We propose a unified framework for representing and processing images using a feature space related to local similarity. We choose the multiscale and versatile local jet feature space to represent the visual data. This feature space may be reduced by vector quantisation and/or be represented by data structures enabling efficient nearest neighbours search (e.g. kd-trees). We show the interest of...

Diagnoses of circulations in the vertical plane provide valuable insights into aspects of the dynamics of the climate system. Dynamical theories based on geostrophic balance have proved useful in deriving diagnostic equations for these circulations. For example, semi-geostrophic theory gives rise to the Sawyer-Eliassen equation (SEE) that predicts, among other things, circulations around mid-la...

Surface winds along the subtropical west coast of South America are characterized by quasi-weekly occurrences low-level jet events. These short lived but intense wind events impact coastal ocean environment. Hence, identifying long-term trends in (CLLJ) is essential for understanding changes marine ecosystems. Here we use ERA5 reanalysis (1979–2019) and an objective algorithm to track anticyclo...

Abstract The Turkana low-level jet stream (TJ) is important to climatic conditions over northern Kenya and East Africa. representation of the TJ in climate models varies due interaction with channel that influenced by model resolution influences regional climate. This study compares features CMIP6 AMIP simulations ERA5. Models reveal climatological wind speeds match those reanalysis from ERA5 a...

abstract background: transtracheal jet ventilation is an alternative ventilatory approach in airway surgery. the purpose of this study was to compare respiratory efficacy of percutaneous transtracheal with endotracheal, low frequency jet ventilation during microlaryngeal surgery. methods: ninety asa class i-ii patients aged between 16 and 70 years undergoing elective microlaryngeal surgery were...