Design and build land, air, and sea drones using Ardupilot with Pixhawk 2.1 About This Book ? Explore the best practices used by the top industry professionals that will not only help you build drones in time, but also build effective solutions to cater to. ? Navigate through the complexities of Ardupilot to put together a complete functional UAV and assemble your drone ? Learn through practical examples that help you build robust UAV flight and ground control components Who This Book Is For The primary audience for this book is anyone (enthusiasts and hobbyists) who dream of building their own drones. It will also help those who are trying to build UAVs for commercial purposes. Some prior experience with microcontrollers and electronics would be useful. What You Will Learn ? Kitbash "dumb" objects into smart ones ? Program Pixhawk for your drones ? Fabricate your own parts out of different materials ? Integrate Pixhawk into different types of drones ? Build and understand the significant difference between land, sea, and air drones ? Adapt old Pixhawk sensors to the new Pixhawk 2.1 plugs ? Become familiar with procedures for testing your new drones In Detail The Ardupilot platform is an application ecosystem that encompasses various OS projects for drone programming, flight control, and advanced functionalities.The Ardupilot platform supports many Comms and APIs, such as DroneKit, ROS, and MAVLink. It unites OS drone projects to provide a common codebase. With the help of this book, you will have the satisfaction of building a drone from scratch and exploring its many recreational uses (aerial photography, playing, aerial surveillance, and so on). This book helps individuals and communities build powerful UAVs for both personal and commercial purposes. You will learn to unleash the Ardupilot technology for building, monitoring, and controlling your drones.This is a step-by-step guide covering practical examples and instructions for assembling a drone, building ground control unit using microcontrollers, QgroundControl, and MissionPlanner. You can further build robotic applications on your drone utilizing critical software libraries and tools from the ROS framework. With the help of DroneKit and MAVLink (for reliable communication), you can customize applications via cloud and mobile to interact with your UAV. Style and approach Step-by-step instructions to help assemble your first drone with the Ardupilot platform.

Learn how to leverage the features of the new Entity Framework Core APIs and use them to build pure .NET Core applications. About This Book ? Learn how to effectively manage your database to make it more productive and maintainable. ? Write simplified queries using LINQ to acquire the desired data easily ? Raise the abstraction level from data to objects so teams can function independently, resulting in easily maintainable code Who This Book Is For This book is for .NET Core developers who would like to integrate EF Core in their application. Prior knowledge of .NET Core and C# is assumed. What You Will Learn ? Create databases and perform CRUD operations on them ? Understand and build relationships (related to entities, keys, and properties) ? Understand in-built, custom, and remote validation (both client and server side) ? You will learn to handle concurrency to build responsive applications ? You will handle transactions and multi-tenancy while also improving performance In Detail Being able to create and maintain data-oriented applications has become crucial in modern programming. This is why Microsoft came up with Entity Framework so architects can optimize storage requirements while also writing efficient and maintainable application code. This book is a comprehensive guide that will show how to utilize the power of the Entity Framework to build efficient .NET Core applications. It not only teaches all the fundamentals of Entity Framework Core but also demonstrates how to use it practically so you can implement it in your software development. The book is divided into three modules. The first module focuses on building entities and relationships. Here you will also learn about different mapping techniques, which will help you choose the one best suited to your application design. Once you have understood the fundamentals of the Entity Framework, you will move on to learn about validation and querying in the second module. It will also teach you how to execute raw SQL queries and extend the Entity Framework to leverage Query Objects using the Query Object Pattern. The final module of the book focuses on performance optimization and managing the security of your application. You will learn to implement failsafe mechanisms using concurrency tokens. The book also explores row-level security and multitenant databases in detail. By the end of the book, you will be proficient in implementing Entity Framework on your .NET Core applications. Style and approach This book is filled with various examples that will help you use Entity Framework Core 2.0 to write efficient software.

