bluuebunny/crossref_metadata_2025 huggingface dataset:
Preferred Cognitive Learning Patterns (VAK) Among Secondary Students Admitted to King Saud University and its Effect on their Academic Achievement in Physics
Authors: Almomani Jehad Ali
Published: May 2019

The aim of this study was to determine the preferred cognitive learning patterns among secondary students and their effect on their achievement in physics. To achieve the objective of the study, the researcher designed a scale of cognitive learning patterns (VAK) that consisted of (16) items, and after verifying its validity and reliability, it was applied to the sample of the study that consisted of (628) students randomly selected from the study population composed of secondary students admitted to King University Saud for the academic year 2017-2018. The results showed that there were statistically significant differences between the types of learning patterns preferred by students, that the majority of students preferred the visual pattern, followed by those who preferred the auditory pattern, while the kinesthetic pattern was the least favored by the students. The results also showed statistically significant differences in the learning patterns preferred by students attributed to the gender variable. It showed that males prefer the auditory pattern more than females, while females preferred the visual pattern more than males. There were no gender differences in their preference for the kinesthetic pattern. Moreover, Results related to the effect of the learning pattern on achievement showed a statistically significant effect of learning patterns on students’ achievement in physics. It showed that the students who preferred the kinesthetic pattern are those who had the highest academic achievements, followed by the students who preferred the visual pattern, while the students who preferred the audio pattern were the least achievable students. Based on these results, the study recommended that teachers should be encouraged to diversify the strategies and methods of university teaching to suit the learning styles preferred by their students, especially the new students, to motivate them to learn in the university environment and to provide the training needs and requirements necessary to enable them to take into consideration the individual differences among their students when they identify educational goals, content, methods, and strategies.
English for Ecotourism and Its Sustainability with Augmented Reality Technology
Authors: Chien Chi-ying
Published: May 2019

When it comes to traveling, more and more people are becoming interested in having profound experiences to the places they are visiting and the local inhabitants. However, there currently very few tour guides in Taiwan who are well equipped to promote preservation of the environment and sustainable development. In addition, Taiwanese students interested in the field have been found to rarely talk with foreigners about topics related to ecology or environmental protection even though they are popular issues around the world. This study centres on English for ecotourism that is supplemented by comprehensive project-based learning (CPBL) and augmented reality (AR) technology to explore how teaching such a course using AR technology impacts English for specific purposes (ESP) learning and sustainable development. Two classes of ninety-nine college students in total participated in the study. The research also involved a survey, comprised of three sets of questionnaires concerning student satisfaction with AR application, CPBL, and ESP learning. An independent t-test and an analysis of variance were completed to examine the variables of gender, class, and English proficiency level to understand the significance of student satisfaction. The results found that more tourists chose the AR versions of the brochures than the general versions. Satisfaction between both foreign language classes regarding CPBL and ESP learning was significant. Across the three different English proficiency levels, the mean level of student satisfaction for all three variables was highest in the high proficiency group. This study reveals that adopting an AR approach for CPBL and ESP learning could better achieve the goals of ESP teaching and sustainable development than the traditional English teaching model based on in-class lectures.
The Value and a Preliminary Study of the Integration of Traditional Chinese Painting and Calligraphy & Modern and Contemporary Art in Primary School Art Teaching
Authors: Gao Hongchen
Published: May 2019

Finding a unique way to help students better accept between traditional Chinese Painting and Modern and Contemporary Art is an increasing concern in primary school art teaching. The purpose of this study is to investigate fine art education field according to analyze the current situation of Chinese traditional painting and calligraphy together with Modern and Contemporary Art in the art curriculum of primary schools: shallow embedded curriculum, shortage of Class Hours and relatively simple teaching method. Based on the key competence of the disciplines, it discusses the value of integrating those two in art teaching of primary schools, proposes a Bridge to connect the Chinese painting and calligraphy& Modern and contemporary art and provides a curriculum construction model that connects the artistic language with the concept of disciplines. This study takes the work of artist A.R.Penck as the theme, starting from the big idea, looking for basic problems, designing a curriculum with the integration of two kinds of art forms, and teaching practice at The China Soong Ching Ling Science & Culture for Young People. This study not only answers the feasibility of the curriculum construction model but also gives some critical thinking about it.
The Impact of Audit Committee Characteristics on the Creative Accounting Practices Reduction in Jordanian Commercial Banks
Authors: Saleem Khalil Suleiman Abu
Published: May 2019

This study aimed at determining the impact of the characteristics of the Audit Committee (The effect of Activity of the Audit Committee, the size of the Audit Committee, and Independence of the Audit Committee) in reducing creative accounting practicesin Jordanian commercial banks.The study population is composed of all Jordanian banks listed on the Amman Stock Exchange (16), during the period from 2011 to 2017. The study sample is represented by all Jordanian commercial banks. The current study is based on panel data since the data combine one-time and cross-section data for a period of time. The data was composed of a set of indicators for 13 Jordanian commercial banks for the period from 2011 to 2017, and data have been collected from the banks' annual reports. The adoption of the study on the analysis of time-series data comes from the increase in degrees of freedom.

