50 research outputs found
Improved Method for the Estimation of Minimum Miscibility Pressure for Pure and Impure CO2–Crude Oil Systems Using Gaussian Process Machine Learning Approach
No full textThe minimum miscibility pressure (MMP) is one of the critical parameters needed in the
successful design of a miscible gas injection for enhanced oil recovery purposes. In this
study, we explore the capability of using the Gaussian process machine learning
(GPML) approach, for accurate prediction of this vital property in both pure and impure
CO2-injection streams. We first performed a sensitivity analysis of different kernels and
then a comparative analysis with other techniques. The new GPML model, when
compared with previously published predictive models, including both correlations and
other machine learning (ML)/intelligent models, showed superior performance with the
highest correlation coefficient and the lowest error metrics
Predictive modeling of gas production, utilization and flaring in Nigeria using TSRM and TSNN: a comparative approach
No full textSince the discovery of oil and gas in Nigeria in 1956, much gas has been flared because the operators pay little or no concern to its utilization, and as such, trillions of dollars have been lost. In this paper, a model is proposed using Time Series Regression Model (TSRM) and Time Series Neural Network (TSNN) to model the production, utilization and flaring of natural gas in Nigeria with the ultimate aim of observing the trend of each activity. The results show that TSNN has better predictive and forecasting capabilities compared to TSRN. It is also observed that the higher the hidden neurons, the lower the error generated by the TSNN
O PAPEL DA NIGÉRIA NA EXPULSÃO/RETIRADA DA ÁFRICA DO SUL DA COMUNIDADE DAS NAÇÕES
No full textNigeria’s commitment to the anti-apartheid struggle had been made absolutely clear even before it attained its independence on October 1st, 1960. Following the Sharpeville massacres of March 21st, 1960, when South African police shot and killed 72 blacks and wounded 184, there was a general consensus among all Nigerian political parties, as well as the regional and federal governments, that decisive actions should be taken against the Pretoria regime in order to force that regime to change its abominable apartheid policy. This event marked the beginning of Nigeria’s confrontation against white South Africa. Nigeria demanded and spearheaded the forceful expulsion/withdrawal of South Africa from the Commonwealth by mobilizing other black African countries in isolating South Africa in such a way that it would realize the absurdity of its racist policies. It is against this background that this paper assesses Nigeria’s role in the expulsion or forceful withdrawal of South Africa from the Commonwealth of Nations.O compromisso da Nigéria com a luta anti-apartheid havia sido deixado absolutamente claro antes mesmo de alcançar sua independência, em 1º de outubro de 1960. Após os massacres de Sharpeville de 21 de março de 1960, quando a polícia sul-africana atirou e matou 72 negros e deixou 184 feridos, houve um consenso geral entre todos os partidos políticos nigerianos, assim como os governos regional e federal, de que ações decisivas deveriam ser tomadas contra o regime de Pretória para forçar esse regime a mudar sua abominável política de apartheid. Este evento marcou o início do confronto da Nigéria contra a África do Sul branca. A Nigéria exigiu e liderou a forte expulsão/retirada da África do Sul da Comunidade das Nações, mobilizando outros países africanos negros para isolar a África do Sul de tal forma que ela perceberia o absurdo de suas políticas racistas. É neste contexto que este trabalho avalia o papel da Nigéria na expulsão ou retirada forçada da África do Sul da Comunidade das Nações
Lecturers’ Awareness and Readiness towards the Adoption of Open Educational Resources for Teaching in Tertiary Institutions in Niger State, Nigeria
No full textThis study investigated attitudes and self-efficacy towards the utilization of interactive whiteboards (IWB) among university lecturers in North Central, Nigeria. A descriptive survey research design was employed for the study and 315 participants were selected through a multi-stage sampling technique. Four research questions and two null hypotheses guided the study and a 20-item questionnaire was used as an instrument for data collection. The questionnaire was subjected to both validation and reliability checks. Data obtained from the administration of the research instrument were analysed using descriptive statistics of Mean and Standard Deviation for research questions and inferential statistics of z-test for research hypotheses. A decision rule was set, in which a mean score of 2.5 and above was considered agreed, while a mean score below 2.5 was considered disagreed. Findings revealed that lecturers’ attitudes and self-efficacy towards the utilization of interactive whiteboards (IWB) were positive with a mean score of 3.02 and 2.70 out of possible 4.0. Also, gender as a moderating variable had an influence on lecturers’ attitude and self-efficacy towards utilization of interactive whiteboard. Based on these findings, it was recommended among others that lecturers in tertiary institutions should be encouraged to adopt Interactive Whiteboard in order to enhance their teaching. This can be achieved through the provision of enabling work environment that supports the use of information and communication technology in the teaching and learning process
Countering Terrorism and Criminal Financing in Nigeria: Strategic Options
No full textEste trabajo analiza los esfuerzos de Nigeria para contrarrestar la financiación del terrorismo y la criminalidad. Muestra que las organizaciones criminales y terroristas en el país costean sus operaciones a través de una infraestructura financiera ilegal incrustada en el sector financiero del país. Para contrarrestar y negar el acceso a estos actores no estatales malignos a fondos que podrían usarse para desestabilizar el estado y comprometer la integridad de las instituciones financieras, Nigeria ha implementado varias estrategias. Al utilizar una metodología de investigación cualitativa y un enfoque histórico, descriptivo y narrativo, se descubrió que Nigeria ha utilizado instituciones gubernamentales, como la Comisión de Delitos Económicos y Financieros (EFCC) y la Unidad de Inteligencia Financiera de Nigeria (NFIU), e instrumentos financiero-legales, como la Ley (de Prevención) (Enmienda) del Terrorismo (TPAA) y la Ley contra el Lavado de Dinero/Lucha contra el Financiamiento del Terrorismo (AML/CFT), para interrumpir el flujo de financiación al terrorismo y la criminalidad en el país. En su conclusión, el trabajo argumenta que Nigeria tendrá que ser estratégica en su respuesta si espera contrarrestar efectivamente la financiación del terrorismo y la