bluuebunny/crossref_metadata_2025 huggingface dataset:
Anti-vibration - stabilizing drill bottomhole assembly for «Perfobore» technical system
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Lyagov A.V. , Lyagov I.A. ,   LLC «Perfobore», Moscow, Russia, Suleymanov I.N. ,   Ufa State Petroleum Technological University, Ufa, Russia
Published: December 2020

The article discusses the method of bottomhole assembly (BHA) for the «Perfobore» technical system, investigated as a complex of elastic-viscous working elements - coupled oscillators located in a dynamically disturbed section of the assembly. The length of the section is determined using the group velocity of propagation of the energy of a packet of quasi-harmonic waves differing from each other in phase and frequency, with prevailing natural frequencies, which are calculated after statistical processing of the obtained dynamograms of phase trajectories. Then, the working elements of the technical system are assembled with selected natural frequencies and taking into account various bending and torsional stiffnesses of the component assemblies (oscillators), and the damping properties of the assemblies are enhanced by the additional placement of hydromechanical axial load regulators with a variable vibration isolation coefficient in the calculated places of the «motion stability nodes».
Oil production facilities management improving using the analogy method
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Mukhametshin V.V.
Published: December 2020

For the conditions of an oil fields group characterized by an insufficiently high degree of oil reserves recovery, an algorithm for objects identifying using parameters characterizing the objects’ geological structure and having a predominant effect on the oil recovery factor is proposed. The proposed algorithm allows us to substantiate and use the analogy method to improve the oil production facilities management efficiency by targeted selection of the information about the objects and processes occurring in them, removing uncertainties in low density conditions, the emergence of real-time decision-making capabilities, determination of optimal ways of current problems solving, reducing the probability of erroneous decisions making, justifying the trend towards the goals achieving.
Substantiation of application of the technology of acid hydraulic facing insea shelfgas condensate carbonate reservoirs
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Rabaev R.U. , Bakhtizin R.N. ,   Ufa State Petroleum Technological University, Ufa, Russia, Sultanov S.Kh. ,   Ufa State Petroleum Technological University, Ufa, Russia, Smurygin V.I. ,   SUE RK «Chernomorneftegaz», Simferopol, Russia, Blinov S.A. ,   LLC «Kresol-nefteService», Ufa, Russia, Bakishev T.B. ,   LLC «Kresol-nefteService», Ufa, Russia
Published: December 2020

The article discusses the problems of effective application of acid hydraulic fracturing (HF) technologies in carbonate reservoirs. The optimal technology of acid fracturing has been substantiated, adapted to the geological and production conditions of the development of productive deposits and mining equipment of a gas condensate field of the sea shelf. The results of the design and calculation of the predicted flow rate for specific geological and production conditions of candidate wells are presented.
Experimental study of pipeline movements in permafrost soils
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Sultanmagomedov T.S. , Bakhtizin R.N. , Sultanmagomedov S.M.
Published: December 2020

In article present the developed methodology will allow monitoring pipeline displacements under changes in operating conditions, as well as simulating unfavorable processes (thawing of soil, formation of taliks, violation of thermal insulation). The planning of the experiment was carried out to obtain the calculated mechanical characteristics of the soil, depending on the temperature and humidity, used to calculate the stress-strain state of the pipeline. A mathematical computer model has been developed to determine the radius and temperature field of the thawing halo around the pipeline. A template for displaying experimental data for their use in the finite element analysis of pipeline displacements during soil thawing is presented.
Acrylic polymers for conditions of weakly acid conversion to resins, complex syntheses
Authors:   Academician A.M.Guliyev Institute of Chemistry of Additives, ANAS, Baku, Babayev E.R. , Safiullina I.I. ,   Bashkir State Agrarian University, Ufa, Russia, Karimov E.Kh. ,   Ufa State Petroleum Technological University, Ufa, Russia, Mukhametzyanov I.Z. ,   Ufa State Petroleum Technological University, Ufa, Russia, Bakhtina A.Yu. ,   Ufa State Petroleum Technological University, Ufa, Russia, Movsumzade E.M. ,   Ufa State Petroleum Technological University, Ufa, Russia
Published: December 2020

The paper presents materials on the conversion of acrylic monomers to acrylic polymers. Similarly, polymers and copolymers obtained from acrylonitrile were prepared. On the basis of the results of quantum chemical calculations, the parameters of polymer and copolymer materials were established, which will make it possible to evaluate the possibilities of complexes of acrylonitrile polymers for the production of membranes.
Concept for managing constraints of an oil field development project
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Burenina I.V. , Gerasimova M.V. ,   Ufa State Petroleum Technological University, Ufa, Russia, Khalikova M.A. ,   Ufa State Petroleum Technological University, Ufa, Russia, Soloveva I.A. ,   Ufa State Petroleum Technological University, Ufa, Russia, Avdeeva L.A. ,   Ufa State Petroleum Technological University, Ufa, Russia
Published: December 2020