The results of the hypothesis test indicate that there is a significant effect of Audit Committee characteristics on the reduction of creative accounting practices in Jordanian banks at a level of significance of 0.05 except for variable (size of the Audit Committee).
Guirado, Carles; Valldeperas, Natàlia i Tulla, Antoni F. (2017). L’agricultura social a Catalunya: Desenvolupament local i ocupació per a col·lectius en risc d’exclusió social
Authors: Prats Ferret Maria
Published: May 2019

Guirado, Carles; Valldeperas, Natàlia i Tulla, Antoni F. (2017)L’agricultura social a Catalunya: Desenvolupament local i ocupació per a col·lectius en risc d’exclusió socialValls: Cossetània Edicions, 159 p.ISBN 978-84-9034-651-8
Contribuições da Tecnoracia e da Etnomatemática para a Promoção da Educação Financeira de Estudantes Surdos
Authors: Pinheiro Rodrigo Carlos , Rosa Milton
Published: May 2019

Apresentamos, neste artigo, alguns resultados obtidos em uma pesquisa de Mestrado Profissional em Educação Matemática, que está relacionada com o desenvolvimento da Educação Financeira de jovens e adultos Surdos, que se comunicam em Libras, por meio da perspectiva etnomatemática. Especificamente, procuramos compreender a relação dos resultados desse estudo com um dos elementos do Currículo Trivium para a Matemática, denominado por Tecnoracia, que foi proposto D’Ambrosio, em 1999. Desse modo, essa reconceituação curricular é composta pela literacia (instrumentos comunicativos), materacia (instrumentos analíticos) e tecnoracia (instrumentos materiais e tecnológicos). A abordagem metodológica foi qualitativa, com a utilização dos pressupostos da Teoria Fundamentada nos Dados (Grounded Theory). Da fase analítica, foi possível inferir que o programa etnomatemática possibilitou o fornecimento dos instrumentos comunicativos, analíticos, materiais e tecnológicos, que são característicos da cultura Surda para que os alunos pudessem resolver as situações-problema propostas em sala de aula.
Um Novo Modelo para o Imposto de Renda Pessoa Física no Brasil
Authors: Reis Thiago Linhares Brant , Washington Alexandre Duarte
Published: May 2019

No Brasil, o Imposto de Renda Pessoa Física (IRPF) é calculado com base em cinco grandes faixas de renda. Neste trabalho é proposto um modelo mais equitativo, baseado em uma função contínua, utilizando-se técnicas de Cálculo Diferencial e Integral – uma aplicação de modelagem matemática à macroeconomia. Com o auxílio de um algoritmo (apresentado no apêndice), o método atual e o novo método são comparados, buscando-se evidenciar algumas vantagens do segundo. O novo modelo é relativamente simples, tornando-se atrativo para aplicação pelos gestores da Economia. Ademais, pretende-se também contribuir para a redução da sonegação fiscal.
Political Ramifications of Formal Ugliness in Kant’s Aesthetics
Authors: Buckman Christopher ,   Philosophy Documentation Center
Published: May 2019

Kant’s theory of taste supports his political theory by providing the judgment of beauty as a symbol of the good and example of teleological experience, allowing us to imagine the otherwise obscure movement of nature and history toward the ideal human community. If interpreters are correct in believing that Kant should make room for pure judgments of ugliness in his theory of taste, we will have to consider the implications of such judgments for Kant’s political theory. It is here proposed that pure, formal ugliness symbolizes regressive, counter-teleological trends in nature and history. Kant’s paradoxical stance on the right to rebellion, both condemning and supporting the French Revolution, is interpreted as failing to take into account negative social forces signified by ugliness, and therefore neglecting the role of moral agency in social change.
O ENSINO DA GEOGRAFIA POLÍTICA LOCAL NA ESCOLA COMO PERSPECTIVA DE EFETIVAÇÃO DA CIDADANIA
Authors: Borowski Lara Moraes , Fonseca Antonio Angelo Martins da
Published: May 2019

A partir da geografia política é possível trabalhar conteúdos conceituais e atitudinais fundamentais para a efetivação da cidadania, objetivo primaz da educação básica. E a escala local, especificamente, apresenta importantes revelações que são muito bem representadas pelo papel do município no federalismo brasileiro. Com base nestas considerações, objetiva-se neste artigo analisar quais são as principais abordagens referentes à geografia política presentes na educação básica e discutir sobre a potencialidade da escala local como uma perspectiva de aprendizagem significativa e de efetivação da cidadania. Por fim, é apresentada uma proposta de sequência didática, flexível, que pode ser operacionalizada em sala de aula tomando o município como escala de referência para análise.
MATERIAL DIDÁTICO PARA INCURSÕES LOCAIS: AMPLIANDO POSSIBILIDADES PARA A GEOGRAFIA ESCOLAR COM O ATLAS MUNICIPAL
Authors: Oliveira Ana Isabel Leite , Lima Eliany Dionizio , Santos Karla Maria De Queiroz dos , Silva Rute Araújo da
Published: May 2019

Diante da experiência de execução do projeto de extensão “Laboratório SIG: atlas escolar”, o objetivo deste trabalho é apresentar um relato da experiência referente a elaboração do atlas escolar para o município de Serrinha, estado da Bahia, desenvolvido no Campus XI da UNEB. De natureza exploratória-descritiva e caracterizado como pesquisa-ação, também se voltou para a formação de professores, propiciando a aprendizagem, a pesquisa, o fazer pedagógico em cursos de licenciatura e a utilização das tecnologias computacionais e geográficas para a produção de material didático com conteúdo local.
ORGANIZAÇÃO ESPACIAL DA SUB-REGIÃO DE MACAPÁ (AP), NA AMAZÔNIA SETENTRIONAL AMAPAENSE (DA GÊNESE A ESTADUALIZAÇÃO)
Authors: Amorim João Paulo De Almeida , Porto Jadson Luis Rebelo
Published: May 2019

