Mekelle University Institutional Repository
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Item type:Item, Determinants of third-party logistics (3PLs) performance: in the case of humanitarian aid operations of INGOs & UN agencies in Tigray(Mekelle University, 2025-12-26) AREGAWI G/MARIAM WELDESAMUELThird-party logistics (3PLs) service providers have the pivotal role toward facilitating in delivery of humanitarian aids to save lives and alleviate suffers of vulnerable society in crisis areas like Tigray. This study aimed to identify the internal and external factors influencing the performance of third-party logistics (3PLs) service providers in delivering humanitarian aids from INGOs and UN agencies in Tigray. The study employed mixed-methods of quantitative and qualitative approaches, and it selected 84 respondent samples by using purposive sampling from INGOs, UN agencies, and 3PLs providers. Quantitative data were collected via Likert-scale surveys and analyzed using descriptive statistics and multiple linear regressions (MLR) model, while qualitative data were analyzed through content analysis method. The MLR tested ten hypotheses regarding to factors affecting 3PLs performance. Results confirmed that firm experience, organizational capacity, long-standing relationships, and risk management significantly and positively affect performances of 3PLs service providers while Political instability was found to have a significant negative impact. Other factors such as service quality, technology usage, and cost-effectiveness were not statistically significant. The model explained 78.6% of the variance in 3PLs performance, indicating strong explanatory power. Qualitative\ findings highlighted political instability, infrastructure damage, resource constraints, managerial weaknesses, and regulatory challenges as major barriers. Implications suggest that improving logistics performance requires strengthening firm capacities, fostering strategic collaborations, advancing risk management, upgrading fleets and infrastructure, incorporating technology, and advocating for political stability. Overall, this comprehensive analysis of the study provides actionable empirical insights and actionable strategies for humanitarian actors and policymakers to optimize the performances of 3PLs service providers to deliver humanitarian aids in the complex operational conditions effectively in conflict-affected regions like Tigray.Item type:Item, GEOPOLITICAL RIVALRIES IN THE HORN OF AFRICA AND THEIR IMPACT ON ETHIOPIA'S NATIONAL SECURITY(Mekelle University, 2025-11-25) TESFAY HAILUThe study's general objective is to examine the geopolitical rivalries of major powers and emerging regional powers in the Horn of Africa and their impact on Ethiopia's national security. It is well known that new political and security dynamism is emerging in the Horn of Africa every season. New events are emerging in the region due to the rapid political changes that are still taking place. This is the result of the geopolitical rivalries of major powers and emerging regional powers in the region to ensure their interest. Even though, studying the geopolitical rivalries in the Horn of Africa is very important to know their impact on Ethiopia's national security. It is known that; the geopolitical rivalries in the Horn of Africa are based on the interests of the countries. This also it has its own impact on Ethiopia's national security. Thus, the objective of this thesis was to analyze the geopolitical interests of major powers and to examine the influence of emerging regional powers in the Horn of Africa. The study also assesses how these interactions create security risks and opportunities for Ethiopia. The researcher used an exploratory research design and qualitative approach obtained from secondary sources such as books, documents, internet sources, journal articles, periodicals and newspaper stories were used to acquire the approach and data. The information gathered from secondary sources is therefore discussed analytically. Thematic analysis was used to analyze the collected data. The study's findings indicate that the HOA is experiencing new and tough geopolitical rivalry driven by geo-strategic, geo-economic, geo-security, vigilant containment, and resource competition. The geopolitical rivalry brings both risks and opportunities to Ethiopia. The rivalry posed a peace and security risk, exacerbating internal instability and adversarial powers may exploit the internal situation as an advantage to destabilize Ethiopia. If Ethiopia manages the regional dynamics properly, the rivalry has many opportunities such as economic, regional security stability. Recommendations for the betterment of the region and Ethiopia's national security are also clearly stated in the study. The paper stated that the issue is ongoing and needs further research and theoretical assessment. The country mentioned in this research, the ideas and things included in this study, directly or indirectly have a negative impact or an opportunity for Ethiopia's national security.Item type:Item, Dissertation Submission Test(MU2, 2026-02-02) Welegebrial, Tekleweyni GedayItem type:Item, Test Thesis(MU, 2026-02-02) Welegebrial, Tekleweyni GedayItem type:Item, The composition of fish communities of four Tekeze sub-basin rivers of Tigray, Northern Ethipia(Mekelle University, 2026-01-28) Belay Gebreyohannes HailuFreshwater fish communities are structured by a combination of abiotic and biotic factors, with habitat heterogeneity playing a key role in shaping their composition, distribution, and assemblage structure. This study aimed to investigate the fish community composition and the environmental factors influencing them in four rivers of the Tekeze sub-basin in Tigray, Northern Ethiopia: Atsela, Mesgi, Geba, and Worie. Water quality parameters were measured using standard probes, and fish sampling was conducted using electrofishing across two seasons (December 2019 and April 2020). A total of 2,917 fish belonging to 14 species, four families, and three orders were recorded. Cyprinidae was the dominant family, accounting for 79% of the species. Only two species, Garra blanfordii and Garra dembecha, were common to all rivers. Chelaethiops bibie and Chiloglanis niloticus were uniquely recorded from Worie and Geba rivers, respectively. Labeobarbus intermedius was the most abundant species in Worie and Geba, while Garra species dominated in all rivers. Water quality parameters varied across rivers, with higher temperatures, conductivity, and turbidity observed in lowland rivers (Geba and Worie) compared to highland rivers (Atsela and Mesgi). Fish species richness and diversity were higher in lowland rivers, with Worie recording the highest richness (11 species) and Mesgi the lowest (2 species). Multivariate analysis (CCA) indicated that altitude, temperature, turbidity, salinity, and chlorophyll-a were key environmental drivers influencing fish community structure. The study highlights the importance of altitude and associated environmental gradients in shaping fish assemblages in the Tekeze sub-basin. The findings underscore the need for sustainable management of riverine habitats, particularly in light of anthropogenic pressures such as water abstraction, sand mining, and riparian degradation. Conservation efforts should focus on maintaining habitat integrity and ecological connectivity to preserve fish diversity and support local fisheries.