Sirte, Libya
Sirte, Libya

Sirte University is a public university in the city of Sirte, Libya, with a campus also at Hun. It was established as a university in 1991; for the two years before that, it was operated as a branch of Benghazi University.There are thirteen faculties, or schools:Agriculture Faculty1) Department of Soil and Water 2) Department of Plant Production and Plant Protection3) Department of Animal Production 4) Department of Economics and Agricultural Extension5) Department of Food Science Technology 6) Department of Natural Resources7) Department of Agricultural MechanizationArts & Literature FacultyDentistry CollegeEconomics FacultyEconomics Faculty at HounEducation CollegeEducation College at HounEngineering Faculty Mechanical Engineering Petroleum Engineering Electrical Engineering.CollegeInformation Technology FacultyLaw FacultyMedicine FacultyNursing CollegeScience Faculty1) Department of Chemistry2) Department of Mathematics3) Department of Computer Science4) Physics Department5) Department of Animal Science6) Department of Plant science↑ ↑ ↑ ↑ ↑ Wikipedia.

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Algaddafi A.,Sirte University | Elnaddab K.,University of Cardiff
Proceedings of 2016 International Renewable and Sustainable Energy Conference, IRSEC 2016 | Year: 2017

The semiconductor power devices are the main core of all power electronic devices. Therefore, the protection of semiconductor devices and their operation at a safe level are required. Semiconductor power devices, resistors, and capacitors usually have parasitic inductances and capacitances. When a rapid switching transition occurs in the switching devices, it creates a noise, an electromagnetic interference and ringing, on the waveforms. These issues in power switching devices can be resolved by either replacing the switching device with another switch that has rated to exceed the stress or by using a series Resistor-Capacitor (RC) circuit to reduce the stresses to a safe level. The former solution increases the cost, while the snubber circuit, which is a simple RC circuit, is popular and is commonly used for any practical switching circuit, such as power converters, motor drivers, and power electronic devices. Although some works have been addressed in designing the RC snubber circuit, those studies are either based on simple work, or they involve very complex method with results that are often difficult to interpret. In this paper, therefore, we establish how to design an RC snubber circuit experimentally for a buck converter. The buck converter is modelled in PSpice software with and without the RC snubber circuit, where the comparison can be made. The model results show that the current across the switching device is reduced by the RC snubber circuit. In addition, the experimental results validate and verify the effectiveness of the RC circuit and eliminate the ringing and the noises. © 2016 IEEE.


Musbah I.,Sirte University | Ciceron D.,LSPC | Saboni A.,Boulevard Of Luniversite | Alexandrova S.,LaTEP EA1932
Desalination | Year: 2013

This study is focused on the possibility of pesticide and DEA elimination by nanofiltration using NF and OPMN-K membranes. Experiments are carried out on laboratory equipment in batch circulation and applied pressures vary between 10 and 25. bars. Three common pesticides (simazine, atrazine, diuron) and a chlorinated metabolite of atrazine: diethylatrazine is used as solutes, either alone or in complex solutions.For all experiments, NF shows better performance compared to OPMN-K. The most retained pesticide is atrazine and the least retained is diuron due to its higher dipole moment (high carbonyl group contribution) coupled to linear form which may also induce a decrease in its steric retention. In the case of pesticide/DEA mixtures, DEA rejection is better (up to 44%) for all pressures due to the formation of macromolecular complexes. It is also noticed that molecular weight and size, expressed by Stokes radius, are not the only parameters influencing rejection: shape of the molecule (molecular length and width) has a strong influence on rejection. The observed rejection increases when length and width increase.The nanofiltration technology seems to be a good way to treat the problem of pesticide pollution in one step process. © 2012 Elsevier B.V.


Zubi Z.S.,Sirte University | Saad R.A.,University of Tripoli
Recent Researches in Artificial Intelligence, Knowledge Engineering and Data Bases - 10th WSEAS International Conference on Artificial Intelligence, Knowledge Engineering and Data Bases, AIKED'11 | Year: 2011

Lung cancer is a disease of uncontrolled cell growth in tissues of the lung, Lung cancer is one of the most common and deadly diseases in the world. Detection of lung cancer in its early stage is the key of its cure. In general, a measure for early stage lung cancer diagnosis mainly includes those utilizing X-ray chest films, CT, MRI, etc. Medical images mining is a promising area of computational intelligence applied to automatically analyzing patient's records aiming at the discovery of new knowledge potentially useful for medical decision making. Firstly we will use some processes are essential to the task of medical image mining, Data Preprocessing, Feature Extraction and Rule Generation. The methods used in this paper work states, to classify the digital X-ray chest films into two categories: normal and abnormal. The normal state is the one that characterize a healthy patient. The abnormal state including the types of lung cancer; will be used as a common classification method indicating a machine learning method known as neural networks. In addition, we will investigate the use of association rules in the problem of x-ray chest films categorization. The digital x-ray chest films are storied in huge multimedia databases for a medical purpose. This multimedia database provides a great environment to apply some image recognition methods to extract the useful knowledge and then rules from the mentioned database. These rules that we could got using image recognition methods, will help the doctors to decide important decisions on a particular patient state.


Gaidan I.,Sirte University
Key Engineering Materials | Year: 2014

Different ratios of MnO2 / Fe2O3, were used after being fired to form thick film gas sensors. The films were deposited on alumina substrates. The response of the sensors for a concentration range of 2500-5000 ppm increasing by a step size of 500 ppm of propanol at room temperature was investigated. The highest response was with the 75 / 25 MnO 2 / Fe2O3 sensor followed by the 25 / 75 and 50 / 50 MnO2 / Fe2O3 sensors. The repeatability of the 75 / 25 mol. % MnO2/ Fe2O3 to propanol at two concentration ranges 500 -3000 and 2500 - 5000 ppm increasing with a step size of 500 ppm at room temperature was reported. The X-Ray Diffraction (XRD) is used to determine the final composition of the materials after firing. The XRD results show that MnO2 reacts with Fe2O3 to form FeMn2O4with Fe2O3 and Fe 3O4. © (2014) Trans Tech Publications.


