A multi-preference integrated algorithm for deep learning based recommender framework
collaborative filtering; deep learning; long term preferences; recommender systems; short-term preferences
Nowadays, the online recommender systems based collaborative filtering methods are widely employed to model long term user preferences (LTUP). The deep learning methods, like recurrent neural networks (RNN) have the potential to model short-term user preferences (STUP). There is no dynamic integration of these two models in the existing recommender systems. Therefore, in this article, a multi-preference integrated algorithm (MPIA) for deep learning based recommender framework (DLRF) is proposed to perform the dynamic integration of these two models. Moreover, the MPIA addresses improper data and to improve the performance for creating recommendations. This algorithm is depending on an enhanced long short term memory (LSTM) with additional controllers to consider relative information. Here, experiments are carried out by Amazon benchmark datasets, then obtained outcomes are compared with other existing recommender systems. From the comparison, the experimental outcomes show that the proposed MPIA outperforms existing systems under performance metrics, like area under curve, F1-score. Consequently, the MPIA can be integrated with real time recommender systems. 2022 John Wiley & Sons, Ltd.
Jaishankar B.; Naveen J.; Marimuthu B.; Jayabalan B.; Mathivanan M.
Concurrency and Computation: Practice and Experience, Vol-34, No. 25
https://doi.org/10.1002/cpe.7241 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135799527&doi=10.1002%2fcpe.7241&partnerID=40&md5=a65c163ea9dab7307f99afb88a3abc52
Jaishankar B., Department of Electronics and Communication Engineering, KPR Institute of Engineering and Technology, Coimbatore, India; Naveen J., Department of Computer Science and Engineering, CHRIST (Deemed to be University), Bengaluru, India; Marimuthu B., Department of Computer Science and Engineering, CHRIST (Deemed to be University), Bengaluru, India; Jayabalan B., Department of MCA, School of CS & IT, JAIN (Deemed to be University), Bengaluru, India; Mathivanan M., Department of Electronics and Communication Engineering, ACS College of Engineering, Karnataka, Bengaluru, India
A Meta-Analysis on the Determinants of Online Product Reviews with Moderating Effect of Product Type
decision-making; e-commerce; helpfulness; Meta-analysis; online reviews
The technological advances in digital space have provided a renewed impetus for business to expand their footprint across digital modes. The growth of the internet and the ease of its access to the masses has encouraged many businesses to go online. Online e-commerce platforms make it easy to search, locate and place orders. Technology-assisted supply chains and fast delivery mechanisms ensure that users don't have to go elsewhere to fulfill their needs. To earn loyalty and customer satisfaction, e-commerce platforms have evolved into a sophisticated recommender system. It has evolved from just an informational source to a participative mode where users can share their experiences about their purchases. Customer values other user experiences more than the information provided by the seller. The presence of many conflicting and contradicting reviews can make the task of making rational decisions difficult for many users. Many studies were performed to understand what constitutes a review helpful and came up with different or mixed outcomes. The present study reviews the factors that influence online customer reviews helpful. Meta-analysis was performed to reconcile the mixed findings of different factors of online review helpfulness. The meta-analysis found that with the moderating effect of product type, factors like review length, readability, rating, reputation, and expertise positively correlate with helpfulness. Further, the customer finds moderate reviews more helpful in terms of polarity. Meta-analysis has a mix of findings for the selected data points in the study. The mixed findings include product type (search, experience, or other) and helpfulness measurement criteria. 2022 Kavita Rawat and Sunita Kumar. This is an open access article licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.
Academic Journal of Interdisciplinary Studies, Vol-11, No. 6, pp. 313-323.
All Open Access; Hybrid Gold Open Access
https://doi.org/10.36941/ajis-2022-0170 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142338987&doi=10.36941%2fajis-2022-0170&partnerID=40&md5=7b2261feea405301a6181e7a1da21bd2
Rawat K., School of Business & Management, CHRIST (Deemed to be University), Dharmaram College Post, Hosur Road, Karnataka, Bengaluru, 560029, India; Kumar S., School of Business & Management, CHRIST (Deemed to be University), Dharmaram College Post, Hosur Road, Karnataka, Bengaluru, 560029, India
Effect of Copper and Cobalt Metal Complex Redox Mediator Based Xanthan Gum Gel Electrolyte Materials on Performance of Dye Sensitized Solar Cells
Aqueous gel electrolytes; DFT Studies; Dye-sensitized solar cells; Organic ligands; Redox mediators
In this study, we report the first application of (4-(tert-butyl) benzyl or 4-methyl benzyl)-substituted 2-(pyridin-2-yl)-1H-benzo[d]-imidazole coordinated copper and cobalt redox shuttles Cu [((tbb) pbi)2]+1/+2, Cu [(mbpbi)2]+1/+2, Co [((tbb) pbi)3]+2/+3 and Co [(mbpbi)3]+2/+3 based xanthan gum gel electrolytes (XGE-1, XGE-2, XGE-3 and XGE-4) in fabrication of Dye sensitized solar cells. Interestingly, XGE-1 and XGE-2 obtained higher efficiency of 4.08 and 3.04 % under 1sun illumination. Specifically, highly donor moiety 4-(tert-butyl)benzyl)-substituted (on N?H position) 2-(pyridin-2-yl)-1H-benzo[d]-imidazole ligands coordinated, Cu [((tbb) pbi)2]+1/+2 gel electrolyte achieved best performance due to its appropriate redox potential of 0.80 V versus Normal Hydrogen Electrode. This high performance also confirmed with the interfacial studies of the devices. As per the computational results, the copper redox mediators conquered lower reorganization energy and free energy about (0.11-0.20 & 0.180.27 eV) due to the effect of ligands structure. Overall, Cu [((tbb) pbi)2]+1/+2 act as redox shuttle for highly proficient DSSCs. 2022 Wiley-VCH GmbH.
