Evidencias psicométricas de Hurlbert Index of Sexual Fantasy (HISF) en universitarios de Nuevo Chimbote

El objetivo principal del estudio es estimar las propiedades psicométricas del Hurlbert Index of Sexual Fantasy (HISF) en universitarios de Nuevo Chimbote. Participaron 385 personas (17 - 30 años), seleccionados mediante el muestreo no probabilístico e intencional. Midiéndose con la versión española del Hurlbert Index of Sexual Fantasy. Se analizó la validez mediante el análisis factorial confirmatorio (AFC), obteniendo dos modelos; modelo 1: 25 reactivos con 6 dimensiones, modelo 2: 23 ítems y 6 factores (Exploratorias, íntimas, Impersonales, Sadomasoquista, Diádico y Solitario). El modelo 1, muestra ajuste en los límites de la aceptación de la estructura (χ²/gl = 4.39; CFI = .92; TLI = .91; SRMR = .100, y RMSEA = .094). Excluyendo los enunciados 1 y 4, debido a que obtuvieron cargas de .11 y .29, por debajo del criterio de aceptación, conduciendo así, a la re-especificación; el modelo 2, reporta ligeras mejoras en el ajuste χ²/gl = 3.71; CFI = .94; TLI = .93; SRMR = .09, y RMSEA = .084, dando aceptación a los índices de ajuste comparativo, pero, no siendo así en el ajuste absoluto. Se hayo la fiabilidad a través del coeficiente de consistencia interna Omega; y de los seis factores, solamente los factores Exploratorias y Diádico obtuvieron valores aceptables en ambos modelos (1 y 2), los restantes factores (Intimas, Impersonales, Sadomasoquista y solitario) reportaron valores que no se aceptan, según los estándares mínimos de aceptación (ω > .70)

Vivienda híbrido

Trabajo de gradoEl proyecto “Vivienda Híbrido” localizado en el barrio Bella Vista Alta del municipio de Soacha, es una propuesta para el mejoramiento y la ampliación de las viviendas existentes en el barrio, con el propósito de acelerar su proceso de consolidación. El proceso realizado para proponer el proyecto ha contemplado un trabajo interdisciplinar de participación ciudadana en la etapa de reconocimiento, diagnosticó, análisis y formulación del problema en el barrio. Este proyecto se desarrolla en una manzana piloto dentro del barrio que reúne las características más generales y comunes para que luego se pueda replicar por todo el barrio. El proyecto contempla la propuesta de mejoramiento inmediato en primer piso, una opción para el futuro y el desarrollo del segundo y tercer piso nuevos en un sistema prefabricado.PregradoArquitect

Congestion control for coded transport layers

The application of congestion control can have a significant detriment to the quality of service experienced at higher layers, especially under high packet loss rates. The effects of throughput loss due to the congestion control misinterpreting packet losses in poor channels is further compounded for applications such as HTTP and video leading to a significant decrease in the user's quality of service. Therefore, we consider the application of congestion control to transport layer packet streams that use error-correction coding in order to recover from packet losses. We introduce a modified AIMD approach, develop an approximate mathematic model suited to performance analysis, and present extensive experimental measurements in both the lab and the “wild” to evaluate performance. Our measurements highlight the potential for remarkable performance gains, in terms of throughput and upper layer quality of service, when using coded transports.United States. Dept. of Defense. Assistant Secretary of Defense for Research & Engineering (United States. Air Force Contract FA8721-05-C-0002

Academic achievementof high schoolstudents who participatein the digital classrooms program

Este estudio analiza el impacto de las aulas digitales en el rendimiento académico en alumnos de educación secundariade una institución educativa del sector público de Colombia. La metodología,de tipo cuantitativo,empleó un enfoque cuasi-experimental con dos tratamientos: un grupo experimental y uno de control, para establecer la diferencia del rendimiento académico de los alumnos participantes en el programa de aulas digitales con respecto a alumnos que no participan en el mismo. Los instrumentos empleados en este estudio fueronla aplicación de un pre-test y un post-test, una encuesta a los alumnos que integraron las aulas digitales y una encuesta al docente participante. Los resultados muestran que los alumnos participantes en el programa observan una mejora en el rendimiento académico en aspectos como la motivación, atención y participación con respecto a los alumnos que siguen unmétodo de enseñanza tradicional; no ocurre igual en las calificaciones obtenidas ya queno se observa una mejora significativa en comparación con los alumnos no participantes. El uso de las aulas digitales mejora la disposición de los alumnos en el desarrollo de las clases, favoreciendo el trabajo colaborativo; facilitando la comprensión de los temas y dinamizando el desarrollo de las actividades de clase.This study analyzes the impact of digital classrooms in academic achievement in highschool students of an educational institution in the public sector of Colombia. The methodology, quantitative, used a quasi-experimental approach with two treatments: an experimental group and a control group, to establish the difference in the academic achievement of students participating in the digital classrooms program regarding students who do not participate in the same. The instruments used consisted ofapplying a pre-test and post-test, a survey to the students who integrated digital classrooms and a survey to the teacher participant. The results show that although the students participating in the program observe an improvement in academic achievement in aspects such as motivation, attention and participation regarding students who follow a traditional theaching method; it does not happen same on test scores as no significant improvement is observed compared to non-participating students. The use of digital classroom improves students' disposal in the development of classes, promoting collaborative work; facilitating the understanding of the issues and boosting the development of classroom activities

