212 research outputs found
Effect of Financial Liberalization on the Performance of Informal Capital Market
This study examines the effects of financial liberalization on the corporate performance of informal capital market in Nigeria {Unity (IFE) NUT Cooperative Investment and Credit Society as a case study}. It employs the Ordinary Least Square method of multiple regression analysis for the period of ten years (2001-2010). Three models were formulated, the first, proxied financial liberalization variable (saving rate) with loan granted by informal capital market in Nigeria and saving mobilized by the market. The second, revealing a relationship between financial liberalization variable (lending rate) with deposit mobilised by informal capital market in Nigeria and loan granted by the market while the last, depicting relationship between financial liberalization variables (saving and lending rates), deposit mobilised with loan granted by informal capital market in Nigeria and net surplus of the market (being non-profit making institutions). This work concluded that financial liberalization has significant effect on deposit mobilised and loan granted by the market but did not have significant effect on their net surplus. It therefore, recommends that the market should be supervised, formulate policies that would enhance the performance of informal financial sector in Nigeria coupled with the reduction of the gap between lending and saving rates of banks. Keywords: Financial Liberalization, Informal Capital Market, Unity (IFE) NUT Cooperative Investment and Credit Society, Ordinary Least Square (OLS) Metho
Entropy Generation of MHD Poiseuille Flow with Hall and Joule Heating Effects
In this article investigation has been conducted on the
effects of Hall parameter, rotation parameter and Joule heating on the
entropy generation of fully developed electrically conducting
Poiseuille flow. The coupled system of ordinary differential
equations for the flow are obtained, non-dimensionalised and
solutions are constructed by Adomian decomposition technique. The
effects of Hall current, Ion-slip, Joule heating and magnetic
parameters on the velocity, temperature, entropy generation and
Bejan number are explained and shown graphically. The results
indicate that fluid entropy generation is induced by increase in Hall
current, rotation and Joule heating parameters. Furthermore Bejan
number is accelerated by Hall current, rotation, Magnetic and Joule
heating parameters which signifies that heat transfer irreversibility
dominates entropy generation
Hall Current and Ion-Slip Effects on the Entropy Generation of Couple Stress Fluid with Velocity Slip and Temperature Jump
In this work, analytical study of Hall current and Ion-slip effects on the rate of entropy generation of couple stress fluid is considered. The obtained partial differential equations governing the flow are reduced to ordinary differential equations by similarity variables, semi-analytical solution of the dimensionless nonlinear coupled differential equations for velocity, temperature, entropy generation and Bejan number are constructed using Differential Transform Technique. Effects of Hall current, Ion-slip, couples stress and magnetic parameters are presented and discussed graphically. From the results it is observed that Hall current and rotation parameters enhance secondary velocity, fluid temperature and entropy generation. In addition rarefaction and Hartman number reduce fluid temperature and entropy generation
Efficiency of Histidine Rich Protein II-Based Rapid Diagnostic Tests for Monitoring Malaria Transmission Intensities in an Endemic Area
In recent years there has been a global decrease in the prevalence of malaria due to scaling up of control measures,
hence global control efforts now target elimination and eradication of the disease. However, a major problem associated
with elimination is asymptomatic reservoir of infection especially in endemic areas. This study aims to determine the
efficiency of histidine rich protein II (HRP-2) based rapid diagnostic tests (RDT) for monitoring transmission intensities in
an endemic community in Nigeria during the pre-elimination stage. Plasmodium falciparum asymptomatic malaria
infection in healthy individuals and symptomatic cases were detected using HRP-2. RDT negative tests were re-checked
by microscopy and by primer specific PCR amplification of merozoite surface protein 2 (msp-2) for asexual parasites and
Pfs25 gene for gametocytes in selected samples to detect low level parasitemia undetectable by microscopy. The mean age
of the study population (n=280) was 6.12 years [95% CI 5.16 – 7.08, range 0.5 – 55], parasite prevalence was 44.6% and
36.3% by microscopy and RDT respectively (p =0.056). The parasite prevalence of 61.5% in children aged >2 – 10 years
was significantly higher than 3.7% rate in adults >18years (p < 0.0001, χ2 = 60.45). RDT detected additional 29.6%
asymptomatic cases but a lower specificity of 68.8% in symptomatic carriers. In 15 selected RDT positive samples, only 6
were positive by PCR and no gametocyte was detected. The results indicate that HRP-2 RDTs are a vital tool for
understanding transmission dynamics and detecting immune-suppressed, recent and asymptomatic infections, thus crucial
to tackle low level transmission and eliminating malaria in endemic areas
Bayesian signaling game based efficient security model for MANETs
