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https://purl.org/pe-repo/ocde/ford#5.02.04
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ODS 3: Salud y bienestar. Garantizar una vida sana y promover el bienestar de todos a todas las edades
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1
artículo
Publicado 2025
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Objective: The objective of this study was to demonstrate whether a gel formulation developed with collagen extracted from fish scales is stable, functional, and safe for cosmetic applications. Material and Methods: A gel formulation derived from fish scales was developed, and physicochemical parameters (pH, viscosity, protein, lipid, carbohydrate, ash, and moisture content) were analyzed following AOAC (Association of Official Analytical Chemists) methods. Additionally, microbiological aspects (mesophilic bacteria, coliforms, molds, yeasts, and Salmonella spp.) were evaluated, and a sensory test was conducted with consumers. Results: The results showed a pH of 6.8 and a viscosity of 150 cP, which are suitable for stability. Protein content was 25%, carbohydrates reached 60.2%, and lipids were 5.5%. No Salmonella spp. was detected, and other microbiological parameters remained within per...
2
artículo
On this occasion, the amount of agricultural waste was estimated, to be used as raw material in a biorefinery. The country Ecuador was taken as a case study, as it is a country with great activity of this type. A time series for annual agricultural production was constructed using the ARIMA model through RStudio software. For the main crops, the number of residues generated was estimated and after that, an analysis of vector networks was carried out through the GRASS GIS software. The results indicated that the main apparent source of waste is the banana, from which leaves, peel, rachis, and stem would be obtained, useful in the production of bioproducts. Using the GIS, it was determined that the largest number of crops are found in two regions of the country, with distances greater than 500 meters from the road network. The characteristics of Ecuador make possible the future installatio...
3
artículo
On this occasion, the amount of agricultural waste was estimated, to be used as raw material in a biorefinery. The country Ecuador was taken as a case study, as it is a country with great activity of this type. A time series for annual agricultural production was constructed using the ARIMA model through RStudio software. For the main crops, the number of residues generated was estimated and after that, an analysis of vector networks was carried out through the GRASS GIS software. The results indicated that the main apparent source of waste is the banana, from which leaves, peel, rachis, and stem would be obtained, useful in the production of bioproducts. Using the GIS, it was determined that the largest number of crops are found in two regions of the country, with distances greater than 500 meters from the road network. The characteristics of Ecuador make possible the future installatio...
4
tesis doctoral
Publicado 2018
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El objetivo de este trabajo es presentar un estudio de inferencia y diagnóstico de una extensión de la familia de distribución vitalicia propuesta por Birnbaum y Saunders. Esta extensión se obtiene considerando una distribución sesgada-elíptica en lugar de la distribución normal. Específicamente, en este trabajo se desarrolla un tipo de distribución Birnbaum-Saunders (BS) basado en mezclas a escala de distribuciones asimétricas normales (SMSN). La familia resultante de distribuciones de por vida representa una extensión robusta de la distribución habitual de BS. Con base en esta familia, se reproduce las propiedades habituales de la distribución BS y se presenta un método de estimación basado en el algoritmo EM. Además, se presentan modelos de regresión asociados con las distribuciones BS (basadas en mezclas a escala de skew-normal), que se desarrollan como una extensió...
5
artículo
Publicado 2020
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Small-scale fishing, such as that of the Tahuayo river basin (CRT) has been little studied despite its importance as a protein supply for the region. This article presents the fisheries' main ecological features in the CRT based on of an analysis of fish landings. Between August 2016 and July 2017, the richness and composition of species, biomass and catches per unit of effort (CPUE) were evaluated, by hydrological periods, aquatic environments and communities. The captures presented 62 species, grouped into 23 families and 7 orders, with the Pimelodidae family being the most diverse (12 species). Species richness was very similar between hydrological periods and between aquatic environments. The total landing amounted to 13,805.38 kg, where 17 species represented 80.5% of the biomass. More than 50% of the biomass was landed in periods of...
6
artículo
Publicado 2024
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The present study has two objectives. On the one hand, the psychometric properties of the Wagnild and Young (1993) Resilience Scale are analyzed, and on the other hand, the values obtained were compared according to sex and age of the participants. The sample were 333 university students from a private university in Arequipa (Peru), of which approximately half were men and the other half women, with an average age of 17 years. The results of confirmatory factor analysis suggest a four-factor structure: Interest, Energy and strength, Purpose identity and Decision, with adequate goodness of fit indices. However, for the dimensions of Decision and Energy and strength, internal consistency had inadequate values. Comparative data indicate that women and 18-year-old students have higher scores on some resilience factors than men and 16-year-old students. Results suggest the need for extendi...
