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Now showing items 1396-1415 of 2841

Handling of Aggregates in The Ethiopian Construction Industry: The Case of Addis Ababa

Tekle, Admasu (Addis Ababa University, 2015-11)

Aggregate handling is one of the major tasks in the construction industry. It plays vital roles in the effectiveness and efficiency of the construction industry. Hence, the study investigated the problems of aggregate ...
Handling of Concrete Making Materials in the Ethiopian Construction Industry

Addissie, Denamo (Addis Ababa University, 2005-10)

Construction materials management is an important element in the management of construction projects. One of the construction materials widely used in construction projects is concrete. Concrete being one of the important ...
Handoff Initiation and Performance Analysis in Cdma Cellular Systems

Sori, Negassa (Addis Ababa University, 2007-02)

Mobile terminals allow users to access services while on the move. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology into a massive industry within less ...
Hardware Acceleration of Elliptic Curve Based Cryptographic Algorithms: Design and Simulation

Kedir, Mubarek (Addis Ababa University, 2008-04)

Elliptic curve cryptography (ECC) is an alternative to traditional public key cryptographic systems. Even though, RSA (Rivest-Shamir-Adleman) was the most prominent cryptographic scheme, it is being replaced by ECC in ...
Harmonic Analysis in 25kV AC Railway Electrification system: The case of the proposed Ethiopian Railway System

Henok, Million (AAU, 2014-08-05)

Electrical locomotives generate harmonic currents in railway power-supply system. Which in turn produce continuous distortion of current and voltage waveform in the supply network. This distortion gives adverse effect ...
Harmonic Analysis of Addis Ababa Light Rail Transit Traction Converters

Demissu, Legese (AAU, 2014-08)

Traction power system is the main area of industrial sector where the application of power electronic technology is widely used. The uses of these devices create harmonics that cause a serious problem on the proper ...
Harmonization of Light Rail Transit and Principal Arterial Streets (A Case Study on the Addis Ababa East-West LRT Line and Principal Arterial Streets)

Endeshaw, Yilkal (Addis Ababa University, 2013-10)

The introduction of New Light Rail Transit Systems into a city has proven to bring positive effects on property values and it contributes an important role to the development of a city by taking a greater share of Public ...
Harmonizing Pedestrians Mobility at Level Crossing (The Case of Sebategna Level Crossing in Addis Ababa)

Christine, Nyakona (2019-07)

The highway-rail grade crossing is unique in that it constitutes the intersection of two transportation modes, which differ in both the physical characteristics of their traveled ways and their operations. Level crossings ...
Heat Transfer Analysis During the Process of Injera Baking by Finite Element Method

Getenet, Gashaw (Addis Ababa University, 2011-11)

The main objective of this study was the modeling and simulation of the heat transfer during the process of injera baking. In doing these, mathematical models and finite element formulations for baking pan and injera ...
High Embankment Dam Alternative Design and Analysis (In Case of Middle Awash Multipurpose Dam)

Tadesse, Dagne (2017-03)

Design of an Embankment Dam is a crucial issue from the view point of safety and economy of construction cost. Asphaltic concrete core is virtually impervious, flexible, resistant to erosion and aging, workable and ...
High Performance Automatic Target Recognition

Tadesse, Misiker (Addis Ababa University, 2012-10)

Designing a vision system, which was motivated by that of the human eye, has been done since the introduction of digital computing devices. Due to its abundant applications, this area is a hot topic in the industry. Its ...
High Performance Glove Leather from Goat Skin: Role of Physico-Chemical Properties

Tarekegn, Jida (Addis Ababa University, 2014-09)

The chemical and physical characteristics of the goat skins are essential to make glove leathers. The characteristic of skin can be analyzed by using Scanning Electron Microscope (SEM), light microscope and studying ...
High Throughput Aes Crypto Co-Processor

Tafesse, Kassaye (2013-02)

In 2001, National Institute of Standards and Technology (NIST) approved Rijndael as Advanced Encryption Standard(AES).Since its approval, AES is being used widely in different security applications for its good security, ...
Highway Development and Management Model – 4 (Hdm-4) Calibration (Addis Ababa – Modjo Trunk Road Case)

Syum, Tewodros (Addis Ababa University, 2014-02)

The Highway Development and Management Tools collectively referred to as HDM-4, developed by the World Bank, incorporates various applications. Some of the are: road performance prediction, road treatment programming, ...
Highway Drainage Facilities Problems (Case Study – Assessment of Drainage Problems in Adama)

Elias, Meraf (Addis Ababa University, 2015-12)

Most designs of roads projects have limitations with drainage related issues. Especially, town section drainage design and provision needs a great consideration as the scale of damage due to lack of proper drainage ...
Holistic Multi-Parametric Magnetic Resonance Image Processing for Identification of Neoplasm and normal Brain Tissues

Chernet, Teferi (Addis Ababa University, 2016-12)

Abreakthrough advance in Magnetic Resonance Imaging (MRI) into standard clinical practices has enabled greater accuracy in delineating tumor volumes. The technique allows autonomous detection through noninvasive imaging ...
Horizontal Accuracy Assessment of Digital Aerial Photograph in Urban Cadaster: The Case of Wereda 10, Gulelie Sub-City, Addis Ababa

Azeneg, Eneyew (Addis Ababa University, 2018-10)

Positional accuracy deals with the accuracy of the location of map features, and measures how far a spatial feature on a map is from its true or reference location on the ground. This research focused on the following ...
Horizontal Positional Accuracy Assessment of an Orthopohoto: A case of Addis Ababa City

Sisay, Walelign (Addis Ababa University, 2019-06)

This study tries to examine horizontal positional accuracy of orthophotoof Addis Ababa city using in-situ Global Positioning System (GPS) data. GPS data is processed using different processing systems like spectrum survey, ...
Horizontal Subsurface Constructed Wetland for Removal of Heavy Metals from Leachate Using Phragmites Australis (A Case of Addis Ababa Solid Waste Open Dump)

Bahre, Mesele (Addis Ababa University, 2013-04)

Heavy metals were present at relatively high concentrations in the landfill leachate. The disposal of heavy metals into the environment is of great concern due to their serious effects on food chain and furthermore on ...
How High Could Buildings Made of Ribbed or Flat Slab Construction With out Shear Walls be Built? (Case Study)

Arega, Mohammed (Addis Ababa University, 2006-12)

The main objective of this thesis was to study the stability of slab-column, specifically ribbed slab-column, for high rising building frame systems with out lateral load resisting structural element. The study also tried ...

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