Prof. Rishi Kumar Tiwari | Physics | Best Researcher Award

Prof. Rishi Kumar Tiwari | Physics | Best Researcher Award

Professor at Govt. Model Science College, Rewa (M.P.), India

Dr. Rishi Kumar Tiwari is a distinguished Professor of Mathematics with over 30 years of academic service, currently holding a post secured through the Madhya Pradesh Public Service Commission (2011). He earned his Ph.D. in Mathematics from A.P.S. University, Rewa, in 1998, following an M.Sc. with a Gold Medal. With a prolific research portfolio including 134 national and international publications and six authored books, he has supervised 21 Ph.D. scholars and continues to guide research in cosmology, general relativity, and differential geometry. Dr. Tiwari has presented his work globally, including in Italy, Germany, and South Africa, contributing to international scientific collaborations. His accolades include the DST-ICTP Fellowship (Italy), IASc-INSA-NASI Summer Research Fellowship, and the Shikshavid Samman (2023). Having served as Head of Departments and on multiple academic boards, Dr. Tiwari remains committed to advancing mathematics through education, research, and international cooperation in theoretical physics and cosmology.

Professional Profile 

Education 

Dr. Rishi Kumar Tiwari holds a strong academic background in science and mathematics. He completed his Higher Secondary education from the Board of Secondary Education, Bhopal, in 1985 with a focus on Physics, Chemistry, and Mathematics. He earned his B.Sc. from A.P.S. University, Rewa, in 1988, and later completed his M.Sc. in Mathematics from the same university in 1990, earning an outstanding, which earned him a Gold Medal. He was awarded a Ph.D. in Mathematics from A.P.S. University in 1998. His doctoral work laid the foundation for a research career focused on general relativity, cosmological modeling, and tensor analysis. Dr. Tiwari’s academic credentials reflect a consistent record of academic excellence and deep subject mastery, serving as the cornerstone for his teaching, research, and scholarly contributions to the field of mathematics and cosmology over the last three decades.

Professional Experience 

Dr. Rishi Kumar Tiwari brings with him over 30 years of extensive teaching experience at both undergraduate and postgraduate levels. He has held several significant academic leadership roles, including Head of the Department of Mathematics and Computer Science at Pt. S.N. Shukla University, Shahdol, and formerly at Govt. Model Science College, Rewa. He has also been a member of various Boards of Studies across reputed institutions like A.P.S. University and Govt. T.R.S. College, Rewa. Selected through the M.P. Public Service Commission in 2011, Dr. Tiwari has not only imparted knowledge but also shaped curricula and research agendas. Under his mentorship, 21 Ph.D. scholars have completed their doctorates, with others currently under supervision. His ability to blend deep mathematical theory with modern cosmological applications makes him a respected academic figure in India. He continues to engage students and researchers in exploring advanced topics in mathematical physics.

Research Interest

Dr. Tiwari’s research interest lies primarily in the fields of General Relativity, Cosmology, Tensor Analysis, and Differential Geometry, with a particular emphasis on exploring homogeneous cosmological models and conharmonic curvature tensors. His contributions to understanding the expanding universe and dark energy models have been presented at premier international conferences, including the TAUP Series and the Texas Symposium on Relativistic Astrophysics. With 134 research papers in reputed journals and conferences, Dr. Tiwari has carved a niche in the academic study of mathematical models underpinning astrophysical phenomena. His involvement in UGC-funded research projects on Bianchi Models and Robertson-Walker cosmologies illustrates his commitment to foundational and applied research. Collaborating with institutions in South Africa and Europe, he frequently shares findings on time-varying deceleration parameters and symmetry models. His international exposure and research depth continue to influence global discussions on theoretical physics and contribute to the development of cosmological theory.

