Amman, Jordan

Middle East University is a national education research consulting non-profit organization in Amman, Jordan, owned by the Company Middle East University for Graduate Studies.The university started its first stage on behalf of the University of Graduate Studies as of 30 June 2005, after having completed all the requirements of licensing and accreditation. And received the first batch of students in a dozen specialized master's program at the beginning of Chapter II of the academic year 2005–2006 at the site of the university. With the beginning of the academic year 2008–2009 will receive the university in the second phase of her first batch of undergraduate students in a dozen specialized in the total area of buildings amounted to M². Wikipedia.

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Azar S.M.,Dar Al Uloom University | Mousa A.A.,Middle East University at Amman | Khalifeh J.M.,University of Jordan
Intermetallics | Year: 2017

Density functional theory calculations based on full potential linearized augmented plane-wave (FP-LAPW) plus local orbital method in the framework of GGA-PBE, as embodied in the WIEN2k code, is used to investigate the structural, electronic and magnetic properties of intermetallic Ti1+xFeSb Heusler compounds, where (x=−0.75,−0.50,−0.25,0.0,0.25,0.50,0.75,1.0). Moreover, the Tran-Blaha parameterized of the modified Becke-Johnson (TB-mBJ) exchange potential, as a semi-local method, is employed to predict the bandgap more precisely. The physical characteristic of these systems are found to be mostly determined by the crystal structure and the electron concentration or the number of valence electrons. We examined the site preference of the parent compound TiFeSb and varied the electron concentration by doping or removing a Ti atom and we found that the variation plays a crucial role in the physical properties of these material systems. Alloys with x≤0 are found to exhibit a ferrimagnetic phase, and the alloy with x=0.25 exhibits non-magnetic properties, whereas the rest have shown ferromagnetic phase. The band-structure analysis of Ti1.75FeSb and Ti2FeSb (CuHg2Ti-type) alloys suggested that they could be ferromagnetic half-metallic candidates with bandgaps 0.350 and 0.468 eV, respectively. We found that Ti rich Ti1+xFeSb alloys have high spin polarization. © 2017 Elsevier Ltd

Mousa A.A.,Middle East University at Amman
International Journal of Modern Physics B | Year: 2014

Structural and electronic properties of perovskite KCaX3 (X = F and Cl) compounds are investigated using the full potential linearized augmented plane wave (FP-LAPW) method as implemented in the Wien2k code. The exchange-correlation potential is treated by the generalized gradient approximation within the scheme of Perdew, Burke and Ernzerhof (GGA-PBE). Based on these calculations, it has been concluded that KCaX3 compounds have indirect energy band-gap (Γ-R). Moreover, the theoretical investigation which has been carried out on the highly hydrostatic pressure dependence of the KCaX3 electronic properties revealed a linear relationship between both the hydrostatic pressure and the energy band-gap. In addition, the electronic and bonding properties of the band structure, density of states (DOS) and electron charge density have been calculated and presented. Besides that, the dielectric function, refractive index and extinction coefficient are calculated. The origin of some of the peaks in the optical spectra is discussed in terms of the calculated electronic structure. Finally, the calculated structural properties are found to agree well with the available experimental and theoretical data. © 2014 World Scientific Publishing Company.

Alqaaidi S.K.,Middle East University at Amman
International Journal of Information Technology and Web Engineering | Year: 2013

Search engines save copies of crawled web pages to provide instant search results, saved pages may become old and un-updated as original pages change providing new information and new links, and most of websites don't submit these new changes to search engines so search engines don't depend mainly on websites techniques of submitting changes. Keeping pages fresh and updated in search engine is important for giving real page ranks and for providing real time information. Techniques were invented to improve the page update process by search engine. In this paper the author combines two of good known techniques and implements the new one via experiments that improve better results in different experiment cases. © 2013, IGI Global.

Mahmoud N.T.,University of Jordan | Khalifeh J.M.,University of Jordan | Hamad B.A.,University of Jordan | Mousa A.A.,Middle East University at Amman
Intermetallics | Year: 2013

Density Functional Theory (DFT) calculations are performed using full potential linearized augmented plane wave (FP-LAPW) method to investigate the effect of defects on the electronic and magnetic properties of Co2VSn full Heusler alloy. The formation energies are calculated for antisite, swap and vacancy defects. The Vsn antisite, V, Co and Sn vacancies have relatively low formation energies with high probability to occur. The half metallicity is maintained in all structures with band gaps smaller than that of the perfect alloy except for CoSn, SnCo antisite and Co-Sn swap, which exhibit a metallic behavior. © 2012 Elsevier Ltd. All rights reserved.

Abuarqoub A.,Middle East University at Amman
Proceedings - 2015 European Intelligence and Security Informatics Conference, EISIC 2015 | Year: 2015

One of the most critical properties of a wireless sensor network is the adaptivity to topological changes. Several studies have demonstrated the benefits of using mobile nodes as an effective tool for gathering data from sensor nodes. However, nodes mobility causes steady connectivity disruptions, where the delay between two disruptions is dependent on the node movement speed and direction. In this paper, we introduce an approach, which based on the connection expiry time, to cluster nodes around a moving mobile sink. Sensor nodes joins the mobile sink that offers the longest connectivity time and the lowest communication overhead. When compared to its best rivals in the literature, the proposed approach improves the packet delivery ratio by up to 21%, end-to-end delay by up to 28% and energy consumption by up to 42%. © 2015 IEEE.

