Department of Computer Science

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    A Critical Evaluation of the Environmental Effects of the Existing E-Waste Management Practices in Kenya
    (2019) Simiyu, Peter Wamalwa; Wabwoba, Franklin; Ronoh, Richard
    Information Communication Technology (ICT) gadgets and other electronics are extensively being used in the health, industries, education, homes, communication and trade sectors. With the expected introduction of use of laptops in primary schools in Kenya, the use of these electronics is expected to drastically increase, thus, leading to an increase in electronic waste. Although e-waste has parts and components of value, they contain many toxic components, which prompt a potential need of this research to assess the contents, qualities and impact of e-waste material. The purpose of this paper is to evaluate the environmental implications of the existing e-waste management practices. The study adopted survey research design. The sample population included 18 policy officers in County Government of Bungoma, 28 electronic shop repairs, and 61 institutions and collectors of e-waste material. The study is expected to provide guideline on Green ICT practices and e-waste management as a platform for evaluation, policy enforcement, guidelines and further research on electronic waste management.
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    Students Selection for University Course Admission at the Joint Admissions Board (Kenya) Using Trained Neural Networks
    (2011) Wabwoba, Franklin; Mwakondo, Fullgence M.
    Every year, the Joint Admission Board (JAB) is tasked to determine those students who are expected to join various Kenyan public universities under the government sponsorship scheme. This exercise is usually extensive because of the large number of qualified students compared to the very limited number of slots at various institutions and the shortage of funding from the government. Further, this is made complex by the fact that the selections are done against a predefined cluster subjects vis a vis the student’s preferred and applied for academic courses. Minimum requirements exist for each course and only students having the prescribed grades in specific subjects are eligible to join that course. Due to this, students are often admitted to courses they consider irrelevant to their career prospects and not their preferred choices. This process is tiresome, costly, and prone to bias, errors, or favour, leading to disadvantaging innocent students. This paper examines the potential use of artificial neural networks at the JAB for the process of selecting students for university courses. Based on the fact that Artificial Neural Networks (ANNs) have been tested and used in classification, the paper explains how a trained neural network can be used to perform the students’ placement effectively and efficiently. JAB will be able, therefore, to undertake the students’ placement thoroughly and be able to accomplish it with minimal wastage of time and resources respectively without having to utilise unnecessary effort. The paper outlines how the various metrics can be coded and used as input to the ANNs. Ultimately, the paper underscores the various merits that would accompany the adoption of this technique. By making use of neural networks in the university career choices, student placement at JAB will enhance the chances of students being placed into courses they prefer as part of their career choice. This is likely to motivate the students, making them work harder and leading to improved performance and improved completion rate. The ANN application may also reduce the cost spend on the application processing and the time the applicants have to wait for the outcome. The ANN application could further increase the chances of high quality applicants getting admission to career courses for which they qualify.
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    Classifying Program Visualization Tools to Facilitate Informed Choices: Teaching and Learning Computer Programming
    (2012) Mutua, Stephen; Wabwoba, Franklin; Ogao, Patrick; Anselmo, Peter; Abenga, Elizabeth1
    Program Visualization (PV) is a technique that has been found useful in teaching computing programming. This has seen proliferation in development of PV tools with an aim of enhancing teaching/learning programming over the last two decades. However, the tools usage has remained minimal. Perhaps because it becomes challenging to ascertain the appropriate tool for the right task. This paper presents a classification of program visualization tools with the focus of aiding teachers and students in choosing the most appropriate tool for an interesting experience in the classroom. The paper is based on six various PV tools evaluated over a period of two consecutive academic years in a Kenyan public University. The classification augments the Price’s taxonomy of software visualization arm of PV by presenting four basic levels which are further subdivided into lower levels. Index Terms– Classification, Pedagogy, Program Visualization and Taxonomy
