bluuebunny/crossref_metadata_2025 huggingface dataset:
A Conceptual Overview of Risk Management in Education Sector Projects
Authors: Narasimhan Ms. Padmajah
Published: October 2020

Risk management is one of the important areas for implementation of any project and more precisely in the education sector. The conceptual research on risk management in projects within education sector is one of the key focus areas, which helps in identifying the circumstances leading to actualization. The outcomes that can arise while establishing a risk management framework in education projects can reduce the chances of effective reduction of risks. This requires a leading approach like categorization of risks to implement the same. Furthermore, in the perspective of modern educational risk management, rationality leading to risks formulates the effective risk handling process in a methodical and organizational condition. The outcome of risk management can favour the creation of effective and efficient risk management models along with strategies in the sphere of education. The present research study focuses on helping the educational employees into designing, planning, implementing, monitoring and evaluating the educational projects at various levels of the organization in order to manage the risks associated with it.
Degree of Nurses’ Compliance to the Guidelines of Occupational Exposure to Pathogenic
Micro-organisms; A Review of Literature
Authors: Gamvrouli Maria , Kapritsou Maria
Published: October 2020

Biological infectious hazards are the main factors which nursing staff deal with. It
is fundamental rule, nurses to apply the guidelines of occupational exposure to
pathogenic micro-organisms. The aim of this review was to examine the current
literature on the degree of nurses’ compliance to the guidelines of occupational
according to exposure to pathogenic micro-organisms. A review of literature was
conducted on the Medline / PubMed, Cochrane, Scopus, and Google Scholar
databases from 2000 to 2018. The keywords used in the bibliography search were,
health care professionals, nurses’ attitudes, occupational exposure, and safety
guidelines. The inclusion criteria were: a) studies that were directly related to the
topic, and b) studies in English and Greek language, published in peer-reviewed
journals. The search strategy revealed 1287 studies, 1260 excluded. Finally 27
studies were included. Nurses' compliance to the guidelines of occupational
exposure to pathogenic microorganisms is described as unsatisfactory, and an
emergency situation has been shown to be the major obstacle to follow the
guidelines. It is necessary to understand the factors which contribute to nurse’s noncompliance. The results show that there is a need to propose measures that will
positively affect the nurses’ performance.

Keywords: Health care professionals; Nurses’ attitudes; Occupational exposure;
Safety guidelines.
CIRCULAR ECONOMY ADOPTION WITHIN 3D PRINTING INDUSTRY: THE STATE OF THE ART, MAJOR ISSUES AND CHALLENGES
Authors: Rayside Angelina , Chowdary Boppana , Dey Prasanta
Published: October 2020

There is a growing realisation in the international community that economic development and environmental conservation must achieve a balance to enable future generations to survive and prosper as we exist on a planet of finite resources. Circular Economy (CE) has emerged as a paradigm shift to assist in attaining this balance. It has been argued that industry can achieve CE through five phases – take, make, distribute, use and recover i.e. converting their linear business processes (take, make and distribute) to circular. 3D printing/Additive Manufacturing (AM) industry is developing speedily and it could potentially involve trillions of dollars in business over the coming decades. 3D printing inadvertently achieves some of the most urgent environmental and resource goals facing the global industry. For example, the transportation and manufacturing carbon footprint of many products could be reduced as design, rather than products, is shipped. Further, 3D Printers will manufacture personalized products locally and only on demand. Moreover, with developments in bio-based ‘smart’ materials, the 3D printing process itself can lead to significant material savings. The promise of 3D printing with bio-materials is that it can create a fully sustainable and circular manufacturing process. The literature indicates that the 3D printing industry can contribute various parts of the circular economy system: especially in maintenance, re-use, re-manufacturing and re-cycling of products and goods. Though there is evidence in other manufacturing processes, literature on 3D printing industry adoption of CE is scanty. As the 3D printing industry has the promise to become the clear winner in realising a sustainable CE, the main objective of this paper is to identify the major issues and challenges of each phase of CE. The outcome of the study gives the way forward to the most urgent environmental and resource constraints facing the product suppliers scattered around the globe.
EXPLORING AN OPTIMIZATION STRATEGY AT THE MAINTENANCE DEPARTMENT OF AN OIL COMPANY
Authors: Harrison Stefan , Bansee Jainarine , Chowdary Boppana , Seepersad Rajeev , Frederick Dillon
Published: October 2020

This paper looks at applying predictive maintenance and automated data storage and retrieval to reduce waste within a Petroleum Company. In this company, all pump maintenance was performed internally. The study explores the potential effect of the proposed strategy on the operations of three departments relevant to pump maintenance. These departments were, the Pump Shop, Stores Department and Shipping and Receiving. Rockwell Automation’s Arena® simulation software was used to model an existing and proposed maintenance system comprised of these three departments and track the performance measures of Flow Time, Waiting Time and Work-in-Process. Analysis of the performance measures revealed a significant reduction in average Flow Time and Waiting Time by 76% and 96% respectively with no significant change to Work-in-Process.
CLINICAL PROFILE OF PAEDIATRIC PHARYNGO-OESOPHAGEAL FOREIGN BODIES IN A TERTIARY HEALTH INSTITUTION, NORTH WEST NIGERIA.
Authors: D Aliyu , KR Iseh , M Abdullahi , SB Amutta
Published: October 2020

