Malaysian Fertility Transitions: Analyses and Projections of ASFR and TFR by Ethnicity

  • Authors

    • Syazreen N. Shair
    • Aida Y. Yusof
    • Siti N. M. Khair
    • Nurul I. Sharan
    2019-01-18
    https://doi.org/10.14419/ijet.v8i1.7.25958
  • Total fertility rate, age-specific fertility rate, functional data model, Malaysian fertility.
  • This paper presents the study of Malaysian fertility transitions: analyses and projections of age-specific fertility rates (ASFRs) and total fertility rates (TFRs) by ethnicity. In this study, the trends of ASFR and TFR were analysed and compared between ethnic groups, and provided insightful explanation behind the fertility transition over the last six decades from year 1958 to 2015. This paper is the first to adopt the functional data model to estimate fertility rates using Malaysia data. The advantage of the functional model over the mathematical curve approaches is that its ability to account for changes in fertility trends over the years. We use the functional data model to estimate future Malaysian ASFRs and TFRs according to three ethnic groups: Malay, Chinese and Indian. Results show that Malaysian total fertility rates (TFRs) have decreased tremendously from 6.28 children for every woman (aged 15 to 49) in 1958 to 2.23 children in 2015. The forecasts of age-specific fertility rates show that the ages of the highest births gradually change to older age, indicate that the trend of Malaysian women delaying their first birth, will continue to happen in the future. The forecasts of Malaysian TFR show that the TFRs of Chinese and Indian record the lowest low fertility, which is below 1.0 by 2027 and 2030 respectively.

     

     

  • References

    1. [1] S. Shafiee and E. Topal, “When will fossil fuel reserves be diminished?,†Energy Policy, vol. 37, no. 1, pp. 181–189, 2009.

      [2] D. Popov, “An option for solar thermal repowering of fossil fuel fired power plants,†Sol. Energy, vol. 85, no. 2, pp. 344–349, 2011.

      [3] M. Grätzel, “Conversion of sunlight to electric power by nanocrystalline dye-sensitized solar cells à¬,†vol. 164, pp. 3–14, 2004.

      [4] M. H. Bazargan, M. M. Byranvand, A. N. Kharat, and L. Fatholahi, “Natural pomegranate juice as photosensitizers for dye- sensitized solar cell ( DSSC ),†vol. 5, no. 4, pp. 360–362, 2011.

      [5] J. Gong, J. Liang, and K. Sumathy, “Review on dye-sensitized solar cells (DSSCs): Fundamental concepts and novel materials,†Renew. Sustain. Energy Rev., vol. 16, no. 8, pp. 5848–5860, 2012.

      [6] A. Hagfeldt, G. Boschloo, L. Sun, and L. Kloo, “Dye-sensitized solar cells,†Chemical, 2010.

      [7] Z. S. Wang, H. Kawauchi, T. Kashima, and H. Arakawa, “Significant influence of TiO2photoelectrode morphology on the energy conversion efficiency of N719 dye-sensitized solar cell,†Coord. Chem. Rev., vol. 248, no. 13–14, pp. 1381–1389, 2004.

      [8] D. Chen et al., “Mesoporous anatase TiO2 beads with high surface areas and controllable pore sizes: A superior candidate for high-performance dye-sensitized solar cells,†Adv. Mater., vol. 21, no. 21, pp. 2206–2210, 2009.

      [9] S. a M. Al-Bat’hi, I. Alaei, and I. Sopyan, “Natural photosensitizers for dye sensitized solar cells,†Int. J. Renew. Energy Res., vol. 3, no. 1, 2013.

      [10] J. Yang, C. Bark, K. Kim, and H. Choi, “Characteristics of the Dye-Sensitized Solar Cells Using TiO2 Nanotubes Treated with TiCl4,†Materials (Basel)., vol. 7, no. 5, pp. 3522–3532, 2014.

      [11] L. Meng, H. Chen, C. Li, and M. P. Dos Santos, “Preparation and characterization of dye-sensitized TiO2 nanorod solar cells,†Thin Solid Films, vol. 577, pp. 103–108, 2015.

      [12] T. Nikolay, L. Larina, O. Shevaleevskiy, and B. T. Ahn, “Electronic structure study of lightly Nb-doped TiO2 electrode for dye-sensitized solar cells,†Energy Environ. Sci., vol. 4, no. 4, p. 1480, 2011.

      [13] H. Yin, Y. Wada, T. Kitamura, and S. Kambe, “Hydrothermal synthesis of nanosized anatase and rutile TiO2 using amorphous phase TiO2,†J. Mater., 2001.

      [14] F. De Angelis, S. Fantacci, E. Mosconi, M. K. Nazeeruddin, and M. Grätzel, “Absorption Spectra and Excited State Energy Levels of the N719 Dye on TiO 2 in Dye-Sensitized Solar Cell Models,†J. Phys. Chem. C, vol. 115, no. 17, pp. 8825–8831, 2011.

      [15] G. Amin, M. H. Asif, A. Zainelabdin, S. Zaman, O. Nur, and M. Willander, “Influence of pH, precursor concentration, growth time, and temperature on the morphology of ZnO nanostructures grown by the hydrothermal method,†J. Nanomater., vol. 2011, 2011.

      [16] W. Zhou et al., “Control synthesis of rutile TiO2 microspheres, nanoflowers, nanotrees and nanobelts via acid-hydrothermal method and their optical properties,†CrystEngComm, vol. 13, no. 14, pp. 4557–4563, 2011.

      [17] K. J. Hwang, W. G. Shim, S. H. Jung, S. J. Yoo, and J. W. Lee, “Analysis of adsorption properties of N719 dye molecules on nanoporous TiO2surface for dye-sensitized solar cell,†Appl. Surf. Sci., vol. 256, no. 17, pp. 5428–5433, 2010.

      [18] D. A. H. Hanaor and C. C. Sorrell, “Review of the anatase to rutile phase transformation,†pp. 855–874, 2011.

      [19] W. Guo et al., “Rectangular Bunched Rutile TiO 2 Nanorod Arrays Grown on Carbon 2 Fiber for Dye-Sensitized Solar Cells.â€

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    N. Shair, S., Y. Yusof, A., N. M. Khair, S., & I. Sharan, N. (2019). Malaysian Fertility Transitions: Analyses and Projections of ASFR and TFR by Ethnicity. International Journal of Engineering & Technology, 8(1.7), 68-74. https://doi.org/10.14419/ijet.v8i1.7.25958