Nanoencapsulation of Ru(p-cymene) Complex Bearing Ginger-based Natural Product into Liposomal Nanoformulation to Improve Its Cellular Uptake and Antiproliferative Activity
6-gingerol; intracellular uptake; nanoencapsulation; polydiacetylene-phospholipid assembly; ROS-generation; Ru(p-cymene) complexes
The organometallic compounds are prospective candidates in the row of developing metallochemotherapeutics with the aim of overcoming the limitations of platinum drugs. In order to explore the anticancer properties of organometallic compounds with the natural medicines, two Ru(II)-p-cymene complexes containing the natural products, viz., 6-gingerol (6G) and benzylated-6-gingerdione (B-6GD) have been synthesized and characterized well. The phenolic group of the Ru(6G) complex facilitates its higher cell-free antioxidant activity than its analogue complex. Also, the same complex shows higher cytotoxicity toward A549 lung and HeLa-S3 cervical cancer cells than the Ru(B-6GD) complex but lower cytotoxicity toward A2058 metastatic melanoma cancer cells. Both complexes are shown to easily accumulate in melanoma cancer cells, and their degree of cytotoxicity in the same cells is found to be positively correlated with cell uptake. The cytotoxicity of complexes arises from their intracellular activity, mainly due to the induction of singlet oxygen production in cancer cells. The subcellular fractionation study shows that mitochondria and ER-Golgi membranes might be their predominant targets. Also, the mechanistic investigation revealed that Ru(B-6GD) induces caspase-dependent non-apoptotic cell death whereas Ru(6G) can induce caspase-independent non-apoptotic cell death. Furthermore, both complexes are found to moderately alter the adhesion properties of cancer cells, which is beneficial for antimetastatic treatment. Despite the potential pharmacological activity, Ru(6G) is encapsulated into polymer-supported liposomes to reduce its toxicity and further improve its anticancer potency. The ?-conjugated yne-ene chain of polydiacetylene aids in the development of a stable nanoformulation, which achieved a slow release of the complex. Most importantly, the cancer cell uptake of the liposome-encapsulated Ru(6G) complex is 20 times enhanced and the total ROS formation in cancer cells is significantly increased compared to the non-encapsulated complex. However, the nanoformulation does not alter the antimetastatic potency of the encapsulated complex. 2022 American Chemical Society. All rights reserved.
Sumithaa C.; Manjunathan T.; Mazuryk O.; Peters S.; Pillai R.S.; Brindell M.; Gopinath P.; Ganeshpandian M.
ACS Applied Bio Materials, Vol-5, No. 7, pp. 3241-3256.
https://doi.org/10.1021/acsabm.2c00231 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134632163&doi=10.1021%2facsabm.2c00231&partnerID=40&md5=57eb42a7e36aedc684ceeb696340c885
Sumithaa C., Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603 203, India; Manjunathan T., Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603 203, India; Mazuryk O., Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University in Krak, Krakow, 30-387, Poland; Peters S., Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603 203, India; Pillai R.S., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India; Brindell M., Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University in Krak, Krakow, 30-387, Poland; Gopinath P., Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603 203, India; Ganeshpandian M., Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603 203, India
Corrosion Characterization of Friction Stir Weld Dissimilar Aluminium Alloy Joints
Aluminium Alloys; Characterization; Corrosion; Dissimilar; Friction Stir Welding; Potentiodynamic
The course of contact mix welding is quick acquiring conspicuousness in aviation, marine and car industry because of its benefits as far as mechanical strength, effect and hardness characteristics. There is as yet a requirement for sure fire consideration from the exploration local area to erosion in grating mix welding zones, hence the work introduced here centres around the consumption portrayal of the grinding mix weld divergent aluminium composite. This study looks into friction stir welding under various parametric settings and shows how corrosion happens in a sodium chloride electrolytic media under potentio-dynamic conditions. The friction stir weld joints of dissimilar alloys aluminium are constructed using three sets of parameters. Straight cylinder, taper cylinder, and straight triangular tool profiles; tool rotational speeds of 800, 1000, and 1200 rpm; tool feed rates of 100, 120, and 140 mm/min; and tool offsets of 0.5, 0 mm, and-1.5 mm. The corrosion current (Icorr) reduces as tool rotating speed increases up to 1200 rpm, after which it slightly increases due to the creation of ridges all around the periphery of the friction stir weld area. 2022, Books and Journals Private Ltd.. All rights reserved.
Journal of Mines, Metals and Fuels, Vol-70, No. 8, pp. 16-22.
