Redesigning network topology with technology considerations

Habib, Sami J.

doi:10.1109/inm.2005.1440788

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…It is also highly unpredictable, because it occurs inconsistently and occasionally implying that there is no fixed cycle of the rainfall. Actually, downpours are mostly due to local atmospheric disturbances in the sea [7]. Hydrologically the Gwadar city is located in the 'Akara' river basin.…”

Section: Location Extent Demography and Climate Of The Gwadar Citymentioning

confidence: 99%

Flood inundation mapping for the Gwadar city

Barlaas¹,

Rehman

Siddique

et al. 2017

MATEC Web Conf.

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Abstract. Floods wreak havoc with human society, infrastructure and the environment. Accuracy and reliability of the forecasts concerning the resultant inundation depths and extents of these floods are primarily dependent upon the employed hydrologic modeling approach. In the present study, a more precise distributed hydrological modeling approach has been exploited with grid-based spatial discretization for the simulation of flood inundation in Akara river watershed which contains a proposed metropolitan-level developed coastal city of Gwadar in the 'Balochistan' province of Pakistan. Institute of Industrial Sciences Distributed Hydrological Model, a physically based distributed hydrological model, has been employed. This model, through fully implicit finite difference schemes, utilizes diffusive wave approximations of 1D and 2D Saint Venant's governing equations for the river and over-land flow components, respectively. While the model is calibrated against the cyclonic flood event of June 2007, to earmark the potential hazardous areas inside as well as outside the Master Plan boundary the flood inundation simulation for the worst precipitation events of 50 and 100 years return periods are performed. The simulated flood inundation depths at various known locations showed good agreement with the observed ones. Moreover, the simulations depict that the simulated flood inundation depths at the same locations increase by 1.07 to 1.87 times and 1.21 to 1.89 times respectively due to 50 and 100 years return period rainfalls.

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Section: Location Extent Demography and Climate Of The Gwadar Citymentioning

confidence: 99%

Flood inundation mapping for the Gwadar city

Barlaas¹,

Rehman

Siddique

et al. 2017

MATEC Web Conf.

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“…Significant research has been done to address many variants of the network topology design (NTD) problem, and a number of techniques have been proposed to find efficient solutions to these problems [10,15,20,21,29,35]. A CC-NTD problem requires an objective or objectives to be optimized.…”

Section: Among Many Complex Optimization Problems Computer Communicamentioning

confidence: 99%

A fuzzy particle swarm optimization algorithm for computer communication network topology design

Khan

Engelbrecht

2010

Appl Intell

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“…Extensive research has been done to develop efficient optimization techniques for this complex optimization problem Dengiz et al (1997a,b), Elbaum and Sidi (1996), Gen et al (1998), Gupta and Dally (2006), Habib (2005), Pierre and Legault (1998). Topology design has been categorized as an NP-hard problem Elbaum and Sidi (1996), Ersoy and Panwar (1993), Gen et al (1998).…”

Section: Backbonementioning

confidence: 99%

Fuzzy hybrid simulated annealing algorithms for topology design of switched local area networks

Khan

Engelbrecht

2008

Soft Comput

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Topology design of switched local area networks (SLAN) is classified as an NP-hard problem since a number of objectives, such as monetary cost, network delay, hop count between communicating pairs, and reliability need to be simultaneously optimized under a set of constraints. This paper presents a multiobjective heuristic based on a simulated annealing (SA) algorithm for topology design of SLAN. Fuzzy logic has been incorporated in the SA algorithm to handle the imprecise multiobjective nature of the SLAN topology design problem, since the logic provides a suitable mathematical framework to address the multiobjective aspects of the problem. To enhance the performance of the proposed fuzzy simulated annealing (FSA) algorithm, two variants of FSA are also proposed. These variants incorporate characteristics of tabu search (TS) and simulated evolution (SimE) algorithms. The three proposed fuzzy heuristics are mutually compared with each other. Furthermore, two fuzzy operators, namely, ordered weighted average (OWA) and unified AND-OR (UAO) are also applied in certain steps of these algorithms. Results show that in general, the variant which embeds characteristics of SimE and TS into the fuzzy SA algorithm exhibits more intelligent search of the solution subspace and was able to find better solutions than the other two variants of the fuzzy SA. Also, the OWA and UAO operators exhibited relatively similar performance.

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Redesigning network topology with technology considerations

Cited by 6 publications

References 20 publications

Flood inundation mapping for the Gwadar city

Flood inundation mapping for the Gwadar city

A fuzzy particle swarm optimization algorithm for computer communication network topology design

Fuzzy hybrid simulated annealing algorithms for topology design of switched local area networks

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