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1,021 results on '"Ghosh, Arpita"'

1. Partial semigroup partial dynamical systems and Partial Central Sets

Author

Goodarzi, H., Tootkaboni, M. A., and Ghosh, Arpita

Subjects
Mathematics - Combinatorics, Mathematics - Dynamical Systems, 2020 MSC: 37B02, 22A15 Secondary: 05D10. 37B02, 22A15, 05D10
Abstract

H. Furstenberg defined Central sets in $\mathbb{N}$ by using the notions of topological dynamics, later Bergelson and Hindman characterized central sets in $\mathbb{N}$ and also in arbitrary semigroup in terms of algebra of Stone-\v{C}ech compactification of that set. We state the new notion of large sets in a partial semigroup setting and characterize the algebraic structure of the sets by using the algebra of Stone-\v{C}ech compactification. By using these notions, we introduce the \emph{Partial Semigroup Partial Dynamical System(PSPDS)} and show that topological dynamical characterization of central sets in a partial semigroup is equivalent to the usual algebraic characterization.

Published
2024

6. Combinatorially rich sets in partial semigroups

Author

Ghosh, Arpita

Subjects
Mathematics - Combinatorics, 05D10
Abstract

The notion of combinatorially rich set was first introduced by V. Bergelson and D. Glasscock. The goal of this paper is to study these subsets in the setting of adequate partial semigroups and describes its connection with the other concepts of large sets., Comment: 12 pages, comments are welcome

Published
2023

8. Numerical Simulation to Predict Critical Hotspot Temperature in Blast Furnace Blowpipe to Avoid Industrial Hazard

Author

Usha, Y., Tewary, Suman, Ghosh, Arpita, Dutta, Chandan, Metya, Avijit K., Palit Sagar, S., 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, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Ghose, Bikash, editor, Mulaveesala, Ravibabu, editor, and Mylavarapu, Phani, editor

Published
2024
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9. Detection of FDI Attacks on Power Grid Using Graph-Theoretical Methods

Author

Ghosh, Arpita, Purwar, Shubhi, 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, Shrivastava, Vivek, editor, Bansal, Jagdish Chand, editor, and Panigrahi, B. K., editor

Published
2024
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19. Anisotropic generalization of Buchdahl bound for specific stellar models

Author

Sharma, Ranjan, Ghosh, Arpita, Bhattacharya, Soumik, and Das, Shyam

Subjects
Physics - General Physics
Abstract

Anisotropy is one factor that appears to be significantly important in the studies of relativistic compact stars. In this paper, we make a generalization of the Buchdahl limit by incorporating an anisotropic effect for a selected class of exact solutions describing anisotropic stellar objects. In the isotropic case of a homogeneous distribution, we regain the Buchdahl limit $2M/R \leq 8/9$. Our investigation shows a direct link between the maximum allowed compactness and pressure anisotropy vi-a-vis geometry of the associated $3$-space., Comment: To appear in Euro. Phys. J C

Published
2021
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22. Brain Hemorrhage Classification Using Leaky ReLU-Based Transfer Learning Approach

Author

Ghosh, Arpita, Soni, Badal, Baruah, Ujwala, 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, Das, Swagatam, editor, Saha, Snehanshu, editor, Coello Coello, Carlos A., editor, and Bansal, Jagdish Chand, editor

Published
2023
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23. Experimental Verification of Improved SSI-COV Method for Health Monitoring of Base-Excited RC Structures

Author

Ghosh, Arpita, Chakraborty, Arunasis, Dutta, Anjan, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Shrikhande, Manish, editor, Agarwal, Pankaj, editor, and Kumar, P. C. Ashwin, editor

Published
2023
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28. Mathematical Foundations for Social Computing

Author

Chen, Yiling, Ghosh, Arpita, Kearns, Michael, Roughgarden, Tim, and Vaughan, Jennifer Wortman

Subjects
Computer Science - Computers and Society, Computer Science - Human-Computer Interaction
Abstract

Social computing encompasses the mechanisms through which people interact with computational systems: crowdsourcing systems, ranking and recommendation systems, online prediction markets, citizen science projects, and collaboratively edited wikis, to name a few. These systems share the common feature that humans are active participants, making choices that determine the input to, and therefore the output of, the system. The output of these systems can be viewed as a joint computation between machine and human, and can be richer than what either could produce alone. The term social computing is often used as a synonym for several related areas, such as "human computation" and subsets of "collective intelligence"; we use it in its broadest sense to encompass all of these things. Social computing is blossoming into a rich research area of its own, with contributions from diverse disciplines including computer science, economics, and other social sciences. Yet a broad mathematical foundation for social computing is yet to be established, with a plethora of under-explored opportunities for mathematical research to impact social computing. As in other fields, there is great potential for mathematical work to influence and shape the future of social computing. However, we are far from having the systematic and principled understanding of the advantages, limitations, and potentials of social computing required to match the impact on applications that has occurred in other fields. In June 2015, we brought together roughly 25 experts in related fields to discuss the promise and challenges of establishing mathematical foundations for social computing. This document captures several of the key ideas discussed., Comment: A Computing Community Consortium (CCC) workshop report, 15 pages

Published
2020

30. Essays on the political economy of crime and punishment

Author

Ghosh, Arpita

Subjects
United States, crime, punishment, laws, vote suppression, medical marijuana, thesis
Abstract

