1,728 research outputs found
Analysis of combined backward-forward extrusion
The upper bound approach is used to analyze combined backward-forward extrusion. The deformation region is divided into five zones separated by planer and cylindrical surfaces of velocity discontinuities. The internal power of deformaiton and shear and friction losses, are computed individually and summed. The pseudo-independent process parameter is the backward rate of flow with respect to which the total power of deformation is optimized. The optimal backward rate of flow is assumed to be the actual one
Silicone as a New Class of Organosilicon Reagent for the Palladium-Catalyzed Cross-Coupling Reaction
Automated eye disease classification method from anterior eye image using anatomical structure focused image classification technique
This paper presents an automated classification method of infective and
non-infective diseases from anterior eye images. Treatments for cases of
infective and non-infective diseases are different. Distinguishing them from
anterior eye images is important to decide a treatment plan. Ophthalmologists
distinguish them empirically. Quantitative classification of them based on
computer assistance is necessary. We propose an automated classification method
of anterior eye images into cases of infective or non-infective disease.
Anterior eye images have large variations of the eye position and brightness of
illumination. This makes the classification difficult. If we focus on the
cornea, positions of opacified areas in the corneas are different between cases
of the infective and non-infective diseases. Therefore, we solve the anterior
eye image classification task by using an object detection approach targeting
the cornea. This approach can be said as "anatomical structure focused image
classification". We use the YOLOv3 object detection method to detect corneas of
infective disease and corneas of non-infective disease. The detection result is
used to define a classification result of a image. In our experiments using
anterior eye images, 88.3% of images were correctly classified by the proposed
method.Comment: Accepted paper as a poster presentation at SPIE Medical Imaging 2020,
Houston, TX, US
La vallée de l’étrange
La vallée de la familiarité Il existe une fonction mathématique s’écrivant sous la forme y = f(x) pour laquelle la valeur de y augmente (ou diminue) de manière continue en fonction de la valeur de x. Par exemple, de la même manière que le bénéfice y augmente en fonction de l’intensification de x, la vitesse d’une voiture augmente à mesure que nous appuyons sur la pédale d’accélérateur. Ce type de relation est répandu et aisé à comprendre. Il s’applique en effet à la plupart des phénomènes, ce..
Search for the Infrared Emission Features from Deuterated Interstellar Polycyclic Aromatic Hydrocarbons
We report the results of a search for emission features from interstellar
deuterated polycyclic aromatic hydrocarbons (PAHs) in the 4um region with the
Infrared Camera (IRC) onboard AKARI. No significant excess emission is seen in
4.3-4.7um in the spectra toward the Orion Bar and M17 after the subtraction of
line emission from the ionized gas. A small excess of emission remains at
around 4.4 and 4.65um, but the ratio of their intensity to that of the band
emission from PAHs at 3.3-3.5um is estimated as 2-3%. This is an order of
magnitude smaller than the values previously reported and also those predicted
by the model of deuterium depletion onto PAHs. Since the subtraction of the
ionized gas emission introduces an uncertainty, the deuterated PAH features are
also searched for in the reflection nebula GN 18.14.0, which does not show
emission lines from ionized gas. We obtain a similar result that excess
emission in the 4um region, if present, is about 2% of the PAH band emission in
the 3um region. The present study does not find evidence for the presence of
the large amount of deuterated PAHs that the depletion model predicts. The
results are discussed in the context of deuterium depletion in the interstellar
medium.Comment: 24 pages, 6 figures, to appear in Ap
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