Gaidan I.,Sirte University
Key Engineering Materials | Year: 2014

This work deals with the new technique employed in the fabrication of thick film which includes material selection, functional materials, milling / drying / pressing, firing and cooling, binder / solvent, substrate preparation, pastes preparation, the screen printing process and drying the sensing layers. A novel approach to electronic nose-head design, using a copper thin film electrode patterning technique was used to deposit electrodes on the alumina substrate. The responses of the sensors to propanol was investigated. The response / recovery times of all the sensors were improved compared to those deposited on glass substrates. For example, the response time for all the NiO / Fe 2O3 devices at 4000 ppm was less than 10 sec., while the recovery time were 30 sec for both the 75 / 25 and the 50 / 50 mol. % NiO / Fe2O3 sensors and 20 sec for the 75 / 25 % NiO / Fe 2O3 sensor. The response / recovery times of those sensors fabricated on glass substrates were 30 / 45, 45 / 55 and 60 / 85 at the same solvent vapour and concentration. © (2014) Trans Tech Publications.


Gaidan I.,Sirte University
46th International Symposium on Microelectronics, IMAPS 2013 | Year: 2013

It is well known that the gas sensor fabrication condition is affected by various parameters, such as the sensing materials, the amount of additive materials and several fabrication conditions. The goal of study of these parameters is to increase the sensitivity of the measurement system by reducing its variability. It is important that measurement systems provide an accurate and robust performance over a wide range of input conditions. Under these conditions, the system is said to have a robust design. However, the need for cost effective, sensitive and selective gas sensors led to the use of Taguchi methods to select the optimum sensor and its condition. Robust design gives us the tools to minimize the effects of chance and to maximize control of our process or experiments. This work deals with the effect of some factors on the response of the various composition of sensors to propanol. In this study the sensors were deposited on alumina substrates with copper thin film electrodes. The results were confirmed using two statistical methods, namely, analysis of mean (ANOM) and analysis of variances (ANOVA).


Amreiz H.M.,Sirte University
Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS | Year: 2012

Finite element analysis is the most widely used numerical method for transient and steady state solutions of both 2D and 3D electromagnetic problems. It permits accurate modelling of complex geometries with non-linear material properties. © 2012 IEEE.


Amreiz H.M.,Sirte University
Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS | Year: 2012

Transverse flux switched reluctance motors enable the application of a large MMF per pole to a machine with a large number of poles. This paper will investigate the difficulties of building these machines and their advantages and shortcomings. Electrical, magnetic and mechanical difficulties are investigated and ways to overcome these difficulties are fully explained. A novel hybrid construction technique is advocated in which both laminations and powdered iron is used together. The laminations are employed in regions of high saturation where the fields are laminar and the powdered iron in regions where the field is truly three dimensional. A prototype machine has been designed and fully tested and this was reported by the author in a previous paper. Some of complexities in building these machines are not encountered in any other type of machine because of the specific designs employed in these machines. Problems encountered in designing the laminations and the frames are also reported and solutions are found. © 2012 IEEE.


Purpose: Stafford Beer's viable system model (VSM) offers a powerful and alternative model for both economic and social organizations to structure themselves, especially for those operating in highly turbulent environments. Recent advancements in information technology make feasible the implementation of real-time information systems. The purpose of this paper is to describe the author's involvement in designing an information system for Libya's Youth and Sports Ministry, using Beer's VSM. Design/methodology/approach: Systemic methodological ways of gathering the necessary data to build and implement the model, such as Checkland's CATWOE and Espejo's VIPLAN, make it far easier for information systems designers to implement the VSM. Findings: An implementation of the model for Libya's Youth and Sports Ministry was undertaken in 2007. Although the full implementation was never completed, the methodological approach used was effective. Another lesson learnt by the analyst was that before attempting to improve the viability of a system, whether a human resource planning information system for an organization or implementing a viable model for a ministry or state, it is necessary to plan for a scenario where unforeseen and catastrophic changes, whether from external environmental challenges or from internal policy changes, can challenge the survivability of the project itself. Originality/value: Research papers on implementations of the VSM tend to focus on the structure and the philosophical mechanisms in achieving requisite variety, however methods and tools to aid the implementation of the model are very few and not well clarified. This could explain why the late Stafford Beer initially sought the need to publish Diagnosing the System for Organizations in 1985 to simplify the process of implementing his pioneering insights and thoughts. © Emerald Group Publishing Limited.


Zubi Z.S.,Sirte University
WSEAS Transactions on Computers | Year: 2010

The internet is a huge source of documents, containing a massive number of texts in multilingual languages on a wide range of topics. These texts are demonstrating in an electronic documents format hosted on the web. The documents exchanged using special forms in an Electronic Data Interchange (EDI) environment. Using web text mining approaches to mine documents in EDI environment could be new challenging guidelines in web text mining. Applying text-mining approaches to discover knowledge previously unknown patters retrieved from the web documents by using partitioned cluster analysis methods such as k- means methods using Euclidean distance measure algorithm for EDI text document datasets is unique area of research these days. Our experiments utilize the standard K-means algorithm on EDI text documents dataset that most commonly used in electronic interchange and we report some results using text mining clustering application solution called WEKA. This study will provide high quality services to any organization that is willing to use the system.

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