Volodymyr Tychkov | Experimental Design | Best Researcher Award

Published on 13/10/2025 by Research Hypothesis

Assoc. Prof. Dr. Volodymyr Tychkov | Experimental Design | Best Researcher Award

Assoc. Prof. Dr. Volodymyr Tychkov | Experimental Design | Best Researcher Award | Associate Professor | Cherkasy State Technological University | Ukraine

Assoc. Prof. Dr. Volodymyr Tychkov is a researcher from Cherkasy State Technological University whose work lies at the intersection of instrumentation, mechatronics, non‐destructive testing, mathematical modelling, and optimization. He holds a Ph.D. (Technical Sciences) from Cherkasy State Technological University, awarded in 2017, and since then has built a strong professional profile: serving as Associate Professor in the Department of Instrumentation, Mechatronics and Computerized Technologies, Deputy Head of Faculty for Research, Full Academic of the Ukrainian Academy of Engineering Sciences, and active member of the Ukrainian Society for Non-Destructive Testing. His research interest centers on designing eddy current probes and excitation systems, surrogate models, active (meta)heuristic optimization, electromagnetic field modelling, and analytical instrumentation with applications in materials diagnostics and industrial process control. He has developed strong research skills in mathematical and computational modelling, electromagnetic probe synthesis, machine learning / surrogate modelling, signal‐noise suppression, and techniques for fast, accurate evaluation of material properties via non-destructive testing (including multifrequency and moving probe systems). Among his awards and honors are his election as a Full Academic in 2023 to the Ukrainian Academy of Engineering Sciences and other recognitions in his field for contributions to non-destructive testing; he has co-authored nearly 290 publications, showing strong citation and indexing via Scopus and related databases. In summary, Assoc. Prof. Dr. Volodymyr Tychkov has demonstrated consistent academic excellence, leadership in research, interdisciplinary collaboration, high productivity, and innovation in measurement technologies, making him a key contributor to instrumentation and diagnostics; his work promises continued impact in developing advanced non-destructive testing tools, optimization methods, and educational leadership in Ukraine and internationally.

Profile: Google scholar | Scopus | ORCID

Featured Publications

Halchenko, V. Y., Trembovetska, R. V., & Tychkov, V. V. (2021). Surrogate synthesis of excitation systems for frame tangential eddy current probes. Archives of Electrical Engineering, 70(4), 743-757.
Halchenko, V. Y., Trembovetska, R. V., & Tychkov, V. V. (2021). Surrogate synthesis of frame eddy current probes with uniform sensitivity in the testing zone. Metrology and Measurement Systems, 28(3), 551-564.
Trembovetska, R. V., Halchenko, V. Y., & Tychkov, V. V. (2018). Studying the computational resource demands of mathematical models for moving surface eddy current probes for synthesis problems. Eastern-European Journal of Enterprise Technologies, 5(5 (95)), 39-46.
Halchenko, V., Trembovetska, R., Bazilo, C., & others. (2023). Computer Simulation of the Process of Profiles Measuring of Objects Electrophysical Parameters by Surface Eddy Current Probes. In Information Technology for Education, Science, and Technics (ITEST 2022) (Lecture Notes on Data Engineering and Communications Technologies, Vol. 178), 411-424.
Halchenko, V. Y., Trembovetska, R. V., & Tychkov, V. V. (2020). Surface Eddy Current Probes: Excitation Systems of the Optimal Electromagnetic Field (Review). Devices and Methods of Measurements, 11(2), 91-104.

