نتایج جستجو برای: radial dose function
تعداد نتایج: 1533152 فیلتر نتایج به سال:
In this paper we apply normalized radial basis function networks to function learning and in nonparametric classification. A simple parameter learning technique is proposed and convergence and the rates of convergence of the empirically trained networks are studied theoretically and in computer experiments.
OBJECTIVES This study sought to determine the efficacy of patient pelvic lead shielding for the reduction of operator radiation exposure during cardiac catheterization via the radial access in comparison with the femoral access. BACKGROUND Cardiac catheterization via the radial access is associated with significantly increased radiation dose to the patient and the operator. Improvements in ra...
OBJECTIVES The authors sought to compare the radiation dose between radial and femoral access. BACKGROUND Small trials have shown an increase in the radiation dose with radial compared with femoral access, but many were performed during the operators' learning curve of radial access. METHODS Patients were randomized to radial or femoral access, as a part of the RIVAL (RadIal Vs. femorAL) tr...
Background and Aim: Coronary angiography (CA) is a diagnostic and therapeutic procedure for cardiac complexity, that has a high dose and high fluoroscopy time. The effective dose of eye lens as a radiosensitive organ in long-term exposure to CA must be evaluated. Materials and Methods: A cross-sectional study was performed with Siemens under-bed machine in Imam Hossein Hospital of Mehran, Ilam...
بهینه سازی طراحی ماشین های سنکرون قطب برجسته (هیدروژنراتورها) با الگوریتم ژنتیک استاندارد، الگوریتم ژنتیک یافته (که با تغییر در روش انتخاب استاندارد بدست آمده است ) و استراتژی تکاملی، در این پژوهش بررسی شده است . تابع هدف هزینه مواد است و مواردی مانند بازدهی و تنش مکانیکی یوغ رتور به همراه برخی از دیگر پارامترهای ماشین به عنوان محدودیت در نظر گرفته شده اند. متغیرهای بهینه سازی 12 عدد هستند و مس...
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