bluuebunny/crossref_metadata_2025 huggingface dataset:
The socio-economic and health effects of COVID-19 among rural and urban-slum dwellers in Ghana: A mixed methods approach
Authors: Aberese-Ako Matilda , Immurana Mustapha , Dalaba Maxwell Ayindenaba , Anumu Fidelis E. Y. , Ofosu Anthony , Gyapong Margaret
Published: July 2022

Background

Vulnerable populations such as rural and urban-slum dwellers are more likely to suffer greatly from the deleterious effects of the novel Coronavirus disease 2019 (COVID-19). However, in Ghana, most COVID-19 mitigating packages are not focused on vulnerable populations.

Methods

Concurrent mixed methods design was used to examine the socio-economic and health effects of COVID-19 among rural and urban-slum dwellers in Ghana. Four hundred respondents were sampled for the quantitative arm of the study, while 46 In-depth Interviews (IDIs) were conducted with community members and government officials. Sixty-four community members participated in Focus Group Discussions (FGDs) and non-participant observation was carried out for three months. Quantitative data were analysed using frequencies, percentages, Pearson Chi2 and ordered logistic regression. Interviews were recorded using digital recorders and later transcribed. Transcribed data (IDIs, FGDs) and observation notes were uploaded onto a computer and transferred to qualitative software NVivo 12 to support thematic coding and analysis.

Results

Majority of the respondents confirmed the deleterious socio-economic and health effects of COVID-19 on jobs and prices of food. Other effects were fear of visiting a health facility even when unwell, depression and anxiety. Young people (18–32 years), males, urban-slum dwellers, married individuals, the employed and low-income earners (those who earn GHC10/$1.7 to GHC100/ $17), were more likely to suffer from the socio-economic and health effects of COVID-19. Urban-slum dwellers coped by relying on family and social networks for food and other basic necessities, while rural dwellers created locally appropriate washing aids to facilitate hand washing in the rural communities.

Conclusion

COVID-19 and the government’s mitigation measures had negative socio-economic and health effects on vulnerable communities. While vulnerable populations should be targeted for the government’s COVID-19 mitigating packages, special attention should be given to young people (18–32 years), males, urban-slum dwellers, married individuals and low-income earners. Communities should be encouraged to maintain coping strategies adopted even after COVID-19.
Left atrial remodeling in mitral regurgitation: A combined experimental-computational study
Authors: Bouwmeester Sjoerd , van Loon Tim , Ploeg Meike , Mast Thomas P. , Verzaal Nienke J. , van Middendorp Lars B. , Strik Marc , van Nieuwenhoven Frans A. , Dekker Lukas R. , Prinzen Frits W. , Lumens Joost , Houthuizen Patrick
Published: July 2022

Aims

Progressive changes to left atrial (LA) structure and function following mitral regurgitation (MR) remain incompletely understood. This study aimed to demonstrate potential underlying mechanisms using experimental canine models and computer simulations.

Methods

A canine model of MR was created by cauterization of mitral chordae followed by radiofrequency ablation-induced left bundle-branch block (LBBB) after 4 weeks (MR-LBBB group). Animals with LBBB alone served as control. Echocardiography was performed at baseline, acutely after MR induction, and at 4 and 20 weeks, and correlated with histology and computer simulations.

Results

Acute MR augmented LA reservoir and contractile strain (40±4 to 53±6% and -11±5 to -22±9% respectively, p<0.05). LA fractional area change increased significantly (47±4 to 56±4%, p<0.05) while LA end-systolic area remained unchanged (7.2±1.1 versus 7.9±1.1 cm2 respectively, p = 0.08). LA strain ‘pseudonormalized’ after 4 weeks and decompensated at 20 weeks with both strains decreasing to 25±6% and -3±2% respectively (p<0.05) together with a progressive increase in LA end-systolic area (7.2±1.1 to 14.0±6.3 cm2, p<0.05). In the LBBB-group, LA remodeling was less pronounced. Histology showed a trend towards increased interstitial fibrosis in the LA of the MR-LBBB group. Computer simulations indicated that the progressive changes in LA structure and function are a combination of progressive eccentric remodeling and fibrosis.

Conclusion

MR augmented LA strain acutely to supranormal values without significant LA dilation. However, over time, LA strain gradually decreases (pseudornormal and decompensated) with LA dilation. Histology and computer simulations indicated a correlation to a varying degree of LA eccentric remodeling and fibrosis.
Attitudes towards cardiopulmonary resuscitation situations and associations with potential influencing factors—A survey among in-hospital healthcare professionals
Authors: Silverplats Jennie , Strömsöe Anneli , Äng Björn , Södersved Källestedt Marie-Louise
Published: July 2022

Introduction

Attitudes towards cardiopulmonary resuscitation (CPR) among in-hospital healthcare professionals (HCPs) are poorly understood. The aim of this study was to evaluate attitudes towards CPR situations among in-hospital HCPs and assess associations with potential influencing factors.

Materials and methods

A questionnaire was distributed to 3,085 HCPs in 2009 and 2,970 HCPs in 2015–2016. The associations of influencing factors were analyzed using binary logistic regression.

