bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Development of Insole Monitoring System for Runner
Authors: Mat Dris Muhammad Siddiq , Ramli Mohd Hanif Mohd , Khusaini Nurul Syuhadah , Aziz Norheliena , Mohamed Zulkifli
Published: June 2020

Nowadays, running is said to be one of the common activities that be practiced by various people especially athletes. Back then, there were some researchers report that most of the injuries among athletes involves lower hip bodies. It is due to some factors such as body and foot posture during running activity, selection shoe and style of running. Hence, this research is about to design and develop an insole monitoring system using ESP 32 development board and FSR sensor for the purpose of force distribution detection on runner’s foot. The development of smart insole is to countermeasure the risk of injury to the athletes. This system includes (ESP 32) development board which act as a microcontroller that interfaced with a Wi-Fi module and force sensing resistance (FSR) sensor to detect the force distribution of runner’s foot in (kg) unit. The system able to detect the foot force distribution acts by the runner and transmits the output data of the FSR sensor through the application which called Blynk. The experiments had done through two methods which are jogging and running. The force monitoring data was obtained through the Blynk Application via Wi-Fi. The design and development of insole monitoring system has successfully done and implemented on the runner.
Fatigue Life Behaviour of Transverse Fillet Weld and Transverse Fillet on Weld of the HSLA S460G2+M Followed by HFMI/PIT
Authors: Andud Dahia , Saidin Salina , Manurung Yupiter H.P.
Published: June 2020

This study deals with the fatigue life assessment of the transverse fillet weld and transverse fillet weld on weld fatigue specimen of the offshore steel S460G2+M with a thickness of 10 mm. These specimens were joined using gas metal arc welding (GMAW) with ER80S-N1 filler metal of 1.0 mm in diameter and mixed gases of 80% Ar + 20% CO2 as the consumables. Upon the welding completion, some of the fatigue specimens are treated using high-frequency mechanical impact device called pneumatic impact treatment (HFMI/PIT). The treatment procedure uses 90Hz of frequency, 6 bars of pneumatic pressure and 2 mm pin radius with aims to enhance the lifespan of the specimen. These fatigue specimens are classified in as-welded and HFMI/PIT. The fatigue test was conducted to all fatigue specimens until failure using a 250KN Instron fatigue machine with a constant amplitude loading, a stress ratio of 0.1 and stress loading from 55% to 75% of the yield strength of the base material. The fatigue data were evaluated based on the International Institute of Welding (IIW) evaluation procedures. Further, the fatigue life comparison between the as-welded and HFMI/PIT of both fatigue specimens also with the FAT class recommendation of the IIW for transverse fillet weld is plotted in the S-N curve diagram. Based on the assessment, it is found that the HFMI/PIT fatigue specimens attained higher fatigue life than the as-welded of both fatigue specimens. The most significant of fatigue life improvement after the HFMI/PIT is the HFMI/PIT transverse fillet weld. These treated welds obtained 256 MPa of FAT class which is 79 % higher than FAT class recommended by the IIW for the transverse fillet weld. Besides, the multi-pass welds on the groove weld of the transverse fillet weld on welds are found to contribute to a lower fatigue life of this specimen due to the existing weld defects on the fractured surface of the groove weld.
Green Manufacturing - Textured Novel Cutting Tool for Sustainable Machining: A Review
Authors: Farooqi Awais , bin Yusoff Nukman
Published: June 2020

Green manufacturing concept has become a cutting edge in the field of sustainable machining. The prime objective of the philosophy is to find a technique in machining or material removal processes that are environmentally friendly, with minimal wastage, energy efficient and optimal condition for the machining processes. This review paper discusses the significance of textured novel cutting tools, is one of the promising technologies and process. It discusses the Dry Machining process to capture green sustainable manufacturing practices. The study may answer of how it stands among other methods including minimum quantity lubrication and nano fluid lubricant. This paper also presents the importance of advanced manufacturing tools to match the sustainable future needs with an idea of proposed methodology to conduct a research on textured novel cutting tools for sustainable machining.
An Investigation on the Surface Integrity of Grade 5 Titanium Alloy Proceeding the Wire Electro-Discharge Machining (WEDM) Process
Authors: Musa Nornisaadila , Saedon Juri B. , Adenan M.S.
Published: June 2020

This paper presents the experimental work of the surface roughness, surface topography, elementary analysis and microhardness of wire electro-discharge (WEDM) machining of grade 5 titanium alloy (Ti-6Al-4V). Ti-6Al-4V has wide range of application in alloys due to its superior mechanical properties such as corrosion resistance, high tensile strength and toughness. Based on its great hardness value, conventional machining leads to high rates of tool wear, thus, WEDM is an alternative to manufacture Ti-6Al-4V, in which better surface characteristics can be produced. This work explores the surface integrity of Ti-6Al-4V alloy after WEDM in different input parameter. From the experimental work, good surface integrity can be achieved with low peak current. The scanning electron microscope (SEM) analysis depicted the appearance of craters, crack, recast layer and globule of debris on the machined surface. Within the chemical composition on the machined surface, titanium seizes the highest percentage as there is no alternation of the metallurgical structure of the parent material. The microhardness value gradually increases from the machined surface to the parent material of Ti-6Al-4V due to over-aging of the machined surface and the work hardening during the process.
Effect of Process Parameter on Tensile Strength of Spot Welded S235 Sheet Using Simulation and Experimental
Authors: Yusuf Mohd Nazri , Rahman Wan Emri Wan Abdul , Manurung Yupiter H.P.
Published: June 2020

