Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

One of the fastest growing fields in recent years has been artificial intelligence, which is divided into subfields such as machine learning, which provides techniques and algorithms so that systems can learn and improve automatically. The objective of the project was to develop a medical application whose function is to optimize and facilitate decision-making regarding the care provided to patients with head trauma, through a predictive model that indicates the probability of death of these patients. The extreme programming (XP) methodology was applied, using machine learning techniques based on the CRASH-2 data set, which has 20,207 records of randomized traumatic brain injury patients. Artificial neural networks were used to build the predictive survival model. The neural network with the 6-(8-14-2)-1 architecture achieved an accuracy of 76%, sensitivity of 72.9%, and specificity of 94.1% on the test data set; demonstrating a promising discrimination capacity with good adaptation to internal validation.

Soil is a natural component of great importance in the sustainability of ecosystems, its degradation is due, in most cases, to poor management under hillside conditions, which reduces its productivity and its ability to sustain human life. The purpose of the study is the analysis of risk factors in post-fire soil water degradation under humid tropical conditions in Nicaragua. The research was carried out in the Sconfran region of the municipality of Bluefields, Autonomous Region of the South Caribbean Coast (RACCS). The conditions that interfere with the dynamics of soil degradation in conditions of absence (Pre) and in subsequent (Post) forest fire (Fire) were characterized and analyzed. The erosion monitoring plot (20 m2) had three intensities of vegetation cover (0%, 50% and 100%). Sediment production and runoff volume are strongly correlated with precipitation. It is estimated that the concentrations of combustible material range between 1,000 -10,300 Kg / Ha. Organic matter concentrations (MO%) in all treatments showed drastic decreases. Soil loss (54.6 Kg/m2) and sediment carryover (37.9 Kg ha-1) were higher in post-fire soils. The results obtained are important for establishing agricultural strategies to reduce degradation in rural areas of the Caribbean Coast of Nicaragua.

A region that bases its economy on agriculture must pay special attention to soil research, in order to make agriculture more technical. In this sense, a descriptive quantitative study was carried out to determine the current situation of the soils of the municipality of El Rama and map their fertility. A physical chemical characterization was carried out and the level of fertility was determined 37 farms were visited in the same number of communities, where soil samples were taken. The results show that the soils are grouped into the Clay textural class, the bulk density values ​​indicate that they are not compacted soils, and also have a very strongly acid reaction. Given the concentrations of the elements studied, and according to the methodology indicated by the "Agustín Codazzi" Geographic Institute, it was determined that the soils have a Low level of fertility (3 to 5). Under the current conditions of low fertility, the level of acidity, the levels of Organic Matter, Cation Exchange Capacity, it is concluded that agricultural production could be unsustainable in the short term. What it indicates, it is necessary to work with agronomic practices to avoid soil deterioration and achieve sustainable production.

Rama Maindland is a community located 12.85 kilometers southwest of the city of Bluefields, where buildings have been constructed using compressed soil-cement adobe, an uncommon material in the region. The main objective of this research was to evaluate the structural vulnerability of these buildings, which according to our hypothesis have little resistance to the onslaught of hydrometeorological phenomena that directly hit the area. The site was evaluated, physically characterized by means of cards, architectural surveys of the buildings were carried out and block units were subjected to laboratory tests. The results of the histogram evaluation of the site where the buildings are located, was 2.25 vulnerability to certain hazards, with environmental limitations that could harm the health of the inhabitants. In the physical lifting, cracks were found in the buildings, but they are not so serious. As for the laboratory tests applied to the adobe blocks, they obtained an average resistance value of 54.67 kg/cm2 (779.50 PSI) in the compressive strength and 13.22% in the absorption test, both results do not meet the requirements of Nicaraguan Mandatory Technical Standard 12 008-16.

Even when gender equality, social inclusion and respect for human integrity are promoted in the current context, the reality of the Nicaraguan ulwa woman, for the most part, is limited to the patriarchal regime, social marginalization, unemployment, domestic and intra-familiar violence and sexual abuse. There is a need to create programs or formulate projects that empower these women and promote their participation in decision-making. Added to the role of the institutions, are important to vindicate and fully develop ulwa women. This essay, from the methodological point of view, is supported by documentary sources and a semi-structured interview.

The document shows relevant scientific information for the Nicaraguan state and people on biological aspects, distribution, impact on the fishery and the environment of devilfish (Hypostomus sp), which is considered invasive because it develops outside its natural distribution, presents unusual abundance and produces alterations in the richness and diversity of the lake ecosystem. It represents a negative environmental, economic and social impact, due to its ability to modify the morphology of rivers, altering physicochemical parameters of the water, forcing native species to migrate to areas with better environmental conditions, reducing the fishery of the target species. and damages fishing gear, affecting the living conditions of fishermen. The objective is to inform the population about the presence and implications in the rivers of the city and Laguna de Bluefields, so that they can inform about their presence in the bodies of water and in conjunction with public, private or non-governmental organizations, take steps to reduce them. In Caño El Muerto in the city of Bluefields, two specimens were captured and later transferred to the BICU [Bluefields Indian & Caribbean University] Aquatic Research Center (CIAB), where biometric measurements were taken. On average, they were 30 cm in total length and their gonads were immature, probably not yet having reached their first sexual maturity. In conclusion, it is necessary to carry out studies of its population in order to establish measures that reduce its population and avoid effects on the fishery and environment.

The notion of relationship with knowledge is valid in the field of research in education and as a dense notion it places us in the question of the subject and knowledge. In the way of Beillerot, this notion involves a unique creative process, which is why it is relevant for university artistic teaching in visual art and its deepening updates the field of studies of productive processes. However, the notion originates from a phrase in Lacanian work from the 1960s. In the light of this work, we propose to shed light on the scope of the notion to apply in the investigation of the productive processes of advanced university students of visual art. In this way we integrate the unconscious formations to the field of university artistic teaching in visual art.  

At present we are in a situation of global health crisis (COVID-19) that directly affects multiple socio-economic areas including the labor sector, being forced to take measures and resort to telework resulting in a variety of positive and negative characteristics in the lives of people. Therefore, the present research aims to show the relationship between satisfaction and labor demands in a group of people who perform telework in call centers in Costa Rica, based on the hypothesis that the more hours of teleworking performed, the greater the labor demands and lower job satisfaction of the person. For this, two scales were applied, one to measure labor demands, and the other work satisfaction, to a sample of 100 people. The results show that the people who work more hours of teleworking per day have a higher perception of labor demands and lower job satisfaction; on the contrary, those who work fewer hours per day perceive lower labor demands and higher job satisfaction, thus it is possible to support the hypothesis.