Search Results - "Samanta, G."

Impact of Fear Effect in a Two Prey-One Predator System with Switching Behaviour in Predation by Sahoo, Debgopal, Samanta, G. P.

“…We study a class of models in which generalist predator utilizes two distinct prey species as their food sources. Several field data and experiments exhibit…”
Get full text

Evolution of C-point singularities and polarization coverage of Poincaré–Bessel beam in self-healing process by Kumar, Subith, Pal, Anupam, Shiri, Arash, Samanta, G. K., Gbur, Greg

“…As a vector version of scalar Bessel beams, Poincaré–Bessel beams (PBBs) have attracted a great deal of attention due to their non-diffracting and self-healing…”
Get full text

A prey-predator fractional order model with fear effect and group defense by Das, Meghadri, Samanta, G. P.

“…In this work, a fractional-order prey-predator system with fear effect of predator on prey population and group defense has been proposed. The existence and…”
Get full text

Modelling the fear effect in a two-species predator–prey system under the influence of toxic substances by Das, Amartya, Samanta, G. P.

“…Effect of anti-predator defense due to fear of predator felt by prey and effect of toxic substance released by external sources on prey–predator system is a…”
Get full text

Modelling the role of optimal social distancing on disease prevalence of COVID-19 epidemic by Saha, Sangeeta, Samanta, G. P.

“…COVID-19 first spread from Wuhan, China in December 2019 but it has already created one of the greatest pandemic situations ever witnessed. According to the…”
Get full text

Robust, high brightness, degenerate entangled photon source at room temperature by Jabir, M. V., Samanta, G. K.

“…We report on a compact, simple and robust high brightness entangled photon source at room temperature. Based on a 30-mm-long periodically-poled potassium…”
Get full text

Impact of fear on a predator–prey system with prey-dependent search rate in deterministic and stochastic environment by Mondal, Sudeshna, Samanta, G. P.

“…A modified Holling type II (variable predator search rate rather than constant) predator–prey interaction has been proposed where apart from direct consumption…”
Get full text

Epidemic model of COVID-19 outbreak by inducing behavioural response in population by Saha, Sangeeta, Samanta, G. P., Nieto, Juan J.

“…COVID-19 has spread around the world since December 2019, creating one of the greatest pandemics ever witnessed. According to the current reports, this is a…”
Get full text

Harnessing nonlinear frequency upconversion of Talbot effect with flexible Talbot lengths by Bachimanchi, Harshith, Sarkar, Saumya J, Ebrahim-Zadeh, M, Samanta, G K

“…We report on a simple experimental scheme demonstrating nonlinear frequency upconversion of the Talbot effect with controllable Talbot lengths at high…”
Get full text

Generation of “perfect” vortex of variable size and its effect in angular spectrum of the down-converted photons by Jabir, M. V., Apurv Chaitanya, N., Aadhi, A., Samanta, G. K.

“…The “perfect” vortex is a new class of optical vortex beam having ring radius independent of its topological charge (order). One of the simplest techniques to…”
Get full text

Optimal control of a fractional order epidemic model with carriers by Das, Meghadri, Samanta, G. P.

“…In this work, a fractional-order S – I c – I – R epidemic model with carriers has been proposed where we have also studied the dynamics of the carrier model in…”
Get full text

An EPQ model of ramp type demand with Weibull deterioration under inflation and finite horizon in crisp and fuzzy environment by Pal, Shilpi, Mahapatra, G.S., Samanta, G.P.

“…This paper deals with an economic production model for deteriorating items with ramp type demand rate. A single item is produced and the finite rate of…”
Get full text

Optimal harvesting of a two species competition model with imprecise biological parameters by Sharma, Swarnali, Samanta, G. P.

“…In this paper a two competing species harvesting model with imprecise biological parameters has been developed. We have developed a method to handle these…”
Get full text

Tunable, high-power, high-order optical vortex beam generation in the mid-infrared by Sharma, Varun, Chaitanya Kumar, S, Samanta, G K, Ebrahim-Zadeh, M

“…We report the generation of tunable high-order optical vortices in the mid-infrared (mid-IR) using a picosecond optical parametric oscillator (OPO). The OPO is…”
Get full text

Controlled generation of vortex and vortex dipole from a Gaussian pumped optical parametric oscillator by Sharma, Varun, Aadhi, A, Samanta, G K

“…We report on direct generation of optical vortices from a continuous-wave (cw), Gaussian beam pumped doubly resonating optical parametric oscillator (DRO)…”
Get full text

Pelican–Tilapia interaction in Salton sea: an eco-epidemiological model with strong Allee effect and additional food by Mondal, Sudeshna, Samanta, G. P.

“…The effect of diseases in ecological system is an important issue from mathematical and experimental points of view. We have analysed the dynamic nature of an…”
Get full text

Optimal harvesting of prey–predator system with interval biological parameters: A bioeconomic model by Pal, D., Mahaptra, G.S., Samanta, G.P.

“…► We study the prey–predator model under imprecise biological parameters. ► We consider impreciseness as a form of an interval in nature. ► We introduce…”
Get full text

Modelling the effect of resource subsidy on a two-species predator-prey system under the influence of environmental noises by Das, Amartya, Samanta, G. P.

“…Our ecosystem is full of various types of food chain systems. Most of the species have more than one food source with various kinds of possible interactions…”
Get full text

Controlled generation of array beams of higher order orbital angular momentum and study of their frequency-doubling characteristics by Harshith, B. S., Samanta, G. K.

“…We report on a simple and compact experimental scheme to generate high-power, ultrafast, higher-order vortex-array beams. Simply by using a dielectric…”
Get full text

Dynamics of a Predator-Prey Population in the Presence of Resource Subsidy under the Influence of Nonlinear Prey Refuge and Fear Effect by Mondal, Sudeshna, Samanta, G. P., Nieto, Juan J.

“…In this work, our aim is to investigate the impact of a non-Kolmogorov predator-prey-subsidy model incorporating nonlinear prey refuge and the effect of fear…”
Get full text