Results

In the event of a possible cardiac arrest situation, 61% of the HCPs would feel confident in their CPR knowledge, 86% would know what to do, and 60% would be able to take command if necessary. In the latest real-life CPR situation, 30% had been worried about making mistakes or causing complications, 57% had been stressed, and 27% had been anxious. A short time since the latest real-life CPR performance and a high number of previous real-life CPR performances were associated with lower odds of worrying about making mistakes/causing complications, lower odds of feeling stressed or anxious, and higher odds of feeling calm. Regardless of previous real-life CPR experience, there were differences in attitudes between groups of professions, where physicians showed increased odds of worrying about making mistakes/causing complications and nurses showed increased odds of stress. Working on a non-monitored ward meant increased odds of stress and worrying about making mistakes/causing complications. Twelve months or more having passed since the latest CPR training course was associated with increased odds of anxiety.

Conclusions

Despite HCPs’ generally positive attitudes towards performing CPR in the event of a possible cardiac arrest situation, feelings of stress and anxiety were common in real-life CPR situations. Regular CPR training among all HCPs is a key factor to maintain competence and reduce anxiety. The possible effects of attitudes on performing CPR need to be studied further.
Stanley Kwan’s Center Stage: A feminist film in a postmodern frame
Authors: Ai Yiran
Published: July 2022

Chinese-language film studies have paid scant attention to the intersection of feminism and postmodernism. This article argues that Stanley Kwan’s Center Stage (1991), a film with a female protagonist and a postmodern narrative format, is demonstrably a feminist film. The parodic representation of protagonist Ruan Lingyu and the film’s scripted re-enactments of scenes from Hong Kong cinema are revealed as postmodern aesthetic processes, through which traditional gender norms can be explored and questioned. Finally, the article examines Kwan’s unique, self-reflexive narrative practice, which constructs an alternative female celebrity biopic and situates the film firmly as feminist historiographic metafiction.
A Usability Study on the Perception of Elderly Users Interacting with CAPTCHAs
Authors: Duarte Seabra Rodrigo , Prest Mattedi Adriana , Moraes de Melo Adriana
Published: July 2022

ABSTRACTTechnologies have advanced quickly over the years, making them increasingly diverse every day. Along with this technological advancement, the number of elderly people have grown exponentially in recent years and tend to increase even more. This part of the population is having a greater interest in using these new technologies due to the ease generated. For this reason, they must be accessible to users of all ages. This research aims to evaluate the perception when using the CAPTCHA security mechanism on websites, focusing on elderly users. The main results of the study were the preference for image CAPTCHAs, considering them easier than textual ones. It was found that, in addition to age, factors such as vision problems, education and average daily Internet use influenced the resolution of CAPTCHAs. In addition, the volunteers were observed to feel at ease when resolving this security mechanism.
Avaliação de Usabilidade do Aplicativo Be a Maker com Alunos de Licenciatura em Computação
Authors: Felipe Duarte Alves Luiz , De Oliveira Costa Junior Almir d , Anglada Rivera Jose
Published: July 2022

ABSTRACTThis work presents the results of the usability tests of the Be a Maker application, carried out by academics from the Degree in Computing course. Be a Maker is an application that aims to bring together several projects involving Educational Robotics (ER), allowing users (teacher or student) to share their practical experiences of using robotics inside or outside the classroom. Usability tests based on the SUS method were applied through an online questionnaire. In general, the data showed good results in usability tests, obtaining an average of 85 points in the SUS method, being classified as Excellent and Acceptable.
Tecnologias para Implementação de Laboratórios Remotos de Robótica: Revisão Sistemática da Literatura
Authors: Yoshio Maruyama Gustavo , Antônio de Castro Junior Amaury , Corrêa de Lima Anderson , Pinheiro Vilhanueva Marcos
Published: July 2022

ABSTRACTThis paper presents a systematic literature review based on studiesthat approach the development or use of existing technologies andtools for the implementation of remote robotics laboratories aimedat education.We sought to answer technical and motivational questionsthat provide information that collaborate for the developmentand implementation of remote robotics laboratories in educationalinstitutions. The aspects studied include: architecture, user interface,robotic platforms, cameras, programming languages types andmotivation. The results discussed here will be used as basis for aresearch development, aiming at the implementation of a remoteand experimental robotics laboratory at the Mato Grosso do SulFederal Institute of Education, Science and Technology.
Proposta e Avaliação de uma Ferramenta Web para Vocalização de Gráficos de Barras
Authors: Pacheco Pereira Wallace , Letícia Teles de Oliveira Cynthya , Pereira Mota Marcelle
Published: July 2022

ABSTRACTCharts are visual representations of numerical data to transmitinformation efficiently, facilitating understanding. However, thecharts present on the internet often do not have textual descriptionsthat screen reader programs can process. Alternatively, it isincomplete for understanding when this information exists and,consequently, excludes people, such as the visually impaired. Thisarticle presents a web tool that vocalizes the textual description ofsimple and grouped bar charts, using validated description models,one for each chart type. The evaluation verified the proposal’s feasibilityto help people understand the information in the chartsthrough speech synthesis. Tests were applied with participantswithout visual impairment and with visual impairment. The analysisof the collected data shows a positive evaluation of the usersabout using the tool.
Recomendações para Projeto de Jogo Digital Educacional para o Ensino Fundamental com Foco em Valores Ético-Morais
Authors: Nery Nascimento Michelle , Santos Diniz Renzo , Oliveira Macellani Sérgio , Rhaian Jandre Caroline , Vinicius Bento Martins Marcus , Loschi Ferreira Ronan , Da Consolação Machado Mônica , Carla Ribeiro Magna , Panasiewicz Roberlei , Ishitani Lucila
Published: July 2022