Award and Honors

Throughout his illustrious career, Dr. Rishi Kumar Tiwari has received several awards and fellowships that affirm his academic excellence and research impact. He was awarded the DST-ICTP Fellowship (Italy, 2008), recognizing his work in mathematical physics. In 2012, he received the prestigious IASc-INSA-NASI Summer Research Fellowship, further solidifying his standing in the Indian scientific community. His most recent recognition, the Shikshavid Samman from the Department of Higher Education, Madhya Pradesh (2023), honors his decades-long contribution to higher education and mentorship in mathematics. Additionally, Dr. Tiwari has received two major UGC research grants for his projects on cosmological models. These accolades, combined with invitations for popular and technical talks at institutions like the University of KwaZulu-Natal and Mangosuthu University in South Africa, showcase his international academic reputation. His dedication to theoretical exploration and student development continues to garner respect and admiration in the fields of mathematics and cosmology.

Publications Top Notes

  • Title: Perfect fluid Bianchi Type-I cosmological models with time varying G and Λ
    Authors: JP Singh, RK Tiwari
    Year: 2008
    Citations: 63
    Source: Pramana – Journal of Physics, Vol. 70 (4), pp. 565–574

  • Title: Bianchi type-I cosmological models with time dependent G and Λ
    Authors: RK Tiwari
    Year: 2008
    Citations: 43
    Source: Astrophysics and Space Science, Vol. 318 (3), pp. 243–247

  • Title: Phase transition of LRS Bianchi type-I cosmological model in f(R,T)f(R, T) gravity
    Authors: RK Tiwari, D Sofuoğlu, VK Dubey
    Year: 2020
    Citations: 42
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 17 (12), Article ID: 2050187

  • Title: Cosmological tests of parametrization q(z)q(z) in FLRW cosmology
    Authors: A Bouali, BK Shukla, H Chaudhary, RK Tiwari, M Samar, G Mustafa
    Year: 2023
    Citations: 41
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 20 (09), Article ID: 2350152

  • Title: Scenario of two-fluid dark energy models in Bianchi type-III Universe
    Authors: RK Tiwari, A Beesham, BK Shukla
    Year: 2018
    Citations: 41
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 15 (11), Article ID: 1850189

  • Title: Cosmological model with variable deceleration parameter in f(R,T)f(R, T) modified gravity
    Authors: RK Tiwari, A Beesham, B Shukla
    Year: 2018
    Citations: 38
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 15 (07), Article ID: 1850115

  • Title: Bianchi type-III cosmological models with gravitational constant G and the cosmological constant Λ
    Authors: JP Singh, RK Tiwari, P Shukla
    Year: 2007
    Citations: 36
    Source: Chinese Physics Letters, Vol. 24 (12), pp. 3325

  • Title: Anisotropic model with decaying cosmological term
    Authors: RK Tiwari, A Beesham
    Year: 2018
    Citations: 33
    Source: Astrophysics and Space Science, Vol. 363 (11), Article: 234

  • Title: Some Robertson-Walker models with time dependent G and Λ
    Authors: RK Tiwari
    Year: 2009
    Citations: 33
    Source: Astrophysics and Space Science, Vol. 321 (2), pp. 147–150

  • Title: Time varying G and Λ cosmology in f(R,T)f(R, T) gravity theory
    Authors: RK Tiwari, A Beesham, R Singh, LK Tiwari
    Year: 2017
    Citations: 31
    Source: Astrophysics and Space Science, Vol. 362 (8), Article: 143

  • Title: Transit cosmological models with domain walls in f(R, T) gravity
    Authors: RK Tiwari, A Beesham, A Pradhan
    Year: 2017
    Citations: 30
    Source: Gravitation and Cosmology, Vol. 23 (4), pp. 392–400

  • Title: Cosmological models with viscous fluid and variable deceleration parameter
    Authors: RK Tiwari, A Beesham, BK Shukla
    Year: 2017
    Citations: 30
    Source: The European Physical Journal Plus, Vol. 132 (1), Article: 20

  • Title: An LRS Bianchi type-I cosmological model with time-dependent Λ term
    Authors: JP Singh, RK Tiwari
    Year: 2007
    Citations: 27
    Source: International Journal of Modern Physics D, Vol. 16 (04), pp. 745–754

  • Title: Cosmographic studies of q(z)q(z) parametrization in f(R,T)f(R, T) framework
    Authors: BK Shukla, A Bouali, H Chaudhary, RK Tiwari, MS Martín
    Year: 2023
    Citations: 24
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 20 (14), Article ID: 2450007

