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    Effect of the deep waterway project on the salinities in the north passage of the Changjiang Estuary
    FAN Zhong-ya, GE Jian-zhong, DING Ping-xing, PAN Ling-zhi
    Journal of East China Normal University(Natural Sc    2012, 2012 (4): 181-189.  
    Abstract2814)      PDF (5323KB)(2498)      
    Unstructured-grid Finite Volume Coastal and Ocean Model (FVCOM) has been applied on the north passage, Changjiang Estuary, to study the salinity distribution and its variations under the impacts of different phases of the deep waterway project (DWP). Driven by the same forcings of freshwater discharge, tide and wind, the spring-neap-averaged and typical tidal moment’s salinity distributions under different phases of DWP are simulated and analyzed The modeling results show that the isohaline has been significantly pushed downstream after Phase I, and continued moving eastward after Phase II. At the same time, the controlling region of isohaline 1‰~5‰ has smoothly increased and the vertical mixing effects seem be weakened from the middle to eastern parts of shipping channel. Strong stratification is revealed along the deep channel. After the Phase III, the controlling region of isohaline 1‰~5‰ still increases with the upstream direction. The onshore saltwater intrusion has significantly intensified as the increased baroclinic gradient force due to deepened eastern channel.
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    Cited: Baidu(7)
    On the independence number of edge chromatic critical graphs
    QI Lin-Ming, MIAO Lian-Ying, LI Wei-Qi
    Journal of East China Normal University(Natural Sc    2015, 2015 (1): 114-119.   DOI: 10.3969/j.issn.1000-5641.2015.01.013
    Abstract1109)      PDF (235KB)(1546)      
    In 1968, Vizing conjectured for any edge chromatic critical graph G = (V,E) with maximum degree Δ and independence number α(G), α(G)≤|V|/2. In this paper, we proved that α(G) ≤(3Δ-3)/(5Δ-3)|V| for Δ∈{9,10} and α(G) ≤(15Δ-42)/(23Δ-42)|V| for Δ∈{11, · · · , 46}
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    Cited: Baidu(7)
    Predictions of suitable distribution of Meteorium in China under climate change
    LIU Yan
    Journal of East China Normal University(Natural Sc    DOI: 10.3969/j.issn.1000-5641.2016.06.021
    Study on the truncated sequential assurance test for a proportion
    HU Si-gui,ZHOU Xiao-jing
    Journal of East China Normal University(Natural Sc    2015, 2015 (3): 47-56.   DOI: 10.3969/j.issn.1000-5641.2015.03.007
    Abstract1174)      PDF (413KB)(1560)      
    For the high-cost and destructive sample test of a proportion, such as the acceptance test of missiles hit ratio, the fuze reliability and so on, how to reduce the cost is the focus of management and researching. In this paper, based on the Bayesian analysis for qualification test, a truncated sequential assurance
    test TA for the success/failure success rate P$ was studied,and the design steps of the assurance test TA was also presented.Through the study on the operation characteristic curve (OC) and the average sample number (ASN) curve of the assurance test T A, it shows that when the product quality is on a high level, assurance test TA has an almost equal probability level to pass the acceptance test with the original test T OA; at the same time,it has a remarkable reduction on the average sample number, thus it can greatly reduce product sample test cost. In the end, real example was presented to verify the excellent characteristics of the sequential truncated  assurance test T proposed here
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    Cited: Baidu(1)