ABSTRACT
This paper develops an econometric price model with fundamental impacts for intraday electricity markets of 15-min contracts. A unique dataset of intradaily updated forecasts of renewable power generation is analysed. We use a threshold regression model to examine how 15-min intraday trading depends on the slope of the merit order curve. Our estimation results reveal strong evidence of mean reversion in the price formation mechanism of 15-min contracts. Additionally, prices of neighbouring contracts exhibit strong explanatory power and a positive impact on prices of a given contract. We observe an asymmetric effect of renewable forecast changes on intraday prices depending on the merit-order-curve slope. In general, renewable forecasts have a higher explanatory power at noon than in the morning and evening, but price information is the main driver of 15-min intraday trading. This article is part of the theme issue 'The mathematics of energy systems'.
ABSTRACT
INTRODUCTION: Klebsiella pneumoniae liver abscess syndrome (KLAS) is characterized by bacteraemia, liver abscesses and metastatic infection caused by a hypervirulent strain of Klebsiella pneumoniae, usually belonging to the capsular serotype K1 or K2. Initially, KLAS was described in Eastern Asia; recently isolated cases have been reported from different parts of the world. CASE PRESENTATION: We describe the case of a woman with KLAS including meningeal, ocular and cutaneous metastatic infection and organ dysfunctions (coagulation abnormalities, thrombocytopenia and increased creatinine level). The identification of a hypermucoviscous strain of Klebsiella pneumoniae was possible by culture from one of the cutaneous emboli and subsequently confirmed by blood cultures. The patient fully recovered after abscess drainage and prolonged antibiotic treatment. CONCLUSION: We have pointed out about the importance of sampling each septic focus in order to identify the aetiology of a disseminate infection.
