Dislocation and microindentation analysis of vapour grown Bi 2Te3-xSex whiskers
Annealing; Bismuth telluride; Dislocation loops; Microhardness; Physical vapour deposition (PVD); Quenching; Stacking faults; Whiskers
The structural defects and microhardness of Bi2Te 3-xSex whiskers (x = 0, 0.2 and 0.4 at % Se) grown by physical vapour deposition (PVD) method have been investigated. Concentric pairs of dislocation loops were observed on the as-grown surfaces of short hexagonal prisms. A systematic study of dislocations in these crystals was carried out by chemical etching technique. The effects of Se doping, annealing and quenching on the mechanical properties have also been studied on the prism faces of Bi 2Te3-xSex whiskers. 2008 WILEY-VCH Verlag GmbH & Co. KGaA.
Crystal Research and Technology, Vol-43, No. 6, pp. 594-598.
https://doi.org/10.1002/crat.200711084 https://www.scopus.com/inward/record.uri?eid=2-s2.0-54949109735&doi=10.1002%2fcrat.200711084&partnerID=40&md5=bc0fabd2ffb9f964a3d8b1322440afd2
Kunjomana A.G., P.G. Department of Physics, Christ College (Autonomous), Bangalore - 560 029, Karnataka, India; Chandrasekharan K.A., P.G. Department of Physics, Christ College (Autonomous), Bangalore - 560 029, Karnataka, India
Crack propagation; GaTe; Physical vapour deposition (PVD); Vickers microhardness; Whiskers
Single crystal whiskers of gallium telluride (GaTe) have been grown by the physical vapour deposition (PVD) method. Microindentation studies were carried out on the prism faces of the needles to understand their mechanical behaviour. The variation in the microhardnessof GaTe crystals with applied load has been determined at room temperature using Vickers microhardness indenter. The work- hardening exponent has also been computed for different load regions. 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Crystal Research and Technology, Vol-40, No. 8, pp. 782-785.
https://doi.org/10.1002/crat.200410431 https://www.scopus.com/inward/record.uri?eid=2-s2.0-25444526628&doi=10.1002%2fcrat.200410431&partnerID=40&md5=ca8a1245eb2d283961a3a3c4409f2463
Kunjomana A.G., P. G. Department of Physics, Christ College, Bangalore - 560 029, Karnataka, India; Chandrasekharan K.A., P. G. Department of Physics, Christ College, Bangalore - 560 029, Karnataka, India
Physical properties of vapour grown indium monotelluride platelets
A1. Characterization; A1. Crystal morphology; A2. Growth from vapour; B2. Semiconducting indium compounds
Indium monotelluride (InTe) crystals were grown from vapour phase under different temperature gradients by employing physical vapour deposition (PVD) method. The morphology of these crystals such as whiskers, needles, platelets etc., strongly depends on the temperature distribution in the horizontal dual zone furnace. InTe platelets were deposited by setting the temperature of the charge (TC) and growth (TS) zones at 1073 K and 773 K (?T=300 K), respectively, for different growth periods (24 h, 48 h, 72 h and 96 h). The surface growth features have been analyzed by scanning electron microscopes, which indicate layer growth mechanism for all the crystals. Various crystals grown under ?T=200 K and 300 K (retaining TS invariant) were examined by X-ray diffraction and elemental analysis. InTe samples exhibited consistent lattice parameters, density and atomic percentage, establishing stoichiometry and chemical homogeneity. The results obtained for Seebeck coefficient, electrical conductivity, power factor, dislocation density and microhardness are found to be reproducible as well. The vapour deposited InTe platelets are mechanically stable and possess high value of TEP, which ensure their practical application in thermoelectric power generation. 2014 Elsevier B.V.
Kunjomana A.G.; Chandrasekharan K.A.; Teena M.
