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

Introduction: The thresher is an agricultural machine that cleans and separates the grain from the straw or any impurity, the analysis of the operation of the thresher prototype presents several deficiencies such as grain waste, inadequate cleaning, insufficient production, high vibration that displaces the machine during its operation, among others. Objective: Optimize the operation of the threshing machine prototype by analyzing the loads it supports and the behavior of its elements, thus allowing the development of a redesign and implementation of systems that increase its efficiency and productivity. Methodology: The methodology applied was experimental type where a redesign of the cleaning system, frame, shelling cylinder, and others, was developed to later conduct performance tests and an analysis of vibrations and productivity of the equipment that allow demonstrating the optimization conducted. Results: A beater cylinder was implemented on the axis of the shelling cylinder, in addition, the cleaning shoe was redesigned, increasing the surface to 139 cm2/m and the size of the screen holes was reduced to 2.25mm, the vibration analysis showed a reduction 38% maximum after optimization, grain loss was reduced by 22% and impurities in the final product by 20%. Conclusions: The general operation of the equipment was optimized, reducing grain processing times and increasing its production by 106.02% with a percentage of impurities less than 4%.

Introduction: Information literacy is an imperative need within institutions and labor and educational activities, which requires specific and well-structured training, so that it can be an effective tool within professional development. Objectives: To determine the level of informational literacy of the staff and directors who work in the Public Library of Calceta. Methodology: The methodology used for the development of this study the methodology used was descriptive with an operating model where the action is intended to obtain a response. In the same way, it is based on field research, of the interview and survey type, since it provides precise and specific information on the problem that is being studied, once the data was obtained and analyzed, it was possible to determine that a large part of the library staff is not able to identify the information needs of users, in the same way several of them do not know or manage the sources of information that currently exist. Results: As a result, it was possible to achieve that the library staff needs training and education in information literacy. Conclusions: This research highlights the urgent need for library staff to have constant training on topics of interest, and that will be reflected in the level of user satisfaction, and in the construction of an information literate society.

Beginning with this Scientific Article, the burden of proof in the untimely dismissal will be analyzed in a legal manner, showing whether it is feasible that this can be reversed and not depend on whoever asserts a fact must prove it. Through the critical legal analysis, is how the development of the problem on this topic will be carried out, with the use of the dialectical method, the suitability of the evidentiary burden in the untimely dismissal will be verified, corresponding directly to the person who asserts a fact; maintaining a legal approach, based on rights, principles, jurisprudence and other bibliography suitable for the argumentation of the topic to be discussed.  The purpose of this scientific article is to provide a legal argumentation, based on the study of current legal regulations on the burden of proof in untimely dismissal, with the use of the critical method, it will be possible to corroborate whether it could be considered as a fact that violates the rights of the weakest party in the labor relationship, such as the worker, who lacks the mechanisms to gather sufficient evidence.

Introduction: energy at the present time can be considered as an essential element in people's lives, as well as in the development and progress of countries, the energy sector is strategic because it allows the operation and operability of the different sectors. it can be said that energy is indispensable in modern society. Forecasting or inferring what is going to happen in the future allows timely decisions to be made and to anticipate events. This is how it becomes important to know the production of the energy sector in the future. In addition, these predictions can be used as starting elements to generate documents such as medium and long-term energy planning. Objectives: conduct an exploratory study of the best techniques that could assist in the prediction of primary energy production in Ecuador, to evaluate the short-term adjustment efficiency through univariate time series. Methodology: in the research work it was possible to conduct an exploratory study of four predictive models in the energy sector of Ecuador, using two techniques, ARIMA and Holt exponential smoothing, which allowed a reliable approximation of prediction in the production of primary energy in the short term, in three years until 2022, using univariate time series. As for the methodological part used to meet the objectives, it began with obtaining the historical series provided by the Ministry of Renewable Resources and Energy in the technical document called National Energy Balance 2019, the data was processed and outliers were determined using the criterion de Chauvenet, once the database for the analysis was determined, the Box-Jenkins methodology was applied to obtain ARIMA and Holt models. Results: the model that best fits the prediction benefits of those analyzed is ARIMA Model-a (1,1,0) whose expression is: Y_t=3365.526+0.074 Y_(t-1)+ε_t, in addition, it was estimated that Primary energy production for the year 2022 in Ecuador could be 236940.541 kilobarrels of oil equivalent (KBEP), with a fluctuation above and below in the interval of [275511.589 .198369.493](KBEP). Conclusions: based on the data obtained, it can be stated that the predictive models found are strictly autoregressive, that is, they are explicit iterative methods, since they determine the value of Y_t depending on the previous result Y_(t-1), in which they do not intervene the residuals of the errors, this indicates that the component of moving averages does not intervene. The prediction with the first three models a, b, c resulted in an increasing behavior and with model h it remained constant.

Introduction. The lack of transverse development in the maxilla can lead to aesthetic and functional problems in patients treated at an early age, such as in the late and early permanent dentition. Goal. To analyze the effectiveness in transverse maxillary hypoplasia with conventional appliance versus hybrid hyrax. Methodology. In the present study, a bibliographic review was conducted based on the collection of 100 scientific articles in four digital databases: PubMed, Scielo, Medline, Dialnet. 59 were discarded and 41 remained whose information was used. The search strategy covered the period from 2007 to 2022. Results. In most studies, it indicates that the rapid expansion of the maxilla (RME) anchored to the bone with mini-implants is associated with a safer opening of the mid-palatal suture, the orthopedic effects of a conventional expansion are lower due to the forces applied. at the dento-alveolar level, but not at the skeletal level and therefore an expansion with hybrid devices would be indicated, they should be placed in the paramedian areas of the median palatal suture. The hybrid hyrax minimizes secondary dental effects caused by conventional hyrax such as: excessive buccal inclination of the teeth where the expander is anchored, possible gingival recession, possible periodontal compromise, marginal bone loss and root damage. Knowledge and skill are necessary to decide on the design and type of expander that would be used when the patient is a child, adolescent, or young adult. Depending on the amount of force required to achieve the necessary orthopedic expansion. Conclusion. In rapid maxillary expansion (RME), better results were observed with the Hyrax Hybrid, with increased nasal cavity, maxillary width and less movement of the upper teeth in patients applied after pubertal growth, while with the Conventional Hyrax in preburial stage, taking into account the age and dentition in which each patient is, with the help of different diagnostic methods, favorable options in orthodontic therapy using at the right time.

