http://ijaers.com/ Open Access international Journal to publish research paper en-us August To evaluate the trueness of two techniques for transferring the position of implants, with respect to the angles and distances between them, in completely edentulous arches rehabilitated with 3 and 4 implants. All patients were subjected to 2 impressions techniques: solid index (SI) and conventional impression using the open tray (MC) technique. The cast models were digitized by a laboratory scanner, and the generated STL files were imported into engineering software to measure the axes of the coordinates of the implants and the distances between the implants. The Wilcoxon test was used to identify the differences between the SI and MC groups (p http://ijaers.com/detail/solid-index-versus-impression-for-transferring-the-position-of-implants-in-mandibular-total-edentulous-arches-a-clinical-study-on-trueness/ Ana Larisse Carneiro Pereira, Henrique Vieira Melo Segundo, Maria de Fátima Trindade Pinto Campos, Míria Rafaelli Souza Curinga, Ana Clara Soares Paiva Tôrres, Adriana da Fonte Porto Carreiro http://ijaers.com/uploads/issue_files/1IJAERS-07202173-SolidIndex.pdf Objective: to map the production of knowledge and make considerations about the main updates and recommendations for the management of patients in cardiac arrest, diagnosed or suspected of having COVID-19. Method: narrative literature review. The source of information consisted of relevant publications in the literature carried out in June 2021, based on the narrative synthesis of evidence on the updates contained in the main guidelines and official recommendations published by bodies linked to the Brazilian and international health area: World Organization of Health, International Alliance of Resuscitation Committees, American Heart Association Guidelines (AHA 2020), European Council on Resuscitation, American College of Surgeons Committee on Trauma, National Association of Emergency Medical Technicians, Brazilian Association of Emergency Medicine, the Brazilian Society of Cardiology, Brazilian Association of Intensive Medicine, Brazilian Society of Anesthesiology and official associations and societies representing specialties affiliated with the Brazilian Medical Association, which recommend following practices specifically designed to care for patients diagnosed or suspected of having COVID-19. Results: there is a consensus that it is essential to completely dress the team with Personal Protective Equipment for respiratory isolation of aerosols during the service of cardiopulmonary arrest in this context, even if this delays the cardiopulmonary resuscitation maneuvers. Conclusion: health professionals from the multidisciplinary team involved in CPA care in the context of caring for patients suspected of or with a confirmed diagnosis of COVID-19 are exposed to numerous risks, and a range of challenges, and must follow the established protocol with scientific rigor. in health services, to maximize the effectiveness of CPR maneuvers, without losing sight of the objective of these actions, which is to increase survival, without giving up on preserving the health and integrity of the team and minimizing the risk of contagion by the virus and its spread. http://ijaers.com/detail/cardiopulmonary-resuscitation-in-patients-diagnosed-with-or-suspected-of-covid-19-a-narrative-review-of-the-literature/ Naiade Moreira de Oliveira, Viviane Costa Matos, Jonatas Crispim Magalhães de Oliveira, Diélig Teixeira, Meick Farias Negrão, Priscila de Figueiredo Viana, Dáwilla Ruanny de Almeida Palheta dos Santos, Danielly Guerra de Aguiar, Susi dos Santos Barreto de Souza, Sheyla Cristina Ferreira de Magalhães, Antônio Lourenço da Costa Neto, Marcieli Borba do Nascimento, Gilvana Rodrigues de Oliveira, Jessica Dias Ribeiro, Jaciara da Silva Barroso Martins, Bruna Luiza de Souza Costa, Leudilane Reis da Silva, Milena Oliveira Saldanha Pacífico, Vera Lúcia Queiroz Correa Vieira, Erika Renata Castilho Carvalho Sarraff, Bruna Carolina da Trindade Monteiro da Silva, Tamires De Cassia Silva da Cruz, Rafael Pilad Barata Mussio, Dermison Leão Pereira, Lorena Costa Londres, Lucas Garcia Rodrigues, Mayco Tadeu Vaz Silva, Laydiane Martins Pinto, Fabiana Nascimento Silva, Marcio Almeida Lins, Amanda do Socorro Furtado Silva, Eimar Neri de Oliveira Junior, Simone Batista da Silva dos Santos, Rosilene Ferreira de Sousa, Elen Priscila Garcia Assunção de Castro, Vanessa de Nazaré Mendes Favacho, Sandra Sueli de Medeiros Nunes dos Santos, Dienid Campos Azevedo, Dhyrlee Dennara Magalhães Silva, Samanntha Lara da Silva Anaisse, Gleyce Pinto Girard, Thamyris Abreu Marinho, Danielle Oliveira Maciel, Tatyellen Natasha da Costa Oliveira, Anderson Lineu Siqueta dos Santos, Larissa Pereira de Barros Borges, Emerson Glauber Abreu dos Santos, Elias Costa Monteiro, Rafaela Martins Dourado Gonçalves, Shirley Iara Martins Dourado, Enderson Vasconcelos de Lima, Michelly Lima Braga, Odilene Silva Costa, Vera Lucia Silva de Sousa, Lívia Sayonara de Sousa Nascimento, Glauber Marcelo Dantas Seixas, Raquel Fernandes Costa, Denise Karla de Abreu Silva, Paulo Alaércio Beata, Marcelo Williams Oliveira de Souza, Luana da Silva Rodrigues, Tobias do Rosário Serrão, Zaíne Melo de Oliveira, Iranete Pereira Ribeiro, Patrick Roberto Gomes Abdoral, Larissa Siqueira Rodrigues, Elisângela Claudia de Medeiros Moreira, Elcilane Gomes Silva, Ruan Rodrigues Felicidade, Nádia Maria Machado da Costa, Luís Edilson de Azevedo Ferreira, Ana Sheyla Falcão Modesto, Giovane José de Magalhães Duarte, Wanda Carla Conde Rodrigues, Maguida Patrícia Lacerda Cordeiro Oliveira, Simone Aguiar da Silva Figueira, Jaqueline Cardoso Marcena, Maicon de Araujo Nogueira*, Djenanne Simonsen Augusto de Carvalho Caetano, Camilo Carvalho Gomes, Anne Caroline Gonçalves Lima, Diego João de Lima Arrais, Elyade Nelly Pires Rocha Camacho, Antonia Margareth Moita Sá http://ijaers.com/uploads/issue_files/2IJAERS-07202163-Cardiopulmonary.pdf Injection Mold Design is the process of designing and developing the tools, methods and techniques needed to improve efficiency and productivity. The basic management conditions are learned from conceptual development to product production. The impact of varied factors studied supported processing parameters. Since quality and productivity are two important conflicting goals in any machining process. Quality has got to be somewhat compromised, ensuring high productivity. Similarly, productivity is reduced, but efforts to enhance quality are channelized. to make sure top quality and productivity, it's necessary to optimize the machining parameters. Various reactions of injection molding process quality supported performance parameters and methods are studied. the purpose of this paper is to illustrate the state of the plastic injection molding process. The working conditions are satisfied by the production of a product based on high quality. http://ijaers.com/detail/a-review-on-plastic-moulding-manufacturing-process-and-parameters/ Shailesh Singh, Sunil Sahai, Manoj Kumar Verma http://ijaers.com/uploads/issue_files/3IJAERS-08202053-AReview.pdf In a recent period, construction sector is fastest growing sector in India because day by day population increases in rapidly which needs the shelter. The construction sector use vast amount of natural recourses and produce significant quantity of construction and demolition waste. These wastages lead lots of environmental effect. This result requires new technology to overcome this problem which is Prefabricated Sandwich Panel System in India. http://ijaers.com/detail/prefabricated-sandwich-panel-system-in-india/ Vaishaliben Ratilal Baldha http://ijaers.com/uploads/issue_files/4IJAERS-07202147-Prefabricated.pdf The urban public transit sector for bus passengers has undergone significant strategic changes, motivated by the issue of qualitative management in its service. It has been noticed in the literature that management models, which consider sustainability, eco-efficiency and human capital, are able to value the business, combined with customer satisfaction, quality, and behavior. This article aims to conduct a bibliographical research with the aim of analyzing concepts related to the quality of public road transit service. The methodology was exploratory and explanatory through a literature review on intelligent public transit service models by users. Based on the proposed constructs, the results pointed to the following trinomial: Quality, Satisfaction, and Behavior. It was possible to identify, through the research, models that indicated that service satisfaction is directly related to quality. Nevertheless, the matter is not merely related to quality, but rather social, environmental and economic behavior. Findings were identified in the literature that pointed to the need to build an Intelligent Management Model for public transit, which are qualitative management methods that adapt to user needs, considering urban, environmental, social, behavioral and economic aspects. http://ijaers.com/detail/analysis-of-intelligent-public-transit-service-models-by-users-a-literature-review/ Filipe de Castro Quelhas, Prof. Luis Perez Zotes, Leonardo Soares Francisco de Almeida http://ijaers.com/uploads/issue_files/5IJAERS-07202165-Analysis.pdf Educational technology is now a necessity for teaching and learning and this necessity became even bigger with the pandemic of COVID-19, where many students can't access the facilities of their educational centers. Virtual Reality (VR), Augmented Reality (AR) and Remote Laboratories are great trends for the future of education. While remote laboratories bring the opportunity of access to experimentation that many students don't have, VR/AR provides an immersion that completely changes the user's experience. These tools bring several opportunities for the classroom, mainly when working with STEAM subjects. Therefore, this paper seeks to verify the current situations of integration of VR/AR techniques in remote laboratories presented in research papers. Through systematic research, the authors researched open access papers published in the last five years (period 2017-2021). The databases chosen were IEEE Xplore, Science Direct, and Scopus. After finding the papers, it was possible to identify successful situations of integration of VR/AR techniques in remote laboratories and also to verify expectations and trends for VR/AR integrated to remote laboratories that the authors of these papers presented. After the publishing of this paper, the authors will seek to research further on VR/AR and remote laboratories to develop research projects and educational software. http://ijaers.com/detail/use-of-vr-ar-techniques-in-remote-laboratories-a-systematic-review/ Isabela Nardi da Silva, Karmel Cristina Nardi da Silva, Juarez Bento da Silva, Simone Meister Sommer Bilessimo, Leticia Rocha Machado http://ijaers.com/uploads/issue_files/6IJAERS-07202162-Useof.pdf The swarm robotics inspired from nature is a combination of swarm intelligence and robotics, which shows a great potential in several aspects. Swarm robotics is a relatively new and rapidly developing field which draws inspiration from swarm intelligence. It is an interesting alternative to classical approaches to robotics because of some properties of problem solving