cengage learning inc boston ma (491 risultati)

Paperback. Condizione: new. Paperback. With the growth of film festivals, cable networks, specialty home video, and the Internet, there are more outlets and opportunities for screening short films now than at any time in the last 100 years. But before you can screen your short film, you need to shoot it. And before you can shoot it, you need to write it. The Short Screenplay provides both beginning and experienced screenwriters with all the guidance they need to write compelling, filmable short screenplays. Explore how to develop characters that an audience can identify with. How to create a narrative structure that fits a short time frame but still engages the audience. How to write dialogue that's concise and memorable. How to develop story ideas from concept through final draft. All this and much more is covered in a unique conversational style that reads more like a novel than a 'how-to' book. The book wraps up with a discussion of the role of the screenplay in the production process and with some helpful (and entertaining) sample scripts. This is the only guide you'll ever need to make your short film a reality! Provides both beginning and experienced screenwriters with all the guidance they need to write compelling, filmable short screenplays. This book helps you explore how to develop characters that an audience can identify with. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Computers have changed the way we make music. For less than a thousand dollars (including the computer!), you can have a studio in your bedroom that rivals the capabilities of million-dollar studios of not that long ago. One of the best tools at the recording musician's disposal is SONAR Home Studio, a powerful and relatively inexpensive digital audio workstation. But to truly maximize your creativity, you need more than just the program and the manual, you need guidance on how to actually use the program to make music- guidance included in this book. Making Music with SONAR Home Studio shows you how to use Home Studio as a creative tool, not just a recording program. It goes beyond the user manual to help you get started recording the right way in your home studio, then explains the how and why of using the program in easy-to-understand language. Everything from optimizing your recording setup to composing, recording, and mixing down a song is covered. Each recording scenario offers step-by-step detailed instructions and points you in the right direction for reaching your ultimate musical goals. Sonar Home Studio is one of the most successful audio software applications. This book helps Sonar Home Studio users get off on the right foot with their home studio, and explains the how and why of using the program in easy-to-understand language. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Give your students a 360-degree education and career advantage with ILLUSTRATED COURSE GUIDES: PROBLEM-SOLVING AND DECISION MAKING - SOFT SKILLS FOR A DIGITAL WORKPLACE. Part of the Illustrated Series Soft Skills, this book, like all others in the series, makes it easy to teach students the essential soft skills necessary to succeed in today's competitive workplace. Timeless information highlights marketable skills that students need for success in the technological workplace. This book addresses 40 critical skills that equip your students with extensive knowledge they can bring with them into today's real world. "Soft skills for a digital workplace"--Cover. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Give your students the teamwork skills needed for success throughout their education and career with ILLUSTRATED COURSE GUIDES: TEAMWORK AND TEAM BUILDING - SOFT SKILLS FOR A DIGITAL WORKPLACE, 2E. Part of the acclaimed ILLUSTRATED SOFT SKILLS SERIES, this book makes it easy to teach students the essential team building and other soft skills necessary to succeed in today's competitive workplace. Each book addresses 40 critical skills, providing your students with extensive knowledge they can bring with them into the real world. "Soft skills for a digital workplace"--Cover. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. The primary purpose of this book is to help you pass the Project Management Professional (PMP) exam administered by the Project Management Institute (PMI). Because the book has a laser-sharp focus on the exam objectives, expert project managers who want to pass the PMP exam can use this book to ensure that they do not miss any objective. Yet this is not simply an exam-cram book. The chapters and the sections within each chapter are presented in a logical learning sequence: A topic and a chapter only depend upon the previously covered topics and chapters, and there is no hopping from topic to topic. The concepts and topics, both simple and complex, are clearly explained when they appear for the first time. No prior knowledge of project management is assumed. This facilitates stepwise learning, prevents confusion, and makes this book useful for anyone who wants to get up to speed quickly to learn the fundamentals of project management, pass the PMP exam, or both, even if they are new to the discipline of project management. A fulllength practice exam with fully explained answers is also included. Offers comprehensive coverage of the topics included in the PMP exam. Focusing on the PMP exam objectives, this book is suitable for both the beginners and the experienced project managers. