bluuebunny/crossref_metadata_2025 huggingface dataset:
A preliminary seismological report
Authors: Adams R. D. , Eiby G. A. , Lowry M. A.
Published: February 2021

The Inangah.ua earthquake of 1968 May 23 (May 24 , 5.24 a.m. local time) was the first New Zealand earthquake to reach magnitude 7 since that in Fiordland on 1960 May 24. (Unless otherwise stated all dates and times in this paper are expressed in Universal Time. To obtain New Zealand Standard Time add 12 h.) It became the sixteenth New Zealand earthquake believed to have reached magnitude 7 or greater since 1848, since when all such earthquakes should have been observed. Earthquakes of this magnitude, therefore, occur somewhere in New Zealand on an average of about once every eight years, and cannot be considered unusual events.
Simulated earthquake test of a timber house
Authors: Tracey W. J.
Published: February 2021

As their product is being erected in many areas prone to earthquake, a New Zealand building company decided to investigate the effect of earthquakes on one of their units constructed at Rotorua. Recommendations which had been made by the D.S.I.R. on the nature of the tests were followed but were extended to give a more comprehensive set of tests.
A critical look at the design of reinforced concrete for ductility
Authors: McKenzie G. H. F.
Published: February 2021

In designing adequate ductility into a frame structure to resist earthquake forces, the portion of the procedure which has the least satisfactory theoretical and experimental basis is the strictly design part. This is the section in which the designer, having assessed the ductility demands of the various members of the frame, proceeds to decide on the concrete dimensions and reinforcement pattern which will satisfy these demands. The reasons for the shortcomings are fairly obvious. Unlike frame analysis and frame response, which can be dealt with as tidy applied mechanics problems, investigation of the design problems requires research workers with an extensive design background, and an awareness of all the design criteria which have to be satisfied. Unfortunately, such research workers are rare, and consequently insufficient research has been carried out. What research has been done has obviously not been planned with a view to obtaining information that can be used in design.
Pressure-gas butt welding of reinforcing bars
Authors: Armstrong I. C. , Page W. J.
Published: February 2021

Detailing for ductility in reinforced concrete earthquake-resistant structures and the risk of non-ductile failure at lap splices of the larger sizes of reinforcing bars have resulted in increasing use of full-strength butt welds of reinforcing bars. The benefits to be gained from eliminating long lengths of lapping bars and reducing serious congestion are overshadowed, however, by the time and cost (both direct and indirect) involved in making arc welds on site and the necessity for special supervision and testing of the work.
Earth deformation and earthquake prediction
Authors: Lensen G. J.
Published: February 2021

If ten years ago a scientist had been asked to present a paper on this subject he would have shrugged his shoulders and left this field clear to astrologers and doomsday prophets of weird religious sects.

Now, ten years later such an amount of precursory evidence has accumulated that scientists in California, Russia and Japan are confident that, given the facilities for these studies, it will be possible to forecast major earthquakes, which have their epicentres on land, within the next 10 - 20 years. In fact several successful forecasts have already been made in California.
Earthquake symposium; Melbourne Australia 1969
Authors: Hitchcock H. C.
Published: February 2021

A very successful symposium on the subject of earthquakes was held recently in Melbourne under the auspices of the Structural Branch of  the Institution of Engineers Australia (Victoria Division) and the Geophysics Group of the Australian Institute of Physics.
Eccentric beam to column junctions
Authors: Mead F. H.
Published: February 2021

May I, through the Society's Bulletinf draw attention to a stress condition occasionally occurring in framed structures which, I believe, is little recognised and seldom provided for. I refer to torsional and other stresses developed in columns as a result of lateral loads applied to frames with eccentric beam/column connections.
A review of the seismic resistance of prestressed concrete
Authors: Blakeley R. W. G. , Park R. , Shepherd R.
Published: February 2021

The use of prestressed concrete components has been accepted for many years for structures under gravity loading. The applications of the material are increasing rapidly, encouraged by such advantages as the possibility of pleasing architectural forms, and the suitability of prestressed concrete to modern prefabricated construction. However the use of prestressed concrete in primary seismic resistant elements such as shear walls and frames has created considerable controversy. This review is a historical trace of the approach of design and research engineers to the suitability or otherwise of prestressed concrete for earthquake resistance. It discusses such fundamental properties as stiffness, damping, energy absorption and dissipation, and ductility, all of which will affect the response and hence the structural behaviour of prestressed concrete buildings under earthquake loading.
Hurricane Camille
Authors: Editor
Published: February 2021

The Office of Emergency Preparedness, in the Executive Office of the President of the United States of America, is established to advise and assist the President in the total non-military defence and emergency preparedness of the United States, for the events either of war or natural disaster. The OEP administers for the President the natural disaster relief program for assistance to areas stricken by hurricanes, tornadoes, earthquakes, floods and other natural catastrophes.
Assessment of earthquake response from modal analysis
Authors: McKenzie G. H. F.
Published: February 2021

Code feature section
Shephard and Glogau - "Seismic design of public buildings"
Authors: Edwards W. P.
Published: February 2021

Editor's Note: Written discussion about material published in the Bulletin is invited, and will be published, together with the Author's response, in this Section. Contributions other than Author's replies should reach the Editor not later than ten weeks before publication of the issue in which they are to appear.
Earthquake prognostication in the Soviet Union
Authors: Nersesov Igor
Published: February 2021

