Vol 4 Issue 2 October 2016-March 2017

Abstract: The purpose of this research project is to model determinants of choices of contraceptive methods in Rwanda. Reviews show that Rwanda has dramatically increased the contraceptive prevalence rate from 4% in 2000 to 29% in 2010. Injectables dominates the national contraceptive prevalence in Rwanda (50.9) but no clear patterns about this selection. To inform policy makers, a secondary analysis of RDH2010 was done. Descriptive statistics was used to summarize categorical data, and chi-square test was used to show dependence between covariates and outcome. The test of collinearity between explanatory variables was done prior fitting a bi- and multi-variable multinomial logistic models so to produce a multivariate efficient model. Results have shown that relative to injectables, older women (35+ years), women with secondary or higher education and women with higher parity were more likely to choose sterilization (RRR=12.0, p=0.028; RRR=2.5, p=0.049; RRR=3.5, p=0.040), IUD (RRR=5.9, p=0.04; RRR=7.2, p=0.012; RRR=1.5, p=0.006) than their counterparts. Rural residents and unemployed women or women involved in informal agricultural activities were less likely to use sterilization (RRR=0.5, p=0.041; RRR=0.4, p=0.026) relative to the use of injectables than their fellow rural and employed women. Partner’s approval has a significant effect on the choice of sterilization (RRR=14.3, p=0.002) and barrier methods (RRR=6.0, p<0.001) over injectables. To increase contraception uptake, we recommend spousal involvement and giving priority and more focus on rural, non-educated and unemployed women by raising their awareness about a variety, free choice of contraceptive methods and their reproductive health. Keywords: Family planning, contraceptive methods, contraceptive prevalence, multinomial logistic, relative risk ratio. Title: MODELLING DETERMINANTS OF CHOICE OF CONTRACEPTIVE METHODS IN RWANDA Author: Dieudonne SEBUHORO, Dr. Joseph K. Mung’atu, Dr. Marcel NDENGO International Journal of Mathematics and Physical Sciences Research ISSN 2348-5736 (Online) Research Publish Journals

Abstract: Geochemical Exploration for gold often times fail to produce favourable results because pathfinders for the gold were not properly identified, in others the pathfinders could not be linked to the host geology and so high potential deposits have remained unexploited. The aim of the study is to identify pathfinder elements for gold and provide a link between inter-elemental associations and the hosting geology using multi-element soil geochemical data from Julie belt of Ghana, this was achieved by geostatistical tools. The dendrogram identified 3 clusters; Cluster 1 is dominated with V, Zn, Cu, Zr, Sr, Cr and Rb, cluster 2 with Au, Pb, W, As, Th, Co, Cl and cluster 3 having Ti, Mn, Ca, K and Fe. The gold was associated with the second cluster. The PCA identified 6 components contributing for 70.08% of the total variability, component 1 elements (Ti, Mn, Fe, Cu and Zn) gives the elemental composition of the mafic rock which has undergone least alteration. The gold shows an apparent association with component 3 which was dominated with Ti, V, As, Pb, Zr, and W, component 3 along with cluster 2 and 3 therefore represents the geology of the sheared granitoid that primarily composed of quartz, plagioclase, hornblende and biotite with accessory minerals of titanite, zircon and magnetite. Pb, W, and Ar were therefore identified as the pathfinder elements for the gold. Keywords: Pathfinder Elements, Gold, Geochemical Exploration, Geology, Geostatistics, Julie Belt, Ghana. Title: Geostatistical Analysis of Gold Multi-Element Associations using Soil Geochemical Data from Julie Belt, Northwest Ghana Author: Umar Sambo Umar, Prosper Mackenzie Nude, Prince Ofori Amponsah, Ahmad Isah Haruna International Journal of Mathematics and Physical Sciences Research ISSN 2348-5736 (Online) Research Publish Journals

Abstract: In this article, we study the problem of quantum dynamics with neutral cold atom in two different kinds of external field configurations. We demonstrate in the presence of a configuration of crossed radial electric and uniform magnetic fields or in the presence of a configuration of crossed radial magnetic and uniform electric fields the induced electric dipoles in a system of neutral cold atoms have a quantization similar to the Landau Levels. The energy levels and eigenfunctions are obtained. Keywords: cold atom, electric dipole moment, field configuration. Title: The Study of Quantum Dynamics of Neutral Cold Atom in Different External Field Configurations Author: Pandeng Shi International Journal of Mathematics and Physical Sciences Research ISSN 2348-5736 (Online) Research Publish Journals