EXAMINING THE IMPACT OF IMPOSTOR PHENOMENON ON PSYCHOLOGICAL WELL-BEING AND PERCEIVED SOCIAL SUPPORT AMONG GRADUATE STUDENTS
impostor phenomenon; impostor syndrome; perceived social support; psychological well-being
Background: The mounting pressure to pursue novel endeavours, excel in academics and extracurriculars, improper mentoring, and looming deadlines have primarily been responsible for graduate students succumbing to the cut-throat competition prevalent in universities. In trying to keep up with the growing expectations, they may experience Impostor Phenomenon, which is often accompanied by feelings of unwarranted inadequacy and intellectual fraudulence-where students constantly question their capabilities despite evident success. Attributing their accomplishments to a stroke of luck, they believe they are not worthy of praise. These experiences of impostor phenomenon end up exacting a heavy toll on the mental well-being of graduate students and subsequently, their perceptions of available sources of social support. Purpose: In this context, the present investigation attempts to explore the impact of impostor phenomenon on psychological well-being and perceived social support among Indian graduate students; and analyze the gender differences in the experiences of impostor phenomenon. Design/Methodology/Approach: The sample consisted of 230 Indian graduate students (115 males and 115 females) aged 18-25 years, who had academic scores equivalent to, or above, 65%. Purposive sampling technique was employed to gather data using the Clance Impostor Phenomenon Scale, Ryffs Psychological Well-Being Scale, and the Multidimensional Scale of Perceived Social Support. Findings: Results of the study yielded that Impostor Phenomenon is a significant negative predictor of Psychological Well-Being, however no significant relationship was established with Perceived Social Support. No significant gender differences emerged from the data analysis. Conclusion: The results can be utilized heuristically to facilitate the identification of graduate students experiencing impostor phenomenon, provide early interventions, and prevent the culmination of the same into psychopathology, thus enriching the literature on this lesser-known phenomenon in an Indian context. 2022 RJ4All.
Youth Voice Journal, Vol-1, No. Special Issue, pp. 53-65.
Narain S., Christ (Deemed to be University), Delhi NCR, India; Mukherjee S., Centre for Behavioural and Cognitive Sciences (CBCS) on a Dyslexia project, India
Properties and Occurrence Rates for Kepler Exoplanet Candidates as a Function of Host Star Metallicity from the DR25 Catalog
methods: statistical; planets and satellites: formation; planets and satellites: general; stars: Abundances; stars: fundamental parameters
Correlations between the occurrence rate of exoplanets and their host star properties provide important clues about the planet formation process. We studied the dependence of the observed properties of exoplanets (radius, mass, and orbital period) as a function of their host star metallicity. We analyzed the planetary radii and orbital periods of over 2800 Kepler candidates from the latest Kepler data release, DR25 (Q1-Q17), with revised planetary radii based on Gaia DR2 as a function of host star metallicity (from the Q1-Q17 (DR25) stellar and planet catalog). With a much larger sample and improved radius measurements, we are able to reconfirm previous results in the literature. We show that the average metallicity of the host star increases as the radius of the planet increases. We demonstrate this by first calculating the average host star metallicity for different radius bins and then supplementing these results by calculating the occurrence rate as a function of planetary radius and host star metallicity. We find a similar trend between host star metallicity and planet mass: the average host star metallicity increases with increasing planet mass. This trend, however, reverses for masses >4.0 M J: host star metallicity drops with increasing planetary mass. We further examined the correlation between the host star metallicity and the orbital period of the planet. We find that for planets with orbital periods less than 10 days, the average metallicity of the host star is higher than that for planets with periods greater than 10 days. 2018. The American Astronomical Society. All rights reserved.
Narang M.; Manoj P.; Furlan E.; Mordasini C.; Henning T.; Mathew B.; Banyal R.K.; Sivarani T.
All Open Access; Bronze Open Access; Green Open Access
https://doi.org/10.3847/1538-3881/aae391 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056722412&doi=10.3847%2f1538-3881%2faae391&partnerID=40&md5=b01679579f26285c2b5a9e292c931bdb
Narang M., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Manoj P., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Furlan E., IPAC, Caltech, Mail Code 314-6, 1200 E. California Blvd., Pasadena, 91125, CA, United States; Mordasini C., Physikalisches Institut, Universitat Bern, Gesellschaftstrasse 6, Bern, 3012, Switzerland; Henning T., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India, Max-Planck-Institut f Astronomie, Kigstuhl 17, Heidelberg, D-69117, Germany; Mathew B., Department of Physics, Christ University, Hosur Road, Bangalore, 560029, India; Banyal R.K., Indian Institute of Astrophysics, Bangalore, 560034, India; Sivarani T., Indian Institute of Astrophysics, Bangalore, 560034, India
In search of radio emission from exoplanets: GMRT observations of the binary system HD 41004
(stars:) planetary systems; radio continuum: planetary systems; stars: individual: HD 41004; techniques: interferometric
This paper reports Giant Metrewave Radio Telescope (GMRT) observations of the binary system HD 41004 that are among the deepest images ever obtained at 150 and 400 MHz in the search for radio emission from exoplanets. The HD 41004 binary system consists of a K1 V primary star and an M2 V secondary; both stars are host to a massive planet or brown dwarf. Analogous to planets in our Solar system that emit at radio wavelengths due to their strong magnetic fields, one or both of the planet or brown dwarf in the HD 41004 binary system are also thought to be sources of radio emission. Various models predict HD 41004Bb to have one of the largest expected flux densities at 150 MHz. The observations at 150 MHz cover almost the entire orbital period of HD 41004Bb, and about 20percent of the orbit is covered at 400 MHz. We do not detect radio emission, setting 3? limits of 1.8 mJy at 150 MHz and 0.12 mJy at 400 MHz. We also discuss some of the possible reasons why no radio emission was detected from the HD 41004 binary system. 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Narang M.; Manoj P.; Ishwara Chandra C.H.; Lazio J.; Henning T.; Tamura M.; Mathew B.; Ujwal N.; Mandal P.