This study focused on investigation of the effect of process parameter to the tensile strength of a spot welded S235 low carbon steel through simulation and experiment. Resistance spot welding (RSW) is commonly used in joining metal sheets due to its key capabilities, which is time and cost effective as well as high adaptability for automation. However, strength and reliability of a spot welded joint especially in an auto vehicle can be unpredictable. Premature failure of a spot welded joint can be difficult to be predicted but common factors that had been discussed in many research is related with fatigue and residual stress. Process parameter is recognized as one of critical factors affecting the reliability and quality of a spot welded joint. Different type of material and thickness may require different set of parameter to achieve an optimum result. Experimental procedure alone to demonstrate and investigate the effect could be too costly and time inefficient. Therefore, design of experiment and non-linear FEM simulation analysis were used to analyze and validate the result. This study shows the significance of process parameters such as weld current and electrode pressure to the strength of a spot welded joint and accurate setting is needed prior to the welding process to achieve an optimum result.
Ergonomics Intervention in Indoor Spectrum Measurement Activities
Authors: Mohamad Eizuddin , Saad Nor Hayati
Published: June 2020

Engineers in the communication and multimedia industries in Malaysia exposed to the risk factors of work-related musculoskeletal disorders. A comprehensive study was conducted to perform ergonomic studies for indoor spectrum measurement activity to improve productivity and occupational safety and health. The study consisted of two phases, where the participative assessments and direct observations were conducted on 17 engineers. In the first phase, the indoor spectrum measurement problem identification was performed by using the portable and handheld spectrum analyser. The questionnaire, body part assessments and archival operation records were investigated. In the second phase, the ergonomics intervention was introduced with a low-cost trolley that removed the work-related musculoskeletal disorders from the engineers. The same test subject, environments, work procedures and evaluation method in phase one were repeated in phase two. The analysis was done by comparing the findings between both phases through statistical analysis, and the significant improvements of ergonomic interventions were identified. The outcome of the study concluded that the analysis and results meet the main objective.
Aerodynamic Performance of a Flapping Wing Inspired by Bats
Authors: Suhaimi Shafiq , Shuib Solehuddin , Yusoff Hamid , Kadarman A. Halim
Published: June 2020

Bio-inspiration is a design method where natural observation was used to solve a mechanical problem. In this study, a bio-inspiration meth-od was used to design a flapping wing for a Micro Air Vehicle (MAV) that is inspired by bat wings. The objective of this study is to study the aerodynamic performance of a flapping wing based on bat wings at different angles of attack. This is done using Computational Fluid Dynamics (CFD) simulation where the aerodynamic performance a wing derived from a natural bat wing shape was studied. The wing was generated by tracing the wing shape of a bat wing and the shape was generalized to produce the wing shape. In the simulation, a 2-way Fluid Structure Interaction (FSI) method was used where a Finite Element Analysis (FEA) solver was coupled with a CFD solver to simulate the wing during flapping flight. The flight condition was set at 1 m/s flight speed at a flapping frequency of 2.5Hz. From the results, it was shown that the wing has a zero-lift angle at 0o and a stall angle at 16o. It is also shown that the wing has a minimum drag angle at 3o and a maximum aerodynamic efficiency at angle of attack 12o.
Design and Development of Actuator System for Automated Polypropylene Bag Assembly Machine
Authors: Jaafar Rabiatul Adawiyah , Ihsan Ismi I. , Samsuri Ahmad M. , Mahadi Nik S.N. , Ayub Muhammad A.
Published: June 2020

Polypropylene bags are widely used in many industries especially in agriculture and food industry. However, industries especially in food or fertilizer industries, need to use the polypropylene bags that can withstand a high level of humidity. To overcome this problem, a two-layers bag is required. This two-layers bag consists of outer layer woven bag and inner layer polypropylene bag. Currently they are produced by using conventional method where they are assembled manually by the workers. This manual method causes longer production time process, a high number of workers, and higher cost for mass production. To enhance the operation performance, automated polypropylene bags assembly system is proposed. By using an automated system, it can improve quality and consistency of processes, and reduced direct human labor costs and expenses where the worker is unneeded for assembling the polypropylene bag. To overcome this problem, this project is dedicated to design and develop a new Automated Polypropylene Bag Assembly Machine (APBAM) to operate the process automatically. This machine will execute three main processes - Grasping, Handling and Feeding. This paper will focus on the design of pneumatic actuator for grasping polypropylene bags in upward and downward motion. The design will be calibrated, analyzed and evaluated. The design of automated polypropylene bags assembly system will help to solve some of the problems that have been identified.
Sguardi sul Genere. Voci in dialogo, a cura di Paolo Rigliano
Authors: Levi Flavia Micol
Published: June 2020

Da molto tempo le questioni riguardanti il genere hanno preso ampio spazio nel dibattito scientifico, sociale e culturale mondiale. In un’epoca in cui si ritiene ormai fondamentale produrre pensieri coerenti con un’epistemologia della complessità, Sguardi sul Genere. Voci in dialogo, a cura di Paolo Rigliano, è uno dei primi tentativi sistematici e seri in cui si cerca di approfondire i temi delle identità sessuali in modo scientificamente orientato, critico e non ideologico, mettendo a confronto specialisti diversi appartenenti a campi disciplinari diversi. (...)
Comment to Stephen Seligman
Authors: Barbieri Giuliana
Published: June 2020

