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Scientific Research Journal
Scirj Volume VII, Issue II, February 2019 Edition ISSN: 2201-2796 Publication starts: 25th February 2019 Full Paper available from: 25th February 2019 
LECTURERS’ ICT COMPETENCY NEEDS IN THE USE OF PERIPHERAL EQUIPMENT FOR TEACHING IN POLYTECHNICS IN NORTH-EAST ZONE OF NIGERIA
Dr. M. U. Michika, Dr. S. S. Manabete Abstract: The study examinedthe ICT competency needs of lecturers in the use of peripheralequipment for teaching in polytechnics in North-East Zone of Nigeria. One purpose was identified and studied. To guide the study, one research question was formulated and answered. In like manner, one hypothesis was tested. A structured questionnaire, designed by the researchers, was used to collect data from a sample of 324 respondents, drawn from three colleges, i.e. College of Science and Technology, College of Engineering Technology and College of Administrative and Business Studies. Mean and standard deviation were used to answer the research question while the analysis of variance statistic was used to test the hypothesis at 0.05 level of significance. Findings revealed that lecturers teaching in polytechnics in the North-East Zone required the following ICT peripheral equipment competencies such as use of the digital camera, use of the web camera for internet communication, use of the scanner to copy messages, setting up and using Liquid Crystal Displays (LCDs) and use of a multimedia projector. The study also found that a significant difference existed in the mean scores of the responses of the three groups of respondents regarding ICT competency needs in the use of peripheral equipment. A Scheffe post-hoc multiple comparison test however, revealed that lecturers in the three Collegeswere responsible for bringing about the significant difference in the mean scores of their responses. The study recommended among other things, that Government should increase funding for ICT with a view to upgrading existing ICT facilities and supplying new ones, and the international community, especially donor agencies needs to provide ICT assistance to polytechnics in the North-East, most especially in the area of ICT training and facilities supply.
Derivation of Theoretical Gravity Model on the Clarke 1880 Ellipsoid for Practical Local Geoid Model Determination
Eteje S. O., Oduyebo O. F. and Ono M. N. Abstract: The application of gravity anomalies for gravimetric geoid model determination has necessitated the computation of normal gravity on the WGS 84 ellipsoid using the International Gravity Formula. For local gravimetric geoid model determination, the gravity anomalies are computed on the local ellipsoid adopted for geodetic computation in the area/region of study. To determine precise local gravimetric geoid model in countries where Clarke 1880 ellipsoid is adopted for geodetic computation, the theoretical gravity must be computed on the adopted geodetic computation surface. As a result, this paper derives a local theoretical gravity model on the Clarke 1880 ellipsoid for practical local geoid model determination. The model was derived using the Clarke 1880 ellipsoid parameters, angular velocity, gravitational constant and the Somiglinana closed formula for normal gravity. The derived model was presented in two forms, model A and model B. The two forms of the derived model were compared to determine their suitability as well as agreement. The comparison results show that the two forms of the model agree. Thus, any of the model forms can be applied for accurate normal gravity computation where Clarke 1880 ellipsoid is adopted as a computation surface.
TRAINING AND SUPPLIER ADOPTION AS DETERMINANTS OF IMPLEMENTATION OF E-PROCUREMENT AT RONGO UNIVERSITY, KENYA
Julius Oyamo, Lucy Nyakeyo Abstract: The study sought to understand the determinants of implementation of e-procurement in higher learning institutions and in particular at a case of Rongo University. The study had two objectives namely: To determine the effect of training on implementation of e-procurement in Rongo University, and; To determine the effect of supplier adoption on implementation of e-procurement in Rongo University. The technology acceptance model and diffusion of innovations theories are the models used for this study. A descriptive research design was adopted to achieve the objectives and a quantitative method was employed to gather data from staff of Rongo University. A sample size of 79 respondents was purposively selected. A questionnaire was used to collect data which was then analyzed using descriptive statistics. Multiple regression analysis was used to show the relationship between the independent and dependent variables. The study findings revealed that the employees of the Rongo University perceived training as being central to effective adoption of e-procurement. The study therefore recommended that Rongo University should establish e-procurement team with information technology expertise and constantly improve their knowledge and skills through regular training. The study equally recommended that the top management should remain committed towards the implementation process of the e-procurement in the university.
SAFETY PRACTICES OF NIGERIAN CONSTRUCTION SITE WORKERS: A Case Study of Benin-City and Gombe Metropolis
Agbonkhese Onoyan-usina, Yerima Abubakar Baba, Kawu Yakubu; Salisu Ibrahim Abstract: Safety practices on Nigerian construction sites cannot be overemphasized because it plays a huge role in the timely deliverability of projects and indeed the wellbeing of the construction site worker who bears the direct impact of construction site hazards which often most times is life threatening in the event that safety practices on construction sites are not strictly adhered to. The research objectives were to establish that construction workers attitude towards safety practices is determined by their understanding of construction site risks, safety rules and general work procedures; also to determine the extent of the relationship between poor safety culture and increased rate of unsafe acts in the Nigerian construction industry. It focused on workers of medium sized Construction Companies and specialized contractors operating within Benin City, South-South Nigeria and Gombe Metropolis, North-East Nigeria. The duration of study is between March 2017 and November 2018. Primary and secondary data were both collected through comprehensive literature review, personal interviews, structured questionnaire and observations. Five hundred (500) questionnaires (250 each administered within the study areas) were distributed to workers of construction companies to access their perception and understanding of safety practices on construction sites workplaces. Ranking on five point scale was used to analyze the questionnaires and to measure a range of opinions from most important to least important. The results shows Lack of safety training was ranked the highest; while Shortage or absence of safety equipment was ranked the lowest cause of workers’ accidents on construction sites. 65% of the respondents affirmed that their companies practice safety programs while 35% affirmed otherwise.
