bluuebunny/crossref_metadata_2025 huggingface dataset:
Наглядное представление когомологий торических линейных расслоений
Authors: Altmann Klaus , Ploog David
Published: September 2020

Имеется стандартный подход к вычислению когомологий торически инвариантных пучков $\mathcal{L}$ на торическом многообразии с помощью симплициальных когомологий ассоциированных с ними подмножеств $V(\mathcal{L})$ пространства $N_\mathbb{R}$ всех однопараметрических подгрупп тора. В то же время для когомологий линейного расслоения $\mathcal{L}$, заданного формальной разностью $\Delta^+-\Delta^-$ многогранников из пространства характеров $M_\mathbb{R}$ данного тора, в работе [1] приведена более простая формула, в которой $V(\mathcal{L})$ заменяется на теоретико-множественную разность $\Delta^- \setminus \Delta^+$. Мы даем короткое и прямое доказательство этой формулы.
Библиография: 11 наименований.
Безмассовые (супер)частицы и поля бесконечного спина
Authors: Buchbinder Iosif L'vovich , Isaev Aleksei Petrovich , Fedoruk Sergei Alekseevich
Published: September 2020

Предложена новая твисторная полевая формулировка модели безмассовой частицы бесконечного спина. Найдено твисторное поле бесконечного спина, и получено его разложение по спиральностям. Выведены твисторные уравнения движения для полей бесконечного спина в случаях целых и полуцелых спиральностей. Показано, что поле бесконечного целого спина и поле бесконечного полуцелого спина образуют $\mathcal N=1$ супермультиплет бесконечного спина. Представлены соответствующие преобразования суперсимметрии. Доказано, что соответствующая алгебра суперсимметрии замкнута на массовой поверхности.
Асимптотическая структура гравитации в пространственной бесконечности в четырехмерном пространстве-времени
Authors: Henneaux Marc , Troessaert Cédric
Published: September 2020

Представлен обзор результатов, полученных авторами по асимптотической структуре гравитации на пространственной бесконечности в четырех пространственно-временны́х измерениях. Конечность действия и интегрируемость асимптотических генераторов лоренцева буста являются ключевыми критериями, выполнение которых обеспечивается соответствующими граничными условиями. Эти условия представляют собой "твистованные условия четности" и выражают тот факт, что в ведущем порядке асимптотики при антиподальном отображении сферы поля подчиняются строгим условиям четности с точностью до некоторого несобственного калибровочного преобразования. Показано, что асимптотические симметрии образуют бесконечномерную группу Бонди-Метцнера-Сакса, которая обладает нетривиальным действием. Найдены заряды и их алгебра. Изложение имеет целью самодостаточное представление материала и обладает педагогической составляющей.
Неравновесная двумерная теория Юкавы на фоне сильного скалярного поля
Authors: Akhmedov Emil Tofik ogly , Diatlyk Oleksandr , Semenov Andrei Georgievich
Published: September 2020

Рассмотрена двумерная теория Юкавы на фоне сильного скалярного поля. При этом используются операторный формализм и формализм функционального интеграла. В рамках последнего с помощью диаграммной техники Швингера-Келдыша вычисляются запаздывающий, опережающий и келдышевский пропагаторы. При этом берутся простейшие начальные состояния системы в этих двух формализмах, которые оказываются отличными друг от друга. В результате келдышевские пропагаторы, найденные в разных формализмах, не совпадают друг с другом, тогда как запаздывающий и опережающий оказываются в разных формализмах одинаковыми. С использованием данных пропагаторов вычислены физические величины, такие как поток тензора энергии-импульса фермионов и скалярный ток. Последний необходимо знать для решения задачи об обратной реакции фермионного поля на внешний фон. Оказывается, что в формализме функционального интеграла (для соответствующего простейшего состояния) поток фермионов нулевой, а в операторном формализме (для соответствующего простейшего состояния) поток отличен от нуля и пропорционален производной Шварца. При этом скалярные токи в двух формализмах совпадают, если внешнее поле большое по величине и медленно меняется в пространстве и времени.
Developing Students’ Reflective Thinking Skills in a Metacognitive and Argument-Driven Learning Environment
Authors: Antonio Ronilo Palle
Published: September 2020

This study designed and examined the effects of Metacognitive and Argument-Driven Learning Environment (MADLE) in cultivating students’ reflective thinking skills.  The study involved a group of third-year Biological Science Education students (n=23) in a state university in the Philippines. The study employed a mixed-method approach, where both quantitative and qualitative data were collected and analyzed to answer the research question. Specifically, one-group pretest-posttest design was used under the paradigm of pedagogical action research. The quantitative data were obtained from a 16-item pre- and post-Reflective Thinking Questionnaire while qualitative data were culled from classroom observations and focus group discussions. The Wilcoxon Signed Ranks Test was utilized to determine significant changes in students’ reflective thinking skills. Findings showed an insignificant difference in students’ reflective thinking skills prior to and after their four-week exposure to MADLE. However, the multiple sources of data yielded from students’ higher posttest mean scores in each level of reflective thinking skills, classroom observations, and responses in the focus group discussion imply the efficacy of MADLE in stimulating and supporting students’ reflective thinking skills. Hence, it is recommended to integrate MADLE in improving instructional practices that will engage students in reflective thinking practices.
Editorial
Authors: Espinoza Morales Francisco
Published: September 2020

La Divisio?n de Ciencias Econo?micas y Sociales a trave?s de un equipo so?lido de acade?micos interesados en producir, transferir y difundir conocimientos nuevos o innovados, a trave?s de la Revista de Investigacio?n Acade?mica Sin Frontera (RIASF) tenemos a bien comunicarles que los esfuerzos realizados esta?n dando resultados, ya que nos han indexado Cite Factor Academic Scientific Journal, a Journals Master (IIJIF), a la Red Latinoamericana de Revistas Acade?micas en Ciencias Sociales y Humanidades, (Lati?n Rev) y Neliti que es un repositorio de investigacio?n que ayuda a investigadores y responsables de la toma de decisiones en Indonesia a encontrar investigacio?n, datos y evidencia.

