Author: Nikhil Abraham
Publisher: John Wiley & Sons
ISBN: 1119363039
Category : Computers
Languages : en
Pages : 797
Book Description
See all the things coding can accomplish The demand for people with coding know-how exceeds the number of people who understand the languages that power technology. Coding All-in-One For Dummies gives you an ideal place to start when you're ready to add this valuable asset to your professional repertoire. Whether you need to learn how coding works to build a web page or an application or see how coding drives the data revolution, this resource introduces the languages and processes you'll need to know. Peek inside to quickly learn the basics of simple web languages, then move on to start thinking like a professional coder and using languages that power big applications. Take a look inside for the steps to get started with updating a website, creating the next great mobile app, or exploring the world of data science. Whether you're looking for a complete beginner's guide or a trusted resource for when you encounter problems with coding, there's something for you! Create code for the web Get the tools to create a mobile app Discover languages that power data science See the future of coding with machine learning tools With the demand for skilled coders at an all-time high, Coding All-in-One For Dummies is here to propel coding newbies to the ranks of professional programmers.
Coding All-in-One For Dummies
Author: Nikhil Abraham
Publisher: John Wiley & Sons
ISBN: 1119363039
Category : Computers
Languages : en
Pages : 797
Book Description
See all the things coding can accomplish The demand for people with coding know-how exceeds the number of people who understand the languages that power technology. Coding All-in-One For Dummies gives you an ideal place to start when you're ready to add this valuable asset to your professional repertoire. Whether you need to learn how coding works to build a web page or an application or see how coding drives the data revolution, this resource introduces the languages and processes you'll need to know. Peek inside to quickly learn the basics of simple web languages, then move on to start thinking like a professional coder and using languages that power big applications. Take a look inside for the steps to get started with updating a website, creating the next great mobile app, or exploring the world of data science. Whether you're looking for a complete beginner's guide or a trusted resource for when you encounter problems with coding, there's something for you! Create code for the web Get the tools to create a mobile app Discover languages that power data science See the future of coding with machine learning tools With the demand for skilled coders at an all-time high, Coding All-in-One For Dummies is here to propel coding newbies to the ranks of professional programmers.
Publisher: John Wiley & Sons
ISBN: 1119363039
Category : Computers
Languages : en
Pages : 797
Book Description
See all the things coding can accomplish The demand for people with coding know-how exceeds the number of people who understand the languages that power technology. Coding All-in-One For Dummies gives you an ideal place to start when you're ready to add this valuable asset to your professional repertoire. Whether you need to learn how coding works to build a web page or an application or see how coding drives the data revolution, this resource introduces the languages and processes you'll need to know. Peek inside to quickly learn the basics of simple web languages, then move on to start thinking like a professional coder and using languages that power big applications. Take a look inside for the steps to get started with updating a website, creating the next great mobile app, or exploring the world of data science. Whether you're looking for a complete beginner's guide or a trusted resource for when you encounter problems with coding, there's something for you! Create code for the web Get the tools to create a mobile app Discover languages that power data science See the future of coding with machine learning tools With the demand for skilled coders at an all-time high, Coding All-in-One For Dummies is here to propel coding newbies to the ranks of professional programmers.
R for Marketing Research and Analytics
Author: Chris Chapman
Publisher: Springer
ISBN: 9783319144351
Category : Business & Economics
Languages : en
Pages : 0
Book Description
This book is a complete introduction to the power of R for marketing research practitioners. The text describes statistical models from a conceptual point of view with a minimal amount of mathematics, presuming only an introductory knowledge of statistics. Hands-on chapters accelerate the learning curve by asking readers to interact with R from the beginning. Core topics include the R language, basic statistics, linear modeling, and data visualization, which is presented throughout as an integral part of analysis. Later chapters cover more advanced topics yet are intended to be approachable for all analysts. These sections examine logistic regression, customer segmentation, hierarchical linear modeling, market basket analysis, structural equation modeling, and conjoint analysis in R. The text uniquely presents Bayesian models with a minimally complex approach, demonstrating and explaining Bayesian methods alongside traditional analyses for analysis of variance, linear models, and metric and choice-based conjoint analysis. With its emphasis on data visualization, model assessment, and development of statistical intuition, this book provides guidance for any analyst looking to develop or improve skills in R for marketing applications.
