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Start Over Author "Ghanizadeh, A." Publisher elsevier bv
280 results on '"Ghanizadeh, A."'

40. Flujo continuo y mejores resultados personales en la educación superior: combinación de métodos

Author

Afsaneh Ghanizadeh and Safoura Jahedizadeh

Subjects
Developmental and Educational Psychology, Education
Abstract

Resumen El presente estudio se centra en dos nuevos conceptos surgidos en psicologia educativa, a saber, los objetivos sobre mejores resultados personales (PB, por sus siglas en ingles) y el flujo continuo (SF, por sus siglas en ingles). Es decir, el presente estudio ahonda en los PB y el SF de los estudiantes de ingles como lengua extranjera (EFL, por sus siglas en ingles) encontrando los flujos continuos mas importantes y explorando la interaccion dinamica entre los PB y el SF en dos fases, cuantitativa y cualitativa. Para ello, se ha recurrido a las versiones web persas del Cuestionario sobre Mejores Resultados Personales (Martin, 2006) y de la escala de disposicion de DMC (Muir, 2016) con el fin de estudiar el nexo entre los PB y el SF de los estudiantes. Esto se realiza con los Modelos de Ecuaciones Estructurales (SEM, por sus siglas en ingles) en la fase cuantitativa y el analisis de las respuestas de los estudiantes a los items abiertos del cuestionario DMC en la fase cualitativa del estudio. Los resultados demuestran que los PB de los estudiantes preveian su SF. Se analizan los casos mas significativos en la fase cualitativa, asi como las repercusiones y recomendaciones pedagogicas.

Published
2021

41. Sustained flow and personal best in higher education: A mixed-methods approach

Author

Safoura Jahedizadeh and Afsaneh Ghanizadeh

Subjects
050101 languages & linguistics, Higher education, business.industry, 05 social sciences, 050301 education, Educational psychology, English as a foreign language, General Medicine, Disposition, language.human_language, Structural equation modeling, Scale (social sciences), Mathematics education, language, 0501 psychology and cognitive sciences, business, Psychology, 0503 education, Persian
Abstract

The focus of the present study is on two newly-born concepts in educational psychology, i.e., personal best goals (PB) and sustained flow (SF). In other words, the present study delved into English as a foreign language (EFL) students’ PB and SF by finding the most crucial sustained flows, and exploring the dynamic interplay between PB and SF in two quantitative and qualitative phases. To do so, the Persian web-based versions of the Personal Best Questionnaire (Martin, 2006) and the DMC Disposition Scale (Muir, 2016) were utilized to explore the nexus between students’ PB and SF. This is accomplished by Structural Equation Modeling (SEM) in the quantitative phase and analyzing students’ responses on open-ended items of the DMC questionnaire as the qualitative phase of the study. The results demonstrated that students’ PBs predicted their SF. The most significant cases in the qualitative phase as well as pedagogical implications and suggestions are discussed.

Published
2021

42. Wetting dynamics of nanoliter water droplets in nanoporous media

Author

Viola I. Birss, Christopher R. Clarkson, Marwa Atwa, Chris Debuhr, Amin Ghanizadeh, and Bin Pan

Subjects
Materials science, Capillary condensation, Nanoporous, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Biomaterials, Contact angle, Colloid and Surface Chemistry, Chemical engineering, Imbibition, Wetting, 0210 nano-technology, Porous medium, Environmental scanning electron microscope, Nanoscopic scale
Abstract

Hypothesis The Lucas-Washburn (L-W) equation is the classical theory to describe the dynamics of spontaneous imbibition in single micro-channels and micro-scale porous media. However, for nanoliter droplets imbibition in nanoporous media, the L-W equation may not be suitable, due to the nanoscale liquid-solid interactions, e.g., contact line pinning and capillary condensation. In addition, for an intrinsically hydrophobic nanoporous substrate, spontaneous imbibition of a nanoliter droplet is hypothesized to occur if capillary condensation had occurred internally already. Experiments A nanoporous carbon scaffold was synthesized and used as a model nanoporous medium. A recently-developed micro-injection technique was used to generate a series of nanoliter water droplets (2.8–34 nL); the entire wetting dynamics (i.e., apparent contact angle and droplet volume as a function of time) were observed inside an environmental scanning electron microscope. Findings The L-W equation does not describe the wetting dynamics of nanoliter water droplets in nanoporous media. A new theoretical model is developed to characterize the corresponding dynamics. It is demonstrated that, even for an intrinsically hydrophobic nanoporous substrate, spontaneous imbibition of a nanoliter droplet can occur if capillary condensation had occurred internally already.

Published
2021

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