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Search Results: 1 - 10 of 2238 matches for " Abu Nurudeen "
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Does Stock Market Development Raise Economic Growth? Evidence from Nigeria
Abu Nurudeen
Review of Finance and Banking , 2009,
Abstract: This paper investigates whether stock market development raises economic growthin Nigeria, by employing the error correction approach. The econometric results indicate thatstock market development (market capitalization-GDP ratio) increases economic growth.The recommendations therein include: removal of impediments to stock market developmentwhich include tax, legal, and regulatory barriers; development of the nation’s infrastructureto create an enabling environment for where business can strive; employment of policies thatwill increase the productivity and efficiency of firms as well encourage them to access capitalon the stock market; enhancement of the capacity of the Nigeria Security and ExchangeCommission to facilitate the growth of the stock market, restore the confidence of stockmarket participants and safeguard the interest of shareholders by checking sharp practicesof market operators (particularly speculators).
Saving-Economic Growth Nexus In Nigeria, 1970-2007: Granger Causality And Co-Integration Analyses
Nurudeen ABU
Review of Economic and Business Studies (REBS) , 2010,
Abstract: The controversy surrounding the direction of causality between saving and economic growth motivated this study. The author employed the Granger-causality and co-integration techniques to analyze the relationship between saving and economic growth in Nigeria during the period 1970-2007. The Johansen co-integration test indicates that the variables (economic growth and saving) are co-integrated, and that a long-run equilibrium exists between them. In addition, the granger causality test reveals that causality runs from economic growth to saving, implying that economic growth precedes and granger causes saving. Thus, we reject the Solow’s hypothesis that saving precedes economic growth, and accept the Keynesian theory that t is economic growth that leads to higher saving. The author recommends that government and policy makers should employ policies that would accelerate economic growth so as to increase saving.
Government Expenditure And Economic Growth In Nigeria, 1970-2008: A Disaggregated Analysis
Abu Nurudeen
Business and Economics Journal , 2010,
Abstract: The paper observes that rising government expenditure has not translated to meaningful development as Nigeria still ranks amongworld’s poorest countries. In an attempt to investigate the effect of government expenditure on economic growth, we employed adisaggregated analysis. The results reveal that government total capital expenditure (TCAP), total recurrent expenditures (TREC), andgovernment expenditure on education (EDU) have negative effect on economic growth. On the contrary, rising governmentexpenditure on transport and communication (TRACO), and health (HEA) results to an increase in economic growth. The authors’recommendations include among others the following. Government should increase both capital expenditure and recurrentexpenditure, including expenditures on education, as well as ensuring that funds meant for the development of these sectors areproperly managed. Secondly, government should increase its investment in the development of transport and communication, inorder to create an enabling environment for business to strive. Thirdly, government should raise its expenditure in the developmentof the health sector since it would enhance labour productivity and economic growth. Lastly, government should encourage andincrease the funding of anti-corruption agencies in order to tackle the high level of corruption found in public office.
Abu NURUDEEN,Obida Wafure GOBNA,Abdullahi USMAN
Revista Roman? de Statistic? , 2010,
Abstract: This paper examines the causal links between foreign direct investment and economic growth in Nigeria during the period 1970-2008. The authors employed the Granger causality and Johansen co-integration techniques to analyze the relationship and direction of causality between the variables. The Johansen co-integration statistic indicates that the variables are co-integrated, and the granger causality statistic reveals a unidirectional causality running from foreign direct investment to economic growth.
Influence of Degree of Cold-Drawing on the Mechanical Properties of Low Carbon Steel  [PDF]
Nurudeen A. Raji, Oluleke O. Oluwole
Materials Sciences and Applications (MSA) , 2011, DOI: 10.4236/msa.2011.211208
Abstract: Low carbon steel metal is used for the manufacture of nails. Steel wire with <0.3% C content is cold-drawn through a series of drawing dies to reduce the diameter of the wire to the required diameter of the nails. A 0.12%w C steel wire cold drawn progressively by 20%, 25%, 40% and 50% was investigated. The influence of the degree of cold drawing on the mechanical properties of the carbon steel material were studied using the tensile test, impact test and hardness test experiments in order to replicate the service condition of the nails. The tensile test was done on a Montanso® tensometer to investigate the yield strength and the tensile strength of the material as the degree of deformation increases. An Izod test was used to determine the impact toughness of the steel using the Hounsfield impact machine and the hardness numbers were obtained for the different degrees of drawn deformation of the steel on the Brinnel tester. The study used the stress-strain relationship of the tensile test experiment to study the effect of the degree of cold-drawing deformation on the yield strength and tensile strength properties of the low carbon steel. The yield strength of the material was observed to reduce with increasing degree of cold-drawing, an indication of reduction in the ductility and the tensile strength of the material reduced with increasing degree of cold-drawn deformation. The ability of the material to resist impact loads when nails are hammered reduced with increasing degree of drawn deformation as a result of strain hardening of the material after the drawing operation. However the resilience of the material to further cold drawn deformation increased with increasing degree of deformation as evident in the Brinnel hardness number which increases with the degree of drawing deformation. This is an indication of the material’s approach to brittleness as the degree of drawn deformation increases.
Effect of Soaking Time on the Mechanical Properties of Annealed Cold-Drawn Low Carbon Steel  [PDF]
Nurudeen Adekunle Raji, Oluleke Olugbemiga Oluwole
Materials Sciences and Applications (MSA) , 2012, DOI: 10.4236/msa.2012.38072
Abstract: The paper presents the results of investigation on the effect of soaking time on the yield strength, ductility and hardness properties of annealed cold-drawn low carbon steel. The low carbon steel cold-drawn at 40% deformation was annealed at 900 deg Celsius for soaking times of 10, 20, 30, 40, 50 and 60 minutes. Tensile, charpy and Brinnel hardness tests were conducted to determine the yield strengths, tensile strengths, impact strengths, ductility and hardness of the annealed steel with increasing soaking time. The yield strength, tensile strength, hardness and impact strength of the steel showed a continuous drop in value with increasing soaking time up to 60 minutes with a steep drop between 30 and 40 minutes. Ductility values followed the same decreasing trend up to 40 minutes soaking time after which the values started increasing again till 60 minutes soaking time. There was a linear relationship between the tensile strength and hardness of the material for different soaking times. This linear relationship was also observed for yield strength and hardness of the material.
Recrystallization Kinetics and Microstructure Evolution of Annealed Cold-Drawn Low-Carbon Steel  [PDF]
Nurudeen A. Raji, Oluleke O. Oluwole
Journal of Crystallization Process and Technology (JCPT) , 2013, DOI: 10.4236/jcpt.2013.34025

