The impacts of extremely high temperatures on plants, human beings and animals’ health have been studied in several parts of the world. However, extreme events are uncommon and have only attracted attention recently. In this study, extreme temperature behaviour was modelled through the application of extreme value theory using maximum monthly temperatures over a 32 years period. Data on monthly maximum temperature from the Upper East Region were modelled using generalized extreme value (GEV...
The inverted Kumaraswamy distribution has a drawback in modeling lifetime data which show non-monotone failure rates. Thus, a new class of distributions called power series inverted Kumaraswamy distribution was developed by compounding the inverted Kumaraswamy distribution with zero truncated power series distribution with the goal of making it more flexible. The new class of distributions were developed using the stochastic representation Z min (T1,T2 ,...TN ) which is the time to the fi...
Erectile dysfunction is defined as the continuous inability of a man to attain a satisfactory erection for a successful sexual intercourse. Female sexual dysfunction is also defined as the inability of a woman to enjoy a complete sexual activity. A twoway between groups MANOVA was performed to investigate whether there is a significant difference between male and female, and married and single. Five dependent variables were used: age, creatinine levels, duration of diabetes, glucose levels an...
A new class of distributions, called complementary power series exponentiated Nadarajah-Haghighi distribution was developed in this study by compounding the exponentiated Nadarajah-Haghighi distribution with zero truncated power series distributions. The new class of distributions were developed using the concepts of latent complementary risk scenario, in which the lifetime associated with a particular risk is not observable; rather we observe only the maximum lifetime value among all risks. ...
Pregnancy Induced hypertension (PIH) is a global concern that affect pregnant women usually after 20 weeks of gestation. It accounts for 5 to 10% of all pregnancies in relation to haemorrhage and infections. Clinicians and researchers are finding it difficult to comprehend the primary cause of this anomaly. The Upper East Region of Ghana has witnessed an upsurge in maternal mortality in 2016 and 2017 due to this precarious situation. Hence the need to investigate on some of the perceived risk...
This study was undertaken to examine the nature and quantify the magnitude of Genotype by Environment interaction effects on rice (Oryia Sativa L.) grain yield and to determine the most stable and winning genotype (s) in terms of yield stability and performance in two rice producing hubs. The study was conducted at four locations within two rice producing hubs in Northern Ghana on fifteen (15) rice genotypes including a checking genotype GR18 red. A randomized complete block design with three...
The study focused on the assessment of stakeholders participation as a determinant for effective land use plans implementation in the Tamale Metropolis of Northern Region of Ghana. Primary data was then collected from households and institutions and analyzed. The study revealed that those factors such as leadership qualities, transparency, resources availability and centralization of decisions affect successful stakeholders’ participation in implementation of land use plans. The benefits of...
Breast cancer is the most frequently diagnosed cancer and the leading cause of cancer death in female's worldwide. The objective of the study was to identify and describe breast cancer survival pattern in Ghana and factors that explain the disparity in survival rates for breast cancer by the use of Cox proportional hazard. The extent to which selected demographic, hormonal and reproductive factors influence the cause of breast cancer were also examined using the logistic regression technique ...
Abstract Rearing chicken has contributed positively to global nutrition, especially egg production. This practice attracts both large and small-scale poultry keeping within the world’s economy. Egg storage has been a problem due to ineffective methods subjecting many farmers and egg retailers to losses. These methods include various models involving statistical analysis of the storage conditions on the egg quality. However, they do not provide sufficient information. Therefore, confusion p...
Abstract This study is a critical review of theoreticalissues that underline the linear mixed effects (LME) and nonlinear mixed effects (NLME) models. These two areas are revisited under maximum likelihood and restricted maximumlikelihood estimation frameworks. We also review methods of estimating parameters in both linear and nonlinear mixed effects models. In the case of LME, we consider different ways of developing the likelihood estimators, key among these methods are the “pseudo-data�...
Abstract/Overview During the Later Iron Age period in Kenya, communities that built structures known in the local language as ohingni (singular - ohinga)' occupied the Lake Victoria region in south-western Kenya. The term refers to both stone-built and earth-built settlement enclosures widely distributed in the Nyanza region, that were abandoned before and during the colonial period. Their distribution and contents, in terms of archaeological remains and use of space, indicate that they w...
Abstract Girls’ retention in schools has been found to be a major challenge. Failure to retain girlsin secondary schools can be considered as a waste of potential human resources andmoney spend on them in primary education and time lost in sending them to schoolin the first place. These girls may become a breed of illiterate women who are lessproductive economically, socially and politically. Among the critical contemporary socialissues affecting many countries is teenage pregnancies. This...
This is an industrial attachment report done at Kenya Marine Fisheries and Research Institute (KMFRI).
The importance of the US Dollar to a mono economy and import dependent nation such as South Africa cannot be over emphasized in the most notable transactions that takes place in any economic process must have a direct or indirect connection with the dollars. The aim of the study is to find the relationship between American dollar and South African rand. The statistical relationship between inflation and petrol price were investigated using secondary data. The correlation coefficient...
Inflation is one of the basic indicators of macroeconomic stability, influences numerous other macroeconomic factors and it debilitates the economy of the country. Thus, in this study, the major objective was based on modelling and forecast inflation in Ethiopia and its components using a VAR model. all five series exhibited an increasing pattern, indicating non-stationarity in each of the series. The analysis was based on annually data from 1992 to 2021, encompassing 30 years. The results in...