PEDOT-Doped Mesoporous Nanocarbon Electrodes for High Capacitive Aqueous Symmetric Supercapacitors
carbon matrix; carbon nanoparticles; electrode fabrication; FESEM/ATR-FTIR/XRD/BET/BJH/CV/GCD/EIS; mesopores; nanocomposites; onion peels pyrolysis; poly(3,4-ethylenedioxythiophene); supercapacitors
Poly(3,4-ethylenedioxythiophene) (PEDOT) and PEDOT-functionalized carbon nanoparticles (f-CNPs) were synthesized by in situ chemical oxidative polymerization and pyrolysis methods. f-CNP-PEDOT nanocomposites were prepared by varying the concentration of PEDOT from 1 to 20% by weight (i.e., 1, 2.5, 5, 10, and 20 wt%). Several characterization techniques, such as field-emission scanning electron microscopy (FESEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), X-ray diffraction (XRD), N2 BrunauerEmmettTeller (BET) and BarrettJoynerHalenda (BJH) analyses, as well as cyclic voltammetry (CV), galvanostatic charge discharge (GCD), and electrochemical impedance spectroscopy (EIS), were applied to investigate the morphology, the crystalline structure, the N2 adsorption/desorption capability, as well as the electrochemical properties of these new synthesized nanocomposite materials. FESEM analysis showed that these nanocomposites have defined porous structures, and BET surface area analysis showed that the standalone f-CNP exhibited the largest surface area of 801.6 m2/g, whereas the f-CNP-PEDOT with 20 wt% exhibited the smallest surface area of 116 m2/g. The BJH method showed that the nanocomposites were predominantly mesoporous. CV, GCD, and EIS measurements showed that f-CNP functionalized with 5 wt% PEDOT had a higher capacitive performance compared to the individual f-CNPs and PEDOT constituents, exhibiting an extraordinary specific capacitance of 258.7 F/g, at a current density of 0.25 A/g, due to the combined advantage of enhanced electrochemical activity induced by PEDOT doping, and highly developed porosity of f-CNPs. Symmetric aqueous supercapacitor devices were fabricated using the optimized f-CNP-PEDOT doped with 5 wt% of PEDOT as active material, exhibiting a high capacitance of 96.7 F/g at 1.4 V, holding practically their full charge, after 10,000 chargedischarge cycles at 2 A/g, thus providing the highest electrical electrodes performance. Hereafter, this work paves the way for the potential use of f-CNP-PEDOT nanocomposites in the development of high-energy-density supercapacitors. 2024 by the authors.
Taj M.; Bhat V.S.; Sriram G.; Kurkuri M.; Manohara S.R.; Padova P.D.; Hegde G.
Multidisciplinary Digital Publishing Institute (MDPI)
All Open Access; Gold Open Access; Green Open Access
https://doi.org/10.3390/nano14141222 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199858864&doi=10.3390%2fnano14141222&partnerID=40&md5=10c368529bba53f62c897f960ff4e86b
Taj M., Nano-Composites and Materials Research Laboratory, Department of Physics, Siddaganga Institute of Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Karnataka, Tumakuru, 572103, India, Department of Physics, HKBK College of Engineering, Karnataka, Bengaluru, 560045, India; Bhat V.S., Department of Materials Science, Mangalore University, Karnataka, Mangalagangotri, 574199, India; Sriram G., School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea; Kurkuri M., Centre for Research in Functional Materials (CRFM), Jain (Deemedtobe University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Manohara S.R., Nano-Composites and Materials Research Laboratory, Department of Physics, Siddaganga Institute of Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Karnataka, Tumakuru, 572103, India; Padova P.D., Consiglio Nazionale delle Ricerche, Istituto di Struttura della Materia (CNRISM), Via Fosso del Cavaliere, 100, Rome, 00133, Italy, Istituto Nazionale di Fisica NucleareLaboratori Nazionali di Frascati (INFNLNF), Via E. Fermi, 54, Frascati, 00040, Italy; Hegde G., Centre for Advanced Research and Development, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India, Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India
Synergistic Effect of Chemical and Physical Treatments on Azolla pinnata for Cadmium Ions Removal from Synthetic Wastewater Systems
Azolla pinnata; cadmium chelation; chemi-cal and physical modifications; phytoremediation; surface properties
Azolla pinnata, an aquatic fern has been utilized as an effective biofiltering and ad-sorbent agent to complement many convention-al treatment methods for the removal of environmental pollutants. This study is designed to develop an effective regime to treat metal pollutants of industrial and urban waste discharge using a novel strategy involving Azolla pinnata. In the present study, cell surface modification by physical treatments that include heating (muffle furnace), and mechanical waves (ultrasonication) and chemical treatments as sulphuric acid and ethanol were employed to enhance the adsorption of metal pollutants. Factors such as biosorbent dose, contact time, initial metal ion concentration, temperature, and solution pH were optimised in batch mode. The point of zero charge of the adsorbent was determined to be at 5.85 pH. The results of surface morphology, elemental analysis, crystallinity, recorded through SEM, FTIR and XRD confirmed the ad-sorptive properties in both modified and unmod-ified biomass. The intensity peaks linked to O-H, C-H, C-N, N-H and C=O stretching bands was intense in the treated A. pinnata groups indicat-ing the induction of the active groups. Out of the two chemical pre-treatments, the batch ad-sorption experiment with ethanol found to che-late Cd+2 metal ions to a higher extent (94.36%) in contrast to the results obtained from H2SO4 treated biomass. Whereas, the physical treat-ments exhibited the strong adsorption (83.28 and 96.920.55%) for ultrasonicated and muf-fle furnace pre-treated biomass respectively for the dosage of 0.25g. The adsorption efficiency of physically modified sorbent revealed the cent percent removal of Cd+2 ions from the aqueous phase with the dosage of 1.0g in 15min of con-tact time which is due to the incorporation of new binding sites. Moreover, these results proved that the highest rate of cadmium adsorption onto A. pinnata is in result of the modifications caused onto surface structure, porosity and the addition of functional groups on the surface of the treated biomass. 2024, Curr. Trends Biotechnol. Pharm. All rights reserved.