風──創作路，多風暴；風眼中，看平靜。 花──風旅中，遇花海；學種花，孕新生。 雪──花落時，雪堵路；寒道裡，享甘薯。 月──雪告別，前路明；月照下，見新遊。 作者在書中以自然之景──風、花、雪、月為幹，既說一己的創作歷程，又細說對人世間的萬事萬物的觀察，體現作者的觀點與視覺。 綣綣塵世間，我們會遇到風雨，但風雨過後，得享霎時平靜，柳暗花明，未至絕路。碰到寒雪堵路，調整心境，實是享甘薯的好時光。人生有高有低，或臨絕處卻又逢生。作者欲藉文、圖道出的，正是此理。 此作以清新的繪圖為主，配以精簡的文字，感悟各式各樣人生小道理，讓讀者在閱讀之時，享受一刻的清泉，澄明身心。 內文範例： 同生同等。 兒時，我無聊跳高伸手蜻蜓，但牠總會飛高來欺負我； 當時我還無知地認為長高後，牠就難逃我的魔掌。 今天，牠就在我身邊飛過，當然人大了， 我沒伸出那頑皮手來捉牠。 因我明白，不是現在我的高度足以捉到牠， 而是牠因快下雨而低飛。 我早就不應跟牠比較高低，即使現在我能力比牠高，亦不等於我就要向牠施展魔爪， 因從沒有誰想打倒誰，而是本身就是應該共存。

本書從鍛鍊體魄的好處開始，仔細講解跑步前的風險評估，按個人體能和目標設計的多種長跑訓練計劃和訓練方法，如長距離跑、節奏跑及間歇跑的要點，還詳述如何預防受傷、處理傷患、配合飲食營養，加強鍛鍊效果。

「極短篇」，又有人稱之為「小小說」或「掌上小說」。寫「極短篇」，極不容易，在如此小的篇幅內說故事，從頭到尾，一眼望盡，瑕瑜立見，無可隱藏，其實「難度」相當高。 但本書作者卻是寫「極短篇」的高手，書中精選了她的三十篇佳作，當中的故事，既有愛情的，也有人情的，甚至奇幻的，題材豐富，異彩紛呈，情節引人入勝，結局又出人意表。每個故事讀後，相信讀者或會會心微笑，或會擊節驚歎，又或會領悟到一點點人生的道理。

Speed up the software delivery process and software productivity using the latest features of Jenkins About This Book ? Take advantage of a Continuous Integration and Continuous Delivery solution to speed up productivity and achieve faster software delivery ? See all the new features introduced in Jenkins 2.x, such as Pipeline as code, Multibranch pipeline, Docker Plugin, and more ? Learn to implement Continuous Integration and Continuous Delivery by orchestrating multiple DevOps tools using Jenkins Who This Book Is For The book is for those with little or no previous experience with Agile or CI and CD. It’s a good starting point for anyone new to this field who wants to leverage the benefits of CI and CD to increase productivity and reduce delivery time. It’s ideal for Build and Release engineers, DevOps engineers, SCM (Software Configuration Management) engineers, developers, testers, and project managers. If you’re already using Jenkins for CI, you can take your project to the next level—CD. What You Will Learn ? Get to know some of the most popular ways to set up Jenkins ? See all the new features introduced in the latest Jenkins, such as pipeline as code, Multibranch pipeline, and more ? Manage users, projects, and permissions in Jenkins to ensure better security ? Leverage the power of plugins in Jenkins ? Learn how to create a CI pipeline using Jenkins Blue Ocean ? Create a distributed build farm using Docker and use it with Jenkins ? Implement CI and CD using Jenkins ? See the difference between CD and Continuous Deployment ? Understand the concepts of CI In Detail In past few years, agile software development has seen tremendous growth. There is a huge demand for software delivery solutions that are fast yet flexible to numerous amendments. As a result, Continuous Integration (CI) and Continuous Delivery (CD) methodologies are gaining popularity. This book starts off by explaining the concepts of CI and its significance in the Agile. Next, you'll learn how to configure and set up Jenkins in many different ways. The book exploits the concept of "pipeline as code" and various other features introduced in the Jenkins 2.x release to their full potential. We also talk in detail about the new Jenkins Blue Ocean interface and the features that help to quickly and easily create a CI pipeline. Then we dive into the various features offered by Jenkins one by one, exploiting them for CI and CD. Jenkins' core functionality and flexibility allows it to fit in a variety of environments and can help streamline the development process for all stakeholders. Next, you'll be introduced to CD and will learn how to achieve it using Jenkins. Through this book's wealth of best practices and real-world tips, you'll discover how easy it is to implement CI and CD using Jenkins. Style and approach The book uses a simple Maven project to demonstrate the implementation of CI and CD using Jenkins. This step-by-step guide shows you how to implement CI/CD and can be used as a template to perform CI/CD in your projects.