LUVMI: an innovative payload for the sampling of volatiles at the Lunar poles

The ISECG identifies one of the first exploration steps as in situ investigations of the moon or asteroids. Europe is developing payload concepts for drilling and sample analysis, a contribution to a 250kg rover as well as for sample return. To achieve these missions, ESA depends on international partnerships. Such missions will be seldom, expensive and the drill/sample site selected will be based on observations from orbit not calibrated with ground truth data. Many of the international science community’s objectives can be met at lower cost, or the chances of mission success improved and the quality of the science increased by making use of an innovative, low mass, mobile robotic payload following the LEAG recommendations. LUVMI provides a smart, low mass, innovative, modular mobile payload comprising surface and subsurface sensing with an in-situ sampling technology capable of depth-resolved extraction of volatiles, combined with a volatile analyser (mass spectrometer) capable of identifying the chemical composition of the most important volatiles. This will allow LUVMI to: traverse the lunar surface prospecting for volatiles; sample subsurface up to a depth of 10 cm (with a goal of 20 cm); extract water and other loosely bound volatiles; identify the chemical species extracted; access and sample permanently shadowed regions (PSR). The main innovation of LUVMI is to develop an in situ sampling technology capable of depth-resolved extraction of volatiles, and then to package within this tool, the analyser itself, so as to maximise transfer efficiency and minimise sample handling and its attendant mass requirements and risk of sample alteration. By building on national, EC and ESA funded research and developments, this project will develop to TRL6 instruments that together form a smart modular mobile payload that could be flight ready in 2020. The LUVMI sampling instrument will be tested in a highly representative environment including thermal, vacuum and regolith simulant and the integrated payload demonstrated in a representative environment

CO2 adsorption on agricultural biomass combustion ashes

Carbon capture and storage has become an alternative means of confronting global warming. Further research and development into adequate and low-cost materials is required for CO2 adsorption technologies.Samples of fly ash, bottom ash and their respective pellets, produced from wheat bran combustion, were characterized and tested to assess their capacity for CO2 adsorption at different temperatures. Neither the ashes nor their pellets were subject to prior thermochemical activation.The bottom ash sample and its pellets showed a higher adsorption capacity for the majority of the temperatures studied. The pelletized bottom ash reached the maximum adsorption capacity (0,07 mmol CO2/g), followed by the non-pelletized bottom ash (0,06 mmol CO2/g); both at an adsorption temperature of 25°C.CO2 adsorption of bottom ash, from the combustion of wheat bran (agricultural biomass), by a physical adsorption mechanism was demonstrated whereas with the fly ash sample, CO2 adsorption by both physical and chemical adsorption mechanisms was identified

Polycyclic aromatic hydrocarbons, brachial artery distensibility and blood pressure among children residing near an oil refinery

BACKGROUND: Polycyclic aromatic hydrocarbons (PAH) are produced by the burning and processing of fuel oils, and have been associated with oxidant stress, insulin resistance and hypertension in adults. Few studies have examined whether adolescents are susceptible to cardiovascular effects of PAHs. OBJECTIVE: To study associations of PAH exposure with blood pressure (BP) and brachial artery distensibility (BAD), an early marker of arterial wall stiffness, in young boys attending three schools in Jeddah, Saudi Arabia in varying proximity to an oil refinery. METHODS: Air samples collected from the three schools were analyzed for PAHs. PAH metabolites (total hydroxyphenanthrenes and 1-hydroxypyrene) were measured in urine samples from 184 adolescent males, in whom anthropometrics, heart rate, pulse pressure, brachial artery distensibility and blood pressure were measured. Descriptive, bivariate and multivariable analyses were performed to assess relationships of school location and urinary PAH metabolites with cardiovascular measures. RESULTS: Total suspended matter was significantly higher (444 ± 143 µg/m(3)) at the school near the refinery compared to a school located near a ring road (395 ± 65 µg/m(3)) and a school located away from vehicle traffic (232 ± 137 µg/m(3)), as were PAHs. Systolic (0.47 SD units, p = 0.006) and diastolic (0.53 SD units, p < 0.001) BP Z-scores were highest at the school near the refinery, with a 4.36-fold increase in prehypertension (p = 0.001), controlling for confounders. No differences in pulse pressure, BAD and heart rate were noted in relationship to school location. Urinary total hydroxyphenanthrenes and 1-hydroxypyrene were not associated with cardiovascular outcomes. CONCLUSIONS: Proximity to an oil refinery in Saudi Arabia is associated with prehypertension and increases in PAH and particulate matter exposures. Further study including insulin resistance measurements, better control for confounding, and longitudinal measurement is indicated

Asistente técnico en sistema constructivo liviano y obra blanca en la torre “praga park”, localizada en el municipio de San José de Cúcuta Norte de Santander

El propósito del proyecto es la asistencia técnica en trabajo dirigido como ASISTENTE TÉCNICO EN SISTEMA COSNTRUCTIVO LIVIANO Y OBRA BLANCA EN LA TORRE “PRAGA PARK”, LOCALIZADA EN EL MUNICIPIO DE SAN JOSE DE CUCUTA NORTE DE SANTANDER. Auxiliar mediante las ideas y entendimientos que se logran adquirir en el transcurso de la carrera, poner en práctica las soluciones a los diferentes asuntos que vayan sucediendo durante el tiempo en la obra. Este tipo de edificación tiene como objetivo generar progreso en la ciudad, dando altos estándares de calidad y confort, permitiendo que muchos habitantes de la ciudad de Cúcuta, tenga la posibilidad de adquirir vivienda, en un lugar exclusivo de la ciudad, con todas las comodidades y excelentes accesos. En este proyecto se realiza una investigación de tipo descriptiva, siguiendo los conceptos definidos anteriormente, la información a recopilar se recoge mediante la ejecución de las actividades a realizar para la incorporación al proyecto que posteriormente se analizan y evalúan.PregradoTecnólogo(a) en Construcciones Civile