4,149 research outputs found
Optimizing cost through dynamic stochastic resetting
No full textThe cost of stochastic resetting is considered within the context of a discrete random walk (RW) model. In addition to standard stochastic resetting, for which a reset occurs with a certain probability after each step, we introduce a novel resetting protocol which we dubbed dynamic resetting. This protocol entails an additional dynamic constraint related to the direction of successive steps of the RW. We study this novel protocol for a one-dimensional RW on an infinite lattice. We analyze the impact of the constraint on the walker's mean-first passage time and the cost (fluctuations) of the resets as a function of distance of target from the resetting location. Further, cost optimized search strategies are discussed
Dynamics of switching processes: general results and applications in intermittent active motion
No full textParticle shows a propelling active motion with intermittent passive Brownian motion.Systems switching between different dynamical phases is a ubiquitous phenomenon. The general understanding of such a process is limited. To this end, we present a general expression that captures fluctuations of a system exhibiting a switching mechanism. Specifically, we obtain an exact expression of the Laplace-transformed characteristic function of the particle's position. Then, the characteristic function is used to compute the effective diffusion coefficient of a system performing intermittent dynamics. Furthermore, we employ two examples: (1) generalized run-and-tumble active particle, and (2) an active particle switching its dynamics between generalized active run-and-tumble motion and passive Brownian motion. In each case, explicit computations of the spatial cumulants are presented. Our findings reveal that the particle's position probability density function exhibit rich behaviours due to intermittent activity. Numerical simulations confirm our findings.Particle shows a propelling active motion with intermittent passive Brownian motion.Systems switching between different dynamical phases is a ubiquitous phenomenon. The general understanding of such a process is limited. To this end, we present a general expression that captures fluctuations of a system exhibiting a switching mechanism. Specifically, we obtain an exact expression of the Laplace-transformed characteristic function of the particle's position. Then, the characteristic function is used to compute the effective diffusion coefficient of a system performing intermittent dynamics. Furthermore, we employ two examples: (1) generalized run-and-tumble active particle, and (2) an active particle switching its dynamics between generalized active run-and-tumble motion and passive Brownian motion. In each case, explicit computations of the spatial cumulants are presented. Our findings reveal that the particle's position probability density function exhibit rich behaviours due to intermittent activity. Numerical simulations confirm our findings.Deutsche Forschungsgemeinschaft https://doi.org/10.13039/501100001659NordForsk https://doi.org/10.13039/50110000478
Green approaches to biocomposite materials science and engineering/ Deepak Verma, Siddharth Jain, Xiaolei Zhang, and Prakash Chandra Gope, editors.
No full textIncludes bibliographical references and index."This book explores timely research on the various available types of natural fibers and the use of these fibers as a sustainable alternative to synthetic fibers and polymers by emphasizing research-based solutions for sustainability across various industries"--Provided by publisher.Natural fibers for the production of green composites / Xiaolei Zhang [and 3 others] -- Processing technologies for green composites production / Deepak Verma, Garvit Joshi, Rajneesh Dabral -- Concurrent design of green composites / Muhd Ridzuan Mansor [and 5 others] -- Effect of bamboo hybridization and staking sequence on mechanical behavior of bamboo-glass hybrid composite / Piyush P. Gohil [and 3 others] -- Estimation of mechanical and tribological properties of epoxy-based green composites / Supriyo Roy [and 3 others] -- Fabrication and processing of pineapple leaf fiber reinforced composites / S. H. Sheikh Md. Fadzullah, Zaleha Mustafa -- Green composites and their properties: a brief introduction / Deepak Verma [and 4 others] -- Rice husk reinforcement in polymer composites / Sanjay Sharma, Deepak Verma -- Techno-economic and life cycle assessment for the production of green composites / Siddharth Jain, Xiaolei Zhang -- Banana fiber reinforcement and application in composites: a review / Abhinav Shandilya, Ayush Gupta, Deepak Verma -- Bamboo fiber-reinforced composites / Irem Sanal -- Coir fiber-reinforced composites / Irem Sanal.1 online resource (322 pages)
sj-pdf-1-pie-10.1177_09544089221085144 - Supplemental material for Modeling and optimization of Wire –EDM parameters for machining of Ni<sub>54.1</sub>Ti<sub>45.9</sub> shape memory alloy using hybrid approach
No full textSupplemental material, sj-pdf-1-pie-10.1177_09544089221085144 for Modeling and optimization of Wire –EDM parameters for machining of Ni54.1Ti45.9 shape memory alloy using hybrid approach by Deepak Kumar Gupta and Avanish Kumar Dubey in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Coarse-grained entropy production with multiple reservoirs: Unraveling the role of time scales and detailed balance in biology-inspired systems
Get PDFA general framework to describe a vast majority of biology-inspired systems is to model them as stochastic processes in which multiple couplings are in play at the same time. Molecular motors, chemical reaction networks, catalytic enzymes, and particles exchanging heat with different baths, constitute some interesting examples of such a modelization. Moreover, they usually operate out of equilibrium, being characterized by a net production of entropy, which entails a constrained efficiency. Hitherto, in order to investigate multiple processes simultaneously driving a system, all theoretical approaches deal with them independently, at a coarse-grained level, or employing a separation of time scales. Here, we explicitly take in consideration the interplay among time scales of different processes and whether or not their own evolution eventually relaxes toward an equilibrium state in a given subspace. We propose a general framework for multiple coupling, from which the well-known formulas for the entropy production can be derived, depending on the available information about each single process. Furthermore, when one of the processes does not equilibrate in its subspace, even if much faster than all the others, it introduces a finite correction to the entropy production. We employ our framework in various simple and pedagogical examples, for which such a corrective term can be related to a typical scaling of physical quantities in play.LB
Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae)
No full textNawani, Swati, Deepak, V., Gautam, Kumudani Bala, Gupta, Sandeep Kumar, Boruah, Bitupan, Das, Abhijit (2021): Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae). Zootaxa 4966 (3): 305-320, DOI: https://doi.org/10.11646/zootaxa.4966.3.