Background: Pharyngo-oesophageal foreign bodies (PFB) in children are frequent clinical entity requiring an urgent radiological and endoscopic surgical intervention to avert life threatened complications seen in otorhinolaryngology practice. Objective: The objective of this study is to describe the pattern of pharyngooesophageal foreign bodies’ impaction, management challenges and the need for health education to care givers. Method: A retrospective review of all cases of paediatric patients with suspected or confirmed history of PFB from January 2007 to December 2011. The information retrieved included the biodata, types of foreign body, clinical and radiological findings, treatment and outcome.Results were analysed by simple statistical table. Results: Sixty seven patients diagnosed with Pharyngo-oesophageal Foreign Body, forty three (64%) were males while 24(36%) were females with M: F ratio = 1.8:1 and Mean age of 4.9 years (age range 6months to 13years.).Coins 36(54%) were the commonest PFB. Only 13(19%) presented to hospital within 24hours of ingestion. Common presenting symptom were Vomiting 70%, and dysphagia in 73%. Fifty four (81%) had positive history of FB ingestion and 13(19%) of the patient PFB were detected radiologically. Sixty three (94%) had rigid oesophagoscopy and removal under general anaesthesia while 4(6%) fish bone FB in the tonsils were extracted in the out-patient clinic after xylocaine spray. Post operative complications were noticed in 13(19%). Conclusion: Coin is the commonest pharyngoesophageal foreign body in children. Only 19% of these patient presented to hospital within 24hours therefore public health education to parents and care givers is recommended.
PREVALENCE AND CHARACTERISTICS OF OVARIAN CANCER IN UDUTH: A 10 YEAR REVIEW
Authors: AT Burodo , BA Isah , AA Panti , Aisha Abdullahi
Published: October 2020

Objectives; To determine the prevalence and characteristics of ovarian cancers in women as seen in gynaecological Unit at UDUTH Sokoto. Methods: A 10 year retrospective study of all cases of ovarian cancers seen at the gynaecological clinic of UDUTH Sokoto, between 1stJanuary 2002, to 31st December 2011. Results: The result of the study showed that out of the 16,140 cases seen at the gynaecological clinic at UDUTH, 39 cases were Ovarian cancer and this gives a prevalence of 0.24%. Fifteen of the patients (38.5%) fall within the age range of 60 years and above. About one third of the women 14 (35.9%) studied had a parity of between 0-1. Abdominal swelling, pain and GIT symptoms were the commonest presenting symptoms 32(82.1%). Majority of the patients 33 (84.6%) presented with advanced stage of the disease. Serous cystade no carcinoma constituted the largest number of the patients 17 (43.6%). The majority of the patients 28 (71.8%) had epithelial cells ovarian cancer. The outcome of the study showed that 11 (28.2%) of the patients were alive, 16 (41%) of the patients died, 8 (20.5%) of the patients signed against medical advice (SAMA), while 4 (10.3%) of the patients were lost to follow up. Conclusion: The commonest ovarian cancer in this study was serous cyst adenocarcinoma. Majority of the patients present with late stage of the disease. Emphasis should be on high level of vigilance and early detection with improved diagnostic techniques.
KLEPTOMANIA: A CASE REPORT IN A NIGERIAN WOMAN
Authors: OT Oladele , AH Abdurahman , I , Abdullahi , NO Madandola
Published: October 2020

The clinical manifestation of kleptomania also called pathological stealing consists essentially of repeated acts of stealing without any apparent motive of gain to the individual. It results from an intense urge to steal with mounting tension and relief of anxiety afterwards. It falls under the category of habit and impulse disorder of the International Statistical Classification of Diseases, 10th Revision (ICD 10) and can exist primarily without coexisting axis 1 diagnosis or impairment of personality which may result in delayed presentation to health facility and poor social support during management. We report clinically diagnosed kleptomania in a 34year old Nigerian female to raise awareness among primary care physicians and mental health providers, especially in the setting of a developing economy.
REASONS FOR SEEKING DENTAL TREATMENT FOLLOWING TRAUMA TO ANTERIOR TEETH AMONG ADULTS IN A LOW- INCOME ECONOMY
Authors: JE Enabulele , LO Ibhawoh
Published: October 2020

Background: Anterior teeth which primarily are the incisors and canine teeth contribute significantly to a satisfactory smile and human appearance. However, they are more likely to be traumatized when trauma is experienced in the facial region. Patient may seek dental attention or treatment immediately or much later due to a variety of reasons including pain, sensitivity, tooth mobility and aesthetic considerations due to tooth substance loss and/or discoloration. Objective: To review the reasons for seeking dental treatment following trauma to anterior teeth from subjects' perspective and the time of presentation and the distribution patterns of the above. Materials and Methods: This was a retrospective study of all adult patients who presented with trauma to the anterior teeth between June 2010 and December 2012 at the University of Benin Teaching Hospital, Benin City, Edo State. Simple descriptive analysis was used to characterize the subjects' demographic characteristics, history of the trauma, time elapsed between trauma and presentation and reasons for seeking treatment. Results and conclusion: There were 221 cases of trauma to the anterior teeth giving an average of 7.34 cases presenting per month. Subjects' ages ranged from 17- 69 years with a mean of 29.7 ± 11.0 years. About half of the subjects (48.4%) sought treatment for aesthetic concerns (discoloration and disfigured teeth). Pain was the main concern in about one third (35.3%) of the subjects. Over one third of the subjects presented within the first month of injury, while almost half of the subjects (49.7%) presented within the first year. The mean time elapsed between injury and presentation among the subjects was 6.84±8.5years. There was statistically significant association between time elapsed and the reasons for seeking treatment. Aesthetic consideration was found to be the most common reason for seeking treatment, health education efforts should be include
Konya Şehri Örneğinde Nasrettin Hoca ve Noel Baba Tanınırlığı Üzerine Karşılaştırmalı Bir Araştırma
Authors: KÜÇÜKTIĞLI Mücahit Sami
Published: October 2020

