bluuebunny/crossref_metadata_2025 huggingface dataset:
Entrevista com Eric Nepomuceno
Authors: Blet Luz Mariana
Published: August 2022

Eric Nepomuceno é jornalista, escritor e tradutor. Nascido em 1948, começou a trabalhar como jornalista em meados da década de 1960. De 1969 a 1976 trabalhou no Jornal da tarde, de São Paulo, onde foi enviado como correspondente a diversos países da América Latina.
Nepomuceno é reconhecido internacionalmente por ter traduzido para o português diversos gigantes da literatura hispânico-americana, como Gabriel García Marquez, Eduardo Galeano, Juan Rulfo, Julio Cortázar, entre outros.
A transformação de um projeto de modelagem em um exercício de matemática
Authors: Campos Ilaine Da Silva
Published: August 2022

O objetivo do artigo é compreender como um grupo de estudantes transformou um projeto de Modelagem em um modelo semelhante a um exercício de matemática. A análise das ações dos estudantes é realizada usando a Teoria Histórico-Cultural da Atividade. Os sujeitos são estudantes de uma turma de 3º Ano do curso Técnico Integrado ao Ensino Médio em Meio Ambiente, do Instituto Federal de Minas Gerais, do campus de Governador Valadares. O estudo é de natureza qualitativa e os dados analisados são oriundos de observações participante, do relatório escrito e da apresentação do grupo para a turma. A partir da análise dos dados, é possível compreender que no resultado do projeto de Modelagem prevaleceram as regras historicamente validadas em uma atividade de matemática, mas que essas foram confrontadas no decorrer do desenvolvimento do projeto com as regras específicas de um ambiente de aprendizagem de Modelagem. Os resultados indicam a importância da explicitação e problematização das regras de ambientes de aprendizagem de Modelagem para a inserção de atividades dessa natureza em sala de aula e a pertinência de se conhecer as potencialidade e especificidades da Modelagem em cursos técnicos.
Uma proposta para trabalhar polígonos nas aulas de matemática por meio da robótica educacional
Authors: Pavanelo Elisangela , Cayres Henrique Maciel , Santos Rogério Rodrigues dos
Published: August 2022

O presente artigo traz uma proposta de atividade que explora conceitos matemáticos de geometria, mais especificamente os polígonos, além de conceitos de programação comuns à Robótica Educacional. Esta proposta de trabalho está em consonância com a abordagem construcionista de Papert, uma vez que um ambiente com fundamentação robótica tipicamente requer a existência de programas responsáveis pela determinação do movimento dos robôs e é propício à experimentação. Inspirada, inicialmente, na linguagem de programação LOGO, a proposta de trabalho constitui uma sugestão de atividade para professores e estudantes da Educação Básica. A utilização do robô para a realização da atividade levou ao desenvolvimento de um software denominado “AutoPlay”, responsável pela comunicação entre o computador e o nosso robô. A análise dos referenciais teóricos conjuntamente com a elaboração das atividades permitiu concluirmos que, por meio destas atividades, temos a possibilidade de explorar com os alunos conceitos relacionados à matemática e programação de uma forma imersiva e relevante. Acreditamos que a presente proposta potencializa a exploração e compreensão dos conceitos, de forma a integrar elementos de Robótica Educacional na modernização do ensino de matemática para a Educação Básica.
Resolução de problemas do campo multiplicativo e surdez: uma revisão bibliográfica
Authors: Tavares Scarpelli Raquel , Segadas Vianna Claudia Coelho de , Pereira Madalena Silene
Published: August 2022

Neste artigo, buscamos apresentar ao leitor o resultado de uma revisão bibliográfica sistematizada  realizada a partir de artigos científicos nacionais e internacionais publicados no período de 1930 a 2019 sobre problemas matemáticos no campo multiplicativo no escopo do ensino e aprendizagem de surdos. A escolha por um período de 90 anos tem por objetivo averiguar a evolução dessa temática no meio acadêmico brasileiro e internacional ao longo do tempo. Nosso principal intuito foi o de buscar identificar que enfoques têm sido mais frequentes nesses artigos e observar se eles têm ou não se mantido constantes. Como critério de seleção dos periódicos, foram utilizadas buscas com palavras-chave específicas que façam uma combinação entre  surdez e problemas do campo multiplicativo em plataformas online de pesquisas acadêmicas. Como resultado, obtivemos 12 artigos, dos quais emergiram três categorias: identificação de dificuldades dos alunos surdos em aritmética, análise do modo como os alunos surdos operacionalizam a multiplicação e práticas docentes em sala de aula no ensino de aritmética para alunos surdos.
A organização didática dos professores bilíngues marcada pelo seu habitus
Authors: Morás Nadjanara Ana Basso , Nogueira Clélia Maria Ignatius , Farias Luiz Marcio Santos
Published: August 2022

O objetivo desse estudo é identificar na organização didática dos professores bilíngues (surdos e ouvintes) da mesma escola, com abordagem bilíngue para surdos, se apresentariam escolhas diferentes de ostensivos, particularmente relacionados às suas especificidades. Para empreender essa identificação apoiamo-nos nas noções de habitus e de campos propostas por Pierre Bourdieu, e também em alguns elementos da Teoria Antropológica do Didático de Yves Chevallard, em especial as noções de organizações matemática e didática, e de objetos ostensivos e não ostensivos. Percebemos que, as organizações didáticas, dos professores bilíngues (surdos e ouvintes), estão próximas da explicação de Bourdieu a respeito de habitus, ou seja, da incorporação de uma determinada estrutura social pelos indivíduos, influindo em seu modo de sentir, pensar e agir.
Desenho geométrico no ensino de matemática: uma proposta com o amuleto indígena filtro dos sonhos
Authors: Correia Nickson Deyvis da Silva , Santos Viviane De Oliveira , Albuquerque Erenilda Severina da Conceição
Published: August 2022