O trabalho tem o objetivo de analisar a organização espacial da sub-região de Macapá – SRM, na Amazônia Setentrional Amapaense – ASA. Esta é composta pelos municípios de Macapá, Santana, Mazagão, Porto Grande, Ferreira Gomes, Serra do Navio, Itaubal do Piririm, Pedra Branca do Amaparí e Cutias do Araguarí, através de seus aspectos político-administrativos, com destaque a partir de seu desmembramento territorial e a dinâmica econômica presente na região de sua gênese até o período de sua estadualização. A forma como está organizado este artigo revela a necessidade de se compreender os diferentes papéis conferidos a sub-região de Macapá, na ASA, em particular. Para tanto, a metodologia utilizada no artigo foi analisar dados secundários, documentos, livros e artigos científicos que comprova a importância desta dentro da Amazônia, em sua dinâmica socioespacial.
Personal Growth Initiative and Subjective Well-being: The Mediation Role of Meaning in Life
Authors: Freitas Clarissa Pinto Pizarro , Cankaya Elif Merve , Damásio Bruno Figueiredo , Haddad Emily Jean , Kamei Helder Hiroki , Tobo Patricia Renovato , Koller Sílvia Helena
Published: May 2019

This study investigated the mediating effect of meaning in life on the relationship between personal growth initiative and subjective well-being. The sample was composed of a total of 1,899 Brazilian participants who voluntarily took part in this study by completing the study survey. Based on the results of the structural equation modeling, the relationship between personal growth initiative and subjective well-being was found to be partially mediated by the presence of meaning in life. Age was found to influence the mediation, as older participants reported greater PGI and MIL. Limitations of the study, as well as directions for future research are discussed.
Burnout at the Supermarket: Testing the Relevance of Personality and Stressful Situations
Authors: Colom Martínez Claudia Cristina , Contreras Alcalde María José
Published: May 2019

The well-known burnout syndrome includes psychological facets that have been analyzed with respect to professions with systematic and persistent social contact. However, the context is just one side of the coin, albeit important. There might be some differential vulnerability to the development of the syndrome (the other side of the coin). The study reported here is based on a previous research that observed high levels of the syndrome in cashiers of several supermarkets. Going one step further, here (a) 13 cashiers were compared with 13 workers from other sections of a supermarket, and (b) the personality traits considered by the Big Five Model were measured for estimating the efficient use of knowledge and skills required for achieving social goals (P factor).  These were the results: (a) no group differences in the syndrome between cashiers and other sections, and (b) negative correlations between the P factor and burnout scores. It is concluded that individual differences in personality might interact with the occupational context for promoting (or preventing) the burnout syndrome.
Resiliency, Meaning in Life, and Life Satisfaction: An Examination of Moderating Effects
Authors: Lau Chloe Lau , Feher Anita , Wilson Claire Anne , Babcock Sarah E. , Saklofske Donald H.
Published: May 2019

While presence of meaning in life (i.e., presence) is associated with a plethora of desirable qualities (e.g., greater well-being, longevity, positive affect), search for meaning is associated with psychological distress (e.g., reports of conflict, rumination, depression; Boyle, Barnes, Buchman, & Bennett, 2009). Individuals with higher resiliency, defined as a multifaceted competency in adapting and recovering from adversity, could potentially mitigate the distress associated with search, and thus, achieve greater satisfaction with life (SWL). The present study examined the moderating role of meaning in life between resiliency (i.e., sense of mastery and sense of relatedness) and SWL in a sample of Canadian university students (N=289). Hierarchical regression analyses showed that there was a positive association between resiliency and SWL and this association was stronger at higher levels compared to lower levels of search for meaning. These results suggest that individuals searching for meaning with high levels of mastery have the greatest SWL, while their counterparts with low mastery have the lowest SWL. Similar moderating effects of search were found with the positive association between sense of relatedness and SWL. Overall, findings suggest that protective factors in resiliency may buffer against the potential negative impact of search.
Factor Structure of the Symptom Assessment-45 Questionnaire (SA-45)
Authors: Holgado Tello Francisco Pablo , Vila Abad Enrique , Barbero Garcia Mª Isabel
Published: May 2019

We describe the internal structure of the Symptom Assessment-45 Questionnaire (SA-45; Davison et al., 1997) in a sample of non-clinical Spanish subjects. The scale was developed for treatment outcome assessment in psychiatric settings; however, many studies have examined its psychometric properties in non-clinical populations. The internal structure of these studies usually replicates the dimensionality proposed in the original study closely. In this work, the scale was administered to a sample of 823 participants. In order to analyse the dimensionality of the instrument in a non-clinical population, exploratory and confirmatory factor analyses using polychoric correlations were carried out. The results obtained, are similar to those obtained for the original model and replicated in later studies, but there are important nuances that should be taken into account in defining a measurement model for the sample used. These data confirm the need for further research in a non-clinical population.
Alderdommens pædagogisering
Authors: Nørtoft Kamilla
Published: May 2019