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. West's COMPTIA CLOUD+ GUIDE TO CLOUD COMPUTING, 2nd Edition, prepares you for certification exam and career success. Fully updated content maps to objectives of the CompTIA Cloud+ (CVO-003) exam, which now has less emphasis on physical host configuration and more emphasis on cloud infrastructure, management and security. Each module in the second edition is packed with enriching features such as self-check questions, group activities and capstone projects that enable you to sharpen your new skills and knowledge through real design and deployment scenarios. You also can work with three popular cloud platforms: AWS (Amazon Web Services), Microsoft Azure and GCP (Google Cloud Platform). Live virtual machine labs, auto-graded quizzes, videos and hands-on projects in the MindTap digital learning platform provide additional preparation to maximize your success on the exam and well beyond. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Praised by instructors for its concise, focused approach and user-friendly format, the Illustrated Series engages both computer rookies and hot shots in mastering Microsoft Publisher 2013 quickly and efficiently. Skills are accessible and easy-to-follow thanks to the Illustrated Series' hallmark 2-page layout, which allows students to see an entire task in one view. New Learning Outcomes outline the skills covered in each lesson, and larger full-color screens represent exactly what students should see on their own computers. Each unit begins with a brief overview of the principles of the lesson, and introduces a case study for further application. Engages both computer rookies and hot shots in mastering Microsoft Publisher 2013 quickly and efficiently. This title features skills that are accessible and easy-to-follow thanks to the Illustrated Series' hallmark 2-page layout, which allows students to see an entire task in one view. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Campbell/Ciampa/Clemens/Freund/Frydenberg/Hooper/Ruffolo/West's TECHNOLOGY FOR SUCCESS: COMPUTER CONCEPTS, 2nd Edition, teaches you to be a digital citizen by engaging you in the history, use and concepts of technology. Each module begins with a scenario that introduces how one person may use the concepts covered in the module. The modules' content are mapped to high-level learning objectives such as databases, networking, hardware, software, the web and digital communication. Each objective is further broken into digestible tasks and topics focused on how you will interact or utilize the technology. Topics covered that go beyond the nuts and bolts of technology include the digital divide, how technology is used in the professional world, applying information literacy skills to web searches, computer safety and health and the legal and ethical responsibilities of being a digital citizen. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Learning has never been easier than with ADOBE PHOTOSHOP CS6 ILLUSTRATED, International Edition. This reader-friendly book presents each skill on two facing pages, providing detailed instructions on the left-hand page and large, full-color screenshots on the right page. The visual format helps you intuitively grasp the concepts in the book and apply them to the classroom and workplace environment. Presents each skill on two facing pages, providing detailed instructions on the left-hand page and large, full-color screenshots on the right page. In this book, the visual format helps students intuitively grasp the concepts and apply them to the classroom and workplace environment. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Spiral. Condizione: new. Spiral. Loved by students like you for its visual and flexible approach to building computer skills, the ILLUSTRATED COURSE GUIDE: MICROSOFT OFFICE 365 & EXCEL 2016: INTRODUCTORY is the ideal resource for learning Microsoft Excel 2016, regardless of your experience level. Each two-page spread focuses on a single skill, making information easy to follow and absorb. The ILLUSTRATED COURSE GUIDE divides important Microsoft Excel 2016 concepts and skills into three manageable levels -- Introductory, Intermediate, and Advanced -- making it perfect for mastering the skills you need in any learning environment. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Develop the Microsoft Office and Excel 2016 skills you need to be successful in college and beyond with the emphasis on critical-thinking, problem-solving, and in-depth coverage found in NEW PERSPECTIVES MICROSOFT OFFICE 365 & EXCEL 2016: INTRODUCTORY. Updated with all-new case scenarios, this edition clearly applies the skills you are learning to real-world situations, making the concepts even more relevant. New Productivity Apps provide a visual introduction to Microsoft OneNote, Sway, Office Mix and Edge with fun, hands-on activities. Companion Sways provide videos and step-by-step instructions to help you learn to use each app. NEW PERSPECTIVES MICROSOFT OFFICE 365 & EXCEL 2016: INTRODUCTORY demonstrates the importance of what you're learning while strengthening your outcomes and helping you transfer your skills to other applications and disciplines for further success. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Portfolio Projects for Business Analysis is designed to help students practice and perfect technology skills. This companion text is ideal for students taking a variety of different courses from Communications, Marketing, and Accounting to Introduction to Business courses. Portfolio Projects for Business Analysis includes 15 projects based on real-world business scenarios, allowing students to compile a comprehensive portfolio of business analysis examples to use during the interview process. Designed to help students practice and perfect technology skills, this companion text is suitable for students taking a variety of different courses from Communications, Marketing, and Accounting to Introduction to Business courses. It also includes 15 projects based on real-world business scenarios. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Develop the Microsoft Word 2016 skills you need to be successful in college and beyond with the emphasis on critical-thinking, problem-solving, and in-depth coverage found in NEW PERSPECTIVES MICROSOFT OFFICE 365 & WORD 2016: INTRODUCTORY. Updated with all-new case scenarios, this edition clearly applies the skills you are learning to real-world situations, making the concepts even more relevant. New Productivity Apps provide a visual introduction to Microsoft OneNote, Sway, Office Mix and Edge with fun, hands-on activities. Companion Sways provide videos and step-by-step instructions to help you learn to use each app. NEW PERSPECTIVES MICROSOFT OFFICE 365 & WORD 2016: INTRODUCTORY demonstrates the importance of what you're learning while strengthening your outcomes and helping you transfer your skills to other applications and disciplines for further success. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. If you are new to programming with Microsoft Access VBA and are looking for a solid introduction, this is the book for you. Developed by computer science professors, books in the for the absolute beginner(TM) series teach the principles of programming through simple game creation. Covering Access 2007, Microsoft Access VBA Programming for the Absolute Beginner focuses on VBA programming, but also covers beginning database concepts for those who lack that cursory knowledge of relational databases and/or Microsoft Access. Topics range from beginning SQL concepts, user interface upgrades, new data types, essential programming constructs, and much more. The book not only shows you how to apply the concepts learned to real-world Access 2007 scenarios, but by the time you finish the book, you'll be able to apply the basic principles learned to the next programming language you tackle. Covering Access 2007, this book focuses on VBA programming and also covers beginning database concepts. This book covers topics ranging from beginning SQL concepts, user interface upgrades, data types, and, programming constructs. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Master today's SQL programming principles and learn how to most effectively apply your SQL skills with Shellman/Afyouni/Pratt/Last's A GUIDE TO SQL, Tenth Edition. This edition's leading approach combines straightforward instruction and extensive hands-on exercises with a strong foundation and emphasis on today's actual business applications. This edition introduces basic SQL commands in the context of an intriguing, ongoing case in which a business uses SQL to manage orders, items, customers and sales reps. This edition emphasizes how to apply fundamental principles and strengthen your programming practices, regardless of the database environment. You work with examples from the latest versions of MySQL, the world's most popular open source, free database, as well as Oracle and Microsoft SQL Server. In addition, MindTap digital learning solution is available to help you strengthen your SQL skills. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Including the latest Microsoft 365 features and enhanced support for Mac users in introductory level modules, Beskeen's ILLUSTRATED MICROSOFT 365 POWERPOINT COMPREHENSIVE, FIRST EDITION, helps you quickly master the nuances of Microsoft Office. Its concise, student-friendly approach uses a proven two-page layout that allows you to work through an entire task without turning the page. Each module begins with a brief overview of the principles covered while large, full-color screen images illustrate what you see on your computer. Module Learning Objectives are mapped to Microsoft Office Specialist (MOS) certification objectives, and module scenarios are based on data from market insights, helping you sharpen the critical skills you need for real-world success. In addition, MindTap and SAM (Skills Assessment Manager) digital resources help maximize your study time and results. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Master the foundational HTML5 and CSS3 skills that are needed to create outstanding basic websites using this practical, user-friendly book from the popular Illustrated Series. HTML5 AND CSS3 ILLUSTRATED INTRODUCTORY, 2E covers today's basic concepts and must-know skills for developing web pages and websites using the latest HTML5 and CSS3 standards and best practice. Updates throughout this new edition introduce key principles of website design, while integrating coverage of mobile design and testing. This edition provides beginners with the 'nuts-and-bolts' and offers more experienced users the opportunity to brush up on the basics and then move to more advanced topics. Each two-page spread focuses on a single skill, making even complex topics, such as coding with HTML5, easy to follow and absorb. "Features: learn skills to create a basic website; New! covers debugging using browser tools; New! integrates movile design and testing"--Cover. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Learn how to analyze and successfully solve today's real business problems using the latest Microsoft Office Access database management system and the most recent version of Excel spreadsheet tools. Packed with hands-on learning opportunities, Monk/Brady/Mendelsohn's PROBLEM-SOLVING CASES IN MICROSOFT ACCESS AND EXCEL, 16E features five individual tutorials designed to build your practical knowledge as you walk step-by-step through the capabilities of each software application. Twelve all-new case studies challenge you to use the software applications to resolve scenarios and problems you are likely to encounter on the job. In addition, a unique emphasis on skill-building integration demonstrates how to use Access and Excel together to resolve challenges within each case. Trust today's most up-to-date, practical guide for mastering critical Access and Excel skills in a business context. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Gain a thorough understanding of today's sometimes daunting, ever-changing world of technology as you learn how to apply the latest technology to your academic, professional and personal life with TECHNOLOGY FOR SUCCESS: COMPUTER CONCEPTS. Written by a team of best-selling technology authors and based on extensive research and feedback from students like you, this edition breaks each topic into brief, inviting lessons that address the 'what, why and how' behind digital? advancements to ensure deep understanding and application to today's real world. Optional online MindTap and SAM (Skills Assessment Manager) learning tools offer hands-on and step-by-step training, videos that cover the more difficult concepts and simulations that challenge you to solve problems in the actual world. You leave this course able to read the latest technology news and understand its impact on your daily life, the economy and society. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Wilson/Simpson/Antill's HANDS-ON ETHICAL HACKING AND NETWORK DEFENSE, 4th edition, equips you with the knowledge and skills to protect networks using the tools and techniques of an ethical hacker. The authors explore the concept of ethical hacking and its practitioners -- explaining their importance in protecting corporate and government data -- and then deliver an in-depth guide to performing security testing. Thoroughly updated, the text covers new security resources, emerging vulnerabilities and innovative methods to protect networks, mobile security considerations, computer crime laws and penalties for illegal computer hacking. A final project brings concepts together in a penetration testing exercise and report, while virtual machine labs, auto-graded quizzes and interactive activities in the online learning platform help further prepare you for your role as a network security professional. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Designed to provide you with the knowledge and skills needed to protect your technology devices from increasingly sophisticated cyberattacks, SECURITY AWARENESS: APPLYING PRACTICAL CYBERSECURITY IN YOUR WORLD, 6th EDITION continues to present the same practical information that has made previous editions so popular. For most students, practical cybersecurity poses daunting challenges: Do I need antivirus software? How can I manage all my passwords? Can I prevent a ransomware attack? Is there a way to make my Web browser secure? What are patches? This text is designed to help you understand the answers to these questions and to protect your devices and even Wi-Fi networks from cyberattacks. In addition, hands-on projects and case studies give you the opportunity to test your knowledge and apply what you have learned. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Introduce your students to the latest that Microsoft Office has to offer with the new generation of Shelly Cashman Series books! For the past three decades, the Shelly Cashman Series has effectively introduced computer skills to millions of students. With Microsoft Excel 2013, we're continuing our history of innovation by enhancing our proven pedagogy to reflect the learning styles of today's students. In this text you'll find features that are specifically designed to engage students, improve retention, and prepare them for future success. Our trademark step-by-step, screen-by-screen approach now encourages students to expand their understanding of Microsoft Excel 2013 through experimentation, critical thought, and personalization. With these enhancements and more, the Shelly Cashman Series continues to deliver the most effective educational materials for you and your students. Includes features that are specifically designed to engage students, improve retention, and prepare them for future success. This book offers a step-by-step, screen-by-screen approach that encourages students to expand their understanding of Microsoft Excel 2013 through experimentation, critical thought, and personalization. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Ideal for anyone who has never programmed, McMullen/Matthews/Parsons' PROGRAMMING WITH PYTHON uses a beginner's approach that combines conceptual content with rich examples and hands-on learning activities. Straightforward and student friendly, it emphasizes fundamental computer concepts from a Python programming perspective using a clear presentation with little technical jargon. Modules introduce important computer science concepts, procedural programming and object-oriented programming in short segments, while real-world examples, streamlined code and descriptive figures help you better understand today's computing concepts. As you strengthen your computer science knowledge, you will also sharpen critical-thinking and problem-solving skills -- and build confidence. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Cybersecurity attacks grow more complex every day. The first edition of Wilson's COMPTIA PENTEST+ GUIDE TO PENETRATION TESTING helps you gain the knowledge and skills necessary to analyze systems in the same way hackers do. It provides the information you need to successfully pass the CompTIA PenTest+ PTO-002 certification exam and contains detailed examples, projects, and hands-on activities (including virtual machine labs and interactive online features) where you can practice using the actual tools and methodologies needed to be a successful penetration tester. The author begins by exploring the concept of penetration testing, and then walks you through the process of building your own penetration testing lab of virtual machines (hosted on your own computer, which is used to practice the use of pen testing tools and methods). A final project guides you in the creation of a penetration testing report that includes all the areas covered in earlier modules. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Develop the Microsoft Office 365 and Excel 2019 skills students need to be successful in college and beyond with the emphasis on critical-thinking, problem-solving, and in-depth coverage found in NEW PERSPECTIVES MICROSOFT OFFICE 365 & EXCEL 2019 COMPREHENSIVE. Updated with all-new case scenarios, this edition clearly applies the skills students are learning to real-world situations to make concepts even more relevant across the applications and reinforces critical skills to make them successful in their educational and professional careers. NEW PERSPECTIVES MICROSOFT OFFICE 365 & EXCEL 2019 COMPREHENSIVE demonstrates the importance of what students are learning while strengthening your skills and helping students transfer those skills to other applications and disciplines for further success. In addition, MindTap and updated SAM (Skills Assessment Manager) online resources are available to guide additional study and ensure successful results. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Learn about the most popular wireless data communications technologies in use today as Olenewa's GUIDE TO WIRELESS COMMUNICATIONS, 5th Edition, examines Bluetooth, ZigBee, Thread, Wi-Fi, cellular and satellite communications while providing a broad industry perspective. You develop a solid base of knowledge in Wireless Personal Area Networks (WPANs), Wireless Local Area Networks (WLANs), Wireless Metropolitan Area Networks (WMANs) and Wireless Wide Area Networks (WWANs). Written in simple language, with a focus on what you need to know to get started and not sound like a novice, this book's comprehensive approach provides you with the solid background you need to prepare for a future career in today's wireless data communications technology field. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Including the latest Microsoft 365 features and enhanced support for Mac users in introductory level modules, Beskeen/Cram/Wermers/Wilson's ILLUSTRATED MICROSOFT 365 & OFFICE INTERMEDIATE, FIRST EDITION, helps you master the nuances of Microsoft Office. A concise, student-friendly two-page layout allows you to work through an entire task without turning the page. Each module begins with a brief overview of the principles covered while large, full-color screen images illustrate what you see on your computer. Module Learning Objectives are mapped to Microsoft Office Specialist (MOS) certification objectives, and module scenarios are based on data from market insights, helping you sharpen the critical skills you need for real-world success. In addition, MindTap and SAM (Skills Assessment Manager) digital resources help maximize your study time and results. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES provides a thorough guide to perimeter defense fundamentals, including intrusion detection and firewalls. This trusted text also covers more advanced topics such as security policies, network address translation (NAT), packet filtering and analysis, proxy servers, virtual private networks (VPN), and network traffic signatures. Thoroughly updated, the new third edition reflects the latest technology, trends, and techniques including virtualization, VMware, IPv6, and ICMPv6 structure, making it easier for current and aspiring professionals to stay on the cutting edge and one step ahead of potential security threats. A clear writing style and numerous screenshots and illustrations make even complex technical material easier to understand, while tips, activities, and projects throughout the text allow you to hone your skills by applying what you learn. Perfect for students and professionals alike in this high-demand, fast-growing field, GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES, Third Edition, is a must-have resource for success as a network security professional. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condizione: new. Paperback. Give your students a 360-degree education and career advantage with ILLUSTRATED COURSE GUIDES: PROBLEM-SOLVING AND DECISION MAKING - SOFT SKILLS FOR A DIGITAL WORKPLACE. Part of the Illustrated Series Soft Skills, this book, like all others in the series, makes it easy to teach students the essential soft skills necessary to succeed in today's competitive workplace. Timeless information highlights marketable skills that students need for success in the technological workplace. This book addresses 40 critical skills that equip your students with extensive knowledge they can bring with them into today's real world. "Soft skills for a digital workplace"--Cover. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.

Paperback. Condizione: new. Paperback. Using a unique in-depth, case-based approach, Cengage's NEW PERSPECTIVES COLLECTION, Microsoft 365 & PowerPoint 2021 Comprehensive helps you prepare for the Microsoft Office Specialist (MOS) certification exam and success in your future career. As you apply Microsoft Office skills to real-world business scenarios based on Burning Glass market insights, you will sharpen your critical-thinking and problem-solving skills. Professional tips and insights incorporated throughout provide context and relevancy to real-world practice, while ProSkills Boxes help strengthen your employability skills, including written and verbal communication. Updated coverage of Microsoft 365 features and enhanced support for Mac users are also included. In addition, MindTap and up-to-date SAM (Skills Assessment Manager) online resources provide interactive study tools to help maximize your study time -- and results. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.