Kültürel isim ve değerlerin toplumda ne kadar tanındığı ve bu tanınırlığın toplumu oluşturan nesiller bağlamında sayısal olarak değişimi araştırmaya değer bir konudur. Globalleşmenin ve batılılaşmanın yoğun hissedildiği günümüz dünyasında batı kültürüne karşı duruşu ile ön plana çıkmış bir şehir olan Konya’da Türk kültürel mirasının en kıymetli isimlerinden Nasrettin Hoca’nın tanınırlığı günümüz neslinin kimlik kişilik bağlamında Konya şehir kültürünü göstermesi bakımından son derece önemlidir. Diğer yandan Nasrettin Hoca gibi Batı dünyası için değerli olan Noel Baba isminin muhafazakâr Anadolu şehri Konya’da tanınırlığı ayrıca merak uyandıran bir durumdur. Bu anlamda makalede Batının kültürel mirası için önemli bir diğer kültürel öge Noel Baba’nın tanınırlığı Nasrettin Hoca tanınırlığı ile mukayeseli olacak şekilde sorgulanmaktadır. Kültürel mirasın nesiller arasında aktarılmasında resmi veya özel kurumların yanında medyanın da rolü bulunmaktadır. Çocuklar, gençler ve yetişkinlerden oluşan toplumun kendi değerleri ve isimleri ne kadar tanıdığını Konya şehri ölçeğinde ortaya koyan bu çalışmada halkın kendi değerlerine sahip çıkma düzeyi ölçülmüştür. Türk kültürü ve gelenekleri açısından en önemli figürlerin başında Nasrettin Hoca, Batı dünyası açısından ise özellikle yılbaşı kutlamalarıyla Noel Baba’nın önemli bir figür olduğu görülmektedir. Nasrettin Hoca’nın bilinirliğinin Noel Baba’nın tanınırlığı ile ilişkilendirilerek ölçülmeye çalışıldığı makalede kantitatif olarak çoğunluğu çocuk ve gençlerden oluşan toplam 202 kişi ile bire bir görüşme metodu ile anket uygulanarak sonuçlar SPSS programı ile analiz edilmiştir. Araştırma sonucunda Konya’da çocuk ve gençlerin Noel Baba’yı Nasrettin Hoca’dan daha çok tanıdıkları ve azımsanmayacak oranda çocuk ve gencin kendilerini Noel Baba’ya daha yakın hissettikleri sonucu ortaya çıkmıştır. Araştırma ile medyayla birlikte kamu kurum ve kuruluşlarına Türk kültürünü dış etkenlerden ve özellikle Batı kültüründen koruma kapsamında önemli görevler düştüğü ortaya çıkmaktadır.
Traços de uma história: um primeiro olhar da influência de Johann Müller Regiomontanus nas obras do matemático português Pedro Nunes
Authors: Pereira Ana Carolina Costa , Morey Bernadete Barbosa
Published: October 2020

Os séculos XV e XVI foram marcados pelo movimento do Renascimento, um período em que houve um reavivamento do interesse pela arte e pela ciência antiga. A Matemática floresceu principalmente nas cidades mercantis em desenvolvimento, sob a influência do comércio, da navegação, da astronomia e da agrimensura. Nessa época, Johann Müller Regiomontanus(1436-1476) teve um importante papel para a independência da Trigonometria em relação à Astronomia e Pedro Nunes (1502-1578) foi o principal responsável pela renovação dos estudos de astronomia teórica na Europa Latina nesse século. O presente estudo se propõe a buscar traços da influência de Regiomontanus nas obras do matemático português Pedro Nunes. Cientista multifacetado e filósofo, Pedro Nunes não deixou em suas obras apenas assuntos ligados à Astronomia aplicada e à Náutica. A Matemática estava presente, principalmente ligada ao estudo da Geometria e da Álgebra. Nesse estudo, percebemos uma forte ligação do cosmógrafo com Regiomontanus nas obras: Tratado da Sphera,De crepusculis, Erratis Orontii Finaei Regii Mathematicarvm Lvtetiae Professoris, De arte adque ratione navigandie o Libro de Algebra en Arithmetica y Geometria.Dessemodo, investigações envolvendo a relação do desenvolvimento matemático do século XVI em detrimento da produção científica e a influência ocasionada por suas obras, podem transparecer o momento da produção de conhecimento de uma determinada época.
Uma Resenha da Obra de Luis Adauto Medeiros
Authors: Da Silva Clovis Pereira
Published: October 2020

Neste artigo homenageamos o insigne matemático brasileiro, prof. dr. Luis Adauto Medeiros, nosso contemporâneo. No texto abordamos, na forma de uma resenha panorâmica, além de algumas das pesquisas científicas do homenageado, sua decisiva contribuição e dedicação para a estruturação, manutenção e desenvolvimento do Instituto de Matemática da Universidade Federal do Rio de Janeiro -UFRJ, uma das melhores instituições de ensino superior em Matemática do Brasil. Como objetivo subjacente, desejamos contribuir, de modo modesto, para a recuperação de uma parte da memória do saber nacional, isto é, a História da Matemática no Brasil.
Adriaan van Roomen e sua Correspondência: desafios e controvérsias matemáticas no século XVI
Authors: Oliveira Zaqueu Vieira , Haddad Thomás A. S.
Published: October 2020

