We address the problem of testing whether a given dynamic graph is temporally connected, i.e. a temporal path (also called a journey) exists between all pairs of vertices. We consider a discrete version of the problem, where the topology is given as an evolving graph G = {G1, G2, ..., Gk} whose set of vertices is invariant and the set of (directed) edges varies over time. Two cases are studied,...

BACKGROUND The link between travel and the risk of venous thromboembolic disease (VTED) has been widely suspected. However, only cases or series of cases have been reported in the literature. STUDY OBJECTIVES By means of a case-control study, we sought to confirm this relationship and to determine the main features, if any, of these posttravel VTEDs. DESIGN The history, in particular the hi...

A substantial literature examines the social and environmental correlates of walking to school but less addresses walking outside the school commute. Using travel diary data from London, we examined social and environmental correlates of walking: to school; outside the school commute during term time; and during the summer and weekends. Living in a household without a car was associated with al...

Abstract. The tropospheric concentrations of nitrogen dioxide (NO2) and formaldehyde (HCHO) have high spatio-temporal variability, in situ observations these trace gases are still scarce, especially remote background areas. We made four similar circling journeys mobile multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements the Three Rivers' Source region over Tibetan Pl...

OBJECTIVE To determine the levels of sound to which infants are exposed during routine transport by ambulance, aircraft, and helicopter. DESIGN Sound levels during 38 consecutive journeys from a regional level III neonatal intensive care unit were recorded using a calibrated data logging sound meter (Quest 2900). The meter was set to record "A" weighted slow response integrated sound levels, ...

Design disciplines are increasingly using journeys as a tool that addresses multiple purposes. Also known Journey Maps, User Journey, Customer Experience or Service they represent the interaction of person with product service step-by-step. This compilation data reveals valuable insights for companies, organizations, decision-makers, managers, and service-owners to empathize their users, triang...

This paper presents the initial research for the development of a new travel aid to increase the independent mobility of blind and elderly travellers. The MoBIC travel aid consists of two interrelated components: the MoBIC Pre-Journey System (MoPS) to assist users in planning journeys, and the MoBIC Outdoor System (MoODS) to execute these plans by providing users with orientation and navigation...

What do you do to start reading the psychedelic explorers guide safe therapeutic and sacred journeys? Searching the book that you love to read first or find an interesting book that will make you want to read? Everybody has difference with their reason of reading a book. Actuary, reading habit must be from earlier. Many people may be love to read, but not a book. It's not fault. Someone will be...