Publisher: Springer
ISBN: 9783319144351
Category : Business & Economics
Languages : en
Pages : 0
Book Description
This book is a complete introduction to the power of R for marketing research practitioners. The text describes statistical models from a conceptual point of view with a minimal amount of mathematics, presuming only an introductory knowledge of statistics. Hands-on chapters accelerate the learning curve by asking readers to interact with R from the beginning. Core topics include the R language, basic statistics, linear modeling, and data visualization, which is presented throughout as an integral part of analysis. Later chapters cover more advanced topics yet are intended to be approachable for all analysts. These sections examine logistic regression, customer segmentation, hierarchical linear modeling, market basket analysis, structural equation modeling, and conjoint analysis in R. The text uniquely presents Bayesian models with a minimally complex approach, demonstrating and explaining Bayesian methods alongside traditional analyses for analysis of variance, linear models, and metric and choice-based conjoint analysis. With its emphasis on data visualization, model assessment, and development of statistical intuition, this book provides guidance for any analyst looking to develop or improve skills in R for marketing applications.
The Dreamt Land
Author: Mark Arax
Publisher: Vintage
ISBN: 1101875216
Category : Nature
Languages : en
Pages : 577
Book Description
A vivid, searching journey into California's capture of water and soil—the epic story of a people's defiance of nature and the wonders, and ruin, it has wrought Mark Arax is from a family of Central Valley farmers, a writer with deep ties to the land who has watched the battles over water intensify even as California lurches from drought to flood and back again. In The Dreamt Land, he travels the state to explore the one-of-a-kind distribution system, built in the 1940s, '50s and '60s, that is straining to keep up with California's relentless growth. The Dreamt Land weaves reportage, history and memoir to confront the "Golden State" myth in riveting fashion. No other chronicler of the West has so deeply delved into the empires of agriculture that drink so much of the water. The nation's biggest farmers—the nut king, grape king and citrus queen—tell their story here for the first time. Arax, the native son, is persistent and tough as he treks from desert to delta, mountain to valley. What he finds is hard earned, awe-inspiring, tragic and revelatory. In the end, his compassion for the land becomes an elegy to the dream that created California and now threatens to undo it.
Publisher: Vintage
ISBN: 1101875216
Category : Nature
Languages : en
Pages : 577
Book Description
A vivid, searching journey into California's capture of water and soil—the epic story of a people's defiance of nature and the wonders, and ruin, it has wrought Mark Arax is from a family of Central Valley farmers, a writer with deep ties to the land who has watched the battles over water intensify even as California lurches from drought to flood and back again. In The Dreamt Land, he travels the state to explore the one-of-a-kind distribution system, built in the 1940s, '50s and '60s, that is straining to keep up with California's relentless growth. The Dreamt Land weaves reportage, history and memoir to confront the "Golden State" myth in riveting fashion. No other chronicler of the West has so deeply delved into the empires of agriculture that drink so much of the water. The nation's biggest farmers—the nut king, grape king and citrus queen—tell their story here for the first time. Arax, the native son, is persistent and tough as he treks from desert to delta, mountain to valley. What he finds is hard earned, awe-inspiring, tragic and revelatory. In the end, his compassion for the land becomes an elegy to the dream that created California and now threatens to undo it.
Undrowned
Author: Alexis Pauline Gumbs
Publisher: AK Press
ISBN: 1849353980
Category : Social Science
Languages : en
Pages : 123
Book Description
Undrowned is a book-length meditation for social movements and our whole species based on the subversive and transformative guidance of marine mammals. Our aquatic cousins are queer, fierce, protective of each other, complex, shaped by conflict, and struggling to survive the extractive and militarized conditions our species has imposed on the ocean. Gumbs employs a brilliant mix of poetic sensibility and naturalist observation to show what they might teach us, producing not a specific agenda but an unfolding space for wondering and questioning. From the relationship between the endangered North Atlantic Right Whale and Gumbs’s Shinnecock and enslaved ancestors to the ways echolocation changes our understandings of “vision” and visionary action, this is a masterful use of metaphor and natural models in the service of social justice.
