Deposition and characterization of ZnO/CdSe/SnSe ternary thin film based photocatalyst for an enhanced visible light-driven photodegradation of model pollutants
Dye degradation; Photocatalysis; Thin film; ZnO/CdSe/SnSe heterostructure
A heterogeneous photocatalytic pathway is a possible approach to global energy and environmental issues. Sol-gel spin coating and physical vapour deposition were used to create a new ternary ZnO/CdSe/SnSe nanocomposite thin film photocatalyst. X-ray diffractometry, energy-dispersive X-ray spectroscopy (EDS), field emission-scanning electron microscopy, UV-Vis, and photoluminescence (PL) spectrophotometers were used to characterize the deposited films. When exposed to solar light, the ternary photocatalyst exhibits high photocatalytic activity in photocatalytic dye degradation processes. it demonstrates excellent visible light absorption, enhanced charge carrier separation, and solar light simulation. It was proposed that the charge in the ternary ZnO/CdSe/SnSe photocatalyst moves in a double type-II and cascade manner between the various components. In this study, ternary thin film heterostructures are synthesized, exhibiting outstanding stability and solar light-induced photocatalytic activity.The thin film composed of ZnO/CdSe/SnSe exhibits a degradation efficiency of 96% when exposed to visible light, and a degradation efficiency of 90% for methylene blue under sunlight within a time period of 150 min. Graphical Abstract: (Figure presented.) The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Deepthi V.; Sebastian A.; Vidhya B.; Mathew T.A.; Beula R.J.; Suryakanth J.
Journal of Sol-Gel Science and Technology, Vol-109, No. 2, pp. 362-375.
Deepthi V., Department of Physics and electronics, Christ university, Karnataka, Bangalore, 560029, India, Department of Physics, Karunya Institute of Technology and Sciences, Coimbatore, 641 114, India; Sebastian A., Department of Physics, Karunya Institute of Technology and Sciences, Coimbatore, 641 114, India; Vidhya B., Department of Physics, Karunya Institute of Technology and Sciences, Coimbatore, 641 114, India, Centre for Nanoscience and Genomics, Karunya Institute of Technology and Sciences, Coimbatore, 641 114, India; Mathew T.A., Department of Physics and electronics, Christ university, Karnataka, Bangalore, 560029, India; Beula R.J., Department of Physics, Karunya Institute of Technology and Sciences, Coimbatore, 641 114, India; Suryakanth J., Department of Physics, KPR Institute of Engineering and Technology Arasur, Tamil Nadu, Coimbatore, 641407, India
AI-based online proctoring: a review of the state-of-the-art techniques and open challenges
Artificial intelligence; Covid-19; Machine learning; Online monitoring; Pandemic; Testers
So far, this pandemic has severely affected the education sector. As education undergoes a brilliant transformation with advancing technology, the digital acquisition of knowledge has yet to find widespread use - virtual exams. Faraway Proctoring offers several advantages of using manual and primarily based technology. Although this allows students to take an exam in any field with specific technical requirements, it eliminates the need for physical research centers. It is cost-effective and easy to plan, which can be challenging to manage, especially during aggressive trials. Finally, the paper discusses the performance characteristics of different styles of web-based inspection systems, along with their limitations and challenges. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Aurelia S.; Thanuja R.; Chowdhury S.; Hu Y.-C.
Multimedia Tools and Applications, Vol-83, No. 11, pp. 31805-31827.
Aurelia S., Department of Computer Science, CHRIST Deemed University, Bangalore, India; Thanuja R., Department of CSE, Sastra Deemed University, SRC Campus, Kumbakonam, India; Chowdhury S., Department of Computer Science and Engineering, Sreenivasa Institute of Technology and Management Studies, Andra Pradesh, Chittoor, India; Hu Y.-C., Department of Computer Science, Tunghai University, Taichung City, Taiwan, Department of Computer Science and Information Management, Providence University, Taichung City, Taiwan
Ricci solitons on Riemannian manifolds admitting certain vector field
53C21; 53C25; 53C44; Conformal vector field; Gradient Ricci almost soliton; Ricci almost soliton; Ricci soliton
In this paper, we initiate the study of impact of the existence of a unit vector ?, called a concurrent-recurrent vector field, on the geometry of a Riemannian manifold. Some examples of these vector fields are provided on Riemannian manifolds, and basic geometric properties of these vector fields are derived. Next, we characterize Ricci solitons on 3-dimensional Riemannian manifolds and gradient Ricci almost solitons on a Riemannian manifold (of dimension n) admitting a concurrent-recurrent vector field. In particular, it is proved that the Riemannian 3-manifold equipped with a concurrent-recurrent vector field is of constant negative curvature -?2 when its metric is a Ricci soliton. Further, it has been shown that a Riemannian manifold admitting a concurrent-recurrent vector field, whose metric is a gradient Ricci almost soliton, is Einstein. Universitdegli Studi di Napoli "Federico II" 2021.
