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A case study of PV output power degradation rates in Oman. (2018)
Journal Article
Honnurvali, M., Gupta, N., Goh, K., Umar, T., & Nazeema, N. (2019). A case study of PV output power degradation rates in Oman. IET Renewable Power Generation, 13(2), 352-360. https://doi.org/10.1049/iet-rpg.2018.5457

To meet the increase in peak electricity demand and to reduce fossil fuel emissions in Oman and as an initiative taken by the government, by 2030, 15% (3000 MW) of the total energy mix (20,000 MW) should be generated from renewable energy resources l... Read More about A case study of PV output power degradation rates in Oman..

Field Based Photovoltaic Power Degradation Rates In Oman-Case Study (2018)
Presentation / Conference Contribution
Shaik, M., Gupta, N., & Goh, K. (2018). Field Based Photovoltaic Power Degradation Rates In Oman-Case Study. In World Congress on Sustainable Technologies (WCST-2017)

Due to increase in demand for electricity usage all around the GCC there has been emphasizing on the usage of alternative sources of energy i.e. using solar, wind and ocean etc. on the other side accurate prediction of power delivery is crucial for e... Read More about Field Based Photovoltaic Power Degradation Rates In Oman-Case Study.

Study of Photovoltaics (PV) Performance Degradation Analysis in Oman (2017)
Journal Article
Shaik, M., Gupta, N., Goh, K., Umar, T., & Nazeema, N. (2017). Study of Photovoltaics (PV) Performance Degradation Analysis in Oman. International Journal of Sustainable Energy Development, 6(2), 334-343. https://doi.org/10.20533/ijsed.2046.3707.2017.0043

The demand for electricity usage is increasing all around the globe. As an alternative and clean source to produce electricity there has been an emphasis on the usage of renewable energies. Sultanate of Oman has also taken an initiative by 2030 that... Read More about Study of Photovoltaics (PV) Performance Degradation Analysis in Oman.

The Electricity Infrastructure in Sri Lanka Then, Now and Hereafter (2017)
Presentation / Conference Contribution
Fernando, W., Gupta, N., & Özveren, C. S. (2017, August). The Electricity Infrastructure in Sri Lanka Then, Now and Hereafter. Presented at 52nd International Universities Power Engineering Conference (UPEC), Heraklion, Greece

This paper will initially describe the electricity infrastructure in Sri Lanka, covering history, current status, and future directions. Secondly, it will explore the costs of electricity generated by different sources including initial capital, retu... Read More about The Electricity Infrastructure in Sri Lanka Then, Now and Hereafter.

PV electrical parameters degradation analysis-Oman perspective (2017)
Presentation / Conference Contribution
Honnurvali, M. S., & Gupta, N. (2017). PV electrical parameters degradation analysis-Oman perspective. In 2017 8th International Renewable Energy Congress (IREC). https://doi.org/10.1109/irec.2017.7926000

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.

Methods for differential protection of Scott transformers (2017)
Journal Article
Sorrentino, E., Gupta, N., & Oliveros, E. (2017). Methods for differential protection of Scott transformers. Electric Power Systems Research, 147, 55-61. https://doi.org/10.1016/j.epsr.2017.02.018

This article describes different methods for the differential protection of Scott transformers, which are based on: (a) single-phase relays, (b) 3-phase relays for two-winding transformers, (c) 3-phase relays for multi-winding transformers, (d) speci... Read More about Methods for differential protection of Scott transformers.

Evaluating the cost of disruption in office retrofit building projects (2016)
Presentation / Conference Contribution
Tokede, O., Gupta, N., & Wamuziri, S. (2016). Evaluating the cost of disruption in office retrofit building projects. In Proceedings of 10th ICEC World Congress & Council Meeting (1086-1098)

The purpose of this paper is to evaluate the cost of disruption in office retrofit building projects. This work adopts a positivist approach and evaluates the cost of disruption based on the estimated level of disruptiveness of retrofit technolog... Read More about Evaluating the cost of disruption in office retrofit building projects.

Assessment of efficiency of air abrasive cleaning on masonry stones and bricks using greyscale Imaging analysis. (2015)
Presentation / Conference Contribution
Reza, H., Zhang, B., & Gupta, N. K. (2015, April). Assessment of efficiency of air abrasive cleaning on masonry stones and bricks using greyscale Imaging analysis. Presented at Second Intl. Conf. on Advances in Civil, Structural and Construction Engineering

Advanced greyscale imaging analysis was conducted using Adobe Photoshop 6 on the surfaces of masonry stones and clay bricks, taken from old buildings, to accurately assess the efficiency of building cleaning. Five commonly used masonry stones and... Read More about Assessment of efficiency of air abrasive cleaning on masonry stones and bricks using greyscale Imaging analysis..

