Samuel Tewelde - Academia.edu (original) (raw)
Papers by Samuel Tewelde
Lecture notes in networks and systems, 2022
Systems
In the current knowledge-driven global economy, higher education and research institutions are ta... more In the current knowledge-driven global economy, higher education and research institutions are taking a leading role as the hubs for knowledge creation and sharing. In contribution to the needed coordination of the efforts, this paper presents a guiding model thorough assessment of the prevailing status of knowledge resources sharing and collaboration in the regional alliance for education and research networks in the eastern and southern African countries—UbuntuNet Alliance. This research carried out a qualitative study with semi-structured interviews with CEOs of three active national research and education networks (NRENs), representing both the government-run and private consortium-based settings. The study adopted a socio-technical perspective in assessing the technological engagements and the knowledge resources utilization within and among the NRENs in the region. The findings show that the NRENs share a similar set of challenges as well as missions and objectives; they aspir...
2021 IEEE Frontiers in Education Conference (FIE)
This research paper examined theories, pedagogics, and contents explored by studies focusing on p... more This research paper examined theories, pedagogics, and contents explored by studies focusing on promoting computational thinking (CT) in higher education institutions (HEIs). CT has become a fundamental approach to building problem-solving skills, which requires a thought process. The field of CT is generally still maturing, and the use of CT as an approach to introduce freshmen to introductory programming courses in HEIs has been gaining scholars' interest in the recent past. To appreciate the strategies explored to promote teaching and learning of CT in HEIs; evaluate scholarly discussions, contributions, and potential impact of studies in this field, there is a need to ground the theoretical constructs that build the foundation for the field. A literature review methodology was adopted in this study. The data collected from the Web of Science, the Scopus, ACM, and ProQuest databases were analyzed to provide answers to the research questions. The findings from this study suggest that constructionism and constructivism are the prevailing learning theories explored by scholars in this field to deploy CT in HEI. Additionally, the study revealed that activity-based learning, problem-based learning, automatic assessment-based learning, and self-regulated or self-reflective learning are the prominent pedagogies used by educators. These findings provided a strong foundation for research in this growing field. Besides, the findings also create an opportunity for positioning CT in HEI's educational curriculum regarding how CT should be taught in that context.
This paper explores the prevailing higher education environment in Eritrea as a case study, with ... more This paper explores the prevailing higher education environment in Eritrea as a case study, with the aim of identifying factors influencing knowledge sharing and collaboration in the community both within and across the institutions. The research is based on qualitative data from semi-structured interviews with seven respondents: leaders and senior academicians representing all six higher education institutions (HEIs) in Eritrea. It investigates the environment from the socio-technical systems perspective with a holistic view of the institutional system rather than sub-systems. The results show that the HEIs have considerable levels of underutilized technology tools available in the community, and institutional guidelines to promote collaboration. However, the realities on ground show several challenges requiring coherence between the social and technical factors. This research, therefore, justifies the need to use the advanced capabilities of technologies to also augment non-techni...
Ninth International Conference on Technological Ecosystems for Enhancing Multiculturality (TEEM'21), 2021
In today's world, the advancement of Information and Communication Technologies (ICT) is revo... more In today's world, the advancement of Information and Communication Technologies (ICT) is revolutionizing the ways we experience life in general. It has become unavoidable for countries to engage their administration processes and activities as a system, an information system, with the new capabilities of ICT. However, developing countries have yet to consider a contextual approach to deploy appropriate technologies that should also leverage the non-technical aspects to cope up with the new intervention. This requires a collaborative and interconnected efforts in designing and adopting the technology solutions sought and the social leveraging required, hence a socio-technical approach to the comprehensive solution. This article identifies the core opportunities and the main challenges developing countries experience while implementing a new information system (IS) from the global domain. It explores relevant resources from literature and from the authors’ previous qualitative research on relevant topic in developing countries, the Eritrean Higher Education environment, as well as two case studies on IS development in Ghana and India. The results of the research recommend a framework for developing information systems in developing countries from the socio-technical systems perspective.
Proceedings of the Seventh International Conference on Technological Ecosystems for Enhancing Multiculturality, 2019
In the prevailing knowledge-driven economic society and increasingly digitizing world, knowledge ... more In the prevailing knowledge-driven economic society and increasingly digitizing world, knowledge as the very important resource claims a key position in the success of companies and institutions. It is even more so in the knowledge-intensive institutions like in higher education. Its proper management incorporates three main components, namely People, Technology and Process. It is the coherence between these main components that determines the success of a Knowledge Management System (KMS). Since the later years of last decade, the advancement in the features of technology hardware and their functionalities have brought more focus on the technology capabilities to serve the human resource beyond representing and processing information. Moreover, the growing digital-native generation also forms the basis for the application of advancing features of technology into the processes to efficiently utilize the knowledge resources for greater educational and research endeavors towards sustainability of higher education. This Systematic Literature review, therefore, describes the methodology developed to conduct the review and provides analysis of the findings exploring the trend in the application of information technologies in higher education KMS. It will also identify gaps where more research needed and describing lessons acquired for contextual application of KMS in developing countries' higher education.