Ricerche di Matematica, Vol-73, No. 1, pp. 531-546.
https://doi.org/10.1007/s11587-021-00622-z https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111133811&doi=10.1007%2fs11587-021-00622-z&partnerID=40&md5=ce065df5cc30619935f4dfed3ba4036a
Naik D.M., Department of Mathematics, CHRIST (Deemed to be University), Karnataka, Bengaluru, India
Comparing the Accuracy of CNN Model with Inception V3 for Music Instrument Recognition
Deep Learning; Machine Learning; Mel Frequency Cepstral Coefficients; Music Instrument recognition
Identification of music instruments from an audio signal is a complex but useful task in music information retrieval. Deep Learning and traditional machine learning models are extremely very useful in many music related tasks such as music genre classification, recognizing music similarity, identifying the singer etc. Music Instrument recognition and classification would be helpful in categorizing different categories of music. Many researchers have proposed models for classifying western music instruments. But very little research has been done in identifying instruments accompanied with South Indian music. This research aims at identifying string instrument such as violin and woodwind instrument such as flute accompanied in a Carnatic music concert and also in other categories of music. In order to identify the instruments accompanied, Convolutional Neural Network model and Inception V3 models were used. The Mel Frequency Cepstral Coefficients images were extracted from the audio input and fed in to the neural network model. The model has been trained for the above mentioned instruments, tested and validated on different types of audio input. This research also evaluates the performance of Inception V3 transfer learning model with CNN model in recognizing the instruments used in different categories of music. 2024, Ismail Saritas. All rights reserved.
International Journal of Intelligent Systems and Applications in Engineering, Vol-12, No. 17s, pp. 276-282.
Renju K., Department of Computer Science, Research Scholar, CHRIST(Deemed to be University), Karnataka, India; Ashok Immanuel V., Department of Computer Science, Research Scholar, CHRIST(Deemed to be University), Karnataka, India
A novel approach to study generalized coupled cubic SchringerKorteweg-de Vries equations
CNLS equation; KdV equation; Long and short waves; Modified Sardar sub-equation method; Solitons
The Kortewegde Vries (KdV) equation represents the propagation of long waves in dispersive media, whereas the cubic nonlinear Schringer (CNLS) equation depicts the dynamics of narrow-bandwidth wave packets consisting of short dispersive waves. A model that couples these two equations seems intriguing for simulating the interaction of long and short waves, which is important in many domains of applied sciences and engineering, and such a system has been investigated in recent decades. This work uses a modified Sardar sub-equation procedure to secure the soliton-type solutions of the generalized cubic nonlinear SchringerKorteweg-de Vries system of equations. For various selections of arbitrary parameters in these solutions, the dynamic properties of some acquired solutions are represented graphically and analyzed. In particular, the dynamics of the bright solitons, dark solitons, mixed bright-dark solitons, W-shaped solitons, M-shaped solitons, periodic waves, and other soliton-type solutions. Our results demonstrated that the proposed technique is highly efficient and effective for the aforementioned problems, as well as other nonlinear problems that may arise in the fields of mathematical physics and engineering. 2022
Akinyemi L.; Veeresha P.; Darvishi M.T.; Rezazadeh H.; ?enol M.; Akpan U.
Journal of Ocean Engineering and Science, Vol-9, No. 1, pp. 13-24.
https://doi.org/10.1016/j.joes.2022.06.004 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132504407&doi=10.1016%2fj.joes.2022.06.004&partnerID=40&md5=116dcc11e9251a01150e13c5b09652bf
Akinyemi L., Department of Mathematics, Lafayette College, Easton, PA, United States; Veeresha P., Department of Mathematics, Christ Deemed to be University, Bengaluru, 560029, India; Darvishi M.T., Department of Mathematics, Razi University, Kermanshah, 67149, Iran; Rezazadeh H., Faculty of Engineering Technology, Amol University of Special Modern Technologies, Amol, Iran; ?enol M., Department of Mathematics, Nev?ehir Hac? Bekta? Veli University, Nev?ehir, Turkey; Akpan U., Drexel University, Department of Mathematics, Philadelphia, PA, United States
A hybrid crypto-compression model for secure brain mri image transmission
Chaotic map; Cryptography; DNA encoding; Generative adversarial networks; Security
Medical image encryption is a major issue in healthcare applications where memory, energy, and computational resources are constrained. The modern technological architecture of digital healthcare systems is, in fact, insufficient to handle both the current and future requirements for data. Security has been raised to the highest priority. By meeting these conditions, the hybrid crypto-compression technique introduced in this study can be used for securing the transfer of healthcare images. The approach consists of two components. In order to construct a cutting-edge generative lossy compression system, we first combine generative adversarial networks (GANs) with oearned compression. As a result, the second phase might address this problem by using highly effective picture cryptography techniques. A randomly generated public key is subjected to the DNA technique. In this application, pseudo-random bits are produced by using a logistic chaotic map algorithm. During the substitution process, an additional layer of security is provided to boost the techniques fault resilience. Our proposed system and security investigations show that the method provides trustworthy and long-lasting encryption and several multidimensional aspects that have been discovered in various public health and healthcare issues. As a result, the recommended hybrid crypto-compression technique may significantly reduce a photos size and remain safe enough to be used for medical image encryption. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Padhy S.; Dash S.; Shankar T.N.; Rachapudi V.; Kumar S.; Nayyar A.
