Caracterización de la presentación del concepto de distribución de frecuencias en libros de texto de grado sexto en el municipio de Florencia-Caquetá

La presente ponencia se deriva de la investigación realizada durante el segundo semestre de 2017 con sexto semestre de la Licenciatura en Matemáticas y Física, en el espacio académico Estadística y Probabilidad, en el cual se identificaron falencias en la conceptualización e interpretación de distribución de frecuencias, generado posiblemente por la presentación en los libros de texto que conlleva a la réplica de esta misma forma por parte de los profesores. La pregunta de investigación giró en torno a cómo presentan los libros de texto del grado sexto el tema Distribución de Frecuencias en las instituciones educativas urbanas del municipio de Florencia-Caquetá. La investigación se ubica en la teoría de Transposición Didáctica y el análisis de contenido. Se realizaron encuestas a docentes y estudiantes del grado sexto. La triangulación de la información fue el método de análisis. Se encontró que los profesores dan relevancia a los temas relacionados con las distribuciones de frecuencia pero no a este, y le dedican poco tiempo a su orientación, los libros de texto abordan de manera aritmética el concepto de distribución de frecuencias y la enmarcan más en la concepción matemática

Dimensionality and reliability of the online version of the Patient Health Questionnaire-4 (PHQ-4) in a large Colombian sample : Results from the PSY-COVID study

Altres ajuts: acords transformatius de la UABThe Patient Health Questionnaire-4 (PHQ-4) is an ultra-brief screening instrument to measure depressive and anxiety symptoms. This study evaluated the dimensionality and reliability of the online version of the PHQ-4 in a large sample of the general population in Colombia. Data were collected during the first phase of lockdown measures occasioned by the COVID-19 pandemic. A total of 18,061 adult participants completed the online version of the PHQ-4. The characteristics of the items and subscales were explored. Dimensionality was examined using confirmatory factor analysis (CFA), including an examination of invariance (configural, metric, and scalar) across socio-demographic characteristics. Reliability indices were computed and known-groups validity was addressed by estimating associations between PHQ-4 scores and socio-demographic characteristics. The CFA showed significantly adequate fit indices for the expected two-factor structure, being invariant across gender, age, income level, education level, and region. Internal consistency was satisfactory for the PHQ-2 (α =.83), the GAD-2 (α =.79), and the PHQ-4 (α =.86). Higher scores on depressive (PHQ-2), anxiety (GAD-2), and psychological distress (PHQ-4) symptoms in females and young people, and those respondents with lower income, unemployed, and lower level of education were observed. The findings indicate that the PHQ-4 is a reliable scale for depressive and anxiety symptoms among adult Colombian people, being recommendable this tool for online surveys

Epidemiology of intra-abdominal infection and sepsis in critically ill patients: “AbSeS”, a multinational observational cohort study and ESICM Trials Group Project

Purpose: To describe the epidemiology of intra-abdominal infection in an international cohort of ICU patients according to a new system that classifies cases according to setting of infection acquisition (community-acquired, early onset hospital-acquired, and late-onset hospital-acquired), anatomical disruption (absent or present with localized or diffuse peritonitis), and severity of disease expression (infection, sepsis, and septic shock). Methods: We performed a multicenter (n = 309), observational, epidemiological study including adult ICU patients diagnosed with intra-abdominal infection. Risk factors for mortality were assessed by logistic regression analysis. Results: The cohort included 2621 patients. Setting of infection acquisition was community-acquired in 31.6%, early onset hospital-acquired in 25%, and late-onset hospital-acquired in 43.4% of patients. Overall prevalence of antimicrobial resistance was 26.3% and difficult-to-treat resistant Gram-negative bacteria 4.3%, with great variation according to geographic region. No difference in prevalence of antimicrobial resistance was observed according to setting of infection acquisition. Overall mortality was 29.1%. Independent risk factors for mortality included late-onset hospital-acquired infection, diffuse peritonitis, sepsis, septic shock, older age, malnutrition, liver failure, congestive heart failure, antimicrobial resistance (either methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, extended-spectrum beta-lactamase-producing Gram-negative bacteria, or carbapenem-resistant Gram-negative bacteria) and source control failure evidenced by either the need for surgical revision or persistent inflammation. Conclusion: This multinational, heterogeneous cohort of ICU patients with intra-abdominal infection revealed that setting of infection acquisition, anatomical disruption, and severity of disease expression are disease-specific phenotypic characteristics associated with outcome, irrespective of the type of infection. Antimicrobial resistance is equally common in community-acquired as in hospital-acquired infection

Fatigue Damage Initiation in Waspaloy Under Complex Cyclic Loading

The low-cycle fatigue damage initiation in Waspaloy under complex cyclic loading (out-of-phas

The multilingual business handbook: a guide to international correspondence, 2nd ed

A multilingual glossary of commercial expressions for anyone needing to write or understand business communication in English, French, German, Spanish and Italian. Contents cover sales and distribution, agencies, customs, property - sales and rentals, hotel and travel reservations and many other subjects. Also included is vocabulary related to banking, post office, using the telephone and a list of common abreviations for each language. Each expression has a key letter and number enabling the user to quickly find the corresponding expression in any of the other languages. Each language section has its own index