Agradecemos a nuestros colaboradores en el equipo de edicio?n y sobre todo a quienes nos envi?an sus contribuciones de Me?xico, Cuba, Chile y Colombia, ya que con ello se fortalece este esfuerzo editorial, gracias de nuevo colegas investigadores.
The non-stationary bivariate INAR under an unconstrained inter correlation structure
Authors: SUNECHER YUVRAJ , KHAN NAUSHAD MAMODE , JOWAHEER VANDNA
Published: September 2020

It is commonly observed in medical and financial studies that large volume of time series of count data are collected for several variates. The modelling of such time series and the estimation of parameters under such processes are rather challenging since these high dimensional time series are influenced by time-varying covariates that eventually render the data non-stationary. This paper considers the modelling of a bivariate integer-valued autoregressive (BINAR(1)) process where the innovation terms are distributed under non- stationary Poisson moments. Since the full and conditional likelihood approaches are cumbersome in this situation, a Generalized Quasi-likelihood (GQL) approach is proposed to estimate the regression effects while the serial and time-dependent cross correlation effects are handled by method of moments. This new technique is assessed over several simulation experiments and the results demonstrate that GQL yields consistent estimates and is computationally stable since few non-convergent simulations are reported.
Do pensamento benvenistiano à prática de revisão textual: reflexões teóricas pertinentes ao revisor
Authors: Neumann Daiane , Anjos Aroldo Garcia dos , Lemos Mayara Espindola
Published: September 2020

Este trabalho parte do pensamento benvenistiano, considerando sobretudo os estudos de Émile Benveniste acerca do sentido, da significância e dos níveis semiótico e semântico, como conceitos relevantes para o conhecimento do revisor de textos e, consequentemente, para a prática de revisão. Para tanto, iniciamos nosso estudo expondo um pequeno panorama do atual cenário da profissão de revisor. Na sequência, discutiremos algumas reflexões de Benveniste que julgamos relevantes para a proposta deste artigo, trazendo como suporte também pesquisas realizadas com base na obra do linguista, como as de Dessons (2006) e Messa e Teixeira (2015). Por fim, relacionamos os estudos do linguista com a atividade de revisão textual, intencionando contribuir para reflexões que possam enriquecer essa área.
A igreja católica e os sujeitos negros do ciclo do Marabaixo: uma maquinaria discursiva operando práticas conflitantes
Authors: Tartaglia Ednaldo
Published: September 2020

O presente texto trata do funcionamento do dispositivo religioso cristão em práticas conflitantes entre a Igreja Católica e os sujeitos negros do Marabaixo urbano de Macapá. As materialidades sobre as quais nos debruçamos são constituídas por ditos e escritos acerca das práticas dos sujeitos do Marabaixo, entre o século XIX e XXI (textos jornalísticos impressos e televisivos, documentários, livros, blogs etc.). Elegemos como suporte teórico e metodológico a Análise do Discursivo de linha foucaultiana e trabalhamos sob a ótica do dispositivo (FOUCAULT, 1977; DELEUZE, 1990; AGAMBEN, 2005; VEYNE, 2011). A análise sinaliza o funcionamento de uma maquinaria discursiva que, ao mesmo tempo em que construiu, também deslegitimou os sujeitos negros do Marabaixo urbano de Macapá.
Práticas multiletradas potencializadas com uso das tecnologias digitais no contexto do Profletras /Região Centro-Oeste
Authors: Silva Albina Pereira de Pinho , Santos Leandra Ines Seganfredo , Maciel Ruberval Franco
Published: September 2020

Este artigo analisa práticas multiletradas viabilizadas com uso das tecnologias digitais pelos docentes de língua portuguesa (LP), egressos das turmas 1 e 2 de duas unidades de pós-graduação stricto sensu Mestrado Profissional em Letras (PROFLETRAS), situadas na região Centro Oeste do país.  A busca pela melhoria das capacidades de letramentos dos estudantes de escolas brasileiras, na atualidade, traduz um dos desafios aos docentes que ingressam, sobretudo, no PROFLETRAS, dadas as amplas modificações nas práticas comunicativas. A pesquisa referencia-se nos princípios do método qualitativo-interpretativista (BORTONI-RICARDO, 2008). O corpus de análise compõe-se dos recortes de produções multiletradas viabilizadas como requisito do trabalho de conclusão (TC). Os dados da pesquisa apontam para a necessidade de o PROFLETRAS, as escolas e os professores de LP se atentarem para estudos das possibilidades de inserção das tecnologias digitais, com vistas a refletir sobre as concepções de língua/linguagem em tempos contemporâneos, em que outros perfis de leitor/escritor multiletrado caracterizam-se uma das exigências da atual sociedade.
Performance Evaluation of STANDARD F Strep A Ag FIA for Diagnosis of Group A Streptococcal Pharyngitis
Authors: Jo Seon A , Ma Sang Hyuk , Lee Seungjun , Kim Sunjoo
Published: September 2020

