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Detecting plants on railway embankment. (2013)
Journal Article
Nyberg, R., Gupta, N. K., Yella, S., & Dougherty, M. (2013). Detecting plants on railway embankment. Journal of Software Engineering and Applications, 6, 8-12. https://doi.org/10.4236/jsea.2013.63b003

This paper investigates problems concerning vegetation along railways and proposes automatic means of detecting
ground vegetation. Digital images of railway embankments have been acquired and used for the purpose. The current
work mainly proposes t... Read More about Detecting plants on railway embankment..

Machine vision approach for automating vegetation detection on railway tracks. (2013)
Journal Article
Yella, S., Nyberg, R., Payvar, B., Dougherty, M., & Gupta, N. K. (2013). Machine vision approach for automating vegetation detection on railway tracks. Journal of Intelligent Systems, 22, 179-196. https://doi.org/10.1515/jisys-2013-0017

The presence of vegetation on railway tracks (amongst other issues) threatens track safety and longevity. However, vegetation inspections in Sweden (and elsewhere in the world) are currently being carried out manually. Manually inspecting vegetation... Read More about Machine vision approach for automating vegetation detection on railway tracks..

Ranking of the main criteria for selection procedures on major construction projects in Libya using the Delphi method. (2013)
Journal Article
Elsayah, O., Gupta, N. K., & Zhang, B. (2013). Ranking of the main criteria for selection procedures on major construction projects in Libya using the Delphi method. International Journal of Mechanical, Industrial Science and Engineering, 7, 715-719

The construction sector constitutes one of the most
important sectors in the economy of any country. Contractor selection is a critical decision that is undertaken by client organizations and is central to the success of any construction project. Co... Read More about Ranking of the main criteria for selection procedures on major construction projects in Libya using the Delphi method..

Condition monitoring of the strength and stability of civil structures using thick film ceramic sensors (2013)
Journal Article
Jabir, S. A. A., & Gupta, N. K. (2013). Condition monitoring of the strength and stability of civil structures using thick film ceramic sensors. Measurement : journal of the International Measurement Confederation, 46, 2223-2231. https://doi.org/10.1016/j.measurement.2013.03.018

Structural Health Monitoring (SHM) is about the mechanical strength and stability of a structure. The methods used to reveal and quantify the structure quality could be different in nature. Strain change is, however, the common structural parameter i... Read More about Condition monitoring of the strength and stability of civil structures using thick film ceramic sensors.

Thick-Film ceramic strain sensors for structural health monitoring (2011)
Journal Article
Jabir, S. A. A., & Gupta, N. K. (2011). Thick-Film ceramic strain sensors for structural health monitoring. IEEE Transactions on Instrumentation and Measurement, 60, 3669-3676. https://doi.org/10.1109/TIM.2011.2138310

Structural Health Monitoring represents one of the primary field applications for new sensor technologies. Different kinds of sensors to monitor stability anomalies of civil structures are deployed on different kinds of building materials. Observatio... Read More about Thick-Film ceramic strain sensors for structural health monitoring.

MRI suites and residual design risk from static magnetic field (2010)
Journal Article
Price, T., Wamuziri, S., & Gupta, N. (2010). MRI suites and residual design risk from static magnetic field. Proceedings of the ICE - Management, Procurement and Law, 163(1), 7-15. https://doi.org/10.1680/mpal.2010.163.1.7

Since the inception of the UK Construction (Design and Management) Regulations 1994 through to the 2007 Construction (Design and Management) Regulations a duty has been imposed upon the client of premises where a notifiable project has been carried... Read More about MRI suites and residual design risk from static magnetic field.

Condition monitoring of wooden railway sleepers (2009)
Journal Article
Yella, S., Dougherty, M., & Gupta, N. K. (2009). Condition monitoring of wooden railway sleepers. Transportation Research Part C : Emerging Technologies, 17, 38-55. https://doi.org/10.1016/j.trc.2008.06.002

Wooden railway sleeper inspections in Sweden are currently performed manually by a human operator; such inspections are to large extent based on visual analysis. In this paper a machine vision based approach has been considered to emulate the visual... Read More about Condition monitoring of wooden railway sleepers.

Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer (2008)
Journal Article
McNeill, N., Gupta, N. K., Burrow, S. G., Holliday, D., & Mellor, P. H. (2008). Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer. IEEE Transactions on Power Electronics, 23, 591-599. https://doi.org/10.1109/TPEL.2007.915662

This paper investigates the application of reset voltage feedback for reducing errors due to droop in the signal derived from a current transformer sensing unidirectional current pulses in switched-mode power converter applications. Droop is minimise... Read More about Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer.

Assessment of the error in the average current sensed by the unidirectional current pulse transformer (2008)
Journal Article
McNeill, N., & Gupta, N. K. (2008). Assessment of the error in the average current sensed by the unidirectional current pulse transformer. IET Circuits, Devices and Systems, 2, 265. https://doi.org/10.1049/iet-cds%3A20070226

Advantages of using a current transformer (CT) for current sensing in switched mode power converters are that galvanic isolation is inherent, losses are low, the bandwidth is high and a high-amplitude output signal may be obtained. However, 'droop' o... Read More about Assessment of the error in the average current sensed by the unidirectional current pulse transformer.

Comparison of pattern recognition techniques for the classification of impact acoustic emissions. (2007)
Journal Article
Yella, S., Gupta, N. K., & Dougherty, M. S. (2007). Comparison of pattern recognition techniques for the classification of impact acoustic emissions. Transportation Research Part C : Emerging Technologies, 15, 345-360. https://doi.org/10.1016/j.trc.2007.05.004

Current day condition monitoring applications involving wood are mostly carried out through visual inspection and if necessary some impact acoustic examination is carried out. These inspections are mainly done intuitively by skilled personnel. In thi... Read More about Comparison of pattern recognition techniques for the classification of impact acoustic emissions..

Active current transformer circuits for low distortion sensing in switched mode power converters. (2004)
Journal Article
McNeill, N., Gupta, N. K., & Armstrong, W. (2004). Active current transformer circuits for low distortion sensing in switched mode power converters. IEEE Transactions on Power Electronics, 19, 908-917. https://doi.org/10.1109/TPEL.2004.830075

The current transformer (CT) is frequently used for sensing applications in switched mode power converters. Advantages are that galvanic isolation is inherently incorporated, bandwidth is high, losses are low and that a high-amplitude output signal m... Read More about Active current transformer circuits for low distortion sensing in switched mode power converters..

Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction (2004)
Journal Article
Wilson, J. G., & Gupta, N. K. (2004). Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction. Measurement : journal of the International Measurement Confederation, 35(3), 243-250. https://doi.org/10.1016/j.measurement.2003.11.002

The need for accelerated curing of concrete in precast civil engineering components is discussed, and the techniques available to achieve this are presented, with particular emphasis on the use of direct electrical conduction.

The principles of th... Read More about Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction.

Design of a Smart and Intelligent Energy Efficient Controller for a Bathroom System
Presentation / Conference Contribution
Oye, T. K., Gupta, N., Goh, K., & Oye, T. T. (2020, September). Design of a Smart and Intelligent Energy Efficient Controller for a Bathroom System. Presented at 2020 9th International Conference on Renewable Energy Research and Application (ICRERA), Glasgow, United Kingdom

One of the major issues facing the world in the 21 st century is climate change. However, sustainability has become a crucial concept to combat extreme consumption of environmental resources. The bathroom has been estimated to be the principal user o... Read More about Design of a Smart and Intelligent Energy Efficient Controller for a Bathroom System.