All Open Access; Hybrid Gold Open Access
https://doi.org/10.18311/jmmf/2022/32003 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167331395&doi=10.18311%2fjmmf%2f2022%2f32003&partnerID=40&md5=3091e871125e95ee1e755584f852b98e
Ramesha K., Department of Mechanical and Automobile Engineering, CHRIST (Deemed to be University), Karnataka, Bengaluru, India; Santhosh N., Dept.of Mech.Engg, MVJ College of Engg, Karnataka, Bengaluru, India; Naresh H., Dept.of Mech.Engg, Siddaganga Institute of Technology, Karnataka, Tumakuru, India
Modelling, Temperature Analysis, and Mechanical Properties of Friction Stir Welding of Al-Cu Joints with Hardened OHNS Steel Tools
Friction Stir Welding; Hardened OHNS steel tool; Solid Modelling; temperature distribution; welding tool pin form
Friction stir welding (FSW) is a nearly modern welding method with vital advantages over the conventional welding process, such as lower distortion, enhanced mechanical properties, and eco-friendly. In FSW, the joint characteristics mainly depend on heat development during the joining process due to its solid-state joining method. The basic principles of thermomechanical methods during FSW are unknown since it is a new metal joining method. In this investigation, the 2D and 3D models of the tools with different pin forms were designed using SOLIDWORKS. The ANSYS software was used to investigate the temperature distributions near the weld zones. The fixture was designed and made according to the machine conditions. The base plates used were AA6101 and C11000; the tool material used was the Hardened OHNS steel tool with square and circular pin form. The temperature values were measured in each trial while joining of Al-Cu base plates along the weld line. The results reveal that in the joint area, a trial with high temperature leads to high ultimate tensile strength (UTS) and Charpy impact strength (CIS). Made at tool rotation speed 1200 rpm and feed velocity 20 mm/min of Hardened OHNS steel tool with circular pin form. The obtained UTS value at joints was less than that of Al and Cu base plates. The microhardness value detected at the joint area was higher than the Al and Cu base plates, providing high strength, and irregularly dispersed. 2022, Books and Journals Private Ltd.. All rights reserved.
Raj A.; Pratap Kumar J.; Ramesha K.; Rout I.S.
Journal of Mines, Metals and Fuels, Vol-70, No. 8, pp. 462-470.
https://doi.org/10.18311/jmmf/2022/32027 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167359202&doi=10.18311%2fjmmf%2f2022%2f32027&partnerID=40&md5=888612dcdd2e924001d1b2b90a6fc7f4
Raj A., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Pratap Kumar J., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Ramesha K., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India; Rout I.S., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560074, India
Semilinear fractional elliptic equations with combined nonlinearities and measure data
Fractional Laplacian; Radon measure; Sub and supersolutions; Variational methods
This study focuses on semilinear fractional elliptic problems with concave-convex type nonlinearities and measures as data. Suitable iteration techniques and embedding results are employed to ensure the existence and multiplicity of solutions. 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
Journal of Pseudo-Differential Operators and Applications, Vol-13, No. 3
Badajena A.K., Department of Mathematics, NIT Rourkela, Odisha, Rourkela, 769008, India; Soni A., Department of Computational Sciences, Christ University, Delhi NCR, Ghaziabad, 201003, India; Pradhan S., Department of Mathematics, NIT Rourkela, Odisha, Rourkela, 769008, India
A Cross-Sectional Study on Mental Health of School Students during the COVID-19 Pandemic in India
COVID-19; level based weight assessment (LBWA); mental health; picture fuzzy force field analysis (PF-FFA); school students; social support
The broad objective of the present study is to assess the levels of anxiety and depression of school students during the COVID-19 lockdown phase and their association with students background, stress, concerns and social support. In this regard, the present study follows a novel two stage approach. In the first phase, an empirical survey was carried out, based on multivariate statistical analysis, wherein a group of 273 school students participated in the study voluntarily. In the second phase, a novel Picture Fuzzy FFA (PF-FFA) method was applied for understanding the dynamics of facilitating and prohibiting factors for three categories of focus groups (FG), formulated on the basis of attendance in online classes. Findings revealed a significant impact of anxiety and depression on mental health. Further, PF-FFA examinedthe impact of the driving forces that steered children to attend class as contrasted to the the impact of the restricting forces. 2022 by the authors.
Deb S.; Kar S.; Deb S.; Biswas S.; Dar A.A.; Mukherjee T.