Background: Pharyngitis is one of the most common conditions encountered in primary health care facilities. Accurate differentiation of group A streptococcus (GAS) infection from viral infection is difficult. The STANDARD F Strep A Ag FIA (SD BIOSENSOR, Korea) is a rapid antigen detection test (RADT) that has been recently developed for diagnosing GAS pharyngitis. In this study, we evaluated the diagnostic performance of the STANDARD F Strep A Ag FIA and compared the results between the RADT and conventional throat culture. Methods: Throat swab samples were obtained from a total of 372 children presenting pharyngitis symptoms in five pediatric clinics in Changwon, Korea from July 2018 to October 2019. A comparative study between STANDARD F Strep A Ag FIA and Sofia Strep A FIA (Quidel, USA) was performed. Two throat swabs were taken simultaneously from each patient for RADT. The third throat swab was stored in a transport tube containing Stuart’s transport medium for culture. Performance and kappa index of STANDARD F Strep A Ag FIA were evaluated. Results: GAS infection was detected in 29.3% (109/372) patients, using the STANDARD F Strep A Ag FIA. The sensitivity, specificity, positive predictive value, and negative predictive value were 95.0%, 95.2%, 88.1%, and 98.1%, respectively. The STANDARD F Strep A Ag FIA showed an excellent concordance rate of 96.5% and a kappa value of 0.89 compared to Sofia Strep A FIA. Conclusion: The STANDARD F Strep A Ag FIA demonstrated an excellent performance along with Sofia Strep A FIA for the diagnosis of GAS pharyngitis.
Performance of Modified-EUCAST Rapid Direct Antimicrobial Susceptibility Testing on Clinical Urine Samples
Authors: Mugiraneza Justin , Kwon Mijung , Kim Daewon , Lee Sang-Guk , Lee Hyukmin , Yong Dongeun
Published: September 2020

Background: The rapid antimicrobial susceptibility testing (AST) performed on urine samples would guide the adequate choice of antibiotics for obtaining better treatment outcomes in patients. Our study aimed to evaluate the performance of the modified-EUCAST (European Committee on Antimicrobial Susceptibility Testing) rapid direct AST on urine samples. Methods: From >2,000 urine samples, a total of 128 urine samples containing bacterial counts of ≥2 × 104 CFU/mL with a uniform bacterial shape were initially included based on flow cytometry (Sysmex UF-1000i, Japan) and Gram staining, respectively. A total of 103 samples showing the presence of Enterobacteriaceae were finally selected in this study. The urine samples were directly inoculated on Mueller-Hinton agar, which was used in the current EUCAST rapid direct AST on blood samples. The size of the growth inhibition zones around antimicrobial disks was measured using a digital scanner (BIOMIC vision analyzer, Giles scientific, USA) and further confirmed by visualization with naked eyes after incubation for 4, 6, and 8 hours. The AST interpretations were compared to those of the conventional VITEK 2 AST system (bioMérieux, France) and the discrepancies between both tests were confirmed with the E-test. Results: The antibiotics, namely ampicillin, cefazolin, aztreonam, ceftazidime, cefotaxime, cefoxitin, cefepime, gentamicin, ciprofloxacin, and cotrimoxazole showed excellent correlations with modified-EUCAST rapid direct test and conventional ASTs with >0.75 weighted kappa values. The categorical agreement of the rapid direct AST was 1,442 (93.3%), with 76 (4.9%) minor error, 9 (0.6%) major error and 18 (1.2%) very major error, implicating the reliability of this method for clinical application. Conclusion: Performing the modified-EUCAST rapid direct AST on urine samples can predict reliable AST results within 8 hours. The rapid direct AST can help the physicians to initiate adequate antimicrobial treatment for urinary tract infections.
2010–2015 North American methane emissions, sectoral contributions, and trends: a high-resolution inversion of GOSAT satellite observations of atmospheric methane
Authors: Maasakkers Joannes D. , Jacob Daniel J. , Sulprizio Melissa P. , Scarpelli Tia R. , Nesser Hannah , Sheng Jianxiong , Zhang Yuzhong , Lu Xiao , Bloom A. Anthony , Bowman Kevin W. , Worden John R. , Parker Robert J.
Published: September 2020