A correspondência foi um dos meios de comunicação mais utilizados por cientístas e estudiosos durante o renascimento. Além de encontrarmos evidências dos interesses científicos e matemáticos de cada autor, são nessas cartas que encontramos também evidências das práticas consideradas válidas dentro do ambiente científico e matemático daquele tempo. Em um trabalho recente, Catherine Goldstein (2013) considera a rede de correspondentes de Marin Mersenne (1588-1648) como uma instituição, termo utilizado para mostrar as relações entre os interlocutores, as práticas consideradas válidas e as polêmicas e as discórdias sobre os modos de se resolver problemas matemáticos, fatos evidenciados nas cartas. Neste artigo, apresentamos a tradução de quatro cartas de Adriaan van Roomen (1561-1615) e um ensaio sobre duas controvérsias em que o autor figura como um dos protagonistas: o debate entre van Roomen e François Viète (1540-1603) e os desafios trocados por eles em suas obras publicadas no final do século XVI e a batalha de Joseph Justus Scaliger (1540-1609) tentando se defender de um grupo de matemáticos, que inclui van Roomen, que refutaram os erros na sua solução para o clássico problema da quadratura do círculo. Apontaremos como estas e outras questões que aparecem na Correspondência de van Roomen nos demonstrando como se dava a prática matemática no século XVI e como podemos considerá-la como uma instituição, no sentido exposto por Goldstein.
The Evolution of Mathematics in Ancient China: From the newly discovered 數 Shu and 算數書 Suan Shu Shu Bamboo Texts to the Nine Chapters on the Art of Mathematics
Authors: Dauben Joseph W.
Published: October 2020

The history of ancient Chinese mathematics and its applications has been greatly stimulated in the past few decades by remarkable archaeological discoveries of texts from the pre-Qin and later periods that make it possible to study in detail mathematical material from the time at which it was written. By examining the recent Warring States, Qin and Han bamboo mathematical texts currently being conserved and studied at Tsinghua University and Peking University in Beijing, the Yuelu Academy in Changsha, and the Hubei Museum in Wuhan, it is possible to shed new light on the history of early mathematical thought and its applications in ancient China. Also discussed here are developments of new techniques and justifications given for the problems that were a significant part of the growing mathematical corpus, and which eventually culminated in the comprehensive Nine Chapters on the Art of Mathematics. What follows is a revised text of an invited plenary lecture given during the 10th National Seminar on the History of Mathematics at UNICAMP in Campinas, SP, Brazil, on March 27, 2013.
The Work of the Mathematician Leopoldo Nachbin (1922-1993) from FNFi
Authors: Silva Clovis Pereira da
Published: October 2020

In this paper we discuss the professional activity of Leopoldo Nachbin (1922-1993) in the period in which he worked at National Faculty of Philosophy of the University of Brazil (FNFi/UB, in Portuguese) until his retirement by Institute of Mathematics of the Federal University of Rio de Janeiro (IM/UFRJ, in Portuguese). We identify the influence played by some mathematicians such as G. Mammana (1893-1980), L. Schwartz (1915-2002), A. Monteiro (1907-1980), A. Weil (1906-1998), J. Dieudonné (1906-1992), M. Stone (1903-1989), and A. A. Albert (1905-1972) in the professional training of L. Nachbin. We also address the serious difficulties he encountered in the Mathematics Department of FNFi when he was entered in the competition, opened in 1950, for the post of full Professor (Professor Catedrático) of Mathematics and Superior Analysis of FNFi. We emphasize in the paper, that the period from 1947 to the 1960s marks the most creative and productive phase in terms of scientific research in the academic life of L. Nachbin.
ALGORITHM FOR PICKING, ORIENTING AND PLACING AN OBJECT WITH A 6-AXIS ROBOT AND A 2D VISUAL INSPECTION CAMERA
Authors: Kostov Boris , Hristov Vladimir
Published: October 2020

With the development of visual inspection and artificial intelligence tech-nologies, robots are increasingly required to replace humans in more complex operations that require the robot to "see" and "think." For this reason, the present develop-ment proposes, synthesizes, and puts into operation an algorithm for taking a part with a specific marker from a 6-axis robot, presenting it to a 2D camera for visual inspection and its correct orientation based on information received from the camera and its placement. on another part with a pre-marked direction of the marker. An improvement of the orientation algorithm with an algorithm for compensation of the gripping error is proposed.
Torsión de pedículo de quiste anexial durante el embarazo: experiencia clínica de manejo conservador - Parte 2 de 2
Authors: Maita Freddy , Niño de Guzmán O. , Antezana Eufronio , Céspedes Gaby , Hochstatter Edwin
Published: October 2020

Las masas anexiales en el embarazo oscilan entre el 2% a 10%; su torsión es causa rara de abdomen agudo durante el mismo. La conducta frente al diagnóstico fue, tradicionalmente, anexectomía sin detorsión del lado comprometido; posteriormente, detorsión y conservación del anexo torcido. Objetivo: describir el valor de la punción y aspiración bajo guía ecográfica como tratamiento, inicialmente temporal, en cuadro de torsión de pedículo de quiste anexial durante el embarazo. Métodos: estudio observacional prospectivo de 9 casos clínicos con diagnóstico de torsión de pedículo de quiste anexial y embarazo sometidos al tratamiento de punción aspiración del quiste torcido bajo guía ecográfica entre el año 2014 a 2019. Resultados: en todos los casos fue posible salvar en anexo comprometido; en dos casos hubo persistencia del quiste que se extirpó durante la cesárea; en el resto, la resolución fue completa. Hubo una pérdida de embarazo atribuible al cuadro clínico. Conclusión: la punción-evacuación del quiste simple torcido parece ser una buena alternativa en la resolución del cuadro agudo.
Muestreo aleatorio de base espacial y su utilidad en la investigación epidemiológica
Authors: Zambrana Vera Angela Marion , Avilés Ribera Sergio Alberto , Gumucio Zabalaga Fernando , Luizaga López Marcela , Pineda Gamarra Paul , Illanes Velarde Daniel
Published: October 2020

