Uso del whatsApp y la comunicación en el aprendizaje en estudiantes universitarios de economía de la UCH, 2020

Nuestro objetivo fue determinar la relación entre el uso del WhatsApp y la comunicación en la enseñanza en alumnos de economía de la UCH, 2020. La metodología que se empleó en la investigación en estudio fue hipotético-deductivo de tipo exploratorio, correlacional de diseño no experimental, transversal de, cualitativo y descriptivo, pues su finalidad principal es medir y describir, la correlación entre las dos variables, recolectando información a través de un cuestionario con el fin de probar la hipótesis, con base en la medición numérica y el análisis estadístico. Las variables de estudio son la relación entre el uso del WhatsApp y la comunicación en el aprendizaje. La población fue una muestra censal de 35 alumnos. Con una prueba piloto de 20 individuos de semejantes características, se utilizó la técnica de la encuesta a través del Google form. El cuestionario diseñado por el autor que se basó en la teoría de Calero (2014)., el instrumento fue validado a través del juicio de expertos, mediante la apreciación de tres (3) expertos maestros en docencia e investigación universitaria. Se concluye que, si existe una relación significativa entre uso del WhatsApp y la relación en la comunicación para el aprendizaje, con un p valor de coeficiente de correlación r=0,517. Ésta es significativa moderada

Estudio y diseño de pavimento rígido para la vía urbana de bajo tránsito en la carrera 5 entre las calles 1,2, Y 3 del municipio de Nilo Cundinamarca

Identificar las patologías presentes en el pavimento correspondiente a las vías: Cra 5, entre calles 1ra y 3ra; y la Cll. 2da entre la Cra 5ta y la entrada al cementerio del municipio de Nilo en el Departamento de Cundinamarca, Colombia, mediante un estudio geotécnico para generar alternativas de diseño de acuerdo con los hallazgos.Actualmente se presenta el bajo nivel en la movilidad y servicio de unas vías urbanas del municipio de Nilo-Cundinamarca; por ello se recurre a generar nuevas alternativas de diseño de las estructuras de los pavimentos rígidos de diseño, cuyo tema es de estudio e investigación. Este trabajo realiza una evaluación de los métodos INVIAS y PCA con el fin de confrontar y comparar los conceptos técnicos, académicos y parámetros creados para los diferentes métodos de diseño determinando las diferencias en que ellos se derivan y que al ser aplicados puedan o no desarrollar resultados objetables e inadecuados con respeto a los comportamientos de la situación real de la estructura. El área intervenir la carrera 5 entre las calles 1,2 y 3 con una longitud de 1250 metros la cual se intervendrá por el mal estado de la superficie de las misma encontrándose con puntos críticos con recepción de tránsito debido al alto deterioro de superficie de rodadura.Currently the low level in mobility and service of urban roads in the municipality of Nilo-Cundinamarca is presented; therefore, new design alternatives for rigid design floor structures are generally used, the subject of study and research. This work performs an evaluation of the INVIAS and PCA methods in order to confront and compare the technical, academic concepts and parameters created for the different design methods determining the differences in which they are derived and that when applied may or may not develop objectionable and inadequate results with respect to the behaviors of the actual situation of the structure. The area intervene styling race 5 between streets 1.2 and 3 with a length of 1250 meters which will be intervened due to the poor condition of the surface of the same encountering critical points with traffic reception due to the high deterioration of rolling surface

Estudio y diseño de pavimento rígido para la vía urbana de bajo tránsito en la carrera 5 entre las calles 1,2, Y 3 del municipio de Nilo Cundinamarca