Abstract. We use 2010–2015 GOSAT satellite observations of atmospheric methane columns over North America in a high- resolution inversion of methane emissions, including contributions from different sectors and long-term trends. The inversion involves analytical solution to the Bayesian optimization problem for a Gaussian mixture model (GMM) of the emission field with up to 0.5° × 0.625° resolution in concentrated source regions. Analytical solution provides a closed-form characterization of the information content from the inversion and facilitates the construction of a large ensemble of solutions exploring the effect of different uncertainties and assumptions. Prior estimates for the inversion include a gridded version of the EPA Inventory of U.S. Greenhouse Gas Emissions and Sinks (GHGI) and the WetCHARTS model ensemble for wetlands. Our best estimate for mean 2010–2015 US anthropogenic emissions is 30.6 (range: 29.4–31.3) Tg a-1, slightly higher than the gridded EPA inventory (28.7 (26.4–36.2) Tg a-1). The main discrepancy is for the oil and gas production sectors where we find higher emissions than the GHGI by 35 % and 22 % respectively. The most recent version of the EPA GHGI revises downward its estimate of emissions from oil production and we find that these are a factor 2 lower than our estimate. Our best estimate of US wetland emissions is 10.2 (5.6–11.1) Tg a-1, on the low end of the prior WetCHARTS inventory uncertainty range (14.2 (3.3–32.4) Tg a-1) and calling for better understanding of these emissions. We find an increasing trend in US anthropogenic emissions over 2010–2015 of 0.4 % a-1, lower than previous GOSAT-based estimates but opposite to the decrease reported by the EPA GHGI. Most of this increase appears driven by unconventional oil/gas production in the eastern US. We also find that oil/gas production emissions in Mexico are higher than in the nationally reported inventory, though there is evidence for a 2010–2015 decrease in emissions from offshore oil production.
In situ micro-FTIR spectroscopic investigations of synthetic ammonium phengite under pressure and temperature
Authors: Abdel-Hak Nada , Wunder Bernd , Efthimiopoulos Ilias , Koch-Müller Monika
Published: September 2020

Abstract. Phengite is known to be an important mineral in the
transport of alkalis and water to upper mantle depths. Since ammonium
(NH4+) can substitute for K+ in
K-bearing minerals, phengite is thus a potential host to transport nitrogen
into the mantle. However, the temperature and pressure conditions at which
devolatilisation of NH4-bearing phengite occurs are
not well constrained. In this study, NH4-phengite
(NH4)(Mg0.5Al1.5)(Al0.5Si3.5)O10(OH)2 was
synthesised in piston-cylinder experiments at 700 ∘C and 4.0 GPa.
Its devolatilisation behaviour was studied by means of in situ micro-FTIR (Fourier transform infrared)
spectroscopy under low and high temperatures from −180 up to
600 ∘C at ambient pressure using a Linkam cooling–heating stage and pressures up to 42 GPa at ambient temperature in diamond anvil cell (DAC) experiments. In
addition to these short-term in situ experiments, we performed quenched experiments
where the samples were annealed for 24 h at certain temperatures and
analysed at room conditions by micro-FTIR spectroscopy. Our results can be summarised as follows: (1) an order–disorder process of
the NH4+ molecule takes place with
temperature variation at ambient pressure; (2) NH4+ is still retained in the phengite
structure up to 600 ∘C, and the expansion of the
NH4+ molecule with heating
is reversible for short-term experiments; (3) kinetic effects partly control
the destabilisation of NH4+ in
phengite; (4) ammonium loss occurs at temperatures near dehydration; (5) NH4+ in phengite is apparently
distorted above 8.6 GPa at ambient temperature; and (6) the local symmetry of the NH4+ molecule is
lowered/descended/reduced by increasing pressure (P) or decreasing temperature (T), and the type and
mechanism of this lowered symmetry is different in both cases. The current
study confirms the wide stability range of phengite and its volatiles and thus has important implications for the recycling of nitrogen and hydrogen
into the deep Earth. Moreover, it is considered as a first step in the
crystallographic determination of the orientation of the
NH4+ molecule in the phengite
structure.
Reconstructing coupled time series in climate systems using three kinds of machine-learning methods
Authors: Huang Yu , Yang Lichao , Fu Zuntao
Published: September 2020

Abstract. Despite the great success of machine learning, its application in climate
dynamics has not been well developed. One concern might be how well the
trained neural networks could learn a dynamical system and what will be the
potential application of this kind of learning. In this paper, three machine-learning methods are used: reservoir computer (RC), backpropagation-based (BP)
artificial neural network, and long short-term memory (LSTM) neural network. It shows that the coupling relations or dynamics among variables in
linear or nonlinear systems can be inferred by RC and LSTM, which can be
further applied to reconstruct one time series from the other. Specifically,
we analyzed the climatic toy models to address two questions: (i) what
factors significantly influence machine-learning reconstruction and (ii)
how do we select suitable explanatory variables for machine-learning
reconstruction. The results reveal that both linear and nonlinear coupling
relations between variables do influence the reconstruction quality of
machine learning. If there is a strong linear coupling between two
variables, then the reconstruction can be bidirectional, and both of these
two variables can be an explanatory variable for reconstructing the other.
When the linear coupling among variables is absent but with the significant
nonlinear coupling, the machine-learning reconstruction between two
variables is direction dependent, and it may be only unidirectional. Then
the convergent cross mapping (CCM) causality index is proposed to determine
which variable can be taken as the reconstructed one and which as the
explanatory variable. In a real-world example, the Pearson correlation
between the average tropical surface air temperature (TSAT) and the average
Northern Hemisphere SAT (NHSAT) is weak (0.08), but the CCM index of NHSAT
cross mapped with TSAT is large (0.70). And this indicates that TSAT can be well
reconstructed from NHSAT through machine learning. All results shown in this study could provide insights into machine-learning
approaches for paleoclimate reconstruction, parameterization scheme, and
prediction in related climate research.Highlights: i The coupling dynamics learned by machine learning can be used to reconstruct
time series. ii Reconstruction quality is direction dependent and variable dependent for nonlinear
systems. iii The CCM index is a potential indicator to choose reconstructed and
explanatory variables. iv The tropical average SAT can be well reconstructed from the average Northern
Hemisphere SAT.
An analysis of instabilities and limit cycles in glacier-dammed reservoirs
Authors: Schoof Christian
Published: September 2020