La correcta aplicación de las técnicas del proceso de muestreo se ha hecho indispensable para la investigación en el campo de la epidemiologia, el desafío de todo investigador, es que los resultados de unos cuantos, puedan ser extrapolables para una población. El presente artículo, es una revisión no sistemática, que proporciona información sobre la aplicación de un método de muestreo aleatorio asociado con una ubicación geográfica, para el estudio de “Valores de Referencia de la Fuerza de Agarre en adultos del departamento de Cochabamba-Bolivia”. Primeramente, en la introducción se revisa la importancia de estimación de parámetros poblaciones de referencia, a partir de preguntas descriptivas. Seguidamente se menciona las características de la investigación epidemiológica asociada a la espacialidad; en tercer lugar, se detalla la metodología y las experiencias que conllevo la aplicación del muestreo en el proyecto. Finalmente se hace un hincapié en la necesidad y relevancia del uso de esta metodología.
Uso de plasma convaleciente en pacientes con COVID-19
Authors: Nina Garcia Nelson M. , Cussi Coronel Guiselle Alejandra
Published: October 2020

La enfermedad por coronavirus 2019 (COVID-19) representa una de las mayores pandemias a las que el mundo se enfrenta y está produciendo una crisis sanitaria global. Hasta la fecha no se disponen de terapias o vacunas aprobadas para esta enfermedad. Se están estudiando varias opciones terapéuticas y desarrollando vacunas. El plasma convaleciente constituye una opción terapéutica interesante contra COVID-19, ya que sutilizó con éxito en otros brotes virales en el pasado. Esta terapia se consiste en la recolección de plasma de individuos recuperados de la enfermedad viral que desarrollaron anticuerpos. Es considerada la única estrategia a corto plazo, para conferir inmunidad inmediata a individuos susceptibles. En esta revisión se aborda los posibles mecanismos de acción del plasma convaleciente, damos una vista panorámica de los primeros estudios realizados en COVID-19, así como como los procedimientos necesarios para implementar esta terapia.
Mixoma auricular derecho en la infancia
Authors: Jimenez Aguilar Mijail , León Varón Cinthia Fabiola , Martínez León Alejandro F. , Zurita Víctor
Published: October 2020

Los tumores cardíacos primarios son poco frecuentes y representan solo el 5% de todos los tumores cardíacos. El 75% de estos tumores son benignos, y el mixoma es el tumor benigno más común en el adulto (50%). La mayoría de los mixomas cardíacos se localizan en la aurícula izquierda, solo el 18-20% se localizan en la aurícula derecha, y es aún más infrecuente la aparición de un tumor bilobulado, los signos y síntomas con los que se presentan son inespecíficos y varían de acuerdo a su comportamiento. Presentamos un caso con estas características en una paciente escolar de 9 años de edad que ingresó al Hospital del Niño Manuel Ascencio Villarroel
A Síndrome de Burnout entre estudantes universitários: uma investigação multivariada no Bacharelado em Administração de uma instituição federal de ensino superior na região norte do Brasil
Authors: Mattos Carlos André Corrêa de , Abud Glenda Maria Braga , Barbosa Kathúcia da Silva , Moreira Maria Luíza Rodrigues , Mancebo Carlos Henrique Andrade
Published: October 2020

A síndrome de burnout é um mal organizacional, caracterizado pela desistência e que se manifesta na forma de exaustão emocional, sensação de falta de competência profissional e pela descrença. Os avanços nas pesquisas, revelaram a síndrome em diversas profissões e, até mesmo, entre estudantes. Considerando isso, o objetivo deste estudo foi analisar a presença da síndrome de burnout entre estudantes do curso de Bacharelado em Administração de uma Instituição Federal de Ensino Superior na Região Norte do Brasil. Para tanto, foi utilizado o Maslach Burnout Inventory – Student Survey (MBI-SS). A pesquisa feita na forma de survey com amostragem probabilística aleatória simples obteve 202 questionários de pesquisa válidos. O tratamento de dados utilizou técnicas descritivas, inferenciais, multivariadas e correlacionais. Os resultados confirmaram a estrutura trifatorial do modelo e explicaram 62,22% da variância dos dados. As técnicas descritivas mostraram a presença de exaustão emocional e a análise de agrupamentos, classificou os estudantes em três grupos significativamente diferentes entre si e que variaram quanto a intensidade da síndrome, sendo, 15,84% dos entrevistados com intensidade elevada de burnout. Os resultados recomendam estratégias para reduzir o estresse crônico e assim enfrentar o agravamento da síndrome na população estudada
A importação descontextualizada de conceitos e o ensino de Administração no Brasil: outro capítulo na “simplicização” dos nossos livros didáticos
Authors: Moura Guilherme Lima , Conceição Neto Vera Lúcia da , Ferreira Daiana Amorim
Published: October 2020

