Browsing by Author "Alemayehu, Sisay"

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    Causes and Circumstances of Deaths of Patients Admitted to the Adult Medical Intensive Care unit of Tirunesh bejing General Hospital Addis Ababa, Ethiopia.
    (Addis Abeba University, 2021-06) Alemayehu, Sisay; Debebe, Finot(Emergency Medicine Specialist); Michael, Mebrate(MSc IN EMCN)
    Background: Intensive care unit (ICU) is a special unit of a hospital that provides intensivetreatment for patients with severe life-threatening illnesses which require uninterrupted care and close monitoring with life support equipment. The mortality rate is still very high in most ICUs especially in the developing countries due to late presentation of patients, unavailability of welltrained staff and lack of life support equipment. This study tried to identify the causes and circumstances of the death of critically ill patients. Objectives : To identify causes and circumstance of deaths of patients admitted to the adult intensive care unit (ICU) at Tirunesh Beijing Hospital public hospital, Addis Ababa, 2021. Methods: A retrospective cross-sectional study was conducted. All patient charts who were admitted and died in adult ICU from Sept 2018 to August 2020 and met the criteria were included. Data was collected by using structured and pretested checklists. SPSS version 25 software was used for data entry and analysis. Result: A total of 193 death cards were reviewed, of which 116(60.1%) were males and 77(39.9%) were females. Common deaths 91(47.2%) occurred in the age group20-40yrs with meanstandard deviation of 43.92±17.26 years. Stroke is the leading cause of death accounting for 27(14%) of total death followed by Retroviral infection (13.5%).The mortality of patients admitted in MICU was 39% and 52.8% of the deaths took place in the first 72 hours of admission to theintensive care unit. Conclusion: The total mortality was considerably high and it is affecting the young age groups. Majority of the patients are dying in the first 72 hours, indicating that most patients are visiting the intensive care unit in the late stages of their illnesses. Further study is required for better understanding of the existing situation
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    Determinant Factor of Automobile Brand Choice (The case of Ethiopian Automotive Dealers Market)
    (Addis Ababa University, 2017-06-16) Alemayehu, Sisay; Mesfin, Tewodros (PhD)
    The Ethiopian automobile sector has emerged as one of the significantly developing and growing sectors in the last decade. The automobile industry of Ethiopia has witnessed a tremendous growth in all sections, right from two wheelers, three wheelers, trucks and passenger car segment. The study assess factors that influence brand choice with a sample size of 300 respondents was selected using convenience sampling technique. The research paper explored the proposition that brand choice behavior is influenced by five consumption values, these being functional, social, emotional, conditional and epistemic values using SNG (1991a) theory of consumption values model .Based on the theoretical frame work and objectives of the study 26 items were provided in a 5 point Likert scale to the respondents. The gathered data were analyzed by descriptive and inferential statistics. The correlations between determinants of brand choice and consumer preferences are also empirically tested. All possible correlations between determinants of brand choice and consumer preferences are also empirically tested. The purpose of this paper is to identify determinant automobile brand preference on the selected six dealer’s brand. Among the determinant factors, brand name, attributes, emotional connection, image, spare part, accessibility, and price are found out to be significant determinant of brand preference while external influence are found to be insignificant in determining brand preference. In general, dealers this segment market should provide brand that has sell with reasonable price, has to also focus on vehicles attributes, provide better maintenance, also give much more focus on advertisement connection and image of the car and emotional connection.
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    Seismicity of Afar and the Main Ethiopian Rift From 2000 - 2002 G.C.
    (Addis Ababa University, 2011-06) Alemayehu, Sisay; Ayele, Atalay (PhD)
    Earthquakes data recorded between 2000 and 2002 are used to study the seismicity of Ethiopia mainly focused around Afar and the Main Ethiopian rift. The locations of 238 local earthquake are determined using P- and S- wave arrival times recorded on three or more stations that resulted to a maximum of 1.5 root mean square (RMS). Previous studies of seismicity by Brazier et al., 2006 has been revisited using the same data from IRIS/PASSCAL broadband seismic experiments and adding more from ESSN (Ethiopian Seismic Station Network) sources. Comparing the results in this study with Brazier et al., 2006's, it is found that eight bogus events (earthquakes that didn't occur in the real world) and six more teleseismic earthquakes are reported as if they occurred in the Ethiopian neighborhood. On the other hand, it is observed that Brazier et al's work, which is published in Bulletins of Seismological Society of America (BSSA), reported 25 earthquakes that are located with readings from seismic stations less than three which puts doubt on the accuracy of the seismicity study. Another 53 new earthquakes are identi ed in the database and located in this study which has improved details of the seismicity of the region for the time period considered. A Fortran program is written in 0.5 by 0.5 degree window and with 0.5 degree sliding window in order to map the seismic energy release. The distribution of epicenter in this study shows high seismic activity around 90N and 40:500E; 9:500N and 39:500E during the study period, these epicenters are close to the N - S trending Ankober region, Kessem area and Dofen volcano. Coda magnitudes are also estimated for the reported events. Similarly b-values are estimated using both the least squares method and the maximum likelihood method. b-value of 0.9 0.09 and 1.10 were obtained using the maximum-likelihood method and using least square method determined respectively for the highly seismic Ankober-Dofen region during the study period. On the other hand, seismic energy map is developed for the whole region. The relatively high b-value estimated and the seismic energy mapping showed that seismic energy are released in the form of small magnitude.