Current Trends in Biotechnology and Pharmacy, Vol-18, No. 3, pp. 1881-1896.
Association of Biotechnology and Pharmacy
All Open Access; Hybrid Gold Open Access
https://doi.org/10.5530/ctbp.2024.3.34 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85211353773&doi=10.5530%2fctbp.2024.3.34&partnerID=40&md5=d446362f66eb41f55fd430afd0bfbf63
Rajalakshmi K.S.V., Department of Lifesciences, CHRIST (Deemed to be University), Bangalore, 560029, India; Paari K.A., Department of Lifesciences, CHRIST (Deemed to be University), Bangalore, 560029, India
Classroom mathematics learning: Association of joy of learning and school connectedness among high school students in India
India; mathematics anxiety; mediation analysis; school connectedness; students
Mathematics learning experiences can influence the overall academic and socio-emotional development of a child. The present study investigates the mediating effect of mathematics anxiety and emotional engagement on the relationships between teacherstudent interaction, the joy of learning, and school connectedness. Two mediation models were tested for the dependent variables: the joy of learning and school connectedness, using Hayes' process macro in SPSS on a sample of 774 eighth-standard students from Indian schools. The study's results indicate the presence of a serial mediation effect on the relationship between teacherstudent interaction and joy of learning, teacherstudent interaction, and school connectedness through mathematics anxiety and emotional engagement. The study emphasized the role of mathematics learning within the overall framework of joy of learning and school connectedness.. 2024 Wiley Periodicals LLC.
Psychology in the Schools, Vol-61, No. 8, pp. 3087-3101.
https://doi.org/10.1002/pits.23207 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85191199624&doi=10.1002%2fpits.23207&partnerID=40&md5=15e159e2fe5c7e9ef9d270cc74379e5a
Sasidharan S., School of Education, Christ University, Bengaluru, India; Kareem J., School of Education, Christ University, Bengaluru, India
Effectiveness of museum visits: attitude and learning of history
Attitude; Field-trip; Learning; Museum visit; Pedagogies
This quasi-experimental study investigates the effectiveness of museum visit on 6th-grade students attitude towards and learning of history. The study engaged 120 students in the museum visit intervention. That includes, 60 students in the experimental group and 60 students in the control group. The study design included pre-test and post-test measures. The study administered an achievement test and an attitude scale toward history. The study analyzed the data using the repeated measures analysis of variance (ANOVA) statistical test. The studys result revealed that the experimental group outperformed the control group in achievement test scores of histories. The museum-visit group expressed a more positive attitude towards history learning and engagement. These findings underscore museums potential as experiential learning environment, offering knowledge and fostering a positive attitude towards history. The study recommends the future researchers to conduct similar empirical studies in science subjects as a venue for place-based pedagogy in the Indian context. 2024, Institute of Advanced Engineering and Science. All rights reserved.
International Journal of Evaluation and Research in Education , Vol-13, No. 4, pp. 2163-2169.
Institute of Advanced Engineering and Science
https://doi.org/10.11591/ijere.v13i4.28734 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85196798633&doi=10.11591%2fijere.v13i4.28734&partnerID=40&md5=1ea231be74e566ba25b0a96db61dbea5
Sahani C., Department of Education, Faculty of Education, Christ University, Bangalore, India; Prakasha G.S., Department of Education, Faculty of Education, Christ University, Bangalore, India
A Stochastic Method for Optimizing Portfolios Using a Combined Monte Carlo and Markowitz Model: Approach on Python
Correlation; Efficient Frontier; Markowitz Monte Carlo; Pharma index; Return; Risk
The main of the study is to comprehend how the mean variance efficient frontier method may be used in conjunction with Markowitz portfolio theory to produce an optimal portfolio. The study uses daily observations 8 pharma companies closing price namely Auropharma, Granules, Glaxo, Lauruslabs, Pfizer, Sanofi and Torntpharma. Further, Nifty pharma index is considered as benchmark index to check the performance of the chosen companies. The study chosen the reference period from 2020 to 2023 and required data has been extracted from the National Stock Exchange (NSE). This research is based on implementing a stochastic method for efficient portfolio optimisation employing a blended Monte Carlo and Markowitz model. In order to forecast the price of these indices in the future and to determine the likelihood of profit or loss while investing in a portfolio of stocks representing the aforementioned indices, the study also uses Monte Carlo simulation. The study involves two algorithms, namely the deterministic optimisation algorithm, which uses Markowitz Portfolio Theory, and the probabilistic optimisation algorithm, which uses Monte Carlo simulation. The study employed correlation matrix to find the exist relationship between the chosen companies and benchmark index. Also, expected return and volatility has been identified with the help of standard deviation using Python. The study found that the NIFTY Pharma index offers a higher return of 14.35. In addition to this, NIFTY Pharma portfolio's volatility is considerably higher. The study concludes that the NIFTY pharma portfolio is more suitable for those investors who have an appetite for risk. 2024 R. Mallieswari et al., published by Sciendo.