https://doi.org/10.3390/data7070099 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135704344&doi=10.3390%2fdata7070099&partnerID=40&md5=c9aca4154ae699eaccc15932e62bbca3
Deb S., Rajiv Gandhi National Institute of Youth Development, Post Box No. 6, Sriperumbudur Post, Sriperumbudur, 602105, India; Kar S., National Institute of Technology Durgapur, Mahatma Gandhi Rd, A-Zone, Durgapur, 713209, India; Deb S., Department of Psychology, CHRIST (Deemed to Be University, Hosur Rd, Bhavani Nagar, S.G. Palya, Bengaluru, 560029, India; Biswas S., Calcutta Business School, Bishnupur, 743503, India; Dar A.A., Department of Psychology, School of Liberal Arts Social Sciences, SRM University Neeru Konda, Amaravati, 522502, India; Mukherjee T., Department of Psychology, Justus-Liebig University Giessen, Ludwigstra 23, Gien, 35390, Germany
Trigonometric Cosine, Square, Sawtooth and Triangular Waveforms of Internal Heating Modulations for Three-Component Convection in a Couple Stress Liquid: A Detailed Analysis
Heat transfer; Internal heat; Lorenz model; Mass transfer; Three-component convection; Venezian approach
In this paper, the main focus is to study the effect of internal heating modulations of sinusoidal and non-sinusoidal waveforms on a three-component convection in a couple stress liquid. This three-component layer is heated from below and salted with two solutes at the bottom. In order to facilitate a solution to the problem, linear case is formulated using the Venezian approach for modulations while the non-linear case is modeled using 7-mode generalized Lorenz equations. With the aim of quantifying the heat and mass transfer, average Nusselt and average Sherwood numbers are computed. The investigation reveals that, internal heating modulations show a stabilizing or destabilizing trend that precisely depends on the modulated frequency and appropriate waveforms. The effect of heat source and sink is recorded on different convection processes. The effect of the pertinent parameters and waveforms on the stability of the system and on heat and mass transfer have been captured via graphs. The results confirm that the heat and mass transfer escalates to its maximum due to the square waveform. In this research paper, six problems involving three types of convection in two different liquids are solved as limiting cases of the problem. 2022, The Author(s), under exclusive licence to Springer Nature India Private Limited.
International Journal of Applied and Computational Mathematics, Vol-8, No. 4
Arshika S.N., Department of Mathematics, Centre for Mathematical Needs, CHRIST (Deemed to Be University), Bengaluru, 560029, India; Tarannum S., Department of Professional Studies, CHRIST (Deemed to Be University), Bengaluru, 560029, India
Breast Cancer Detection in Mammography Images Using Deep Convolutional Neural Networks and Fuzzy Ensemble Modeling Techniques
breast cancer; deep CNN; DenseNet121; ensemble; fuzzy; Gompertzfunction; Inception V4; ResNet-164; VGG-11
Breast cancer has evolved as the most lethal illness impacting women all over the globe. Breast cancer may be detected early, which reduces mortality and increases the chances of a full recovery. Researchers all around the world are working on breast cancer screening tools based on medical imaging. Deep learning approaches have piqued the attention of many in the medical imaging field due to their rapid growth. In this research, mammography pictures were utilized to detect breast cancer. We have used four mammography imaging datasets with a similar number of 1145 normal, benign, and malignant pictures using various deep CNN (Inception V4, ResNet-164, VGG-11, and DenseNet121) models as base classifiers. The proposed technique employs an ensemble approach in which the Gompertz function is used to build fuzzy rankings of the base classification techniques, and the decision scores of the base models are adaptively combined to construct final predictions. The proposed fuzzy ensemble techniques outperform each individual transfer learning methodology as well as multiple advanced ensemble strategies (Weighted Average, Sugeno Integral) with reference to prediction and accuracy. The suggested Inception V4 ensemble model with fuzzy rank based Gompertz function has a 99.32% accuracy rate. We believe that the suggested approach will be of tremendous value to healthcare practitioners in identifying breast cancer patients early on, perhaps leading to an immediate diagnosis. 2022 by the authors.
Altameem A.; Mahanty C.; Poonia R.C.; Saudagar A.K.J.; Kumar R.
Multidisciplinary Digital Publishing Institute (MDPI)
All Open Access; Gold Open Access; Green Open Access
https://doi.org/10.3390/diagnostics12081812 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137404869&doi=10.3390%2fdiagnostics12081812&partnerID=40&md5=eccc4042fccd07e514cff67c3508b976
Altameem A., Department of Computer Science and Engineering, College of Applied Studies and Community Services, King Saud University, Riyadh, 11533, Saudi Arabia; Mahanty C., Department of Computer Science and Engineering, GIET University, Odisha 765022, India; Poonia R.C., Department of Computer Science, CHRIST (Deemed to be University), Bangalore, 560029, India; Saudagar A.K.J., Information Systems Department, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11432, Saudi Arabia; Kumar R., Department of Computer Science and Engineering, GIET University, Odisha 765022, India