O objetivo deste artigo é analisar as Teorias Organizacionais (TO) como uma construção discursiva, histórica e política de ressignificações de saberes, caracterizada pela importação de conceitos de outras áreas de conhecimento recorrendo a analogias e metáforas. Para a análise dos manuais de ensino da Administração, de cursos de graduação de Administração no Brasil, usamos o conceito wittgensteiniano de jogos de linguagem e a concepção austiniana de performatividade. Os resultados demonstram que as TO são frequentemente constituídas em apropriações conceituais externas, num processo epistemologicamente frágil e ideologicamente enviesado. A apresentação de um padrão conceitual que trata os principais conceitos da área – “organização” e “administração” – como meras agrupamentos de interesse coletivo. Do ponto de vista pragmático, o significado sempre se consagra no uso, não existindo proprietários etimológicos de conceitos, palavras ou expressões. Contudo, é preciso refletir de maneira contínua e autocrítica sobre como desenvolvemos definições, uma vez que nada se ganha com leituras simplistas de fenômenos complexos, pois está extrema “simplicização” dos fenômenos organizacionais fragiliza o sentido do ensino de Administração e a qualidade analítica dos futuros profissionais. Para futuras pesquisas, sugere-se a inclusão de novos títulos ao corpus para confirmação do padrão.
Evasão na EAD: perspectivas de prevenção
Authors: Habowski Adilson Cristiano , Branco Lílian Soares Alves , Conte Elaine
Published: October 2020

A cultura digital vem exigindo formas diferenciadas de conhecimento e reflexão nos cursos superiores, uma vez que a transição digital é atravessada por relações de poder-saber que intervém sobre a linguagem e a percepção humana, o que tem exigido reestruturações curriculares e o acesso barateado a cursos de EaD. Nessa perspectiva, o direito de todos à educação não pode sucumbir à facilitação de cursos oferecidos, sob pena de não vencer a barreira da ignorância, do conformismo e ser uma farsa. Em vista disso, procuramos debater e analisar como a educação superior pode contribuir para a discussão criadora acerca das mazelas provocadas pela EaD e ao problema da evasão. No cenário contemporâneo, o olhar hermenêutico propõe compreender o desafio da EaD, problematizando as tendências e conjecturas do fenômeno da evasão, tendo em vista os altos índices de evasão nos cursos de EaDe a corresponsabilidade das instituições. Os resultados apontam que é necessário criar formas de acesso à EaD e também de permanência e reconhecimento do outro nesse campo, por meio da cultura do diálogo e da motivação, que dá embasamento à gestão institucional/comunicacional, por meio da sensibilidade, da afetividade, da empatia (enfrentando a apatia) e de projetos de (form)ações cooperativosem redes de conhecimento.
Programa Solução Educacional: uma formação para a resiliência em tempos de agudas contradições
Authors: Chaves David , Motta Vânia Cardoso da , Gawryszewski Bruno
Published: October 2020

Este artigo analisa o programa Solução Educacional para o Ensino Médio (SEEM), fruto da parceria entre o Instituto Ayrton Senna (IAS) e a Secretaria de Estado de Educação do Rio de Janeiro (SEEDUC/RJ). O objetivo é compreender a essência da proposta educacional, para além do que se manifesta na imediaticidade, que enfatiza a introdução de competências socioemocionais no currículo e se apresenta como uma tecnologia social de caráter técnico e sem mediações ideológicas. Para obter tal propósito, a metodologia de trabalho consistiu no estudo de caso sobre o SEEM, a partir do levantamento de informações dos sites oficiais dos parceiros que elaboraram e executaram o programa (IAS e SEEDUC/RJ), acrescida de revisão bibliográfica que versa sobre teoria de Estado moderno e fundamentos educacionais. Concluímos que o SEEM se constitui num projeto de formação escolar classista no contexto neoliberal, mas que não se materializa de forma automática, pois é atravessado por contradições e precárias condições infraestruturais da rede.
Decennial time trends and diurnal patterns of particle number concentrations in a central European city between 2008 and 2018
Authors: Mikkonen Santtu , Németh Zoltán , Varga Veronika , Weidinger Tamás , Leinonen Ville , Yli-Juuti Taina , Salma Imre
Published: October 2020

Abstract. Multiple atmospheric properties were measured semi-continuously in
the Budapest platform for Aerosol Research and Training laboratory, which
represents the urban background for the time interval of 2008–2018. Data of
6 full measurement years during a decennial time interval were subjected to
statistical time trend analyses by an advanced dynamic linear model and a
generalized linear mixed model. The main interest in the analysed data set
was on particle number concentrations in the diameter ranges from 6 to 1000 nm (N6−1000), from 6 to 100 nm (N6−100, ultrafine particles), from
25 to 100 nm (N25−100) and from 100 to 1000 nm (N100−1000). These
data were supported by concentrations of SO2, CO, NO, NOx,
O3, PM10 mass, as well as air temperature, relative humidity, wind speed,
atmospheric pressure, global solar radiation, condensation sink, gas-phase
H2SO4 proxy, classes of new aerosol particle formation (NPF), and
growth events and meteorological macro-circulation patterns. The trend of
the particle number concentrations derived as a change in the statistical
properties of background state of the data set decreased in all size
fractions over the years. Most particle number concentrations showed
decreasing decennial statistical trends. The estimated annual mean decline
of N6−1000 was (4–5) % during the 10-year measurement interval, which
corresponds to a mean absolute change of −590 cm−3 in a year. This was
interpreted as a consequence of the decreased anthropogenic emissions at
least partly from road traffic alongside household heating and industry.
Similar trends were not observed for the air pollutant gases. Diurnal
statistical patterns of particle number concentrations showed tendentious
variations, which were associated with a typical diurnal activity–time
pattern of inhabitants in cities, particularly of vehicular road traffic.
The trend patterns for NPF event days contained a huge peak from late
morning to late afternoon, which is unambiguously caused by NPF and growth
processes. These peaks were rather similar to each other in the position,
shape and area on workdays and holidays, which implies that the dynamic and
timing properties of NPF events are not substantially influenced by
anthropogenic activities in central Budapest. The diurnal pattern for
N25−100 exhibited the largest relative changes, which were related to
particle emissions from high-temperature sources. The diurnal pattern for
N100−1000 – which represents chemically and physically aged particles
of larger spatial scale – were different from the diurnal patterns for the
other size fractions.
Sea waves impact on turbulent heat fluxes in the Barents Sea according to numerical modeling
Authors: Myslenkov Stanislav , Shestakova Anna , Chechin Dmitry
Published: October 2020

