Faculty of Science & Technology (FST): Recent submissions

Now showing items 4221-4240 of 4283

    • Thermal Shock Resistance of a Kyanite-Based (Aluminosilicate) Ceramic 

      Rahbar, N; Aduda,BO; Zimba, J; Obwoya, SK; Nyongesa, FW; Yakub, I; Soboyejo, WO (Society for Experimental MechanicsSchool of Physical Sciences, 2010)
      This paper presents the results of a combined experimental and theoretical study of microstructure and thermal shock resistance of an aluminosilicate ceramic. Shock-induced crack growth is studied in sintered ...

    • An Investigation of Thermal Shock in Porous Clay Ceramics 

      Nyongesa, FW; Rahbar, N; Obwoya, SK; Zimba, J; Aduda, Bernard O; Soboyejo, WO (School of Physical Sciences, 2011)
      The thermal shock resistance of porous ceramic materials is often characterized by the Hasselman parameters. However, in other scenarios,the room-temperature residual strengths after thermal shock are also used to quantify ...

    • Application of Dye-Sensitized Solar Cell Technology in the Tropics: Effects of Air Mass on Device Performance 

      Otakwa, R V M; Simiyu, J; Waita, S M; Mwabora, J M (School of Physical Sciences, 2012)
      Effects of air mass on the performance of a dye-sensitized solar module (DSSM) have been investigated in a tropical area in Nairobi, Kenya. Outdoor measurements were performed at different times on different days and a ...

    • Application of Dye-Sensitized Solar Cell Technology in the Tropics: Effects of Radiation Intensity and Temperature on DSSC Performance 

      Otakwa, R V M; Simiyu, J; Waita, S M; Mwabora, J M (School of Physical Sciences, 2012)
      Effects of radiation intensity and temperature on the performance of a dye-sensitized solar module (DSSM) have been investigated in a tropical area in Nairobi, Kenya. Outdoor measurements were performed on cloudless ...

    • Estimation of Annual Effective Dose and Radiation Hazards due to Natural Radionuclides in Homa Mountain, southwestern, Kenya 

      Otwoma, D; Patel, J P; Bartilol, S; Mustapha, A O (ScholarOneSchool of Physical Sciences, 2000)
      The radiological hazard of naturally occurring radioactive material in Homa Mountain found in southwestern Kenya was investigated after 210 point measurements and 44 samples were analyzed. In situ measured average outdoor ...

    • An investigation of the structure beneath Magadi area in Southern Kenya Rift using gravimetric data 

      Githiri, J. G.; Patel, J. P.; Barongo, J. O.; Karanja, P. K. (School of Physical Sciences, 2012)
      Magadi area is located in the southern part of the Kenyan rift, an active continental rift that is part of the East African Rift system. Local seismic activity monitored previously around Lake Magadi revealed an earthquake ...

    • Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering 

      Waita,M; Aduda, BO; Mwabora, JM; Niklasson, GA; Granqvist, CG; Boschloo, G (ElsevierSchool of Physical Sciences, 2009)
      Thin TiO 2 (anatase) films were prepared by reactive DC magnetron sputtering and characterized in detail. Specifically, they were tested as comp act blockin g underlayers in dye-sensitized solar cells. Elastic recoil detection ...

    • Implementing Is In Developing Country He Context: Towards Creating A Favourable Implementation Context 

      Wausi, Agnes N; Waema, Timothy M. (School of Computing and Informatics, 2010)
      The implementation of Information Systems (IS) in the higher education learning institutions in Kenya has been increasing and seen varied results. Research has reported higher chances of IS failures in developing countries. ...

    • Tertiary ICT Education in the East African Community (EAC): Human Capital and Curriculum Development 

      Anthony, Rodrigues J; Wafula, J Muliaro (School of Computing and Informatics, 2008)
      The liberalization of education has fostered an unprecedented demand especially at the tertiary level. In several deliberations, human capital ultimately emerges as the decisive factor governing the success of any endeavor ...

