Hasil untuk "General works"

Yeliz Tunga, Berkan Celik, Kursat Cagiltay

Abstract Educational myths tend to be very popular among teachers worldwide, and they have the potential to mislead teachers in their instructional decisions and practices. Following a comprehensive and holistic approach, this study, firstly, aims to reveal the prevalence of educational myths among in-service teachers, the channels through which these myths disseminate among teachers, and their impact on teachers’ professional practices. Secondly, this study assesses the effectiveness of three distinct refutation text types (refutation-only, refutation with explanation, and refutation with anecdotal explanation) in altering teachers’ beliefs concerning educational myths. The study employed mixed method research with 518 primary and middle school teachers participating. Data were collected using surveys with close and open-ended questions. An experiment involving 132 teachers, divided into three groups (refutation-only, n = 41; refutation with anecdotal explanation, n = 45; and refutation with explanation, n = 46), was conducted to change teachers’ beliefs in educational myths. Results indicated that educational myths are common among teachers, with multiple intelligences, learning styles, and violent digital games being the most prevalent. The primary dissemination channels of myths are teachers’ undergraduate education. Teachers often consider educational myths in their lessons and other educational activities. The study also revealed that anecdotal interventions are more effective in dispelling myths. The significant takeaway from this study is that educational myths are commonly accepted by the teachers, and it is very difficult to change their beliefs after they were exposed to them. The study highlights the persistence of educational myths and the challenges in debunking them, suggesting implications for teacher training and evidence-based professional development.

Wei Wan, Hong Wu, Hui-Ling Hu

This qualitative study sought to explore how women entrepreneurs leverage the Internet to empower their entrepreneurial activities in the Chinese context. To this end, we first conducted semi-structured interviews with 30 women entrepreneurs, and then analyzed their transcripts by following the principles of thematic analysis from grounded theory method. After the three-phase coding procedure, we developed a conceptual model of Internet use of women entrepreneurs which were composed of Internet marketing, Internet purchasing, and Internet learning. The current study provides the first evidence for the multidimensional construct of Internet use with a sample of women entrepreneurs in China. A hypothesis concerning the relationship between Internet use and women entrepreneurial performance is proposed for future investigation. Implications for women entrepreneurs and policymakers are discussed.

Angélica Jiménez-Coronado, Oona Isabel Hernández-Palma, Jorge Luis Restrepo-Pimienta

El objetivo de esta investigación fue analizar el Objetivo de Desarrollo Sostenible 11 desde la Felicidad urbana y el emprendimiento con el propósito de identificar los desafíos que emergen para la política pública. Para ello, se aplicó una metodología cualitativa el análisis documental y la entrevista como técnicas de recolección de la información. En el análisis de las categorías estudiadas se identificaron elementos claves que permitieron encontrar los principales resultados; uno de ellos es que el plan de desarrollo de la ciudad de Barranquilla está alineado con los Objetivos de Desarrollo Sostenible (ODS) específicamente el objetivo 11 el cual ha sido trabajado en el desarrollo sostenible de la ciudad a través del mejoramiento de la infraestructura urbana, creación de nuevos empleos e ideas emprendedoras. A raíz de esto, se identificaron desafíos que presenta la política pública en materia de desarrollo sostenible en las ciudades.

Sinandja DIYANI, Issaka LONA

La présente étude porte sur l’analyse des risques climatiques pouvant compromettre la culture du maïs (Zea mays) au Nord Togo dans ce contexte de variabilité climatique afin de réduire la vulnérabilité des producteurs de maïs dans la région des Savanes et de la Kara au nord du Togo. La caractérisation des risques agro climatiques dans l’optique de stratégies d’adaptation sont faites sur la base des données climatique de 1981 à 2017. L’analyse est basée sur le caractère déterministe des risques à travers la détection des tendances et de la variabilité de la pluviosité puis des variations thermiques locales. Les résultats révèlent des risques de démarrage précoces et fin tardive de la saison pluvieuse. L’avènement des fortes pluies et des jours secs en début de saison (Avril-Mai-Juin) ont montrés un risque d’inondation, de baisse de la qualité pluviométrique et des risques de sécheresses en début de saison. Globalement, les hausses des températures et des extrêmes thermiques révèlent des risques stress hydrique dans les deux régions, accentuant ainsi le stress thermique, l’échec de la fécondation, l’augmentation des besoins en eau et le raccourcissement du cycle du maïs entrainant ainsi la baisse des rendements dans la majeure partie de la zone d’étude. Mots clés: Risque climatique, variabilité, stress, vulnérabilité, Savanes, Kara, Togo

Yang Li, Ningyi Dai, Wilfried G. J. H. M. Van Sark et al.

