Research Title: Performance-Weight Trade for Thermal Management Systems of Lithium-Ion Batteries

Author: Mustafa Awwad Al Khawaldeh, Published Year: 2018

JJEE Jordan Journal of Electrical Engineering, Volume 4, Number 4,

Faculty: Engineering and Technology

Abstract: The most important factor limiting the efficiency of Lithium-ion (Li-ion) batteries is their thermal performance. Therefore, the analysis of battery thermal management (BTM) of this type of batteries is of a great interest. This work aims at evaluating the effectiveness of different types of passive and active BTM systems. The electro-thermal behavior of the battery pack is characterized using 3D finite element method (FEM) modeling. The heat generation rate of battery cells during utilization is determined, so that the thermal behavior of the battery pack can be evaluated. The different BTM solutions are evaluated to determine the improvements in the pack thermal behavior. For further improvements, a new mixture of phase-change materials (PCM) is proposed and simulated. The mixture contains 75% of hydrogel and 25% of paraffin wax (PW). The results show that the mixture enables reducing the weight of the BTM material while slightly reducing performance. The end result is reducing the operating cost of the system especially for aerospace applications due to the reduced weight, which is the most important factor. In addition, cooling can be enhanced by the wind.

Keywords: Hydrogel, Li-ion battery, PCM, paraffin wax, thermal management, weight reduction.

Research Title: Mechatronics Engineers’ Perception of Code Mixing: Philadelphia University and Hashemite University as a Case Study

Author: Mustafa Awwad Al Khawaldeh, Published Year: 2016

International Journal of Applied Linguistics and English Literature, 5

Faculty: Engineering and Technology

Abstract: It has recently been widely recognized that code-switching is prevalent in Jordanians' daily conversation in various situations such as home, cafés, universities, restaurants and clubs. Abalhassan and Alshalawi (2000: 183) made a very related observation on code switching behavior among Arab speakers of English that “without exception, all respondents switched into English to some degree”. This could be referred to the increase number of technological advances and people travelling across countries for pleasure or for pursuing further education. In light of this observation, the crucial role of language in people's life, ambivalent attitudes towards code-switching (Akbar, 2007), the dearth of research in this area, such a present study is required to explore Jordanian university students’ and instructors’ perceptions of code-switching in their daily classroom conversation and its expected impact on their language proficiency. In particular, it investigates the factors leading them to code mix and their underlying attitudes towards its expected future impact on their language proficiency. To the best knowledge of the present researcher, this study is the first of its kind in Jordan. Data was collected via semi-structured interviews and a questionnaire from 70 university students and 30 instructors from both Philadelphia University and the Hashemite University. Data revealed that code mixing between English and Arabic is a common phenomenon in lectures they have attended in their academic institutions. The participants also show that they find code mixing fascinating and believe that though code switching might have a positive impact on their learning as it helps them better understand the topic. The instructors revealed that code mixing fulfill a set of functions that serve the educational process.

Keywords: Arabic-English codeswitching, language attitude, bilingualism, language proficiency

Research Title: Hydrodynamics of Cerebrospinal Fluid and Drug delivery in a model of the Human Ventricular system

Author: Shatha Ammourah, Published Year: 2004

ODE, 4

Faculty: Engineering and Technology

Abstract: Hydrodynamics of Cerebrospinal Fluid and Drug delivery in a model of the Human Ventricular system had been studied numerically.

Keywords: CSF, CFD, velocity vectors, drug

Research Title: A 2-D simulation of hydrocephalus in the Foramens of Monro of the human ventricular system

Author: Shatha Ammourah, Published Year: 2004

The12th CFD conference, Canada

Faculty: Engineering and Technology

Abstract: NA

Keywords: Foramens of Monro , 2-D simulation of hydrocephalus

Research Title: Cerebrospinal Fluid Mapping Within a Simplified Ventricular System Using PIV

Author: Shatha Ammourah, Published Year: 2005

. Proceedings of the 5th Pacific Symposium on Flow Visualisation and Image Processing, Australia

Faculty: Engineering and Technology

Abstract: PIV hasd been used to study CSF flow in a simplified CNS model

Keywords: PIV, CSF

Research Title: A CFD Simulation of Cerebrospinal Fluid Pulsatile Motion and Drug Delivery in the Human Ventricular System

Author: Shatha Ammourah, Published Year: 2013

,

Faculty: Engineering and Technology

Abstract: Cerebrospinal fluid (CSF) is a biological fluid contained in the ventricular system inside the human brain and plays a major role in there also in drug delivery inside the brain. The present work investigates the capability of Computational Fluid Dynamics (CFD) in modelling CSF pulsation as direct response to the cardiac cycle and modelling drugs delivery inside CSF according to characteristics of pulsatile flow. To produce CSF pulsatile motion, real brain pressure profile form a healthy volunteer was utilized and imposed on the lateral ventricles of the ventricular system. The study has been performed on a 2D plane of the real ventricular system geometry taken from Magnatic Resonance Imaging (MRI) of a healthy volunteer. CSF recirculation motion was observed at different time fractions all over the ventricular system. In modelling drug delivery inside CSF, Volume of Fluid (VOF) approach has been used where five possible locations of drug entrance to CSF are modelled and studied. It is found that the admitted drug follows CSF path way and dynamics. Possible areas of Nero-toxicity are found to be at locations of very slow motion, where the drug is entrapped and circulates with CSF. The results of this study indicate that this computational approach can be used by brain surgeons to design their drug pharmacokinetics and the admission point, and be very useful to reach their goal of treatment.

