bluuebunny/crossref_metadata_2025 huggingface dataset:
ASSESSMENT OF VOLUME AND ABOVE-GROUND BIOMASS IN ARAUCARIA FOREST THROUGH SATELLITE IMAGES, COMPARING DIFFERENT METHODS IN THE SOUTH OF CHILE
Authors: Pirotti F. , Kutchartt E. , Csaplovics E.
Published: November 2020

Abstract. Initial results of biomass estimation in the La Fusta area from existing equations found in literature are presented. As expected, accuracy of general equations suffer from the equation coefficients being obtained from fitting training data from different sites. It is also clear from the results that there is a high variance between different methods, in particular when complex data mixture is applied. Biomass is difficult to assess for dense forests, as pixels are saturated. This must be considered when planning field-data collection, with more samples in dense forest to provide more robust estimators from the training phase. The SAR-only (PALSAR) method from eq. 4 provided the most bias in results, overestimating with respect to the other methods.
BRAZILDAM: A BENCHMARK DATASET FOR TAILINGS DAM DETECTION
Authors: Ferreira E. , Brito M. , Balaniuk R. , Alvim M. S. , dos Santos J. A.
Published: November 2020

Abstract. In this work we present BrazilDAM, a novel public dataset based on Sentinel-2 and Landsat-8 satellite images covering all tailings dams cataloged by the Brazilian National Mining Agency (ANM). The dataset was built using georeferenced images from 769 dams, recorded between 2016 and 2019. The time series were processed in order to produce cloud free images. The dams contain mining waste from different ore categories and have highly varying shapes, areas and volumes, making BrazilDAM particularly interesting and challenging to be used in machine learning benchmarks. The original catalog contains, besides the dam coordinates, information about: the main ore, constructive method, risk category, and associated potential damage. To evaluate BrazilDAM’s predictive potential we performed classification essays using state-of-the-art deep Convolutional Neural Network (CNNs). In the experiments, we achieved an average classification accuracy of 94.11% in tailing dam binary classification task. In addition, others four setups of experiments were made using the complementary information from the original catalog, exhaustively exploiting the capacity of the proposed dataset.
SEMANTIC SEGMENTATION OF ENDANGERED TREE SPECIES IN BRAZILIAN SAVANNA USING DEEPLABV3+ VARIANTS
Authors: Torres D. L. , Feitosa R. Q. , La Rosa L. E. C. , Happ P. N. , Marcato Junior J. , Gonçalves W. N. , Martins J. , Liesenberg V.
Published: November 2020

Abstract. Knowing the spatial distribution of endangered tree species in a forest ecosystem or forest remnants is a valuable information to support environmental conservation practices. The use of Unmanned Aerial Vehicles (UAVs) offers a suitable alternative for this task, providing very high-resolution images at low costs. In parallel, recent advances in the computer vision field have led to the development of effective deep learning techniques for end-to-end semantic image segmentation. In this scenario, the DeepLabv3+ is well established as the state-of-the-art deep learning method for semantic segmentation tasks. The present paper proposes and assesses the use of DeepLabv3+ for mapping the threatened Dipteryx alata Vogel tree, popularly also known as cumbaru. We also compare two backbone networks for feature extraction in the DeepLabv3+ architecture: the Xception and MobileNetv2. Experiments carried out on a dataset consisting of 225 UAV/RGB images of an urban area in Midwest Brazil demonstrated that DeepLabv3+ was able to achieve in mean overall accuracy and F1-score above 90%, and IoU above 80%. The experimental analysis also pointed out that the MobileNetv2 backbone overcame its counterpart by a wide margin due to its comparatively simpler architecture in view of the available training data.
CLASSIFICATION OF LAND-COVER THROUGH MACHINE LEARNING ALGORITHMS FOR FUSION OF SENTINEL-2A AND PLANETSCOPE IMAGERY
Authors: Zaraza Aguilera M. A.
Published: November 2020

Abstract. To monitor and manage the changes in the land use and land cover, is vital the process of classification; machine learning offers the potential for effective and efficient classification of remotely sensed imagery. However, not many articles have explicitly dealt with the effects of image fusion on land-cover classification accuracy. Although some studies have compared thematic mapping accuracy produced using different classification algorithms, there are no currently many studies that utilize image fusion for assessing different machine learning algorithms for classification purposes. The main aim of this study is to compare different machine learning algorithm for pixel classification of imagery fused with sensors Sentinel-2A and PlanetScope. The method used for image fusion is a variational model, the high spectral resolution of Sentinel-2A imagery and the high spatial resolution of PlanetScope imagery was fused; the machine learning algorithms evaluated are six that have been widely used in the remote sensing community: DT (Decision Tree), Boosted DT, RF (Random Forest), SVM radial base (Support Vector Machine), ANN (Artificial Neural Networks), KNN (k-Nearest Neighbors), for the classification four spectral indices (NDVI, NDMI, NDBI, MSAVI) were included, derived of the image fusion. The results show that the highest accuracy was produced by SVM radial base (OA: 87.8%, Kappa: 87%) respect to the other methods, nevertheless the methods RF, Boosted DT and KNN shown to be very powerful methods for classification of the study area.
RECENT LAND USE AND LAND COVER CHANGE DYNAMICS IN THE GRAN CHACO AMERICANO
Authors: Banchero S. , de Abelleyra D. , Veron S. R. , Mosciaro M. J. , Arévalos F. , Volante J. N.
Published: November 2020