Development of Optimized Smart Indoor Control for Renewable Air-Conditioning
Presentation / Conference Contribution
Oye, T. T., Gupta, N., Goh, K., & Oye, T. K. (2020, September). Development of Optimized Smart Indoor Control for Renewable Air-Conditioning. Presented at 2020 9th International Conference on Renewable Energy Research and Application (ICRERA), Glasgow, United Kingdom

This paper presents the modelling of smart indoor control for renewable air-conditioning using fuzzy logic control and proportional-integral-derivatives for improved thermal comfort. The proposed control techniques are systematically designed and tun... Read More about Development of Optimized Smart Indoor Control for Renewable Air-Conditioning.

Measurement, Modeling and Simulation of Photovoltaic Degradation Rates
Presentation / Conference Contribution
Honnurvali, M. S., Gupta, N., Goh, K., & umar, T. (2020, January). Measurement, Modeling and Simulation of Photovoltaic Degradation Rates. Presented at MoSICom: International conference on Modelling, Simulation and Intelligent Computing, Dubai, UAE

Photovoltaic degradation rates play a vital role in visualizing and analyzing the performance of the PV modules over the long run. A site survey is conducted to calculate PV degradation rates. The results have shown that for the first three years sin... Read More about Measurement, Modeling and Simulation of Photovoltaic Degradation Rates.

Renewable energy resources and technologies applicable to Sri Lanka towards a 100% RE future
Presentation / Conference Contribution
Fernando, W., Gupta, N., Ozveren, C. S., & Givaki, K. (2019, October). Renewable energy resources and technologies applicable to Sri Lanka towards a 100% RE future. Presented at 8th Renewable Power Generation Conference (RPG 2019), Shanghai, China

The combustion of fossil fuels primarily provides the energy supply in Sri Lanka. The energy generation in Sri Lanka is primarily realized by the combustion of thermal energy such as diesel and coal. The second energy generation source is Hydroelectr... Read More about Renewable energy resources and technologies applicable to Sri Lanka towards a 100% RE future.

Can Future Smart Cities Powered by 100% Renewables and Made Cyber Secured-A Analytical Approach
Presentation / Conference Contribution
Shaik Honnurvali, M., Gupta, N., Goh, K., Umar, T., Kabbani, A., & Nazecma, N. (2019, January). Can Future Smart Cities Powered by 100% Renewables and Made Cyber Secured-A Analytical Approach. Presented at 2019 IEEE 12th International Conference on Global Security, Safety and Sustainability (ICGS3), London, United Kingdom

A smart city main objective is to provide a better living for the citizens by managing the resources both in a sustainable and cost-effective way to benefit the people at maximum., One of the key building factors of future smart cities is to generate... Read More about Can Future Smart Cities Powered by 100% Renewables and Made Cyber Secured-A Analytical Approach.

Feasibility Study of Small Scale Battery Storage Systems Integrated with Renewable Generation Technologies for Sri Lankan Domestic Applications
Presentation / Conference Contribution
Fernando, W., Gupta, N., Kamyab, G., & Suheyl, C. O. (2019, September). Feasibility Study of Small Scale Battery Storage Systems Integrated with Renewable Generation Technologies for Sri Lankan Domestic Applications. Presented at 2019 54th International Universities Power Engineering Conference (UPEC), Bucharest, Romania

The purpose of energy storage technologies is to ultimately increase the efficiency of renewable energy generation methods and systems and decrease the global CO 2 emissions to tackle the Sri Lanka government's sustainability targets. This research a... Read More about Feasibility Study of Small Scale Battery Storage Systems Integrated with Renewable Generation Technologies for Sri Lankan Domestic Applications.

PV electrical parameters degradation analysis-Oman perspective
Presentation / Conference Contribution
Honnurvali, M. S., & Gupta, N. (2017, March). PV electrical parameters degradation analysis-Oman perspective. Presented at 2017 8th International Renewable Energy Congress (IREC), Amman, Jordan

Recent interests in exploring the potential of renewable energy possibilities and readiness in sultanate of Oman has showed that it can engage renewable energy technologies, such as solar, wind power and various hybrid power models to mitigate fossil... Read More about PV electrical parameters degradation analysis-Oman perspective.