Analysis of the Thermal Insulation Properties of Rice Husk Ceiling Board Compared to Selected Fibre Based Ceiling Materials Used in Yola Metropolis, Adamawa State Nigeria
Gowon Kerter Eric,
Bulama Kallamu Hensley
Issue:
Volume 1, Issue 4, December 2017
Pages:
83-88
Received:
25 November 2017
Accepted:
9 December 2017
Published:
10 January 2018
DOI:
10.11648/j.ajmme.20170104.11
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Abstract: The thermal conductivity of a material therefore represents the quantity of heat that passes through a meter thickness per square per second with one degree difference in temperature between the faces. Thermal conductivity is regarded as the most important characteristic of a thermal insulation since it affects directly the resistance to transmission of heat that a material offers. The lower the thermal conductivity value, the lower the overall heat transfer in a building material. Hence the study selected three materials namely: Plaster of Paris (P.o.P), Plywood and Isorel (Masonite) used as ceiling boards in Yola, Nigeria and compared to rice husk ceiling board. The selection of these ceiling materials is due to their predominant usage as ceiling materials in the harsh Yola metropolis. The objective of this study is to investigate the thermal insulation properties of rice husk ceiling boards compared to other conventional fibre related ceiling board used in Yola Metropolis in Adamawa State, Nigeria. To achieve this, the steady-state method using Lee-Charton’s apparatus was adopted to analyze the thermal conductivities of the chosen materials. The results obtained showed that, P.o.P exhibits the best insulation property followed by rice husk ceiling board, plywood then Isorel ceiling board with thermal conductivities of 0.12W/mK, 0.48W/mK, 0.82W/mK and 1.08W/mK respectively. Their corresponding thermal resistivities are 6.44mK/W, 4.65mK/W, 2.98mK/W and 1.92mK/W. From the results obtained, it is concluded that P.o.P is the best insulation property followed by rice husk ceiling board among the materials used in the study area. The study therefore provides a guide to intending builders and civil Engineers on the selection of building heat insulation ceiling materials in Yola metropolis as well as other harsh weather zones of tropical Africa.
Abstract: The thermal conductivity of a material therefore represents the quantity of heat that passes through a meter thickness per square per second with one degree difference in temperature between the faces. Thermal conductivity is regarded as the most important characteristic of a thermal insulation since it affects directly the resistance to transmissi...
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The Impact of Managers’ Emotional Intelligence and Employee Performance in Gweru and Kwekwe City Councils in Zimbabwe
Vonai Chirasha,
Crispen Chipunza,
Lewis Dzimbiri
Issue:
Volume 1, Issue 4, December 2017
Pages:
89-99
Received:
21 June 2017
Accepted:
5 July 2017
Published:
12 January 2018
DOI:
10.11648/j.ajmme.20170104.12
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Abstract: The relationship between emotional intelligence and performance has increasingly gained popularity with the assertion that managers’ emotional intelligence plays an important role in providing supportive management for employees. The main aim was to establish the relationship between managers’ emotional intelligence and employee performance. The research was purely quantitative descriptive survey of Gweru and Kwekwe City Councils in Zimbabwe. Purposive sampling was used to select 32 line managers and stratified random sampling to select 400 employees. Goleman’s emotional competence inventory was used to measure managers’ emotional intelligence while performance appraisal was used to assess employee performance. It was established that all managers’ emotional intelligence variables significantly impacted on employee performance (all p-values=0.000). A positive correlation supported the hypothesis that managers’ emotional intelligence has a relationship with employee performance. A regression analysis was carried out to establish the effect size of managers’ emotional intelligence on employee performance. It was established that managers’ emotional intelligence had an effect on employee performance ranging from R-square= 0.177 (17.7%) to R-square = 0.836 (83.6 %). The study also concluded that there was a great impact of managers’ emotional intelligence on employee performance.
Abstract: The relationship between emotional intelligence and performance has increasingly gained popularity with the assertion that managers’ emotional intelligence plays an important role in providing supportive management for employees. The main aim was to establish the relationship between managers’ emotional intelligence and employee performance. The re...
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