Category Archives: International Journal of Sciences and Advanced Innovative Research 2018

PRINCIPAL COMPONENTS ANALYSIS OF NIGERIAN ECONOMIC VARIABLES

Eze-Emmanuel, Peace & Ette Harrison Etuk

Department of Statistic

Rivers State University, Port Harcourt

Email: adelepeace678@gmail.com and ettetuk@yahoo.com

ABSTRACT

Principal Components Analysis (PCA) of Nigeria economic variables was done to decide on the most important variables to be considered in determining those variables that have positive effect on Nigerian economy. It is important to determine the significant proportion of those variables that contributed to the Nigerian Gross Domestic Product because it helps reveal especially with regards to revenue generation by the government. This research work examined the performance of these variables using quarterly Nigeria Gross Domestic data from 1981Q1-2013Q4. The methods used are Principal Components Analysis (PCA) and factor analysis (FA) multivariate technique. Using Minitab 17 statistical software, the data were examined; summary statistics are as follows: covariance matrix, correlation matrix, standard deviation, Eigenvalues, Eigenvectors, transformation of the sample onto new subsample (Sorted Unrotated and Rotated Factors), computing the principal components and finally plotting the graphs. Our results showed that 24 economic variables from 31 variables have almost perfect (positive) effect on the economy and identify the  sorted rotated factor loading as the better (appropriate) method, when using economic data variables.

Keywords: Eigenvalues, Eigenvectors, Transformation, Unrotated and Rotated Factors, Principal Components Analysis (PCA) and factor analysis (FA)

ANALYSIS AND COMPARISON OF STRENGTHS AND WORKABILITY OF VIRGIN AND RECYCLED CONCRETE CUBES

Gana A.J& Oladapo E.P.

Department 0f Civil Engineering, Collage of Science and Engineering

Landmark University, Omu-Aran, Kwara state

Emails: doctorgana@yahoo.com, phildebo123@gmail.com

ABSTRACT

This study access the reduction and use of rubble concrete cubes from concrete laboratories, to ensure sustainability which is environmental friendly by concrete recycling which involves the comparison of the strength and workability of virgin and the recycled concrete. Data from developed countries have been obtained and all over developing countries but this report examine the data from North central region of Nigeria specifically Omu Aran, head quarter of Irepodun local government area, Kwara state, Nigeria. Both constructive and destructive tests such as cubes crushing test and Schmidt hammer test are carried out. The slump value for virgin concrete is 280mm and for recycled concrete is 285mm. partially compacted virgin concrete is 11.3kg, fully compacted virgin concrete is 12.5kg and partially compacted recycled concrete is 11.0kg, fully compacted recycled concrete is 12.3kg. Result shows that recycled concrete possess more compressive strength compared to virgin concrete and both are workable as recycled concrete consumes more water to attain desired workability. This study is limited to compressive strength, recommendation for further research is required on the comparison of the flexural strength and workability of virgin and the recycled concrete.

Keywords: Strength, workability, virgin, recycled, concrete, cubes.

DECISION SUPPORT SYSTEM FOR PROMOTING CEMENT SALES IN DANGOTE CEMENT INDUSTRY, OBAJANA-KOGI STATE, NIGERIA

D.U. Ebem¹, J.A. Johnson¹, U.C. Arinze^1*

¹Department of Computer Science, Faculty of Physical Sciences,

University of Nigeria, Nsukka, South-East, Nigeria.

Email: uchechukwu.arinze.pg79296@unn.edu.ng

Corresponding Authors: U.C. Arinze

ABSTRACT

This project work is concerned with the use of an Intelligent Decision Support System for development of Customer-Driven marketing strategies. Intelligent system, if well harness, may provide a day-to-day operational production planning in order to meet the customer’s needs and yearning. In this work, a thorough investigation into the existing system is made and inherent pitfalls identified. A new system is proposed with a model presented which provides the ability to evaluate the capacity for new orders and unforeseen events such as equipment downtime and changes in operation; help managers deal with uncertainty and produce intelligent advice on setting marketing strategy.  The proposed system acts as a decision supports system (DSS) used to augment the task of planners and schedulers to run production more efficiently, thereby invigorate customers services. Various mathematical and statistical tools were used for analyzing the data such as time series model for forecasting and SPSS package to assess the trends of sales. The object oriented programming paradigm is used in the analysis and design. The system is very promising as it offers better customer/manufacturers relationship and strategic plans for outstanding services.