Este trabalho tem o objetivo de descrever o processo de elaboração e os resultados da aplicação da atividade “Filtro dos Sonhos: o desenho geométrico do amuleto indígena”, desenvolvida no projeto de extensão “Sem mais nem menos on-line”, da Universidade Federal de Alagoas. A atividade teve como finalidade construir o Filtro dos Sonhos por meio do desenho geométrico e explorar conteúdos matemáticos e aspectos da cultura indígena, proporcionando aos estudantes um momento descontraído para aprender Matemática e despertando nos professores o desejo de desenvolver outras possibilidades para ensinar Matemática. Sua aplicação foi a 207 estudantes de 2 estados brasileiros do Ensino Fundamental - Anos Finais e Ensino Médio e os conteúdos matemáticos explorados foram noções básicas da geometria plana, círculo, circunferência, polígonos inscritos e circunscritos à circunferência. Os resultados da aplicação refletem que a atividade alcançou seu objetivo, sendo um momento de descontração, trabalhando o desenho geométrico numa temática do cotidiano. Além disso, professores puderam ampliar o conhecimento de como ensinar Matemática com outras contextualizações. Esperamos que este trabalho desperte nos professores de Matemática a vontade de proporcionar aos seus estudantes novas formas de adquirir e aprofundar conhecimentos matemáticos, utilizando temas presentes no cotidiano deles e materiais didáticos como a atividade aqui descrita.
Os números da robótica pedagógica aplicada à educação básica no brasil a partir de um mapeamento sistemático da literatura
Authors: Brito Robson Souto , Sabbatini Marcelo
Published: August 2022

Na contemporaneidade, a robótica se revela uma área fundamental para o desenvolvimento tecnológico, científico e econômico de um país, além de consistir numa tecnologia educacional capaz de ser incorporada ao processo pedagógico na Educação Básica, envolvendo criatividade, motivação e aprendizagem significativa. Nosso objetivo de pesquisa foi identificar as regiões e as instituições brasileiras que produziram pesquisas em nível de Mestrado e Doutorado em Robótica Pedagógica (RP) no Brasil com foco na Educação Básica, no período 2001-2017. Para tanto, realizamos um Mapeamento Sistemático de Literatura cuja base de dados foi a Biblioteca Digital de Teses e Dissertações (BDTD). As pesquisas foram analisadas, sobretudo do ponto vista da sua localização regional e institucional e também do setor financiador. Foram identificadas 41 Dissertações e sete Teses. Os resultados mostram que a pesquisa brasileira em Robótica Pedagógica se concentra nas regiões Sul (33%), Nordeste (29%) e Sudeste (27%), com a produção concentrada 75% em apenas cinco Estados. Em sua maioria (86%) são financiadas pelo poder público. Também verificamos as predominâncias das instituições públicas, especialmente universidades, como maiores produtoras de pesquisa na temática; juntas, essas instituições foram responsáveis por quase metade da produção científica. Dessa forma, consideramos que num país continental como o Brasil, a centralização da produção científica pode gerar uma situação de indiferença da comunidade discente daquelas regiões para com a temática Robótica Pedagógica. Ainda mais, lacunas como a ausência de teorização na pesquisa em RP, associada à fragilidade na formação de doutores nessa área pode comprometer os componentes fundamentais da institucionalização do conhecimento, o ensino e a pesquisa e aponta para a necessidade de ampliação do número de linhas de pesquisa dos programas de Pós-graduação em Educação/Ensino.
Contribuições da metodologia análise de erro para o ensino e aprendizagem da análise combinatória no ensino médio
Authors: Coelho Levy De Oliveira , Dias Mônica Souto da Silva
Published: August 2022

Esse estudo analisou as soluções de alunos do Ensino Médio ao resolverem questões de Análise Combinatória apresentadas no Exame Nacional do Ensino Médio (ENEM). O objetivo deste trabalho é investigar de que modo a metodologia de ensino e aprendizagem Análise de Erros pode contribuir para a construção de conhecimentos em Análise Combinatória. Os instrumentos de coleta de dados foram um questionário sobre o perfil do aluno, uma atividade diagnóstica com questões do ENEM abordando os principais conceitos do conteúdo escolar da Análise Combinatória, e uma entrevista clínica. Por meio da metodologia da Análise de Erro, foi possível elaborar uma classificação das respostas dos estudantes na atividade diagnóstica, pela qual foram mapeados os tipos de erros e acertos com relação ao conteúdo. Os resultados mostraram que os participantes da investigação apresentaram maior domínio no uso do Princípio Multiplicativo. As fórmulas de Arranjo e Combinação foram as que mais estiveram relacionadas ao uso incorreto para os cálculos das possibilidades. A metodologia de Análise de Erro contribui para o ensino e aprendizagem da Análise Combinatória na medida em que abre espaço para o aluno rever a sua resolução, refletir sobre ela com a orientação do professor e rever suas estratégias. Este processo pode contribuir com a construção do conhecimento matemático pelo aluno.
Risk Factor Analysis Of Nurse’s Depression Level Using The Beck Depression Inventory Method In The Isolation Room For Covid-19 Patients Royal Prima Medan In 2022
Authors: Leoditta Sitinjak Vivian , Girsang Ermi , Napiah Nasution Ali
Published: August 2022

