فهرست مطالب اعظم بختیاری

The present study was a kind of exploratory mix designs (qualitative and quantitative) that aimed to design and validate the cognitive empowerment model of faculty members in blended learning environments. Statistical population of this qualitative research comprised all faculty members of Payame Noor Universities of Isfahan in 2017-2018 and 15 people were selected using snowball sampling method. The components of cognitive empowerment were identified by documentary and central coding method and they were prioritized using the Friedman test. Then, after designing the model, this model was validated formally and content by experts in two phases. Reliability of the questionnaire was also evaluated using SPSS.20 software.Cognitive empowerment, 5 indicators including career development, research knowledge, management, learning and teaching methods, job enrichment and 26 components were identified. The components of participation in activities, activities in a workshop with small groups, self-efficacy and independence had the highest priority and the components of curriculum planning, research skills and decision making had the least priority. The model was composed of management components, research knowledge, learning and teaching methods, professional development and job enrichment. The validity of the model was confirmed on the basis of the Kendall’s Coefficient of Concordance and agreement rate of the experts and its retest reliability was reported at 0.754. Considering that the final design model of the Delphi phases has been approved and agreed upon by experts, it can serve as a benchmark for further research in the field of cognitive empowerment of faculty members in blended learning environments.

Retinitis pigmentosa (RP) is an inherited retinal dystrophy caused by the loss of photoreceptors and characterized by retinal pigment deposits visible on fundus examination. Low red blood cell membrane fatty acid content e.g. docosahexaenoic acid (DHA) in retinitis pigmentosa may influence retinal function. The aim of this study was to evaluate red blood cell membrane fatty acid content and plasma lipid levels and determine their associated effects on the severity of disease. In a comparative cross-sectional study, 35 males and 16 females with RP (mean age= 35.7 years) were evaluated. Red blood cell membrane fatty acid content (DHA) and plasma lipid levels were measured as well as visual acuity and field. Both visual acuity and visual field were significantly associated with red blood cell membrane fatty acid content (DHA) (P<0.05). However, the plasma lipid levels, except of total cholesterol, were not associated with visual acuity and visual field of RP patients (NS). Current survey showed a significant association between severity of RP and fatty acid content (DHA).