Browsing by Author "John Wachira Kamau"

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    A Government Driven Approach Towards Green IT Economies
    (African Journal of Computing and Information Systems (IJSTER-AJCIS)., 2016) John Wachira Kamau; Prof. Geoffrey Muchiri Muketha; Kevin Mwiti Njeru
    The growing threat on the environment driven by an accelerated growth in economic activities has amplified the role of government in enhancing sustainability. To business and the industry leaders, the global economic challenges have compelled them to reconsider how they do business to gain an economic advantage and as a drive towards enabling a socially responsible business environment. This has forced businesses and industry to consider and act on a broad range of socially responsible and sustainable programs. As a majority business and industry align their goals by embedding sustainability mechanisms as key pillars to economic empowerment, most global governments seem to be lagging behind in providing the necessary facilitation in their economies. In the field of Information Communication Technology (ICT), the integrating and enabling role of ICTs has been considered critical in managing the global carbon footprint by exploiting their innovative capabilities thus providing sustainable solutions to the environment. Even in this area, the government has been considered a late adopter thus limiting its ability to provide solutions that is critical in this vital area. This paper therefore analyzes the role of government in building a sustainable economy using ICT and provides an action plan for governments in developing economies. This is based on data collected from both primary and secondary sources. Descriptive and inferential statistics was used to analyze the data and to draw conclusions. The action plan evaluates the role of government on green ICT from the perspectives of legislation, policies and regulations, Incentives, Education and social economics, support for business process integration and Implementation and usage of green ICT.
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    A Literature Survey of Image Descriptors in Content Based Image Retrieval
    (International Journal of Scientific & Engineering Research, 2016-03) John Wachira Kamau; Dr. Cyrus Abanti Makori; Abdulrehman Ahmed Mohamed
    As a result of the new communication technologies and the massive use of Internet in the society, the amount of audio-visual information available in digital format is increasing considerably. This has necessitated designing systems that allow describing the content of several types of multimedia information in order to search and classify them. The audiovisual descriptors are used for contents description in Content Based Image Retrieval (CBIR). The CBIR is a technique for retrieving images on the basis of automatically-derived features such as color, texture and shape. It uses digital processing and analysis to automatically generate descriptions directly from the media data. Image descriptors are the descriptions of the visual features of the contents in images, which describe elementary characteristics of images such as the shape, the color, the texture or the motion, among others. A literature survey study is most important for understanding and gaining insight about specific area of a subject. Therefore, in this paper we survey some of the state-of-art technical aspects of image descriptors in CBIR. Even though lots of research works had been published on CBIR, however, in this paper an effort has been made to explore an in-depth chronological growth in this field of image descriptors with respect to performance measure metrics of CBIR systems.
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    A Review of Prominent Technology Acceptance Models in the Context of Predicting Software Adoption in African Developing Countries: A Case of Free Desktop Open Source Software (OSS)
    (Asian Journal of Information Technology, 2017) John Wachira Kamau; Ian D. Sanders
    A number of technology adoption models have been developed over the years. Currently, there are ten prominent models which since, their development have been tested in different environments. The models have also been extended by including constructs which researchers perceive to be important depending on the environment. The models are Theory of Reasoned Action (TRA), Technology Acceptance Model (TAM), Motivational Model (MM), Theory of Planned Behavior (TPB), Combined TAM and TBP, Model of PC Utilization (MPCU), Innovation Diffusion Theory (IDT), Social Cognitive Theory (SCT), Unified Theory of Acceptance and Use of Technology (UTAUT) and the Extended Unified Theory of Acceptance and Use of Technology (EUTAUT). Generally these models have been developed and tested in non-African and non-developing countries. This study reviews these prominent existing technology adoption models with the aim of establishing their appropriateness in predicting Desktop Open Source Software (OSS) adoption in developing countries in Africa.
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    BYOD concept and issues relating to adoption in learning institutions
    (International Journal of Education Management & Administration (IJEMA)., 2016-09) John Wachira Kamau; Mutwiwa Petronilla Ndunge,; Joyce Gikandi
    As Information Communication Technology (ICT) has evolved, the overall physical size of computing devices has gradually decreased due to advances in the microchip technology; com`puting processing power doubles every few months and at the same time the cost of the computing devices has continuously been going down. What this means is that today, the general citizenly in every economy have every powerful devices within their hands for personal use. With the growth in internet and interconnectivity between devices, all these devices already have access to the internet where they can be able access vast amounts of information resources and organizational systems (school included). With the global shift to internet based systems, this combines to add immense power to a knowledge/information based societies. Schools and other learning institutions are at the verge of being transformed by the growth of this digital content/transformation. Students from their early years of learning have access to these powerful devices and most of them now how to operate them. Learning institutions on the other hand face the challenge of acquiring computing devices especially with the drive towards one device a student, driven by the rising financial needs to sustain education hence limited budgets to acquire and maintain computing devices. Bring your own device (BYOD) offers an opportunity for learning institutions to exploit the power of the devices that students and staff have to drive the delivery of digital content. However, this is not easy as it may sound even thou beneficial. Several issues have arisen as regards BYOD adoption in schools and addressing them would be critical for its success. This paper looks at these issues, and provides an approach on how each of these issues can be handled to provide an inherent framework for BYOD adoption.
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    The Effect of Mobile Money on Saving and Money Transfer Practices for Low-Income Earners in Kenya
    (Journal of Business Studies Quarterly, 2017) John Wachira Kamau; Kennedy Munyua Waweru
    The mapping of the alternative value storage and saving methods is important in providing insights on the impacts of mobile money on saving practices, how people navigate their available payment choices now, and in what ways these practices are shifting. This study sought to find out whether the introduction of mobile money has been accompanied by a significant shift in saving and money transfer practices used by low-income earners in Kenya. The study surveyed 750 households across Kenya and found that the introduction of mobile money has been associated with an increase in the number of low-income earners saving their money with formal banks and saving and credit co-operatives and a significant shift away from the practice of saving money by hiding it houses. The practice of storing wealth in non-monetary forms was however unaffected by the introduction of mobile money in rural areas. Also, unaffected is the hawala type method of money transfer in rural areas of Northeastern Kenya. Other methods of money transfer experienced a significant decrease in usage amongst low income earners after the introduction of mobile money.