When I was asked to read a work by Seligman, I accepted gladly becauseI was expecting an interesting ‘intersubjective encounter’ set against therepetitive interpretations that simply add more words to what has alreadybeen said or written. (...)
Comment to Stephen Seligman
Authors: Bertoli Silvia
Published: June 2020

A conceptual line of thought that emerges in Winnicott and is developed by Stern and his Infant Research, is now a concept with a broader application covering all life’s stages, through the work of Seligman. (...)
Formigas como recurso alimentar e medicinal
Authors: Silvestre Rogerio , Neto Paulo Sauda
Published: June 2020

Este texto traz uma revisão dos artigos que descrevem a importância das formigas para humanos no aprovisionamento alimentar e no tratamento de doenças, aspectos que vão além do suporte aos serviços ambientais que estes animais realizam. Reunimos e atualizamos as informações a respeito do uso das formigas como recurso alimentar e medicinal por comunidades nativas indígenas e rurais no Brasil, na América Latina e em outros continentes. Os resultados compilados do presente estudo demonstram que a mirmecofagia é ainda amplamente empregada em vários locais do mundo, sendo uma fonte nutricional importante. Ao todo, foram registradas 52 espécies de formigas utilizadas como alimento. Quanto ao uso medicinal, foram registradas, até o presente momento, 19 espécies de formigas. Além das propriedades antifúngicas e antibacterianas dos hormônios produzidos pelas glândulas mandibular e metapleural, existem os hidrocarbonetos cuticulares, bem como as secreções da glândula de veneno e das glândulas associadas ao aparelho de ferrão que produzem substâncias químicas com aplicações em problemas estomacais, respiratórios, circulatórios e também nas hemorragias, artrites e dores em geral. Assim, abordamos dois aspectos da interação formigas/humanos e destacamos o histórico do seu uso no Brasil.
Coleção Entomológica Padre Jesus Santiago Moure: um novo centro de referência para a formação de sistematas de formigas (Hymenoptera: Formicidae)
Authors: Andrade Paloma , Feitosa Rodrigo
Published: June 2020

Apresentamos aqui um breve histórico da Coleção Entomológica Padre Jesus Santiago Moure da Universidade Federal do Paraná (DZUP), Curitiba, Brasil, com ênfase na origem e na representatividade de seu recém-expandido acervo mirmecológico. Listamos os principais eventos de expansão, as instalações, os grupos de pesquisa associados e as instituições colaboradoras, essenciais para o estabelecimento do acervo de formigas da DZUP. Finalmente, destacamos o exponencial crescimento deste acervo mirmecológico, que passou de quatro gavetas entomológicas e cerca de 1.000 exemplares depositados, em 2013, para, atualmente, cerca de 360 gavetas e 180.000 exemplares.
Dining out with commoners: queens of Camponotus novogranadensis Mayr, 1870 (Hymenoptera: Formicidae) feeding outside the nest with nestmate workers
Authors: Silva Fernando
Published: June 2020

Nas colônias de formigas, há uma divisão em castas reprodutivas (rainhas e machos) e não reprodutivas (operárias e soldados). Na maioria das espécies de formigas, as tarefas externas de uma colônia madura são predominantemente desempenhadas pelas castas não reprodutivas, uma vez que as rainhas reprodutivas geralmente não saem do ninho. As rainhas são, portanto, alimentadas pelas operárias que, ao retornarem ao ninho, regurgitam uma parte do alimento fluido armazenado em seus corpos. No entanto, nesta nota, rainhas de Camponotus novogranadensis Mayr, 1870 foram registradas alimentando-se da carcaça de uma lagartixa fora do ninho junto com as operárias do mesmo ninho, em uma área antropizada em Belém, estado do Pará, Norte do Brasil.
Relação entre a circunferência da árvore e a comunidade de formigas (Hymenoptera: Formicidae) arborícolas em uma área de preservação amazônica
Authors: Andrade-Silva Joudellys , Almeida Rony Peterson Santos
Published: June 2020

Mecanismos responsáveis pela coexistência de espécies no ambiente têm implicações consideráveis na estruturação da fauna local. Aqui, avaliamos a estrutura da comunidade de formigas em uma área de floresta amazônica preservada, utilizando a circunferência das árvores como um parâmetro de heterogeneidade ambiental. Para isso, selecionamos 29 árvores, com diferentes circunferências a altura do peito (de 11 a 234 cm), e capturamos as formigas que utilizam esse substrato através de pitfalls com urina humana. Encontramos 30 espécies de formigas, mas riqueza e composição não foram influenciadas pela circunferência das árvores. Fatores combinados e mais diretamente associados à heterogeneidade ambiental, como a conectividade das árvores, devem ser levados a efeito, a fim de que tenhamos conhecimento sobre os impulsionadores locais de diversidade no estrato vertical de remanescentes amazônicos preservados.
Considerações sobre uma série de aranhas miméticas da coleção do Centro de Pesquisas do Cacau (CPDC), Bahia, e de seus possíveis modelos
Authors: Santos Jemile Viana , Delabie Jacques Hubert Charles , Brescovit Antônio Domingos , Mariano Cléa Dos Santos Ferreira
Published: June 2020

