9 found
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  1.  10
    Impact of the 2011 Earthquake on Marriages, Births and the Secondary Sex Ratio in Japan.Yuri Hamamatsu, Yosuke Inoue, Chiho Watanabe & Masahiro Umezaki - 2014 - Journal of Biosocial Science 46 (6):830-841.
    SummaryOn 11th March 2011 a magnitude nine earthquake struck the Tohoku region of Japan. The earthquake resulted in a large tsunami and an accident at the Fukushima Nuclear Power Plant. Previous studies have suggested that demographic indices relating to reproduction and marriage change after such massive disasters. The present study investigated whether the number of births, number of marriages and the secondary sex ratio changed after the East Japan Earthquake. The monthly number of births and marriages in each prefecture in (...)
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  2.  15
    Secondary Sex Ratio and Marriage After Disaster: A Reply to O'Donnell and Behie.Yuri Hamamatsu, Chiho Watanabe & Masahiro Umezaki - 2015 - Journal of Biosocial Science 47 (3):417-420.
  3.  38
    Association of Household Demographic Variables with Child Mortality in Côte D'Ivoire.Samuel Y. Andoh, Masahiro Umezaki, Keiko Nakamura, Masashi Kizuki & Takehito Takano - 2007 - Journal of Biosocial Science 39 (2):257-265.
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  4.  46
    Diet Among People in the Terai Region of Nepal, an Area of Micronutrient Deficiency.Rajendra P. Parajuli, Masahiro Umezaki & Chiho Watanabe - 2012 - Journal of Biosocial Science 44 (4):401-415.
  5.  11
    Time Allocation to Subsistence Activities Among the Huli in Rural and Urban Papua New Guinea.Masahiro Umezaki, Taro Yamauchi & Ryutaro Ohtsuka - 2002 - Journal of Biosocial Science 34 (1):133-138.
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  6.  11
    Geographic Clustering of the Secondary Sex Ratio in Japan: Association with Demographic Attributes.Yosuke Inoue, Masahiro Umezaki & Chiho Watanabe - 2013 - Journal of Biosocial Science 45 (2):279-284.
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  7.  11
    Daily Time Budgets of Long‐Distance Commuting Workers in Tokyo Megalopolis.Masahiro Umezaki, Hitoshi Ishimaru & Ryutaro Ohtsuka - 1999 - Journal of Biosocial Science 31 (1):71-78.
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  8.  8
    Twenty Years’ Demographic Change in Sedentes and Migrants of an International Migrant-Sending Community in Tonga.Shoko Fukuyama, Chiho Watanabe, Masahiro Umezaki & Ryutaro Ohtsuka - 2009 - Journal of Biosocial Science 41 (1):77.
  9.  5
    Impact of Rural‐Urban Migration on Fertility: A Population Ecology Analysis in the Kombio, Papua New Guinea.Masahiro Umezaki & Ryutaro Ohtsuka - 1998 - Journal of Biosocial Science 30 (3):411-422.
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