Journal of Crystal Growth, Vol-411, pp. 81-87.
https://doi.org/10.1016/j.jcrysgro.2014.10.050 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912572106&doi=10.1016%2fj.jcrysgro.2014.10.050&partnerID=40&md5=676b60de76bfca089dbe528e397ab096
Kunjomana A.G., Department of Physics, Christ University, Bangalore, 560 029, India; Chandrasekharan K.A., Department of Physics, Christ University, Bangalore, 560 029, India; Teena M., Department of Physics, Christ University, Bangalore, 560 029, India
Synthesis, growth mechanism and physical properties of vapour-deposited GaTe platelets
electrical properties; energy-dispersive X-ray analysis; mechanical parameters; physical vapour deposition; semiconductors
The physical vapour deposition (PVD) method has been employed to yield gallium telluride (GaTe) platelets. The morphology and growth mechanism of these platelets were investigated with the aid of scanning electron micrographs. The stoichiometry and homogeneity of the grown samples were confirmed by chemical analysis. The X-ray diffraction (XRD) technique has been used to explore the structure and phase of the compound. On the basis of the Archimedes principle, the density of crystals was estimated to be 5.442 kg mm-3. The resistivity and conductivity type were determined by the van der Pauw method. UV-vis-NIR studies revealed a direct transition with an energy gap of 1.69 eV. Mechanical properties such as microhardness, toughness, Young's modulus and elastic stiffness constant of GaTe crystals in response to the stress field due to an external load were studied to realize their suitability for radiation detector applications. The present observations provide an insight into the physical properties of the vapour-grown GaTe platelets, which are found to be superior over their melt counterparts. 2014 International Union of Crystallography.
Kunjomana A.G.; Teena M.; Chandrasekharan K.A.
Journal of Applied Crystallography, Vol-47, No. 6, pp. 1841-1848.
Kunjomana A.G., Department of Physics, Christ University, Bangalore, Karnataka, 560029, India; Teena M., Department of Physics, Christ University, Bangalore, Karnataka, 560029, India; Chandrasekharan K.A., Department of Physics, Christ University, Bangalore, Karnataka, 560029, India
Physical properties of vapour grown indium monotelluride platelets /
Journal Of Crystal Growth, Vol.415, pp.81-87, ISSN No: 0022-0248.
Kunjomana, A G., Chandrasekharan, K A., Teena M.
Synthesis, growth mechanism and physical properties of vapour-deposited GaTe platelets /
Journal Of Applied CrystalloGraphy, Vol.47, Issue 6,pp.1841-1848, ISSN No: 1600-5767.
Kunjomana, A G., Chandrasekharan, K A., Teena, M.
Catalyzing the Affordability of Perovskite Solar Cells with Aluminum-Modified Cubic Titania
electron transport material; electron traps; nanocube; nanosphere; oxygen vacancy; Perovskite solar cell; TiO2
As a key component of perovskite solar cells (PSCs), the electron transport layer (ETL) extracts charges efficiently. While TiO2 is widely recognized as a superior electron transport material (ETM) for its numerous advantages, the morphological limitations of spherical TiO2 nanoparticles (NPs) lead to significant electron losses. Therefore, as an alternative to nanospheres, TiO2 nanocubes are synthesized through a solvothermal route and employed as ETM in the low-cost carbon electrode-based perovskite solar cells (CPSCs). The structural, morphological, and optical properties of the TiO2 nanocubes (NCs) are studied and compared with TiO2 nanospheres (NSs) in detail. The device possessing cubic TiO2 achieved a power conversion efficiency (PCE) of 10.6% with a current density (Jsc) of 21.79 mA/cm2. Recognizing that the oxygen vacancies in cubic TiO2 are lower than in spherical TiO2, it is inferred that further reduction of oxygen vacancies in cubic TiO2 could enhance the current collection. Hence, to get rid of the oxygen vacancy (which acts as an electron trap) in the cubical TiO2, aluminum (Al3+) is incorporated into its matrix. A comprehensive analysis of its impact on structural and optical behavior follows. In addition to its cost-effectiveness and conductive nature, it has been observed that the stable form of Al3+ replaces the unstable Ti3+ (which acts as a trap state), thereby reducing the recombination rate. With the highest current collection of 22.85 mA/cm2, a PCE of 11.3% has been recorded for the solar cell that possessed 1% Al-doped TNC. Furthermore, the ambient stability of the respective device shows ?85% of its initial PCE. The effect of the TiO2 nanostructure and Al3+ doping in TiO2 nanocubes is discussed elaborately in this work. 2024 American Chemical Society
Kunka Ravindran A.; Narendhiran S.; Nambiraj B.; Muthusamy Anandan G.L.; Muthu S.P.; Perumalsamy R.