present in social insects, which is flexible, robust, decentralized and self-organized. Fire detection and extinguishment are the hazardous job that invariably put the life of a fire fighter in danger. By putting a robot to perform this task in a fire-prone area, it can aid to avoid annoying incidents or the loss of lives. This paper describes the development of Swarm Intelligence Fire Fighting Robot using (SIFFR) that is equipped with the basic fighting equipment that can round through the hazardous site via a guiding track with the aim of early detection for fire. When the fire source is being identified, the temperature will be promptly extinguished using the fire extinguishing system that is mounted on receiving robots platform. To detect for fire source, the input from temperature sensors were finely-tuned in relation to the surrounding area, external interference and the mobility of the SIFFR prior the deployment of the platform. http://ijaers.com/detail/swarm-intelligence-based-fire-fighting-robot/ Savita Jadhav, Shreyas Jadhav http://ijaers.com/uploads/issue_files/7IJAERS-07202148-Swarm.pdf Digital games have been presented as mediation tools in the Learning Process area in educational contexts. As such, this article aims to present the educational digital game ‘ArteSaga’ which allows the learning of Art History in high school. For that to happen, a survey was conducted in IFRN – Campus Parnamirim, in four second grade classes of high school, allowing for the development of software, whose conductive approach is the Design Methodology. This investigation started with a bibliographic research, followed by a questionnaire applied to the students, with the purpose to determine the digital game shaping, and it is developed in C# language and its graphic design created with Raster graphics. The game ‘ArteSaga’ was created and validated presenting the content related to the Prehistoric and Ancient Art periods, and the final prototype was exhibited at scientific research expositions and scientific and technological events in the area. http://ijaers.com/detail/the-digital-game-artesaga-as-a-methodological-strategy-for-teaching-art-history/ Francy Izanny de B. B. Martins, Isaque Barbosa Martins, Joaquim Felipe T. Belchior, Kiev Luiz F. Guedes, Rodrigo Eduardo D. Barbalho, Sandro Sinval de Souza http://ijaers.com/uploads/issue_files/8IJAERS-07202159-TheDigital.pdf The study analyzed the variables that interfere in the choice of the soil cultivation system, using conventional and/or biodynamic agricultural practices for Vitis vinifera grapes production. The method was an exploratory and descriptive study of quali-quanti analysis. The intentional sample, for convenience and not probabilistic, had 26 vineyards of Vitis vinifera Chardonnay being 19 vineyards of the conventional cultivation system and 07 in transition to the cultivation system using biodynamic agriculture practices. It was concluded that economic variables are the driving force in decision making more than the environmental or social issues in the management of the cropping system, as well as it was noticed the tendency that some properties are looking for new cultivation practices. In the case of biodynamic agriculture, however, it is still tenuous signal that, in this case, the environmental issues could gain a greater value in equalization of alternatives for decision making in vineyard management and especially in soil care. http://ijaers.com/detail/modeling-and-decision-making-applied-to-agriculture/ Cláudia Brazil Marques, Fabrício Moraes de Almeida, Carlos Alberto Paraguassú-Chaves, Carla Dolezel Trindade, Simão Aznar Filho, Simão Dolezel Aznar, Carlos Alberto Dolezel Trindade, Levi Pereira Granja de Souza, Ricardo Guanabara http://ijaers.com/uploads/issue_files/9IJAERS-0820216-Modeling.pdf Technologies change very rapidly, and universities need to be increasingly connected to the needs of the industry. With the advent of industry 4.0, the transformations in curricula must be continuous. The current scholar must be a professional future who finds new solutions, who knows how to make a decision based on the data, and who can communicate with different areas. The insertion of entrepreneurship practices towards the development of innovative products in computer courses can academically boost the scholars' characteristics necessary to the today's world, such as teamwork, problem-solving, systemic vision, communication, protagonism, and creativity. A new approach that makes it possible to address the needs of the locality to the surroundings of the educational institution, to highlight the strengths of the scholars in terms of solving such demands, and to propose innovative works strongly linked to the local productive arrangement. The design of the approach follows an innovation framework proposed by Steinbeis University-SIBE, which expands and potentiates the phases of Design Thinking in a larger number of more detailed steps that guide well-defined activities. The results presented by the use of the approach shows that most of the work developed has the potential to become an innovation, which will help in local and regional development. http://ijaers.com/detail/towards-innovation-on-computer-science-courses/ Diones Hohemberger, Andréia dos Santos Sachete, Fábio Diniz Rossi http://ijaers.com/uploads/issue_files/10IJAERS-08202110-Towards.pdf This study aims to analyze the participation of municipal and state public management in fostering the entrepreneurial ecosystem in the municipality of Imperatriz (MA) and is based on the six pillars proposed: public policies, financial capital, culture, institutions support, human resources, and markets. The descriptive research method was used; the semi-structured interview for data collection; descriptive document analysis and the application of sensemaking techniques, such as visual map and narrative strategy. The research is also qualitative, by accessibility criteria, and in the field for comparison with the data obtained in the mapping. About documentary research, a temporal scaling of the last ten years was carried out. It is observed, in view of the mapping, that there is engagement and efforts of the municipal and state public administration directed towards entrepreneurial actions, above all, these actions need to be more widespread among higher education institutions. The data obtained in the field analysis were relevant to this investigation, showing the inclusion and participation of public management in the development of actions that optimize and develop the entrepreneurial ecosystem in the municipality. The data obtained in the two types of analysis were compared by triangulation to promote a clear understanding of the role of Empress' public management within the investigated scenario. Therefore, it is concluded that the objective of this study at the end of the assessment was achieved. http://ijaers.com/detail/public-management-role-for-the-encouragement-of-the-entrepreneurial-ecosystem-in-imperatriz-ma-brazil/ Sandna Nolêto de Araújo, Marcela Barbosa de Moraes, Antônio Esmerahdson de Pinho da Silva http://ijaers.com/uploads/issue_files/11IJAERS-07202134-Public.pdf This article is the result of a case study on what motivated students at the Diana Colaça Education Center (CEDC) to chose the administration course and what their expectations were when they finished the course. The main objective is to analyze the aspects that influenced the students of the administration course to choose the referred course, describing whether there was any influence , social, family, professional or of another level on the choice, analyzing the degree of satisfaction of students in relations to the which is being studied in the course, as well as understanding what the expectations of these students are after completing the higher level. It started from a theoretical and introspective analysis from bibliographical sources, extending to the field of case study with collection, analysis and interpretation of data, facts and phenomena that influence students to choose higher education in the administration course. With the great diversity in higher education offer, realizing that the demand for the administration course is very present, arouses the curiosity of the educational and social class to try tounderstand what drives these students to choose this course, and throughout the research realizing that they did not try to know the course and its areas of expertise, its pros and cons, before joining it, makes us believe that when they graduate, such professionals will not have "passion" for their professions, thus becoming frustrated professionals and in some sometimes disabled. http://ijaers.com/detail/what-motivated-students-at-the-diana-cola-a-education-center-to-choose-the-administration-course-and-what-are-their-expectations-when-completing-the-course-a-case-study/ Maria Eliane Nunes Freitas, Felipe Neris Torres de Sousa http://ijaers.com/uploads/issue_files/12IJAERS-07202169-Whatmotivated.pdf This article seeks to show the experience of the extension course offered during the pandemic in the year of 2020 called "Processes, Technologies, Management Systems and the Economic Context" of the Bahia State University (UNEB), from the perspective of the course participants, with the objective to carry out an evaluation about it, from the following question: What is the evaluation of the course participants in relation to it?. The methodology was a case study with 2 phases. The first through 3 objective questions using the lieutenant. The second through form on the UNEB Moodle platform. As a result, we have that students were favorable to the type of instruments used by professors with the use of the Inverted Classroom to contemplate their improvement and professional qualification in the area of Management. http://ijaers.com/detail/extension-activities-of-administration-during-pandemic-university-of-the-state-of-bahia-2020/ Aliger dos Santos Pereira, Jader Cristiano Magalhães de Albuquerque , Rosana Cruz Marques da Silva http://ijaers.com/uploads/issue_files/13IJAERS-08202113-Extension.pdf The new Coronavirus (COVID-19), has already infected more than 5 million people in more than 181 countries, has been causing numerous socioeconomic problems and increasing morbidity and mortality related to the infection. The virus still lacks adequate, effective and safe pharmacotherapy and even vaccinated people are still at risk of acquiring the disease. Therefore, the focus has been on prevention and health promotion, thus contributing to the reduction of transmission. In this context, the doctor, nurse, pharmacist, physiotherapist has been playing a fundamental and vital role in controlling the transmission of the disease and meeting the health needs of the community during the crisis, dissipating information based on evidence, epidemiological control and strengthening of rational use of medicines. This paper aims to address the pharmaceutical conduct in pharmacy during the COVID-19 pandemic. http://ijaers.com/detail/pharmaceutical-conduct-applied-to-pharmacies-during-the-sars-cov2-pandemic-covid-19/ Cristianne Confessor Castilho Lopes, Heliude de Quadros e Silva, Eduardo Barbosa Lopes, Youssef Elias Ammar http://ijaers.com/uploads/issue_files/14IJAERS-08202114-Pharmaceutical.pdf The