Monthly Notices of the Royal Astronomical Society, Vol-500, No. 4, pp. 4818-4826.
https://doi.org/10.1093/mnras/staa3565 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099539606&doi=10.1093%2fmnras%2fstaa3565&partnerID=40&md5=b03fae7c4c6fb994e4a1b494d8cb436f
Narang M., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Manoj P., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Ishwara Chandra C.H., National Centre for Radio Astrophysics, TIFR, Post Bag 3, Ganeshkhind, Pune, 411007, India; Lazio J., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91106, CA, United States; Henning T., Max-Planck-Institut f Astronomie, Kigstuhl 17, Heidelberg, D-69117, Germany; Tamura M., The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan, Astrobiology Center, 2-21-1, Osawa, Mitaka, Tokyo, 181-8588, Japan, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, Karnataka, 560034, India; Ujwal N., Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India; Mandal P., Department of Physics and Electronics, CHRIST (Deemed to Be University), Bangalore, Karnataka, 560034, India
Optical spectroscopy of Gaia detected protostars with DOT: Can we probe protostellar photospheres?
Optical spectroscopy offers the most direct view of the stellar properties and the accretion indicators. Standard accretion tracers, such as H ? , H ? and Ca II triplet lines, and most photospheric features fall in the optical wavelengths. However, these tracers are not readily observable from deeply embedded protostars because of the large line of sight extinction (Av? 50 100 mag) toward them. In some cases, however, it is possible to observe protostars at optical wavelengths if the outflow cavity is aligned along the line-of-sight that allows observations of the photosphere, or the envelope is very tenuous and thin, such that the extinction is low. In such cases, we not only detect these protostars at optical wavelengths, but also follow up spectroscopically. We have used the HOPS catalog (Furlan et al. in 2016) of protostars in Orion to search for optical counterparts for protostars in the Gaia DR3 survey. Out of the 330 protostars in the HOPS sample, an optical counterpart within 2 ? ? is detected for 62 of the protostars. For 17 out of 62 optically detected protostars, we obtained optical spectra (between 5500 and 8900 using nt Object Spectrograph and Camera (ADFOSC) on the 3.6-m Devasthal Optical Telescope (DOT) and Hanle Faint Object Spectrograph Camera (HFOSC) on 2-m Himalayan Chandra Telescope (HCT). We detect strong photospheric features, such as the TiO bands in the spectra (of 4 protostars), hinting that photospheres can form early in the star-formation process. We further determined the spectral types of protostars, which show photospheres similar to a late M-type. Mass accretion rates derived for the protostars are similar to those found for T-Tauri stars, in the range of 10 - 7 10 - 8M? yr - 1 . 2023, Indian Academy of Sciences.
Narang M.; Manoj P.; Tyagi H.; Nayak P.K.; Sharma S.; Surya A.; Banerjee B.; Mathew B.; Ghosh A.; Verma A.
Journal of Astrophysics and Astronomy, Vol-44, No. 2
Narang M., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India, Academia Sinica Institute of Astronomy and Astrophysics, 11F of Astro-Math Bldg., No.1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan; Manoj P., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India; Tyagi H., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India; Nayak P.K., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India, Institute of Astrophysics, Pontificia Universidad Catolica de Chile, Av. Vicu MacKenna 4860, Santiago, 7820436, Chile; Sharma S., Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263 001, India; Surya A., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India; Banerjee B., Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, 400005, India; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore, 560029, India; Ghosh A., Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263 001, India; Verma A., Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263 001, India
A uGMRT search for radio emission from planets around evolved stars
exoplanets; planets and satellites: aurorae; planets and satellites: detection; planets and satellites: gaseous planets; radio continuum: planetary systems; radio continuum: stars
In this work, we present the results from a study using the Giant Meterwave Radio Telescope (GMRT) to search for radio emission from planets around three evolved stars namely ? Tau, ? UMi, and ? Gem. Both ? Tau and ? UMi host massive ? 6 MJ mass planets at about ?1.4 au from the central star, while ? Gem is host to a 2.9 MJ mass planet at 1.7 au from the host star. We observe ? Tau and ? UMi at two upgraded GMRT bands: band 3 (250500 MHz) and band 4 (550900 MHz). We also analysed the archival observations from ? Gem at 150 MHz from GMRT. We did not detect any radio signals from these systems. At 400 MHz, the 3? upper limit is 87 ?Jy beam?1 for ? Tau b and 77.4 ?Jy beam?1 for ? UMi b. From our observations at 650 MHz, we place a 3? upper limit of 28.2 ?Jy beam?1 for ? Tau b and 33.6 ?Jy beam?1 for ? UMi b. For ? Gem b, at 150 MHz, we place an upper limit of 2.5 mJy. At 400 and 650 MHz, our observations are the deepest radio images for any exoplanetary system. The Author(s) 2024.
