ABSTRACT This study has found the relationship between performance management, productivity and efficiency at SAFAT Aviation Group. It has achieved the objectives. The research questions have developed. hypotheses were developed also for the study. Historical data was reviewed, survey and interview have used as main tools for data collection of primary data. Respondents have selected using simple random sampling technique. The responses were entered and analyzed by using SPSS v11. The findin...
Abstract aerospace is one of the most developed science all over the world and it is not exclusive to the developed countries. In a country like Sudan with extended boundaries, huge internal resources never profiteered from this technology. There are numerous security problems represent some challenges. The main objective of this study is to design a small microsatellite structure to solve and control those types of problems. Microsatellite structure was modelled using SOLIDWORKS then the st...
ABSTRACT The performance of diesel engines is heavily influenced by their injection system design. In fact, the most notable advances achieved in diesel engines resulted directly from superior fuel injection system designs. While the main purpose of the system is to deliver fuel to the cylinders of a diesel engine, it is how that fuel is delivered that makes the difference in engine performance, emissions, and noise characteristics. The objective of the present work is to evaluate performanc...
TABLE OF CONTENTS DECLARATION OF ORIGINALITY CERTIFICATION lll IV DEDICATION .................................................................................................................... V ACKNOWLEDGEMENT Vi ABSTRACT ...................................................................................................................... Vll LIST OF FIGURES LIST OF ABBREVATJONS CHAPTER ONE 1.0 INTRODUCTION XI Xll 1 1.1 BACKGROUND OF THE PROJECT ................................................
Abstract The pumps work differently in terms of performance characteristics when operated in reverse mode to generate mechanical rotational energy driven by the water energy. The performance characteristics related to head, flow rate, specific speed and efficiency have been predicted differently from available conversion methods. Also, the procedure of selecting pump as hydro-turbine varies from different conversion methods. This article presents the methodological approach of evaluating th...
ABSTRACT Wireless indoor positioning systems have become very popular in recent years. These systems have been successfully used in many applications such as asset tracking and inventory management. Although satellite-based Global Positioning Systems (GPS) and Cellular Networks (CNs) have empowered a variety of location based services but they do not work well in indoor environments where walls and excessive multipath objects greatly attenuate satellite and cellular signals. In most cases, t...
ABSTRACT Load forecasting is an important component for power system energy management system. Precise load forecasting helps the electric utility to make unit commitment decisions, reduces spinning reserve capacity and schedule device maintenance plan properly. It also reduces the generation cost and increases reliability of power systems. In this work, a fuzzy logic approach for short term load forecasting is attempted. Time, temperature and similar previous day load are used as the indepe...
ABSTRACT In Multiple Input Multiple Output (MIMO) Radar every antenna element transmits different waveforms, these waveform diversity enhanced MIMO Radar system dramatically. Coherent MIMO radar array elements are close enough so that every element sees the same target radar cross section (RCS). The target response is mainly interrupted by the unwanted signals (Noise, Clutter, and Jamming) associated with receiving signal that degrades Probability of detection as well as performance of MIMO r...
Abstract: Several new techniques are developed within the previous couple of years that convalesce results on special filters by take away the noise additional with success whereas protective the sides within the information .Image de-noising plays an important role in satellite communication and signal processing applications. In this research , I suggest an median filter ,NLmeansfilter ,Total Variation (TV) ,Hybrid Median Filtering (hmedian), Speckle Reducing Anisotropic Diffusion Filterin...
Abstract Most variable speed wind turbines have pitch angle control mechanisms and one of their objectives is to extract maximum power from available wind speed, by adjusting pitch angles of wind turbine. In this research, the use of pitch angle control using PI controller is presented for wind turbines equipped for a three turbines with self-exited induction generators (SEIGs). The converters are used to extract the maximum available power from the wind. All machines are connected to a dc b...
Abstract The manufacture of plastic bags (HDPE, LDPE, LLDPE) is one of the leading industries in the world and has a strong consumer demand for packaging and packaging. The research examined the design of the film machine by analyzing the model of the bag blowing machine. Since the emergence of the rough and the formation of the balloon focus on the cooling area when the formation of the balloon and to make the roll to be ready for the stage of cutting (finished product). And compared this a...
Abstract The Vierendeel girder definition is open-frame N-truss without diagonal members, with rigid joints between the top and bottom chords and the verticals are known also as open-frame girder, this research is conducted to study the structural performance of different Vierendeel frame. Three models of the Vierendeel (1, 2& 3) were studied for their structural performance using approximate method and structural analysis programs such as SAP2000 and ROBOT STRUCTURAL for different loadings ...
ABSTRACT Cavitation is the appearance of vapor cavities inside an initially homogeneous liquid medium, occurs in very different situations. According to the flow configuration and the physical properties of the liquid, cavitation is the most commonly required one in all the researches on the pumps and flow systems but they are too hard to manipulate with the primary methods. In this research was study the effects of rotational speed (rpm); flow rate (Q); fluid temperature (T) and pressure (P...
Abstract This research presents the results of numerical study of heat transfer and pressure drop behavior in a compact heat exchanger (CHE) designed with drop-shaped pin fins. The heat exchanger used for thisresearch consists of a rectangular duct fitted with different drop-shaped pin fins dimensions with the same heat transfer wetted surface area.A three dimensional finite volume based numerical model using ANSYS FLUENT 14.5 has been conducted to select the optimum pin fin dimension conside...
Abstract Abrasive Water Jet Machining – (AWJM) become one of popular and growing processes among Advanced Machining Processes. It has high material flexibility and advantages of geometric, and ability to cut materials that are hard to machine using conventional technologies, it reduces the time necessary for secondary operations like programming, tool changing, or clamping. this allows a significant optimization of the overall manufacturing process chain. All these Advantages lead to (AWJM)...