Search Results - "Nawaz, Akhtar"

A Constrained Maximum Available Frequency Slots on Path Based Online Routing and Spectrum Allocation for Dynamic Traffic in Elastic Optical by Khan, Akhtar Nawaz

“…Elastic optical networking is a potential candidate to support dynamic traffic with heterogeneous data rates and variable bandwidth requirements with the…”
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An advanced iterative model for computing approximated blocking probabilities and measuring the quality of service in optical communication networks by Khan, Akhtar Nawaz, Ali, Amjad, Imtiaz, Waqas A., Ullah, Sibghat

“…Existing analytical models (EAMs) are used to find the quality of service of optical networks with wavelength division multiplexing (WDM). However, the…”
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Capacity Enhancement for Free Space Optics Transmission System Using Orbital Angular Momentum Optical Code Division Multiple Access in 5G and beyond Networks by El-Mottaleb, Somia, Singh, Mehtab, Chehri, Abdellah, Ahmed, Hassan, Zeghid, Medien, Khan, Akhtar

“…This paper introduces a novel free space optics (FSO) communication system for future-generation high-speed networks. The proposed system integrates orbital…”
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The Historical Background to Pakistan's Participation at the Olympic Games and Its Performances in Field Hockey, 1948-1956 by Nawaz, Akhtar, Hess, Rob

“…It is easy to gain the impression from the copious literature that each Olympic Games has been carefully assessed by academics. Certainly, a wealth of detail…”
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Joint routing, link capacity dimensioning, and switch port optimization for dynamic traffic in optical networks by Khan, Akhtar Nawaz, Khan, Zawar H., Khattak, Khurram S., Hafeez, Abdul

“…This paper considers a challenging problem: to simultaneously optimize the cost and the quality of service in opaque wavelength division multiplexing (WDM)…”
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An Iterative Optimization Approach for Routing, Modulation, and Categorical Spatial Bandwidth Block Allocation to Improve Network Performance for Dynamic Traffic in Elastic Optical Networks by Khan, Akhtar Nawaz, Ahmed, Hassan Yousif, Chehri, Abdellah, Zeghid, Medien, Khan, Zawar H., Iqbal, Abid

“…In this work, we have proposed an iterative optimization model for allocating spectral resources in optical networks. The proposed model gives spatial routes…”
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A Microscopic Heterogeneous Traffic Flow Model Considering Distance Headway by Ali, Faryal, Khan, Zawar Hussain, Khattak, Khurram Shehzad, Gulliver, Thomas Aaron, Khan, Akhtar Nawaz

“…The intelligent driver (ID) model characterizes traffic behavior with a constant acceleration exponent and does not follow traffic physics. This results in…”
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Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks by Khan, Akhtar Nawaz, Yousif Ahmed, Hassan, Zeghid, Medien, Imtiaz, Waqas A., Khan, Zawar H.

“…Fixed alternate routing is a potential routing scheme for routing and spectrum allocation (RSA) in elastic optical networks (EON) which has less complexity and…”
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An Anisotropic Traffic Model Based on Driver Interaction by Khan, Zawar H., Imran, Waheed, Gulliver, Thomas Aaron, Khattak, Khurram S., Wadud, Zahid, Khan, Akhtar Nawaz

“…The anisotropic Zheng and Jiang models characterize traffic with a constant rearward velocity. They also consider a constant driver sensitivity which can…”
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Investigation of water droplet kinetics and optimization of channel geometry for PEM fuel cell cathodes by Akhtar, Nawaz, Qureshi, Arshad, Scholta, Joachim, Hartnig, Christoph, Messerschmidt, Matthias, Lehnert, Werner

“…The kinetics and transport mechanisms of water droplets in model flow field channels of a low temperature polymer electrolyte fuel cell were investigated. The…”
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Hybrid Optimized Approaches for Routing and Resource Reservation Protocols in Optical Networks by Khan, Akhtar Nawaz, Yousif Ahmed, Hassan, Zeghid, Medien, Brahim Belhaouari, Samir, Imtiaz, Waqas, Khattak, Khurram

“…We have proposed hybrid approaches to solve dynamic provisioning problems in fixed-grid and elastic optical networks (EON). The proposed approaches use the…”
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Modified Optical Burst Switching (OBS) Based Edge Node Architecture Using Real-Time Scheduling Techniques by Zeghid, Medien, Amaseb, Kamal, Ahmed, Hassan Yousif, Khan, Akhtar Nawaz, Chehri, Abdellah, Sharma, Teena, Nisar, Kottakkaran Sooppy

“…Contention is the main problem in optical burst switching (OBS) systems that lead to loss more burst by dropping the contended burst. To deal with this…”
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Adaptive Transceiver Architecture With QoS Provision for OCDMA Network Based on Logic Gates by Ahmed, Hassan Yousif, Zeghid, Medien, Imtiaz, Waqas Ahmed, Sharma, Teena, Khan, Akhtar Nawaz, Nisar, Kottakkaran Sooppy, Abdel-Aty, Abdel-Haleem, Mahmoud, Mona, Aljahdali, Sultan

“…Utilization of an adaptable transceiver with quality of service (QoS) features is a promising notion to build next generation optical network. This paper…”
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Sustainable and Resilient Smart Water Grids: A Solution for Developing Countries by Khattak, Khurram Shehzad, Jawwad, Muhammad, H. Khan, Zawar, Gulliver, T. Aron, Khan, Akhtar Nawaz, Khan, Mushtaq A.

“…According to a United Nations report, the world population will increase from 7 billion to 9 billion by 2050. Further, the water stress level is more than 70%…”
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Online routing, distance-adaptive modulation, and spectrum allocation for dynamic traffic in elastic optical networks by Khan, Akhtar Nawaz

“…•A routing algorithm is proposed for elastic optical networks with mixed line rates.•Routing decisions are initially made based on the modulation scheme with…”
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Online service provisioning in elastic optical networks with hybrid algorithm for congestion aware routing and spectrum allocation by Khan, Akhtar Nawaz

“…•A hybrid routing scheme is proposed for routing in EON.•An optimizaton model is presented with heterogeneous bandwidth demands.•The proposed model maintains a…”
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Histological pattern of glomerulopathies by Noor Mohammad, Taj Mohammad Khan, Akhtar Nawaz Orakzai, Mohammad Imran

“…Background: Glomerulopathies result in a variety of signs and symptoms. The aim of this study was to determine the histological pattern of glomerulopathies in…”
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An improved approximate network blocking probability model for all-optical WDM Networks with heterogeneous link capacities by Khan, Akhtar Nawaz

“…Currently, analytical models are used to compute approximate blocking probabilities in opaque and all-optical WDM networks with the homogeneous link…”
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Routing and dimensioning in optical WDM networks for dynamic traffic using post-optimization approach by Khan, Akhtar Nawaz

“…•Pre-optimization stage jointly considers routing and link capacity optimization.•Integer constraints of the optimization problem are relaxed using LP…”
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Situs inversus abdominus in association with congenital duodenal obstruction: a report of two cases and review of the literature by Nawaz, Akhtar, Matta, Hilal, Hamchou, Mustafa, Jacobez, Alic, Trad, Omar, Al Salem, Ahmed H

“…This report describes two newborns with persistent bile-stained vomiting. Their radiological investigations revealed the existence of situs inversus and…”
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