Mimetismo é um fenômeno no qual uma espécie apresenta características morfológicas derivadas da evolução convergente com outra espécie não relacionada e que lhe confere alguma vantagem seletiva. Estudar animais miméticos e seus modelos pode auxiliar na compreensão das relações ecológicas e evolutivas em uma comunidade complexa. Relacionamos aranhas miméticas de formigas com seus possíveis modelos. Definimos similaridade mímico x modelo a partir de comparações baseadas em critérios morfológicos. Analisamos 104 aranhas miméticas (11 gêneros, quatro famílias). As formigas-modelo mais frequentes são Ponerinae, predadoras agressivas comuns que exploram todos os estratos de florestas e agroflorestas. Formigas-modelo do gênero Pseudomyrmex apresentam características similares; as demais (Cephalotes, Camponotus, Crematogaster e Dolichoderus) são tolerantes a outros animais próximos ao formigueiro; além de Eciton, que são predadoras nômades, agressivas e populosas. As características mais frequentemente imitadas pelo mimético são constrições, padrões de cor, pelos distribuídos no cefalotórax e alongamento do corpo, que confundem o observador com os três tagmas da formiga-modelo. Raramente há sobreposição exata entre os detalhes morfológicos do modelo e do mimético. A morfologia dessas aranhas sugere mais as feições de um gênero/grupo de formigas do que uma única espécie-modelo
Model Tabanlı Tasarım ile Eş-Zamanlı Mühendislik: Mikro-Türbin Uygulama Örneği
Authors: SARI Olcay , BULAT Orçun , TUNÇER Onur , ÜÇLER Çağlar
Published: June 2020

Mühendislik sistemlerinin tasarımı ve geliştirilmesi karmaşık bir süreçtir ve birbirine bağlı çok sayıdaki sistem parametresinin en iyi değerlere ulaşması gerekmektedir. Özellikle gaz türbinleri gibi birçok farklı alt sistemlerden oluşan sistemlerin en verimli tasarım noktasını elde etmek farklı disiplinlerden uzmanların ortak çalışmasını gerektirir. Netice olarak, model tabanlı yazılım ortamlarında matematiksel modellerinin geliştirilmesi ve eş-zamanlı mühendislik süreci uygulanabilir. Bu süreç boyunca V-döngülü sistem mühendisliği sayesinde kavramsal tasarımın oluşturulup tartışılması, alt istemlerin detay tasarımların gerçekleştirilip entegrasyonu sonrası test simülasyonları ile optimum tasarım noktasının elde edilmesi mümkündür. Bu tasarım süreçleri, birbirleri ile etkileşimleri ve örnek bir mikro-türbin sisteminin geliştirilme süreci bu yayın içerisinde uygulama örneği olarak ele alınmaktadır.
Ada Tipi Solenoid Valflerde Akış Analizi Yardımı ile Tasarım Parametrelerinin Belirlenmesi
Authors: ÇAVDAR Kadir , KARATAŞ Mustafa , YAŞAR Hüseyin
Published: June 2020

Pnömatik kontrol alanında kullanılan solenoid valflerde oluşan iç akışların incelendiği bu çalışmada, valf pistonunun iki farklı konumu sonucunda oluşan ve akışkanın izlediği A ve B hatlarında, hat boyunca meydana gelen basınç değişiklikleri ve hız değişimleri analiz edilmiştir. A ve B hatları içinde valf üzerinde bazı tasarım değişiklikleri yapılarak bunların etkileri gözlenmiştir. Tasarım iyileştirmeleri ile sağlanan hız ve basınç dağılımında gözlenen değişiklikler, valfte oluşan akış kayıplarının azaldığı şeklinde yorumlanmıştır.
Proton Değişim Membran Yakıt Hücreleri: Termodinamiği, Bileşenleri ve Uygulama Alanları
Authors: KARANFİL Gamze
Published: June 2020

Proton değişim membran (PEM) yakıt hücreleri yakıtta depolanan kimyasal enerjiyi doğrudan ve verimli bir şekilde elektrik enerjisine dönüştüren, tek yan ürün olarak suyun oluştuğu; enerji kullanımımızı, kirletici emisyonları ve fosil yakıtlara bağımlılığı azaltma potansiyeline sahip bir teknolojidir. Uzun yıllardır süren araştırma ve geliştirme çalışmaları neticesinde ticarileşmeye başlayan PEM yakıt hücrelerinin geleneksel teknolojilere alternatif olabilmesi için hala aşılması gereken zorluklar vardır. Sürdürülebilirlik, dayanıklılık ve maliyet gibi zorlukların aşılabilmesi için PEM yakıt hücrelerinin çalışma prensibinin, termodinamiğinin ve araştırma çalışmaları hala devam eden bileşenlerinin görevlerinin detaylı olarak irdelenmesi; ayrıca potansiyel uygulama alanlarının bilinerek geliştirme çalışmalarının bu yönde devam etmesi gerekmektedir. Yapılan derleme çalışmasında, PEM yakıt hücresinin teorisinin detaylı bir biçimde incelenmesinin yanı sıra; dünya literatüründe devam eden çalışmalar ile ilgili bilgi verilmiş ve keşfediliş tarihinden bu yana olan uygulama alanları özetlenmiştir.
ECONOMIC MODELLING OF THE IMPACT
OF INFRASTRUCTURE INDUSTRIES ON THE SUSTAINABLE
DEVELOPMENT OF THE REGION
Authors: Гасанов А.М.
Published: June 2020

В статье рассматриваются вопросы экономического моделирова-
ния влияния инфраструктуры на устойчивое развитие отраслевой экономики ре-
гионов СКФО. При этом целью исследования является построить многофактор-
ные регрессионные модели результативных параметров предприятий. Исходя из
цели определены и задачи исследования. Провести анализ состояния и проблемы
развития экономики отраслевой составляющей региона в условиях инновацион-
ных преобразований предприятий, а также методов ее оценки.