This paper was written for the Bulletin at the request of the Novosti Press Agency, Moscow, and forwarded through the Information Section, Legation of the USSR, Wellington.
Present status of the railway technical research institute and seismic research and designing in the Japanese national railways
Authors: Nishiki Tatsuo
Published: February 2021

As Director of the Railway Technical Research Institute, JNR, I deem it a great honour to contribute an article to your esteemed Bulletin, about the present status of this Institute and about the latest developments in seismic research and designing in JNR.
Inelastic behaviour of reinforced concrete members with cyclic loading
Authors: Kent D. C. , Park R.
Published: February 2021

The results of an investigation into the behaviour of reinforced concrete members subjected to cyclic loading in the inelastic range are summarized. The investigation commences with studies of the Bauschinger effect for cyclically stressed mild steel reinforcement and the influence of rectangular steel hooping on the stress-strain behaviour of concrete. Using these derived stress-strain curves the moment-curvature relation ships for reinforced concrete members under cyclic loading are studied theoretically and compared with the results of a series of tests on reinforced concrete beams under cyclic loading.
Ductility of prestressed concrete members
Authors: Blakeley R. W. G. , Park R.
Published: February 2021

An analytical determination of the moment-curvature relationships of prestressed concrete members under high intensity monotonic loading is presented, and compared with experimental results. The effects on ductility of such variables as transverse reinforcement, distribution of the prestressing steel within the section, steel area ratio, and axial load are described. A comparison is made of the ductility available in comparable prestressed and reinforced concrete members. The results of tests on prestressed concrete beam-column assemblies under high intensity cyclic loading are referred to and conclusions are drawn on the seismic resistance of prestressed concrete members. Load factors for seismic design are discussed.
Strong motion data centre
Authors: Denham D. , Small G. R.
Published: February 2021

A Strong Motion Data Centre, for the collection, storage, distribution and preliminary analysis of accelerograms from the Australian and New Guinean regions, has recently been established at Canberra by the Australian Bureau of Mineral Resources. The work undertaken at the Centre is described and examples of the processing facilities available are given. Extensive use is made of computers in the analysis of the accelerograms and the plotting of the results. By December 1970 thirteen accelerographs had been obtained, by several institutions, for installation in the Australian and New Guinea regions and 24 accelerograms had been received at the Centre for analysis. The instruments located on unconsolidated material at Lae, Yonki and Panguna are currently producing about 5 accelerograms per year and the maximum ground acceleration recorded so far, of 0.12g, was obtained at Panguna, where the accelerograph is located on recent unconsolidated volcanic ash.
Review of geophysical strain measurement
Authors: Sydenham P. H.
Published: February 2021

Strain measurements are of interest to both fundamental and engineering geophysics. A review of the various methods for surface and sub-surface deformation measurement is presented. The need to improve testing and calibration methods is stressed.
A field test for dynamic soil properties
Authors: Evans G. L.
Published: February 2021

The propogation velocity of waves through ground has been used for many years in the seismic surveys for the detection of underlying strata. From a knowledge of the percussion (P) and shear (S) wave velocities in different materials, together with their bulk densities, it is possible to derive dynamic moduli and properties, such as the shear modulus (G) and poisson’s ratio (n), which are essential in  the solution of problems relating to dynamic earth pressure, soil structure interaction and the dynamic analysis of foundation strata relating to earthquake engineering.

The principle involved in finding the wave velocities in ground materials is the same as used in finding velocities in any material. A simple wave form or pulse is generated at one point and the travel time to several other  points is detected with suitable signal receivers.
Design lessons from recent destructive earthquakes
Authors: Skinner R. I.
Published: February 2021

Recent severe earthquakes have selectively damaged or destroyed many large modern buildings. The destructive earthquake s at Caracas in Venezuela, July 1967, near Tokachi-oki in northern Japan, May 1968, and the two earthquakes at Manila in the Philippines, August 1968 and April 1970, have all highlighted important factors which should be considered during the earthquake-resistant design of buildings. Reports on these earthquakes which directly supplement this paper are listed in the references.
An immediate field survey of the San Fernando, Los Angeles, earthquake, February 9, 1971
Authors: Adams R. D.
Published: February 2021

The San Fernando earthquake occurred in the San Gabriel Mountains, about 25 miles to the north of central Los Angeles. Its magnitude, about 6 1/2, was not exceptionally large, and such earthquakes are not uncommon in California. Not since the Long Beach earthquake of 1933 (magnitude 6.3), however, has a significant shock occurred near a densely built-up area. The greatest damage appears to be associated with a zone of overthrusting, where the San Gabriel Mountains meet the San Fernando Valley to the south of the epicentre. In some places this overthrusting caused conspicuous ground deformation through built-up areas of San Fernando and Sylmar.

