Quantification of Periodicities in Fugitive Emission of Gases from Lyari Waterway
Periodicities in the environmetric time series can be
idyllically assessed by utilizing periodic models. In this
communication fugitive emission of gases from open sewer channel
Lyari which follows periodic behaviour are approximated by
employing periodic autoregressive model of order p. The orders of
periodic model for each season are selected through the examination
of periodic partial autocorrelation or information criteria. The
parameters for the selected order of season are estimated individually
for each emitted air toxin. Subsequently, adequacies of fitted models
are established by examining the properties of the residual for each
season. These models are beneficial for schemer and administrative
bodies for the improvement of implemented policies to surmount
future environmental problems.
[1] H. Akaiake, "A new look at the statistical model identification," IEEE
Trans. Automatic Control, AC-19, pp. 716-723, 1974.
[2] H. Akaiake, "On entropy maximization principal," in Proc. of the
symposium on Applications of Statistics, Amsterdam: North-Holland,
1977.
[3] G. Schwarz, "Estimating the dimension of a model," Ann.
Statistics, 6, pp. 461-464, 1978.
[4] H. Sakai, "Circular lattice filtering using Pagano-s method," IEEE
Trans. Acoust. Speech Signal Process,30, pp. 279-287, 1982.
[5] M. Pagano, "On periodic and multiple autoregressions," Ann. Statistics,
6, pp. 1310-1317, 1978.
[6] W.K. Li, and A.I. McLeod, "Distribution of the residual autocorrelation
in multivariate ARMA time series models," Journals of the Royal
Statistical Society, Series B, 43(2), pp. 231-239, 1981.
[7] E. Haq, "Land form drainage system basin in Karachi region," Karachi
Development Autority, Karachi, MP & ED Rep. No.9, 1971.
[8] ACE, "Industrial waste pollution," Associated Consulting Engineers,
Karachi, Final Report, 1983, vol.1.
[9] Balfours, "Feasibility study for preparation of sewage and sewage
disposal projects in Karachi," Balfours Consulting Associates, Final
Report, 1988,vol.2.
[10] KDA and MP & ECD, "Karachi Costal Recreation Development Plan
1990-2000," Karachi Development Authority and Master Plan &
Environmental Control Department, Karachi, pp. 49-80, 1990.
[11] KPT, "Environmental impact studies," Karachi Port Trust, Final
Report,1996, vol.1.
[12] A. Mansoor & S. Mirza, "Waste Disposal And Stream Flow Quantity
and Quality of Lyari River," Indus Journal of Mangement and Social
Sciences, 1(1), pp. 76-79, 2007.
[13] R.K. Naeem, and A. Mansoor, "Stochastic modeling approach for water
quality assessment," in Proc. of International Conf. On Built
Environment in Developing Countries, Malaysia: Pennag, 2007, pp-113-
119.
[1] H. Akaiake, "A new look at the statistical model identification," IEEE
Trans. Automatic Control, AC-19, pp. 716-723, 1974.
[2] H. Akaiake, "On entropy maximization principal," in Proc. of the
symposium on Applications of Statistics, Amsterdam: North-Holland,
1977.
[3] G. Schwarz, "Estimating the dimension of a model," Ann.
Statistics, 6, pp. 461-464, 1978.
[4] H. Sakai, "Circular lattice filtering using Pagano-s method," IEEE
Trans. Acoust. Speech Signal Process,30, pp. 279-287, 1982.
[5] M. Pagano, "On periodic and multiple autoregressions," Ann. Statistics,
6, pp. 1310-1317, 1978.
[6] W.K. Li, and A.I. McLeod, "Distribution of the residual autocorrelation
in multivariate ARMA time series models," Journals of the Royal
Statistical Society, Series B, 43(2), pp. 231-239, 1981.
[7] E. Haq, "Land form drainage system basin in Karachi region," Karachi
Development Autority, Karachi, MP & ED Rep. No.9, 1971.
[8] ACE, "Industrial waste pollution," Associated Consulting Engineers,
Karachi, Final Report, 1983, vol.1.
[9] Balfours, "Feasibility study for preparation of sewage and sewage
disposal projects in Karachi," Balfours Consulting Associates, Final
Report, 1988,vol.2.
[10] KDA and MP & ECD, "Karachi Costal Recreation Development Plan
1990-2000," Karachi Development Authority and Master Plan &
Environmental Control Department, Karachi, pp. 49-80, 1990.
[11] KPT, "Environmental impact studies," Karachi Port Trust, Final
Report,1996, vol.1.
[12] A. Mansoor & S. Mirza, "Waste Disposal And Stream Flow Quantity
and Quality of Lyari River," Indus Journal of Mangement and Social
Sciences, 1(1), pp. 76-79, 2007.
[13] R.K. Naeem, and A. Mansoor, "Stochastic modeling approach for water
quality assessment," in Proc. of International Conf. On Built
Environment in Developing Countries, Malaysia: Pennag, 2007, pp-113-
119.
@article{"International Journal of Engineering, Mathematical and Physical Sciences:63581", author = "Rana Khalid Naeem and Asif Mansoor", title = "Quantification of Periodicities in Fugitive Emission of Gases from Lyari Waterway", abstract = "Periodicities in the environmetric time series can be
idyllically assessed by utilizing periodic models. In this
communication fugitive emission of gases from open sewer channel
Lyari which follows periodic behaviour are approximated by
employing periodic autoregressive model of order p. The orders of
periodic model for each season are selected through the examination
of periodic partial autocorrelation or information criteria. The
parameters for the selected order of season are estimated individually
for each emitted air toxin. Subsequently, adequacies of fitted models
are established by examining the properties of the residual for each
season. These models are beneficial for schemer and administrative
bodies for the improvement of implemented policies to surmount
future environmental problems.", keywords = "Exchange of Gases, Goodness of Fit, Open Sewer
Channel, PAR(p) Models, Periodicities, Season Wise Models.", volume = "3", number = "7", pages = "545-9", }