Keywords: Cerebrospinal Fluid, brain pulsation, CSF flow pattern, Human ventricular system, recirculation motion, pressure profile, drug delivery, CFD numerical solution.

Research Title: Measuring the Impact of Business Risks on the Quality of the Auditing Process

Author: Ali Ahmad Masadeh, Published Year: 2015

Review of Integrative Business and Economics Research, 4

Faculty: Business

Abstract: This study aimed to measure the impact of business risk on the quality of the auditing process, from the perspective of auditors and the audit staff in the licensed operating offices to peruse the profession in the Jordan By distributing a questionnaire to them, they are (82) licensed office allowed to practicing the profession work out to about (325) auditor. And the researchers came up with a number of findings among which the most important ones are: That there is an evidence for the regulatory risks, environmental risks and occupational risks on the quality of the audit process from the perspective of the auditor. In the light of these findings, there are some recommendations. There should be work to increase interest of administrations of offices of systematic risks as they affect the quality of the audit process, There should be work to increase the attention of administrations of offices of audit of environmental risks through the study and analysis of the environmental performance of the company in order to ensure its ability to respond to the current laws on the protection of the environment. And there should be work to increase the interest of administrations of offices of audit of occupational risk with a need to analyze all the risks associated with the activities of the organization ,and having examined the risks associated with each activity.

Keywords: Business Risks, external auditors, quality of auditor's process

Research Title: Fully developed thermal behaviors for parallel flow microchannel heat exchanger

Author: Shatha Ammourah, Published Year: 2009

International Communications in Heat and Mass Transfer, 36

Faculty: Engineering and Technology

Abstract: The hydrodynamics and thermal behaviors of the flow in micro-heat exchanger parallel-plate are investigated numerically. Themodel that combines both the continuumapproach and the possibility of slip at the boundary is adopted in the study. Effects of different parameters, such as, Knudsen number (Kn), heat capacity ratio (Cr), the effectiveness (e) and number of transfer units (NTU) are investigated. It is found that both the velocity slip and the temperature jump at the walls increase with increasing Kn. On the other hand, at low values of Kn, the NTU increases with increasing Cr, but at high values of Kn the NTU decreases with increasing Cr. With regard to the effect of Cr on e, it is found that increasing Cr leads to a reduction in e and for all Kn.

Keywords: heat exchanger, Kn, heat ratio NTU

Research Title: Enhancement of natural convection heat transfer from a fin by rectangular perforations with aspect ratio of two

Author: Shatha Ammourah, Published Year: 2009

International Journal of Physical Sciences, 4

Faculty: Engineering and Technology

Abstract: In this study, the enhancement of natural convection heat transfer from a horizontal rectangular fin embedded with rectangular perforations of aspect ratio of two has been examined using finite element technique. The results for perforated fin have been compared with its equivalent solid one. A parametric study for geometrical dimensions and thermal properties of the fin and the perforations was carried out. The study investigated the gain in fin area and of heat transfer coefficients due to perforations. It was found that, for certain range of rectangular dimension and spaces between perforations, there is an augmentation in heat dissipation and a reduction in weight over that of the equivalent solid one. Also, the heat transfer enhancement of the perforated fin increases as the fin thickness and thermal conductivity increase.

Keywords: Finite element, perforated fin, heat dissipation, heat transfer augmentation, natural convection,

Research Title: THE USE OF ACCOUNTING AND FINANCIAL RATIOS TO PREDICT FAILURE: THE CASE OF JORDAN

Author: Ali Ahmad Masadeh, Published Year: 2019

Academy of Accounting and Financial Studies Journal, 23

Faculty: Business

Abstract: The study aimed to use the financial performance of Jordanian companies in order to predict financial failure. To achieve this, financial ratios were applied. Data was collected from selected companies through an analysis of relevant documents as well as through interviews with senior management in industrial companies operating in Jordan. The findings indicate that there are essentially four ratios that could explain and predict financial performance of a company in the Jordanian setting; these are a ratio of current assets to total assets, a ratio of debtors to sales, a ratio of net profit before interest and tax to current liabilities, and a ratio of the market value of capital-to-book value of the total debt, the latter of which appears to be the most important ratio. Following this, a model comprising three financial ratios that are deemed the strongest influence, based on their statistical significance, was constructed, and this model was used to rerate a sample of successful and failed food companies. The constructed model was able to distinguish between successful and failed companies, as follows: D1=0.416*X25-0.001*X21+0.004*X19-1.943 D2=-1.720*X25+0.028*X21+0.459*X19-11.183 Thus, the paper’s contribution is the constructed model that could be employed by potential investors and other stakeholders in order to predict failure

Keywords: Financial Performance, Solvency, Bankruptcy, Criteria, Testing, Ranking