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Intellectual Property Challenges in Digital Library Environments

Tutu, James Macharia (2018)

Intellectual property poses a major challenge to digital libraries. This is because access to information in digital libraries is limited by laws, licenses and technology adopted by intellectual property owners. Similarly, ...

Investigation on Optimal Cutting Parameters in Turning AISI 8660 Steel Using Silicon (Sic) Whisker Reinforced Ceramic Tool

Wathigo, James Mwangi; Keraita, J.N.; Byiringiro, Jean B.; Muguthu, J.N. (IOSR Journals, 2017-08)

This research was to investigate the effects of process parameter that is cutting speed, feed rate, depth of cut and machining time on the response variables in turning AISI 8660 material using whisker reinforced ceramic ...

Profit based unit commitment using evolutionary particle swarm optimization

Bikeri, Adline K.; Kihato, Peter K.; Muriithi, Christopher. M. (2015)

The profit based unit commitment (PBUC) problem determines an optimal unit commitment schedule for a generation company (GENCO) participating in a deregulated environment with the aim of maximizing its profit. This is ...

MPPT of a standalone wind energy conversion system using magnetostrictive amorphous wire speed sensor and fuzzy logic

Ndirangu, J. G.; Nderu, J. N.; Muriithi, Christopher. M.; Muhia, A. M. (2014)

This paper details the design and implementation of a Fuzzy Logic based controller for Maximum Power Point Tracking (MPPT) of a case study standalone wind energy conversion system(WECS). A magnetostrictive amorphous wire ...

Profit based unit commitment in deregulated electricity markets using a hybrid lagrangian relaxation - particle swarm optimization approach

Bikeri, Adline K.; Muriithi, Christopher. M.; Kihato, Peter K. (2017)

In deregulated electricity markets, individual generation companies (GENCOs) carry out independent unit commitment based on predicted energy and revenue prices. The GENCOs unit commitment strategies are developed with the ...

A review of multi-objective methods for optimal location and capacity of distributed generations in modern power systems

Karanja, J. M.; Ngoo, L. M.; Muriithi, Christopher.M. (2017)

Penetration of distributed generation (DG) units in distribution system has increased rapidly stimulated by reduced network power loss, improved bus voltage profile and better power quality. Appropriate location and capacity ...

Profit based unit commitment in deregulated electricity markets using a hybrid lagrangian Relaxation - particle swarm optimization approach

Bikeri, Adline K.; Muriithi, Christopher M.; Kihato, Peter K. (2017)

Abstract—In deregulated electricity markets, individual generation companies (GENCOs) carry out independent unit commitment based on predicted energy and revenue prices. The GENCOs unit com-moment strategies are developed ...

Performance review of the VSC-HVDC based controllers

Muriuki, J. K.; Muriithi, Christopher M.; Ngoo, L. M.; Nyakoe, G.N. (2016)

The Voltage Source Converters, High Voltage Direct Current (VSC-HVDC) system is the most preferred alternative technology for transmission and distribution of electrical power due to its intrinsic distinctiveness in ...

Shore to ship power for Mombasa port possibilities and challenges

Karue, C. N.; Murage, D. K.; Muriithi, Christopher M. (2016)

Control of air pollution from docked ships is one challenge that ports encounter in their effort to reduce operational environmental impact. Ship-to-shore power has been identified as one technology to reduce emissions by ...

Optimal Placement of FACTS devices using voltage Stability Indices

Mutegi, A. M.; Kihato, P. K.; Muriithi, Christopher.M.; Saulo, M. J. (2016)

Power System Voltage stability remains a major challenge for power utilities across the world. This research uses static load flow methods namely the voltage stability indices to come up with an optimal placement of FACTS ...

Key performance indicators for manufacturing safety in paint manufacturing: A case of kenyan industry.

Kimanzi, Enoch.; Ikua, Bernard; Mbuya, Thomas. (2015)

Manufacturing safety is a key priority in the success of any business, as it can affect both the present and future competitive position of an organization. Organizations must measure ...

The use of RC4 Encryption for Smart Meters

Kamau, Lincoln; Kibet, Philip; Muriithi, Christopher M. (2014)

The electrical power grid is undergoing improvements and is being transformed to the Smart Grid. Smart Grid makes use of two way flow of power and information to better monitor, plan and control the electrical power grid. ...

Comparative analysis of SCIG and DFIG based wind generation on transient stability of the Kenyan power system

Orenge, R. S.; Muriithi, Christopher M.; Nyakoe., G.N.; Muisyo, I. N. (2014)

Generation of Electrical power from wind is achieved using the two mainly available generator technologies. These technologies are the squirrel cage induction generators (SCIG) and doubly fed induction generators (DFIGs). ...

The dependency of bus voltage and frequency in load shedding

Mwaniki, C.; Muriithi, Christopher M.; Abungu, N. O (2013)

Load shedding schemes proposed in literature so far use voltage and frequency parameters separately. The individual consideration of these indices may not be reliable or effective, and may even lead to the over load shedding ...

Design optimization of a renewable hybrid energy system

Obasi, J. O.; Ngoo, L. M.; Muriithi, Christopher M. (2013)

This paper proposes the optimal design of a renewable hybrid energy system consisting of solar, wind energy with battery storage suitable for application in remote areas. The study investigates the possibility of reducing ...

A stabilized controllability of selemion CMV-based IPMC actuators in the extremely low humidity environment

Ngetha, H.; Sasaki, M.; Tamagawa, H.; Ikeda, K.; Ito, S. (2013)

Selemion CMV-based IPMC (Ionic Polymer Metal Composite) actuators have numerous promising applications in designing autonomous moving structures. This paper presents the electric properties obtained from the analysis of ...

Opportunities and challenges for smart grid communications

Kamau, Lincoln; Kibet, Philip; Muriithi, Christopher M. (2010)

The current power grid is in the verge of being improved. Recent technological advances have made possible the creation of a new and improved grid known as the smart grid. Smart grid allows for better interaction between ...

Effects of Career Stagnation on Performance in Public Service: A Case of Murang’a County Government

Wawira, Bancy Ngondi; Bulitia, Godrick; Machogu, Clifford; Wanjala, John W. (IJSR, 2015)

Devolution is generally defined as a process of transfer of political, administrative and fiscal management powers between central government and lower levels of government, primarily operating at city and region levels ...

Computer Laptop Project Strategy for Basic Education Schools in Kenya

Mariga, Geoffrey; Ogenga, Stephen; Shikali, Casper; Muliaro, Joseph (IJICT Journals, 2017-05)

Kenya’s Vision 2030 recognizes the enabling role of Information and Communication Technology (ICT) and anchors some of its key aspirations upon the availability and adoption of computers for schools. The overall objective ...

Suitability of aggregation methods of induction motor models for transient stability load modeling of Kenya power transmission and distribution system

Kinyua, J. M.; Muriithi, Christopher M. (2010)

Current trend indicate that there has been increase on power outage frequency. This has partly been as a result of unstable power system with very small security margin of operation. Therefore, this paper focusses on the ...

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