bluuebunny/crossref_metadata_2025 huggingface dataset:
The mechanism of sapropel formation in the Mediterranean Sea: insight from long-duration box model experiments
Authors: Dirksen Jan Pieter , Meijer Paul
Published: June 2020

Abstract. Periodic bottom-water oxygen deficiency in the Mediterranean Sea led to the deposition of organic-rich sediments during geological history, so-called sapropels. Although a mechanism linking the formation of these deposits to orbital variability has been derived from the geological record, physics-based proof is limited to snapshot and short-time-slice experiments with (oceanic) general circulation models. Specifically, previous modelling studies have investigated atmospheric and oceanographic equilibrium states during orbital extremes (minimum and maximum precession). In contrast, we use a conceptual box model that allows us to focus on the transient response of the Mediterranean Sea to orbital forcing and investigate the physical processes causing sapropel formation. The model is constrained by present-day measurement data, while proxy data offer constraints on the timing of sapropels. The results demonstrate that it is possible to describe the first-order aspects of sapropel formation in a conceptual box model. A systematic model analysis provides new insights on features observed in the geological record, such as the timing of sapropels as well as intra-sapropel intensity variations and interruptions. Moreover, given a scenario constrained by geological data, the model allows us to study the transient response of variables and processes that cannot be observed in the geological record. The results suggest that atmospheric temperature variability plays a key role in sapropel formation and that the timing of the midpoint of a sapropel can shift significantly with a minor change in forcing due to nonlinearities in the system.
Investigating the sensitivity to resolving aerosol interactions in downscaling regional model experiments with WRFv3.8.1 over Europe
Authors: Pavlidis Vasileios , Katragkou Eleni , Prein Andreas , Georgoulias Aristeidis K. , Kartsios Stergios , Zanis Prodromos , Karacostas Theodoros
Published: June 2020

Abstract. In this work we present downscaling experiments with the Weather Research and Forecasting model (WRF) to test the sensitivity to resolving aerosol–radiation and aerosol–cloud interactions on simulated regional climate for the EURO-CORDEX domain. The sensitivities mainly focus on the aerosol–radiation interactions (direct and semi-direct effects) with four different aerosol optical depth datasets (Tegen, MAC-v1, MACC, GOCART) being used and changes to the aerosol absorptivity (single scattering albedo) being examined. Moreover, part of the sensitivities also investigates aerosol–cloud interactions (indirect effect). Simulations have a resolution of 0.44∘ and are forced by the ERA-Interim reanalysis. A basic evaluation is performed in the context of seasonal-mean comparisons to ground-based (E-OBS) and satellite-based (CM SAF SARAH, CLARA) benchmark observational datasets. The impact of aerosols is calculated by comparing it against a simulation that has no aerosol effects. The implementation of aerosol–radiation interactions reduces the direct component of the incoming surface solar radiation by 20 %–30 % in all seasons, due to enhanced aerosol scattering and absorption. Moreover the aerosol–radiation interactions increase the diffuse component of surface solar radiation in both summer (30 %–40 %) and winter (5 %–8 %), whereas the overall downward solar radiation at the surface is attenuated by 3 %–8 %. The resulting aerosol radiative effect is negative and is comprised of the net effect from the combination of the highly negative direct aerosol effect (−17 to −5 W m−2) and the small positive changes in the cloud radiative effect (+5 W m−2), attributed to the semi-direct effect. The aerosol radiative effect is also stronger in summer (−12 W m−2) than in winter (−2 W m−2). We also show that modelling aerosol–radiation and aerosol–cloud interactions can lead to small changes in cloudiness, mainly regarding low-level clouds, and circulation anomalies in the lower and mid-troposphere, which in some cases, mainly close to the Black Sea in autumn, can be of statistical significance. Precipitation is not affected in a consistent pattern throughout the year by the aerosol implementation, and changes do not exceed ±5 % except for the case of unrealistically absorbing aerosol. Temperature, on the other hand, systematically decreases by −0.1 to −0.5 ∘C due to aerosol–radiation interactions with regional changes that can be up to −1.5 ∘C.
Insights in a remote cryosphere: A multi method approach to assess
permafrost occurrence at the Qugaqie basin, western
Nyainqêntanglha Range, Tibetan Plateau
Authors: Buckel Johannes , Reinosch Eike , Hördt Andreas , Zhang Fan , Riedel Björn , Gerke Markus , Schwalb Antje , Mäusbacher Roland
Published: June 2020

Abstract. Permafrost as a climate-sensitive parameter, its occurrence and distribution plays an important role in the observation of global warming. However, field-based permafrost distribution data and information on the subsurface ice content at the large area of the southern mountainous Tibetan Plateau (TP) is very sparse. Existing models based on boreholes and remote sensing approaches suggest permafrost probabilities for most of the Tibetan mountain ranges. Field data to validate permafrost models are generally lacking because access of the mountain regions in extreme altitudes is limited. The study provides geomorphological and geophysical field data from a north-orientated high-altitude catchment in the western Nyainqêntanglha Range. Our multi-method-approach combines (A) geomorphological mapping data, (B) subsurface ice-occurrence derived from electrical resistivity tomography (ERT) data, and (C) multi-annual displacement rates from Interferometric Synthetic Aperture Radar (InSAR) analysis to assess the lower occurrence of the probable permafrost around 5400 m a.s.l. in the Qugaqie basin. Periglacial landforms such as rockglaciers and protalus ramparts are located in the periglacial zone from 5300–5600 a.s.l. The altitudinal periglacial landform distribution is supported by ERT data detecting ice-rich permafrost in a rockglacier at 5500 m a.s.l. and ice lenses around the rockglacier (5450 m a.s.l.). The highest, multiannual displacement rates up to 150 mm/y are observed typically on these rockglaciers. However, seasonality of rockglacier surface displacement like in other high mountain areas is missing. This study closes the gap of unknown state of periglacial features and potential permafrost occurrence in a high-elevated basin at the western Nyainqêntanglha Range (Tibetan Plateau) and suppose – compared to other high mountain regions – a higher-elevated permafrost occurrence.
Editing for equity: Understanding instructor motivations for integrating cross-disciplinary Wikipedia assignments
Authors: Xing Jiawei , Vetter Matthew
Published: June 2020