ACS Applied Optical Materials, Vol-2, No. 1, pp. 230-243.
https://doi.org/10.1021/acsaom.3c00410 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186075826&doi=10.1021%2facsaom.3c00410&partnerID=40&md5=b6344f8f7f1d187d19b6a76c8bda8e34
Kunka Ravindran A., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Narendhiran S., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Nambiraj B., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Muthusamy Anandan G.L., Department of Chemistry, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Muthu S.P., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Perumalsamy R., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India
Multi-dynamics and emission tailored fluoroperovskite-based down-conversion phosphors for enhancing the current density and stability of the perovskite solar cells
State-of-the-art and innovative research is being intensively employed on perovskite solar cells (PSCs) to expand their frontiers further. This study is a successful attempt to drive the limit of photocurrent density (Jsc) beyond conventional PSCs (which typically utilize the visible spectrum alone) through a nonlinear optical phenomenon called down-conversion (DC). The use of DC luminescence to harness the UV region from the solar spectrum is explored by utilizing Eu3+ activated RbCaF3, a fluoroperovskite-based phosphor material. It is observed that PSCs, which used RbCaF3:Eu3+ incorporated TiO2 electron transport layer (ETL), enhanced their Jsc and UV stability compared to those with pristine TiO2-oriented ETL. Such improvement in the aforementioned devices is due to the result of converting high-energy UV photons to effectively absorbable low-energy visible photons for perovskite absorbers. Overall, the DC-aided PSC offered a substantial Jsc of 23.54 mA cm?2 (9.2% superior to the conventional PSC) and boosted its power conversion efficiency (PCE) from 11.2% to 13.3%. It is evident that DC-based PSCs show a much better shelf-life when compared to conventional PSCs. This unique approach for boosting the Jsc with enhanced stability can be utilized for the potential applications of PSCs. 2023 The Royal Society of Chemistry.
Kunka Ravindran A.; Ramesh J.K.; Narendhiran S.; Arumugam R.; Muthu S.P.; Perumalsamy R.
Sustainable Energy and Fuels, Vol-7, No. 9, pp. 2288-2300.
https://doi.org/10.1039/d3se00354j https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153087309&doi=10.1039%2fd3se00354j&partnerID=40&md5=96680fb7e6e598501550b8994c968ce8
Kunka Ravindran A., Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India; Ramesh J.K., Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India, Department of Physics, Materials Science Research Center, Indian Institute of Technology Madras, Tamilnadu, Chennai, 600036, India; Narendhiran S., Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India, Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bangaluru, 560029, India; Arumugam R., CNR-SPIN, c/o University of Salerno, Fisciano, I-84084, Italy; Muthu S.P., Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India; Perumalsamy R., Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India
A Review of biophilic design at Kuttikattoor school for the children
The objective of this paper is the creation of a school to help the children of Kutikatoor live a more accessible and simpler life: students in the concentration range from 4 to 16 (Play School - - Grade 10). The proposed location, which is around 18.3 acres in size, lies in Kuttikattoor, Kozhikode, and Kerala. The land is surrounded by greenery and situated in a mountainous area. The study will concentrate on how biophilic architecture and design may enhance students' lives. This paper will discuss how biophilic design may benefit schools by creating circulation and spatial connections between the built and natural environments. The biophilic design can have quantifiable beneficial effects on student performance and well-being by including natural components. It is necessary to thoroughly analyze the biophilic design in relation to the learning environment for students, using ideas of ecological, visual, and spatial integration. By fostering a soothing atmosphere, lowering anxiety, and boosting physical fitness, biophilic design, which incorporates natural light, greenery, and nature vistas, can increase attention, decrease stress, stimulate creativity, and improve academic accomplishment. The school's design will be implemented by incorporating the architectural design into the contoured regions and using the idea of biophilic design patterns. Depending on the climate and the site's orientation, the design will be implemented such that locally accessible materials are employed in a hilly area. This detailed analysis of the case study and literature review for the school design will help us to design and conceptualize as an architect. Further, the study will also emphasize biophilic design which is aligned with the built environment in school design. The Authors, published by EDP Sciences.
