A Vessel Traffic Service (VTS) plays a central role in maritime traffic safety. Regulations are given by the International Maritime Organization (IMO) and Guidelines Association of Marine Aids to Navigation Lighthouse Authorities (IALA). Accordingly, VTS facilities utilize communication sensor technologies such as an Automatic Identification System (AIS), radar, radio others. Furthermore, opera...

The recent maiden voyage of the Yara Birkeland witnessed yet another development in autonomy that is transforming maritime sector. Marine autonomous surface ships (MASS) are claimed to bring many opportunities society at large, not least terms operational efficiency and safety crew, fewer emissions, greener shipping. On assumption MASS will prove safe enough ply our seas oceans, this article in...

The performance of current HMM-based automatic speech recognition (ASR) systems degrade significantly in real-world applications where there exist mismatches between training and testing conditions caused by factors such as mismatched signal capturing and transmission channels and additive environmental noises. Among many approaches proposed previously to cope with the above robust ASR problem,...

In this paper we study model parameter compensation methods for noise-robust speech recognition based on CDHMM. First, we propose a modified PMC method where adjustment term in the model parameter adaptation is varied depending on mixture components of HMM to obtain more reliable modeling. A statedependent association factor that controls the average parameter variability of Gaussian mixtures a...

Speech recognition systems need to operate in a wide range of conditions. Thus they should be robust to extrinsic variability caused by various acoustic factors, for example speaker differences, transmission channel and background noise. For many scenarios, multiple factors simultaneously impact the underlying “clean” speech signal. This paper examines techniques to handle both speaker and back...

Vector Taylor series (VTS)-based noise suppression usually employs a single Gaussian distribution for the noise model. However, it is insufficient for non-stationary noise which has a multipeak distribution. It is very complex to estimate multi-peak distribution of the noise, when we deal with the noise as random variables or hidden variables. To solve these problems, we investigate a way of es...

OBJECTIVE To investigate the differences in breathing pattern and effort in infants at birth who failed or succeeded on continuous positive airway pressure (CPAP) during the first 48 hours after birth. METHODS Respiratory function recordings of 32 preterm infants were reviewed of which 15 infants with a gestational age of 28.6 (0.7) weeks failed CPAP and 17 infants with a GA of 30.1 (0.4) wee...

To validate the accuracy of catheter endocardial mapping to localize the origin of ventricular tachycardia (VT), we compared cathether endocardial mapping with intraoperative epicardial and endocardial mapping of 24 morphologically distinct VTs in 18 patients undergoing surgery. Twelve had VT with left bundle branch block morphology and 12 had VT with right bundle branch block morphology. Cathe...

In this paper we present the Virtual Topology Service (VTS), a new approach to provide interdomain services taking into account QoS and Traffic Engineering (TE) constraints. It is known that in these days the provisioning of end-to-end interdomain connections does not consider any type of QoS due to limitations of the BGP routing protocol. At the same time, many extensions have been proposed to...

BACKGROUND Diagnosis of bundle-branch reentry ventricular tachycardia (BBR-VT) by the standard approach is challenging, and this may lead to nonrecognition of this tachycardia mechanism. Because the postpacing interval (PPI) after entrainment has been correlated with the distance from the pacing site to the reentrant circuit, BBR-VT entrainment by pacing from the right ventricular apex (RVA) sh...