The article is devoted to the identification and evaluation of specific design constraints in the implementation of oil field development projects. A sequence of stages for identifying, evaluating, and managing project constraints is formed. The characteristic of the levels of manageability of project constraints is given and the actions of the manager for each level are defined. A method is proposed for determining the ranks of restrictions, taking into account the probability of occurrence of a restriction and the degree of its influence on the project result. The system of values of the point scale for assessing the levels of manageability of project restrictions is defined. Relationship established of the riskiness of the project and the level of manageability of the design constraints.
Free convective of a linear heterogeneous liquid in a square cavity at side heating
Authors:   Mavlutov Institute of Mechanics, Ufa, Russia, Moiseev K.V. ,   Ufa State Petroleum Technological University, Ufa, Russia, Kuleshov V.S. ,   Mavlutov Institute of Mechanics, Ufa, Russia, Bakhtizin R.N. ,   Ufa State Petroleum Technological University, Ufa, Russia
Published: December 2020

In this work the problem of free convection of the Newtonian poorly stratified liquid in the cell warmed up from left and cooled from right with the heat-insulated horizontal boarders is presented. Liquid with small concentration of salt and initial linear stratification on cell height is considered. The model of double diffusion in a Boussinesq approximation is applied to model the process. The problem is solved both in two - and three-dimensional statement by means of a control volume method and a SIMPLE algorithm. It is shown that vortex structures at the layered mode of convection have quasi-two-dimensional character.
FOOD SEARCH AND CONSUMPTION AND ITS RELATION TO AGGRESSIVE RESPONSES IN PIGEONS.
Authors: López Martha Elisa , Zamora Abel Javier , Cabrera Rosalva
Published: December 2020

The aim of this experiment was to describe the relation between the emission and reception of aggressive responses, as well as the occurrence of food discovery and consumption responses in a social foraging situation in which the spatial distribution of food was varied. During five sessions, groups of pigeons (n=5) were exposed to a wood platform with 12 sealed containers, of which 4 contained food (full). For the Proximal Group the full containers were spatially adjacent to one another and for the Distal Group the containers were spatially separated. In each group only one subject discovered food consistently, but all of the members consumed food. The aggressive responses were higher in subjects that consumed less food and the reception of aggressive responses was higher for subjects that consumed more food. The data were analyzed in terms of the Hawk/Dove game described by Sirot (2000).
The Impact of Noninterest Income on the Profitability of Commercial Banks in VietNam: Evidence of Non-Linear Relationship
Authors: Nguyen Khanh Ngoc
Published: December 2020

This paper uses the Generalized Method Of Moments (GMM) to analyze the impact of noninterest income on the profitability of 28 Vietnamese commercial banks in the period from 2010 to 2018. At the same time, the Threshold Regression Model is applied on a panel data to evaluate whether or not there is a non-linear relationship between the noninterest income ratio and bank’s profitability. The results have shown that the optimal diversification benefit can be attained by reaching a certain level of non-interest income proportion. The findings of the study are: (1) The existence of two thresholds shows that there is non-linear relationship, confirming the non-linear relationship between the noninterest income ratio (NII) and profitability (ROA); (2) The noninterest income ratio impacts negatively on profitability (ROA) when NII (≤44.16% and ≥ 46.62%), when the noninterest income ratio is between 44.16% and 46.12% the relationship is positive. The noninterest income ratio ranging from 44.16% to 46.62% is called optimal when this ratio is in a positive correlation with profitability, which means that Vietnamese commercial banks can try to increase their profits by increasing NII and maintaining that level to get exploiting their maximum level of diversification from noncredit income.
La conservació-restauració del Castellot de Bolvir. La interdisciplinarietat de l’arqueologia
Authors: Eguiluz Maestro Delia , Morell Hom Alba
Published: December 2020

El treball interdisciplinari és, avui dia, un element plenament integrat dins de qualsevol recerca arqueològica. I dins d’aquesta gran disciplina ens trobem amb un dels elements més importants i indispensables, com és la conservació-restauració, ja que tant garanteix la preservació de tot el conjunt de béns que ens arriben del passat, com permet el seu estudi i difusió. En aquest sentit, aquest article se centra en l’anàlisi dels diferents tipus d’intervencions de conservació i restauració que durant anys han ajudat a fer que el jaciment del Castellot de Bolvir (Girona) sigui un referent arqueològic a la Cerdanya.
Forest in Karst Mountain Sinkhole of Southeastern China Provides Refugium for the Preservation of Bryophyte Diversity
Authors: Li Xiaofang , Zhang Zhaohui , Wang Zhihui , Shi Kuangzheng
Published: December 2020