This Corona Virus has been named SARS-CoV 2 and this virus moves from human to human through direct contact and has symptoms ranging from mild to severe. Nurses can experience psychological disorders in the form of depression because they are directly involved in treating Covid-19 patients. The purpose of this study was to analyze risk factors (working time, risk of exposure, workload, stigma, and social support) on the level of depression of nurses using the Beck Depression Inventory method in the isolation room for Covid-19 patients at Royal Prima Hospital Medan in 2022. The type of research used is an analytical study with a cross-sectional approach with primary and secondary data collection in February - March 2022. The number of research samples is 95 nurses who work in the Covid-19 isolation room. The data were analyzed univariately to see a descriptive picture, bivariate using the product-moment test, and multivariate by using the multiple logistic regression test. The results of this study are; based on age the most in the age group 20-30 years (93.7%), gender, dominated by women (73.7%). Based on education, it was found nurses with a Diploma education (75.8%), work 1-2 years (50.5%). Based on marital status, predominately single (76%). In the bivariate analysis, there was a relationship between risk factors and the level of depression of nurses in the Covid-19 isolation room at Royal Prima Hospital Medan in 2022. In the multivariate analysis, working time (0.007), risk of exposure (0.003), workload (0.002), stigma (0.024) ), and social support (0.012). The conclusion of this study is that there is an influence of risk factors on the level of depression of nurses in the Covid-19 isolation room at Royal Prima Hospital Medan in 2022.
Analysis That Influences The Quality Of Nursing Services In Installations Of Colonel Abunjani Hospital, Bangko In 2019
Authors: Abdi Eliezer Dakhi Juang , Lestari Ramadhani Nasution Sri , Girsang Ermi , Suryono Tan
Published: August 2022

The implementation of hospital health services in Indonesia currently faces increasingly complex challenges. The improvement of hospital quality must be improved in accordance with the development of the needs and demands of the community, accompanied by an increase in efficiency and productivity in the field of management, in accordance with the hospital's minimum service standards, professional standards, and standard operating procedures. The study aims to determine the relationship of knowledge, skills, behavior, education, experience, and motivation of nurses with the quality of nursing services at the kolonel abunjani bangko Hospital in 2019. This observational analytic study uses a Cross Sectional design. Chi square statistical test and multiple logistic regression regression were used to analyze data. The population and sample size in this study were 92 nurses where data collection was taken from the results of the questionnaire. The results of the bivariate analysis showed that there was a relationship of knowledge, skills, behavior, potential, education, experience, and motivation with the quality of nursing services at the kolonel abunjani bangko Hospital  in 2019. The results of multivariate analysis showed that experience was the most dominant variable affecting quality service. Conclusions obtained are the relationship of knowledge, skills, behavior, potential, education, experience, and motivation of nurses with the quality of nursing services in kolonel abunjani bangko Hospital in 2019. It is recommended to the hospital, to continue to improve knowledge, skills, behavior, education, experience, and continuous motivation. By increasing competence and continuous performance, the nurse's weaknesses and strengths can be known. Thus, good nurse competency can give satisfaction to patients and provide job promotion so as to improve the work performance of nurses so that they can increase the quality of health services.
Analysis Of Inpatient Medical Record Management Based On Medical Record Service Standards At Government Hospitals In Medan
Authors: Hasan Basri Nasution Muhammad , Wahyuni Sri , Eliza Putri Lubis Yolanda , Napiah Nasution Ali
Published: August 2022

Inpatient medical records have an important role as a source of data and health information for inpatients related to treatment and care planning. The main factor that causes problems in inpatient medical records is the undisciplined factor of the person in charge who handles patients in filling out medical records. This can cause inpatient medical record management, not in accordance with medical record service standards. This study aimed to analyze inpatient medical record management based on medical record service standards. This research is a quantitative analytic study with a cross-sectional approach. The study was conducted at the Government Hospital in Medan. The research population was 126 people and all of them were used as samples. Sampling by means of total sampling. Data analysis used univariate, bivariate with chi-square test, and multivariate with multiple logistic regression at 95% confidence level (0.05). The results showed that inpatient medical record management implementation based on medical record service standards at the Government Hospital in Medan was influenced by work motivation (p  =  0.001)  and supervision (p = 0.000). While the variables that have no effect are length of work (p = 1,000), education (p = 0.848), teamwork (p = 0.241), and completeness of infrastructure (p = 0.760). The supervision variable is the most dominant variable or has the greatest influence with the value of Exp(B)/OR = 19,542. Medical record employees who state that supervision is carried out well by superiors will improve the implementation of inpatient medical record management well, compared to those who state that supervision is still not good. It is recommended that the leadership carry out inherent supervision (waskat) to all medical record employees and provide motivation through motivational seminars to improve the implementation of inpatient medical record management based on medical record service standards.
Improved retrieval of SO2 plume height from TROPOMI using an iterative Covariance-Based Retrieval Algorithm
Authors: Theys Nicolas , Lerot Christophe , Brenot Hugues , van Gent Jeroen , De Smedt Isabelle , Clarisse Lieven , Burton Mike , Varnam Matthew , Hayer Catherine , Esse Benjamin , Van Roozendael Michel
Published: August 2022

