Salalah, Oman
Salalah, Oman
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Khan S.F.,Dhofar University
2017 6th International Conference on Industrial Technology and Management, ICITM 2017 | Year: 2017

Healthcare industry has perpetually been on the forefront in the adoption and utilization of information and communication technologies (ICT) for the efficient healthcare administration and treatment. Recent developments in ICT and the emergence of Internet of Things (IoT) have opened up new avenues for research and exploration in the all fields including medical and healthcare industry. Hospitals have started using the cell instruments for communication intent and for this intent internet of things (IoT) has been used and fused with wi-fi sensor node reminiscent of RFID, NFC tag and small sensor nodes. The usage of a cellular agent in healthcare procedure underneath wi-fi community environment gives a chance to explore improved services for patients and staffs reminiscent of medical professionals and nurses given that of its mobility. In this paper novel method to utilize it IoT within the field of scientific and crafty wellness care are presented. The majority of the survey exist about the different healthcare approaches used in the IoT, similar to, wireless well-being monitoring, U-healthcare, E-healthcare, Age-friendly healthcare techniques. This paper describes and proposes a complete monitoring existence cycle and effective healthcare monitoring system designed by using the IoT and RFID tags. The experimental results in this paper show the robust output against various medical emergencies. In this system to get the veracious evaluation results, supervising and weighing the health status of patient and to increase the power of IoT, the combination of microcontroller with sensors is presented. © 2017 IEEE.

Alshubiri F.,Dhofar University
Journal of Industrial Engineering and Management | Year: 2017

Purpose: The purpose of this study is to examine green logistics activities using a three-axis approach (financial-economic, social and environmental activities) and how these activities affect the sustainable monetary expansion indicators for the Sultanate of Oman. Design/methodology/approach: This study begins by defining elements of green logistics and how this concept has evolved in recent years. This concept is analyzed after surveying previous studies on green logistics. The independent variables of green logistics are threefold: financial-economic, social and environmental, and are applied to clarify the impact on monetary expansion indicators (broad, narrow and reserve money), which are important indications for determining the economic condition of a country. This study used data published in the annual statistical report by the Central Bank of Oman as representative of the economic condition of the Sultanate of Oman during the period 2008 to 2015. Findings: Two variables within the environmental activities were found to be statistically significant at 1% and 5%: government support to the electricity sector (GSE) and subsidy on soft loans to the private housing sector (SSLPH). Only one variable (transport and communication (TC)) within the financial-economic activities was statistically significant at 1% and 5%, but all variables (community, social and personal (CSP) relations; cultural and religious affairs (CRA); and social security and welfare (SSW)) within the social activities were statistically significant at 1%, 5% and 10%. Finally, a multiple regression test was also performed on all the variables within the green logistics activities and all the monetary expansion indicators, and they were found to be statistically significant at 1% and 5%. The study recommends that attention should be given to financial-economic activities as a quantitative standard that contributes to developing green logistics. This would entail a diagnosis of the priorities and the existing economic and financial system that contributes to sustainable development of the country's economy. It would also be important to activate the industrial sectors by reducing operating costs and improving the quality of service provided to customers, an indicator of the social activities that conform green logistics, and to increase corporate awareness of the environmental variables and the behavior of consumers in order to establish a financial-economic system based on the concept of green logistics. Research limitations: The available data in the annual statistical report for Oman is limited, which limits the period and all the variables of the study. Practical implications: The management of companies should be adopting green logistics operations if they compare the results of the concepts considered in this study with those of their competitors in the market, in order to consolidate their position in the market. Furthermore, the concept of green logistics helps companies build an intellectual model that contributes to enhancing added value. The results of this study enhance the stability of monetary expansion indicators reflecting economic growth. Social implications: Green logistics plays a behavioral role in the company’s and country’s performance and determines the trends and attitudes for the future growth of companies, especially regarding the environmental indicators. Originality/value: This study aims to analyze green logistics in the financial-economic, social and environmental areas, which reflect the greatest variations, especially as they are affected by changes in global markets, particularly with respect to oil prices, the main source of revenue for the Sultanate of Oman. This is of particular interest as green logistics is one of the modern concepts that are influencing the development of corporate strategies to implement economic plans in the country. This study has also supplied a conceptual research framework to explain green logistics in preparation for many future studies that will examine its elements. © 2017, Universitat Politecnica de Catalunya. All rights reserved.

Khan S.A.,Dhofar University
Global Journal of Pure and Applied Mathematics | Year: 2016

A geometric-arithmetic progression of primes is a set of k primes (denoted by GAPk) of the form p1rj +jd for fixed p1, r and d and consecutive j, i.e, {p1, p1r + d, p1r2 + 2d, p1r3 + 3d, …}. We study the conditions under which, for k ≥ 2, a GAP-k is a set of k primes in geometric-arithmetic progression. Computational data (along with the MATHEMATICA codes) containing progressions up to GAP- 13 is presented. Integer sequences for the sets of differences d corresponding to the GAPs of orders up to 12 are also presented. © Research India Publications.