Identificar las patologías presentes en el pavimento correspondiente a las vías: Cra 5, entre calles 1ra y 3ra; y la Cll. 2da entre la Cra 5ta y la entrada al cementerio del municipio de Nilo en el Departamento de Cundinamarca, Colombia, mediante un estudio geotécnico para generar alternativas de diseño de acuerdo con los hallazgos.Actualmente se presenta el bajo nivel en la movilidad y servicio de unas vías urbanas del municipio de Nilo-Cundinamarca; por ello se recurre a generar nuevas alternativas de diseño de las estructuras de los pavimentos rígidos de diseño, cuyo tema es de estudio e investigación. Este trabajo realiza una evaluación de los métodos INVIAS y PCA con el fin de confrontar y comparar los conceptos técnicos, académicos y parámetros creados para los diferentes métodos de diseño determinando las diferencias en que ellos se derivan y que al ser aplicados puedan o no desarrollar resultados objetables e inadecuados con respeto a los comportamientos de la situación real de la estructura. El área intervenir la carrera 5 entre las calles 1,2 y 3 con una longitud de 1250 metros la cual se intervendrá por el mal estado de la superficie de las misma encontrándose con puntos críticos con recepción de tránsito debido al alto deterioro de superficie de rodadura.Currently the low level in mobility and service of urban roads in the municipality of Nilo-Cundinamarca is presented; therefore, new design alternatives for rigid design floor structures are generally used, the subject of study and research. This work performs an evaluation of the INVIAS and PCA methods in order to confront and compare the technical, academic concepts and parameters created for the different design methods determining the differences in which they are derived and that when applied may or may not develop objectionable and inadequate results with respect to the behaviors of the actual situation of the structure. The area intervene styling race 5 between streets 1.2 and 3 with a length of 1250 meters which will be intervened due to the poor condition of the surface of the same encountering critical points with traffic reception due to the high deterioration of rolling surface

Los juegos sociales una herramienta para potenciar la inteligencia emocional en la clase de ingles

Este proyecto investigativo se llevó a cabo durante el proceso de práctica investigativa docente en la Institución Educativa Distrital Marco Tulio Fernández, en el grado cuarto de la jornada tarde. Con esta población se evidenciaron falencias en la Inteligencia emocional por la forma como los estudiantes no manifestaban interés en la interacción con sus compañeros, y a su vez interrumpían el transcurso de las actividades. Por esto se propuso el diseño e implementación de unas actividades basadas en el juego social, por ser éste más incluyente y facilitador de competencias interactivas cognoscitivas, junto con las categorías de la Inteligencia emocional durante las clases de inglés como lengua extranjera. De esta manera se dirigieron los procesos de enseñanza-aprendizaje de la lengua hacia el mejoramiento de las relaciones interpersonales de los estudiantes en el aula.This research project was conducted during research practice teaching at the Educational Institution District Marco Tulio Fernández, in the fourth grade of the day later. With this population flaws in emotional intelligence is evidenced by how students expressed no interest in interacting with peers, and in turn interrupted the course of the activities. Thus the design and implementation of some activities based on the social game is proposed, as this more inclusive and interactive facilitator of cognitive skills, along with categories of emotional intelligence for the English as a foreign language. Thus the teaching-learning language toward improving interpersonal relationships of students in the classroom went

Rarity of monodominance in hyperdiverse Amazonian forests.

Tropical forests are known for their high diversity. Yet, forest patches do occur in the tropics where a single tree species is dominant. Such "monodominant" forests are known from all of the main tropical regions. For Amazonia, we sampled the occurrence of monodominance in a massive, basin-wide database of forest-inventory plots from the Amazon Tree Diversity Network (ATDN). Utilizing a simple defining metric of at least half of the trees ≥ 10 cm diameter belonging to one species, we found only a few occurrences of monodominance in Amazonia, and the phenomenon was not significantly linked to previously hypothesized life history traits such wood density, seed mass, ectomycorrhizal associations, or Rhizobium nodulation. In our analysis, coppicing (the formation of sprouts at the base of the tree or on roots) was the only trait significantly linked to monodominance. While at specific locales coppicing or ectomycorrhizal associations may confer a considerable advantage to a tree species and lead to its monodominance, very few species have these traits. Mining of the ATDN dataset suggests that monodominance is quite rare in Amazonia, and may be linked primarily to edaphic factors

Estimating the global conservation status of more than 15,000 Amazonian tree species

Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under International Union for Conservation of Nature (IUCN) Red List criteria. If confirmed, these results would increase the number of threatened plant species on Earth by 22%. We show that the trends observed in Amazonia apply to trees throughout the tropics, and we predict thatmost of the world’s >40,000 tropical tree species now qualify as globally threatened. A gap analysis suggests that existing Amazonian protected areas and indigenous territories will protect viable populations of most threatened species if these areas suffer no further degradation, highlighting the key roles that protected areas, indigenous peoples, and improved governance can play in preventing large-scale extinctions in the tropics in this century

Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

AimAmazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types.LocationAmazonia.TaxonAngiosperms (Magnoliids; Monocots; Eudicots).MethodsData for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny.ResultsIn the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types.Main ConclusionNumerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran\u27s eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R$^{2}$ = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R$^{2}$ = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions