فهرست مطالب vijay gupta
-
In the present article we discuss approximation properties of genuine Lupa¸s-Beta operators of integral type. We establish quantitative asymptotic formulae and a direct estimate in terms of Ditzian-Totik modulus of continuity. Finally we mention results on the weighted modulus of continuity for the genuine operators.Keywords: factorial polynomials, Beta basis function, direct estimates, weighted modulus of continuity, K, functionals}
-
In the present article, we propose the (p,q) variant of genuine Baskakov Durrmeyer operators. We obtain moments and establish some direct results, which include weighted approximation and results in terms of modulus of continuity of second order.Keywords: q)$, Beta function, $(p, q)$, Gamma function, Baskakov operators, Durrmeyer variant, Steklov mean, K, functional, direct estimates}
-
PurposeTo assess the reliability of school teachers for vision screening of younger school children and to study the pattern of vision problems.MethodsIn this cross‑sectional study, trained school teachers screened 5,938 school children aged 3 to 8 years for vision and ocular disorders. Children were cross screened by professionals to assess the reliability of the teachers in vision screening and detecting ocular disorders in these children. The pattern of visual acuity, ametropia and ocular disorders was studied.ResultsSensitivity and specificity of the vision screening by school teachers was 69.2% 95% CI: 66.8‑71.5%) and 95.3% (95% CI: 94.5‑95.8%), respectively. The positive predictive value was 83.5% (95% CI: 81.4‑85.6%) and negative predictive value was 89.8% (95% CI: 88.8‑90.6%). The kappa statistic was 0.68 (95% CI: 0.66‑0.7).ConclusionSchool teachers could effectively screen younger school children for vision assessment and ocular disorders.Keywords: Ametropia, Vision Screening, Visual Acuity, Younger School Children}
بدانید!
- در این صفحه نام مورد نظر در اسامی نویسندگان مقالات جستجو میشود. ممکن است نتایج شامل مطالب نویسندگان هم نام و حتی در رشتههای مختلف باشد.
- همه مقالات ترجمه فارسی یا انگلیسی ندارند پس ممکن است مقالاتی باشند که نام نویسنده مورد نظر شما به صورت معادل فارسی یا انگلیسی آن درج شده باشد. در صفحه جستجوی پیشرفته میتوانید همزمان نام فارسی و انگلیسی نویسنده را درج نمایید.
- در صورتی که میخواهید جستجو را با شرایط متفاوت تکرار کنید به صفحه جستجوی پیشرفته مطالب نشریات مراجعه کنید.