The negative landform of sinkholes provides belowground level refugia for a high diversity of forest species compared to the forests on the surface of surrounding karst plateaus in southeastern China. Bryophyte diversity in sinkhole forests is also likely to be high. In this study, bryophytes of an underground forest sinkhole (UFS), and two forests (Forest Karst Mountain 1; FKM1) and (Forest Karst Mountain 2; FKM2) on the surface of the karst plateau were compared to understand the role of the sinkhole forest in the conservation of bryophyte diversity and the relationships between bryophyte diversity, environmental factors, and soil nutrients. Significantly more bryophyte taxa were recorded from the sinkhole forest (71 taxa, 36 genera, 23 families) than those in the forest on the plateau surface, which was the closest to the sinkhole (FKM1; 29 bryophyte taxa, 16 genera, 12 families), and even fewer bryophytes were found in the forest more distant to the sinkhole (FKM2; 22 taxa, 17 genera, eight families). Twenty-four liverwort taxa were collected from the sinkhole forest, two from the closest surface forest (FKM1) and none from the furthest surface forest (FKM2). Ninety-three percent of the bryophytes in karst mountain sinkhole were not found on surface forest. The diversity index trend was as follows: UFS > FKM1 > FKM2, and the evenness index trend was in the opposite direction as follows: UFS < FKM1 < FKM2. The beta diversity showed that the Jaccard index among the three forests was 0–0.25, reflecting a huge difference between the sinkhole forest and the two surface forests. Canonical correspondence analysis showed that light was the most important factor affecting the distribution of bryophytes in the sinkhole forest, while temperature and humidity were key factors for the distribution of bryophytes in the two surface forests. Further, soil parameters, namely, soil organic carbon, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen, and available phosphorus changed gradually from UFS to FKM1 and to FKM2. The sinkhole forest, located in a landform with the unique negative topography enclosed by cliffs, and with a complex microenvironment, provides a natural refuge for bryophyte species in areas where forests have been negatively impacted by karst rocky desertification.
A generic model for integrating ESD in a university course – complementing a textbook with contemporary material
Authors: Boström Gert-Olof
Published: December 2020

A large number of stakeholders are demanding more education for sustainable development (ESD) at Swedish universities, among them students who are expecting to find ESD in their courses. The aim of the article is to present a model for how to develop a course to include ESD when no updated textbooks are yet available and Bloom’s taxonomy is used for demonstrating the high level of learning that can be achieved without any syllabus changes. The setting for the case study and model development was a course in service marketing with a diverse group of students in terms of their background and education, at Umeå School of Business, Economics, and Statistics at Umeå University in Sweden. The course took place in the middle of the education program. Techniques such as lectures, guest lectures, assignments based on the theoretical textbook content, and a term paper were used to incorporate ESD into the course in order to accomplish possibilities for generic use. A challenge in designing ESD was the lack of knowledge about the students’ initial understanding of sustainability. The model was designed to take this into account. The design of assignments showed clear possibilities of achieving high levels of learning in terms of Bloom’s taxonomy, including analysis, synthesis and evaluation. The model is also an endeavor to encourage university teachers to introduce elements of ESD in their usual courses.
40 - anniversary (1980-2020) of the establishment of the Oncological Section of the Polish Society of Otorhinolaryngologists and Head and Neck Surgeons
Authors: Bruzgielewicz Antoni , Osuch-Wójcikiewicz Ewa , Kaczmarczyk Dariusz , Niemczyk Kazimierz
Published: December 2020

The Oncology Section of the Polish Society of Otorhinolaryngologists Head and Neck Surgeons is one of the oldest sections of the PSOHNS, it was established by a resolution of the General Meeting of the PSOHNS in Poznań on 22nd September 1980 upon request of prof. Stanisław Iwankiewicz, who became its Chairman. On 12th December 1981, the 1st Conference of the Section was held in Wrocław, laryngeal cancer was the topic. During its 40th anniversary, the Oncology Section organized 3 conferences and 17 symposia, bringing pride to the entire Society, and promoted the latest scientific trends in the approach to head and neck cancer. With the development of basic sciences, genetic and molecular tests as well as new diagnostic and therapeutic methods, the topics of the meetings gradually expanded to include new sections and issues in ENT oncology.
AnemiaAR: Serious Game de Realidade Aumentada para o Ensino de Hematologia
Authors: Bianchi Isabela , Zanatta Alexandre Lazaretti , Rieder Rafael
Published: December 2020

Este trabalho tem como objetivo apresentar o desenvolvimento de um serious game de Realidade Aumentada para o ensino de hematologia, capaz de auxiliar alunos e professores na visualização e apresentação de conceitos de anemia. O processo de criação conta com apoio de equipe multidisciplinar, e aplica recursos da game engine Unity e do óculos Microsoft HoloLens. O artigo destaca também a motivação, os trabalhos relacionados e os resultados preliminares do uso da aplicação por acadêmicos de um curso de Medicina.
Avaliação automática de habilidades sensório-motoras em simulador odontológico
Authors: Sallaberry Lucas , Tori Romero , Nunes Fatima
Published: December 2020

Simuladores em realidade virtual voltados para a saúde possibilitam o treinamento de estudantes antes do primeiro contato com o paciente, de maneira segura e sem gasto de material. Dados coletados durante a execução do treinamento favorecem a implementação de sistemas de avaliação automática, que podem tanto fornecer retorno de desempenho para o aluno durante o treino, sem a necessidade de um instrutor presente, quanto auxiliar o professor durante avaliações. Estudos que utilizam aprendizado de máquina para realizar a avaliação de aprendizes em simuladores de realidade virtual com retorno háptico ainda são escassos na literatura. Este trabalho propõe a utilização de técnicas de aprendizado de máquina para definir um método de avaliação a fim de mensurar a aquisição de habilidades sensório-motoras de estudantes. O modelo será validado em um simulador de anestesia odontológica em realidade virtual. Dados de especialistas e alunos iniciantes e experientes foram coletados durante experimentos e serão utilizados para treinar o modelo. Possíveis métricas de desempenho e técnicas de avaliação foram levantadas em uma revisão sistemática da literatura.
Um framework para a adaptação de jogos sérios com Computação Afetiva e Computação de Personalidade
Authors: Aranha Renan Vinicius , Nunes Fátima
Published: December 2020

