Dubai, United Arab Emirates
Dubai, United Arab Emirates

The American University in Dubai is a private, non-sectarian institution of higher learning in Dubai, United Arab Emirates, founded in 1995. AUD is accredited regionally as a separate unit by the Southern Association of Colleges and Schools. AUD serves UAE nationals and international students from all over the world and offer them an American-style education. The University has both US and UAE accreditation for all of its programs. AUD is the only university outside the United States and Latin America to be directly accredited by the Southern Association of Colleges and Schools, although it is not the only US-accredited university in the Persian Gulf region . American University in Dubai is not affiliated with American University in Washington, D.C.2012–2013 enrollment was around 3,000 and over 100 nationalities are represented in the student body. AUD has a diverse faculty of over 180. AUD's curricula is skill-directed and career-oriented.The University is organized into Schools: School of Architecture, Art and Design Department of Architecture Department of Interior Design Department of Visual Communication School of Arts and science Middle Eastern StudiesSchool of Business Administration Department of Business and Economics Department of Finance and Accounting Department of Management Department of Marketing and Marketing CommunicationsMohammed bin Rashid School for Communication School of EducationSchool of Engineering Department of Civil Engineering Department of Computer and Electrical Engineering Department of Mechanical EngineeringServing the Community at large as a source of expertise from within the AUD faculty members, AUD’s different centers offer services ranging from training and consultancy to research projects within their respective sectors. Wikipedia.

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Taheri P.,Simon Fraser University | Mansouri A.,American University in Dubai | Yazdanpour M.,Simon Fraser University | Bahrami M.,Simon Fraser University
Electrochimica Acta | Year: 2014

An analytical model is proposed to describe the two-dimensional distribution of potential and current in planar electrodes of pouch-type lithium-ion batteries. A concentration-independent polarization expression, obtained experimentally, is used to mimic the electrochemical performance of the battery. By numerically solving the charge balance equation on each electrode in conjugation with the polarization expression, the battery behavior during constant-current discharge processes is simulated. Our numerical simulations show that reaction current between the electrodes remains approximately uniform during most of the discharge process, in particular, when depth-of-discharge varies from 5% to 85%. This observation suggests to simplify the electrochemical behavior of the battery such that the charge balance equation on each electrode can be solved analytically to obtain closed-form solutions for potential and current density distributions. The analytical model shows fair agreement with numerical data at modest computational cost. The model is applicable for both charge and discharge processes, and its application is demonstrated for a prismatic 20 Ah nickel-manganese-cobalt lithium-ion battery during discharge processes. © 2014 Elsevier Ltd.

Amendah D.D.,African Population and Health Research Center | Buigut S.,American University in Dubai | Mohamed S.,African Population and Health Research Center
PLoS ONE | Year: 2014

Aims: In Kenya, it is estimated that 60 to 80% of urban residents live in slum or slum-like conditions. This study investigates expenditures patterns of slum dwellers in Nairobi, their coping strategies and the determinants of those coping strategies. Method: We use a dataset from the Indicator Development for Surveillance of Urban Emergencies (IDSUE) research study conducted in four Nairobi slums from April 2012 to September 2012. The dataset includes information related to household livelihoods, earned incomes of household members, expenditures, shocks, and coping strategies. Results: Food spending is the single most important component, accounting for 52% of total households' income and 42% of total expenditures. Households report a variety of coping strategies over the last four weeks preceding the interview. The most frequently used strategy is related to reduction in food consumption, followed by the use of credit, with 69% and 52% of households reporting using these strategies respectively. A substantial proportion of households also report removing children from school to manage spending shortfalls. Formal employment, owning a business, rent-free housing, belonging to the two top tiers of income brackets, and being a member of social safety net reduced the likelihood of using any coping strategy. Exposure to shocks and larger number of children under 15 years increased the probability of using a coping strategy. Policy Implications: Policies that contain food price inflation, improve decent-paying job opportunities for the urban poor are likely to reduce the use of negative coping strategies by providing urban slum dwellers with steady and reliable sources of income. In addition, enhancing access to free primary schooling in the slums would help limit the need to use detrimental strategies like "removing" children from school. © 2014 Amendah et al.

