas that is located in the study area; in the second, the model was implemented using the MATLAB / GUI interface, obtaining the simulation of solar radiation; and in the third, the model was validated by error goodness statistics and table t. The estimate of daily solar radiation was calculated and discussed. The results obtained are useful for any application of solar energy in the city of Bagua, Amazonas region, Peru.La radiación solar que llega a la tierra, es la fuente de energía renovable fundamental en la naturaleza, por ende, conocer la radiación solar local es esencial para muchas aplicaciones. El objetivo de este estudio fue modelar el comportamiento de la radiación solar diaria en la ciudad de Bagua, el cual nos permita planificar y diseñar estrategias orientadas hacia el aprovechamiento de la fuente primaria de energía renovable. Para ello, se ha empleado el modelo de Fernández-Zayas, el cual considera los parámetros del promedio mensual de la radiación solar global máxima y la longitud del día solar. La metodología es del tipo analítica y consistió en tres fases:La primera, recolección y depuración de datos de la estación meteorológica de la Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas que se encuentra en el área de estudio; en la segunda, se implementó el modelo utilizando la interfaz MATLAB/GUI, obteniendo la simulación de radiación solar; y en la tercera, se validó el modelo mediante los estadísticos de bondad de error y la tabla t. La estimación de la radiación solar diaria se calculó y se discutió. Los resultados obtenidos son útiles para cualquier aplicación de la energía solar en la ciudad de Bagua, región Amazonas, Perú

Influencia de los sistemas de producción y pisos altitudinales en la composición bioquímica y rendimiento del pasto nicarión (setaria sphacelata)

La investigación tuvo como objetivo evaluar el efecto de sistemas de producción y pisos altitudinales en la composición bioquímica y rendimiento del pasto nicarión (Setaria sphacelata) en el distrito de Molinopampa, en dos pisos altitudinales entre los 2000-2400 m s.n.m. y 2401-2800 m s.n.m. En cuanto a los sistemas de producción se consideró el sistema silvopastoril y el sistema de pastoreo a campo abierto. En cada piso altitudinal se identificaron tres parcelas con pasto nicarión bajo sistema silvopastoril y sistema de pastoreo de campo abierto, resultando en 12 parcelas con tres repeticiones. Los parámetros de evaluación fueron el rendimiento (Kg/m2) y el aporte nutricional como proteína, fibra cruda, almidón, azúcares, fibra detergente neutra (FDN) y fibra detergente ácida (FDA). Los datos obtenidos fueron procesados mediante la prueba t-Student al 5% (p&lt;0,05) de significancia. Entre los sistemas de producción se encontraron diferencias significativas en el rendimiento, proteínas, azúcares y la fibra detergente neutra. En cuanto al piso altitudinal se encontraron diferencias significativas en la fibra cruda, azúcares y fibra detergente ácida.</p

Patterns and universals of mate poaching across 53 nations : the effects of sex, culture, and personality on romantically attracting another person’s partner

As part of the International Sexuality Description Project, 16,954 participants from 53 nations were administered an anonymous survey about experiences with romantic attraction. Mate poaching--romantically attracting someone who is already in a relationship--was most common in Southern Europe, South America, Western Europe, and Eastern Europe and was relatively infrequent in Africa, South/Southeast Asia, and East Asia. Evolutionary and social-role hypotheses received empirical support. Men were more likely than women to report having made and succumbed to short-term poaching across all regions, but differences between men and women were often smaller in more gender-egalitarian regions. People who try to steal another's mate possess similar personality traits across all regions, as do those who frequently receive and succumb to the poaching attempts by others. The authors conclude that human mate-poaching experiences are universally linked to sex, culture, and the robust influence of personal dispositions.peer-reviewe

Are men universally more dismissing than women? Gender differences in romantic attachment across 62 cultural regions