https://doi.org/10.1051/e3sconf/202454601002 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198919510&doi=10.1051%2fe3sconf%2f202454601002&partnerID=40&md5=6df86b52b55c85037320d74929a65afc
Kunnath A.R.E., Christ University, Bangalore, India; Gupta J., Christ University, Bangalore, India
Significance of induced magnetic field and exponential space dependent heat source on quadratic convective flow of Casson fluid in a micro-channel via HPM
Casson fluid; Exponential heat source; Microchannel; Nonlinear boussinesq approximation; Nonlinear convection
The effects of the exponential space based heat source on quadratic convective flow of Casson fluid in a microchannel with an induced magnetic field is studied through a statistical approach. The flow is considered in vertical microchannel formed by two vertical plates. The solution for the governing equations has been obtained for the velocity, induced magnetic field and temperature field using Homotopy Perturbation Method (HPM). The current density, skin friction co-efficient and Nusselt number expressions are also estimated. The impact of various physical parameters on the velocity, temperature, induced magnetic field, current density, skin friction co-efficient and Nusselt number distributions have been discussed with the help of graphs. The results obtained by using HPM, are compared to those obtained by using the Runge-Kutta-Fehlberg 4-5th order method and an excellent agreement is found. The impact of Casson fluid parameter and the exponential heat source is qualitatively agreed for all flow fields. 2019 IIETA.
Kunnegowda T.; Mahanthesh B.; Lorenzini G.; Animasaun I.L.
Mathematical Modelling of Engineering Problems, Vol-6, No. 3, pp. 369-384.
International Information and Engineering Technology Association
https://doi.org/10.18280/mmep.060308 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072867978&doi=10.18280%2fmmep.060308&partnerID=40&md5=e743258e8d3ca226214e9d5d1a8b0fc9
Kunnegowda T., Department of Mathematics, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India; Mahanthesh B., Department of Mathematics, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India; Lorenzini G., Department of Engineering and Architecture, University of Parma, Parco Area Delle Scienze 181/A, Parma, 43124, Italy; Animasaun I.L., Fluid Dynamics Research Group, Department of Mathematical Sciences, Federal University of Technology, Akure, Nigeria
Linear and non-linear analysis of solute-magneto convection in a couple stress fluid with porous medium under concentration modulation
The effect of concentration modulation and magnetic field in a couple stress fluid with porous medium and salted from above is studied using linear and non-linear analysis. Venezian approach based on perturbation method is used to obtain the expression for solute Rayleigh number and correction solute Rayleigh number. The expression for correction solute Rayleigh number is obtained as a function of couple stress parameter, Chandrashekar number, Darcy number and Schmidt number. The effect of parameters on symmetric and asymmetric concentration modulation are discussed in the paper. A non-autonomous Ginzburg-Landau equation with time periodic co-efficient is obtained to study the effect of parameters on mass transfer. It is found that onset of convection and mass transfer can be delayed or advanced by varying the parameters of the problem. Asymmetric modulation is found to be more stable than the symmetric modulation. 2019 Author(s).