The article deals with the issues of the infrastructure impact of economic modelling on the
sustainable development of the sectoral economy of the NCFD regions. At the same time, the study aims
to develop multi-factor regression models of effective parameters of enterprises. In accordance with the
aim, the objectives of the study have also been defi ned. To carry out an analysis of the state and problem
of economic development of the sectoral region in the context of innovative changes of enterprises, as
well as methods of its evaluation.
GLACIERS AND PERIGLACIAL LAKES LAKES OF THE BARTUYDON RIVER BASIN, CENTRAL CAUCASUS
Authors: Тавасиев Р.А.
Published: June 2020

В статье критически рассмотрены литературные данные по
ледникам и приледниковым озерам, расположенным в бассейне реки Бартуйдон
(левый приток реки Караугомдон, левый приток р. Терек) и изменениях, произо-
шедших на них за последние 53 года. В 1966 г. на этой территории числилось 6
ледников и 1 озеро. Сейчас здесь 15 ледников и 6 озер. Дан прогноз возможных
природных процессов, которые могут здесь произойти.

The article provides a critical review of literature data on glaciers and periglacial lakes located in the
Bartuydon River Basin (the left tributary of the Karaugomdon River, the left tributary of the Terek River) and the
changes they have undergone over the past 53 years. In 1966 there used to be 6 glaciers and 1 lake. There are14
glaciers and 6 lakes now. The paper provides a forecast of possible natural processes that may occur here.
Implementation of Immersive Classroom Simulation Activities in a Mathematics Methods Course and a Life and Environmental Science Course
Authors: Lee Carrie W. , Lee Tammy D. , Castles Ricky , Dickerson Daniel , Fales Holly , Wilson Christine M.
Published: June 2020

This study investigated the influence of immersive classroom simulation activities on the development of elementary pre-service teachers in two separate mathematics and science education courses that simultaneously focus on pedagogy and content. Participants submitted written personal reflections about their teaching experiences using the immersive classroom simulation activities. These reflections were analyzed for common emergent themes within and across courses. The participants discussed the benefits of the immersive classroom simulation activities in their written personal reflections. They viewed the experience as helpful in developing their skills as a practicing teacher in mathematics and science.

Specifically, participants identified three sub-themes including: (a) the immersive classroom simulation activities as being beneficial by providing more authentic real-life teaching experiences than those experienced during peer-group teaching activities; (b) the importance of holding complete and appropriate understandings of content when teaching mathematics and science; and (c) the role of deep content knowledge in the process of developing high quality questions for students. This study has shown immersive classroom simulation activities to be a viable alternative for teacher education programs to engage elementary preservice teachers in developing skills regarding classroom mathematics and science discourse.
Understanding Quality Work in Mathematics: Supporting Teachers in Leading Professional Development
Authors: Ruchti Wendy P. , Bennett Cory A. , Dunstan Michelle
Published: June 2020

Teacher leaders are often responsible for providing professional development to improve teacher effectiveness and student learning. Leading professional development for teachers can be highly effective when the focus is on student learning in on-going and relevant contexts. This article describes a school-based, teacher-led collaborative process conceptualized and facilitated by two teacher leaders using a modified protocol for examining students work in mathematics. The focus of the professional development aligned with a school-wide initiative of increasing the quality of students’ mathematical work across a kindergarten through eighth-grade school. This paper shares the structure of the professional development, the nature of the protocol, and how it was implemented followed by a discussion for teacher leaders who are interested in facilitating a similar type of collaborative professional development experience within their own schools. Findings suggest that the use of a well-developed protocol helped focus teachers’ attention to specific attributes expected in quality work and served as a reference point for considering how important structures of learning such as whole-class discourse could be evident in individual students’ quality work.
Attaining the Elusive: Efficacy, Math Education and Black and Latino Students
Authors: Arriaza Gilberto , Monterrosa Cesar
Published: June 2020

Low enrollment of Latino, African American, Native American, and Southeast Asian American students in science, technology, engineering, and math (STEM) classes, via advanced placement (AP) courses, remains a problem for high schools, and education leaders across the United States. More than just examining the factors behind this enrollment issue, we wanted to understand the focal factors underpinning success in AP courses of those few who do enroll. For that purpose, we grounded this case study on social cognitive theory’s central variable of self-efficacy. We found that teacher facilitated experience plays a pivotal function in students’ success in STEM education, more specifically, AP math.
Translating Research to Practice on Individual and Collective Mathematics and Science Identity Formation: Pedagogical Recommendations for Teachers
Authors: Hite Rebecca , Tauber Mona
Published: June 2020

