• Title/Summary/Keyword: Enumerating equation

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CHROMATIC SUMS OF NONSEPARABLE SIMPLE MAPS ON THE PLANE

  • Li, Zhaoxiang;Liu, Yanpei
    • Journal of applied mathematics & informatics
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    • v.12 no.1_2
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    • pp.129-142
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    • 2003
  • In this paper we study the chromatic sum functions for rooted nonseparable simple maps on the plane. The chromatic sum function equation for such maps is obtained . The enumerating function equation of such maps is derived by the chromatic sum equation of such maps. From the chromatic sum equation of such maps, the enumerating function equation of rooted nonseparable simple bipartite maps on the plane is also derived.

THE ENUMERATION OF ROOTED CUBIC C-NETS

  • CAI JUNLIANG;HAO RONGXIA;LID YANPEI
    • Journal of applied mathematics & informatics
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    • v.18 no.1_2
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    • pp.329-337
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    • 2005
  • This paper is to establish a functional equation satisfied by the generating function for counting rooted cubic c-nets and then to determine the parametric expressions of the equation directly. Meanwhile, the explicit formulae for counting rooted cubic c-nets are derived immediately by employing Lagrangian inversion with one or two parameters. Both of them are summation-free and in which one is just an answer to the open problem (8.6.5) in [1].

GROUP ACTION FOR ENUMERATING MAPS ON SURFACES

  • Mao, Linfan;Liu, Yanpei
    • Journal of applied mathematics & informatics
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    • v.13 no.1_2
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    • pp.201-215
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    • 2003
  • A map is a connected topological graph $\Gamma$ cellularly embedded in a surface. For any connected graph $\Gamma$, by introducing the concertion of semi-arc automorphism group Aut$\_$$\frac{1}{2}$/$\Gamma$ and classifying all embedding of $\Gamma$ undo. the action of this group, the numbers r$\^$O/ ($\Gamma$) and r$\^$N/($\Gamma$) of rooted maps on orientable and non-orientable surfaces with underlying graph $\Gamma$ are found. Many closed formulas without sum ∑ for the number of rooted maps on surfaces (orientable or non-orientable) with given underlying graphs, such as, complete graph K$\_$n/, complete bipartite graph K$\_$m, n/ bouquets B$\_$n/, dipole Dp$\_$n/ and generalized dipole (equation omitted) are refound in this paper.

Studies on the Enumeration of Population of Spawning Salmon (표식율법에 의한 연어 산란미수의 추정에 대하여)

  • Kim, Wan Soo
    • 한국해양학회지
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    • v.6 no.2
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    • pp.104-106
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    • 1971
  • In enumerating salmon spawning population by the tag-recovery method, the error caused by the emigration of the tagged fish into the non-statistical area and the misjudgement of the tagged fish as untagged, which is caused by bear predation, appear to give a bias to the estimate of population size. Efforts were made in the present study to remove such bias by estimating population size under certain assumtion and by introducing a correction equation for the sample tag-ratios.

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Detection of Irradiation Treatment for Seasoned-Powdered Foods by Thermoluminescence Measurement (Thermoluminescence 측정에 의한 조미분말식품의 방사선 조사유무 확인)

  • Chung, Hyung-Wook;Kwon, Joong-Ho
    • Korean Journal of Food Science and Technology
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    • v.30 no.3
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    • pp.509-516
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    • 1998
  • Thermoluminescence measurements were applied to the detection of seasoned-powered foods such as shellfish extract powder, seasoned marine products, Ramen soup powder and sardine extract powder whether they are irradiated or not. Correlation coefficients $(R^2)$ between irradiation doses and corresponding TL responses were more than 0.5966 in all samples and 0.9500 in Ramen soup powder. TL threshold value was pre-established for the detection of unknown Ramen soup powders by verifying TL responses with a re-irradiation step. Threshold values were maximum 1.37 for the nonirradiated samples and minimum 6.06 for the 2.5 kGy-irradiated samples. The samples showing values between 1.37 and 6.06 were subjected to a re-irradiation step for their detection, which results were reconfirmed by enumerating the total bacterial load of the detected samples. Pre-established threshold values were successfully applicable to the detection of 167 coded unknown samples, both nonirradiated and irradiated with gamma or electron-beam energy. In the assessment of irradiated doses, three calibration curves were pre-established by plotting TL intensity versus applied doses, of which a quadratic equation was obtained for the potential estimation of irradiated doses with some variations from the real doses.

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