A graph G is called a pairwise compatibility graph (PCG) if there exists a positive edge weighted tree T and two non-negative real numbers dmin and dmax such that each leaf lu of T corresponds to a node u ∈ V and there is an edge (u, v) ∈ E if and only if dmin ≤ dT (lu, lv) ≤ dmax, where dT (lu, lv) is the sum of the weights of the edges on the unique path from lu to lv in T . In this paper we ...

A disparity gradient limit explains why the maximum amplitude of sinusoidal disparity gratings increases with decreasing disparity spatial frequency. It also explains why the largest disparity for binocular fusion (diplopia threshold) varies directly with stimulus element separation. Does a disparity gradient limit also apply to the detection of cyclopean shape? A previous study addressed this ...

The problem of efficiently sampling from a set of (undirected) graphs with a given degree sequence has many applications. One approach to this problem uses a simple Markov chain, which we call the switch chain, to perform the sampling. The switch chain is known to be rapidly mixing for regular degree sequences. We prove that the switch chain is rapidly mixing for any degree sequence with minimu...

BACKGROUND CT based brachytherapy allows 3-dimensional (3D) assessment of organs at risk (OAR) doses with dose volume histograms (DVHs). The purpose of this study was to compare computed tomography (CT) based volumetric calculations and International Commission on Radiation Units and Measurements (ICRU) reference-point estimates of radiation doses to the bladder and rectum in patients with carc...

Abstract. The impact of aerosols on clouds is a well-studied, although still poorly constrained, part the atmospheric system. New particle formation (NPF) thought to contribute 40 %–80 % global cloud droplet number concentration, it extremely difficult observe an air mass from NPF formation. and growth occurs frequently in Canadian Arctic summer atmosphere, only few studies have characterized s...

Introduction: Concurrent chemoradiotherapy (CRT) is a standard treatment method for patients with carcinoma of cervix. Despite admirable therapeutic results, acute hematologic toxicity (HT) is common with this regimen. Many studies evaluate the relationship between the bone marrow dosimetric parameters and the severity of HT and result shown that the low dose of bone marrow wou...

PURPOSE Accurate segmentation of lungs with severe interstitial lung disease (ILD) in thoracic computed tomography (CT) is an important and difficult task in the development of computer-aided diagnosis (CAD) systems. Therefore, we developed in this study a texture analysis-based method for accurate segmentation of lungs with severe ILD in multidetector CT scans. METHODS Our database consisted...

In this study, the effects of sneeze velocity profiles, including peak (PV), time (PVT), and duration (SDT), on dispersion respiratory droplets were studied experimentally numerically. Spatial–temporal datasets droplet exhaled from several subjects' mouths with different physiological characteristics obtained by particle image velocimetry. A direct relationship was found between forced vital ca...

BACKGROUND The purpose of this study was to determine the clinical and dosimetric factors associated with acute esophagitis (AE) in lung cancer patients treated with conformal radiotherapy (RT) in Turkey. MATERIALS AND METHODS In this retrospective review 104 lung cancer patients were examined. Esophagitis grades were verified weekly during treatment, and at 1 week, and 1 and 2 months afterwa...