BACKGROUND Polymer gel dosimeters combined with magnetic resonance imaging (MRI) can be used for dose verification of advanced radiation therapy techniques. However, the uncertainty of dose map measured by gel dosimeter should be known. The purpose of this study is to investigate the uncertainty related to calibration curve and MRI protocol for MAGIC (Methacrylic and Ascorbic acid in Gelatin In...

Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo describes the use of t...

Since wireless sensor networks (WSNs) have been designed to be deployed in an unsecured, public environment, secured communication is really vital for their wide-spread use. Among all of the communication protocols developed for WSN, the Security Protocols for Sensor Networks (SPINS) is exceptional, as it has been designed with security as a goal. SPINS is composed of two building blocks: Secur...

Indemnisation The internship is supported by the European grant ProS-ecure (ERC Starting Grant) and the ANR grant VIP (Programme JCJC). Context. Security protocols are distributed programs that aim at ensuring security properties, such as confidentiality, authentication or anonymity, by the means of cryptography. Such protocols are widely deployed, e.g., for electronic commerce on the Internet,...

Introduction Cardiac magnetic resonance (CMR) has rapidly become the imaging method of choice for the diagnosis of cardiovascular disease, and its clinical indications have expanded greatly in the last decade [1]. Although the majority of CMR examinations is still performed at a field strength of 1.5 Tesla, the growing availability of 3 Tesla scanners has resulted in an increasing number of CMR...

PURPOSE To investigate the feasibility of measuring myocardial T2 at 3 Tesla for assessment of tissue iron in thalassemia major and other iron overloaded patients. MATERIALS AND METHODS A single-breathhold electrocardiogram-triggered black-blood multi-echo spin-echo (MESE) sequence with a turbo factor of 2 was implemented at 3 Tesla (T). Myocardial and liver T2 values were measured with three...

This paper presents an integrated analytical and profile-based cross-architecture performance modeling tool to specifically provide inter-architecture performance prediction for Sparse Matrix-Vector Multiplication (SpMV) on NVIDIA GPU architectures. To design and construct the tool, we investigate the interarchitecture relative performance for multiple SpMV kernels. For a sparse matrix, based o...

This paper reports the discovery of a series computational social media accounts (Fanbots) on Twitter that may have played critical role in sustaining entrepreneurial narratives Tesla, electric-vehicle maker. From 2010 to 2020—a period trial, error, and eventual success for Tesla—these agents generated pro-firm tweets (Corporate Computational Propaganda, CCP), accounting more than 10% total act...

UK Biobank is a prospective cohort study with 500,000 participants aged 40 to 69. Recently an enhanced imaging study received funding. Cardiovascular magnetic resonance (CMR) will be part of a multi-organ, multi-modality imaging visit in 3-4 dedicated UK Biobank imaging centres that will acquire and store imaging data from 100,000 participants (subject to successful piloting). In each of UK Bio...