OBJECTIVES To examine and test the possible association between boarding time and stroke patients` outcome. METHODS This study is a retrospective review of stroke patients presenting to the Emergency Department (ED) of King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia from 2007-2010. We excluded thrombolysis cases and those deemed critically ill. We collected time of stroke onset, ...

Despite the availability of thrombolytic and endovascular therapy for acute ischemic stroke, many patients are ineligible due to delayed hospital arrival. The identification of factors related to either early or delayed hospital arrival may reveal potential targets of intervention to reduce prehospital delay and improve access to time-critical thrombolysis and clot retrieval therapy. Here, we h...

Background The aim of the study was to evaluate the occurrence, duration and impact of time delays to primary percutaneous coronary intervention (pPCI) in ST-segment elevation myocardial infarction (STEMI). Methods A total of 357 consecutive STEMI patients enrolled in the prospective Special Program University Medicine ACS (SPUM-ACS) cohort were included. In order to identify the causes behin...

In the study of the joint estimation of time-frequency signature and direction of arrival (DOA) for multicomponent chirp signals, an estimation method based on spatial time-frequency distributions (STFDs) is proposed in this paper. Firstly, array signal model for multicomponent chirp signals is presented and then array processing is applied in time-frequency analysis to mitigate cross-terms. Ac...

OBJECTIVE To investigate delays in the presentation to hospital and evaluation of patients with suspected stroke. DESIGN Multicentre prospective observational study. SETTING 22 hospitals in the United Kingdom and Dublin. PARTICIPANTS 739 patients with suspected stroke presenting to hospital. MAIN OUTCOME MEASURES Time from onset of stroke symptoms to arrival at hospital, and time from a...

due to increasing growth of air traffic, it is very important to have a reliable air traffic control system. usually secondary surveillance radar systems are employed for this task. in this paper, a new approach is presented to identify interrogators location of this system. the proposed method works passively and uses just a single receiver. this goal has been reached using angle and time diff...

Reducing time from symptom onset to reperfusion therapy decreases infarct size and improves survival in patients with ST-elevation myocardial infarction (STEMI). National quality improvement initiatives, including the Door-toBalloon (D2B) Quality Alliance, have successfully disseminated evidence-based strategies to reduce door-to-balloon time.1,2 Many hospital systems have achieved the targeted...

To probe sensitivity to the time structure of ongoing sound sequences, we measured MEG responses, in human listeners, to the offset of long tone-pip sequences containing various forms of temporal regularity. If listeners learn sequence temporal properties and form expectancies about the arrival time of an upcoming tone, sequence offset should be detectable as soon as an expected tone fails to a...

The localization of robots is a main problem to solve to make the robots navigate autonomously. This paper introduces an embedded indoor localization system for mobile robot. The system consists of a localization sensor that computes location of itself and infrared landmarks that are wirelessly controlled by the localization sensor. The localization sensor which is combined with an image sensor...