Dubai, United Arab Emirates

Rochester Institute of Technology Dubai
Dubai, United Arab Emirates

Rochester Institute of Technology - Dubai is a satellite campus of Rochester Institute of Technology, New York, USA in Dubai, United Arab Emirates. The college, is located in the Dubai Silicon Oasis and started offering part-time graduate courses in Fall 2008. In 2009, the university began its full-time graduate program. RIT Dubai's first graduating class was in 2010, with the graduation ceremony taking place in Rochester, NY. In 2010, a full-time undergraduate program was started as part of the university's planned expansion. In the fall of 2011, RIT Dubai moved its campus to a new premises to accommodate the growing student body. By 2019, RIT plans to expand the campus to 1,000,000 square feet to provide facilities for 4,000 students.The RIT Dubai campus is the Rochester Institute of Technology's third international campus. The university's other satellite campuses are American College of Management and Technology located in Croatia and American University in Kosovo. Wikipedia.

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Samad W.A.,Rochester Institute of Technology Dubai | Considine J.M.,U.S. Department of Agriculture
Conference Proceedings of the Society for Experimental Mechanics Series | Year: 2017

Stress functions have been used as a complementary tool to support experimental techniques, such as thermoelastic stress analysis (TSA) and digital image correlation (DIC), in an effort to evaluate the complete and separate full-field stresses of loaded structures. The need for such coupling between experimental data and stress functions is due to the fact that experimental techniques offer discrete information of stresses or displacements, e.g. isopachic stresses in the case of TSA, as well as unreliable data near edges. For TSA, additional information is needed to separate stresses, as it is often necessary for fatigue analysis and a general better understanding of structural integrity. This separation is often accomplished by using an Airy stress function, which stems from compatibility and equilibrium conditions, and is frequently represented in the form of an indefinite series of coefficients. To date, only ad hoc estimates for the number of coefficients necessary for accurate representation of a loaded structure are used, with the estimates being influenced by quality of experimental data, experimental noise, and complexity of loading and boundary conditions. Information presented here attempts to systematize the selection of the Airy stress function’s indefinite series coefficients relative to experimental thermographic data. © The Society for Experimental Mechanics, Inc. 2017.

Rakhshan K.,Rochester Institute of Technology Dubai | Friess W.A.,University of Maine, United States | Tajerzadeh S.,Rochester Institute of Technology Dubai
Building and Environment | Year: 2013

Environmental sustainability considerations are slowly being integrated into governing criteria and regulations in industrial and urban development worldwide. A "cradle to grave" analysis increases understanding the implications of specific design options in the context of creating an environmentally sustainable product, however in commercial real estate the focus is generally on reducing cost, while long term operational and end-of-service considerations remain on a second plane of importance. The balance between initial costs and operational costs (environmental, economic and energetic) is directly reflected in the building energy use which, while requiring a higher initial investment, constitutes the principal driver in reducing the carbon footprint of the dwelling. But constructive measures that decrease operational energy use and thus also decrease operational greenhouse gas emissions require the use of more insulation materials. The embodied energy and GHG emissions associated with the full lifecycle of these additional materials needs to be included in the overall sustainability balance sheet of the development. This study shows that, in the particular case of the residential built environment of Dubai and the prevailing local electric power source generation mechanisms, the environmental sustainability cost of adding the insulation levels required to significantly mitigate transmission losses is small in comparison to the operational GHG emissions saved by their application. However, and in part due to typically short building lifetime and lack of comprehensive waste management strategies, the overall impact of using these materials within the full lifecycle of the Dubai built environment requires special consideration to end-of-service treatment. © 2013 Elsevier Ltd.