A practical book which will help the readers understand how the container ecosystem and OpenStack work together. About This Book ? Gets you acquainted with containerization in private cloud ? Learn to effectively manage and secure your containers in OpenStack ? Practical use cases on container deployment and management using OpenStack components Who This Book Is For This book is targeted towards cloud engineers, system administrators, or anyone from the production team who works on OpenStack cloud. This book act as an end to end guide for anyone who wants to start using the concept of containerization on private cloud. Some basic knowledge of Docker and Kubernetes will help. What You Will Learn ? Understand the role of containers in the OpenStack ecosystem ? Learn about containers and different types of container runtimes tools. ? Understand containerization in OpenStack with respect to the deployment framework, platform services, application deployment, and security ? Get skilled in using OpenStack to run your applications inside containers ? Explore the best practices of using containers in OpenStack. In Detail Containers are one of the most talked about technologies of recent times. They have become increasingly popular as they are changing the way we develop, deploy, and run software applications. OpenStack gets tremendous traction as it is used by many organizations across the globe and as containers gain in popularity and become complex, it’s necessary for OpenStack to provide various infrastructure resources for containers, such as compute, network, and storage. Containers in OpenStack answers the question, how can OpenStack keep ahead of the increasing challenges of container technology? You will start by getting familiar with container and OpenStack basics, so that you understand how the container ecosystem and OpenStack work together. To understand networking, managing application services and deployment tools, the book has dedicated chapters for different OpenStack projects: Magnum, Zun, Kuryr, Murano, and Kolla. Towards the end, you will be introduced to some best practices to secure your containers and COE on OpenStack, with an overview of using each OpenStack projects for different use cases. Style and approach An end to end guide for anyone who wants to start using the concept of containerization on private cloud.

世界各地之有味笑話如恆河沙數，素來是廣受大眾歡迎的流行讀本。本書作者Mr. C特別編撰「小小笑話」系列，精選妙絕抵死的笑話匯集成篇，以輕巧且價錢相宜的迷你版本出版，為你帶來經濟實惠的閱讀樂趣和享受。除了豐富精選的笑話，書首更有得意有趣的遊戲，供大家互動玩耍一下，順便先來個大腦熱熱身，然後再放開懷抱笑個痛快。 《癲癲WORKING》及《公主病駕到》分別取材為Office笑話及男女關係笑話，詼諧抵死，適合成人閱讀。 《囧囧CLUB》及《女王捉字室》則取材為校園笑話(classroom jokes)，幽默搞笑，適合學生閱讀。

