Search

Your search keyword '"Dey, Rajesh"' showing total 129 results
Start Over Author "Dey, Rajesh"
129 results on '"Dey, Rajesh"'

1. Alternating and symmetric actions on surfaces

Author

Dey, Rajesh and Rajeevsarathy, Kashyap

Subjects
Mathematics - Geometric Topology, Primary 57K20, Secondary 57M60
Abstract

Let $\mathrm{Mod}(S_g)$ be the mapping class group of the closed orientable surface of genus $g \geq 2$. In this article, we derive necessary and sufficient conditions under which two torsion elements in $\mathrm{Mod}(S_g)$ will have conjugates that generate a finite symmetric or an alternating subgroup of $\mathrm{Mod}(S_g)$. Furthermore, we characterize when an involution would lift under the branched cover induced by an alternating action on $S_g$. Moreover, up to conjugacy, we derive conditions under which a given periodic mapping class is contained in a symmetric or an alternating subgroup of $\mathrm{Mod}(S_g)$. In particular, we show that symmetric or alternating subgroups can not contain irreducible mapping classes and hyperelliptic involutions. Finally, we classify the symmetric and alternating actions on $S_{10}$ and $S_{11}$ up to a certain equivalence we call weak conjugacy.

Published
2023

2. Investigating the Role of Industrial Design in Manufacturing and Production Firms: Identifying the Role of Engineering Concepts

Author

Raju, Valliappan, Dey, Rajesh, Usman, Azri, Ramzani, Sara Ravan, Kamalrudin, Massila, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Sikander, Afzal, editor, Zurek-Mortka, Marta, editor, Chanda, Chandan Kumar, editor, and Mondal, Pranab Kumar, editor

Published
2024
Full Text
View/download PDF

3. Developing Innovative Technology in Admission System for Chinese Higher Education Institutions: Explanatory Research on Cultural Identity Education

Author

Shrestha, Sandeep, Juan, Wang, Tao, Cui, Dey, Rajesh, Raju, Valliappan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Sikander, Afzal, editor, Zurek-Mortka, Marta, editor, Chanda, Chandan Kumar, editor, and Mondal, Pranab Kumar, editor

Published
2024
Full Text
View/download PDF

4. Multi-pitch Detection Using Complex Morlet Wavelet-Based Technique

Author

Banerjee, Debadrita, Kumar, Abhishek, Dey, Rajesh, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Sikander, Afzal, editor, Zurek-Mortka, Marta, editor, Chanda, Chandan Kumar, editor, and Mondal, Pranab Kumar, editor

Published
2024
Full Text
View/download PDF

5. Experimental Investigation and the CFD Modeling of a Invelox Type Wind Turbine

Author

Samanta, Hiranmoy, Saha, Debajit, Golui, Kamal, Dey, Rajesh, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Das, Sudev, editor, Mangadoddy, Narasimha, editor, and Hoffmann, Jaap, editor

Published
2024
Full Text
View/download PDF

6. Design of a Second Order System with Additional Actuating Signal for Desired Output

Author

Datta, Bipa, Das, Arnab, Dey, Rajesh, Das, Achintya, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Mandal, Jyotsna Kumar, editor, Hsiung, Pao-Ann, editor, and Sankar Dhar, Rudra, editor

Published
2022
Full Text
View/download PDF

7. Design Approach for Online Parameter Estimators for Unknown Two-Parameter First-Order Scalar Plant

Author

Das, Arnab, Datta, Bipa, Dey, Rajesh, Das, Achintya, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Mandal, Jyotsna Kumar, editor, Hsiung, Pao-Ann, editor, and Sankar Dhar, Rudra, editor

Published
2022
Full Text
View/download PDF

32. NOVEL SMART SOLAR SYSTEM BASED UMBRELLA DESIGN

Author

Monirujjaman Khan, Mohammad, primary, A Tasnim, Noor, additional, Bhatacharjee, Madhurima, additional, habibur Rahman, Kazi Md, additional, Arifur Rahman, H.M., additional, Dey, Rajesh, additional, and Nanda, Ipseeta, additional

Published
2022
Full Text
View/download PDF

35. Detecting Deepfake Images Using Deep Learning Techniques and Explainable AI Methods.

Author

Abir, Wahidul Hasan, Khanam, Faria Rahman, Alam, Kazi Nabiul, Hadjouni, Myriam, Elmannai, Hela, Bourouis, Sami, Dey, Rajesh, and Khan, Mohammad Monirujjaman