ABSTRACTPrevious research shows that the involvement of games as an educationalresource can generate good results, and some studiesdemonstrate the use of games as an auxiliary tool in learning respectfor rules, tasks, and values. However, the ethical-moral valuesapproach in learning is not a simple task, but some works demonstratethat games embody human values. In the literature, there aretheoretical studies on the use of games in education, but there is aneed for more practical assessments to verify the validity of existingconcepts. This research aims to propose recommendations for developingan educational game for children aged 10 to 12 years withcontent that encourages ethical-moral values and the developmentand evaluation of a game prototype for the target audience. First,we conducted a semi-structured interview with elementary educationteachers. Later, these teachers also answered a questionnaireafter interacting with the first version of the game prototype. Fromthe results found, it was possible to draw up recommendationsfor a game that meets the specific research audience, such as: thegame should have different avatars for the player to choose from,the game should be collaborative, the game should address currentissues. The recommendations can help develop digital games thatencourage elementary education students to become interested ineducational games with a focus on ethical-moral values.
Examinando os Tipos de Feedbacks no Design de Jogos Digitais
Authors: Henrique Marquetti Rondon Luiz , Cherobin Ricardo
Published: July 2022

ABSTRACTFeedback is intrinsic to games. However, its versatility, inside or outside game design, moved its definitions, to intertwining and, at times, to a clear complexity. Thus, the purpose of this work was to unravel the notions of the multifaceted feedback, based mainly on qualified literature in the area. In view of a possible dissemination of feedback techniques in the horizon of the development of digital games, and, to a lesser extent, seeks to redirect the discussion of feedback concepts to the Portuguese language.
Algoritmo para Alocação Ótima de Para-raios em Linhas de Transmissão Inspirado em Busca em Vizinhança Variável
Authors: Christino Marzochi Matheus , Antônio de Vasconcelos João , Da Silva Castro Walace , Luis Vernieri Missé Silvio
Published: July 2022

ABSTRACTThe installation of transmission line surge arresters (TLSAs) hasbeen one of the main solutions found to improve the performanceof overhead transmission lines (OHTLs) against atmospheric discharges.Thus, this work proposes a methodology for the optimalplacement of TLSAs in OHTLs, which is based on the couplingbetween an algorithm inspired by GVNS (General Variable NeighborhoodSearch) and the ATP (Alternative Transient Program) software.The line performance calculation is made considering thetransfer effect of the lightning surge due to arresters operation.This transfer mechanism that can lead adjacent towers to flashoveris rarely mentioned in the literature. A study is performed consideringtwo transmission lines. At the end, in order to analyze theperformance of the proposed methodology, experiments are carriedout to optimize the positioning of TLSAs in the mentioned OHTLs.To validate the developed methodology, the results obtained arecompared with the results acquired through the coupling of a GA(Genetic Algorithm) with the ATP and with the results achievedthrough a classic method for the placement of TLSAs based on thetower-footing impedances. The results show that aspects such asthe lightning surge transfer effect and favoring the positioning ofTLSAs in the lowest phase(s) should be considered in future studiesfor the design of algorithms for optimal placement of arresters onOHTLs.
Acessibilidade em Jogo Digital via Comandos de Voz para Pessoas com Deficiência Motora
Authors: De Medeiros Pereira Matheus , Debatin Lucas
Published: July 2022

ABSTRACTEnsuring accessibility is a mandatory issue by law, both in everyday life and in the context of recreational activities. In electronic games this is no different, to ensure accessibility for people with disabilities (PwD), developers and research are constantly seeking to innovate in technical and methodological issues. This work will present an electronic game of the 2D platform genre for the computer, which offers the user the possibility of controlling through voice commands, generating a form of accessibility for motor PwD. During testing, the API achieved an average margin of error of 14.72% per reconition. Tests were carried out with 21 people without disabilities, who differed by their intimacy with digital games. Based on the results obtained, it was possible to verify that the players performance when using the standard control was superior to the performance using voice controls. This allowed us to analyze that, although voice control is an accessibility option, it is not efficient when compared to the standard options (mouse and keyboard), as the performance of users was superior.
An IoT-based System for Landslides Warnings Using a Real Time Slope Monitoring Model
Authors: A. Souza João , Beatriz C. Pinho Ana , Ferreira Creyton , Monteiro André , Henriques Felipe
Published: July 2022

ABSTRACTThis work presents an IoT-based system for remote monitoringof landslides. The solution uses a Wireless Underground SensorNetwork (WUSN), a cloud computing platform and an App to implementa real time monitoring scheme. The sensor network runson Arduino components connected through Wi-Fi modules, andis responsible to collect soil moisture rates. Then, the collecteddata is sent to a cloud computing environment in order to ensurea robust and secure storage. Moreover, the cloud platform runsa model for triggering an alarm when a potential landslide is detected.Finally, an App aimed to data visualization in real time andlandslides warning is also presented. The proposed work enables areal time end to end solution, once it starts with the data collectedby the humidity sensors and finishes with the data visualization bythe citizens, which is very suitable for Smart Cities and Internetof Things (IoT) environments. The system was evaluated throughreal tests and simulated scenarios. The results show the sensornetwork accurately measured the soil moisture and the landslidesmonitoring model was able to send warnings consistently.
Controle de um Braço Robótico para Reabilitação Motora
Authors: Miguel Weizenmann Sandro , Rafael Garcia Ramirez Alejandro
Published: July 2022