Mengge Li | Experimental Design | Best Researcher Award

Published on 24/09/202524/09/2025 by Research Hypothesis

Ms. Mengge Li | Experimental Design | Best Researcher Award

PhD candidate | Shenyang Jianzhu University | China

Ms. Mengge Li is an accomplished and dedicated early-career researcher in civil engineering with a deep passion for advancing structural engineering design and resilience research through cutting-edge methodologies and collaborative academic endeavors. She graduated with a bachelor’s degree in civil engineering from Shenyang Jianzhu University and continued her academic journey with a master’s degree in civil engineering from the same institution, where she achieved excellent academic standing and was awarded multiple scholarships for her outstanding performance. Currently, she is pursuing her Ph.D. in civil engineering at Shenyang Jianzhu University, focusing on the testing, simulation, and design of square concrete-filled steel tubular beam-columns internally reinforced with I-section CFRP profiles under cyclic loading. Her research explores seismic performance, hysteretic behavior, and restoring force models of concrete-filled steel tubular members with CFRP reinforcement, aiming to improve safety and efficiency in structural engineering applications. Ms. Mengge Li has authored 3 documents, 2 Citations, 1 h-index, which have been published in reputed sources such as Engineering Structure (Q1), Journal of Building Structures, and proceedings of the 15th International Conference on Fibre-Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-15) & the 8th Asia-Pacific Conference on FRP in Structures (APFIS-2022). Her professional experience includes extensive involvement in experimental testing, finite element modeling, and structural simulation, showcasing her ability to integrate theory with practice. She is proficient in English, holding GET-6 certification, and has strong communication skills that allow her to collaborate effectively in both domestic and international research projects. Her research interests include high-strength concrete-filled steel tubular structures, CFRP reinforcement techniques, seismic performance analysis, and finite element modeling for sustainable construction. Ms. Mengge Li possesses excellent research skills such as data analysis, simulation modeling, and experimental design, as well as advanced office and presentation software proficiency, including Word, Excel, PPT beautification, and form creation, ensuring her work is presented with clarity and precision. In recognition of her academic excellence, she has received prestigious honors such as the doctoral student admission scholarship, doctoral graduate academic scholarship, and second-class graduate scholarship (twice), along with major national awards including the National First Prize in the Second National College Students Industrialized Architecture and Smart Construction Competition and the “Zhang Jiang Guoxin An Cup” BIM Modeling Competition.

Profile: Scopus

Featured Publications

Li, M. (2022). Testing, simulation, and design of square concrete-filled steel tubular beam-columns with internal I-section CFRP profiles under cyclic loading. Engineering Structure.
Li, M. (2022). Experimental study on hysteretic behavior of concrete-filled square steel tubular members with I-section CFRP profiles with different steel ratios. Journal of Building Structures.
Li, M. (2022). Research on the restoring force model of high-strength concrete-filled high-strength square steel tubular members under pure bending. Journal of Shenyang Jianzhu University (Natural Science).
Li, M. (2022). Finite element analysis of concrete-filled square steel tubular columns internally reinforced by pultruded CFRP profile under cyclic loading. Proceedings of the 15th International Conference on FRPRCS & APFIS-2022.
Li, M. (2022). Research on seismic performance of concrete-filled square steel tubular columns with CFRP profiles. Industrial Construction.

Vahid Hassani | Experimental Design | Best Researcher Award

Published on 11/09/202511/09/2025 by Research Hypothesis

Dr. Vahid Hassani | Experimental Design | Best Researcher Award

Dr. Vahid Hassani | Experimental Design | Research Fellow | University of Southampton | United Kingdom

Dr. Vahid Hassani is a distinguished Mechanical Design Engineer and accomplished researcher, recognized for his expertise in the design and optimisation of electromechanical systems, robotics, and applied artificial intelligence in engineering design. With extensive experience in both academia and industry, he has successfully led multidisciplinary projects focused on advancing energy-efficient mechanical systems and automation solutions. His professional journey reflects a commitment to innovation, problem-solving, and the translation of complex theoretical concepts into practical, industry-ready applications. Through his work, Dr. Vahid Hassani continues to contribute to the development of next-generation engineering solutions that address critical challenges in manufacturing, transport, and sustainable energy systems.

Professional Profile

Education

Dr. Vahid Hassani earned his Ph.D. in Mechanical Engineering with a specialization in the dynamic modelling of piezoelectric actuators and precision mechanisms. His doctoral research focused on developing mathematical models to improve hysteresis characterization and enhance control accuracy in structural dynamics applications. He holds a Master’s degree in Aerospace Engineering, where he worked on designing and modelling advanced control systems using internal moving masses and dynamic neural network algorithms. He also holds a Bachelor’s degree in Aircraft Mechanical Engineering, equipping him with a strong foundation in mechanical systems and aeronautical maintenance, which laid the groundwork for his future research in mechanical system design and robotics.

