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您的检索式：作者名="Worku Alemu"
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| 1 | Identification of system vulnerabilities in the Ethiopian electric power system显示文摘The Ethiopian Electric Power(EEP) has been operating and managing the national interconnected power system with dispersed and geographically isolated generators, a complex transmission system and loads. In recent years, with an increasing load demand due to rural electrification and industrialization, the Ethiopian power system has faced more frequent, widely spread and long lasting blackouts. To slash the occurrence of such incidents, identifying the system vulnerabilities is the first step in this direction. In this paper, the vulnerability assessment is performed using indices called active power performance index(PIp) and voltage performance index(PIv). These indices provide a direct means of comparing the relative severity of the different line outages on the system loads and voltage profiles. Accordingly, it is found that the most severe line outages are those lines that interconnect the high load centered(Addis Ababa and Central regions) with the rest of the regional power systems. In addition, the most vulnerable buses of the network in respect of voltage limit violations are mainly found at the high load centers. | Moges Alemu Tikuneh Getachew Biru Worku | 2018 | Global Energy Interconnection2018，1，3： | 2 |
| 2 | On-farm Evaluation and Demonstration of Different Feeding Treatment for Beef Cattle Fattening in Adami Tulu Jidokombolcha District, East Shoa Zone显示文摘Evaluation and demonstration study was conducted at Kemo-Gerbi kebele of Adami Tulu Jidokombolcha district on two to three year old Borana bulls with the objectives of evaluation and demonstration of bulls fattening technologies at on-farm level.One farmer’s research extension group(FREG)was formed for fattening the bulls.Twenty bulls were purchased from Borana zone by farmers for the fattening trials.Two feeding treatments(T1=crushed maize grain(20%)+wheat bran(45%)+35%Noug cake and T2=wheat bran(65%)+cotton seed cake(35%))were evaluated at on-farm.Eight hour grazing was common for both treatments.The animals were randomly assigned for dietary rations and data on live weight change of the animals were taken using weight chart tape(developed by JICA project).Finishing weights,total weight gain and daily weight gain of the bulls were not different(P>0.05)between the treatments.Bulls fed on treatment one attained an average daily weight gain of 0.83 kg per bull;while bulls fed on treatment two gained 0.76 kg per bull per day.Total gross margin of treatment one(53,154.5 ETB)was higher than treatment two(49,467.75 ETB).Cost-benefit analysis showed that feeding option number one(T1)is more profitable than feeding option number two(T2).However,fatteners can use any of the feeding options depending on availability of the ingredients in their area. | Aman Gudeto Tesfaye Alemu T. Ashebir Worku Frehiwot Mesele Genet Dadi Mieso Guru | 2020 | NASS Journal of Agricultural Sciences2020，2，1： | 0 |
| 3 | Case Study of Service Oriented Enterprise Architecture Framework显示文摘 | Nassir Dino Awel Dico Dida Midekso Worku Alemu | 2012 | Computer Technology and Application2012，3，3： | 0 |
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