Abstract. Knowledge of sulfur dioxide layer height (SO2 LH) is important to
understand volcanic eruption processes, the climate impact of SO2
emissions and to mitigate volcanic risk for civil aviation. However, the
estimation of SO2 LH from ground-based instruments is challenging in
particular for rapidly evolving and sustained eruptions. Satellite
wide-swath nadir observations have the advantage to cover large-scale plumes
and the potential to provide key information on SO2 LH. In the
ultraviolet, SO2 LH retrievals leverage the fact that, for large
SO2 columns, the light path and its associated air mass factor (AMF)
depends on the SO2 absorption (and therefore on the vertical
distribution of SO2), and SO2 LH information can be obtained from
the analysis of measured back-scattered radiances coupled with radiative
transfer simulations. However, existing algorithms are mainly sensitive to
SO2 LH for SO2 vertical columns of at least 20 DU. Here we develop
a new SO2 LH algorithm and apply it to observations from the high-spatial-resolution TROPOspheric Monitoring Instrument (TROPOMI). It is based
on an SO2 optical depth look-up table and an iterative approach. The
strength of this scheme lies in the fact that it is a Covariance-Based
Retrieval Algorithm (COBRA; Theys et al., 2021). This means that the
SO2-free contribution of the measured optical depth is treated in an
optimal way, resulting in an improvement of the SO2 LH sensitivity to
SO2 columns as low as 5 DU, with a precision better than 2 km. We
demonstrate the value of this new data through a number of examples and
comparison with satellite plume height estimates (from IASI and CALIOP), and
back-trajectory analyses. The comparisons indicate an SO2 LH accuracy
of 1–2 km, except for some difficult observation conditions, in particular
for optically thick ash plumes or partially SO2-filled scenes.
Small-scale ionospheric irregularities and their effects on GNSS - A status Report
Authors: Berdermann Jens
Published: August 2022

Trans-ionospheric radio signals of global navigation satellite systems (GNSS) like GPS, GLONASS, GALILEO and BeiDou may suffer from rapid and intensive fluctuations of their amplitude and phase caused by small-scale irregularities of the ionospheric plasma. Such disturbances occur frequently in the equatorial region during the evening hours due to plasma flow inversion or during geomagnetic storms in the polar region. This phenomenon is called radio scintillation and can strongly disturb or even disrupt the signal transmission. We like to present an overview of the latest results as well as present and future work with respect to monitoring, modelling and forecasting of small-scale ionospheric irregularities. We will also discuss the scintillation impact on GNSS and possible mitigation measures. The work presented are results from the Working Group 4.3.5 of IAG Sub-Commission 4.3.
Estimation of absolute group delay variations of GNSS satellite antennas
Authors: Beer Susanne , Wanninger Lambert , Heßelbarth Anja
Published: August 2022

Group delay variations (GDV) of GNSS satellite and receiver antennas affect GNSS code pseudoranges. GDV are frequency-dependent and vary with signal transmission and receiving direction due to direction-dependent properties of the satellite and receiver antennas. Since GNSS code measurements contain both the GDV of the satellite and that of the receiver antenna, the exact separation of both parts is a special challenge. It only becomes possible if absolute GDV are available for one of the antennas. Based on absolute GDV of four receiver antenna types (Wübbena et al. 2019), observations of terrestrial reference stations, and the code-minus-carrier linear combination, we estimated GDV for a large part of the satellite antennas of GPS, GLONASS, Galileo, BeiDou, and QZSS (Beer et al. 2021). Aside from the BeiDou‑2 satellites, whose GDV are known to amount to 1.5 m, GPS satellites show the largest variations of several decimeters on frequencies L1 und L5, and also the largest satellite-to-satellite variations within a constellation. The GDV at frequency bands L2, E1, and B2a/B2b of GPS IIIA, Galileo, and BeiDou-3 satellite antennas, respectively, stay below 10 cm and are the least affected. It is shown that terrestrial observations of one orbit period are sufficient to estimate the GDV of each satellite antenna for its entire nadir angle range, and that orbit periods of several sidereal days significantly facilitate data acquisition.

Wübbena G, Schmitz M, Warneke A (2019) Geo++ absolute multifrequency GNSS antenna calibration. EUREF AC workshop, Warsaw, Poland. http://www.geopp.com/pdf/gpp_cal125_euref19_p.pdf

Beer S, Wanninger L, Heßelbarth A (2021) Estimation of absolute GNSS satellite antenna group delay variations based on those of absolute receiver antenna group delays. GPS Solut 25, 110 (2021). https://doi.org/10.1007/s10291-021-01137-8
On the potential of future observation types for the next generation GNSS
Authors: Schreiner Patrick , König Rolf , Glaser Susanne , Raut Shrishail , Neumayer Karl Hans , Schuh Harald
Published: August 2022

