Communities in DSpace
Select a community to browse its collections.
Recent Submissions
Whale Optimization for Parameters Estimation of 4H-SiC MESFET Including Trappings and Thermal Effects
(IEEE Xplore, 2026) Gowtham Raj R;Mohammad Aasim Khan;Abhishek Agarwal;G. Divya;Upendra Aswal;R. Ahila;N. Karuppiah;Suresh Kakinatla
4H-SiC MESFETs are used for many applications including home, industries, and many more. Many approaches are available to analyze the model of the 4H-SiC MESFETs. The examination of MESFETs in relation to their direct current characteristics is a complex endeavor. This paper focuses on three primary factors that influence these characteristics: surface trapping, thermal effects, and substrate trapping. By exploring these effects, we aim to provide a clearer understanding of the DC behavior of MESFETs. The model for the current-voltage (I-V) characteristics that we present is based on the Caughey-Thomas configuration. This model effectively addresses the trapping of electrons in the substrate through various deep-level trapping mechanisms, takes into account the field-dependent mobility of electrons, and provides a detailed analysis of the two-dimensional charge distribution that occurs beneath the gate of the MESFET. This proposed method is comprehensive, accounting for all significant thermal effects and material flaws, including traps. Despite the challenges posed by the complexity of intricate mathematical equations associated with the 4H-SiC MESFET, which are essential for deriving accurate I-V characteristics across different operational regions, a solution is sought. To tackle this issue, the Whale Optimization Algorithm (WOA) is utilized, enabling the effective resolution of multiple complex equations related to the 4H-SiC MESFET. This approach ensures that the resulting I-V characteristics are precise and reliable. As a result, the performance of the analytical model developed closely mirrors that of a real 4H-SiC MESFET. Additionally, various behavioral traits of the model are obtained and thoroughly evaluated using the MATLAB programming.
Transparent PEM-FC Performance Analysis under the Optimal Clamping Pressure Applied at its Bolts
(IEEE Xplore, 2026) B. Srinivasarao, Mohammad Aasim Khan, E V Naga Lakshmi, P. Venkata Prasad, Smruti Ranjan Nayak, Krishna Chaithanya Janapati, Edrees Yahya Alhawsawi, Thresia Michael, Ajay Sudhir Bale
Fuel cells are gaining their attention recently due to the increasing of their applications in various sectors. The study involved conducting experiments on a titanium gas distributor plates (GDPs) equipped single transparent proton exchange membrane fuel cell (PEM-FC). This research focuses on analyzing how various factors influence the performance of PEM-FC, including clamping pressure, which is determined by the applied torque to each bolt, the humidification temperatures of both the cathode and anode, the overall temperature of the PEM-FC, and the flow rate of the cathode. The findings indicate that the performance of the PEM-FC initially increases to a maximum point before declining with further increases in torque at bolts. Additionally, it was observed that as the humidification temperature of the cathode rises, the performance of the PEM-FC decreases, whereas an increase in the temperature of the PEM-FC itself can be able to improve performance. Furthermore, the reactant for humidification of the anode is crucial for enhancing the efficiency of PEM-FC. While the impact of the flow rate at cathode is minimal in the ohmic overpotential and activation regions, it becomes significantly important in the concentration overpotential region.
Integrated Pest Management: Concepts, Strategies and Advances
(Kalyani Publishers, 2026) Kalpana Bisht, Gouri Shankar Giri, Salman Ahmad
Non-Invariant Hypersurfaces of Quasi-Para-Sasakian Manifolds
(Springer, Cham, 2026) Shadab Ahmad Khan, Divesh Srivastava, Anis Ahmad, Toukeer Khan
In this research paper, we analyze a non-invariant hypersurfaces of a quasi-para-Sasakian manifold with (f , g, u, v, λ)-structure. The paper is divided into two sections. In the first section the properties of non-invariant hypersurfaces of a quasi-para-Sasakian manifold with (f , g, u, v,λ)-structure are discussed. In second section, the necessary and sufficient condition for totally umbilical non- invariant hypersurfaces equipped with (f , g, u, v, λ)-structure of a quasi-para- Sasakian manifold to be totally geodesic has been explored.
Actions Required
(Authors Press, New Delhi, 2016) Orus Ilyas, R.K. Sinha, Salim Javed, Sant Prakash, M. Shah Hussain, M.A. Khalid, Aisha Sultana, Ather A. Khan, A.G. Ponniah, D. Kapoor, Tahmina Shafiq, R. Dayal, Shweta Bhardwaj, Jamal A. Khan
"Build partnerships for biodiversity conservation
Constitute ""PA Management Committees"" to strengthen PA-people relationships. Local communities can be involved in management and decision-making processes of PAs, and also for developing an understanding about the value of such an exercise. The PA managers can act as member secretaries of such committees."