Denne artikel handler om pædagogisering af alderdommen og ældre mennesker. Pædagogik forekommer på mange forskellige niveauer, og ofte giver ordet associationer til opdragelse, dannelse og uddannelse af børn og institutionaliserede unge og voksne. Det danske samfunds pædagogiske tiltag overfor ældre mennesker handler oftest om sundhed på den ene eller den anden måde. Ældrepædagogik bliver således til sundhedspædagogik. Det handler om at få folk til at arbejde aktivt på at holde sig sunde og friske for at modvirke den såkaldte ældrebyrde, som ifølge visse diskurser om den demografiske udvikling er som en bombe under vores samfund. Denne diskurs tager udgangspunkt i forestillingen om den naturlige aldring og en medicinsk forståelse af cellernes uundgåelige degenerering. Mens ældre mennesker således fra forskellige sider opfordres til at holde sig sunde og aktive for at udsætte det forestillede forfald så længe som muligt, bliver yngre ældre mennesker også opfordret til at forholde sig til den dag, hvor udsættelsen ikke længere er aktuel, men forfaldet er indtrådt. Dette kan f.eks. ske ved at fremtidssikre deres bolig med fysiske foranstaltninger, dergør den tilgængelig og håndterbar – selv for folk med fysiske funktionsnedsættelser. I artiklen vil jeg kaste lys over ældrepædagogikken på to niveauer; et politiko-økonomisk niveau repræsenteret ved forskellige former for politiske mål og retningslinjer og et relationsniveau repræsenteret af de medarbejdere, som møder ældre borgere i deres kontakt med velfærdssamfundet. De to niveauer er ikke isoleret fra hinanden, og særligt det relationelle niveau er i forskellige grader rammesat af det politiko-økonomiske niveau, som dog alligevel efterlader et vist manøvrerum for mellemmenneskelige relationer i den pædagogiske praksis. Efter en kort introduktion til ældrepædagogik som felt, der bevæger sig mod sundhedspædagogik, og til eksempler på politikudvikling inden for ældreomsorgen, vil jeg præsentere tre forskellige ældrepædagogiske perspektiver: a) vellykket aldring, b) selvstændig læring og udvikling under vejledning og uddannelse og c) bæredygtig aldring. Jeg vil illustrere de treperspektiver med eksempler fra forskellige ældrepædagogiske praksis- og fagfelter og vise, hvordan de kan forstås ud fra det politiko-økonomiske og/eller det relationelle pædagogiskeniveau. Perspektiverne er baseret på etnografiske studier af ældrepædagogiske sammenhænge, politikker og tværfaglige personaleteams’ forståelser af professionelles opgaver og roller i forhold til deres målgrupper. Analysen viser, hvordan pædagogiske tilgange baseres på forskellige værdisæt og måder at at identificere ældre mennesker på.
ADHD – En tidstypisk tidsforstyrrelse?
Authors: Rasmussen Gitte , Meinert Lotte
Published: May 2019

Baseret på feltarbejde i danske familier undersøger denne artikel håndtering og betydning af tid i familier, der lever med diagnosen Attention Deficit Hyperactivity Disorder (ADHD). Vi argumenterer for at se på et aspekt af ADHD som en tidsforstyrrelse, og undersøger hvordan dette håndteres i et moderne dansk hverdagsliv præget af mange strukturelle tidslige vilkår. Inspireret af den danske antropolog Mikka Nielsen (2016) fortolker vi hverdagslivet med ADHD ud fra et tidsperspektiv, hvor ADHD ses som en lidelse, der bliver særligt synlig i tidslige sammenstød med omgivelserne. Vi beskriver, hvordan væsentlige aspekter af ADHD kan forstås som forårsaget af en forstyrrelse i oplevelsen af tidens normale struktur af fortid-nutid-fremtid. Med sociologen Michael Flahertys begreb tidsarbejde (2011) belyser vi, hvordan brug af genstande, aktiviteter, medicin og støtte fra andre hjælper den enkelte med ADHD til at navigere i tiden. Vi kontekstualiserer analysen med strukturelle perspektiver på modernitetens kendetegn og belyser derved, at tidslige krav fra de institutionelle rammer påvirker familielivet med ADHD. Artiklen argumenterer således for et dobbelt-temporalt perspektiv på familielivet med ADHD. Undersøgelsen peger på, at feltarbejde i familier, der lever med ADHD, kan bidrage med vigtig viden, der kan opkvalificere vejledning der gives fra sundhedssystemet til patienter med ADHD og deres familier. Vi opfordrer til videre forskning om temporalitet i familier, der lever med ADHD.
Kubrick en Barcelona, o la celebración de la excelencia creativa
Authors: Sánchez-Navarro Jordi
Published: May 2019

Artículo relacionado con la exposición en el Centro de Cultura Contemporánea de Barcelona (CCCB) sobre Stanley Kubrick, la que ya se ha convertido en la exposición más visitada en la historia del centro. El éxito de esta exposición muestra con claridad que la creación cinematográfica, cuando está bien explicada, sigue despertando el interés de los públicos de la cultura “en vivo”.
Me enfadé con un algoritmo ('and I liked it'): la recomendación de contenidos en plataformas sociales
Authors: San Cornelio Gemma
Published: May 2019

Sí, lo que dice el título del artículo es cierto. Me enfadé con la aplicación del móvil de Spotify (y me gustó), más concretamente con el modo en que gestiona las listas de canciones (playlists) y de su comunicación con el usuario (o sea, conmigo). Os lo cuento a continuación.
'Cinemagraph': un recurso gráfico 'all in one'
Authors: Martorell Sandra
Published: May 2019

