International research journal of engineering, IT & scientific research https://sloap.org/journals/index.php/irjeis <p style="text-align: justify;"><strong>IRJEIS&nbsp;</strong>is published in English and it is open to authors around the world regardless of the nationality. It is currently published three times a year, i.e. in&nbsp;<em>January, March, May, July, September,&nbsp;</em>and<em>&nbsp;November.</em></p> SLOAP en-US International research journal of engineering, IT & scientific research 2454-2261 <p>All articles in the SLOAP Journals are published under the terms of the &nbsp;Creative Commons Attribution-ShareAlike 4.0 International License&nbsp;(CC BY-SA) which allows authors and users to copy, distribute, transmit and adapt the article.&nbsp;The &nbsp;Creative Commons Attribution-ShareAlike 4.0 International License&nbsp;of an open-access article, as long as the author is properly attributed.&nbsp;Copyright on any research article published by SLOAP is retained by the author(s).&nbsp;Authors grant to the SLOAP right to publish the article, to be cited as its original publisher in case of reuse, and to distribute it in all forms and media.&nbsp;Copyright and source must be acknowledged and a link must be made to the article's DOI.&nbsp;</p> Brain and learning on adolescence stage https://sloap.org/journals/index.php/irjeis/article/view/720 <p style="text-align: justify;">Research shows adolescent learning by analyzing brain development at the age of 10 to 19 years. A literature review method has used in the investigation from 1997 to 2019 with the aim of demonstrating the incidence of the brain in the teaching system. An analysis of the conceptualization of adolescence, brain, learning, behavior has shown; where several authors who have studied the subject have analyzed. In addition, the behavior of people influences the teaching process, for this reason, shows the psychosocial characteristics of the adolescent that give rise to the design and predisposition of the use of innovative methodologies to teach classes in educational institutions. The study of the brain and learning, adolescence, generalities and psychosocial characteristics of the adolescent will help in the intervention and prevention of future social problems that many teenagers are currently affected. Understanding a teenager is complex; but if you can know what you like, what you want, this will serve to be able to interact with your same ideals and reach meaningful and valid teaching.</p> Brenda Stefania Guale Vasquez Carlos Julio Bastidas Martinez María Elena Moya Martinez María Angelica Indacochea Vasquez ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0 2019-08-28 2019-08-28 5 5 1 7 10.21744/irjeis.v5n5.720 Learning problems on brain disorders https://sloap.org/journals/index.php/irjeis/article/view/723 <p style="text-align: justify;">The learning problems have aimed at identifying the disorders or disorders of the brain, that has perceived as conflicts of the cognitive system prevent the acquisition of significant knowledge. Among the most frequent problems are mentioned three: Dyslexia, dysgraphia, and dyscalculia that make it impossible for students to increase reading, writing and mathematical processes, causing disadvantages in the development of skills and abilities. The need for teachers in pedagogical interventions has raised, since they work in conjunction with psychologists and psychologists in order to take control from the detection of a problem and progress, identifying weaknesses and strengths that facilitate the proper application of pedagogical techniques and methods. The methodology applied in this investigation was inductive-deductive, emphasizing the study of problems from the particular to the general and included techniques such as survey, interview, control cards, and observation card. This will have a significant impact on society as critical, analytical and reflective students have formed, who develop in the educational, family and social environment.</p> Elvira Judith Mero Chávez Willian Liborio Delgado Pibaque Washington Javier Mero Chávez María Mercedes López López ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0 2019-08-29 2019-08-29 5 5 8 15 10.21744/irjeis.v5n5.723 Teaching strategies and technology integration in developing blended learning of applied mathematics subject https://sloap.org/journals/index.php/irjeis/article/view/726 <p style="text-align: justify;">Applied Mathematics is a basic skill that determines the success of students in pursuing their education in the Department of Mechanical Engineering. Besides having to understand concepts and be able to solve cases according to the topics taught, students are also required to be able to solve mathematical engineering problems in the application of mechanical engineering. This makes it a difficult subject for the majority of students. This difficulty is overcome by applying blended learning. This is done by integrating curriculum design with strategy and use of learning technology so that innovation and teaching excellence are formed to support the learning process of students. Learning strategies that can be applied include explanations of concepts, problem-based learning, problem-solving and case discussions. This learning strategy is supported by multimedia technology and internet-based, namely video tutorials, discussion of material and examples of online-based cases and online discussion forums. The process of face-to-face learning in class is still being carried out. The key to the success of this learning lies in the ability to create interactions between students and fellow students, with teachers, with the community, with the material with the use of existing technology.</p> I Gede Made Karma I Ketut Darma I Made Anom Santiana ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0 2019-09-02 2019-09-02 5 5 16 25 10.21744/irjeis.v5n5.726 Radiology patient dosage monitoring for local diagnostic reference level https://sloap.org/journals/index.php/irjeis/article/view/785 <p style="text-align: justify;">The utilization of radiation for health in Indonesia shows a significant increase, it can be seen from the increasing number of modalities of ionizing radiation sources used and the types of medical actions carried out with the help of radiation. The use of radiation must be monitored to ensure the protection and safety of workers, patients, and the community. In Government Regulation No. 33/2007 which regulates radiation safety for workers, the community and the environment, it can be seen that one of the protection requirements that must be met in the utilization of radiation is the optimization of radiation protection and safety. In diagnostic and interventional radiology, optimization can be interpreted as an attempt to make the dose received by patients as low as possible while maintaining optimum image quality. In this study, the effort to optimize patient dose is carried out on general radiography with the application of Si-INTAN (<em>National Patient Dose Data Information System</em>).</p> Ida Bagus Made Suryatika Gusti Ngurah Sutapa I Gde Antha Kasmawan ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0 2019-09-30 2019-09-30 5 5 26 31 10.21744/irjeis.v5n5.785 A research and modeling of wave processes at the scattering of nonlinear acoustic waves on cylindrical bodies https://sloap.org/journals/index.php/irjeis/article/view/779 <p style="text-align: justify;">The article is devoted to the study of the scattering of nonlinear acoustic waves on cylindrical bodies. There was made a review of publications on the scattering of acoustic waves by inhomogeneities of the medium in the form of cylindrical bodies and shells. There were noted features of the small parameter method application in nonlinear acoustics. A three-dimensional model of the geometry of the problem in cylindrical coordinates was presented, nonlinear wave processes occurring between the falling plane and scattered cylindrical waves were described. The inhomogeneous wave equation is solved by the method of successive approximations of series expansion in a small parameter. An asymptotic expression for the acoustic pressure of a difference-frequency wave was obtained. A program for calculating scattering diagrams has been developed, and an algorithm for its operation is given. The acoustic pressure scattering diagram of a differential frequency wave on a rigid cylinder and its three-dimensional model are presented. The radius of convergence of the used method of expansion in a small parameter is determined.</p> Iftikhar B. Abbasov ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0 2019-09-30 2019-09-30 5 5 32 44 10.21744/irjeis.v5n5.779