OBJECTIVE Lung volume reduction surgery (LVRS) in well-selected patients with severe emphysema results in postoperative improvement in symptoms and pulmonary function. Experience with LVRS suggests that predicted postoperative FEV(1.0) may be underestimated after lobectomy in patients with lung cancer and emphysema. As most of the patients with lung cancer have more or less emphysematous change...

Predictive Maintenance (PrM) exploits the estimation of the equipment Residual Useful Life (RUL) to identify the optimal time for carrying out the next maintenance action. Particle Filtering (PF) is widely used as prognostic tool in support of PrM, by reason of its capability of robustly estimating the equipment RUL without requiring strict modeling hypotheses. However, a precise estimate of th...

Address for correspondence: Mariusz Łochowski MD, Department of Thoracic Surgery, Medical University of Lodz, Memorial Copernicus Hospital, 62 Pabianicka St, 93-513 Lodz, Poland, phone: +48 602 776 887, e-mail: [email protected] Received: 24.11.2016, accepted: 30.12.2017. A 62-year-old man, a smoker, was admitted to our department with a history of cough, weight loss (5 kg per 3 months) and fever. T...

In this paper we consider the optimal decomposition of Bayesian networks. More concretely, we examine { empirically {, the applicability of genetic algorithms to the problem of the triangulation of moral graphs. This problem constitutes the only di cult step in the evidence propagation algorithm of Lauritzen and Spiegelhalter (1988) and is known to be NP-hard (Wen, 1991). We carry out experimen...

This paper presents a similarity-based approach for the prediction of the Remaining Useful Life (RUL) of sea water filters placed upstream the heat exchangers of a nuclear reactor condenser. The prognostic approach is developed considering a library of reference degradation trajectories containing parameter observations taken from a set of similar equipments until their failures. The prediction...

Accurate prediction of the remaining useful life (RUL) of lithium-ion batteries is important for battery management systems. Traditional empirical data-driven approaches for RUL prediction usually require multidimensional physical characteristics including the current, voltage, usage duration, battery temperature, and ambient temperature. From a capacity fading analysis of lithium-ion batteries...

Lung torsion is a very rare event that has been reported in only 9 cases in the pediatric literature but has not yet been reported in Korean infants. We present a case of lung torsion after tracheoesophageal fistula repair in an infant. Bloody secretion from the endotracheal tube and chest radiographs and computed tomographic scan results indicated lung torsion. Emergency exploration indicated ...

This paper presents a Matlab-based tutorial for model-based prognostics, which combines a physical model with observed data to identify model parameters, from which the remaining useful life (RUL) can be predicted. Among many model-based prognostics algorithms, the particle filter is used in this tutorial for parameter estimation of damage or a degradation model. The tutorial is presented using...