Planarity of Whitney Levels

First, we characterize all locally connected continua whose all Whitney levels are planar. Second, we show by example that planarity is not a (strong) Whitney reversible property. This answers a question from Illanes-Nadler book [2]

Gestión educativa y liderazgo pedagógico en una institución educativa, Lima Metropolitana – 2023

La investigación desarrollada presentó como objetivo general determinar la relación existente entre la gestión educativa y el liderazgo pedagógico en una institución educativa, Lima Metropolitana, 2023. El tipo de investigación fue básica, de diseño no experimental, con un enfoque cuantitativo, de nivel correlacional, de corte transversal. La muestra estuvo conformada por 70 docentes de un centro educativo. El instrumento utilizado fue un cuestionario para medir la gestión educativa y el liderazgo pedagógico, siendo evaluados por la prueba de confiabilidad de alfa de Cronbach, expresando un coeficiente de confiabilidad de 0,977 y 0,963 respectivamente. Después de aplicarse los instrumentos los resultados obtenidos fueron que el 8,6% de los participantes consideró moderado la gestión educativa y el 91,4% adecuado y para el liderazgo pedagógico el 5,7% lo consideró moderado y el 94,3% adecuado. En la prueba de hipótesis se utilizó la prueba de Rho de Spearman (rho = 0,311 y p = 0.009 < 0,05) obteniéndose una significancia menor al 0,05. Concluyéndose que existe una relación entre la gestión educativa y el liderazgo pedagógico

Influencia del uso de las TIC en la enseñanza - aprendizaje que mejora la formación contable: caso Facultad de Ciencias Contables – UNMSM

Determina la influencia del uso de las TIC en la enseñanza-aprendizaje para la mejora de la formación contable en la Facultad de Ciencias Contables de la Universidad Nacional Mayor de San Marcos (UNMSM) en Lima-Perú. El enfoque del presente trabajo es cuantitativo exploratorio y descriptivo correlacional no experimental. La técnica que se utilizó fue de encuesta con el instrumento cuestionario de 25 preguntas en escala de Likert (respuesta única). La población se conformó por estudiantes de las 4 escuelas profesionales con un total de 3700 estudiantes. La investigación se basa en una muestra de estudio de 350 estudiantes de la Facultad de Ciencias Contables de la UNMSM. Los resultados determinaron que sí existe relación de la primera variable con la segunda variable, así como todas las dimensiones de la primera variable se relacionan con la segunda variable. En ambas variables, el nivel del coeficiente de correlación de spearman fue de 0.738 y una fiabilidad por Omega de McDonald del cuestionario para ambas variables; para la primera variable, la fiabilidad fue 0.825 y para la segunda variable la fiabilidad fue de 0.936. Además de la primera variable se hizo el análisis de correlación y análisis de regresión para las dimensiones como motivación, capacitación, desarrollo de competencias blandas y dominio de herramientas virtuales

Incidencia del riesgo financiero de los socios activos de la Cooperativa de Ahorro y Crédito Parroquia San Lorenzo de la sede principal de Trujillo en la morosidad. Trujillo - año 2017

La presente investigación tuvo como objetivo establecer la relación que existe entre el riesgo financiero de los socios de la Cooperativa de Ahorro y Crédito Parroquia San Lorenzo y la morosidad, Trujillo -2017. El enunciado del problema fue ¿Cuál es la incidencia del riesgo financiero de los socios activos de la Cooperativa de Ahorro y Crédito Parroquia San Lorenzo de la sede principal de Trujillo en la morosidad al año 2017?; y siendo la hipótesis: La incidencia del riesgo financiero que tienen los socios activos de la Cooperativa de Ahorro y Crédito Parroquia San Lorenzo de la sede principal de Trujillo en la morosidad es fuerte al año 2017. La población objeto de estudio estuvo conformada por 16 753 socios activos de la sede principal de la Cooperativa San Lorenzo ubicada en Trujillo, se aplicó el muestreo probabilístico aleatorio simple obteniendo una muestra de 242 socios. El diseño de investigación aplicado fue explicativo correlacional. Para la recolección de datos se aplicó la encuesta, a partir de ello para la variable independiente se utilizó la herramienta de identificación de nivel de riesgo financiero; para la variable dependiente se utilizó la herramienta de identificación de nivel de morosidad para procesar los datos de la base de datos de la Cooperativa San Lorenzo. En conclusión, se determinó que la correlación existente entre las variables de riesgo financiero y morosidad es moderadamente positiva, resultados que son corroborados con la prueba estadística Chi Cuadrado, cuyo valor es <0,05 lo cual indica que existe una relación directa.The present research had as objective establish the relationship that exist between the financial risk of the partners of the Cooperative of Saving and Credit Parish Saint Lorenzo and the morosity, Trujillo – 2017. The statement of the problem was: What is the incidence of the financial risk of the active partners of the Cooperative of Saving and Credit Parish Saint Lorenzo of the main headquarters of Trujillo in the morosity to the year 2017?; And the hypothesis: The financial risk of the active partners of the Cooperative of Saving and Credit Parish Saint Lorenzo of the main headquarters of Trujillo strongly affects the morosity to the year 2017. The population under study consisted of 16,753 active partners of the main headquarters of the Cooperative Saint Lorenzo located in Trujillo, simple probabilistic random sampling was applied obtaining a sample of 242 members. The applied research design was correlational explanatory. For the data collection we applied the survey, for the variable for the independent variable we used the financial risk level identification tool; for the dependent variable, the morosity level identification tool was used to process data from the San Lorenzo Cooperative database. In conclusion, it was determined that the correlation between the variables of financial risk and morosity is moderately positive, results that are corroborated with the Chi Square test, whose value is <0.05 which indicates that there is a direct relationship.Tesi