Abstract. Glacier lake outburst floods are common glacial hazards around the world. How big such floods can become (either in terms of peak discharge or in terms of total volume released) depends on how they are initiated: what causes the runaway enlargement of a subglacial or other conduit to start the flood, and how big can the lake get before that point is reached? Here we investigate how the spontaneous channelization of a linked-cavity drainage system can control the onset of floods. In agreement with previous work, we show that floods only occur in a band of water throughput rates in which steady reservoir drainage is unstable, and we identify stabilizing mechanisms that allow steady drainage of an ice-dammed reservoir. We also show how stable limit cycle solutions emerge from the instability and identify parameter regimes in which the resulting floods cause flotation of the ice dam. These floods are likely to be initiated by flotation rather than the unstable enlargement of a distributed drainage system.
La técnica de la biblioterapia
Authors: González Rodríguez Pedronel
Published: September 2020

La biblioterapia es más que leer un libro. Por eso, en el presente artículo se describen cada una de las etapas para implementar esta técnica, la cual forma parte de las herramientas del enfoque cognitivo conductual. Se presenta un caso donde se emplea la técnica de la biblioterapia realizado por una paciente que acudió a la clínica de Salud Mental y Familiar. La técnica de la biblioterapia permitió que la paciente identificara sus pensamientos y sentimientos, permitiéndole establecer planes de acción que le ayudaron en su proceso terapéutico con enfoque cognitivo conductual. Lo esencial del proceso biblioterapéutico, está basado en las respuestas a las preguntas: ¿Qué pienso? ¿Qué siento? ¿Qué haré? ¿Cómo lo haré? ¿Cuándo lo haré?
Challenges for Expatriate Faculties to Teach International Business course in Ethiopian Universities (Case of Dilla University)
Authors: Jagadeesha M , Durga Rao P Venkata , Polisetty Aruna
Published: September 2020

Purpose: This paper endeavour is to address, the challenges faced by expatriate faculties while teaching International Business subject and case studies in classroom. Students lackingness with relevance to International Business subject; and paramountcy of a manager's role in achieving organizational goals in globalization era.Design/Methodology/Approach: This research adopts the empirical study method to analyse the essentialness of international Business subject at Undergraduate and Graduate level in Ethiopian universities.  Personal interview method adopted to analyse the primary evidence through questioner. Handbook of theory and research for Higher education is considered for review of literature; discussion and analysis which fixates on affinity for learning practical business skills rather theoretical. Vigour, Impotency, Opportunity, and Threats analysis explores all challenges and hurdles in teaching International Business subject.Findings: The study finds the consequentiality of the international business subject at both UG & PG level and fluency in English language at university level. Less fluency in English influence the cognition system across the geography, it links the course curriculum design predicated the industry trend and authoritatively mandate; Adscititiously, the study concludes the integration of curriculum and research at university level concerning the context of International Business. Lack of vigilance about course theoretical paramountcy with respect to integration of countries trade.Research Limitations/Implications: Underutilization of resources, fail to update each program's importance, opportunities, and outcomes in university websites. Most of the MBA students are either commerce or social science rather diverse background like science, pharma, and engineering. University-Industry Linkage department is not prioritizing to organize focus group discussions among a diverse group of employers and students to determine the primary skills and consequential attributes look for in students.Originality/Value: Ministry of Higher Education and universities are not giving much importance to the International Business subject, albeit the country’s exports and imports. Only two or three (Addis-Ababa, Mekelle, and Adama) Ethiopian Universities are active in research in higher education because of the collaborative influence of foreign university faculties.
Musical Ethics and Islam
Authors: Senay Banu
Published: September 2020

At the heart of this study is a musical practice that occupies a significant place in the contemporary public soundscape of Turkey: the art of playing the ney. Intimately connected with Sufism in both the Ottoman Empire and, for better or worse, in modern secular Turkey, the ney has been a popular instrument throughout the Middle East and North Africa. After enduring a checkered social life during the Turkish Republic’s modernizing reforms, today in a more Islam-friendly socio-political environment the ney is flourishing. Based on extensive field research in Istanbul and an apprentice-style method of inquiry, the book documents the lifetime of preparation required to become an expert player of the ney (neyzen). It examines in particular the transformative power of this Islamic art pedagogy to cultivate new artistic and ethical perceptions in learners. Crafting oneself as a neyzen transcends ‘mere’ musical technique in profound ways, as it also involves developing a certain way of living. Exploring firsthand the practical process of musical teaching and learning, together with their ethical scaffolding, the book has theoretical implications for scholars studying many other forms of apprentice-style learning. It also helps redress the underdeveloped understandings and often-polemical claims made in both the media and by Islamophobic discourse concerning processes by which Muslims develop a religious and moral sense.
MEEGA+: Um Modelo para a Avaliação de Jogos Educacionais para o ensino de Computação
Authors: Petri Giani , Von Wangenheim Christiane Gresse , Borgatto Adriano Ferreti
Published: September 2020

