We give a systematic development of the application of matrix norms to rapid mixing in spin systems. We show that rapid mixing of both random update Glauber dynamics and systematic scan Glauber dynamics occurs if any matrix norm of the associated dependency matrix is less than 1. We give improved analysis for the case in which the diagonal of the dependency matrix is 0 (as in heat bath dynamics...

A 62-y-old woman was found to have a lung mass and a brain mass. The brain mass was resected, and the histopathologic findings were suggestive of a gastrointestinal primary tumor with neuroendocrine features. She was referred for an 111In-octreotide SPECT/CT scan to evaluate for somatostatin-avid disease. After injection of 222 MBq (6 mCi) of 111In-octreotide, planar SPECT images (Fig. 1A) and ...

The Spatial Transformation of Sound Fields (STSF) technique involves a scan using an array of transducers over a (planar) surface close to the source under investigation. From cross spectra measured during the scan, a principal component representation of the sound field is extracted. Any power descriptor of the near field (intensity, sound pressure, etc.) can then be investigated by means of N...

The automatic reconstruction of roofs and buildings has been an important research topic during the last years. This paper elaborates on the automatic and semi-automatic reconstruction of roofs from aerial laser scan data. Two approaches are considered in detail. First, a program has been developed, which segments laser scan data into planar patches, labels them according to their adjacency, an...

Imaging dynamical processes at interfaces and on the nanoscale is of great importance throughout science technology. While light-optical imaging techniques often cannot provide necessary spatial resolution, electron-optical damage specimen cause dose-induced artefacts. Here, Optical Near-field Electron Microscopy (ONEM) proposed, an technique that combines non-invasive probing with light, a hig...

Single-shot echo planar imaging (EPI), which allows an image to be acquired using a single excitation pulse, is used widely for imaging the metabolism of hyperpolarized 13 C-labelled metabolites in vivo as the technique is rapid and minimizes the depletion of the hyperpolarized signal. However, EPI suffers from Nyquist ghosting, which normally is corrected for by acquiring a reference scan. In ...

Laser-beam powder bed fusion (LB-PBF) of metals is an additive manufacturing (AM) method currently being pursued in numerous industries. In this study, the effect scan strategy, laser spot size, and hatch distance on pore structure additively manufactured permeable stainless steel materials was systematically studied through analysis material permeability, size distribution, porosity, surface m...

Radiochromic film for spot-scanning QA provides high spatial resolution and efficiency gains from one-shot irradiation for multiple depths. However, calibration can be a tedious procedure which may limit widespread use. Moreover, since there may be an energy dependence, which manifests as a depth dependence, this may require additional measurements for each patient. We present a one-scan protoc...

Abstract The effects of embedding a midplane carbon nanotube (CNT) sheet on the impact damage resistance, tensile strength and propensity for interlaminar shear failure in fiber reinforced polymer matrix composite is experimentally evaluated. External internal impacted laminates were characterized via surface profilometry ultrasonic C‐scan, respectively. external dent areas depths greater witho...