Multimedia Tools and Applications, Vol-83, No. 8, pp. 24361-24381.
Padhy S., School of Computing Science and Engineering, VIT Bhopal University, Bhopal-Indore Highway, Kothrikalan, Madhya Pradesh, Sehore , 466114, India; Dash S., Department of Computer Science and Engineering, GIET University, Odisha, Gunupur, India; Shankar T.N., Department of Computer Engineering and Technology, Dr. Vishwanath Karad MIT World Peace University, Maharashtra, Pune, India; Rachapudi V., Department of Computer Science and Engineering, Koneru Lakshmaiah Education Foundation, Andhra Pradesh, Guntur, Vaddeswaram, India; Kumar S., Department of Computer Science and Engineering, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Nayyar A., Graduate School, Duy Tan University, Da Nang, Viet Nam, Faculty of Information Technology, Duy Tan University, Da Nang, Viet Nam
On families of graphs which are both adjacency equienergetic and distance equienergetic
05C50; 05C76; Distance energy; Distance equienergetic graphs; Equienergetic graphs; Graph energy
Let A(G) and D(G) be the adjacency and distance matrices of a graph G respectively. The adjacency energy or A-energy EA(G) of a graph G is defined as the sum of the absolute values of the eigenvalues of A(G). Analogously, the D-energy ED(G) is defined to be the sum of the absolute values of the eigenvalues of D(G). One of the interesting problems on graph energy is to characterize those graphs which are equienergetic with respect to both the adjacency and distance matrices. A weaker problem is to construct the families of graphs which are equienergetic with respect to both the adjacency and distance matrices. In this paper, we find the explicit relations between A-energy and D-energy of certain families of graphs. As a consequence, we provide an answer to the above open problem (Indulal in https://icgc2020.wordpress.com/invitedlectures, 2020; http://www.facweb.iitkgp.ac.in/rkannan/gma.html, 2020) The Indian National Science Academy 2022.
Ramane H.S.; Parvathalu B.; Ashoka K.; Pirzada S.
Indian Journal of Pure and Applied Mathematics, Vol-55, No. 1, pp. 198-209.
Ramane H.S., Department of Mathematics, Karnatak University, Karnataka, Dharwad, 580003, India; Parvathalu B., Department of Mathematics, Christ University, Karnataka, Bangalore, 560029, India; Ashoka K., Department of Mathematics, Karnatak Universitys Karnatak Arts College, Karnataka, Dharwad, 580001, India; Pirzada S., Department of Mathematics, University of Kashmir, Kashmir, Srinagar, 190006, India
Exploring Mortality Salience and Pandemic Impact in the Context of COVID-19
COVID-19; death; goal prioritization; mortality salience; news consumption
Mortality salience refers to a state of conscious awareness of death and the inevitable conclusion of life, associated with psychological terror. The COVID-19 pandemic generated increased awareness of illness and death, and effectuated changes in death cognitions and peoples experiences around psychological or sociocognitive domains of media and life goals. To understand these changes, this study administered the Multidimensional Mortality Awareness Measure (Levasseur et al., 2015) to 103 emerging adults in India, post which 6 participants proceeded for a semi-structured interview exploring pandemic experiences, news consumption and goal prioritization, to examine specific areas in relation to death cognition. The thematic analysis demonstrates psychological effects, and discusses developments in health and death-related psychological processes. Focus on career goals and health maintenance, cautious news consumption and disadvantageous impacts on mental health are seen, significant in navigating healthcare measures for emerging adults, as we move forward into this new normal. The Author(s) 2021.
Omega (United States), Vol-88, No. 3, pp. 889-907.