Recruiting students to science and mathematics fields continues to be a nationwide issue, resulting in a dearth of individuals to fill present and future science and math careers. Novel interventions, especially in the K-12 space, call for a move from content acquisition to formation of individuals’ identity to foster involve science and math interest and persistence. Identity research has evidenced results, yet greater communication is needed between the research and practitioner communities to realize the potential of cultivating collective STEM identifies in the classroom. In this paper, we bridge these spaces by describing the potential affordances beyond individual identity formation to that of collective (classroom level) identity formation for K-12 teachers to consider for their math and science students, respectively. Specifically exploring how traditional K-12 classroom structures may reinforce stereotypes hindering collective mathematics and science identity formation, whereas reform-oriented classroom structures (that employ legitimate peripheral participation within a community of practice) enable them. Last, to aid practitioners who wish to engage in reform efforts, we recommend pedagogical interventions to promote opportunities for students to collectively co-construct skills specific to mathematics and science communities as a strategy to foster collective mathematics and science identities. Collective identity formation can provide K-12 classroom teachers pedagogical strategies for additional opportunities or enhanced and experiences for students to co-construct and reinforce individual identities in math and science.
Factors Influencing Student Academic Performance in Online Credit Recovery
Authors: Nourse Dave
Published: June 2020

Recent estimates show nearly 90% of school districts nationwide offer some form of online credit recovery. Despite its widespread adoption, there is a dearth of research surrounding the suitability of online credit recovery for students. This study examined potential success factors of students enrolled in virtual recovery courses in a school district in the mid-Atlantic region of the United States. Descriptive statistics, chi-square analysis, and binary logistic regression modeling was used for data analysis to account for the influence of student characteristics on credit recovery outcome. Findings revealed that grade-level, IEP status, and middle school End-of-Grade Test results could be linked to achievement in online credit recovery courses. Implications of these findings for educators are discussed.
A DISCIPLINA DE GEOGRAFIA E O DISCURSO COMPETENTE NA TERCEIRA VERSÃO DA BASE NACIONAL COMUM CURRICULAR
Authors: Santos Lidiane Rebouças
Published: June 2020

O artigo discute a Base Nacional Comum Curricular (BNCC), especialmente no que se refere a última versão do documento. Com o objetivo de compreender o discurso implícito na BNCC e o interesse de seus idealizadores na formação de competências na disciplina de Geografia, do Ensino Fundamental II, foi necessário investigar o componente currículo atrelado a relação social e escolar e o embate dialético acerca do termo competência. O método utilizado foi o materialismo histórico e dialético com aplicação da metodologia de pesquisa do tipo exploratória qualitativa e análise documental. O desenvolvimento do presente estudo possibilitou um breve reconhecimento do que propõe a BNCC para o ensino de Geografia. A BNCC instituída em tempos de globalização e associada à pedagogia da competência busca homogeneizar o processo formativo, visto que o Estado persiste na unificação de práticas, valores, conhecimentos e disposições, refletidos na BNCC por meio das competências que o sujeito deve adquirir nas novas demandas contemporâneas. A construção de uma base curricular potencializa a proposição de um conjunto de orientações, normas e regras, no entanto, o resultado desta pesquisa demonstra que é uma forma ineficaz de propor mudanças na educação brasileira se considerar outros problemas, principalmente estruturais, que vão além de questões de ordem curricular.
Estudio contrastivo de los signos españoles y eslovacos en el aula de ELE
Authors: Balogová Erika
Published: June 2020

La cuestión que se aborda en este estudio es la comparación de los signos quinésicos españoles con los de otra cultura, como es la eslovaca. El principal objetivo que nos planteamos era el de descubrir cuáles son las similitudes y/o diferencias de los movimientos corporales que se manifiestan a la hora de realizar un acto comunicativo. Asimismo, nos propusimos comprobar los conocimientos del sistema quinésico de nuestro alumnado participante que estudia español como lengua extranjera en Eslovaquia. Para la clasificación y elección del sistema quinésico de la comunicación no verbal nos hemos basado, en primer lugar, en la observación directa de los gestos en cada cultura estudiada, es decir en la española y eslovaca. A continuación hemos elaborado un cuestionario, en el cual hemos recogido todos los gestos que han sido comparados por nuestros participantes. Finalmente, hemos llevado a cabo una entrevista con nuestros participantes para recopilar los elementos diferenciadores quinésicos. Para la presentación de los resultados hemos elaborado un inventario definitivo, en el cual se recogen todos los elementos estudiados.
La creación literaria como despliegue estético para la formación humana. Una propuesta didáctica basada en las antropologías pedagógica y literaria
Authors: Saavedra Rey Sneider
Published: June 2020

Basado en las antropologías pedagógica y literaria, este artículo de investigación retoma la concepción de literatura como creación (poiesis) y explora su relevancia para la formación humana. Así, presenta una propuesta didáctica teórico-formativa de escritura, la cual ha sido llevada al aula de secundaria en tres colegios de Bogotá, Colombia, durante tres años. De acuerdo con el análisis de esta investigación-acción a la luz de la crítica educativa, su valor radica en vincular los procesos de ficcionalización con la formabilidad de las personas mediante el despliegue estético propio de la creación literaria. Por esta razón, esta experiencia constituye una alternativa complementaria a la lectura de obras y al comentario de texto sobre los que históricamente se ha desarrollado la didáctica de la literatura.
Imagens de um passado sensível: formas de memória do cangaço em arquivos públicos, pessoais e digitais
Authors: Ramos Filho Vagner Silva
Published: June 2020