Selvaraj B.; Shanmugam G.; Kamaraj S.; Thirugnanasambandam E.; Peters S.; Gunasekeran A.; Sambandam A.; Pillai R.S.
https://doi.org/10.1002/slct.202203197 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142355244&doi=10.1002%2fslct.202203197&partnerID=40&md5=4956fca5c6450986b6ef73a5b220cbb2
Selvaraj B., Advanced inorganic chemistry laboratory Department of Chemistry, Faculty of Engineering and Technology, SRM Institute and Science and Technology SRM Nagar, Kancheepuram District, Tamil Nadu, Kattankulathur, 603203, India; Shanmugam G., Advanced inorganic chemistry laboratory Department of Chemistry, Faculty of Engineering and Technology, SRM Institute and Science and Technology SRM Nagar, Kancheepuram District, Tamil Nadu, Kattankulathur, 603203, India; Kamaraj S., Advanced inorganic chemistry laboratory Department of Chemistry, Faculty of Engineering and Technology, SRM Institute and Science and Technology SRM Nagar, Kancheepuram District, Tamil Nadu, Kattankulathur, 603203, India; Thirugnanasambandam E., Advanced inorganic chemistry laboratory Department of Chemistry, Faculty of Engineering and Technology, SRM Institute and Science and Technology SRM Nagar, Kancheepuram District, Tamil Nadu, Kattankulathur, 603203, India; Peters S., Advanced inorganic chemistry laboratory Department of Chemistry, Faculty of Engineering and Technology, SRM Institute and Science and Technology SRM Nagar, Kancheepuram District, Tamil Nadu, Kattankulathur, 603203, India; Gunasekeran A., Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tamilnadu, Tiruchirappalli, 620 015, India; Sambandam A., Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tamilnadu, Tiruchirappalli, 620 015, India; Pillai R.S., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India
Architecture of FTO/n-CdS/p-SnSe1-xOx/Au Heterojunction Thin Film Diodes by Thermal Evaporation
currentvoltage characteristics; diode; Oxygen-doped SnSe thin film; thermal evaporation
In this report, FTO/n-CdS/p-SnSe1-xOx/Au heterojunction diodes were fabricated using a homemade precursor followed by dry milling with a facile thermal evaporation method under oxygen atmosphere (10? 2mbar) for the first time. The chemical purity (45.35:45.07:9.58 at.%) and microstructure of the deposited films and device were characterized by energy dispersive x-ray analysis, x-ray photoelectron spectroscopy, and scanning electron microscopy. The crystallographic parameters, a = 11.512 b = 4.163and c = 4.452 with orthorhombic crystal structure and monophase nature were analyzed by powder x-ray diffraction. Raman spectroscopy revealed the vibrational modes, and UVVis-NIR spectroscopy was used to study the direct nature of optical absorption with a band gap of 1.14eV. The currentvoltage (I-V) characteristics of the semiconductor diode were measured in room temperature (25C) and revealed rectifying properties and the cut-off voltage for the device, 0.57V. The obtained results highlight that the use of a p-SnSe1-xOx (SSO) layer as an interface between n-CdS/Au diodes exhibits excellent rectifying behavior and enhanced diode performance. Therefore, the p-SSO layer is a suitable material for heterojuction diodes and optoelectronic switches. Graphical Abstract: [Figure not available: see fulltext.]. 2022, The Minerals, Metals & Materials Society.
Journal of Electronic Materials, Vol-51, No. 12, pp. 6827-6834.
John B., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Vardhurajaperumal S., Center for Nanoscience and Engineering (CeNSE), Indian Institute of Science, Bangalore, India
do- matic partition; Graph energy; independent partition; k-ply domatic partition; P-matrix; partition matrix; total domatic partition
For a given graph G, its P-energy is the sum of the absolute values of the eigenvalues of the P-matrix of G. In this article, we explore the P-energy of generalized Petersen graphs G(p; k) for various vertex partitions such as independent, domatic, total domatic and k-ply domatic partitions and partition containing a perfect matching in G(p; k). Further, we present a python program to obtain the P-energy of G(p; k) for the vertex partitions under consideration and examine the relation between them. 2022 The authors.