Over the last decades, Global Navigation Satellite Systems (GNSS) have become one of the standards for positioning applications with highest precision. However, uncertainties in the modeling of f.i. solar radiation pressure (SRP) are still an important limiting effect in orbit modeling and hinder for example the accurate and reliable estimation of the origin of GNSS-based terrestrial reference frames (TRF). Therefore, current developments strive for observation types that can improve the absolute accuracy of the orbit as well as of the derived products. For example, the next generation GNSS, proposed by the German Aerospace Center (DLR) under the name "Kepler" as a concept for a future satellite constellation, involves the use of optical inter-satellite links (OISL), which have demonstrated to hold great potential for improving accuracies and decorrelating solved-for parameters. Building on this concept, we investigate the potential of other possible observation types for a future GNSS constellation using highly realistic simulations. To this end, we use not only OISL, but also accelerometer and attitude data, as well as the synchronization of the satellite clocks via the OISLs between the satellites. We evaluate the potential of these techniques each by itself and in combination in terms of orbital accuracy and formal errors as well as correlations of the solved-for parameters.
On the design of robust and consistent metrics for the stability of receiver antenna calibration sets
Authors: Kersten Tobias , Dawidowicz Karol , Krzan Grzegorz , Kröger Johannes , Schön Steffen
Published: August 2022

The bottleneck of precise GNSS based applications is caused by the receiver antenna and their precision and accuracy. This work aims to contribute to the design of a model and the development of metrics to estimate and evaluate GPS/GNSS antenna calibration values in several networks. At present, there is neither information on the absolute accuracy of antenna calibration values nor a consistent handling of their uncertainties. Rather, these uncertainties repeatedly introduce inaccuracies into time series, which are used to determine global and regional reference frames as a basis for a broad variety of geophysical approaches such as meteorology, hydrography, etc. Several contributions have addressed the issue of the desired quality of GNSS receiver antenna calibrations and the assessment of their impact on GNSS data processing. All approaches lead to the open question regarding the precision and accuracy as well as stability of receiver antenna phase centre corrections. However, comprehensive and fundamental answers to this scientific question are difficult to achieve as complex interactions prevent simple estimation.

In this paper, the authors present results regarding the stability of receiver antenna calibrations in the context of time, calibration facility and strategy to help GNSS operators of regional and global GNSS stations to estimate the impact of calibration values on their sites. The quality of the calibration values also has a direct impact on the derived results, such as the zenith path delay (ZPD). We show that deviations of up to 5 mm for different high-grade antenna types occur. In addition, the normal distribution of pattern differences deviations and systematic effects have been found that lead to drifts and offsets in the parameter domain. The frequency dependence is underlined as well, e.g. L1 versus L2(P) and L2(C). The temporal stability of the calibration values is a fundamental issue, which is discussed in this context. Based on a sample of more than 30 different geodetic grade antennas, we identified variations like drifts and azimuth dependencies with magnitudes of up to 5 mm on each individual frequencies. Furthermore, the stability of the type mean versus individual calibrations shows larger differences on the signals L2 and hence leads to higher variances in the derived ionosphere-free linear combination. The results are examined using PPP time series. The derivation of metrics will be an important step to improve the consistency of regional and global GNSS products.
Multi-GNSS tomography: Case study of the flood in Europe in July 2021
Authors: Wilgan Karina , Brenot Hugues , Bender Michael , Biondi Ricardo , Dick Galina , Zus Florian , Wickert Jens
Published: August 2022

Due to climate change, intensive storms and severe precipitation will continue to happen, causing destructive flooding. These natural hazards have dramatic impact on humanity. In July 2021, a series of storms with prolonged rain episodes took place over Europe. Several countries were affected by severe floods that followed that rainfall, causing many deaths and material damage. A good understanding and forecasting of severe weather events is thus of uttermost importance.

This study is a combined effort of two research projects: Advanced MUlti-GNSS Array for Monitoring Severe Weather Events (AMUSE) funded by the German Research Foundation DFG and the ALARM äH2020 SESAR project from EU (https://alarm-project.eu). We highlight the interest of multi-GNSS tomography for the 3D-modelling of the neutral atmosphere refractivity and the water vapour density. We obtain these tropospheric parameters for the July 2021 flood in Germany and four tomographic solutions with different constraining options and time resolutions using either GPS only or multi-GNSS estimates. In the constrained solution, we take hourly a priori information from the numerical weather model ICON-D2 (provided by the German Weather Service, DWD), while in the stand-alone solution, the a priori is used only to initiate the tomography. Our investigations show that the stand-alone solution is producing more patterns of refractivity, especially for the multi-GNSS solution, while is it also temporally more stable. We compare the tomographic results with external observations such as radiosondes and GNSS radio occultations from Metop-A and Metop-B satellites. The results show that tomography is producing wetter conditions than the reference data sources. However, we can see the precursor information of the initiation of deep convection in the ground-based GNSS technique.
Quantum diamond magnetometry for navigation in GNSS denied environments
Authors: Greentree Andrew , Wang Xuezhi , Li Wenchao , gibson brant , Moran William , Hall Liam , Simpson David , Kealy Allison
Published: August 2022

Satellite-based navigation has been a transformational technology that underpins almost all aspects of modern life. However, there are environments where global navigation satellite systems (GNSS) are not available, for example undersea or underground, and navigation that is robust to GNSS outages are also required for resilient systems.  In this context, we are exploring the potential for quantum diamond magnetometers to be used as aids for inertial measurement units for navigation in GNSS-denied environments.  We perform simulations of the magnetic field measurements combined with probabilistic data association for data mapping; and probabilistic multiple hypotheses (or Viterbi) map matching filters.  These methods are used to explore the expected navigation errors available to scalar and vector magnetometry with diamond at the sensitivities available using current and expected near-term devices.  Here we show some of our preliminary results as well as providing a broader overview of diamond as a quantum magnetometery.
Campaign studies for investigating the coupling processes in the thermosphere and ionosphere
Authors: Borries Claudia , Sato Hiroatsu , Günzkofer Florian , Yaroshenko Victoriya , Pokhotelov Dimitry
Published: August 2022

