Understanding how to turn numbers into usable insights is a significant challenge for those who work with data on a daily basis. Thinking with Data provides a concise framework and key insights to help data people uncover the real problem to be solved as well as how to approach, organize, and analyze potential results. By drawing from rhetoric studies, design thinking, and his data strategy consultancy experience, author Max Shron shows you how focusing on the why will help you create usable insights from your company´s data jumble. Many analysts are too concerned with tools and techniques for cleansing, modeling, and visualizing datasets and not concerned enough with asking the right questions. In this practical guide, data strategy consultant Max Shron shows you how to put the why before the how, through an often-overlooked set of analytical skills. Thinking with Data helps you learn techniques for turning data into knowledge you can use. You?ll learn a framework for defining your project, including the data you want to collect, and how you intend to approach, organize, and analyze the results. You?ll also learn patterns of reasoning that will help you unveil the real problem that needs to be solved. * Learn a framework for scoping data projects * Understand how to pin down the details of an idea, receive feedback, and begin prototyping * Use the tools of arguments to ask good questions, build projects in stages, and communicate results * Explore data-specific patterns of reasoning and learn how to build more useful arguments * Delve into causal reasoning and learn how it permeates data work * Put everything together, using extended examples to see the method of full problem thinking in action
SysML extends UML with powerful systems engineering capabilities for modeling a far wider spectrum of systems, and effectively capturing all aspects of a system?s design. Now, there?s a go-to reference for everyone who wants to start creating accurate and useful system models with SysML. Drawing on his pioneering experience creating models for Lockheed Martin and NASA, Lenny Delligatti illuminates SysML?s core components, and shows how to use them even under tight deadlines and other constraints. You needn?t know all of SysML to create effective models: SysML Distilled quickly teaches what you do need to know, and helps you deepen your knowledge incrementally as the need arises. Coverage includes: How SysML extends and improves UML, and how to immediately put it to practical use How to use SysML as a foundation for Model-Based System Engineering (MBSE) or Model-Based Engineering (MBE) What to know before you start an SysML modeling project How to use key SysML diagrams for block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages How to use allocations to define cross-cutting relationships And much more ? including appendices presenting complete SysML notation, identifying changes between SysML versions, and identifying authoritative sources for more information Product Description The Systems Modeling Language (SysML) extends UML with powerful systems engineering capabilities for modeling a wider spectrum of systems and capturing all aspects of a system?s design. SysML Distilled is the first clear, concise guide for everyone who wants to start creating effective SysML models. (Drawing on his pioneering experience at Lockheed Martin and NASA, Lenny Delligatti illuminates SysML?s core components and provides practical advice to help you create good models and good designs. Delligatti begins with an easy-to-understand overview of Model-Based Systems Engineering (MBSE) and an explanation of how SysML enables effective system specification, analysis, design, optimization, verification, and validation. Next, he shows how to use all nine types of SysML diagrams, even if you have no previous experience with modeling languages. A case study running through the text demonstrates the use of SysML in modeling a complex, real-world sociotechnical system. Modeled after Martin Fowler?s classic UML Distilled, Delligatti?s indispensable guide quickly teaches you what you need to know to get started and helps you deepen your knowledge incrementally as the need arises. Like SysML itself, the book is method independent and is designed to support whatever processes, procedures, and tools you already use. Coverage Includes Why SysML was created and the business case for using it Quickly putting SysML to practical use What to know before you start a SysML modeling project Essential concepts that apply to all SysML diagrams SysML diagram elements and relationships Diagramming block definitions, internal structures, use cases, activities, interactions, state machines, constraints, requirements, and