determination of pre-hospital delay time of patients with acute myocardial infarction and seeking ways of speeding up the time for reperfusion is an important factor to lower mortality in these patients. this is a cross-sectional study to determine pre-hospital delay time, its components, and related causes and conditions, obtained in 375 patients with prolonged chest pain referred to four hosp...

This paper proposes a finite time chaos synchronization approach for the secure communication of satellite imaging. To this end, chaotic oscillators are considered in both transmitter and receiver ends to generate encryption/decryption keys. mitigate non-negligible channel time-delay between transmitter, we propose robust controller design. The proposed is designed based on Lyapunov stability t...

Digital libraries involve various types of data like text, audio , images and video. The data objects are typically very large and of the order of hundreds and thousands of kilobytes. In a digital library, these data objects are distributed in a wide area network. Retrieving large data objects in a wide area network has a high response time. We have conducted experiments to measure the communic...

Load sharing among distributed generation systems (DGS) is one of the most important topics in wireless-enabled smart microgrids, where a set of power inverters at different geographical locations work coordinately and collaboratively through wireless networks to meet the load requirement. Parallel power inverters operated in distributed generation systems rely on the underlying wireless commun...

OBJECTIVES/HYPOTHESIS To understand the leading causes for process errors and delays in the otolaryngology operating room and recognize the impact of process errors and delays on patient safety, operating room resources and hospital costs. STUDY DESIGN Prospective, observational study. METHODS A 4-week study was conducted during 1 calendar month in 2012, evaluating 23 elective otolaryngolog...

It is known that task scheduling problem of an intree with unit time tasks and unit time communication delays onto a limited number of processors is NP-hard. In this paper, we show that such a problem is approximable within a factor of 3 if we assume a complete k-ary intree with at most (k − 1) constant communication delay. Also we prove that the problem is approximable within a factor of 2 if ...

This article proposes a quantitative approach in considering the effect of inter-vehicle communication with respect to safety and congestion improvement. For enhancing safety by reducing delay time for safe braking for individual vehicles, long distance inter-vehicle communication (LDIVC) is proposed. An equation is developed for calculating delay time from a micro view. For alleviating congest...

In this report we present an overarching framework for inter-robot information transfer schemes in Multi-Centralized Cooperative Localization (MC-CL) under asynchronous communication, i.e., when the communication graph associated with the mobile robot network is time-varying and intermittently disconnected. Specifically, two information transfer schemes, that differ based on their communication...

It is known that distributed software development is risker and more challenging than collocated software development. Previous research has suggested that there are several factors that cause delay in distributed development including cultural differences, lacking common ground, communication and coordination overhead [4]. We use data collection forms and interviews to gather data from a cours...