Experience

Dr. Vahid Hassani has held senior research and innovation positions at leading global institutions, where he has made significant contributions to projects in compressor technology, rail vehicle energy harvesting, and predictive maintenance systems. His work includes the development of FPGA-based monitoring systems, CFD-driven performance optimisation, and additive manufacturing solutions for complex mechanical assemblies. He has collaborated with industry partners to deliver practical solutions such as 3D-printed nodal joints, ultrasonic sensor mounts, and AI-enabled delay prediction models for freight systems. Beyond research, he has taught undergraduate and postgraduate courses in mathematics, mechatronics, additive manufacturing, and control theory, playing a pivotal role in mentoring the next generation of engineers.

Research Interest

Dr. Vahid Hassani’s research interests span mechanical system design, design optimisation, robotics, and the integration of artificial intelligence for engineering applications. He is particularly focused on developing computational models and simulation tools that improve system reliability, energy efficiency, and manufacturing performance. His work in additive manufacturing and computational mechanics addresses challenges in creating lightweight, high-strength structures, while his projects in robotics and automation explore intelligent solutions for precision manufacturing. His research approach is inherently interdisciplinary, combining elements of mechanical engineering, control systems, and data-driven AI methodologies to solve real-world engineering problems.

Award

Dr. Vahid Hassani has been recognized with several awards for his contributions to research and innovation. He was a recipient of a prestigious research scholarship that supported his doctoral studies, highlighting the originality and impact of his work. He has also been awarded for his contributions to composite product development in international competitions, showcasing his ability to combine creativity and technical expertise to deliver innovative solutions. These recognitions underscore his dedication to pushing the boundaries of mechanical engineering and fostering collaboration between academia and industry.

Selected Publications

“Some of his notable publications include: “Design Optimisation of Additive Manufactured Pressure Regulators” (Published 2020, 52 Citations)”.

“Computational Modelling of Piezoelectric Actuators for Precision Control Applications” (Published 2019, 61 Citations).

“AI-Driven Predictive Maintenance for Rail Vehicle Systems” (Published 2021, 38 Citations).

“Multi-Agent Robotic Systems for Manufacturing Automation” (Published 2018, 44 Citations).

Conclusion

Dr. Vahid Hassani stands out as a leading researcher and engineer whose work bridges the gap between theoretical modelling and practical implementation. His significant contributions to mechanical system design, robotics, and applied AI have resulted in solutions that improve performance, sustainability, and reliability in critical engineering systems. His dedication to mentorship, collaboration, and continuous innovation positions him as a valuable contributor to the global engineering community. Dr. Vahid Hassani future research potential, combined with his leadership in interdisciplinary projects, makes him a highly deserving nominee for recognition in the field of engineering research and innovation.

Jincai Zhang | Experimental Design | Best Researcher Award

Published on 29/01/202529/01/2025 by Research Hypothesis

Jincai Zhang | Experimental Design | Best Researcher Award

Assoc. Prof. Dr Jincai Zhang, Shanxi University, China

Assoc. Prof. Dr. Jincai Zhang 🎓🔬 is a materials scientist specializing in industrial waste utilization and inorganic materials. He earned his Ph.D. (2012) and Master’s (2006) from the Institute of Coal Chemistry, CAS, and a Bachelor’s from Hunan University (1999). Currently an Associate Professor at Shanxi University 🏫, he was a visiting scholar at the National University of Singapore (2022-2023) 🌏. His research focuses on advanced materials, inorganic fibers, and coatings, with numerous publications in high-impact journals 📚. His work contributes to sustainable material development and environmental engineering 🌱⚙️.

Publication Profile

Scopus

Education background

Assoc. Prof. Dr. Jincai Zhang 🎓🔬 is an expert in material science with a strong academic background. He earned his Ph.D. (2009-2012) and Master’s degree (2003-2006) in Material Science from the Institute of Coal Chemistry, CAS 🏛️⚛️. His journey began with a Bachelor’s degree in Corrosion and Protection from Hunan University (1995-1999) 🏗️🛡️. With extensive research experience, Dr. Zhang has contributed significantly to material protection and coal chemistry. His expertise spans corrosion prevention, advanced materials, and industrial applications 🏭⚙️. As an Associate Professor, he continues to inspire innovation in material science, driving advancements in sustainable technologies 🌍🔎.