Prevalence of the Metabolic Syndrome in Latin America and its association with sub-clinical carotid atherosclerosis: the CARMELA cross sectional study

<p>Abstract</p> <p>Background</p> <p>Metabolic syndrome increases cardiovascular risk. Limited information on its prevalence in Latin America is available. The Cardiovascular Risk Factor Multiple Evaluation in Latin America (CARMELA) study included assessment of metabolic syndrome in 7 urban Latin American populations.</p> <p>Methods</p> <p>CARMELA was a cross-sectional, population-based, observational study conducted in Barquisimeto, Venezuela; Bogota, Colombia; Buenos Aires, Argentina; Lima, Peru; Mexico City, Mexico; Quito, Ecuador; and Santiago, Chile. The prevalence of metabolic syndrome, defined according to the National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III), and associated carotid atherosclerosis were investigated in 11,502 participants aged 25 to 64 years.</p> <p>Results</p> <p>Across CARMELA cities, metabolic syndrome was most prevalent in Mexico City (27%) and Barquisimeto (26%), followed by Santiago (21%), Bogota (20%), Lima (18%), Buenos Aires (17%), and Quito (14%). In nondiabetic participants, prevalence was slightly lower but followed a comparable ranking. Overall, 59%, 59%, and 73% of women with high triglycerides, hypertension, or glucose abnormalities, respectively, and 64%, 48% and 71% of men with abdominal obesity, hypertension, or glucose abnormalities, respectively, had the full metabolic syndrome. Prevalence of metabolic syndrome increased with age, markedly so in women. Mean common carotid artery intima-media thickness (CCAIMT) and prevalence of carotid plaque increased steeply with increasing numbers of metabolic syndrome components; mean CCAIMT was higher and plaque more prevalent in participants with metabolic syndrome than without.</p> <p>Conclusion</p> <p>The prevalence of metabolic syndrome and its components by NCEP ATP III criteria was substantial across cities, ranging from 14% to 27%. CARMELA findings, including evidence of the association of metabolic syndrome and carotid atherosclerosis, should inform appropriate clinical and public health interventions.</p

Stack performance optimization of low power PEM Fuel Cell

For a PEMFC under operation, different causes of performance loss exist. Performance loss can increase when the system is scaled up to higher power. In this work the performance of low-power stacks manufactured in CICY is optimized through studies of the behavior and performance of single cells and stacks of own fabrication. The electrochemical technique polarization curve is used to provide insight into the performance of the cell and stack in operation. The design and materials of the components of the stack were established and the results demonstrate that for cells with catalyst layers deposited by electrospray the maximum power density of the single FC is higher than for cells prepared with the technique of dropping. The increase is significant, from 208 to 270 mW/cm2. Also, the optimization of the hot-pressing process of the MEA resulted in an improvement of the maximum power density up to 310 mW/cm2, while minimizing the canal-rib ratio improved the FC performance with about 16%. Compared to commercial PEMFCs, the performance however, is still low, which is related to the type of materials used

Cardiovascular Risk Awareness, Treatment, and Control in Urban Latin America

on behalf of the CARMELA Study Investigators Effective prevention and treatment of cardiovascular diseases require regular screening for risk factors, high awareness of the condition, effective treatment of the identified risk factors, and adherence to the prescribed treatment. The Cardiovascular Risk Factor Multiple Evaluation in Latin America study was a cross-sectional, population-based, observational study of major cardiovascular risk factors-including hypertension, diabetes, and hypercholesterolemia-in 7 Latin American cities. This report presents data on assessment, diagnosis, extent, and effectiveness of treatment, adherence to treatment, and reasons for nonadherence. Data were collected through household questionnaire-based interviews administered to 5383 men and 6167 women, 25-64 years of age, living in the following cities: Barquisimeto, Venezuela; Bogota, Colombia; Buenos Aires, Argentina; Lima, Peru; Mexico City, Mexico; Quito, Ecuador; and Santiago, Chile. Participants also completed a clinic visit for anthromorphometric and laboratory assessments. Rates of prior diagnosis of hypertension and diabetes were high (64% and 78% of affected individuals, respectively) but relatively low for hypercholesterolemia (41%). The majority of affected individuals (hypercholesterolemia 88%, diabetes 67%, and hypertension 53%) were untreated. Among individuals who were receiving pharmacologic treatment, targets for control of hypertension, diabetes, and hypercholesterolemia were achieved by 51%, 16%, and 52%, respectively. Adherence to treatment was observed in 69% of individuals with hypertension, 63% with diabetes, and 66% with hypercholesterolemia. Forgetfulness was the major cause of nonadherence for all 3 conditions. There is a substantial need for increasing patient education, diagnosis, treatment, adherence, and control of cardiovascular risk factors in the 7 Latin American cities. Keywords: adherence, awareness, blood pressure, cardiovascular risk factors, diabetes, hypercholesterolemia, hypertension, treatment control CLINICAL SIGNIFICANCE (1) Although a majority of individuals knew they had hypertension or diabetes, only 41% were aware of hypercholesterolemia. (2) Forty-seven percent of hypertensive, 33% of diabetic, and 12% of hypercholesterolemic individuals were receiving pharmacological treatment, yet control of these conditions was low

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries