Excessive imaging dose from repeated scans and poor image quality mainly due to scatter contamination are the two bottlenecks of cone-beam CT (CBCT) imaging. Compressed sensing (CS) reconstruction algorithms show promises in recovering faithful signals from low-dose projection data but do not serve well the needs of accurate CBCT imaging if effective scatter correction is not in place. Scatter ...

Introduction: The key characteristics of positron emission tomography (PET) are its quantitative capability and its sensitivity, which allow the in vivo imaging of biochemical interactions with small amounts of tracer concentrations. Therefore, accurate quantification is important. However, it can be sensitive to several physical factors. The aim of this investigation is the assessment of the e...

We present the snapshot distance method (SDM), a modern incarnation of proposed technique for estimating to Type Ia supernova (SN Ia) from minimal observations. Our method, which has become possible owing recent work in application deep learning SN spectra (we use deepSIP package), allows us estimate an single optical spectrum and epoch $2+$ passband photometry -- one night's worth observations...

The evolutionary approach called scatter search is originated from strategies for creating composite decision rules and surrogate constraints. Recent studies demonstrate the practical advantages of these approaches. Scatter search method have recently been investigated optimization technique and alternative of the other Meta heuristic methods. The scatter search is an evolutionary search method...

Observing a telluric standard star for correcting the absorption lines of spectrum will take significant amount precious telescope time, especially in long-term spectral monitoring project. Beyond that, it's difficult to select suitable near both time and airmass scientific object. In this paper, we present method by combining advantages long slit spectroscopy. By rotating slit, observed object...

If an object is very small in size compared with the wavelength of light, it does not scatter light efficiently. It is hence difficult to detect a very small object with light. We show using analytic theory as well as full wave numerical calculation that the effective polarizability of a small cylinder can be greatly enhanced by coupling it with a superlens type metamaterial slab. This kind of ...

Purpose: The purpose of this study was to assess attention problems and intratest scatter (variability) of responses to standardized tests of expressive language by preschool-age children who do (CWS) and do not stutter (CWNS). Method: Participants were 40 preschool-age CWS (30 males) and 46 CWNS (32 males). Between-group comparisons of attention were made using attention subscales of the Child...

We analyze the variability in accretion-related emission lines for 40 Classical T Tauri stars to probe the extent of accretion variations in young stellar objects. Our analysis is based on multi-epoch highresolution spectra for young stars in Taurus-Auriga and Chamaeleon I. For all stars, we obtain typically four spectra, covering timescales from hours to months. As proxies for the accretion ra...

In this paper we present a semi-supervised sub-manifold discriminant analysis algorithm. To separate each sub-manifold constructed by each class, we define the within-manifold scatter, between-manifold scatter and total-manifold scatter matrices. The scatter matrices are robust to outlier and diverse-density clusters. Kernelization and direct non-linear embedding are also developed. Experimenta...