Publisher: AK Press
ISBN: 1849353980
Category : Social Science
Languages : en
Pages : 123
Book Description
Undrowned is a book-length meditation for social movements and our whole species based on the subversive and transformative guidance of marine mammals. Our aquatic cousins are queer, fierce, protective of each other, complex, shaped by conflict, and struggling to survive the extractive and militarized conditions our species has imposed on the ocean. Gumbs employs a brilliant mix of poetic sensibility and naturalist observation to show what they might teach us, producing not a specific agenda but an unfolding space for wondering and questioning. From the relationship between the endangered North Atlantic Right Whale and Gumbs’s Shinnecock and enslaved ancestors to the ways echolocation changes our understandings of “vision” and visionary action, this is a masterful use of metaphor and natural models in the service of social justice.
Building Interactive Queries with LINQPad
Author: Sebastien Finot
Publisher: Packt Pub Limited
ISBN: 9781782178224
Category : Computers
Languages : en
Pages : 126
Book Description
A step-by-step practical guide that will introduce you to LINQPad's key features, thereby helping you to query databases interactively.This book is aimed at C#/.Net developers who wish to learn LINQ programming and leverage the easy way of using LINQPad. No prior knowledge of LINQ or LINQPad is expected. A basic knowledge of SQL and XML is required for some chapters.
Publisher: Packt Pub Limited
ISBN: 9781782178224
Category : Computers
Languages : en
Pages : 126
Book Description
A step-by-step practical guide that will introduce you to LINQPad's key features, thereby helping you to query databases interactively.This book is aimed at C#/.Net developers who wish to learn LINQ programming and leverage the easy way of using LINQPad. No prior knowledge of LINQ or LINQPad is expected. A basic knowledge of SQL and XML is required for some chapters.
Create Your Own Web Site
Author: Mark Neely
Publisher:
ISBN: 9781873668429
Category : HTML (Document markup language)
Languages : en
Pages : 0
Book Description
Publisher:
ISBN: 9781873668429
Category : HTML (Document markup language)
Languages : en
Pages : 0
Book Description
Learning IPython for Interactive Computing and Data Visualization
Author: Cyrille Rossant
Publisher: Packt Publishing Ltd
ISBN: 1783986999
Category : Computers
Languages : en
Pages : 201
Book Description
Get started with Python for data analysis and numerical computing in the Jupyter notebook About This Book Learn the basics of Python in the Jupyter Notebook Analyze and visualize data with pandas, NumPy, matplotlib, and seaborn Perform highly-efficient numerical computations with Numba, Cython, and ipyparallel Who This Book Is For This book targets students, teachers, researchers, engineers, analysts, journalists, hobbyists, and all data enthusiasts who are interested in analyzing and visualizing real-world datasets. If you are new to programming and data analysis, this book is exactly for you. If you're already familiar with another language or analysis software, you will also appreciate this introduction to the Python data analysis platform. Finally, there are more technical topics for advanced readers. No prior experience is required; this book contains everything you need to know. What You Will Learn Install Anaconda and code in Python in the Jupyter Notebook Load and explore datasets interactively Perform complex data manipulations effectively with pandas Create engaging data visualizations with matplotlib and seaborn Simulate mathematical models with NumPy Visualize and process images interactively in the Jupyter Notebook with scikit-image Accelerate your code with Numba, Cython, and IPython.parallel Extend the Notebook interface with HTML, JavaScript, and D3 In Detail Python is a user-friendly and powerful programming language. IPython offers a convenient interface to the language and its analysis libraries, while the Jupyter Notebook is a rich environment well-adapted to data science and visualization. Together, these open source tools are widely used by beginners and experts around the world, and in a huge variety of fields and endeavors. This book is a beginner-friendly guide to the Python data analysis platform. After an introduction to the Python language, IPython, and the Jupyter Notebook, you will learn how to analyze and visualize data on real-world examples, how to create graphical user interfaces for image processing in the Notebook, and how to perform fast numerical computations for scientific simulations with NumPy, Numba, Cython, and ipyparallel. By the end of this book, you will be able to perform in-depth analyses of all sorts of data. Style and approach This is a hands-on beginner-friendly guide to analyze and visualize data on real-world examples with Python and the Jupyter Notebook.