Chengying He, Tianqi Wang, Xinwen Liu et al.

The primary use of futures is hedging risk. Traders in the spot market can hedge certain risks through the futures market. With the development of the futures market, the arbitrage transactions around futures have attracted increasingly attention. The aim of this paper is to establish an innovative and unique pairs trading framework, and use it to test the effectiveness of China's futures market. The framework for pairs trading is based on cointegration test, Kalman filter and Hurst index filtering. We use the data of 47 commodities with relatively good liquidity in the Chinese commodity futures market. We apply the representative index of China's commodity futures market, ''Wenhua Commodity Index'' as the benchmark, to evaluate the performance of the strategy and compare it with the benchmark model. This study found that, according to the pairs trading framework, after considering transaction costs, the cumulative return in the sample reached 81%, the cumulative return out of the sample was 21%. It is worth noting that the out-of-sample maximum drawdown achieved excellent results of no more than 1%. In the same period, trading the Wenhua Commodity Index with a ''buy and hold'' strategy achieved a gain of 31%, but with maximum drawdown reached 15%. The values of our paper are, first it proves that Chinese commodity futures market is not a weak-form efficient market, because technical analysis based on machine learning could obtain excess returns. Second, this research combines the theory and practice of statistical arbitrage, which also provides guiding significance for investment practice.

Neda Azizi, Peyman Akhavan, Ali Ahsan et al.

The present study aims to extend our understanding of motivational factors that improve the knowledge sharing intention of employees thereby can lead to creating knowledge successfully. Specifically, we aim to extend previous knowledge management research to contribute to both knowledge sharing theory and knowledge creation process with consideration of motivational factors including socialization, externalization, combination and internalization. This study has used quantitative research methodology wherein the data have been collected from 405 students from various universities in Iran using a survey questionnaire. Structural equation modelling has been applied to test the hypotheses of the study. The findings of the study reveal that motivational factors positively influence knowledge sharing and knowledge creation. Results reveal that motivational factors tend to increase the usage of knowledge sharing methods, and consequently, they impact on the creation process of knowledge. Further, motivational factors act as a mediator between knowledge sharing and knowledge creation. This study has limitations that present opportunities for future research. First, the research context covered people from universities only, which limits the generalizability of findings. Second, we did not consider regional cultural differences, which could cause variations in people’ knowledge sharing intention. Future studies can build upon the research models to understand the influence of the cultural factors on other type of organisations. This research contributes to both knowledge sharing theory and knowledge creation process with consideration of motivational factors including socialization, externalization, combination and internalization. Thus, the study provides directions to managers to focus on cognitive social aspects (i.e., motivational factors) to encourage the people to share and create knowledge. To the best of authors’ knowledge, this study is an early study conducted to examine the influence of motivational factors on knowledge sharing and knowledge creation. This research provides valuable information and guidelines that will be helpful for the managers to consider the important issues during knowledge creation establishment in the universities and organizations which are directly involved with creating knowledge.

Aida Isabel Tavares, Pedro Lopes Ferreira

This essay aims to make a brief comparative analysis of the Southern European countries of Spain, Greece, Italy and Portugal with regard to the socio-economic and health effects caused by the SARS-CoV-2 pandemic and by the control and mitigation policies implemented by their respective governments. It presents a brief contextualization of the structural characteristics of these socio-economic effects and propagation routes of these effects of COVID‑19. It also describes some governmental steps toward mitigation along with control measures during and after the pandemic. The first-order effects can be reflected in an excess mortality rate; for the second-order effects the focus is on young people and non‑COVID people; and, finally, third-order effects refer to macroeconomic indicators, such as household consumption and public debt.