O texto apresenta uma reflexão a respeito de formas de memória do cangaço, fenômeno de banditismo do Nordeste brasileiro, como um dito tema sensível nacional. Tem como problema estruturante sua transformação pelas mídias técnicas, com atenção ao lugar de imagens dos restos mortais dos cangaceiros, em contexto de expansão globalizada da cultura da memória a partir do terço final do século XX. Para a análise, suscita um debate simultâneo, em cada uma das suas partes, sobre as políticas de memória relacionadas a diferentes tipos de arquivamentos, enfatizando casos do cangaço; as singularidades dos arquivos públicos, pessoais e digitais que têm mais circulação na cena pública do tema; os lugares de fotografias entre-imagens distintas, destacando principalmente registros das cabeças cortadas e/ou mumificadas de cangaceiros. Na base da proposta, os estudos da Memória Cultural, de teorias do Arquivo e da Cultura Visual, em que se enfatiza como tais áreas repensam suas epistemologias diante do universo virtual. Daí surgem notas propositivas que visam a contribuir com a agenda de estudo contemporânea do assunto, para além da questão nacional, como algumas que despontam em escala mais global de investigação histórica.
Nunca fomos tão úteis
Authors: Lucchesi Anita , Silveira Pedro Telles da , Nicodemo Thiago Lima
Published: June 2020

Apresentação do dossiê "História global e digital: novos horizontes para a investigação histórica".
Governo digital na implementação de serviços públicos para a concretização de direitos sociais no Brasil
Authors: Cristóvam José Sérgio da Silva , Saikali Lucas Bossoni , Sousa Thanderson Pereira de
Published: June 2020

O avanço tecnológico é cada vez mais rápido e cabe à Administração Pública desenvolver um ambiente de gestão pública capaz de acompanhar esse ritmo de mudanças. Com base nesse cenário, o artigo aborda as possibilidades de utilização de Tecnologias de Informação e Comunicação (TICs) voltadas para a concretização de direitos sociais, pela via da prestação direta de serviços públicos, a partir da noção de Governo Digital. Para tanto, o estudo está divi- dido em três momentos: primeiro, apresenta-se a noção de Governo digital a partir do avanço tecnológico; depois, são analisadas as possibili- dades de aplicação das TICs como ferramentas voltadas para a prestação de serviços públicos no Brasil; por fim, discute-se as perspectivas e os desafios dessa implementação, para concluir que o Governo digital corresponde ao emprego de tecnologias de informação e comunicação na prestação de serviços públicos. A pesquisa ado- ta o método dedutivo e a técnica de pesquisa bi- bliográfica, por meio de documentação indireta
Control de Constitucionalidad en el Sistema Africano y el Diálogo entre Jurisdiciones entre las Constituciones de los Países Lusofonos
Authors: Gomes Eduardo Biacchi , Da Mata Edileny Tomé
Published: June 2020

Esto artículo aborda el control de constitucionalidad en el sistema africano de derechos humanos, para verificar cómo se lleva a cabo el diálogo entre jurisdicciones. Primero, hablaremos sobre la estructura orgánico-institucional del sistema. Además, introduciremos la interpretación del derecho regional e internacional por parte de los países de Angola, Cabo Verde, Guiné Bisssau, Mozambique y Santo Tomé y Príncipe. El método es el comparativo. Como conclusión, los ordenamientos jurídicos analizados permiten constitucionalmente la aplicación del derecho internacional de los derechos humanos dentro de sus ordenamientos, siendo necesario una conciencia de la sociedad de estos países sobre la importancia del tema.
Evaluation of Diagnostic Performance of Three Real-Time PCR Assays for the Detection of Mycobacteria Species
Authors: Kim Sang-wook , Park Young-Hee , Ko Young Jin , Kim Yoon Ho , Kim Chang Hyun , Lim Chae Seung
Published: June 2020

Background: The disease burden caused by Mycobacterium tuberculosis (MTB) complex continues to decrease in most countries. However, the diseases caused by the nontuberculous mycobacteria (NTM) become a public health problem. This study aimed to compare the diagnostic accuracy of three real-time PCR assays: AdvanSure TB/NTM real-time PCR kit (AdvanSure; LG Chem., Korea), Genedia MTB/NTM detection kit (Genedia; Green Cross MS, Korea), and PowerChek MTB/NTM Real-time PCR kit (PowerChek; Kogenebiotech, Korea) for the detection of MTB complex and NTM. Methods: Total 102 acid-fast bacilli (AFB) smear-positive and 177 smear-negative specimens from Korea University Medical Center, Guro Hospital, were enrolled. The AFB smear-positive and negative specimens were collected from November 2016 to October 2017 and November to December 2018, respectively. DNA extraction was performed using Genedia Mycobacteria DNA prep Kit (Green Cross MS, Korea). The statistical analysis was performed using MedCalc 18.11.6 (MedCalc Software, Belgium). Results: Among 261 specimens, 64 showed MTB complex growth and 28 exhibited NTM growth. The sensitivity, specificity, positive predictive value, and negative predictive value of AdvanSure/Genedia/PowerChek kits for MTB were 96.9%/95.3%/96.9%, 98.5%/99.5%/98.5%, 58.9%/80.9%/58.9%, and 99.9%/99.9%/99.9%. Whereas those for NTM detection were 81.5%/44.4%/88.9%, 99.6%/100.0%/98.7%, 57.3%/100.0%/32.8% and 99.9%/99.6%/99.9%, respectively. The area under the receiver operating characteristic curve of AdvanSure and PowerChek for NTM detection was statistically different from that of Genedia (P<0.0001). Conclusion: Three real-time PCR assays were reliable for MTB complex in AFB-positive and -negative specimens. There was a difference between these three reagents for the accuracy of NTM detection.
Estudio de áreas degradadas mediante imágenes obtenidas con un UAV (dron) y con el satélite Sentinel de la Agencia Espacial Europea
Authors: García Rodríguez María del Pilar , Sánchez Pérez de Évora Almudena
Published: June 2020