Mallieswari R.; Palanisamy V.; Senthilnathan A.T.; Gurumurthy S.; Joshua Selvakumar J.; Pachiyappan S.
ECONOMICS - Innovative and Economics Research Journal, Vol-12, No. 2, pp. 113-127.
https://doi.org/10.2478/eoik-2024-0014 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85200455572&doi=10.2478%2feoik-2024-0014&partnerID=40&md5=ccfa624923bf24565f8d9ffdf82c225e
Mallieswari R., M S Ramaiah Institute of Management, Karnataka, Bengaluru, India; Palanisamy V., M S Ramaiah Institute of Management, Karnataka, Bengaluru, India; Senthilnathan A.T., Sri Ramakrishna Engineering College, Tamil Nadu, Coimbatore, India; Gurumurthy S., Kumaraguru College of Liberal Arts and Science, Tamil Nadu, Coimbatore, India; Joshua Selvakumar J., CHRIST University, Karnataka, Bangalore, India; Pachiyappan S., CHRIST University, Karnataka, Bangalore, India
Organizational contributions to emergency preparedness and response in Varanasi: A comprehensive analysis
Disaster preparedness; Emergency response strategies; Organizational role; Varanasi
India's unique geographical diversity and status as the world's most populous nation make it exceptionally susceptible to a wide array of hazards, both natural and human-induced. This vulnerability is further compounded by the intersection of diverse disasters and the dense population, leading to significant human and material losses. In response to these challenges, effective emergency preparedness plans are indispensable, requiring meticulous risk assessments, strategic resource allocation, capacity building initiatives, and active engagement of community-oriented organizations. Continuous monitoring and adaptation are essential for bolstering resilience and safeguarding socio-economic stability. Furthermore, the examination of developmental and disaster-specific organizations' roles in preparedness and response necessitates a systematic shift towards proactive paradigms, fostering an anticipatory culture rather than a reactive one. This study aims to dissect the intricate web of organizational efforts crucial for emergency preparedness in Varanasi, one of the world's oldest cities. By delving into these critical mechanisms, our goal is to enhance collective readiness against potential emergencies, safeguarding the city's rich heritage and its inhabitants. Through a mixed-method approach, this research illuminates the multifaceted involvement of organizations across various sectors, unraveling a complex tapestry of challenges that impede practical disaster preparedness. We scrutinize the coordination among governmental and non-governmental entities, funding dynamics, and grassroots alliances, revealing untapped resources for disaster resilience. Additionally, we analyze the strategies adopted by the national emergency preparedness and response force, highlighting both successes and shortcomings. Moreover, this study underscores the unique competencies of individuals involved in disaster preparedness, while identifying structural and functional gaps within organizational frameworks. Conversely, non-profit organizations face distinct challenges, including fundraising constraints and donor-imposed limitations, hindering their ability to develop comprehensive emergency preparedness and response capacities compared to public and private entities. In summary, this research serves as a comprehensive exploration of organizational dynamics in emergency preparedness within Varanasi, offering valuable insights into the complexities of disaster management efforts. By addressing these challenges, we aim to pave the way for more effective and inclusive disaster preparedness strategies, ultimately enhancing the resilience of Varanasi and similar communities globally. 2024 Elsevier Ltd
Kumar A.; Prasad J.B.; Mani S.K.; Tiwana A.S.
International Journal of Disaster Risk Reduction, Vol-110
https://doi.org/10.1016/j.ijdrr.2024.104654 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198128314&doi=10.1016%2fj.ijdrr.2024.104654&partnerID=40&md5=856fb6b753014d43b9ce2860729bc2d4
Kumar A., Centre For Electoral Management Studies, School of Development Studies, Tata Institute of Social Sciences, Mumbai, India; Prasad J.B., Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India; Mani S.K., Department of Civil Engineering, Christ University, Bengaluru, India; Tiwana A.S., Department of Geography, Mata Gujri College (Autonomous), Fatehgarh Sahib, Punjab, India, School of Development Studies, Tata Institute of Social Sciences, Mumbai, India
Titanium based dual behavioral magnetic nanocomposite for ipso-hydroxylation and selective oxidation reactions under white light
Heterogeneous catalysis; Ipso-hydroxylation; Magnetic nanocatalyst; Selective oxidation reaction
A new titanium-based magnetic nanocomposite was prepared using facile method. The characterization of the prepared nanocomposite by various analytical techniques confirmed the successful coating of TiO2 on to the magnetic surface. A vital role of the prepared nanocomposite as photocatalyst for the selective oxidation of benzyl alcohols to their corresponding aldehydes and ipso-hydroxylation of aryl boronic acids under the illumination of tailor-made set up employing white light was demonstrated. The nanocatalyst was recycled and it retained excellent catalytic activity towards both the reactions upto several cycles demonstrating the excellent heterogeneous nature and possible application in the industries ensuring the sustainability. 2024 Elsevier B.V.
