求翻译:designed mixes shall be designed to achieve a target mean strength such that no more than 2.5% of test results fall below the specified strength unless the Purchaser's specification or its compliance rules require a more stringent criterion.是什么意思?待解决 悬赏分:1 - 离问题结束还有 de...
Size estimates based on traditional mean target strength underestimated the total length of nase. Applying maximum TS from side-aspect detections overestimated size due to signal amplifications of up to 10 dB in the single-echo detections of tracked fish. Based on Lilja's simulations, the strong ...
dkm→n:=∥pk(m)-qn∥2is the distance between the known positionqnof sensornand the unknown position vectorpk(m)of targetm, andνn,kis a zero-mean Gaussian noise at sensorn. Functionh(•) satisfiesh(0) = 1, is non-negative, decreasing, and is either assumed known from the ...
Target Strength refers to the ability of a material to withstand the kinetic energy of an excavation flow during cavity growth, either by resisting the plastic work against the material's strength or by absorbing the potential energy in the gravity field. ...
In situ acoustic target strength (TS) experiments were conducted on Atlantic redfish (Sebastes spp.) in Newfoundland waters (1996–1998) using deep-tow dual beam and hull-mounted split beam echosounders (38 kHz). The dual and split beam mean TSs did not differ. The deep-tow system was ...
The mean tilt angle was 20.4° (S.D.=18.5°), which differed slightly from that of the lesser sandeel, Ammodytes marinus. The regression equations of the average TS values were TS38kHz=8.2 log10SL74.2 and TS120kHz=20.9 log10 SL92.6, respectively. At 120 kHz, the slope was close to ...
In situ measurements of fish target strength are selected for use in echo integrator surveys at 38 kHz. The results are expressed through equations in which the mean target strength TS is regressed on the mean fish length l in centimeters. For physoclists, TS=20 log l–67.4, and for clup...
Tilt Angle and Theoretical Target Strength of the Japanese Sandeel, Ammodytes personatus, Captured on the Northern Coast of Hokkaido The mean tilt angle was 20.4掳 (S.D.=18.5掳), which differed slightly from that of the lesser sandeel, Ammodytes marinus. The regression equations of... SAFRUDD...
Target strength of some European fish species and its dependence on fish body parameters The dependence of maximum, minimum and mean target strength (TS), in both horizontal and vertical planes, on the body length, weight and swimbladder volume... J Frouzova,J Kubecka,H Balk,... - 《Fis...
Mean octave鈥恇and target strengths ranged from 鈭 to 10.8 dB in the octave鈥恇ands centered at 375 and 12 000 Hz, respectively.关键词: Aircraft Oceanography Acoustic analysis Acoustical measurements Agroacoustics DOI: 10.1121/1.1914660 被引量: 69 ...