https://doi.org/10.1063/1.5092916 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063301147&doi=10.1063%2f1.5092916&partnerID=40&md5=e6a7c6c37ce27ba5d8b1a7b24ebe1e40
Kunnegowda T., Department of Mathematics, CHRIST (Deemed to Be University), Bangalore, 560029, India; Pranesh S., Department of Mathematics, CHRIST (Deemed to Be University), Bangalore, 560029, India
Towards a Model: Examining the Positive Associations of Warmth, Competence, and Familiarity with Musicians' Attitudes Towards AI
Attitudes towards AI; Competence; Familiarity; Importance-Performance Analysis; PLS-SEM; Predictive Validity; Warmth
This study investigates attitudes towards AI musicians through a Partial Least Squares Structural Equation Modeling (PLS-SEM) approach. Data analysis focuses on the interplay between Anthropomorphism Degree (AD), Listening Type (LT), Warmth (W), Competence (C), Attitude (A), and Familiarity (F). The sample comprises 211 valid responses from college students, exploring perceptions via a questionnaire. Results indicate significant positive associations between attitudes towards AI and Competence, Familiarity, and Warmth. However, predictive validity analysis suggests caution in relying solely on the PLS-SEM model. Importance-Performance Analysis (IPMA) highlights competence as the primary influencer of attitudes towards AI, emphasizing its critical role over Warmth and Familiarity. This study contributes to understanding the nuanced dimensions of human interactions with AI musicians. 2024 IEEE.
Kunnumpurath B.; Menon V.A.; Ashique Ali K.A.; Paul A.
Proceedings of InC4 2024 - 2024 IEEE International Conference on Contemporary Computing and Communications
Institute of Electrical and Electronics Engineers Inc.
Kunnumpurath B., Christ University, Department of Media Studies, Bengaluru, India; Menon V.A., Kristu Jayanti College (Autonomous), Department of Media Studies, Bengaluru, India; Ashique Ali K.A., Central University of Tamil Nadu, Department of Commerce, Thiruvarur, India; Paul A., Christ University, Department of Media Studies, Bengaluru, India
ChatGPT and virtual experience: Student engagement in online script writing-An experimental investigation among media students
To study and assess the immersive virtual environment experience of ChatGPT on student engagement in online script writing among media students, an experiment was conducted at the VR Experiential Lab, Christ University, between September 2023 and January 2024. The media students were tasked with writing a script for a short film within a VR environment, with ChatGPT displayed using an Oculus HMD (head-mounted display). A total of 180 students were recruited for the study through purposive sampling, and experiment photos are provided in the appendix. The data collection tool utilized was the virtual experience questionnaire developed by Tcha-Tokey. 2024, IGI Global. All rights reserved.
AI Algorithms and ChatGPT for Student Engagement in Online Learning, pp. 32-50.
Kunnumpurath B., Christ University, India; Menon V.A., Central University of Tamil Nadu, India; Paul A., Christ University, India
Cultivating self-esteem: Exploring the intersection of culture, neurocognition, and behavior among female media professionals
This study employed a comprehensive research strategy utilizing both online and offline methodologies to gather insights from 278 female media professionals in Karnataka. The survey, conducted from May 2023 to October 2023, encompassed a substantial timeframe, allowing for a thorough data collection process and the observation of potential variations over the months. The self-esteem scale and workplace communication behaviour inventory scale were employed for the data collection. All correlations were statistically significant affirming the reliability of these associations. Linear regression analyses further elucidated the relationships between self-esteem and specific workplace behaviours. 2024 by IGI Global. All rights reserved.
Kunnumpurath B.; Prasad A.; Menon V.A.; Thomas J.
Cognitive Behavioral Neuroscience in Organizational Settings, pp. 65-82.
