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1
artículo
The MST has a venerable history in combinatorial optimization. It was initially developed in 1926 by Boruvka who says he had to learn for the electrification of southern Moraria where he provided a solution to find the most economical distribution through a network of a power line.
2
artículo
The MST has a venerable history in combinatorial optimization. It was initially developed in 1926 by Boruvka who says he had to learn for the electrification of southern Moraria where he provided a solution to find the most economical distribution through a network of a power line.
3
artículo
Publicado 2019
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Purpose – Personal bankruptcy is on the rise in Malaysia. The Insolvency Department of Malaysia reported that personal bankruptcy has increased since 2007 and the total accumulated personal bankruptcy cases stood at 131282 in 2014. This is indeed an alarming Issue because the increasing number of personal bankruptcy cases will have a negative impact on the Malaysian economy as well as on the society. From the aspect of individual’s personal economy bankruptcy minimizes their chances of securing a job. Apart from that their account will be frozen lost control on their assets and properties andnot allowed to start any business nor be a part of any company’s management. Bankrupts also will be denied from any loan application restricted from travelling overseas and cannot act as a guarantor. This paper aims to investigate this problem by developing the personal bankruptcy prediction mo...
4
artículo
Publicado 2022
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Anemia is one of the most common problems in children who are not adequately fed. Iron deficiency harms minors as it prevents them from carrying out their daily activities due to extreme tiredness and fatigue. Due to this situation, the Peruvian State has tried to reduce the level of prevalence of anemia at the national level with medical campaigns in different regions; despite this, localities such as Caylloma in Arequipa still maintain a high percentage of anemic infants, for which an implementation through Decision Trees with the python language to be able to determine if a child has anemia based on the data provided.
5
artículo
Publicado 2023
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Telemarketing is an interactive direct marketing technique in which a telemarketing agent solicits potential customers over the phone to make a sale of merchandise or a service. One of the great problems of telemarketing is to specify the list of clients that presents a greater probability of buying the product that is offered. In this article, we propose a personalized decision support system that can automatically predict the decision of the target audience after making a telemarketing call, in order to increase the effectiveness of direct advertising campaigns and consequently reduce the cost and cost. campaign time. The artificial intelligence method used in this work is the decision tree evaluated with the metrics of precision, accuracy and completeness. After applying the artificial intelligence method we obtain an accuracy, precision and completeness greater than 80%. The conclusi...
6
artículo
Obesity is a public health problem that affects the world population, that is why the present work is oriented to present a computer solution for the estimation and prediction of obesity levels, making it possible for a person to know their current physical condition for this we used a dataset of people with obesity from different countries like Peru, Mexico and Colombia based on their eating habits and their physical condition, creating a decision tree with all these data.
7
artículo
Publicado 2021
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The cadmium absorption by cacao plant and increased in beans accumulation, represents a problem for the exports of cacao beans and chocolate industry. In this study, native strains of Trichoderma spp. were evaluated for their capacity of tolerate and removal to Cd, collected from rhizospheric soil of cacao trees. In order to evaluate such capacities under in vitro conditions, 10 native strains of Trichoderma spp. were inoculated in potato dextrose agar (PDA) culture medium contaminated with three concentrations of Cd (25 ppm, 100 ppm and 250 ppm) and in potato dextrose (PD) culture medium contaminated with 5 ppm Cd. With data of growth rhythm (RC) of the fungus colony in Cd presence and percentage of Cd removal (RCd), the analysis of variance was performed, and the means were compared with Scott-knott test (p = 0.05). The results showed that, Trichoderma spp. were sensitive to Cd presenc...
8
artículo
Publicado 2021
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The cadmium absorption by cacao plant and increased in beans accumulation, represents a problem for the exports of cacao beans and chocolate industry. In this study, native strains of Trichoderma spp. were evaluated for their capacity of tolerate and removal to Cd, collected from rhizospheric soil of cacao trees. In order to evaluate such capacities under in vitro conditions, 10 native strains of Trichoderma spp. were inoculated in potato dextrose agar (PDA) culture medium contaminated with three concentrations of Cd (25 ppm, 100 ppm and 250 ppm) and in potato dextrose (PD) culture medium contaminated with 5 ppm Cd. With data of growth rhythm (RC) of the fungus colony in Cd presence and percentage of Cd removal (RCd), the analysis of variance was performed, and the means were compared with Scott-knott test (p = 0.05). The results showed that, Trichoderma spp. were sensitive to Cd presenc...