El cinemagraph es un recurso gráfico que nace de la hibridación, fundamentalmente de la fotografía y el vídeo, aunque también interviene el diseño, la computación, la cinematografía o la comunicación entre otras disciplinas, dando como resultado una imagen fija, pero en la que se observa una pequeña región en movimiento; un detalle sutil en bucle que atrapa nuestra mirada.
La dimensión reconocida
Authors: Roig Antoni
Published: May 2019

En términos televisivos, el año 2019 será recordado en buena parte por la finalización de series tan queridas y al mismo tiempo con etapas finales tan criticadas desde el propio fandom como Juego de Tronos o Big Bang Theory. Pero esta vez quiero fijarme en una serie de legado casi infinito y tampoco exenta de polémica entre los fans. Vuestra próxima parada, de nuevo... La dimensión desconocida.
Publons, ¿qué quiere ser de mayor?
Authors: López-Borrull Alexandre
Published: May 2019

Publons es una plataforma creada en 2012 por Andrew Preston y Daniel Johnston y pensada inicialmente para convertirse en una base de datos de revisores científicos. En este nuevo artículo, trataremos su evolución a raíz de la compra en 2017 por parte de Clarivate Analytics, la empresa que tiene productos tan relevante como el Web of Science, los gestores actuales del famoso y criticado factor de impacto. Y hablando de impacto, ¿cuál pensamos que puede tener en un futuro?
Immigrant Students’ Experiences of Higher Education in Iceland: Why Does Culturally Responsive Teaching Matter?
Authors: Benediktsson Artem Ingmar , Wozniczka Anna Katarzyna , Tran Anh Dao Katrín , Ragnarsdóttir Hanna
Published: May 2019

The paper is based on the first, extensive, qualitative study on immigrant students’ experiences of university education in Iceland. The theoretical framework is based on culturally responsive teaching that derives from multicultural education theory which focuses on analysing the position of minority groups, including immigrants in societies with special attention to their access to education. According to the theory, culturally responsive teaching methods and balanced workload based on the students’ language abilities, previous experiences and background have positive effects on the immigrant students’ well-being and generally contribute to their sense of belonging in the universities (e.g. Gay, 2018; Nieto, 2010). The participants of the study are 41 immigrant university students who participated in focus group and individual interviews. The findings show that despite the fact that culturally responsive teaching as an established teaching method is still an uncommon phenomenon in Icelandic universities, the students’ experiences are highly positive, even when culturally responsive teaching is applied unsystematically by some teachers. Furthermore, the findings reveal that the students especially valued an atmosphere of care, trust and power-sharing in the classroom. The study makes a significant contribution to understanding immigrant students’ experiences of the education process in Icelandic universities that currently emphasise the importance of multicultural education and pay special attention to providing equal rights to education to everyone regardless of their origin. Furthermore, the study is relevant from a comparative perspective and contributes to the general discussion about immigrant students in higher education in Europe.
Active and passive procrastination in terms of temperament and character
Authors: Zohar Ada H. , Shimone Lior Pesah , Hen Meirav
Published: May 2019

Background

While passive procrastination is usually associated with distress and dysfunction active procrastination may be an effective coping style. To test this possibility, we examined passive and active procrastination in terms of temperament, character, and emotional intelligence (EI), as well as by a short-term longitudinal study.

Methods

Adult community volunteers (N = 126) self-reported twice in an online short-term longitudinal study. At baseline on active and passive procrastination, as well as on the temperament and character inventory of personality (TCI-140) and EI. At first testing, they were asked to freely describe three personal goals and to make action plans to achieve each within the next two weeks. Two weeks later they reported on progress on their personal goals (PPG).

Results

PPG correlated positively with active procrastination and negatively with passive procrastination. Dividing the participants into median splits on active and passive procrastination resulted in four groups: Active, Passive, Active-Passive, and Non-Procrastinators. Analysis of variance showed that active procrastinators had an advantage in temperament and character traits as well as EI. Active procrastinators were also higher than the other groups on personality profiles i.e. combinations of traits; dependable temperament and well-developed character.

Conclusions

Active procrastination can be an adaptive and productive coping style. It is associated with dependable temperament, well-developed character, and high emotional intelligence and predicts meeting personal goals.
Maternal ancestry analyses of red tilapia strains based on D-loop sequences of seven tilapia populations
Authors: Jiang Bingjie , Fu Jianjun , Dong Zaijie , Fang Min , Zhu Wenbin , Wang Lanmei
Published: May 2019

Background

Many tilapia species or varieties have been widely introduced and have become an economically important food fish in China. Information on the genetic backgrounds of these populations is deficient and requires more research, especially for red tilapia strains.

Methods

In the present study, displacement loop (D-loop) sequences were used to evaluate the genetic relationship and diversity of seven tilapia populations that are widely cultured in China; this was done specifically to speculate on the maternal ancestry of red tilapia strains. Three red tilapia varieties of Oreochromis ssp., Taiwan (TW), Israel (IL), and Malaysia (MY) strains and other populations, including O. aureus (AR), O. niloticus (NL), O. mossambicus (MS), and the GIFT strain of O. niloticus, were collected and analyzed in this study.