The criminal justice system in the United States is characterized by racial disparity, mass incarceration, and often police brutality. Using a variety of administrative and survey datasets, this thesis analyses these three distinct features in the context of changing laws. The first set of results identifies the extent to which African American communities are penalized by the imposition of barriers to voting by ex-felons, who are disproportionately Black. It finds that vote suppression mechanisms can reduce political representation by members of these communities and lead to less liberal state policy choices. In light of the changes in the political landscape of the US in the past decade, this chapter explores one of the main racial disparity issues of American politics. Moreover, this thesis also teases out the effect of changes in Medical Marijuana Laws on the composition of crime and the prison population, by conceptualising the impact of these laws as a shock to the labour market opportunities of offenders. As countries around the world start adopting laws legalising and/or decriminalising marijuana possession and consumption, these results provide evidence as to how these laws affect the rate of other crimes. We show that these laws affect criminals from different age groups differently and also influence drug use patterns amongst them. Finally, the last part of this thesis explores the effect of police department restructuring on crime and clearance rates as measures of police performance. In the background of the death of George Floyd in Minneapolis in May 2020 and the subsequent increased interest about radical changes to policing strategy, we study one of the few prior examples of such a change. We show that in this case police reforms did not translate to lower measured levels of crime. Although they do improve clearance rates for some crimes, suggesting a complex causal relationship between policing, crime, and clearance rates.

Published
2021
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38. Functional Limitations, Post-Traumatic Stress Disorder, and College Adjustment in Student Veterans: A Mediation Analysis Study

Author

Umucu, Emre, Rumrill, Phillip, Chiu, Chung-Yi, and Ghosh, Arpita

Abstract

Purpose: The purpose of this study was to examine whether functional limitations mediate the relation between PTSD symptoms and college life adjustment in student veterans with PTSD symptoms. Methods: A total of 232 student veterans with PTSD symptoms were recruited for this study. Participants were predominantly male (84.5%; females = 15.5%). Participants' ages ranged from 18 to 54 years (M = 28.43, SD = 5.42). Correlational analyses were conducted to calculate the relationships among study variables. We also conducted a mediation analysis to examine whether functional limitations mediate the relationship between PTSD symptoms and college life adjustment. Results: The mediation analysis indicated that the effect of PTSD symptoms on college adjustment can be partially explained by functional limitations. Conclusion: Our results have potentially important implications for rehabilitation counseling researchers and clinicians in the COVID-19 era.

Published
2022
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41. Predictors of Academic Distress among Military and Nonmilitary College Students

Author

Ghosh, Arpita, Niileksela, Christopher R., Janis, Rebecca, and Fox, Troy D.

Abstract

This study assessed the mental health predictors of academic distress using the Counseling Center Assessment of Psychological Symptoms--34 (Locke et al., 2011) across matched pairs (N = 2,836) of military and nonmilitary students accessing counseling services between 2014 and 2016. Findings suggested the predictors of academic distress did not differ across the two groups. Practical suggestions for counselors working with military and nonmilitary students are discussed based on the findings.

Published
2021
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42. A study on some combinatorial sets in partial semigroups

Author

Ghosh, Arpita

Subjects
Mathematics - Combinatorics
Abstract

In this article, we investigate the image and preimage of the important combinatorial sets such as central sets, $C$-sets, and $J_\delta$-sets which play an important role in the study of combinatorics under certain partial semigroup homomorphism. Using that we prove certain results which deal with the existence of $C$-set which are not central in partial semigroup framework., Comment: Updated version. 14 pages. Comments are welcome! arXiv admin note: text overlap with arXiv:1809.01960, and with arXiv:1810.05097 by other authors

Published
2019

45. A Generalized Central Sets Theorem In Partial Semigroups

Author

Ghosh, Arpita

Subjects
Mathematics - Combinatorics, 05D10
Abstract

The most powerful formulation of the Central Sets Theorem in an arbitrary semigroup was proved in the work of De, Hindman, and Strauss. The sets which satisfy the conclusion of the above Central Sets Theorem are called $C$-sets. The original Central Sets Theorem was extended by J. McLeod for adequate commutative partial semigroups. In this work, we will extend the Central Sets Theorem obtained by taking all possible adequate sequences in a commutative adequate partial semigroup. We shall also discuss a sufficient condition for being a set $C$-set in our context., Comment: 10 pages. Final version. Accepted for publication in "Semigroup Forum". arXiv admin note: text overlap with arXiv:1309.7425, arXiv:1706.10010, arXiv:1302.4270, arXiv:1508.05280, arXiv:1711.06054, arXiv:1707.00787, arXiv:1703.05531 by other authors

Published
2018

46. Classification of Brain Hemorrhage Using Fine-Tuned Transfer Learning

Author

Ghosh, Arpita, Soni, Badal, Baruah, Ujwala, Murugan, R., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, 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, Hirche, Sandra, 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, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, 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, Gupta, Deepak, editor, Sambyo, Koj, editor, Prasad, Mukesh, editor, and Agarwal, Sonali, editor

Published
2022
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47. Arduino and ESP32-CAM-Based Automatic Touchless Attendance System

Author

Kumar, Sumit, Sharma, Kajal, Raj, Gaurav, Datta, Dishani, Ghosh, Arpita, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, 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, Hirche, Sandra, 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, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, 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, Sikdar, Biplab, editor, Prasad Maity, Santi, editor, Samanta, Jagannath, editor, and Roy, Avisankar, editor

Published
2022
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50. Diel Variations in Abundance of Microbial Communities in the Coastal Waters of the Subtropical Western Pacific in Spring: Potential Role of Picoeukaryotes

Author

Chen, Patrichka Wei-Yi, primary, Olivia, Madeline, additional, Mukhanov, Vladimir, additional, Sitorus, Grace, additional, Margarita, Ufimtseva, additional, Tatiana, Liashko, additional, Evgenii, Sakhon, additional, Supriyadi, Supriyadi, additional, Puspitasari, Intan Dwi, additional, Ghosh, Arpita, additional, and Tsai, An Yi, additional

Published
2024
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