packages Using allocations to define mappings among elements across a model SysML notation tables, version changes, and sources for more information Features + Benefits The most practical introduction to SysML Covers all essential diagrams: block definitions, internal blocks, use cases, activities, sequences, state machines, parametrics, requirements, and packages How to use SysML to move towards full-fledged Model-Based Systems Engineering (MBSE) Foreword by Rick Steiner xvii Foreword by Richard Soley xix Preface xxv Acknowledgments xxxi About the Author xxxiii Chapter 1: Overview of Model-Based Systems Engineering 1 1.1 What Is MBSE? 2 1.2 The Three Pillars of MBSE 4 1.3 The Myth of MBSE 9 Chapter 2: Overview of the Systems Modeling Language 11 2.1 What SysML Is?and Isn?t 11 2.2 Yes, SysML Is Based on UML?but You Can Start with SysML 13 2.3 SysML Diagram Overview 14 2.4 General Diagram Concepts 17 Chapter 3: Block Definition Diagrams 23 3.1 Purpose 23 3.2 When Should You Create a BDD? 24 3.3 The BDD Frame 24 3.4 Blocks 26 3.5 Associations: Another Notation for a Property 44 3.6 Generalizations 49 3.7 Dependencies 52 3.8 Actors 53 3.9 Value Types 55 3.10 Constraint Blocks 57 3.11 Comments 59 Chapter 4: Internal Block Diagrams 63 4.1 Purpose 63 4.2 When Should You Create an IBD? 64 4.3 Blocks, Revisited 64 4.4 The IBD Frame 65 4.5 BDDs and IBDs: Complementary Views of a Block 66
Foreword by Kent Beck The authors of this book have led a revolution in the craft of programming by controlling the environment in which software grows.´´ --Ward Cunningham ´´At last, a book suffused with code that exposes the deep symbiosis between TDD and OOD. This one´s a keeper.´´ --Robert C. Martin ´´If you want to be an expert in the state of the art in TDD, you need to understand the ideas in this book.´´-- Michael Feathers Test-Driven Development (TDD) is now an established technique for delivering better software faster. TDD is based on a simple idea: Write tests for your code before you write the code itself. However, this simple idea takes skill and judgment to do well. Now there´s a practical guide to TDD that takes you beyond the basic concepts. Drawing on a decade of experience building real-world systems, two TDD pioneers show how to let tests guide your development and ´´grow´´ software that is coherent, reliable, and maintainable. Steve Freeman and Nat Pryce describe the processes they use, the design principles they strive to achieve, and some of the tools that help them get the job done. Through an extended worked example, you´ll learn how TDD works at multiple levels, using tests to drive the features and the object-oriented structure of the code, and using Mock Objects to discover and then describe relationships between objects. Along the way, the book systematically addresses challenges that development teams encounter with TDD--from integrating TDD into your processes to testing your most difficult features. Coverage includes - Implementing TDD effectively: getting started, and maintaining your momentum throughout the project - Creating cleaner, more expressive, more sustainable code - Using tests to stay relentlessly focused on sustaining quality - Understanding how TDD, Mock Objects, and Object-Oriented Design come together in the context of a real software development project - Using Mock Objects to guide object-oriented designs - Succeeding where TDD is difficult: managing complex test data, and testing persistence and concurrency
Make Your Own Pixel Art is a complete, illustrated introduction to the creation of pixel art aimed at beginners just starting out right through to the experienced pixel artist wanting to enhance their skills. Hand anyone a pencil and paper and they can start drawing, but it´s just as easy to draw digitally using a keyboard and mouse. With Make Your Own Pixel Art, pixel artist Jennifer Dawe and game designer Matthew Humphries walk you step-by-step through the available tools, pixel art techniques, the importance of shapes, colors, shading, and how to turn your art into animation. By the end of the book, you´ll be creating art far beyond what´s possible on paper! Make Your Own Pixel Art will teach you about: - Creating pixel art using the most popular art software and the common tools they provide - Drawing with pixels, including sculpting, shading, texture, and color use - The basics of motion and how to animate your pixel art creations - Best practices for saving, sharing, sketching, and adding emotion to your art With a dash of creativity and the help of Make Your Own Pixel Art, your digital drawings can be brought to life, shared with the world, and form a basis for a career in art, design, or the video games industry.