Flexible or asphalt concrete pavement is the paving system most widely adopted all over the world. It has been recognized that there are many different types of factors affecting the performance and durability of asphalt concrete pavement, including the service conditions, such as: variation of...
According to the European Union reports (2014) and WHO (2009), 1.3 million people lose their lives every year from road traffic accidents (RTAs).rnAlthough road traffic accidents (RTAs) are a major global public health problem, most of it occurs in low- and middle-income countries including...
Paved roads in tropical and sub tropical climates often detoriorate in different ways than those in temperate regions because of: harsh climatic condions, lack of proper design and quality control, high load, and inadequate assessment in identifying the causes of distresses before carring out...
Enset /Ensete ventricosum [Welw.] Cheesman/ is exploited as a food crop in Ethiopia where it represents an important staple food. The plant is harvested and large amounts of biomass residues are originated, mainly from the pseudo stem (i.e., fiber bundles obtained from the leaf sheaths after being...
Since the beginning of the twenty centuries molasses have been one of the major leading raw materials for yeast production. However molasses contains substances that inhibit the micro-organisms’ growth and can lead to difficulties in yeast production processes. To overcome this problem, this...
With the rapid growth of electrical power consumption, the expansion and complexity of power transmission and distribution networks also increase, this expansion leads to frequently changes in loading conditions to operate on overloaded or to operate with under loaded conditions. Electricity...
This thesis deals with the detailed design and simulation of hybrid distributed generation system model of solar/wind and fuel cell in Matlab Simulink, and the power generated from these combined three renewable energy sources serves as a small scale alternative source of electrical energy for four...
Load forecasting is the prediction of demand for the future period and is an essential requirementrnfor planning and expansion of power systems. In this thesis, load forecast for Addis AbabarnRegion Transmission System is obtained for the period of 2018 to 2022 and transmission systemrnexpansion...
An important issue in today’s power system is the need to analyze and determine the adequacy of transmission capacity. There is a need for approaches to increase transmission system capacity without construction of new transmission facilities, all while assuring secure operation of the grid....
The PCB is a mechanical base used for interconnection of electronic components. In PCB manufacturing industry, the quality and reliability of circuits is highly dependent upon the accuracy of the manufacturing processes. Because of the different factors affecting the processes to function...
The implementation of neural systems is presented in this paper. The thesis focuses onrnimplementations where the algorithms and their physical support are tightly coupled. This thesisrndescribes a neural network intelligent, application, soft-algorithm to implement to hardwarernelectronics device....
Supply chain performance measure has a vital role in the improvement of the organization’s overall performance. As a result, different measurement factors were employed and performance frameworks have been changed rapidly due to the effect of today’s competitive global market over a...
This paper aims to explore whether inbound logistics improvement in the supply chain fosters an improvement of upstream supply chain integration. An explorative research design is implemented; correlation analysis is used to identify linear relationships between dependent and independent variables....
In the 21st century, promoting safety and health in workplaces is one of the major aspects of human being receiving a considerable attention of researchers, scholars, government and NGOs, and organizations. Accidents in workplaces of all industrial sectors cause injuries and illnesses on employees...
The study was aimed at evaluating and improving the supply chain distribution of lubricants in general, and Total Ethiopian Share Company in particular in a qualitative and quantitative survey. The research has identified the challenges facing the supply chain and analyzed the extent to which the...
The success factor for a manufacturing firm depends on awareness and management of its productivity level that results from measurement. This study focuses on labor productivity measurement and improvement using the Ethiopian Medium and Large Footwear Industry (EMLFI) as a case. The objectives of...
Water supply distribution network components needs to design carefully because of cost involved andrnits life time required to serve. However, in many of the developing countries, like ours the hydraulicrnand physical performance of water distribution network is inadequate to meet...
This study mainly describes the different dam failure modes which can affect the downstream societies and property in the world wide and was aimed to analyze the over topping and piping mode of dam failures for the Mhtsab Azmati embankment dam due to their highly occurrence from the others. The...
Water resources are substantially affected by LULC and climate change. It was crucial to assess the impact of past LULC and future climate change on water resource. However, conflicting results on the effect of the LULC and climate change on runoff volume have been reported for Anger sub-basin...
The Abay basin is one of the Ethiopian basins endowed with abundant surface water and groundwater resources that require proper management and have to be wisely utilized in a sustainable manner. Didessa River is one of the tributary of Abay basin. Evaluating the seasonal variation of this river...