Results

A total of 146 polymorphic sites and 32 haplotypes of D-loop sequences were detected among 332 fish and four major haplotypes were shared among the populations. The TW and NL populations had a greater number of haplotypes (20 and 8, respectively). The haplotype diversity (Hd) and nucleotide diversity (π) of each population ranged from 0.234 to 0.826, and 0 to 0.060, respectively. The significant positive Tajima’s D value of neutral test were detected in the NL, IL, and MY populations (P < 0.05), which indicated these populations might have not experienced historical expansion. According to the pairwise F-statistics, highly significant genetic differentiations were detected among populations (P < 0.01), with the exception of the IL and MY populations (P > 0.05). The nearest K2P genetic distance (D = 0.014) was detected between the MS and TW populations, whereas, the farthest (D = 0.101) was found between the GIFT and AR populations. The results from the molecular variance analysis (AMOVA) showed that there was an extremely significant genetic variation observed among the populations (P < 0.01), which contained 63.57% of the total variation. In view of the genetic relationship of red tilapia strains with other populations, TW and IL were detected with more similar genetic structures related to MS, and MY was more genetically similar to GIFT (or NL), which could provide more genetic evidence for the red tilapia strains maternal ancestry.
Geometrical Properties and Exact Solutions of Three (3+1)-Dimensional Nonlinear Evolution Equations in Mathematical Physics Using Different Expansion Methods
Authors: Shehata A. R. , Abu-Amra Safaa S. M.
Published: May 2019

In this article, A Variation of -Expansion Method and -Expansion Method have been applied to find the traveling wave solutions of the (3+1)-dimensional Zakhrov-Kuznetsov (ZK) equation, the (3+1)-dimensional Potential-YTSF Equation and the (3+1)-dimensional generalized Shallow water equation. The efficiency of these methods for finding the exact solutions have been demonstrated. As a result, some new exact traveling wave solutions are obtained which include solitary wave solutions. It is shown that the methods are effective and can be used for many other Nonlinear Evolution Equations (NLEEs) in mathematical physics.

In this article, A Variation of -Expansion Method and -Expansion Method have been applied to find the traveling wave solutions of the (3+1)-dimensional Zakhrov-Kuznetsov (ZK) equation, the (3+1)-dimensional Potential-YTSF Equation and the (3+1)-dimensional generalized Shallow water equation. The efficiency of these methods for finding the exact solutions have been demonstrated. As a result, some new exact traveling wave solutions are obtained which include solitary wave solutions. It is shown that the methods are effective and can be used for many other Nonlinear Evolution Equations (NLEEs) in mathematical physics.
Comparative Evaluation of Golden Proportion, Recurring Esthetic Dental Proportion and Golden Percentage in Himachal Demographic
Authors: Mahajan Vishwas , Nagpal Archana , Gupta Rajeev , Vaidya Sharad , Jabeen Farhat , Thakur Kusha
Published: May 2019

Aim: The purpose of this study was to comparatively evaluate the validity of Golden Proportion, Recurring Esthetic Dental (RED) proportion and Golden Percentage in maxillary anterior teeth in population of Himachal Pradesh.

Methods and Materials: Dentulous stone casts of maxillary arch were made of the subjects who met the inclusion criteria. Conditions for inclusion criteria included that the individuals:

1) should be of Himachali origin with agreeable smiles

2) have well aligned anterior dentition

3) should be between age group of 20-40 years

Total of 200 students representing Himachal Pradesh population were included. Measurements were done for the spaces in the grids using the digital caliper.

Results:

The Golden Proportion ratio of 1.3 and 1.4 were more commonly observed in 27.5% and 40% respectively than 1.618 which was observed in 5.5% under study of the population.

A Paired sample t-test showed there was no significant gender based difference in Lateral/Central incisor Red Proportion. (P-value>0.05) except for the Canine/Lateral Red Proportion. (P-value<0.05).

The Golden Percentage for males in central and lateral incisors and canine was 22.48%, 15.96% and 11.08% respectively. The mean value for females in central and lateral incisors and canine was 22.72%, 16.25% and 10.97% respectively.

Conclusions: Golden percentage could be used for aesthetic correction and was found to be more applicable in the population included in this study. Golden percentage could be used for aesthetic correction and are more applicable to natural dentition in the population of Himachal Pradesh.
Susceptibility Weighted Imaging in Acute Stroke with Co-morbids: Magnetic Resonance Imaging Protocol Revisited
Authors: Mubarak Fatima , Barakzai Muhammad Danish
Published: May 2019

Introduction: We aim to investigate ischemic penumbra using Diffusion weighted imaging- Susceptibility weighted imaging mismatch using DWI Alberta Stroke Program Early Computed tomography Stroke Score scoring in patients with multiple co morbid.

Methods: From January 2011 to December, 2017; 70 consecutive patients (50 men, 20 women; mean age 64.5; range 45-82 years) with acute infarct on Diffusion weighted imaging (DWI) were selected for the study. Stroke protocol performed including DWI and susceptibility weighted imaging (SWI) on first day and repeat within three days. All initial MR images were interpreted by one Neuroradiologist with more than ten years blind to the clinical findings of each patient. The definition of an acute infarct area was high signal intensity on DWI with dark signal intensity on Apparent diffusion weighted imaging (ADC). The infarct extent was scored using the Alberta Stroke Program Early CT Score (ASPECTS) system. Infarct growth was defined as any new or larger lesion on the second DWI.

For correlation with infarct growth, the same topographic system was used to record the extent of the Prominent vessel sign (PVS) on SWI.

Spearman’s rank correlation test was used to examine the correlations between PVS score and infarct growth score. Regression was computed, with P<0.05 considered significant.