Domestic wooden-frame houses in general withstood the earthquake well, but large hospital buildings at the Olive View Medical Center and Veterans’ Administration Hospital at Sylmar failed badly. Conspicuous damage was also caused to freeway overpasses, the Sylmar Converter Station, and to  the Van Norman Reservoir complex. Total damage  is estimated as high as U.S. $1,000,000,000. Ground accelerations of about 1g were recorded in the abutment of the Pacoima Dam, to the north of San Fernando.
Classification of high earthquake risk buildings
Authors: Glogau O. A.
Published: February 2021

Draft code of practice, 2 March 1972
The structural check of high rise building design
Authors: Edwards W. P.
Published: February 2021

Some years ago a paper describing the operations of the High-Rise Building Committee of Japan was presented to both Auckland and Wellington Branches of the Earthquake Group  of the Consultants’ Division. Subsequently, the Group referred the paper to the N.Z. National Committee on Earthquake Engineering and to the N.Z. Society for Earthquake Engineering with a recommendation that these bodies take the initiative in setting up a similar high-rise building committee in New Zealand.
Theorisation of structural behavior with a view to defining resistance and ultimate deformability
Authors: Park R.
Published: February 2021

This report reviews theoretical investigations which have been conducted to determine the behaviour of reinforced concrete, prestressed concrete and structural steel elements subjected to well defined repeated and reversed loading of high intensity. It commences with a brief summary of the stress-strain characteristics of the materials under such loading in the plastic range and then reports on theoretical methods for determining the moment-curvature and load-displacement characteristics of the members. Some consideration is also given to complete structures. Areas where future research is necessary are indicated.
Behaviour of a prestressed concrete interior beam-column assembly under cyclic loading
Authors: Park R. , Thompson K. J.
Published: February 2021

The University of Canterbury is at present conducting an experimental investigation into the seismic resistance of concrete building frames. This research project is sponsored by the N.Z. Prestressed Concrete Institute, the Building Research Association (N.Z.) and the University. The test frames will include a range of proportions of prestressing steel and ordinary reinforcing steel to allow a comparison of prestressed and reinforced concrete frames and to establish the possible advantages of combining both systems. The tests are aimed at determining the deformation capacity and degree of damage of such frames when responding to severe seismic load reversals and will establish further basic information for the evaluation and design of framed structures for earthquake resistance. Testing of the first test specimen has been completed. The specimen (Unit 1) consisted of a beam-column assembly with a prestressed concrete beam. After testing under very severe seismic type loading the damaged concrete was repaired and the assembly retested. This  report summarizes the results obtained from the tests on that specimen.
A design criteria of beam-to-column joint panels
Authors: Kato B.
Published: February 2021

The performance of beam-to-column joint panels of steel frames under horizontal loading is surveyed in elastic and plastic regions. Then the influence of shear deformation of those joint panels on the frame stiffness is investigated. It is found that the frame stiffness reduces remarkably when the yielding of joint panels takes place. Taking into account these observations, a simple and practical design method of various shapes of joint panels is suggested.
Aspects of high earthquake risk government buildings
Authors: Sinclair D.
Published: February 2021

Extract from proceedings of Seminar on High Earthquake Risk Buildings.
The need for a strengthening code
Authors: Bluck B. C.
Published: February 2021

Extract from proceedings of Seminar on High Earthquake Risk Buildings.
An application of finite element method to soil-foundation interaction analyses
Authors: Kuribayashi Eiichi , Lida Yutaka
Published: February 2021

This paper discusses the soil-foundation interaction of an actual structure. The Kanmon Bridge, completed in November 1973, is a three span suspension bridge with 712m center span crossing over the Kanmon Strait between Shimonoseki in Honshu main island and Moji in Kyushu island. During the construction period dynamic field tests on both of the foundations of two main towers were carried out. The Shimonoseki-side foundation, 40m wide, 20m long and 14m deep, weighs about 25,000t and the Moji-side foundation, 40m wide, 20m long and 30m deep, weighs about 50,000t. Their bottoms reach to sound rock layers. Sinusoidal vibratory horizontal forces, up to 35t at 5.5c/s and 40t at 12c/s, were applied to the tops of the foundations. Several peaks appear in resonance curves. In considering the appearance of these peaks, interaction between the structure and the surrounding ground should be taken into consideration. Some analyses were conducted to estimate elastic moduli of the soils and to obtain dynamic characteristics of the Moji-side foundation. From the tests and the analyses the following may be concluded.

1) Elastic moduli of the soils are considerably greater (about 5 times) than those used in the design, therefore displacement due to seismic excitations during future earthquakes may be smaller than those expected in the design.

2) In discussing dynamic characteristics of huge foundations it is necessitated to consider the effects of geological and topographical features and of adjacent structures. And dynamic characteristics of those structures can be satisfactorily obtained by a response analysis on the basis of the finite element method.
Progress report on cyclic load tests on prestressed partially prestressed and reinforced concrete interior beam-column assemblies
Authors: Park R. , Thompson K. J.
Published: February 2021

The University of Canterbury is at present conducting an experimental investigation into the seismic resistance of concrete building frames. This research project is sponsored by the N.Z. Prestressed Concrete Institute, the Building Research Association (NZ) and the University. The test frames include a range of proportions of prestressing steel and ordinary reinforcing steel to allow a comparison of prestressed and reinforced concrete frames and to establish the possible advantages of combining both systems. The tests are aimed at determining the deformation capacity and degree of damage of such frames when responding to severe seismic load reversals and will establish further basic information for the evaluation and design of framed structures for earthquake resistance.

