This thesis addresses important challenges in the areas of streaming and spatio-temporal databases. It focuses on continuous querying of spatio-temporal environments characterized by (1) a large number of moving and stationary objects and queries; (2) need for near real-time results; (3) limited memory and cpu resources; and (4) different accuracy requirements. The first part of the thesis stud...

SCUBA-2 is the next-generation replacement for SCUBA (Sub-millimetre Common User Bolometer Array) on the James Clerk Maxwell Telescope. Operating at 450 and 850 μm, SCUBA-2 fills the focal plane of the telescope with fully-sampled, monolithic bolometer arrays. Each SCUBA-2 pixel uses a quarter-wave slab of silicon with an implanted resistive layer and backshort as an absorber and a superconduct...

Pinna nobilis is distributed in the northwest area of Mediterranean and Aegean Sea. In this study, on 9 September 2020, one specimen nobilis, pen shell, was observed during scuba diving at a depth 16 m off Samandag coast (36.259444° N, 35.810111° E), northeastern we for first time P. from Coast Turkey, coast. region, presence has never been previously recorded, new record confirms location

Photopic contrast sensitivity of air-breathing scuba divers was measured with a translucent test pattern at depths up to 40 m. The pattern was composed of sine wave gratings with spatial frequency and contrast changing logarithmically. The spatial transfer characteristics were measured at various depths under controlled optical conditions in seawater and in fresh water. Analysis indicates that ...

In a recent paper we have shown that most non-expansive Lipschitz functions (in the sense of Baire’s category) have a maximal Clarke subdifferential. In the present paper, we show that in a separable Banach space the set of non-expansive Lipschitz functions with a maximal Clarke subdifferential is not only of generic, but also staunch. 1991 Mathematics Subject Classification: Primary 49J52.

• Vesicles of Sargassum horneri tended to increase with increasing algal body weight. Contribution rate vesicles S. acoustic reflection was high. Target strength (TS) bodies increased Weight-dependent TS followed this equation: w = 11.1 log 10 W -71.1. Biomass can be estimated by measurements. A species macroalgae, , which has gas-filled vesicles, plays important roles as nursery grounds, feedi...

The literature on scuba divers' pulmonary oedema (SDPE) is reviewed, especially in its relationship to other immersioninduced pulmonary oedemas. It is concluded that although the three forms induced by swimming, freediving and scuba diving have some features in common, there are significant differences in their demographics, causation and clinical management. The swimming-induced cases tend to ...

Previous modelling has demonstrated that it is difficult to reproduce the SCUBA source counts within the framework of standard hierarchical structure formation models if the sources are assumed to be the high-redshift counterparts of local ultraluminous infrared galaxies with dust temperatures in the range 40 – 60 K. Here, we show that the counts are more easily reproduced in a model in which t...