bluuebunny/crossref_metadata_2025 huggingface dataset:
Four-hundred Very Metal-poor Stars Studied with LAMOST and Subaru. I. Survey Design, Follow-up Program, and Binary Frequency
Authors: Aoki Wako , Li Haining , Matsuno Tadafumi , Xing Qianfan , Chen Yuqin , Christlieb Norbert , Honda Satoshi , Ishigaki Miho N. , Shi Jianrong , Suda Takuma , Tominaga Nozomu , Yan Hong-Liang , Zhao Jingkun , Zhao Gang
Published: June 2022

The chemical abundances of very metal-poor stars provide important constraints on the nucleosynthesis of the first generation of stars and early chemical evolution of the Galaxy. We have obtained high-resolution spectra with the Subaru Telescope for candidates of very metal-poor stars selected with a large survey of Galactic stars carried out with LAMOST. In this series of papers, we report on the elemental abundances of about 400 very metal-poor stars and discuss the kinematics of the sample obtained by combining the radial velocities measured in this study and recent astrometry obtained with Gaia. This paper provides an overview of our survey and follow-up program, and reports radial velocities for the whole sample. We identify seven double-lined spectroscopic binaries from our high-resolution spectra, for which radial velocities of the components are reported. We discuss the frequency of such relatively short-period binaries at very low metallicity.
Probing X-Ray Continua with Accretion-Disk Wind in Black Hole X-Ray Binaries
Authors: Jones Cory , Fukumura Keigo
Published: June 2022

High energy coronal radiation in Black Hole X-Ray Binary sources is often absorbed by accretion disk winds and the resulting absorption signatures heavily depend on its ionizing spectral energy distribution (SED). Considering multiple ion absorbers in the wind (e.g. Fe xxv/xxvi, S xvi, Si xiv, Ca xx and Mg xii), we find that the relative strength of absorption among these ions in general sensitively depends on the shape of the SED. We calculate a series of absorption line spectra from radiative transfer process for 9 distinct SED. Furthermore, we simulate 50 ks XRISM/Resolve spectra for each SED. We then fit the spectra by two-parameter wind model (SED and wind density normalization) to examine whether or not absorption features imprinted by the wind can be uniquely mapped to the ionizing SED.
The Outer Edge of the Venus Zone around Main-sequence Stars
Authors: Vidaurri Monica R. , Bastelberger Sandra T. , Wolf Eric T. , Domagal-Goldman Shawn , Kumar Kopparapu Ravi
Published: June 2022

A key item of interest for planetary scientists and astronomers is the habitable zone: the distance from a host star where a terrestrial planet can maintain necessary temperatures in order to retain liquid water on its surface. However, when observing a system’s habitable zone, it is possible that one may instead observe a Venus-like planet. We define “Venus-like” as greenhouse-gas-dominated atmosphere occurring when incoming solar radiation exceeds infrared radiation emitted from the planet at the top of the atmosphere, resulting in a runaway greenhouse. Our definition of Venus-like includes both incipient and post-runaway greenhouse states. Both the possibility of observing a Venus-like world and the possibility that Venus could represent an end state of evolution for habitable worlds require an improved understanding of the Venus-like planet, specifically the distances where these planets can exist. Understanding this helps us define a “Venus zone”—the region in which Venus-like planets could exist—and assess the overlap with the aforementioned “habitable zone.” In this study, we use a 1D radiative−convective climate model to determine the outer edge of the Venus zone for F0V, G2V, K5V, and M3V and M5V stellar spectral types. Our results show that the outer edge of the Venus zone resides at 3.01, 1.36, 0.68, 0.23, and 0.1 au, respectively. These correspond to incident stellar fluxes of 0.8, 0.55, 0.38, 0.32, and 0.3 S
⊙, respectively, where stellar flux is relative to Earth (1.0). These results indicate that there may be considerable overlap between the habitable zone and the Venus zone.
First record of Lepidodactylus lugubris (Duméril & Bibron, 1836) (Squamata, Gekkonidae) from Hainan Island, China
Authors: Wang Hao-Tian , Qi Shuo , Qiu Xian-Chun , Li Pi-Peng
Published: June 2022

Lepidodactylus lugubris is known from tropical Asia, Oceania, and Latin America, but in China it was previously known only from Taiwan Island. In this paper, we report a new herpetofaunal record based on one specimen collected from Wanning, Hainan, China, which conforms to L. lugubris on both morphological and molecular data. Our finding brings the total species of the family Gekkonidae in Hainan to six.
Life cycle and description of the immature stages of a terrestrial firefly endemic to Mexico: Photinus extensus Gorham (Coleoptera, Lampyridae)
Authors: Zurita-García Martín L. , Domínguez-León Daniel Edwin , Vega-Badillo Viridiana , González-Ramírez Mireya , Gutiérrez-Carranza Ishwari Giovanni , Rodríguez-Mirón Geovanni M. , López-Pérez Sara , Cifuentes-Ruiz Paulina , Aquino-Romero Miriam , Zaragoza-Caballero Santiago
Published: June 2022

