Solar Energy Initiatives and its Positive Impacts on African Nations (SADC and Nigeria): A News Review
Chima Ichendu, Dennis Ejike Amadi
Page Numbers : 53-56
DOI : 10.36348/sjet.2021.v06i04.001
This paper provides a summary overview of the benefits of training and retraining of students and staff of Universities in Africa through the adoption of solar energy sources of electricity generation as a form of renewable energy technologies. The paper appraises the impact of the introduction of solar energy technologies on a student of Lesotho, his supervisor and the community. Through news review, the paper uses trending news as a scope within a given period to trace the impact of the initiatives by Southern African Solar Thermal Training and Demonstration Initiative (SOLTRAIN), an initiative of the Austrian Development Agency (ADA). Further the paper appraises trending news through the review of the key features particularly the initiatives contributions to the end users. In comparison, the paper presents the basic characteristics from the initiatives by SOLTRAIN and the Federal Government of Nigeria to the developments of skills as well as training institutions amongst the key elements that contribute to national growth. Conclusively, the reports identifies key drivers that are likely to decide the future direction of the solar energy expansion within the nation.
Original Research Article
March 28, 2021
Influence of Funding Activities on Completion of Selected County Funded Construction Projects in Kitale Town, Trans Nzoia County, Kenya
Muchiri Tabitha Mukami, Mrs. Grace Were, Dr. Patrick Simiyu
Page Numbers : 45-52
DOI : 10.36348/sjet.2021.v06i03.002
Completion of county funded construction projects in Kitale town, Trans Nzoia County records dissatisfying views on the schedule performance of most of the projects. The study investigated how funding activities influence completion of county funded construction projects in Kitale town, Trans Nzoia County. This study is grounded on Goal-setting theory. The study adopted a descriptive survey research. The target population for this study comprised of 508; County Administrators and Project managers who are responsible for Bus Park, stadium and hospital construction and Beneficiaries of the projects and the sample size were 223 respondents. The study used a semi structured self-administered questionnaire to collect data from the managers in the housing and urban development. The study also used an interview guide to obtain responses from representatives in the Ministry of Land and Planning. The collected data were analyzed using both quantitative and qualitative data analysis methods. Quantitative method involved descriptive and inferential analysis. Descriptive analysis such as frequencies, percentages were used to present quantitative data in form of tables. Data from questionnaire were coded and logged in the computer using Statistical Package for Social Science (SPSS V 20.0). Content analysis were used for the qualitative data and then presented in prose. Quantitative data was analyzed using simple linear regression model to establish the relationship between the variables. The study findings based on funding activities objective showed that 87.36% (mean=4.37, Std. Dev=0.899) of the respondents accepted funding for the construction projects are delayed because most of the county budgetary allocated money are delayed from the national government, poor management of resources by the managers in charge, prioritizing salaries paid to workers and failing to give similar weight to the construction of projects and also, some contractors may lack enough money to facilitate the completion of the projects. Inferentially, funding activities attributed to (β=.227 p<0.036) on completion of county projects thus a unit increase in funding activities improved completion of the county funded construction projects by 22.7%. The study concluded that poor funding schemes delayed completion of construction projects. Project may be delayed or be unsuccessfully completed; when flow of funds to a project is not steady then there were on and off activities on site, resulting into contract delay. The study recommends to the members of the county assembly to pass proposed bills that are viable and fruitful to the development of the county. Project completion time should be checked to ensure efficiency.
Original Research Article
March 26, 2021
Constraints to Effective Utilization of Information, Communication and Technology (ICT) in Technical Colleges in Rivers State, Nigeria
Nwauzi, Kelechi Kirian, Divine O. Chiorlu
Page Numbers : 37-44
DOI : 10.36348/sjet.2021.v06i03.001
The study focused at the Constraints to effective Utilization of Information, Communication and Technology (CICT) in Technical Colleges in Rivers State. There are two purpose, research questions and hypotheses that guided the study. The study actually was carried out in Rivers State using a survey research design. The targeted population of the study was 1000 respondents which comprise 200 technical college teachers and 800 technical college students in Rivers State. A cluster sampling technique was used to divide the technical colleges into two clusters; the researcher further used random sampling technique to sample 50 technical college teachers and 200 students making the total sample of 250 respondents. A structured questionnaire was used to collect data for the study titled ‘Constraints to effective Utilization of ICT Facilities in Technical College Questionnaire (CEUICTFTCQ), and instrument was face validated by three experts, Cronbach Alpha was used for reliability coefficient to determine the internal consistency of the instruments to give a value of 0.81. Findings of the study revealed that ICT skills are required in Technical Colleges in Rivers State. It was recommended that (1) since ICT facilities are available for usage, skills should be acquired with as to make use of the facilities provided, (2) Teachers and students of Technical colleges should be competent in the use of the facilities fully as to enhance their teaching- learning situation.