Communications in Combinatorics and Optimization, Vol-7, No. 1, pp. 1-16.
https://doi.org/10.22049/CCO.2021.27102.1197 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121915858&doi=10.22049%2fCCO.2021.27102.1197&partnerID=40&md5=5d7ec16e07992efabdbb70c7d97bb46a
Joshi P.B., Department of Mathematics, CHRIST(Deemed to be University), Bengaluru, India; Joseph M., Department of Mathematics, CHRIST(Deemed to be University), Bengaluru, India
Camouflaged Protocols of Womanhood: Inherent Paradoxes of Bengal
Culture; Discourse; Identity; Media; Subjective
Contemporary India is part of a global community where modernizationand urbanization including consumerism is on the rise; but not leaving behind its historic cultural essence. Old scriptures, myths, folklore, literature, cultural proverbs as well as media, have a noteworthy role in shaping the perspectives of Indian people. The current study was done in parts of urban Bengal to explore the influence of these forces from socio-political, psychological as well as philosophical registers, in shaping the self-image and identity of contemporary women. 50 participants were interviewed using a semi-structured in-depth interview method and data were analyzed following qualitative analytical methods keeping the cultural-relational-social context in perspective. The method of pluralism in the qualitative analysis was followed using three data analysis methodsGrounded Theory, Interpretative Phenomenological Approach, and Narrative Analysis. Analyses revealed anintriguing social-crafting of theconcepts of gender and identities of women through idealization and internalization of traits and notions incessantly presented through celebrated literature, myths, folklore, proverbs, and media. Furthermore, the analysis showed how the deep-rooted paradox, inherent in Bengals cultural discourse, is internalized even by educated urban women and infuses a sense of lack, vulnerability, self-loathing, blame, and stigma in their identity. On the contrary, it was also observed in a few instances that optimum use of media and global knowledge led to the construction of a new-age individual and subjective discourse. 2022, The Author(s) under exclusive licence to National Academy of Psychology (NAOP) India.
Psychological Studies, Vol-67, No. 4, pp. 488-500.
Chakraborty R., Department of Psychology, CHRIST (Deemed to Be University), Bengaluru, India; De S., Department of Psychology, University of Calcutta, Kolkata, India
The efficient fractional order based approach to analyze chemical reaction associated with pattern formation
BelousovZhabotinsky reaction; Caputo fractional derivative; Chaotic behaviors; Numerical method
The investigation of the nonlinear models and their complex nature with generalized theory associated to material and history-based properties is a motivation for the present work. The mathematical model describing the chemical reaction, namely BelousovZhabotinsky (BZ) reaction is examined in the present work using the efficient numerical method. For the obtained numerical results, the change of color and patterns formation is presented in a different order. The impact of the rate change is presented for the diverse associated parameters. For the considered system, the boundedness, stability, existence, and other dynamical conditions are derived. The consequences of generalizing the model within the fractional order are derived. The present study helps researchers to investigate complex real world problems and predict the corresponding plans to be made using the efficient approach. 2022 Elsevier Ltd
https://doi.org/10.1016/j.chaos.2022.112862 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141746078&doi=10.1016%2fj.chaos.2022.112862&partnerID=40&md5=c6abd4ce1119aab91c31e8aaceaa2c1a
Veeresha P., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India
Thermo-solutal Marangoni convective assisting/resisting flow of a nanofluid with radiative heat flux: A model with heat transfer optimization
The mixed Marangoni assisting/resisting flow of a nanofluid with thermal radiative heat flux is analyzed when thermal and solutal buoyant forces are significant. The heat and mass transfer rates are simultaneously optimized by utilizing the Response Surface Methodology (RSM). The face-centered Central Composite Design (fc-CCD) is used for the numerical experimental design involved in RSM. The sensitivities of the heat and mass transfer rates are evaluated to compare the impact of the thermal and solutal buoyant forces. Appropriate scaling and similarity transformations are utilized to simplify the problem and then numerical solutions are obtained. The nanoliquid flow, temperature, and concentration profiles are plotted for the buoyancy assisting and opposing Marangoni cases. The Marangoni flow with opposite buoyancy is found to have a greater magnitude of velocity while the flows assisted by the buoyancy have a greater magnitude of temperature and concentration profiles. Thermal buoyancy force has a predominant (0.6%) impact on both heat and mass transfer rates compared to solutal buoyancy force. Buoyancy forces are positively sensitive to heat and mass transfer rates. The thermal radiation aspect augments the temperature profile throughout the domain. The optimized mass and heat transfer rates ((Formula presented.) and (Formula presented.)) is achieved at the highest level of the buoyancy forces and ratio of Marangoni numbers. 2022 Wiley-VCH GmbH.