Advances in both research and advocacy have demonstrated how Wikipedia-based education, as a movement, has grown exponentially in the last 10 years. As a result, academics know a lot more about specific learning outcomes that Wikipedia assignments might enable and are more familiar with issues of social equity (e.g., systemic biases related to gender) in the encyclopedia. Despite these advances, little scholarship has focused on instructor motivations for utilizing Wikipedia assignments. This paper reports on a survey of over 100 instructors engaged in Wikipedia-based education practices in order to contribute a cross-disciplinary picture of instructor motivations. Our findings suggest that instructors take up Wikipedia-based assignments for a number of reasons beyond learning objectives: including social influence (being inspired by others), providing students an opportunity to contribute to public knowledge, and motivations related to addressing social equity, among others. Participants who are directly motivated to address issues of social equity rationalize their pedagogy as opportunities for activism or advocacy, professional identity, and critical pedagogy. Finally, this paper provides recommendations to Wikipedia Education stakeholders in regards to the finding that instructors’ professional identities play a significant role in their motivation to address issues of social equity.
NUDT15 gene variants and thiopurine-induced leukopenia in patients with inflammatory bowel disease
Authors: Matsuoka Katsuyoshi
Published: June 2020

Thiopurine has been used to maintain remission and to reduce antidrug antibody formation in monoclonal antibody therapy in patients with inflammatory bowel disease (IBD). The use of thiopurine is limited by side effects such as leukopenia. Thiopurine S-methyltransferase (TPMT) variants are associated with thiopurine-induced leukopenia in Westerners, but the frequency of the risk alleles is low in Asians. Recently, a variant in the nudix hydrolase 15 (NUDT15) gene (R139C, c.415C > T) was reported to be associated with early severe leukopenia in Asians. NUDT15 is an enzyme that converts 6-thio-(deoxy)guanosine triphosphate (6-T(d)GTP) to 6-thio-(deoxy)guanosine monophosphate (6-T(d)GMTP). The R139C variant impairs the stability of the protein and increases incorporation of 6-TGTP and 6-TdGTP into RNA and DNA, respectively, resulting in leukopenia. The frequency of C/C, C/T, and T/T are approximately 80%, 20%, and 1%, respectively in East Asians. Early leukopenia occurred in less than 3% of patients with C/C and in around 20% of those with C/T, whereas it occurred in almost all patients with T/T. Patients homozygous for this variant also develop severe hair loss. The measurement of NUDT15 R139C can increase the safety of thiopurine dramatically and is a successful example of personalized medicine in the field of IBD.
The Dreaded Weintraub
Authors: Pharand Michel , Wixson Christopher
Published: June 2020

A tribute to the late Stan Weintraub composed of excerpts from “The Dreaded Weintraub” and a selected bibliography of his writings related to Bernard Shaw.
‘Houses of Mercy’: The Healthcare Initiatives of the Woman's Home Missionary Society in Alaska
Authors: Parrish Alex Gunter
Published: June 2020

The Woman's Home Missionary Society of the Methodist Episcopal Church was active in evangelism in Alaska between the early 1880s and late 1930s. A central concern for the Society was the physical health of Alaska Natives. The Society missionaries argued that Native health suffered from both poor home life and a biological predisposition to illness. In order to remedy the illnesses, especially tuberculosis, Society missionaries sought to educate Native women in ‘proper’ mothering or attempted to remove children from Native communities.
Vivências de estágio de ciências da natureza no contexto da educação do campo: uma análise crítico-reflexiva
Authors: Santos Josimar De Jesus , Porto Klayton Santana
Published: June 2020

O objetivo deste artigo foi relatar as experiências vivenciadas no desenvolvimento do estágio supervisionado, como forma de discutir a relevância do estágio na formação inicial do professor e da professora de ciências da Educação do Campo. Para isso, buscamos relacionar as referências bibliográficas de autores importantes para a discussão da educação do campo, a saber: Arroyo (2004), Caldart (2004/2009), Fernandes (2004), Molina (2004), entre outros, com as experiências e vivências do autor no seu campo de estágio. O Estágio Supervisionado I na área de Ciências da Natureza foi realizado no Assentamento Alto Bonito, povoado de Cansanção – Bahia, na Escola Municipal do Assentamento Alto Bonito, com a turma do nono ano da referida instituição educacional. As pesquisas bibliográfica, documental e de campo, com abordagem qualitativa, embasaram a escrita deste artigo, as quais foram analisadas a partir do cruzamento dos dados coletados por meio da observação, diálogos, entrevistas e atividades durante o estágio. Entre os resultados mais importantes, podemos destacar a gama de novos conhecimentos e experiências obtidos pelo estagiário e pelos alunos da escola do campo, além disso foram observadas a precariedade e a falta de investimentos tecnológicos e financeiros nas instituições escolares do campo, o que dificulta a efetivação de uma educação integral e de qualidade.
O trabalho dos professores de Ciências e Biologia dos colégios estaduais de Tibagi-PR: precarização e naturalização
Authors: Lima Elisângela Aparecida Ferreira de , Souza Rodrigo Diego de
Published: June 2020

