نتایج جستجو برای: تکنیک step back

تعداد نتایج: 441579  

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1383

چکیده ندارد.

Journal: :CoRR 2016
Tian Han Yang Lu Song-Chun Zhu Ying Nian Wu

The supervised learning of the discriminative convolutional neural network (ConvNet or CNN) is powered by back-propagation on the parameters. In this paper, we show that the unsupervised learning of a popular top-down generative ConvNet model with latent continuous factors can be accomplished by a learning algorithm that consists of alternatively performing back-propagation on both the latent f...

ژورنال: مجله دندانپزشکی 2006
حسینی, فرزانه , شیخ‌رضایی, محمد سعید ,

Background and Aim: Many methods and techniques of canal preparation work well in large and relatively straight canals. However, in severely curved canals, the complexity increases markedly, and techniques rendering good results in usual cases may be unsuccessful. The aim of this study was to compare the effect of five root canal preparation techniques on original canal anatomy in simulated sev...

Journal: :European Journal of Dentistry 2008
Alper Kustarci Neslihan Akdemir Seyda Herguner Siso Demet Altunbas

OBJECTIVES The purpose of this study was to compare in-vitro the amount of debris extruded apically from extracted teeth, using K3, Protaper rotary instruments and manual step-back technique. METHODS Forty five human single-rooted mandibular premolar teeth were randomly divided into 3 groups. The teeth in 3 groups were instrumented until reaching the working length with K3, Protaper rotary in...

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