Atividades de treinamento, ensino-aprendizagem ou de reabilitação motora podem envolver grandes desafios para os usuários. Com o intuito de tornar tais procedimentos mais atrativos e envolventes, pesquisadores têm investigado o desenvolvimento de jogos sérios, cujos objetivos vão além do entretenimento, podendo envolver aquisição de conhecimento ou habilidades. Dentre as abordagens aplicáveis a esta finalidade, destaca-se a adaptação automática do jogo conforme as características do jogador. Neste contexto, este projeto propõe o desenvolvimento de um framework que possibilite o desenvolvimento de jogos sérios automaticamente adaptáveis, conforme o estado emocional e os traços de personalidade do usuário. Espera-se que a abordagem proposta não apenas auxilie o desenvolvimento de jogos desta natureza, como também possibilite a manutenção do nível de engajamento do jogador.
Gamificação e imersão como elementos de engajamento para simuladores: uma proposta de aplicação em realidade virtual para a Odontologia
Authors: Tori Allan , Tori Romero , Nunes Fatima
Published: December 2020

Os simuladores em realidade virtual são alternativas para ensinar técnicas das áreas da saúde, no entanto, podem falhar em manter o engajamento e motivação do aprendiz. Elementos importantes para engajamento como a gamificação, podem ser fundamentais para contornar essa falha. Aliado a isso, a imersão visual, favorecida pelo uso de dispositivos Headmounted display(HMD), que promovem a estereoscopia com amplitude do campo de visão e agência da cabeça, tem se mostrado eficaz no aprendizado em simuladores e serious games. Além da imersão visual, é possível inserir a imersão interativa, com o uso de rastreamento do olhar e das mãos, por meio da qual o aluno poderá interagir com o mundo virtual de forma mais ativa e natural. A contribuição deste trabalho será estudar a gamificação e imersão como elementos capazes de promover o engajamento em simuladores. Como estudo de caso, um simulador será gamificado para a área da odontologia, assim como elementos de imersão, que também serão acrescentados neste simulador.
Visual Behavior Modeling of Hazard Identification Assessment From Eye-Tracking Data
Authors: Da Silva Abner Cardoso , Raposo Alberto Barbosa , Franco Cesar Augusto Sierra
Published: December 2020

The easier access to virtual reality head-mounted displays have assisted the use of this technology on research. In parallel, the integration of those devices with eye-trackers enabled new perspectives of visual attention analysis in virtual environments. Different research and application fields found in such technologies a viable way to train and assess individuals by reproducing, with low cost, situations that are not so easily recreated in real life. In this context, our proposal aims to develop a model to measure characteristics of safety professional’s gaze behavior during the hazard detection process.
SIMAA: um simulador em realidade virtual para o adestramento de artilharia
Authors: Andrade Álan , Silva-Calpa Greis , Raposo Alberto Barbosa
Published: December 2020

Atualmente os simuladores de Artilharia têm ganhado grande visibilidade e importância, visto que oferecem uma nova forma à preparação e ao treinamento militar. Nesse cenário, os simuladores de Realidade Virtual (RV) se destacam porque possibilitam a imersão do usuário num ambiente virtual, onde pode atingir diferentes objetivos e treinamentos de situações reais. Entretanto, ainda encontram-se algumas dificuldades para o emprego de simuladores, principalmente as tecnologias adotadas que comprometem características de usabilidade, como discrepâncias em relação à realidade, além da falta de integração de subsistemas considerados essenciais, como observação e linha de fogo. Este trabalho visa identificar as limitações existentes nos simuladores de Artilharia, bem como os problemas de usabilidade, com o intuito de desenvolver um simulador em RV que supra tais limitações. Após seu desenvolvimento, o simulador será avaliado para identificar sua contribuição e viabilidade junto ao Grupo de Artilharia do Centro de Instrução Almirante Sylvio de Camargo, no Rio de Janeiro.
Avaliando a presença espacial e autopresença em um jogo baseado em Realidade Virtual
Authors: Silva Júlio Raphael de Oliveira , Machado Liliane
Published: December 2020