All Open Access; Hybrid Gold Open Access
Paul D., Department of Psychology, Christ (Deemed to be University), Bengaluru, India; Vasudevan M.H., Department of Psychology, Christ (Deemed to be University), Bengaluru, India
Photocatalytic driven self-cleaning IPN membranes infused with a host-guest pair consisting of metal-organic framework encapsulated anionic nano-clusters for water remediation
Antimicrobial; Interpenetrating polymer networks; Metal-organic framework; Photocatalytic membrane; Polyoxometalate; Self-cleaning; Water treatment
Traditional water treatment membranes frequently encounter challenges in attaining an ideal equilibrium between permeability and selectivity. The performance of membranes is further hampered by hydrophobicity, scalability, and fouling problems, as well as excessive energy consumption. Hence, the current research is dedicated to the development of highly effective antifouling membranes, aiming for a significant balance between water permeance and separation efficiency, and featuring exceptional photocatalytic self-cleaning properties to ensure the sustainable reuse of membranes. In this study, a unique nanocomposite-based membrane is designed containing metal-organic frameworks (MOFs) MIL-101 (Fe) encapsulated copper-containing polyoxometalate (Cu-POM) incorporated into an interpenetrating polymer networks (IPNs) membrane. POMs are highly electronegative, oxo-enriched nanosized metal-oxygen cluster species and when composited with MOF yields POMOF which can help in the removal of pollutants from water through electrostatic site-specific binding. The IPN membrane designed by polymerizing aniline in the presence of polyvinylidene fluoride (PVDF) offers tunable pores of the membrane. The infusion of POMOF imparts a strong negative charge to the membrane surface, improving membrane hydrophilicity. This enhances pollutant removal through the Donnan exclusion principle and adds anti-fouling properties. Furthermore, the reduced pore size achieved by the IPN architecture in the POMOF@IPNs membrane effectively sieves out both cationic and anionic dyes, as well as pharmaceutical pollutants. Additionally, POMOF enhances the photocatalytic degradation of CR and MB dyes, coupled with essential self-cleaning attributes vital for separation processes. The IPNs structure, apart from housing POMOF, fortifies the membrane's mechanical strength with its distinctive network-like configuration. Furthermore, these advanced membranes showcase robust antibacterial and antiviral characteristics, while remaining non-cytotoxic to mammalian cells. Our findings indicate that the state-of-the-art POMOF@IPNs membrane is scalable and holds substantial promise for industrial wastewater treatment. 2024 Elsevier B.V.
Dutta S.; Patel B.G.M.; Singh Y.; Hegde G.; Bose S.
https://doi.org/10.1016/j.memsci.2024.122422 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182907943&doi=10.1016%2fj.memsci.2024.122422&partnerID=40&md5=34bda78dcbbcac82e1515a248f6f053c
Dutta S., Department of Materials Engineering, Indian Institute of Science, Karnataka, Bengaluru, 560012, India; Patel B.G.M., Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India, Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Singh Y., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Hegde G., Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India, Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Bose S., Department of Materials Engineering, Indian Institute of Science, Karnataka, Bengaluru, 560012, India
Optimized deep maxout for breast cancer detection: consideration of pre-treatment and in-treatment aspect
CT images; Fuzzy filter; Hierarchical DBSCAN (density-based clustering algorithm); Shark optimized deep Maxout neural network; Smell indulged shuffled shepherd optimization (SSISSO)
Breast cancer is one of the deadliest diseases, accounting for the second-highest rate of cancer mortality among females. Breast tissue begins to develop cancerous, malignant lumps as the disease progresses. Self-examinations and routine clinical checks aid in early diagnosis, which considerably increases the likelihood of survival. Because of this, we have created a revolutionary method for finding breast cancer that has the following four steps. Fuzzy filters are used in the initial pre-processing stage to reduce noise and improve outcomes from the incoming data. In the second stage, we have presented an Improved Hierarchical DBSCAN (Density-based clustering algorithm) for the segmentation of anomalous areas. Feature extraction will be carried out following segmentation. We have also developed a better kurtosis-based feature to complement traditional statistical and shape-based features and deliver better results. The Optimized Deep Maxout Neural Network is used for classification in the final step, with the suggested Shark Smell Indulged Shuffled Shepherd Optimization used to optimize the weight parameter (SSISSO). At 90% the learning percentage of the proposed model SSISSO model has achieved 0.984391 accuracy, which is superior to 22.54%, 28.46%, 17.44%, 17%, 15.04%, 13.28%, 29.45%, 28.59%, 21.58%, and 30.72% as compared to other methods like SVM-BS1, CNN-BS7, LSTM, NN, Bi-GRU, RNN, ARCHO, AOA, HGS, CMBO, SSOA, and SSO. Finally, the results of the proposed breast cancer detection technique are compared with conventional techniques. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Multimedia Tools and Applications, Vol-83, No. 10, pp. 31017-31047.
Rajput D., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560074, India; Bejoy B.J., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, 560074, India
Synergistic effects of CuO/TiO2-chitosan-farnesol nanocomposites: Synthesis, characterization, antimicrobial, and anticancer activities on melanoma cells SK-MEL-3
anticancer; farnesol; mitochondrial membrane potential; nanocomposites; ROS; skin cancer
The current investigation focuses on synthesizing copper oxide (CuO)-titanium oxide (TiO2)-chitosan-farnesol nanocomposites with potential antibacterial, antifungal, and anticancer properties against Melanoma cells (melanoma cells [SK-MEL-3]). The nanocomposites were synthesized using the standard acetic acid method and subsequently characterized using an X-ray diffractometer, scanning electron microscope, transmission electron microscopy, and Fourier transform infrared spectroscopy. The results from the antibacterial tests against Streptococcus pneumoniae and Stapylococcus aureus demonstrated significant antibacterial efficacy. Additionally, the antifungal studies using Candida albicans through the agar diffusion method displayed a considerable antifungal effect. For evaluating the anticancer activity, various assays such as MTT assay, acridine orange/ethidium bromide dual staining assay, reactive oxygen species (ROS) generation assay, and mitochondrial membrane potential (MMP) analysis were conducted on SK-MEL-3 cells. The nanocomposites exhibited the ability to induce ROS generation, decrease MMP levels, and trigger apoptosis in SK-MEL-3 cells. Collectively, the findings demonstrated a distinct pattern for the synthesized bimetallic nanocomposites. Furthermore, these nanocomposites also displayed significant (p < 0.05) antibacterial, antifungal, and anticancer effects when tested on the SK-MEL-3 cell line. 2023 Wiley-VCH GmbH.
