Java Virtual Machine

本書通過5種典型結構的工業機器人介紹坐標正變換和逆變換計算方法和程序示例。所選機器人包括6自由度和7自由度的關節式工業機器人，以及6自由度並聯工業機器人。每個程序示例都提供了詳細的坐標變換公式推導過程和完整的源程序，內容涉及機構學、解析幾何、線性代數、數值計算和計算機編程等多方面內容。程序示例使用Java語言編寫，可以在安卓操作系統平板計算機或手機上運行。本書介紹的坐標變換計算方法和程序示例也可以應用於實際的工業機器人控制系統。

A celebration of childhood from an award-winning author, this upbeat day-in-the-life of a bunch of friends was inspired by the #BlackBoyJoy meme that spurred a movement. From sunrise to sunset, a group of young Black boys joyously spend the day together as they live their best lives freely in their community. ­With confidence and a touch of swag, these friends do everything with one another: build a time machine, tend to the community garden, roleplay in the park, read, take a group selfie, and play basketball. With simple, spare text from celebrated author Carole Boston Weatherford and colorful, playful art from Reggie Brown capturing the pleasures of boyhood and friendship, Bros affirms the truth that Black boys deserve and are worthy of a childhood full of joy and free of risk, just as much as anyone. Timely and buoyant, it's a story sure to be enjoyed by anyone who knows what it is to be surrounded by friends with a day of adventure ahead of you.

Available in paperback! A young chapter book series starter about a chicken who loves math, science, and learning new things--by New York Times bestselling author Nancy Krulik. Perfect for fans of Unlimited Squirrels and Bumble and Bee. Chirpy is a young chicken stuck in the family coop. But she's not like the other chickens who just sit around peck peck pecking all day. She's intrigued by the children who come home from a place called school. They always look so happy! (Well, most days.) So Chirpy sneaks onto the bus one morning, hides in the classroom . . . and discovers a true love of math. When she shares what she's learned with the other chickens, they think she's one kernel short of a cob. Even so, Chirpy is determined to find a formula for fowl success by pecking away. But when a hungry fox tries to attack the coop, can she find the equation for a simple solution? With lively two-color art throughout, plus a fun hands-on simple machine activity, this eggs-ellent young chapter bo

本書主要介紹基於 Spring Security 構建系統安全性的技術體系和工程實踐。圍繞安全性需求，本書討論Spring Security框架所提供的各項解決方案，包括認證、授權、加密、CSRF保護、CORS、方法級安全訪問、OAuth2協議、微服務架構、JWT、單點登錄等核心功能。同時，本書基於這些功能構建了完整的三個案例系統，並給出了具體的實現過程和示例代碼。本書面向廣大服務端開發人員，讀者不需要有很深的技術功底，也不限於特定的開發語言，但熟悉Java EE常見技術並掌握一定系統設計基本概念有助於更好地理解書中的內容。同時，本書也適合對安全性實現技術感興趣的開發人員學習。

本書主要講解Linux桌面操作系統Ubuntu的配置管理、桌面應用、編程和軟件開發。全書共12章，內容包括Ubuntu 概述、安裝與基本操作，用戶與組管理，文件與目錄管理，磁盤存儲管理，軟件包管理，系統高級管理，Ubuntu桌面應用，Shell編程，C/C++編程，Java與Android開發環境，PHP、Python和Node.js開發環境，Ubuntu服務器。本書內容豐富，注重實踐性和可操作性，對每個知識點都有相應的操作示範，便於讀者快速上手。本書可作為高等院校、職業院校計算機專業的教材，也可作為Ubuntu Linux系統操作人員的參考書，以及各類培訓班教材。

本書將從基礎開始, 全面介紹大數據可視化的底層原理和實現框架, 並重點講解一些常用的大數據可視化關鍵技術, 包括Excel圖表、Tableau Desktop可視化組件、Web的可視化控件、Java可視化控件以及Python數據可視化工具。本書配套案例代碼、PPT課件、教學視頻、教學大綱與執行進度表。本書共分為8章, 第1章著重介紹大數據的發展歷程, 以及在大數據發展背景下數據可視化的概念、可視化技術的使用及可視化的現實意義; 第2章著重介紹如何通過Excel工具實現數據可視化的內容; 第3章著重介紹Tableau可視化工具的使用、數據處理、數據可視化的應用等內容; 第4章著重介紹以Highcharts、D3可視化為主要內容的Web可視化組件; 第5章著重介紹以JFreeChart和Echarts為代表的Java可視化控件的安裝、功能及使用案例; 第6章著重介紹以Python編程為基礎的數據可視化工具, 包括Matplotlib框架、Bokeh框架、pairplot框架以及基於ECharts的pyecharts框架; 第7章介紹豆瓣電影數據可視化應用案例; 第8章介紹餐飲數據可視化應用案例。