9
artículo
Publicado 2025
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This research was conducted at the Ecuadorian Ceramic Factory, located in the city of Riobamba, in the province of Chimborazo, Ecuador. Its purpose was to understand employee behavior in the performance of their duties. To this end, the importance of human capital in organizations was defined, and the various stages that must be carried out to ensure competent personnel are recruited prior to hiring were detailed. The objective is to obtain relevant information that contributes to achieving the organization's objectives. The goal is to contribute to maintaining optimal interpersonal relationships, allowing for the ongoing stability of the company and its employees. Consequently, it was necessary to examine various concepts, including the importance of human capital in organizations and human relations, referring to interpersonal interactions, classified as formal or informal, close or di...
10
artículo
State of conservation de Myrcianthes ferreyrae an endemic tree of the coastal hills of southern Peru
Publicado 2019
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Myrcianthes ferreyrae (McVaugh) McVaugh, "arrayan" is an endemic and threatened tree of the “lomas” formations of south Peru. We evaluated their conservation status between March 2011 to August 2012; for which, all individuals were counted in its distributional range known (Atiquipa, Taymara and Chala Viejo hills in the Province of Caraveli, Arequipa). We established 9 plots of 0.25 hectares, three in each locality; in each plot we obtained data of all trees greater than 10 cm basal diameter, plus mortality parameters, its natural regeneration and presence of disturbances. Myrcianthes ferreyrae has a population of 586 individuals, its diameter distribution shows a bell form, the most common category mortality was logging; the natural regeneration was 33.12%, all belonging to the Atiquipa hills. We conclude that M. ferreyrae is strongly threatened, formed by adult individuals and with...
11
artículo
State of conservation de Myrcianthes ferreyrae an endemic tree of the coastal hills of southern Peru
Publicado 2019
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Myrcianthes ferreyrae (McVaugh) McVaugh, "arrayan" is an endemic and threatened tree of the “lomas” formations of south Peru. We evaluated their conservation status between March 2011 to August 2012; for which, all individuals were counted in its distributional range known (Atiquipa, Taymara and Chala Viejo hills in the Province of Caraveli, Arequipa). We established 9 plots of 0.25 hectares, three in each locality; in each plot we obtained data of all trees greater than 10 cm basal diameter, plus mortality parameters, its natural regeneration and presence of disturbances. Myrcianthes ferreyrae has a population of 586 individuals, its diameter distribution shows a bell form, the most common category mortality was logging; the natural regeneration was 33.12%, all belonging to the Atiquipa hills. We conclude that M. ferreyrae is strongly threatened, formed by adult individuals and with...
12
tesis de grado
Publicado 2023
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Universidad Nacional Agraria La Molina. Facultad de Ciencias Forestales. Departamento Académico de Manejo Forestal
13
artículo
Publicado 2024
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Tree diseases contribute to significant economic and food losses in the agricultural sector. Early detection of phytosanitary problems in trees with non-destructive methods is essential to guarantee sustainable orange production. This study presents the findings of a designed methodology conducted to identify diseased orange trees in an orchard situated in the citrus belt of Mexico, specifically in the Rioverde region of San Luis Potosi. To accomplish this, we captured images using a multispectral camera with very high spatial resolution, which was mounted on an unmanned aerial vehicle. These images were used to construct a georeferenced orthomosaic of the orchard. Six thematic classes were established to distinguish various health levels among the trees. We employed several supervised classification algorithms at the pixel level, including Random Forest (RF), K-Nearest Neighbor (KNN), S...
14
artículo
Publicado 2022
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Cocoa (Theobroma cacao L.) is one of the main crops in Latin American and African countries, its almonds being marketed to produce chocolate. However, different biotic factors can negatively affect the crop production, especially on small farms where management by farmers is scarce or nonexistent. Lethal wilt (Ceratocystis cacaofunesta Engelbrecht & Harrington) together with beetle borers (Coleoptera: Curculionidae: Scolytinae), continue to be the main problems affecting cocoa. It has been observed that both organisms interact intrinsically inside the trunks of cacao trees. Despite the importance of this interaction, in general, the countless research and review articles carried out to date have focused mainly on studying each biotic factor separately or have been addressed in a general way. Thus, in this review we mainly focus on the interaction between the Lethal wilt and the borer...
