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Item REVITALIZING ENTREPRENEURSHIP STUDIES IN LIBRARY AND INFORMATION SCIENCE EDUCATION FOR JOB CREATION AND POVERTY ERADICATION IN NIGERIA(A PUBLICATION OF EBONYI STATE CHAPTER OF THE NIGERIAN LIBRARY ASSOCIATION (NLA), 2021-06-18) ADAMU, MOHAMMED SABA (CLN, MNLA, CTN), DOGARA, LADAN (CLN), ABUBAKAR, FATI (CLN), AHMED, YABAGI (CLN)This paper examined revitalization of entrepreneurship studies in Library and Information Science (LIS) education for job creation and poverty eradication in Nigeria. Revitalization of entrepreneurship studies in LIS education that would be amenable to the profession is not only a necessity but mandatory if the prospective LIS graduates would be employers of labour rather than job seekers in a competitive 21st century. The introduction of entrepreneurship studies in Nigerian universities since 2004 is a laudable step despite the fact that facilities for skills acquisition are generally lacking in most institutions. In furtherance of this laudable intention, stakeholders in LIS have also seen the need for integrating entrepreneurship studies in LIS education which has recently led to the proposal for a course known as “Infopreneurship” to be included in LIS undergraduate education programme. Training of LIS students in entrepreneurship requires some skills such as information technology skills, information literacy skills, managerial skills and personal entrepreneurship skills. Opportunities for LIS professionals were also highlighted to include: book publishing, information brokerage, consultancy services, bookselling business, record management, indexing and abstracting services, system analyst, operation of business centres, cybercafé business, editorial services, authoring books, email publishing, web publishing, desktop publishing, establishing and maintaining libraries for organisations, compilation of directories, compilation of bibliographies etcetera. It is recommended that to make entrepreneurship studies attractive, government ought to create favourable environment in terms of infrastructure provision, funding and regulating interest rates on bank loans for interested graduates that would wish to be self-employed after graduation.Item Availability, sufficiency and use of school library resources by students: a case study of Police Secondary School Library, Minna, Niger State, Nigeria(The Nigerian School Library Association., 2018-10-29) Mohammed Saba Adamu, J. Joel Kolo, Alice Adebisi & Fati AbubakarThis study investigated the availability, sufficiency and use of library resources by secondary school students in Police Secondary School (PSS) Minna Library. The research design adopted for this study was descriptive survey research method. The population of the study consisted of Senior Secondary two (SS2) and Senior Secondary three (SS3). A total of eighty (80) copies of the questionnaire were distributed and seventy-seven (77) were returned and used. The instruments used for data collection were observation checklist containing items on availability of information resources and questionnaire containing items on sufficiency and use of information resources by students; factors militating against the use of information and strategies to enhance use of information resources. Data collected were analysed using frequencies and percentages. Findings showed that computer assisted instructional resources were not available and as such could not be determined whether sufficient or not, only few students make effective use of school library. The study recommended that computer assisted instructional resources should be acquire in the school library to enhance effective use of information resources in the school library.Item SECURITY MANAGEMENT: THE ENGINEERING PERSPECTIVE(IEC, 2015) H. U. Ogboo; A. Nasir; J. Y. Jiya; H. T. AbdulkarimSecurity management is a difficult task as everyone agrees that security is a problem. As such, this work aims at addressing the ever increasing security challenge confronting us as individuals from the engineering perspective. Throughout human history, engineering has driven the advance of civilization. This can be seen from the metallurgists who ended the Stone Age to the shipbuilders who united the world’s people through travels and trades; the past witnessed many marvels of engineering prowess. As civilization grew, it became pertinent that the world became confronted with the challenge of survival and relevance and hence, the desire not to be cut out from the basic necessities of life and existence gave rise to devices by humanity to remain relevance and hence, the field of engineering owes it a responsibility to the world to see that this issue is sorted out as usual as it has always provided respite to the world.Item EFFECTS OF OXIDIZED