Inter-rater reliability in determining the types of vegetation on railway trackbeds (2015)
Presentation / Conference Contribution
Nyberg, R. G., Yella, S., Gupta, N. K., & Dougherty, M. (2015, November). Inter-rater reliability in determining the types of vegetation on railway trackbeds. Presented at International Conference on Web Information Systems Engineering, Springer International Publishing

Vegetation growing on railway trackbeds and embankments can present several potential problems. Consequently, such vegetation is controlled through various maintenance procedures. In order to investigate the extent of maintenance needed, one of the f... Read More about Inter-rater reliability in determining the types of vegetation on railway trackbeds.

Reliability of manual assessments in determining the types of vegetation on railway tracks (2015)
Presentation / Conference Contribution
Nyberg, R. G., Yella, S., Gupta, N. K., & Dougherty, M. (2015, November). Reliability of manual assessments in determining the types of vegetation on railway tracks. Presented at Web Information Systems Engineering – WISE 2015, Miami, FL, USA

Current day vegetation assessments within railway maintenance are (to a large extent) carried out manually. This study has investigated the reliability of such manual assessments by taking three non-domain experts into account. Thirty-five track imag... Read More about Reliability of manual assessments in determining the types of vegetation on railway tracks.

Developing a fuzzy new -generation whole-life cost model for medium-sized office buildings. (2014)
Presentation / Conference Contribution
Tokede, O. O., D'Amico, B., Gupta, N. K., & Wamuziri, S. (2014). Developing a fuzzy new -generation whole-life cost model for medium-sized office buildings.

Purpose of this paper The purpose of this paper is to explore the investment appraisal aspects of the new-generation whole-life cost (NWLC) model and develops a fuzzy new-generation whole-life cost model for 25 simulated configurations of a steel-ty... Read More about Developing a fuzzy new -generation whole-life cost model for medium-sized office buildings..

Machine Vision For Condition Monitoring Vegetation On Railway Embankments (2014)
Presentation / Conference Contribution
Nyberg, R., Gupta, N., Yella, S., & Dougherty, M. (2014, September). Machine Vision For Condition Monitoring Vegetation On Railway Embankments. Presented at 6th IET Conference on Railway Condition Monitoring, RCM

National Railway Administration in Northern Europe do not employ systematic procedures in monitoring the current state of vegetation to form the basis of maintenance decision making. Current day vegetation maintenance is largely based on human visual... Read More about Machine Vision For Condition Monitoring Vegetation On Railway Embankments.

Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks Part 1 Physical Testing (2014)
Journal Article
Zhang, B., Reza, H., Gu, S., & Gupta, N. (2014). Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks Part 1 Physical Testing. Journal of Physical Science and Application, 4(4), 207-222. https://doi.org/10.17265/2159-5348/2014.04.001

This series of study focused on analysing and assessing the changes of the physical and chemical characteristics of the surfaces of the masonrystones and bricks during the sandblasting cleaning process by conducting various physical and chemical test... Read More about Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks Part 1 Physical Testing.

Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks During Building Cleaning Part2 Chemical Testing (2014)
Journal Article
Zhang, B., Reza, H., Gu, S., & Gupta, N. (2014). Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks During Building Cleaning Part2 Chemical Testing. Journal of Physical Science and Application, 4(4), 223-235. https://doi.org/10.17265/2159-5348/2014.04.002

This series of study focused on analysing and assessing the changes of the physical and chemical characteristics of the surfaces of the masonrystones and bricks during the sandblasting cleaning process by conducting various physical and chemical test... Read More about Investigation Of Physical And Chemical Characteristics Of Masonry Stones And Bricks During Building Cleaning Part2 Chemical Testing.

Factors influencing municipal construction project performance (2014)
Journal Article
Alsulamy, S., Gupta, N., & Sloan, B. (2014). Factors influencing municipal construction project performance. Proceedings of the ICE - Municipal Engineer, 167(2), 108-117. https://doi.org/10.1680/muen.13.00029

There is a strong correlation between practised critical success factors and the efficiency of performance measurement systems in delivering satisfactory service. Construction project success is affected by multiple diminution factors, including cri... Read More about Factors influencing municipal construction project performance.

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.