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Amman, Jordan

The University of Jordan , often abbreviated UJ, is a state-supported university located in Amman, Jordan. Founded in 1962, it is the largest and oldest institution of higher education in Jordan.The university has the highest admission averages in the country and is considered the premier university in Jordan and one of the most prestigious in the Arab world. It is located in the Jubaiha area of the University District in Amman. The university currently employs about 1400 faculty staff and has more than 37,000 enrolled students. Wikipedia.


Al-Refaie A.,University of Jordan
Safety Science | Year: 2013

This research examines effects of organizational, safety management, and work group level factors on safety self-efficacy, safety awareness, and safety behavior in Jordanian companies. A total of 324 surveys are collected. Structural equation modeling is then used for data analysis. Results reveal that management commitment, interrelationships harmony, continual improvement and employee empowerment significantly affect safety performance. However, blame culture obstacles spreading safety behavior through safety reporting system or reward system. For large-sized companies, top management, interrelationships, continual improvement, blameless culture, and employee empowerment significantly affect safety awareness and safety behavior. Still, top management should implement effective safety activities and management practices to enhance safety self-efficacy and safety behavior, respectively. For medium-sized companies, it is concluded that top management, as well as interrelationships, continual improvement, and empowered employees do not enhance a safety behavior. Thus, continual improvement and blameless culture should be well-established in safety management system to significantly affect safety behavior. In conclusions, the results of this research provide a valuable feedback to decision makers about the effectiveness of safety performance in Jordanian companies. © 2013 Elsevier Ltd. Source


Azzeh M.,University of Jordan
Empirical Software Engineering | Year: 2012

Variants of adaptation techniques have been proposed in previous studies to improve the performance of analogy-based effort estimation. The results of these studies are often contradictory and cannot simply be generalized because there are many uncontrollable source of variations between adaptation studies. The study presented in this paper has been carried out in order to replicate the assessment and comparison of different adaptation techniques utilised in analogy-based software effort prediction. Empirical evaluation of variants of adaptation techniques with Jack-knifing procedure have been carried out. Seven datasets come from PROMISE data repository were used for benchmarking. The results are also investigated within the presence/absence of feature subset selection algorithm. The current study permitted us to discover that linear adjustment approaches are more accurate than nonlinear adjustment because of the nature of the employed datasets that have, in most cases, normality characteristics. © 2011 Springer Science+Business Media, LLC. Source


Al-Refaie A.,University of Jordan
IIE Transactions (Institute of Industrial Engineers) | Year: 2012

An efficient optimization procedure is proposed for improving a product/process performance with multiple responses using two Data Envelopment Analysis (DEA) techniques, including the cross-evaluation and aggressive formulation techniques. The experiments generated in a Taguchi orthogonal array are considered Decision-Making Units (DMUs). The multiple responses are set inputs and/or outputs for all DMUs. Cross-evaluation and aggressive formulation techniques are employed to measure a DMUs performance. The efficiency scores are then adopted to identify the combination of process factor levels that optimizes a product/process performance with multiple responses. Finally, the proposed procedure is illustrated by three case studies previously reported in the literature. The computational results show that the aggressive formulation technique is the most efficient in optimizing performance compared with the cross-efficiency technique, principal components analysis, and genetic algorithm methods. In conclusion, the advantages of the proposed optimization procedure may motivate practitioners to implement it in order to optimize a product/process with multiple responses in a wide range manufacturing applications. © 2012 Copyright Taylor and Francis Group, LLC. Source


Abusaleem K.,University of Jordan
Nuclear Data Sheets | Year: 2014

The evaluated spectroscopic data are presented for known nuclides of mass 228 (Ac, At, Fr, Np, Pa, Pu, Ra, Rn, Th, and U). Excited states in 228At, 228Rn, 228Fr, 228Np, and 228Pu have not been identified as yet. Significant amounts of new data have been added since the last evaluation of A=228 nuclides. This work supersedes earlier full evaluations of A=228 published by 1997Ar08. © 2014 Published by Elsevier Inc. Source


We have recently developed methods for obtaining exact two-point resistance of the complete graph minus N edges. We use these methods to obtain closed formulas of certain trigonometrical sums that arise in connection with one-dimensional lattice, in proving Scott's conjecture on permanent of Cauchy matrix, and in the perturbative chiral Potts model. The generalized trigonometrical sums of the chiral Potts model are shown to satisfy recursion formulas that are transparent and direct, and differ from those of Gervois and Mehta. By making a change of variables in these recursion formulas, the dimension of the space of conformal blocks of S U (2) and S O (3) WZW models may be computed recursively. Our methods are then extended to compute the corner-to-corner resistance, and the Kirchhoff index of the first non-trivial two-dimensional resistor network, 2 × N. Finally, we obtain new closed formulas for variant of trigonometrical sums, some of which appear in connection with number theory. © 2013 Elsevier Inc. Source

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