Experience

Assoc. Prof. Dr. Jincai Zhang is a dedicated researcher in resources and environmental engineering 🌿🔬. Since July 2015, he has been an Associate Professor at Shanxi University 🏛️. From December 2022 to December 2023, he was a visiting scholar at the National University of Singapore 🇸🇬 under Prof. Seeram Ramakrishna. Previously, he served as a Senior Engineer (2013-2015) and Assistant Researcher (2012-2013) at BGRIMM ⚙️. He also worked at the Institute of Coal Chemistry, CAS (2006-2009) and as a Technician at Zhengzhou NISSAN Automobile Co. Ltd. (1999-2003) 🚗. His expertise spans engineering, research, and industrial applications ⚡.

Research Focus

Assoc. Prof. Dr. Jincai Zhang’s research focuses on advanced materials science 🏗️, particularly in the development and modification of glass-ceramic proppants 🔬, nano calcium carbonate ⚛️, and biomass-based carbon materials 🌿. His work explores sintering additives, heating regimes, and surface modifications to enhance material properties for industrial applications 🏭. Dr. Zhang also investigates inorganic fibers derived from industrial solid wastes and their structural characteristics 🔍. His contributions extend to basalt fibers, kaolin/TiO₂ composites, and supercapacitors, highlighting his impact in energy storage ⚡ and ceramic engineering 🏺. His studies advance sustainable material utilization for modern industries 🌎.

Impact and Innovation

Assoc. Prof. Dr. Jincai Zhang’s research focus lies in sustainable materials science and industrial waste utilization. His work explores innovative ways to transform industrial by-products into valuable materials, promoting resource efficiency and environmental sustainability. Notable contributions include the development of glass-ceramic proppants, kaolin/TiO₂ composites, and inorganic fibers, combining fundamental science with industrial applications. This approach supports circular economy principles and addresses global challenges like waste management and sustainability. Dr. Zhang’s research is integral to advancing green technologies in material development and enhancing eco-friendly industrial processes. 🌍🔬♻️🧪💡

Publication Top Notes

Investigating the effects of sintering additives and heating regimes on the performances of glass–ceramic proppants derived from industrial wastes

Research progress of preparation and growth mechanism of various crystalline nanocalcium carbonate

Preparation of biomass-based carbon materials and its research progress in supercapacitors

Preparation, properties and formation mechanism of hydroxyl-silicone oil coating on the surface of kaolin/ TiO2 composites

Progress on Controllable Preparation of Polycrystalline and Polymorphic Nano Calcium Carbonate by Calcium Carbide Slag

Research Progress on Surface Modification of Basalt Fiber

Influencing Factors and Evaluation Methods of Modification Effect of Nano Calcium Carbonate

Study Progress on Inorganic Fibers from Industry Solid Wastes and the Key Factors Determining Their Characteristics

Effect of Unhydrated Aminopropyl Triethoxysilane Modification on the Properties of Calcined Kaolin

Development of electromagnetic shielding coatings

Pandiyarajan Thangaraj | Experimental Design | Best Researcher Award

Published on 18/09/202418/09/2024 by Research Hypothesis

Pandiyarajan Thangaraj | Experimental Design | Best Researcher Award

Assist Prof Dr Pandiyarajan Thangaraj, Indian Institute of Information Technology Design and Manufacturing Kurnool, India

Based on Assist. Prof. Dr. Pandiyarajan Thangaraj’s impressive academic background, research achievements, and professional contributions, he is indeed a strong candidate for a Best Researcher Award.

Publication profile

orcid

Academic Excellence

Dr. Pandiyarajan holds a Ph.D. in Physics from the prestigious National Institute of Technology, Trichy, and has a strong educational foundation in applied physics. His Ph.D. thesis focused on advanced nanostructures, reflecting his expertise in this field. With top scores in his academic pursuits, his consistent excellence showcases his dedication to learning and research.

Extensive Research Contributions

Dr. Pandiyarajan’s research spans a range of significant topics such as semiconductor nanomaterials, thin-film fabrication, and their applications in solar cells and environmental technologies. He has worked on prestigious projects, including graphene quantum dot-based hydrogen fuel production and solar cell enhancement, showcasing innovation in renewable energy and environmental sustainability. His work has resulted in numerous high-impact publications, cementing his reputation in the scientific community.

Global Collaborations

He has post-doctoral research experience in prestigious international institutions such as the University of Concepcion, Chile, and has been a visiting researcher in Mexico and Sweden. These collaborations demonstrate his active participation in global research networks, advancing knowledge through interdisciplinary efforts.

