Most of competitive exams test a candidate’s writing skills with the inclusion of Descriptive Questions in the form of separate test(s). These tests are mainly aimed at checking how well a student is aware of his/ her surroundings and how well he/ she can express the same. Clarity of thought is what is required to crack these exams. The Descriptive Questions cover Essay Writing, Article Writing, Making Arguments in favour or against and Opinion Expression to evaluate the aspirant’s writing ability. 121 Essays by Disha (2nd thoroughly Revised & Updated Edition) has been designed for the aspirants of UPSC Mains, various State PSCs, and other competitive exams like MBA, Bank PO etc.. The book emphasises on the importance of a cogently written essay and the art of essay writing. The book has a special coverage of India as most of competitive exams these days ask rather deeply in respect of issues pertaining to their own country. With this approach, 121 Essays aims to provide a complete roadmap for aspirants aiming to maximize their scores in such Descriptive Questions. The book contains 121 essays of varied variety covering topics of Current Affairs, Social Issues, Environment, Politics, Education, Economy, Science & Technology, International Affairs, Personalities, Sports, etc. All the essays in the book provide sufficient information and data thus providing an insight into the crux of the issues stimulating the thinking ability of the students. 121 Essays has been structured such that it incorporates all the latest and important fascinating topics pertaining to India and the world presented in a classical style. Each essay is a model essay both in respect of language and matter and has fast-flowing facts narrated in a simple and lucid language. The book for sure will prove highly beneficial to students in their academic pursuits and to those preparing for various competitive exams.

INDEX Note for Students 1. Essay Writing • 1.1 Important Tips before you start writing the essay • 1.2 18 Most Important GS Paper I Topics for IAS Mains 2019 2. GS Paper I: Indian Heritage and Culture, History and Geography of the world and Society • 2.1 Important Tips before you start writing the essay • 2.2 25 Most Important GS Paper I Topics for IAS Mains 2019 3. GS Paper II : Governance, Constitution, Polity, Social Justice and International Relation • 3.1 Important Tips before you start writing the essay • 3.2 25 Most Important GS Paper II Topics for IAS Mains 2019 4. GS Paper III : Technology, Economic Development, Bio- diversity, Environment, Security and Disaster Management • 4.1 Important Tips before you start writing the essay • 4.2 25 Most Important GS Paper III Topics for IAS Mains 2019 5. GS Paper IV : Ethics, Integrity and Aptitude • 5.1 Important Tips before you start writing the essay • 5.2 25 Most Important GS Paper IV Topics for IAS Mains 2019 6. Sample Answers to IAS Mains Questions and Essays • General Studies Paper I • General Studies Paper II • General Studies Paper III • General Studies Paper IV • Essays

The thoroughly Revised and Updated 10th edition of Disha's BESTSELLER "UPSC IAS/ IPS Prelims Topic-wise Solved Papers 1 & 2 (1995-2019)" consists of past years solved papers of the General Studies Paper 1 & 2 distributed into 8 Units and 52 Topics. The book has been empowered with Unique Inputs/ Articles by one of the Most esteemed facuties for IAS - Mrunal on 'Understanding the IAS Exam & Strategies to Crack the Prelim & Main Exam', How to Attempt the IAS Main Exam Questions?, How to write Essays for GS IV Main exam, along with Solutions to 2017-19 exams. The book provides UNSOLVED Mains Papers from 2013-18, divided topic-wise. The book also provides List of Essays divided topic-wise from 1993-2018. The strength of the book lies in the Errorless DETAILED Solutions. The book is 100% useful for both the General Studies papers (1 and 2) of the Prelims/ CSAT.

Most of competitive exams test a candidate’s writing skills with the inclusion of Descriptive Questions in the form of separate test(s). These tests are mainly aimed at checking how well a student is aware of his/ her surroundings and how well he/ she can express the same. Clarity of thought is what is required to crack these exams. The Descriptive Questions cover Essay Writing, Article Writing, Making Arguments in favour or against and Opinion Expression to evaluate the aspirant’s writing ability. 101 Essays by Disha has been designed for the aspirants of UPSC Mains, various State PSCs, and other competitive exams like MBA, Bank PO etc.. The book emphasises on the importance of a cogently written essay and the art of essay writing. The book has a special coverage of India as most of competitive exams these days ask rather deeply in respect of issues pertaining to their own country. With this approach, 101 Essays aims to provide a complete roadmap for aspirants aiming to maximize their scores in such Descriptive Questions. The book contains 101 essays of varied variety covering topics of Current Affairs, Social Issues, Environment, Politics, Education, Economy, Science & Technology, International Affairs, Personalities, Sports, etc. All the essays in the book provide sufficient information and data thus providing an insight into the crux of the issues stimulating the thinking ability of the students. 101 Essays has been structured such that it incorporates all the latest and important fascinating topics pertaining to India and the world presented in a classical style. Each essay is a model essay both in respect of language and matter and has fast-flowing facts narrated in a simple and lucid language. The book for sure will prove highly beneficial to students in their academic pursuits and to those preparing for various competitive exams.