O estudo sobre as condições de trabalho dos Professores é fundamental para pensar criticamente a Prática Pedagógica na Educação em Ciências e Biologia, nessa direção, o objetivo desta pesquisa consistiu em analisar as características e perspectivas dos docentes sobre o trabalho dos professores de Ciências e Biologia de Tibagi-PR nas especificidades e na singularidade desta cidade paranaense. Para tanto, fez-se um estudo teórico e de campo empírico com sete professores que atuam nos quatro Colégios Públicos Estaduais, localizados nas Zonas Urbana e Rural do município. Os dados foram analisados qualitativamente, em que se constatou: 1) a necessidade da democratização da Educação e do acesso à Educação; (2) a naturalização da precarização das condições objetivas do trabalho dos professores em questão; (3) a garantia de políticas de valorização e manutenção dos professores nas cidades interioranas e nas zonas rurais, pois a maioria dos professores estão próximos da aposentadoria e são poucos os novos professores atuantes nos colégios da região em estudo; (4) a culpabilização apenas dos alunos como desinteressados pelas aulas em detrimento de uma visão mais ampla de todas as condições estruturais que permeiam os processos educativos no Ensino de Ciências e Biologia. Neste artigo estão as análises iniciais desta pesquisa, considerando-se que o estudo terá continuidade.
Investigate the Relation between Psychological Well-being, Self-efficacy and Positive Thinking at Prince Sattam bin Abdul Aziz University Students
Authors: Hussein Alkhatib Maha Ahmed
Published: June 2020

The current study aimed to investigate the relationship between psychological well-being, self-efficacy and positive thinking, among Prince Sattam Bin Abdul Aziz University’s students in Saudi Arabia. To answer the study questions, three questionnaires were administrated, two were submitted by the researcher (psychological well-being and self-efficacy), positive thinking scale by (Radi & Metib, 2017) to 350 university students with range age of 18 to 36 years old. The study adopted a descriptive design to measure the degree of correlation between variables, Results of the study showed that students have moderate psychological well-being level, and that there was a positive relationship between psychological well-being; self-efficacy and positive thinking, also research results indicated that there was a positive relationship between self-efficacy and positive thinking, but the results showed that (gender, faculty, acedamic level) had no impact on psychological well-being or positive thinking. The impact was within (academic level) on self-efficacy in benefit of master degree group.
Agronomic performance of grain sorghum in different spatial arrangements
Authors: Rocha Antonio Germano Carpim , Carmo Eduardo Lima do , Braz Guilherme Braga Pereira , Ribeiro Júnior Luiz Fernando , Menezes Carlos César Evangelista de , Simon Gustavo André , Sousa João Vitor Alves de , Rocha Maria Eduarda Carpim
Published: June 2020

Grain sorghum has been cultivated extensively in the Central-West region of Brazil in succession with soybean, since the species tolerates the low rainfall conditions recorded during this growing season. Phytotechnological adjustments for sorghum are still necessary in order to exploit the maximum yield potential of the crop. In this context, altering the plant distribution may result in better utilization of the growing area with a consequent increase in grain yield. On this basis, field experiments were conducted with two grain sorghum hybrids, replicated in two different locations, in order to evaluate the effect of the spatial arrangement of plants on the agronomic performance of grain sorghum. The design was a randomized complete block design in a 2 x 4 factorial scheme, with five replications. The factors consisted of two row spacings (0.50 and 0.25 m) and four plant densities: 120, 180, 240, and 300 thousand plants ha-1. The sorghum hybrids used were 1G244® and 1G100®. At harvest, morphological characteristics, yield components, and grain yields were evaluated. Row spacing did not influence the characteristics evaluated except for the plant height of for both hybrids, in addition to the stem diameter, tillering, and mass of a thousand grains for 1G100®. The increase in plant density provided an increase in grain yield, being the highest number of panicles per area the most expressive component for this behavior.
Performance of beans after inoculation with azospirillum brasilense and rhizobium tropici, and nitrogen and molybic fertilizations under amazonian conditions
Authors: Melo Filho Luiz Cobiniano de , Henrique Ivanildo Guilherme , Arf Orivaldo , Oliveira Darllan Junior Luiz Santos Ferreira de , Lima Antonio Anicete de , Macedo Marcos Aurélio Anequine , Mendes Juliana Pereira , Oliveira Romário Batista de Lima
Published: June 2020

Beans are nutrient-demanding plants, with a high demand for nitrogen (N). Nitrogen biological fixation (NBF) is probably the best solution to meet this demand, especially considering losses in the soil-plant-atmosphere system. Molybdenum (Mo), present in the enzymes nitrogenase and nitrate reductase, is fundamental in the metabolism of N, including NBF. This study aims to evaluate if bean seed inoculation with Azospirillum brasilense, Rhizobium tropici, and possible interactions with nitrogen topdressing and molybdenum leaf application, may affect winter bean development and yield. A randomized complete block design was used in a 4x2x2 factorial scheme. Plant population, production components, and grain yield were evaluated in two crop seasons (2017 and 2018). Seed inoculation with A. brasilense, when associated with 30 kg ha-1 N topdressing, increased plant population, pod number per plant and grain yield. Nitrogen topdressing is key to increasing winter bean productivity, regardless of inoculation or Mo foliar application.
Nutritional value of pre-dried banana tree pseudostem ammoniated with protected urea
Authors: Rigueira João Paulo Sampaio , Jesus Nathália Gonçalves de , Sales Eleuza Clarete Junqueira de , Rocha Júnior Vicente Ribeiro , Santos Alexandre Soares dos , Silva Fredson Vieira e , Albuquerque Carlos Juliano Brant , Silva Marcos Felipe Pereira da , Moura Marielly Maria Almeida , Monção Flávio Pinto
Published: June 2020

