Iftikhar Azim Niaz

Iftikhar Azim Niaz
COMSATS University Islamabad | CUI · Department of Computer Science

Doctor of Philosophy

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36
Publications
31,059
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972
Citations

Publications

Publications (36)
Article
Full-text available
In literature, proposed approaches mostly focused on household appliances scheduling for reducing consumers' electricity bills, peak-to-average ratio, electricity usage in peak load hours, and enhancing user comfort level. The scheduling of smart home deployed energy resources recently became a critical issue on demand side due to a higher share of...
Article
Full-text available
In recent studies, emphasis has been placed on optimal power flow (OPF) problems in traditional thermal, wind, and solar energy sources-based hybrid power systems. Various metaheuristic algorithms have been proposed to find optimal solutions to the OPF problems in the hybrid power system. The OPF, due to the quadratic nature of its primary objectiv...
Chapter
Incorporating fluctuant and intermittent nature wind power and solar photovoltaic (PV) power in the power system lead to significant challenges for system planning and operation which are risen from uncertainties associated with renewable energy. This paper placed emphasis on OPF problem. Bird swarm algorithm (BSA) is employed to optimize power gen...
Conference Paper
Incorporating fluctuant and intermittent nature wind power and solar pho-tovoltaic (PV) power in the power system lead to significant challenges for system planning and operation which are risen from uncertainties associated with renewable energy. This paper placed emphasis on OPF problem. Bird swarm algorithm (BSA) is employed to optimize power ge...
Article
Full-text available
Software offshore outsourcing is strong pillar of software development. Software offshore outsourcing involves many risks, due to internal or external factors, that must be recognized and managed. Each organization that deals with the offshore outsourcing must be well aware of all the risk factors and barriers in the offshore outsourcing to maintai...
Article
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Localization is one of the major aspects in underwater wireless sensor networks (UWSNs). Therefore, it is important to know the accurate position of the sensor node in large scale applications like disaster prevention, tactical surveillance and monitoring. Due to the inefficiency of the global positioning system (GPS) in UWSN, it is very difficult...
Article
In this paper, to monitor the fields with square and circular geometries, three energy-efficient routing protocols are proposed for underwater wireless sensor networks (UWSNs). First one is, sparsity-aware energy efficient clustering (SEEC), second one is, circular SEEC (CSEEC), and the third one is, circular depth based SEEC (CDSEEC) routing proto...
Article
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Traditional power grid and its demand-side management (DSM) techniques are centralized and mainly focus on industrial consumers. The ignorance of residential and commercial sectors in DSM activities degrades the overall performance of a conventional grid. Therefore, the concept of DSM and demand response (DR) via residential sector makes the smart...
Article
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In this paper, a Multi-agent based locally administrated Power Distribution Hub (PDH) for social welfare is proposed that optimizes energy consumption, allocation and management of Battery Energy Storage Systems (BESSs) for a smart community. Initially, formulation regarding optimum selection of a power storage system for a home (in terms of storag...
Article
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In this paper, three opportunistic pressure based routing techniques for underwater wireless sensor networks (UWSNs) are proposed. The first one is the cooperative opportunistic pressure based routing protocol (Co-Hydrocast), second technique is the improved Hydrocast (improved-Hydrocast), and third one is the cooperative improved Hydrocast (Co-imp...
Article
In this paper, we propose two schemes; position-aware mobility pattern (PAMP) and cooperative PAMP (Co PAMP). The first one is an optimization scheme that avoids void hole occurrence and minimizes the uncertainty in the position estimation of glider’s. The second one is a cooperative routing scheme that reduces the packet drop ratio by using the re...
Article
Full-text available
Demand Response (DR) programs under the umbrella of Demand Side Management (DSM) tend to involve end users in optimizing their Power Consumption (PC) patterns and offer financial incentives to shift the load at “low-priced” hours. However, users have their own preferences of anticipating the amount of consumed electricity. While installing an Energy...
Article
Full-text available
In recent years, demand side management (DSM) techniques have been designed for residential, industrial and commercial sectors. These techniques are very effective in flattening the load profile of customers in grid area networks. In this paper, a heuristic algorithms-based energy management controller is designed for a residential area in a smart...
Article
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In wireless sensor networks (WSNs), energy balancing and energy efficiency are the key requirements to prolong the network lifetime. In this paper, we investigate the problem of energy hole, where sensor nodes located near the sink or in some other parts of the network die very early due to unbalanced load distribution. Moreover, there is a dire ne...
Article
Full-text available
Mobile Sink (MS) based routing strategies have been widely investigated to prolongs the lifetime of Wireless Sensor Networks (WSNs). In this paper, we propose two schemes for data gathering in WSNs: (i) MS moves on Random paths in the network (RMS), and (ii) the trajectory of MS is Defined (DMS). In both the schemes, the network field is logically...
Article
Abstract In this paper, we exploit cooperative communication for design- ing an energy efficient routing algorithm in Underwater Wireless Sensor Net- works (UWSNs). Each network node is equipped with a single omnidirectional antenna and multiple nodes coordinate while taking advantage of spatial di- versity. This research work is limited in scope t...
Article
Full-text available
In this paper, a novel routing strategy to cater the energy consumption and delay sensitivity issues in deep underwater wireless sensor networks is proposed. This strategy is named as ESDR: Event Segregation based Delay sensitive Routing. In this strategy sensed events are segregated on the basis of their criticality and, are forwarded to their res...