Stroke is one of the main causes of disability in Brazil. Along with spinal cord injury is one of the main motor disorders that lead to physical deterioration and loss of independence in a individual. The use of robots in medicine is becoming more and more recommended because robots have more precision, speed, fatigue-free repetition and shorter operating time among other things. Rehabilitation robo- tic arms have passive, active-assistive and active resistive therapies. In this work, a system to control a robotic arm for the rehabilitation of upper limbs that acts in passive mode was developed. Among the objectives are the implementation of a passive mode control, hardware development, human-machine interface and a system integration analysis. This work is justified due to the promising results of robotic rehabilitation, increased effort at a scientific level to develop neurotechnologies and the studies that were analyzed demonstrating that robotic therapy brings benefits in the functiona- lity of the upper limbs in patients who have suffered a stroke. The development of this work presents a passive mode control inspired by an execution of InMotion, elaborated with the help of a phy- siotherapist, displaying a user-friendly graphical interface which presents the patient’s data and allows them to be saved and used later. Tests showed that the execution of the exercise performed smoothly, without discontinuity with constant speed and correctly stored exercise data.
Construção e Validação de um Sistema IoT de Baixo Custo para Detecção de Vazamento de Água em Residências
Authors: Barbosa de Assis Jr. Luis , Lopes e Silva Fabrício , Da Rocha Henriques Felipe , Pereira de Oliveira Guerra Raphael , De Souza de Carvalho Cristiano , Nunes Brandão Diego
Published: July 2022

The rational use of water is essential to development and economic growth. Data from United Nations (UN) indicates that until 2050 will occur a more significant water scarcity due to the increasing demand for it in emerging countries, mainly with the populational growth of these locals. A conscious consumption by society can softy this effect preserving natural reserves and increasing water security. This premise is used to support the development of this work, which proposes the creation of a low-cost computational system that detects water leakages in residences using Internet of Things concepts. The system includes data acquisition, transmission, processing, and finally displays the information to the user. Empirical assessments about the data transmitting process and a comparison of different architectures and leakage detection techniques are in development to demonstrate proposal viability. The project presents the prototype tested in a real environment.
Evaluating the Impact of Performance and Other Academic Variables on the Trajectory of Graduates
Authors: Christopher Ramos Oliveira William , Vieira de Mello Aline , Oliveira de Freitas Daniel , Fonseca Finger Alice
Published: July 2022

The objective of this research is to evaluate the impact of perfor-mance and other academic variables on the trajectory of graduates of the Computing undergraduate programs at Federal Universityof Pampa. Considering this goal, a survey containing questionsabout academic and professional trajectory, and sociodemographicprofile was constructed and applied to the graduates, as well asa consultation of institutional data. An analysis of the impact ofacademic variables (academic achievement, time to complete theundergraduate program and number of hours in complementaryactivities) on the education level (graduate, master and PhD), onremuneration and on the graduates’ perception of satisfaction withtheir area of expertise was conducted. It was not possible to indicatewhether there is a correlation between academic achievement andthe remuneration of graduates, as well as between the academicachievement and the level of satisfaction with the graduates’ areaof expertise, because there was no statistical significance betweenthose variables. On the other hand, a weak positive correlation wasfound between academic achievement and educational level and amoderate negative correlation between the education level and thetime to complete the undergraduate program.
Drag and Drop to Proof: um jogo digital para demonstrar teoremas
Authors: Henrique de Paula Dias da Silva† Marcos , Rocha de Oliveira Samuel
Published: July 2022

Mathematical proofs are an important aspect in the degree ofmathematicians, and present even in professional degree inrelated areas. Thus, this work sought to appropriate conceptsused in training environments aimed at marathons ofprogramming and work with the use of metaphors toassociate different actions to the process of writing amathematical demonstration, in order to develop a tool tosupport the learn of "how to write a proof in mathematics".This feature involves arranging chunks of text from a proof, anaction considered more complex than reading a proof andusually simpler than writing it yourself. Such dynamicsprovided, above all, the insertion of some playful elementsthat characterize this resource for each mathematicalstatement, as a kind of minigame.
Jogo Educacional Digital para Auxiliar no Ensino de Numerais em Libras e Lógica de Conversão dos Números
Authors: Lira Acza , Veras Adrianne , Araújo Fabíola
Published: July 2022