Abstract. This paper investigates the impact of sea waves on turbulent heat fluxes in the Barents Sea. The COARE algorithm, meteorological data from reanalysis and wave data from the WW3 wave model results were used. The turbulent heat fluxes were calculated using the modified Charnock parameterization for the roughness length and several parameterizations, which explicitly account for the sea waves parameters. A catalog of storm wave events and a catalog of extreme cold-air outbreaks over the Barents Sea were created and used to calculate heat fluxes during extreme events. The important role of cold-air outbreaks in the energy exchange of the Barents Sea and the atmosphere is demonstrated. A high correlation was found between the number of cold-air outbreaks days and turbulent fluxes of sensible and latent heat, as well as with the net flux of long-wave radiation averaged over the ice-free surface of the Barents Sea during a cold season. The differences in the long-term mean values of heat fluxes calculated using different parameterizations for the roughness length are small and are on average 1–3 % of the flux magnitude. Parameterizations of Taylor and Yelland and Oost et al. on average lead to an increase of the magnitude of the fluxes, and the parameterization of Drennan et al. leads to a decrease of the magnitude of the fluxes over the entire sea compared to the Charnock parameterization. The magnitude of heat fluxes and their differences during the storm wave events exceed the mean values by a factor of 2. However, the effect of explicit accounting for the wave parameters is, on average, small and multidirectional, depending on the used parameterization for the roughness length. In the climatic aspect, it can be argued that the explicit accounting for sea waves in the calculations of heat fluxes can be neglected. However, during the simultaneously observed storm waves and cold-air outbreaks, the sensitivity of the calculated values of fluxes to the used parameterizations increase along with the turbulent heat transfer increase. In some extreme cases, during storms and cold-air outbreaks, the difference reaches 700 W m−2.
Seasonal patterns of atmospheric mercury in tropical South America as inferred by a TGM continuous record at the Chacaltaya Station (5240 m) in Bolivia
Authors: Koenig Alkuin Maximilian , Magand Olivier , Laj Paolo , Andrade Marcos , Moreno Isabel , Velarde Fernando , Salvatierra Grover , Gutierrez René , Blacutt Luis , Aliaga Diego , Reichler Thomas , Sellegri Karine , Laurent Olivier , Ramonet Michel , Dommergue Aurélien
Published: October 2020

Abstract. High-quality data of atmospheric mercury (Hg) is rare for South America, especially for its tropical part. In consequence, mercury dynamics are still highly uncertain in this region, a significant deficiency, as South America appears to play a major role in the global budget of this toxic pollutant. To address this issue, we performed nearly two years (July 2014–February 2016) of continuous high resolution total gaseous mercury (TGM) measurements at the Chacaltaya (CHC) mountain site in the Bolivian Andes, which is subject to a diverse mix of air masses coming predominantly from the Altiplano and the Amazon rainforest. For the first eleven months of measurements, we obtained a mean TGM concentration of 0.89±0.01 ng m−3, in good agreement with the sparse amount of data available from the continent. For the remaining nine months, we obtained a significantly higher TGM concentration of 1.34±0.01 ng m−3, a difference which we tentatively attribute to the strong El Niño event of 2015–2016. Based on HYSPLIT back-trajectories and clustering techniques, we show that lower mean TGM concentrations were linked to either westerly Altiplanic air masses or those originating from the lowlands to the south-east of CHC. Elevated TGM concentrations were related to northerly air masses of Amazonian or southerly air masses of Altiplanic origin, the former possibly linked to artisanal and small scale gold mining (ASGM), while the latter might be explained by volcanic activity. We observed a marked seasonal pattern, with low TGM concentrations in the dry season (austral winter), rising concentrations during biomass burning (BB) season, and highest concentrations at the beginning of the wet season (austral summer). With the help of simultaneously sampled equivalent black carbon (eBC) and carbon monoxide (CO) data, we use the clearly BB influenced signal during BB season (August to October) to derive a mean TGM/CO emission ratio of (2.3±0.6)·10−7 ppbvTGM ppbvCO−1, which could be used to constrain South American BB emissions. Through the link with in-situ measured CO2 and remotely sensed solar-induced fluorescence (SIF) as proxies for vegetation activity, we detect signs of a vegetation sink effect in Amazonian air masses and derive a best guess TGM/CO2 uptake ratio of 0.058±0.017 (ng m−3)TGM ppmCO2−1. Finally, significantly higher Hg concentrations in western Altiplanic air masses during the wet season as compared to the dry season point towards the modulation of atmospheric Hg by the Eastern Pacific Ocean.
Epoch-by-epoch estimation and analysis of BeiDou Navigation Satellite System (BDS) receiver differential code biases with the additional BDS-3 observations
Authors: Wang Qisheng , Jin Shuanggen , Hu Youjian
Published: October 2020

