The study sought to determine the effectiveness of a training program based on the theory of cognitive flexibility in developing some habits of productive mind and preferred learning methods among female student teachers, by identifying the level of
habits of mind necessary for female student teachers in kindergartens and their preferred learning methods, and determining the procedures of the training program based on the theory of cognitive flexibility. To study its effectiveness in developing some habits of the productive mind and to know the percentage of the contribution of the habits of the productive mind to their preferred learning methods, so the study followed the quasi-experimental approach by designing two equal groups (control and experimental), by preparing a scale of the sixteen habits of the productive mind according to Costa & Kallick’s list. (2009) and a measure of productive mind habits necessary for female kindergarten students, and applying Felder and Silverman’s preferred learning styles scale (Index of learning style, 1999), on a purposive sample consisting of (46) female kindergarten students from the third year because they are in the intermediate learning stage according to the theory. Cognitive flexibility, as the sample represents 20% of the research population, and the results of the study revealed a low level of six habits of the productive mind in the sample: perseverance, control of recklessness, flexibility of thinking, creativity, continuous learning, and striving for accuracy. The sample’s learning preferences also varied between... Methods of processing, perception, input and thinking. The results showed the effectiveness of the training program based on the theory of cognitive flexibility in developing the necessary productive mind habits for kindergarten students. The results also revealed the contribution of productive mind habits to preferences for learning methods, as the habits of the productive mind individually predict preferred learning methods in proportion. It ranges from 31% to 64% in the post-measurement, and the six habits of the productive mind contribute together over time, as they predict preferred learning methods by rates ranging from 18% to 63.8%, with the exception of the processing style, of which the creativity habit predicted 34%. Some Recommendations in light of these results.
This work aims to find approximate relationships to calculate the static durability of ball valve disc valves, based on material resistance and flexibility theory. Three groups were obtained, and these groups represent three mathematical charts, each
of which corresponds to specific relationships obtained to calculate the stresses generated in the dish.
In this search, we have calculated thetransverse component of energy distortion in
elasticity wave modes of quantum liquid, by using Landau's theory in Fermi liquid taken
in consideration the effect of transverse component of an external disturbanc
e on the
liquid. We calculated the current density related to this component, and the stress tensor
component according with this state.In our search we have been considered the
temperature is low enough since the relation is true, where is the Fermi
temperature.
We have compared the response of the liquid, for transverse componentof the
external disturbance, with its response for longitudinal one in same conditions, by studding
the transverse and longitudinal shear modulus (which equivalent these responses) as
functions of the frequency and wave vector of the external disturbance. We have
found in general that these responses are different, but they become equal in particular
case , where the velocity on Fermi surface, and in this case the
viscoelastic model hypotheses become true.
حاولنا في هذا الكتاب أن نعرض العلاقات الأساسية لنظرية المرونة وكيفية اشتقاقها وبعض المسائل البسيطة التي تم حلها ومقارنة نتائج هذه الحلول مع نتائج مقاومة المواد آملين أن يكون هذا الكتاب عوناً لأبنائنا الطلبة وزملائنا المهندسين راجين أن يجدوا فيه الفائدة العلمية المبتغاة