The specimens consist of beam-column assemblies with either a prestressed, partially prestressed or reinforced concrete beam. This paper summarizes the results obtained from the first eight test units. The results from the first seven units may be seen reported in more detail elsewhere.
Seismic performance of two full size reinforced concrete beam-column joint units
Authors: Blakeley R. W. G. , Megget L. M. , Priestley M. J. N.
Published: February 2021

The design, construction and testing of two large reinforced concrete beam-column assemblies, representing an interior and an exterior joint, are described. Member details were based on an actual frame building designed by the M.W.D. Extensive results are presented which indicate very satisfactory behaviour particularly in the joint region. Hinges formed in the beams in all cases, and stable behaviour was obtained at displacement ductility factors of up to 6 and 8 for the interior and exterior test units respectively. Results are assessed in terms of design assumptions, and tentative design recommendations are made.
Ductile reinforced concrete frames
Authors: Park R. , Paulay T.
Published: February 2021

The 1971 building code of the American Concrete Institute contains an appendix with special provisions for the seismic design of reinforced concrete structures. The provisions are based on the code of the Structural Engineers' Association of California and on research evidence and studies of damage to buildings. This paper comments on a number of the provisions for reinforced concrete frames and where necessary indicates where improvements appear to be required. The comments on flexural members and columns cover curvature ductility factors resulting from the flexural steel provisions, the transverse steel required for shear strength, concrete confinement, and restraint against buckling of compression bars, and the affect of cyclic loading. The comments on columns also cover the avoidance of plastic hinges in columns by taking into account the probable distribution of bending moments during dynamic excitation and biaxial bending. The comments on beam-column connections touch on the design of shear reinforcement for joint cores. Some observations on capacity design, and suggestions for capacity design procedures, are also made.
Notes on the new New Zealand earthquake loading provisions
Authors: Kolston D.
Published: February 2021

The paper indicates various aspects of the new earthquake loading provisions which are at present still in draft form. Important changes from the previous code include requirements regarding ductility, energy dissipation, capacity design, concurrency effects, foundation design, torsional effects and separation of elements. The seismic design coefficients for buildings and part of buildings are related to zoning, building period, subsoil, importance factors, structural type, structural material and risk factors. Dynamic analysis is directly related to the codified equivalent static force spectrum.
The cyclic yield response of a steel star plate cruciform joint
Authors: Croad R. N. , Mead F. H. , Shepherd R.
Published: February 2021

This paper is a summary of an investigation into the cyclic response of a steel cruciform joint. A star plate beam to column joint identical to one of those forming the frame of the pier structure at Auckland International Airport was tested at the University of Auckland, School of Engineering. In this paper both the preparations undertaken and the subsequent experimental programme are described. The results are analysed and the observed behaviour is discussed. Comparisons are made with recently proposed design criteria for steel beam to column connections, as well as with formulae for predicting the load-deflection curves. Conclusions are drawn on the suitability of these theories for response prediction of star plate geometry joints. Additionally the energy absorption capabilities of the joint are compared with results from earlier American research.
Inelastic dynamic analysis of steel structures
Authors: Lord J. , Hoerner J. B. , Zayed M.
Published: February 2021

This paper updates a previously described analytical approach (1,2) using computer technology to investigate the time-dependent material non-linear behaviour of two dimensional moment-frame, truss-frame, and braced-frame steel structures during significant excursions into the post-elastic range. The approach includes considerations for energy analysis; element buckling; stable or unstable mechanism formation; yield capacity reduction resulting from interaction of axial load and bending moment; stiffness degradation; P-δ effects; viscous damping; joint panel zone deformation; and also incorporates a suitable element load-deformation relationship. The computer program NLDYN2 which incorporates this approach has been implemented successfully on many steel structures ranging from 60-story moment frames to braced frames having aspect ratios of up to 10.
The Effects of Slicing Parameters on Surface Quality of European Beech Wood
Authors: Jankowska Agnieszka , Kozakiewicz Paweł , Zbieć Marcin
Published: February 2021

The main objective of this work was to evaluate the effects of flat slicing processes on wood surface characteristics of the European beech (Fagus sylvatica L.). The relation between wettability, roughness and machining methods were studied. Two different wood thickness (3.4 and 4.0 mm) and three levels of compression during slicing (67.5 %, 57.5 % and 47.5 % of desired veneer thickness) were used to prepare surfaces prior to testing. The smaller variation of the thickness of thinner veneers was observed. No significant impact of compression on variation of the thickness was found. The contact angle was lower when roughness measured parallel to the grain was higher. The influence of selected compression on roughness of European beech veneers measured perpendicular to the grain was confirmed. This indicated that the influence of the set of machining processes, such as pressure bar setting during slicing, is significant for wooden veneers surface properties.
CluWords: Explorando Clusters Semânticos entre Palavras para Aprimorar Modelagem de Tópicos
Authors: Gomes Christian Reis Fagundes , Viegas Felipe Augusto Resende , Cunha Washington Luiz Miranda da , Rocha Leonardo Chaves Dutra da
Published: February 2021

Neste trabalho avançamos o estado-da-arte na modelagem de tópicos por meio de uma nova representação de documentos baseada em word embeddings pré-treinados para fatoração de matriz não-probabilística. Nossa estratégia, chamada CluWords, explora as palavras mais próximas em um determinado espaço word embedding pré-treinado para gerar meta-palavras que são capazes de melhorar a representação de documentos, tanto em termos de informações sintáticas quanto semânticas. Em nossa avaliação, considerando 12 bases de dados e 8 linhas de base, obtivemos melhoras na maioria dos casos, com ganhos de mais de 50%. Nosso método também é capaz de melhorar representação dos documentos para a tarefa de classificação automática.
Robôs Evolutivos para a Investigação do Comportamento de Ratos no Teste de Campo Aberto
Authors: Trento Raineri Luciana , Silva Del Lama Rafael , Candido Raquel Mariana , Costa Ariadne , Tinos Renato
Published: February 2021

