SU Scholarly Articles

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Now showing 1 - 5 of 90
  • Publication
    Altruistic versus profit maximising system operators of rural power systems
    (IEEE, 2007-07-20) Sendegeya, A.; Amelin, M.; Soder, L.; Lugujjo, E.; Da Silva, I. P.; Da Silva, Izael
    This paper presents a methodology using Monte Carlo Simulation for analysing and compare the impact of two types of monopolistic rural power system operators (altruistic and profit maximising operators) on the probability distribution of tariff levels and reliability of the system. The market has price sensitive consumers. The developed model has been demonstrated on two power systems: only diesel genset and a wind-diesel hybrid system showing the impact of the generation costs and capacity of generation from wind on the tariff levels, expected profit and reliability.
  • Publication
    A method for field verification of the precision class of inductive voltage transformers
    (Institution of Engineering and Technology (IET), 1999-08-27) Brandao, A.F.; de Silos, A.C.; Ivanoff, D.; da Silva, I.P.; Da Silva, Izael
    It is shown here that the precision class of an IVT-inductive voltage transformer-can be verified in the field, using the results obtained in the usual tests of no-load loss and current, short circuit and winding ohmic resistances, performed with common meters. A graphic diagram-the Mollinger and Gewecke diagram-is employed together with the results of an accuracy test previously carried out in order to determine the exact value of the winding turns relation and of the primary winding dispersion reactance. These values are used to calculate phase and magnitude errors, that must obey standards and must lie between definite limits, defined by the precision class of the instrument. Some commercial IVTs were tested in order to check the validation of the procedure. The errors were compared with the ones obtained with the Shering-Alberti method (CA bridge and comparison with standard IVT).
  • Publication
    Kenya’s Water Act (2016) : real devolution or simply the ‘same script, different cast’
    (Nomos Verlagsgesellschaft mbH & Co. KG, 2019) Gachenga, Elizabeth
    The debate surrounding the enactment of Kenya’s Water Act (2016) and its relationship with its predecessor, the Water Act (2002), brings to mind the lyrics of a contemporary pop duet, ‘Same script, different cast’. As the jilted girl attempts to forewarn the current girl of the hurtful ways of her former boyfriend, the latter resists arguing he has changed. To persuade the impressionable new girl to see beyond the façade of the apparent change, the ex-girlfriend uses the expression ‘same script, different cast’ repeatedly, to demonstrate that all that has changed is the actors. In a bid to align the Water Act (2002) with the Constitution of Kenya (2010) (Constitution) and particularly to achieve the devolution enshrined in the Constitution, the Water Act 2016 was enacted following a long drawn out process beginning with the first draft Water Bill of 2012. Despite the amendments brought about by the new Act, critics argue that the Water Act (2016) is at most a superficial modification of the Water Act (2002) albeit with renamed institutions, thus evoking the parallel with the song.
  • Publication
    International Financial Reporting Standard (IFRS) 16: Leases
    (ICPAK, 2016-04) McFie, James Boyd
    IFRS 16: Leases was issued on 13 January 2016; it replaces IAS 17 Leases. The new Standard is effective from 1st January 2019: early application is permitted, provided the recently issued revenue Standard, IFRS 15 Revenue from Contracts with Customers is also applied. IFRS 16 requires all leases to be reported on a company’s balance sheet as assets and liabilities.
  • Publication
    Antecedents and consequences of customers’ complaining behaviour in Kenya using social media
    (2017) Njuguna, Simon Peter
    This study seeks to investigate the nature, antecedents and consequences of customer complaining behaviour (CCB) using social media in retail industry in Kenya. The study will use a multi–method research strategy. To address the research questions, both qualitative (netnography non-participatory and scenario-based methodology) and quantitative (exploratory and descriptive) research design will be employed. The netnography non-participatory approach will be used at the exploratory stage of the study to inform the survey research. The qualitative data (from the netnography and scenario-based) will be analyzed thematically. A narrative approach will be used to develop a scenario that will serve to provide a detailed insight into the experience of a customer. This study will contribute to the existing CCB literature in the following ways: the study will provide an understanding of CCB via social media channels where three psychological theories will be used to help in identifying relevant factors that motivate customers to complain about a product/service failure using social media. The findings will also help the service managers to develop appropriate intervention strategies that will enable then to effectively deal with customer complaints made through social media.