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    Virtual reality in education trends and issues
    (2013-01-01) Omieno, Kelvin K.; Wabwoba, Franklin; Matoke, Nahason
    common form of education in institutions of higher learning (IHL). Many IHL in developing nations, such as Kenya, have greatly experienced an increase in demand for higher education. On the other hand, the ability to connect people with required sets of skills, regardless of their location in the world has been enabled by advances in information technology over the past 20 years. Use of virtual learning systems (VLS) has rapidly emerged as a very promising technology that will probably match the innovation of technologies such as multimedia/hypermedia. These VLS have the potential to provide opportunities for active, flexible, and increasingly individualized learning experiences. It also explains virtual reality principle, describes the interactive educational environment, highlights the challenges higher education face in the traditional mode of delivery and discusses educational benefits of implementing virtual learning environments in IHL. The paper makes a number of recommendations for successful adoption of VLS in higher education
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    The Impact Of Policy Changes In The Education Sector On The Development Of The Book Publishing Industry In Kenya
    (Unisa Press, 2009) Mbengei, Bernard; Francis, Galloway
    This article explores the impact of policy changes in the education sector on the de-velopment of the book publishing sector in Kenya. The article begins by detailing the current status of the book publishing sector in Kenya. Then the interdependence between the education and book publishing sectors is highlighted. The government policies that have shaped the education system in Kenya are analysed with a view to establishing how they have affected the book publishing sector. An overview of the new school textbook policy that was introduced in 1998 is presented in order to show how it has influenced the textbook production and procurement. Then the introduction of the Free-Primary Education (FPE) is discussed because it is the most recent development in the education sector that has provided tremendous impetus to the development of the book publishing industry in the country. The challenges encountered by the Government of Kenya in implementing the FPE and those faced by the book publishers in producing books for the school market are analysed. Finally, a way forward is proposed in the form of recommendations that can contribute to positive growth and mainstreaming of the school textbook publishing sub-sector in Kenya. A literature review approach isused in which sources that include newspapers, government and institutional websites, journals, books and dissertations have been consulted.
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    Faculty and students’ perspectives of online learning during COVID-19 crisis: Constraints and opportunities for Kenyan universities.
    (2023-04-15) Wekullo, Caroline S.; Kabindio, Brendah; Juma, Iddi
    At the onset of COVID-19 pandemic, all higher education institutions had to abruptly migrate from face-to-face mode of learning to virtual learning. Students and faculty members were thrown into the process of acquainting themselves with a fully virtual system. How prepared were institutions, faculty members, and students for the abrupt and massive transition to online learning? The study examined the faculty and students’ perspective of online learning during COVID-19 pandemic. Specifically, the study examined the perceptions of faculty and students on the preparedness of higher education institutions for online teaching and learning. The study also determined the perceptions of staff and students towards online education, constraints, and opportunities. A descriptive cross-sectional survey was conducted at a public university in Kenya. A semi-structured interview was conducted on a total sample of 36 respondents; 24 students and 12 faculty members to capture unique, idiosyncratic and whole individual viewpoints. A conventional Content Analysis was done to determine words or concepts within the transcripts. The findings showed that the study institution, faculty members, and students were unprepared for the immediate and massive shift to online teaching and learning and had challenges using virtual technologies for teaching and learning during the lockdown. These challenges ranged from insufficient or lack of internet bandwidth, training, increased teaching and learning workloads to limited time for interactions. Based on the findings, the study suggests significant implications for higher education institution leaders, policymakers, faculty, and students. The study contributes to the existing literature by analyzing the perceptions of faculty and students about the preparedness of institutions, faculty, and students on the abrupt shift to online learning during the COVID-19 pandemic.
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    Mechanisms Used by Academic Libraries in Kenya to Enhance Webometrics Ranking
    (2023-04) wamahiga, George M.