O teste do campo aberto é um experimento bastante utilizado para teste de nı́veis de atividade motora e ansiedade em roedores, permitindo o es- tudo de compostos farmacológicos ansiolı́ticos ou ansiogênicos. Neste traba- lho, foi desenvolvido um modelo computacional para ratos virtuais baseados em robôs evolutivos para o teste de campo aberto. O rato virtual é controlado por uma rede neural recorrente otimizada por algoritmos genéticos (AGs). A função de fitness utilizada no AG corresponde ao conflito entre medo e caráter exploratório do rato no campo aberto. Simulações e um experimento com o robô real indicam que o rato virtual otimizado tem comportamentos similares aos de ratos reais no teste do campo aberto.
Aplicando Nuvem de Partículas para Atenuar o Dilema entre Diversidade e Acurácia em Domínios de Recomendação
Authors: Trotta Tiago , Carvalho Diego , Silva Nícollas , Rocha Leonardo
Published: February 2021

Sistemas de Recomendação (SsR) focam na apresentação dos itens mais relevantes aos usuários a fim de melhorar a acurácia do sistema. Entretanto, a acurácia não é suficiente para avaliar a efetividade prática das recomendações. Métricas como novidade, diversidade e imprevisibilidade são chave para se avaliar a utilidade de SsR em cenários reais. Especificamente, há um dilema em aberto de acurácia-diversidade capaz de impulsionar as vendas ao oferecer aos consumidores tanto itens convencionais quanto específicos. Para lidar com esse dilema, propomos uma abordagem de pós-processamento, baseada em Nuvem de Partículas, que reordena as listas recomendações de SsR tradicionais, melhorando a diversidade em até 70% sem perda de acurácia.
Um Sistema de Reconhecimento de Espécies de Moscas-das-Frutas
Authors: Leonardo Matheus Macedo , Faria Fabio Augusto
Published: February 2021

Moscas-das-frutas são insetos de grande importância biológica e econômica para a agricultura de diferentes paı́ses no mundo. As perdas diretas e indiretas causadas por essa praga podem exceder USD 2 Bilhões, tornando-a um dos grandes problemas para a agricultura mundial, especialmente para o Brasil. Nesse contexto, o desenvolvimento de sistemas para a identificação automática ou semiautomática de moscas-das-frutas do gênero Anastrepha pode auxiliar os especialistas (entomólogos) na redução de tempo de análise e nas perdas. Neste trabalho de iniciação cientı́fica, nós propusemos um sistema de reconhecimento de moscas-das-frutas baseada em duas diferentes representações de imagens: (1) representação de nı́vel-médio (Bag-of-Words); (2) representação de aprendizagem profunda (deep learning-based features). Ambos trabalhos conseguiram excelentes resultados de eficácia para a tarefa de identificação de três espécies das moscas-das-frutas do gênero Anastrepha superando os resultados encontrados na literatura.
Desenvolvimento de um Chatbot baseado em Ontologia para Atendimento a Chamados de Suporte ao Cliente
Authors: Boalim Tales , Dos Santos Fábio , Yaguinuma Cristiane , Silva Malcom
Published: February 2021

Chatbots no contexto de suporte ao cliente permitem que dúvidas frequentes sejam resolvidas de forma rápida sem necessitar a alocação de um atendente e, consequentemente, podendo aumentar a quantidade de atendimentos por dia. Foi feito um estudo de caso de uma empresa sobre a senha de liberação do sistema, um pedido que causava sobrecarga na equipe de suporte. O objetivo do projeto foi desenvolver um chatbot capaz de, em um primeiro momento, responder os pedidos sobre senha de liberação e reduzir a quantidade de atendimentos do suporte humano. Foram realizados estudos de diversas ferramentas para desenvolvimento do chatbot e a ferramenta escolhida para o projeto foi a Dialogflow por possuir todas as funcionalidades necessárias para a implementação. Foram realizados experimentos com usuários, apresentando resultados satisfatórios.
Desenvolvimento de uma Bengala Automatizada Utilizando Arduino para Deficientes Visuais
Authors: Lima Fernando , Souza Simone , Volkmer Mayara , Costa Rayssa
Published: February 2021

Neste artigo apresenta-se o processo de desenvolvimento, construção e testes de um protótipo de uma bengala automatizada para deficientes visuais. O projeto foi idealizado com o intuito de criar uma ferramenta automatizada para auxiliar os deficientes visuais nas suas atividades diárias, de modo a identificar obstáculos e evitar colisões. Para a montagem do protótipo modelo, foram utilizados materiais de baixo custo e arduino. Durante a elaboração do protótipo, foi realizada uma pesquisa de campo no Centro Municipal de Educação Especial Professora. Isoldi Storck na cidade de Tangará da Serra-MT, onde quatro alunos cegos foram entrevistados e realizaram testes com o protótipo. Através da participação e avaliação dos deficientes, pode-se destacar que os resultados obtidos são satisfatórios, e o protótipo desenvolvido neste trabalho além de seguro e confiável, atende as necessidades identificando obstáculos com precisão.
Protótipo de um robô seguidor de piso tátil utilizando visão computacional
Authors: Moretto Marcos , Mello Konflanz Renato
Published: February 2021

