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Tópicos Sugeridos dentro de su búsqueda.
1
artículo
Publicado 2024
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This study investigated consumers' perceptions of adding bee pollen to bread. An attitude questionnaire composed of 48 statements related to "general health," "light products," "natural products," "salty products," "food as a reward," "pleasure," and "food neophobia" was answered by the participants, who indicated their level of agreement with each statement according to a 5-point Likert scale, ranging from (1) "totally disagree" to (5) "totally agree." A check-all-that-apply (CATA) questionnaire was also employed to characterize 12 visual stimuli. The creation of stimuli was carried out using a factorial design, resulting in 12 images of bread. Three clusters of consumers were identified, each associating positive attributes with stimuli containing bee pollen, regardless of the health claim, while negative attributes were associated with stimuli without added pollen. The main positive d...
2
artículo
Publicado 2024
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This study investigated consumers' perceptions of adding bee pollen to bread. An attitude questionnaire composed of 48 statements related to "general health," "light products," "natural products," "salty products," "food as a reward," "pleasure," and "food neophobia" was answered by the participants, who indicated their level of agreement with each statement according to a 5-point Likert scale, ranging from (1) "totally disagree" to (5) "totally agree." A check-all-that-apply (CATA) questionnaire was also employed to characterize 12 visual stimuli. The creation of stimuli was carried out using a factorial design, resulting in 12 images of bread. Three clusters of consumers were identified, each associating positive attributes with stimuli containing bee pollen, regardless of the health claim, while negative attributes were associated with stimuli without added pollen. The main positive d...
3
artículo
Publicado 2024
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This study investigated consumers' perceptions of adding bee pollen to bread. An attitude questionnaire composed of 48 statements related to "general health," "light products," "natural products," "salty products," "food as a reward," "pleasure," and "food neophobia" was answered by the participants, who indicated their level of agreement with each statement according to a 5-point Likert scale, ranging from (1) "totally disagree" to (5) "totally agree." A check-all-that-apply (CATA) questionnaire was also employed to characterize 12 visual stimuli. The creation of stimuli was carried out using a factorial design, resulting in 12 images of bread. Three clusters of consumers were identified, each associating positive attributes with stimuli containing bee pollen, regardless of the health claim, while negative attributes were associated with stimuli without added pollen. The main positive d...
4
objeto de conferencia
Publicado 2018
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The authors would like to thank Consejo Nacional de Ciencia, Tecnolog´ıa e Innovacion Tecnol ´ ogica ´ , Peru (CONCYTEC), Fondo Nacional de Desarrollo Cient´ıfico y Tecnologico ´ , Peru (FONDECYT) for the financial support; and Autoridad Nacional del Agua, Peru (ANA) for providing the satellite images.
5
artículo
Modeling and air quality assessment through Grey Clustering analysis, case study: Lima Metropolitana
Publicado 2020
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Currently, the criteria to air quality assessment are analyzed independently, leaving aside the systemic approach of the environment, where air quality is influenced and controlled by many types of factors, where several parameters interact and mutually restrict each other for that reason a higher evaluation system is proposed by Grey Clustering analysis based on fuzzy logic, which takes into account the high degree of uncertainty present in the environment. The methodological proposal will assess the quality of air in Lima Metropolitana. In this work, we apply Center-point triangular whitenization weight functions (CTWF) method, where it will be demonstrated that the proposed model is exact, comparable and applicable. The monitoring data on each city of Lima Metropolitana were obtained from National Service of Meteorology and Hydrology of Peru – Senamhi. The CTWF method was applied us...
6
artículo
Modeling and air quality assessment through Grey Clustering analysis, case study: Lima Metropolitana
Publicado 2020
Enlace
Enlace
Currently, the criteria to air quality assessment are analyzed independently, leaving aside the systemic approach of the environment, where air quality is influenced and controlled by many types of factors, where several parameters interact and mutually restrict each other for that reason a higher evaluation system is proposed by Grey Clustering analysis based on fuzzy logic, which takes into account the high degree of uncertainty present in the environment. The methodological proposal will assess the quality of air in Lima Metropolitana. In this work, we apply Center-point triangular whitenization weight functions (CTWF) method, where it will be demonstrated that the proposed model is exact, comparable and applicable. The monitoring data on each city of Lima Metropolitana were obtained from National Service of Meteorology and Hydrology of Peru – Senamhi. The CTWF method was applied us...
7
artículo
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
8
artículo
Publicado 2018
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MOFs (Metal-Organic Frameworks), are a new class of hybrid microporous materials defined as extended networks, formed by metal ions joined by covalent bonds coordinated with polyfunctional organic ligands, forming structures in 1D, 2D and 3D. This computational study evaluates the electronic properties and chemical reactivity of a section of the metal-organic network (MOFs) for copper with carboxylate ligands (benzoate) reported in the Cambridge Structural Database (CSD) called hexaquis copper cluster (m2-Benzoate). O, O ') - hexacobre (I), in order to explain the behavior of the active sites present in its structure. The calculation was made with the program Q-Chem 4.0, which is used for accurate predictions of molecular structures, reactivities and vibrational, electronic and NMR spectra, using the graphical interface of Spartan 14 version 1.1.4 and the hybrid density functional B3LYP ...