Jogos educacionais estão sendo usados como uma estratégia instrucional inovadora para o ensino e aprendizagem em diversas áreas de conhecimento. No entanto, é essencial avaliar sistematicamente esses jogos a fim de obter evidências de suas contribuições. Atualmente, existem poucos modelos/métodos que forneçam um suporte sistemático para a avaliação de jogos educacionais. Neste contexto, um modelo que têm se destacado é o MEEGA (Model for the Evaluation of Educational GAmes). Porém, resultados de uma análise de sua versão inicial apontam limitações em termos de sua validade. Assim, o objetivo deste artigo é apresentar o modelo MEEGA+, evoluindo a versão inicial do modelo MEEGA. O modelo MEEGA+ é sistematicamente desenvolvido por meio da decomposição de um objetivo de avaliação em medidas e definindo um instrumento de medição para avaliar a qualidade de jogos educacionais. A análise da confiabilidade e validade, com base em dados coletados em 48 estudos de caso envolvendo uma população de 843 alunos, avaliando 18 diferentes jogos para o ensino de computação, indica que o instrumento de medição do modelo MEEGA+ é confiável (alfa de Cronbach α=,928). Os resultados de uma análise fatorial exploratória indicam que a qualidade de jogos educacionais é avaliada por meio de dois fatores de qualidade (experiência do jogador e usabilidade). Os resultados também demonstram validade convergente por meio de um grau de correlação satisfatório encontrado entre a maioria dos itens do instrumento de medição. Assim, o modelo MEEGA+ fornece um instrumento de medição confiável e válido para desenvolvedores de jogos, instrutores e pesquisadores, a fim de avaliar a qualidade de jogos educacionais como base para sua melhoria e adoção na prática.
SPECTROPHOTOMETRIC DETERMINATION OF ASCORBIC ACID BY HORSERADISH PEROXIDASE
Authors: Đurić Vladan R. , Deletić Nebojša R.
Published: September 2020

L-ascorbic acid is one of the essential nutrients and most common food supplements, fortificants, and preservatives. It is commercially available as solutions, drops, tablets, capsules, crystal powder, beverage mixtures, multivitamin formulations, and multi antioxidant formulations. The usual daily dose is from 25 mg to 1.5 g. Ascorbic acid is a distinctly reducing agent with low redox potential (0.18 and 0.08 V at pH 4.5 and 6.4, respectively). Based on ascorbate property, numerous methods for its quantitative determination are developed, from titrimetric, electrochemical, and chromatographic methods, to fluorometric and kinetic ones. Enzyme peroxidase is interfered with by ascorbic acid, which decreases the oxidation speed of its co-substrates during hydrogen peroxide decomposition by peroxidase. Absorbance changes at the wavelength of corresponding reagents are in correlation with ascorbate concentration. During this study, benzidine and o-tolidine have been used as chromogenic reagents. Reaction conditions were optimized for various buffer systems, calibration curves were constructed, and limits of detection (0.04 μmol/L) and quantification (0.12 μmol/L) were calculated. Using calibration charts, it was possible to detect ascorbic acid within limits from 0.4 to 10 μmol/L. The optimized method was applied for the determination of ascorbic acid in pharmaceutical products. The method was characterized by exceptional sensitivity and accuracy, but only for preparations not containing substances that affect enzyme peroxidase.
Prøve på en amerikansk Grundtvig-udgave
Authors: Høirup Henning
Published: September 2020

Attempt on an American Grundtvig editionBy Henning Høirup
Hilmer Wentz: Grundtvig-psalmer i vår svenska psalmbok
Authors: Høirup Henning
Published: September 2020

Hilmer Wentz: Grundtvigian hymns in our swedish hymnalBy Henning Høirup
Omkring Grundtvigs historieskrivning - status og fremtidsperspektiver
Authors: Aarnes Sigurd Aa.
Published: September 2020

Grundtvig3s Historical Writings - Status and Perspectives By Sigurd Aa. Aarnes. For long periods of his life Grundtvig was occupied with the research and representation af history. If as a historian he has, nevertheless, been almost forgotten, it is because his type and aim make him cut across the main trend of nineteenth century positivistic research and historical criticism. Grundtvig was not a historian in the modern professional sense of the word but a narrator and philosopher. He does not aim at establishing historical facts, “wie es eigentlich gewesen” (Leopold von Ranke). He is more concerned with the question how to make history serve the cause of national and religious revival for which he is fighting. As a result of this Grundtvig’s historical writings are of minor interest as such (i.e. as historical writings). We study them today because they are sources of the history of ideas, interesting not by the world history they impart but by what they imply about Grundtvig himself and his age. In the last part of the article the author mentions some objects of research within the field in question. Grundtvig” s chief work of history, the monumental Haandbog i Verdens-Historien (1833-44), has not yet been sufficiently examined. Nor has special attention been paid to the influence of Grundtvig’s historical works on contemporary writers and on the teaching of history in the Folk Highschool. For any study of Grundtvig as a critic of the age his historical writings are of the first importance.
Forord
Authors: Høirup Henning
Published: September 2020

Preface by Henning Høirup
Grundtvig og Jylland. Foredrag ved Grundtvig-Selskabets årsmøde 1967
Authors: Albeck Gustav
Published: September 2020

Grundtvig and Jutland By Gustav Albeck.The treatise contains a survey of Grundtvig’s Jutland poetry, beginning with such poems as “Anholts-Toget”, “Morten Borup”, and “Udby Have”, all of them from 181 1 , and paying attention in particular to the great poem “Et Blad af Jyllands Rimkrønike”, which is characterized as a stage in the development of the poet as he moves from “Roskilde Riim” to “Nyaars-Morgen”.Grundtvig’s Jutland poems constitute an “enclave” within the poetry of his youth; but, as pointed out by the author, the national fight in North Slesvig from 1844 onwards was to give rise to more poetry with a Jutlandish theme and clear manifestations that he had not forgotten his earlier high valuation of Jutland and the Jutlanders. The familiarity which he acquired with the nature, language, and population of Jutland has left an indelible impression upon his personality and his work.
Beretning om Grundtvig-Selskabets virksomhed 1969- 70
Authors: Høirup Henning
Published: September 2020