Narang M.; Puravankara M.; Ishwara Chandra C.H.; Banerjee B.; Tyagi H.; Tamura M.; Henning T.; Mathew B.; Lazio J.; Surya A.; Nayak P.K.
Monthly Notices of the Royal Astronomical Society, Vol-529, No. 2, pp. 1161-1168.
All Open Access; Gold Open Access; Green Open Access
https://doi.org/10.1093/mnras/stae536 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187227976&doi=10.1093%2fmnras%2fstae536&partnerID=40&md5=9120f146a115a4b5729a163186fdcb1b
Narang M., Academia Sinica Institute of Astronomy and Astrophysics, 11F of Astro-Math Bldg, No.1, Section 4, Roosevelt Rd, Taipei, 10617, Taiwan, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Puravankara M., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Ishwara Chandra C.H., National Centre for Radio Astrophysics, TIFR, Post Bag 3, Ganeshkhind, Pune, 411007, India; Banerjee B., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Tyagi H., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Tamura M., University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan, Astrobiology Center, 2-21-1, Osawa, Mitaka, Tokyo, 181-8588, Japan, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan; Henning T., Max-Planck-Institut f Astronomie, Kigstuhl 17, Heidelberg, D-69117, Germany; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560034, India; Lazio J., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91106, CA, United States; Surya A., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India; Nayak P.K., Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India, Institute of Astrophysics, Pontificia Universidad Catica de Chile, Av. Vicu MacKenna 4860, Santiago, 7820436, Chile
Nature inspired algorithm approach for the development of an energy aware model for sensor network
The unique and strong characteristics of Wireless Sensor Network (WSN) have paved a way to many real time applications. Nevertheless, the WSN has their own set of challenges likewise data redundancy, resource constraints, security, packet errors and variable-link capacity etc. Among all, management of energy resource is of high importance as the efficient energy mechanism increases the lifespan of the network. Thereby providing good Quality of Service (QoS) demanded by the application. In WSN even though the energy is required for data acquisition (sensing), processing and communication, more energy are consumed during communication where transmission and retransmission of packets are quite often. In WSN data is transmitted from source to destination where at the destination site the data are analyzed using appropriate data mining techniques to convert data into useful information, and knowledge is extracted from that information to aid the user in efficient decision making. The transmission of data can be either through a single hop or via multiple hops. In single hop, a node is just a router where as in multi hop the node acts as both data originator and router. Thus, consuming more amount of energy and in a multi hop if any of the nodes fails it leads to many large retransmissions thus making a system highly susceptible for energy consumption. Many researchers have dedicated and devoted their time, energy and resources in order to come up with better solutions to answer this problem. This chapter is one such effort to provide a better solution to reduce the energy consumption of sensors. Here, the beauty of DBSCAN clustering technique has been fully exploited in order to develop a spatiotemporal relational model of sensor nodes, followed by the selection of representative subset using measure trend strategy and finally meeting the criteria for identifying the best optimal path for transmission of data using few nature inspired algorithms like Ant Colony Optimization (ACO), Bees Colony Optimization (BCO), and Simulated Annealing (SA). 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
Narasegouda S.; Umme Salma M.; Patil A.N.
Studies in Computational Intelligence, Vol-776, pp. 55-77.
Narasegouda S., Freelance Researcher, Bangalore, India; Umme Salma M., Computer Science Department, Christ (Deemed to be University), Bangalore, India; Patil A.N., Department of Mathematics, Government First Grade College and PG study center, Gadag, India
Fire Resistance of Concrete with Partial Replacement of Ceramic Waste and Carbon Fiber as Additives
Carbon fiber; Ceramic waste; Fire resistance; Superplasticizer
One of the primary hazards that causes catastrophic damage to properties and peoples lives is fire. Although ceramic garbage is deposited on the land, it is a non-biodegradable waste that pollutes the environment. This study is based on the use of industrial waste products such as ceramic sanitary waste to improve the mechanical qualities of concrete that have been exposed to elevated temperatures. An experimental investigation was carried out on cubes, cylinders, and beams to assess compressive strength, split tensile strength, and flexural strength with fractional replacement of fine aggregates with 10, 20, and 30% of ceramic waste and 0, 1, and 2% of carbon fibers as additives at normal and elevated temperature as per ASTM code recommendations and the results shown as a significant improvement. The strength of M30 grade concrete with partial replacement of fine aggregate with ceramic waste up to 30% and carbon additives up to 2% shows an improvement of compressive strength by 17.56% than conventional concrete. It is also observed that normal M30 grade concrete loses its strength by 49.6% when it is exposed to 600C and with fractional replacement of fine aggregate by ceramic waste by up to 30% and carbon additives by up to 2% shows the loss of strength is decreased up to 22.67%. It shows that it is the probable substitute solution for the secure discarding of Ceramic waste. The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
Narasimha Murthy K.N.; Nelda Paul P.; Beevi Mymoon E.M.; Thejas H.K.