Proficient randomized response model based on blank card strategy to estimate the sensitive parameter under negative binomial distribution
Negative binomial distribution; Privacy protection; Randomized response model; Sensitive attribute
This paper has great potential for estimating population proportion who possess stigmatized character by using Negative binomial distribution as a randomization device. The properties of the proposed estimation procedure have been examined. Measure of privacy protection for the proposed randomization device has been also quantified. Empirical studies are performed to support the theoretical results, which show the dominance of the proposed estimator over its competitors. Results are analysed and suitable recommendations are put forward for survey practitioners whenever they deal with sensitive characteristics. 2021
Ain Shams Engineering Journal, Vol-13, No. 5
https://doi.org/10.1016/j.asej.2021.10.006 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126059731&doi=10.1016%2fj.asej.2021.10.006&partnerID=40&md5=553c14311b1d1409011c5af584b9ccb1
Singh G., Department of Management Studies, IIT(ISM), Dhanbad, India; Singh C., Department of Statistics, CHRIST(Deemed to be University), Karnataka, Bengaluru, India
Numerical Modelling and Experimental Validation of Novel Para Winglet Tape for Heat Transfer Enhancement
experimental; heat exchangers; numerical; performance evaluation
Heat exchangers are predominantly used in the industries of production, manufacturing, power, oil and gas, petroleum, and cooling solutions. The competence of the heat exchanger is optimized through active and passive augmented techniques. The current study revolves around the performance evaluation of Novel Para winglet tape for flow and friction characteristics. Turbulence flow properties from Re of 30,000-to-6000 were explored for three different inclinations and pitches, respectively. Experimental and numerical solutions are derived to showcase the flow behavior over Para winglet tape inserts in the double pipe heat exchanger. Appreciable results were obtained in enhancing the Nusselt number (Nup) for a better heat transfer enforcement through the DEX. All case studies also increased when compared to the smooth pipe. Experimentally, the maximum Nu and Nusselt number ratio was observed to be 398.23 and 5.05 times over the plain tube. Similarly, the maximum friction factor and its ratio were observed to be near 0.33 and 8.89 times over the plain tube. Finally, the maximum POI of 2.68 to 2.37 was achieved with 20 inclinations. The experimental and numerical outcomes of Para winglet tape with the higher inclination and shorter pitch were found to be best out of the others. 2022 by the authors.
Rajashekaraiah T.; Bettaiah G.K.; Rajendran P.; Abbas M.; Khan S.A.; Saleel C.A.
https://doi.org/10.3390/math10162893 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137392795&doi=10.3390%2fmath10162893&partnerID=40&md5=9a8ec1d78ab5f0a546709e6841646acb
Rajashekaraiah T., Department of Mechanical Engineering, Visvesvaraya Technological University, Karnataka, Belgaum, 590018, India, Department of Mechanical Engineering, School of Engineering and Technology, CHRIST (Deemed to Be University), Karnataka, Bengaluru, 560076, India; Bettaiah G.K., Department of Mechanical Engineering, BGSIT-Adichunchanagiri University BG Nagara, Javarana Hally, Karnataka, 571448, India; Rajendran P., School of Aerospace Engineering, Universiti Sains Malaysia, Engineering Campus, Pulau Pinang, Nibong Tebal, 14300, Malaysia, Faculty of Engineering Computing, First City University College, Selangor, Bandar Utama, Petaling Jaya, 47800, Malaysia; Abbas M., Electrical Engineering Department, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia, Electronics and Communications Department, College of Engineering, Delta University for Science and Technology, Gamasa, 35712, Egypt, Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Khan S.A., Department of Mechanical Engineering, Faculty of Engineering, International Islamic University, Lumpur, Kuala, 44000, Malaysia; Saleel C.A., Department of Mechanical Engineering, College of Engineering, King Khalid University, P.O. Box 394, Abha, 61421, Saudi Arabia
Design Optimization of Electrical Connector Assembly using FEA
ANSYS Mechanical APDL; Electrical Connector; housing latch
Due to the increasing number of devices and systems connected to an electric system, the need for reliable and high-quality electrical connectors has become more prevalent. This project aims to optimize the design of an electrical connector during its two most critical stages: insertion and retention of housing using FEA. A structural analysis is performed during the insertion and retention stages of housing. This process involves calculating the dimensional deformations and maximum strains developed during the steps mentioned above to determine the reliable functioning of electrical contacts. The input geometry is fed to the finite element analysis. The forces applied on the connectors latch on their respective connection are ensured to be under the limit. The analysis and simulation results are reflected to validate the safe forces in the connector assembly and a proper justification for an experimental set up in the laboratory. 2022, Books and Journals Private Ltd.. All rights reserved.
Rohith R.; Shivakumar S.; Niranjana S.J.; Umesh V.; Darshan S.M.; Sasidhar J.
Journal of Mines, Metals and Fuels, Vol-70, No. 8, pp. 233-237.