Report on the Grundtvig Society's company 1969-70By Henning Høirup
Et forslag til en grundtvigsk lærd skole 1832
Authors: Heilesen Henning
Published: September 2020

Plan for a Grundtvigian Grammar School 1832By Henning HeilesenThis paper brings to light a number of previously unknown documents giving a clear picture of the resistance with which the University of Copenhagen met an application from two of Grundtvig’s young friends, J. F. Fenger and C. H. Muus, for permission to establish a school preparing its pupils for University entrance along the lines laid down by Grundtvig: Greek language and literature, rather than Latin, was to provide the basis, a living language was to be preferred to a dead one, the study of the mother tongue and history was to receive the bulk of attention, and the instruction in religion was to be based on Biblical history. C. H. Muus had taught Grundtvig’s children at home alone these lines, using as texts for instance Grundtvig’s Krønike-Riim (1829) and Historisk Børne-Lærdom with the key-map “ Tidens Strøm” , which appeared at approximately the same time. What especially displeased the professors who were to approve the plan was the idea of beginning the instruction in Greek with the Gospel according to St. John and of including Modern Greek alongside of Old Greek. The Senate also missed mathematics in the curriculum and regretted that the possibility of pupils returning to the traditional school in case their parents might wish so had not been provided for. - The plan proved harmful to both Fenger and Muus in their later careers and influenced Grundtvig’s article “Den latinske Stil” (1834). Peder Hjorth, the contemporary critic, characterised it as a “mixture of chauvinism and Romanophobia” . Grundtvig instead concentrated his endeavours on the plan for a folk high school.
Holger Kjær: Højskolens Grund
Authors: Michelsen William
Published: September 2020

Holger Kjær: Ground of the Folk SchoolReviewed by William Michelsen
Grundtvig, an Introduction
Authors: Thaning Kaj
Published: September 2020

Grundtvig, en introduktionAf Kaj Thaning
The Grundtvigian »Folkelighed« and Leopold Senghor’s »Négritude«
Authors: Simon Erica
Published: September 2020

Grundtvigsk »Folkelighed« og Leopold Senghors »Négritude«Af Erica Simon
Årsberetning
Authors: Michelsen William
Published: September 2020

Report on the Grundtvig Society's company 1974By William Michelsen
Deltheden hos Grundtvig efter 1832
Authors: Elbek Jørgen
Published: September 2020

The Divided Mind of Grundtvig after 1832By Jørgen ElbekThis article is a concluding supplement to the little book, Grundtvig’s Eighteen Years of Apprenticeship, that is the years 1805-24, and is also concerned with an essay on the subsequent seven »lean« years, 1825-32. It was published in the periodical Kritik No. 31. According to Elbek, the rest of Grundtvig’s works are characterized by his recognition that he is of a mixed nature, which reveals itself in six main areas of his authorship:1. Grundtvig regards himself as a skald (»an ancient Scandinavian poet« - O.E.D.), standing by the hero’s side and dreaming of the glory the hero seeks to gain through his feats. Reference is made to the poem Til Kristne Venner (To Christian Friends) 1833, and to the poems written in memory of Poul Dons, Thorvaldsen and Kamma Rahbek (1843-45).2. Grundtvig regards himself as the historian of the people in his Universal History (Handbook of World History I-III, 1833-43), based on Joseph’s words to his brothers - »And as for you, you meant evil against me; but God meant it for good«. Genesis 50,20.3. Grundtvig works towards an education of young people that distinguishes between the knowledge which kills (like lightning) and that which is life-giving (like the sun). The aim of the High School teaching is not to convey all that we know, but only so much of it as can be common property to the benefit and pleasure of all. A social bond must be established between people who share the same language, not for example the same sort of work.4. It is a principal point o f Nordens Mytologi (Scandinavian Mythology) that people o f different faiths can work together if they just have the same spirit. And the spirit that pervades Scandinavia reveals itself in the old myths and always expresses itself as a battle tor immortality. This is what Grundtvig maintains, even though as a Christian he knows that immortality cannot be achieved by fighting. He can work together with »naturalists«.5. The Church is transformed from being the historical institution o f the Lord to being the place where He rises in the word here and now when the congregation are gathered.6. In the poems to his second wife Grundtvig sees himself as tne spirit and his wife as the heart. On the other hand, he asks her to take him totally, just as he takes her as she is. During his mental breakdowns in 1844 and 1867 he recognized that there was still much of the heathen in him.These main points are the result of a term’s courses at Aarhus Univ. on Grundtvig’s educational writings. They should be read as an answer to the review o f Elbek’s book in Grundtvig Studies 1974 p. 85-86.
Was könnte Grundtvig heutzutage für reformierte Christen bedeuten?
Authors: Herngreen G. F. W.
Published: September 2020