A sensação de presença está ligada intrinsecamente à realidade virtual e relaciona-se à capacidade de pertencimento do usuário ao ambiente. Esta sensação pode estar relacionada a diferentes aspectos como, por exemplo: a autopresença e presença espacial. Com isso, este trabalho tem como objetivo avaliar a presença espacial e autopresença em um jogo baseado em realidade virtual, desenvolvido para a conscientização da violência contra a mulher. O Caixa de Pandora é um serious games, que tem como objetivo conscientizar as pessoas sobre a violência contra a mulher. O jogo passou por um processo de redesign que utilizou realidade virtual com ambientes 360°. Com o desenvolvimento da aplicação foram realizados testes a fim de medir os aspectos da presença espacial e autopresença, comparando com a versão anterior do Caixa de Pandora para dispositivos moveis. Os resultados destacaram que os aspectos da presença tiveram melhores resultados, quando comparados à sua versão mobile.
Robot training in virtual environments using Reinforcement Learning techniques
Authors: Soares Natália Souza , Teixeira João Marcelo Xavier Natário , Teichrieb Veronica
Published: December 2020

In this work, we propose a framework to train a robot in a virtual environment using Reinforcement Learning (RL) techniques and thus facilitating the use of this type of approach in robotics. With our integrated solution for virtual training, it is possible to programmatically change the environment parameters, making it easy to implement domain randomization techniques on-the-fly. We conducted experiments with a TurtleBot 2i in an indoor navigation task with static obstacle avoidance using an RL algorithm called Proximal Policy Optimization (PPO). Our results show that even though the training did not use any real data, the trained model was able to generalize to different virtual environments and real-world scenes.
BricksAR: exploring the potential of augmented reality to inform assembly processes in construction
Authors: Caixeta João Pedro Andrade , De Araújo André Luís
Published: December 2020

The use of Augmented Reality (AR) systems in construction processes can represent an essential transformation in the communication between design and production. However, supposing that design-production translations can be obtained from several manufacturing methods (such as robotic, manual, modular, non-modular, and others), there are not enough studies that explored the potential uses of AR as an assistant for assembly operations. To tackle this problem, this ongoing research proposes to investigate the potentials of a low-cost and marker-based AR system to conduct different manual assembly processes. With the observational focus on aspects of precision and feasibility, we used scientific reductions based on modeling, simulation, and prototyping to provide inferences about the proposed tool's behavior in the real world.
Sistema de Telemonitoramento de Baixo Custo Usando IoT
Authors: Lisle Bianca , Teixeira João Marcelo Xavier Natário
Published: December 2020

O avanço da tecnologia proporcionou o surgimento do conceito de Internet das Coisas, que está cada vez mais presente no cotidiano de pessoas, empresas e indústrias. Produtos conectados oferecem uma experiência diferenciada ao usuário, que pode interagir e receber informações e funcionalidades adaptadas para seu consumo e padrão. Este trabalho propõe um sistema de monitoramento por vídeo utilizando Internet das Coisas, com foco no monitoramento de crianças para detecção de movimento. O projeto utiliza uma Raspberry Pi Zero W, uma cãmera e a biblioteca OpenCV para monitorar, processar e enviar o vídeo e suas informações para outros dispositivos conectados na mesma rede WiFi. Além disso, o projeto também visa trazer uma alternativa simples e barata para que pais possam monitorar crianças através de qualquer aparelho conectado.
DIVISOR: Real-time Drilling Visualizations for Virtual Reality
Authors: Porcino Thiago , Dórea Márcia , Barboza Diego , Oliveira Wesley , Romani Eric , Perin Fernando , Batista João
Published: December 2020

Well drilling is one of the most expensive tasks in oilfield exploration and development projects, especially in offshore assets. Thus, this activity is under constant evolution, given that any improvement in equipment or process can result in significant savings for the company operating that field. Meanwhile, virtual reality (VR) is one of the vital industry 4.0 trends to enable simulations and training safely for users. This work aims to provide a new tool to increase the drilling team’s efficiency by recreating drilling visualizations in a virtual environment. This environment enables training, evaluating, and simulating different scenarios in a well drilling and provide realtime insights to the engineers when coupled with other diagnostics tools.
NFCPlay: using NFC tags on VR mobile games to overcome the lack of input on VR Headsets
Authors: Dos Santos Ezequiel França , Ramos Reinaldo Augusto de Oliveira , Junior José Carlos Buesso
Published: December 2020

User input in Virtual Reality (VR) mobile games on the touch screen have been a problem in the gaming industry for many years. Some solutions using timers, waiting to look at something to act, have been proposed and used in several games. Some VR Headsets models had a magnetic button on the side. However, this button caused interference in the magnetometer and the GPS module, essential modules for developing games using VR. This work aims to present the use of an NFC tag (Near Field Communication) as an input mechanism for the player to overcome the lack of input on VR Headsets.
HandsOn e Compsi: parceria em projetos de Realidade Virtual para indústria, comércio e saúde
Authors: Oliveira Allan , Lopes Pedro , Santos Leonardo , Cruz Allan , Silva Daniel , Martins Luciamare
Published: December 2020

A empresa HandsOn, em parceria com o laboratório de pesquisa Compsi do Centro universitário Eurípides de Marília – Univem, foi criada para atender demandas de sistemas de interfaces computacionais. Ela originou para desenvolver um sistema de apoio a interação médico-paciente, mostrando de forma visual doenças e tratamentos. Em sequência ela se envolveu na área de construção civil, criando um sistema para lojas de construção usarem com seus clientes para montarem sua casa na Realidade Virtual. E por fim ela desenvolveu um sistema de treinamento para operadores de fábrica, que permite rápida construção de procedimentos de treinamentos por gestores. Como principal contribuição, a empresa publicou o framework de código aberto Project Team, que acelera o ciclo de desenvolvimento da Realidade Virtual.
Corollarium Technologies
Authors: Gnecco Bruno Barberi
Published: December 2020