Abstract. Land transformation is one of the most significant human changes on the Earth’s surface processes. Therefore, land use land cover time series are a key input for environmental monitoring, natural resources management, territorial planning enforcement at national scale. We here capitalize from the MapBiomas initiative to characterize land use land cover (LULC) change in the Gran Chaco between 2010 and 2017. Specifically we sought to a) quantify annual changes in the main LULC classes; b) identify the main LULC transitions and c) relate these transitions to current land use policies. Within the MapBiomas project, Landsat based annual maps depicting natural woody vegetation, natural herbaceous vegetation, dispersed natural vegetation, cropland, pastures, bare areas and water. We used Random Forest machine learning algorithms trained by samples produced by visual interpretation of high resolution images. Annual overall accuracy ranged from 0,73 to 0,74. Our results showed that, between 2010 and 2017, agriculture and pasture lands increased ca. 3.7 Mha while natural forestry decreased by 2.3 Mha. Transitions from forests to agriculture accounted for 1.14% of the overall deforestation while 86% was associated to pastures and natural herbaceous vegetation. In Argentina, forest loss occurred primarily (39%) on areas non considered by the territorial planning Law, followed by medium (33%), high (19%) and low (9%) conservation priority classes. These results illustrate the potential contribution of remote sensing to characterize complex human environmental interactions occurring over extended areas and timeframes.
IMPORTANCE OF REMOTE SENSING FOR THE STUDY OF SPATIAL DYNAMICS OF ESTUARINE NEUSTON FROM SOUTHERN CHILE
Authors: Cañete J. I. , Cárdenas C. , Frangópulos M. , Aguilar X. , Díaz-Ochoa J.
Published: November 2020

Abstract. Zooplankton aggregation, hydrographic and remote sensing data were employed to relate the spatial dynamics of neustonic communities with chlorophyll a (Chl a) and suspended organic matter (SOM) at a spatial mesoscale (10 to 1000 km) in the southern Chilean fjords system along Magellan Strait, Chile (CIMAR 16: October/November 2010 and CIMAR 25; September/October 2019) in order to identify oceanographic process producing aggregation of neuston. Preliminary evidence of CIMAR 25 shows significant concentrations of Chl a and SOM around Dawson Island (DI), Magellan Strait. During CIMAR 16 important aggregation of specific neustonic taxa (copepodites of Microsetella rosea, larvae of the polychaete Polygordius sp and cyphonautes of the bryozoan Membranipora isabelleana) was observed around DI, Magellan Strait. Satelital images in the area of CIMAR 16 provide evidence of important aggregation of chlorophyll a/SOM around DI. CIMAR Cimar 25 showed that the Chl a and SOM aggregation around DI is recurrent and could to explain the high concentration of neuston around this island to spite of mesotrophic conditions. Remote sensing in this study area provides a tool to understanding oceanographic and topographic factors that potentially regulate the abundance and spatial distribution of surface zooplankton to spatial meso-scale along Magellan Strait.
ACCUMULATED REFLECTANCE TECHNIQUE FOR SAMPLING DELIMITATION IN THE RIACHO FUNDO CREEK, LAGO PARANOÁ-DF, FROM PLANETSCOPE IMAGES
Authors: Marinho C. S. , Sacramento V. , Cangiano M. R. , Cicerelli R. E. , Almeida T.
Published: November 2020

Abstract. The delimitation of sampling points is an important step to avoid unnecessary costs in water collection process and laboratory analysis. Based on the accumulated reflectance of PlanetScope imagens, it was possible to verify areas of greater spectral variability related to the presence of Optically Active Components (OAC). In order to do that, the accumulated reflectance method was used, based on multitemporal images. For that, three PlanetScope Ortho Scene Products were tested: Atmospheric Corrected for Surface Reflectance (SR), Digital Number (DN), and Top of Atmosphere Reflectance (TOA) images. SR and DN products had similar outcome, while DN product was not ideal for the purpose of this article. Even though SR and DN products were able to delimitate sampling points, they may have radiometric issues, mainly because of their near infrared values.
O Cruzeiro e a reinvenção de Machado de Assis
Authors: Crestani Jaison Luís
Published: November 2020

Este artigo apresenta uma análise da colaboração de Machado de Assis nas páginas do jornal O Cruzeiro. O estudo da interação dinâmica do autor com o contexto de produção do periódico permite identificar os traços de sua inscrição singular em projetos editoriais coletivos e os resultados criativos decorrentes da apropriação do conjunto de discursos, códigos e signos que formam a cultura de seu tempo. A dominante estilística do material remetido ao jornal consiste no humor, na paródia, na experimentação formal e na irreverência crítica – aspectos que responderiam pela inscrição da literatura machadiana na tradição da sátira menipeia. Com a análise dessa narrativa, pretende-se demonstrar, portanto, que O Cruzeiro afirma-se como mediador e suporte, por excelência, dos exercícios experimentalistas que resultaram na transformação da prática criativa de Machado de Assis ao final da década de 1870.
A captura das subjetividades como estratégia nas relações de poder na sociedade capitalista
Authors: Costa Carmem Lúcia
Published: November 2020

