Evaluación de habilidades en matemática y comprensión lectora en estudiantes que ingresan a pedagogía en educación básica: un estudio comparativo en dos universidades del Consejo de Rectores Math reasoning and reading comprehension skills assessment of entrant students from the primary school teaching program: a comparative study in two universities of the Council of Rectors (CRUCH)

El artículo presenta los resultados de la evaluación realizada a estudiantes que ingresan a la carrera de Pedagogía en Educación General Básica, de dos instituciones universitarias regionales pertenecientes al Consejo de Rectores en Chile, en habilidades de razonamiento y conocimiento matemático y comprensión lectora. Corresponde a una evaluación diagnóstica de tipo descriptiva y comparativa de corte transversal, a una población compuesta por 80 alumnos, a quienes se les aplicó instrumentos debidamente validados con un Alfa de Cronbach &#945;=0.82 en Matemática y de &#945;=0.64 en Comprensión Lectora. Para el análisis de la información, se utilizaron métodos descriptivos univariados y multivariados. Los resultados evidencian, en general, un dominio descendido en ambas habilidades o por debajo de lo esperado al ingreso de la Educación Superior, especialmente en las habilidades matemáticas.<br>Based on a comparative cross-assessment diagnosis conducted in two Council of Rectors (CRUCH) universities in southern Chile in 2009, this paper shows the results of Math reasoning and reading comprehension skills assessment of entrant students from the Primary School Teaching Program. Data for this paper comes from a test with Cronbach's Alpha reliability of 0,82 in Math and 0,64 in Reading Comprehension, which was applied to a sample of 80 students. Data analysis required one-variable and multivariable descriptive methods and the results dramatically showed either a low command of both skills or far lower than expected performance for entrant students from the Primary School Teaching Program, especially in Maths

Correlations between thermal environment and egg quality of two layer commercial strains

Heat stress limits the productivity of laying hens, as reflected by egg production and egg quality. The present study aimed at showing the correlations between egg quality parameters and environmental variables recorded on the day eggs were laid and on the previous days. Birds were housed in battery cages in a commercial poultry house. Main component analyses were used to verify associations between environmental and production variables, and Pearson's linear correlation tests were used to further investigate those associations. Analyses were carried out separately for to layer strains, Dekalb® White and Hy-Line® w36, and the variables egg weight (g), eggshell weight (g), specific gravity (g/cm³) and eggshell percentage (%) were compared with the environmental variables of the same day of the production, and one, two, three, and four days before egg production. Sound intensity measured inside the houses was positively associated with the quality parameters of eggs produced on the next day. Thermal environmental variables affected the egg quality differently in each strain, particularly air temperature, internal roof tile temperature, relative humidity, and air velocity. Ammonia concentration measured inside the houses was lower than 1ppm, and did not affect production performance