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1
artículo
Publicado 2017
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The investigation’s fundamental purpose, it was focused to determine the Valor Predictivo of tamizaje’s spot tests in order to VIH;Descriptive investigation epidemiologic, retrospective and transverse; The basic procedures, 2009, 2010 and 2011 came true with the epidemiologic statistics in the sensibility and specificity tests of the years; The more important findings went than: This procedure had great acceptance for part of los/las users, since they surpassed them 33,000 you show in solidum group poblacional and tendency was maintained during the three years, referring to the sensibility average he was equivalent to the 100; Finally we come to an end than tamizaje’s spot tests in order to VIH, they have Value Predictivo Positivo, applied to the population that he proceeded to Salud’s Establishments in the Region Huánuco.
2
artículo
Publicado 2023
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Objective. To evaluate the concurrent, predictive validity and reliability of an algorithm designed to determine the stage of change for HIV testing. Methods. A cross-sectional, correlational, two-stage study was conducted. The first, with 300 young university students, to evaluate the concurrent and predictive criterion validity with variables such as self-efficacy, knowledge about HIV testing and risk perception, measured with instruments that present Cronbach's a between ,73 and ,93. The second in 75 migrants, considered as at-risk population (n = 75), to assess reliability by means of a test-retest. Results. The predominant stages of change for HIV testing in both samples were precontemplation and contemplation. The stages of change correlated with two of the concurrent variables of self-efficacy and knowledge (p < ,01). The regression model was significant (F [3,296] = 53.68, p &...
3
tesis de grado
Publicado 2021
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The predictive philosophy contributes to improving productivity, reducing system failures and reducing unplanned downtime in a non-invasive way to the machine, for which the test bench is based on the German standard VDI2221, using mathematical models to select the materials and the design of the final prototype. The development of the project consists of applying vibration analysis, thermographic analysis and the quality of energy in which each measurement and the correlation that exist between them is shown; in addition, the inverse Fourier transform was used to demonstrate the amplitude and frequency ranges according to the theoretical equation proposed in the Matlab program, it can also be seen the higher order vibrations of 22.1 is located at the same critical point of the SP7 measurement with a temperature of 34.6 ° C and an emissivity of 0.95, likewise the Power quality measureme...
4
artículo
Publicado 2023
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In the present study, the collection of machine learning algorithms of the Weka program was used to predict the bubble pressure of 36 oil samples, determining the accuracy of their results with the 10-fold cross-validation test method. Subsequently, for comparison purposes, the bubble pressures were calculated with the correlation generated in the work from which the samples were taken and their results were more precise than those obtained by the algorithms in 4 of the 7 performance metrics used. Due to this situation, and considering that the correlation was evaluated with the same data with which it was generated, the test method was changed to validation with the training data and the bubble pressures were predicted again. Other things being equal, machine learning was more accurate than correlation on all performance metrics.
5
artículo
Publicado 2024
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Introduction: The adoption of efficient study habits is of great importance to achieve academic success in an increasingly demanding educational landscape. Objective: The relationship between study habits and academic performance among university students has been investigated. Method: The behavior of students regarding on-line tests has been taken as an indicator of study habits. From a stratified sampling, a random sample composed of 160 students enrolled in two first-year groups of the Degree in Business Administration and Management (ADE) at the University of Malaga has been obtained. Several quantitative analysis techniques are applied: descriptive and inferential analysis based on the estimation of non linear and linear regression models. Results: The results obtained suggest that students who delay the time to answer these tests obtain worse grades in these tests and in future exa...
6
artículo
Publicado 2024
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Introduction: The adoption of efficient study habits is of great importance to achieve academic success in an increasingly demanding educational landscape. Objective: The relationship between study habits and academic performance among university students has been investigated. Method: The behavior of students regarding on-line tests has been taken as an indicator of study habits. From a stratified sampling, a random sample composed of 160 students enrolled in two first-year groups of the Degree in Business Administration and Management (ADE) at the University of Malaga has been obtained. Several quantitative analysis techniques are applied: descriptive and inferential analysis based on the estimation of non linear and linear regression models. Results: The results obtained suggest that students who delay the time to answer these tests obtain worse grades in these tests and in future exa...
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8
artículo
Publicado 2026
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Introduction: High-altitude environments predispose individuals to hypertensive disorders during pregnancy; however, the lack of laboratory facilities often limits accurate diagnosis. Objective: To determine the validity of the FullPIERS scale as a prognostic tool for severe preeclampsia in populations living at high altitudes. Materials and Methods: A cross-sectional diagnostic validation study was conducted. Medical records from 284 pregnant women with preeclampsia treated at a high-altitude hospital were reviewed. The gold standard was a clinical diagnosis, and the FullPIERS scale aimed to estimate severity based on gestational age, chest pain, platelet count, creatinine levels, aspartate aminotransferase concentrations, and oxygen saturation, using a 30% risk threshold from the FullPIERS calculator. Results: In the high-altitude hospital, 60% of pregnant women with preeclampsia devel...
