Most existing human mobility literature focuses on exterior characteristics of movements but neglects activities, the driving force that underlies human movements. In this research, we combine activity-based analysis with a movement-based approach to model the intra-urban human mobility observed from about 15 million check-in records during a yearlong period in Shanghai, China. The proposed mod...

BACKGROUND It is widely accepted that the passive dissemination of national clinical guidance has little or no impact on practice. OBJECTIVE To assess the impact in England of an Effective Health Care bulletin on childhood surgery for glue ear issued in 1992 and to understand the reasons for any change (or lack of change) in practice that ensued. METHOD Time series analysis of the rate of u...

This document specifies an application-level protocol (i.e., payload type) for hand-raising tools using the Real Time Protocol for Distributed Interactive Media (RTP/I). RTP/I defines a standardized framing for the transmission of application data and provides protocol mechanisms that are universally needed for the class of distributed interactive media. A hand-raising tool can support collabor...

Twitter and related social media feeds have become valuable data sources to many fields of research. Numerous researchers have thereby used social media posts for spatial analysis, since many of them contain explicit geographic locations. However, despite its widespread use within applied research, a thorough understanding of the underlying spatial characteristics of these data is still lacking...

OBJECTIVES The purpose of the study was to identify and understand social media usage behaviour of dentists in South Africa, in general and in particular as part of their marketing strategy and to consider the potential determinants associated with these behaviours. METHODS Dentists who are members of the South African Dental Association were requested to anonymously complete an online questi...

BACKGROUND Recruitment of women in the periconceptional period to clinical studies using traditional advertising through medical establishments is difficult and slow. Given the widespread use of the internet as a source for medical information and research, we analyze the impact of social media in the second phase of an ongoing randomized, open-label clinical trial among pregnant women. This st...

INTRODUCTION Delayed notification and lack of early information hinder timely hospital based activations in large scale multiple casualty events. We hypothesized that Twitter real-time data would produce a unique and reproducible signal within minutes of multiple casualty events and we investigated the timing of the signal compared with other hospital disaster notification mechanisms. METHODS...

Carotid intima-media thickness (CIMT) is frequently used as a measure of atherosclerosis in various research areas. Despite its frequent use, there are still no accepted standards for the most optimal ultrasound protocol for single or repeat CIMTassessments. Hence, choices of the CIMT ultrasound protocol to be used are generally based on experience and expert opinion rather than on solid eviden...

Social media has the potential to improve communication with patients with cystic fibrosis http://ow.ly/Zdyej.

Social media (SM) encompass a number of online and mobile resources that provide a forum for the generation, sharing, and discussion of individuals’ ideas and content.[1] Kaplan and Haenlein describe six types of SM: collaborative projects (eg, Wikipedia), blogs and microblogs (eg, Twitter), content communities (eg, YouTube), social networking sites (eg, Facebook, Google+), virtual game worlds ...