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik, Vol-102, No. 11
https://doi.org/10.1002/zamm.202100504 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137040037&doi=10.1002%2fzamm.202100504&partnerID=40&md5=68ceab4848cd63207eb18e67610c517e
Mackolil J., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, India; Basavarajappa M., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, India, School of Mathematical and Statistical Sciences, The University of Texas Rio Grande Valley, Edinburg, 78539, TX, United States
Effective proactive routing protocol using smart nodes system
Data monitoring; Degree restricted trees; Wireless sensor network
Small Power Restricted Unit (PRU) platform known as the Wireless Sensor Network (WSN) to monitor a Large Region of Interest (ROI) and send data to the Base Station (BS). Accurately capturing the ROI and communicating observed information to the BS over the longest period is indeed the main problem facing WSN. Despite the latest introduction of many power routing algorithms in regular monitoring applications, the variable environment and complex environment for WSN applications end up creating these procedures as an important task. This study Degree Restricted Tree (DRE) nodes for such networks, including a BS outside of the ROI in a homogeneous pre-emptive WSN. The optimal degree of a node with low DRT energy consumption is determined because the degree of a node affects the network lifespan of these forms of connections. To provide an equitable distribution of the burden in terms of transmission power, this study then suggests a Joint Decentralized Antenna (JDA) algorithm which is based on several antenna theories. With an optimum node density and DRT base, JDA is made for frequent surveillance systems with real-time applications. The results validate our research, which emphasizes that the network throughput of DRT is doubled when utilizing optimum node angles as opposed to certain other node degrees. Additionally, it has been demonstrated that introducing JDA into DRT with ideal network density increases the network's latency thus eliminating the proportion between the unstable period and the lifetime of the network in halves. Additionally, it displays a 25% improvement in network lifespan and the lowest rate of node loss when compared to the existing system ensuring that halves of nodes are still alive just a few rounds even before the lifetime of the network expires. 2022 The Authors
Venkatanaresh M.; Yadav R.; Thiyagarajan D.; Yasotha S.; Ramkumar G.; Varma P.S.
https://doi.org/10.1016/j.measen.2022.100456 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139025539&doi=10.1016%2fj.measen.2022.100456&partnerID=40&md5=c43562b03cc000e0657d5549de660364
Venkatanaresh M., Department of ECE, SreeVidyanikethan Engineering College, Tirupati, 517102, India; Yadav R., Department of Electronics and Communication Engineering, Government Polytechnic Daman, UT Administration of Dadra and Nagar Haveli and Daman and Diu, India; Thiyagarajan D., Department of Artificial Intelligence and Machine Learning, School of Engineering, Malla Reddy University, Maisammaguda, Dulapally, Telangana, Hyderabad, 500043, India; Yasotha S., Department of Computer Science and Engineering, Sri Eshwar College of Engineering, Kinathukadavu, Tamil Nadu, Coimbatore, 641202, India; Ramkumar G., Department of Commerce, School of Commerce, Finance and Accountancy, Christ University, Bangalore, India; Varma P.S., Dept of Computer Science and Engineering, University College of Engineering, Adikavi Nannaya University, Andhra Pradesh, Rajahmundry, 533296, India
Unraveling the synergy between oxygen doping and embedding Fe nanoparticles in gC3N4 towards enhanced photocatalytic rates
Doping; gC3N4; Intermediate band; Ultra-thin nanosheets
With graphitic carbon nitride (gC3N4) showing considerable potential for photocatalytic applications, the four significant limitations: surface area, light-harvesting capability, photogenerated charge separation, and charge transfer at the interface, need to be comprehensively addressed. The present work aims to exfoliate the gC3N4 stacking layers and fragment the layers horizontally to form ultra-thin nanosheets (NS) by a facile mixed-acid treatment. The surface area of gC3N4 increased by one order of magnitude (120 m2/g), due to the formation of nanosheets with planar size below ?50 nm. Moreover, incorporating non-metal (oxygen) anion dopants and metal (iron) nanoparticles enhances the overall reactivity of gC3N4 NS under light irradiation. Co-integration of these strategies led to ?17 times improvement in the photocatalytic pollutants degradation rate compared to pristine gC3N4. First-principles calculations and experimental evidence suggest the formation of an intermediate band within the bandgap of gC3N4, caused by the hybridization of N-Fe-O, which assists in harvesting a larger number of photons. Nanosheet morphology provides a shorter distance to photogenerated charges towards the surface, while the incorporation of Fe and O together offers the lowest charge transfer resistance at the interface to efficiently degrade the adsorbed pollutant molecules on the surface. With all these promoting features along with cost-effective and stable elements, Fe-O-gC3N4 NS provides an ideal solution for tuning the intrinsic morphological and electronic structure of gC3N4 for its effective application in various photocatalytic reactions. 2022
Yadav A.; Gupta S.; Bhagat B.R.; Yadav M.; Dashora A.; Varma R.S.; Thorat N.; Patel R.; Patel N.