2017 IEEE AFRICON, 2017
The unprecedented uptake of mobile services in Africa has had substantial direct and indirect imp... more The unprecedented uptake of mobile services in Africa has had substantial direct and indirect impacts on the local economies. Eritrea is one of the countries in the continent that is relatively late adaptor of mobile broadband technologies. This change in the local mobile landscape is creating an urgent need for enhanced local expertise in mobile technologies. To that end, the local higher education institutions play a key role in the capacity building process. In this article, we describe the experience from a capacity building project with the Eritrean Institute of Technology (EIT) that resulted in the implementation training course on Advanced Wireless Technologies (AWT) at EIT. We demonstrate how the course design was fit with the local context and training needs within the mobile ecosystem. Furthermore, we present the teaching approach and hands-on learning activities that were utilized in the AWT course. Finally, we provide some concluding discussions based on the experiences ...
International journal of engineering research and technology, 2013
Biogas production is one of the most important tools that can be used to alleviate the problems o... more Biogas production is one of the most important tools that can be used to alleviate the problems of global warming, energy security and waste management. Eritrea has plentiful of biomass, cafeteria and agricultural wastes as raw materials for the effective biogas production to overcome ever the energy demand. This paper is mainly illustrated in finding the optimum conditions for biogas production with the help of cow dung and cafeteria wastes. Anaerobic single stage co-digestion of cafeteria wastes and cattle dung was analyzed in batch mode at mesophillic conditions for the effective biogas generation. A conversion of 75% of the organic solids fed into digester [HRT] was obtained for every single stage batch digestion at 40 days retention time. The average gas yield was high and it is 0.34m 3 /kgVS added. To make favorable fermentation conditions, the content of the initial Total Solids [TS] was changed from 16% to 8% by diluting with water. Maximal overall methane productivity was attained when the ratio CD/CW was 50:50 and maximum organic loading rate was 3.55kgVS/m 3 d found from semi-continuous digestion on 50:50 without clogging of the digester.
Lecture notes in networks and systems, 2022
Systems
In the current knowledge-driven global economy, higher education and research institutions are ta... more In the current knowledge-driven global economy, higher education and research institutions are taking a leading role as the hubs for knowledge creation and sharing. In contribution to the needed coordination of the efforts, this paper presents a guiding model thorough assessment of the prevailing status of knowledge resources sharing and collaboration in the regional alliance for education and research networks in the eastern and southern African countries—UbuntuNet Alliance. This research carried out a qualitative study with semi-structured interviews with CEOs of three active national research and education networks (NRENs), representing both the government-run and private consortium-based settings. The study adopted a socio-technical perspective in assessing the technological engagements and the knowledge resources utilization within and among the NRENs in the region. The findings show that the NRENs share a similar set of challenges as well as missions and objectives; they aspir...
2021 IEEE Frontiers in Education Conference (FIE)
This research paper examined theories, pedagogics, and contents explored by studies focusing on p... more This research paper examined theories, pedagogics, and contents explored by studies focusing on promoting computational thinking (CT) in higher education institutions (HEIs). CT has become a fundamental approach to building problem-solving skills, which requires a thought process. The field of CT is generally still maturing, and the use of CT as an approach to introduce freshmen to introductory programming courses in HEIs has been gaining scholars' interest in the recent past. To appreciate the strategies explored to promote teaching and learning of CT in HEIs; evaluate scholarly discussions, contributions, and potential impact of studies in this field, there is a need to ground the theoretical constructs that build the foundation for the field. A literature review methodology was adopted in this study. The data collected from the Web of Science, the Scopus, ACM, and ProQuest databases were analyzed to provide answers to the research questions. The findings from this study suggest that constructionism and constructivism are the prevailing learning theories explored by scholars in this field to deploy CT in HEI. Additionally, the study revealed that activity-based learning, problem-based learning, automatic assessment-based learning, and self-regulated or self-reflective learning are the prominent pedagogies used by educators. These findings provided a strong foundation for research in this growing field. Besides, the findings also create an opportunity for positioning CT in HEI's educational curriculum regarding how CT should be taught in that context.
