The transformation towards a sustainable power system calls for new ways of operating the network. In that regard, electric vehicles (EVs) with their charging infrastructure qualify as flexible resource. This paper interconnects ancillary services and EV flexibility to help operators (SOs) providers understand role localize EV-chargers in system. First, focus is on SOs. manuscript reviews based...

In an effort to push for low-carbon transition, national governments and regulatory authorities are working define market structures legislative frameworks able effectively support the spreading of electricity production from renewables. To this purpose, opening Ancillary Services Markets (ASMs) Distributed Energy Resources (DERs) plays a key role. However, pricing schemes rules in place (e.g.,...

INTRODUCTION Laboratory and radiographic studies are often required by psychiatric services prior to admitting emergency patients who are otherwise deemed medically stable. Such testing may represent an unnecessary expense that prolongs emergency department stays without significantly improving care. This study determines the prevalence of such testing and how often it leads to changes in care....

BACKGROUND Most U.S. abortion patients are poor or low-income, yet most pay several hundred dollars out of pocket for these services. This study explores how women procure these funds. METHODS iPad-administered surveys were implemented among 639 women obtaining abortions at six geographically diverse healthcare facilities. Women provided information about insurance coverage, payment for servi...

Background Nursing care is a major portion of routine hospital care, especially when compared to more ancillary services such as labs, drugs, radiology, and other diagnostic and therapeutic procedures performed by doctors at the hospital. Although the nursing profession had been developed in Malaysia since the 1900s, the current hospital billing system does not reflect what nurses provide for t...

We perform a rare-event study on simulated power system in which grid-scale batteries provide both regulation and emergency frequency control ancillary services. Using model of random disturbances at each bus, we employ the skipping sampler, Markov Chain Monte Carlo algorithm for sampling, to build conditional distributions leading two kinds instability: excursions outside normal operating band...

PURPOSE State variation in inclusion of ancillary services in daily Medicaid nursing home reimbursement rates, versus covering ancillary costs outside of such rates, makes rate comparisons difficult. The purpose of this study is to adjust for inclusion of ancillaries when comparing Medicaid rates across states. DESIGN AND METHODS Data for 1987-1998 were drawn from a national survey of Medicai...

With higher penetration of renewable energy sources like wind energy, its utilization for the provision of ancillary services in the form of frequency and voltage regulation is imminent. This paper deals with the capability of wind energy to provide these services in a microgrid environment with the consideration of different generation mixes of wind and conventional energy. A novel hysteresis ...