Bahr W.,American University in Dubai
CESB 2013 PRAGUE - Central Europe Towards Sustainable Building 2013: Sustainable Building and Refurbishment for Next Generations | Year: 2013

This research investigates the performance of an external shading device with integrated photovoltaic panels. The optimal design dimensions of an adjustable shading device with horizontal louvers and integrated photovoltaic panels are determined in regards to the energy efficiency of buildings and to the visual comfort of building occupants. The analyses are carried out for three different locations (25°, 35° and 45° latitude north) with three different weather conditions, and taking into consideration three different façade orientations (south east, south, and south west). The impact of the shading device design variables on the energy demand for cooling and heating, on the energy performance of the photovoltaic panels, on the use of natural light inside the building, and on the view to the outside are analyzed. The aim of this research is to offer the architects a simple tool to the design of energy efficient buildings while integrating shading devices and photovoltaic panels into building façades.

Moukayed M.,American University in Dubai | Grant W.B.,Nutrition and Health Research Center
Nutrients | Year: 2013

The metabolite of vitamin D, 1α,25-dihydroxyvitamin D3 (also known as calcitriol), is a biologically active molecule required to maintain the physiological functions of several target tissues in the human body from conception to adulthood. Its molecular mode of action ranges from immediate nongenomic responses to longer term mechanisms that exert persistent genomic effects. The genomic mechanisms of vitamin D action rely on cross talk between 1α,25-dihydroxyvitamin D3 signaling pathways and that of other growth factors or hormones that collectively regulate cell proliferation, differentiation and cell survival. In vitro and in vivo studies demonstrate a role for vitamin D (calcitriol) in modulating cellular growth and development. Vitamin D (calcitriol) acts as an antiproliferative agent in many tissues and significantly slows malignant cellular growth. Moreover, epidemiological studies have suggested that ultraviolet-B exposure can help reduce cancer risk and prevalence, indicating a potential role for vitamin D as a feasible agent to prevent cancer incidence and recurrence. With the preventive potential of this biologically active agent, we suggest that countries where cancer is on the rise-yet where sunlight and, hence, vitamin D may be easily acquired-adopt awareness, education and implementation strategies to increase supplementation with vitamin D in all age groups as a preventive measure to reduce cancer risk and prevalence. © 2013 by the authors; licensee MDPI, Basel, Switzerland.

Majzoub S.,American University in Dubai
IDT'10 - 2010 5th International Design and Test Workshop, Proceedings | Year: 2010

Today, power management is a key design objective in chip fabrication. In this paper, we present a novel approach to reduce power consumption in SIMD based multi-core architectures. Voltage scaling technique is used, by implementing voltage islands, to optimize power and performance tradeoff for the cores. The number of islands and their respective voltage are selected based on the power-delay characteristics of each instruction: slow instructions run at the nominal voltage while fast instructions run at a lower voltage to save power. An image compression algorithm is mapped into the hardware to demonstrate the power reduction. The results show energy savings of 2.0X for the specified application. ©2010 IEEE.

Choudhury G.,Institute of Advanced Study in Science and Technology | Tadj L.,American University in Dubai | Deka K.,Institute of Advanced Study in Science and Technology
Computers and Mathematics with Applications | Year: 2010

This paper deals with the steady-state behavior of an MX / G / 1 retrial queue with an additional second phase of optional service and service interruption where breakdowns occur randomly at any instant while the server is serving the customers. Further, the concept of delay time is also introduced in the model. This model generalizes both the classical MX / G / 1 retrial queue with service interruption as well as the MX / G / 1 queue with second optional service and service interruption. We carry out an extensive analysis of this model. © 2009 Elsevier Ltd. All rights reserved.