present paper aimed to carry out a theoretical-analytical study of childhood obesity in Brazil, not only as an approach and its diagnostic and prevention aspects, but above all to verify its prevalence in the Covid-19 pandemic periods. In this investigative scenario, the search for scientific articles was carried out through the MEDLINE, Ovid and Scielo databases. Terms were used in our search for review articles, clinical trials, and observational studies. In view of our bibliographical study, it was possible to verify that there was a prevalence of obesity in children who remained sedentary at home and absent from any sport, considering that the dysregulation of their diet was associated with lack of locomotion and leisure. Perceived by example, we also sought directly indicated references. Our results pointed to the fact that the prevalence of childhood obesity tripled during the COVID-19 pandemic, and this should be prevented with medical and nutritional monitoring, but especially with the help of indoor measures, by parents or relatives. next. http://ijaers.com/detail/a-obesidade-infantil-no-brasil-e-sua-preval-ncia-nos-tempos-pr-pand-micos-da-covid-19/ Angélica Cristina Castro Soares, Wilder Kleber Fernandes Santana, Richardson Lemos de Oliveira, Hermes Candido de Paula, Priscilla Duarte Soares Correa, Yuri Alexander dos Santos Rôas, Itaecio Felipe Silva, Vítor Diego de Pontes Simões, Edilane Aparecida Alves Canto, Jéssica Ribeiro da Silva, Janaina Kelly da Silva de Souza de Araújo, Allef Algemiro Gawlinski de Ávila http://ijaers.com/uploads/issue_files/15IJAERS-0820213-ChildObesity.pdf The management system adopted in the agricultural production influences directly on the biodiversity of the growing areas, whether inhibiting or favoring the proliferation of the natural biota. This article aims to highlight the influence of agronomic practices in certain cropping systems that interfere in the control of the Phyto sanity by the participation of the biodiversity. The grater part of the agricultural Production in the world comes from the conventional growing system, which gained strength from the ‘Green Revolution’ in mid-twentieth century, but due to its production techniques that contribute negatively for the environmental devastation, mainly by the monoculture, use of non-renewable inputs, agrochemicals, and others, not respecting the environment, alternative forms of Productions based on organic or agroecological management emerged with the adoption of practices which use renewable inputs, polyculture, green fertilization, organic fertilization, nutrient cycling, banning of agrochemicals, and mainly respecting social requirements, cultural and environmental. Thus, the alternative management tends to provide the development of the agrobiodiversity, essential for the adoption of practices related to the biological control, with no use of pesticides, enabling a food production with quality, with no chemical residue and ecologically correct, meeting the world requirements of the world market. Therefore, researches are needed, having a greater interaction between the researches, extension works, growers and society, All in the search of the environmental sustainability in the agricultural production. http://ijaers.com/detail/the-influence-of-the-agricultural-management-systems-in-the-maintenance-of-the-biodiversity-in-benefit-of-the-phyto-sanity-control/ Edvando Manoel de Souza, Ana Rosa Peixoto, Fábio Del Monte Cocozza, Cristiane Domingos da Paz, Gertrudes Macário de Oliveira, Marcos Antônio Vanderlei Silva, Thiago Francisco de Souza Carneiro Neto http://ijaers.com/uploads/issue_files/16IJAERS-08202152-Theinfluence.pdf The novel coronavirus disease also known as COVID-19 has disrupted almost every sector of human development. From mental health to physical wellbeing, from sports to tourism, from schools to offices, from travelling to leisure, from entertainment to social life, from exports to local sales everything has been disordered. While everyone around the globe was under lockdowns and strict stay at home orders were given by the respective governments, the businesses, factories and enterprises were locked and sinking to new lows. http://ijaers.com/detail/shipment-delivery-and-covid-19-an-indian-context/ Mehtab Alam, Shamsh Parveen http://ijaers.com/uploads/issue_files/17IJAERS-08202111-Shipment.pdf The motivation for this study was to measure the impact that Twitter publications have on voting and the choosing of winners. To this end, an experimental study was carried out based on a set of data collected from tweets (published on Twitter) related to the reality show “Big Brother - A Revolução”, broadcast on a television station in Portugal, TVI. The procedure adopted for conducting the experiment consisted of creating a completely self-contained service, built from scratch for this project, and the correspondent implementation, in order to allow the collection, storage, cleaning, pre-processing and analysis of as many tweets as possible, as long as they are associated with the program. A tool to analyze the polarity (positive, negative or neutral) of the sentiment was implemented and applied to the phrase (or phrases) contained in the tweet and stored in a database. Then, running in the database, the tweets were divided according to how they referred to one or more competitors. Throughout the time that the reality show existed, the results of this experiment were public presented in daily/weekly summaries and posted on Twitter through a “Twitter bot”. http://ijaers.com/detail/portuguese-sentiment-analysis-applied-to-a-reality-show-using-twitter-and-nlp-in-real-time/ Marta Azevedo, José Pinheiro , Cecília Castro http://ijaers.com/uploads/issue_files/18IJAERS-0820211-Portuguese.pdf Thermoelectric materials are considered prime in converting energy, thanks to its nature to translate heat into electricity openly. Low efficiency and the intricacy in fabrication restrict their applications commercially. Moreover, there are certain thermoelectric materials such as alloys of telluride owing to their toxicity present peril to the environment. There is scarcity in present examination to get an ecological gracious thermoelectric material which is available in abundance to be utilized in large volumes owing to the low efficiency. The paper presents a review of such thermoelectric material which is ecological gracious. In the beginning, a number of techniques employed in advancing the figure of merit (ZT) is offered, then an in -depth review of several thermoelectric materials which are silicon-based is showed. N-type doping of Mg2Si0.75Sn0.25 among aluminum along with lead at operational temperature of 850 K scaled up the value of ZT by a factor of 2. Considerable addition in carrier concentration resulted in the attainment of figure of merit with peak value of 1.4. Techniques such as nanostructuring and doping have boosted silicides such as HMS to show a remarkable achievement in the attainment of dimensionless figure of merit. Iron disilicide (FeSi2), Chromium silicide (CrSi2) and Cobalt Silicide (CoSi) have shown their worth to be employed as thermoelectric materials in industries in near future. It is also recommended to analyze supplementary types of metal oxides and organic materials which exhibit thermoelectric traits. http://ijaers.com/detail/a-review-on-silicide-based-materials-for-thermoelectric-applications/ Sarabjeet Singh, Yogesh Chandra Sharma http://ijaers.com/uploads/issue_files/19IJAERS-07202172-Areview.pdf This paper presents the studies and specifications of the development of a computational platform for distributed generation connection evaluation that uses the concept of Hosting Capacity and automated individual analysis of the connection as well as a protocol to utilize this platform. The risks and problems linked to the unbridled and without criteria connection of distributed generation to the network and its connection processes are addressed. Finally, a case study applied to a real network is presented, evidencing the mitigation of potential power quality problems brought by the insertion of distributed generation and other benefits achieved with the use of the solution developed and applied. http://ijaers.com/detail/platform-for-distributed-generation-connection-assessment-in-brazilian-electrical-grids/ Daniel Szente Fonseca, Anna Giulia Queiroz Costa, Renan Machado Sales, Luiz Henrique Leite Rosa, Cíntia Gonçalves, Marcelo Aparecido Pelegrini http://ijaers.com/uploads/issue_files/20IJAERS-0820215-Platform.pdf This paper describes the overpassing process using a case study from southern Brazil, that present a decadal pulse of sediment entering in the system. A transgressive dune field extends across a headland from Santinho beach to Ingleses beach. Analysis of precipitation data (1961-2014), wind direction and speed (1964-2014), aeolian drift potential (DP), aerial photographs/satellite images (between 1938 and 2016) and morphological data (2002, 2010 and 2014) make it possible to analyze the decadal-scale dune field evolution. The wind historical data showed southern wind as the stronger, moving the dune crests to north. The rainfall analysis presents an increasing trend leading to a decrease in drift potential and favors dune stabilization by vegetation growth. There is a decadal pulse of sediment inputs to the system, as well. The northern sector of Santinho beach has a positive budget and provides about 6,000m³/year of sediment to the foredune. Then, with southern winds, the sediment migrates into the dune field (about 3,000-5,000m³/year) reaches Ingleses by overpassing, ensuring a positive sediment budget for the system that occurs at east side of the Ingleses beach. http://ijaers.com/detail/stabilization-at-santinho-ingleses-dunefield-southern-brazil-what-will-be-the-future-of-sediment-input-to-ingleses-beach-2/ Maiara Werner Pinto, Antonio Henrique da Fontoura Klein, Adrián Acevedo, Melisa Menendez http://ijaers.com/uploads/issue_files/21IJAERS-08202112-Stabilization.pdf The use of medicinal plants has grown over the years, this is due to the popular culture that already exists and to the increase in people's knowledge about the benefits of these plants. Dillenia indica popularly known as elephant apple or april flower is considered a medicinal plant that, according to studies, has antidepressant, anti-leukemic, anti-inflammatory, antioxidant, anti-diabetic, anti-hyperlipidemic, antimicrobial, cytotoxic and anxiolytic properties. This factor aroused interest in obtaining extracts of this to evaluate the antimicrobial action of these extracts. To obtain the extracts, separate samples of the leaves, bark and seeds were kept in contact with ethyl acetate for 3 days with daily agitation. After this period, the extract was filtered and dried by rotary evaporation. The analysis of the chemical composition of the extracts was performed by a Gas Chromatography coupled with Mass Spectrometry. The antimicrobial effect of the extracts was verified by the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The values of MBC and MIC of the extracts of leaves, bark and seeds against the microorganisms in question were 0.1% v/v. Employing chromatography it was possible to identify several organic acids in the three extracts of D. indica. These acids are