Between 1972 and 1990, US electric utility companies cancelled orders for 117 nuclear power plants (NEI, 1996, pp. 1±6). The regulatory accounting methods adopted by utility rate setting commissions determined whether utilities could recover the losses on cancelled plants through higher rates. In e€ect, the choice of accounting methods determined how billions of dollars invested in cancelled nu...

We study a single-server queue, operating under the first-in-first-out (FIFO) service discipline, in which each customer independently abandons the queue if his service has not begun within a generally distributed amount of time. Under some mild conditions on the abandonment distribution, we identify a limiting heavy-traffic regime in which the resulting diffusion approximation for both the off...

Adequate follow-up and treatment of women with high-grade squamous intraepithelial lesion (HSIL) and cancer is key in reducing cervical cancer mortality. This research study aims to analyze the magnitude of abandonment in the follow-up and treatment process, as well as the reasons for this abandonment, in women with HSIL who received care in public health services in the province of Jujuy in 20...

BACKGROUND Routine data on the use of isoniazid preventive therapy (IPT) in children and adolescents are scarce in high tuberculosis (TB) burden countries. OBJECTIVE To describe the factors related to abandonment of IPT in children and adolescents with latent tuberculosis infection (LTBI) receiving routine care. METHODS Retrospective (2005-2009) descriptive study of 286 LTBI cases with indi...

This paper studies the M/M/s+M queue, i.e., the M/M/s queue with customer abandonment, also called the Erlang-A model, having independent and identically distributed customer abandon times with an exponential distribution (the +M), focusing on the case in which the arrival rate and the number of servers are large. The goal is to better understand the sensitivity of performance to changes in the...

    Background: Nursing shortage is an important and multifaceted challenge in the health systems and has reached a warning threshold. The factors associated with nursing shortage vary from country to country. Therefore, this study compared the causes of nursing shortage and suggested strategies to help resolve this concern both in Iran and in the world.    Methods: To conduct this systematic ...