Este artigo apresenta uma reflexão sobre o processo de captura das subjetividades dos/as trabalhadores/as nos tempos de avanço do projeto neoliberal de extrema direita no Brasil, marcado pelo projeto de poder que exclui, segrega, mata e subjuga a classe trabalhadora a partir de retirada de direitos, mas sobretudo, pela inserção da lógica da mercadoria na vida cotidiana. Para realizarmos o exercício de compreensão, buscamos neste artigo discutir as subjetividades sob a ótica do materialismo histórico e dialético para entender sua dinâmica e, assim, sua captura e sua condição de superação. O artigo reafirma a necessidade da construção de um projeto de superação da sociedade capitalista e da produção de novas subjetividades a partir da resistência popular, da ciência e de novas formas de produzir o cotidiano.
O Perfil do estado de humor, da motivação e da impulsividade de escolares participantes dos jogos escolares da juventude
Authors: Costa Karla Medeiros , Costa Gustavo De Conti Teixeira
Published: November 2020

O objetivo desse estudo foi analisar o estado de humor, a motivação e a impulsividade de escolares participantes dos Jogos Escolares da Juventude. A amostra foi composta por 147 estudantes de ambos os sexos com idades entre 12 e 17 anos. Os instrumentos utilizados foram a escala Brunel mood scale; a escala para a motivação para atividade física medida revisada (MPAM-R) e a escala de comportamento impulsivo (UPPS). Os resultados indicaram que o humor dos escolares apresentou fator positivo, com elevados níveis de vigor; as dimensões que mais motivam os escolares se relacionam à motivação intrínseca; e a impulsividade se caracterizou pela busca de sensações e urgência, indicando que tendem se engajar em situações e atividades excitantes e a curto prazo.
PERFIL COMUNICATIVO DE ESCOLARES COM NECESSIDADES ESPECIAIS: BASE PARA ASSESSORIA EDUCACIONAL
Authors: Schier Ana Candida , Soriano Karen Regiane , Oliveira Jáima Pinheiro de
Published: November 2020

O objetivo desse estudo foi traçar o perfil comunicativo de alunos que frequentavam escolas especial e regular, com foco para intervenções junto ao processo de ensino-aprendizagem. Participaram da pesquisa nove escolares, com idade entre sete e quinze anos, sendo seis meninos e três meninas. Sobre os diagnósticos, verificou-se: Paralisia Cerebral (5), Síndrome de Down (3), Atraso Global de Desenvolvimento (1). Os dados indicaram algumas necessidades: início de ações relacionadas à identificação de vocabulário funcional, em ambientes domiciliar e escolar, para implementação de Comunicação Alternativa e/ou Suplementar; suporte em relação aos aspectos de aquisição de linguagem oral; adaptações curriculares; orientações sobre o ingresso de indivíduos no ensino regular. Os dados indicaram também uma regularidade no início das ações necessárias. Para os indivíduos com Paralisia Cerebral, iniciou-se com a Comunicação Alternativa e/ou Suplementar, independentemente do ambiente (familiar e/ou escolar). Quanto aos indivíduos com Síndrome de Down, o suporte inicial deveria favorecer o uso funcional da linguagem, por meio de observações em ambientes específicos de interação. Os resultados permitiram considerar, por fim, que uma atenção especial deve ser dada à variabilidade do processo de aquisição de linguagem, diante de diagnósticos semelhantes.
MOVIMENTO E TÉCNICA: o fenômeno da aprendizagem e sua relação entre plasticidade neural e cultura
Authors: MACEDO LIBNI DAVID DE SANTANA , PURIFICAÇÃO THAÍS ALMEIDA , SILVA JÉSSICA SOUZA SANTANA
Published: November 2020

Aprender não é um ato simples, por esta razão o estudo da aprendizagem do movimento e da técnica a partir da plasticidade neural e da cultura representa uma análise mais complexa do estudo de como acontece esse fenômeno. Levantamos questões como: qual a influência da cultura na aprendizagem da técnica? Como a cultura interfere no processo de plasticidade neural? Qual a relação destes fatores na aprendizagem da técnica durante a infância? Foi feito um levantamento bibliográfico a partir da Neurociência, Sociologia, Antropologia e a Educação Física. Objetivamos relacionar a aprendizagem da técnica a partir da plasticidade neural e a influência da cultura nesse processo. A partir das bases teóricas sobre aprendizagem via plasticidade neural e sua relação com a cultura ainda na infância, balizamos a discussão no antropólogo francês Marcel Mauss. A revisão está dividida em três tópicos:  o primeiro explicita a aprendizagem a partir da plasticidade neural; no segundo, relacionamos o ato de aprender aos aspectos da cultura; e, no último, tomamos como base o conceito de tradição cultural de Marcel Mauss aplicado a educação infantil. Consideramos que na infância ocorre com veemência a maturação do sistema nervoso possibilitando que a plasticidade esteja em efervescência. Aspectos da cultura são fenômenos determinantes, é neste momento que a criança estabelece contato com a escola, família, religião, mídia, dentre outros. Por tanto, a importância da tradição cultural, influenciando na transmissão de conhecimento, principalmente nesta fase, parece ocorrer por meio da mimese social.  Uma vez que é um processo de retroalimentação, que ocorre de forma harmônica e dinâmica, e que torna cada aprendizagem singular e cultural ao mesmo tempo. Desta forma, concluímos que a cultura é dinâmica e parece influenciar diretamente na plasticidade neural. Sendo, portanto, necessário considerar os indivíduos como produtores e produtos desta dinâmica, uma vez que estão em constante deslocamento.
Green supplier selection using fuzzy Delphi method for developing sustainable supply chain
Authors: Mabrouk Nejah Ben
Published: November 2020