probably the compounds responsible for the antibacterial activity shown by the studied extracts. http://ijaers.com/detail/study-of-the-chemical-composition-and-amtimicrobial-action-of-dillenica-indica-peel-fruit-and-leaves-extracts/ Gabriela Celeguim, Wanderson de Oliveira dos Santos, Ana Claudia Granato, Mônica Hitomi Okura http://ijaers.com/uploads/issue_files/22IJAERS-08202119-Studyof.pdf This work deals with the manifestations of cowboy cultures in the Brazilian Semiarid Region, more specifically in the municipality of Andorinha, Bahia. Throughout the work, four cultural manifestations of cowboys are described and analyzed from the perspective of ethnographic practice anchored in the perspective of qualitative research, which allows us, within the ethics, rigor and discipline required by the act of investigating, to portray the life contexts of concrete subjects. Thus, some events will be presented where the observations and their contextualization took place, their inscription in the historical and social fabric, interspersing the perceptions of the subjects about them within the context of their experiences, their cultural practices. http://ijaers.com/detail/breaking-ways-opening-variants-cowboy-culture-in-the-city-of-andorinha-brasil/ Monica Andrade Souza, Cosme Batista dos Santos http://ijaers.com/uploads/issue_files/23IJAERS-08202138-Breaking.pdf The aim of this article was to analyze the Health and Safety at Work Policy of the Federal Public Servants (PASS), based on the case study of the SIASS Univasf Unit. The theoretical dialogues in this study were built from the concepts that make up Worker's Health. A qualitative and quantitative research was chosen as a methodological approach. In order to infer its results, we opted for the triangulation process consisting of a combination of three technical collection procedures: documentary research, in-depth particulars and online surveys. Qualitative data were prepared using content analysis based on Bardin (2016) with the support of the Atlas.ti 8 software and quantitative data using univariate descriptive statistics using Microsoft Excel. http://ijaers.com/detail/the-occupational-health-and-safety-care-policy-pass-the-case-of-the-siass-univasf-unit/ Ana Carla Mendes Coelho, José Ricardo Costa de Mendonça http://ijaers.com/uploads/issue_files/24IJAERS-08202139-The.pdf The modification of the ice block machine using a double crusher system in this study has dimensions of 100 cm long, 80 cm wide and 115 cm high. Some of the machine components are made using stainless steel and steel. The propulsion engine uses a 7 HP gasoline engine. The working system of this machine is to use two ice block counters that rotate in opposite directions so that it will speed up the process of chopping ice blocks. The number of blades in each chopper is 36 and 42 blades. The engine production capacity at 800rpm shaft rotation produces 117,47 kg/minute or 7.048,2 kg/hour. The results of the chopped size varied from 2 to 7 mm. This machine is very effective with a target output of 3000kg production capacity while the actual output is 7048.2 kg/hour. http://ijaers.com/detail/performance-test-on-modified-block-ice-crusher-using-double-crusher-system-in-sorong-west-papua/ Anifudin, Sugianto Halim, Maimun http://ijaers.com/uploads/issue_files/25IJAERS-0820219-Performance.pdf The aim of this study was to describe the influence of physical activity practice by women with breast cancer undergoing chemotherapy treatment and its side effects. This is a descriptive, cross-sectional study with a quantitative approach, carried out from September to November 2015. Among the women interviewed who practice physical activity, walking was the most prevalent activity (49.5%). There was a predominance of the presence of symptoms in women who do not engage in physical activity, however, among those who do not have symptoms, those who do not engage in physical activity predominated. The most common symptoms reported by them were nausea and fatigue, both corresponding to the group of women who did not perform any activity. It is concluded that the regular practice of physical activity brings with it several beneficial factors for the body and presents itself as a determining factor for the reduction of side effects in patients with breast cancer undergoing chemotherapy. http://ijaers.com/detail/influence-of-physical-activity-on-side-effects-in-women-with-breast-neoplasms-undergoing-chemotherapy-treatment/ Cristina Albuquerque Douberin, Liniker Scolfild Rodrigues da Silva, Rayanne Beatriz Barros Marinho, Edivaldo Bezerra Mendes Filho, Maria de Fatima Silva Nascimento, Fernanda Barbosa dos Santos, Richelly do Nascimento Pereira http://ijaers.com/uploads/issue_files/26IJAERS-0820218-Influenceof.pdf This scientific initiation article will bring up current and very relevant questions about the effects suffered in the virtual world after the announcement of a pandemic, with regard to the growing number of crimes committed by virtual means, considering that the use of the internet for practically any and all daily activities became mandatory. We will show the activities that needed to adapt to the new reality, as well as the increase in cybercrime that came to affect, in particular, those whose expertise and technological knowledge do not match reality. We will also talk about the victims of these crimes and conclude with a cybersecurity protocol which can be applied to minimize risks and hinder the actions of opportunistic offenders. http://ijaers.com/detail/covid-19-effects-on-cybersecurity-issues/ Thiago Jose Ximenes Machado, Luis Borges Gouveia http://ijaers.com/uploads/issue_files/27IJAERS-08202130-Covid-19.pdf Storytelling in traditional communities is passed on through orality from one generation to the next, connecting the past with the present by recalling the latent memory of their ancestors. It is a magical and playful moment, told and narrated during the bean threshing, awakening the awareness of aspects related to the care for life and the environment, while establishing the feelings of collectivity, union, and collective organization, making these moments a process of struggle and resistance to keep their traditions alive. Thus, the present study aims to analyze how the ancestral knowledge perpetuated in storytelling contributes to the processes of struggle and resistance of the sociocultural identity of the quilomba community Sítio Veiga, in Quixadá, Ceará. To this end, the production of this article had as its methodological apparatus the exploratory-descriptive typology with a qualitative approach making use of semi-structured interviews whose guiding modality was ethnographic and participant observation, which are fundamental methods for a greater approximation and interaction with the social subjects of the research.The results of this study point to the relevance of these social subjects narrating their stories from their own point of view, placing themselves as the protagonists of their stories, with this place of speech permeated by struggle and resistance, forming a web of meanings that unites them in favor of social organization and by the stories narrated from one generation to the next. http://ijaers.com/detail/storytelling-in-the-bean-threshing-a-form-of-struggle-and-resistance-for-tradition-and-ancestral-memory/ Fernanda Ielpo da Cunha, Ana Maria Eugenio da Silva, José Gerardo Vasconcelos, Ana Flávia Ferreira da Silva, José Rogério Santana, Olienaide Ribeiro de Oliveira Pinto, Juan Carlos Alvarado Alcócer, Alexandre Oliveira Lima, Sídney Guerra Reginaldo http://ijaers.com/uploads/issue_files/28IJAERS-08202121-Storytelling.pdf Semantic Segmentation is a technique in Computer Sciences (CS) to extract information from images. Recent advances in Artificial Intelligence, particularly in Deep Learning, semantic segmentation combined with techniques such as convolutional neural networks have presented better results and exciting results. Due to its power and better results than classical approaches, there has been an increase of research articles in Remote Sensing that propose the use of deep learning based semantic segmentation to extract information from satellite or airborne imagery. In this paper we surveyed the state-of-the- art of Semantic Segmentation in Remote Sensing, from 2010 until 2020 by identifying the research topics, the number of publications and citations, the key researchers and the leading countries. Furthermore, we also pointed out the key algorithms, the main convolutional neural network architectures, backbones and the most used evaluation metrics. In addition, some datasets were highlighted, as well as some frameworks that can be used to train semantic segmentation deep neural networks. Finally, we shown some applications of the showcased techniques and provide a conclusion with the research opportunities of Remote Sensing Semantic Segmentation, with respect to some bleeding-edge scientific papers published in 2020 in CS. http://ijaers.com/detail/a-review-of-remote-sensing-applications-on-very-high-resolution-imagery-using-deep-learning-based-semantic-segmentation-techniques/ Philipe Borba, Edilson de Souza Bias, Nilton Correia da Silva, Henrique Llacer Roig http://ijaers.com/uploads/issue_files/29IJAERS-08202129-A Reviewof.pdf The tax waiver, which is an increasing discussion in Brazil, motivated this study, that objectified investigate what is the tax waiver impact on profits and dividends as an economic efficiency instrument. It also searches to identify if there is a statistic correlation that can explain the maintenance of this public expenditure. The quantitative approach research, used two independent scenarios. In the first one, it was verified in relation to the period of 2007 to 2016, the tax expenditures and tax waiver correlation, with economic growth, GDP and investments indicators. In the second one, it was verified through a multiple regression, the correlation between tax waiver and profits and dividends, with economic growth, GDP and investments indicators. It was shown that in regime of exception, as it is in the current recessive economic period, the tax waiver on profits and dividends economic efficiency find itself compromised. Affected by the constant inflation raises, it was verified that the waived values are not explained by the variable that, in 1995, justified their institution – the investments. As of those results was possible to identify that the budget balance pass through a tax policy similar to the successful examples observed in OECD country members, that is capable of balance the taxation profit, corporate production and that contribute to companies' cash flow production capacity and more investments. This study aims to not only contribute to draw tax restructuring plans, but also to instigate the proposes in Brazilian tax legislation changes debates that finds horizons to clear the Sistema Tributário Nacional, that in time, through an effective and efficient taxation, contribute to a tax justice and budget balance. Future researches can evaluate these results in a context with a more representative sample of these data and obtain more statistic sensibility. http://ijaers.com/detail/the-tax-waiver-impact-on-profits-and-dividends-as-an-economic-efficiency-instrument/ Michael de Alencar