Authors: Aaradhi Vaibhav, Chakraborty Debarun.

Journal: Higher Education, Skills and Work-based Learning.

Publication date: 2023

Publisher: Emerald Publishing

URL: Access Paper

Abstract:

This research intends to analyse the trend in educational technology (EdTech) over the last 20 years using systematic scientific mapping and bibliometric analysis and how it relates to the Indian context. Considering the anticipated growth in this field over the previous three years post-pandemic, an existing literature analysis is required. This study aims to map the existing intellectual structure in EdTech applications to extend the knowledge base further in this field. This study also intends to research how the Indian education sector compares in terms of the research output for the EdTech sector, considering the increased government focus on online learning as per the education policy in 2020. The study’s findings will pave the way for sustainable research that will be extended in the future. Design/methodology/approach: Bibliometric analysis is conducted on the manuscripts extracted from Web of Science databases for the last 20 years (from 2003 to 2023). This study uses a descriptive research approach for bibliometric analysis as, by nature, this is an exploratory investigation, and no physical or existing experiment can be performed on the quantification, characteristic or productivity of EdTech applications. VoS Viewer and R software are extensively considered for a detailed bibliometric analysis. Findings: E-learning, blended learning and distance education emerged as the most frequently used keywords. The results reveal that technology adoption, higher education, technology and modelling are the most researched topics in this field. Research limitations/implications: This research is limited to the last 20 years’ database obtained from the Web of Science database and limited to educational, management and operation databases only. Practical implications: The paper intends to analyse the global scenario of EdTech research and ensures that the paper will effectively connect with researchers, educators, policymakers and practitioners from different parts of the world. The results derived from the bibliometric analysis, cluster analysis and identification of key authors, journals and countries can contribute towards the improved contribution in this area. Originality/value: The paper discusses the research in EdTech over the last two decades and effectively tries to bridge the gap in global research. Integrating systematic scientific mapping and bibliometric analysis is an innovative way to assess the growth and impact of EdTech. Considering the post-pandemic scenario and the government’s emphasis on online learning, these are consistent with current developments. © 2023, Emerald Publishing Limited.

Authors: Aaradhi V., Gaidhani K.

Journal: 12th International Conference on Environment and Electrical Engineering, EEEIC 2013.

Publication date: 2013

Publisher: IEEE Poland Section.

URL: Access Paper

Abstract:

GIS and its allied subsystems are always expected to function and work with extremely high level of reliability. These substations contain several dielectric interfaces and combinational insulating medias. The GIS may be subject to Partial discharge activity may initiate in some conditions in the GIS modules considering its varied operating conditions thus an effective condition monitoring during the complete GIS life cycle is extremely critical. This phenomenon thus requires a special attention from the GIS manufacturers worldwide. This paper discusses the analysis of the various available techniques for PD detection. Also the various techniques available for the partial discharge detection in GIS like UHF, Acoustic and standard process as per IEC standards are discussed. A study for the partial discharge analysis techniques and its applications to different production stages Gas Insulated substations (GIS) from initial production to on-site testing has been conducted is also discussed. Finally this paper helps to conclude upon the most effective technique for PD detection considering the different parameters like cost, engineering and design parameters. This work is an extension to the author’s publication titled Partial discharge in gas insulated substations: Effects mitigation and analysis © 2013 IEEE.

Authors: Aaradhi V., Gaidhani K.

Journal: 2012 IEEE International Conference on Power System Technology, POWERCON 2012.

Publication date: 2012

Publisher: IEEE

URL: Access Paper

Abstract:

The increase in demand for electricity and the growing energy density in the metropolitan areas have made it necessary to extend the high voltage network right up to the consumer. Gas insulated substations provide a best solution to the above problem and have been functioning for more than 30 years around the world. SF6 gas used in GIS has excellent dielectric properties, current interruption properties and also high heat transfer capacity. Considering the increasing population and increasing power demand across the globe, a complete study of the various problems in the GIS systems has to be completed so as to ensure an un-interrupted electric power supply to the customers and increasing the GIS applications. This paper brings to light the various special problems involved in GIS like Particle infusion in GIS, Insulating spacers and their reliability, SF6 gas decomposition in GIS, VFTs. The paper also discusses the significance of these problems, analysis based upon a graphical approach and the effect of these problems on the Indian power system. © 2012 IEEE.