《拆走醫院的炸彈》以40個關於醫生、病人、護士及家屬的真實個案，改編成活潑生動的故事去講述醫患關係，出版未足半年初版3000冊已售罄，反應理想。 本書文字簡短精練，盡量保留病房內外、醫生護士與病人及家屬之間衝突中的言行，其中也有病房內外的特殊用語、有趣代號甚或爛gag等，生動傳神。 其實人的一生總離不開醫院、醫生與護士。不過，由於種種言語、心理、行為上的誤會、誤解、矛盾、衝突，醫患之間始終不容易建立起互信、互諒的關係，因此醫院內「炸彈」處處！如何拆彈？！ 細閱本書，讀者除了可看到病房眾生相外，更可嘗試代入角色，想像一下炸彈引爆前的凝重、爆發一刻的顫震，以及爆後心理的忐忑。本書更試圖從第三者的角度，提出「拆彈」的忠告與實踐良策。可讀之餘，發人深省。 《拆走醫院的炸彈》新版除了保留了故事、沙龍照片、勵志金句外，在內容上也作出了修訂；特別的是更換上新裝。今次伊利沙伯醫院破天荒邀請到醫管局主席胡定旭、香港防癌會主席高永文醫生，聯同一眾演藝界明星名人葛民輝、羅蘭、廖安麗，以及譚玉瑛一起粉墨登場，角色扮演醫生、病人、護士及家屬，拍攝封面及內頁照片；星光熠熠，令人耳目一新！

本書從提高小學生寫字能力的角度出發，以香港教育局課程發展處中國語文教育組編訂的《香港小學學習字詞表》為基礎，參考衆多小學語文教材，精選350個小學階段使用頻率、構字構詞能力強的漢字，從偏旁、筆畫、筆順等方面對漢字逐一解構，幫助小學生掌握正確的漢字書寫規則。

本書運用現代語言學方法，將粵語作為一個完整的語言系統，從詞彙、詞法、句法等方面，全面論述粵語語法上的種種表現，兼論粵語音系和各種拼音系統的異同。一方面可作為研究和學習粵語的教材，讓讀者對粵語的語言特點有較為完整的認識，；另一方面，以讀者熟悉的具體語言事實來說明比較抽象的理論，做到既能介紹粵語特色，又能普及語言學基本概念，亦適合所有對粵語有興趣的普通讀者閱讀。

本書精選小學生8種常用修辭法，包括：比喻、擬人、排比、反復、設問、反問、誇張、對偶等，提供3百多條測試題目，輔以淺白的文字加以解說，幫助學生讀者把握運用有關修辭的用法。為增添閱讀趣味，本書加入了生動的故事，幽默的漫畫和形式豐富的遊戲，務求做到「學」與「樂」統一。

重點探討慢性腎病中西治療比較及配合，並清楚列出容易產生的併發症，慢性腎衰竭的狀況，提供實用診治和個人調養方法。提供中藥藥饍、食療、生活方式調護，並輔以簡易的菜餚、湯水等食譜，讀者可以自行烹調食用。

香港中文大歷史系成立於1963年，至2013年已經歷了五十年。在這五十年的歲月中，歷史系的前賢和師輩奠下了嚴肅的學術風氣與扎實的研究根基。莘莘學子，遂得以承傳錢穆、牟潤孫、全漢昇、嚴耕望、王德昭、孫國棟等眾多史學名宿的治學精神。 為了慶祝歷史系踏入金禧之年，我們邀請校友撰文論述前輩老師的個人風骨、學術成就、治史理念、研究心得及教學旨趣等，編成此書以總結五十年來歷史系前賢的開創、耕耘之功及治史業績，好讓後輩繼往開來，延續並發展創系以來的理念和精神。

全書包含幾個英語語法範疇：易混淆詞、單複數、量詞、數目詞彙、同音異義詞、短語動詞、慣用語、明喻和隱喻等 內容選自余黎青萍於報章撰寫的專欄文章，談及英語學習不同的重要範疇，作者從日常生活、工作、傳媒報導等搜集實例，從反方面指出措辭不當、似是而非的毛病，也從正面說明如何學好英語，如何活用 phrasal verbs 及 idioms，幫助讀者明白英語如何可表達得傳神。