Kunnumpurath B., Christ University, India; Prasad A., Chinmaya Vishwa Vidyapeeth, India; Menon V.A., Kristu Jayanti College, India; Thomas J., Kristu Jayanti College, India
immersion; Meditation; perceived interactivity; positive thinking; psychological well-being; VR; young adults
This chapter examines how immersion in virtual reality (VR) affects the psychological well-being, perceived interactivity, and positive thinking of young adults. Using a questionnaire adapted from Katy Tcha-Tokey's VR survey and established scales by Sally J. McMillan, Jang-Sun Hwang, and Diener, data was collected from 224 students at Christ University. Participants engaged in a VR meditation session using Meta Quest 2 headsets. Results indicated stronger correlations between immersion and psychological well-being (r = 0.511) and positive thinking (r = 0.485) compared to perceived interactivity (r = 0.319). Regression analyses confirmed immersion's predictive power for psychological well-being (? = 0.511, R2 = 0.261) and perceived interactivity (? = 0.485, R2 = 0.236), with lesser impact on positive thinking (R2 = 0.101). The study suggests that VR immersion notably influences psychological well-being and perceived interactivity among young adults. 2026 Scrivener Publishing LLC.
Kunnumpurath, Biju; Paul, Ajith; Menon, Vishnu Achutha
Augmented and Virtual Reality in Immersive Healthcare;pp.475-497
Restricted Access; Hardcopy may be available in the library
https://doi.org/10.1002/9781394302864.ch17 https://www.scopus.com/pages/publications/105032087172?origin=resultslist
Kunnumpurath B., Department of Media Studies, CHRIST (Deemed to be University), Bengaluru, India; Paul A., Department of Media Studies, CHRIST (Deemed to be University), Bengaluru, India; Menon V.A., Department of Education, Institute for Educational and Developmental Studies (IEDS), Uttar Pradesh, Noida, India
Evaluating Sentiment Classification Models for Bollywood Movies
Bollywood; Gradient boosting machines; Movie reviews; Random forest model; Sentiment analysis; Sentiment classification
The rise in popularity of Bollywood cinema, fueled by streaming services such as Netflix and Amazon Prime, has increased the global availability of Hindi-language films. This study investigates the sentiment analysis of Bollywood movie reviews using a dataset of 1,698 movies released between 2005 and 2017. The research examines three main dimensions: confusion matrix, evaluation metric, and random forest model. The results highlight the model's ability to accurately predict emotions, especially when detecting neutral and positive emotions. Challenges in identifying negative emotions persist. The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
Kunnumpurath, Biju; Reddy, Baddala Govardhan; Menon, Vishnu Achutha; Paul, Ajith
Lecture Notes in Networks and Systems;Volume;1275;pp.161-169
Springer Science and Business Media Deutschland GmbH
https://doi.org/10.1007/978-981-96-2694-6_11 https://www.scopus.com/pages/publications/105007225467?origin=resultslist
Kunnumpurath B., Christ University, Bengaluru, India; Reddy B.G., Christ University, Bengaluru, India; Menon V.A., Institute for Educational and Developmental Studies, Uttar Pradesh, Gautambuddha Nagar, India; Paul A., Christ University, Bengaluru, India
Deforestation, Climate Change and the Sustainability of Agriculture: A Review
agricultural sensitivity; agroforestry; climate change adaptability; climate change exposure; deforestation; sustainability
This study aims to survey the literature and factual evidence on the nexus between deforestation and agriculture through an assessment of the potential impacts of climate change in the context of the world, India, and the Western Ghats. The Western Ghats region was chosen for this study because of its deep ecological significance. A few underlying themes were created and findings were documented under each theme that ranged from the causes of deforestation, the transformation of forest land for agriculture, the nexus between agriculture, deforestation and climate change, climate-driven agricultural vulnerability and the reconciliation of forest protection with agriculture. These findings suggest that shifting agriculture has been a dominant source of deforestation. The primary climatic impacts on agriculture are seen through crop yield falls. Indias arid and semiarid tropical regions have witnessed high climate-driven agricultural sensitivity. This could be on account of the fact that Indias tropical forests have witnessed high deforestation. The presence of higher tree densities in areas under Joint Forest Planning and Management in the Western Ghats create the potential for sparing remaining land areas for non-forest uses such as agriculture. 2024, Editorial office of Journal of Resources and Ecology. All rights reserved.
Journal of Resources and Ecology, Vol-15, No. 1, pp. 140-150.