https://doi.org/10.1016/j.apsusc.2022.154404 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135415516&doi=10.1016%2fj.apsusc.2022.154404&partnerID=40&md5=7660733a92e92da491818d6c01e35aa7
Yadav A., Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India; Gupta S., Advanced Materials Department, Joef Stefan Institute, Ljubljana, 1000, Slovenia; Bhagat B.R., Physics Department, Faculty of Science, The M.S. University of Baroda, Vadodara, 390002, India; Yadav M., Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India; Dashora A., Physics Department, Faculty of Science, The M.S. University of Baroda, Vadodara, 390002, India; Varma R.S., Department of Chemistry, Institute of Chemical Technology, Matunga, 400 019, India; Thorat N., Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, 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
An Anomaly Detection Framework for Twitter Data
anomaly detection; outlier detection; sentiment analysis; social media analytics; topic modeling
An anomaly indicates something unusual, related to detecting a sudden behavior change, and is also helpful in detecting irregular and malicious behavior. Anomaly detection identifies unusual events, suspicious objects, or observations that differ significantly from normal behavior or patterns. Discrepancies in data can be observed in different ways, such as outliers, standard deviation, and noise. Anomaly detection helps us understand the emergence of specific diseases based on health-related tweets. This paper aims to analyze tweets to detect the unusual emergence of healthcare-related tweets, especially pre-COVID-19 and during COVID-19. After pre-processing, this work collected more than 44 thousand tweets and performed topic modeling. Non-negative matrix factorization (NMF) and latent Dirichlet allocation (LDA) were deployed for topic modeling, and a query set was designed based on resultant topics. This query set was used for anomaly detection using a sentence transformer. K-means was also employed for clustering outlier tweets from the cleaned tweets based on similarity. Finally, an unusual cluster was selected to identify pandemic-like healthcare emergencies. Experimental results show that the proposed framework can detect a sudden rise of unusual tweets unrelated to regular tweets. The new framework was employed in two case studies for anomaly detection and performed with 78.57% and 70.19% accuracy. 2022 by the authors.
Kumar S.; Khan M.B.; Hasanat M.H.A.; Saudagar A.K.J.; AlTameem A.; AlKhathami M.
Applied Sciences (Switzerland), Vol-12, No. 21
https://doi.org/10.3390/app122111059 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141860286&doi=10.3390%2fapp122111059&partnerID=40&md5=4c87807537ebd56110bb7cf8419644f1
Kumar S., Department of Computer Science and Engineering, CHRIST (Deemed to be University), Bangalore, 560074, India; Khan M.B., Information Systems Department, College of Computer and Information Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia; Hasanat M.H.A., Information Systems Department, College of Computer and Information Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia; Saudagar A.K.J., Information Systems Department, College of Computer and Information Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia; AlTameem A., Information Systems Department, College of Computer and Information Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia; AlKhathami M., Information Systems Department, College of Computer and Information Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia
Glancing angle sputter deposited tungsten trioxide (WO3) thin films for electrochromic applications
Coloration efficiency; Diffusion coefficient; Electrochromism; Glancing angle deposition; Transmittance; Tungsten oxide films
The columnar growth angle-dependent tungsten oxide (WO3) thin films were grown by using the Glancing angle sputter deposition (GLAD) technique with varying different substrate angles (00, 700, 750, and 800) on Fluorine-doped tin oxide (FTO) and Corning glass (CG) corning glass substrates at room temperature. The surface morphology, crystallographic structure, optical, and electrochemical properties were determined using X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), UltravioletVisible(UVVis) spectrometer, and electrochemical analyzer, respectively. The structural properties reveal that the films are amorphous in nature. FE-SEM studies observed the columnar growth of the nano-rods and surface porosity. The optical transmittance of the deposited films was decreased from 83 to 78%, and the optical bandgap decreased from 3.08 to 2.88eV with increasing GLAD angle. The electrochemical studies reveal that the GLAD angle influenced the coloration efficiency (CE). The highest CE of 32cm2/C at 600nm and highest Diffusion coefficient (DC) of 6.529 109 cm2s?1 of the films was observed for the films deposited at an angle of 750. 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
Naveen Kumar K.; Shaik H.; Madhavi V.; Imran Jafri R.; Gupta J.; Nithya G.; Sattar S.A.; Ashok Reddy G.V.