The current worldwide effort to integrate sustainability components within University curricula is generating increasing demand for coursework directed at green and sustainable building design. The overarching outcomes of these courses include understanding the building energy balance, and the application of appropriate strategies to reduce instantaneous and yearly energy consumption. The respective course syllabi often focus on examples applicable within the range of the regional or national climatic conditions; for example, in the UAE little time is typically spent on discussing heating equipment; the focus is on air conditioning and reduction of solar gains. In addition to climatic considerations, building energy-efficiency related coursework requires developing an understanding of what the consumption is when instantaneous energy use is integrated over the hours of the day and over the course of a year. This step is not intuitive, as, while the theoretical background is primarily developed in steady state (such as heat transmission through walls and windows, infiltration, solar gains, heating and air conditioning loads, etc.), the effectiveness of the measures is typically assessed by the change in the building's annual consumption (and thus includes daily and seasonal cycles). The combination of both factors, the need to investigate energetic strategies in widely varying climatic environments, and the difficulty in developing engineering intuition of the long-term effect of efficiency measures, make energy simulations an attractive tool for an experiential learning approach. Especially locations with a strong international exposure, such as RIT Dubai, which hosts of a variety of nationalities from the Gulf region as well as students from the US main campus (thus at home in very different climatic regions), require a global approach for the teaching of sustainable buildings, and can thus benefit most from using energy simulations in their sustainable building courses. The experiential learning component utilized here follows the recommendations of the well established methodology by Kolb [6] and was integrated into a graduate course in Sustainable Energy Management in the Built Environment in the form of a series of simulation-based exercises and projects. The simulation assignment sequence is matched with the course lecture content, the experiential learning sequence, and the learning curve of the simulation software, starting with the analysis of a given building under given circumstances, followed by the critical observation of the results, and the subsequent formation of abstract formulations to be tested in the form of new, increasingly open-ended design projects. A key point is the requirement to carry out these design simulations in different climates (including both cooling and heating environments), and for the two principal energetic building classifications - internal load dominated and envelope dominated. The work presented here discusses the motivation for and effectiveness of simulation-based experiential learning in the sustainable buildings context, presents the approach taken at RIT's Dubai campus, and discusses lessons learned and outcomes. After two course iterations, and subsequent formative and summative assessment of this experiential component in particular, results show high levels of student support, and significant enhancement of perceived learning. Copyright © 2015 SEFI.

Friess W.A.,Rochester Institute of Technology Dubai | Rakhshan K.,Rochester Institute of Technology Dubai | Hendawi T.A.,Rochester Institute of Technology Dubai | Tajerzadeh S.,Rochester Institute of Technology Dubai
Energy and Buildings | Year: 2012

Over the past decade Dubai's energy demand has increased in sync with the rapid urban development and population growth of the UAE. In particular the residential villa stock has grown by more than 300% from 20,000 villas in 2000 to over 60,000 villas in 2009. In order to limit energy consumption, the local authorities introduced building legislation (2001 and 2003) that prescribes minimum insulation levels for external walls and roofs. The resulting constructive solutions focus on the use of a mid-plane insulated prefabricated block to attain the prescribed maximum wall U value (0.57 W/m2 K), however the reinforced concrete frame typically remains non-insulated, and thus introduces significant thermal bridges in the building envelope. This work investigates the impact of this thermal bridging effect on the building's energy consumption by modeling (hourly simulation using DesignBuilder/EnergyPlus) the energetic performance of a series of typically applied insulation strategies, both for buildings in the initial design stage, and in retrofit mode. The simulation model is calibrated against collected consumption data and experimental infiltration measurements of the actual building. Simulation results show that with appropriate external wall insulation strategies alone, energy savings of up to 30% are realized. © 2011 Elsevier B.V. All rights reserved.

Amer M.,Rochester Institute of Technology Dubai
IEEE Vehicular Technology Conference | Year: 2012

In interference-limited OFDMA systems, fractional frequency reuse (FFR) algorithms can be used to combine the superior performance offerings of a universal reuse plan near cell center and a higher reuse plan near cell edge. A proper configuration of FFR requires knowledge of throughput statistics at all locations in the cell coverage area. This paper introduces an analytical optimization technique to configure a FFR solution for the downlink of LTE cellular system based on a throughput model developed herein. The optimal configuration is based on maximizing the average sector throughput subject to a minimum cell-edge performance and other performance constraints related to the standard reuse plans. © 2012 IEEE.