The life cycle, morphology, and bionomy of Photinus extensus Gorham, 1881, an endemic species of Mexico, are described. Redescriptions of adults (male and female) are also presented. Larvae were reared to the adult stage from eggs laid by females collected at the El Pedregal de San Ángel Ecological Reserve, south of Mexico City. The activity period of adults of P. extensus begins at the end of July and finishes by the end of August. Females lay between 3 and 198 eggs. Larvae hatch from the eggs after a period of 11 to 71 days, undergo 6 larval instars and a pupal stage in an annual cycle. Morphological characters of the sixth larval instar of P. extensus are compared with those of several other genera assigned to the tribe Photinini. Knowledge of the natural history of firefly larvae is relevant since most species do not feed as adults and therefore depend on resources acquired during the larval stage.
Maurice Baquet : l’homme derrière le mythe
Authors: Gomet Doriane , Bauer Thomas
Published: June 2022

Si Maurice Baquet (1897-1965) est aujourd’hui une figure reconnue de l’éducation physique française, sa trajectoire est en revanche méconnue sur bien des points. Cet article a pour ambition de décrypter les péripéties de sa carrière et les fondements mêmes du mythe dont il semble avoir fait l’objet. Pour ce faire, de nombreuses sources ont été réunies, provenant à la fois des Archives Nationales de Fontainebleau et de Roubaix, des Archives Départementales ou encore de l’INSEP, sans compter les ouvrages et articles publiés par l’auteur. À partir de ces différentes données, on constate que la trajectoire de Maurice Baquet résulte d’une succession d’engagements forts qui, bien que dispersés en apparence, trouvent leur cohérence dans une double quête : d’une part, le besoin de rompre avec ses origines modestes pour s’élever socialement et, d’autre part, la volonté de rendre le sport – qu’il perçoit comme un puissant outil d’émancipation et d’éducation – accessible au plus grand nombre.
The effect of Socio-Scientific Issues (SSI) in teaching science: A meta-analysis study
Authors: Badeo Jeah May , Duque Domarth Ace
Published: June 2022

This study aims to summarize the research findings on using socio-scientific issues (SSI) in teaching Science. In recent years, teaching based on socio-scientific issues (SSI) is utilized in science education to promote scientific literacy. A meta-analysis is conducted by calculating the effect size of the 12 studies associated with the SSI implementation in teaching Science published in different regions. The overall effect size was large (1.08), and found that SSI affects teaching science. The effect sizes determined by the categorical variables such as scientific literacy aspects showed that SSI had a large effect on content learning (1.15), competence (0.89), decision-making (1.14), and reasoning (0.81); and year level showed that SSI had a large effect on junior high school (1.43) and senior high school (0.96) while medium effect on college (0.55). Lastly, a significant effect was shown on the moderating effect, such as the class size (p = 0.035), while no significant effect was shown on the duration of implementation (p = 0.487). Considering the effect of SSI in teaching Science, this study could help teachers and educational researchers in science and technology education.
Implementation of online problem-based learning assisted by digital book with 3D animations to improve student's physics problem-solving skills in magnetic field subject
Authors: Prahani Binar Kurnia , Rizki Iqbal Ainur , Nisa' Khoirun , Citra Nina Fajriyah , Alhusni Hanan Zaki , Wibowo Firmanul Catur
Published: June 2022

The magnetic field is a more complex and abstract physics subject than other physics subjects, causing students' low ability to solve problems. So there is a need for learning instruments to overcome these problems, especially when online learning during the COVID-19 pandemic. Research creates and implements an online problem-based learning (OPBL) assisted by digital books with 3D animation to improve students' physics problem-solving skills on magnetic field subjects. Research aimed to analyze the validity, effectiveness, and student responses to the learning instruments used. The method used in this research is quantitative by using quasi-experiment and survey methods. The results showed that this learning instrument was valid and reliable to use in terms of content and constructs. According to statistical test results, this learning instrument is also effective in improving students' problem-solving skills on magnetic field subjects. Furthermore, the student's response to this learning instrument was very positive, making this learning activity more innovative and fun. Research implies that an OPBL assisted by digital books with 3D animation instruments can be a solution to improve students' physics problem-solving skills, especially during the online learning period.
Development of the Improved Exercise Generation Metaheuristic Algorithm EGAL+ for End Users
Authors: Láng Blanka , Dömsödi Balázs
Published: June 2022

Exercise generation is a subject worthy of investigation. In our previous papers, we presented a novel multi-objective harmony search metaheuristic algorithm called EGAL designed to address a widely recognised problem: generating diverse exercises to measure students’ knowledge on various topics. We demonstrated how to generate more subsets of predefined tasks (i.e. exercises) to measure students’ knowledge in such a way that the quality of these subsets should be good enough according to a predefined quality matrix (i.e. they should cover as many areas of the course as possible). Exercises should be diverse (based on the diversity measure, which is inserted into the multi-objective fitness function) and although the difficulty of these tasks can vary, the difficulty values of their subsets should be equal to generate fair exercises with an equal level of difficulty. The optimisation algorithm has been developed for professionals skilled in optimisation theory. The applications were not end-user friendly, as a high level of special skills and knowledge were needed for its implementation. According to our hypothesis, the EGAL algorithm can be modified for end users without a computer science and optimisation background with certain restrictions and improvements. An improved metaheuristic algorithm (EGAL+) was created and presented in this study. Our hypothesis for this improved algorithm was confirmed by running it on a large number of samples.
Effects and the Analyzing of E-Learning on Higher Education During COVID-19 Period Time – Case Study University "Ukshin HOTI” Prizren
Authors: Hoti Hamdi , Hoti Arber , Kurhasku Edisona
Published: June 2022