Corollarium is a company that specializes in web and mobile development, image processing, virtual and augmented reality. Its expertise encompasses the full development process - from design to production to installation, aiming to offer customized solutions of the highest quality and lowest maintenance. This paper goes briefly over what we have been researching and creating over the last years.
MarineVerse enables more people to sail!
Authors: Tizuka Michelle Mayumi , Dziemidowicz Greg
Published: December 2020

MarineVerse wants to promote and share the sport of sailing with the world by providing sailing education, growing as a sailor, socializing, and having entertainment using virtual reality technology. Current VR sailing applications are designed for Valve Index, HTC Vive, Oculus Rift, and Oculus Quest, and flagship products are MarineVerse Cup and VR Regatta.
Psychometric Properties of Young’s Internet Addiction Test in Nigeria
Authors: Akpunne Bede Chinonye , Akinnawo Ebenezer Olutope , Alakija Oluseyi Abiodun , Kumuyi Daniel Oluwasanmi
Published: December 2020

Background: In 2018, the Nigerian Communication Commission affirmed that more than 100 million Nigerians made use of the Internet. A good percentage of internet usage is maladaptive. A valid, reliable, and socio-culturally sensitive assessment instrument is essential to study internet usage patterns in Nigeria. Young’s Internet Addiction test (IAT) has been validated in many countries, but not in Nigeria. Objectives: This study aimed to validate IAT to determine psychometric properties acceptable in a Nigerian population. Materials and Methods: A total of 184 Nigerian University undergraduates (77 males and 107 females), mean age = 20.5, were purposively drawn, and they responded to IAT, the Smartphone Addiction Scale-Short Version (SAS-SV), and the Bergen Facebook Addiction Scale (BFAS). Results: The Cronbach’s α of the six IAT factors ranged from 0.25 (anticipation) to 0.69 (salience). The observed overall Cronbach’s α coefficient of 0.79 was obtained for IAT. The corrected item-total correlations ranged from 0.73 to 0.84. The concurrent validity score was observed to be r = 0.54 between IAT and SAS-SV and r = 0.58 between IAT and BFAS. A significant positive correlation was equally observed between the IAT and BFAS factors, ranging from conflict (r = 0.322, P = 0.000) to relapse (r = 0.488, P = 0.000). The new norm determined for IAT in the Nigerian population was ≥ 38.5 for males and ≥ 40.8 for females. Conclusions: IAT is gender-sensitive and has acceptable psychometric properties for the Nigerian population.
Y Neslinin Örgüt Ortamındaki Davranış Farklılıklarının Analizi
Authors: ÇEMBERCİ Murat , SUDAK Melike Kıvanç , AŞÇI Saim , CİVELEK Mustafa Emre , ÖZ Sabri
Published: December 2020

Dijital Kuşak olarak bilinen Y neslinin son yıllarda örgütlerdeki etkinliği giderek artmaktadır. Birçok sektörde faaliyet gösteren farklı ölçeklerdeki örgütlerde yönetsel pozisyonlarda görev almaya başlamışlardır. Bu durum, örgüt içindeki Y neslinin diğerlerinden iş görme anlayışı açısından farklı olduklarına dair bir algıya sebep olmuştur. Bu araştırmada, öncelikle Y neslinin örgüt ortamında diğer çalışanlardan farklılaştığı boyutların belirlenmesi ve bu boyutların hangi yönde farklılaştıklarının analizi amaçlanmıştır. Yapılan analiz sonucunda, Y neslinin çoklu görev, sosyal medya kullanımı, takım çalışmasına yatkınlık, eğlenerek çalışma ve çalışan bağlılığı boyutlarında diğerlerinden farklı oldukları bilimsel olarak ispatlanmıştır.
Needles and Pins on the Scaffold: Francis Bacon and Giovan Battista della Porta on the Motions of the Human Soul and the Passions of the Lodestone
Authors: Kodera Sergius ,   Zeta Books
Published: December 2020

This article discusses the powers of the lodestone for two authors, Francis Bacon and Giovan Battista della Porta, relating their observations on magnetism and human emotions to the field of learned natural magic. It investigates some of Bacon’s and Porta’s remarks on experimental work with lodestones and the ways in which both authors translated the inexplicable powers of lodestones and magnetized iron into a series of principles that also served as a structure and explanation of human emotions (and vice versa). I suggest that at work here is not merely an anthropomorphic projection at nature, but also (and conversely) an interest in and fascination with the naturalization and mechanization of human emotions. My contribution examines passages from Bacon’s Advancement of Learning, the Novum organum, the Sylva sylvarum and his Essays; from Della Porta’s Magia naturalis (second edition 1589) and his comedy Sorella (1604). First, the insight that Bacon’s and Della Porta’s perception of magnetic movements have a strong common bias: the identification with human emotions. Both authors postulate not merely a close analogy, but a mutual convertibility between the two phenomena and with animal spirits. Second, this syn-optic approach is no one-way-street merely creating a characteristic perception of the phenomenon of magnetism: it also conditions the modes in which the human mind and emotions are perceived. Third, emotions—in particular love and hatred—are in principle as predictable as the movements of attraction and repulsion exercised by iron and lodestone.
Spinoza on Revealed Religion and the Uses of Fear
Authors: van Cauter Jo ,   Zeta Books
Published: December 2020