9
artículo
Publicado 2018
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MOFs (Metal-Organic Frameworks), are a new class of hybrid microporous materials defined as extended networks, formed by metal ions joined by covalent bonds coordinated with polyfunctional organic ligands, forming structures in 1D, 2D and 3D. This computational study evaluates the electronic properties and chemical reactivity of a section of the metal-organic network (MOFs) for copper with carboxylate ligands (benzoate) reported in the Cambridge Structural Database (CSD) called hexaquis copper cluster (m2-Benzoate). O, O ') - hexacobre (I), in order to explain the behavior of the active sites present in its structure. The calculation was made with the program Q-Chem 4.0, which is used for accurate predictions of molecular structures, reactivities and vibrational, electronic and NMR spectra, using the graphical interface of Spartan 14 version 1.1.4 and the hybrid density functional B3LYP ...
10
tesis de grado
Publicado 2021
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Universidad Nacional Agraria La Molina. Facultad de Economía y Planificación. Departamento Académico de Estadística e Informática
11
artículo
Publicado 2018
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Los MOFs (Metal-Organic Frameworks), son una nueva clase de materiales híbridos microporosos definidos como redes extendidas, conformados por iones metálicos unidos mediante enlaces covalentes coordinados con ligandos orgánicos polifuncionales, formando estructuras en 1D, 2D y 3D. Este estudio computacional evalúa las propiedades electrónicas y reactividad química de una sección de la red metal-orgánico (MOFs) para el cobre con ligandos carboxilato (benzoato) reportado en la Cambridge Structural Database (CSD) denominado clúster de cobre hexaquis (m2-Benzoato-O,O')-hexacobre(I), con el fin de explicar el comportamiento de los sitios activos presentes en su estructura. El cálculo se realizó con el programa Q-Chem 4.0, el cual es utilizado para predicciones precisas de estructuras moleculares, reactividades y espectros vibratorios, electrónicos y de RMN, utilizando la interfaz ...
12
tesis de grado
Publicado 2020
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Esta investigación se centra en la aplicación de las principales herramientas de ingeniería en el sector de fabricación de muebles de madera. El estudio utilizó como fuente de información las principales empresas productoras de muebles de madera aglomeradas en el parque industrial de Villa El Salvador, Lima , Perú. El objetivo es investigar e implementar la metodología 6TOC la cual integra la filosofía LEAN para la producción, Six Sigma para la investigación de variabilidad y teoría de restricciones para la sincronización del tiempo de actividades en base al proceso cuello de botella en los macroprocesos de habilitado y corte. Inicia con el reconocimiento de las estaciones de trabajo: funciones, maquinaria y herramientas. Se utilizan herramientas que ayudan en la planificación y el desarrollo de actividades aumentando la productividad partiendo de un nivel inicial hasta alc...
13
artículo
Publicado 2021
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This work studies the interaction between natural dyes obtained from Peruvian Zea mays and Bixa orellana seeds and nanostructured titanium dioxide, in order to evaluate their function as sensitizers into solar cell devices. The effective attachment of dyes to the TiO2 layer is corroborated by the comparison of UV-Visible absorption and FT-IR spectra of the extracted dye solutions and sensitized TiO2 electrodes. The principal compounds from the seed extraction of Zea mays and Bixa orellana are cyanidin-3-glucoside (C3G) and bixin respectively, which were analyzed in an isolated dye/cluster TiO2 system by molecular dynamic simulation. The results showed that chemisorption is carried out through a consecutive deprotonation process, and Ti-O bond formation by the monodentate OH and COOH anchoring groups, for C3G and bixin respectively. Finally, we tested the effect of the dye - TiO2 interact...
14
artículo
Publicado 2019
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We study the diet and trophic structure of 36 bat species from the Pampa Hermosa National Sanctuary. Faeces samples and gels with pollen were analyzed; seeds, pollen and remains of arthropods were found in the feces. Bats were classified in six functional groups. We found in the diet of the sedentary frugivores (FS), frugivorous nomads (FN) and nectarivores (N), 70 morphospecies of seed and pollen; in the diet of the aerial insectivorous (IA) and foliage gleaners (IR), nine morphospecies of arthropods. Principal component analysis shows the separation of bats and their diets; Carollia brevicauda-Piperaceae (Piper spp.), Vampyressa melissa-Moraceae (Ficus spp.), Sturnira lilium-Solanaceae; Anoura peruana and Anoura cultrata were separated by the consumption of Fabaceae and Bombacaceae, respectively, and Myotis spp. for the consumption of arthropods. The niche breadth was less than 0.50, i...