The challenges and problems that the educational programs are facing nowadays are those that previously have not been present, therefore, the solutions of these concerns should be compatible and reasonable in order to have a complete function of the educational institutions, especially the universities that are in transition such as University ‘UH’ of Prizren. The main reasons of addressing this topic through this paper are the ongoing discussions from students for not being able to learn enough during lectures given by different professors in the Faculty of Economic. In order to get the most reliable results, we have used the statistical program SPSS v.26 in which different methods such as descriptive statistics, factor analysis, reliability, linear regression, and One-Way Anova analysis are implemented, also, we did the analysis of the connection and comparison of these methods. The results of this research are sustainable of e-learning services and the form of generating of quality model. Also, the relationship of these models highlights among factors and provides a research foundation for elaboration in other contexts.
Practice and Principle of Blended Learning in ESL/EFL Pedagogy: Strategies, Techniques and Challenges
Authors: Alam Sohaib , Faraj Albozeidi Hussein , Okleh Salameh Al-Hawamdeh Basem , Ahmad Farhan
Published: June 2022

Abstract— The present study aims to investigate the efficacy of the Blended learning or Hybrid learning. It also explores the practical challenges and suggests strategies to implement in the actual classroom. Additionally, the study throws light on the advantages and disadvantages of online pedagogy following qualitative method based on interview method of individuals using or utilized Blended learning in the classroom. The interview was conducted through sending emails and the response was recorded and received. The responses of participants were thoroughly evaluated, analyzed and discussed in detail. The article significantly helps in implementation of Blended learning in classroom pedagogy and allows offering a broad view of how the amalgamation of online teaching is possible in an effective way. It also explores pedagogical concerns of actual classroom situations using Blended learning or relying on online teaching. Learning outcomes depends on how well the approach, method, and technique is used or implemented followed by formative and summative assessments. The study highlights the use of blended learning and difference of relying on online teaching. It is important for the stake holders to realize that here is no escape but to find effective way which can ultimately deliver the expected learning outcomes.

Keywords: blended learning; flipped classroom; self-directed learning, pedagogy, strategies, introduction
Influence of Quality Development Over College Students’ Entrepreneurial Competency
Authors: Li Juan , Yang Wenjing , Xuan Yin
Published: June 2022

At present, the entrepreneurship of college students is rarely successfully. It is of great significance to reasonably evaluate college students’ entrepreneurial competency, and discuss how to improve their entrepreneurial performance. The existing studies only focus on specific jobs, and emphasize on theoretical research. There is little report on the empirical quantification and effective promotion of the evaluation model, or on the effects of quality development training. Therefore, this paper explores the influence of quality development over college students’ entrepreneurial competency. Firstly, the indices of college students’ entrepreneurial competency were examined under the effect of quality development. The research contents were combined with the features of the entrepreneurship of college students, the training requirements of quality development, and the current background of society, politics, and economics, producing a reasonable composite evaluation index system. Next, the composite weights of the evaluation indices were solved by the hierarchical structure model and dominant feature recognition model of college students’ entrepreneurial competency. On this basis, the dominant feature recognition model was established for college students’ entrepreneurial competency under quality development planning. Through experiments, the proposed evaluation index system was proved scientific, and the entrepreneurial competency was evaluated for an entrepreneurial team of college students.
Evaluation and Measurement of Student Satisfaction with Online Learning Under Integration of Teaching Resources
Authors: Wang Honglei
Published: June 2022

The effective organization and integration of educational resources can solve the information confusion in online learning, and assist online teaching platforms in recommending multisource personalized learning resources. After the integration of teaching resources, the student satisfaction with online learning should be evaluated, setting the stage for the management and application of teaching resources, as well as the improvement of online teaching quality. Therefore, this paper evaluates and measures student satisfaction with online learning under the integration of teaching resources. Specifically, the name and descriptive features of the Japanese teaching resource library were extracted by the linguistic model, the class structure features and relationship attribute features of the library were learned by graph convolutional neural network (GCNN), and the corresponding eigenvectors were obtained. Next, the similarity of different features was calculated, the teaching resources were sorted, and the matching resources were selected, completing resource integration. After feature integration, the student satisfaction with online learning was evaluated, and a structural equation model (SEM) was established for the student satisfaction with online learning under the integration of teaching resources. The effectiveness of our model was proved through experiments.
Digitized Education
Authors: Yu Poshan , Lu Yao , Hanes Emanuela , Gu Haiyue
Published: June 2022

This chapter aims to investigate the impacts of digitalization on China's education sector, under the influences of both the COVID-19 pandemic and the new national education policy. It will capture the changing relationships between the booming artificial intelligence (AI) sector and China's rapidly developing education market. In addition, this chapter examines how the new double reduction policy in China transforms China's elementary school by analyzing a case in Shanxi, China. By analyzing the data on Web of Science (WoS) and China National Knowledge Infrastructure (CNKI) with CiteSpace, this chapter will also critically discuss the effects of the COVID-19 pandemic. In addition, this chapter will present the findings of a questionnaire about the impact of online education on teaching and learning. This chapter contributes to the field by providing an overview of China's current situation in education.
Remote Learning
Authors: Srivastava Akanksha , Gosain Kritika
Published: June 2022