https://doi.org/10.18311/jmmf/2022/31981 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167343788&doi=10.18311%2fjmmf%2f2022%2f31981&partnerID=40&md5=9121be9fc67f8baec521aeb42f62c712
Rohith R., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India; Shivakumar S., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India; Niranjana S.J., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India; Umesh V., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India; Darshan S.M., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India; Sasidhar J., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, 560074, India
Enhanced radial basis function neural network for tomato plant disease leaf image segmentation
Enhanced radial basis function; Feature extraction; Modified sunflower optimization; Segmentation; Tomato leaf disease
Primary crop losses in agriculture are due to leaf diseases, which farmers cannot identify early. If the diseases are not detected early and correctly, then the farmer will have to undergo huge losses. Therefore, in the field of agriculture, the detection of leaf diseases in tomato crops plays a vital role. Recent advances in computer vision and deep learning techniques have made disease prediction easy in agriculture. Tomato crop front side leaf images are considered for research due to their high exposure to diseases. The image segmentation process assumes a significant role in identifying disease affected areas on tomato leaf images. Therefore, this paper develops an efficient tomato crop leaf disease segmentation model using an enhanced radial basis function neural network (ERBFNN). The proposed ERBFNN is enhanced using the modified sunflower optimization (MSFO) algorithm. Initially, the noise present in the images is removed by a Gaussian filter followed by CLAHE (contrast-limited adaptive histogram equalization) based on contrast enhancement and un-sharp masking. Then, color features are extracted from each leaf image and given to the segmentation stage to segment the disease portion of the input image. The performance of the proposed ERBFNN approach is estimated using different metrics such as accuracy, Jaccard coefficient (JC), Dice's coefficient (DC), precision, recall, F-Measure, sensitivity, specificity, and mean intersection over union (MIoU) and are compared with existing state-of-the-art methods of radial basis function (RBF), fuzzy c-means (FCM), and region growing (RG). The experimental results show that the proposed ERBFNN segmentation model outperformed with an accuracy of 98.92% compared to existing state-of-the-art methods like RBFNN, FCM, and RG, as well as previous research work. 2022 Elsevier B.V.
https://doi.org/10.1016/j.ecoinf.2022.101752 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135888868&doi=10.1016%2fj.ecoinf.2022.101752&partnerID=40&md5=fae568c73ea3f425f0a62d0a0e3c1e1b
Patil M.A., Research Scholar, Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bangalore, 560074, India, Assistant Professor, Department of Information Technology, Vasavi College of Engineering, Ibrahimbagh, Telangana, Hyderabad, 500031, India; M M., Associate Professor, Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Karnataka, Bangalore, 560074, India
Influence of perceived equity, job enrichment, and burnout among educators in Indian private universities on job satisfaction and the desire to quit
burnout; desire to quit job; higher education; job enrichment; job satisfaction; perceived equity; university faculty members
The desire to quit converts into actual attrition if left unaddressed. Additionally, employees job satisfaction strongly influences their desire to stay or leave. Several individual and organizational factors affect job satisfaction levels, all of which must be thoroughly analyzed to curb both the desire to quit and attrition. The current study tests a model associating perceived equity, job enrichment, and burnout with job satisfaction and the desire to quit of educators employed in private universities in India. Data were collected from 272 university faculty members using five scales, namely, job enrichment, perceived equity, employee burnout, job satisfaction, and intention to leave, and were analyzed using AMOS 17. The initial fitness results failed to support the hypothesized framework, but a revised framework yielded a good fit for the data. Results show that perceived equity has a positive influence on job satisfaction (Hypothesis 2), job enrichment positively affects job satisfaction (Hypothesis 3), burnout negatively influences job satisfaction (Hypothesis 4), and job satisfaction negatively affects the desire to leave (Hypothesis 1). Perceived equity, burnout, and job satisfaction were found to mediate the association between job enrichment and the desire to leave. The results indicate that private universities must focus on job satisfaction to reduce employees desire to quit, thereby reducing the attrition level, which is currently a severe problem with both financial and non-financial consequences to universities. From the results, it can be seen that job enrichment has acted as a mediator to influence employees job satisfaction. Future research can explore HR practices contributing to high job enrichment, and this study would have considerable practical implications. Copyright 2022 Annamalai.
https://doi.org/10.3389/feduc.2022.991068 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140081641&doi=10.3389%2ffeduc.2022.991068&partnerID=40&md5=8e0f17ae157555f5fa75f045912a3631
Annamalai S., School of Business and Management, CHRIST (Deemed to be University), Bengaluru, India
Low temperature performance evaluation of asphalt binders and mastics based on relaxation characteristics
Asphalt mastics; Correlation analysis; Low-temperature performance; Relaxation characteristics
Low temperature cracking is one of the main distresses of asphalt pavement in cold regions. Stress relaxation characteristics is critical for cracking resistance of asphalt materials, especially at low temperatures, but there are few studies on the relaxation characteristic of asphalt mastics. To evaluate the effects of relaxation characteristics of asphalt binders and mastics on its low temperature performance, beam bending relaxation test was carried out through dynamic thermomechanical analyzer at low temperatures. Relaxation rate and relaxation time were proposed to illustrate the relaxation characteristics of asphalt binders and mastics. Then, the low-temperature performance of asphalt binders and mastics was evaluated by bending beam rheometer (BBR), glass transition temperature (Tg), and single edge notch beam bending test. Finally, the correlation of relaxation characteristics with low-temperature properties was analyzed based on Pearsons correlation coefficient and Spearman rank correlation coefficient. The results show that the elasticity of asphalt mastics increases with incorporation of mineral fillers and thus the viscous deformation potential is reduced, which affects the stress relaxation capability. The low-temperature cracking performance of asphalt mastics is indeed compromised as compared with asphalt binders, and the asphalt mastics prepared with fly ash performs the worst since it presents a stronger hardening effect. Fracture energy is determined not to be suitable for evaluating the low-temperature performance of asphalt mastics since its results contradict the BBR and Tg tests. The maximum displacement at fracture can better characterize the brittleness of asphalt materials at low temperatures. The relaxation characteristic index has the strongest correlation with Tg of asphalt binders and mastics, followed by maximum displacement at fracture and comprehensive compliance parameter (Jc). The correlation coefficients are almost larger than 0.5, suggesting that relaxation time and relaxation rate can characterize the low-temperature properties of asphalt binders and mastics. 2022, RILEM.