This paper argues that fear constitutes an important part of Spinoza’s redefined version of revealed religion as presented in the Theological-Political Treatise. My claim is not only that obedience as conceived by Spinoza always entails fear, but that the biblical image of God as king or lawgiver requires fear to fulfill its function; and thus, by extension, that fear remains one of the very tissues that binds together the body politic. Although, throughout his corpus of work, Spinoza often associates fear with cognitive weakness and a destabilizing temperament, he also acknowledges its potential use for sustaining civic concord. My argument is both positive and negative: the state can foster support for itself by the proper utilization of religious fear, but if it neglects to do so, it undermines its stability and risks falling victim to the destructive effects of superstition.
Reflections on Veritatis splendor
Authors: Pinckaers Servais ,   The National Catholic Bioethics Center
Published: December 2020

The encyclical Veritatis splendor represented a renewal of moral theology in the spirit of Vatican Council II. Pope St. John Paul II emphasized Gospel teaching in light of the Old Testament, reiterating the animating role of the Holy Spirit in the New Law. Properly understood, the New Law is not a code of obligations, but a dynamic life of charity made intelligible through grace and the natural law. As a primary connection between human beings and divine law, natural law inclines persons toward the good, thus providing an apprehensible link between human freedom and objective truth—enabling us to determine what is good and evil. This understanding of judgment provides a corrective for theological trends toward proportionalism and consequentialism.
To the Sickest or to the Healthiest?
Authors: Austriaco Nicanor Pier Giorgio ,   The National Catholic Bioethics Center
Published: December 2020

The COVID-19 pandemic has raised questions about the just allocation of limited medical resources. In this essay, I consider four pressing moral questions raised by the scarcity of mechanical ventilators, using the guiding principle that the primary criterion should be the conviction that each and every human being has equal moral status because each has an intrinsic dignity that makes him or her inestimable and inviolable. I propose that any legitimate criteria for ventilator allocation cannot discriminate among patient populations on the basis of any judgments that are not medically relevant. Instead, ventilators should be distributed solely on the basis of the likelihood that they will benefit patients and enable them to heal.
Is It Coherent to Be Merely Personally Opposed to Abortion?
Authors: Hershenov David , Hershenov Rose ,   The National Catholic Bioethics Center
Published: December 2020

Is it coherent to be personally opposed to abortion but to accept others’ decisions to terminate their pregnancy (referred to in this article as the IPOB position)? This might appear to be the case if one appeals to the different situations and attitudes of pregnant women. To the contrary, only those people whose personal opposition to abortion is restricted to situations in which the pregnancy and its consequences are not very burdensome can consistently hold their IPOB position and espouse an objective ethics. The vast majority of people claiming to be merely personally opposed cannot coherently sustain that position. To be logically coherent, the latter not only must be committed to condemning the abortions of others and have the moral standing to do so, but more importantly and controversially, must be committed to call for a legal ban on abortion rather than restrict themselves to being merely personally opposed to abortion.
Rescuing the Good Samaritan in Embryo Adoption and Beyond
Authors: Reilly Christopher M. ,   The National Catholic Bioethics Center
Published: December 2020

Embryo adoption, when oriented to the rescue of a dignified human person, is a merciful and morally licit response to an evil consequence of in vitro fertilization and the freezing of embryos. Those who object to embryo adoption not only misconstrue the relevant moral reasoning but exhibit confusion among the object, intention, and circumstances and between two very different potential objects. Because the mercy and charity effected through embryo adoption are at the very heart of moral action, juridical arguments that undermine people’s confidence in these priorities have far-reaching, harmful implications.
Social Shutdowns as an Extraordinary Means of Saving Human Life
Authors: Paprocki Thomas John ,   The National Catholic Bioethics Center
Published: December 2020

The effects of the novel coronavirus have raised questions about the extent to which social shutdowns are appropriate. We have a responsibility to protect the lives of others and an obligation to maintain our lives and health when possible, but there are circumstances when it is just to decline certain measures that are considered extraordinary to the situation. Measures taken to protect life must be proportionate. That is, they must offer a reasonable hope of benefit and not impose excessive burdens on individuals, families, or the community. The measures enacted during the COVID-19 pandemic are not proportionate. Restrictions on family and religious activities are disproportionate to the benefit they provide, particularly to the extent that they obstruct the Church in its duty to tend to the health of souls and salvation of its members
Long-Term Variability in Immunofluorescence Titer of Antibodies to Nuclear Antigens Observed in Clinical Laboratory Proficiency Testing Surveys
Authors: Wener Mark H. , Fink Susan , Bashleben Christine , Sindelar Stephanie , Linden Michael A.
Published: December 2020

Context.—

Presence of antibodies to nuclear antigens (ANAs) above a threshold titer is an important diagnostic feature of several autoimmune diseases, yet titers reported vary between laboratories. Proficiency survey results can help clarify factors contributing to the variability.