Educational institutions based on traditional learning follow the setup of face-to-face lectures in a classroom. The dramatic outbreak of COVID-19 shook the world. It has been declared a pandemic by WHO. It has profoundly impacted the global economy. It has affected the education sector, and this fright is doubtless to resonate globally. The COVID pandemic forced countless institutions to stay shut temporarily. This challenged the education sector worldwide and forced educators to shift to a remote mode of teaching. Academic institutions have to alter old-fashioned pedagogical approaches and shift entirely to remote teaching-learning. There is an urgent requirement to cater to students, faculty, academic staff, communities, societies, and the nation. This study includes the importance of remote learning and strengths, weaknesses, opportunities, and challenges of remote learning during the crisis. It also includes the probable strategies to be adopted by the stakeholders of childhood and elementary education to deal with challenges associated with remote learning.
To Study the Impact of E-Learning and Social Media on Student Engagement and Student Satisfaction
Authors: Malik Priyanka , Sahai Seema
Published: June 2022

Ever since the establishment of digital marketing, it has been revolutionizing the world, leaving traditional marketing in the unwanted category. Today, the COVID pandemic has entirely shifted education on the digital platform, with the rise in popularity among famous social media platforms such as WhatsApp, Instagram, Facebook, YouTube, Twitter, Google, LinkedIn, etc. Digitalization has replaced the way information is put across and evident, thus influencing student satisfaction in e-learning. The aim of the study is to analyze and carefully study the effect of social media use, e-learning quality, collaborative learning, and student engagement on student satisfaction. To fully understand and analyze the research outcome, a quantitative research is being conducted. A survey will be distributed to sample students who pursue education through digital means.
The Degito-Financial Movement's Impact of Digital Transformation on Financial Services
Authors: Mansour Nadia , Ben Salem Salha
Published: June 2022

The digital revolution and big data are improving the real-time analysis capacity of organizations, allowing them to optimize their tools and processes and to confront the available data with greater efficiency. In this context, where the time spent on data collection is decreasing, many functions in the company see their missions evolve towards more analysis and communication to help decision making. The COVID-19 pandemic has given a tremendous boost to the development of digitalization in the world. How then will the digitalization of financial services in Africa consolidate after this pandemic and what are its challenges?
Principal Components Analysis
Authors: Haouas Nabiha , Sghaier Asma
Published: June 2022

Today, cryptocurrencies are rapidly gaining popularity and sweeping all the economies of the world, but the bulk of the literature is devoted to a few cryptocurrencies only. The purpose of this chapter is to analyze of the cryptocurrency market. More than 2000 cryptocurrencies are examined, and a set of 70 cryptocurrencies were recovered for a sample spanning 2015-2018. The degree of relationship between the variables was then investigated. The PCA was performed. This analysis allows the initial variables to be replaced by five factors that retain almost all of the information (91.028% of the total information) and have the advantage of being uncorrelated. Therefore, the authors have concluded that the first factor corresponds to the cci30 index used by the crypto funds while the rest of the factors can be distinguished according to some variants.
Effect of dietary protein level and corn processing on behavior activity of high producing dairy cows
Authors: Rafiee Hassan , Alikhani Msaoud , Ghorbani Gholam Reza
Published: June 2022

The objective of this experiment was to evaluate the effects of corn processing and protein level on the feeding, lying, and post milking standing (PMS) behavior in high producing cows. Eight Holstein cows were randomly assigned to diets containing either finely ground (FGC) or steam flaked (SFC) corn based on either low (LP) or high (HP) protein content. Cows receiving LP had lower milk yield than cows receiving HP with similar DMI. Moreover, FGC-fed cows had higher DMI than SFC-fed cows with similar milk yields. Eating and rumination time tended to be lower and chewing time was lower in HP-fed cows than LP-fed cows. Cows fed SFC tended to have higher laying rumination interval and lower lying rumination bouts than cows fed FGC. Total and average PMS were lower in cows fed HP than LP. Cows fed LP had higher chewing activity in the daytime than cows fed HP. Our results suggested that the protein level and corn processing affect the standing and lying behavior of high producing dairy cows, although, this effect is marginal. Results also indicated that probably any change in the diet that increases the rumination and eating times could also improve the PMSThe objective of this experiment was to evaluate the effects of corn processing and protein level on the feeding, lying, and post milking standing (PMS) behavior in high producing cows. Eight Holstein cows were randomly assigned to diets containing either finely ground (FGC) or steam flaked (SFC) corn based on either low (LP) or high (HP) protein content. Cows receiving LP had lower milk yield than cows receiving HP with similar DMI. Moreover, FGC-fed cows had higher DMI than SFC-fed cows with similar milk yields. Eating and rumination time tended to be lower and chewing time was lower in HP-fed cows than LP-fed cows. Cows fed SFC tended to have higher laying rumination interval and lower lying rumination bouts than cows fed FGC. Total and average PMS were lower in cows fed HP than LP. Cows fed LP had higher chewing activity in the daytime than cows fed HP. Our results suggested that the protein level and corn processing affect the standing and lying behavior of high producing dairy cows, although, this effect is marginal. Results also indicated that probably any change in the diet that increases the rumination and eating times could also improve the PMS
Physicochemical characteristics of lamb meat fed with cottonseed associated with calcium lignosulphonate
Authors: Lima Leandro Pereira , Cruz Cristiane Leal dos Santos , Farias Thon Jovita , Wanderley Júnior Marcus Andrade , Junqueira Rodrigo Soares , Oliveira Ana Rosa Alves de , Cordeiro Carla Fabrícia de Araújo , Gusmão Filho José Dantas
Published: June 2022

