This paper presents a new single-wire autonomous current-share paralleling of current-mode-controlled dc power supplies. The proposed control scheme makes use of the nature of fast response of the inner current loop and the share bus injected signal to improve the response of the power supplies. It reduces the unbalance of current distribution during the transient state and avoids the fault ala...

We propose a stochastic optimization approach for the location and distribution problem of medical supplies to be used in disaster situations. We develop a robust decision support mechanism, which is serviceable under the wide variety of possible disaster types and magnitudes. In preparation for disasters, we develop a stochastic programming model to select the storage locations of medical supp...

We develop and evaluate time-series models of call volume to the emergency medical service of a major Canadian city. Our objective is to offer simple and effective models that could be used for realistic simulation of the system and for forecasting daily and hourly call volumes. Notable features of the analyzed time series are: a positive trend, daily, weekly, and yearly seasonal cycles, specia...

Previous terrorist attacks, system failures and natural disasters have revealed the problems that many States face in preparing for national civil contingencies. The diversity of critical infrastructures and the interconnections between different systems makes it difficult for planners to ‘think of everything’. For example, the loss of power distribution networks can disrupt rail and road trans...

background: scaling and corrosion are the two most important indexes in water quality evaluation. pollutants are released in water due to corrosion of pipelines. the aim of this study is to assess the scale formation and corrosion of drinking water supplies in ilam city (iran). methods: this research is a descriptive and cross-sectional study which is based on the 20 drinking water sources in i...

BACKGROUND When an influenza pandemic occurs most of the population is susceptible and attack rates can range as high as 40-50 %. The most important failure in pandemic planning is the lack of standards or guidelines regarding what it means to be 'prepared'. The aim of this study was to assess the preparedness of acute hospitals in the Republic of Ireland for an influenza pandemic from an infec...

Abstract—This paper proposes a mathematical model and examines the performance of an exact algorithm for a location– transportation problems in humanitarian relief. The model determines the number and location of distribution centers in a relief network, the amount of relief supplies to be stocked at each distribution center and the vehicles to take the supplies to meet the needs of disaster vi...

Aim: This research evaluated the effect of a nurse-facilitated intervention on elderly or medically frail community members’ level household emergency preparedness as measured in knowledge, actions taken, and supplies gathered. These members had access functional needs that must be accommodated during disasters to mitigate their increased risk injury, illness, death because disaster. With adequ...

Access to safe blood is critical in comprehensive emergency obstetric care and for reducing maternal mortality. Many countries have inadequate blood supplies, and this disproportionately affects women and children in need of life-saving blood transfusions. Although preventative measures aimed at reducing postpartum hemorrhage by treating underlying anemia and infectious diseases are critical, t...