Abhishek Srivastava

This book excavates into both the foundational principles and the latest advancements in perovskite solar cell research. It presents ground-breaking results about the diverse applications of perovskite solar cells, offering readers a comprehensive overview of the field's current state. By combining fundamental knowledge with cutting-edge methods, this book equips researchers, students, and professionals with valuable insights, fostering innovation and progress in the realm of perovskite solar cell technology. This volume captivates readers with a diverse array of intriguing topics. The book provides valuable insights into tackling challenges and discovering solutions, from the in-depth exploration of various electrical modeling techniques to the revelation of advanced perovskite fabrication methods. Additionally, readers will be engrossed by the exploration of efficiency improvements and the unveiling of novel applications in the realm of renewable energy. This comprehensive coverage ensures that the book appeals to researchers, engineers, and enthusiasts, inspiring them to delve deeper into the world of perovskite solar cells and contribute to sustainable energy solutions. The book also features an array of detailed illustrations and tables, facilitating a comprehensive comparison of different perovskite types. Through a didactic approach, complex concepts are presented in a reader-friendly manner, enabling researchers and enthusiasts alike to grasp cutting-edge methods, results, and applications in the field of perovskite solar cells. This book serves as a valuable resource, empowering readers to contribute to the advancement of clean energy solutions with a deeper understanding of next-generation technologies. This book offers readers a transformative opportunity to develop a comprehensive understanding of perovskite solar cells. Through its insightful exploration of fundamental principles, cutting-edge methods, and ground-breaking applications, the book equips readers with the knowledge and expertise needed to actively participate in developing next-generation clean energy solutions. This invaluable resource empowers researchers, engineers, and students to embrace the potential of perovskite solar cells, driving innovation and progress in the pursuit of a sustainable and environmentally friendly future.

Arya is a young RAW recruit, pumped up about his first assignment as reinforcement to a veteran spymaster - Virat and his team. In a mind-boggling turn of events, Arya finds himself being interrogated by the very terrorist he is after - Mir. Barely has he escaped that he learns an excruciating fact about Virat and team. They have killed undercover agents of the CIA while hunting Mir. Hunted by the ruthless CIA, he can survive only using his wit and courage. On the run, declared rogue, he fights lone battles with enemy intelligence agencies. He creates a vivid deception, not only to throw CIA off the track, but also to get the actual traitor out in the open. He eventually gets his man, but then realizes that a much more devious plan is at work, with the real mastermind attempting to blacklist RAW as revenge for their role during Bangladesh liberation war of 1971. Arya evolves into the perfect weapon, but will he be in time to save RAW and his country's repute? Or turn out to be a pawn in the game of master spies and espionage?

This book is authored with the intention of creating a quick revision guide for IIBA Business Analysis body of knowledge (BABOK) guide v3.0 for CBAP, CCBA and ECBA certification preparation exam.We have not written this guide as an alternative to BABOK v3.0. Instead it is written as a concise and summarised version of BABOK to help you in quick revision of BABOK. What's more, we have added revision exercises at the end of every chapter.So, How to use it?This book should be used once you have gone through BABOK . Going through the 500 pages again is difficult and time consuming. This book allows you to revise quickly. The book is a total of 300 pages with around 250 pages for BABOK summarised version (50% reduction) and remaining 50 pages devoted to chapter wise exercises.The guide is meant for professionals who are planning to undertake ECBA, CCBA or CBAP certification examination.This revision guide captures the key concepts, definitions, business analysis practices as mentioned in the BABOK guide. To really understand the thought process behind this revision guide, consider your university exam and the notes you used to create for every exam. This is essentially a guide comprising of important notes. For best results, this revision guide must be picked up after you have gone through the BABOK guide once. If you are planning for ECBA certification, please read it keeping in mind the knowledge areas weightages applicable for ECBA.

UML modelling is one of the widely used techniques in the software development industry. Business analysts use this technique to develop the requirements to make it suitable for the technology team and customers alike. After spending several years in the IT industry, we have realized that requirements (or incomplete or incorrect understanding of the requirements) have been one of the primary reasons for the failure of the software projects. This has been proven time & again by the CHAOS report published by Standish Group. So the motivation to write this book is to provide a comprehensive, detailed and practical guide on requirements development to enable every business analyst conduct this phase efficiently.This book deals with requirements development and its sub-phases with examples and case studies. We have selected UML diagrams as the modelling technique to explain and guide you through the entire process. Requirements development phase comprises of multiple steps comprising of: -Requirements Elicitation -Requirements analysis and modelling -Requirements specification and validation. Chapter 1 and 2 lays the foundation for the entire book. Chapter 1 provides fundamentals of software development life cycle methodology. Chapter 2 provides the basics of requirements development process in the overall context of SDLC. As the focus is on UML modelling, chapter 3 to chapter 8 deals with UML modelling. Chapter 9 deals with the requirements specifications and validation.We have presented complete requirements specification document in two formats: System Requirements specification (SRS) document. Use case specification document. We have also discussed structured analysis and design (SAD) methodology in the Appendix. We have also used two case studies, in addition to examples, to explain the concepts practically.