The physicochemical characteristics of the meat from lambs fed diets containing whole or disintegrated cottonseed, associated or not with calcium lignosulfonate (LignoCaSO3), were evaluated. Thirty non-castrated Dorper x Santa Inês lambs, with an average of 24.9 ± 3.6 kg and four months of age were confined for 60 days in collective stalls and distributed in a completely randomized design with six replications. After slaughter, by means of contrasts, the averages of the parameters of the semimembranous and semitendinosus muscles were analyzed. The cottonseed increased cooking loss and ash, and reduced muscle weight, water holding capacity and red intensity. The disintegration of the cottonseed reduced the shear force in diets without LignoCaSO3, increased the protein and the loss by cooking and reduced the pH in the diets with the additive. The luminosity values increased with the disintegration of the cottonseed in diets with and without LignoCaSO3. The addition of LignoCaSO3 increased the weight of the muscle, protein, ash, pH, shear strength and the intensity of red. Moisture, lipids and yellow intensity were not influenced by the diets. Even changing the physical-chemical characteristics, the cottonseed with or without LignoCaSO3 does not change the quality of the meat
Evaluation of Megathyrsus maximus genotypes under water stress conditions
Authors: Oliveira Elson Marcos de , Martuscello Janaina Azevedo , Jank Liana , Cunha Daniel de Noronha Figueiredo Vieira da , Santos Mateus Figueiredo
Published: June 2022

The objective was to evaluate the production of Megathyrsus maximus genotypes (Syn. Panicum maximum), under different levels of water in the soil. This was a 5x5 factorial completely randomized design conducted in a greenhouse, combining five genotypes of M. maximus (B55, C10 and PM30, cv. Massai and cv. BRS Tamani) and five levels of soil field capacities (20%, 40%, 60%, 100% and 140%), with three replications. Dry matter production was evaluated: leaf, stem, dead material, root, shoot and total dry matters, as well as the number of tillers and leaf:stem and aboveground:root ratios. The qualitative factor (genotypes) was subjected to Duncan test at 5% probability. The quantitative factor (% field capacity) was subjected to regression, adopting 5% as a critical level of probability. There was no interaction between the factors for any of the evaluated characteristics. Significant differences among the genotypes were detected for tiller number, dead material dry mass, root and total dry mass and leaf:stem ratio. There was no significant effect of the percentage of field capacity on most of the characteristics, except for leaf:stem and aboveground:root ratios. Cultivar Massai showed the best forage production compared to the other genotypes, regardless of the percentage of field capacity evaluated. In general, the evaluated genotypes were more tolerant to excess water stress than to water deficit
Induction to tetraploidy in Pacific oysters (Crassostrea gigas)
Authors: Melo Emílio Mateus Costa , Sühnel Simone , Silva Francisco Carlos da , Melo Claudio Manoel Rodrigues de
Published: June 2022

As an alternative to the use of cytochalasin B (CB), 6-dimethylamino-purine (6-DMAP) and thermal shock (heat shock by increasing the temperature from 25 to 36ºC) could be used to induce tetraploidy in Pacific oyster (Crassostrea gigas) diploids. Induction was performed by applying shocks after elimination of the first polar corpuscle at the end of meiosis I. Ploidy rates were verified using flow cytometry. Tetraploid larvae were obtained using all inductor (6-DMAP, thermal shock and CB) treatments. No difference in the efficiency of tetraploidy induction was noted among 6-DMAP, thermal shock and CB. The number of D-larvae and their yield, determined by calculating the percentage of well-formed D-larvae in relation to the total number of larvae, was similar (p > 0.05) among the evaluated induction methods. We suggest that 6-DMAP and thermal shock should be used in tetraploidy induction protocols, thereby avoiding the use of CB, which is a harmful agent for both humans and the environment.
Formação inicial de professores no Pibid-Inglês: representações de aprendizagem e da consolidação na escolha pela profissão docente
Authors: Calvo Luciana Cabrini Simões , Devico Célia Regina Lessa Aleixo , Novelli Josimayre
Published: June 2022