What might Grundtvig mean today to Reformed ChristiansfBy G. F. W. HerngreenThe author, a former vicar in the Hague, asks this question on the basis of his knowledge of both Grundtvig’s writings and of the Grundtvigian church life in Denmark. Two of Grundtvig’s hymns have recently been included in the Dutch Hymn Book (Liedboek) and in this connection Grundtvig’s theology has for the first time received close consideration. In this article the author discusses in depth his view of the relationship between the Calvinist and the Grundtvigian interpretation of the Eucharist, particularly with regard to Karl Barth’s theology, and finds a greater agreement than even Grundtvig himself was aware of. The Reformed teaching on the Eucharist offers a greater opportunity to understand Grundtvig’s deepest concern: where do we hear God’s word to us personally? Grundtvig’s reference to the congregation’s ‘loud yes and amen’ in the creed during baptism is in consonance with Calvin’s main concern that man has no control over God’s word, not even at the Eucharist.It is God, the free agent, who acts through His word at both sacraments - not man. The creed is not a number of dogmas, a different holy writ from the Bible, but an oral narrative about who God is. This interpretation may lead to a cult-fellowship with its back to the world, which is at variance with the Reformed view that the true service takes place in the everyday life of the world, but it is for this very reason of great importance for the ecumenical debate whether one can also explain to the Reformed churches the basic idea behind Grundtvig’s ‘First a man, then a Christian’.
»Rød og hvid i Billedsalen.« Grundtvigs døds- og mindedigte I
Authors: Nielsen-Lundgreen Flemming
Published: September 2020

“Red and White in the Picture Gallery” Grundtvig’s memorial poems (I)By Flemming Lundgreen-NielsenThe author sets out to examine six of Gr.’s memorial poems viewed as a particular literary genre within Gr.’s writings. The first part of the essay treats three poems. “My Mother” (1822) demonstrates how Gr. is able to turn his private grief for his mother’s death into hope for a future renewal of Danish history, poetry and Christianity, not least through Gr.’s own promised efforts. Poetically the poem relies principally on spiritual interpretations and ambiguous considerations of different details around his mother’s death and burial. “The Birthday (at Gisselfeld, June 11.)” (1823) commemorates Gr.’s supposed patron of literature, Count C.C.S. Danneskiold-Samsøe. The poem is shown to be effective in attaching the manor and park to elements of old Norse mythology, but it is pointed out that in the end the poem fails to bring solace to the widow and her daughters and hardly even convinces the poet himself, the reason being Gr.’s refusal to acknowledge the death of Danneskiold. Finally in “Jens Baggesen” (1826) Grundtvig as an honest enemy praises and critically characterizes his old opponent and ally, Jens Baggesen. Baggesen’s unfortunate attraction to German language and literature is in Gr.’s opinion more than counterbalanced by his essentially Danish childlike tone, cunning and innocent at the same time, and can be conceived of as evidence of a spiritual attitude to life that may secure Baggesen a revival and a part in the future national life in Scandinavia.The second part of the paper will be published in the 1981 volume.
N. F. S. Grundtvigs Dag- og Udtogsbøger I-II, udgivet af Gustav Albeck
Authors: Thodberg Christian
Published: September 2020

N.F.S. Grundtvig’s diaries and summary books I - IIEdited by Gustav AlbeckReviewed by Christian ThodbergThe most important Grundtvig publication in 1979 was Professor Gustav Albeck’s edition of Grundtvig’s diaries and summary books. The edition consists partly of texts, partly of detailed comments on names, quotations and contemporary historical events. Grundtvig never wrote a diary as such. His diaries are a mixture of personal impressions and the books he was reading. The diary of 1802-3 is only partly preserved. In 1804 Grundtvig rewrote his 1802-diary with a view to publication. This is one of the earliest examples of his many retrospective surveys of his life, seen from the particular stage he had reached.These retrospective surveys have often paralysed Grundtvig-research, so that it was hard to see what was actually happening. Professor Albeck’s commentaries now prevent any such misunderstandings. The diaries give a first-hand impression of Grundtvig’s literary reading and his interest in linguistic and educational matters. The edition covers the scattered entries from in particular the first decade of the 19th century. For the rest of Grundtvig’s life the personal records are few and far between.Professor Albeck’s exemplary presentation of the material is an invaluable introduction to the authorship of the young Grundtvig. The meticulous commentaries will benefit not least non-Danish readers, since all the necessary contemporary historical information is provided.
Historießlosoß og antropologi. - Poul Behrendt: Viljens former
Authors: Bjerring-Hansen Mogens
Published: September 2020

Historical philosophy and anthropology: on Poul Behrendt’s “Types o f Will” - Augustine - Goethe - GrundtvigReviewed by Mogens Bj erring-HansenPoul Behrendt’s book is of a philosophical and psychological nature, and belongs within the neo-humanist and existential tradition in Danish criticism. It consists of theoretical essays (on existential historical philosophy) and analyses of Augustine’s Confessions, Goethe’s study of botany and Grundtvig’s Nyaars-Morgen (New Year’s Morning) with regard both to their literary quality and to their position in the history of ideas. The starting-point of the book and its main attack is on the divided, super-intellectual, and ahistorical “type of consciousness” in our time, but on the basis of the author’s own anthropological study of historical philosophy a review is undertaken of the major stages in European history of “types of consciousness”. With Augustine comes a liberation from mythical thought, and at the same time the germ of modern individualism and intellectualism is formed. In Goethe and Grundtvig, however, a type of consciousness is reached that goes beyond Augustine, one which is characterised by unity and fullness. In the case of Grundtvig it is, according to Behrendt, his own personal memory and his “historical method” that provide him with the solution: self-realisation and a close connection with one’s surroundings. This reveals itself in Nyaars-Morgen.