The objective of this study was to evaluate the chemical composition, pH and rumen degradability of banana tree pseudostems pre-dried and ammoniated with different doses of urea (0, 0.5, 1.0, 1.5 and 2.0% in natural matter). The experiment consisted of five treatments (doses of urea) with six replications, following a completely randomized design. There was a linear increase in the pH (P < 0.01) of the banana tree pseudostems pre dried with the inclusion of urea. There was no difference (P > 0.05) in dry matter, ash, neutral detergent fiber, acid detergent fiber, lignin, non-fibrous carbohydrates and total digestible nutrients; the averages were 31.58, 18.82, 46.43, 9.30, 11.87 and 42.52%, respectively. The inclusion of 2% urea increased the crude protein content (P < 0.01) by 42.75%, the soluble fraction "a" by 31.82%, and the potential and effective degradability of dry matter by 15.49% compared to that of the control group (without urea). The potentially degradable fraction, time of colonization and ruminal repletion of the neutral detergent fiber of the pre-dried banana tree pseudostems were not altered with the inclusion of urea (P > 0.05). The ammonization of the pre-dried banana tree pseudostems with 2% of urea improved the chemical composition and rumen degradability of the dry matter.
Reviewer Acknowledgements for English Language and Literature Studies, Vol. 10, No. 2
Authors: Ding Alice
Published: June 2020

Reviewer Acknowledgements for English Language and Literature Studies, Vol. 10, No. 2, 2020.
Reviewer acknowledgements for International Journal of English Linguistics, Vol. 10, No. 3
Authors: Xu Diana
Published: June 2020

Reviewer acknowledgements for International Journal of English Linguistics, Vol. 10, No. 3, 2020. 
Cross-Linguistic Influence at Lexical Level: An Exploratory Study of How Arabic Speakers Acquire Chinese Onomatopoeias
Authors: Albaqami Rashidah
Published: June 2020

Empirical evidence suggests that the first language (L1) has a fundamental role in the second language (L2) development, especially at the lexical level. Studies of L2 development have reported a relationship between negative L1 transfer and L2 poor comprehension. It is evident that cross-linguistic transfer might also take place during the course of third language (L3) development and that the impact may be from L1. At the lexico-semantic level, this study examines onomatopoeia as a property of L3 acquisition that requires Arabic learners of Chinese to identify some new lexicons with meanings and functions that might not exist in their L1. Given that onomatopoeia, in general, is often not taught sufficiently and explicitly in many language classroom contexts across the world, the purpose of the current study is to determine the extent to which transfer from L1 influence L3 comprehension and to establish the conditions in which L1 was the prevailing impact. A total of 45 Arabic native speakers were asked to translate a number of Mandarin Chinese onomatopoeic expressions (n = 20) into Arabic. The findings suggest that Arabic learners find Mandarin Chinese onomatopoeic expressions, that neither have Arabic nor English direct counterparts, significantly challenging. The study concludes that enhancing awareness of lexical transfer through a focused consideration of the common difficulties seems crucial for L3 learners to attain comprehensive mastery.
Reviewer Acknowledgements for Journal of Education and Learning, Vol. 9, No. 3
Authors: Lin Grace
Published: June 2020

Reviewer Acknowledgements for Journal of Education and Learning, Vol. 9, No. 3, 2020
Reviewer Acknowledgements for Journal of Management and Sustainability, Vol. 10, No. 1
Authors: Xiao Evelyn
Published: June 2020

Reviewer Acknowledgements for Journal of Management and Sustainability, Vol. 10, No. 1, 2020.
Reviewer Acknowledgements for Modern Applied Science, Vol. 14, No. 6, June 2020
Authors: Lee Sunny
Published: June 2020

Reviewer Acknowledgements for Modern Applied Science, Vol. 14, No. 6, June 2020
The Relationship between Empirical Legal Studies and Doctrinal Legal Research
Authors: Davies Gareth
Published: June 2020

The Relationship between Empirical Legal Studies and Doctrinal Legal Research

This article considers how empirical legal studies (ELS) and doctrinal legal research (DLR) interact. Rather than seeing them as competitors that are methodologically independent and static, it suggests that they are interdependent activities, which may each be changed by interaction with the other, and that this change brings both opportunities and threats. For ELS, the article argues that DLR should properly be understood as part of its theoretical framework, yet in practice little attention is given to doctrine in empirical work. Paying more attention to DLR and legal frames generally would help ELS meet the common criticism that it is under-theorised and excessively policy oriented. On the other hand, an embrace of legal thinking, particularly of critical legal thinking, might lead to loss of status for ELS in policy circles and mainstream social science. For DLR, ELS offers a chance for it to escape the threat of insular sterility and irrelevance and to participate in a founded commentary on the world. The risk, however, is that in tailoring legal analysis to what can be empirically researched legal scholars become less analytically ambitious and more safe, and their traditionally important role as a source of socially relevant critique is weakened. Inevitably, in offering different ways of moving to normative conclusions about the law, ELS and DLR pose challenges to each other, and meeting those challenges will require sometimes uncomfortable self-reflection.
Stoian t. Roemenië: stap terug of status quo? Een EHRM-casus over het recht op inclusief onderwijs
Authors: Spinoy M. , Lievens J.
Published: June 2020

Stoian t. Roemenië: stap terug of status quo?