Lecture Notes in Civil Engineering, Vol-528 LNCE, pp. 621-631.
Springer Science and Business Media Deutschland GmbH
Narasimha Murthy K.N., Department of Civil Engineering, CHRIST (Deemed to Be University), Bengaluru, India; Nelda Paul P., Department of Civil Engineering, CHRIST (Deemed to Be University), Bengaluru, India; Beevi Mymoon E.M., Department of Civil Engineering, CHRIST (Deemed to Be University), Bengaluru, India; Thejas H.K., Department of Civil Engineering, CHRIST (Deemed to Be University), Bengaluru, India
The Impactful Role of ML Algo in the Field of Enactment Nostrum: An Intensive/Deep Review
Machine Learning; Machine Translation; Natural Language Processing; Support Vector Machines; Translation medicine
Machine translation (MT) research has explored a variety of models, including statistical machine translation (SMT), rule-based machine translation (RBMT), and hybrid approaches. Hybrid MT systems aim to improve translation quality by using the strengths of different models. However, the complex set of functions associated with MT systems is still difficult to understand and optimize. This instant study propose an approach based on ML with respect to hybrid MT that addresses these issues by automatically interpreting and weighting features using ML tools. This research framework includes a classification approach to classify and compare translations from multiple black-box A system that uses ML classifiers trained on feature vectors derived from natural language processing tools. This study presents a method to train and use an SVM-based classifier to generate hybrid interpretations. The test results for English-Chinese pairs show the potential of this research approach to improve translation quality. The proposed framework is a simple and efficient way to combine different MT systems, improving translation results without manual intervention. 2024 IEEE.
Narasimharao J.; Hariharan R.; Sudha E.; Bisht D.; Mohan E.; Almusawi M.; Kumar N.S.
2024 4th International Conference on Advance Computing and Innovative Technologies in Engineering, ICACITE 2024, pp. 1407-1411.
Institute of Electrical and Electronics Engineers Inc.
https://doi.org/10.1109/ICACITE60783.2024.10617176 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201805857&doi=10.1109%2fICACITE60783.2024.10617176&partnerID=40&md5=d38892adf79b65bd7c1cb3a15374b469
Narasimharao J., Cmr Technical Campus, Department of Cse, Telangana, Hyderabad, India; Hariharan R., Christ (Deemed to Be University), School of Business and Management, Yeshwantpur, Bangalore, India; Sudha E., Christ (Deemed to Be University), Department of Commerce, Yeshwantpur Campus, Bangalore, India; Bisht D., Uttaranchal Institute of Management, Uttaranchal University, Department of Management, Dehradun, 248007, India; Mohan E., Simats, Saveetha School of Engineering, Department of Ece, Tamilnadu, Chennai, India; Almusawi M., The Islamic University, Najaf, Iraq; Kumar N.S., Srm Institute of Science & Technology, Department of Computer Science & Engineering, Chennai, Vadapalani, India
The Vital Role of Artificial Intelligence in the Dynamics of Human Resource Management
Artificial intelligence; Decision-making; Higher education institutes; Human resource management; Performance management system; Resource-based view
Human resources play a pivotal role in ensuring the growth of the organizations. Competency mapping, identifying skill gaps, and right talent identification are vital for enhancing the effective functioning of the organizations. As the organizations size increases, these functions become a challenge. In addition to managing the day-to-day operations, organizations are moving toward implementing effective processes for human resource development. Automating and adopting data-driven processes aids in transforming HR into an effective arm of the organization. The advent of artificial intelligence (AI) tools is becoming part of several organizations. These tools relieve HR personnel from spending time on routine tasks and drive them toward strategic decision-making. Organizations are finding AI is crucial in driving innovation in their business models. Thus, transforming processes and creating disruption are warranted to attain a competitive edge. The introduction of AI-driven systems in business organizations leads to significant changes in the demographic gambit of the workforce. It transforms the characteristics and significance of jobs and the relationship between employers and employees. The interaction between people and technology, and the customer experience in a rapidly changing market will be influenced by AI. The practices adopted by organizations in Middle East countries are also discussed. 2026 by Apple Academic Press, Inc.