Honors and Editorial Roles

Dr. Pandiyarajan’s numerous honors, including international travel awards and editorial responsibilities, such as being a Topic Editor for Frontiers in Materials, highlight his recognized leadership in the field. His work as a reviewer for numerous high-profile journals further underscores his academic influence and expertise.

Research Grants and Leadership

His successful acquisition of multiple research grants, including a SERB-SRG project and a DRDO project, showcases his ability to secure competitive funding and lead groundbreaking research. His ongoing work in quantum dot sensitized photocathodes for hydrogen fuel production highlights his forward-thinking contributions to sustainable energy.

conclusion

Assist. Prof. Dr. Pandiyarajan Thangaraj’s academic rigor, extensive research output, international collaboration, and leadership in material science research make him a highly deserving candidate for the Best Researcher Award. His contributions not only advance scientific understanding but also offer practical solutions to global challenges.

publication top notes

Optimizing CuBi2O4 Solar Cells with PCBM Electron Transport Layer: A Comprehensive Simulation Study Achieving 32.16% Efficiency

Numerical modelling of CuBi2O4 thin film solar cells with SCAPS-1D: Bridging the gap ideal and non-ideal conditions

Graphene quantum dots as game-changers in solar cell technology: a review of synthetic processes and performance enhancement

Photo‐Alternating Current‐Electro‐Fenton Process for Pollutant Removal and Energy Usage from Industrial Wastewater: Response Surface Approach Optimization of Operational Parameters

Ajad Shrestha | Experimental Design | Innovative Research Award

Published on 16/09/202416/09/2024 by Research Hypothesis

Ajad Shrestha | Experimental Design | Innovative Research Award

Mr Ajad Shrestha, Global Engineering Associates, P., Ltd. Nepal

Publication profile

google scholar

Education

Ajad Shrestha holds a Master’s degree in Civil and Hydraulics Engineering from Tongji University (2021–2024) and a Bachelor’s degree in Civil Engineering from the Institute of Engineering, Thapathali Campus (2015–2019). His educational background has provided him with a solid foundation in structural engineering, which is critical for innovative research in this field.

Research Projects

Ajad has contributed to multiple significant research projects, such as studying the use of recycled polyethylene terephthalate (PET) in 3D printable mortar, investigating the flexural and shear performance of HS-ECC beams, and exploring autogenous shrinkage mitigation in high-strength engineered cementitious composites (HS-ECC). His ability to manage complex variables and deliver measurable results, like reducing shrinkage by 40%, showcases his technical expertise and problem-solving skills.

Work Experience

Ajad has substantial research experience as a Research Student at Tongji University, focusing on HS-ECC material and structural applications. He also worked as a Civil Engineer and Research Assistant at Global Engineering Associates, gaining hands-on experience in FEM analysis, bridge damage research, and structural calculations. This combination of academic and professional experience makes him a strong candidate for the Innovative Research Award.

Publications

Ajad’s contributions to scholarly publications are extensive, including papers on high-performance concrete, machine learning models, and advanced structural analysis. His research on the mechanical properties of cementitious composites and UHPC highlights his commitment to developing innovative, real-world solutions.

Research focus

The research focus of this individual is on advanced materials in civil engineering, particularly engineered cementitious composites and ultra-high-performance concrete (UHPC). Their work explores the mechanical and shrinkage properties of these materials, emphasizing the use of iron sand to develop high-strength cementitious composites. Additionally, they employ hybrid machine learning models to predict the mechanical properties of UHPC, validated through experiments. This interdisciplinary approach integrates material science, construction technology, and AI-driven predictive modeling to enhance the performance and sustainability of modern construction materials. 🏗️🔬💡

Awards and Scholarships

Ajad has earned the Departmental Scholarship from Tongji University, a recognition based on his academic performance and research contributions. This accolade, along with his proven track record in research, reflects his dedication and potential for future innovation.

Conclusion

Based on Ajad Shrestha’s extensive research in structural engineering, innovative use of materials like recycled PET and HS-ECC, and his solid academic background, he appears to be a highly suitable candidate for the Innovative Research Award. His demonstrated ability to solve complex problems, combined with a focus on real-world applications, makes him a promising innovator in the field of civil engineering.