Se analiza, mediante imágenes de satélite, fotografías aéreas e imágenes tomadas con un dron, un sector protegido dentro del Parque Regional del Guadarrama (Madrid) afectado por importantes procesos de degradación. Este área se caracteriza por la presencia de fuertes cárcavas que, aunque carentes de vegetación en su mayor parte, en algunos puntos más estables, sustentan un denso bosque mediterráneo. La acción del hombre ha provocado un importante sellado del suelo con la construcción de urbanizaciones en áreas próximas que incrementan los procesos de escorrentía y, por lo tanto, afectan a la evolución de las cárcavas. El objetivo de este trabajo es hacer una cartografía detallada de estas áreas degradadas utilizando las fuentes disponibles y actualizadas: fotografía aérea, imágenes de los satélites Landsat, Spot y Sentinel e imágenes tomadas con un dron con cámara visible y de infrarrojos próximos. Son especialmente novedad, las imágenes tomadas por el satélite Sentinel y por el dron.
Análisis de la calidad visual del paisaje del Parque Nacional de la Sierra de Guadarrama mediante procedimientos indirectos: EMC y SIG
Authors: AsVallina Rodríguez Alejandro
Published: June 2020

Frente a la complejidad que supone la valoración objetiva del paisaje, la presente investigación propone una aproximación metodológica desde la evaluación indirecta de uno de los tres grandes bloques (intrínsecos, de incidencia positiva y de incidencia negativa) que forman la calidad visual de cualquier espacio, atendiendo fundamentalmente a los valores intrínsecos. El objetivo principal del análisis consistirá en descomponer todos aquellos valores y criterios que forman parte de los elementos visuales inherentes del paisaje de la Sierra de Guadarrama para, a partir de la utilización de las metodologías de evaluación multicriterio (EMC) y su combinación con las posibilidades que ofrecen los sistemas de Información Geográfica (SIG), llegar a un conocimiento suficiente de la realidad visual del entorno. Esto permitirá interpretar técnicamente los diversos factores que configuran los valores intrínsecos del Guadarrama, integrando los resultados en una cartografía temática del ámbito, que muestre detalladamente los valores de calidad visual de forma territorializada.
Técnicas de corrección de la pronunciación en Internet para el aprendizaje del Francés lengua extranjera
Authors: Tomé Díez Mario
Published: June 2020

En la enseñanza de lenguas extranjeras con los nuevos medios sociales de la web las competencias de producción oral y la corrección de la pronunciación han sido poco abordadas. Nos planteamos la utilidad y los potenciales de integración de los medios sociales de la web en un dispositivo de formación universitario para la enseñanza y aprendizaje del Francés lengua extranjera. Con el fin de desarrollar la producción oral y la corrección de la pronunciación entre los alumnos se han utilizado podcasts, blogs, redes sociales y proyectos de telecolaboración que favorecen las grabaciones audio e interacciones colaborativas entre los alumnos. Se describen las distintas técnicas de corrección de la pronunciación que han puesto en práctica los alumnos, tutores y docente en diferentes entornos y espacios web, habiendo obtenido como resultado 2 técnicas en la utilización de la escritura, 5 técnicas en la utilización de imágenes visuales, así como 4 técnicas en la utilización de la lengua hablada.
Fra 1960-tallet har det blitt forventet at foreldre skal være inkludert i pleien av barn på sykehus
Authors: Sundal Hildegunn , Petersen Karin Anna , Boge Jeanne
Published: June 2020

I perioden 1877–1940 var foreldre sjelden nevnt i norske lærebøker i sykepleie når barn på sykehus var omtalt. I 1941 utgis den første norske læreboken der det argumenteres for at foreldre bør få besøke barna sine når de er på sykehus. På 1960-tallet tas dette videre og det argumenteres i lærebøkene for at foreldre bør få delta i pleien av barn på sykehus. Siden slutten av 1980-tallet har det i norske lærebøker i sykepleie vært argumentert for omfattende foreldredeltakelse når barn er på sykehus. I denne artikkelen har vi undersøkt og drøftet mulighetsbetingelsene for inklusjonsargumentasjonen som oppstod i norske lærebøker i sykepleie på midten av 1900-tallet. Vi har argumentert for at inklusjonsnormene oppstod fordi det var til beste for barnet, men også samfunnsmessig og økonomisk fordelaktig at foreldre var sammen med barna sine på sykehus. Analysene er gjort i forlengelsen av den franske filosofen Michel Foucaults utlegninger om selvstyrt disiplinering.
English abstract
The first Norwegian nursing textbook that argued for the parents’ right to visit their children in hospital was published in 1941. The first nursing textbook to argue for the parents’ right to participate in the care of their hospitalized children was published in 1968. From 1987, Norwegian nursing textbooks have advocated full parental participation when children are in hospital. In this article, we present results from an analysis of the inclusion argumentation in Norwegian nursing textbooks and we discuss the ideological and political context that made such inclusion ideas possible. We have argued that the inclusion argument occurred because it may be in the child’s best interest, and financially beneficial to society that parents were together with their hospitalized children. The analyses are done based on the French philosopher Michel Foucault’s theories on disciplinary technologies of the self.