The objective of this paper is to examine the determinants of the supplier selection process with green consideration. Thus, this analysis gathers a collection of factors from established literature of green supplier selection (GSS), including seven categories and 58 attributes. The objective of this research is to classify the key factors which are presented as qualitative information. Fuzzy logic rules are used to transform qualitative expert knowledge into numerical data. Then, we adopt the Delphi method (DM) to filter and rate unneeded factors according to their relevance. The results indicate 24 important factors for the GSS process. Five categories are included: Performance and technology ability, Environmental management, Pollution control, Quality and Service. The most significant factors are recognized as green research and development, eco-design, green image, green packaging and remanufacturing. Finally, the debate is held on the basis of the findings and future research are also recognized and stated.
Monitoring image-based processes using a PCA-based control chart and a classification technique
Authors: Kazemi Setareh , Niaki Seyed Taghi Akhavan
Published: November 2020

Machine vision systems are among the novel tools proven to be useful in different applications, among which monitoring and controlling manufacturing processes is one of the most important ones. However, due to the complexity resulted from high-dimensional image data and their inherent correlations, the acquisition of traditional statistical process control tools seems inapplicable. To overcome the shortcomings of the traditional methods in this regard, a statistical model is proposed in this paper which utilizes the concepts of both the PCA-based T2 control chart and the classification methods to develop a tool capable of controlling an image-based process. By defining the warning zones, collected data taken from an image-based process are classified into more than the two classes related to in-control and out-of-control processes. This helps practitioners to define rules to make it easier to realize when the process is getting out of control. Through simulation, the accuracy performance and the speed of four different types of classifiers including linear discriminant analysis (LDA), quadratic discriminant analysis (QDA), kth nearest neighbors (KNN), and support vector machine (SVM) are assessed in different scenarios, based on which the functionality of the proposed approach is evaluated in in-control and out-of-control conditions.
Optimizing bid search in large outcome spaces for automated multi-issue negotiations using meta-heuristic methods
Authors: Amini Mohammad , Fathian Mohammad
Published: November 2020

Bidding strategy is an important part of a negotiation strategy in automated multi-issue negotiations. In order to present good offers, which help maximize the agent’s utility, we need to search the outcome space and find appropriate bids. Bid search can become challenging in large outcome spaces with more than ten thousands of possible bids. The traditional search methods such as exhaustive or binary search are not efficient enough to find the right bids in a large space. This is mostly due to the high number of issues, high number of possible values for each issue, and increased time complexity of usual search methods. In this paper, we investigate the potential of using meta-heuristic methods for optimizing bid search in large outcome spaces. We apply some of the most popular meta-heuristic algorithms for bid search in bidding strategy of baseline negotiating agents and evaluate their impacts on negotiation performance in different negotiation domains. The evaluation results obtained through comprehensive experiments show how meta-heuristic algorithms can help improve bid search capability and consequently negotiation performance of the agents on different performance criteria. In addition, we show which search algorithm is most suitable for improving any particular performance criterion.
How Flexible Work Arrangements Affects Affective Organizational Commitment, and Work-Life Enrichment in Pakistan’s Service Industry: The Role of Time Planning, Work-Life Conflict, and Engagement
Authors: Gill Alpha Kaleb , Siddiqui Danish
Published: November 2020

Work-life balance is now being encouraged in organizations across different cultures. Moreover, amidst the current ‘pandemic’ status of widespread disease COVID-19, its essential for businesses to operate remotely as FWAs response to these challenges. The purpose is to focus on explaining how FWAs induce affective commitment as well as help in achieving work-life enrichment. For this, we proposed a theoretical framework hypothesizing that FWAs reduce work-life conflicts as well as make employees more engaged. The effect of FWAs on these two is also complemented by better time planning. Reduction of conflicts and enhanced engagement would, in turn, increase affective organizational commitment and work-life enrichment. Empirical significance was calculated by performing a survey using a questionnaire to collect data from 300 service sector employees in Pakistan. We determined our results by using structural equation modeling. The results suggested that FWAs are significantly and positively related to affective organizational commitment, engagement, and work-life enrichment, whereas negatively and significantly affect work-life conflict. Moreover, engagement also positively affects enrichment and affective commitment. Surprisingly, work-life conflict seems to positively affect work-life enrichment. Time planning seems to negatively complement the effect of FWAs on work-life conflict whereas, positively affect engagement. This study concludes that positive outcomes are generated by simply providing FWAs and more friendly policies whereby increasing effectiveness and ensuring business success continuity.
The Use of English Collocations in Written Translation – A Case of University English-Majored Students
Authors: Nguyen Trang Huynh , Anh Khau Hoang , Khanh Truong Nhut
Published: November 2020

