University of Jordan

About: University of Jordan is a education organization based out in Amman, Jordan. It is known for research contribution in the topics: Population & Medicine. The organization has 7796 authors who have published 13764 publications receiving 213526 citations.

An approximate solution of a fractional order differential equation model of human T-cell lymphotropic virus I (HTLV-I) infection of CD4+ T-cells

Abstract: In this paper, a fractional order differential system for modeling human T-cell lymphotropic virus I (HTLV-I) infection of CD4^+ T-cells is studied and its approximate solution is presented using a multi-step generalized differential transform method. The method is only a simple modification of the generalized differential transform method, in which it is treated as an algorithm in a sequence of small intervals (i.e. time step) for finding accurate approximate solutions to the corresponding systems. The solutions obtained are also presented graphically.

Esophageal foreign bodies

Abstract: Objective: A retrospective review was performed on 180 patients from 1975 to 1997 to evaluate the diagnosis, and management of esophageal foreign bodies. Methods: All patients except two were symptomatic and 145 of them were younger than 14 years of age. Plain films were performed in every patient with a suspected esophageal foreign body (EFB). In all patients, rigid esophagoscopy was done under general anesthesia once the diagnosis of impacted EFB is made. Results: Fifty-five percent of the foreign bodies were coins. In children, the majority of impacted esophageal foreign bodies were located at the level of the cricopharyngeus muscle while in adults the site of impaction was the lower esophageal sphincter. The most common symptoms were vomiting and or regurgitation. Of the 180 EFBs encountered, 169 were extracted endoscopically, five were pushed into the stomach, five were not found, and one patient needed cervicotomy. There were no deaths in this series. Predisposing factors were found in 15 patients. Fifteen patients (8.3%) had benign strictures. In ten patients (5.5%), minor complications were encountered, none of which were esophagoscopically related. Alternative diagnostic and therapeutic modalities are discussed. Conclusions: All patients with a history of suspected foreign body ingestion should have direct endoscopic examination. If the EFB is not detected a thorough radiographic examination, including CT scan, should be performed to detect a possible intra- or extraluminal object. Preservation of the airway is regarded to be the most important consideration in esophageal foreign body management.

Knowledge Sharing Capability: A Literature Review

Abstract: This paper is concerned with providing a deep theoretical analysis for the fields of knowledge sharing enablers and knowledge sharing capability. A historical overview of knowledge management is addressed at the beginning to provide the reader with an initial understanding of the concept. Then, knowledge sharing enablers as well as knowledge sharing capability concepts are reviewed. Also, the links among knowledge sharing enablers, knowledge sharing capability, and firm performance are discussed through theoretical and empirical studies. This study will be useful for both academia and practitioners as to fill the gap of the incomplete causal chains between knowledge sharing and knowledge sharing capability.

Self-identification with a heritage tourism site, visitors’ engagement and destination loyalty: the mediating effects of overall satisfaction

Abstract: This study assesses a conceptual model that postulates relationships between self-identification with a heritage site, engagement at the site, overall satisfaction and destination loyalty. ...