Publisher: Packt Publishing Ltd
ISBN: 1783986999
Category : Computers
Languages : en
Pages : 201
Book Description
Get started with Python for data analysis and numerical computing in the Jupyter notebook About This Book Learn the basics of Python in the Jupyter Notebook Analyze and visualize data with pandas, NumPy, matplotlib, and seaborn Perform highly-efficient numerical computations with Numba, Cython, and ipyparallel Who This Book Is For This book targets students, teachers, researchers, engineers, analysts, journalists, hobbyists, and all data enthusiasts who are interested in analyzing and visualizing real-world datasets. If you are new to programming and data analysis, this book is exactly for you. If you're already familiar with another language or analysis software, you will also appreciate this introduction to the Python data analysis platform. Finally, there are more technical topics for advanced readers. No prior experience is required; this book contains everything you need to know. What You Will Learn Install Anaconda and code in Python in the Jupyter Notebook Load and explore datasets interactively Perform complex data manipulations effectively with pandas Create engaging data visualizations with matplotlib and seaborn Simulate mathematical models with NumPy Visualize and process images interactively in the Jupyter Notebook with scikit-image Accelerate your code with Numba, Cython, and IPython.parallel Extend the Notebook interface with HTML, JavaScript, and D3 In Detail Python is a user-friendly and powerful programming language. IPython offers a convenient interface to the language and its analysis libraries, while the Jupyter Notebook is a rich environment well-adapted to data science and visualization. Together, these open source tools are widely used by beginners and experts around the world, and in a huge variety of fields and endeavors. This book is a beginner-friendly guide to the Python data analysis platform. After an introduction to the Python language, IPython, and the Jupyter Notebook, you will learn how to analyze and visualize data on real-world examples, how to create graphical user interfaces for image processing in the Notebook, and how to perform fast numerical computations for scientific simulations with NumPy, Numba, Cython, and ipyparallel. By the end of this book, you will be able to perform in-depth analyses of all sorts of data. Style and approach This is a hands-on beginner-friendly guide to analyze and visualize data on real-world examples with Python and the Jupyter Notebook.
Markets, Games, and Strategic Behavior
Author: Charles A. Holt
Publisher: Princeton University Press
ISBN: 0691188971
Category : Business & Economics
Languages : en
Pages : 696
Book Description
From a pioneer in experimental economics, an expanded and updated edition of a textbook that brings economic experiments into the classroom Economics is rapidly becoming a more experimental science, and the best way to convey insights from this research is to engage students in classroom simulations that motivate subsequent discussions and reading. In this expanded and updated second edition of Markets, Games, and Strategic Behavior, Charles Holt, one of the leaders in experimental economics, provides an unparalleled introduction to the study of economic behavior, organized around risky decisions, games of strategy, and economic markets that can be simulated in class. Each chapter is based on a key experiment, presented with accessible examples and just enough theory. Featuring innovative applications from the lab and the field, the book introduces new research on a wide range of topics. Core chapters provide an introduction to the experimental analysis of markets and strategic decisions made in the shadow of risk or conflict. Instructors can then pick and choose among topics focused on bargaining, game theory, social preferences, industrial organization, public choice and voting, asset market bubbles, and auctions. Based on decades of teaching experience, this is the perfect book for any undergraduate course in experimental economics or behavioral game theory. New material on topics such as matching, belief elicitation, repeated games, prospect theory, probabilistic choice, macro experiments, and statistical analysis Participatory experiments that connect behavioral theory and laboratory research Largely self-contained chapters that can each be covered in a single class Guidance for instructors on setting up classroom experiments, with either hand-run procedures or free online software End-of-chapter problems, including some conceptual-design questions, with hints or partial solutions provided