Inserido na área da Linguística Aplicada, este artigo tem como objetivo analisar as representações de aprendizagem docente e da consolidação na escolha pela profissão professor de língua inglesa (LI) de participantes do Programa Institucional de Bolsa de Iniciação à Docência (Pibid – Letras/Inglês – Edital 061/2013 – Capes), de uma universidade estadual paranaense. As reflexões aqui empregadas estão embasadas pelos estudos que contemplam a formação docente em diferentes modalidades (Wallace, 1991; Bomfim & Conceição, 2014), com ênfase na perspectiva sociocultural (Johnson & Freeman, 2001; Johnson, 2009; Abrahão, 2012; Salomão, 2013; Bastos & Sousa, 2021). Este estudo de caso é uma pesquisa de natureza qualitativa e epistemologia interpretativista (Schwandt, 2006), cujos dados foram gerados entre os anos de 2015 e 2017 pela resposta dos pibidianos a um questionário de cunho dissertativo. Os resultados apontam o espaço da sala de aula como um dos aspectos mais evidenciados em suas formações, pois o contato e as experiências vivenciadas neste contexto foram dispositivos para o desenvolvimento da aprendizagem docente de forma contextual, situada e socialmente constituída. Ademais, os conhecimentos mobilizados pelos pibidianos foram essenciais para a constituição de suas identidades docentes e, consequentemente, para a consolidação da escolha pela profissão professor de LI. Conclui-se que todo esse processo de aprender a ser professor, bem como a consolidação pela profissão, foi permeado pela construção de diversos tipos de conhecimentos em uma prática social voltada para docência, circunscrito em um modelo de formação de professores pautado na perspectiva sociocultural. Espera-se contribuir com a discussão sobre aprendizagem docente em políticas de formação de professores, em especial no Pibid, além de dialogar com outros estudos que tiveram como foco esse contexto formativo (Mateus, El Kadri, & Silva, 2013; Silvestre, 2017; El Kadri, Calvo, Chimentão, & Mulik, 2018).
‘Desobedecer’: contribuição aos estudos discursivos foucaultianos
Authors: Braga Amanda
Published: June 2022

Gros, F. (2018). Desobedecer. São Paulo, SP: Ubu. 224p. ISBN 978-85-92886-73-8.
Entrevista com professora Maria Helena de Moura Neves (UPM; Unesp Araraquara/CNPq)
Authors: Antonio Juliano Desiderato , Pereira Helcius Batista
Published: June 2022

Maria Helena de Moura Neves é professora emérita pela Universidade Estadual Paulista Júlio de Mesquita Filho. No início de 2020, venceu, na categoria sênior, a primeira edição do prêmio Ester Sabino, criado pela Secretaria de Desenvolvimento Econômico do Estado de São Paulo para valorizar pesquisadoras que contribuem para o desenvolvimento científico. A professora Maria Helena é uma das maiores responsáveis pelo avanço dos estudos funcionalistas no Brasil e, até o momento, já orientou mais de 200 trabalhos, dentre TCCs, ICs, Mestrado, Doutorado e Pós-doutorado. Além das dezenas de livros e das centenas de trabalhos publicados, foi a primeira e é, até o momento, a única mulher no Brasil a escrever uma gramática. A ‘Gramática de Usos do Português’ foi lançada em 2000 e, apoiada em uma base de dados de 70 milhões de ocorrências, mostra como a língua portuguesa é utilizada pelos falantes brasileiros na atualidade. Como se não fosse o suficiente, a Professora Maria Helena lançou em 2018 a sua segunda gramática, intitulada ‘A Gramática do Português revelada em textos’, obra que se compõe, nas palavras da autora, de lições gramaticais feitas a partir de textos reais.
Effect of different types of sugar on guava jams’ physical, physicochemical, and sensory properties
Authors: Salgado Derlyene Lucas , Oliveira Érica Resende de , Andrade Luan Alberto , Guimaraes Karina Carvalho , Carvalho Gabriel Ribeiro , Ribeiro Alline Emannuele Chaves , Queiroz Fabiana , Carvalho Elisângela Elena Nunes
Published: June 2022

Consumers preference for healthier foods is increasing, especially regarding sugar intake as it is related to many diseases such as obesity and diabetes. This study aimed to evaluate the influence of different types of sugar (white crystal, icing, raw, brown, and coconut) on the physical, physicochemical, and sensory attributes of guava jam in order to evaluate the feasibility of replacing traditional sugars by alternative and more nutritious ones. Physicochemical attributes, rheological properties, texture profile, microbiological risk and sensory acceptance of guava jams were assessed. Coconut and brown sugars gave rise to darker jams with an intense reddish-brown coloration and higher hardness. The jams with higher sensorial quality were the traditional formulations produced with typical sugars - white crystal and icing sugars -, and with raw sugar. It was observed that the sugar used influenced the consumers perception of the product. In general, the most nutritious sugars, brown and coconut, did not produce to jams with good sensory acceptance. White crystal, icing, and raw sugars were more convenient to make the jams since it presented better sensory results.  Clear appearance, less sweetness, more acidic, and softer jams are the features that most pleased the consumers.
Trend change estimation for interrupted time series with heteroscedastic and autocorrelated errors: application in syphilis occurrences in Brazil
Authors: Souza Eniuce Menezes de , Sodré Dário , Noma Isabella Harumi Yonehara , Tanoshi Cinthia Akemi , Pedroso Raissa Bocchi
Published: June 2022