Applied Physics A: Materials Science and Processing, Vol-128, No. 11
Springer Science and Business Media Deutschland GmbH
Naveen Kumar K., Department of Physics, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India, Center for Nanomaterials and MEMS, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India; Shaik H., Department of Physics, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India, Center for Nanomaterials and MEMS, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India; Madhavi V., Interdisciplinary Centre for Energy Research, Indian Institute of Science, Bangalore, 560012, India; Imran Jafri R., Department of Physics and Electronics, Christ University, Hosur Road, Bangalore, 560029, India; Gupta J., Department of Physics, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India, Center for Nanomaterials and MEMS, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India; Nithya G., Center for Nanomaterials and MEMS, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India, Department of ECE, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India; Sattar S.A., Department of Physics, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India; Ashok Reddy G.V., Department of Physics, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore, 560064, India, Department of Physics, SJB Institute of Technology, Kengeri, Karnataka, Bangalore, 560060, India
Enzyme immobilization on biomass-derived carbon materials as a sustainable approach towards environmental applications
Biocatalyst; Biomass-derived carbon materials; Environmental applications; Enzyme immobilization; Wastewater treatment
Enzymes with their environment-friendly nature and versatility have become highly important green tools with a wide range of applications. Enzyme immobilization has further increased the utility and efficiency of these enzymes by improving their stability, reusability, and recyclability. Biomass-derived matrices when used for enzyme immobilization offer a sustainable solution to environmental pollution and fuel depletion at low costs. Biochar and other biomass-derived carbon materials obtained are suitable for the immobilization of enzymes through different immobilization strategies. Environmental pollution has become an utmost topic of research interest due to an ever-increasing trend being observed in anthropogenic activities. This has widely contributed to the release of various toxic effluents into the environment in their native or metabolized forms. Therefore, more focus is being directed toward the utilization of immobilized enzymes in the bioremediation of water and soil, biofuel production, and other environmental applications. In this review, up-to-date literature concerning the immobilization and potential uses of enzymes immobilized on biomass-derived carbon materials has been presented. 2022 Elsevier Ltd
Bijoy G.; Rajeev R.; Benny L.; Jose S.; Varghese A.
ISSN: 456535; PubMed ID: 35870606; CODEN: CMSHA
https://doi.org/10.1016/j.chemosphere.2022.135759 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136695446&doi=10.1016%2fj.chemosphere.2022.135759&partnerID=40&md5=c82c899698aa40ae4c2a374fda83c494
Bijoy G., CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Rajeev R., CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Benny L., CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Jose S., CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Varghese A., CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India
CoFe2O4-APTES nanocomposite for the selective determination of tacrolimus in dosage forms: Perspectives from computational studies
APTES; Cobalt ferrite nanoparticles; Dosage forms; Electrochemical determination; Tacrolimus
An innovative and cost effective electrochemical sensor was fabricated to determine tacrolimus (TAC) in pharmaceutical samples. In the present study, cobalt ferrite nanoparticles (CFO) were synthesized hydrothermally using chitosan as the template and were further functionalized using (3-Aminopropyl) triethoxysilane (APTES). The synthesized CFO were characterized using various analytical techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, vibrating sample magnetometry and high- resolution transmission electron microscopy. The CFO and CFO-APTES were further drop-casted on to the glassy carbon electrode (CFO-NH2/GCE) for the electrochemical determination of TAC. Under the optimum conditions, the CFO-NH2/GCE showed a very low detection limit of 0.03 nM with a high sensitivity of 21,448 ?A?M?1cm?2 and a wide linear TAC concentration range of 0.14 nM 75.83 nM. The proposed sensor showed good sensitivity, selectivity, reproducibility and stability for the sensing of TAC and this has been demonstrated by analysing TAC in different dosage forms. This is the first study to report the interaction of CFO-TAC and CFO-NH2-TAC at the electrode/electrolyte interface. To support the experimental findings qualitatively, extensive density functional theory simulations were carried out to study the interaction at the interface. Hence the proposed sensor is very selective and sensitive towards the detection of TAC. 2022 Elsevier B.V.
Agnihotri A.S.; Ann Maria C.G.; Varghese A.; Mane P.; Chakraborty B.; M N.
https://doi.org/10.1016/j.surfin.2022.102406 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140406930&doi=10.1016%2fj.surfin.2022.102406&partnerID=40&md5=d6149c7ec662429fcf64be9caf0bd04e
Agnihotri A.S., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India; Ann Maria C.G., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India; Mane P., Seismology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India; Chakraborty B., High pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India, Homi Bhabha National Institute, Mumbai, India; M N., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India
Phishing attack detection using Machine Learning
Machine learning; Phishing; Random forest classification
Phishing is a type of digital assault, which adversely affects people where the client is coordinated to counterfeit sites and hoodwinked to screen their touchy and private data which integrates watchwords of records, monetary data, ATM pin-card data, etc. Recently safeguarding touchy records, it's fragile to cover yourself from malware or web phishing. AI is an investigation of information examination and logical investigation of calculations has demonstrated outcomes. Contradicting phishing sprinters with remarkable perception and felonious outcomes comparable as care shops, and custom against phishing approaches. This paper examines the association of Machine Literacy routes in identifying phishing assaults and records their advantages and drawbacks. There are countless Machine Learning calculations that have been dug to proclaim the relevant decision that act as against phishing apparatuses. We made a phishing section framework that extracts capacities that are expected to descry phishing. We likewise utilize numeric outline, as well as an overall investigation of customary Machine Learning methodologies comparable as Decision Tree, Random Forest, Multi-layer Perceptron's, XG Boost Classifier, SVM, Light BGM Classifier, Cat Boost Classifier, and covering grounded highlights choice, which contains the metadata of URLs and assists with deciding if a site is licit or not. 2022 The Authors
Pandiyan S S.; Selvaraj P.; Burugari V.K.; Benadit P J.; P K.