15
artículo
Publicado 2019
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We study the diet and trophic structure of 36 bat species from the Pampa Hermosa National Sanctuary. Faeces samples and gels with pollen were analyzed; seeds, pollen and remains of arthropods were found in the feces. Bats were classified in six functional groups. We found in the diet of the sedentary frugivores (FS), frugivorous nomads (FN) and nectarivores (N), 70 morphospecies of seed and pollen; in the diet of the aerial insectivorous (IA) and foliage gleaners (IR), nine morphospecies of arthropods. Principal component analysis shows the separation of bats and their diets; Carollia brevicauda-Piperaceae (Piper spp.), Vampyressa melissa-Moraceae (Ficus spp.), Sturnira lilium-Solanaceae; Anoura peruana and Anoura cultrata were separated by the consumption of Fabaceae and Bombacaceae, respectively, and Myotis spp. for the consumption of arthropods. The niche breadth was less than 0.50, i...
16
artículo
Publicado 2021
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Enlace
This work studies the interaction between natural dyes obtained from Peruvian Zea mays and Bixa orellana seeds and nanostructured titanium dioxide, in order to evaluate their function as sensitizers into solar cell devices. The effective attachment of dyes to the TiO2 layer is corroborated by the comparison of UV-Visible absorption and FT-IR spectra of the extracted dye solutions and sensitized TiO2 electrodes. The principal compounds from the seed extraction of Zea mays and Bixa orellana are cyanidin-3-glucoside (C3G) and bixin respectively, which were analyzed in an isolated dye/cluster TiO2 system by molecular dynamic simulation. The results showed that chemisorption is carried out through a consecutive deprotonation process, and Ti-O bond formation by the monodentate OH and COOH anchoring groups, for C3G and bixin respectively. Finally, we tested the effect of the dye – TiO2 intera...
17
artículo
L. M. S. gratefully acknowledges the International Max Planck Research School Dynamical processes in atoms, molecules and solids and the Deutscher Akademischer Austauschdienst (DAAD) for the financial support. G. C. S. and C. V. L. are grateful to the National Council of Science and Technology (CONCYTEC) from Peru for the financial support through the Doctoral Program for Peruvian Universities (No. 218-2014-FONDECYT) and the Peruvian Excellence Center Program, respectively. This work has also been partly supported by the German Research Foundation (DFG) within the Cluster of Excellence “Center for Advancing Electronics Dresden”. We acknowledge the Center for Information Services and High Performance Computing (ZIH) at TU Dresden for computational resources. Open Access funding provided by the Max Planck Society.
18
artículo
Publicado 2016
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Los call centerse presentan como estrategia que permite a las organizaciones centralizarse en el negocio y delegarla función organizacional de la relación empresa – cliente.Su funcionamiento se basa en el número de estaciones o módulos con el fin de garantizar una mejor productividad del sistema. Este trabajo busca realizar una propuesta de módulo empleado en los call center de la ciudad de Manizales- Colombia, teniendo en cuenta la Norma Técnica Colombiana NTC 1440 y las normas internacionalesdel Instituto Nacional de Seguridad e Higiene en el TrabajoNTP 242 y NTP 602, con respecto a los factores ergonómicos.La población fue dividida mediante un muestreo probabilístico estratificado proporcional de conglomerados. Como resultado se propone un prototipo flexible modular, que cuenta con las condiciones con las cuales se espera conseguir aumentos en la productividad y reducción ...
19
artículo
Call center are presented as a strategy that allows organizations to centralize business and delegate the organizational function of the relationship company - client. Its operation is based on the number of stations or modules in order to ensure better productivity of the system. This work intends to make a proposal for module used in the call center in the city of Manizales - Colombia, taking into account the standard technique Colombian NTC 1440 and international standards from the National Institute of safety and hygiene at work NTP 242 and NTP 602, with regard to ergonomic factors. The population was divided by a proportional stratified probability of cluster sampling. As a result it is proposed a flexible modular prototype, which has the conditions with which it is expected to achieve increases in productivity and reduction of injuries or illnesses that may occur when working on th...
20
tesis de grado
Publicado 2012
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For the development of the research was used as data collection instrument in EXCEL template called SIRA (Information System Agency Network), established by the Financial Crediscotia, to process all your information._x000D_ Technique was used surveys and market specific variables were evaluated our client and also used multivariate statistical techniques such as cluster analysis and discriminant analysis for the collection, processing and analysis._x000D_ Our population The target population consisted of the information was taken from the daily logs of customer database (SIRA) obtained in the assessments in the business area of the Financial Consumer Crediscotia in Trujillo Province, during the period September 2011 - August 2012. This database is N = 1793 cases which pertain to loans and cards activated._x000D_ To assess the credit market segmentation cluster analysis and discriminant a...