The current study attempted to investigate English collocations used in written translation among fourth-year English majors at a university. The participants included forty-one fourth-year English-majored students and three translation teachers who are teaching English – Vietnamese translation courses in the university. To gather data, the researchers used two instruments: a test of English collocations including five types of collocations: an adjective going with a noun, a verb going with a noun, a noun going with a verb, a noun going with a noun and a verb going with an adverb. After data analysis, it revealed that just slightly over half of the student participants were able to find the correct collocations in written translation. Furthermore, a noun going with a verb and a noun going with a noun are the two main lexical errors made by most of the students. The interview was also used to seek translation teachers’ perspectives on students’ ability to translate texts in general and strategies of translation in particular. They perceived that most of their students were not aware of collocations in written translation and still had difficulties in both grammatical and lexical collocations. Finally, some recommendations on improving English collocations in written translation were also made based on these findings.
Lateral drift of reinforced concrete structures subjected to strong ground motion
Authors: Sozen Mete A.
Published: November 2020

A simplified method is described for estimating lateral drift of reinforced concrete structures subjected to strong earthquake motion. The method is modeled after spectral-response analysis with simplifications based on observed characteristics of nonlinear dynamic response of reinforced concrete structures. Its application is limited to the types of structures and ground motions considered in its development. However, the method can be readily calibrated for other types of structures or modified for different foundation conditions.
Pilots in de jeugdbescherming, een motor voor reflectie, vragen en innovatie
Authors: Helmich W.
Published: November 2020

Pilots in de jeugdbescherming, een motor voor reflectie, vragen en innovatie

Het stelsel van jeugdbescherming krijgt veel aandacht. In dit artikel wordt specifiek stilgestaan bij innovatie, de totstandkoming hiervan en hoe deze innovatie leidt tot overwegingen voor een volgende stap richting de toekomst van jeugd- en gezinsbescherming.
Desafios no Ensino a Distância: Soluções Computacionais para a Aprendizagem Colaborativa com Computação Afetiva
Authors: Oliveira Leonam , Oliveira Carolina Moreira , Oliveira Leander , Pimentel Andrey
Published: November 2020

A computação afetiva tem auxiliado a aprendizagem colaborativa no contexto educacional presencial, sendo muitas vezes necessário a utilização de recursos computacionais que não estão disponíveis no ensino a distância. Levando em conta o aumento constante de matrículas nesta modalidade, é importante propor soluções computacionais simples para o ensino a distância.
Desafios da Robótica Educacional Acessível e Inclusiva no Brasil
Authors: Batista Esteic Janaina Santos , Jr. Amaury Castro
Published: November 2020

Este resumo apresenta o desafio sobre o uso e desenvolvimento de ferramentas de programação e robótica com interfaces acessíveis ao público de crianças e jovens com necessidades especiais. Estas ferramentas promovem o desenvolvimento de competências requeridas para as profissões do futuro como: trabalho em equipe, raciocínio lógico e resolução de problemas, englobados no Pensamento Computacional. Desta forma, é necessário uma discussão e avanço da robótica e programação na educação especial, para que estas tenham a oportunidade de desenvolver estas habilidades para que possam estar aptas para o novo mercado de trabalho.
xGroupware: Supporting Collaborative Cross-Reality Environments using Multi-Agents System
Authors: Vega Katia Fabiola Cánepa , Cardador Débora , Fuks Hugo , Lucena Carlos
Published: November 2020

This paper presents xGroupware, a cross-reality meetingware that coordinates some activities to support remote workgroup. xGroupware was developed based on a multiagent system architecture that integrates different technologies for enabling message exchange between virtual and real worlds users using wearable computers.
Guidelines for Learning : Using 3D Interactive Systems for Education and Training
Authors: Schofield Damian
Published: November 2020

Advanced 3D virtual environment technology, similar to that used by the film and computer games industry can allow educational developers to rapidly create realistic 3D, virtual environments. This technology has been used to generate a range of interactive learning environments across a broad spectrum of industries and educational application areas. Virtual Reality (VR) simulators represent a powerful tool for learning and teaching. The idea is not new. Flight simulators have been used for decades to train pilots for both commercial and military aviation. These systems have advanced to a point that they are integral to both the design and the operation of modern aircraft [1, 2]. There are a number of lessons that can be learned from other industries that have successfully utilised virtual training and learning systems for a number of years. Generic rules of thumb regarding the specification, development, application and operation of these learning environments can be garnered from other industrial training systems and examined in an educational context [3, 4, 5]. This paper will introduce a virtual learning environment which has been developed by the authors. During the implementation of this, and other, visual learning environments a number of complex operational problems have been encountered, these have required a number of innovative solutions and management procedures to be developed. The paper will also discuss the implementation of these systems and extrapolate the lessons learnt into general guidelines to be considered for the development of VR based educational learning resources. These guidelines will then be discussed in the context of the development of ViRILE (Virtual Reality Interactive Learning Environment). This software is designed for use by undergraduate chemical engineers and simulates the configuration and operation of a polymerisation plant.
The Virtual Printshop: A case study on using Virtual Reality in early stages of user-centered product design
Authors: Thalen Jos , Van der Voort Mascha
Published: November 2020

