Browsing by Author "Tadesse Nigussie"

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    Application of Data Mining Techniques to Support Customer Relationship Management at Ethiopian Airlines
    (Addis Ababa University, 2002-07) Woubishet Henock; Abebe Ermias (Ato); Meshesha Million; Tadesse Nigussie
    The airline industry is highly competitive, dynamic and subject to rapid change. As a result, airlines are being pushed to understand and quickly respond to the individual needs and wants of their customers. Most airlines use frequent flyer incentive programs to win the loyalty of their customers, by awarding points that entitle customers to various travel benefits. Furthermore, these airlines maintain a database of their frequent flyer customers. Customer relationship management (CRM) is the overall process of exploiting customerrelated information and using it to enhance the revenue flow from an existing customer. As part of implementing CRM, airlines use their frequent flyer data to get a better understanding of their customer types and behavior. Data mining techniques are used to extract important customer information from available databases. This study is aimed at testing the application of data mining techniques to support CRM activities at Ethiopian Airlines. The subject of this case study is Ethiopian Airlines’ frequent flyer program’s database, which contains individual flight activity and demographic information of more than 22,000 program members. The data mining process was divided into three major phases. During the first phase, data was collected from different sources, since the frequent flyer database lacked revenue data, which was essential for the study’s goal of identifying profitable customer segments. The data preparation phase was next, where a procedure was developed to compute and fill-in for ix missing revenue values. Moreover, data integration and transformation activities were performed. In the third phase, which is model building and evaluation, K-means clustering algorithm was used to segment individual customer records into clusters with similar behaviors. Different parameters were used to run the clustering algorithm before arriving at customer segments that made business sense to domain experts. Next, decision tree classification techniques were employed to generate rules that could be used to assign new customer records to the segments. The results from this study were encouraging, which strengthened the belief that applying data mining techniques could indeed support CRM activities at Ethiopian Airlines. In the future, more segmentation studies using demographic information and employing other clustering algorithms could yield better results.
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    Premarital Sexual Practice and Perception of Sexual and Reproductive Health Risks Associated With It Among in-School Youths In Shoa Robit Town, North Shoa Zone, Amhara Region, Ethiopia
    (Addis Ababa University, 2014-06) Tadesse Nigussie; Mengistu Daniel
    Introduction: More than one billion people in the world are between the ages of 15 and 24, andmost live in developing countries. Unsafe sex is a major threat to the health and survival ofmillions of adolescents. Each year, one in 20 adolescents worldwide contracts an STI includingHIV/AIDS. Objectives: to assess premarital sexual practices and perception of sexual and reproductivehealth risks associated with it among in-school youths of Shoa Robit town, North Shoa Zone,Amhara National Regional state, Ethiopia Method of the study: An Institution based cross-sectional study design including bothquantitative and qualitative surveys was used. To determine number of students to be included inthe study, a single population proportion formula was used based on the assumption of 19%prevalence (p) in school youth premarital sex by using design effect 1.5 and at 95% confidenceinterval with marginal error of 4%, and finally the sample size would be 540. Result: Of the calculated sample size, total of 508 respondents completely filled to thequestionnaire in the study with response rate of 94.1%. Among a total participants 274(53.9%)were females and 234 (46.1%) were males. Among the study subjects, 224 (44.1%) of themreported that they had premarital sexual intercourse at the time of the survey, of which 106(47.3%) for males and 118(52.7%) for females. The mean age of sexual intercourse was 17.5±1.5 years for males and 16.8± 1.4 years for females. Youths who come from urban were morelikely experience sex than youths from rural (AOR=3.432; 95%CI=1.971, 5.965). Youths whodrink alcohol, smoke cigarette, chew chat and watch pornographic films were more likelyexperience sex than who did not (AOR= 2.538; 95%CI=( (1.378-4.674), (AOR= 6.715;95%CI=1.422,31.711), ( AOR= 5.946; 95%CI=0.998, 35.445) and (AOR= 5.119; 95%CI=2.983,8.784) respectively. Conclusion and recommendation: In general, from this particular study, we can conclude thatthe level of sexual and reproductive health risk perception towards STI including HIV/AIDS,among in school youths is generally minimal. Consequently, risky sexual practices are widelyprevalent. School based information, education and behavioral change communication intervention including life skill training should be given