Editorial office of Journal of Resources and Ecology
Kunte G., Department of Economics, Christ (Deemed to be University), Dharmaram College Post, Karnataka, Bangalore, 560029, India; Bhat V., Department of Economics, Christ (Deemed to be University), Dharmaram College Post, Karnataka, Bangalore, 560029, India
Fuzzy Logic-AHP Hybrid Model for Faculty Performance Evaluation to Enhance Educational Quality in Higher Education
Analytic Hierarchy Process (AHP); Criteria Weighting; Educational Quality; Faculty Performance Evaluation; Fuzzy Inference System; Fuzzy Logic; Higher Education Analytics; Hybrid Model; Intelligent Decision Support System; Machine Learning in Education; Membership Functions; Multi-Criteria Decision Making; Robustness Analysis; Sensitivity Analysis
Guaranteeing equitable and precise evaluation of teacher performance is a continual challenge in higher education, as subjective discrimination, uneven metrics, and absence of cohesive frameworks frequently obstruct informed decision-making. A hybrid Fuzzy Logic-Analytic Hierarchy Process (AHP) model is developed to integrate systematic requirement weighting through AHP with the uncertainty management features of fuzzy logic. The method assesses faculty performance across various dimensions, including classroom effectiveness, research output, service involvement, and professional advancement. The integration guarantees impartiality in criterion weighing and adaptability in managing qualitative assessments, resulting in a balanced and thorough evaluation method. The proposed hybrid framework, in contrast to standard models, reduces subjectivity, improves interpretability, and provides greater accuracy in prediction. Experimental findings indicate that the model attains an Accuracy of 96.8%, Precision of 97.2%, Recall of 96.5%, F1score of 96.8%, and AUC of 0.98, surpassing baseline methods like Decision Trees, Logistic Regression, and Support Vector Machines. These findings confirm the resilience and flexibility of the proposed methodology in practical teacher evaluation contexts. The research enhances educational quality and facilitates the integration of hybrid decision-support systems into institutional policy-making and future academic performance evaluations. 2025 IEEE.
Kunwar, Fateh Bahadur; John, Tegil J.; Krishna, G. Venkata; Reddy, Kotte Amaranadha; Srinivas, T. Aditya Sai; Bharti, Sandeep
2025 IEEE International Conference on Emerging Trends in Computing and Communication, ETCOM 2025;
https://doi.org/10.1109/ETCOM66606.2025.11436403 https://www.scopus.com/pages/publications/105037395939?origin=resultslist
Kunwar F.B., Greater Noida Institute of Technology, Department of Computer Science and Engineering, Uttar Pradesh, Greater Noida, India; John T.J., Christ University, Department of Computer Science, Karnataka, Bengaluru, India; Krishna G.V., Prasad V Potluri Siddhartha Institute of Technology, Department of CSE (AI&ML), Vijayawada, India; Reddy K.A., School of Advanced Sciences, Kalasalingam Academy of Research and Education, Department of Mathematics, Tamil Nadu, Virudhunagar, India; Srinivas T.A.S., Ravindra College of Engineering for Women, Department of CSE, Kurnool, India; Bharti S., Deewan College, Department of Computer Science and Engineering (CSE), Uttar Pradesh, Meerut, India
New developments in the study of parity signed graphs
A signed graph has all its edges signed with either negative or positive signs. Parity signed graphs are generated from the integer labeling of the vertices of a graph. An edge gets a positive sign if its end vertices are of the same parity and gets a negative sign if its end vertices are of the opposite parity. Signed graphs which admit parity labeling can be characterized. All parity signed graphs are balanced but not the converse. 2020 Author(s).
https://doi.org/10.1063/5.0016781 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85095568712&doi=10.1063%2f5.0016781&partnerID=40&md5=a7d3b8e84a3775b673c50fb461e78e31
Kureethara J.V., CHRIST, Deemed to Be University, Bangalore, India
Teacher Education: An Analytical Approach to Internship Practices Around the World, pp. XVIII-XIX.
Kureethara J.V., Centre for Research Christ University, India