https://doi.org/10.1016/j.measen.2022.100476 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138991143&doi=10.1016%2fj.measen.2022.100476&partnerID=40&md5=ad771e0a7b1d052f24f6131e0cdbfe45
Pandiyan S S., CHRIST (Deemed to Be University), Bangalore, India; Selvaraj P., School of CSE, VIT-AP University, Amaravati, India; Burugari V.K., Department of CSE, Koneru Lakshmaiah Education Foundation, K L University, Guntur, India; Benadit P J., CHRIST (Deemed to Be University), Bangalore, India; P K., Department of DSBS, SRM Institute of Science and Technology, Kattankulathur, Chennai, India
A Smartphone Coupled Freshness Indicator Prepared by Rub-coating of Hibiscus Flowers on Paper substrates for Visual Monitoring of the Spoilage of Milk
colorimetric interface; food spoilage monitoring; halochromic interface; milk quality; smartphone-based sensor
This study developed an inexpensive and easy-to-use milk freshness indicator (H-Paper) by rub-coating hibiscus flowers onto paper. As per the best of our knowledge, this is the first example of a food quality indicator prepared by direct hand-rubbing of a natural halochromic material onto paper substrates. Unlike the previously reported colorimetric indicators from natural sources, our indicator does not require the extraction of anthocyanins from the natural product. The H-Paper undergoes a quantifiable color change from green to purple to pink corresponding to fresh, spoiling, and spoiled milk samples. Digital photographs of H-Paper treated with milk samples were acquired using a smartphone, and RGB indices were analyzed using a free application. The red chromatic shift was used as a parameter to quantify color change of H-Paper to follow the spoilage of milk. Anthocyanins present in the hibiscus flowers are responsible for this colorimetric response. This work demonstrates a proof-of-concept for directly rub-coating halochromic materials onto a substrate to fabricate food freshness indicators. The H-Paper indicator has advantages of naked-eye analysis, consumer-friendliness, and instrument-free operation. This requires neither any laboratory accessories nor the expertise of a trained analyst for its preparation and operation, which is appropriate for use in resource-limited settings. 2022 Wiley-VCH GmbH.
https://doi.org/10.1002/slct.202201839 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141742065&doi=10.1002%2fslct.202201839&partnerID=40&md5=1eb54f4508f574d1b85f6c83e77ec4fa
Chaithra K.P., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Vinod T.P., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India
Surface tempering of poly-(3 thiophene acetic acid) coated carbon fiber paper electrode with spine-like cobalt inorganic phosphate: An efficacious electrochemical metol sensor
3- thiophene acetic acid; Conducting polymer; Electrochemical sensor; Metol; Organic pollutant; Surface modification
N-methyl-p-aminophenol sulfate (metol) is a photographic developing agent that has a toxic effect on humans and aquatic life. A cost-effective and sensitive electrochemical sensor was developed by electrodepositing Co-Pi over poly-(3 thiophene acetic acid) coated carbon fiber paper electrode (Co-Pi/PTAA/CFP) for the determination of metol (ML). Surface modification of Co-Pi facilitates superior electrocatalytic performance by offering more active sites and faster electron transport kinetics. The Physico-chemical characterization of the fabricated electrode was carried out by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) Field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray spectroscopy (EDS), Optical profilometer, Fourier transform infrared spectroscopy (FTIR), and electroanalytical techniques. The electrochemical studies were performed using Cyclic voltammetry (CV), Electron Impedance spectroscopy (EIS), and Differential pulse voltammetric (DPV). DPV studies revealed excellent sensing performance for ML, with a wide linear dynamic range of 6 nM to 800 nM, and a limit of detection (LOD) of 2 nM. A distinctive oxidative anodic peak was observed at 0.11 V indicating the excellent electrochemical performance of the electrode. The results suggested that the developed electrode exhibited good catalytic activity, selectivity, and sensitivity towards the electrochemical determination of ML. Further, the developed electrode was extended to its application in real samples obtained from lake water and domestic wastewater. 2022
Jose S.; George A.; Cherian A.R.; Varghese A.