In the early stages of a product development process (PDP), VR can facilitate communication between designers and product end-users to improve the quality of feedback that user provide to designers. While various forms of VR can already be found in the PDP, they primarily target designers, rather than designers and end-users. Furthermore, available tools and toolkits do not match the skills and requirements of designers in early stages of the PDP. The current paper presents an approach that first identifies how to effectively support early stage design activities (referred to as the application) and subsequently provides designers with tools to realize this application themselves. The approach is implemented in an industrial case study involving practitioners from a multinational manufacturer of printing solutions for professional markets. The Virtual Printshop resulting from this case study provides an evaluation platform for various types of early stage product evaluations. A concluding generalization of the cases study results shows that the application can be translated to several other design domains. Furthermore, it was found that there are similarities in how these different design domains integrate VR design tools with their existing tool chains.
Interactive Virtual Terrain Generation using Augmented Reality Markers
Authors: Dembogurski Renan Augusto , Dembogurski Bruno José , De Souza Filho José Luiz Ribeiro , Sad Dhiego Oliveira , Silva Rodrigo De Souza , Vieira Marcelo Bernardes
Published: November 2020

This paper presents an application that allows the generation of virtual terrains interactively, using augmented reality markers. This application also allows the user to navigate in the generated virtual environment. To demonstrate how the process is done, a terrain generation scenario was chosen. Virtual objects were augmented using markers and the detection is done through the ARToolKit framework. A particle system was used to simulate deformation to better incorporate the needs of terrain generation. The deformation itself follows an interparticle force between the particles attached to a movable physical marker and the particles attached to a fixed multi-marker representing the mesh. A viscous force is also used to generate a plastic material effect ensuring permanent deformation. The resulting application although conceptually simple and easy to use, can produce an immersive output environment that the user can freely navigate.
Development of an Interface to a Spacecraft Simulator empowered by Virtual Reality
Authors: Cerqueira Christopher Shneider , Dos Santos Walter Abrahão , Ambrosio Ana Maria
Published: November 2020

Due to its large territory, Brazil relies on space systems to perform a myriad of supporting activities. Space systems design requires strong modeling and simulations techniques for achieving high performance. This article describes the development of a goal-driven user interface (UI) for spacecraft distributed simulations using a service oriented paradigm and supporting different space missions. From usability problems with traditional simulators UIs, described by satellite subsystem design engineers, this work proposes three dimensional visualization, natural interaction techniques, virtual and augmented reality as well as interaction with touch-screen and gesture recognitions. This research uses an open source C/C++ toolkit, designed to provide interactivity, networking and scripting capabilities for simulator developers, this facilitates in providing specific input or output driver engines. Finally, some further developments are described for future work.
Performance Evaluation of an xSight 3120 HMD and Usability Analysis of the Phantom Omni in a Thoracocentesis Simulation
Authors: Correa Ellen dos Santos , Trenhago Paulo Roberto , Oliveira Thiago Eustáquio , De Oliveira Jauvane Cavalcante
Published: November 2020

This work describes the development of a virtual-reality-based medical training simulation. The system is composed of 3D models of a surgery room, a virtual patient (with the involved internal structures), as well as the software components that implements a thoracocentesis training procedure. This work goes on to evaluate the performance of a xSight 3120 HMD, as well as a usability test of a Phantom Omni to perform the medical procedure. Such usability analysis was drawn out of interviews with volunteers who used the system. The evaluated criteria included the time to complete the task, success rate and user complaints, such as HMD visual discomfort and arm fatigue while using the Phantom Omni.
Comparison of Acceleration Data Structures for High Quality Fast Reflections of Static and Deformable Models in Walkthrough Animations
Authors: Macedo Daniel V , Rodrigues Maria Andréia F
Published: November 2020

In order to render realistic images, the reflectance of surfaces must be simulated accurately. Generally, the ray tracing rendering technique is used to make a material reflect its surroundings, since it represents with great fidelity the behavior of light. However, ray tracing is still a very costly algorithm, so far mostly indicated in offline rendering scenarios. This situation is even more challenging for scenes containing 3D deformable meshes, since their geometry and, thus, the acceleration structures used, need to be updated in each frame of the animation. In this paper, we present an extended version of our hybrid algorithm that combines rasterization and a pure ray tracing through the NVIDIA OptiX to render high quality fast reflections, including scenes with deformable models. Additionally, we analyze and compare the performances of different NVIDIA OptiX acceleration data structures for generating reflections of static and deformable models in walkthrough animations. The results show that NVIDIA OptiX acceleration structures reach high frames per second for static objects. However, there is a performance decay in terms of frames per second when dealing with deformable models, since it becomes necessary to update the acceleration structures to cope with changing geometry, but even under these restrictions, we were able to achieve interactive frame rates.
Constructing meanings for formal use of mobile communication applications in educational contexts
Authors: Menezes Ewerton Martins de , Hornong Heiko Horst , Baranauskas Maria Cecília Calani
Published: November 2020