Zheng W.; Yang Y.; Chen Y.; Yu Y.; Hossiney N.; Tebaldi G.
Materials and Structures/Materiaux et Constructions, Vol-55, No. 7
Springer Science and Business Media B.V.
https://doi.org/10.1617/s11527-022-02039-y https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138245293&doi=10.1617%2fs11527-022-02039-y&partnerID=40&md5=defe0aa7257e2af34b0e9c7184b61e4f
Zheng W., School of Highway, Changan University, Middle Section of Nanerhuan Road, Shaanxi, Xian, 710064, China; Yang Y., School of Highway, Changan University, Middle Section of Nanerhuan Road, Shaanxi, Xian, 710064, China; Chen Y., School of Highway, Changan University, Middle Section of Nanerhuan Road, Shaanxi, Xian, 710064, China; Yu Y., School of Highway, Changan University, Middle Section of Nanerhuan Road, Shaanxi, Xian, 710064, China; Hossiney N., Department of Civil Engineering, CHRIST University, Karnataka, Kumbalgodu, Bengaluru, 560074, India; Tebaldi G., Department of Engineering and Architecture, University of Parma, Parma, 43125, Italy
Biological Feature Selection and Classification Techniques for Intrusion Detection on BAT
Bat algorithm; Dataset; Intrusion detection system; Optimal features; SVM
Privacy is a significant problem in communications networks. As a factor, trustworthy knowledge sharing in computer networks is essential. Intrusion Detection Systems consist of security tools frequently used in communication networks to monitor, detect, and effectively respond to abnormal network activity. We integrate current technologies in this paper to develop an anomaly-based Intrusion Detection System. Machine Learning methods have progressively featured to enhance intelligent Anomaly Detection Systems capable of identifying new attacks. Thus, this evidence demonstrates a novel approach for intrusion detection introduced by training an artificial neural network with an optimized Bat algorithm. An essential task of an Intrusion Detection System is to maintain the highest quality and eliminate irrelevant characteristics from the attack. The recommended BAT algorithm is used to select the 41 best features to address this problem. Machine Learning based SVM classifier is used for identifying the False Detection Rate. The design is being verified using the KDD99 dataset benchmark. Our solution optimizes the standard SVM classifier. We attain optimal measures for abnormal behavior, including 97.2 %, the attack detection rate is 97.40 %, and a false-positive rate of 0.029 %. 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Narayanasami S.; Sengan S.; Khurram S.; Arslan F.; Murugaiyan S.K.; Rajan R.; Peroumal V.; Dubey A.K.; Srinivasan S.; Sharma D.K.
Wireless Personal Communications, Vol-127, No. 2, pp. 1763-1785.