https://doi.org/10.1016/j.mcat.2024.114381 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198602021&doi=10.1016%2fj.mcat.2024.114381&partnerID=40&md5=eb5577f6a96d7256bf80e399ba1559c0
Hegde S., Department of Chemistry, Christ University, Hosur road, Bangalore, 560029, India; Mago A., Department of Chemistry, Christ University, Hosur road, Bangalore, 560029, India; Patel R., Department of Physics and Electronics, Christ University, Hosur road, Bangalore, 560029, India; Nizam A., Department of Chemistry, Christ University, Hosur road, Bangalore, 560029, India
Health Care Still a Costly Affair: Covariates of Out-of-Pocket Expenditure on Health Care in India with Special Reference to Empowered Action Group States
covariates of out-of-pocket expenditure; Empowered Action Group states; Out-of-pocket expenditure on health care; treatment location; vulnerable population; waiting time
This article investigates the covariates of out-of-pocket expenditure (OOPE) on health care, with a special focus on the Empowered Action Group (EAG) states of India. These states are economically weaker and vulnerable. For analysis, the study uses a nationally representative databasethe India Human Development Survey (IHDS I, 20042005 and IHDS II, 20112012)by applying the log-linear regression method. Four regression models have been specified in the article. The pooled regression method is applied to check the robustness of the models. Results identify that factors such as the location of the respondent, education, waiting time in hospitals, household expenditure per capita and the location of the hospital play a significant role in determining the OOPE on health care in India. Among other factors, waiting time in the hospital and the distant treatment location result in higher opportunity costs for better treatment facilities, hence increasing the burden on OOPE. The study concludes with suggestions based on these covariates, especially for the EAG states. 2024 Indian Institute of Health Management Research.
Journal of Health Management, Vol-26, No. 4, pp. 594-604.
Bhattacharjee D., Christ (Deemed to be University), Delhi NCR, Uttar Pradesh, Ghaziabad, India; Mohanty P.C., Department of Humanities and Social Sciences, IIT Roorkee, Uttarakhand, India
Curcumin Analogues as Organic Fluorophores for Latent Fingerprint Imaging
Aggregation-induced emission; Curcumin; Emission; Latent fingerprint; Organic fluorophore
Synthesis and characterization of two curcumin analogues BAA and Br-AA via a condensation reaction was reported. Both the synthesized organic luminophores exhibited aggregation-induced emission (AIE) with bright yellow and green emission respectively. Increase in the water% enhanced the emission by both the compounds confirmed the AIE property. A detailed study of latent fingerprints visualization was also carried out for both the analogues. Both the compounds showed good to normal capability to develop latent fingerprints (LFPs). Compound BAA performed better as a fluorescent material to develop LFPs compared to Br-AA. The LFPs developed were analyzed to obtain 13 level of fingerprint patterns under UV 365 nm illumination. The LFPs developed using BAA exhibited excellent efficiency, sensitivity, high contrast with low background interreference. All three levels of fingerprint patterns were identified by BAA. However, Br-AA showed inability to develop high clarity images of latent fingerprints. The solid-state emission nature of the analogues was also evaluated from their emission spectra and CIE coordinates were found to be were (0,187, 0.518) and (0.265, 0.484) for BAA and Br-AA respectively. 2024 Wiley-VCH GmbH.
Kush Durgi N.; Pavana N.; Ramesh D.K.; Pralhad Pujar P.
https://doi.org/10.1002/slct.202401588 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201712902&doi=10.1002%2fslct.202401588&partnerID=40&md5=fbf191a448cea2f9f760ecd42912e6c4
Kush Durgi N., Department of Chemistry, CHRIST (Deemed to be University), Hosur main road, Bhavani Nagar, S G palya, Bangalore, 560029, India; Pavana N., Department of Chemistry, CHRIST (Deemed to be University), Hosur main road, Bhavani Nagar, S G palya, Bangalore, 560029, India; Ramesh D.K., Department of Chemistry, CHRIST (Deemed to be University), Hosur main road, Bhavani Nagar, S G palya, Bangalore, 560029, India; Pralhad Pujar P., Department of Chemistry, CHRIST (Deemed to be University), Hosur main road, Bhavani Nagar, S G palya, Bangalore, 560029, India
MOF derived cobalt-phospho-boride for rapid hydrogen generation via NaBH4 hydrolysis
Hydrogen generation; Hydrolysis of NaBH4; Metal-organic framework; Transition metal phospho-borides
Developing effective transition metal catalysts that can replace precious metal-based catalysts for hydrogen generation from the hydrolysis of chemical hydride has attracted extensive interest. This study focuses on synthesizing cobalt phospho-boride (CoPB) within a metal-organic framework (MOF) framework using hydrothermal and chemical reduction methodologies. Incorporating boron and phosphorous into Co-MOF enhances the hydrogen generation rate, reaching 1.8 L/min/g and 3.6 L/min/g for CoB-MOF and CoPB-MOF, respectively, during NaBH4 hydrolysis. Along with the nanostructured morphology of MOF, the electron modulation around Co-sites due to the presence of P and B creates a synergic effect to produce this high H2 generation rate and very low activation energy of 20.7 kJ/mol. The kinetic studies on NaBH4 hydrolysis reaction revealed zero-order kinetics with respect to NaBH4 concentration for CoPB-MOF, where porous morphology renders facile movement of BH4? ions to the active sites. The heat treatment at 773 K in the N2 atmosphere did not show any significant fall in the activity of CoPB-MOF, thus showcasing its robust nature. Moreover, the present catalyst also displayed recycling behavior with no signs of deactivation. 2024 Hydrogen Energy Publications LLC
Abraham A.; Silviya R.; Patel R.; Patel N.; Fernandes R.