In view of the importance of teaching computer concepts in basiceducation and a linguistic barrier between deaf and hearing people, this work presents the development of an educational game, cal-led Barco Binário, which helps in learning the logic of converting binary numbers in a playful way and associated with the intro-duction of numerals in Brazilian Sign Language for hearing. The evaluation of the tests applied to expert users indicated that 87,5%of the interviewees understood, partially or totally, the processof binary conversion and about 75% of the evaluators stated thatthey managed to relate the numbers with their respective signs inBrazilian Sign Language after using the game.
Aprendizagem de Máquina na identificação de regiões codantes em sequências de DNA de fungos filamentosos
Authors: Henrique Ferreira Cruz Gustavo , Menossi Vinícius , Melchiori Pinheiro Josiane , Roberto dos Santos Antônio , Luiz Furuhata Ferreira Gustavo , Anduca de Oliveira Sarah
Published: July 2022

The task of identifying intron and exon regions in genes is a verycomplex task, and it is necessary to identify certain nucleotidepatterns in the gene sequence. This task can be done manually orthrough software that most often uses genetic alignment techniques, which is not a very effective way for this purpose. In this oppor-tunity for collaboration between biology and computer science using machine learning techniques, the objective was to predictthe intron and exon regions in filamentous fungi genes as well totranslate the identified regions intro proteic codons. In this paper,the problem was modeled as a supervised learning problem, basedon training a set of genes obtained from GenBank that alreadyhave the intron and exon regions identified. The machine learningmodel used in this work was the Condicional Random Fields (CRF).Through the values resulting from the metrics applied to the model,it can be seen that it is possible to achieve a good precision in thetask of identifying the intron and exon regions as well the proteiccodons. Thus, although there is a need for a greater diversity ofdatabase characteristics to support the effectiveness of identifyingthe splicing sites, this paper gives evidence that it is possible topredict these splicing sites with a good accuracy.
Sistema de decisão multicritério e multiobjetivo para programação de produção e dimensionamento de lote em uma indústria de beneficiamento de malha
Authors: Vieira Orti Maxsuel , C. G. Teive Raimundo
Published: July 2022

As atividades de programação de produção e dimensionamento de lotes são essenciaisno processo de decisão operacional de uma indústria, sendo a otimização destasfundamentais para a lucratividade de uma empresa. Essa otimização tem umacomplexidade computacional alta, sendo classificado como um problema NP-Difícil.Neste trabalho foi aplicado a este problema de otimização um Algoritmo GenéticoMultiobjetivo NSGA-II, combinado com um modelo multicritério, o Rank OrderCentroid (ROC), com o objetivo de maximizar a quantidade produzida, minimizar ocusto médio e minimizar o desvio entre o que é produzido e o que está em estoque. Osresultados obtidos com os experimentos realizados, em uma indústria debeneficiamento de malhas, apontam que o algoritmo desenvolvido diminuiu em 12%o custo médio, aumentou em 10% o peso total programado e minimizou a distânciapara o estoque regulador em 8%, indicando que a solução proposta é viável,apresentando um desempenho superior, em todas as funções objetivos, ao modeloimplementado pela empresa.
Abordagem de Simulação de Ruídos para Avaliação do Reconhecimento de Locutores em Ambientes Ruidosos
Authors: Almeida dos Santos Vinícius , Maria da Rocha Fernandes Anita , Delcio Parreira Wemerson
Published: July 2022

There is frequent noise that affects the performance of voice recog-nition and speaker recognition algorithms in a real-world envi-ronment. For voice and speaker recognition systems to be more robust, these noises must not interfere in a harmful way, causingerrors in understanding commands. To evaluate signal degradationand speaker recognition when exposed to real-world environments,we explore a reverberation noise simulation environment usinga specific library in this work. We tested a speaker recognition model with i-vectors and Probabilistic Linear Discriminant Analy-sis (PLDA). We have analyzed the impact of noise in conjunction with reverberation on its error rate. Results based on Monte Carlosimulation showed that, for the tested cases, the noise set withreverberation worsened the recognition rate by up to 24,43%.
Evoluindo Redes Neurais Convolucionais na Detecção de Emoções Usando Micro AGs
Authors: Ademir Domingos Diogenes , Andres Carmona Cortes Omar , Manoel França Lobato Fábio
Published: July 2022

The Deep-emotive v.1 is a CNN that recognizes emotions by thehuman face’s pictures. In this context, the CNN’s structure creationdepends on several hyperparameters, which impact the resultspositively or negatively. The Genetic Algorithm implementationallows us to explore the search space of these hyperparametersto find the best architecture for solving the problem. The definedsearch space is formed by the combination of both the numberof convolutional layers and the fully connected ones, the numberof filters for each layer, the size of filters, the subsampling type,and the number of nodes in the fully connected layer. This paper proposes to improve the Deep-Emotive network with the imple-mentation of Convolutional Neural Networks (CNNs) architectures using Genetic Algorithms. The FER-2013 dataset was chosen toclassify seven emotions by images of facial expressions, as it had the worst performance in the first version of the network, reach-ing an accuracy of 60.71%. This dataset has images with common problems for computer vision algorithms, such as occlusion, im-balance, perspective, noises, as well as images that do not exist in the context of emotions. The experiment’s results indicate thatthe proposed approach can generate a CNN architecture with anaccuracy of 63,84% in the train set and 62,39% in the validationset. Despite a low-performance rate, the experiments indicate thatthe algorithm can generate more adapted individuals who havealready overcome the performance achieved by the first version ofthe network defined empirically. Thus, results show potential forexploitation in environments with more computational resources.
Aplicabilidade da encriptação especulativa em CPUs multicore para sistema de arquivo no espaço de usuário
Authors: Carlos Oliveira de Andrade Vinícius , Machado Nunan Zola Wagner
Published: July 2022