Xiaojing Qi, Jianyong Zheng, Fei Mei

The high-penetrated renewables enable flexible and versatile dispatchable resources in power systems. As the digitalization process improves with the help of information and communication technology (ICT), a real-time online control framework is essential to regulate such a low-inertia power system dominated by renewables. To enable control practices, a control-oriented model is developed linking load increments to frequency dynamics. Based on such a control-oriented model, a model predictive control (MPC)–based online feedback algorithm is well designed by the virtue of rapid data transmission enabled by digitalization. The MPC optimization is a convex quadratic programming, where an objective function that balances frequency deviations and load increments is formulated and operational constraints are integrated into a matrix-type inequality. In the end, the proposed MPC-based load-frequency control framework is illustrated by several case studies, where validations and analyses of constraints inside the model are also included.

Benedito Medrado, Jáder Ferreira Leite, Daniel Coelho et al.

Considerando a carência de estudos sobre a emergência do movimento homossexual em Pernambuco no início dos anos oitenta do século 20, objetivamos por meio das produções discursivas geradas pela mídia impressa: a) analisar a construção discursiva sobre “movimento político” na produção midiática sobre o Grupo de Atuação Homossexual (Gatho) em Pernambuco, no cenário da redemocratização; b) Mapear repertórios sobre homossexualidade na produção midiática sobre o Gatho e sua ação política; c) Identificar atores e atrizes, entre disputas e coalizões, na conformação das notícias sobre esse grupo. Os resultados apontam que o Gatho buscou se posicionar como sujeito político, confrontando esferas institucionais e abrindo campos de aliança com outros movimentos sociais, partido político e imprensa. Também agiu para a produção de novos repertórios de modo a combater discriminações em torno da homossexualidade, aportando um debate sobre a necessidade de garantia de direitos, historicamente negados à população LGBT.

Walid Al-Nuwaini, Hossein Nazri, Maysa Al-Salami

شكلت الرواية البوليسية في الآونة الأخيرة مصدر إلهام للكثير من الروائيين, حيث تعتمد الرواية البوليسية على ثلاثة عناصر هي : القاتل, والضحية, والمحقق. وتعتبر تلك الأقطاب العناصر الأساسية في تشكيل بؤرة النص الروائي البوليسي. عموماً فقد تناولت هذه الدراسة نشأة الرواية البوليسية, وحددت جذورها التاريخية, ثم بعد ذلك ناقشت تأخر ظهورها عند العرب بذكر مجموعة من الأسباب للعديد من النقاد والروائيين, واعتمدت على توضيح المفاهيم الخاصة بهذا الجنس الأدبي الحديث. واعتمد الباحث في هذه الدراسة على المنهج التاريخي في الكشف عن تاريخ الرواية البوليسية في الأدب العالمي من جانب, ومن جانب آخر الأدب العربي , ثم توصل البحث إلى نتيجة مفادها, ان الرواية البوليسية بخصائصها الفنية ظهرت على يد الكاتب الأمريكي إدغار الآن بو.

Jean-Michel Follin, Élisabeth Simonetto, Anthony Chalais

The most detailed geographic description of France’s whole 19th-century territory is the Napoleonic cadastre. It contains a wealth of information (e.g. cadastre lot structure, lot numbering, rivers and road shapes, toponymy, buildings…) which underpin most historical studies of land usage and transformation. We therefore decided to develop a semi-automatic toolchain able to vectorise, georeference and combine scanned old cadastre sheets in order to build a multi-epoch database describing land property. In this article, we focus on the automatic vectorisation of the parcels’ shapes and assess the respective merits of two methods we tested: the first based on the Probabilistic Hough Transform (PHT) and the second on the Line Segment Detector (LSD) algorithm. After explaining how we implemented these two methods, we present the results, which show that the LSD approach performs better on the oldest cadastre sheets.

