Ancillary services constitute the cornerstone of the power grid. They allow for an efficient system operation, provide resilience to uncertainties and establish safeguards against unprecedented events. Their importance is growing due to the rise of grid decentralisation and integration of intermittent, renewable power sources, which lead to more variability and uncertainty in the system. Today,...

This report is the outgrowth of the Atmospheres Panel meeting held in September 1991. The Panel was asked to either endorse or reject the CEES and IPCC research priorities for global change and to indicate which EOS candidate instruments, in the Panel's opinion, made the most significant contributions to answering the scientific questions associated with the CEES and IPCC priorities. After some...

We study providing ancillary service to the power grid by using the flexibility of HVAC (Heating, Ventilation, Air Conditioning) systems in commercial buildings. The building HVAC system’s thermal and power consumption models are constructed and key model parameters are estimated from measure data from Pugh Hall of University of Florida. We develop a method for optimal output tracking of a time...

Hepatocellular carcinoma (HCC) usually develops in the setting of chronic liver disease. In the adequate clinical context, both multiphasic contrast-enhanced CT and magnetic resonance imaging are non-invasive modalities that allow accurate diagnosis and staging of HCC, although the latter demonstrates greater sensitivity and specificity. Imaging criteria for HCC diagnosis rely on hemodynamic fe...

The neurological determination of death (NDD, brain death) is principally a clinical evaluation. However, ancillary testing is required when there are factors confounding the clinical determination or when it is impossible to complete the minimum clinical criteria. At the time of the 2003 Canadian Forum clarifying the criteria for brain death, 4-vessel cerebral angiography or radionuclide angio...

An investigation into an outbreak of food poisoning caused by Clostridium perfringens showed evidence of poor food handling by catering staff. The reasons behind this were explored by interviewing catering staff, analysing shifts and rotas, and looking at staff vacancies. Morale was low because of staff shortages resulting from a long term recruitment problem. In consequence staff were working ...