properties, generating self-spreading nets. In 1999, MARCO granted a licensing agreement to Hampidjan in Reykjavik, Iceland to produce midwater trawls using this self-spreading technology (SST). Self-Spreading Technology Self-Spreading Technology involves using a special technique to produce the ropes and twine which are then arranged in the trawl in a specific pattern. Their physical characteristics automatically spread the meshes when the trawl is towed through the water. What actually happens is that the current is broken up by the ropes into much smaller currents which force the netting to spread, so that the meshes open better than in regular netting under the same conditions. Spreading causes the meshes to stretch and move much less in the water, boosting the trawl volume all the way back to the codend. The way in which the trawl section is woven achieves up to 20% lower towing resistance than regular netting.
või ainult osa sektsioone. Seinnooda alumine selis on lühem ja võib koos küljeselistega moodustada poolovaali. 20 tiib Lampara net General description: The lampara net is a surrounding net, shaped like a dust pan or a spoon (the leadline is much shorter than the floatline) with two lateral wings and a central bunt with small meshes to retain the catch Ajalooliselt vanim seinnoot, kuid kasutusel ka tänapäeal Vahemerel, USA- s jne. Pära asub nooda keskel, kuhu koguneb ka kala. Silmasuurus päras on väiksem, kui muudes osades, sest tuleb vältida kala nakkumist. Alumine selis on märgatavalt lühem ülemisest 21 Seinnoodad 22 Seiner
eat. Some fish hide in the rocks in the day and come out at night to eat. Find out what the bottom is like in different places by diving or looking down in the water. Find out where there are rocks, weeds or other places where fish are likely to gather. Learn the habits of the fish by setting the nets in different places to see what kind of fish you catch. It is best if the fish cannot see the nets in the water so they will not try to avoid the meshes. Set you nets when the sun is going down and haul them in the early morning so there will be no light for the fish to see by. If there are many sharks or big fish that can tear the nets, you must be careful not to leave the nets in the water too long. Sharks are attracted to fish that struggle in the nets. There will be less trouble with sharks if you haul the nets once during the night, take the fish out and set the nets again. Another problem is that if fish stay caught
point sprites. DirectX Graphics offers some higher-level programming elements with its retained mode and the Direct3DX (D3DX) utility library. Retained mode provides a simple scene graph (called a frame hierarchy) and some geometry constructs. However, most DirectX programmers don't use it, claiming it to be poorly implemented and aimed at 3D modeling rather than gaming. D3DX is more widely appreciated: it includes several gaming elements such as a skinning library for working with meshes, and functions for vertex and pixel shading. Briefly, the other DirectX API are: · DirectX Audio: for game soundtracks with 3D sound positioning and effects; · DirectPlay: help for networked games, including guaranteed and non-guaranteed message delivery, traffic control for slow links, game session management, peer- to-peer, and voice transmission; · DirectInput: offers interfaces for a variety of input devices, such as joysticks, headgear, and force-feedback devices;
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