El-Hassan H.,American University in Dubai | Shao Y.,McGill University
Cement and Concrete Composites | Year: 2015

Abstract The effect of carbonation curing on the mechanical properties and microstructure of concrete masonry units (CMU) with Portland limestone cement (PLC) as binder was examined. Slab samples, representing the web of a CMU, were initially cured at 25°C and 50% relative humidity for durations up to 18 h. Carbonation was then carried out for 4 h in a chamber at a pressure of 0.1 MPa. Based on Portland limestone cement content, CO2 uptake of PLC concrete after 18 h of initial curing reached 18%. Carbonated and hydrated concretes showed comparable compressive strength at both early and late ages due to the 18-h initial curing. Carbonation reaction converted early hydration products to a crystalline microstructure and subsequent hydration transformed amorphous carbonates into more crystalline calcite. Portland limestone cement could replace Ordinary Portland Cement (OPC) in making equivalent CMUs which have shown similar carbon sequestration potential. © 2015 Elsevier Ltd.

Saqan E.,American University in Dubai | Rasheed H.,Kansas State University
Journal of the Franklin Institute | Year: 2011

Recent research in concrete analysis and design has revealed that the shear capacity contributed by concrete correlates well with the neutral axis depth. While nonlinear analysis calculation of the neutral axis depth is trivial for reinforced concrete beams, it is iterative for prestressed concrete beams and does not lend itself to straightforward hand calculations. In this study, a program is developed to simulate the response of prestressed concrete rectangular sections subjected to monotonic bending taking into account cracking, yielding and ultimate states. This program is used to benchmark a simplified analytical procedure devised to perform the same task by hand. Accordingly, critical observations made to a large pool of experimental and analytical results reveal that the momentcurvature and momentextreme fiber strain can be accurately modeled as trilinear relationships. The four key points that define the trilinear functions (initial, cracking, yielding and ultimate) may be computed analytically from simple equations derived based on consistent assumptions with the true behavior. Once the simplified analysis is performed, the computation of the neutral axis depth becomes a simple hand calculation. A parametric study was performed to further simplify the analytical procedure by computing the four key points that define the trilinear functions through linear relationships that were derived based on regression analysis of a large number of beam solutions. The neutral axis depth was calculated using the analytical and the simplified procedures for three beams with different ratios of prestressing steel and concrete strength. The results compared well with the iterative numerical procedure. © 2010 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.

Saqan E.I.,American University in Dubai | Rasheed H.A.,Kansas State University | Hawileh R.A.,American University of Sharjah
Composites Part B: Engineering | Year: 2013

The technology of using FRP composites to strengthen concrete members has proven its effectiveness over the years. Accordingly, design guides have been developed to aid engineers in applying this technology. ACI 440.2R-08 is one of the major design guides used in the US and elsewhere in the world. Due to the existence of two major sectional tensile forces in steel and FRP as well as the likelihood of different failure modes, the ACI 440.2R-08 flexural strengthening design procedure leads to an iterative process. In this study an efficient design procedure that eliminates the need for iterations is developed. The FRP area determined from the developed design procedure has been shown to correlate very accurately to the exact area obtained iteratively according to the ACI 440.2R-08 document. Several design examples are solved to illustrate the potential use of this efficient and simple design procedure in expediting the current design computations. © 2013 Elsevier Ltd. All rights reserved.

Lim S.S.,American University in Dubai
Journal of International Development | Year: 2015

Despite its significance in household welfare, little is known about the capacity of intrahousehold risk sharing arrangements to insure consumption against major health shocks. Using rich health data from the Indonesian Family Life Survey, this study finds no evidence of full insurance against adult morbidity in rural Indonesia. In particular, the results show sizable and significant effects of adult morbidity on food consumption. They imply that, despite the recent health sector reforms of Indonesia, the health insurance system is not effective in shielding agricultural households against some severe and long lasting health shocks. © 2015 John Wiley & Sons, Ltd.

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