Este trabalho visa propor um algoritmo que permita um robô se localizar e navegar de forma autônoma dentro de um ambiente com pisos táteis se utilizando de visão computacional, de forma a oferecer uma forma de navegação autônoma para robôs sem que seja necessário a modificação do ambiente em que ele atuará. Durante o desenvolvimento do trabalho o algoritmo é proposto, desenvolvido e testado dentro do câmpus da Unochapecó. Ao fim, é concluído que o algoritmo proposto tem potencial de ser utilizado em sistemas de transporte e de assistência para cegos em locais que já possuem pisos táteis, apresentando uma alternativa com baixo custo para localização e navegação autônoma de robôs.
Sistema de Gerenciamento de um Estacionamento Inteligente utilizando sensores de efeito Hall
Authors: Borges José , Cezário André , Junior Valdir , Junior Givanildo
Published: February 2021

Esta pesquisa tem por finalidade apresentar uma solução automatizada que agilize a busca por vagas em estacionamentos públicos ou privados. Visando acelerar este processo, é proposto neste artigo um sistema didático inserido em plataforma Arduino integrado a sensores de efeito Hall responsáveis por identificar os veículos em cada vaga. Os resultados obtidos com o protótipo resultante indicam a viabilidade econômica de expansão deste projeto para um ambiente real visando produzir benefícios à sociedade.
Plataforma Web para Gestão dos Estágios Supervisionados nos Cursos de Graduação
Authors: Baluz Rodrigo , Rocha Francisco , Souza Isaac
Published: February 2021

O estágio supervisionado é um elemento obrigatório a muitos cursos de graduação servindo como forma de conectar o estudante do ensino superior ao mercado de trabalho. Este trabalho tem como objetivo desenvolver um sistema web que irá sistematizar e automatizar os processos que envolvem os atores, alunos, professores, coordenação de curso e empresas relacionados à atividade acadêmica do estágio supervisionado no âmbito da Universidade Estadual do Piauí. O SIGESTAGIOS ficou disponível para testes por parte de atores selecionados do curso em estudo, durante um período de 30 dias, sendo em seguida, avaliado quanto sua usabilidade, alcançando um bom índice de aceitação.
Octave Correction Tool: uma Ferramenta de Correção de Rotinas Computacionais para a Disciplina de Cálculo Numérico
Authors: Morais Erikson , Silva Iara , Castilho Joao Augusto , Silva Wesley
Published: February 2021

O Octave Correction Tool é uma ferramenta de correção de rotinas implementadas em GNU Octave/MATLAB. Os laboratórios computacionais semanais de cálculo numérico ajudam os alunos na compreensão dos métodos apresentados em aula e a se familiarizar com a linguagem de programação utilizada no curso. A ferramenta de correção apresentada neste artigo, fornece um feedback rápido e uma correção mais precisa aos alunos e otimiza o tempo do professor fornecendo planilhas com notas e relatórios de desempenhos dos alunos de forma automática.
Avaliação empírica de termos técnicos em issues de projetos opensource
Authors: Machado Ivan , Júnior Joselito
Published: February 2021

A demanda crescente por sistemas de software robustos e confiáveis tem levado a comunidade científica e a indústria de software a investigar aspectos relacionados aos defeitos reportados em sistemas de rastreamento de defeitos. O objetivo comum é compreender as causas dos defeitos, e assim estabelecer estratégias para prevenir sua ocorrência e propagação, reduzindo possíveis danos. Os defeitos reportados por usuários através de issues em rastreadores de defeitos revelam informações importantes para os desenvolvedores. A presente investigação realizou uma análise de dados provenientes de 510.212 issues de 85 repositórios de projetos de código-fonte aberto, disponíveis no Github. Com o auxílio de uma lista de 608 termos técnicos selecionados manualmente, foi analisada a frequência na utilização dos termos pelos contribuidores desses repositórios. O estudo encontrou o emprego dos termos nos diferentes campos de uma issue, bem como a possibilidade de identificação dos termos mais utilizados nestes repositórios. Os resultados deste estudo apontam para ganhos potenciais na compreensão do ambiente de falhas por apresentar termos que formam indicativos de defeitos em estruturas fundamentais do repositório.
On the Graceful Game
Authors: Luiz Atilio , Dantas Simone , Ricardo Luisa
Published: February 2021

A graceful labeling of a graph G with m edges consists in labeling the vertices of G with distinct integers from 0 to m such that, when each edge is assigned the absolute difference of the labels of its endpoints, all induced edge labels are distinct. Rosa established two well known conjectures: all trees are graceful (1966) and all triangular cacti are graceful (1988). In order to contribute to both conjectures we study these problems in the context of graph games. The graceful game was introduced by Tuza in 2017 as a two-players game on a connected graph in which the players Alice and Bob take turns labeling the vertices with distinct integers from 0 to m. Alice’s goal is to gracefully label the graph as Bob’s goal is to prevent it from happening. In this work, we present the first results in this area by showing winning strategies for Alice and Bob in complete graphs, paths, cycles, complete bipartite graphs, caterpillars, prisms, wheels, helms, webs, gear graphs, hypercubes and some powers of paths.
Explorando o nível de atividade do usuário para melhorar a precisão dos sistemas de recomendação de pontos de interesse
Authors: Rocha Leonardo , Silva Nícollas , Chaves Luiz
Published: February 2021