    Libraries essentially provide equal and fair access to information. Thus, they have a significant influence on the Webometrics ranking of universities across the world. Academic libraries affect Webometrics ranking through the generation of scientific publications and other scholarly resources. The purpose of this study was to examine mechanisms used by academic libraries in Kenya to enhance Webometrics ranking and to analyse the extent to which Webometrics ranking mechanisms in place in university libraries in Kenya have been successful. This study adopted a mixed research design. The target population included staff members of the University of Nairobi, Chuka University, and Kirinyaga University. A total of 73 staff members from the library, ICT, and research departments involved in Webometrics ranking were selected purposively. Semi-structured questionnaires were used as the data collection instruments. Quantitative data was analysed descriptively while qualitative data were analysed using content analysis. The study established that mechanisms put in place to enhance the participation of university libraries in Kenya in the Webometrics ranking include improved use and submission of e-resources as well as promotion of high-quality research in the institutions. Webometrics ranking mechanisms currently in place at the university libraries in Kenya have only been moderately successful. The findings of this study may be used by other institutions of higher learning on the mechanisms they can adopt to increase the capacities of their academic libraries so as to improve the contribution of these libraries to Webometrics and consequently to the overall ranking of the individual universities nationally and internationally.
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    An Enhanced Data Transmission in Mobile Banking Using LSB-AES Algorithm.
    (2023-06-03) Okari, Daniel O.; Awuor, Fredrick Mzee; Makiya, Ratemo; Oduor, Collins
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    Polarized Phase Holograms of High Diffraction Efficiency
    (2023-05-10) Njoroge, Stephen Maina; Kinyua, Dickson Mwenda
    Holography has a wide application in medicine, optical computers, scanners among others. Conventional studies on analogue holograms have mainly been conducted on image generation, processing and reconstruction. However, these conditions may vary thus affecting hologram quality. Since convection holography uses photosensitive recording interference patterns in holographic material, there is a need to evaluate aberration or how high intensity of light has been reconstructed. In this paper, we analyzed the fundamental parameters such as exposure time and processing chemical composition effect in phase holograms. Optimization of these parameters resulted in phase hologram image of approximately 16% diffraction efficiency at an exposure time of 20 s. Moreover, the influence of objective beam polarization is investigated. The results show that by varying the polarization orientation, diffraction efficiency and fringe visibility are greatly affected. Polarized phase hologram of diffraction efficiency of 21.1% has been achieved
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    Gender Differences in Secondary School Teacher Counsellors Perception of Ethical Standards in Counselling in Kiambu County, Kenya
    (2023-07-31) Ngugi, Peter Kamande; Kanjogu, John; Kingori, Isaac W.
    Ethical standards are at the core of counselling practice and are aimed at ensuring the welfare of the client and the counsellor are safeguarded. Counselling, like any other profession is governed by ethical standards and unless it’s provided on ethical basis, it may cease to serve its intended purpose. Despite the critical role of ethical standards in a counselling relationship, the extent to which a counsellor will adhere to these standards may be dependent on the way he/she perceives these standards. This study presumed that perception of ethical standards may be contingent on ones gender. This is the assumption that motivated this study with a desire to validate whether gender influences perceptions of ethical standards among teacher counsellors in secondary schools in Kiambu County, Kenya. The study was guided by the moral development theory and adopted the mixed method research design. The target population was the 281 heads of guidance and counselling departments of secondary schools in Kiambu County and the five officials of guidance and counselling association in the county. The sample was 170 participants who comprised 165 heads of guidance and counselling departments and five officials of the guidance and counselling association in the County. The study utilized stratified and purposeful sampling methods. Data was collected through self-administered questionnaires and focused group discussion. The instruments were validated by subjecting them to expert’s scrutiny. The instrument’s reliability coefficient was 0.80 which was accepted. Data accruing from the focus group discussion was transcribed for ease of analysis while responses to the questionnaire were analysed through independent sample test. Five areas were focused by the study. These included ethical standards relating to counsellor-client relationship, counsellor integrity, clients informed consent, clients confidentiality and putting clients first. Accruing findings demonstrated that teacher counsellor’s had an unfavourable perception of ethical standards (mean =2.84). and that gender had a statistically significant influence on the perception of ethical standards among teacher counsellor’s in secondary schools in Kiambu County, Kenya (p= 0.000, t= -2.276). The study recommends that gender be an important factor for guiding the appointment of teacher counsellor’s and capacity building targeting male counsellors be initiated. Additionally, the study recommends that further research be carried out to establish whether there will be gender differences in perception of ethical standards and psychological gender. The study contributes to the body of knowledge as it provides a model of predicting the perception of ethical standards given the gender of teacher counsellors.
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