The article is dedicated to the problem of improving the assimilation of theoretical material by university students in the framework of the educational process in an Ecuadorian university. Starting from the generalization of the experience of practical work, the authors examine the difficulties that arise in the independent study of educational information. To optimize the educational process, the main aspects of the structure of the presentation of theoretical material are determined. Research has been conducted, during which the advantages of using adaptive patterns with the use of an intermediate language have been shown. This work shows the impact of the use of didactic materials in the teaching of the English language in higher education students of the Escuela Superior Polytechnical de Chimborazo. For meaningful learning, some weaknesses have been observed as a framework not only for the teaching and learning processes but also for the selection of materials and their design. Finally, some fundamental characteristics that materials for teaching English in the field of science must have been described with a series of practical examples, which must be developed for learning to be more successful. The article reviews the main functions of the Didactic Materials for the Teaching of English and its importance in the teaching and learning processes as mediators between teachers and students, that is, a link is created between them. The teaching material replaces reality and tries to represent it in the best viable way, facilitating its objectification.

Assertive communication is a characteristic that is found in human beings and is classified as a social skill that is used to apply it in the business environment so that the organization is competitive, since the message that originates will be clear to the users. receivers, in the case of community tourism, this assertive communication plays a preponderant role even more so because it has an impact on the quality of life of its inhabitants, because it is an economic activity for the community, in this study it is intended to contextualize the factors of communication assertive that can be used as a strategy to promote community tourism, the findings of this research show that there are two most relevant factors on the subject, the first is the attitude of community leaders in communication towards people so that they integrate and achieve community objectives in terms of tourism and the second factor is organizational training tive, which must be constant, because it is an adequate form of assertive communication so that the plans or programs can be fully carried out in the community.

Introduction. This research presents the correlation of the Communicative Method variables and the teaching-learning process of the ability to speak English. This proposal was applied to the students of the ESPOCH Maintenance Career. Objective. The level of influence of the techniques based on the Communicative Method in the improvement of oral skills was determined. Methodology. Two methods, techniques and instruments were used for the intervention. Through its application it was possible to obtain data with a high degree of accuracy and reliability. A descriptive and inferential statistical analysis showed a significant improvement in the ability to speak in English in the comparison between the pre and post test. For this test, a Cambridge level B1 test and rubric was used, to determine the qualitative improvement an observation guide was used. Result. This test instrument showed an improvement of 2.3 points in oral skills. When applying the T-student test with the data obtained, the change was ratified after the application of the project. The observation guide showed the bilateral correlation between the variables. All the results demonstrated the positive impact of the Communicative Method on oral skills in English. Conclusion. It was concluded that the project contributes significantly to the teaching of the English language and specifically improves oral skills. It is recommended to continue researching on this method to generate new knowledge for the teaching of foreign languages.

Violence against women has become a social and health problem, therefore, different actions are carried out to try to stop this phenomenon, however, it has not been possible instead Ecuador reports alarming figures of violence, for this reason , this research is carried out whose objective is to prevent violence against women in the City Alegria neighborhood of the city of Loja, through the proposal of a Social Work Program that makes families in this sector aware of the importance of recognizing their rights in order to generate a coexistence free of violence. The quantitative study is based on the application of surveys to 344 women from the Ciudad Alegria neighborhood of the city of Loja, the same ones that statistically analyzed show that psychological violence prevails in 55.52%, although there is no record of sexual violence in the sample obtained, but this result does not agree with the type of assessment they give to their family environment, therefore, the treatment that women receive within their home is considered as a routine or part of their daily lives. According to the results, women are aware of being victims of violence (99.42%), but they put up with it and allow the abuse of power by men and inequality between men and women to continue to grow and spread, actions promoted from the core family, due to negative reactions from relatives and embarrassment to society. Additionally, the main characteristics of violence against women are the reiteration of epithets that undermine dignity, contempt, and devaluation by generating notable consequences such as stress, anxiety, and mistrust of other people.

Root resorption has been a condition associated with a physiological or pathological process resulting in the loss of dentin, cementum, or bone, produced as an undesired but unavoidable effect of orthodontic treatment. The aim of this review is to analyze the literature on root resorption produced in space closure during orthodontic treatment with tooth extractions. An electronic search was performed in the following databases: PubMed, Science Direct, BVS Regional and Cochrane.  The eligibility criteria included studies related to the subject of the review, in English and Spanish, with restriction to publications in the last 5 years, open access, full text, descriptive studies, case-control, cohort, clinical trials, systematic reviews and meta-analysis. Twenty-seven were chosen for analysis. Most authors agree that there are factors that should be considered in the risk of producing root resorption in different degrees, these are orthodontic treatments with dental extractions, since in the space closure phase there is great movement of the teeth, because of the distance they must travel, and the duration of the therapy. Root resorption affects the maxillary the maxillary incisors.