International Journal of Hydrogen Energy, Vol-77, pp. 1245-1253.
https://doi.org/10.1016/j.ijhydene.2024.06.247 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85196516475&doi=10.1016%2fj.ijhydene.2024.06.247&partnerID=40&md5=5050b01c79dc3666d3de39dba2a80760
Abraham A., Department of Physics and Electronics, CHRIST University, Bengaluru, 560029, India; Silviya R., Department of Physics and Electronics, CHRIST University, Bengaluru, 560029, India; Patel R., Department of Physics and Electronics, CHRIST University, Bengaluru, 560029, India; Patel N., Department of Physics and Electronics, CHRIST University, Bengaluru, 560029, India; Fernandes R., Department of Physics and Electronics, CHRIST University, Bengaluru, 560029, India
Unveiling the kinetics of oxygen evolution reaction in defect-engineered B/P-incorporated cobalt-oxide electrocatalysts
Crystalline defects; Electrocatalyst; Kinetic study; OER; Oxygen vacancy; Water splitting
Defect-rich transition-metal oxide electrocatalysts hold great promise for alkaline water electrolysis due to their enhanced activity and stability. This study presents a new strategy that significantly improve the OER activity of Co-oxide nanosheets through incorporation of B and P (B/P-CoOx NS), eventually leading to abundant surface defects and oxygen vacancies. The B/P-CoOx NS demonstrates low overpotential of 220 mV to achieve 10 mA/cm2. The electrochemical and kinetic studies coupled with conventional morphological and structural characterizations, reveal that various crystalline defects like vacancies, dislocations, twin planes, and grain boundaries play crucial roles in promoting the OH? ion adsorption, the formation of intermediates, and the desorption of oxygen molecules. The industrial viability of the developed electrocatalyst is substantiated through assessments under harsh industrial conditions of 6 M KOH at 60 C in a zero-gap single-cell alkaline electrolyzer which achieves 1 A/cm2 at 1.95 V. Chronoamperometry tests (100 h) highlight remarkable robustness of the electrocatalyst. This work establishes a new strategy to fabricate defect-rich OER electrocatalysts, setting a precedent to achieve better OER rates with non-noble materials. 2024
Bhide A.; Gupta S.; Bhabal R.; Patel M.; Bahri M.; Fernandes R.; Patel N.
https://doi.org/10.1016/j.mtener.2024.101638 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85197747365&doi=10.1016%2fj.mtener.2024.101638&partnerID=40&md5=33016e03829a85944e93ed73a8b2235d
Bhide A., Department of Physics and Electronics, Christ University, Bengaluru, 560029, India, Department of Materials, Design and Manufacturing Engineering, University of Liverpool, Liverpool, L69 3GH, United Kingdom; Gupta S., Advanced Materials Department, Joef Stefan Institute, Jamova 39, Ljubljana, 1000, Slovenia; Bhabal R., Department of Physics and Electronics, Christ University, Bengaluru, 560029, India; Patel M., Department of Materials, Design and Manufacturing Engineering, University of Liverpool, Liverpool, L69 3GH, United Kingdom; Bahri M., Albert Crewe Centre for Electron Microscopy, University of Liverpool, Brownlow Hill, Liverpool, L69 3GL, United Kingdom; Fernandes R., Department of Physics and Electronics, Christ University, Bengaluru, 560029, India; Patel N., Department of Physics and Electronics, Christ University, Bengaluru, 560029, India
Embracing intelligent machines: Aqualitative study to explore thetransformational trends inthe workplace
Future work practices; Future workplace; Intelligent machines; Qualitative research; Transformational trends
Purpose: With Industry 4.0 and the extensive rise of smart technologies, we are seeing remarkable transformations in work practices and workplaces. Scholars report the phenomenal progress of smart technologies. At the same time, we can hear the rhetoric emphasising their potential threats. This study focusses on how and where intelligent machines are leveraged in the workplace, how humans co-working with intelligent machines are affected and what they believe can be done to mitigate the risks of the increased use of intelligent machines. Design/methodology/approach: We conducted in-depth interviews with 15 respondents working in various leadership capacities associated with intelligent machines and technologies. Using NVivo, we coded and churned out the themes from the qualitative data collected. Findings: This study shows how intelligent machines are leveraged across different industries, ranging from chatbots, intelligent sensors, cognitive systems and computer vision to the replica of the entire human being. They are used end-to-end in the value chain, increasing productivity, complementing human workers skillsets and augmenting decisions made by human workers. Human workers experience a blend of positive and negative emotions whilst co-working with intelligent machines, which influences their job satisfaction level. Organisations adopt several anticipatory strategies, like transforming into a learning organisation, identifying futuristic technologies and upskilling their human workers, regularly conducting social learning events and designing accelerated career paths to embrace intelligent technologies. Originality/value: This study seeks to understand the emotional and practical implications of the use of intelligent machines by humans and how both entities can integrate and complement each other. These insights can help organisations and employees understand what future workplaces and practices will look like and how to remain relevant in this transformation. 2024, Sumathi Annamalai and Aditi Vasunandan.