Article
Full-text available
Due to the recent development in the field of Wireless Sensor Networks (WSNs), the Wireless Body Area Networks (WBANs) have become a major area of interest for the developers and researchers. Human body exhibits postural mobility due to which distance variation occurs and the status of connections amongst sensors change time to time. One of the maj...
Article
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This paper presents cooperative routing scheme to improve data reliability. The proposed protocol achieves its objective, however, at the cost of surplus energy consumption. Thus sink mobility is introduced to minimize the energy consumption cost of nodes as it directly collects data from the network nodes at minimized communication distance. We al...
Article
Full-text available
This paper embeds a bi-fold contribution for Underwater Wireless Sensor Networks 1 (UWSNs); performance analysis of incremental relaying in terms of outage and error probability, 2 and based on the analysis proposition of two new cooperative routing protocols. Subject to 3 the first contribution, a three step procedure is carried out; a system mode...
Article
In this paper, we propose two new routing protocols for Wireless Sensor Networks (WSNs). First one is Angular Multi-hop Distance based Clustering Network Transmission (AM-DisCNT) protocol which uses circular deployment of sensors (nodes) for uniform energy consumption in the network. The protocol operates in such a way that nodes with maximum resid...
Conference Paper
Full-text available
E-learning provides an effective way of learning. The purpose of e-learning is to facilitate learners by providing an efficient way using appropriate information and communication tool. This study explores the effects of e-learning on society including learners and trainees. Data is collected using questionnaire from students of Public Sector Unive...
Conference Paper
Full-text available
Logos sometimes also known as trademark have high importance in today's marketing world. Products, companies and different gaming leagues are often recognized by their respective logos. In this paper, an implementation system for logo detection and recognition in video stream is presented. Feature set using SIFT (Scale Invariant Feature Transform)...
Conference Paper
Task Analysis techniques models the human activity for the computer based systems. The role of task analysis is vital in the interface design. In recent years, various task analysis techniques have been explored by the researchers, which include Hierarchical Task Analysis (HTA), Cognitive Task Analysis (CTA), Link Analysis (LA), and Timeline Analys...
Conference Paper
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Human Computer Interaction (HCI) based interface modeling techniques can be employed in designing interactions. They provide complete mechanism for the design of an interactive interface in analysis and design phases of interface development. Interface design using these techniques incorporates usability and utility aspects. Object Action Interface...
Conference Paper
Multimedia information retrieval systems operate on multimedia information. Multimedia information exists in text, audio, image and video forms. Existing multimedia information retrieval systems do not satisfy multimedia information needs. Information needs are only satisfied when information is searched within all information modalities of a multi...
Conference Paper
Full-text available
Information retrieval systems that search within multimedia artifacts face inter-modality fusion problem. Fuzzy logic, sequential and linear combinational techniques are used for inter-modality fusion. We explore asymptotically that Fuzzy logic and sequential techniques have limitations. One major limitation is that they only address fusion of docu...
Conference Paper
There is a trend towards construction of multimedia digital information resources which may hold diverse data types in the form of image, graphics, audio, video, and text based retrieval artifacts or objects. WWW is a huge multimedia information resource. Existing search mechanisms available on WWW are mostly mono-modal. Multimedia information need...
Conference Paper
Full-text available
Grid environment has significant challenges due to diverse failures encountered during job execution. Computational grids provide the main execution platform for long running jobs. Such jobs require long commitment of grid resources. Therefore fault tolerance in such an environment cannot be ignored. Most of the grid middleware have either ignored...
Conference Paper
Computational Grids have the capability to provide the main execution platform for high performance distributed applications. Grid resources having heterogeneous architectures, being geographically distributed and interconnected via unreliable network media are extremely complex and prone to different kinds of errors, failures and faults. Grid is a...
Article
Full-text available
The Unified Modeling Language (UML) statechart diagram is used for modeling the dynamic behavior of a system. This paper describes an object-oriented (OO) approach to generate compact and efficient Java code from UML statechart diagrams. The states are represented as objects and all the behavior associated with a state is contained in one object. T...
Article
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Dedicated to my parents, wife Fariha and our children, Rameen and Sarmad for their love, encouragement and support The emergence of Unified Modeling Language (UML) as a standard for modeling systems has encouraged the use of automated software tools that facilitate the development process from analysis through coding. In UML, the static structure o...
Article
Full-text available
The Unified Modeling Language (UML) statechart diagram is used for modeling the dynamic aspects of systems. The UML statechart diagrams include many concepts that are not present in most popular programming languages, like Java or C++. There exists a gap between high level modeling language and a programming language. There is not a one-to-one mapp...
Article
Full-text available
The Unified Modeling Language (UML) statechart diagram is a powerful tool for specifying the dynamic behavior of reactive objects. Generating code from statechart diagrams is a challenging task due to its dynamic nature and because many of the statechart concepts are not supported by the object oriented programming languages. Most of the approaches...

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Projects (3)