scholarly journals Controlling crop pest with a farming awareness based integrated approach and optimal control

2021 ◽  
Author(s):  
Teklebirhan Abraha ◽  
Fahad Al Basir ◽  
Legesse Lemecha Obsu ◽  
Delfim F. M. Torres
Keyword(s):  
Optimal Control ◽  
Integrated Approach ◽  
Crop Pest ◽  
Farming Awareness

Role of farming awareness in crop pest management - A mathematical model

2019 ◽  
Vol 461 ◽  
pp. 59-67 ◽  
Author(s):  
Fahad Al Basir ◽  
Arnab Banerjee ◽  
Santanu Ray
Keyword(s):  
Mathematical Model ◽  
Pest Management ◽  
Crop Pest ◽  
Farming Awareness

A multi-delay model for pest control with awareness induced interventions — Hopf bifurcation and optimal control analysis

2020 ◽  
Vol 13 (06) ◽  
pp. 2050047
Author(s):  
Fahad Al Basir
Keyword(s):  
Optimal Control ◽  
Hopf Bifurcation ◽  
Time Delay ◽  
Time Delays ◽  
Control Strategies ◽  
Control Analysis ◽  
Agricultural Practice ◽  
Delay Model ◽  
Awareness Campaigns ◽  
Farming Awareness

Farming awareness is an important measure for pest controlling in agricultural practice. Time delay in controlling pest may affect the system. Time delay occurs in organizing awareness campaigns, also time delay may takes place in becoming aware of the control strategies or implementing suitable controlling methods informed through social media. Thus we have derived a mathematical model incorporating two time delays into the system and Holling type-II functional response. The existence and the stability criteria of the equilibria are obtained in terms of the basic reproduction number and time delays. Stability changes occur through Hopf-bifurcation when time delays cross the critical values. Optimal control theory has been applied for cost-effectiveness of the delayed system. Numerical simulations are carried out to justify the analytical results. This study shows that optimal farming awareness through radio, TV etc. can control the delay induced bifurcation in a cost-effective way.

Application of Optimal Control Theory to the Synthesis of High-Speed Cam-Follower Systems. Part 1: Optimality Criterion

1983 ◽  
Vol 105 (3) ◽  
pp. 576-584 ◽  
Author(s):  
M. Chew ◽  
F. Freudenstein ◽  
R. W. Longman
Keyword(s):  
Optimal Control ◽  
Control Theory ◽  
Dynamic Response ◽  
Optimal Control Theory ◽  
High Speed ◽  
Integrated Approach ◽  
Optimization Criterion ◽  
Design Stage ◽  
Trade Offs ◽  
Cam Follower

The synthesis of the parameters governing the dynamic response of high-speed cam-follower systems ideally involves an integrated approach capable of carrying out the tradeoffs necessary to achieve optimum dynamic response in the design stage. These trade-offs involve a balance between the system characteristics at the output and at the cam-follower interface. In this investigation optimal-control theory has been demonstrated to be a useful tool in developing such a tradeoff. Part 1 describes the development of an optimization criterion while Part 2 describes the application of optimal-control theory to the evaluation of system parameters satisfying the optimization criterion.

scholarly journals Farming awareness based optimum interventions for crop pest control

2021 ◽  
Vol 18 (5) ◽  
pp. 5364-5391
Author(s):  
Teklebirhan Abraha ◽  
◽  
Fahad Al Basir ◽  
Legesse Lemecha Obsu ◽  
Delfim F. M. Torres ◽  
...  
Keyword(s):  
Pest Control ◽  
Crop Pest ◽  
Farming Awareness

scholarly journals A Model for Pest Control using Integrated Approach: Impact of Latent and Gestation Delays

2021 ◽  
Author(s):  
M. H. Noor ◽  
Fahad Al Basir
Keyword(s):  
Pest Management ◽  
Pest Control ◽  
Equilibrium Points ◽  
Control Process ◽  
Integrated Approach ◽  
Stability Properties ◽  
Gestation Delay ◽  
Crop Pest ◽  
Latent Time ◽  
The Stability

Abstract In this article, we have established a mathematical model using impulsive differential equations for the dynamics of crop pest management in the presence of a pest with its predator and bio-pesticides. The pest population is divided into two subpopulations, namely, the susceptible pests and the infected pests. In this control process, bio-pesticides (generally virus) infect the susceptible pest through viral infection within the pest and make it infected so that predators can consume it quickly. We assume that pest controlling, using this integrated approach, is a delayed process and thus incorporated latent time of susceptible pest and gestation delay of predator in the model as time delay parameters. The system dynamics have been analyzed using qualitative theory: the existence of the equilibrium points and their stability properties has been derived. Hopf bifurcation of the coexisting equilibrium point is presented for both the delayed and non-delayed system. Detail numerical simulations are performed in support of analytical results and illustrate the different dynamical regimes observed in the system. We have observed that the system becomes free of infection when the latent time of the pest is large. Coexisting equilibrium exists for the lower value of latent delay, and it can change the stability properties from stable to unstable when it crosses its critical value. In contrast, gestation delay affects the stability switches of coexisting equilibrium only. The combined effect of the two delays on the system is shown numerically. Also, viral replication rate, infection rate (from virus to pest) is also significant from the pest management perspective. In summary, both the delay is essential for crop pest management, and pest control will be successful with tolerable delays.

855 Effect of an integrated approach to care on heart failure patients with hypertension

2007 ◽  
Vol 6 (1) ◽  
pp. 185-186
Author(s):  
E COSENTINO ◽  
E RINALDI ◽  
D DEGLIESPOSTI ◽  
S BACCHELLI ◽  
D DESANCTIS ◽  
...  
Keyword(s):  
Heart Failure ◽  
Integrated Approach ◽  
Heart Failure Patients

An Integrated Approach to Violence

2004 ◽  
Vol 49 (3) ◽  
pp. 337-338
Author(s):  
Robert T. Ammerman
Keyword(s):  
Integrated Approach

More Than an Apple a Day: An Integrated Approach to Keeping Our Children Healthy

PsycCRITIQUES ◽  
2004 ◽  
Vol 49 (Supplement 14) ◽  
Author(s):  
Christine T. Chambers ◽  
Elizabeth A. Job
Keyword(s):  
Integrated Approach
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