Growth performance and survival of monosex cultured Heterobranchus longifilis juveniles in concrete flow-through and stagnant water systems
Robert E.A., Yisa A.T., Tsadu S.M. Abstract: The growth performance and survival rate of monosex Heterobranchus longifilis juveniles were examined. A total of 144 Heterobranchus longifilis juveniles were stocked in eighteen (18) concrete tanks at stocking density of sixteen (16) fishes per tank of 2 by 2 metre square in flow-through and stagnant water systems triplicated for fifty six (56) days. Mixed sex tanks of Heterobranchus longifilis served as the control. The mean initial weight was taken as 1.22±0.00g while the highest mean final weights were 7.86±0.12a g and 6.34±0.02c g for monosex females and males in stagnant culture THFS and THMS. Heterobranchus longifilis also showed highest Specific growth rate of 3.80±0.03g in the female stagnant system THFS. Food conversion ratio and Feed conversion efficiency were highest in female flow-through tank THFF and stagnant tank THFS with values 4.09±0.00a and 16.83±0.08a. Performance Index showed Heterobranchus longifilis mixed sex performed better than the flow-through monosex culture of Heterobranchus longifilis. High survival rate 95.83±4.17% was seen in female stagnant tanks THFS. Lowest survival rates were recorded in the monosex flow-through and stagnant systems of Heterobranchus longifilis. Condition factor K was greater than 1 throughout the study for both species. Values were closely similar for the specie in monosex and mixed sex culture. Water quality parameters were at normal ranges for freshwater culture, throughout the study. It is recommended that concrete flow-through and stagnant systems be used for monosex and mixed sex culture of Heterobranchus longifilis.
INFLUENCE OF STRATEGIC FACTORS IN INCREASING STRUCTURAL GROUP ENGAGEMENT AND IMPLEMENTATION SUCCESS OF THE GREEN SUPPLY CHAIN MANAGEMENT
Gunawardana Vinyaman, Nurdin Brasit, Mahlia Muis, Muhammad Idrus Taba Abstract: Environmental problems have become a global issue, so the industry realizes that to evaluate the process of procurement of raw materials, distribution, customers, and stages of disposal, holistic changes are needed. This study aims to determine and analyze the influence of technological characteristics, organizational encouragement, and the quality of collaboration on the structural group engagement and GSCM implementation. Analyze the influence of the structural group engagement on GSCM implementation. This research was conducted with a quantitative approach that developed and tested the model. The research was conducted at PT Vale Indonesia (PTVI), Soroako, South Sulawesi, and PT Agincourt Resources (PTAR), South Tapanuli Regency, North Sumatra. The population and sample of the study were all leaders at various structural levels within PT Vale Indonesia (PTVI) and PT Agincourt Resources (PTAR). Methods of collecting data using a questionnaire, which was designed in the form of a closed questionnaire. The data analysis technique uses Structural Equation Modeling. The results showed that the technological characteristics and organizational encouragement variables significantly influence the structural group engagement and GSCM implementation. The quality of collaboration has a significant effect on GSCM implementation. The involvement of the structural group engagement has a significant effect on GSCM implementation. The quality of collaboration does not significantly influence the structural group engagement.
RAPID SOLIDIFICATION OF CAST IRON
Elizabeth. P. Elenwa Abstract: The grey cast iron wasrapidly solidified by drop tube technique and different sample sizes obtained. The calculation results of the cooling rates of the grey cast iron samples shows that the maximum cooling rate obtained is 7280K/s in this experiment. The microstructure of the grey cast iron samples with different sizes were characterized using optical microscopy, scanning electron microscopy and x-ray diffraction analysis. In the microscopic analysis, it was found that lower cooling rates promote graphite formation in grey cast iron. The microstructure of the grey cast iron bar (unetched) shows the most desired morphology and distribution of grey cast iron.The X-ray diffraction analysis shows the main peaks present in the samples and their experimental intensities. Peaks (011) and (101) were present in all the samples with (011) being the most intense peak. The theoretical intensities and the relative ratios of these peaks were estimated and presented in table 1 and 2 of this work. The solidification behaviour in drop tube technique is significantly affected by the size of the droplet which can generally determine the exact level of underccooling. The cooling rate in this process is estimated and their effect on the structural morphology of grey cast iron is discussed.
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