In het recente arrest Stoian t. Roemenië oordeelt het Europees Hof voor de Rechten van de Mens (EHRM) over de onderwijssituatie van een jongen met een beperking in Roemenië. Het Hof beoordeelt de zaak vanuit de redelijke aanpassingsplicht en besluit dat die niet geschonden is. In deze bijdrage bespreken en analyseren de auteurs dit arrest dat het Hof op veel kritiek kwam staan. Ze houden daarbij in het bijzonder rekening met het VN-Verdrag inzake de Rechten van Personen met een Handicap (IVRPH) en relevante voorgaande rechtspraak van het EHRM. In het arrest krijgen de principes van het IVRPH (opnieuw) een centrale plaats. De toepassing van die principes is minder eenduidig. Het arrest doet immers belangrijke vragen rijzen over de manier waarop het EHRM twee belangrijke IVRPH-verplichtingen inzake onderwijs toepast. Het IVRPH omvat onder meer de verplichting tot het voorzien van een toegankelijk onderwijssysteem en de verplichting in redelijke aanpassingen te voorzien. Die verplichtingen zijn er beide op gericht onderwijs toegankelijk te maken voor kinderen met een handicap. Tussen de twee verplichtingen bestaan echter belangrijke verschillen, onder meer inzake afdwingbaarheid. Het EHRM lijkt deze verplichtingen niet correct van elkaar te onderscheiden en aan de twee tegelijk te toetsen. Daarnaast is niet duidelijk hoe streng het Hof de verplichtingen van staten toetst in deze materie. De toetsingsintensiteit lijkt in Stoian lager te liggen dan in eerdere zaken. De auteurs besluiten dan ook dat het arrest geen echte zekerheid brengt over de standaarden die het Hof in volgende zaken zal hanteren.
Competitiveness of European Union countries in terms of the level of digitalization
Authors: Kleszcz Agnieszka , Nowak Ewa
Published: June 2020

Digitalization involves an increase in the use of information and communication technologies (ICT) in all areas of the economy and all domains of the functioning of a society. Technologies of this kind affect the level of competitiveness of economies. The aim of the article is to compare the levels of competitiveness of European Union countries in the field of information and communication technologies, on the basis of indices developed by international institutions.The European Commission, World Economic Forum and Eurostat databases were used for comparative analysis of economies. Synthetic indices, such as the 9th pillar of the Global Competitiveness Index (GCI Pillar 9), the European Digital Economy and Society Index (DESI) and the Networked Readiness Index (NRI) were used to compare the levels of digitalization of the economies. The actual individual consumption (AIC) value was adopted as an indicator of the wealth of EU economies. Changes in single indices were analysed as follows: in the NRI in 2014–2016, in the GCI Pillar 9 in 2015–2017 and in the DESI in 2016–2018, while the multi-character classification of countries according to the three variables (the NRI, DESI and GCI Pillar 9) was performed for the year 2016. Ward's hierarchical method and non-hierarchical analysis of k-means clusters were used to this effect. The multiple regression model revealed relationships between the welfare level measured by the AIC and the level of digitalization. The NRI turned out to be the best predictor. The results of the analysis indicate that there are still differences between the ‘old’ and the ‘new’ EU countries in terms of the development of the ICT sector.
Brain, mind and education – we have found the way, whether we are wandering along the wilderness?
Authors: Pawlak Bożena
Published: June 2020

In recentyears, we have witnessed an intensive development of many New areas of research and scientific research, to chich undoubtedly belong those referred to as neuroscience, thatis, focusing on the study of the human brain and nervous system. In my speech I would like to review opinions on possibile attempts to relate brain research results to school conditions as well as teaching and learning concepts. The following concepts will be analyzed: neurodidactics, neuropedagogy and neuroeducation. I will also present my proposition of under standing neuroeducation as anactivity focused on:
1) development of cognitive processes of learners and awareness of the existence of these processes;
2) education of learning process management,
3) getting to know and better understanding of the learning process through the prism of functioning: brain, mind and education.
Neuroeducation understood in this way is, in my opinion, a chance for a new perspective of in sight into learning processes and, in the longer term, teaching. It can therefore be addressed to pupils and students, but also to teachers. The direction of neuroeducation thought outlined in the article, in my opinion, fits in with the thinking about constructivist variation, objectivist today (according to Dorota Klus-Stańska) paradigm of neurodidactics.
Effects of acrylamide in the presence of vitamin E on sperm parameters, chromatin quality, and testosterone levels in mice
Authors: Anvari Morteza , Talebi Ali Reza , Mangoli Esmat , Shahedi Abbas , Ghasemi Mohammad Rasool , Pourentezari Majid
Published: June 2020

Objective: The present study investigated sperm chromatin quality and testosterone levels in acrylamide-treated mice and the possible protective effects of vitamin E on the fertility potential of spermatozoa. Methods: Thirty-two adult male mice were divided equally into four groups. Group 1 was the control, group 2 received acrylamide (10 mg/kg, water solution), group 3 received vitamin E (100 mg/kg, intraperitoneal), and group 4 received both acrylamide and vitamin E. After 35 days, spermatozoa from the right cauda epididymis were analyzed in terms of count, motility, morphology, and viability. Sperm DNA integrity and chromatin condensation were assessed by acridine orange (AO), aniline blue (AB), toluidine blue (TB), and chromomycin A3 (CMA3) staining. Results: In acrylamide-treated mice, significantly lower sperm concentration, viability, motility, and testosterone levels were found in comparison with the control and acrylamide+vitamin E groups (p<0.05). In the vitamin E group, significantly more favorable sperm parameters and testosterone levels were found than in the other groups (p<0.05). There were also significantly more spermatozoa with less condensed chromatin in the acrylamide-treated mice than in the other groups. Moreover, significantly more spermatozoa with mature nuclei (assessed by AB, CMA3, AO, and TB staining) were present in the vitamin E group than in the control and acrylamide+vitamin E groups. Conclusion: This study revealed the deleterious effects of acrylamide on sperm parameters and sperm chromatin quality. Vitamin E can not only compensate for the toxic effects of acrylamide, but also improve sperm chromatin quality in mice.
Cumulative live birth rate after up to three consecutive embryo transfer cycles in women with poor ovarian response
Authors: Kim Se Jeong , Lee Dayong , Kim Seul Ki , Jee Byung Chul , Kim Seok Hyun
Published: June 2020