Results: The study included 12 women and 10 men, (mean age 67.1 years).

MRI images were initially acquired as stroke protocol (mean 12 hours) in acute stage and the next MRI was done within 3 days after the acute stage.

9 patients had right sided and 13 patients had left sided MCA territory infarct, the mean DWI-ASPECTS score was 4.3 (range 0–9).  PVS was detected in 15 patients (mean score 4.1, range 0–10).

Out of 22 patients 9 patients showed no evolution in infarct however in 13 patients evolution was from (ASPECTS mean score 3.95, range 0–9; mean infarct growth score 7.4, range 0–10).

7 patients devoid of PVS in initial MRI, did not exhibited evolution of infarction. Of 15 patients with PVS on initial MRI, 13 (87%) had infarct growth. Correlation between the evolution in infarct size and PVS score was observed (r = 0.86, P<0.001).

Conclusion: PVS seen in infarcted territory is related to poor prognosis and this can be reliably used as a surrogate marker of oxygen extraction in penumbra.

SWI can predict tissue at risk and can be a replacement for perfusion scan in clinical scenerio of acute ischaemic infarct.
My family matters: Past and future life stories in adolescents with refugee background
Authors: Ramsgaard Stine Breum , Bohn Annette
Published: May 2019

Throughout adolescence, the ability to remember one's personal past and imagine one's personal future in the form of a coherent life story develops. This study explored adolescents' life stories in a group of adolescents with refugee background compared with community controls. In the refugee group, one or both parents had post‐traumatic stress disorder. Adolescents aged 10 to 18 years narrated their past and future life stories and generated cultural life scripts. Contrary to expectations, refugee youth narrated past life stories that were as coherent and positive as community controls'. Interestingly, the refugee group imagined positive future life stories that were more coherent than the control group's. The refugee group mentioned important life themes of family of origin, own feelings, achievements, and helping others. These themes were evident in both the cultural life script and the personal life stories, which might have contributed to more positive and coherent life stories in the refugee group.
Large‐Area Hexagonal Boron Nitride for Surface Enhanced Raman Spectroscopy
Authors: Chugh Dipankar , Jagadish Chennupati , Tan Hoe
Published: May 2019

Application of atomically thin layers of hexagonal boron nitride (hBN) for passivating gold and silver nanoparticles is investigated and its potential use is demonstrated through surface‐enhanced Raman spectroscopy (SERS). Silver nanoparticles readily oxidize in air, resulting in a significant decrease in its SERS activity. hBN is a novel 2D material, well‐known for its thermal and chemical stability. In this study, wafer‐scale hBN is grown using metal organic vapor phase epitaxy (MOVPE) and centimeter‐sized hBN layers are transferred on to silver nanoparticles. hBN acts as an impermeable barrier and protects silver nanoparticles from oxidation, even at elevated temperatures and help retain its SERS activity. Thermal stability of hBN coated Ag nanoparticles is studied in detail. Furthermore, wafer‐scale hBN layers grown using MOVPE are especially attractive, compared to mechanically exfoliated, micrometer sized flakes from bulk crystals, as it can be easily scaled‐up, shown here through design and fabrication of a SERS chip, conducive for droplet‐based analysis. Overall, large‐area hBN layers are well suited for practical applications and can help improve the shelf‐life and reusability of commercially available SERS substrates.
Vertically Aligned Piezoelectric Perovskite Nanowire Array on Flexible Conducting Substrate for Energy Harvesting Applications
Authors: Hyeon Dong Yeol , Park Kwi‐Il
Published: May 2019

Energy conversion based on vertically aligned piezoelectric nanowire (NW) arrays is of great interest because of their unusual properties originating from large surface area/high aspect ratio and excellent piezoelectric properties. Here, perovskite‐structured piezoelectric BaTiO3 NW arrays are vertically grown onto the flexible Ti substrates by a two‐step hydrothermal reaction to realize an aligned 1D nanostructures‐based flexible energy harvester. The BaTiO3 NW array‐based flexible piezoelectric energy harvester (PEH) successfully converts a maximum open‐circuit voltage of ≈15 V, a maximum short‐circuit current of ≈400 nA, and an effective power of ≈0.27 µW during repeated bending deformations. Under pressing with an external force of 49.57 N, the harvested output signals of the vertically aligned NW arrays‐based PEH are ≈20 V and ≈60 nA. Finite element analysis with multiphysics simulation supports the hypothesis of effective potential generation by the NW arrays‐based flexible PEH. These results can aid in the further development of high‐output 1D nanostructures‐based flexible PEHs.
Nonvolatile Rewritable Photomemory Arrays Based on Reversible Phase‐Change Perovskite for Optical Information Storage
Authors: Zou Chen , Zheng Jiajiu , Chang Cheng , Majumdar Arka , Lin Lih Y.
Published: May 2019