Due to the constantly growing need for security and efficiencyin accessing stored data, there is also constant search for betterstorage media that bring this warranty. Previous research has led tothe creation of libraries for parallel processing on GPU to performspeculative encryption of data. The efficiency of this method wasdemonstrated in its use in cryptographic file systems. However, theapplicability and effectiveness of these methods using only CPUs remained an open problem. In order to test the feasibility of specu-lative cryptography in computing environments with CPUs only, this work presents a library version for speculative encryption withparallel processing on multicore processors and its adaptation to the EncFS++ file system in user space. The tests carried out show con-siderable increases in throughput in the most varied environments, both physical and virtual machines, using CPUs that may or maynot support the AES-NI instruction set for encryption acceleration.
Mineração de Dados para Identificar Aspectos que Influenciam o Desempenho nas Vendas de Produtos em uma Indústria de Confecção Do Vestuário
Authors: D. E. Melchioretto † Anderson , B. Martins Rafael
Published: July 2022

In garment industry, the production process is composed of severalsteps, starting with product development, production until itreaches the customer. All these processes generate a large volumeof data, about products, customers, sales, among others. The lackof knowledge about this data generated in the companies, cangenerate problems such as product returns and consequently theloss of customers. The application of data mining (DM) tasks canextract hidden patterns from this data. In this context, DMtechniques following Knowledge Discovery in Database (KDD)steps were used to identify patterns that may influence productsales performance in an apparel manufacturing industry. Thedataset considered were composed of 31 attributes, aboutcustomers, products, sales, from the years 2018 through 2020. Themain results of this analysis identified the attributes that mostinfluence product sales, which are: “product line”, “quota item”,“customer code”, and “tax coupon number”.
Um Estudo sobre Motivadores e Deterrentes de Evasão no Curso de Sistemas de Informação
Authors: Alexandrino de Souza Joubert , Satie Komati Karin , Oliveira Andrade Jefferson
Published: July 2022

Dropping out in higher education is a serious problem that has been investigated for decades and causes great harm to individuals, edu-cational institutions, and society as a whole. This article presents a case study on the application of the survival analysis combinedwith the construction of predictive models in the identificationmotivating and deterrent elements of dropout in an undergraduateprogram in Information Systems at a public institution of higher education in Brazil. Methods of educational data mining and pro-babilistic modeling were applied to student data to model students’ expected completion of the course, semester by semester. The re-sults of the survival analysis are consistent with the literature and indicate the greatest risk of dropout is in the initial semesters ofthe course, while the identification of characteristics of dropoutmakes it clear that the subjects of the first two semesters are thebiggest barriers of the course retaining about 50% of the studentpopulation.
Rain Alert - Mapeamento de Desastres Naturais
Authors: Martins Razera Tatiele , Dos Santos Matheus , Camillo Junior Ademir
Published: July 2022

Natural disasters, such as floods, floods and inundations, arefrequent in Brazil, and it is important to know the placesthat experience these disasters. In this context, this work ispresented, which proposes an application, with which it willbe possible to make disaster markings and visualize on themap the disasters according to the region of interest of theuser, thus making it possible to avoid risk areas and promotepreventive planning of occurrence control.
GPUramfs: Um sistema de arquivos em espaço de usuário para armazenamento volátil em GPU
Authors: Pires Correia Jorge , M. Nunan Zola Wagner
Published: July 2022

GPUs are increasingly present in personal computers. Most of thetime they are idle. Using the memory resources of these devicescan free up space in the host’s RAM, allowing the operating systemto use it efficiently. This work presents the initial implementationof GPUramfs, a volatile file system that uses the GPU as a storagedevice. The system exhibited good performance even in comparisonto EXT4 using NVMe high throughput disks.
Sistema de redução de ruído de baixo custo para sistemas de auxílio à audição: algoritmo RACE.
Authors: Miyuki Kaihatu Thaís , Coelho Borges Renata
Published: July 2022

Hearing impairment affects about 1.5 billion people worldwide,10.7 million of which only in Brazil. As a solution to maximizehearing capacity, the use of hearing aids is commonly indicated.However, the adherence of these devices is low, largely due to thelow sound quality in noisy environments and their high cost. Tominimize these obstacles, several studies and research are carriedout both on the hardware part and on noise reduction techniques.The technique addressed in this work is the Real Time AdaptativeCorrelation Enhancer algorithm, an adaptive filter that uses theautocorrelation coefficients of the noisy audio signal to calculatethe coefficients of Wiener’s FIR (Finite Impulse Response) filter. Aspreliminary results, the simulation of the algorithm in MATLAB®ispresented to discuss the performance of the algorithm. As futurestudies, it is planned to implement the algorithm on the TexasInstruments®MSP432 microcontroller low-cost development board,to analyze the algorithm’s performance with samples in real time.
Desenvolvimento de uma Arquitetura Baseada na Internet das Coisas para uma Bengala Eletrônica Baseada no Contexto das Cidades Inteligentes
Authors: Douglas Cabral Alves Michael , Rafael Garcia Ramirez Alejandro , Maria da Rocha Fernandes Anita
Published: July 2022

