Browsing by Author "Getachew, Hana"

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    The Cause and Significance of Crack and Structural Defect Assessment of School Building in Dire Dawa City (Case Study on Legehare Cracked School Building in Dire Dawa City)
    (Addis Ababa University, 2017-06) Getachew, Hana; Zekaria, Adil (PhD)
    This thesis focuses on investigating the cause of significant crack on a five story School Building located in Dire Dawa city. The building is constructed with reinforced concrete frame structure with infill hollow block concrete walls. Large diagonal crack is observed on many walls coupled with minor crack on some structural members. The fact that this defect is observed within three to five service years of the building brought attention for investigation. In this paper different approaches are followed to reach to a conclusion. Diagonal crack on many walls is the first cue for a possible differential settlement problem. Hence, Soil samples were collected around the building and different laboratory tests related to settlement have been carried out. According to the tests and settlement estimation result, there is a significant differential settlement among the foundations. In addition to the settlement analysis, conventional structural analysis and design has been conducted to verify whether the building structure satisfies the revised Ethiopian code of ES EN 1992 and ES EN 1998:2015. The result shows that most of the structural members are found to be safe with the exception of only few columns and beams were over stressed. The building frame was further analyzed by considering the effect of foundation settlement. The total settlement obtained from the soil investigation was used as a vertical ground displacement at the corresponding foundation levels and the building was redesigned for this displaced condition. The result from the design showed that significant number of structural members (beams and columns) do not satisfy the requirement of the Ethiopian building code.
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    Knowledge, Practice, and Factors Influencing Publication Ethics among Health Researchers and Academicians: Institution-Based, Cross-Sectional Study
    (Addis Ababa University, 2024-07) Getachew, Hana; Taye,Girma (PhD); Woldeamanuel,Yimtubezinash (MD, MSc, PhD)
    Background: Publication ethics are rules of conduct for publishing scientific research results. They aim to ensure transparency, integrity, and accountability among writers, publishers, editors, reviewers, and readers. The International Committee of Medical Journals Editors (ICMJE), World Association of Medical Editors (WAME), and the Committee on Publication Ethics (COPE) are organizations working to provide guidelines and recommendations for authors, editors, and reviewers. These organizations aim to promote integrity, openness, and responsibility in publishing research results, ensuring high-quality science and avoiding potential moral dilemmas. However, the extent to which publication ethics standards are known or adhered to is not well known in Ethiopia. Objective: To assess knowledge, practice, and factors influencing practice of publication ethics among health researchers in three institutions. Methods: A cross-sectional study was conducted at three institutions to examine knowledge, practice, and factors influencing publication ethics among health researchers and academicians. A total of 588 respondents were obtained from the three institutions, stratified sampling approach was used. The questionnaire was adapted and modified from an international survey and a self-administered questionnaire was given to participants. The data was analyzed using SPSS statistical software version 27. Results: This study revealed that a significant number of the participants lack knowledge about prior publication ethics, dual submission, self-plagiarism, and image manipulation. Authorship, conflict of interest, and plagiarism were well-understood by most respondents. However, those who engage in dual submission and have a conflict of interest were found to be more likely to violate publication ethics. This study also shows that an increase in experience leads to a 7% decrease in violation of publication ethics practices, while an increase in knowledge leads to an 11% decrease. These findings highlight unethical practices and suggest areas for improvement in publication ethics. Conclusion: The study reveals varied levels of knowledge and practice regarding publication ethics among health researchers and academicians, with gaps in consistent disclosure and adherence to ethical principles. Targeted interventions, continuous education, mentorship, and strengthening disclosure policies can improve standards.