Narayanasami S., Department of Computer Science and Engineering, St. Martins Engineering College, Telangana, Hyderabad, 500100, India; Sengan S., Department of Computer Science and Engineering, PSN College of Engineering and Technology, Tamil Nadu, Tirunelveli, 627152, India; Khurram S., Biology Teacher, Teaching Human Social Biology and Applied Sciences, Roots IVY International Schools, Punjab, Faisalabad, 38000, Pakistan; Arslan F., University of Engineering and Technology, Punjab, Lahore, 39161, Pakistan; Murugaiyan S.K., Department of Information Technology, Sri Sai Ram Engineering College, Tamil Nadu, Chennai, 600044, India; Rajan R., Department of Computer Science and Engineering, Adhiyamaan College of Engineering, Tamil Nadu, Hosur, 635109, India; Peroumal V., School of Electronics Engineering, Vellore Institute of Technology, Tamil Nadu, Chennai, 600048, India; Dubey A.K., Department of Computer Science and Engineering, ABES Engineering College, Uttar Pradesh, Ghaziabad, 201009, India; Srinivasan S., Department of Electronics and Communications Engineering, School of Engineering and Technology, Christ (Deemed to be University), Karnataka, Bangalore, 560029, India; Sharma D.K., Department of Mathematics, Jaypee University of Engineering and Technology, Madhya Pradesh, Guna, 473226, India
An Adaptive Cluster based Vehicular Routing Protocol for Secure Communication
Delay time; Optimization; Packet loss and data broadcasting ratio; Throughput; Vehicle Ad-hoc network
In todays scenario, Vehicular Ad-hoc Network (VANET) is one of the modern fields in vehicle communication; it includes a large number of nodes that can be changed arbitrarily with the ability to link or exit the system anytime. Moreover, it has various complexities because of the attacks model in the transmission and communication channel. Besides, most of the attacks are known as black hole attack and wormhole attack. The presence of these attacks causes large damage in the data broadcasting region that ends in data drops or collapses. To defeat these problems, a novel Clustered Vehicle Location protocol for Hybrid Krill Herd and Bat Optimization (CVL-HKH-BO) technique is proposed. Thus, the proposed mechanism of hybrid krill herd and bat optimization is to detect and prevent attacks based on the fitness function. Moreover, secure communication can be enhanced by the proposed technique. Consequently, the solution to energy consumption and packet delay issues are solved using the CVL protocol. The projected strategy is implemented in the Network simulator (Ns-2) platform, and the outcomes show the node energy, overload and delay are minimized by increasing the quantity of packets transmitted in the network. Sequentially, the proposed technique is compared with existing techniques in terms of throughput, packet loss, delay time and data broadcasting ratio. Therefore, the duration of the node can be enhanced and can attain high energy capable data transmission. 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Wireless Personal Communications, Vol-127, No. 2, pp. 1717-1736.
Divya N.S., Department of Computer Science and Engineering, Koneru Lakshmaiah Education Foundation, Andhra Pradesh, Vaddeswaram, 520002, India; Bobba V., Department of Computer Science and Engineering, TKR College of Engineering and Technology, Telangana, Hyderabad, 500097, India; Vatambeti R., Department of Computer Science and Engineering, CHRIST (Deemed to be University), Bangalore, 560072, India
IPWM Based IBMSC DC-AC Converter Using Solar Power for Wide Voltage Conversion System; [Convertisseur DC-AC IBMSC bassur l'IPWM et utilisant l'ergie solaire pour un syste de conversion large tension]
This article proposes isolated bidirectional micro dc-ac single phase controlled (IBMSC) converter based on in-phase-voltage pulsewidth modulation (IPWM). This resonant IPWM converter, ratio of voltage conversion can be controlled from 0 to ?. So, this converter is highly referred for huge range voltage conversion. However, voltage conversion ratio determines power transfer direction and duty ratio. Power flow direction and duty cycle value can be varying smoothly, so it is suitable for dc-ac bidirectional power conversion application. Inverter mode and also rectifier mode are possible from bidirectional operation, which is controlled by a unified current controller. The proposed solution can achieve smooth switching grid operation with high efficiency. Working principle, design procedure, control strategy, and characteristics of the proposed converter are implemented with a prototype model of power rating 500 W with a voltage range of 20-50 V to test the ability of withstanding. Performance, feasibility, and effectiveness of the proposed converter are tested with this hardware test-bench model. 2022 IEEE.
IEEE Canadian Journal of Electrical and Computer Engineering, Vol-45, No. 4, pp. 394-400.
https://doi.org/10.1109/ICJECE.2022.3207873 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152801358&doi=10.1109%2fICJECE.2022.3207873&partnerID=40&md5=6ed32111baa1638c718bb6bb7141e49b
Suresh K., The Department of EEE, Christ (deemed to be university), Bengaluru, 517102, India; Parimalasundar E., The Department of EEE, Sree Vidyanikethan Engineering College, Tirupati, 517102, India
From maximum force to the field equations of general relativity and implications
field equations; General relativity; maximum force; maximum power
There are at least two ways to deduce Einstein's field equations from the principle of maximum force c4/4G or from the equivalent principle of maximum power c5/4G. Tests in gravitational wave astronomy, cosmology, and numerical gravitation confirm the two principles. Apparent paradoxes about the limits can all be resolved. Several related bounds arise. The limits illuminate the beauty, consistency and simplicity of general relativity from an unusual perspective. 2022 World Scientific Publishing Company.
International Journal of Modern Physics D, Vol-31, No. 14
Kenath A., CHRIST (deemed to be University), Bangalore, India; Schiller C., Motion Mountain Research, Munich, Germany; Sivaram C., Indian Institute of Astrophysics, Bangalore, India
Potential, prospects, and problems of textile tourism in Kerala
Community-based tourism; Khadi textile industries; Poverty alleviation; Textile tourism
Tourism in the textile industry has tremendous potential for future growth and development of local economies and rural communities, building upon the services provided by local governments. This study focuses on Khadi textile business operations, with a particular emphasis on textile-based businesses, and provides visitor perceptions of textile tourism. It discusses the possibilities and challenges in the local textile industry, including the dificulties faced by the weavers in marketing their goods to tourists and exporters. The questionnaire survey applied to 120 visitors from three different khadi shops in Kozhikode, Kerala. According to the study's findings, textile business centres require strategic promotional approaches to boost textile tourism. The major hurdle for weavers and independent producers is a lack of direct access to visitors, as well as access to information controlled by producers, commercial interests, and gallery owners. more in the future to expand the reach of this type of tourism. The potential role that the government and tourism authorities may play an important role in designing policies that may grant this form of tourism increased visibility. 2022, Universidade de Aveiro. All rights reserved.