15
tesis de grado
Publicado 2015
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La presente investigación fue elaborada en una empresa del sector aéreo, en donde los analistas de compras a lo largo del año 2014 y los primeros meses del presente año percibieron que existe demora en satisfacer los pedidos de las órdenes de servicio. Esta deficiencia también ha sido reflejada en los reportes de servicios donde se puede apreciar los largos periodos de tiempo en el proceso de adquisición. Por ello se buscan diferentes teorías que puedan ayudar a solucionar este problema. La teoría más adecuada es la teoría de restricciones del físico israelí Eliyahu M., en donde enuncia un proceso que tiene como resultado buscar eliminar las restricciones. En este contexto la tesis tiene como objetivo aplicar las teorías y metodologías, en cual se abordó la problemática. Asimismo se formuló la solución óptima para mejorar el tiempo del proceso de adquisición. This re...
16
artículo
Publicado 2024
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Fungal contamination is an important problem in cannabis and medical cannabis production, as fungi can produce toxic compounds or reduce the quality and safety of the product. The aim of this study was to perform a bibliometric evaluation related to fungal contamination in cannabis, analyzing current trends in this field and providing future perspectives for research. For this purpose, an exhaustive search was carried out in the scientific literature in electronic databases such as Scopus and Web of Science (WOS), covering the period from 2000 to 2023. The results obtained were processed through bibliometrics and network analysis, using tools such as RStudio and Bibliometrix software. The results revealed that the main themes associated with fungal contamination in cannabis are focused on: diseases related to fungal contamination of the plant, use of fungi as an alternative biological co...
17
artículo
Publicado 2022
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The present work was developed with the objective of evaluating the sustainability indicators in two dairy farms (A and B) of the Mayabeque province, Cuba. An agroecological diagnosis was carried out with student participation through a system approach to identify and rank problems during the dry season. In dairy A, a sustainable animal production project was carried out, while in dairy B the traditional production system was maintained. The sustainability of the agroecological bases was evaluated, by weighting 13 indicators based on the average potential of the dairy farms and the participatory techniques used. These were selected based on international experience and adapted to the conditions of Cuba. The work included the identification and modeling of systems, analysis of processes and of productive, ecological and socioeconomic indicators. Among the tools used are the search for sec...
18
tesis de grado
Publicado 2023
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El presente trabajo de investigación, consiste en la identificación y análisis de las condiciones actuales de una empresa familiar del sector veterinario, con la finalidad de identificar las falencias más relevantes que la aquejan. Haciendo uso de la herramienta del árbol de problemas se logró identificar y analizar el problema principal de la organización, el cual se reduce a la débil estructura organizacional de la empresa en estudio. Una de las causas principales del problema en mención es el funcionamiento de la empresa basado en conocimientos empíricos, ya que quienes están encargados de dirigirla no cuentan con conocimientos académicos en dirección empresarial. Todo esto da como resultado la disminución de las ventas y la pérdida económica por errores en la fabricación, debido al desconocimiento de las funciones de los colaboradores y de los jefes de cada área. La...
19
artículo
Application of Artificial Intelligence techniques for the differentiation of the socioeconomic level
Publicado 2024
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In this project, a differentiation is made between people through different parameters such as age, sex, educational level, among others, to try to calculate how much their salary could rise. This problem is important to solve because then a person could predict her future income through the decisions she would make in the present, such as how much education she should receive and when to start working to gain experience. Our procedure to solve this problem has been two statistical analyses, the first linear regression and a decision tree to be able to make a comparison between them, we have tested them using tools such as Colab (Python) and a dataset. Our population for our work was 32,000 records (rows). The results were that through the decision tree there was a precision of 0.88 and an accuracy of 0.82. And with respect to the logistic regression we obtained a precision of 0.80 when ...
20
tesis de grado
Publicado 2023
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El presente proyecto aborda la problemática de la falta de recursos para la optimización constante de una red 4G en la ciudad de Iquitos. Esto conlleva a una subutilización de los recursos de radiofrecuencia disponibles, resultando en problemas como desbalance de usuarios entre diferentes frecuencias, problemas en la cobertura y la detección tardía de altas interferencias en el enlace ascendente. Todos estos inconvenientes impactan negativamente en la experiencia del usuario al navegar por internet, generando una percepción desfavorable del servicio de telefonía móvil brindado. Para solucionar este problema, este proyecto hace uso de distintos algoritmos basados en técnicas propias del aprendizaje automático. En este caso, se emplean regresiones multi salidas mediante árboles de decisión para la predicción de KPIs a partir de las múltiples entradas de las antenas, y algorit...