Semantic Question Classification Datasets
No full textThis is the datasets used in the following paper:Can Taxonomy Help? Improving Semantic Question Matching using Question TaxonomyPaper: http://aclweb.org/anthology/C18-1042If you use the dataset please cite the following paper:@InProceedings{C18-1042,
author = "Gupta, Deepak
and Pujari, Rajkumar
and Ekbal, Asif
and Bhattacharyya, Pushpak
and Maitra, Anutosh
and Jain, Tom
and Sengupta, Shubhashis",
title = "Can Taxonomy Help? Improving Semantic Question Matching using Question Taxonomy",
booktitle = "Proceedings of the 27th International Conference on Computational Linguistics",
year = "2018",
publisher = "Association for Computational Linguistics",
pages = "499--513",
location = "Santa Fe, New Mexico, USA",
url = "http://aclweb.org/anthology/C18-1042"
}
</div
Pulsatile flow dynamics in symmetric and asymmetric bifurcating vessels
No full textBifurcating vessel is a characteristic feature of biological systems such as arteries in the cardiovascular system and pulmonary airways. In cardiovascular system, the bifurcations are often asymmetric, flow is pulsatile, and the fluid, blood, shows a complex rheology. In this work, we study computationally pulsatile flow in planar symmetric and asymmetric, three-dimensional bifurcating vessels. The fluid is considered to be Newtonian as well as non-Newtonian following Carreau's model, and the results are compared. While the flow divides in the two daughter tubes equally in symmetric bifurcations, the flow distribution is time-dependent during a cardiac cycle in asymmetric bifurcations. The flow pattern changes significantly during a cardiac cycle. The secondary flow caused by a turning streamline is analyzed in terms of secondary velocity, vorticity, and helicity. Significant variation is observed in the secondary flow in a cardiac cycle. The secondary flow is observed to be stronger at the start of the diastole despite reduced flow rate. The separated flow on the outer wall causes a significant reduction in time-averaged wall shear stress, a biomarker to assess the possibility of atherosclerotic plaque development. While no significant difference is observed in the results obtained for Newtonian and non-Newtonian fluids at high shear rates, for example, during systole, significant differences are observed when the shear rate is low, during diastole or in the separation region. The velocity profile for the non-Newtonian fluid is observed to be flatter than that for Newtonian fluid. Further oscillatory shearing index, relative residence time, the parameters used as biomarkers are presented
sj-xlsx-1-otr-10.1177_22104917221080561 - Supplemental material for Correlation of tibiofemoral joint-space width with the clinico-radiological scoring of knee osteoarthritis – a comparison between anteroposterior and lyon-schuss radiographic views
No full textSupplemental material, sj-xlsx-1-otr-10.1177_22104917221080561 for Correlation of tibiofemoral joint-space width with the clinico-radiological scoring of knee osteoarthritis – a comparison between anteroposterior and lyon-schuss radiographic views by Divesh Jalan, Akshat Gupta, Pushpinder Khera, Suvinay Saxena, Deepak Maley and Abhay Elhence in Journal of Orthopaedics, Trauma and Rehabilitation</p
FIGURE 1 in Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae)
No full textFIGURE 1. Distributional map of Lycodon mackinnoni based on published records and the present study. (See Appendix 1 for locality records).Published as part of Nawani, Swati, Deepak, V., Gautam, Kumudani Bala, Gupta, Sandeep Kumar, Boruah, Bitupan & Das, Abhijit, 2021, Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae), pp. 305-320 in Zootaxa 4966 (3) on page 307, DOI: 10.11646/zootaxa.4966.3.3, http://zenodo.org/record/473666
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