The high transmission speed of optical signals and their application in optical computation have created a growing demand for photon‐programmed memory devices. Rather than using electrical pulses to store data in one of two states, the photomemory (PM) devices exploit the optical stimulation to store the light information. In this work, the application of a nonvolatile rewritable PM array using the photochromic inorganic perovskite CsPbIBr2 grown by a vapor‐deposition process is demonstrated. Reversible phase transitions between orthorhombic (δ) and cubic (α) phases are achieved in CsPbIBr2 films through laser‐induced heat and moisture exposure. The PM pixels in an optically absorbing perovskite phase exhibit ≈50‐fold photoresponsivity as large as those in a transparent‐colored non‐perovskite phase. Storing optical data are achieved by heating pixels through a near‐infrared laser, while moisture exposure is used to erase the stored information. The nonvolatile PM array exhibits great write‐read‐erase cycle endurance and data retention capability without obvious performance degradation after storage in air for one week. This work demonstrates the promising application of vapor‐deposited inorganic perovskite for optical information storage and the unique potential of them for use in optical switches, tunable metasurfaces, and many other applications.
Tuberous sclerosis in a patient from Nigeria
Authors: Ekure Ekanem N. , Addissie Yonit A. , Sokunbi Ogochukwu Jidechukwu , Kruszka Paul , Muenke Maximilian , Adeyemo Adebowale A.
Published: May 2019

Tuberous sclerosis complex (TSC) is an autosomal dominant syndrome characterized by mostly benign tumors of the brain, skin, heart, kidney, and eye. Aberrations in the genes TSC1 and TSC2 which encode hamartin and tuberin, respectively, cause TSC. Because disease manifestations develop over time, early diagnosis and intervention are imperative for patients. TSC is not well described in patients from sub‐Saharan Africa or of black African ancestry. Here, we report on a 4‐year‐old Nigerian boy with skin lesions and cardiac anomalies associated with TSC. Furthermore, we note that in areas with limited resources for genetic diagnoses, the common skin manifestations found in TSC may be especially useful clinical markers.
Iron‐Catalyzed Ortho‐Selective C−H Alkylation of Aromatic Ketones with N‐Alkenylindoles and Partial Indolylation via 1,4‐Iron Migration
Authors: Kimura Naoki , Kochi Takuya , Kakiuchi Fumitoshi
Published: May 2019

An ortho‐selective C−H alkylation of aromatic ketones with N‐alkenylindoles proceeded in the presence of just a Fe(PMe3)4 catalyst. In addition, C−H indolylation products, which are considered to be formed via 1,4‐iron migration, were also observed as minor products.
Heteroaromatic Aldehydes with Unprecedented Catalytic Performance in Selective Radical Reactions: Synthesis of α‐Aminophosphonate Scaffolds
Authors: Aghahosseini Hamideh , Ramazani Ali , Taran Jafar , Ślepokura Katarzyna , Lis Tadeusz
Published: May 2019

Heterocyclic compounds have gained immense importance because of their low resonance energy and strong hydrogen‐bonding abilities, which provide good catalytic potential in a variety of organic transformations. Herein an unexpected metal‐free catalytic performance of heteroaromatic aldehydes has been reported. Accordingly, a unique method for the synthesis of new scaffolds of peptidomimetic compounds, α‐aminophosphonates has been developed, which was difficult using previous methods. The aerobic auto‐oxidation of heteroaromatic aldehydes acts as a driving force for the coupling of aromatic N‐benzylamines and hydrophosphoryl compounds according to a one‐pot, metal‐ and solvent‐free procedure. Heteroaromatic aldehydes, in addition to their individual ability to promote selective radical reactions through the auto‐oxidation process, can provide hydrogen bonding frameworks at different stages of the reaction and thereby change the reaction pathways and induce new activities and selectivities, which unveiled their other important catalytic features. We believe that this highlights the catalytic potential of heteroaromatic aldehydes, which may offer an opportunity to change the traditional harsh conditions necessary to generate alkyl radicals.
Introducing Perylene as a New Member to the Azaborine Family
Authors: Kaehler Tanja , Bolte Michael , Lerner Hans‐Wolfram , Wagner Matthias
Published: May 2019

Substitutional doping of perylene with two boron atoms at the 6b/12b positions and two oxygen or nitrogen atoms at the 1/7 positions has been achieved. The modular synthesis route developed for these bis‐BO‐ (3) and bis‐BN‐perylenes (5) starts from the readily accessible borinic acid derivative of the doubly brominated 9,10‐dihydro‐9,10‐diboraanthracene (DBA), 1,5‐Br2DBA(OH)2. A Stille‐type reaction first furnishes the alkynyl‐substituted species 1,5‐(RCC)2DBA(OH)2 (2), which undergo double ring closure to afford 3 via the gold‐catalyzed addition of the O−H bonds to the C≡C bonds. Treatment of 2 with MeN(SiMe3)2 leads to aminoborane intermediates 1,5‐(RCC)2DBA(N(H)Me)2, which can be ring‐closed to give 5 in a similar manner as in the case of 3. Different substituents R (such as Me, tBuPh) can be introduced at the 2/8 positions of the perylene core. The products obtained undergo reversible reduction and are efficient blue/turquoise emitters.
Copper‐Catalyzed Regio‐ and Enantioselective Addition of Silicon Grignard Reagents to Alkenes Activated by Azaaryl Groups
Authors: Mao Wenbin , Xue Weichao , Irran Elisabeth , Oestreich Martin
Published: May 2019

A new application of silicon Grignard reagents in C(sp3)−Si bond formation is reported. With the aid of BF3⋅OEt2, these silicon nucleophiles add across alkenes activated by various azaaryl groups under copper catalysis. An enantioselective version employing benzoxazole‐activated alkenes as substrates and a CuI‐josiphos complex as catalyst has been developed, forming the C(sp3)−Si bond with good to high enantiomeric ratios (up to 97:3). The method expands the toolbox for “conjugate addition” type C(sp3)−Si bond formation.