Abstract. The differential code bias (DCB) of the Global Navigation Satellite System (GNSS) is an important error source in ionospheric
modeling, which was generally estimated as constants every day. However, the
receiver DCB may be changing due to the varying spatial environments and
temperatures. In this paper, a method based on the global ionospheric
map (GIM) of the Center for Orbit Determination in Europe (CODE) is presented
to estimate the BeiDou Navigation Satellite System (BDS) receiver DCB with epoch-by-epoch estimates. The BDS receiver DCBs
are analyzed from 30 d of Multi-GNSS Experiment observations. The
comparison of estimated receiver DCB of BDS with the DCB provided by the German
Aerospace Center (DLR) and the Chinese Academy of Sciences (CAS) shows a good
agreement. The root-mean-square (rms) values of receiver DCB are 0.43 and
0.80 ns with respect to the DLR and CAS estimates, respectively. In terms of the intraday
variability of receiver DCB, most of the receiver DCBs show relative
stability within 1 d with the intraday standard deviation (SD) of less
than 1 ns. However, larger fluctuations with more than 2 ns of intraday
receiver DCB are found. Besides, the intraday stability of receiver DCB
calculated by the third-generation BDS (BDS-3) and the second-generation BDS
(BDS-2) observations is compared. The result shows that the intraday
stability of BDS-3 receiver DCB is better than that of BDS-2 receiver DCB.
Latent Linear Adjustment Autoencoders v1.0: A novel method for
estimating and emulating dynamic precipitation at high resolution
Authors: Heinze-Deml Christina , Sippel Sebastian , Pendergrass Angeline G. , Lehner Flavio , Meinshausen Nicolai
Published: October 2020

Abstract. A key challenge in climate science is to quantify the forced response in impact-relevant variables such as precipitation against the background of internal variability, both in models and observations. Dynamical adjustment techniques aim to remove unforced variability from a target variable by identifying patterns associated with circulation, thus effectively acting as a filter for dynamically-induced variability. The forced contributions are interpreted as the variation that is unexplained by circulation. However, dynamical adjustment of precipitation at local scales remains challenging because of large natural variability and the complex, nonlinear relationship between precipitation and circulation particularly in heterogeneous terrain. Building on variational autoencoders, we introduce a novel statistical model – the Latent Linear Adjustment Autoencoders v1.0 – that enables estimation of the contribution of a coarse-scale atmospheric circulation proxy to daily precipitation at high-resolution and in a spatially coherent manner. To predict circulation-induced precipitation, the Latent Linear Adjustment Autoencoders v1.0 combines a linear component, which models the relationship between circulation and the latent space of an autocoder, with the autoencoder's nonlinear decoder. The combination is achieved by imposing an additional penalty in the cost function that encourages linearity between the circulation field and the autoencoder's latent space, hence leveraging robustness advantages of linear models as well as the flexibility of deep neural networks. We show that our model predicts realistic daily winter precipitation fields at high resolution based on a 50-member ensemble of the Canadian Regional Climate Model at 12-km resolution over Europe, capturing for instance key orographic features and geographical gradients. Using the Latent Linear Adjustment Autoencoders v1.0 to remove the dynamic component of precipitation variability, forced thermodynamic components are expected to remains in the residual, which enables the uncovering of forced precipitation patterns of change from just a few ensemble members. We extend this to quantify the forced pattern of change conditional on specific circulation regimes. In addition, we briefly illustrate one of multiple possible further applications of the method: a weather generator that emulates climate model simulations of regional precipitation at high resolution by bootstrapping circulation patterns. Other potential applications include addressing detection&attribution at sub-continental scales, statistical downscaling and transfer learning between models and observations to exploit the typically much larger sample size in models compared to observations.
InundatEd: A Large-scale Flood Risk Modeling System on a Big-data –
Discrete Global Grid System Framework
Authors: Chaudhuri Chiranjib , Gray Annie , Robertson Colin
Published: October 2020

Abstract. Despite the high historical losses attributed to flood events, Canadian flood mitigation efforts have been hindered by a dearth of current, accessible flood extent/risk models and maps. Such resources often entail large datasets and high computational requirements. This study presents a novel, computationally efficient flood inundation modeling framework (InundatEd) using the height above the nearest drainage-based solution for Manning's equation, implemented in a big-data discrete global grid systems-based architecture with a web-GIS platform. Specifically, this study aimed to develop, present, and validate InundatEd through binary classification comparisons to known flood extents. The framework is divided into multiple swappable modules including GIS pre-processing; regional regression; inundation model; and web-GIS visualization. Extent testing and processing speed results indicate the value of a DGGS-based architecture alongside a simple conceptual inundation model and a dynamic user interface.
Anthropogenic influence on the Rhine water temperatures
Authors: Zavarsky Alex , Duester Lars
Published: October 2020

Abstract. River temperature is an important parameter for water quality and an important variable for physical, chemical and biological processes. River water is also used by production facilities as cooling agent. We introduced a new way of calculating a catchment-wide air temperature using a time-lagged and weighed average. Regressing the new air temperature vs. river water temperature, the meteorological influence and the anthropogenic heat input could be studied separately. The new method was tested at four monitoring stations (Basel, Worms, Koblenz and Cologne) along the river Rhine and lowered the root mean square error of the regression from 2.37 ∘C (simple average) to 1.02 ∘C. The analysis also showed that the long-term trend (1979–2018) of river water temperature was, next to the increasing air temperature, mostly influenced by decreasing nuclear power production. Short-term changes in timescales < 5 years were connected with changes in industrial production. We found significant positive correlations for the relationship.