Indumathi T.; Suriyaprakash J.; Alarfaj A.A.; Hirad A.H.; Jaganathan R.; Mathanmohun M.
Journal of Basic Microbiology, Vol-64, No. 2
ISSN: 0233111X; PubMed ID: 37988658; CODEN: JBMIE
https://doi.org/10.1002/jobm.202300505 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85177439365&doi=10.1002%2fjobm.202300505&partnerID=40&md5=72ab3adda5e797a9390d61d32f850ce1
Indumathi T., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India; Suriyaprakash J., Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, China; Alarfaj A.A., Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia; Hirad A.H., Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia; Jaganathan R., Microbiology Unit, Preclinical Department, Faculty of Medicine, Royal College of Medicine Perak (UniKL-RCMP), Universiti Kuala Lumpur, Ipoh, Malaysia; Mathanmohun M., Department of Microbiology, Muthayammal College of Arts and Science, Rasipuram, Tamil Nadu, Namakkal, India
Magnetically retractable tea extract stabilized palladium nanoparticles for denitrogenative cross-coupling of aryl bromides with arylhydrazines under green conditions: An alternate route for the biaryls synthesis
Aryl hydrazines; Biphenyls; Denitrogenative coupling; Green condition; Heterogeneous catalysis; Magnetic nanocatalyst
Novel palladium based magnetic nanocatalyst was synthesized by the co-precipitation method and coated with silica and tea extract as stabilizing agent. Palladation onto the prepared nanocomposite was done to get ION-SiO2/TE-Pd(0) catalyst. Our study is one of the limited number of studies reported for the catalytic denitrogenative coupling of arylbromide and arylhydrazine. This led to the construction of important substituted biaryls bearing various substituents with 8292% yields. The synthesized nanocatalyst was characterized using structural and morphological characterization techniques. It was also observed that only 2 mol% of ION-SiO2/TE-Pd(0) catalyst was sufficient for the catalysis and reusable upto six cycles. 2024 The Authors
https://doi.org/10.1016/j.catcom.2024.106862 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184781427&doi=10.1016%2fj.catcom.2024.106862&partnerID=40&md5=17f87374a0d15ad55987bdb23051b508
Hegde S., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; Nizam A., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India
Implementation of survivability aware protocols in WSN for IoT applications using Contiki-OS and hardware testbed evaluation
Contiki; Hardware testbed; IoT; MAC; Routing; WSN
The Internet of Things is a network of devices capable of operating and communicating individually and working for a specific goal collectively. Technologically, many networking and computing mechanisms have to work together with a common objective for the IoT applications to function, and many sensing and actuating devices have to get connected to the Internet backbone. The networks of resource-constrained sensor devices constitute an integral part of IoT application networks. Network survivability is a critical aspect to consider in the case of a network of low-power, resource-constrained devices. Algorithms at different layers of the protocol stack have to work collectively to enhance the survivability of the application network. In this article, the survivability-aware protocols for wireless sensor networks for IoT applications are implemented in real network scenarios. The routing strategy, Survivable Path Routing protocol, and the channel allocation technique, Survivability Aware Channel Allocation, are implemented in Contiki-OS, the open-source operating system for IoT. Furthermore, the implementation scenarios are tested with the FIT IoT Lab hardware testbed. Simulated results are compared with the results obtained from the testbed evaluation. 2023 Elsevier B.V.
Microprocessors and Microsystems, Vol-104
https://doi.org/10.1016/j.micpro.2023.104988 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181722277&doi=10.1016%2fj.micpro.2023.104988&partnerID=40&md5=c818ef06c2fde9429d584d0fc31301dc
Elappila M., CHRIST (Deemed to be University), Department of Computer Science and Engineering, Karnataka, Bengaluru, 560074, India; Chinara S., National Institute of Technology Rourkela, Department of Computer Science and Engineering, Odisha, Sundergarh, 769008, India
Reinforcement learning strategies using Monte-Carlo to solve the blackjack problem
Blackjack; Dynamic programming; Monte Carlo; Q-learning; Reinforcement learning; Temporal difference
Blackjack is a classic casino game in which the player attempts to outsmart the dealer by drawing a combination of cards with face values that add up to just under or equal to 21 but are more incredible than the hand of the dealer he manages to come up with. This study considers a simplified variation of blackjack, which has a dealer and plays no active role after the first two draws. A different game regime will be modeled for everyone to ten multiples of the conventional 52-card deck. Irrespective of the number of standard decks utilized, the game is played as a randomized discrete-time process. For determining the optimum course of action in terms of policy, we teach an agent-a decision maker-to optimize across the decision space of the game, considering the procedure as a finite Markov decision chain. To choose the most effective course of action, we mainly research Monte Carlo-based reinforcement learning approaches and compare them with q-learning, dynamic programming, and temporal difference. The performance of the distinct model-free policy iteration techniques is presented in this study, framing the game as a reinforcement learning problem. 2024 Institute of Advanced Engineering and Science. All rights reserved.