Publication top notes

Development of high-strength engineered cementitious composites using iron sand: Mechanical and shrinkage properties

Hybrid machine learning model to predict the mechanical properties of ultra-high-performance concrete (UHPC) with experimental validation

Marwa Ibrahim | Experimental Design | Women Researcher Award

Published on 25/07/202425/07/2024 by Research Hypothesis

Marwa Ibrahim | Experimental Design | Women Researcher Award

Assoc Prof Dr Marwa Ibrahim, National research centre NRC, Egypt

Dr. Marwa Ibrahim is an accomplished academic and researcher in Mechanical Power Engineering with a Ph.D. from Cairo University. Her expertise includes renewable energy and smart grids, with notable work on micro-grid systems and wind turbine optimization. She is an Assistant Professor at the National Research Centre, Egypt, and has held various roles, including quality assurance and mechanical engineering positions. Dr. Ibrahim is certified in project planning, safety, and quality management. Her projects include biodiesel production and hybrid renewable energy systems. She has participated in numerous international conferences and workshops on renewable energy. 🌍🔋🌞

Publication profile

Scopus

Education

Dr.Marwa Ibrahim, earned a PhD in Mechanical Power Engineering from Cairo University in January 2018, with a focus on “Design and Performance Evaluation of Renewable Energy Based Micro-Grid Systems with Energy Storage” 🌍🔋. He holds an M.Sc. in Industrial Engineering from Fayoum University (2014), specializing in “Optimization of Small-Scale Wind Turbine Systems Considering Externalities” 🌬️⚙️, and a B.Sc. in Industrial Engineering from the same institution (2008), where his graduation project on developing an ISO\TS 16949 Quality System earned an excellent grade 🎓📈. His work centers on renewable energy and industrial optimization.

Experience

Dr. Marwa Ibrahim, is an accomplished mechanical engineer at the Mech. Eng. Department, NRC, where they have served as an Assistant Professor since 2018. Their journey began as a Researcher Assistant in 2010, evolving through roles as Assistant Researcher (2014-2017) and Mechanical Engineer (2009-2010). Before joining NRC, they honed their expertise as a Quality Assurance Engineer at ICDI Company, Egypt (2008-2009). With a robust background in research and quality assurance, Dr. Marwa Ibrahim, has made significant contributions to the field of mechanical engineering. 🛠️📊

Projects

At the National Research Centre, Egypt, He contributed to several innovative projects. As a Co-PI on the 2019-2021 project for designing and testing a continuous biodiesel production device from Egyptian Jatropha seeds, He played a key role. He was also part of the STDF project optimizing hybrid renewable systems for tourism facilities in Fayoum (2019). He involvement extended to projects like the development of a mini car running on alternative fuels (2018-2020) and hybrid energy systems for Nubariyyah (2017-2020). Additionally, He worked on designing presses for oil extraction from Jatropha (2016-2019) and exploring hydrogen fuel from solar energy (2016-2019). 🌱🔧🚗🔋🌞

Research focus

Dr. M.M. Ibrahim’s research primarily focuses on optimizing and managing renewable energy systems, particularly wind and solar energy. His work involves evaluating technical and economic aspects of these systems to enhance efficiency and sustainability. Key areas include hybrid renewable energy systems, wind off-grid applications, and comparative studies between solar and wind energy. Ibrahim also explores innovative applications such as smart energy management for solar water heating and grid-connected solar PV systems for electric vehicle charging. His studies contribute to improving renewable energy solutions, particularly in remote and urban settings. 🌬️☀️💡

EXPERIMENTAL AND THEORETICAL STUDY OF SMART ENERGY MANAGEMENT SOLAR WATER HEATING SYSTEM FOR OUTDOOR SWIMMING POOL APPLICATION IN EGYPT

Investigation of a grid-connected solar pv system for the electric-vehicle charging station of an office building using pvsol software

Sustainable technical design and economic–environmental analysis of SMART solar street lighting system in Giza City, Egypt

NUMERICAL THERMAL STUDY OF HEAT TRANSFER ENHANCEMENT IN LAMINAR-TURBULENT TRANSITION FLOW THROUGH ABSORBER PIPE OF PARABOLIC SOLAR TROUGH COLLECTOR SYSTEM

Feasibility and performance analysis of grid-tied solar photovoltaic systems using pvsyst simulation package of pharmaceutical factory case study in Egypt