Publisher: Princeton University Press
ISBN: 0691188971
Category : Business & Economics
Languages : en
Pages : 696
Book Description
From a pioneer in experimental economics, an expanded and updated edition of a textbook that brings economic experiments into the classroom Economics is rapidly becoming a more experimental science, and the best way to convey insights from this research is to engage students in classroom simulations that motivate subsequent discussions and reading. In this expanded and updated second edition of Markets, Games, and Strategic Behavior, Charles Holt, one of the leaders in experimental economics, provides an unparalleled introduction to the study of economic behavior, organized around risky decisions, games of strategy, and economic markets that can be simulated in class. Each chapter is based on a key experiment, presented with accessible examples and just enough theory. Featuring innovative applications from the lab and the field, the book introduces new research on a wide range of topics. Core chapters provide an introduction to the experimental analysis of markets and strategic decisions made in the shadow of risk or conflict. Instructors can then pick and choose among topics focused on bargaining, game theory, social preferences, industrial organization, public choice and voting, asset market bubbles, and auctions. Based on decades of teaching experience, this is the perfect book for any undergraduate course in experimental economics or behavioral game theory. New material on topics such as matching, belief elicitation, repeated games, prospect theory, probabilistic choice, macro experiments, and statistical analysis Participatory experiments that connect behavioral theory and laboratory research Largely self-contained chapters that can each be covered in a single class Guidance for instructors on setting up classroom experiments, with either hand-run procedures or free online software End-of-chapter problems, including some conceptual-design questions, with hints or partial solutions provided
The Tiny Mess
Author: Maddie Gordon
Publisher: Ten Speed Press
ISBN: 0399582746
Category : House & Home
Languages : en
Pages : 194
Book Description
A lushly photographed cookbook featuring more than 40 recipes from tiny kitchens, The Tiny Mess is a whimsical combination of stories, recipes, culinary adventure, and of course, petite and inspiring cooking spaces that prove constraints are nothing but an invitation for creativity. From sailboats and trailers, to treehouses, cottages, and converted railcars, The Tiny Mess is alive with stories of tiny houses, the people who live in them, and the meals they love the most. The book offers full-flavored recipes for kitchens of any size, featuring gorgeous photographs of intimate kitchens; the fresh, colorful food they produce; and the artisans, cooks, anglers, and farmers who own and work in them. A range of inventive dishes includes options for breakfast, lunch, dinner, and even cocktail hour, such as Sourdough Pancakes, Kitchen Sink Quiche, Nopal Cactus Salad, Slow-Stewed Rabbit Tacos, Blueberry and Lime Pie, and Rosemary-Honey Gin and Tonic. In addition to the recipes, the book includes narratives about the contributors, including their tips and tricks for essential equipment, pantry items, and small kitchen hacks.
Publisher: Ten Speed Press
ISBN: 0399582746
Category : House & Home
Languages : en
Pages : 194
Book Description
A lushly photographed cookbook featuring more than 40 recipes from tiny kitchens, The Tiny Mess is a whimsical combination of stories, recipes, culinary adventure, and of course, petite and inspiring cooking spaces that prove constraints are nothing but an invitation for creativity. From sailboats and trailers, to treehouses, cottages, and converted railcars, The Tiny Mess is alive with stories of tiny houses, the people who live in them, and the meals they love the most. The book offers full-flavored recipes for kitchens of any size, featuring gorgeous photographs of intimate kitchens; the fresh, colorful food they produce; and the artisans, cooks, anglers, and farmers who own and work in them. A range of inventive dishes includes options for breakfast, lunch, dinner, and even cocktail hour, such as Sourdough Pancakes, Kitchen Sink Quiche, Nopal Cactus Salad, Slow-Stewed Rabbit Tacos, Blueberry and Lime Pie, and Rosemary-Honey Gin and Tonic. In addition to the recipes, the book includes narratives about the contributors, including their tips and tricks for essential equipment, pantry items, and small kitchen hacks.