9
artículo
Publicado 2022
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Objective: To compare the SatO2/FiO2 rate against PaO2/FiO2 rate for predicting mortality in COVID-19 patients in a high altitude hospital. Materials and methods: This is an observational, retrospective, and cross-sectional study, where sensitivity(S), specificity (Sp), positive predictive value (PPV), and negative predictive value (NPV) for both rates were compared. Results: The average age of COVID-19 patients was 62.2 ± 12.8 years. Three quarters (73.7 %) of all patients were male, most frequent comorbidities were diabetes mellitus (21.6 %), and high blood pressure (27.2 %). On the other hand, average SatO2/FiO2 rate was 234.9 ± 121.9, and PaO2/FiO2 was 169.7 ± 84, and 30.5 % of all patients died. A significant relationship between the aforementioned rates and mortality was evidenced. The cutoff point for SatO2/FiO2 was 114.4, with 43.1 % sensitivity, 91.2 % specificity, 68.3 % pos...
10
artículo
Preeclampsia is a major cause of maternal morbidity and mortality worldwide. The incidence of preeclampsia has increased in the past decade, which has been attributed to various predisposing factors. Despite decades of research into the condition, the ability of clinicians to predict it prior to the onset of symptoms has not improved significantly. No single screening test has gained widespread acceptance into clinical practice. Combinations of biochemical and ultrasonographic markers improve the performance of early prediction of preeclampsia. Screening with a combination of maternal risk factors, uterine artery Doppler, mean arterial pressure, maternal serum pregnancy associated plasma protein-A, and placental growth factor can identify about 95% of cases of early onset preeclampsia. Interestingly, intense research has unveiled the names of some important biomolecules which play an inf...
11
artículo
Objective. Determine the study of the diagnostic test of the prediction nomogram for the risk of preeclampsia. Material and method. A nested case-control analytical observational study and validation of the proposed prediction index was performed with the design of a nomogram. It was performed at the Guillermo Almenara Irigoyen-EsSalud Hospital, Lima-Peru, and Fetal Medicine Unit. Participated asymptomatic pregnant patients of the Almenara-EsSalud Healthcare Network between the first or second trimester of pregnancy that developed or not at the end of the follow-up severe preeclampsia. The clinical, laboratory and Doppler predictors of the uterine arteries were evaluated. The data obtained were analyzed under a multivariate binary logistic regression model to construct the prediction equation and the prediction nomogram. In addition, the ROC curve analysis was performed. Results. Th...
12
artículo
Objective. Determine the study of the diagnostic test of the prediction nomogram for the risk of preeclampsia. Material and method. A nested case-control analytical observational study and validation of the proposed prediction index was performed with the design of a nomogram. It was performed at the Guillermo Almenara Irigoyen-EsSalud Hospital, Lima-Peru, and Fetal Medicine Unit. Participated asymptomatic pregnant patients of the Almenara-EsSalud Healthcare Network between the first or second trimester of pregnancy that developed or not at the end of the follow-up severe preeclampsia. The clinical, laboratory and Doppler predictors of the uterine arteries were evaluated. The data obtained were analyzed under a multivariate binary logistic regression model to construct the prediction equation and the prediction nomogram. In addition, the ROC curve analysis was performed. Results. Th...
13
artículo
El propósito del presente estudio consiste en brindar a la comunidad psicológica y pedagógica un test que permite evaluar las operaciones básicas para el aprendizaje de las matemáticas y a su vez planificar las estrategias correctivas. Se ha tomado en cuenta los aportes de Jean Piaget en lo concerniente al desarrollo de la función cognitiva integrada por el pensamiento lógico y la organización de la realidad, El test se probó con una muestra del 1008 estudiantes que cursan el nivel secundario cuyas edades van desde los 12 hasta los 17 años con 11 meses, de colegios estatales de Lima, Para la Confiabilidad se utilizó el método de las mitades, se encontró coeficientes R de Spearman Brown de 0,81 hasta 0,94, siendo los índices de fiabilidad de 0,90 hasta 0,97. También se estimó la con fiabilidad por el método de la consistencia interna utilizando la ecuación de Kuder-Richa...