This paper describes an architecture based on the Internet ofThings (IoT) for the electronic cane project. It was designed toassist the locomotion process of visually impaired individuals inthe context of smart cities. The architecture allows, through amicrocontroller and a GPS module embedded in the cane, toregister and subsequently identify obstacles according thegeographic coordinates. A smartphone was used to transmit andstore this information in the cloud for further processing. Theinteraction of the cane with the smartphone will open a futurerange of applications, such as the identification of points ofinterest, detecting the proximity of other users of the electroniccane, among other uses. The functionality tests were satisfactory,with an accuracy of 80% identifying the recorded obstacles.
PMOGA Aplicado ao Problema de Alocação de Religadores Automáticos em Sistemas de Distribuição Elétrica
Authors: Pauli Guilherme , Antonio Cardoso Aranha Neto Edison , Tenfen Daniel
Published: July 2022

The planning of electrical distribution systems is essential and achallenge for Electric Power Distribution Companies along withthe need to improve the quality of the energy distribution service.As presented in the recent literature, the use of switches andprotection devices can improve the quality of the electricitydistribution service and, thus, system reliability indices. The mainobjective of this work is to propose a model to optimally allocatereclosers in distribution feeders with a Multi-Objective GeneticAlgorithm (MOGA) that is modeled, validated by exhaustivesearch, when possible, due to computational limitation, proving itseffectiveness. Among the possibilities, the Pareto Multi-objectiveOptimization Genetic Algorithm (PMOGA) was chosen for thiswork. Then, the developed methodology was applied in real feederswith and without Distributed Generation. Finally, it is concludedthat the proposed model for the allocation of reclosers is adequateto solve the problem and positively affects the reliability and canbe used in most of the current electricity distribution networks.
Diretrizes para o Desenvolvimento de Agentes Relacionais Baseados em Common Ground para Pessoas Idosas
Authors: Gama Thiago , Oliveira Francisco
Published: July 2022

Por conta do crescente isolamento de idosos em casa, estes podemse encontrar cada vez mais solitários e deprimidos. Emcontrapartida, existe a figura dos cuidadores de idosos, quepossuem um papel primordial na preservação da saúde dessesidosos e também na diminuição da solidão dos mesmos. Porém,em um futuro não muito distante, talvez se torne escassa adisponibilidade deste profissional no mercado para atender àcrescente demanda decorrente do observável envelhecimento dapopulação mundial. Tendo isso em vista, o foco deste trabalho é oenvelhecimento saudável e a promoção da autonomia do idoso. Osagentes relacionais são chatbots com características humanas(nome, voz, emoções, opiniões, etc.), eles têm o potencial depossibilitar um engajamento maior entre o usuário e a aplicação.Neste sentido, este trabalho, de caráter quanti-quali, exploratório eexperimental, visa explorar formas de se assegurar o engajamentode longo prazo entre idosos e agentes relacionais no intuito demitigar o problema da solidão tão presente na sociedade moderna.Essa investigação busca entender as potencialidades do uso deagentes conversacionais embarcados em alto-falantes inteligentesna interação com 7 (sete) idosos com idade superior a 60 anos noambiente domiciliar durante um mês. Para a construção de talsaber, propõem-se um experimento Mágico de Oz, Instrumento decoleta de dados: embasado nos dados obtidos via ferramenta daspessoas do círculo social do idoso, que está devidamenteregistrado na Plataforma Brasil sob o número CAAE46437621.7.0000.5534, Mágico de Oz, por meio do qual o autorinterage diretamente com as pessoas idosas por meio dodispositivo Echo Dot. Esse experimento assegura que o idosoimaginará que a interação se dará entre ele e o agenteconversacional, quando, na verdade, o autor fará o papel doagente. O autor seguirá um protocolo de pesquisa que lheassegurará a devida análise do corpus de interação produzido, quelhe servirá de base para avaliação das oportunidades e riscos que atecnologia oferece. O protocolo de interação será construído apartir da construção prévia de um banco de dados de informaçõesrelevantes dos sujeitos de pesquisa com base no common groundobtido. Portanto, o intuito desta pesquisa é de identificar oselementos comunicacionais que melhoram o engajamento dousuário idoso com interfaces de voz e, a partir desses achados,criar diretrizes para futuros pesquisadores e desenvolvedores deagentes relacionais dirigidos ao público idoso.
Educação 3.0: realidade aumentada em Libras na educação profissional e tecnológica.
Authors: Victor Rodrigues Viana Hugo , Gustavo Lima dos Anjos João , De Souza Ribeiro Neto Benedito
Published: July 2022

In Education 3.0, learning takes place through learning-by-doing,that is, through participation in tasks and learning projects that aimto build practical and valuable knowledge for the person and forsociety, including it in the world of work, without being restrictedto their demands, aiming at social transformation. In this context,this study intended to make a brief systematic mapping of theliterature on assistive technologies with augmented reality used inprofessional and technological education that promote education3.0. The study generated a taxonomy to answer research questionswith results important, as the high frequency of use of Smartphonesin the papers, as well as the use of augmented reality with Librasfor accessibility for deaf people. Based on the findings of thisresearch, it was possible to propose an assistive technology to beused in the professional education of the information andcommunication axis, consequently, this study will help researchersto choose the assistive technology that best fits the reality of theircourse or discipline.
O Método de Monte Carlo Aplicado à Análise do Custo de Aquisição de Ações no Contexto de Um Pequeno Investidor
Authors: Saibert Eduarda , Delvoss Ribas Kauane , Rodrigues de Melo Adriano
Published: July 2022