7
artículo
Publicado 2010
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Antes de haberse formalizado el concepto del Análisis Multiresolución (AMR), la construcción de bases orto normales de ondículas debió ser demasiado dificultoso. Por ello, el estudio del AM R adquiere importancia y por consiguiente la construcción de Ondículas se hace viable. En la construcción de una ondicula Ψ, debemos determinar una función escala Φ, para luego construir su Análisis Multiresolución asociado; en seguida se pasa a construir Ψ, con propiedades deseadas para las aplicaciones.
8
artículo
Publicado 2010
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Before the concept has been formalized Analysis Multiresolution AMR, base construction orthonormal wavelet should be too difficult. For Therefore, the study of AM R becomes important and therefore construction of Wavelets is viable. In the construction of a wavelet Ψ, we determine a scale function Φ, then build your Analysis Associated multiresolution; soon passed has built Ψ with desired properties for applications.
9
artículo
Publicado 2019
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Objective: To determine the psychometric properties of the scale of socio-emotional skills (ECSE) for workersin public and private institutions in Lima Este. Maethods: The study was not experimental transversal design,further characterized by systematic, controlled, empirical and critical. Non-probability sampling was used for theconvenience of researchers, based on criteria previously established inclusion and exclusion, the sample consistedof 186 workers, between the ages of 21 and 65. The validation process of the test comprised an analysis of contentvalidity by judges and evaluation by psychometric assessment in one phase: pilot validation sample to determinethe reliability of the test through the analysis of difficulty items, item-test correlation, estimation of Cronbachand factor analysis. Results: As a result of exploratory factor analysis showed that the construct is comprised of...
10
artículo
Publicado 2014
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The creation of a Virtual Lab, integrated and interactive software, to perform histogram-based binarization of gray scaled images is reported. In an attempt to optimize the binarization the developed virtual lab introduces a Heuristic Binarization Threshold. At processing time, the module extracts the histogram of the input gray scaled image, and then a Heuristic Threshold is calculated by taking the weighted average of the foreground grey levels of the image. Next those pixels in input image whose grey levels are above this threshold are highlighted. Although still not experimentally optimum, this heuristic threshold provides a first approximation towards automatic optimum binarization of grey scaled images. For comparison purposes when an input image is operated on by the binarization module, it is possible to visualize up to three different binarizations on screen simultaneously, each...
11
artículo
The study aimed to explore the psychometric properties of research competency scales published in the scientific literature in seven databases: Scopus, Web Of Science, ERIC, Embase, EBSCO, PubMed and SciELO between 2014 and June 2023. Thirteen papers were systematized, where 11 scales were found that measured content validity using indexes such as the S-CVI, Aiken's V and item-test correlations. Similarly, the results of the exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) presented adequate fit indices such as CFI, GFI, TLI, SRMR and RMSEA, which validated the factor structure. Reliability was mostly evaluated through Cronbach's Alpha coefficient, yielding high and consistent values. In addition, coefficients such as McDonald's Omega, ordinal Omega, Guttman and Spearman Brown have been used, all reflecting a value above .70 and internal consistency in the measure...
12
artículo
El apoyo social favorece la salud integral en la vejez, su adecuada medición permite la identificación de adultos mayores con riesgo de depresión o deterioro cognitivo. La presente investigación tiene como objetivo describir las propiedades psicométricas de las escalas que miden apoyo social en adultos mayores. Mediante los lineamientos de la declaración PRISMA se realizó una revisión sistemática de la producción científica de escalas de apoyo social en la vejez, la búsqueda se llevó a cabo en las bases de datos: PudMed, Web Of Science, Scopus, PubPsych, Dialnet, Scielo y Lilacs. Se seleccionaron y analizaron 10 artículos publicados entre 1987 y 2023, siete validaciones de escalas existentes y tres investigaciones sobre el diseño de nuevos instrumentos. Se identificaron valores de confiabilidad con un rango de .84 a .96 y valores de validez con puntuaciones que se sitúan ...
13
artículo
Considering that there are no instruments to measure resilience specifically designed for peruvian teachers of elementary and secondary public schools, this study aimed to build an ad hoc instrument based on the theoretical foundations expressed by Henderson and Milstein (2003). We did this based on data from 710 public school teachers, both male and female of Callao region (Peru). The results show that 71 items concentrated around four factors: 1) significant participation, 2) prosocial behavior, 3) self-esteem and learning, and 4) perception of support. The cronbach’s alpha coefficient is of .957, which shows that the resilience scale is highly reliable. The scale has been validated by 10 expert judges.