Objective: In the present study, we aimed to retrospectively evaluate the cumulative live birth rate (LBR) after up to three consecutive embryo transfer (ET) cycles, either fresh or frozen, in women with expected poor ovarian response (ePOR). Methods: We selected 115 women who entered the first in vitro fertilization (IVF) cycle between August 2013 and July 2016. The women were divided into an ePOR group (37 women) and a non-ePOR group (78 women). All women in the ePOR group were ≥40 years old or had serum anti-Müllerian hormone levels of less than 1.1 ng/mL at the time of the first IVF cycle. Live birth outcomes were monitored until December 2017. The cumulative LBR (with both conservative and optimistic estimates) was calculated according to the serial number of ET cycles. Results: After up to three ET cycles, the overall cumulative LBR was significantly lower in the ePOR group than in the non-ePOR group (conservative estimate, 10.8% vs. 44.9%, respectively; optimistic estimate, 14.7% vs. 56.1%, respectively; log-rank test, p=0.003). Conclusion: Women with ePOR exhibited a lower cumulative LBR than women in the non-ePOR group, and this information should be provided to ePOR women during counseling before starting IVF.
Mecanismos de Comunicação entre Clusters para Lightweight Manycores no Nanvix OS
Authors: Souto João Vicente , Penna Pedro Henrique , Freitas Henrique Cota , Castro Márcio
Published: June 2020

Ambientes de desenvolvimento para lightweight manycores pecam em prover uma boa relação entre programabilidade e portabilidade. Neste contexto, este artigo propõe mecanismos de comunicação entre clusters para um sistema operacional distribuído que sejam precisos, fáceis de usar, escalonáveis e facilmente portáveis. Os resultados mostram ser possível suportar algoritmos de comunicação colectiva de forma eficientemente.
Análise do funcionamento de dispositivos LoRa e LoraWAN na cidade de Caxias do Sul/RS
Authors: Chinato Acácio , Garcia Ricardo , Da Silva Joel , Carvalho Eduardo , De Lima Marcelo , De Lima João Vitor , Ferrigo Samuel
Published: June 2020

O LoRa é uma das tecnologias que oferece comunicação a longas distâncias com baixo consumo de energia para dispositivos IoT. Neste trabalho foram testados o alcance da transmissão e sua integração com a rede LoraWAN existente na cidade de Caxias do Sul/RS. Como resultados obtidos, chegou-se à distância máxima de 240 metros e foi possível conectar-se à rede LoraWAN somente através de um gateway alternativo.
Avaliação Experimental da Configuração do Threshold de Balanceamento de Réplicas no HDFS Balancer
Authors: Barcelos Patricia Pitthan , Fazul Rhauani Weber Aita
Published: June 2020

O HDFS Balancer opera através de um threshold que determina o nível de equilíbrio a ser atingindo com a redistribuição dos dados. Definir um threshold ideal, entretanto, apresenta-se com um desafio para o administrador do sistema. Este trabalho analisa o comportamento do HDFS através de experimentos com variações na configuração do threshold. Os resultados demonstram as melhorias de desempenho impulsionadas pelo balanceamento do cluster.
Análise Empírica do Desempenho de Redes de Comunicação em Contêineres: um Estudo Preliminar
Authors: Mentz Lucas Litter , Koslovski Guilherme Piêgas
Published: June 2020

O encapsulamento de aplicações de alto desempenho em contêineres permite melhores desempenhos em cenários limitados por memória ou processamento, entretanto limita a liberdade de conectividade entre as tarefas. Para assemelhar a comunicação de contêineres à de redes convencionais são usados network drivers específicos. Neste trabalho são revisados os principais drivers de rede padrão do Docker e uma coleção de trabalhos abordando seus desempenhos. Por fim, uma proposta de análise empírica de desempenho das redes de comunicação em contêineres Docker é apresentada.
Exploração de Paralelismo em Ambiente de Memória Distribuída e Híbrida para Simulação de CFD Aplicada
Authors: Specht Mateus , De Pinho Leonardo Bidese , Perez Naylor Bastiani
Published: June 2020

O presente trabalho explora uma aplicação de fluidodinâmica computacional para simular um aplicador de herbicida para controle de ervas daninhas em pastagens. O tempo de execução do processamento em arquiteturas computacionais de memória distribuída e híbrida foram comparados para identificar a capacidade de exploração do potencial de paralelismo do sistema.
Effects of Biodiesel Blends Varied by Cetane Numbers and Oxygen Contents on Stationary Diesel Engine Performance and Exhaust Emissions
Authors: Maroa Semakula , Inambao Freddie
Published: June 2020