Mobile communication applications such as WhatsApp, Facebook, and Twitter, are already present in educational contexts, although their use is generally restricted to the original purpose of informal communication. In this paper, we investigate their potential to promote interaction in formal communication processes, exploring the meaning evolution of WhatsApp use in an undergraduate class setting. Based on an Organizational Semiotic analysis, we proposed a system to enable students to perform preparatory pre-class activities with WhatsApp exchanging commands, text and multimedia messages. Our analysis of the system use suggests that it is feasible and effective to appropriate mobile communication applications which students are already familiar with and use them in formal educational contexts.
A serious game for virtual rehabilitation: evaluation with patients and physiotherapists
Authors: Funabashi Amanda Maria Martins , Aranha Renan Vinícius , Silva Talita Dias , Monteiro Carlos , Silva Willian Severino , Nunes Fátima
Published: November 2020

Games can make training procedures more engaging for patients. Considering the complexity of the process for upper limb function rehabilitation, this paper presents the development and an initial evaluation of the AGaR – a serious game with virtual reality and natural interaction, both to aid patients to execute repetitive exercises and to aid physiotherapists to follow the rehabilitation process. Additionally, we obtain and analyze data about patients’ engagement as a differential in relation to others games developed for similar goals. In this game, the patient has to associate two different images with complementary meanings, using a movement sensor to drag the image to the target. We conducted an experiment with physiotherapists in order to evaluate the feasibility of applying the game in real therapies. We also conducted an initial experiment with patients. The results show that physiotherapists believe that the game is effective and might be used during therapies. From the experiments with patientss, we obtained that the number of wrong associations made by them varies according to patient, with no standard found. The engagement tends to increase during use of the game, throughout the rounds.
Exploring how experienced and unexperienced designers use and evaluate a usability-oriented interaction and navigation model
Authors: Marques Anna Beatriz , Barbosa Simone Diniz Junqueira , Conte Tayana
Published: November 2020

Representing quality aspects in models used in the design of interactive systems can support to design solutions with higher quality of use. However, the quality of the designed solutions can be influenced by the designers’ experience and by the models’ expressiveness for representing the quality aspects. Recently, we proposed USINN (USability-oriented INteraction and Navigation model) to express usability mechanisms in interaction and navigation modeling solutions. In this paper, we present an experimental study conducted with students, characterized as experienced and unexperienced designers, in order to investigate how is USINN adopted and evaluated by designers with different levels of experience in the software industry. The results indicated that the quality of artifacts produced by experienced and unexperienced designers was similar. However, the unexperienced designers indicated higher intention to adopt USINN in the software industry.
The Effect of High Intensity Interval Training (HIIT) and Crocin Consumption on Doxorubicin-Induced Apoptotic Indices in the Muscle Tissue of Rats
Authors: Eydivandi Kavous , Azarbayjani Mohammad Ali , Farzanegi Parvin
Published: November 2020

Background: Apoptosis is one of the main means to remove undesirable cells that occurs in the eucaryotic and even procaryotic organisms. Objectives: This study aimed to examine the effect of 8 weeks of high-intensity interval training (HIIT) and crocin consumption on apoptotic factors in the soleus muscle of male rats exposed to doxorubicin. Methods: sixty male rats were selected and divided into five groups: 1) doxorbicin- control, 2) training, 3) crocin, 4) training + crocin, and 5) healthy control. Groups 1 to 4 received 2 mg/kg doxorubicin intraperitoneally; Groups 3 and 4 received daily 10 mg/kg crocin, and groups 2 and 5 received HIIT including high-intensity interval repetitions (80 to 90% of maximum speed) and low-intensity interval repetitions (30 to 40% of maximum speed) at two-minute alternations for eight weeks and for five days each week. Results: Doxorubicin had a significant effect on increasing Bax and caspase-3 and decreasing Bcl-2 (P ≤ 0.05). However, training had a significant effect on reducing Bax and increasing Bcl-2 (P ≤ 0.05). Crocin consumption had a significant effect on decreasing Bax and caspase-3 and increasing Bcl-2 (P ≤ 0.05). In addition, training and crocin consumption had interactive effects on decreasing Bax and increasing Bcl-2 (P ≤ 0.05). Conclusions: It appears that the combination of HIIT with crocin extract can be used to increase the expression of the Bcl-2 protein gene as an anti-apoptotic factor and decrease the expression of Bax gene as a stimulating factor in the soleus muscle of male rats exposed to doxorubicin.
The Efficacy of a Web-Based Logbook in the Monitoring of Educational Activities of Emergency Medicine Residents
Authors: Karimialavijeh Ehsan , Seyedhosseini Javad , Labaf Ali , Ashrafi Maziar , Mohammadrezaei Narges
Published: November 2020