Zghaibeh M.,Dhofar University
Peer-to-Peer Networking and Applications | Year: 2017

Two fundamental and persistent problems that still confront BitTorrent are unfairness and free riding. This paper proposes O-Torrent, a P2P content distribution mechanism that is derived in principal from BitTorrent. O-Torrent deploys the concept of unidirectional transfers among groups of peers who are arranged in rings. Each peer in O-Torrent can construct one ring and admit peers to it. A peer who constructs a ring becomes its father and hence its administrator. O-Torrent is fair, each peer must upload and participate in the sharing process in order to download. It implements an effective Serve/Request incentive mechanism which enhances the robustness of the mechanism. Furthermore, our results suggest that O-Torrent performs more effectively in punishing free riding behavior and provides better performance than BitTorrent. © 2017 Springer Science+Business Media New York

Khan S.A.,Dhofar University
AIP Conference Proceedings | Year: 2016

The classical treatments have been successful in designing numerous charged-particle devices. It is natural to develop a quantum prescription, since all systems are fundamentally quantum mechanical in nature. The quantum theory leads to new insights accompanied with wavelength-dependent contributions. The action of a magnetic quadrupole is derived from the Dirac equation. © 2016 Author(s).

Jabeur N.,Arab Open University | Zeadally S.,University of the District of Columbia | Sayed B.,Dhofar University
Communications of the ACM | Year: 2013

The latest advances in mobile computing, hardware, and software empower end users worldwide through a range of mobile devices with improved and novel capabilities. The result is intense competition among providers of online social services for mobile users regardless of location and profile, along with numerous mobile social networking (MSN) applications in which billions of people use their mobile devices to tap a spectrum of instant, relevant, high-quality services. MSN applications are social structures consisting of individuals or organizations connected through specific types of interdependency similar to online social networking sites (OSNS). They are based on a variety of architectures depending on whether they are extensions of existing OSNS, designed for mobile devices, focused on mobile users, or data- or service-oriented.

Eltayeb T.K.,Dhofar University | Zailani S.,Universiti Sains Malaysia | Ramayah T.,Universiti Sains Malaysia
Resources, Conservation and Recycling | Year: 2011

The relationship between green supply chain initiatives and performance outcomes has been subject to numerous studies but the results are not conclusive. This study tries to assess the actual environmental, economic and intangible outcomes resulting from the adoption of green supply chain initiatives. This study used a structured questionnaire derived from the literature and employing a mail survey to collect responses form a group of 569 ISO 14001 certified firms in Malaysia. The results of testing the hypotheses that predicted that green supply chain initiatives have positive effect on the outcomes showed that eco-design have significant positive effect on the four types of outcomes (environmental outcomes, economic outcomes, cost reductions, and intangible outcomes). Reverse logistics was found to have significant positive effect on cost reductions only. However, green purchasing was not found to have significant effect on any of the four types of outcome. Through designing environmentally friendly products and taking back products and packaging, business organizations can generate benefits to the environment, in the form of reduced waste and better resource utilization, in addition to economic benefits and cost reductions to the organizations. © 2010 Elsevier B.V. All rights reserved.

Wazwaz A.,Dhofar University | Al-Salaymeh A.,University of Jordan
Energy Conversion and Management | Year: 2013

The alternate and reverse periodic plating techniques were used to prepare the selective absorber samples. The glazed type-flat plate collector was used for photothermal testing. The calculated absorptivity of the selective absorbers (before degradation) falls in the range 92.0-97.0% and after degradation falls in the range 88.3-92.2%; while emissivity (before degradation) falls in the range 11.0-22.5% and after degradation falls in the range 11.6-23.4%. The maximum calculated net collective flux (before degradation) is in the range 590-699 W/m-2 and after degradation is in the range 566.4-664.1 W/m-2. The conversion efficiency (before degradation) is in the range 0.73-0.78 and after degradation falls in the range 0.70-0.74. Degradation testing carried out in air at different temperatures: 100 °C, 200 °C, 250 °C, and 300 °C. The degradation process leads to a decrease in the solar absorptivity and increase in the thermal emissivity of the films especially at 300 °C. Different parameters are discussed concerning the photothermal and the degradation testing. © 2012 Elsevier Ltd. All rights reserved.

Hussain I.,National University of Computer and Emerging Sciences | Gondal M.A.,Dhofar University
Nonlinear Dynamics | Year: 2014

This manuscript is about a modified image encryption algorithm based on coupled map lattices and substitution box transformation. The places of the pixels of image are mix up by using chaotic tent map and after that employing delayed coupled map lattices and S-box transformation to puzzle the association between the original image and the encrypted image. The simulation results validate that the propose technique possesses better strength for realistic image encryption. © 2014 Springer Science+Business Media Dordrecht.

Al-Waked R.,Dhofar University
International Journal of Thermal Sciences | Year: 2010

Effects of crosswinds on the thermal performance of natural draft wet cooling towers (NDWCTs) have been investigated. A three-dimensional CFD model has been used to determine the effect of crosswinds on NDWCTs performance surrounded by power plant building structures. The three-dimensional CFD model has utilized the standard k-ε turbulence model as the turbulence closure. Two cases have been investigated: a stand-alone NDWCT and two NDWCTs within a proposed power plant structures (PPS). It has been found that regardless of the crosswinds direction, an increase of 1.3 k or more could be predicted at crosswinds speeds greater than 4 m/s. Furthermore, the performance of NDWCTs under crosswinds has been found to be dependent on the three major factors: the structure of the approaching crosswinds and whether it is disturbed or undisturbed, the location of the NDWCT in the wake of the other NDWCT, and the location of the NDWCT in front of/in the wake of the PPS. When comparing results from the stand-alone and from the NDWCTs within PPS simulations, differences in ΔTwo were found to be less than 1 K for the whole span of crosswinds speeds and could be decreased to 0.7 K for speeds less than 8 m/s. Finally, results obtained from the simulation of a stand-alone NDWCT could be used instead of those from NDWCTs within PPS at a certain crosswinds direction for qualitative comparisons. © 2009 Elsevier Masson SAS. All rights reserved.

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