Tchoketch-Kebir L.,Rochester Institute of Technology Dubai | Tlili B.,Rochester Institute of Technology Dubai
2013 7th IEEE GCC Conference and Exhibition, GCC 2013 | Year: 2013

A dual frequency broadband planar monopole antenna with parasitic stub is proposed in this paper. It exhibits good 10 dB bandwidth for return loss from 2.22 to 3.32 GHz and from 3.32 to 3.83 GHz covering long term evolution (LTE) bands 7, 22, 38, 40, 41, and 42. The antenna occupies an overall dimension of 35 mm × 42 mm. Simulation results show good antenna performance in both frequency bands such as 2.12 dBi gain, 80.86 percentage efficiency at 2.6 GHz, and 2.64 dBi gain, 76 percentage efficiency at 3.5 GHz. © 2013 IEEE.

Badra M.,Zayed University | Badra R.B.,Rochester Institute of Technology Dubai
Procedia Computer Science | Year: 2016

In this work, we describe a security solution that can be used to securely establish mobile payment transactions over the Near-Field Communication (NFC) radio interface. The proposed solution is very lightweight one; it uses symmetric cryptographic primitives on devices having memory and CPU resources limitations. We show that our approach maintains the security of NFC communications and we further demonstrate that our solution is simple, scalable, cost-effective, and incurs minimal computational processing overheads. © 2016 Published by Elsevier B.V.

Ahmad S.,Rochester Institute of Technology Dubai
Advanced Materials Research | Year: 2013

My ab initio electronic structure calculations in RSn2n-1Te2n, n=16, R = a vacancy, Cd, and In show that when Sn atom is substituted by R, the Density of State (DOS) of the valence and conduction bands get strongly perturbed. There are significant changes near the band gap region. Sn vacancy causes very little change near the bottom of the conduction band DOS whereas there is an increase in the DOS near the top of the valence band. Results for In impurity shows that, unlike PbTe, the deep defect states in SnTe are resonant states near the top of the valence band. In PbTe these deep defect states lie in the band-gap region (act as n-type). This fundamental difference in the position of the deep defect states in SnTe and PbTe explains the experimental anomalies seen in the case of In impurities (act as n-type in PbTe and p-type in SnTe). © (2013) Trans Tech Publications, Switzerland.

Samad W.A.,Rochester Institute of Technology Dubai | Rowlands R.E.,University of Wisconsin - Madison
Experimental Mechanics | Year: 2014

An assessment of the structural integrity of members containing irregularly-shaped cutouts necessitates knowing the associated stresses. Stress analysis of such structures can be challenging as theoretical solutions are seldom available for finite geometries having non-simple shaped discontinuities and, like numerical methods, they require accurate knowledge of external loads. The latter are often unavailable in practice. This paper describes the ability to process load induced temperature information with an Airy stress function in real polar coordinates to determine the stresses in an isotropic linear elastic finite tensile plate containing an irregularly-shaped hole. Using polar coordinates is significant in that while a relatively simple general solution to the governing biharmonic equation is available in polar coordinates, this is seemingly not so with orthogonal curvilinear coordinates. Compared with displacement-based experimental or finite element techniques, important advantages of the present technique include not having to differentiate recorded data, or know constitutive properties or external loads. © 2013 Society for Experimental Mechanics.

Samad W.A.,Rochester Institute of Technology Dubai | Rowlands R.E.,University of Wisconsin - Madison
Conference Proceedings of the Society for Experimental Mechanics Series | Year: 2015

The most serious stresses are often at the edges of geometric discontinuities, and thereby influencing the overall performance of a structure. Under adiabatic and reversible conditions, thermoelastic stress analysis (TSA) provides nondestructive full-field information of the first stress invariant in a cyclically loaded structure. However, TSA measurements at and near the edges of discontinuities, the regions of prime interest, are often unreliable due to the adverse influence of the surrounding ambient temperature as well as the movement associated with the cyclic loading. Moreover, TSA data at such locations are susceptible to nonadiabaticity because of high stress gradients, thus further supporting the need to predict stresses at edges. A method is presented here for correctly quantifying the often disregarded TSA data at the edges of a structure by making use of the linear elastic conditions of equilibrium and compatibility as well as applying the appropriate boundary conditions. The method is hybrid in the sense that experimental TSA data (excluding disregarded edge measurements) are combined with an analytical expression of the first stress invariant. The achieved improvement in thermoelastic data near discontinuities is demonstrated here for a tensile aluminum structure containing a central irregularly shaped cutout. © The Society for Experimental Mechanics, Inc. 2015.

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