https://doi.org/10.1016/j.surfin.2022.102416 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140963342&doi=10.1016%2fj.surfin.2022.102416&partnerID=40&md5=20c5b23803d903f5c479ae935c227db9
Jose S., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; George A., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; Cherian A.R., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India
Decision making framework for foreign direct investment: Analytic hierarchy process and weighted aggregated sum product assessment integrated approach
AHP; decision making framework; economy; FDI; WASPAS
Foreign direct investment (FDI) plays a paramount role in economic and social growth of every country. FDI acts as a source of external capital and helps in economic growth of the host country. Making decision for FDI during uncertain business environment is a challenge for all stakeholders. Therefore, in this study, we are proposing a decision making framework for FDI. Through literature review, we have identified the factors, on which FDI depends. A process-based, multi-criterion, integrated hierarchical approach for deciding about FDI, has been illustrated. In this study, five sectors are considered, that is, petroleum and natural resource, retailing and e-commerce, healthcare, information technology, and road and highways for illustrating the proposed framework. It is observed that information technology sector has got top priority for FDI followed by retailing and e-commerce and health care sector. Findings will help in taking appropriate decision by stakeholders for FDI. Ultimately it will also help in creating employment, economic growth, and welfare of society at large in the host country. 2021 John Wiley & Sons, Ltd.
Journal of Public Affairs, Vol-22, No. S1
https://doi.org/10.1002/pa.2771 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117722260&doi=10.1002%2fpa.2771&partnerID=40&md5=645084c838218c5bbabbdc0e3d40b3c0
Gupta S., Department of Decision Sciences, Jaipuria Institute of Management, Rajasthan, Jaipur, India; Jha B., School of Business and Management, Christ (Deemed to be University), NCR, Uttar Pradesh, Ghaziabad, India; Singh R.K., Management Development Institute, Haryana, Gurgaon, India
Electro-osmotic effect on the three-layer flow of Binary nanoliquid between two concentric cylinders
Differential transformation method; Electro- osmosis; Heat source/sink; Hybrid nanoliquid; Multilayer flow; Porous annulus
The three-layer flow of an immiscible nanoliquid in composite annulus with an electro-kinetic effect is analyzed using Buongiornos model. This model helps in analyzing the impact of two major phenomena, namely thermophoresis and Brownian motion. In this model, an interfacial layer is formed between the liquids due to the immiscibility of the base liquids. The use of a multilayer model especially in cooling systems brings more applications in many industries such as nuclear, biomedical, and solar. Different from the earlier studies on multilayer channel flow, this paper explains the three-layer flow between two concentric cylinders in the presence of cross-diffusion which makes the work unique. Further, the middle region is assumed to be porous and heat source or sink is applied to the entire system. Also, the flux conservation condition for nanoparticle volume fraction is considered. The equations governing the problem are simplified and are solved using the differential transform method. The results indicate that the electroosmotic parameter enhances the velocity but reduces the electrostatic potential. Further, the diffusion ratio improves the temperature and decreases the solute concentration of the fluid. 2022, Akadiai Kiad Budapest, Hungary.
Rajeev A.; Manjunatha S.; Vishalakshi C.S.
Journal of Thermal Analysis and Calorimetry, Vol-147, No. 24, pp. 15069-15081.
Springer Science and Business Media B.V.
Rajeev A., Department of Mathematics, CHRIST (Deemed to be University), Bangalore, India; Manjunatha S., Department of Sciences and Humanities, CHRIST (Deemed to be University), Bangalore, India; Vishalakshi C.S., Department of PG Studies, Government Science College, Chitrdurga, India
An efficient technique for generalized conformablePochhammerChree models of longitudinal wave propagation of elastic rod
Caputo derivative; Laplace transform; PochhammerChree model; q-homotopy analysis transform method
In this article, we introduce analytical-approximate solutions of time-fractional generalized Pochhammer-Chree equations for wave propagation of elastic rod by means of the q-homotopy analysis of the transform method (q-HATM). In the Caputo sense, basic concepts for fractional derivatives are defined. Several examples are given and the results are illustrated via some surface plots to present the physical representation. The results show that the current methodology is productive, powerful, efficient, easy to use, and ready to incorporate a wide variety of partial fractional differential equations. 2022, Indian Association for the Cultivation of Science.
Akinyemi L.; Veeresha P.; ?enol M.; Rezazadeh H.
Indian Journal of Physics, Vol-96, No. 14, pp. 4209-4218.
Akinyemi L., Department of Mathematics, Lafayette College, Easton, PA, United States; Veeresha P., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India; ?enol M., Department of Mathematics, Nev?ehir Hac? Bekta? Veli University, Nev?ehir, Turkey; Rezazadeh H., Faculty of Engineering Technology, Amol University of Special Modern Technologies, Amol, Iran