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We have performed the numerical simulation of the perturbed relativistic torus around the black hole by solving the general relativistic hydrodynamics equations on the equatorial plane. We have monitored the different simple models by applying the radial and angular velocity perturbations to the steady state torus around the black hole. The instabilities are triggered by adding the subsonic velocity fields over the radial and angular velocities of the stable torus. We have found the disk instability so-called the Papaloizou-Pringle instability and excited modes of the Quasi-Periodic Oscillations (QPOs) in the thin disk approximation case. The significant oscillations and oscillation modes in the mass accretion rates are observed around the rotating black hole with a radial velocity perturbation. The angular velocity perturbation can not create the significant variations and QPOs in the nonselfgravitating relativistic torus around the nonrotating and rotating black holes. The results observed from the radial velocity perturbation might be used to explain the Papaloizou-Pringle instability observed in NGC 1068. © 2017 Tübitak.


Sharma S.K.,Sultan Qaboos University | Joshi A.,Middle East College | Sharma H.,Nizwa College of Technology
Computers in Human Behavior | Year: 2016

Socio constructivist approach has an important say in cognitive absorption of learning in a student's life. This era of social networking services has given substantial importance to collaborative nature of learning, thus supporting Vygotsky's socio constructivist approach. The aim of this paper is to predict key determinants that affect students' intention towards academic use of Facebook. The usable data were gathered from 215 Omani students, and multi-analytical methods were employed to test the proposed research model. The results obtained from structural equation modeling (SEM) showed that resource sharing is the most influencing determinant in the decision of Facebook usage in higher education, followed by perceived usefulness, perceived enjoyment, collaboration and social influence. Further, the results obtained from SEM were used as input to the neural network model and results showed that collaboration is the most important predictor of Facebook adoption for academic purposes followed by, resource sharing, perceived enjoyment, social influence, and perceived usefulness. The findings of this study can be used to enhance the use of social media tool like Facebook for teaching and learning purposes. This is the first study which analyzed Facebook adoption for academic purposes by using a linear and nonlinear modelling. Theoretical and practical implications are discussed. © 2015 Elsevier Ltd. All rights reserved.


Keceli Y.,Middle East College
Maritime Policy and Management | Year: 2016

A multi-purpose cargo terminal in a seaport contains necessary infrastructure to handle different types of cargo, such as container, dry bulk, general bulk, and Ro-Ro. Since such terminals generally have dedicated areas and equipment for different types of cargo, berth, and yard operations for each type of cargo can be considered separate. On the other hand, trucks that carry all types of cargo use the same gate structure to enter and leave the terminal. Therefore, a method to superimpose the traffic that is caused by different types of cargo is needed for the planning of gate investments and operations. Consequently, this paper has developed a simulation model for a multi-purpose terminal to estimate the gate traffic and determine the necessary gate infrastructure, so that it can be used as a decision support tool for terminal planners and operational managers. © 2016 Informa UK Limited, trading as Taylor & Francis Group


Asdemir K.,Middle East College
Information Technology and Management | Year: 2011

We develop an infinite horizon alternative-move model of the unique second-price sponsored search auction. We use this model to explain two distinguishable bidding patterns observed in our bidding data: bidding war cycle and stable bid. With examples, we show that only a small portion of the value generated may be extracted by search engines, if advertisers are engaged in bidding war cycles. Finally, we show the impact of auction design on advertiser bids and search engine revenue. © 2010 Springer Science+Business Media, LLC.


Meier D.,Middle East College
British Journal of Middle Eastern Studies | Year: 2014

How did the Palestinian Resistance build the key transnational figure of the fidâ'i and why did South Lebanon play a major role in this process? Assessing the hypothesis of the 'Lebanonisation' of this symbol of the Palestinian national struggle, this article will examine the role and the symbol of the fidâ'i in the context of Lebanon in the 1970s, through an analysis of the actions of the fidâ'iyyn and the values and ethics that fidâ'iyyn were supposed to embody. Drawing on interviews with former fidâ'iyyn and previous research on the topic, I will consider the two dimensions of the presence of the fidâ'iyyn: first, their location in South Lebanon and how this borderland became a significant part of their struggle in the political consciousness of the marginalised local population; and second, the nature of the symbol they began to represent for Lebanese groups, especially those who became involved in Resistance groups like the student brigade (al-katibe al-tullabiyya). © 2014 British Society for Middle Eastern Studies.