Narayan, Usha; Sharath Kumar, K.M.; Baba, M. Sai; Saremi, Hamid
AI Dynamics in HRM: Revolutionizing Practices for the Future Workplace;pp.225-255
Restricted Access; Hardcopy may be available in the library
https://doi.org/10.1201/9781779641373-8 https://www.scopus.com/pages/publications/105039614441?origin=resultslist
Narayan U., School of Business and Management, CHRIST University, Karnataka, Bengaluru, India; Sharath Kumar K.M., Department of Management Studies, Faculty of Management and Commerce, Ramaiah University of Applied Sciences, Karnataka, Bengaluru, India; Baba M.S., National Institute of Advanced Studies, Karnataka, Bengaluru, India; Saremi H., Faculty of Financial Management, Business school, Iranian Electronic University, Tehran, Iran
Individual Effect of Spatially Periodic Vertical Surface Temperatures and Nanoparticles on Natural Convection in Water
This paper considers the thermo-convective boundary-layer flow (BLF) of a water-copper mono-nanofluid over a flat vertical surface which is subjected to three types of periodic temperature variations described by the sinusoidal, sawtooth, and triangular waveforms. The temperature of the fluid at the flat surface is greater than the surrounding ambient temperature. The governing equations describing the BLF have been reduced to a non-similar form using an appropriate stream function formulation. The Keller-Box method is used to obtain numerical solution of the boundary-value problem. The effect of the pertinent parameters on the nature of the flow and the heat transfer has been discussed using actual thermophysical data. The results about the shear-stress and heat transfer rate at the surface are presented as well. To study the nature of BLF, the velocity and thermal boundary-layers, the streamline and isotherm plots have been considered, which reveal that the nanoparticle volume-fraction, amplitude of surface temperature variations, and the Grashof number play a pivotal role in enhancing/diminishing heat transfer. The final outcome reveals that the heat transfer is highest for the sinusoidal waveform, followed by that of the triangular and then, the sawtooth. An important inference is that a symmetric periodic temperature distribution at the surface enhances heat transfer more than that of a constant surface-temperature. 2023 by ASME.
Narayana M.; Saha R.; Siddheshwar P.G.; Nagouda S.S.
ASME Journal of Heat and Mass Transfer, Vol-145, No. 7
American Society of Mechanical Engineers (ASME)
https://doi.org/10.1115/1.4056922 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159231301&doi=10.1115%2f1.4056922&partnerID=40&md5=c57aac8fc22d27ad4adbcf47940a2154
Narayana M., Department of Mathematics, The University of the West Indies, Kingston 7, Jamaica; Saha R., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India; Siddheshwar P.G., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India; Nagouda S.S., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India
On the differential transform method of solving boundary eigenvalue problems: An illustration
boundary eigenvalue problem; DarcyBrinkman convection; differential transform method; general boundary conditions; porous medium
The differential transform method (DTM) is a simple technique based on the Taylor series. Applying the DTM, a given linear boundary eigenvalue problem (BEVP) involving ordinary differential equations is converted into a recurrence relation or a system of recurrence relations for the Taylor coefficients. This ultimately leads to the solution of the problem in the form of an infinite power series with an appropriate region of convergence. The present paper aims to apply the DTM in solving a BEVP arising from the DarcyBrinkman convection in a rectangular box subject to general boundary conditions whose vertical sidewalls are assumed to be impermeable and adiabatic. The non-dimensional temperature difference between the plates represented by the DarcyRayleigh number, the eigenvalue of the problem, is obtained as a function of the width of the Bard cell ((Formula presented.) : b is the horizontal wave number) and other parameters using the DTM. The work includes investigation on the convergence of the series solution. The solution by the DTM is compared with that obtained by the MATLAB bvp4c routine and excellent agreement is found thereby establishing the accuracy of theDTM. 2020 Wiley-VCH GmbH
Narayana M.; Shekar M.; Siddheshwar P.G.; Anuraj N.V.
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik, Vol-101, No. 5
https://doi.org/10.1002/zamm.202000114 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097429711&doi=10.1002%2fzamm.202000114&partnerID=40&md5=a62ced86e14b1279f43d6564b1962caa
Narayana M., Department of Mathematics, The University of the West Indies, Mona Campus, Kingston 7, St. Andrew, Jamaica; Shekar M., Department of Mathematics and Statistics, M. S. Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru, 560058, Karnataka, India; Siddheshwar P.G., Department of Mathematics, CHRIST(Deemed to be University), Hosur Road, Bengaluru, 560029, Karnataka, India; Anuraj N.V., Department of Mathematics and Statistics, M. S. Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru, 560058, Karnataka, India
Solution of boundary eigenvalue problems and IBVP involving a system of PDEs using the successive linearization method
The paper illustrates a numerical technique to solve a system of three partial differential equationsthat govern the problem of Rayleigh-Bard-Brinkman convection in a two-dimensional porous rectangular box. As a result of linear and weakly nonlinear stability analyses of the system a boundary eigenvalue problem (BEVP) and an initial boundary value problem (IBVP) arise. Spatial information on the periodicity of the convection cells is first used in the system of PDEs to make it possible for the successive linearization method (SLM) to be applied. The resulting much-simplified versions of BEVP and the IVP are then solved by direct and time multi-stepping versions of SLM, respectively. The SLM solution of the BEVP is compared with that obtained through MATLAB routine bvp4c and the multi-stepping-SLM solution of the IVP is validated with that of the Runge-Kutta-Fehlberg (RKF45) method (using MATLAB routine ode45). The present numerical technique is found to have quadratic convergence for any desiredaccuracy. 2023 Wiley-VCH GmbH.
