Browsing by Author "Nigussie, Meseret"

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    Assessment of Occupational Noise Exposure,Temporery Hearing Loss and Associated Factors Among Secondary Aluminum Production Factory Workers in Debre Berhan Town, Ethiopia.
    (Addis Ababa University, 2023-12) Nigussie, Meseret; Wakuma, Samson (PhD.); Tefera,Yifokire(PhD)
    Introduction: Occupational noise is a widespread risk factor with a strong evidence base linking it to an important health outcome (hearing loss).Beside the fact that hearing loss brought on by industrialization is currently a significant public health issue in sub-Saharan Africa, including Ethiopia, Objective: To assess occupational noise exposure, temporary hearing loss, and associated factors among secondary aluminum production factory workers in DebreBerhan Town. Ethiopia Methods: An institutional-based cross-sectional study design was employed from April 1, 2023, to June 30, 2023. The data collection methods were observational checklists, face-to-face interviews, aerial and personal noise level measurements. Trained data collectors participated in the data collection. A total of 458 production workers from the six departments were directly interviewed for the questionnaires, and again, 30 individuals from those production workers, five from each six departments, were selected randomly based on the similar exposure group (SEG) technique for personal noise dosimeter measurements. The data were entered into Epi info version 7 and exported to SPSS version 21 for analysis. Bivariate and multivariable logistic analyses were used to identify the associated factors. Statistical significance was declared using a 95% confidence interval and a p-value of < 0.05. Results: A total of 458 workers participated in this study, making the response rate 100%. Among the participants, 276 (60.1%) were males, with a mean age of 25.3 (+3.64) years. The prevalence of temporary hearing loss among workers was 69%, 95% (CI, 64.5-73.2%).Working departments and working hours were significantly associated with temporary hearing loss. The maximum average noise exposure levels for an 8 hours working day were recorded in the cold rolling mill (96.2 ± 0.82 dB (A)) and sizing (94.6+ 2.88 dB (A)) work sections. Conclusion: - This study indicated that workers in a secondary aluminum production factory are exposed to a very high noise level with a high prevalence of hearing loss. Working departments and duration of exposure (length of working hours) were the determinant factors to hearing loss. Recommendation: - The factory should implement noise control methods, such as engineering or administration with providing hearing protective devices to reduce the noise exposure of workers.
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    The Effect Of Organizational Culture On Employees’ Perceived Performance: The Case Of Berhan International Bank S.C
    (Addis Ababa University, 2018-10-21) Nigussie, Meseret; Beyene, Abeba (PhD)
    This study investigates the effect of organizational culture on employees’ perceived performance. The aim of this study is to assess and examine the effect of organizational culture on employee performance in Berhan International Bank S.C.. The conceptual framework was designed by treating organizational culture as an independent variable and employee performance as dependent variable. To achieve the objective, six research questions and five hypotheses were formulated. Organizational culture was further expressed using specific culture dimensions such as involvement, consistency, adaptability and mission. Explanatory or causal research design with mixed research approach was applied. The organizational culture questionnaire was adopted from Denison (1990) and the employee performance questionnaire was adopted from Onyango (2014). In order to check the reliability and internal consistency of the questionnaire, cronbach alpha was tested. Furthermore, pilot test was conducted before the distribution of the questionnaires. The data were obtained by an interview and survey questionnaires consisted of 54 statements with five point Likert scale. The study took 250 target population with response rate of 132 respondents. The data were analyzed using SPSS (version 20). Both Descriptive as well as inferential statistics were used to analyze the data and interpret results. According to the results of regression analysis, it can be concluded that 57.6% of variation in employee performance is accountable for organizational culture. Specifically, Consistency and Adaptability sub culture dimensions have a positive and a high significant effect on employees’ performance. Based on the research findings and research conclusions, major recommendations such as; employees’ capacity development, performance management system, and enhancing internal communication tools were offered for possible consideration by Berhan International Bank S.C.