人的感覺分為視覺（用眼睛看）、聽覺（用耳朵聽）、味覺（用舌頭嘗）、嗅覺（用鼻子聞）和觸覺（用皮膚感知），統稱為“五感”。其中，視覺是指根據可見光等光線信息推測外界的結構，對外界物體的色彩、形狀相關信息，物體的種類相關信息、物體的位置關係等外界空間信息等進行推測的感知能力。“見”一詞有著各種各樣的含義，亦可寫作“觀（觀賞）”、“診（診斷）”、“看（照料）”、“視（調查）”。那麼，跳出人的感覺之外，公司所追求的究竟是哪一種“看”呢？而看見之後又應采取怎樣的行動呢？本書將圍繞製造現場的“可視化”展開思考，從製造現場的物品、4M（人man、機器machine、方法method、材料material）、QCDS（質量quality、成本cost、交貨delivery、安全safety）、信息、日常管理、方向性、經營整體七個角度闡述可視化。

With special bonus content – a letter to readers from Alice OsemanThe second novel by the phenomenally talented Alice Oseman, author of Solitaire and graphic novel series Heartstopper – now a major Netflix series.What if everything you set yourself up to be was wrong?Frances has always been a study machine with one goal, elite university. Nothing will stand in her way; not friends, not a guilty secret – not even the person she is on the inside.But when Frances meets Aled, the shy genius behind her favourite podcast, she discovers a new freedom. He unlocks the door to Real Frances and for the first time she experiences true friendship, unafraid to be herself. Then the podcast goes viral and the fragile trust between them is broken.Caught between who she was and who she longs to be, Frances’ dreams come crashing down. Suffocating with guilt, she knows that she has to confront her past…She has to confess why Carys disappeared…Meanwhile at uni, Aled is alone, fighting even darker secrets.I

A timely investigation of the potential economic effects, both realized and unrealized, of artificial intelligence within the United States healthcare system. In sweeping conversations about the impact of artificial intelligence on many sectors of the economy, healthcare has received relatively little attention. Yet it seems unlikely that an industry that represents nearly one-fifth of the economy could escape the efficiency and cost-driven disruptions of AI. The Economics of Artificial Intelligence: Health Care Challenges brings together contributions from health economists, physicians, philosophers, and scholars in law, public health, and machine learning to identify the primary barriers to entry of AI in the healthcare sector. Across original papers and in wide-ranging responses, the contributors analyze barriers of four types: incentives, management, data availability, and regulation. They also suggest that AI has the potential to improve outcomes and lower costs. Understanding bot

《Science FACTopia!》是暢銷 FACTopia! 系列第六冊，以巧妙的知識連鎖設計，串連關於太空、動物、礦石與水晶、虛擬實境、人體、程式編碼、3D列印、工程、植物、真菌、數學等400則趣味事實。你將遇見名為 Squawkzilla 的鸚鵡、認識人體最快的肌肉、發現會變色的寶石，以及會「打嗝」的黑洞。全書結合幽默插圖與攝影圖像，並經《大英百科全書》專家審核，將 STEM 主題生動呈現，讓孩子忍不住與朋友家人分享。📖 亮點★ 400則 STEM 趣味知識，跨足多領域★ 巧妙連鎖閱讀設計，知識無縫接軌★ 插圖與攝影結合，內容生動Science FACTopia! is the sixth title in the bestselling FACTopia! series. Follow an ingenious trail of 400 facts about space, animals, rocks and crystals, virtual reality, the body, coding, 3D printing, engineering, plants, fungi, maths and more, where each fact is connected to the next in entertaining and unexpected ways. You’ll meet a parrot called Squawkzilla, find out about the fastest muscles in the body, discover gems that can change colour and learn about black holes that ‘burp’.Lavishly illustrated with witty illustrations that combine artwork and photography, and verified by the experts at Encyclopaedia Britannica, Science FACTopia! brings STEM topics to life with facts children will be desperate to share wit