Browsing by Author "Tesfaye Tilahun"

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    Ethnobotanical Study of Medicinal Plants Used by the Community of Woliso District, South West Shoa Zone, Oromia Regional State, Ethiopia
    (Addis Ababa University, 2024-08) Tesfaye Tilahun; Tegenu Gelana
    This ethnobotanical study explores the traditional knowledge and use of medicinal plants by communities in the Woliso District, South West Shoa Zone, Oromia Regional State, Ethiopia. Despite the area's rich biodiversity and cultural heritage, documentation of local medicinal plants remains scarce. This research seeks to address this gap by identifying and cataloging plant species, their applications, and preparation methods utilized by community members. Data collection involved 62 randomly selected general informants (31 males and 31 females) and 38 traditional healers (33 males and 5 females) through questionnaires, focus group discussions, and direct observations. Various analytical methods were employed, including Jaccard's similarity index, informant consensus factor, fidelity level, and statistical tests like ANOVA and t-tests.The findings revealed 96 medicinal plant species from 42 families and 85 genera, used for treating 67 ailments in humans and livestock. Specifically, 82 species (85.42%) were for human health, 6 species (6.3%) for livestock, and 8 species (8.33%) served both purposes. Herbs were the most common growth form; while the Asteraceae family had the highest species count. Leaves were the most utilized plant part, with squeezing being the predominant preparation method. Oral administration was the most frequent route, accounting for 59.56% of uses. Factors such as gender, age, and education influenced knowledge of medicinal plants. Major threats to these plants included agricultural expansion and firewood collection, with no conservation initiatives currently in place. Raising awareness about the importance of conserving medicinal plants is essential to protect traditional knowledge and biodiversity in the area.
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    Factors that Contribute to the Problems Efl Learners Face in the Listening Skills Classroom
    (Addis Ababa University, 2008-06) Tesfaye Tilahun ; K. Amaliraj
    This study explores the factors that contribute to the problems learners encounter in EFL listening comprehension, assesses whether the factors are associated with the text, the speaker, the listener, or the environment, and identifies which particular factor poses the most difficulty for the learners. The subjects of the study were first year English major students of Bahir Dar University and 149 students who took the listening course in 2007/8 were selected for the study. Data was collected using questionnaire, interview, observation, material analysis and document analysis. The study confirmed that EFL learners in college encounter listening problems whenever they are engaged in EFL listening activities on the listening course. The study identified thirty six factors that influenced the learners listening comprehension, and it further identified that the learners’ listening difficulties emerged from the defects of the listening materials used in the course, from the students lack of exposure to native speaker English, and from the inconvenience of the listening environment where the EFL listening took place. The study also revealed that the students perceive native speaker pronunciation and fast speed of delivery posed the most difficulties for them while they are engaged in EFL listening activities.