Sistemas de Recomendação (SsR) são aplicados em diversos cenários, tais como comércio eletrônico e, atualmente, em Redes Sociais Baseadas em Localização para recomendar pontos de interesse (POIs). Para cenário de POIs é necessário considerar a influência geográfica deles. As propostas atuais não alcançam resultados satisfatórios. Neste trabalho, abrimos uma nova perspectiva de pesquisa, propondo uma abordagem de pós-processamento que pode ser usada com qualquer SR. Medimos o nı́vel de atividade dos usuários em diferentes subáreas de uma cidade e o usamos para  reordenar os POIs recuperados. Avaliamos nossa proposta considerando seis SsR e três conjuntos de dados do Yelp, obtendo ganhos de até 15% de precisão.
Improving Monte Carlo Localization with Strategic Navigation Policies and Optimal Landmark Placement
Authors: Figueiredo Daniel , Dos Santos Ferreira Júnior Henrique José
Published: February 2021

An important problem in robotics is to determine and maintain the position of a robot that moves through a known environment with indistinguishable landmarks. This problem is made difficult due to the inherent noise in robot movement and sensor readings. Monte Carlo Localization (MCL) is a frequently used technique to solve this problem, and its performance intuitively depends on how the robot explores the environment and the position of the landmarks. In this paper, we propose a navigation policy to reduce the number of steps required by the robot to find its location together with the optimal landmark placement for this policy. This proposal is evaluated and compared against other policies using two specific metrics that indicate its superiority.
Metaheurística Grasp aplicada na resolução de Problemas de Sequenciamento baseados em Grafo de Conflito
Authors: Menezes Gustavo , Silva Raphael
Published: February 2021

Em diversas aplicações há a necessidade de agendar tarefas em uma linha de produção / transporte e deseja-se obter um agendamento que minimize o tempo gasto para concluí-las. Quando essas tarefas possuem conflitos entre si, isto é, quando algumas delas não podem ser executadas ao mesmo tempo que outras, temos um problema complexo. Uma especificação desse problema ocorre em sistemas de trasportes como terminais portuários que apresentam um sistema de rotas de cargas muito complexo e que possibilita uma grande quantidade de combinações possíveis. O objetivo desse estudo é buscar soluções Heurísticas baseadas em GRASP pra otimizar essas rotas, reduzindo assim o tempo para carregar e descarregar os navios.
Monitoramento de Consumo de Televisores Através de uma Plataforma
Authors: Barboza da Costa Luiz Fernando , Carvalho Wallace
Published: February 2021

Os avanços tecnológicos nos permitem alcançar um crescimento que pensávamos estar longe de nós, como por exemplo uma boa qualidade de vida, e otimização dos nossos recursos naturais. A automação residencial surge como alternativa viável para o controle de consumo de energia elétrica e também possibilita a utilização em diversos meios de aplicações. Atualmente algumas residências já estão implementando algumas tecnologias que possibilitam reduzir custos, e economizar luz e água. Este projeto visa demonstrar que através desses avanços, somos capazes de reduzir os custos de consumo de energia elétrica e com isso gastar menos e preservar ainda mais nosso meio ambiente.
Sistema Para Monitoramento e Detecção de Falhas Relacionadas à Disponibilidade de Redes Wi-Fi
Authors: Correa Claudio , Pereira Valsirene
Published: February 2021

O objetivo geral desse trabalho é propor um modelo de arquitetura para auxiliar o monitoramento e a detecção de falhas relacionadas à disponibilidade de redes Wi-Fi. O objetivo específico desse modelo é permitir o desenvolvimento de uma aplicação independente da infraestrutura física existente, para auxiliar o suporte nas iniciativas de controle e diagnóstico de indisponibilidades e interrupções não programadas referentes às redes Wi-Fi. Devido às características propostas pela arquitetura, como baixo custo dos dispositivos utilizados e possibilidade de monitoramento remoto, torna-se viável a sua implementação, pois se mostra como uma ferramenta capaz de apoiar na identificação de inconsistências referentes à disponibilidade desses tipos de redes.
O Uso de Técnicas de Reconhecimento de Padrões na Detecção de Padrões de Ataque em IDS
Authors: Mourão Pedro , Souza Flávio
Published: February 2021

O Sistema de detecção de Intrusão estabelece algumas diretrizes para identificação de ataques em um sistema, porém possui algumas deficiências. Nesse contexto, a utilização de técnicas de reconhecimento de padrões pode auxiliar a detecção desses ataques. Assim, o objetivo deste trabalho é, apresentar o processo de calibração dessas técnicas e avaliar o seu desempenho em um computador de baixa performance.
Neokoloniale Strukturen in der internationalen Klimapolitik
Authors: Rahman Lea
Published: February 2021

Climate change is not just one of the main problems of this century, it rather is a matter of justice: It was particularly caused by western industrialized countries and now hits all states bit by bit – regardless of the question of guilt. The author studies how states struggle for solutions and binding rules at the annual Climate Change conferences and which of the proposals have prevailed. Using approaches of the postcolonial theory, she examines which power relations that are tracing back to colonialism still exist at the political, economic and epistemic level.
»The Whole World«
Authors: Heitmann Annegret
Published: February 2021