Central European Management Journal, Vol-32, No. 3, pp. 350-367.
https://doi.org/10.1108/CEMJ-03-2023-0137 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183881227&doi=10.1108%2fCEMJ-03-2023-0137&partnerID=40&md5=0436f900053be4835af2cbaa990c0f7e
Annamalai S., School of Business and Management, Christ University, Bangalore, India; Vasunandan A., Goldman Sachs India, Bangalore, India
Mathematical model for effective CO2 emission control with forest biomass using fractional operator
Boundness; Caputo fractional derivative; Forest biomass; Global warming; Lyapunov stability; Numerical method
The emission of CO2 is the foremost culprit for global warming and is also considered a significant greenhouse gas. Due to the human populations tremendous growth and activities, the rate of CO2 in the atmosphere has increased. To mitigate the emission of CO2 there are artificial ways. But, naturally have a natural resource called "Forest Biomass," one of the significant sinks to absorb CO2 during photosynthesis. Considering all these factors, the main objective of the current investigation is to understand and illustrate the importance of forest biomass in the emission of CO2. The proposed nonlinear model consists of four variables: atmospheric CO2, human population, energy sectors, and forest biomass. We have studied the model both qualitatively and quantitatively, which will help us make future predictions. To study the model in depth, we have formed a fractional-order model to study the systems behavior at different ranges of fractional orders. The model is termed with the Caputo fractional operator. Boundness and Lyapunov stability for non-linear and fractional order models are studied, and equilibrium points, existence and uniqueness, and numerical simulation are examined. The Adams-Bashforth-Moulton method illustrates the essence of the systems numerical method. The numerical approach reveals that the altered models stability is unchanged. Also, we have examined the model by changing the parameter values to different fractional orders to understand the systems behavior, and the changes are captured as figures. The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.
Modeling Earth Systems and Environment, Vol-10, No. 4, pp. 5469-5488.
Springer Science and Business Media Deutschland GmbH
Sherly K., Department of Mathematics, CHRIST University, Bengaluru, 560029, India; Veeresha P., Department of Mathematics, CHRIST University, Bengaluru, 560029, India
Exploring the Relationship between Clean Energy Indices and Oil Prices: a Ten-Day Window approach
Clean Energy Indices; WTI; Comovements; Portfolio Diversification
This paper aims to assess the comovements between clean energy indices, namely the Clean Energy Fuels (CLNE), Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), TISDALE Clean Energy (TCEC.CN), Wilderhill (ECO), West Texas Intermediate (WTI) stock indices, over the period from 1 January 2018 to 23 November 2023. We used 10-day windows to analyse the duration and nature of the shocks. Granger causality tests revealed that 20 of the 30 possible pairs showed significant movements, with the WTI influencing all the clean energy indices, highlighting its global importance. CELS also showed a robust influence on all pairs, while SPGTCLEN had a significant but less far-reaching influence. The CLNE and ECO indices showed limited influences, suggesting the potential for diversification, the TCEC.CN proved to be independent and a determining factor for portfolio diversification. The Impulse Response Functions (IRF) confirmed significant movements between CELS, SPGTCLEN and WTI, reflecting the market's response to policies and adjustments in expectations. Fluctuations in oil prices substantially affect clean energy indices, highlighting the interconnectedness and volatility of these markets. In conclusion, these results indicate that despite the growth of clean energy, the sector is still influenced by fluctuations in the fossil fuel market. 2024, Creative Publishing House. All rights reserved.
Dias R.; Galv R.; Cruz S.; Irfan M.; Teixeira N.; Gonlves S.
Journal of Ecohumanism, Vol-3, No. 4, pp. 1462-1472.
https://doi.org/10.62754/joe.v3i4.3675 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85203136070&doi=10.62754%2fjoe.v3i4.3675&partnerID=40&md5=246a44855b2194ca84974de2ac9d2d8d
Dias R., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal, ESCAD-Instituto Politnico da Lusofonia, Lisboa, Portugal; Galv R., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal; Cruz S., ESCAD-Instituto Politnico da Lusofonia, Lisboa, Portugal, CEFAGE-University of Algarve, Campus de Gambelas, Faro, 8005-189, Portugal; Irfan M., Christ University, Christ University, Bengaluru, India; Teixeira N., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal; Gonlves S., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal
Education Inequality in India: An Empirical Analysis Using National Sample Survey Data
decomposition; disparity; Education; Gini ratio; inequality
This research examines the ruralurban differences in educational inequality of major states in India. Using National Sample Survey Office (NSSO) data and decomposition methods, this study finds that overall educational inequality has come down but still very high in rural areas. We found that factors such as limited access to higher education, financial constraints and social factors are responsible for the high inequality in rural areas. This study highlights the need for government intervention to enhance educational access by increasing institutions and providing financial aid. It also notes that non-financial barriers like English proficiency further exclude lower socio-economic groups. Hence, we argue for inclusive education policies to improve the existing situation. 2024 Institute for Human Development.
Indian Journal of Human Development, Vol-18, No. 2, pp. 267-279.
