AAU Institutional Repository (AAU-ETD)
Addis Ababa University Institutional repository is an open access repository that collects,preserves, and disseminates scholarly outputs of the university. AAU-ETD archives' collection of master's theses, doctoral dissertations and preprints showcase the wide range of academic research undertaken by AAU students over the course of the University's long history.
How to Submit Your Work
The repository contains scholarly work, both unpublished and published, by current or former AAU faculty, staff, and students, including Works by AAU students as part of their masters, doctoral, or post-doctoral research
- All AAU faculty, staff, and students are invited to submit their work to the repository. Please contact the library at your college.
You may contact digirep@aau.edu.et.with any questions about the repository
Colleges,Institutes in AAU-ETD
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Recent Submissions
Production and Evaluation of the Biotechnological Potential of Alkaliphilic Protease from Tannery Waste Microbes
(Addis Ababa University, 2025-02-01) Yoseph Sisay; Addis Simachew
The global leather industry generates significant volumes of tannery waste, contributing to environmental degradation and public health concerns. The study investigated the production of alkaliphilic protease from tannery waste microbes, and its potential applications for detergent and leather industries were also evaluated. After the isolation of more than 100 bacterial strains and screening of 22 alkaline protease-producing bacteria, strain YATW18 has been identified as the most efficient producer of extracellular alkaline protease with 92.65 U/ml enzyme activity in 48 hours. Molecular characterization has assured the genus and species name of strain YATW18to be Alkalihalophilus pseudofirmus. The partial sequence of Alkalihalophilus pseudofirmus strain YATW18 16S rRNA gene was submitted to the NCBI database and the accession number was obtained as PP942174. Fructose as a carbon source exhibited the highest enzyme activity with an average yield of 82 2.98 U/ml, and peptone as a nitrogen source resulted in the highest enzyme activity of 96.86 2.98 U/ml. From locally available substrates, water hyacinth has demonstrated the highest alkaline protease yield of 661.85 10.98 U/g. The mean differences in optimizing parameters including carbon sources, nitrogen sources, and locally available substrates were statistically significant at P 0.05. Physicochemical characterization of alkaline protease showed optimum activity at 55 and pH 10. The enzyme reached its saturation level within 20 minutes of incubation time and then linear activity was observed until 45 minutes. Alkaliphilic protease (77.92 U/ml and 99.6 U/ml) showed high protein (egg yolk) stain removal efficiency and dehairing (goat and sheep skins) capacity
Hybridity and Cultural Sharing Of Oromo And Sodo (Kistane) Gurage Ethnic Groups
(Addis Abeba Universty, 2026) Tesfaye Kufa; Tadele Tilahun (Ass. Prof)
In this study the Oromo and Sodo (Kistane) Gurage Ethnic Groups in Ethiopia are Examined in Relation to their Exchange of Traditional Practices and the Development of Cultural Hybridity. It Looks at how Changing Interethnic Relations have Influenced Religious Rites, Marriage Traditions and Social Festivities. The Study Emphasizes how Cultural Adaptation and Exchange have Enabled Each Community to Absorb Aspects of the others Traditions Resulting in a Diverse yet Shared Set of Customs. This Approach Analyzes Anthropological Literature and Carries out in-depth Interviews with Local Seniors. The Study uses Qualitative Interviewing Besides Ethnographic Methods in Order to Collect Firsthand Accounts of Cultural Practices, Belief Systems and Daily Rituals. The Impact of Musical Hybridity Defined as Common Rhythms and Performance Styles is Highlighted as a Crucial Tool for Enhancing Intergroup Understanding. In this View Music is an Ideal Artistic Medium for the Expression of Hybrid Identities and for Conflict-Resolution in Informal Spheres like Rituals and Social Gatherings. The Results are Consistent with More Extensive Studies Showing that in Multicultural Societies Music and Cross-Cultural Interactions can Foster Iclusive Identities and Reduce Social Barriers. In the end this Study Advances Knowledge of Cultural Hybridity as an Essential Tool for Maintaining Cultural Diversity and Promoting Harmonious Coexistence in Ethiopia's Intricate Social Environment.
The Fino Instrument: A Pillar of Yem Special Woreda's Cultural Heritage
(Addis Abeba University, 2026) Atnatiyos Neway; Melaku Yigezu (Phd)
This Research will Try to Explore the Cultural and Musical Significance of Fino, a Wind Instrument of Yem People Dwelling in Yem Zone of Central Ethiopia Regional State as well as Educational Values in a Sense to Preserve the Instrument and Musical Elements. The Research will Focus on the
Historical Backgrounds, Construction and Structure of the Instrument, ways of Playing and Socio cultural Role of the Fino in the Yem Community. The Researcher Used Ethnography Type of Qualitative Research Design. The Study Reveals that Life of the Yem Community is Closely Interrelated with Fino; in One way as a Musical Instrument, another way as an Identity and Cultural Symbol Which Enables Cohesion and Persistence of Yem Identity and Continuity. Fino has Important Roles in Festivals, Weddings, Social Gatherings and Cultural Heritages of the Community.
