Factors determining the success of public private partnership projects in Nigeria

The implementation of public private partnership (PPP) procurement method is expected to help governments in the development of infrastructures and provides an opportunity for the reduction in the governments’ debt profiles. This method has been adopted in Nigeria for more than a decade and with these years of implementation, few infrastructural projects have been developed using this method while some have been unsuccessful. This study aims to examine the PPP projects implementation in Nigeria and identify the most critical factors that could determine the success of such projects. A total of 184 questionnaires were received from public and private sectors’ participants in the implementation of PPP projects. An exploratory factor analysis identified seven critical success factors as projects feedback, leadership focus, risk allocation and economic policy, good governance and political support, short construction period, favourable socio-economic factors, and delivering publicly needed service. This study shows that more developmental projects could be delivered through PPP if the government could focus on these main factors in the implementation process. The result will influence policy development towards PPP and guide the partners in the development of PPP projects.

Developing Student Worksheet In English Based On Constructivism Using Problem Solving Approach For Mathematics Learning On The Topic Of Social Arithmetics

The purpose of this paper is to describe the development of student worksheet in English based on constructivism using problem solving approach for mathematics learning on the topics of social arithmetic, and its quality. The development of the student worksheet follows ADDIE model, there are: analyze, design, development, implementation, and evaluation. The instruments of the research are validation questionnaire, student response questionnaire, learning observation sheet, teacher interview, and test. The development process of student worksheet is: 1) analyze: need analyze, student analyze, and task analyze, 2) design: determining the component of the student worksheet based on analyze phase, 3) development: writing the student worksheet, doing expert validation, and revising student worksheet based on the validation, 4) implementation: implementing the learning process using student worksheet to examine its effectiveness and practicality, 5) evaluation: analyzing its effectiveness and practicality, and revising the student worksheet. The quality of student worksheet is: 1) the level of validity is 4,01, of 5 scales (valid), 2) the level of effectiveness is 80,56% (very effective based on student test), 3) the level of practicality are 81,6% (practice based on learning process observation), and 3,03 of 4 scales (practice based on student response). Keywords: student worksheet, constructivism, problem solving, social arithmeti

Well Test Analysis in Volatile Oil Reservoirs

This thesis discusses characterization of volatile oil reservoirs using well test analysis. For this purpose, typical well test behaviours were simulated with a one-dimensional single well compositional reservoir model, for different production rates; fluid composition and relative permeability curves, with bottomhole pressures above and below the bubble point pressure. It was found that, when the bottomhole pressure falls below the bubble point pressure during a drawdown, a high gas saturation zone is created around the wellbore with two-phase (oil and gas) flow, whereas single phase (oil) with the initial gas saturation remains away from the wellbore. During the subsequent build up, the gas created around the wellbore during the preceding drawdown condenses into the oil and the saturation in the near-wellbore region returns to the initial gas saturation. The log-log pressure-derivative behaviours below the bubble point correspond to a twozone radial composite model, with decreasing mobility during drawdowns and increasing mobilities during build ups. The log-log pressure derivative plot of the build up reflects oil mobility distribution of the reservoir at the end of the preceding drawdown. Knowledge obtained from the study was applied to the analysis of a well test in an actual volatile oil reservoir. Analysis results were validated with compositional reservoir simulation that included the effect of capillary number and non-Darcy flow. Finally, factors affecting well deliverability in volatile oil reservoirs producing at flowing bottomhole pressure below bubble point pressure were studied. The result shows that end point relative permeability of oil phase and oil fluid composition are the most important factors affecting productivity of volatile oil reservoirs producing below bubble point pressure. This study suggests in volatile oil reservoirs, both vertical hydraulic fractures and horizontal wells are best implemented early in the wells life to delay the time when the flowing bottomhole pressure drops below the bubble point pressure, hence improving ultimate recovery.Imperial Users onl

Contribution of women to fisheries development in Kainji Lake basin

The study was carried to examine the contribution of women to fisheries development in the Kainji basin. The sample was drawn in some of the major fishing villages in the sub strata of the basin. A total of 120 respondents were used. The findings revealed that women were involved in fisheries activities most especially in the processing and marketing aspects. Many of the respondents happened to be wives of the fishermen. Few bought fishing equipment with a special arrangement for the supply of fish while some buy from fishermen. This revealed the willingness of the women to be empowered in the economic activities in the area to meet some basic household. Major constrains to the women in this area were the scarcity of fish, no support from the government or private agencies. Recommendations were made on how to enhance women participation in fisheries developmen

A Model for the Design and Development of a Science and Technology Park in Developing Countries

This paper presents an appropriate model for Science and Technology Parks (STPs) with a view to helping policy makers and STP managers implement and manage STPs. The authors reorganize and prioritize the Cabral-Dahab Science Park Management Paradigm. We identify three critical groups of actors (determinants, reactors and executors) and develop four sub-models from different trajectories of the groups of actors. We place more emphasis on the “determinants” as the most important actors in the establishment and management of STP. A critical evaluation of the sub-models reveals that the sub-model in which government, industry and university/research institutes are all jointly involved in decisive policy direction is the most appropriate for the developing country. The paper concludes that economies in transition should see STPs as having a distinctive organizational structure as a result of its myriads of collaborations and partnerships.Enterprise Development; Science and Technology Park; Model; Developing countries; Cabral-Dahab Paradigm; Determinants; Management

Evaluation of maize-soybean flour blends for sour maize bread production in Nigeria

Examination of the functional properties of three different flours/meals and two blends of maize meal and soybean-flour (ratios 9:1 and 8:2, maize:soybean) were carried out. Properties examined included amylose content, bulk density, dispersibility, swelling power, water absorption capacity and viscoelastic properties. The effect of the different flour/meal samples on the properties of sour maize bread were evaluated by baking bread samples with the different flours/meals using a mixed starter culture of Lactobacillus plantarum and Saccharomyces cerevisiae. All flour/meal samples differed, sometimes significantly (p 0.05) in their functional properties. Significant positive correlations existed among the functional properties of the flours at the 1% level (2-tailed). The maize meal/soy flour blends MSA (maize meal and soybean flour mixed in ratio 9:1) and MSB (maize meal and soybean flour mixed in ratio 8:2) did not differ significantly from each other in functional properties except for amylose content. MSA was adjudged the best flour blend for sour maize bread production as its bread had the highest score for overall acceptability (6.1) and other sensory parameters evaluated

Inhibitive effect of ferrous gluconate on the electrochemical corrosion of aluminium alloy in H2SO4 solution

The use of ferrous gluconate as corrosion inhibitor on aluminium alloy in 0.5M H2SO4 solution was studied using gravimetric and potentiodynamic polarization measurements. The surface morphology of the aluminium alloy was studied after exposure to 0.5 M H2SO4 solution in the presence and absence of inhibitor using high resolution scanning electron microscopy equipped with energy dispersive spectroscopy (HRSEM – EDS). The adsorption behaviour of the inhibitor was investigated. The results of the investigation show that increase in concentration of ferrous gluconate corresponds to an improvement on inhibition efficiency. Equally, the results showed the ferrous gluconate to be an effective corrosion inhibitor for the aluminium in the acidic medium. The results obtained from the two methods used were found to correlate with each other