  • Title: Quadratically varying deceleration parameter in f(R,T)f(R, T) gravity
    Authors: RK Tiwari, D Sofuoğlu
    Year: 2020
    Citations: 24
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 17 (10), Article ID: 2030003

Conclusion 

Dr. Rishi Kumar Tiwari stands as a paragon of dedication, intellect, and international engagement in the realm of mathematical sciences. From earning a Gold Medal in his master’s studies to mentoring 21 Ph.D. scholars and producing an expansive body of scholarly work, he exemplifies the ideals of academic leadership. His prolific research, particularly in the areas of general relativity and cosmological modeling, has transcended national borders, earning him respect across continents. Participation in global scientific platforms and collaborations with African and European institutions underline his commitment to knowledge exchange and cross-cultural academic growth. With multiple leadership roles in universities and active contributions to curriculum development and academic governance, Dr. Tiwari continues to shape the future of mathematical education and research in India. His legacy is built not only on research excellence but also on his lifelong mission to inspire, educate, and innovate in the ever-evolving landscape of mathematical physics.

Dr. Nan Liu | Physics | Best Researcher Award

Dr. Nan Liu | Physics | Best Researcher Award

Student at University of Science and Technology Beijing, China

Dr. Nan Liu 🎓 is a rising scholar in the domain of mechanics, renowned for her cross-disciplinary grasp of mathematics, physics, and materials science. With an ongoing Ph.D. at the University of Science and Technology Beijing 🏛️, she delves into the intricate world of crystal nucleus growth during solidification — a pivotal concept in materials engineering. Her analytical mindset 🌐 was shaped early on during her Master’s in Applied Mathematics and a Bachelor’s in Mathematics and Applied Math. Backed by national-level funding 💰 from the NSFC, her research is crucial to understanding the kinetics of nanosecond phase formation in copper alloys. With a methodical approach and a passion for deep theoretical exploration, Nan Liu’s academic arc reflects both precision and persistence. She symbolizes the future of multidisciplinary scientific investigation 🔍, standing at the intersection of abstract modeling and material behavior. Her journey is as structured as the crystals she studies — ordered, impactful, and evolving. ✨

Professional Profile 

📘 Education

Nan Liu’s 📚 academic odyssey is rooted in rigorous disciplines and thoughtful progression. She is currently pursuing a Ph.D. in General and Fundamental Mechanics at the University of Science and Technology Beijing (2020–2025), under the mentorship of Prof. Ming-Wen Chen 🧪. Her doctoral thesis focuses on crystal nucleus growth morphology — a vital concern in solidification science. Earlier, she earned a Master’s degree in Applied Mathematics (2016–2019) from Beijing Information Science & Technology University, exploring dynamic behaviors of nonlinear equations 🌀 under the guidance of Prof. Xiao-Yong Wen. Her journey began with a Bachelor’s in Mathematics and Applied Mathematics from Baotou Teachers’ College (2012–2016), where she built the foundational knowledge that now underpins her interdisciplinary insight. Each academic stage not only honed her technical acumen but also broadened her lens toward complex problem-solving and real-world modeling 🔭 — making her a well-rounded, resilient, and intellectually curious researcher. 🎓✨

💼 Professional Experience

Though primarily rooted in academia, Nan Liu’s professional development 🌐 reflects deep immersion in research-intensive environments. As a doctoral candidate, she actively engages in computational modeling, thermophysical analysis, and solidification dynamics — collaborating with peers and mentors in high-precision labs 🔬. Her participation in funded research under the NSFC grant has given her project management experience, proficiency in analytical tools, and exposure to multi-phase material behavior under shear flows ⚙️. While her CV does not yet reflect formal industry roles, her academic trajectory mimics a research scientist’s responsibilities: hypothesis formulation, numerical simulation, data interpretation, and scholarly dissemination 📈. She contributes to the academic community by assisting in coursework, guiding junior students, and participating in departmental research seminars. Nan Liu’s role as a scholar is more than theoretical; it is a living practice of scientific exploration and knowledge transfer. With this blend of technical depth and project involvement, she is poised for impactful contributions to science and engineering. 🧑‍🔬📊