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik, Vol-103, No. 12
https://doi.org/10.1002/zamm.202200472 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165435748&doi=10.1002%2fzamm.202200472&partnerID=40&md5=0bef6bd24d24846fbb6ef4963e3ec479
Narayana M., Department of Mathematics, The University of the West Indies, Kingston, Jamaica; Siddheshwar P.G., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Karnataka, Bengaluru, India
Energy-efficient and secure routing strategy for opportunistic data transmission in WSNs
attackers; energy consumption; opportunistic; security; WSN
Driven by the critical importance of routing in Wireless Sensor Networks (WSNs) and the security vulnerabilities present in existing protocols, this research aims to address the key challenges in securing WSNs. Many current routing protocols focus on computational efficiency but fall short of providing strong security measures, leaving them vulnerable to malicious attacks. Reactive protocols, often preferred for their reduced bandwidth usage, heighten security concerns due to their limited resources for maintaining network routes, while proactive alternatives require more resources. Additionally, the ad hoc nature and energy limitations of WSNs make traditional security models, designed for wired and wireless networks, impractical. To overcome these limitations, this paper introduces the Secured Energy-Efficient Opportunistic Routing Scheme for sustainable WSNs. The proposed protocol is designed to enhance security by continuously updating neighbor information and verifying the validity of routing parameters, while also being power-aware, a critical factor given the energy constraints of WSNs. The protocol has been evaluated through simulation experiments, measuring key performance indicators such as throughput, average end-to-end delay (E2 delay), energy consumption, and network lifetime. The results demonstrate that the proposed protocol effectively strengthens WSN security while addressing the unique operational constraints of these networks. 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Narayana P.; Keerthi K.; Khalaf O.I.; Chithaluru P.; Patil M.A.; Tumula S.; Jayaram D.; Sharif M.S.
All Open Access; Hybrid Gold Open Access
Narayana P., Department of Computer Science and Engineering, Stanley College of Engineering and Technology for Women, Hyderabad, India; Keerthi K., Department of Computer Science and Engineering, Methodist College of Engineering and Technology, Hyderabad, India; Khalaf O.I., Department of Solar, Al-Nahrain Research Center for Renewable Energy, Al-Nahrain University, Baghdad, Iraq; Chithaluru P., School of Computer Science and Engineering (SCOPE), VIT-AP University, Andhra Pradesh, Amaravati, India; Patil M.A., Department of Computer Science and Engineering, Christ (Deemed to be University, School of Engineering and Technology, Bengaluru, Kengeri, India, Department of Computer Science and Engineering, G. Narayanamma Institute of Technology and Science, Hyderabad, Shaikpet, India; Tumula S., Department of Computer Science and Engineering, G. Narayanamma Institute of Technology and Science, Hyderabad, Shaikpet, India; Jayaram D., Department of Information Technology, Chaitanya Bharathi Institute of Technology (A), Hyderabad, India; Sharif M.S., Intelligent Technologies Research Group, Computer Science and DT, ACE, UEL, University Way, London, United Kingdom
In Time Shelter, Georgi Gospodinov asks whether there is an existence without memory. 2024 Economic and Political Weekly. All rights reserved.
Economic and Political Weekly, Vol-59, No. 37, pp. 71-72.
Narayana S., School of Law, CHRIST (deemed-to-be) University, India
Indias Handling of the Covid-19 Crisis: Could a Rights-Based Approach Overcome Systematic Inadequacies?
Governance; Informal Sector; Lockdown; Migrants; Public Health Care
Covid-19 exposed the fragility and inadequacies in Indias health care system, especially in its public health services. The sudden lockdown imposed during the first wave of the virus severely impacted the livelihoods of millions of migrant workers. Then, in spite of warnings about an impending second wave of infection, the governments failure to prepare the health infrastructure, together with delays in vaccine distribution, cost the lives of hundreds of thousands of people. Unlike the first wave of infection, the second wave impacted rural India very badly. Taking into consideration the existing social hierarchies and inequalities, it was marginalised groups of the population who bore the brunt of the pandemic. This article analyses the failures of the Indian government in handling the Covid-19 crisis, especially during the second wave, and concludes by suggesting ways in which the state needs to intervene to avert disasters of this kind in the future. It argues for the adoption of a rights-based approach to public health on the grounds that successive governments have not been properly held to account for their long-term failures to address the issue. 2022 The Royal Society for Asian Affairs.
Asian Affairs, Vol-53, No. 4, pp. 873-887.
Narayana S., Christ (Deemed to be University), Bangalore, India; Chaly N.S., School of Law, Christ (Deemed to be University), Bangalore, India
High-Performance Ammonia Sensing with Citrus Hystrix-Mediated ZnO Nanoparticles in TFT-Based Devices
Citrus Hystrix; Green process; NH3 sensing; Thin-film transistors; ZnO nanoparticles
We present a sustainable green synthesis approach for zinc oxide nanoparticles (ZnO NPs) utilizing Citrus hystrix leaf extract and their application as an active medium in a thin film transistor (TFT)-based ammonia gas sensor. For the first time, ZnO NPs derived from Citrus hystrix serve as a receptor layer in a thin film transistor (TFT) device, enabling selective ammonia detection at a significantly reduced initiation temperature. The synthesized ZnO NPs, with a wurtzite structure and an average crystallite size of approximately 14 nm, are deposited onto the TFT sensor without the need for an external conducting layer. The sensor demonstrates excellent sensitivity and selectivity, achieving a maximum response of ~85 % at 20 ppm, with a rapid response time of about 10 seconds at room temperature. Notably, the TFT device exhibits an electron mobility of ~10.2 cm2/V ? s and a high on/off ratio (>10?) at room temperature. The sensing mechanism is attributed to the oxidation-reduction interactions between surface-adsorbed oxygen and NH? molecules on the ZnO NPs, which modulate the device's electrical conductivity. This work underscores the importance of eco-friendly fabrication of high-performance, durable devices, addressing contemporary environmental and economic concerns. 2025 Wiley-VCH GmbH.