Silva, Fabio do Nascimento Siqueira da Silva, Nelson Hein http://ijaers.com/uploads/issue_files/30IJAERS-08202124-TheTax.pdf Ready to eat snack and health bars have sturdily occupied space in the global market and are high in demand as nutritional supplements for people on the go and weight watchers especially people consuming calorie-controlled diets. Spirulina is a unicellular micro alga grown in water bodies containing 50-70% protein including all essential amino acids, fatty acids, vitamins and minerals. The soy protein isolate is good source with high bioavability of protein (90%) and it is easily digestible too. Bengal gram is an old pulse with high protein ratio about 80% with several vitamins like vitamin A, C, E, K and B-complex and minerals like phosphorous and magnesium. Peanuts are essential source of protein, lipid and fatty acids and called as poor man’s protein due to its low price. It contains essential vitamins and minerals useful for healthy immune system, nerve function, blood coagulation mechanism, bones and teeth formation. In present investigation snack bars prepared with bengal gram, peanut, oats, puffed rice, desiccated coconut, soy isolate, spirulina, cardamom powder and binding syrup were analyzed for organoleptic properties and stored at room temperature after packaging with butter paper and polypropylene pouch for 90 days to record changes in nutritional, functional, organoleptic and microbial quality attributes. The results showed increase in moisture content whereas decrease in ash, fat, protein and fiber content in stored snack bars. The microbial count (Total plate count, yeast and mould) was increased throughout storage period at room temperature from 45th day of storage and sensory score for all the sensory parameters (Colour and appearance, flavour, taste, texture and overall acceptability) was decreased with the advancement in storage period. The snack bars with spirulina could be stored for the period of 90 days in polypropylene pouch at room temperature in good condition. http://ijaers.com/detail/effect-of-storage-on-quality-of-spirulina-snack-bars/ Doiphode S. S., Mane K. A. http://ijaers.com/uploads/issue_files/31IJAERS-0820214-Effectof.pdf Agribusiness is one of the main pillars of the world economy, where the agriculture sector is fundamental to the economy of countries and contributes strongly to poverty reduction, positive balance of trade and inflation control. The countries have government policies that subsidize agricultural credits with low financing rates in order to encourage the sector. With the expansion of agricultural areas to meet the growth in the world population, its necessary a technological revolution in the field, as is increasingly necessary to mitigate risks in the financeable area, with quick and transparent inspection. Thus, a tool in Python language was develop containing a methodology for monitoring the cycle of cultivation in agricultural areas with emission of alerts messages in cases of deviations in the behavior of the planted area. Delta NDVI and Delta NIR models were developed to monitor agricultural cycle and were able to perform remotely the multitemporal detection of changes. The study was in an area in Brazil, using 9 images from the Nano Satellite Planet, from 2017 to 2019. The results were assertive, because the classifications of methods detected changes in the patterns of agricultural, emitting signals in cases of deviation from behavior with alerts for loss of vegetation from initial cycle, full and final of maturation. As the variation between models was not expressive, Delta NIR was an attractive alternative for change detections because uses only one band, the processing is less costly, with low response time and good performance, with execution in less than half time. Thus, the models were assertive and can facilitate inspection by of the countries with subsidies for agriculture, whether by inspectors from the Government or by Financial Institutions, in addition to reducing costs in the operational process concentrating visits only for areas of large hectares. http://ijaers.com/detail/remote-sensing-for-risk-mitigation-in-agricultural-financings-multitemporal-change-detections-in-agricultural-areas-using-the-delta-nir-and-delta-ndvi-models/ Sumaia Resegue Aboud Neta, Edilson de Souza Bias http://ijaers.com/uploads/issue_files/32IJAERS-08202131-Remote.pdf This research aimed to identify the predominant leadership style among the leaders of the 1st Military Police Battalion of Rondônia, among the leadership styles focused on Relationship, Task or Situation. As for the methodology, the research is classified as quantitative-descriptive since a questionnaire was applied to the respondents to identify which leadership style was perceived by the followers. The questionnaire was distributed electronically, using a link sent by the Slack application,means of communication used by the battalion. The questionnaire was based on the Management Style Assessment Scale (EAEG), developed by Melo (2004). This questionnaire consists of 19 statements about how leaders act, which must be evaluated by the respondents and rated from 1 to 5, with the respective extremes: Never acting like this and Always acting like that. The results achieved showed that the style focused on the Task presented an average of 4.314, while the style focused on the Situation presented an average of 4.231, finally the style focused on the Relationship presented an average of 4.009. Therefore, it can be concluded that the 1st Military Police Battalion of Rondônia presents the style that is expected in a military institution based on respect for hierarchy. http://ijaers.com/detail/predominant-leadership-style-in-the-1st-military-police-battalion-in-the-state-of-rond-nia-brazil/ Alexsandro Antonio Lang, Ariadne dos Santos Massaro, Jose Arilson de Souza, Elder Gomes Ramos, Leonardo Severo da Luz Neto, Joelson Agostinho de Pontes, Lucicleia Barreto Queiroz, Carlos Alberto Paraguassú-Chaves http://ijaers.com/uploads/issue_files/33IJAERS-08202122-Predominant.pdf The objective of this paper is to analyse the possibility of an intercultural dialogue in Natural Sciences teaching; the study is centered in David Ausubel’s Meaningful Learning Theory and geared to indigenous students. It highlights the concepts that guide the meaningful learning concomitantly to the conceptual pillars of interculturality, treasuring the indigenous knowledge during the entire journey, and also, the premise that Maths and Sciences teaching must take place out of necessity and/or concrete situations. This study points the great didactic conceptual advantage of the utilization of the ethnophysics knowledge to represent and model the main concepts of Natural Sciences, it yet discourses about local conceptions and the pedagogical practices of teachers; the elaboration of an alternative school material contextualized with the indigenous reality, and the comprehension of the process that was fundamental to a meaningful answer of the indigenous students concerning Mathematics and Natural Sciences teaching. Reflections were proposed to enable the Teaching of Mathematics and Natural Sciences from an intercultural perspective, as it brings the possibility of analysis, aiming at the decolonization of knowledge and, therefore, the imagery that supports it. http://ijaers.com/detail/interculturality-and-meaningful-learning-indigenous-schooling-education-in-natural-sciences-teaching/ Leonardo Diego Lins, Maíra Cavalcanti Coelho, Karina Amorim Moreira M. Lourenço, Sandra Valéria Silva Lins http://ijaers.com/uploads/issue_files/34IJAERS-07202174-Interculturality.pdf Realization of the thermoelectric effects within finite element analysis (FEA) by means of the COMSOL-Multiphysics platform is offered. It lets thermoelectric calculations among temperature dependent material traits on random geometries. Further, the calculations can be pooled with structural analysis plus convection can also be taken in report. Thermoelectric cooler employs Peltier effect for dissipating heat in an electronic casing structure. It shows exceptional rewards over conservative cooling skill via quiet process, extended life span, and effortless integration. Nevertheless, Joule heating results in the accumulation of internal heat thereby exposes thermoelectric cooler towards the risk of thermo-mechanical breakdown all through continuous operations in pragmatic thermal surroundings. In this paper, a 3D module of thermoelectric material MoSi2 is designed on the way to examine the thermoelectric effect of the material taking into consideration the temperature reliant TE material traits. The transient behavior is also observed. The results can be openly used intended for consistent design considerations and optimized thermoelectric devices in engineering. http://ijaers.com/detail/thermoelectric-effects-on-mosi2-with-finite-element-analysis-using-comsol/ Sarabjeet Singh, Yogesh Chandra Sharma http://ijaers.com/uploads/issue_files/35IJAERS-0820217-Thermoelectric.pdf Considering the responsibilities within the scope of environmental causes more precisely and in a local way, the study presents a discussion on the municipal environmental licensing process, regarding the Shared Environmental Management - GAC in the State of Bahia and the municipalities that make up the Northern Piemonte Identity Territory of Itapicuru. The research is a case study of a qualitative character applied in the municipal environment secretariats, with an exploratory character, in order to identify the quality of the environmental management used, as well as the main obstacles found in the licensing processes. Therefore, the GAC strengthened the public environmental management of the analyzed municipalities, with positive impacts for the proper treatment of their natural resources and physical environment, guiding its actions in administrative decentralization processes. In addition to creating the bases for the municipalities to form their Environmental Management System. Deficits in the continuity of actions developed by municipal managers were observed. This management decentralization process served to encourage and enable the population's participation in the environmental management of their municipality. http://ijaers.com/detail/municipalization-of-environmental-licensing-an-analysis-of-the-identity-territory-of-piemonte-norte-do-itapicuru-bahia/ Thaíse Loiola de Sá, Gina Gouveira Pires de Castro http://ijaers.com/uploads/issue_files/36IJAERS-08202127-Municipalization.pdf The marketing uncertainties have caused in numerous changes in the people management area. Understanding such moment, the present work, searched investigate issues about talent retention, objecting to describe the perception of the administration students in terms of talent retention currently adopted by companies. The formulated hypotheses were: H1) The factors considered as more valuable by students are not related to financial rewards; H2) The practices of talent retention adopted by companies influence the choice of the students that remain in them. H3) The students realizes that the companies don’t invest in talent retention, because is not their priority. The nature of the study is descriptive-explorative with quantitative approach. The data were obtained