SUCROSE CROSS-LINKED CASSAVA STARCH FILM ON THE PHOTOVOLTAIC PROPERTIES OF PEROVSKITE SOLAR CELLS(The Nigerian Institution of Mechanical Engineers (A Division of Nigerian Society of Engineers), 2021-09) J. Y. Jiya; J. S. Enaburekhan; M. T. Jimoh; E. C. Egwim; I. A. JosephDespite rapid progress in the perovskite solar cell efficiency, there have been concerns about issues which could affect the measurement accuracy and/or practical applications of these devices, amongst which are stability, scaling up (large area devices), and possible environmental effects related to the use of lead-based active material. Based on the findings from previous studies, an optimized biodegradable oxidized sucrose cross-linked cassava starch film layer with zirconium oxide is introduced as a desiccant and buffer against damp heat and thermal recycling. This modified photovoltaic device is capable of resisting ingress of moisture at elevated temperatures, withstanding temperature cycling without delamination, and as such, enables efficient and stable operation. The layers in the PSC were modified by replacing the conventional metallic counter electrode with a low-cost carbon counter electrode. The PSC device with the control architecture underwent a more rapid degradation, particularly within the first 288 hours though with a higher PCE than the modified device. However, in contrast, the PSC device with the buffer layer only degraded a small amount. The best device maintained 95% of its initial efficiency after exposure for 550 hours.Item A Fundamental Review of Trends in Perovskite Solar Cells Based on Introduction of Buffer Layers to Enhance Stability(JOURNAL OF SCIENCE TECHNOLOGY AND EDUCATION, 2020) J. Y. Jiya; J. S. Enaburekhan; M. T. Jimoh; E. C. EgwimPerovskite solar cells (PSCs), as photo-electric conversion devices, exhibit adequate power conversion efficiency (PCE) and low processing cost and have thus become one of the most promising devices to replace conventional silicon-based solar cells thereby addressing current prevailing energy issues. Despite rapid progress in the perovskite solar cell efficiency, there have been concerns about issues which could affect the measurement accuracy and/or practical applications of these devices, amongst which are stability, scaling up (large area devices), and possible environmental effects related to the use of lead-based active material. Current PSCs use nonbiodegradable petroleum-based polymer substrates, discarding of which will aggravate environmental pollution. In this study, a review of the fundamentals and progress in the perovskite solar cell (PSC) is discussed. The processing cost of metal electrode deposition in PSC is very costly, hence, the replacement of the metal electrode by some other low-cost counter electrode is discussed.Item TIMISATION OF PLASMA ARC CUTTING PROCESS OF AISI 304 STAINLESS STEEL USING DESIGN OF EXPERIMENT(The Nigerian Institution of Mechanical Engineers (A Division of Nigerian Society The Nigerian Institution of Mechanical Engineers (A Division of Nigerian Society), 2021) A. O. Nasir; R. O. Medupin; J. Y. Jiya; K. Okon; C. C. Ozoh; I. S. Sule; S. A. LawalOwing to its corrosion resistance capability, stainless steel stands out as a material of choice in food processing and other allied industries. However, cutting, during manufacturing activities, poses enormous challenge with regular thermal cutting processes. This study has optimized plasma arc cutting process of AISI 304 stainless steel using a full factorial experimental design. The input process parameters were Cutting Speed (CS), Cutting Current (CC) and Gas Pressure (GP) while the response variables were Material Removal Rate (MRR) and surface roughness. Analysis of Variance (ANOVA) was performed in order to identify the effect of each input process parameters on the response variables. ANOVA revealed that whereas CS made 31.1% contribution to surface roughness of the stainless steel, CC and GP only contributed as much as 31.7% and 28.2% respectively. CC had the most significant effect of 36.07% on MRR followed by GP and CS with 28.02% and 27.11% respectively. While the optimal cutting conditions for surface roughness were found to be 4000 mm/m for CS, 80 A for CC and 6 bar for GP, the optimal values for MRR were 4000 mm/m, 60 A and 6 bar for SC, CC and GP respectively. It can, therefore, be concluded that increase in cutting current favours increased material removal rate during plasma arc cutting processes of AISI 304 stainless steel.Item Academic Discipline Differences and how it affects the Information Seeking Behavior of Information Users(Sri Lanka Technological Campus in Collaboration with the department of Library and Information SCience, University of Kelaniya SRi Lanka, the department of library and information science