criminalidad. Esta respuesta estratégica, según evidencia la investigación, implicará el uso extensivo de la experiencia técnica y financiera de organismos internacionales contra el lavado de dinero como el Grupo EGMONT y el Grupo de Acción Financiera Internacional (GAFI).This work analysis Nigeria’s effort to counter terrorism and criminal financing (TCF). It shows that criminal and terrorist organizations in fund their operations through an illegal financial infrastructure embedded in the Nigerian financial sector. To counter and deny access to funds that could be used to destabilize the state and compromise the integrity of financial institutions in the country to these malign non-state actors, Nigeria has deployed several strategies. By using qualitative research methodology, and a historical, descriptive, and narrative approach, it was discovered that Nigeria has used both government institutions, such as the Economic and Financial Crimes Commission (EFCC) and the Nigerian Financial Intelligence Unit (NFIU) and legal-cum financial instruments, such as the Terrorism (Prevention) (Amendment) Act (TPAA) and the Anti Money Laundering/Combating Financing of Terrorism (AML/CFT), to disrupt TCF in the country. In its conclusion, the work argues that Nigeria will have to be strategic in its response if it hopes to effectively counter TCF. This strategic response, this work show, will involve the extensive use of technical and financial expertise from international anti-money laundering bodies like the EGMONT Group and the Financial Action Task Force (FATF)
Effect of Drilling Cuttings Transport on Pressure Drop in a Flowing Well
No full textCuttings transport has a major impact on the economics of the drilling process. It is one of the major factors affecting cost, time and quality of drilling wells. In spite of the many technological advances that have attempted to prevent the cuttings transport along the fluid, one significant challenge remains predicting the effect of cutting transport on pressure drop. Many interdependent variables affect cuttings transport and the complexity of the phenomena present challenges to the production engineer whose tries to determine how the cuttings transport affect the pressure in vertical flow.
Meanwhile, many correlations have been developed to determine the effect of cutting transport in vertical flow but there is little information related to effect of cuttings transport on pressure drop and cutting hold up along the vertical pipe.
This paper presents comprehensive details of effect of cutting transport on pressure drop and the detrimental effect of drill cutting hold-up on fluid flow along the vertical pipe
Attitudes and practices towards abate application in a village in Akinyele local government area of Oyo State, Nigeria
No full textA study was carried out in Oyeteju Village in Akinyele Local Government Area of Oyo State to determine attitudes of the villagers to treating their drinking pond with Abate (Temephos). The findings showed that all women respondents fetched all their drinking water from the village pond. They all claimed to filter the drinking water, 83.3% claimed to add alum while 25% claimed to boil water. Only 75% knew why Abate was applied to pond despite previous education on Abate. 41.7% support Abate application because it will kill the guineaworm 'germs’ in water while 25% Support it because it will bring about good health to villagers. All the respondents claimed not to be affected by the application of Abate to pond water despite the fact that 33.3% said the pond water turned black while 8.3% said it turned reddish. Their strong belief in their pond which is their god and the colour change did not make the villagers go against the application of Abate to their pond. This was so because health education on Abate preceded its application. It was unfortunate however that the Abate application was not sustained in the village. Abate application in this village was accepted as a temporary measure while villagers wait expectantly for their own safe source of water preferably a borehole. The study shows the need for health education to proceed the application of Abate and the need to train villagers on how to apply the Chemical in order to sustain the application for effective control
Students’ grading and evaluation: a critical review
No full textIn the last 20 years, schools have experienced many changes in academic standards, curriculum, and evaluation. Oftentimes the term evaluation frequently has a negative connotation to learners. This has adversely affected their performances and eventual final grading. Students rarely view their evaluations as opportunities for improvement even though better performance and public accountability are the principal aims of education. Instead, evaluations are seen by learners as hurdles grounded in threat. Evaluations are barriers that channel learner thinking and behavior, frequently motivated by fear of failure, with adverse consequences for those who fall short. Such learner perceptions contrast with faculty intent where evaluation is considered a tool needed to boost student competence and protect the public. Nonetheless, learners perceive the stakes to be high and so is their anxiety. Evaluation is a process to which most learners grudgingly submit to. It is rarely a process they seek and enjoy. This paper seeks to project educational evaluation as a tool, not as a weapon, for the purpose of improvement and mastery rather than enforcement. This outlook is expected to change the psychological climate toward constructive progress instead of apprehension
Exploring Opportunities for Indigenous Participation in the Implementation of the Nigerian Gas Master Plan
No full textAbstract
The involvement of Indigenous Entrepreneurs and Host Communities in the Implementation of the Gas Master Plan will have far reaching effects on the Nigerian Economy. The consequences of the neglect of this crucial element in the Oil side of the business are well known – enclave nature of the Industry with no multiplier effect on the rest of the economy, virtual control of a strategic sector that generates over 80% of total revenue in the hands of competing IOCs with a multiplicity of interests, little technology transfer and minimal Human Capacity Development. Wide spread alienation and agitation for Resource Control manifested over time and the Country is just now struggling to contain the damaging effects on the Oil & Gas Industry. These mistakes need not be repeated in the Emerging Gas business.
Three stakeholder Groups were identified in the consideration of opportunities for Indigenous participation: The Indigenous Entrepreneur, the Host Community Contractor and the Host Community Residents. The segmentation of the different Stakeholder Groups is deemed necessary in order to focus on the specific interests of each Group.</jats:p
