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Determinants of Child Health in Pakistan

Thesis Info

Author

Sidra Zafar

Department

Deptt. of Statistics, QAU.

Program

Mphil

Institute

Quaid-i-Azam University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2010

Thesis Completion Status

Completed

Page

84

Subject

Statistics

Language

English

Other

Call No: DISS/M.PhIl STAT/84

Added

2021-02-17 19:49:13

Modified

2023-02-19 12:33:56

ARI ID

1676718854680

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اسمِ اعظم کے وہ اسرار کو پالیتے ہیں

اسمِ اعظم کے وہ اسرار کو پا لیتے ہیں
’’عشقِ سرکاؐر جو سینے میں بسا لیتے ہیں‘‘

نعمتِ عُظمیٰ کا فیضان انہیں ملتا ہے
جو درِ قدس پہ دامن کو بچھا لیتے ہیں

اُن کو آتے ہیں نظر نورِ ہدیٰ کے جلوے
خاک طیبہ کی جو آنکھوں میں لگا لیتے ہیں

ہر صحابیؓ کا یہ مسلک ہے کہ رودادِ الم
جنؐ کی سُنتا ہے خدا اُنؐ کو سُنا لیتے ہیں

روزنِ چشمِ تصوّر سے اُنہیںؐ دیکھتے ہیں
دوریوں میں یوں حضوری کا مزا لیتے ہیں

شوقِ طیبہ کا شجر سوکھنے کب دیتے ہیں
اشکِ ہجراں کا اِسے پانی لگا لیتے ہیں

اُن کی سانسوں میں بسی خلدِ بریں کی خوشبو
شہرِ طیبہ کی جو عرفانؔ ہوا لیتے ہیں

Proposing Sociological Research on Children Health Problems in Pakistan

Like many low-income countries, Pakistan is facing children’s health problems. The major health problems affecting children in the country are Pneumonia, Diarrhoea, Measles, Malaria and malnutrition. There is much research has already been conducted on biomedical and epidemiological aspects of these health problems, but little is known about the social and cultural dimensions of children’s health issues. This paper attempts to propose the sociological research on children’s health problems in Pakistan with the emic focus on local context. The proposed future research may mainly be situated in the interpretivist paradigm of qualitative inquiry. Thus, it will contribute in up-scaling the very basic understanding of the meaning formed by people about social determinants of prevailing children health problems and their potential hazardous consequences in Pakistan.

Theoretical Analysis of the Effect of Defects on Physical Properties of Ii-Vi Semiconductors

The ability to obtain tunable properties in semiconductor devices with compositional variation makes multi-ternary semiconductor compounds extremely useful for a variety of industrial applications such Solar Cells, Light Emitting Diodes (LED), X-rays and Gamma ray detectors. II-VI semiconductors have attracted great attention due to their interesting applications in everyday life and research. In this thesis, the physical properties of II-VI pure and their multi-ternary compounds with the zinc-blende phase are explored. To calculate the physical properties of ZnO1-xSx, ZnSe1-xSx and CdSe1-xSx by introducing defects using plane wave pseudo-potential method with Local Density Approximation (LDA) and LDA+U. The obtained results of each individual compound are given below. In ZnO1-xSx crystal, Sulfur is replaced by Oxygen in the step of 0.25 from 0 to 1. The variance in the structural, electronic, and thermodynamic properties of ZnO1-xSx semiconductors with the change in doping concentration of Sulfur are calculated. It is observed that the LDA+U method gives better improvement in the results instead of LDA. At various concentrations the ground-state properties are determined for bulk materials ZnO, ZnS, and their tertiary alloys in cubic zinc-blende phase. From the results, a minor difference has been observed in lattice parameters from Vegard‟s law and other calculated results which may be due to the large mismatch of lattice parameters of binary compounds ZnO and ZnS. A small deviation in the bulk modulus from linear concentration dependence has also observed for these alloys. The thermodynamic properties including the phonon contribution to Helmholtz free energy ΔF, phonon contribution to internal energy ΔE, and specific heat at constant-volume CV are calculated within quasi harmonic approximation based on the calculated phonon dispersion relations. The structural, electronic, and elastic properties of ZnSe1-xSx for zinc-blende structure with different composition are calculated. The exchange-correlation potential is treated with the pz-LDA for these properties. Moreover, LDA+U approximation is employed to treat the “d” orbital electrons properly. A comparative analysis of band gap calculated within both LDA and LDA+U schemes is presented. The analysis of obtained results shows considerable improvement in the band gap. The inclusion of compositional disorder increases the values of all elastic constants. The results have shown that elastic Page ix constant C11, C12, and C44 are mainly influenced by compositional disorder and found to be in well agreement with literature. The results also reflect the ductile nature of these pure and defected alloys. The ground-state properties are resolute for the bulk materials CdS, CdSe, and their alloys. Very small deviation of the lattice constant from Vegard‟s law is observed for CdSe1–xSx alloys at different concentrations but a little larger deviation of the bulk modulus from linear concentration dependence (LCD) is observed for considered alloy with downward bowing. The effect of Sulfur composition on electronic properties using LDA and LDA+U is explored. It is found that with LDA+U method, the band gap for CdSe1–xSx is very close to experimental value. Elastic constants such as C11, C12, C44, Young Modulus, and Shear Modulus are also calculated and these results revealed that CdSe1–xSx compound is ductile in nature.