Journal of Tourism and Development, Vol-39, pp. 451-461.
https://doi.org/10.34624/rtd.v39i0.30477 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139255889&doi=10.34624%2frtd.v39i0.30477&partnerID=40&md5=3e7c316aeb0a01b5b304df60b2fd6da8
Nikhilraj K., Christ University, Bangalore, India; Thomas J., Christ University, Yeshwanthpur Campus, Bangalore, India
Secure Image Transmission Scheme based on DNA Sequences
Ciphertext; Cryptography; Data security; DNA sequences; Performance evaluation; steganography
Cryptography and steganography are the most widely utilized and adopted fields of secure data communication. Data transfer can be secured using a combination of these methods. The data is transmitted from sender to receiver using cryptography, the most secure method. At the same time, steganography performs the information hiding in the form of video, image, or text within a cover image. The sensitive data is hidden, so it is not visible to the human eye. The data is stored and transferred more securely by adding DNA technology to the cryptography. It provides additional data security level and is most commonly employed to implement computation. This research developed a new method for combining cryptography with steganography. There are two phases to the proposed method: image encryption and hide phases and image extraction phases. Encryption is done by using the Signcryption algorithm. Four standard images were utilized as test material for the evaluation. Four factors are used to determine the performance of the proposed method as Peak signal-to-noise ratio (PSNR), Mean Square Error, Entropy, and Structural Similarity Index Measure (SSIM) for hiding and extracting the messages. The implementation is done in python. The proposed method achieves better performance when compared to the previously published works. 2022 Seventh Sense Research Group
International Journal of Engineering Trends and Technology, Vol-70, No. 9, pp. 194-206.
https://doi.org/10.14445/22315381/IJETT-V70I9P220 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139737290&doi=10.14445%2f22315381%2fIJETT-V70I9P220&partnerID=40&md5=5a4587ecc4e564865aeb0688503e5c78
Padmanabhan A.S., CHRIST (Deemed to be University), S.G. Palya Karnataka, Bengaluru, India; Sapna S., CHRIST (Deemed to be University), S.G. Palya Karnataka, Bengaluru, India
Fast and effective removal of textile dyes from the wastewater using reusable porous nano-carbons: a study on adsorptive parameters and isotherms
Adsorption; Methylene blue; Onion Peels; Porous nano-carbons; Speedy removal; Wastewater; Wastewater
In the present study, recyclable porous nano-carbons (PNCs) were used to remove textile dyes (mainly methylene blue, methyl orange, and rhodamine B) from an aqueous environment. Due to their high surface area and mesoporous nature, PNCs exhibited extremely fast and efficient adsorption behavior. PNCs synthesized at an elevated temperature of 1000 C are used in batch experiments, as they showed maximum dye removal with high surface area. Batch mode was used to optimize operational parameters such as initial dye concentration, contact time, adsorbent dose and pH as a function of time. Within ~7 minutes of treatment, PNCs achieved a maximum removal efficacy of ~99 percent for methylene blue. The recyclability of PNCs was investigated, and it retained its efficiency even after seven cycles. The efficacy of PNCs in treating industrial water contaminated with methylene blue dye was assessed. Different adsorption isotherms were carried out to determine maximum amount of dye that can be adsorbed on to surface of PNCs. The maximum adsorption capacity attained using Langmuir isotherm for methylene blue was around 1216.54 mg g-1. Adsorption kinetics were applied on experimental data to identify the rate of adsorption. It was confirmed that novel onion peel-based porous PNCs were successful in removing methylene blue dye effectively with short duration in comparison with other dyes mainly rhodamine B and methyl orange. Graphical abstract: [Figure not available: see fulltext.] 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
Krishnappa B.; Saravu S.; Shivanna J.M.; Naik M.; Hegde G.
Environmental Science and Pollution Research, Vol-29, No. 52, pp. 79067-79081.
Springer Science and Business Media Deutschland GmbH
ISSN: 9441344; PubMed ID: 35704233; CODEN: ESPLE
Krishnappa B., Centre for Nano-materials & Displays, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India, Department of Civil Engineering, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India; Saravu S., Centre for Nano-materials & Displays, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India, Department of Chemistry, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India; Shivanna J.M., Department of Chemistry, AMC Engineering College, Bannerghatta Road, Bengaluru, 560083, India; Naik M., Department of Civil Engineering, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India; Hegde G., Centre for Nano-materials & Displays, B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Karnataka, Bengaluru, 560 019, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India