Kayed A.,Middle East University at Amman
2013 5th International Conference on Computer Science and Information Technology, CSIT 2013 - Proceedings | Year: 2013

There are various methodologies to evaluate ontologies. One of them is based on the percentage coverage of ontology for domain knowledge i.e. gold samples. This paper demonstrates several experiments to show how we can use this ontological coverage to test the quality of ontology. The main concern here is how to use the coverage measure to accept or reject the quality of ontology. Two domains ontologies for Java and.Net have been chosen. Two ontologies in each domain with five frequencies have been selected. Ten gold definitions have been selected in each domain. The coverage has been computed for each definition. The coverage measure has been normalized by divining it on the number of words in the definitions (definition normalization). The second ontology in both domains has been chosen to be better than the first one by including the first ontology in the second one with more concepts in the second. The percentage coverage measures have been computed for the four ontologies with 50 (10 5 frequencies) cases. Finding the 'good' population between two populations is a well-know statistical problem. Four techniques have been borrowed: 1) Non-parametric statistical method Mann-Whitney-Wilcoxon U (MWW) test, 2) The average (mean analysis) of the coverage, 3) The average differences in coverage, and 4) The percentage of positive differences in coverage between any two ontologies (sign test). Results show that the technique number 4 (sign test) gives significant results among other tests. © 2013 IEEE.

Al-Obaidi N.M.,Middle East University at Amman | Al-Jarrah M.M.,Middle East University at Amman
2016 6th International Conference on Digital Information Processing and Communications, ICDIPC 2016 | Year: 2016

User authentication on mobile devices, smartphones, and tablets have received considerable interest lately due to the increasing dependence on these devices for storing sensitive data. Keystroke dynamics is a biometrics method of authentication that has the advantage of being hardware independent. However, enhancements are needed to make it a viable security solution on mobile devices. This paper presents a statistical median-based classifier model to serve as an anomaly detector in keystroke dynamics authentication on mobile devices. The proposed classifier uses the timing features of keystroke dynamics as well as touch features of mobile devices. Formulation and evaluation of proposed classifier have been influenced by an empirical analysis of a public dataset of keystroke dynamics on Android platform. The classifier considers the distance from the median of a feature element as an indicator of whether it relates to a genuine user or an impostor, based on previous training data of genuine users. The formula for measuring the acceptable distance to the median is derived from the distance between the minimum value of a feature element and its median. The model was evaluated through comparison with previous detectors, using the same dataset, and the results have shown a significant reduction in the equal-error-rate. © 2016 IEEE.

Mubarak A.A.,King Abdulaziz University | Mousa A.A.,Middle East University at Amman
Computational Materials Science | Year: 2012

We present ab initio theoretical study of the structural, electronic and optical properties for fluoroperovskite BaXF 3 (X = Li, Na, K, and Rb) compounds using full potential linearized augmented plane wave method as implemented in Wien2k code. We employed the generalized gradient approximation as exchange-correlation potential. Our calculations show that these compounds have direct energy band-gap (Γ-Γ). The dielectric function, refractive index, extinction coefficient, absorption coefficient, and reflectivity are calculated. All structures in the optical response are shifted toward lower energies as moved from Li to Rb. Our calculated optical properties show considerable anisotropy at low and high energies. © 2012 Elsevier B.V. All rights reserved.

Abu-Doush I.,Yarmouk University | Bany-Mohammed A.,Middle East University at Amman | Ali E.,University of Jordan | Al-Betar M.A.,Universiti Sains Malaysia
Behaviour and Information Technology | Year: 2013

Accessibility of e-government services is a key issue for people with disabilities. E-government services can significantly save lot of their effort and provide them with lot of easy to reach services. Yet, accessibility of e-government websites is still under-explored topic in Jordan. In order to understand the accessibility of e-government websites and its problems, this study evaluates a set of e-government websites using 20 blind and visually impaired volunteers and at the same time conducts a survey on e-government websites developers. The results from e-government websites accessibility evaluation are compared with expert's review. For both the evaluation and the survey we used a set of accessibility guidelines developed by W3C [i.e. Web Content Accessibility Guidelines (WCAG 2.0)], Section 508 of the US Rehabilitation Act Amendments of 1998, and other literature review. In order to evaluate a reasonable number of e-government Web sites, a set of common e-government websites visited by the blind community were identified and a set of specific common tasks to test were defined. The analysis of the research results revealed a serious weakness in understanding, adopting and implementing Web accessibility guidelines throughout nearly all Jordanian e-government websites. Improving awareness, training developers and users, and developing formal guidelines of Web accessibility are needed to enable visually impaired and blind users in accessing e-government Web sites and their services. Further research analysis discusses and identifies key areas in which e-government accessibility can be enhanced. © 2013 Taylor & Francis.

Kayed A.,Middle East University at Amman
2013 1st International Conference and Exhibition on the Applications of Information Technology to Renewable Energy Processes and Systems, IT-DREPS 2013 | Year: 2013

Renewable energy applications nowadays are a critical factor to their success. Making sure that a specific information, service or product from an online provider is reliable and trustworthy may sometimes be a difficult task. The World Wide Web (WWW) is an open environment in which every person is allowed to populate some information. The accuracy or reliability of such information, to some extent, is unknown, and therefore cannot be trusted. In this paper, we argued that using ontologies may form a useful tool to find the best renewable energy provider. The contribution of this paper is to develop ontology concepts for measuring such "goodness". Common and frequent concepts from five popular and trusted online renewable energy providers were extracted, refined, and then checked against nine other online providers. These providers are also judged by experts who are renewable energy specialists. The results discussed in this paper have shown that the proposed approach has achieved high matching score to the experts' judgments. © 2013 IEEE.

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