14
artículo
The purpose of the present study consists on offering to the psychological and pedagogic community a test that allows to evaluate the basic operations for the learning of the mathematics and in turn to plan the corrective strategies. He/she has taken into account the contributions of Jean Piaget in the concerning thing lo the development of the Cognitive integrated function by the logical thought and the organization of the reality. The test was proven with a sample of the 1008 students that you/they study the secondary level whose ages go from the 12 to the 17 ages with 11 months, of slate schools of Lima. For the Dependability the method of the halves was used, he/she was coefficients R of Spearman Brown 0,81 up to 0,94, being the indexes of reliability of 0,90 up to 0,97. He/she was also considered the dependability for the method of the internal consistency using the equation of Kude...
15
artículo
The aim of this study was to determine the possibility of predicting Ehrlichia canis infections based on canine eye lesions without apparent systemic clinical signs suggestive of Erlichia infection. A total of 30 patient dogs taken to the Veterinary Clinic of the Cooperative University of Colombia (Ibagué) for ocular alterations were evaluated. A complete ophthalmic examination was performed. Those with uveitis or retinal hemorrhages were subjected to the SNAP test for Ehrlichia canis. The main reason for ophthalmic consultation of patients positive for E. canis was ocular secretion (33.3%), followed by red eye (30%) and loss of vision (20%). In the ophthalmic examination, the most frequent ocular alteration was low intraocular pressure (IOP) (93.3%) and conjunctival hyperemia (63.3%). Moreover, 46.7% had an increase in ocular secretion and 40% were positive to keratoconjunctivitis sicc...
16
artículo
The aim of this study was to determine the possibility of predicting Ehrlichia canis infections based on canine eye lesions without apparent systemic clinical signs suggestive of Erlichia infection. A total of 30 patient dogs taken to the Veterinary Clinic of the Cooperative University of Colombia (Ibagué) for ocular alterations were evaluated. A complete ophthalmic examination was performed. Those with uveitis or retinal hemorrhages were subjected to the SNAP test for Ehrlichia canis. The main reason for ophthalmic consultation of patients positive for E. canis was ocular secretion (33.3%), followed by red eye (30%) and loss of vision (20%). In the ophthalmic examination, the most frequent ocular alteration was low intraocular pressure (IOP) (93.3%) and conjunctival hyperemia (63.3%). Moreover, 46.7% had an increase in ocular secretion and 40% were positive to keratoconjunctivitis sicc...
17
artículo
This study focuses on the factors that lead individuals to create new ventures. It draws on the social psychology literature and applies the theory of planned behavior to understand and predict nascent entrepreneurship. To test the integrity of this theory in predicting entrepreneurial behavior, this study uses data from the Global Entrepreneurship Monitor (GEM) research program in Peru. The findings of the study provide partial support for the theory. Implications of these findings are discussed.
18
artículo
The objective of the study was to determine the predictive value of personality traits according to the Mexican model of the Five Personality Factors in the Burnout Syndrome (BOS) and its dimensions from the Gil-Monte model. Three hundred and seventy-five basic education teachers from Mexico City took part in it. The sampling was intentional, non-probabilistic with cross-sectional and correlational design. The Spanish Burnout Syndrome inventory and the Mexican Five Personality Factors scale were used. Pearson's Correlation Test and a stepwise linear regression model were employed for the analysis. With the exception of Emotional Control and Enthusiasm towards work (r2=.087; p>0.05), the results found significant correlations of the Five Mexican personality factors and BOS, negative in the case of personality traits and Psychic Burnout, Indolence, and Guilt; and positive among personal...
19
artículo
The objective of the study was to determine the predictive value of personality traits according to the Mexican model of the Five Personality Factors in the Burnout Syndrome (BOS) and its dimensions from the Gil-Monte model. Three hundred and seventy-five basic education teachers from Mexico City took part in it. The sampling was intentional, non-probabilistic with cross-sectional and correlational design. The Spanish Burnout Syndrome inventory and the Mexican Five Personality Factors scale were used. Pearson's Correlation Test and a stepwise linear regression model were employed for the analysis. With the exception of Emotional Control and Enthusiasm towards work (r2=.087; p>0.05), the results found significant correlations of the Five Mexican personality factors and BOS, negative in the case of personality traits and Psychic Burnout, Indolence, and Guilt; and positive among personal...
20
artículo
Publicado 2021
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The purpose of the study was to describe the analytical bioevaluation of the predictive model of science in aquatic ecotoxicology. From the Sciencedirect website, 18 scientific reviews, 72 scientific articles, six encyclopedias and 32 book chapters corresponding to 11 scientific journals were analyzed. Two descriptors were proposed: 1st) of the field conditions which referred to the natural development of organisms and, 2nd) of the laboratory conditions where three types of tests were considered: A) potential of toxicity, B) of growth and, C) transformation. Although, the advantage of field conditions is the disadvantage in laboratory conditions, it is essential that bio-assessments are combined for ecosystem services to be sustainable in society. From various bioevaluations of field and laboratory conditions, data that have statistical significance and its argumentation constitute new p...