The authors thank Susan Sprecher (USA), Del Paulhus (Canada), Glenn D. Wilson (England), Qazi Rahman (England), Alois Angleitner (Germany), Angelika Hofhansl (Austria), Tamio Imagawa (Japan), Minoru Wada (Japan), Junichi Taniguchi (Japan), and Yuji Kanemasa (Japan) for helping with data collection and contributing significantly to the samples used in this study.Gender differences in the dismissing form of adult romantic attachment were investigated as part of the International Sexuality Description Project—a survey study of 17,804 people from 62 cultural regions. Contrary to research findings previously reported in Western cultures, we found that men were not significantly more dismissing than women across all cultural regions. Gender differences in dismissing romantic attachment were evident in most cultures, but were typically only small to moderate in magnitude. Looking across cultures, the degree of gender differentiation in dismissing romantic attachment was predictably associated with sociocultural indicators. Generally, these associations supported evolutionary theories of romantic attachment, with smaller gender differences evident in cultures with high–stress and high–fertility reproductive environments. Social role theories of human sexuality received less support in that more progressive sex–role ideologies and national gender equity indexes were not cross–culturally linked as expected to smaller gender differences in dismissing romantic attachment.peer-reviewe

Envejecimiento de la población

&bull;Actividades b&aacute;sicas de la vida diaria en personas mayores y factores asociados &bull;Asociaci&oacute;n entre depresi&oacute;n y posesi&oacute;n de mascotas en personas mayores &bull;Calidad de vida en adultos mayores de Santiago aplicando el instrumento WHOQOL-BREF &bull;Calidad de vida en usuarios con enfermedad de Parkinson, demencia y sus cuidadores, comuna de Vitacura &bull;Caracterizaci&oacute;n de egresos hospitalarios de adultos mayores en Puerto Natales (2007-2009) &bull;Comportamiento de las patolog&iacute;as incluidas como GES para el adulto mayor atendido en un Cesfam &bull;Contribuci&oacute;n de vitaminas y minerales a las ingestas recomendadas diarias en ancianos institucionalizados de Madrid &bull;Estado de salud oral del paciente inscrito en el Programa de Visita Domiciliaria &bull;Evaluaci&oacute;n del programa de discapacidad severa en Casablanca con la matriz de marco l&oacute;gico &bull;Factores asociados a satisfacci&oacute;n vital en una cohorte de adultos mayores de Santiago, Chile &bull;Pauta instrumental para la identificaci&oacute;n de riesgos para el adulto mayor autovalente, en su vivienda &bull;Perfil farmacol&oacute;gico del paciente geri&aacute;trico institucionalizado y posibles consecuencias en el deterioro cognitivo &bull;Programa de cuidados paliativos y alivio del dolor en Puerto Natales &bull;Rehabilitaci&oacute;n mandibular implantoprot&eacute;sica: efecto en calidad de vida relacionada con salud bucal en adultos mayores &bull;Salud bucodental en adultos mayores autovalentes de la Regi&oacute;n de Valpara&iacute;so &bull;Transici&oacute;n epidemiol&oacute;gica y el estudio de carga de enfermedad en Brasi

Narcissism and the strategic pursuit of short-term mating : universal links across 11 world regions of the International Sexuality Description Project-2.

Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating

Narcisismo y búsqueda estratégica del emparejamiento a corto plazo a través de las culturas: Enlaces omnipresentes a través de 11 regiones mundiales del Proyecto de la descripción de la sexualidad internacional 2

Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating.Estudios previos, en primer lugar a través de las muestras de culturas occidentales, han documentado asociaciones sistemáticas del narcisismo subclínico con múltiples indicadores de estrategias del emparejamiento a corto plazo (p. ej. sociosexualidad ilimitada, infidelidad, caza de pareja). En este estudio se han usado respuestas de la encuesta transcultural de 30.470 personas de 53 naciones de 11 regiones mundiales (América del Norte, América del Sur/América Central, Europa del Norte, Europa del Oeste, Europa del Este, Europa del Sur, Oriente Próximo, África, Asia del Sur/Sudoeste de Asia, Asia del Este y Oceanía) para evaluar si el narcisismo (medido por el Inventario de Personalidad Narcisista; NPI) se asocia panuniversalmente con los indicadores del emparejamiento a corto plazo, tanto en la dirección, como en la intensidad. Los resultados sugieren que el narcisismo (incluidos muchos aspectos suyos medidos por el NPI) tiene las mismas asociaciones básicas con los rasgos de personalidad relacionados con el sexo (p. ej. extraversión alta) y con los resultados sexuales claves (p. ej. búsqueda más activa de las estrategias del emparejamiento a corto plazo) a través de las 11 mayores regiones mundiales del PDSI 2. La discusión se enfoca en las implicaciones y limitaciones del estudio actual