A FAMILY'S GIFT When they were young, cousins Ella, Rachel and Jo were always together at their family’s lake house. As they grew up, though, they grew apart… until now, as the three must band together to grant a beloved aunt's dying wish: to finish the quilt she began as a gift for her daughter's Christmas wedding. LET IT SNOW Searching for vintage quilting fabric, independent Jo is reunited with the man she thought she’d marry. And proves that sometimes the second time's the charm… YOU BETTER WATCH OUT Ella is desperate when the unfinished quilt goes missing in her care. But a cocky lawyer might just help her find it – and find love. “Nine Ladies Dancing” by Sarah Mayberry – Shy Rachel risks exposing her secret life when she falls for her quilting teacher's seemingly perfect son, in this novella by Janice Kay Johnson. Together, Jo, Ella and Rachel create a Christmas heirloom that's both a wish and promise – of happiness, hope and love everlasting.

Fast Fiction Paranormal - quick reads to transport you to another world Erika Cenov has dreams where someone dies - and then it comes true. Her latest nightmare has a young girl being abducted and the man she once loved, Lazlo Brennan, being shot and turning into a wolf. Erika doesn't want to believe her vision. Then a child goes missing and the detective on the case is Lazlo Brennan. Erika knows Lazlo will die. Unless, for the first time, she can change the outcome of her dreams…and save them all.

ON THE WAY TO A WEDDING… BORROWED BRIDE Dark and devastating P.I. Nick Claiborne's love 'em and leave 'em policy was suddenly in jeopardy. Because his new client, Analise Brewster, not only insisted on "helping" him uncover the mystery of her fiancé's past, her irrepressible spirit tempted Nick to forget his vows to stay single–and hers to wed another…. Spending time with a lively, loving woman usually made Nick want to run–but this time he found himself taking Analise with him. Yet once they'd found Analise's gift for her groom, would Nick be the one walking down the aisle? Long-lost twins discover their perfect grooms!

If you like Debra's books, check out HER MULE HOLLOW COWBOY & RAFE book 1&2 of her new series New Horizon Ranch of Mule Hollow FALLING FOR THE COWBOY Rowdy McDermott has a plan. Stay on the straight and narrow, help the foster boys on Sunrise Ranch, and forget about love. The last thing he expected is his pretty new neighbor falling literally into his arms. Lucy Calvert is glad the handsome cowboy broke her fall, but isn't ready for the feelings he's stirring in her heart. She's heard rumors about his past, and is steering clear from the kind of man he used to be. With a little help from his boys, can Rowdy show her that people--and hearts--can change? Cowboys of Sunrise Ranch: These men have hearts as big as Texas.

Terror stalks a small Virginia town FBI rising star and criminal profiler Evelyn Baine knows how to think like a serial killer. But she’s never chased anyone like the Bakersville Burier, who hunts young women and displays them, half-buried, deep in the woods. As the body count climbs, Evelyn’s relentless pursuit of the killer puts her career—and her life—at risk. And the evil lurking in the Burier’s mind may be more than even she can unravel. Terror is closer than she thinks… The Bakersville Burier knows he’s got an FBI profiler on his trail. He knows who she is and where to find her. And he’s biding his time, because he’s planned a special punishment for Evelyn. She may have tracked other killers, but he vows to make this her last chase. This time it’s her turn to be hunted! Praise for Elizabeth Heiter “Gripping from the first page, VANISHED will keep you on the edge of your seat all the way to its searing conclusion…a roller coaster of a thriller.” — Jeffery Deaver, New York Times bestselling author

MARRIAGE IS NOT HER MISSION Escaping a society wedding, Annabelle Baldwin followed her heart to Liberia to pursue her calling as a missionary. But when an attempted kidnapping lands her under the protection of Stewart Hastings, Anna’s journey takes a new turn. The wounded war veteran needs a guide through the jungle. It’s a job the under-funded missionary can’t refuse, despite the feelings Stewart stirs in her guarded heart. Stewart knows he won't succeed without Anna’s expertise. And when danger puts her life at risk, he realizes he cannot live without Anna by his side. But what will it take for a man who has lost his faith to capture the heart of a woman who lives for hers?