    • Internet Utilization: A Case of Connected Rural and Urban Secondary Schools in Kenya 

      Kiptalam, George Kibet; Rodrigues, Anthony Joachim (School of Computing and Informatics, 2010)
      This paper looks at the utilization of the Internet among teachers and students in connected rural and urban secondary schools in Kenya. A conceptual framework composed of variables which can explain Internet utilization ...

    • Mobile Interfaced Crops Diagnosis Expert System (MICDES): a case for rural Kenyan farmers 

      Ochieng, Daniel Orwa; Waema, Timothy Mwololo (Inderscience Enterprises Ltd.School of Computing and Informatics, 2012)
      This paper describes a prototype case-based reasoning expert system that enables farmers to get assistance with crop diagnostics and other extension services through the web via a dynamic website or through mobile phones. ...

    • Innovative Design Approach for Technology Adoption for illiterate and Semi-illiterate Users in Rural Kenya 

      Ochieng, Daniel Orwa; Macharia, Lucy (School of Computing and Informatics, 2006)
      Designing and developing user centered interfaces for users in rural Kenya presents the designer with exceptional challenges which in turn have provided a unique opportunity for innovation. Majority of the populace in ...

    • An efficient agent-based wireless communication model 

      Okuku, Bernard O; Opiyo, Elisha T O (School of Computing and Informatics, 2003)
      A wireless communication system is a distributed network of semi-autonomous processing nodes that work together to solve a single problem [5]. Cellular radio provides mobile phone service by employing a network of cell ...

    • Grid computing as a dynamic domain for multi-agent systems based scheduling 

      Opiyo, Elisha T. O.; Ayienga, Erick; Getao, Katherine; Manderick, Bernard; Okello-Odongo, William; Nowe, Ann (School of Computing and Informatics, 2003)
      ‘Grid computing’ is a recently coined terminology that captures the desire to offer computing services in a widespread, transparent and reliable manner similar to the way electrical grid systems supply electricity. Grid ...

    • Issues In Grid Computing In The Context Of Education 

      Opiyo, Elisha T. O.; Ayienga, Erick; Getao, Katherine; Manderick, Bernard; Okello-Odongo, William; Nowé, Ann (School of Computing and Informatics, 2008)
      Grid computing and e-Education are areas that are separately, attracting interest of several researchers. Grid computing is concerned with provision of computing and data storage services to a wide group of users backed ...

    • Searching for Optimal Schedule for Parallel Machines Using an Agent-based Technique 

      Opiyo, Elisha T. O.; Ayienga, Eric; Getao, Katherine; Okello-Odongo, William (School of Computing and Informatics, 2008)
      In this paper the scheduling of n independent jobs on m non-identical machines is considered for a large concrete schedule space for 30 jobs and 6 machines. The schedule space is about 1023 which is large enough to render ...

    • Multi-agent systems scheduler and open grid computing standards 

      Opiyo, Elisha T. O.; Ayienga, Erick; Getao, Katherine; Manderick, Bernard; Okello-Odongo, William; Nowé, Ann (School of Computing and Informatics, 2000)
      Grid computers are integrated environments of software and hardware that are inter-connected and allow sharing of computing resources. A user of a grid computer has the impression of working with a single powerful computer. ...

    • Computing research challenges and opportunities with grid computers 

      Opiyo, Elisha T O; Ayienga, Erick; Getao, Katherine; Manderick, Bernard; Nowé, Ann; Okello-Odongo, William (School of Computing and Informatics, 2008)
      Grid computers are integrated environments in which software and hardware resources are pooled in ways that give any user the impression of working with a single fast computer. This paper examines the current advances in ...

    • License Plate Recognition System: Localization for Kenya 

      Wambui, P.N.; Opiyo, E.T.O.; Rodrigues, A.J. (School of Computing and Informatics, 2000)
      This paper describes the development of a reliable and accurate License Plate Recognition (LPR) system. In view of its potential application in traffic monitoring systems and highway toll collection, LPR systems have ...

    • Agent Based Model for Payment Systems Integration 

      Ochomo, Zablon O; Opiyo, Elisha; Okello-Odongo, William (School of Computing and Informatics, 2000)
      In East Africa and Africa in general, we have several innovations in the payments processing sector that are each aimed at solving a critical business function. Currently, we have payment systems such as mobile payment ...