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

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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

Research Title: hydrodynamics behavior of a fluid flow in micri-venturi

Author: Shatha Ammourah, Published Year: 2012

Faculty: Engineering and Technology

Abstract: Hydrodynamic behaviour of a fluid flow in micro-venturi is investigated numerically taking into account the effect of the Knudsen number (Kn), diameter ratio (b), and Reynolds number (Re). It is found that the velocity jump in the throat of the venturi increases with increasing Re. The axial velocity takes its maximum values at the narrowest section, and these values increase with decreasing Kn. Also, it is found that the dimensionless pressure distribution and the net pressure loss increase as Kn decreases while pressure attains its maximum values at the entrance section. On the other hand, it is observed that increasing Kn and decreasing b cause the discharge coefficient to decrease.

Keywords: micro-venturi, knudsen number, diameter ratio, velocity jump.

Research Title: The Effect of Activity-Based Costing on Companies Financial Performance: A Study among Jordanian Industrial Shareholding Companies

Author: Ali Ahmad Masadeh, Published Year: 2015

European Journal of Business and Management, 5

Faculty: Business

Abstract: The costs play important role in the growth of corporations’ especially industrial sector. In the low-income country like Jordan, the article aims to analyze the effect of adopting Activity Based Costing (ABC) on the financial performance of Jordanian industrial shareholding companies. The population of this study consists of (13) public shareholding industrial companies in Jordan out of (70) from the period of 2000-2014. Four years average before and after applying ABC system is taken for all variables and significance is tested with the help of paired sample t-test statistics. Dependent variable in this study is the implementing of ABC system, and independent variables are gross profit margin (GPM), margin before interest and tax ratio (MBIT), net profit margin ratio (ROS), return on assets (ROA), return on equity (ROE) and return on investment ratio (ROI) have been computed. The results show that 78 Performance variables shows that the direction for the improved ratios after implementing ABC system is 37 Performance variables (37/78, 47%), and remaining 41 (41/78, 53%) Performance variables direction shows deterioration in the after implementing ABC system period. Out of 37 improved ratios 4 Performance variables are statistically significant. In the other hand out of 41 deteriorated ratios 7 Performance variables are statistically significant.

Keywords: Activity Based Costing (ABC), financial performance, industrial companies, Jordan

Research Title: Flow characteristics of micro orfice

Author: Shatha Ammourah, Published Year: 2013

Journal of heat and mass transfer, 7

Faculty: Engineering and Technology

Abstract: Hydrodynamics of micro-orfice flow is investigated numerically in this study. The effect of Kundsen number, Renolds number and orfice geometry on the flow behavior are studied.

Keywords: Kundsen number, orfice , micro , velocity jump.

Research Title: The Impact of Internal Control to E-commerce Activities on the Quality of Internal Auditing in the Financing Companies Operating in Jordan

Author: Ali Ahmad Masadeh, Published Year: 2013

International Research Journal of Finance and Economics, 108

Faculty: Business

Abstract: The study aims to identify the impact of Security and protection , legislation and laws on the quality of internal auditing in the financing companies operating in Jordan, which are (26) companies. A questionnaire was designed by the two researchers and distributed for this purpose on the internal auditors in companies and non-executive committees emanating from the Board of Directors who have direct contact with internal audit in each companies, the number of questionnaires distributed were (150) questionnaires, (120) suitable questionnaires were recovered for analysis, with the rate of recovery reached (80%). The questionnaire data was analyzed using the (SPSS) and a number of statistical techniques through descriptive statistics, arithmetic means, standard deviations and percentages, the study hypotheses were tested by multiple regression tests. The study found that there was no significant impact for the combined independent variables (Security and protection , legislation and laws) on the quality of internal auditing, but there is a statistically significant impact of Security and protection on the quality of its own internal auditing. The study recommends the interest of existing and decision-makers in the financing companies operating in Jordan to raise the level of legislation and laws in order to positively affect the quality of internal auditing in those companies.

Keywords: Internal Control to E-commerce, Quality of internal auditing