🔬 Research Interests

Nan Liu’s research world 🌍 orbits around the intersections of mathematics, physics, and materials science — forming a triad of intellectual synergy. Her core focus is the solidification processes in metallic systems, especially the morphology of crystal nuclei during rapid phase transformations. She explores how nanosecond-scale phase formations are influenced by multidimensional shear flows, utilizing a blend of kinetic theory, dynamic systems, and thermodynamic modeling 🔥. Her background in nonlinear equations and applied mathematics enables her to investigate material behaviors through both numerical and analytical lenses 📐. Beyond materials science, she maintains a deep interest in theoretical physics and computational simulations — seeking universal patterns and predictive models within complex systems. Her vision is to bridge the gap between abstract theory and real-world materials engineering 🧩, pushing the boundaries of how we understand the microstructural evolution in advanced alloys. With curiosity and rigor, she forges knowledge at the edge of known science. 🚀

🏆 Awards and Honors

Nan Liu’s academic journey 🌟 has been highlighted by her participation in a prestigious NSFC-funded research project (Grant No. 51971031), focusing on in-situ phase formation during alloy solidification — a competitive and nationally significant initiative 💼. While explicit awards aren’t listed, being entrusted with such a cutting-edge project testifies to her scientific credibility, diligence, and intellectual promise 🧠. Her consistent academic excellence across undergraduate, graduate, and doctoral levels — in elite institutions such as USTB — reflects the high standards she has upheld throughout her career. She has also gained recognition within her research groups for problem-solving, modeling proficiency, and collaborative mindset 🤝. Whether presenting her findings in internal forums or contributing to experimental validations, Nan Liu remains a trusted and respected member of her academic community. These honors may not always be in the form of medals 🥇, but they are etched into the foundations of impactful research and scholarly trust. 🎓🔬

📚 Publications Top Note 

Title: A Particle-Based Approach for the Prediction of Grain Microstructures in Solidification Processes

Authors: Salem Mosbah, Rodrigo Gómez Vázquez, Constantin Zenz, Damien Tourret, Andreas Otto

Published: April 17, 2025

DOI: 10.48550/arXiv.2504.12858

Summary:
This study introduces a novel approach to track crystallographic solidification grain envelopes using Lagrangian particles. The model simulates competitive grain growth scenarios and transitions between columnar and equiaxed structures. It has been validated against analytical, experimental, and numerical results, and coupled with a laser-material-interaction model to simulate grain growth during laser beam welding of steel.

🧩 Conclusion

Nan Liu is not merely a scholar 📖 — she is an embodiment of cross-disciplinary excellence, threading together mathematics, physics, and materials science into a unified quest for understanding the building blocks of matter 🔍. With strong roots in theory and hands-on application, her research is both groundbreaking and relevant, contributing to material design, thermophysical modeling, and solidification dynamics. She is supported by national funding and shaped by elite mentorship — a clear sign of her standing in the academic arena 🏛️. Her trajectory suggests not just potential but a strong certainty of impact in the field of mechanics and beyond. Whether pursuing postdoctoral endeavors, teaching, or continuing in high-level research, Nan Liu is poised to become a significant contributor to science’s future. Her journey is one of precision, patience, and purposeful curiosity 🌌 — and her story is just beginning to unfold. 🌱🔮

Joshua Benjamin | Physics | Best Researcher Award

Mr. Joshua Benjamin | Physics | Best Researcher Award

Lagos Nigeria at TYDACOMM Nigeria Limited, Nigeria

benjamin, joshua olamide is a dedicated scholar and researcher passionate about space physics, ionospheric studies, and space weather. He holds a first-class degree in pure and applied physics from Ladoke Akintola University of Technology and a distinction in space physics from the African University of Science and Technology. With experience in RF network planning and optimization, teaching, and research, he combines technical expertise with strong analytical skills. Proficient in MATLAB, Microsoft Office, and data analysis tools, he is committed to innovation, leadership, and academic excellence. His research contributes to understanding ionospheric models and their impact on space weather. 🚀📡