This study to analyze the importance of the purchase priceof shares in the financial result of a portifolio of investiments invariable in the long term. This subject ishighlighted in the internet channels that produce content aboutinvestiments and whose target audience is the small investor. TheMonte Carlo Method was used to estimate the average percentagereturn ofsmall investor who follows the strategy of, once a month and for a period of ten year,allocating capital in variableincome. The simulations were carried out based on the hsitoricalseries of the Bovespa Index and the comparison metric adoptedwasthe maximum return for the period. In the simulation periods,the difference between the average return and the maximum return was less than 10% (equivalent to less than 1% per year)
Competencias del innovador e innovación en marketing: un modelo de ecuaciones estructurales para empresas manufactureras de muebles de la provincia de Puno (Perú)
Authors: Cutipa-Limache Alberto Magno , Acero Apaza Inés Miryam , Barrial Acosta David , Ticona Machaca Alejandro , Margalina Vasílica María
Published: July 2022

Introducción/objetivo: el entorno dinámico y competitivo exige a las empresas crear valor mediante la innovación, por lo que el objetivo de la investigación fue explorar si las competencias del innovador de observación (CIO), cuestionamiento (CIC), experimentación (CIE), creación de redes (CICR) afectan a la innovación en marketing (IM) por medio de la competencia del innovador de conexión de ideas (CICI) en las empresas manufactureras de muebles de madera en Puno (Perú). Metodología: el estudio corresponde al enfoque cuantitativo con alcance explicativo y diseño no experimental-transeccional. La muestra fue de 73 dueños o gerentes de las empresas manufactureras de muebles de la provincia de Puno (Perú), a quienes se suministró un cuestionario con 34 ítems. Resultados: los resultados del modelo estructural reflejan que la varianza de la CICI se debe a los efectos positivos de las CIE y CICR. Además, el modelo explica de manera significativa la varianza de IM. Conclusiones: el modelo explica y predice la varianza tanto de la CICI como de la IM. Por otro lado, las CIE y CICR son los que afectan de forma directa y significa en las CICI, y esta a la vez afecta de la misma forma en la IM de las empresas manufactureras de muebles en la Provincia de Puno, Perú.
El trabajo social clínico como enfoque preferente
Authors: Giménez Rodríguez Silvia
Published: July 2022

España cono Estado social y democrático de Derecho, se articula con un sistema público de Servicios Sociales como garantía de los derechos de todas las personas al margen de su situación económica y social. Este, marca sus objetivos para las personas vulnerables y o en proceso de exclusión a través de estrategias de inclusión basadas fundamentalmente en políticas sociales de inclusión económica, laboral y social. Este artículo plantea una reflexión sobre el objetivo de inclusión mercantilista y de utilidad social, olvidando la primera de las premisas de una inclusión integral, que está basada en el empoderamiento como persona. El trabajo social clínico contempla la intervención psico-social en una única intervención, en aras a fortalecer en primer lugar al SER humano vulnerado, para que desde su propio poder recupere sus capacidades para vivir integrado en la sociedad y sea sujeto activo en la construcción social. El Estado de Bienestar no sólo ha de garantizar los derechos civiles y sociales, sino en primer lugar los personales, que hagan protagonista activa y no pasiva a cada persona. ¿Realmente este es el enfoque actual?
Pseudodictamnus africanus (L.) Salmaki & Siadati (Lamiaceae): Ethnomedicinal uses, phytochemistry and pharmacological properties
Authors: Maroyi Alfred
Published: July 2022

Pseudodictamnus africanus (L.) Salmaki & Siadati is a perennial herb which naturally occurs in Namibia and South Africa. Southern Africa is characterized by several indigenous medicinal plants and natural products that are widely used in traditional materia medica. However, there is dearth of information on botanical description, medicinal uses, plant parts used, preparation and dosage, active ingredients and pharmacological effects of medicinal plants like P. africanus in the public domain. Therefore, this study reviewed the medicinal uses, active bioactives and biological activities of P. africanus. A systematic review of electronic databases and pre-electronic sources with information on the botany, medicinal uses, herbal preparations, active bioactives and pharmacological effects of P. africanus was conducted. No time limit was set for the research and all literature sources aligned with the scope of the research were included. This study showed that P. africanus is used as traditional medicine for liver problems, sores, wounds, heart problems, hysteria, skin ailments, headache, insomnia, fever, typhoid fever and respiratory problems. Pharmacological research identified hispanolone, dehydrohispanolone, saponins, tannins, phenolics, flavonoids, reducing sugars, resveratrol, triterpene steroids and essential oils. The crude extracts of P. africanus and essential oils isolated from the species exhibited antibacterial, antifungal, anti-inflammatory, anti-nociceptive, immunological and sedative-hypnotic activities. More research is needed to assert the medicinal and ethnopharmacological properties of the crude extracts of P. africanus and phytochemical compounds isolated from the species, and also determine the toxicological effects of the species and its phytochemical compounds.