Srinivasaiah R.; Biju V.G.; Jankatti S.K.; Channegowda R.H.; Jinachandra N.S.
International Journal of Electrical and Computer Engineering, Vol-14, No. 1, pp. 904-910.
Institute of Advanced Engineering and Science
https://doi.org/10.11591/ijece.v14i1.pp904-910 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183612671&doi=10.11591%2fijece.v14i1.pp904-910&partnerID=40&md5=dc957d43a99266da491571b17f26867d
Srinivasaiah R., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST Deemed to be University, Bengaluru, India; Biju V.G., MAI, Faculty of Computer Science and Business Informatics, University of Applied Sciences, Wzburg-Schweinfurt, Germany; Jankatti S.K., Department of Computer Science and Technology, Dayananda Sagar University, Bengaluru, India; Channegowda R.H., Department of Electronics and Communication Engineering, Dayananda Sagar Academy of Technology and Management, Bengaluru, India; Jinachandra N.S., Department of Mechanical Engineering, School of Engineering and Technology, CHRIST Deemed to be University, Bengaluru, India
A weighted-Weibull distribution: Properties and applications
brittle strength data; dirichlet eta function; failure data; maximum likelihood estimation; Weibull distribution; wind speed data
The paper describes a two parameter model and its relationship to the widely used Weibull model. Mathematical properties of the distribution like survival and hazard functions, moments, harmonic and geometric means, Shannon entropy and mean residual life are derived. Different methods of estimation are discussed and a simulation study is performed to verify the efficiency of estimation methods. Applications of our distribution in different scenarios observed in real life areillustrated. 2023 John Wiley & Sons Ltd.
Quality and Reliability Engineering International, Vol-40, No. 2, pp. 863-875.
https://doi.org/10.1002/qre.3439 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85170526679&doi=10.1002%2fqre.3439&partnerID=40&md5=fc50942b468ab2318fdb9b385469ebbb
Xavier T., Department of Statistics and Data Science, CHRIST (Deemed to be University), Bangalore, India; Nadarajah S., Department of Mathematics, University of Manchester, Manchester, United Kingdom
RF-ShCNN: A combination of two deep models for tumor detection in brain using MRI
Adaptive wiener filter; Brain tumor; Conditional random fields; Deep residual network; Fractional calculus; MRI; Shepherd convolution neural network
The tumor in the brain is the reason for jagged cell enlargement in the brain. Magnetic resonance imaging (MRI) is a common scheme to identify tumor existence in the brain. With these MRIs, the medical practitioner can examine and detect the abnormal growth of tissues and corroborate if the brain is influenced by a tumor or not. Due to the appearance of artificial intelligence models, the discovery of brain tumor is performed by adapting different models which thereby help in making decisions and selecting the most suitable diagnosis for patients. The main motivation of this work is to reduce the death rate. If they are not adequately treated, the survival rate of the patient decreases. The correct diagnoses help patients receive accurate treatments and survive for a long time. This paper develops a hybrid model, namely the Residual fused Shepherd convolution neural network (RF-ShCNN) for discovering tumor in the brain considering MRI. Thus, the Adaptive wiener filtering is adapted to filter image-commencing noise. Thereafter, Conditional Random Fields-Recurrent Neural Networks (CRF-RNN) are adapted for segmentation followed by the mining of essential features. Lastly, the features employed in RF-ShCNN for making effective brain tumor detection by means of MRI. Thus, the RF-ShCNN is built by unifying the deep residual network and Shepherd convolution neural network. The hybridization is done by adding a regression layer wherein the regression is fused with Fractional calculus (FC) to make effective detection. The RF-ShCNN provided better accuracy of 94%, sensitivity of 95% and specificity of 94.9%. 2023
Balasubramanian S.; Mandala J.; Rao T.V.M.; Misra A.
