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--- title: SITCON 2017 R3 共筆 tags: SITCON 2017 共筆, SITCON 2017, R3, 2019, 共筆 GA: UA-34467841-15 --- # SITCON 2017 R3 共筆 ## 第一次在 PostgreSQL 寫程式就上手 — Karl Lin 簡報檔案下載:http://s.ntust.me/sitcon2017/sitcon2017.pdf ## 和我簽訂契約成為區塊鍊魔法少女吧 — 飛魚 * 小故事:小紙條->班長統一記帳->大家一起記帳 * (交易的型態: 雙方私下簽訂條約 → 交由第三方公信力單位或人簽訂條約 → 全體一起(去中心化)) * 班費合約: 1. 提領交易會寫事由 2. 使用私鑰簽章 3. 大額提領需要多重簽名 * 將合約轉譯為程式碼 * 財產管理 * 自動化支付工具 * 去中心化自治組織(DAO) * 衍伸性金融商品 * 發行子貨幣 * 各種加密貨幣: * bitcoin:數位貨幣 * sia:分散式儲存空間 * ethereum:基礎建設 (https://www.ethereum.org/) * Ethereum * Bitcon 也有contract 但不完整 * Ethereum專為開發智能合約而生 * 程式中可有迴圈 * Etherem 規範 * 避免傳播惡意程式碼 * Bitcon可透過靜態分析 * 對每個操作量徵收GAS * 每個區塊的 GAS 上限固定 * GAS * 程式執行的每一步皆需GAS * 無法任意更改自己的GAS數量 * 開發環境: * 安裝Geth / Parity / Pyethapp:同步節點、廣播交易 * 圖形界面Mist / MetaMask(chrome外掛) * 準備足夠量Ethereum買瓦斯 * 部署智能合約 * 將原始碼編譯,get binary & API * 網路回傳的hash就是合約地址 * https://metamask.io/ * 社群參考 * Bitcion 中文社團 * Taipei Etherem Meetup * https://www.meetup.com/Taipei-Ethereum-Meetup/ * GPU Mining ## 寫寫你的美好:一起打造「藝術產生器」吧! — 游宭鎬 * 程式碼們: https://github.com/chiunhau/sitcon2017 * 投影片們: https://www.slideshare.net/chiunhau/ * Generative Art --衍伸式藝術 * 能輸入和輸出之自動化系統 * 設計一個機制 * 可任意改變參數 * 多拉A夢--->靜香團 * 好處 * 突破人類想像力極限 * 將抽象畫之物具象化 * 跟Bug當好朋友~ * 可任意換演算法參數 * 實作--p5\*js * 去年簡報: https://www.slideshare.net/chiunhau/js-library * Ramdom vs Noise * Math.ramdom * 微觀:不連續選擇結果 * 宏觀:均勻選擇結果 * noise(xoff) * 初始化時產生一固定噪音曲線 * 取值間隔小,連續性高,反之亦然 * 延伸運用: Flow field (2D noise + steering behavior) * 用noise產生具連續性的向量,再讓particle追隨這些向量 * 小訣竅 * 擁抱意外 * 師法自然 * 拼拼湊湊 * Thinking Process ![](https://i.imgur.com/94625N7.png) * Grasshopper * Generative 精神 * 專注於過程以及最後output的挑選 * 程式語言只是一種形式 * 善用各種介質特性,突破創作可能 * 簡 報:https://www.slideshare.net/mobile/chiunhau/generative-art-sitcon * Code as Art. Art as Life.

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