The Materials Used for Making Fino are of Local Sources and Handed Down to Next Generations by Traditional Craftsmanship and Informally Through Master-Apprentice Relationship. Musical Analyses of Selected Pieces (Amnebo, Arma, Wogor, Yeye and Waketa) Shows Characteristic Patterns Which May Relate to Communal Nature of Performance (Repetitive Structures, Modal-Tonality and Rhythmic Free Approach) and Ritual Meanings and Symbolism Attached to Them (Rich with Cultural Information) of the Fino Music. The Fino Culture is at Risk of Being Replaced by Modern Music and Lack of Inter-Generational Transmission. However the Essence of Fino's Existence Could be Guaranteed by Documentation, Inclusion in the School Curriculum and Through Community Involvement Preservation.
Examining the Authenticity of Ethiopian Indigenous Music: A Case Study of Sileshi Demise's (Gash Abera Molla) Yamral Hagere Music Project
(Addis Abeba University, 2026) Letarik Tilahun; Aklilu Zewide(Associate Professor)
In the Case of Diverse Country Like Ethiopia, It is Difficult to Establish a Self Singular Definition as a Homogenous Culture. Music can be Considered a Solution Between a Single Self-Definition of a Culture and More Culture as Unified One. This Thesis Mainly Focused on Extracting the Authenticity of Indigenous Ethiopian Music Through the Lens of the Project of Sileshi Demise (Gash Abera Molla) 'Yamral Hagere' Music Project. Aim to Analyze how Ethiopians Identify Musically in Common. This Thesis Examines the Musical Characteristics, Elements and Structures Through a Detailed Musical Investigation of Thirteen Tracks from the Album, Evaluating how they are Aesthetically Inclusive Through Authentic Lyrical Richness and Melodic Expressions. Data were Collected from Audio Recordings, Musical Discographies and Documents, Books, also an Articles to Evaluate the Authenticity of Ethiopian Indigenous Music.
The Findings of This Thesis Shows the ‘Yamral Hagere’ Project Serves as a Counter-Archive that Preserving Material Acoustic Purism Such as Traditional String Physics Synthesizing Among the Northern Monophonic Modes with Southern Vocal Polyphony to Resist Modern Commercial Flattening. Based on These Findings, this Thesis Recommends Restructuring Higher Education Music Curricula Beyond Simple Pentatonic Reductions and Updating National Cultural Policies to Grant Full Project Autonomy to Traditional Master Practitioners.
The Assessment of Igad’s Contribution to the Realization of African Continental Free Trade Area Afcfta
(Addis Abeba University, 2026-02-01) Dessalegn Kekkonen; Getahun Fenta
This study assessedIGAD’s Contribution to the realization of the AfCFTA and employed a qualitative approach based on key informant interviews using semi-structured questionnaires and document analysis. IGAD participated in the AfCFTA negotiations as an observer, but as a member of the AU Technical Task Force, it contributed for the establishment of the AfCFTA by drafting key documents and providing technical, logistical, and coordination support to its member states.Since then, IGAD has made efforts to support the ongoing AfCFTA implementation in the region. Nonetheless, its overall contribution remains limited due to challenges like inconsistent payment of assessed contributions and the accumulation of arrears by member states, weak trade integration arrangement in IGAD,mistrust and limited private sector engagement in the region andoverlapping REC membership of its member states. IGAD has an Economic Cooperation and Regional Integration Division, as well as initiatives and legal mandates and institutional frameworks for trade integration. However,four of Africa’s seven non-party states to the AfCFTA and five of nine non-members of the WTO are in the IGAD region. as a result, IGAD is the lowest performer in the trade integration dimension among all AU-recognized RECs.This study recommends IGAD to leverage AfCFTA momentum to establish a regional FTA, provide the IGAD Secretariat with a funded mandate to coordinate trade policy, and ensure all member states join the AfCFTA framework, member states must either fully fund IGAD's initiatives or pursue complementarity with advanced RECs preferably EAC and finally IGAD should narrow its areas of cooperation to a few core priorities. Otherwise, IGAD risks lagging in AfCFTA implementation and missing opportunities of continental trade integration.