Game Theory acts as a suitable tool offering promising solutions to security-related concerns in Mobile Ad Hoc Networks (i.e., MANETs). In MANETs, security forms a prominent concern as it includes nodes which are usually portable and require significant coordination between them. Further, the absence of physical organisation makes such networks susceptible to security breaches, hindering secure routing and execution among nodes. Game Theory approach has been manipulated in the current study to achieve an analytical view while addressing the security concerns in MANETs. This paper offers a Bayesian-Signaling game model capable of analysing the behaviour associated with regular as well as malicious nodes. In the proposed model, the utility of normal nodes has been increased while reducing the utility linked to malicious nodes. Moreover, the system employs a reputation system capable of stimulating best cooperation between the nodes. The regular nodes record incessantly to examine their corresponding nodes’ behaviours by using the belief system of Bayes-rules. On its comparison with existing schemes, it was revealed that the presented algorithm provides better identification of malicious nodes and attacks while delivering improved throughput and reduced false positive rate
Investigation of livestock for presence of Trypanosoma brucei gambiense in Tafa Local Government Area of Niger State, Nigeria
The study investigated the presence of Trypanosoma brucei gambiense in livestock to ascertain their reservoir role and also screened for other pathogenic trypanosomes of animals in Tafa Local Government Area of Niger state, Nigeria. A total of 460 livestock comprising (cattle, sheep, goats, and dogs) selected at random were bled, examined using the buffy coat and Giemsa stained thin film and packed cell volume estimated. Questionnaire was filled for each animal on demography, awareness and management practices. An overall prevalence of 2.17% with Trypanosoma brucei, T. congolense, T. vivax and a mixed infection of T. brucei and T. congolense observed microscopically awaiting characterization. Interviews revealed high awareness (82.8%) of tsetse and trypanosomiasis described as bush disease and abortion in four cows. The PCV values were within the normal range, however, a significant decrease (P<0.05) was observed in sheep aged 7months to 4years in two communities. Therefore, the study indicated the presence of T. brucei and other trypanosomes suggesting that animal trypanosomiasis is still a problem to animal health and wellbeing in the study area. The study recommends effective integrated chemotherapy and vector control including livestock rearing under intensive management system to boost livestock production and productivity
Nigeria’s Relations with Her Neighbors and the Fight against Terrorism: An Analysis of the Multinational Joint Task Force
This chapter examines Nigeria’s relationship with her immediate neighboring
countries in the fight against terrorism. It probed the challenges of national
security following the internationalization of Boko Haram terrorist threats,
particularly around the Lake Chad basin, and the responses of countries such
as Cameroon, Chad, and Niger. These countries, like Nigeria, share borders
around the Lake Chad and are the core contributors to the Multinational Joint
Task Force (MNJTF). Nigeria is an English-speaking country (former British
colony), while these other neighbors are historically French colonial territories.
Hence, their political, cultural, military, and economic affinities are with
France. The varying backgrounds have accounted for the challenges in the
subregion including the Boko Haram insurgency and the efforts at military
cooperation in tackling it. Consequently, these questions are examined: what
factors led to the formation of MNJTF and what role has it played in the
counterterrorism strategies of the country? In what ways has the nature of
Nigeria’s relations with these countries impacted on the operation of the
body? What are the roles of external powers such as France with her
domineering influence on these countries in the war against terrorism and how
has it promoted Nigeria’s national security interest? The chapter relies on
documented materials to interrogate the questions and proffer necessary
policy recommendations premised on the findings
From cassava to gari: Mapping of quality characteristics and end-user preferences in Cameroon and Nigeria
User's preferences of cassava and cassava products along the value chain are supported by specific root quality characteristics that can be linked to root traits. Therefore, providing an evidence base of user preferred characteristics along the value chain, can help in the functional choice of cassava varieties. In this respect, the present paper presents the results from focus group discussions and individual interviews on user preferred quality characteristics of raw cassava roots and the derived product, gari, ‐ one of the major cassava products in Sub Saharan Africa ‐ in major production and consumption areas of Cameroon and Nigeria. Choice of cassava varieties for farming is mainly determined by the multiple end‐uses of the roots, their agricultural yield and the processing determinants of roots that support their major high‐quality characteristics: size, density, low water content, maturity, colour and safety. Processing of cassava roots into gari goes through different technological variants leading to a gari whose high‐quality characteristics are: dryness, colour, shiny/attractive appearance, uniform granules and taste. Eba, the major consumption form of gari in Cameroon and Nigeria is mainly characterized by its textural properties: smoothness, firmness, stickiness, elasticity, mouldability. Recommendations are made, suggesting that breeding will have to start evaluating cassava clones for brightness/shininess, as well as textural properties such as mouldability and elasticity of cassava food products, for the purpose of supporting decision‐making by breeders and the development of high‐throughput selection methods of cassava varieties. Women are identified as important beneficiaries of such initiatives giving their disadvantaged position and their prominent role in cassava processing and marketing of gari
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