The Day of Epiphany is one of the seven principal celebrations of the church year, right up there with Christmas, Easter, Pentecost and All Saints’ Day, but because it rarely falls on a Sunday, it doesn’t get the same attention as those other holidays. The word “epiphany” means “to manifest” or "make known," and during this Epiphany season, all of our readings will, in some way, reveal the true...

We present a theoretical analysis of active learning with more realistic interactions with human oracles. Previous empirical studies have shown oracles abstaining on difficult queries until accumulating enough information to make label decisions. We formalize this phenomenon with an “oracle epiphany model” and analyze active learning query complexity under such oracles for both the realizable a...

There is interest in exploring hybrid OpenSHMEM + X programming models to extend the applicability of the OpenSHMEM interface to more hardware architectures. We present a hybrid OpenCL + OpenSHMEM programming model for device-level programming for architectures like the Adapteva Epiphany many-core RISC array processor. The Epiphany architecture comprises a 2D array of low-power RISC cores with ...

The Adapteva Epiphany MIMD architecture is a scalable, two-dimensional (2D) array of RISC cores with minimal uncore functionality connected with a fast 2D mesh network on a chip (NoC). We apply a threaded MPI programming model for image processing kernels including a 2D Fast Fourier Transform (FFT) with high-pass filter for edge detection; local operators for Gaussian image smoothing; and a Sob...

BACKGROUND The key to success of any root canal therapy is adequate obturation of the prepared root canal space. Root canal sealers are not dimensionally stable and might dissolve partially over a period of time. The objective of this in vitro study is to evaluate the push-out bond strength to intraradicular dentin of two endodontic obturation materials. MATERIAL AND METHODS Forty extracted s...

The low-power Adapteva Epiphany RISC array processor offers high computational energy-efficiency and parallel scalability. However, extracting performance with a standard parallel programming model remains a great challenge. We present an effective programming model for the Epiphany architecture basedon theMessagePassing Interface (MPI) standardadapted for coprocessoroffload.UsingMPIexploits th...

introduction: retreatment of endodontically treated teeth is a challenge that requires complete removal of the previous filling material. several techniques are indicated for this procedure. the present review tries to identify the most efficient method for extirpation of resilon (rs) root fillings and to compare the speed and efficacy of rs and gutta-percha (gp) root filling removal. methods a...

INTRODUCTION The aim of this study was to compare the effect of post space preparation with Gates Glidden drills or hand files on the sealing ability of gutta-percha or Resilon obturation materials. MATERIALS AND METHODS One-hundred and four single-rooted human teeth were instrumented and divided into four experimental groups (n=21 each) and two groups of positive and negative control (n=10)....