Narayana, Ashwath; Mahendra Prashanth, K.; Veerabhadraswamy, B.N.; Mareddi, Bharathkumar; Khatavi, Santosh Y; Prasad, B.L.V.; Yelamaggad, C.V.
ChemNanoMat;Volume;11;Issue;3;Article No.;e202400491;
https://doi.org/10.1002/cnma.202400491 https://www.scopus.com/pages/publications/105001090982?origin=resultslist
Narayana A., Department of Electronics & Communication Engineering, Don Bosco Institute of Technology, Kengeri, Bengaluru, 560074, India; Mahendra Prashanth K., V, SJB Institute of Technology, Health & Education City, Karnataka, Kengeri, Bengaluru, 560060, India; Veerabhadraswamy B.N., Department of Chemistry, G M Institute of Technology, P B Road, Karnataka, Davanagere, India; Mareddi B., Department of Electronics & Communication Engineering, Christ University, Kengeri, Bengaluru, India; Khatavi S.Y., Centre for Nano and Soft Matter Sciences, Arkavathi, Survey No. 7, Shivanapura, Dasanapura Hobli, Bengaluru, India; Prasad B.L.V., Centre for Nano and Soft Matter Sciences, Arkavathi, Survey No. 7, Shivanapura, Dasanapura Hobli, Bengaluru, India; Yelamaggad C.V., Department of Chemistry, G M Institute of Technology, P B Road, Karnataka, Davanagere, India, Department of Electronics & Communication Engineering, Christ University, Kengeri, Bengaluru, India, Centre for Nano and Soft Matter Sciences, Arkavathi, Survey No. 7, Shivanapura, Dasanapura Hobli, Bengaluru, India, Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
Narayana, Potu; Keerthi, K.; Khalaf, Osamah Ibrahim; Chithaluru, Premkumar; Patil, Manoj A.; Tumula, Sridevi; Jayaram, Dharmana; Sharif, Mhd Saeed
Journal of Cyber Security Technology;Volume;10;Issue;1;pp.1-36
https://doi.org/10.1080/23742917.2024.2431355 https://www.scopus.com/pages/publications/85210908911?origin=resultslist
Narayana P., Department of Computer Science and Engineering, Stanley College of Engineering and Technology for Women, Hyderabad, India; Keerthi K., Department of Computer Science and Engineering, Methodist College of Engineering and Technology, Hyderabad, India; Khalaf O.I., Department of Solar, Al-Nahrain Research Center for Renewable Energy, Al-Nahrain University, Baghdad, Iraq; Chithaluru P., Department of Information Technology, Mahatma Gandhi Institute of Technology, Telangana, India; Patil M.A., Department of Computer Science and Engineering, Christ (Deemed to be University, School of Engineering and Technology, Bengaluru, Kengeri, India, Department of Computer Science and Engineering, G. Narayanamma Institute of Technology and Science, Hyderabad, Shaikpet, India; Tumula S., Department of Computer Science and Engineering, Chaitanya Bharathi Institute of Technology (A), Hyderabad, India; Jayaram D., Department of Information Technology, Chaitanya Bharathi Institute of Technology (A), Hyderabad, India; Sharif M.S., Intelligent Technologies Research Group, Computer Science and DT, ACE, UEL, University Way, London, United Kingdom
Suppression and redfinition of self in the selct novels of Toni Morrison and ALice Walker
Literature is a mirror held onto the society that reflects the culture, history and socio-political issues of specific periods. Books have the uniqueness of transforming lives by weaving characters, to whom we are able to relate their trials, tribulations and achievements become our own. Although confined to the Afro-American milieu, Alice Walker s The Color Purple and Toni Morrison s The Bluest Eye, Sula and Beloved raises issues and concerns that are universal to women across the globe. These writers try to lend voice to an otherwise marginalized and newlinesuppressed group of women, who have been denied a dignified existence. This research, through the methodology of critical analysis and interpretation of texts, tries to understand the concept of self, from the western and eastern perspectives. In the due process, the various factors that contribute to the formation of an individual s self are also identified. Through an analysis of the newlinefemale protagonists in the works of Morrison and Walker, this study examines how it is possible for a woman to progress from the margins to a position that is central, from object to subject. newlineMost often, women are not even conscious that they too have an individuality of their own and need to lead a dignified life. Having got so habituated to oppression, it has almost become a way of life for them. They need to be conscious and aware of the fact that they have to create a space of their own, without compromising on their individuality and dignity. When they fail to do this,they just stagnate and become mere pawns in the hands of men and tend to get exploited. Most of newlinethe female protagonists discussed in this study, go through this phase and are unable to extricat themselves from the traumatized conditions that engulf them. newlineThis study clearly focuses on how women need to be conscious of what is happening to them and realize that they are being deprived of their individuality and dignity.