by primary and secondary sources, raised by field research and bibliography research, respectively. The population investigated was constituted by 364 matriculated students in 2019/2, in the Administration course of the Universidade Federal Fluminense (UFF), in the city of Macaé/RJ. The research results show that the most valued tools by the university students are related to the training and development programs. With the study limitations stand out the size of the sample, presented in limited and reduced number to the university students of the above course. http://ijaers.com/detail/talent-retention-practices-by-the-view-of-the-administration-university-students-at-universidade-federal-fluminense-uff-in-maca-rj/ Fabio do Nascimento Siqueira da Silva, Michael da Silva Alencar, Nelson Hein http://ijaers.com/uploads/issue_files/37IJAERS-08202123-Talentretention.pdf The aim of this paper is to identify the socio biodiversity practices that take place in the Pitaguary community and how these cultural practices reflects in the sustainability of their space. Socio biodiversity and sustainability are two concepts which belong to the life of indigenous people. They are fundamental to an ecological balanced environment and to the quality of life of human beings. The relationship established with nature combined with the traditional knowledge in the natural resources management to produce many items of the biodiversity make these people real natural universe specialists. The indigenous people possess an immeasurable cultural legacy in regard of the biodiversity and sustainability. The natural resources extraction and the harmonic relationship established with the nature elements are undoubtedly unique and it results in sustainability. It was carried out an ethnography study investigating the ancestral traditional practices of socio biodiversity and sustainability in the Pitaguary ethnicity known as “Santo Antônio do Pitaguary”. The community is located closest to the Santo Antônio dam in the Maracanaú city, Fortaleza metropolitan region in the Ceará State, Brazil. The method consisted of an exploratory-descriptive study with a qualitative approach and the use of interviews and direct observation as techniques. The results highlight that the ancestral culture and memory are present in the socio biodiversity practices of the Pitaguary community. Moreover, they reveal the importance of the traditional knowledge in the biodiversity preservation for sustainability. http://ijaers.com/detail/the-pitaguary-ethnicity-sociobiodiversity-and-sustainability-practices-in-maracana-cear-brazil/ Antônio Roberto Xavier, Bárbara Eleodora Santiago Gomes, Andréa Yumi Sugishita Kanikadan, Rosalina Semedo de Andrade Tavares, José Gerardo Vasconcelos http://ijaers.com/uploads/issue_files/38IJAERS-08202116-ThePitaguary.pdf This paper is targeted on the improvement of the Nigeria 330kV 44Bus network voltage stability using ANN based adaptive STATCOM. The three-phase version of the test network was modelled in MATLAB-SIMULINK for simulations. Using the data obtained from the Transmission Company of Nigeria (TCN), Oshogbo and simulation data; ANN based adaptive STATCOM was developed, trained and deployed to the Test network for compensation of the weak section of the network. Results and analysis of simulations shows that the test network is unstable as the modal analysis revealed the presence of eigenvalue with a negative real part. Yola bus was discovered to be the most vulnerable bus with the highest participating factor and a voltage profile (of 0.83pu) less than acceptable lower limit of 0.95pu. The connection of ANN based adaptive STATCOM improved the stability of the network by enhancing the voltage profile of the network’s weakest bus by 22.9%. It was concluded that ANN based adaptive STATCOM was effective in improving the stability of the Nigeria three phase transmission grid network. http://ijaers.com/detail/improving-the-voltage-stability-of-the-nigeria-44-bus-330kv-power-transmission-network-using-ann-based-adaptive-statcom-device/ E.N. Aneke, E.N.C Okafor, Iyidobi J.C http://ijaers.com/uploads/issue_files/39IJAERS-07202047-Improving.pdf In this study, the dispersion equation was formulated with the same procedure as the linear wave theory dispersion equation formulation procedure, but in this study, the total velocity potential was used. The dispersion equation obtained has the same form as the linear wave theory dispersion equation. There is a difference in its coefficients which causes the obtained wavelength to be half of the wavelength dispersion equation of the linear wave theory. http://ijaers.com/detail/sinusoidal-water-wave-dispersion-equation-formulated-using-the-total-velocity-potential-equation/ Syawaluddin Hutahaean http://ijaers.com/uploads/issue_files/40IJAERS-08202135-Sinusoidal.pdf The manufacturing industry operates in a constantly changing environment, whether internal or external. Revolutionary shifts in demand and technology are becoming more common. As a result, organizations must be prepared to absorb or mitigate the impact that these changes may have on their outcome, thereby becoming resilient. The aim of this study is to identify which skills and competencies manufacturing companies must develop to become resilient and resist these sudden changes. In order to achieve the proposed goal, this article conducts a systematic literature review. Two databases, Science Direct and SpringerLink, were searched, as well as articles published at the Resilience Engineering Symposium between 2015 and 2020, using the search term "resilience engineering in manufacturing." A total of 64 relevant articles were obtained. The analysis of the articles yielded 23 skills and competencies that companies use to be resilient, with organizational flexibility being the most mentioned skill. As a result, these skills were classified using the four theoretical skill profiles for a resilient system (monitor, anticipate, respond, and learn). There was practically a balance between the four skills mentioned by the authors in the articles, with a higher tendency for the ability to respond to variability, interruptions, disturbances, and opportunities presented in a manufacturing system. http://ijaers.com/detail/skills-and-competencies-for-resilience-in-manufacturing-systems-a-systematic-literature-review/ Lucas de Carvalho Borella, Margareth Rodrigues de Carvalho Borella http://ijaers.com/uploads/issue_files/41IJAERS-08202143-Skillsand.pdf The writing in question was built from the TCC - Course Conclusion Paper by one of the authors, entitled “The prophet and the politician: an analysis based on Antônio Conselheiro and Arraial de Canudos”. Therefore, we intend to use the fragments of the work in question to reorganize the analysis that proposed to put in dialogue the ideas of Antônio Conselheiro, the prophet, with the materiality of the praxis achieved with the Arraial de Belo Monte, Canudos. In relation to the latter, we think of the environment from the concept of communitas proposed by the English anthropologist Victor Turner (1969), contextualizing from Canudos, a “communitarian society” created in the Brazilian hinterland. With this perspective, we will reflect on Canudos as a place where it is possible to glimpse traces of a sertanejo prophetism. Thus, thinking about how that 'main prophet' was able, from his place of speech, to lead and seduce those people to faithfully follow their spiritual advice, defending his ideals of an anti-structure society, not refraining from even taking up arms to face the military forces of the Republic structure; we will consider, therefore, about the resistance of Canudos as a practical result of the socio-political-religious discourse of that prophet. http://ijaers.com/detail/ant-nio-conselheiro-and-the-arraial-de-canudos-a-socio-anthropological-analysis/ Ronaldo Bitencourt de Oliveira, Kleyton Gualter de Oliveira Silva, Guilherme Ernesto de Andrade Neto, Cleiton Lin Oliveira da Silva, Enos André de Farias, Reginaldo Bitencourt de Oliveira, José Inaldo Valões http://ijaers.com/uploads/issue_files/42IJAERS-08202136-Ant.pdf Non-melanoma skin cancer is the most frequently diagnosed cancer in humans. The process of cutaneous carcinogenesis is not fully understood. However, several studies have been carried out to better explain the mechanisms that lead to malignancy. Methods: We tested in vitro the neutralization of non-melamoma carcinoma cell replication with botulinum toxin. Results: There was no significance in cell inhibition. Conclusion: Although our results have not been promising, further research with botulinum toxin should be encouraged to provide additional data on its effects on skin lesions, as with current evidence it is possible to correctly plan clinical trials aimed at testing its action on the skin. non-melanoma skin cancer http://ijaers.com/detail/study-of-the-neutralization-of-cell-multiplication-in-vitro-with-botulinum-neurotoxin-type-a/ Adriana Novaes Rodrigues, Andressa Duarte http://ijaers.com/uploads/issue_files/43IJAERS-08202133-Studyof.pdf This paper aims to identify the main characteristics indicative of advances in the solidarity economy via cooperation as an alternative for local sustainable development, namely: Novas Vidas community, located in Ocara, Ceará, Brazil. Indeed, economic difficulties in the context of capitalist society directly impact the strategies for strengthening cooperativism. It is possible to see the importance of the discussion of cooperativism in the perspective of strengthening local development and environmental sustainability. In this sense, for the production of this study, the methodological paths of qualitative research were followed, aiming to understand how farmers develop the Solidarity Economy through productive yards in the community with a view to sustainability. Regarding data collection techniques, on-site observation and non-directive interview were used. Regarding the analysis techniques, discourse analysis was applied. As a succinct conclusion, it became clear that the possibility of sustainable development depends on strategic actions or focal public policies. http://ijaers.com/detail/productive-backyards-solidarity-economy-and-sustainable-development-in-the-community-of-novas-vidas-cear-brazil/ Alexandre Oliveira Lima, Francisco Antonio de Sousa Rodrigues, Meiriane da Silva Pinheiro, Antônio Roberto Xavier, Marcelo de Oliveira Sindeaux, José Cleilson de Paiva dos Santos, Maria do Rosário de Fátima Portela Cysne, José Rogério Santana http://ijaers.com/uploads/issue_files/44IJAERS-08202120-Productive.pdf Tensile testing is a primary material science test in which a sample is tension-proof until it is failure. Test results are frequently used to select an application material, to verify quality and to forecast how the material reacts with other forces. The features assessed directly by a tensile test include maximum tensile strength, maximum length and a reduction of the area. From these measures the following characteristics can also be determined: Young modulus, the ratio of Poisson, yield strength and stress resistance. Testing machine is used for the development and maintenance of better information on known materials or the development of new materials. There are many test machines, but the