The impact evaluation of exogenous policies over time is of great importance in several areas. Unfortunately, an adequate time-series analysis has not always been taken into account in the literature, mainly in health problems. When regression models are used in the known interrupted time-series approach, the required error assumptions are in general neglected. Specifically, usual linear segmented regression (lmseg) models are not adequate when the errors have nonconstant variance and serial correlation. To instigate the correct use of intervention analysis, we present a simple approach extending a linear model with log-linear variance (lmvar) to estimate linear trend changes under heteroscedastic errors (lmsegvar). When the errors are autocorrelated, the Cochrane-Orcutt (CO) modification is implemented to correct the estimated parameters. As an application, we estimate the impact in temporal trend of the Brazilian Rede Mãe Paranaense (RMP) program in gestational syphilis occurrences in the state of Parana, Brazil. The comparison of the proposed linear segmented model (lmsegvar+CO) modeling both the average and variance, with the usual segmented linear model (lmseg), where just the average is modeled, shows the importance of taking heteroscedasticity and autocorrelation into account.
Retraction of A case of chronic diarrhoea due to Strongyloides stercoralis in an immunocompromised patient by Karunatilaka KMAG, Hewageegana HTN, Perera WNY
Authors: Editor .
Published: June 2022

No abstract available
Interplay between gait and neuropsychiatric symptoms in Parkinson’s Disease
Authors: Russo Michela , Amboni Marianna , Volzone Antonio , Ricciardelli Gianluca , Cesarelli Giuseppe , Ponsiglione Alfonso Maria , Barone Paolo , Romano Maria , Ricciardi Carlo
Published: June 2022

Parkinson’s Disease (PD) is a neurodegenerative disease which involves both motor and non-motor symptoms. Non-motor mental symptoms are very common among patients with PD since the earliest stage. In this context, gait analysis allows to detect quantitative gait variables to distinguish patients affected by non-motor mental symptoms from patients without these symptoms. A cohort of 68 PD subjects (divided in two groups) was acquired through gait analysis (single and double task) and spatial temporal parameters were analysed; first with a statistical analysis and then with a machine learning (ML) approach. Single-task variables showed that 9 out of 16 spatial temporal features were statistically significant for the univariate statistical analysis (p-value< 0.05). Indeed, a statistically significant difference was found in stance phase (p-value=0.032), swing phase (p-value=0.042) and cycle length (p-value=0.03) of the dual task. The ML results confirmed the statistical analysis, in particular, the Decision Tree classifier showed the highest accuracy (80.9%) and also the highest scores in terms of specificity and precision. Our findings indicate that patients with non-motor mental symptoms display a worse gait pattern, mainly dominated by increased slowness and dynamic instability.
Statistical survey focused on diffusion and knowledge of energy drinks, conducted in Palermo
Authors: Venturella Fabio , Schimmenti Chiara , Manzone Elvira , Mortillaro Francesca , Mistretta Irene , Giammanco Marco , Liga Anastasia Valentina , Cancellieri Giulia , Teresi Marina
Published: June 2022

In recent years energy drinks consumption has increased, due to their ability to improve physical and cognitive performance. Unfortunately, because of poor or incorrect information, people are not always aware of the harmful consequences of these drinks such as obesity, diabetes, hypertension, tachycardia until death. Therefore, we conducted a statistical survey in the Palermo area, submitting a paper questionnaire to 1003 people. Data analysis shows that only 29% of the audience never consumed energy drinks, while 71% tried them at least once in their life, especially in adolescence; 81% never or rarely drink them, 14% drink them a few times a month, while 5% drink them several times a week. Energy drinks are mostly consumed in disco, sport and study contexts; 93% of respondents are aware of the risks caused by the excessive consumption of them; 91% know that it is not appropriate to associate them with alcohol, but 9% think it is better to mix them; 72% of interviewees know that people should never drink energy drink with alcohol, 13% do it only in the weekend, while 15% think it is appropriate to do whenever they want. In fact, 14% do not believe it is risky to take energy drinks together with alcohol, and 40% do not know whether it is risky or not, while 46% know it can be risky; 45% associate the idea of cigarettes with alcohol and energy drinks. In conclusion, it is appropriate to highlight their risks to prevent some fatal consequences.
Knowledge and Attitude toward Electroconvulsive Therapy among MBBS Interns
Authors: Uma Gayathri B. P. , Kantipudi Suvarna Jyothi , Sathianathan Ramanathan
Published: June 2022

Background:

Electroconvulsive therapy (ECT) remains the most effective modality of treatment in many major mental health disorders, which calls for a rapid response. However, the media's portrayal of ECT as inhumane has resulted in a flawed opinion among public and reduced exposure has led to lesser knowledge about ECT among the medical health professionals working in a nonpsychiatric setting.

Aims:

To assess the knowledge and attitude toward ECT among MBBS students doing internship.

Design and Setting:

This was a cross-sectional study conducted at the department of psychiatry in a tertiary care teaching institute.

Materials and Methods:

The study was conducted among 100 MBBS students who were undergoing internship from a tertiary teaching hospital. The students were recruited from various clinical postings, and after obtaining informed consent, their knowledge and attitude toward ECT was assessed.

Statistical Analysis:

SPSS version 20.0 was used.

Results:

Majority (59%) of the students rated their psychiatry knowledge as minimal and around 70% reported to have minimal knowledge regarding ECT. 73% of the study population felt that ECT was used to control violent patients. Almost 91% of the students felt that they needed more exposure toward ECT in their undergraduate curriculum.