This work investigated waste plastic pyrolysis oil (WPPO), 2-ethyl hexyl nitrate (EHN), and ethanol as sources of renewable energy, blending conventional diesel (CD), WPPO, and ethanol with EHN was to improve the combustion and performance characteristics of the WPPO blends. EHN has the potential to reduce emissions of CO, CO2, UHC, NOX, and PM. Ethanol improves viscosity, miscibility, and the oxygen content of WPPO. Mixing ratios were 50/WPPO25/E25, 60/WPPO20/E20, 70/WPPO15/E15, 80/WPPO10/E10, and 90/WPPO5/E5 for CD, waste plastic pyrolysis oil, and ethanol, respectively. The mixing ratio of EHN (0.01%) was based on the total quantity of blended fuel. Performance and emission characteristics of a stationary 4-cylinder water-cooled diesel Iveco power generator were evaluated with ASTM standards. At 1000 rpm, the BSFC was 0.043 kg/kWh compared to CD at 0.04 kg/kWh. Blend 90/WPPO5/E5 had the highest value of 14% for BTE, while the NOX emissions for 90/WPPO5/E5, 80/WPPO10/E10, and 70/WPPO15/E15 were 384, 395, and 414 ppm, respectively, compared to CD fuel at 424 ppm. This is due to their densities of 792 kg/m3, 825 kg/m3 which are close to CD fuel at 845 kg/m3 and the additive EHN. These results show blends of WPPO, ethanol and EHN reduce emissions, and improve engine performance, mimicking CD fuel.
Flipped-Small Private Tuition Online Course in Learning English for Rural Students
Authors: Halili Siti Hajar , Sulaiman Hamidah
Published: June 2020

There is still a lack of studies to implement a Small Private Online Course for learning communities. This study aimed to identify the teaching and learning (T&L) process carried out when using an English Flipped-Small Private Tuition Online Course (EESPtoc) based on Gagne’s theory. Using purposive sampling, respondents were selected among rural primary school students. The respondents were introduced to the EESPtoc, which is a free tuition online platform for 4 sessions. A questionnaire and interview were used to collect data. SPSS software was used for data analysis in the form of descriptive statistics. Findings show that students have positive responses toward the use of EESPtoc and the interview had also supported the finding of the survey. To enhance this study, further research is recommended to look into the long-term effects of exploring retention of knowledge and skills from the use of the EESPtoc in the T&L process.
Suppression of Menstrual-Related Migraine Attack Severity Using Pyridoxine, Thiamine, and Cyanocobalamin: A Quasi-Experimental Within-Subject Design
Authors: Togha Mansoureh , Rahmanzadeh Reza , Nematgorgani Shiva , Yari Zahra , Razeghi Jahromi Soodeh , Refaeian Farshid
Published: June 2020

Background: B-group vitamins can potentially contribute to migraine prophylaxis through various mechanisms. We conducted a quasi-experimental study to assess the efficacy and tolerability of a combination of vitamins B1, B6, and B12 (Neurobion) for prophylaxis of menstruation-related migraine attacks. Methods: Women diagnosed with menstrual-related migraine, both chronic and episodic headaches, were enrolled. The patients began Neurobion therapy one week before the menstruation cycle, and repeated the injection for three consecutive months; each ampoule contained 100 mg of vitamins B1 and B6 as well as 1000 μg of vitamin B12. Neurobion was used as an add-on therapy for patients receiving the same prophylactic therapy during the last two months before the start of the study. The outcome parameter examined the severity of menstrual-related migraine attacks on a 10-point visual analog scale (VAS). Results: Three hundred eighty-three patients (169 with chronic migraine and 214 with episodic migraine) were included in the final analysis. The patients received treatment with a combination of vitamins B1, B6, and B12 with positive results. The mean intensity of menstrual-related migraine attacks was reduced from 6.7 on the 10-point VAS to 3.2 (P < 0.001) in patients with chronic migraine. The mean severity of menstrual-related migraine attacks was also reduced from 7.2 to 3.7 in patients with episodic migraine (P < 0.001). There was no significant difference in the reduction of headache severity between the two groups of migraineurs (P = 0.985). Conclusions: Neurotropic vitamins, including pyridoxine, thiamine, and cyanocobalamin yielded significant reductions in the severity of menstrual-related migraine attacks. Neurobion as a combination of vitamins B1, B6, and B12 appears to be well-tolerated and beneficial as an adjuvant in treatment and prophylaxis of menstrual-related migraine attacks. Further large-scale trials with long-term follow-up will be required to confirm our results.
Fluoride Release and Recharge Properties of Several Fluoride-Containing Restorative Materials
Authors: Lee Dongyun , Kim Jongsoo , Han Miran , Shin Jisun
Published: June 2020

The aim of the study is to compare the fluoride release and recharge properties of glass ionomer cements and ‘alkasite’.
Specimens of two glass ionomer cements (Fuji Ⅸ GP and Riva Self Cure), ‘alkasite’ restorative material (Cention N) and composite resin (FiltekTM Z350XT) were prepared. The fluoride release of each specimen was measured for 28 days. Thereafter, 1.23% acidulated phosphate fluoride (APF) gel was applied to experimental groups. No treatment was performed on control groups. The fluoride release was measured for additional 7 days to evaluate the fluoride recharge properties of each materials.
The fluoride release was highest in Riva Self Cure, followed by Fuji Ⅸ GP, Cention N (p < 0.05). Fluoride release of Cention N was measured to be approximately 49% of Fuji Ⅸ GP’s. After the application of 1.23% APF gel, increases in fluoride release were observed in Riva Self Cure, Fuji Ⅸ GP and Cention N (p < 0.05). Fluoride recharge was observed in Cention N as well as in glass ionomer cements. Further studies are required to evaluate the anti-cariogenic properties of Cention N at clinical conditions.
Street Art y videojuegos: el caso de Invader
Authors: Márquez Israel
Published: June 2020