most common of these is the one that tests tensions, compression and bending of the materials. For the test specimen to be tested, the engine must have the proper characteristics. Three major parameters exist: strength, speed, accuracy and precision. The test machine is mainly used in the creation of the stress line diagram. The computer algorithm may be applied to compute the yield strength, tensile force, youth module or total elongation once the diagram has been generated. The author has designed & fabricated a model for demonstration of the techniques employed using viper motor (DC motor) for force exertion, load cell & instrumentation amplifier of reading force, ultrasonic distance sensor for measurement of displacement. Simultaneously a tripod mounted webcam is employed to capture real time video & image processing & employed to compute displacement on the basis of motor movement. http://ijaers.com/detail/design-development-of-a-computer-controlled-tensile-strength-testing-machine-for-testing-of-strings-fabrics/ Ravi Babu Sharma, Jitendra Kumar Rai http://ijaers.com/uploads/issue_files/45IJAERS-08202112-Design.pdf This paper aims to present the cultural practices experienced in the Lagoa das Melancias Quilombola community, located in Ocara, Ceará, Brazil. The focus is to emphasize the cultural practices of the community residents considering the sustainability and the identity recognition as quilombolas remaining group. It is an exploratory study with a qualitative approach and the method chosen is the ethnography case study. The data collection consisted of direct observation, conversation circles, field/notes diary, on-line and face-to-face interviews, through electronic resources such as whatsapp and pictorial resources. The data analysis techniques were composed by the content interpretation and narrative speech. As a conclusion, it is possible to attest that the community residents' identity profile reflects their history and ancestral memory which can be found in nowadays cultural practices in the subsistence agriculture, in women's handcrafted practices, in the medicinal plants cultivated, in the capoeira circles and in the wearing of rastafari hair. http://ijaers.com/detail/sustainable-cultural-afro-brazilian-practices-in-the-melancias-quilombola-community-in-ocara-cear-brazil/ Carlos Mendes Tavares, Meiriane da Silva Pinheiro, Antônio Roberto Xavier, Andrea Yumi Sugishita Kanikadan, José Gerardo Vasconcelos http://ijaers.com/uploads/issue_files/46IJAERS-08202117-Sustainable.pdf Digital Information and Communication Technologies enable dialogues with youth about mental health and the overuse of digital games available in cyberspace. Thus, this study sought to understand the knowledge and sayings of youth about the use of digital games on the Internet and how their excess affects their mental health. We opted for a qualitative approach, exploratory-descriptive type, carried out in the cyberspace of The Web Radio AJIR, contemplating the communication content of the Program In Tune With Health - S@S in connection with the youth of public schools in the state of Ceará, Brazil. The participants were 85 young schoolchildren. The main knowledge and sayings of youths form, addictions in digital games, time limit on social networks, consequences of the abusive use of digital games, games and influences for violence, excessive games and elevation of anxiety and mental disorders, leading to depression and guidance to help people dependent on the use of social networks. Thus, the dialogues produced on the radio web were promoters of education for health care with school youths on the prevention of violence, digital dependence and what are the practices considered appropriate for the use of video games on the Internet. http://ijaers.com/detail/youth-speeches-mediated-on-the-web-radio-about-digital-games-and-mental-health/ Karlla da Conceição Bezerra Brito Veras, Raimundo Augusto Martins Torres, Edine Dias Pimentel Gomes, Breno da Silva Albano, Josenice Vasconcelos Martins http://ijaers.com/uploads/issue_files/47IJAERS-08202145-YouthSpeeches.pdf This article analyzes the panorama of fashion design innovation in Bra-zil and how orthodox Intellectual Property institutes are used to protect these innovations. A systematic review of fashion law was also carried out to conclude whether existing protection is sufficient or specific regu-lation is needed. Examples of patent, utility models and industrial design were analyzed in a critical manner in order to conclude if the protection of fashion designs can be carried out through such institutes. Finally, a detailed analysis of the results of a national publicly held company in the field was carried out to assess the relevance of using intellectual proper-ty institutes to protect their own designs. It is concluded that patents, in-dustrial designs and utility models are underused, leaving the possibility of protection solely through copyright. http://ijaers.com/detail/panorama-of-the-use-of-intangible-assets-and-innovation-in-brazilian-fashion-companies/ Caio Martins Nazareth Machado http://ijaers.com/uploads/issue_files/48IJAERS-08202151-Panorama.pdf The cultivation of green corn has been increasingly important for small farmers, due to its economic and social importance, derived from consumption in natura in the form of green ears. Thus, the present work was carried out to study the behavior of corn cultivars, in the presence and absence of the bacterium Azospirillum brasilense, under different nitrogen doses, aiming at the productivity of green ears in cultivation under low latitude. Two trials were installed, one in the agricultural year 2019/20 and the other in the agricultural year 2020/21, in the central region of the State of Tocantins. The experimental design used in each assay was randomized blocks, with three replications. The treatments were arranged in subdivided plots, where treatments involving seed inoculation with the bacterium were allocated in the plots Azospirillum (C Az) and without inoculation of seeds (S Az), in the subplots five doses of nitrogen (00, 30, 60, 90 and 120 kg ha-1 N) and in the subplots eight maize cultivars. For each process (C Az and S Az), an adaptability and stability study were carried out using the Eberhart & Russell (1966) and environmental stratification by the method of Lin (1982), where the combination of each dose of N, in each assay and in each process (C Az e S Az) represented a distinct environment. There was a differential response of the cultivars between the processes with and without seed inoculation. Seed inoculation resulted in a higher increase in the productivity of green ears. Or BRS-3046 and AG-1051 adapted to the environments. http://ijaers.com/detail/cultivar-x-environment-interaction-on-green-ear-yield-in-corn-inoculated-with-azospirillum-brasilense-at-low-latitude/ Vanderlan Carneiro Dias, Joênes Mucci Peluzio, Maria Dilma de Lima, Guilherme Benko, Alessandra Maria de Lima Naoe, Evandro Reina, Weder Ferreira dos Santos, Layanni Ferreira Sodré Santos, Flávio Sérgio Afférri, Wânia Maria Dias Carneiro http://ijaers.com/uploads/issue_files/49IJAERS-08202141-Cultivar.pdf The reduction of waste in manufacturing processes and the productivity gain have been researched by several authors as economic competitive advantages for companies. More recently, environmental and social concerns have also been included in these studies. In this broad context, which additionally involves economic, environmental and social aspects, are the cooperatives of waste pickers (CMRs), which need to be placed on the same level where companies with productive and competitive profiles are located. Thus, the research presented in this article seeks to contribute to the advancement of this debate, considering the existence of gaps in the literature that address productivity studies in the production activities of recyclable materials sorting cooperatives. Therefore, the objectives of this study are directed to the questions that involve productivity (kg/cooperated) in the operation of screening materials, measuring the waste that occurs and which proposals for improvements can be implemented to increase productivity. This research is limited to a cooperative of collectors that adopts the sorting belt in its process. The methodology adopted is a case study, of applied nature (generating knowledge with practical application), quantitative and with exploratory data analysis. The results show that there are losses of production/waste of time of the (co-operated) operators, which could be reversed in aggregated value and, consequently, in increased productivity of the cooperative’s business system in the sorting operation. http://ijaers.com/detail/productivity-analysis-in-recyclable-materials-sorting-operation-a-case-study-at-recifavela-cooperative/ Luís Henrique Rodrigues, Ricardo Reolon Jorge, Kevin Laita Kumamoto http://ijaers.com/uploads/issue_files/50IJAERS-08202146-Productivity.pdf Objective: to analyze the relationship between health literacy and adherence to treatment of dialysis patients. Method: cross-sectional study with 424 end-stage renal disease patients on conventional HD in the West and Middle West of Santa Catarina. The SALPHA questionnaire was used to analyze health literacy and the Brief Medication Questionnaire was used for treatment adherence. Minimental was used to analyze cognition. Results: the mean age was 57.3±15.8 years, 53.3% men, 71.4% with low education level, 10.1% have had a kidney transplant, 5.0% reported having already taken an extra dose of medication, 4.0% said they had missed doses and 22.6% admitted failure of days or prescribed doses. Literacy was inadequate for 67%, 49.1% were considered to have cognitive impairment, 55.2% are adhered to treatment. Low adherence to treatment was related to inadequate literacy (p http://ijaers.com/detail/health-literacy-and-relation-to-adherence-to-pharmacologic-treatment-of-patients-in-hemodialysis/ Dayani Barbosa dos Santos, Carina Rossoni, Fabiana Meneghetti Dallacosta http://ijaers.com/uploads/issue_files/51IJAERS-08202148-HealthLiteracy.pdf Gait is a behavioural biometric that does not require the subject’s collaboration as it can be captured at a distance. The Gait-based age estimation has extensive applications in surveillance, customer age estimation in shopping centres and malls for business intelligence purposes and age-constrained access control to places like liquor shops, etc. In this paper, we propose Gait-Net, a LeNet-50 inspired age classification Convolutional Neural Network (CNN) for Gait-based age estimation. We propose the application of a heat map filter on each Gait Energy Image (GEI), for the enhancement of age differentiating features in the GEI, subsequently followed by the sequential age group and age estimation CNN models. We addressed the inherent class imbalance problem induced by the non-availability of sufficient data for the elderly subjects, by using the image augmentation technique. We evaluated our model on the OU-ISIR Large Population Gait Database and the results confirmed its efficiency. http://ijaers.com/detail/gait-based-age-estimation-using-lenet-50-inspired-gait-net/ Tawqeer ul Islam, Lalit Kumar Awasthi, Urvashi Garg http://ijaers.com/uploads/issue_files/52IJAERS-08202132-Gaitbased.pdf