This paper explores the prevailing higher education environment in Eritrea as a case study, with ... more This paper explores the prevailing higher education environment in Eritrea as a case study, with the aim of identifying factors influencing knowledge sharing and collaboration in the community both within and across the institutions. The research is based on qualitative data from semi-structured interviews with seven respondents: leaders and senior academicians representing all six higher education institutions (HEIs) in Eritrea. It investigates the environment from the socio-technical systems perspective with a holistic view of the institutional system rather than sub-systems. The results show that the HEIs have considerable levels of underutilized technology tools available in the community, and institutional guidelines to promote collaboration. However, the realities on ground show several challenges requiring coherence between the social and technical factors. This research, therefore, justifies the need to use the advanced capabilities of technologies to also augment non-techni...
Ninth International Conference on Technological Ecosystems for Enhancing Multiculturality (TEEM'21), 2021
In today's world, the advancement of Information and Communication Technologies (ICT) is revo... more In today's world, the advancement of Information and Communication Technologies (ICT) is revolutionizing the ways we experience life in general. It has become unavoidable for countries to engage their administration processes and activities as a system, an information system, with the new capabilities of ICT. However, developing countries have yet to consider a contextual approach to deploy appropriate technologies that should also leverage the non-technical aspects to cope up with the new intervention. This requires a collaborative and interconnected efforts in designing and adopting the technology solutions sought and the social leveraging required, hence a socio-technical approach to the comprehensive solution. This article identifies the core opportunities and the main challenges developing countries experience while implementing a new information system (IS) from the global domain. It explores relevant resources from literature and from the authors’ previous qualitative research on relevant topic in developing countries, the Eritrean Higher Education environment, as well as two case studies on IS development in Ghana and India. The results of the research recommend a framework for developing information systems in developing countries from the socio-technical systems perspective.
Proceedings of the Seventh International Conference on Technological Ecosystems for Enhancing Multiculturality, 2019
In the prevailing knowledge-driven economic society and increasingly digitizing world, knowledge ... more In the prevailing knowledge-driven economic society and increasingly digitizing world, knowledge as the very important resource claims a key position in the success of companies and institutions. It is even more so in the knowledge-intensive institutions like in higher education. Its proper management incorporates three main components, namely People, Technology and Process. It is the coherence between these main components that determines the success of a Knowledge Management System (KMS). Since the later years of last decade, the advancement in the features of technology hardware and their functionalities have brought more focus on the technology capabilities to serve the human resource beyond representing and processing information. Moreover, the growing digital-native generation also forms the basis for the application of advancing features of technology into the processes to efficiently utilize the knowledge resources for greater educational and research endeavors towards sustainability of higher education. This Systematic Literature review, therefore, describes the methodology developed to conduct the review and provides analysis of the findings exploring the trend in the application of information technologies in higher education KMS. It will also identify gaps where more research needed and describing lessons acquired for contextual application of KMS in developing countries' higher education.
2017 IEEE AFRICON, 2017
The unprecedented uptake of mobile services in Africa has had substantial direct and indirect imp... more The unprecedented uptake of mobile services in Africa has had substantial direct and indirect impacts on the local economies. Eritrea is one of the countries in the continent that is relatively late adaptor of mobile broadband technologies. This change in the local mobile landscape is creating an urgent need for enhanced local expertise in mobile technologies. To that end, the local higher education institutions play a key role in the capacity building process. In this article, we describe the experience from a capacity building project with the Eritrean Institute of Technology (EIT) that resulted in the implementation training course on Advanced Wireless Technologies (AWT) at EIT. We demonstrate how the course design was fit with the local context and training needs within the mobile ecosystem. Furthermore, we present the teaching approach and hands-on learning activities that were utilized in the AWT course. Finally, we provide some concluding discussions based on the experiences ...
International journal of engineering research and technology, 2013
Biogas production is one of the most important tools that can be used to alleviate the problems o... more Biogas production is one of the most important tools that can be used to alleviate the problems of global warming, energy security and waste management. Eritrea has plentiful of biomass, cafeteria and agricultural wastes as raw materials for the effective biogas production to overcome ever the energy demand. This paper is mainly illustrated in finding the optimum conditions for biogas production with the help of cow dung and cafeteria wastes. Anaerobic single stage co-digestion of cafeteria wastes and cattle dung was analyzed in batch mode at mesophillic conditions for the effective biogas generation. A conversion of 75% of the organic solids fed into digester [HRT] was obtained for every single stage batch digestion at 40 days retention time. The average gas yield was high and it is 0.34m 3 /kgVS added. To make favorable fermentation conditions, the content of the initial Total Solids [TS] was changed from 16% to 8% by diluting with water. Maximal overall methane productivity was attained when the ratio CD/CW was 50:50 and maximum organic loading rate was 3.55kgVS/m 3 d found from semi-continuous digestion on 50:50 without clogging of the digester.