Rufus E.,Middle East College
2015 International Conference on Computer Communication and Informatics, ICCCI 2015 | Year: 2015

In this paper the feasibility of using a circular microstrip patch antenna fabricated on flexible kapton substrate to measure strain is investigated by performing a preliminary laboratory experiment. When a patch antenna is deformed, the dimensions of the antenna changes and hence the resonant frequency of the antenna changes which is taken to be an indication of change in the strain applied. A circular microstrip patch antenna on a flexible kapton substrate operating at 4.618 GHz has been designed based on the relation between the radius of the circular patch and its resonant frequency. The resonant frequency of the microstrip patch antenna decreases linearly with the increase in the applied strain. The shift in the resonant frequency is nearly 3 MHz when the stain is 0.18%. This microstrip circular patch antenna can be used with other components easily and can be very useful in biomedical applications and in structural health monitoring. © 2015 IEEE.


Dawood M.H.,Middle East College
2016 3rd MEC International Conference on Big Data and Smart City, ICBDSC 2016 | Year: 2016

Sustainable buildings with minimum energy consumption and with less negative impact to environment becomes an important goal of public and private organization all over the world. On the other hand, energy cost has a high contribution with the building Life Cycle Cost (LCC) for the owners. Subsequently, reducing energy consumption by selecting the best design options during the initial stages of any residential project is one of the key factors to that issue. The target of the proposed framework is to find the optimal design that gives a minimum life cycle cost over the building life span. The integration between Building Information Modeling (BIM) and Genetic Algorithm (GA) is used to reach the near-optimal solution. BIM is the simulation tool to generate the building design and dynamically analysis for the energy consumption of the house. The role of GA is to reach the solution by setting the effective variables and use a measurable objective function with proper constraints. The proposed model automatically identifies the most suitable house components to reach the minimum LCC during the design stage. Parametric programming language is used to facilitate interoperability between BIM and the other components of the model. © 2016 IEEE.


Ismail A.,Middle East College
2016 3rd MEC International Conference on Big Data and Smart City, ICBDSC 2016 | Year: 2016

Cities generate huge volumes of data that are diverse in nature and are generated on a daily basis. These data types involve environment, energy, transport and economic data. This includes structured and unstructured data which needs to be processed and understood to become valuable. By managing and analyzing big data, smart cities will be able to tackle formidable problems and ascend to a state where better and more informed decisions will be taken resulting in enhanced economic and environment outcomes leading to better quality of life. This paper reviews utilizing big data in cities by using big data analytics as a solution for smart cities and conceiving related issues being faced. © 2016 IEEE.


Dakssa L.M.,Middle East College
2016 3rd MEC International Conference on Big Data and Smart City, ICBDSC 2016 | Year: 2016

Urban areas in mountainous regions of the world normally face frequent rock slope failures that often disrupt traffic flow and that might also cause serious damages to lives and properties in the vicinity. This paper therefore intends to discuss rock slope stabilization practices in urban areas in Sultanate of Oman. Even though there are different rock slope stabilization methods, no single method appears to provide a solution to the existing rock slope stability problems alone. So, the strategy should be to select a combination of available methods even if that makes the overall approach costly and challenging as well. The selection of a combination of different rock slope stabilization methods in turn should be guided by sound rock slope stabilization planning. Moreover, professional expertise and technology at one's disposal appear to play a vital role in the rock slope stabilization endeavor. © 2016 IEEE.


Samuel S.S.I.,Middle East College
2016 3rd MEC International Conference on Big Data and Smart City, ICBDSC 2016 | Year: 2016

The Internet of Things with its enormous growth widens its applications to the living environment of the people by changing a home to smart home. Smart home is a connected home that connects all type of digital devices to communicate each other through the internet. These devices form a home area network where communications are enabled by different protocols. As these devices are designed by different companies with different standards and technologies there is a problem exists in their connectivity. This paper aims at describing the wireless standards used in home network and how these protocols face the connectivity challenges in the smart home network. © 2016 IEEE.

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