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All Journal Bulletin of Electrical Engineering and Informatics Indatu Journal of Management and Accounting
Kumar, Dhirendra
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Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Social Sciences Other

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ESG and Firm Value Linkage: A Case Study in the Automotive Industry Ray, Samrat; Kumar, Dhirendra; Roy, Sumitra; Verma, Anil
Indatu Journal of Management and Accounting Vol. 2 No. 1 (2024): June 2024
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ijma.v2i1.154

Abstract

Environmental, social, and governance (ESG) performance and firm value are under scrutiny in this study, examining the impact of ESG factors on financial metrics. A survey was conducted, and the questionnaire was distributed to stakeholders within the automotive industry in India. Statistical analyses, including regression and correlation techniques, were employed to ascertain the connections between firm value and ESG performance. Strong correlations between ESG performance and financial indicators were observed. The findings underscore the significance of social responsibility practices in enhancing a company's trustworthiness, fostering trust among stakeholders, and maintaining long-term competitiveness. Furthermore, the study illustrates the integration of environmentally friendly business methods within the automotive industry. It emphasizes the importance of aligning ESG practices and social responsibility objectives with financial performance goals.
Graphene based nano-antenna for wireless communication systems at terahertz band Singh, Raj Kumar; Mamta, Kumari; Kumar, Dhirendra
Bulletin of Electrical Engineering and Informatics Vol 14, No 2: April 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v14i2.8727

Abstract

The need for nano-antennas with decreased size and the capacity to operate at mid-infrared frequencies to enable adequate coverage of signal is being investigated. In this paper, we present graphene-based nano-antenna and analysed at the resonating frequency 33 THz using gallium arsenide material as a substrate having dielectric constant 11.35 and a loss tangent of 5.6×10-4 for terahertz (THz) frequency. The height of substrate is optimized to 108 nm and in-plane dimension being 1,700×1,400 nm. Graphene was used as a rectangular patch with dimension 850×450×5 nm and ground having chemical potential=1.4 eV, and relaxation time=1 ps, to achieve high gain and bandwidth. Impact of slot width variation on the antenna parameters have been reported in terms of reflection coefficient (S11), voltage standing wave ratio (VSWR), radiation pattern and gain. Reported beam width being 90.4° for both electric and magnetic planes. Proposed antenna achieved a return loss of -18.38 dB, VSWR less than 2, indicating good match with load, highest gain of 8.8 dBi and bandwidth of 500 GHz at the target resonance frequency making it suitable for 5G/6G mm wave wireless communication.
Co-Authors Mamta, Kumari Ray, Samrat Roy, Sumitra Singh, Raj Kumar Verma, Anil