Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924"
Viser treff 481-493 av 493
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The use of a digital computer in fisheries research
(ICES CM Documents;1971/B:16, Working paper, 1971) -
Use of acoustics in studies of fish reaction to imposed stimuli
(ICES CM Documents;1985/B:44, Working paper, 1985)The general distribution pattern of fish in a large holding pen is described through the integrated echo intensity in six separate cells using transducers mounted below the pen. The reaction of fish to different stimuli, ... -
Use of derrick scales for weighing live fish
(ICES CM Documents;1981/F:40, Working paper, 1981)In Norway purse seine catches of saithe are usually sold to the factories alive. The fish is transported in boats specially constructed for the transport, i.e. well-boats. The saithe is weighed when transferred to these ... -
Using acoustic surveys to improve the prediction of bottom trawl indices of abundance
(ICES CM documents, Working paper, 1991) -
Using artificial neural networks to combine acoustic and trawl data in the Barents and North Seas
(ICES CM documents, Working paper, 2004)Groundfish have a wide and variable distribution making the use of trawling alone a highly inadequate sampling method. Trawl data provide species identification and numbers over a very small area and habitat type while ... -
Verified acoustic identification of Atlantic mackerel
(ICES CM documents, Working paper, 2004)Calibrated, digitised data from simultaneously working multi-frequency echo sounders with nearly identical and overlapping acoustic beams have been used to generate new, synthetic echograms where only targets identified ... -
Vertical entrance into a trawl of Barents Sea gadoids as studied with a two level fish trawl
(ICES CM Documents;1985/B:46, Working paper, 1985)Catch figures of different demersal species(cod, haddock, saithe etc.) in the cod-ends of a two level trawl were examined using variable height of the separating panel (0.5, 0.75, 1.0 and 1.5 m). Cod enters the trawl ... -
Vessel heave, and index for air bubble attenuation corrections
(ICES CM Documents;1991/B:37, Working paper, 1991)The possible use of vessel heave as a correction indicator for air bubble attenuation of acoustic signals from hull mounted transducers is investigated. Vessel heave was monitored along with the echo energy from the air ... -
Voice controlled form filling
(ICES CM Documents;1991/C:22, Working paper, 1991)During field work in the sea - in particular when collecting data like weight, length, sex, stadium, etc. from fish samples, the observations are first manually noted in a standardized sampling form. One popular form ... -
Vulnerability to predation of small cod (Gadus morhua) that escape from a trawl
(ICES CM Documents;1995/B:15, Working paper, 1995)Studies of the vulnerability to gear damage of fish that have been caught in a trawl but have escaped through the codend meshes have focussed on determining survival rates. This study examines the risk of predation in ... -
WebGR – storing images of biological material and creating a framework to promote the implementation of sound statistical analysis in age calibration
(ICES CM documents;2009/N:09, Working paper, 2009)The objective of the WebGR project is to develop a set of web services to support the organisation and data analysis of calibration workshops, both for age and maturity information, implemented in a coherent tool installable ... -
Wideband beam pattern
(ICES CM Documents;1989/B:2, Working paper, 1989)Transducer directivity is important in the basic acoustic surveying methods of echo counting and integration. In quantifying the directivity, the beam pattern is often computed assuming ideal single-frequency operation. ... -
Workshop on methods for merging metiers for fishery based sampling (WKMERGE) [19-22 January 2010 Copenhagen, Denmark]
(ICES CM documents;2010/ACOM:40, Working paper, 2010)