Aneesh M.R., CHRIST University, Karnataka, Bengaluru, India; Maya K., CHRIST University, Karnataka, Bengaluru, India; Aneesh K.A., CHRIST University, Ghaziabad Campus, Uttar Pradesh, India
Complex and Multifaceted Nature of Cryptocurrency Markets: A Study to Understand its Time-Varying Volatility Dynamics
Cryptocurrency; Decentralised Finance; DeFi; EGARCH; GJR-GARCH; Market Capitalization
Decentralised Finance (DeFi) provides a new way to perform complex financial transactions by exploiting blockchain's ability to maintain a decentralised ledger of transactions without being constrained by centralised systems or human intermediaries. DeFi provides alternative financial instruments that might lessen portfolio risk, especially given the erratic state of the financial markets today. This study analyses the association between the year of the coin in which it was introduced and the market capitalisation of the respective companies. Furthermore, the study also tries to understand the volatility associated with cryptocurrencies using EGARCH & GJR-GARCH models. The results reveal that market capitalisation is not similar for all three stages of the age of cryptocurrency. Also, negative news tends to impact Bitcoin more than positive news, and the volatility is persistent and long-lasting. Ethereum, BNB & Solana see more volatility from absolute past shocks; however, Tether exhibits low but persistent volatility as a stablecoin. 2024, Creative Publishing House. All rights reserved.
Agrawal M.; Dias R.; Irfan M.; Galv R.; Gonlves S.
Journal of Ecohumanism, Vol-3, No. 4, pp. 3012-3031.
https://doi.org/10.62754/joe.v3i4.3819 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85203132651&doi=10.62754%2fjoe.v3i4.3819&partnerID=40&md5=e9aeb5a4643d90117c64c33239b5be73
Agrawal M., NSB, Karnataka, Bangalore, India; Dias R., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal; Irfan M., School of Business and Management, Christ University, Bengaluru, India; Galv R., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal; Gonlves S., Instituto Politnico de Setal, Escola Superior de Cicias Empresariais, Setal, Portugal
Link stability - based optimal routing path for efficient data communication in MANET
C-K Means; Data communication (DC) and link stability (LS); Digital signature algorithm (DSA); Entropy-based gannet optimization algorithm (E-GOA); Mobile Ad hoc network (MANET); Optimal routing path (OP); Pearson correlation coefficient based; SWIFFT (PCC-SWIFFT)
The paper delves into the complexities of Mobile Ad hoc Networks (MANETs), which consist of a diverse array of wireless nodes. In such networks, routing packets poses a significant challenge due to their dynamic nature. Despite the variety of techniques available for optimizing routing in MANETs, persistent issues like packet loss, routing overhead, and End-to-End Delay (EED) remain prevalent. In response to these challenges, the paper proposes a novel approach for efficient Data Communication (DC) by introducing a Link Stability (LS)-based optimal routing path. This approach leverages several advanced techniques, including Pearson Correlation Coefficient SWIFFT (PCC-SWIFFT), Galois-based Digital Signature Algorithm (G-DSA), and Entropy-based Gannet Optimization Algorithm (E-GOA). The proposed methodology involves a systematic process. Initially, the nodes in the MANET are initialized to establish the network infrastructure. Subsequently, the Canberra-based K Means (C-K Means) algorithm is employed to identify Neighboring Nodes (NNs), which are pivotal for creating communication links within the network. To ensure secure communication, secret keys (SK) are generated for both the Sender Node (SN) and the Receiver Node (RN) using Galois Theory. Following this, PCC-SWIFFT methodologies are utilized to generate hash codes, serving as unique identifiers for data packets or routing information. Signatures are created and verified at the SN and RN using the G-DSA. Verified nodes are subsequently added to the routing entry table, facilitating the establishment of multiple paths within the network. The Optimal Path (OP) is selected using the E-GOA, considering factors such as link stability and network congestion. Finally, Data Communication (DC) is initiated, continuously monitoring LS to ensure optimal routing performance. Comparative analysis with existing methodologies demonstrates the superior performance of the proposed model. In summary, the proposed approach offers a comprehensive solution to enhance routing efficiency in MANETs by addressing critical issues and leveraging advanced algorithms for key generation, signature verification, and path optimization. 2024, Universitas Ahmad Dahlan. All rights reserved.
International Journal of Advances in Intelligent Informatics, Vol-10, No. 3, pp. 471-489.