The recrystallization behavior of cold-drawn 0.12 wt% C steel during annealing at temperatures 600°C and 650°C was investigated. Hardness tests were used to characterize the recrystallization kinetics. The micrographs of the steel were obtained using optical microscopy (OM) to characterize the grain microstructure of the non-treated and the annealed steel samples. Annihilation of dislocation defects occur within the soaking time of 5 - 10 minutes for all the deformed steel after annealing at 650°C. Specifically at 5 minutes soaking time the grains elongation is still observed indicating that reformation of grains is not taking place but recovery of the deformed grains. At the 10 minutes annealing time, new grains are observed to begin and full recrystallization is achieved at 15 minutes annealing time. At annealing time between 20 - 25 minutes, grains coarsening are observed indicating the onset of grain growth. The hardness of the material reduces with increasing annealing temperature for all the degree of cold drawn deformation. On the basis of the experimentally obtained hardness values, recrystallization increases with increasing degree of cold drawn deformation for the annealed steel. Recovery process was found to prolong in the 20% cold drawn steel as compared to the 55% cold drawn steel. The prolong recovery process is due to reduction in the driving force. Full recrystallization of the annealed steel is achieved at different soaking time depending on the degree of the cold drawn steel.

Optimization of the Annealing Parameters for Improved Tensile Properties in Cold Drawn 0.12 wt% C Steel  [PDF]
Nurudeen A. Raji, Oluleke O. Oluwole
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.511106

Drawn low carbon steel is characterized by brittle fracture. These defects are associated with the poor ductility and high strain hardening due to the cold work. There is a need therefore to determine optimum heat treatment parameters that could ensure improved toughness and ductility. Determining the optimum annealing parameters ensures valued recrystallization and also minimizes grain growth that could be detrimental to the resulting product. 40% and 55% cold drawn steels were annealed at temperatures 500℃ to 650℃ at intervals of 50℃ and soaked for 10 to 60 minutes at interval of 10 minutes to identify the temperature range and soaking time where optimum combination of properties could be obtained. Tensile test and impact toughness experiments were done to determine the required properties of the steel. Polynomial regression analysis was used to fit the properties relationship with soaking time and temperatures and the classical optimization technique was used to determine the minimum soaking time and temperature required for improved properties of the steel. Annealing treatment at 588℃ for 11 minutes at grain size of 44.7 mm can be considered to be the optimum annealing treatment for the 40% cold drawn 0.12 wt% C steel and 539℃ for 17 minutes at grain size of 19.5 mm for the 55% cold drawn 0.12 wt% C steel.

Nurudeen Ayoyinka Jatto
Russian Journal of Agricultural and Socio-Economic Sciences , 2012,
Abstract: The paper analyzed the economics and social characteristics of registered poultry egg producers in Ilorin, Kwara State. Primary data was used for the study. The data was collected using structured questionnaires administered to 150 stratified sampled registered poultry egg producer. Both descriptive and gross margin analysis were employed to analyze the data. Socio-economic analyses revealed that 68.7% of the poultry egg farmers were males with a mean age of 40 years and 78% having tertiary education with a mean year of poultry experience of 7years. 76.7% were married with a mean family size of 4. Majority (53.3%) of the farmers were civil servant with a mean farm size of 334 number of birds and 50% of the farmers have been participating in cooperative society for over 6 to 10 years with majority (84.7%) having no extension contact. The gross margin calculated shows that the farms had an average margin of N3,652 per bird per year and the net average revenue of N3,024 per bird per year showing that poultry egg production is profitable. It was recommended that government should endeavour to subsidize inputs such as feed ingredients and this can be achieved through poultry farmer's participation in crop production.
“Digital Classroom”: An Innovative Teaching and Learning Technique for Gifted Learners Using ICT  [PDF]
Abu Yazid Abu Bakar
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.71006
Abstract: Gifted student population is a group of individuals with specific and unique learning needs. Due to their uniqueness, the students always face problems in mainstream educational system. Teachers of gifted students need to be proactive and creative in preparing their teaching plans, methodologies, and materials, in order to ensure that the learning process is going to be effective to the students. This article discusses the concept of “digital classroom”—an innovative technique using integration of information and communication technology (ICT)—used at the “laboratory school” of National Gifted Center, Universiti Kebangsaan Malaysia as teaching and learning strategy for local gifted students. The teachers integrate the use ICT such as the electronic mail, social media applications, and online learning portals as platforms to effectively teach the students. In comparison to the conventional way of teaching, this technique creates a borderless classroom which enables the students to freely explore knowledge without limit or boundary.
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