14
artículo
Considering that there are no instruments to measure resilience specifically designed for peruvian teachers of elementary and secondary public schools, this study aimed to build an ad hoc instrument based on the theoretical foundations expressed by Henderson and Milstein (2003). We did this based on data from 710 public school teachers, both male and female of Callao region (Peru). The results show that 71 items concentrated around four factors: 1) significant participation, 2) prosocial behavior, 3) self-esteem and learning, and 4) perception of support. The cronbach’s alpha coefficient is of .957, which shows that the resilience scale is highly reliable. The scale has been validated by 10 expert judges.
15
artículo
The objective of the research was to determine the validity and reliability of a new Attitude Scale towards Statistics, constructed by the authors of the present investigation based on the Auzmendi Scale, which postulates the presence of an Ethical Dimension, applied to Engineering students and Social Sciences of the National University "Pedro Ruiz Gallo" of Lambayeque, academic semester 2016 II. The research was quantitative - social technology and the design was that of a prospective Cohort; study population was constituted by 10 175 students of the mentioned Professional Schools who took at least 1 course of Statistics or are taking it; the sample was of 584 students divided proportionally and chosen with systematic sampling. The authors substantially modified the wording of several items of the Auzmendi Scale, canceled others and in some items the modification was in a way to clearly...
16
artículo
The objective of the research was to determine the validity and reliability of a new Attitude Scale towards Statistics, constructed by the authors of the present investigation based on the Auzmendi Scale, which postulates the presence of an Ethical Dimension, applied to Engineering students and Social Sciences of the National University "Pedro Ruiz Gallo" of Lambayeque, academic semester 2016 II. The research was quantitative - social technology and the design was that of a prospective Cohort; study population was constituted by 10 175 students of the mentioned Professional Schools who took at least 1 course of Statistics or are taking it; the sample was of 584 students divided proportionally and chosen with systematic sampling. The authors substantially modified the wording of several items of the Auzmendi Scale, canceled others and in some items the modification was in a way to clearly...
17
artículo
The objective of this study was the construction and evaluation of the psychometric properties of an instrument that assesses the ability to forgive in youth and adults between 20 and 35 year old. For this purpose, in the first stage of the study was realized the conceptual delimitation of the construct and was developed the preliminary instrument (42 items) based on the review of the literature concerning forgiveness. In the second stage, was considered a Pilot experiment of 150 youth and adults, where the exploratory factor analysis was performed in order to undergo a rigorous analysis of theoretical and dimensional nature of the construct. Also, the Cronbach’s alpha coefficient for both the dimensions and the global scale was obtained. It is concluded that the instrument demonstrates good internal consistency and construct validity
18
artículo
The objective of this study was the construction and evaluation of the psychometric properties of an instrument that assesses the ability to forgive in youth and adults between 20 and 35 year old. For this purpose, in the first stage of the study was realized the conceptual delimitation of the construct and was developed the preliminary instrument (42 items) based on the review of the literature concerning forgiveness. In the second stage, was considered a Pilot experiment of 150 youth and adults, where the exploratory factor analysis was performed in order to undergo a rigorous analysis of theoretical and dimensional nature of the construct. Also, the Cronbach’s alpha coefficient for both the dimensions and the global scale was obtained. It is concluded that the instrument demonstrates good internal consistency and construct validity
19
artículo
Punitivism can be defined as the collective preference for punitive measures and increased control over criminals. Understanding punitivism from a psychological perspective involves examining how individuals make decisions based on their beliefs, experiences, and emotions. The punitivism scale developed by Roberts et al. (2011) comprises seven items in a five-point Likert format, designed to assess individuals’ support for harsher punishments for criminal behavior. However, this construct has received limited attention in psychology, and no validated scale has yet been applied in the Argentine context. This study aims to adapt and validate the Roberts et al. punitivism scale for use in Argentina. A pilot study was conducted with a sample of 401 individuals, and an exploratory factor analysis was carried out. A subsequent final study involved a different sample of 458 participants, in w...
20
artículo
Punitivism can be defined as the collective preference for punitive measures and increased control over criminals. Understanding punitivism from a psychological perspective involves examining how individuals make decisions based on their beliefs, experiences, and emotions. The punitivism scale developed by Roberts et al. (2011) comprises seven items in a five-point Likert format, designed to assess individuals’ support for harsher punishments for criminal behavior. However, this construct has received limited attention in psychology, and no validated scale has yet been applied in the Argentine context. This study aims to adapt and validate the Roberts et al. punitivism scale for use in Argentina. A pilot study was conducted with a sample of 401 individuals, and an exploratory factor analysis was carried out. A subsequent final study involved a different sample of 458 participants, in w...