Keywords: Decision Support System, Marketing Strategy, Sales Promotion

ASSESSMENT OF IMPACT OF BUILDABILITY AND MAINTAINABILITYANALYSIS ONBUILDING DELIVERY IN NIGERIA

¹Ihenketu Christopher, ²Iwudibiah Chidi Charles & ³Ebube Ogbonna Christopher

¹Department of Building Technology, Akanu Ibiam Federal Polytechnic, Unwana Afikpo, Ebonyi State

²Department of Building Technology, Imo State Polytechnic, Umuagwo

³Building Technology Department, Auchi Polytechnic, Auchi

E-Mail: xtopherihe@gmail.com

Correspondent author:  Ihenketu Christopher

ABSTRACT

        The process of delivering a project to the owner/client on time, within cost and specified quality standard requires the collaborative efforts of different professionals. More often than not, builders are not involved in the design stage to review the production information produced by these professionals. This does result in designs that are not construction friendly or cost prohibitive in terms of maintenance. Thus, this work is carried out to assess the impact of buildability and maintainability analysis on project delivery. A survey of expert opinion on the impact of buildability and maintainability was conducted. Structured questionnaire was designed and administered to senior high ranking construction professionals in two companies undertaking different building projects; and Relative Importance Index (RII) was used to analyze the collected data. Both projects recorded RII≥0.80 for buildability analysis in “facilitating ease of construction” and “reducing design error”. Both projects also recorded high relevance of RII ≥0.900 for maintainability analysis in reducing maintenance cost, guaranteeing end user satisfaction and increasing the lifespan of the project. From the result of our findings, it is concluded that buildability and maintainability analyses have significant impact on project delivery. The thrust of buildability is at the design stage so as to affect ease in the construction phase; while the thrust of maintainability is at the operation/use phase of the building. Thus, buildability and maintainability assures best performance throughout the life cycle of a building or component. It is therefore recommended that builders should be involved in the design stage so that they can make professional contributions to production information, as this will enhance successful delivery of building projects and satisfaction during operation/use phase.

Keywords: Buildability; Maintainability; Building Delivery in Nigeria

IVESTIGATIVE STUDY ON EFFECT OF NUTRITION ON HIV INFECTED MOTHERS IN SOME SELECTED HOSPITALS IN DEKINA LOCAL GOVERNMENT AREA

Ocheni Joshua & Aye James

Department of Food, Nutrition and Home Science

Kogi State University, Anyigba

Email: Joshuaocheni156@gmail.com

ABSTRACT

The research was carried out on effect of malnutrition on HIV infected mothers in some selected hospital in Dekina local government area of Kogi state. It aimed at bringing to lime light the effect of malnutrition on infected mothers and to create awareness on the health importance of nutrition especially the proper and regular intake of antiretroviral therapy (ART). Samples were gotten from five different hospitals in Dekina local government area of Kogi state i.e. general hospital Egume, general hospital Iyale, Kogi state university teaching hospital Anyigba, Maria Goretti hospital Anyigba, and Grimard catholic hospital Anyigba using a structured questioner. All data obtained were analyzed statistically using a T-test at 5% level of significant. Statistical analysis was carried out in the various hospitals to determine the mean CD4 before ART, the mean CD4 after ART, the mean difference, and the T-values. Statistical analysis was also carried out to determine the mean BMI (body mass index) before, the mean BMI after, mean difference of BMI and T-values. In general, it was found that CD4 count after placement on ART (293.43) was significantly less than CD4 count before ART (38.53). For general hospital Egume, general hospital Iyale, Kogi state university teaching hospital Anyigba, Maria Goretti hospital Anyigba, and Grimard catholic hospital Anyigba. The CD4 count before were 259.78, 209.98, 210.14, 364.82 and 422.48 respectively while the respective CD4 count after were 32.84, 35.88, 38.1, 42.42 and 43.43. The highest level of significance was recorded for general hospital Iyale (T=24.1) with a mean difference of 174.1 while hospital with least significance difference was Grimard Catholic hospital Anyigba (T=11.6) with mean difference of 379.01. Aside patient in general hospital Egume all analysis of data obtained from all the hospital reveal statistically significant increase in BMI for those placed on ART. In general, there was BMI increment from 21.43 to 23.98 with a robust T-value of -2.27. Conversely, there was significant decrease in BMI for those not on ART i.e. 21.98 to 19.10 (T=11.49) the study there shows that nutritional counseling with strict adherence to the use of ART will tackle the problem of malnutrition by restoring the damage done to the body immune system especially to those infected with HIV/AIDs.

COMPUTATION OF ERRORS IN COMMON PHYSICS EXPERIMENTS

Ukeme Umoh¹, Okon Peter² Aniefiok Udofia¹, and Imaobong Paul¹

¹Department of Physics, University of Uyo, Nigeria

²Department of Science Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Ikot Ekpene, Nigeria.

Corresponding author: ukemeaumoh@uniuyo.edu.ng

ABSTRACT

In conducting experiments in physics, the uncertainty in a measurement is first decided before the measurement is made and the measurements repeated and then the individual measured values are combined into an average final value or the measured value is combined mathematically with other measured values, either via combining equations, curve fitting and graphical analysis, to find a final measured value. The process of evaluating uncertainty associated with the measurement is often called error analysis. The uncertainty of a single measurement is limited by the precision and accuracy of the measurement. Every uncertainty in result of experiment from the expected one has important significance. Even on undergraduate level of our universities, error analysis and interpretation of the result should be done instead of writing just the points of precautions. This approach will make the students somewhat familiar about the error analysis on advanced level. This fact necessitated this work the computation of error in undergraduate common physics experiments. This shall enhance the standardization of our laboratory reporting.

Keywords: Computation, Errors analysis, Uncertainty and Measurement.