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  • 20世纪80年代初 首次提出“政企分开”的概念。民航北京管理处顺应时代要求,实行重大体制改革,组建了中国民航北京管理局、中国国际航空公司和北京首都机场
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  • 20世纪80年代初 首次提出“政企分开”的概念。民航北京管理处顺应时代要求,实行重大体制改革,组建了中国民航北京管理局、中国国际航空公司和北京首都机场
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  1. Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl

    needed to obtain such material. Previous surveys carried out annually over nearly 20 years covered only ... December 1984 20 January-9 March 1988 Vessel RV Argus RV Evrika RV Evrika No. of Stations 177 ... Evrika (20 January-9 March 1988) Figure 1: Station grid for krill sampling surveys. Krill ... " 50" 45" 40" 35" 30" Figure 4: Krill diskibution (g/ l 000 m3) in strata 0 to 100 m, 20 January to ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Автор(ы): Sushin, V.A. and K.E. Shulgovsky

  2. Modelling variability and estimating power to detect change in Adélie penguin fledgling weights

    period TotalYear 1: 10–14 Feb 2: 15–19 Feb 3: 20–24 Feb 4: 25 Feb–1 Mar 5: 2–6 Mar 1: 1990 ... 9: 1998–1999* 50 20 15 85 10: 1999–2000 50 50 11: 2000–2001* 50 50 50 150 12: 2001–2002 ... required to be detected (0, 2, 4,…., and 20%). In all cases, power is assessed for detect- ing directional ... fledgling weights 0 4 8 12 16 20 0.0 0.2 0.4 0.6 0.8 1.0 a) 100 birds % change po w er to d et ...

    Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Автор(ы): Emmerson, L.M., C. Southwell and J. Clarke

  3. Statistical problems in krill stock hydroacoustic assessments

    approximately 20 n miles from Seal Island (the estimated foraging range of a penguin, personal communication ... is approximately 20 n miles from Seal Island, a known penguin rookery. The large swarm observed in ... l'Elephant en mars 1981 (a) et mars 1984 (b). La zone hachuree est situee a environ 20 milles n de I'ile ... KapTe Haxo,aHTC.H npHMepHO Ha paCTO.HHHH 20 MOPCKHX MHJIb OT o. CHJI, H3BecTHoM 3aJIe)l(KH nHHrBHHOB ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.

  4. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

    future process error seem to have. Table 3 shows the predicted catch limits for 5, 10 and 20% CVs for ... between a 5 and 10% error, but the 20% CV yielded a significant decrease in the catch limit set (nearly ... depletion rule is concerned with the propor- tion of time the stock spends below 20% of K (in this case ... ), not its status relative to 20% of K in the final year of projection. One might then expect that ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Автор(ы): Hillary, R.M

  5. Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands

    levels (0, 10, 20, 30, 40, 50, 75, 100, 125, 150 and 200 m). Chl-a concentration was determined by ... shallower. The top level of the integration depth, 10 m, was changed sometimes to 20 m in order to avoid ... 1991 was approximately half of the estimate (342 g/m2) obtained there on 20 January 1988 (Fisheries ... Seal Island, low krill abundance in the beginning of this summer caused approximately 20% decline (as ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Автор(ы): Ichii, T., H. Ishii and M. Naganobu

  6. On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)

    1964-69 16-17 0 3 0 0 3 18-19 0 18 0 0 18 20-21 0 9 2 14 25 22-23 0 2 8 77 87 24-25 0 23 53 138 ... 25 2 0 0 0 0 0 0 0 0 20-21 1 41 0 0 0 0 0 0 0 0 22-23 0 43 8 0 0 0 0 0 0 0 24-25 0 83 9 0 0 0 0 0 ... Procedure 1 Procedure 2 1 0 20 0 0 20 16 2 1 129 103 355 588 384 3 11 228 169 183 591 616 4 9 132 81 53 ... 275 246 5 20 121 68 18 227 238 6 17 83 16 3 119 131 7 16 29 0 4 49 45 8 1 10 0 4 15 12 9 0 7 0 3 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Автор(ы): Frolkina, G.A. and R.S. Dorovskikh

  7. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

    dropping below 20% of its unexploited median level is 0.1; (ii) Rule 2: y2 is the catch level at which ... : Probability of stock biomass dropping below 20% of the unexploited median level over a 10-year period ... zero catches there is a substantial probability of depletion of the population below 20% of its ... situation where even under conditions of no exploitation the population often drops to less than 20% of ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Автор(ы): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

  8. Methodological guidelines on the assessment of trawl catchability of krill by means of statistical modelling

    nOBopOT, TO 9TO SHa'qHT, 'qTO npOHSOlliJIO SameMJIeHHe (CM. pHC. 20), H, CJIegoBaTeJIbHO ... ~ %.008y?3 T.O nepeHTH K n. 29 (KaK HEn. 10, s~eCb 008~ = Vl - 6 2~, HHa~e - npo~on~Tb. 20. OnpoKH ... 7 7 7 7 0 7 14 zl 0 15 15 15 0 15 20 15 X 2 7 0 14 14 0 7 14 7 z2 15 20 20 0 15 20 15 0 ... .4 EHTIepHO~ CeTKH J CM. pHc.3 J 20 15 o B 7 a C 14 X,f1f1 ZJ NI'1 6 20 C 15 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 195-222 : Автор(ы): Kizner, Z.I.

  9. Statistical power to detect changes in growth rates of Antarctic fur seal pups

    ------- ------- Females ------- mean mean Date n weight (kg) s.d. n weight (kg) s.d. 1988: 2 Jan 30 9.91 1.60 20 8.78 ... 1.13 15 Jan 40 11.28 1.64 26 9.50 1.49 27 Jan 41 12.91 1.64 20 10.76 1 .15 12 Feb 36 15.91 2.22 35 ... =O.1 • 5 10 15 20 25 PERCENT CHANGE IN 4 weighing dates 6. 28-day intervals 50 pups/day 3 ... :=,8=0.1 0:=,8=0.1 + + 15 20 25 CHANGE IN 30 35 40 GROWTH 45 50 RATE Figure 2: If the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Автор(ы): Boveng, P., J.L. Bengtson and M.E. Goebel

  10. Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey

    by a trawl bag of 20 mm twine. This protects the trawl bag from mechanical damage. Features of ... catchability no less than ~ x(P) = 0.1, it would be necessary to carry out over the study area 20 hauls with a ... , document, WG-Krill-90/20. SIEGEL, v. 1982. Investigation on Post Spawning Concentration of the Antarctic ... swann depth (metres) 42 29 41 24 29 25 30 21 cr, swann depth 13 20 13 8 10 14 16 8 Mean swann ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Автор(ы): Kasatkina, S.M.

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