Objective.—

To determine the contribution of HEp-2 ANA kits from different manufacturers to the variation in titers, and assess whether the differences between kits are consistent over the long term.

Design.—

HEp-2 ANA titers reported by laboratories participating in the external quality assessment proficiency testing surveys conducted by the College of American Pathologists between 2008 and 2018 were analyzed. The ANA titers reported for each specimen were ranked according to the kits being used by testing laboratories, and the statistical significance of the differences was determined.

Results.—

The ANA titer results were strongly influenced by the HEp-2 ANA kit used (P < .001). During the 11 years studied, the rank order of the ANA titer for each kit relative to the other kits was remarkably consistent. The rank of ANA titer for individual ANA patterns observed for each kit was similar to the overall rank of that kit.

Conclusions.—

Variability in ANA titers was strongly associated with the kits used, and the differences between kits were quite consistent during the 11 years studied. Because the variability is not random, it has the potential to be managed by harmonizing kits, which could lead to improved consistency in reporting ANA titers.
Risk of torrential floods focusing on analysis of torrential floods in the Branicevo district from 2015 to 2018
Authors: Đorđević Goran , Ristić Ratko , Ratknić Mihajlo , Mijatović Andreja
Published: December 2020

A large number of torrential floods in the Republic of Serbia, with increasingly destructive effects and extensive material damage, are a problem that must be addressed systematically. The risk of this emergency situation is high, primarily due to the climate and geographical characteristics of our areas, poor preventive protection against torrential floods, lack of plans for the prevention of adverse events, poor risk assessment methodology, and sometimes poor organisational structure, all of which can lead to catastrophic consequences. Also, an inadequate and dysfunctional early warning system against the occurrence of torrential disasters makes the system of torrential flood protection in the Republic of Serbia is inadequate. The main problem is that no torrents are the same and there is a different scenario for each of them. This paper analyses three major torrential floods in the Braničevo district over a period of three years. The increasing amount of atmospheric precipitation over a short period of time warns us that there will be more and more of these extraordinary events and it is up to the state authorities to find a model of how to cope with these phenomena as successfully as possible.
European Union strategy for the Western Balkan and security challenges resolution in the Republic of Serbia
Authors: Ristović Svetlana
Published: December 2020

This paper presents the EU Western Balkan Strategy and focuses on solving security problems common to the region and the Republic of Serbia. The analysis of this strategic document and strategic orientation of Serbia in relation to main security issues shows their complementarity. First of all, these documents share essentially same views on security issues, for which the Western Balkan is not only a transit area, but a final destination and even the source, particularly organized crime, terrorism and irregular migration. Prevention and suppression of given issues determines priorities of the Serbian police, at the same time leading to successful response to crime and other security threats in Serbia, as well as achievements in meeting commitments in the EU accession process and adopting the European acquis.
Challenges in the work of intelligence services in the information age
Authors: Miljković Milan
Published: December 2020

The collection and analytical work of modern intelligence services faces numerous challenges because the environment in which the services operate is characterized by the need for rapid data collection, analysis and decision-making, almost in real time. When we consider security work, the growing dependence on modern information technology makes the information structure of services sensitive and "vulnerable" to information attacks. Also, the application of information operations as a form of performing secret actions has been updated. Information technology has also changed the relationship between the service and users, introduced the possibility of applying the "pull" architecture for obtaining information, which, in addition to the good sides, also brings certain challenges. Due to all the above, the intelligence services are adapting to the technological, organizational and cultural changes brought about by the information revolution. The paper reviews the challenges in the work of modern intelligence services, primarily from the aspect of the impact of mass application of modern information technology on operational and analytical work, as well as the application of secret actions in the work of services. The aim of this paper is to point out the numerous challenges that the information revolution brings to modern intelligence services. A comparative analysis of the presented research material leads to the conclusion that the services encounter new tasks and ways of functioning in all their activities, which ultimately raises the sensitive issue of their reform. The conclusion reached in this paper is that the reform of intelligence services in the "information age" is in any case necessary, but that its implementation should not be revolutionary, but must be carried out evolutionarily.
The impact of foreign aid on household income among ethnic minority groups in Vietnam
Authors: Nguyen Luan , Tran Tuyen , Tran Hang
Published: December 2020

Ethnic minorities in Vietnam account for only 15% of the population, but their poverty levels total more than 70% of the national poverty rate. Foreign aid has been an important financial resource supporting the socioeconomic development of ethnic minorities in Vietnam. Based on the empirical research in ethnic households conducted in nine provinces throughout the country, the effect of foreign aid on household income was estimated using the OLS regression model. The results show varying effects in the magnitude and significance among different ethnic groups. Specifically, aid has significantly improved the livelihood of the Cham and Xtieng populations, whereas the results for the Hmong population are detrimental. Consequently, it is suggested that aid and the ethnic policy should be reconsidered in order to reduce inequality among ethnic groups.