Subjects
DEEP learning, ARTIFICIAL intelligence, MACHINE learning, CONVOLUTIONAL neural networks, DEEPFAKES, TRUST
Abstract

Nowadays, deepfake is wreaking havoc on society. Deepfake content is created with the help of artificial intelligence and machine learning to replace one person’s likeness with another person in pictures or recorded videos. Although visual media manipulations are not new, the introduction of deepfakes has marked a breakthrough in creating fake media and information. These manipulated pictures and videos will undoubtedly have an enormous societal impact. Deepfake uses the latest technology like Artificial Intelligence (AI), Machine Learning (ML), and Deep Learning (DL) to construct automated methods for creating fake content that is becoming increasingly difficult to detect with the human eye. Therefore, automated solutions employed by DL can be an efficient approach for detecting deepfake. Though the “black-box” nature of the DL system allows for robust predictions, they cannot be completely trustworthy. Explainability is the first step toward achieving transparency, but the existing incapacity of DL to explain its own decisions to human users limits the efficacy of these systems. Though Explainable Artificial Intelligence (XAI) can solve this problem by interpreting the predictions of these systems. This work proposes to provide a comprehensive study of deepfake detection using the DL method and analyze the result of the most effective algorithm with Local Interpretable Model-Agnostic Explanations (LIME) to assure its validity and reliability. This study identifies real and deepfake images using different Convolutional Neural Network (CNN) models to get the best accuracy. It also explains which part of the image caused the model to make a specific classification using the LIME algorithm. To apply the CNN model, the dataset is taken from Kaggle, which includes 70 k real images from the Flickr dataset collected by Nvidia and 70 k fake faces generated by StyleGAN of 256 px in size. For experimental results, Jupyter notebook, TensorFlow, NumPy, and Pandas were used as software, InceptionResnetV2, DenseNet201, InceptionV3, and ResNet152V2 were used as CNN models. All these models’ performances were good enough, such as InceptionV3 gained 99.68% accuracy, ResNet152V2 got an accuracy of 99.19%, and DenseNet201 performed with 99.81% accuracy. However, InceptionResNetV2 achieved the highest accuracy of 99.87%, which was verified later with the LIME algorithm for XAI, where the proposed method performed the best. The obtained results and dependability demonstrate its preference for detecting deepfake images effectively. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

38. Development of a Low-Cost CNC Machine Laser Engraver

Author

Khan, Zain Hossain, primary, Rahman, Tashinur, additional, Arabi, Salman, additional, Mohammad, Siddhartha, additional, Khan, Mohammad Monirujjaman, additional, Dey, Rajesh, additional, Nanda, Ipseeta, additional, and Mukherjee, Debasis, additional

Published
2021
Full Text
View/download PDF

41. Novel Design of UWB Jeans Based Textile Antenna for Body-Centric Communications.

Author

Khan, Mohammad Monirujjaman, Yeboah-Akowuah, Bright, Islam, Kaisarul, Tchao, Eric Tutu, Bhattacharyya, Sumanta, Dey, Rajesh, Masud, Mehedi, and Alraddady, Fahad

Subjects
ULTRA-wideband antennas, DENIM, ANTENNA radiation patterns, PERFORMANCE evaluation, BANDWIDTHS
Abstract

This research presents an ultra-wideband (UWB) textile antenna design for body-centric applications. The antenna is printed on a 1 mm thick denim substrate with a 1.7 relative permittivity. The jeans substrate is sandwiched between a partial ground plane and a radiating patch with a Q-shaped slot. The slotted radiating patch is placed above the substrate and measures 27.8 mm × 23.8 mm. In free space, the antenna covers the ultra-wideband spectrum designated by the Federal Communication Commission (FCC). Various parameters of the antenna design were changed for further performance evaluation. Depending on the operating frequency, the antenna's realized gain varied from 2.7 to 5 dB. The antenna achieved high radiation efficiency with an omnidirectional radiation pattern. A parametric study was performed in research on varying antenna substrates and other components of the antenna. The three outermost layers of the human body are used to model a human phantom for on-body simulation. After that, the antenna was placed at five different distances from the phantom. The findings demonstrate that at close distances to the phantom, the antenna's gain and efficiency at lower frequencies are reduced. The antenna's radiation efficiency and gain were much higher at higher frequencies for distances greater than 6 mm. Compared to free space, the antenna's radiation pattern was more omnidirectional, especially at higher frequencies. This antenna is novel, compact and has an ultra wide bandwidth, a maximum of 94.60% radiation efficiency and a 5 dBi gain that will make it a good candidate for body-centric communications. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results