universty of Kerala India, and the National science library and resource centre (NSLRC) of the National Science Foundation (NSF) SRi Lanka, 2021-08-23) Goshie, Rhoda WusaThis paper is on the academic discipline differences and how it affects the information seeking behavior of information users. It gave the concept of an academic discipline or field of study as a branch of knowledge, taught and researched as part of higher education by the university faculties and learned societies to which they belong and the academic journals in which they publish research. Information- seeking behavior on the other hand is a more specific concept of information behavior. It specifically focuses on searching, finding, and retrieving information. The paper explained the biglan classification scheme. It also highlighted the problem statement such as lack of reading material on this subject on graduate students, especially in Africa. The paper went further to review the researches and related studies on the subject matter and also gave recommendation and conclusions which all emanates from the researchItem Heat Transfer Analysis of a Concentrated-Type Solar Dryer for Ginger(Journal of Science, GU J Sci, Part A,, 2024) I. Bori; J. Y. Jiya; A. M. Orah; S. Bako; M. O. OyebamijiIn recent years, global concern about the preservation of agricultural products for usage and exports through drying has been outstanding. Solar Parabolic Trough Collectors (SPTC) are used to dry various agricultural products for effective moisture removal. A heat transfer fluid (HTF) flows through a receiver tube pipe that absorbs solar radiation reflected from the stainless-steel sheet surfaces of the SPTC. In order to reduce the heat losses, the pipe was linked through a flexible, thermally insulated cross-linked polyethene pipe to the copper tubes inside the drying chamber. The heat transfer analysis of the SPTC is essential to understand the thermal behavior and its performance during the drying process. This paper examined the heat exchanges developed in the designed concentrated-type solar dryer, and the heat transfer rates in the receiver tube and the drying chamber, as well as the heat transfer coefficients for the solar drying of ginger, were determined. The thermal analysis of the convective heat exchanges within the receiver tube and the drying chamber is presented. The heat transfer coefficients hRec and hDC for the convective heat transfer process in the receiver tube and the drying chamber were 1372.48W/m.K and 17.60W/m.K, respectively. The dryer’s thermal efficiency was 30%, showing considerable moisture removal from the ginger samples. The mean temperature difference between the drying chamber and the ambient showed a considerable increase of about +11oC. This resulted in considerable moisture removal, and the final moisture content achieved by the concentrated solar dryer for the ginger samples was 11.1%, compared to the 23.74% achieved by the open-air solar (OAS) drying methodItem Statistical Optimization of Optical Property (Transparency) of Bleached, Oxidized Sucrose Cross-Linked Cassava Starch Film(AFIT Journal of Science and Engineering Research, 2022) J. Y. Jiya; J. S. Enaburekhan; M. T. Jimoh; E. C. Egwim; I. A. JosephThe present environmental pollution caused by non-degradable polymer films has prompted researches into the development of biodegradable polymer films. This study was able to develop a bleached, cross-linked film from native cassava starch. Hydrogen peroxide (H2O2) was added for bleaching to improve the transparency, oxidized sucrose was added for cross-linking and further oxidation while a moderated concentration of glycerol helps to improve the plasticity. In order to have a wider area of application of the film, the transparency was optimized using Box-Benkhen method under the response surface methodology (RSM) in Design Expert 11.0 software. UV-visible spectrophotometer analysis shows that the cassava starch film produced at the above process conditions retained 91.8 % of its transparency after 24 hours water immersionItem Effect of Cutting Speed and Feed Rate on Tool Wear Rate and Surface Roughness in Lathe Turning Process(International Journal of Engineering Trends and Technology (IJETT), 2015) O. A. Olugboji; M. S. Abolarin; J. Y. Jiya; S. O. Popoola; C. K. AjaniMachining is a vital part of the production process in the manufacturing industries. Turing operation was carried out on the mild steel to produce shaft of various diameters. The conditions applied during the turning operation include varying the cutting speed and feed rate while keeping other cutting variables like depth of cut constant. The results affirms that an increase in the cutting speed causes a decrease in the tool life, increase in the feed rate also affects the surface finish obtained.