The thermosphere and ionosphere (TI) system, which represent neutral and charged particles respectively in the upper atmosphere in more than 80 km altitude, is characterized by highly variable electrodynamic processes. Changes in the thermosphere find their response in the ionosphere and vice versa. The TI system is driven to a large extend by forcing from the Sun causing a typical daily, seasonal, 11-year and other regional variability. Solar forcing also includes storm conditions, when suddenly large amounts of solar wind energy is transferred into the TI system, resulting in significant changes in thermosphere and ionosphere conditions. Although the solar forcing dominates the TI variability, the dynamics and chemistry from the atmosphere below do not have a neglectable influence, too.

In this presentation, I will show campaign studies with the EISCAT instrumentation in North-Norway, which reveal solar and atmosphere TI-coupling processes on different temporal and spatial scales. The observations are combined with modelling results from numerical models of the TI system.
GGOS Focus Area on Geodetic Space Weather Research – objectives and structure
Authors: Schmidt Michael , Forootan Ehsan
Published: August 2022

Space weather means a very up-to-date and interdisciplinary field of research. It describes physical processes in space mainly caused by the Sun’s radiation of energy. The manifestations of space weather are multiple, for instance, the variations of the Earth’s magnetic field or the changing states of the upper atmosphere, in particular the ionosphere and the thermosphere.

The main objectives of the Focus Area on Geodetic Space Weather Research (FA GSWR) are (1) the development of improved ionosphere models, (2) the development of improved thermosphere models, (3) the study of the coupled processes between magnetosphere, ionosphere and thermosphere (MIT) and (4) the improved understanding of space weather events and their monitoring by space observations (geodetic and non-geodetic).

Objective (1) aims at the high-precision and the high-resolution (spatial and temporal) modelling of the electron density. This allows to compute a signal propagation delay, which will be used in many geodetic applications, in particular in positioning, navigation and timing (PNT). Moreover, it is also important for other techniques using electromagnetic waves, such as satellite- or radio-communications. Concerning objective (2), satellite geodesy will obviously benefit when working on Precise Orbit Determination (POD), but there are further technical matters like collision analysis or re-entry calculation, which will become more reliable when using high-precision and high-resolution thermospheric drag models. Objective (3) links the magnetosphere with the first two objectives by introducing physical laws and principles such as continuity, energy and momentum equations and solving partial differential equations. Objective (4) finally connects the improved understanding to the monitoring techniques and vice versa.      

To arrive at the above described objectives of the FA GSWR one Joint Study Group (JSG) and three Joint Working Groups (JWG) have been installed. In detail, these groups are titled as JSG 1: Coupling processes between magnetosphere, thermosphere and ionosphere, JWG 1: Electron density modelling, JWG 2: Improvement of thermosphere models, and JWG 3: Improved understanding of space weather events and their monitoring by satellite missions. Other implemented IAG Study and Working Groups within the IAG programme 2019 to 2023 will provide valuable input for the FA GSWR. In this presentation we provide an overview about the FA GSWR.
EGNOS Performance during Different Space Weather Conditions Over ECAC Region
Authors: Olabode Ayomide , Abe Oladipo , Cesaroni Claudio , Brack Andreas , Oluwadare Temitope , Nguyen Chinh , Schuh Harald
Published: August 2022

Regional Total Electron Content (TEC) Maps proffer better mitigation effects in ionospheric models which are needed to resolve ionospheric TEC gradient errors associated with space-based technologies such as Global Navigation Satellite Systems (GNSS) and Space-Based Augmentation Systems (SBAS). EGNOS (European Geostationary Navigation Overlay System) is a European SBAS system that provides integrity, accuracy, continuity and availability to critical GNSS applications like aviation and others over ECAC (European Civil Aviation Conference) area. The EGNOS Ionospheric model is built with the concept of the ordinary Planar fit technique. This paper focuses on modified Planar fit, ordinary Kriging and modified Kriging techniques to validate the EGNOS algorithm during different geophysical (geomagnetically quiet and disturbed) conditions. The structure of EGNOS was strictly adhered to during the study and only publicly available GNSS ground-based stations over the ECAC area are engaged in the study. The preliminary results obtained show that adapting modified Planar fit and Kriging techniques could improve the EGNOS services over the ECAC area, most especially the northern part near the high latitudes and the southern part near the low latitude regions.
Navigation Technologies for Future Autonomous Vehicles
Authors: El-Sheimy Naser
Published: August 2022

There are three ‘pillars’ that define the performance or usefulness of a navigation technologies – cost, accuracy, and continuity. Navigation is a field that has been fascinating humankind for thousands of years and these pillars have been evolving with new technological advancements.  The current market in positioning and navigation is clearly dominated by GNSS. Besides being globally available, it meets two important pillars: accuracy and cost by providing the whole range of navigation accuracies at very low cost. It is also highly portable, has low power consumption, and is well suited for integration with other sensors, communication links, and databases.