Boaventura de Sousa Santos

Francesc Tarrats Bou

Desde su constitución, a mediados del siglo XIX, el Museo Arqueológico de Tarragona se ha erigido en un referente esencial para la conservación, el conocimiento y la transmisión de todo lo relativo a una rica y compleja realidad histórica –la romanidad– que alcanzó en Tárraco, la actual ciudad de Tarragona, un destacado y unánimemente reconocido nivel de expresividad. A lo largo de los años –y a pesar de las muchas vicisitudes vividas– la Institución ha evolucionado para cumplir con la máxima solvencia, en las sucesivas etapas, sus objetivos fundacionales y para liderar una vocación y unos compromisos académicos y sociales irrenunciables.

Leandro Jesus Costa, Ana Maria Viola de Sousa, Maurício Martins Alves

Este artigo tem como o objetivo destacar a importância da divulgação da possibilidade de parcelamento do ITCMD (Imposto Causa Mortis e Doações) no Inventário Extrajudicial, no Estado de São Paulo, para garantir a equidade e a celeridade, ampliando a eficácia da Lei Federal 11.441/2007, do Decreto Estadual nº 56.588/2010, e do Artigo 610 do Novo Código de Processo Civil. Defende que tal parcelamento atua desburocratizando o Poder Judiciário, incentivando as partes envolvidas a procurar cada vez menos o Judiciário. Com isso, espera-se uma maior procura para a regularização junto aos Tabelionatos de Notas, dando mais rapidez ao Inventario Extrajudicial.

Historical artefacts can act as distancing objects, encouraging neutral discussion around sensitive topics that involve personal decision-making. Infant feeding is an example of a sensitive topic where strong emotions associated with infrequently shared experiences often underlie present beliefs and values. An exhibition of historical artefacts designed to generate discussion around the topic of infant feeding was piloted at the Welsh National Eisteddfod 2015 as part of a qualitative development study. The study indicated that the exhibition was perceived as a safe space for discussion regardless of prior beliefs and experience, and that artefacts acted as effective prompts for reminiscence and reflection. Follow-up interviews identified areas of intergenerational change that impact on intergenerational support – changing hospital practices, expert advice and attitudes towards breastfeeding in public places. The exhibition indicated the potential of historical artefacts to facilitate intra- and intergenerational conversation around sensitive public health topics.

María Angustias Ortiz-Molina, Fernando José Sadio-Ramos

Recoge todos los contenidos del número de manera ordenada y con indicación de las páginas en que aparecen.

Yanuar Tri Kurniawan

On January 1st, 2006 flash flood disaster (in Indonesia is known as banjir bandang) occurred in Kaliputih River, Jember District of East Java Province. This disaster resulted in more than 80 people were killed and hundreds were injured. The disaster was caused by natural dam break. The natural dam was formed by landslide due to heavy rainfall. After the January 2006 disaster, new cracks and crevices were found in the upstream area of Kaliputih River. Based on this condition, it cannot be disregarded to avoid repetition of similar disaster in the future. Therefore, it is required to conduct mitigation efforts in order to anticipate similar disaster in the future. One of the mitigation efforts is modeling simulation of the past event. The understanding which is obtained from the simulation can be used as reference to arrange other mitigation efforts plan and action . Modeling simulation of the January 2006 flood was conducted by involving 1-D model of HEC-RAS version 4.1.0 software. Flood hydrograph was obtained by analyzing related hydrologic aspects using Nakayasu method. The natural dam model was interpreted from field observation and related references. Some assumptions related to study constraints were taken. Model calibration was conducted by repeating simulation using fixed discharge and parameter values in a certain range. The observations were carried out to the maximum water surface elevation and it was traced to the downstream river. Calibration model result showed that the height of natural dam significantly influence changes of water surface elevation at control point. Tracing of flood result in reconstruction of January 2006 flood showed the conformity with the real event. It was observed from the arrival time of flood at certain location. From obtained results, it can be concluded that simulation modeling gave the acceptable results.

Watrous H. Irons, Leon W. Cowan, Fred Reed et al.

W. Healy, W. Sheldon, S. Glueck et al.

Those who have read Dr. Sheldon's earlier works, Varieties of Human Physique and Varieties of Human Temperament, will be acquainted with his general approach to psychological problems. He aims at discovering correlations between physical characteristics and psychological qualities?a sort of neoKretschmerism, but with the addition of a rating scale which makes it possible to describe that majority of us who are neither this, or that, or the