The bilingual oeuvre of Karen Blixen/Isak Dinesen contains many traces of inescapable connections and distant reverberations from the entire world: relations to far-off places, figures of mobility and foreignness; a ‘global mix’ of literary forms; innumerable references to intertextual works from world literature; and provocative perceptions of the world. Drawing upon globalisation theories, this study is the first to focus on this hitherto neglected aspect of Blixen’s/Dinesen´s relationship to the world, which runs right through the anecdotes, figures and tropes in her work. In their engagement with the world as a whole, her narratives reflect models and dynamics of globality, while aesthetically representing connectivity and an awareness of foreignness.
Radiological Characteristics of Patients Infected with Coronavirus Disease-2019 (COVID-19): A Retrospective, Observational Study from Iran
Authors: Panahi Latif , Etebarian Khorasgani Abolfazl , Amiri Marzieh , Pouy Somaye
Published: February 2021

Background: Management of Covid-19 patients is key to control the pandemic. In this line, access to chest Computed Tomography (CT) scan findings and investigating changes during initial diagnosis until recovery is of crucial importance. Objectives: The present study aimed to investigate the chest CT-scan findings of patients with a definitive diagnosis of Covid-19 in Guilan, Iran. Methods: In this retrospective study, 1000 patients with a definitive diagnosis of Covid-19, from 20 April to 30 July 2020, were enrolled. Their first and follow-up chest CT-scans were obtained. Total lung involvement was determined by the number of lobes involved and by scoring 0 to 5 for each lobe (5 lobes, lowest score: 0, and highest score: 25). Results: In this study, three CT-scans of all 1000 patients were studied. Patients were classified into 4 stages according to their hospitalization duration (ranging from 0 to 30 days): stage 1 or primary (0 to 7 days): ground-glass opacities (n = 178 or 89%), stage 2 or progressive (8 to 15 days): increased crazy-paving pattern (n = 89 or 44.5%), stage 3 or peak involvement (16 to 22 days): consolidation (n = 78 or 89%), and stage 4 or decreased pulmonary involvement severity (greater than 23 Day): the gradual resolution of consolidation (n = 178 or 89%). Conclusions: Chest CT-scan findings revealed that patients with Covid-19 had a high rate of pulmonary involvement, on average, for the first 15 days, which then declined.
Validation of Pediatric Index of Mortality 3 in a Single Referral Pediatric Intensive Care Unit in Iran
Authors: Saidi Hossein , Basir Ghafouri Hamed , Aghdam Hamed , Khanbabaei Ghamartaj , Ahmadizadeh Narges , Ahmadi Atefeh
Published: February 2021

Objectives: The research aimed to evaluate the Pediatric Index of Mortality 3 (PIM-3) for determining the risk of mortality among pediatric intensive care unit patients. Methods: A retrospective analysis was conducted on case records, as well as patient data from all admissions to the PICU of Mofid Children’s Hospital, Tehran, from October 2017 to February 2018. Employing an android calculator application, the PIM-3 score was estimated early within the first PICU admission. Then, the PIM-3 score and mortality rate were analyzed using the Mann-Whitney U test. In addition, calibration and discrimination were assessed by the Hosmer-Lemeshow goodness-of-fit test and a receiver operating characteristic curve method, respectively. Finally, the Standardized Mortality Ratio (SMR) was calculated. Results: In this study, 365 young infants, ranging from 10 to 29-months-old, were included. The overall mortality rate was 10.4%. Further, the patients’ PIM-3 scores ranged from 0.06% to 2.37% (95% confidence interval), with a mean of 1.45% (4.16% in non-survivors and 1.14% in survivors). The SMR was estimated at 7.18, demonstrating the underprediction of the death rate. The AUC of 0.714 (95% CI: 0.626 to 0.801) demonstrated a fair to good discrimination power of PIM-3 as an international standard risk-adjusted mortality indicator. Moreover, this score underpredicted the risk of mortality in young infants admitted to our ICU in 2017. Generally, the prediction was weak among low-risk patients. Therefore, the Pediatric Index of Mortality-3 score has the potential to be implemented in our PICU by modifying the expected probability of death by multiplying the original PIM-3 score by 7.12.
Isolated Chronic Aseptic Meningitis Due to SARS-COV-2 Unresponsive to Ordinary Treatments
Authors: Karimi Abdollah , Rafiei Tabatabaei Sedigheh , Shariatpanahi Ghazal , Javadzadeh Mohsen , Armin Shahnaz , Yeganeh Zahra
Published: February 2021

: Serious, and sometimes, deadly complications of coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are devastating. Whereas most manifestations of COVID-19 are respiratory (fever, dry cough, fatigue, pneumonia), it is getting to be progressively recognized that numerous organ functions can be affected by this disease, and the nervous system is one of them as neurological complications can affect up to 36% of adult patients. However, the prevalence and pathophysiology of these complications have yet to be fully elucidated in children. Here, we discuss an infant with neurological symptoms manifested as chronic isolated aseptic meningitis associated with COVID-19, which was unresponsive to ordinary treatments and dramatically responsive to dexamethasone. Immune-mediated reactions may have had a major pathophysiologic role in this case.