At this point in the development of navigation technology, the need for alternative positioning systems only arises because GNSS does meet the continuity pillar as it does not work in all environments. Furthermore, there has been a constant market push to develop navigation systems that are accurate, continuous and easy to afford. Needless to say, that cost, and space constraints are currently driving manufacturers of cars, portable devices (e.g. smartphones), and autonomous systems (e.g. self-driving, drones and agriculture machine systems) systems to investigate and develop next generation of low cost and small size navigation systems to meet the fast-growing autonomous vehicles and location services market demands. This presentation will provide a state of the art and future trends of sensors used for navigation of autonomous vehicles: possibilities, limitations and various design approaches.  Emphasis will be on sensors and technologies that can navigate autonomous vehicles everywhere and at any time independent of weather and light conditions. Some of the current developed and possible future system’s accuracy performance will be demonstrated through different implementations/applications using Propound Positioning Inc technologies.
Information-Based and Cooperative Positioning of Multi-Sensor-Systems by Extended Kalman Particle Filter
Authors: Moftizadeh Rozhin , Li Wenchao , Alkhatib Hamza , Kealy Allison
Published: August 2022

Nowadays, in engineering geodesy, Multi-Sensor-Systems (MSSs) have gained a significant amount of interest in data acquisition.  To make sense of the derived data and use it for multiple purposes, such systems need to be localized with respect to a global coordinate system. To do so, the most straightforward way is to use the Global Navigation Satellite System (GNSS) and Inertial Measurement Unit (IMU) data. However, such data are usually prone to errors, which should be overcome in the best way possible. One way to do so is to use beneficial information of the surrounding environment, which could be derived by other sensor types rather than the GNSS and IMU. An example of such sensors is a 3D scanner that could be used to capture the static information of a scene such as infrastructures. Moreover, the Ultra-Wide-Band (UWB) units could be used to establish a connection with the other nodes in the same environment and thus help to use potential dynamic information. Fusing various data derived from multiple sensors in a suitable filtering framework is another key to reach a reliable positioning solution. In this work, on the one hand we have explained our recent measurement campaign that was designed to cover the aforementioned aspects for capturing static and dynamic information. On the other hand, we have shown our proposed particle filtering methodology that could lead to reliable positioning solutions for MSSs that move in an inner-city area.
Demonstration of a fault impact reduction control module for wind turbines
Authors: Anderson Benjamin , Baring-Gould Edward
Published: August 2022

Abstract. Traditionally, wind turbines in distributed applications make control decisions as isolated systems. They generally provide maximum power output during operation and manage internal faults with little consideration of the rest of the power system. Although fault detection and tolerance schemes are widely researched and implemented, controls to ameliorate such faults are uncommon in research and industry. The rapid shutdown of a wind turbine in a large transmission-connected wind plant will have a minimal impact on a large power system, but in a microgrid or isolated grid context the abrupt loss of a single wind turbine may cause grid instability and high stress on the system. This paper demonstrates a fault impact reduction control (FIRC) module for a wind turbine, which implements wider warning thresholds around fault thresholds. When the turbine crosses a warning threshold, the controller sends its predicted action to the grid controller, which facilitates the grid operator’s response to a potential wind turbine fault and then takes appropriate action to ameliorate the fault. Various test cases demonstrate the controller action under a variety of faults, and various scenarios demonstrate the grid benefit of an FIRC in both microgrid- and grid-connected contexts. The FIRC maximizes wind turbine generation and eases generation transition under a variety of fault scenarios. The FIRC module is easy to integrate with most existing controllers, just requiring derate capability, and can be easily modified to include the various warnings and thresholds that the user desires. This analysis is mainly performed in a MATLAB-Simulink-based research wind turbine model and is also implemented in the existing LabVIEW-based controller of the same research turbine at NREL.
Abordaje integral del paciente con DM2 en enfermería y medicina
Authors:   Fundación redGDPS, Gómez Ramón Olga , Sanz Vela Noelia , Álvarez Hermida Ángeles , García Soidán Javier
Published: August 2022

Tienes entre tus manos un auténtico tesoro. Es el producto de mucho trabajo y conocimiento de las autoras y autores, compañeras y compañeros con los que trabajamos todos los días en nuestros centros, y del compromiso de la Fundación redGDPS con la difusión del conocimiento sobre la diabetes entre todos los profesionales de Atención Primaria. Insistir, a día de hoy, en la importancia del trabajo de enfermería en el cuidado del paciente crónico y, muy especialmente, en el paciente con diabetes debería ser algo superfluo, pero esta reivindicación de su papel es trascendental y sigue teniendo mucho sentido. En efecto, nuestro sistema sanitario público se enfrenta, aún en medio de la pandemia por la COVID-19, con el tremendo reto de la atención a la cronicidad imposible de abordar sin estos profesionales, sin vosotros. La diabetes dista de ser una enfermedad de sencillo manejo, es poliédrica, casi podríamos decir que hay casi tantas diabetes como pacientes la padecen. Por ello estamos obligados a actualizarnos continuamente y a replantearnos nuestros objetivos para cada persona en cada visita, nunca podemos dar el caso por cerrado. Perdamos la esperanza de una consulta rutinaria, ninguna lo es, ningún paciente merece el desdén de una consulta de rutina. Esperamos que los contenidos en este documento contribuyan no solo a incrementar el conocimiento de la persona que lo consulte sino que, y este es nuestro objetivo último, lo aprendido ayude en la necesaria toma de decisiones y se refleje la mejora de la atención a nuestros pacientes con diabetes. Disfrútalo.
Reseña: Para transformar la sociedad: las izquierdas democratizadoras de inspiración socialista. Rodrigo Arocena. Clacso, Buenos Aires 2020
Authors: Noboa Silva Alejandro
Published: August 2022