https://doi.org/10.26555/ijain.v10i3.1558 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85214812649&doi=10.26555%2fijain.v10i3.1558&partnerID=40&md5=b3c2665f868b03cfc1bdb368d79774da
Salim R.P., Bharathiyar University, Providence College of Engineering, India; Ramachandran R., CHRIST (Deemed to be university), Bangalore, India
Synthesis and characterization of alkali-activated binders with slag and waste printed circuit board
Alkali-activated; Characterization; Printed circuit board; Slag; Waste
The global production of printed circuit board (PCB) is expected to rise substantially in the next decade due to the advancement in technology. The production of PCB results in generation of hazardous waste of various kinds, and one such waste is the very fine particles of the board material that is generated due to drilling and other preparatory operations. The disposal of such waste in the environment can result in serious consequences which needs attention. Therefore, recycling of waste printed circuit board (WPCB) can mitigate its harmful effects on the environment and also reduce the remediation costs. In this study, the WPCB is used as a substitute to ground granulated blast furnace slag (GGBFS) in development of alkali-activated binder. Alkali-activated binder was synthesized with GGBFS, WPCB, sodium hydroxide sol. (NaOH), and sodium silicate sol. (Na2SiO3). GGBFS was replaced with WPCB at replacement rates of 0%, 10%, 20%, and 30% by volume. Additionally, the effect of varying concentration of NaOH and Na2SiO3 on the physical and mechanical performance of the binder was studied. The developed binders were evaluated for workability, strength, water absorption, and efflorescence properties. Further, to ascertain its safety on the environment, the toxicity characteristic leaching procedure (TCLP) test was also performed. The results indicate that WPCB characteristics are compatible with GGBFS in terms of its particle size distribution. Moreover, the replacement of GGBFS with up to 20% WPCB provides desirable properties for the alkali-activated binder. However, higher replacements are not recommended, since it had detrimental effect on the mechanical performance of the binder. The study revealed that desirable performance can be achieved for binders with 8 M NaOH and with Na2SiO3 to NaOH ratio of 2, and up to 20% GGBFS replaced with WPCB. The results of TCLP test disclose that the contaminant in the leachate from alkali-activated binders with WPCB are within regulatory limits, and do not pose any threat to the environment. Finally, the outcome of this study provides an innovative approach towards formulation of eco-friendly binder for various construction applications such as foundations, buildings, bridges, pavements, etc. 2024 The Author(s)
Journal of Hazardous Materials Advances, Vol-15
https://doi.org/10.1016/j.hazadv.2024.100455 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202503343&doi=10.1016%2fj.hazadv.2024.100455&partnerID=40&md5=425b9048f4b51d94791b0236620e07fa
Basha G., Department of Civil Engineering, School of Engineering and Technology, Christ University, Bangalore, 560074, India; Hossiney N., Department of Civil Engineering, School of Engineering and Technology, Christ University, Bangalore, 560074, India
Theoretical investigation of SH wave transmission in magneto-electro-elastic structure having imperfect interface using approximating method
Asymptotic approach; Contact analysis; Imperfection parameters; Love-type wave; Quasi-classical approach; WentzelKramersBrillouin
Assuming different types of imperfect interfaces composed of a magnetoelectroelastic (MEE) structure, the current work investigates the transmission of a Love-type wave in a MEE solid cylindrical structure. The spatially variable quasi-classical technique is applied to derive the analytical solution of the layers. The substantial impact of factors related to the imperfect interface on the wave phase velocities is illustrated numerically. The Love-type wave's dispersion relation has been established as the determinant for electrically and magnetically open and short cases. Moreover, the article investigates the consequences of six different imperfect parameters namely mechanical imperfection, electrical imperfection, magnetic imperfection, magneto-mechanical imperfection, electro-mechanical imperfection, and magneto-electrical imperfection parameters in magnetically and electrically open and short scenarios are covered. The findings demonstrate that, in comparison to the short case, the electric and magnetic open case has a higher phase velocity. Here are some key findings: imperfection parameters strongly affect the phase velocity and attenuation coefficient curves and the bonding parameter's prominent influence is inversely proportional to the attenuation coefficient and well-proportional to the phase velocity. Identifying the piezoelectric and piezomagnetic connection and its possible use in the construction of sensors, actuators, energy harvesters, and nano-electronics is the result of this theoretical investigation. This is the first time that a polar coordinate system was used in the quasi-classical method of solving differential equations. The results argue that the outcomes of this specific model have an immense ability to deal with various commercial and industrial applications in acoustical engineering, geotechnical design, ultrasonic technology, and SAW devices. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
Applied Physics A: Materials Science and Processing, Vol-130, No. 8
Seema, Christ University, Bengaluru, 560029, India; Singhal A., Christ University, Bengaluru, 560029, India
Enhanced visible light harvesting in dye-sensitized solar cells through incorporation of solution-processable silver plasmons and anthracite-derived graphene quantum dots
Anthracite coal; Dye-sensitized solar cells; Graphene quantum dots; Linear sweep voltammetry; Open circuit voltage decay; Surface plasmon resonance
The major setback for the enhanced performance of DSSC is the narrow absorption window and the interfacial exciton recombination. Therefore, in this work, the photovoltaic performance of dye-sensitized solar cells has been improved by the synergistic effect of anthracite-derived graphene quantum dots and silver plasmons. GQD and Ag coupled photoanodes were fabricated by a facile solution processable process under room temperature. The as-fabricated DSSC TiO2/Ag/GQD (TAG) exhibited an enhanced power conversion efficiency of 10.5 % with a current density of 22.40 mAcm?2 measured under solar irradiation of 100 mWcm?2 with AM 1.5G. An enhancement surpassing 30.5 % was obtained for the champion cell when compared to the pristine TiO2 based DSSC. Furthermore, this study emphasizes developing a cutting-edge approach for the high-quality use of fossil fuel-derived graphene quantum dots in energy conversion systems, thereby encouraging the green conversion of fossil fuels and broadening the potential of anthracite coal's utilization in energy conversion applications. 2024 Elsevier Ltd
Rao A.A.; Narendhiran S.; Balachandran M.
https://doi.org/10.1016/j.mtphys.2024.101512 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198256901&doi=10.1016%2fj.mtphys.2024.101512&partnerID=40&md5=4bd0620f3064ce302c8d7a7b1996503c
Rao A.A., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Narendhiran S., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Balachandran M., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India