Biomedical Signal Processing and Control, Vol-88
https://doi.org/10.1016/j.bspc.2023.105656 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175637596&doi=10.1016%2fj.bspc.2023.105656&partnerID=40&md5=08264d5aa9ab240b86f54848a3353e73
Balasubramanian S., Computer Science and Engineering, Jain (Deemed-to-be University), Faculty of Engineering and Technology, Ramanagar District, Karnataka, 562112, India; Mandala J., Department of Computer Science and Engineering, Christ (Deemed to be) University, Bangalore, India; Rao T.V.M., Department of Computer Science and Engineering, Vignan's Institute of Information Technology, Visakhapatnam, India; Misra A., School of Computer Application, Lovely Professional University, Jalandhar Delhi G.T. Road, Phagwara, Punjab, 144411, India
Process of Emotion Regulation in Indian Couples During Gottmans Dreams-Within-Conflict Intervention: A Mixed-Methods Design Study
Dyadic analysis; Emotion regulation strategies; Expression; Gottman couple therapy; HLM; Marital intervention; Suppression; Thematic analysis
Gottman Couple Therapy (GCT) is based on 40 + years of empirical findings and advocates process research, enabling an understanding of how an intervention works. Dreams-within-Conflict (DWC) is a GCT technique that softens the stand on unresolvable issues by facilitating positive emotion regulation strategies such as expressing vulnerabilities, understanding, and soothing in place of destructive strategiessuch as criticism and defensiveness. The aim of the study is to understand the emotion regulation process during a one-session DWC intervention using a convergent parallel mixed-methods design examining N = 30 individuals (15 couples) during the DWC intervention. The changes in emotion regulation strategies (Extrinsic/Intrinsic affect Worsening/Improving strategiesEW, IW, EI, II) in partners were examined in the presence of individual characteristics of emotion regulation traits (cognitive-reappraisal and suppression) and beliefs using self-assessment questionnaires, feedback reports, thematic coding of video recordings, and a semi-structured interview. Paired-samplest-test results showed that DWC fosters emotion regulation strategies by significantly decreasing partners EW and increasing EI and II strategies. Though IW strategies declined during-DWC, the changes were not significant. Hierarchical linear modeling findings showed that before-DWC emotion regulation strategies, gender, and individual emotion regulation traits of cognitive-reappraisal and suppression predicted EI, and before-DWC strategies predicted II, but none of the variables predicted EW and IW during-DWC. To further understand the interventional implications, the emotional regulation strategies and preferences for expression (over suppression) shared by the Indian couples were examined using thematic analysis. The results show that avoidance, conflict behaviors, and prioritizing parents emotions over partners (in men) were the most often employed regulatory strategies. Simultaneously, Indian couples unanimously agreed that expression of emotions was a crucial factor for marital satisfaction. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Rajendrakumar J.; Manjula V.; Rajan S.K.
Contemporary Family Therapy, Vol-46, No. 1, pp. 112-138.
https://doi.org/10.1007/s10591-023-09671-y https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162052823&doi=10.1007%2fs10591-023-09671-y&partnerID=40&md5=d1b52917e7ed5fd66b20e291cde4ab05
Rajendrakumar J., Department of Psychology, Christ (Deemed to be University), Dharmaram College Post, Hosur Road, Bengaluru, 560029, India; Manjula V., Department of Clinical Psychology, Manipal College of Health Professions, Manipal, India; Rajan S.K., Department of Psychology, Christ (Deemed to be University), Dharmaram College Post, Hosur Road, Bengaluru, 560029, India
Assessing Land Use Transformation in Kanhangad Town: A Special Emphasis on Wetland Ecosystems
Conservation and Preservation; Eco-system; Land Use; Wetland
Kerala, renowned for its lush landscapes, is facing environmental challenges due to rapid urbanization, particularly in Kanhangad. This area, notable for its unique wetland ecosystem crucial for biodiversity and human livelihoods, is experiencing a conflict between residential development and wetland conservation. A comprehensive study in Kanhangad, employing diverse data sources such as open-source data, Google Earth Satellite Imagery, OpenStreetMap, and tools like ArcGIS, provides a detailed analysis of land use and its environmental impacts. The study combines digital data analysis with physical surveys to understand the ecological and developmental status comprehensively. The study reveals a dominant trend in Kanhangad's land use, with residential areas comprising 52% of the total land, mostly large, detached single-family homes. This reflects a societal shift towards viewing homes as status symbols, contributing to natural resource depletion. The research underscores the need for sustainable, low-cost housing, suggesting vertical housing as a potential solution to balance residential demands with environmental conservation. Kanhangad's wetlands, essential for local biodiversity and livelihoods, face threats from urban development and infrastructural expansion. The study shows a drastic reduction in wetland area, from 12.9 km in 2004-05 to just 1.66 km by 2020-21, indicating severe ecological degradation. Despite the Kerala Conservation of Paddy land and Wetland Act of 2008, which aims to protect these ecosystems, its limited effectiveness is evident from the ongoing depletion of wetlands. This situation calls for stricter enforcement of environmental regulations and greater public involvement in conservation efforts. Furthermore, the research examines the Kerala Paddy and Wetland Conservation Act-2008, analysing its role and effectiveness in local environmental governance. The Act, focusing on prohibiting wetland and paddy land conversion, is vital for regional conservation. However, gaps in its implementation are highlighted, especially considering the exacerbation of the 2018 and 2019 Kerala floods due to land conversion practices. The study emphasizes the urgent need for more robust environmental protection measures. 2024 by authors. All rights reserved.