Recensión del libro recientemente publicado donde trata la situación actual del mundo y en especial latinoamerica, dejando sugerencias, líneas de orientación y propuestas para las izquierdas de inspiración socialista.
Percepción sobre movilidad humana: diseño y validación de instrumento para su evaluación
Authors: López Reyes Emilio Alberto , Juárez Hernández Luis Gibran
Published: August 2022

Actualmente, el proceso migratorio es un fenómeno que ha alcanzado dimensiones de crisis global.  Por lo anterior se requieren instrumentos que describan perfiles migratorios y percepción del proceso. Ante lo anterior se diseñó y valido el instrumento “Ficha de Movilidad Humana”. Para su diseño se revisaron instrumentos de percepción sobre el proceso migratorio, para su validación se revisó por expertos y se evaluó en un juicio de expertos y se aplicó a un grupo piloto de 100 personas. Resultados: Se realizaron mejoras sugeridas por expertos, validación de contenido de ítems (V de Aiken>0.80) y valoración satisfactoria del grupo piloto. Se presenta un instrumento pertinente y valido para evaluar perfil migratorio, trayecto y percepción.
Percepciones de participación e incidencia por parte de las Asociaciones Civiles en Ciudad Juárez
Authors: Morales Tobón Alba Pamela , Lopez Lopez Erasto , Breceda Pérez Jorge Antonio
Published: August 2022

Este trabajo se enfoca en las organizaciones de la sociedad civil ubicadas en Ciudad Juárez, México. El instrumento idóneo para la recolección de datos fue la creación de una batería de preguntas para realizar entrevistas en profundidad, aplicadas a directores y dirigentes de las dichas organizaciones. Se analizó la percepción e incidencia que los participantes manifestaron, visualizando los resultados con el apoyo del programa MAXQDA a través de nubes de información y tablas desglosando el contenido, obteniendo una imagen clara de las percepciones e incidencia y participación que las organizaciones de la sociedad civil han logrado.
Conflicto y cambio constitucional en América Latina. Su comparación mediante fuzzy sets QCA
Authors: Pereda Gutiérrez Paulina
Published: August 2022

Conflicto y cambio constitucional en América Latina. Su comparación mediante fuzzy sets QCA, escrito por Gisselle de la Cruz Hermida, indaga en las causas que, en entornos de conflicto, derivan en un cambio de régimen. 

En esta obra, De la Cruz Hermida realiza una valiosa aportación al estudio de las ciencias sociales en Latinoamérica pues utiliza, de manera novedosa, como herramienta y como estrategia, el análisis comparativo cualitativo o QCA. 

Este es un texto de  valor para quienes se interesen en la observación y estudio de cambios constitucionales en la región de Latinoamérica, a partir de las cinco unidades de observación que la autora selecciona: Argentina, Bolivia, Ecuador, México y Venezuela.
Dos crimes de mando à violência difusa
Authors: De Brito André Lucas Maia , Barreira César
Published: August 2022

Neste artigo procuramos discutir aspectos do crescente fenômeno de interiorização da violência no estado do Ceará, ou seja, o aumento do número de homicídios em municípios que ficam fora da região metropolitana de Fortaleza. Para o recorte de pesquisa, escolhemos a cidade de Limoeiro do Norte, localizada no Vale do Jaguaribe, região com histórico de crimes de pistolagem e assassinatos políticos em seu passado distante e recente. Procuramos, através de métodos quantitativos e qualitativos, compreender a percepção pública sobre medo, violência e mudança de hábitos, traçando paralelos entre as novas conformações da violência com aquelas do passado. Junto a isso, discutimos as intersecções entre o urbano e o rural em uma cidade de médio e pequeno porte do sertão cearense, sob a ótica dos julgamentos sociais a respeito da violência. O artigo é um esforço inicial de pesquisa e tem caráter explo ratório, onde procuramos avançar em um entendimento sobre a proximidade social como um importante amplificador da sensação de insegurança, seja no ambiente rural ou urbano, mas com distintas repercussões e especificidades.

Palavras-chave: Violência; Interiorização da violência; Medo; Vizinhança; Mobilidade; Urbano; Rural.
Hetero é sempre normativo?
Authors: Souza Nascimento Silvana
Published: August 2022

Este artigo pretende fazer uma reflexão antropológica sobre a relação entre gênero, cisheteronormatividade, socialidade e mobilidade a partir de pesquisas etnográficas no interior de Goiás em contextos de festividades católicas cujo movimento entre campos e cidades faz parte constitutiva de suas dinâmicas. A ideia é trazer atualizações de experiências de pesquisas realizadas para o doutorado em Antropologia, defendido em 2006 e, ao mesmo tempo, considerações recentes a partir de um breve trabalho de campo realizado dez anos depois, na mesma região, buscando compreender transformações e permanências nos modos de fazer festa e produzir diferença por meio de uma permanente mobilidade entre campo e cidade, o extraordinário e o cotidiano. Nessa mobilidade, como se configuram as relações cisheteronormativas? Como compreender relações homossociais que, ao mesmo tempo, reproduzem as normatividades ditas hegemônicas?