Background: Regularly monitoring of educational activities is of undisputed importance in residency training programs. Various educational and training activities can be recorded in a logbook, including giving a lecture, participating in training courses, morning reports, providing particular procedures and skills. Objectives: The current study aimed to compare a newly launched web-based logbook to a paper-based logbook to identify potential strengths and weaknesses. Methods: Emergency medicine residents of postgraduate year 1 (PGY1) and 2 (PGY2) and faculty members participated in the present study. Electronically collected data from February-April 2014 were compared to those of paper logbooks for the same period in the previous year. Furthermore, to evaluate the perspectives of both students and faculty members on the web-based logbook, a survey was implemented. Results: In total 47 residents recorded their activities in the web-based logbook. For the same period in the previous year, logbooks of 40 residents were available. The frequency of work shifts in paper and web-based logbook was 668 and 1020, respectively (P = 0.4). However, a significant difference was observed concerning the work shifts recorded in the logbook and those confirmed by a faculty member [416 (62.3%) in the paper logbook and 945 (92.7%) in the web-based logbook, P value = 0.05]. Also, the frequency of unconfirmed procedures, review of medical cases, morning reports, rotations, and direct observation of procedural skills were significantly lower in the web-based logbook (P value = 0.0001). Based on the results of the survey, 55.55% of faculty members and 66.66% of residents reported the effectiveness of the web-based logbook. Conclusions: This study demonstrated the potential of web-based logbooks to improve recording activities of residents and assisting faculty members to precisely monitor their activities.
Awfulize To the Core No More
Authors: Lucero Aeyanna ,   National Philosophical Counseling Association
Published: November 2020

This paper demonstrates how philosophical works can be utilized in order to combat irrational rules of reasoning, namely Demanding Perfection and Awfulizing, associated with real-life thoughts and experiences of the author as a student.
Stop, reflect, replace: Renovating our foundation for inclusive participation
Authors: Iglesias Aubrey
Published: November 2020

As in many academic libraries all over the country, attracting and retaining people of color has been a continuous, uphill battle.”“It is a troubling reality that our current librarian ranks do not represent the communities served by libraries.”Sadly, both of these statements, from 2001 and 2003, still hold true today. Sustained attempts to lower barriers for BIPOC (Black, Indigenous, and People of Color), such as through residency programs, have not resulted in their long-term retention, and white librarians still make up the vast majority of degreed librarians. Now is the time to stop this cycle and change the narrative in academic librarianship.
What is in those compact shelves? Auditing and quantifying a government documents collection
Authors: Kirk Jennifer
Published: November 2020

As academic libraries evolve, the complexity and breadth of federal government documents collections pose challenges to librarians. These materials are often shelved under the Superintendent of Documents classification system (SuDoc) and, depending on the library, may be only partially cataloged. The collection’s monolithic nature may complicate projects to catalog, promote, move, or deaccession materials. Using a collection inventory to define mini collections by SuDoc area helps quantify these large collections for academic librarians. The collection inventory system described in this article can be customized and applied beyond the scope of government information. Its approach informs how we assess and build collections, how we inherit collections, and how we work within established systems.
Continuing a love affair after a separation: Ways to promote books for World Book and Copyright Day
Authors: Frye Julie Marie , Carter Sarah , Hosbach Ashley , Nay Leanne
Published: November 2020

Perhaps for the first time since the founding of American libraries, most librarians were divorced from their physical collections as a result of the COVID-19 pandemic. Although college and research libraries are negotiating various service models, including remote, hybrid, and online, librarians continue to serve their communities while access to physical spaces and materials is limited. While some suggest that libraries are better positioned to provide virtual services than ever before, communities continue to ask for physical books.
Internet Reviews
Authors: Roberts Joni R. , Drost Carol A.
Published: November 2020

The Annie E Casey FoundationDiscovering Literature, British LibraryOutRIght Action International
Pravo u Srbiji moderne epohe - Teodor Filipović (Boža Grujović) Sremac (Rumljanin) prvi pisac zakona u Karađorđevoj Srbiji
Authors: Fajfrić Željko
Published: November 2020

Teodor Filipović (Grujović) jeste jedan od prvih koji je začeo ideju prirodnog prava u Srbiji. Njegov rad teži da teorijski i zasnuje i opravda državu. Danas je njegova ideja možda zastarela budući da mu koncept počiva na stanovištu racionalizma i prirodnog prava XVIII veka nalazeći izvor suvereniteta vladarske vlasti u pravnoj normi kao takvoj. No, ova ideja će ostati i za kasnije godine. U Miloševoj Srbiji na njegovu ideju će ce direktno nadograditi Dimitrije Davidović (profesor prirodnog prava na Liceju od 1838. godine)…
Regulation of active and passive voting right in the European Union
Authors: Tripković Boško
Published: November 2020

U radu su obrađena najvažnija pitanja regulisanja aktivnog i pasivnog biračkog prava na nivou Evropske unije. Detaljno su prikazana rešenja koja sadrže propisi Evropske unije, a naročito dve direktive Evropskog saveta koje uređuju biračko pravo građana Evropske unije. Takođe, ukazano je na razlike među direktivama koje proizilaze iz različite prirode izbora za Evropski parlament i lokalnih izbora. Na kraju, izloženi su osnovni principi koji su zajednički za obe direktive.
Theft of electricity as a specific criminal offence
Authors: Stojković Vesna
Published: November 2020

The level of unauthorized (illegal) consumption of electricity (theft of electricity) has seriously increased on the state territory of Serbia and Montenegro. A crucial step in the struggle against the theft of electricity would be to bring charges against the offender of this crime. The statutory provisions offer offender mechanisms of repression but unfortunately in practice court judgments are very mils. Usually, those are the suspended sentences or minor financial punishments so that the offenders are practically more encouraged than sentenced. In our opinion it is necessary to change the court practice and to introduce severe punishment for this kind of crime.