In this work, objective issues stand out, such as the survey of the number of contracts granted for the agricultural activity in the years 2000 and 2010, classified as "costing" and "investment", and the survey of the volume of financial resources released for agricultural activity in 2000 and 2010, classified as “costing” and “investment” for the municipalities in the micro-region of Vilhena.Based on the institutional incentive of the Brazilian rural development policy (rural credit), granted to the agricultural sector, through financial availability, it was defined as a general objective to analyze the situation of the municipalities in the microregion of Vilhena, State of Rondônia, in order to identify the possible livestock development process. This is an applied, descriptive, cross-sectional research with a quantitative approach. Based on the data analyzed and based on the concept that the cost is linked to the maintenance of what already exists and the investment is expansion, it can be said that there were, in general, investments aimed at strengthening the livestock activity in the microregion, proving the hypothesis of the development of livestock in the microregion of Vilhena. http://ijaers.com/detail/performance-of-rural-credit-in-the-municipalities-of-rond-nia-brazilian-amazon/ Carlos Alberto Paraguassú-Chaves, Fabio Robson Casara Cavalcante, Raimunda Lirineide de Brito, Carla Dolezel Trindade, Simão Aznar Filho, Ana Maria Moraes da Fonseca Cavancante, Fabrício Moraes de Almeida, Simão Dolezel Aznar, Levi Pereira Granja de Souza, Ricardo Guanabar, Carlos Eugenio Pereira http://ijaers.com/uploads/issue_files/53IJAERS-08202156-Performance.pdf The purpose of this study was to determine the level of student activity and student learning outcomes in active learning by experimenting with whole numbers in fifth grade elementary school. The subjects in the study were fifth grade students of SD N 173189 Sosorpahu Kec. Sipahutar Taput for the academic year 2020/2021, while the objects of research were student activities and student learning outcomes as a result of active learning by experimenting with whole numbers. This type of research is descriptive research which aims to describe how student activities and learning outcomes achieved by students in active learning. by experimenting with whole numbers. The instruments used in this study were student activity observation sheets and student learning outcomes tests in the form of descriptions. The data taken are student activity data obtained from observations made by two observers, and student learning outcomes obtained from learning outcomes tests. From the analysis of the research data, it was found that: The level of student activity in the first learning was 75.71 (active) with an average level of student activity reliability of 82.62% (high), and the level of student activity in the second learning was 88.62 (active). with the average level of student activity reliability of 84.61% (high); Active learning with experiments on whole numbers in class V SD N 173189 Sosorpahu Kec. Sipahutar Taput Academic Year 2020/2021, the achievements have been completed with the following details: (a) The level of classical student mastery is 77.02% classified as moderate, (b) ) The absorption of individual students was obtained by 31 people from 29 students or 93.55% of many subjects had completed learning, meaning classically had been completed, (c) The achievement of specific learning objectives was completely achieved. http://ijaers.com/detail/active-learning-with-experiment-whole-numbers-in-fifth-grade-of-elementary-school/ Taruly Tampubolon, Robet Harianja, Holmes Rajagukguk http://ijaers.com/uploads/issue_files/54IJAERS-08202115-ActiveLearning.pdf This article presents a proposal to combine the development of brands with the knowledge of the legal requirements for their protection, with a view to bringing this knowledge closer to designers so that they can develop brans that can be registered and legally protected. An almost nonexistent or very punctual practice has been the discussion of such content for designers in training. With the lack of knowledge of such requirements, it is very common for conceived brands to consolidate themselves in the market gaining intangible value, but that they can be prevented from legal protection by not meeting one or more of the requirements of legal protection. Despite being a knowledge coming from another area of knowledge, it is necessary to approach in a way to guide as to the requirements and inform the designer of the limitations so that the designer can develop more efficient visual identities, subject to protection. The research was applied, qualitative, exploratory with bibliographic and documentary procedures. A research protocol was defined based on Silva & Menezes (2011). As a result, the guidelines based on the Industrial Property Law are presented, highlighting 7 impediments to registration and guidance on the search for precedence to avoid collisions of brands and impediment of registration. http://ijaers.com/detail/applied-study-on-visual-identity-configuration-allied-to-intellectual-property-protection-in-pernambuco-guidelines-for-designers/ Camila Brito de Vasconcelos, Danielle Silva Simões-Borgiani, Pedro Henrique Sobral de Souza Azevedo Mayrinck, Cintia Raquel Ferreira de Amorim http://ijaers.com/uploads/issue_files/55IJAERS-08202149-Applied.pdf The filling of the root canal system has a fundamental role in endodontic treatment, since it will take the place of the root pulp, thus the material must act by isolating the root canal system, preventing the penetration of microorganisms and their toxic by-products, which can compromise the prognosis of the procedure. The present study was carried out to evaluate the apical microleakage of a hydroxyapatite modified sealer. After removal of crowns and endodontic instrumentation, 40 selected maxillary single root teeth were randomly divided into two experimental groups (n = 15 each) according to the sealer: GENDO – Endomethasone Sealer / GENDOHX - Endomethasone Sealer +5% hydroxyapatite, and two control groups (n = 5 each). The root canals of specimens from the experimental group were filled with the cold lateral condensation technique. To assess apical microleakage, the apical linear dye penetration was measured microscopically from apex to most coronal part and data were statistically analyzed. Descriptive analyses were performed, followed by the Mann- Whitney test. The mean values of leakage observed in the groups were GENDO – 0,95± 1,80 and GENDOHX – 1,01± 1,82. No significant differences were found between experimental groups (p>0,05). Conclusion: The addition of hydroxyapatite to the endomethasone sealer did not interfere with its apical sealing capacity. http://ijaers.com/detail/apical-microleakage-evaluation-of-a-new-proposal-for-endodontic-sealer-associated-with-hydroxyapatite-an-ex-vivo-study/ Carlos Eduardo Fontana, Beatriz Anjos do Santos, Mariana Xavier Pilla, Letícia Fernandes Sobreira Parreira, Sérgio Luiz Pinheiro http://ijaers.com/uploads/issue_files/56IJAERS-08202154-Apical.pdf Goal: To observe pharmacological and toxicological studies of Abarema cochliacarpos (GOMES) Barneby & J.W. Grimes which indicate efficacy and safety in its use as an herbal medicine. Method: Systematic review study in the BVS, PubMed and SciELO databases. The descriptors “Abarema”, “cochliacarpos”, “pharmacological”, and “toxicological” and Boolean operator “AND” were used. Inclusion criteria: Abarema cochliacarpos (GOMES) Barneby & J.W. Grimes; pharmacological action; toxicological action. Exclusion criteria: review study and duplicated articles. The studies were analyzed regarding the in vivo characteristics (mice and rats) or in vitro (cell and bacterial lines), pharmacological or toxicological action, derived from plant drug/part of plant and authorship. Results: 11 articles selected in the review pointed out: analgesic activity tested in Swiss mice; antibacterial in lineages such as Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa; anti-inflammatory tested in Wistar Rats and Swiss mice; antioxidant in vitro model on oxidative damage and also in a Swiss mouse model; antiulcerogenic analyzed in Wistar rats; myoprotective in Swiss mice; estrogenic and thyroid modulation tested in cell lineage. The toxicological essay found approached the hepatotoxicity induced by A. cochliacarpos in Mus musculus mice. Conclusion: A. cochliacarpos has phytoactive constituents with analgesic action, antibacterial, myoprotective, anti-inflammatory, antioxidant, antiulcerogenic, estrogenic and thyroid modulation in animal models in vivo and in vitro, with the bark being the most used part in extracts and fractions. Faced with the need for proof of safety in the use of plants as herbal medicines, toxicological tests have to get conducted to ensure the safe use of the species, as correlated with the barbatimão. http://ijaers.com/detail/pharmacological-and-toxicological-aspects-of-barbatim-o-abarema-cochliacarpos-gomes-barneby-j-w-grimes/ Lilia Silva Santos, Carolina Santos Andrade, Carlas Thays Lima da Silva, Romário Alves Santana, Julita Maria Pereira Borges http://ijaers.com/uploads/issue_files/57IJAERS-08202150-Pharmacological.pdf This article examined, through Social Network Analysis (SNA) techniques, the personal profiles of theHeads of Government of countries in South and North America and how they communicated withtheir audiences on institutional measures to contain COVID-19. Analyses were carried out on data collected from Twitter from November 2019 to November 2020. This study includes: i) quantitative analysis, measuring categories and emphases in the communication of tweets, retweets, likes, and comments on matters relevant to the pandemic; ii) qualitative analysis that allowed evaluating speeches to identify political interference and the effectiveness of communication at critical moments of the pandemic. It was possible to infer that each president has his singularities and understanding about Social Media’s use as a more direct communication tool with his audience. It was also found that successful communication is not directly proportional to the volume of messages on Twitter, but to socio-political aspects and institutional leadership that can make a difference in Social Media in combating COVID-19. http://ijaers.com/detail/social-and-institutional-presence-of-the-presidents-of-the-americas-on-social-media-an-analysis-of-the-communication-on-twitter-about-covid-19/ Lucas Dejard, Adriano Madureira dos Santos, Harold Dias de Mello Junior, Rita de Cássia Romeiro Paulino, Karla Figueiredo, Fernando Augusto Ribeiro Costa, Douglas Almeida Vidal, Yomara Pinheiro Pires, Marcos César da Rocha Seruffo http://ijaers.com/uploads/issue_files/58IJAERS-08202137-Social.pdf In this study we investigate a model of generalized Pell numbers. Combinatorial representations are provided and some new identities and combinatorial identities are established. Moreover, analytic results are exhibited, where some special cases are discussed. Illustrative examples and applications are given. http://ijaers.com/detail/on-a-model-of-generalized-pell-numbers/ I. M. Craveiro, E. V. Pereira Spreafico, M. Rachidi http://ijaers.com/uploads/issue_files/59IJAERS-08202147.pdf