A novel assessment of bio-medical waste disposal methods using integrating weighting approach and hesitant fuzzy MOOSRA
Bio-medical waste; Criteria importance through inter criteria correlation; Multi-criteria decision making; Multi-objective optimization on the basis of simple ratio analysis; Subjective and objective weight integrated approach; Waste management
Bio-medical waste (BMW) management is highly important precaution for human health and environmental concern. There are several disposal treatment followed by medical practitioners in medical waste management. Here, a few disposal treatment is considered to be an alternatives. When assessing, it is necessary to evaluate and assume that all disposal treatment methods are safe and hygienic. In this way, every alternative assessment is evaluated based on the social acceptance, technology and operation, environmental protection, cost, noise and health risk. Finally the best alternative is chosen. When BMW is disposed and we select the best treatment method in BMW management, it can lead to multi-criteria decision making (MCDM) processes related to uncertain critical assessments. When making a decision, the decision makers having some hesitation to give their suggestions. Therefore, here we use hesitant MCDM method. In today's practice we have choose five methods of BMW disposal methods used in the medical world and we have its alternatives. One of these alternative is sorted by six criteria weights for selecting the best method. The main aim of this research paper is propose a new methodology of hesitant fuzzy weight finding technique, it is named as Hesitant Fuzzy Subjective and Objective Weight Integrated Approach (HF-SOWIA) and also propose a new hesitant fuzzy rank finding methodology, it is named as Hesitant Fuzzy Multi-Objective Optimization on the basis of Simple Ratio Analysis (HF-MOOSRA). After evaluation, the result shows that autoclaving is the best alternative for BMW disposal treatment methods. Furthermore, sensitivity analysis is make in order to observe the difference of alternative ranking when the importance of subjective and objective weights changes. 2020 Elsevier Ltd
Narayanamoorthy S.; Annapoorani V.; Kang D.; Baleanu D.; Jeon J.; Kureethara J.V.; Ramya L.
https://doi.org/10.1016/j.jclepro.2020.122587 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088360925&doi=10.1016%2fj.jclepro.2020.122587&partnerID=40&md5=7a8177dff1cb739fd7cbec29b67bd612
Narayanamoorthy S., Department of Mathematics, Bharathiar University, Coimbatore, 641 046, India; Annapoorani V., Department of Mathematics, Bharathiar University, Coimbatore, 641 046, India; Kang D., Department of Industrial and Management Engineering, Inje University 197 Inje-ro, Gimhae-si, 50834, Gyeongsangnam-do, South Korea; Baleanu D., Department of Mathematics, Cankaya University, Balgat, Ankara, Turkey, Turkey and Institute of Space Sciences, Magurele, Bucharest, Romania; Jeon J., Department of Industrial & Systems Engineering, Gyeongsang National University, Jinju- Si, Gyeongsangnam-do, South Korea; Kureethara J.V., CHRIST (Deemed to Be University), Bangalore, India; Ramya L., Department of Mathematics, Bharathiar University, Coimbatore, 641 046, India
A distinctive symmetric analyzation of improving air quality using multi-criteria decision making method under uncertainty conditions
Air pollution; Air quality improvement; Decision making; Fuzzy MULTIMOORA; MCDM; Symmetric
This world has a wide range of technologies and possibilities that are available to control air pollution. Still, finding the best solution to control the contamination of the air without having any impact on humans is a complicated task. This proposal helps to improve the air quality using the multi-criteria decision making method. The decision to improve air quality is a challenging problem with todays technology and environmental development level. The multi-criteria decision making method is quite often faced with conditions of uncertainty, which can be tackled by employing fuzzy set theory. In this paper, based on an objective weighting method (CCSD), we explore the improved fuzzy MULTIMOORA approach. We use the classical Interval-Valued Triangular Fuzzy Numbers (IVTFNs), viz. the symmetric lower and upper triangular numbers, as the basis. The triangular fuzzy number is identified by the triplets; the lowest, the most promising, and the highest possible values, symmetric with respect to the most promising value. When the lower and upper membership functions are equated to one, we get the normalized interval-valued triangular fuzzy numbers, which consist of symmetric intervals. We evaluate five alternatives among the four criteria using an improved MULTIMOORA method and select the best method for improving air quality in Tamil Nadu, India. Finally, a numerical example is illustrated to show the efficiency of the proposed method. 2020, MDPI AG. All rights reserved.
Narayanamoorthy S.; Anuja A.; Kang D.; Kureethara J.V.; Kalaiselvan S.; Manirathinam T.
https://doi.org/10.3390/sym12111858 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096230961&doi=10.3390%2fsym12111858&partnerID=40&md5=5f35ad6830e694cd57ecb9f201af5004
Narayanamoorthy S., Department of Mathematics, Bharathiar University, Coimbatore, 641046, India; Anuja A., Department of Mathematics, Bharathiar University, Coimbatore, 641046, India; Kang D., Department of Industrial and Management Engineering, Inje University, 197 Inje-ro, Gimhae-si, 50834, Gyeongsangnam-do, South Korea; Kureethara J.V., Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India; Kalaiselvan S., Department of Social Work, SRMV College of Arts and Science, Coimbatore, 641020, Tamil Nadu, India; Manirathinam T., Department of Mathematics, Bharathiar University, Coimbatore, 641046, India