The new RISC-V Edition of Computer Organization and Design features the RISC-V open source instruction set architecture, the first open source architecture designed to be used in modern computing environments such as cloud computing, mobile devices, and other embedded systems. With the post-PC era now upon us, Computer Organization and Design moves forward to explore this generational change with examples, exercises, and material highlighting the emergence of mobile computing and the Cloud. Updated content featuring tablet computers, Cloud infrastructure, and the x86 (cloud computing) and ARM (mobile computing devices) architectures is included. An online companion Web site provides advanced content for further study, appendices, glossary, references, and recommended reading. - Features RISC-V, the first such architecture designed to be used in modern computing environments, such as cloud computing, mobile devices, and other embedded systems - Includes relevant examples, exercises, and material highlighting the emergence of mobile computing and the cloud

An overview of the rapidly growing field of ant colony optimization that describes theoretical findings, the major algorithms, and current applications. The complex social behaviors of ants have been much studied by science, and computer scientists are now finding that these behavior patterns can provide models for solving difficult combinatorial optimization problems. The attempt to develop algorithms inspired by one aspect of ant behavior, the ability to find what computer scientists would call shortest paths, has become the field of ant colony optimization (ACO), the most successful and widely recognized algorithmic technique based on ant behavior. This book presents an overview of this rapidly growing field, from its theoretical inception to practical applications, including descriptions of many available ACO algorithms and their uses. The book first describes the translation of observed ant behavior into working optimization algorithms. The ant colony metaheuristic is then introduced and viewed in the general context of combinatorial optimization. This is followed by a detailed description and guide to all major ACO algorithms and a report on current theoretical findings. The book surveys ACO applications now in use, including routing, assignment, scheduling, subset, machine learning, and bioinformatics problems. AntNet, an ACO algorithm designed for the network routing problem, is described in detail. The authors conclude by summarizing the progress in the field and outlining future research directions. Each chapter ends with bibliographic material, bullet points setting out important ideas covered in the chapter, and exercises. Ant Colony Optimization will be of interest to academic and industry researchers, graduate students, and practitioners who wish to learn how to implement ACO algorithms.

This book has been designed by combining the goodness of the original Wren & Martin text, High School Grammar & Composition, and specialized content developed by a panel of competitive examination experts in the area of the English language. The USP is therefore adapting a classical text to the needs of the various admission and recruitment competitive examination aspirants. Its exhaustive coverage ensures that virtually no competitive examination remains untouched. Students preparing for descriptive tests such as UPSC (Compulsory English and General English Papers of Main Exams) and state PCS examinations, Judicial Services examination, Indian Forest Service examination, Statistical Services and many other examinations in which subjective papers/tests are mandatory will find this book immensely useful. The book is also a boon for those students who are preparing for objective tests such as Banking and Insurance, SSC, UPSC preliminary, Defence Services, Law entrance, Business School entrance examinations, and many other admission and recruitment examinations. A unique feature of this book is demonstration of the connectedness of the concepts and their applications visually, with the help of arrows and pointers. The aspirant will also find questions from recent examinations on virtually every page of the book. An index of examination-wise questions has been included so that the aspirant can choose the sections according to the targeted examination and focus more. Topic-wise distribution of questions in English examination papers - both descriptive and objective - will also help aspirants to undertake a very well directed test-prep program using the book.

A number of national level examinations like IAS Mains, State PCS, IES, IFS, etc. check the English language aptitude of candidates with a compulsory English language paper. This book has been designed for such examinations which assess the English language abilities in detail.The present book covering English Language in descriptive nature has been divided into four parts namely Writing Skills, Comprehension Skills, Grammar Skills & Verbal Skills.Part A has been further divide into Essay Writing, Expansion Writing, Report Writing, Precis Writing and Letter Writing. The Verbal Skills section covers Paronyms & Homonyms, One Word Substitutions, Synonyms & Antonyms, Phrasel Verbs, etc. whereas the Grammar Skills section covers The Function of Tenses, Voice, Narration, Synthesis, Prepositions, etc. Each chapter in the book contains detailed theory including a number of sample examples in a simple & easier way to understand the topics well. Workbook Exercises have been provided in between the chapters for Part B, C & D to help aspirants practice the concepts discussed in each chapter. Answers for all the questions have been given at the end of the section. As the book covers varied aspects of English language, it for sure will help aspirants score high in the upcoming national and state level competitive and recruitment examinations.