Abhilash M.P.; Sooraj G.; Kumara H.S.; Ajai Chandran C.K.
Environment and Ecology Research, Vol-12, No. 1, pp. 27-39.
https://doi.org/10.13189/eer.2024.120104 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184717805&doi=10.13189%2feer.2024.120104&partnerID=40&md5=0a45a57315fc17805ce8e82c980aca93
Abhilash M.P., Town and Country Planning Department, Government of Karnataka, India; Sooraj G., Department of Urban Planning, Lovely School of Architecture and Planning, Lovely Professional University, India; Kumara H.S., School of Planning and Architecture, University of Mysore, India; Ajai Chandran C.K., School of Architecture, Christ Deemed to be University, India
Comparative electrochemical investigation for scheelite structured metals tungstate (MWO4 (M = Ni, Cu and Co)) nanocubes for high dense supercapacitors application
Chemical reflux; Energy storage; Metal tungstate; retentivity; Scheelite structure; Specific capacitance
Scheelite structured metal tungstate MWO4 (M = Ni, Cu and Co) nanocubes were synthesized through the chemical reflux for supercapacitors application and ceyltrimethylammonium bromide (C-TAB) as surfactant. In X-ray diffraction (XRD) result are fit with relevant JCPDS cards, synthesized materials are closely matched with monoclinic and triclinic crystal phase corresponding to NiWO4, CoWO4 and CuWO4 with Scheelite type structure. To resist the growth of the particles and succeeding nanocubes morphology were achieving by using PEG-400 and C-TAB act as a surfactant. The prepared modified electrodes were examined electrochemical analysis after successive coating of working material in empty Ni foil. From the galvanostatic charge-discharge (GCD) comparative analysis, fast ions movements are interacts through the aqueous electrolyte medium with nanocubes NiWO4 electrode are achieving specific capacitance of 1185 Fg?1 at 0.5 Ag?1 and cyclic stability 93.084 % (retentivity) formerly compare to CuWO4 and CoWO4 electrodes. 2023
Nagavenkatesh K.R.; Murugesan M.; Sambathkumar C.; Nallamuthu N.; Devendran P.; Krishna kumar M.
https://doi.org/10.1016/j.est.2023.110153 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85180533299&doi=10.1016%2fj.est.2023.110153&partnerID=40&md5=7d44993194bb1f5d369822ef1c5cccc0
Nagavenkatesh K.R., Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India; Murugesan M., Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India; Sambathkumar C., Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India; Nallamuthu N., Dayananda Sagar Academy of Technology and Management, Bangalore, Uthayapura, 560082, India; Devendran P., Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, India; Krishna kumar M., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560 029, India
A Progressive UNDML Framework Model for Breast Cancer Diagnosis and Classification; [Un modelo marco progresivo UNDML para el diagntico y clasificaci del ccer de mama]
Breast Cancer Detection; CNN; Feature Extraction; Mammograms; Preprocessing; Segmentation
According to recent research, it is studied that the second most common cause of death for women worldwide is breast cancer. Since it can be incredibly difficult to determine the true cause of breast cancer, early diagnosis is crucial to lowering the diseases fatality rate. Early cancer detection raises the chance of survival by up to 8 %. Radiologists look for irregularities in breast images collected from mammograms, X-rays, or MRI scans. Radiologists of all levels struggle to identify features like lumps, masses, and micro-calcifications, which leads to high false-positive and false-negative rates. Recent developments in deep learning and image processing give rise to some optimism for the creation of improved applications for the early diagnosis of breast cancer. A methodological study was carried out in which a new Deep U-Net Segmentation based Convolutional Neural Network, named UNDML framework is developed for identifying and categorizing breast anomalies. This framework involves the operations of preprocessing, quality enhancement, feature extraction, segmentation, and classification. Preprocessing is carried out in this case to enhance the quality of the breast picture input. Consequently, the Deep U-net segmentation methodology is applied to accurately segment the breast image for improving the cancer detection rate. Finally, the CNN mechanism is utilized to categorize the class of breast cancer. To validate the performance of this method, an extensive simulation and comparative analysis have been performed in this work. The obtained results demonstrate that the UNDML mechanism outperforms the other models with increased tumor detection rate and accuracy. 2024; Los autores.
Meenalochini G.; Guka D.A.; Sivasakthivel R.; Rajagopal M.
https://doi.org/10.56294/dm2024198 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184859032&doi=10.56294%2fdm2024198&partnerID=40&md5=9183b43afb88749713dc4cb3808e6a52
Meenalochini G., School of Computing, Kalasalingam Academy of Research and Education, Tamil Nadu, Krishnankoil, India; Guka D.A., School of Computing, Kalasalingam Academy of Research and Education, Tamil Nadu, Krishnankoil, India; Sivasakthivel R., Department of Computer Science, School of Sciences, CHRIST (Deemed to be University), Bangalore, India; Rajagopal M., Lean Operations and Systems, School of Business and Management, CHRIST (Deemed to be University), Bangalore, India