Conclusion:

MBBS interns had some knowledge about ECT; however, they still have some misconceptions and negative attitudes about the treatment. Novel teaching strategies could be inculcated in the existing curriculum which could help with more exposure and better understanding of the subject.
Depressive symptoms in individuals with burns
Authors: Pinatti de Moraes Sandra Renata , Marcolan Joao F.
Published: June 2022

Objectives:

The objective of the study is to analyze the presence and intensity of depression symptoms in burn survivors.

Methods:

This is a descriptive and quantitative study, with 36 participants with burns admitted to a referral center in Londrina/PR, between January 2016 and May 2019. Interviews were conducted at two moments after hospital discharge with the application of psychometric scales for depression (Beck, Hamilton, and Montgomery-Asberg) and a semi-structured questionnaire for information on sociodemographic data. Data analysis was performed using statistical tests.

Results:

Most participants presented moderate and severe depressive symptoms, which were higher in the second interview. Regardless of having a previous diagnosis, there was an increase in the intensity of depressive symptoms from the first to the second assessment due to dissatisfaction with self-image, but without a significant association with sociodemographic variables. Most participants reported not wearing clothing to cover the injury and not worrying about hiding the injury.

Conclusion:

The expressive majority of the participants had depressive symptoms, the majority of which were of moderate and severe intensity.
Pediatric burn wound complicated with herpes simplex virus infection
Authors: Verma Mukta
Published: June 2022

Herpes simplex virus infection in major burn wounds is a well-known entity. Here, I am reporting a relatively rare case of a pediatric patient who presented with superficial partial-thickness scald burn injury over his face and neck. He was managed in outpatient department services with topical antibiotic dressings. After 2 weeks, he presented with multiple vesicular lesions over his lower face and neck with delayed wound healing in that area. Clinical suspicion of superadded viral infection was made. Tzanck smear and polymerase chain reaction test confirmed the infection with herpes simplex virus. Antiviral treatment was started, and regular dressings were continued. The patient responded well to the treatment, and lesions were disappeared. Later, he developed hypertrophic scarring over the lower part of face. Now, he is being managed on massage and pressure therapy. There has been no relapse of viral infection till 6 months of follow-up.
On elliptic curves with p-isogenies over quadratic fields
Authors: Michaud-Jacobs Philippe
Published: June 2022

Let K be a number field. For which primes p does there exist an elliptic curve
$E / K$
admitting a K-rational p-isogeny? Although we have an answer to this question over the rationals, extending this to other number fields is a fundamental open problem in number theory. In this paper, we study this question in the case that K is a quadratic field, subject to the assumption that E is semistable at the primes of K above p. We prove results both for families of quadratic fields and for specific quadratic fields.
Strictly singular non-compact operators between $L_p$ spaces
Authors: Hernández Francisco L. , Semenov Evgeny M. , Tradacete Pedro
Published: June 2022

We study the structure of strictly singular non-compact operators between

L_p

spaces. Answering a question raised in earlier work on interpolation properties of strictly singular operators, it is shown that there exist operators

T

, for which the set of points

(1/p,1/q)\in(0,1)\times (0,1)

such that

T\colon L_p\rightarrow L_q

is strictly singular but not compact contains a line segment in the triangle

\{(1/p,1/q):1<p<q<\infty\}

of any positive slope. This will be achieved by means of Riesz potential operators between metric measure spaces with different Hausdorff dimension. The relation between compactness and strict singularity of regular (i.e., difference of positive) operators defined on subspaces of

L_p

is also explored.
A pilot randomised controlled trial of oral doxycycline after endoscopic sinus surgery and its effects on the sinonasal microbiome
Authors: Challis J.M. , Baptista M.S. , Ragupathy R. , Lee C.K. , Wood A.J.
Published: June 2022

Background: Oral antibiotics are commonly prescribed after endoscopic sinus surgery (ESS) despite minimal clinical data supporting this practice. We aim to assess the effect of post-ESS doxycycline on clinical outcomes and on the diversity and composition of the sinonasal microbiome. Methods: Samples from the middle meatus were collected from twelve patients undergoing ESS to treat chronic rhinosinusitis. Patients were double-blind randomised to receive either oral doxycycline or placebo in the post-operative period. Further samples were collected at two weeks and three months post-operatively. The sinonasal microbiome was characterized using 16S ribosomal RNA (rRNA) gene amplicon sequencing. SNOT-22 scores, Lund Mackay scores, and Modified Lund Mackay Endoscopic Scores (MLMES) were collected. Results: After ESS, bacterial diversity increased while SNOT-22 score decreased for both treatments. Microbiome composition diverged between treatments, and random forest analysis identified nine taxa that may distinguish treatment groups. There was no significant difference in SNOT-22 score, 3-month MLMES or bacterial diversity between the placebo and doxycycline groups. The trends for all of these measures favour placebo. Conclusion: In this pilot study, we detected no significant difference between placebo and antibiotic treatments in clinical outcome. As patient symptoms improved after ESS, we detected a concurrent increase in the diversity of the sinonasal microbiome. Our data highlight the need for and facilitate the design of future larger studies to explore the relationship between prophylactic antibiotics and post-ESS recovery.