Big Dot Grid Notebook (Burlywood)
Author: Vismont Studios
Publisher:
ISBN:
Category :
Languages : en
Pages : 510
Book Description
Are you searching for an 500 Pages, Dot Grid Paper Notebook with a Solid / Single-Colored Cover? Look no further! This Giant / Big Dot Grid Paper Notebook with 500 pages is a multi-purpose Dot Grid Paper Notebook for writing, doodling, planning, journaling, note taking and keeping track of your ideas, plans, doodles, notes, thoughts, etc. It is perfect for school students and both girls and boys will love it. Also, both women and men will find this large Dot Grid notebook very useful at office. Why You Will Love This "Giant Dot Grid Paper Notebook": Unique Design - Beautiful design for aesthetic pleasure. Jumbo / Huge / Large / Big / Giant Paper Notebook Size - 8.5 x 11 inches. Dot Grid Paper - This format promotes lots of space for writing, doodling, journaling, note taking, etc. and can be used by students, working professionals at school, office, etc. Lots Of Pages - 500 white pages (250 sheets) ensure that you get more pages than a regular Dot Grid Notebook. Non-Perforated and Dual-Sided - Pages are non-perforated and dual-sided, so you can use both sides of the page. Sturdy Matte Softbound Durable Cover - Protects your notes and keeps paper clean and dry. Perfect for Students, Professionals & Individuals - This 500-page big Dot Grid paper notebook can be used by students for planning, drawing, playing paper games, etc. That makes it the perfect Giant Dot Grid notebook for school / classroom. You can use it at your office for jotting down ideas, writing lists and brain storming, thus making it the perfect Jumbo Dot Grid notebook for office. You can even use it at home for homeschooling, casual note taking, organizing, journaling, etc. Suitable For - Kids, Teens, Adults - Girls, Boys, Women, Men. Gifting - Cool Dot Grid Notebook Gift for girls, boys, women, men, students, etc. Occasional Gifting - Beautiful Dot Grid Paper Notebook Gift for occasions such as Birthday, Christmas, Valentine's Day, Mother's Day, Father's Day, Easter, Thanksgiving, New Year, etc. Made In USA - Designed with love and made in USA. Technical Specifications: Layout - Dot Grid Paper (Dots are 0.2 inches apart) Size - 8.5 x 11 inches Pages - 500 pages (250 Sheets) Paper - White color Cover - Soft, Matte paperback cover Perfect For Use With - Pens, Pencils, etc. Avail all the benefits listed above quickly and easily, by ordering your own copy of this "500 Pages Giant-Sized Dot Grid Notebook" now! You can also explore other colors and designs for this book in two ways. 1) Click on the Series link just below the Author Name towards the top of this page. 2) Search for the following phrase in the search bar of Amazon.com: Vismont Studios Dot-Grid-Solid-500
Publisher:
ISBN:
Category :
Languages : en
Pages : 510
Book Description
Are you searching for an 500 Pages, Dot Grid Paper Notebook with a Solid / Single-Colored Cover? Look no further! This Giant / Big Dot Grid Paper Notebook with 500 pages is a multi-purpose Dot Grid Paper Notebook for writing, doodling, planning, journaling, note taking and keeping track of your ideas, plans, doodles, notes, thoughts, etc. It is perfect for school students and both girls and boys will love it. Also, both women and men will find this large Dot Grid notebook very useful at office. Why You Will Love This "Giant Dot Grid Paper Notebook": Unique Design - Beautiful design for aesthetic pleasure. Jumbo / Huge / Large / Big / Giant Paper Notebook Size - 8.5 x 11 inches. Dot Grid Paper - This format promotes lots of space for writing, doodling, journaling, note taking, etc. and can be used by students, working professionals at school, office, etc. Lots Of Pages - 500 white pages (250 sheets) ensure that you get more pages than a regular Dot Grid Notebook. Non-Perforated and Dual-Sided - Pages are non-perforated and dual-sided, so you can use both sides of the page. Sturdy Matte Softbound Durable Cover - Protects your notes and keeps paper clean and dry. Perfect for Students, Professionals & Individuals - This 500-page big Dot Grid paper notebook can be used by students for planning, drawing, playing paper games, etc. That makes it the perfect Giant Dot Grid notebook for school / classroom. You can use it at your office for jotting down ideas, writing lists and brain storming, thus making it the perfect Jumbo Dot Grid notebook for office. You can even use it at home for homeschooling, casual note taking, organizing, journaling, etc. Suitable For - Kids, Teens, Adults - Girls, Boys, Women, Men. Gifting - Cool Dot Grid Notebook Gift for girls, boys, women, men, students, etc. Occasional Gifting - Beautiful Dot Grid Paper Notebook Gift for occasions such as Birthday, Christmas, Valentine's Day, Mother's Day, Father's Day, Easter, Thanksgiving, New Year, etc. Made In USA - Designed with love and made in USA. Technical Specifications: Layout - Dot Grid Paper (Dots are 0.2 inches apart) Size - 8.5 x 11 inches Pages - 500 pages (250 Sheets) Paper - White color Cover - Soft, Matte paperback cover Perfect For Use With - Pens, Pencils, etc. Avail all the benefits listed above quickly and easily, by ordering your own copy of this "500 Pages Giant-Sized Dot Grid Notebook" now! You can also explore other colors and designs for this book in two ways. 1) Click on the Series link just below the Author Name towards the top of this page. 2) Search for the following phrase in the search bar of Amazon.com: Vismont Studios Dot-Grid-Solid-500