Resumen: El presente artículo analiza las relaciones entre street art y videojuegos como un ejemplo concreto de nueva práctica artística en el espacio urbano. Para ilustrar esta relación analizamos el proyecto artístico del artista urbano francés Invader, quien ha construido su identidad artística a partir de la apropiación material de los famosos personajes del videojuego Space Invaders y su traslado del espacio digital de la pantalla al espacio público de la calle.Abstract: The article analyzes the relationship between street art and video games as a new type of art practice in urban space. To illustrate this relationship, we analyze the work of the French street artist known as Invade. This artist has appropriated the characters from Space Invaders classic video game to build his artistic identity, transferring them from the digital space of the screen to the public space of the street.
Música de Boccherini en Prusia gracias al conde de Fernán Núñez (1773)
Authors: Rosal Nadales Francisco José
Published: June 2020

Resumen: La historiografía sobre Luigi Boccherini había dado como fecha de contacto entre este y el príncipe Federico Guillermo de Prusia el año 1783. A partir del estudio de los viajes que realizó el VI Conde de Fernán Núñez por Europa, se puede conocer que, en el otoño de 1773, conoció al heredero en Potsdam, le escuchó tocar el violonchelo y, como acto de cortesía, regaló al príncipe Hohenzollern unos tríos de Boccherini. Por tanto, se debe adelantar en diez años la fecha en la que Federico Guillermo conoció de primera mano la obra del compositor italiano. Sin embargo, queda averiguar qué tríos pudieron ser. En la fecha del encuentro, solo los Op. 1, 4 y 6 habían visto la luz, por lo que debe acotarse a ellos la búsqueda.Abstract: The historiography about Luigi Boccherini had given as a date of contact between this and Prince Frederick William of Prussia the year 1783. From the study of journeis made by VIº Count of Fernán Núñez through Europe, it can be know that, in the autumn of 1773, he met the heir in Potsdam, heard him play the cello and, as an act of courtesy, he gave the prince Hohenzollern some string trios of Boccherini. Therefore, the date on which Frederick William knew first hand the work of the Italian must be advanced in ten years. However, it remains to be found what string trios they could be. On the date of the meeting, only the Op. 1, 4 and 6 had seen the light, so the search should be limited to them.
Ensoñaciones algorítmicas. Materialismo histórico en la era digital
Authors: Nevado Encinas Juan Luis
Published: June 2020

Reseña de la obra/ Book Review: Cancela Rodríguez, Ekaitz (2019), Despertar del sueño tecnológico. Crónica sobre la derrota de la democracia frente al capital. Madrid: Akal. 445 p. ISBN: 978-84-460-4724-7.
A modelagem integrada ao projeto de moda no âmbito do ensino
Authors: Souza Patrícia de Mello , Italiano Isabel Cristina
Published: June 2020

Trata-se do Editorial do Dossiê 6.
A linguagem matemática no processo de ensino-aprendizagem de modelagem no curso superior de Tecnologia em Design de Moda: um estudo de caso em uma faculdade de Recife-PE
Authors: Paulino Suzana Ferreira
Published: June 2020

Em Design de Moda, fazer modelagem requer do profissional conhecimentos técnicos sobre medidas, tecidos, tecnologias de confecção e de costura, bem como saber interpretar dados, formas, tendências e cálculos de matemática básica. Por isso, os conceitos matemáticos constituem-se em relevantes aspectos nos processos de modelagens plana e tridimensional.  Este artigo tem por objetivo analisar, interdisciplinarmente, a partir da perspectiva discente, a relação entre o conhecimento de matemática e a modelagem, no processo de ensino-aprendizagem de um curso superior de Design de Moda. Para tanto, realizou-se um estudo de caso, exploratório-comparativo, de natureza quali-quantitativa no Curso Superior de Design de Moda, em uma faculdade privada de Recife-PE. Constatou-se que os discentes possuem uma defasagem em relação aos conhecimentos matemáticos básicos, reconhecem sua dificuldade e veem na interdisciplinaridade uma alternativa para dirimir tal problemática, pois o baixo conhecimento de alunos de Design de Moda sobre matemática interfere negativamente no desenvolvimento adequado de conhecimentos sobre modelagem.
Moda e artesanato na escola Helen Keller de Ribeirão Preto-SP
Authors: Da Silva Vitoria Guessi , Bononi Juliana
Published: June 2020

O projeto “História, Memória e Cegueira: contribuições da Escola para Cegos Helen Keller (1954-1990) de Ribeirão Preto à educação”, aprovado pela FAPESP nº 2017q23240-8, coordenado pela Profa. Dra. Daniela Leal e outros docentes do Centro Universitário Moura Lacerda, recebeu um grande acervo fotográfico, onde algumas imagens são de bazares realizados na década de 60, com produtos de moda e artesanato desenvolvidos pelos alunos da escola. O presente projeto de pesquisa exploratória descritiva e qualitativa, tem o objetivo de descrever os detalhes das fotos recebidas, relatando os trabalhos de moda e artesanato desenvolvidos, por meio de observação assistemática passiva, na intenção de trazer a luz essa parte da história de educação inclusiva de nossa cidade. Esse estudo trouxe a possibilidade de conhecer o universo do deficiente visual, em especial dos alunos da Escola Hellen Keller. Nas imagens foi possível observar vários produtos desenvolvidos e comercializados como; roupas (entre saias, blusa e vestidos), bolsas, panos de prato, aventais, peças em crochê e tricô, bonecos e árvore decorativa para o natal, entre outros. A escola motivava as capacidades manuais na intenção de criar oportunidades, tanto para a busca do mercado de trabalho, quanto para inclusão social, desde a década de 60. O levantamento bibliográfico e toda a pesquisa contribuíram para entender as pessoas com deficiência visual, sua forma de pensar, de agir e se desenvolver, e que o mesmo tem capacidade de aprender e se tornar independente, desde que lhe seja dado oportunidade.