Professional Profile

Education & Experience 🎓💼

  • [2022] MSc in Space Physics (Distinction) – African University of Science and Technology 📡
  • [2019] B.Tech in Pure and Applied Physics (First Class) – Ladoke Akintola University of Technology 🔬
  • [2023 – Present] RF Network Planning & Field Test Engineer – TYDACOMM Nigeria Limited 📶
  • [2020 – 2021] NYSC Mathematics & Economics Teacher – Jofegal International School 📚
  • [2018] Internship at Perfect Seven Solar Company – Solar System Maintenance ☀️
  • [2011 – 2012] Mathematics Teacher – Fountain of Knowledge Group of School 📏

Professional Development 📖🔍

benjamin, joshua olamide has actively participated in multiple international colloquiums and workshops related to space science, GNSS, and ionospheric studies. He has certifications in health, safety, and environment (HSE Levels 1-3) and has completed training in soft skills, entrepreneurship, and critical thinking. His involvement in research and development, coupled with hands-on experience in field testing, data collection, and RF network optimization, showcases his versatility. Passionate about academic excellence, he regularly engages in professional training, leadership roles, and mentorship programs to enhance his expertise in space physics and its applications. 🌍🛰️

Research Focus 🔬🌌

benjamin, joshua olamide specializes in ionospheric physics, space weather, and solar-terrestrial interactions. His research explores the global climatological performance of ionospheric models using Swarm satellite electron density measurements, evaluating their accuracy and implications for GNSS and communication systems. He has worked on latitudinal electron density profiles, comparing SWARM measurements with IRI models, and studying biophysics applications. His goal is to improve predictive models for space weather impacts on Earth, ensuring the safety and reliability of communication and navigation technologies. His research contributes to scientific advancements in space physics and atmospheric studies. 🌞🌍📡

Awards & Honors 🏆🎖️

  • [2022] Best Graduating Student – Institute of Space Science and Engineering 🏅
  • [2022] Best Graduating Student – Department of Space Physics 🏆
  • [2019] Akinrogun Trust Fund Award 💰
  • [2019] Best WAEC Result – New Era High School 🏅
  • [2007] One of the Best Junior WAEC Results – Greater Tomorrow College 🎓

Publication Top Notes

  1. “Investigation of the global climatologic performance of ionospheric models utilizing in-situ Swarm satellite electron density measurements”
    This paper was published in Advances in Space Research, Volume 75, Issue 5, pages 4274-4290, in 2025. The authors are:

    • D. Okoh
    • C. Cesaroni
    • J.B. Habarulema
    • Y. Migoya-Orué
    • B. Nava
    • L. Spogli
    • B. Rabiu
    • J. Benjamin

    The study offers a comprehensive investigation into the climatologic performance of three ionospheric models when compared to in-situ measurements from Swarm satellites. The models evaluated are the International Reference Ionosphere (IRI), NeQuick, and a 3-dimensional electron density model based on artificial neural network training of COSMIC satellite radio occultation measurements (3D-NN). The findings indicate that while all three models provide fairly accurate representations of the Swarm measurements, the 3D-NN model consistently performed better across various conditions.

  2. “Global Comparison of Instantaneous Electron Density Latitudinal Profiles from SWARM Satellites and IRI Model”
    This paper was published in Advances in Space Research in 2025. The authors are:

    • J.O. Benjamin
    • D.I. Okoh
    • B.A. Rabiu

    This study focuses on comparing instantaneous electron density latitudinal profiles obtained from Swarm satellites with predictions from the IRI model. The comparison aims to assess the accuracy of the IRI model in representing real-time electron density variations observed by the Swarm mission.

For full access to these publications, you may consider visiting the publisher’s website or accessing them through academic databases such as IEEE Xplore or ScienceDirect. If you are affiliated with an academic institution, you might have institutional access to these resources.

Conclusion

Benjamin, joshua olamide stands out as a promising researcher in space physics, with notable contributions to ionospheric studies, climatology models, and research-driven technological applications. His exceptional academic achievements, research output, leadership roles, and technical expertise position him as a deserving candidate for the Best Researcher Award.