Feb. 23, 2021
Damage Localization Test of Civil GFRP Material Based on Acoustic Emission
Yanhua She, Gaojie Cai
Page Numbers : 32-36
DOI : 10.36348/sjet.2021.v06i02.003
To detect the damage location, the acoustic emission sensor is fixed on the surface of civil GFRP tube by the external bonding method. And damage position of the GFRP Tube under static loading is studied. The acoustic emission sensor is used to receive the signal of the GFRP tube rupture under static loading, and the data is processed by using the acoustic emission damage location principle to realize the real-time display of the specific location of the damage point on the specimen. It is found that the position shown by the test data is approximately the same as the actual damage position of the GFRP tube. The test indicates that the damage position of GFRP tube under static force can be displayed in real time in three dimensions through acoustic emission technology.
Feb. 17, 2021
Forensic Engineering Investigation on a Collapsed School Building Involved Multiple Deaths: A Real Case Report
T. Nataraja Moorthy
Page Numbers : 17-19
DOI : 10.36348/sjet.2021.v06i02.001
Forensic crime scene investigators need to have the basic knowledge of science, engineering and medicine fitted for legal or public argumentation. Only an experienced forensic crime scene investigator can handle such cases and to arrive a conclusion for the presentation in the legal system. Forensic engineering investigation is multi-disciplinary process for investigating and reporting the cause of engineering problems which may have legal ramifications. Building collapse becomes a major threat to the society and people lost the confident on constructors and government. The professionals involved in the construction, viz. engineers, builders and contractors are under severe scrutiny about their role and responsibilities in the collapses. The municipal and corporation authorities have been approving for building constructions such as apartments, schools, colleges and many others. Irrespective of town or villages, construction industry, sometimes has been operating in a chaotic manner due to inadequate legislative building codes or violating building codes. The causes of building collapse ranges from substandard building materials to corruption. The present crime scene case study investigated a collapsed school building forensically the causes of elementary school building collapse, led to the death of 5 children and many sustained injuries, the incident occurred in India, as investigated by the author and identified the cause. The author presented his testimony in the court of law and Honourable Judge accepted the forensic findings and the case ended with conviction.
Original Research Article
Feb. 17, 2021
Study of the Effect of Connection Stiffness on Structural Systems and Theire Structural Integrity
Page Numbers : 20-31
DOI : 10.36348/sjet.2021.v06i02.002
Structural systems consist of sub-systems and elements. Connection elements are needed for the subsystems and assembly and integration of these systems to the main system. Because the main system can fulfill its functional tasks when its assembly and integration with the subsystem is completed. Systematic static strength and dynamic behavior of structures, load bearing material and static cross-sectional properties as well as the strength and stiffness properties of the connections have a significant effect. The effect of the stiffness of the connection elements is higher in thin structural systems where the cross-sectional dimensions are much lower than the system dimensions. Assembly and integration are provided by using connection elements also in thin structural systems such as steel structure, scaffolding and rack structures. Therefore, the strength and stabilization of corner connections and fixing elements affect the entire system. However, while making systematic calculations, the structures, staying on the safe side, are modeled with rigid or rotatory hinged approach. When the connections are modeled as rotatory hinges, larger cross sections are required and support elements are added to prevent the system from becoming kinematic and collapse. With this approach, in buildings that require a lot of connection elements, the weight of the building increases too much and thus the cost increases. On the other hand, when the system is modeled with rigid approach, since the joints are unnecessarily excessively safe and the system's elasticity is very low, sudden overloads may result in collapse accidents and cause loss of life. For this reason, connection elements, especially in thin structures, must be modeled with real stiffness values and verified by tests under the prescribed loads. The purpose of this research is to examine the structural system design approach by modeling thin structure connection elements realistically and to create sensitivity in this regard. With this modeling method, it is aimed both to reduce costs and to prevent possible accidents caused by wrong modeling.
Original Research Article
Jan. 5, 2021
On Improving Sine Sweep Impulse Response Measurments through Adaptive Filtering
Valentin Adrian Niță
Page Numbers : 9-16
DOI : 10.36348/sjet.2021.v06i01.002
Sine sweeps proves to be a reliable tool for measuring impulse responses even in noisy conditions or by using loudspeakers which are not linear. In this paper we present some results regarding an enhanced sine sweep method, used for impulse response measurement, based on the use of adaptive filtering. Using MATLAB, the conditions of a real case scenario impulse response measurement are simulated in order to quantify the performances of the proposed method by using as reference the performances of the classical sine sweep method.