Happy Teacher’s Day in Taiwan. We celebrate this day based on the Chinese essential educator- Confucius’ birthday 🎂
Education is always a meaningful job!
祝教師們教師節快樂!教育一直是一個非常有意義而且重要的工作,每個老師都以各自的方式努力希望能栽培和傳授最好的知識,讓學習的人能夠青出於藍!
創作這張插畫時,正值野外求生的節目蓬勃發展的時候,而我還滿喜歡看「跟著貝爾去冒險」!
野外求生時,有經驗的探險者會如導師一般引領著學生度過險境生存下來,而學生也學得了這些經驗面對下一個階段的挑戰,也因此給了我使用這個題材來創作的靈感。
#illustration #education #artist #art #artwork #illustrationagency #yuminghuang #插畫 #教育 #教師節 #instart #school #student #teacher #happyteachersday 文化內容策進院 Taiwan Creative Content Agency文化部dPi 設計插畫誌台北插畫藝術節 Taipei Illustration FairWacom Taiwan 人間衛視 教育部
同時也有166部Youtube影片,追蹤數超過841的網紅Michelle Yuan,也在其Youtube影片中提到,台灣防疫旅館生活張怎麼樣?我今天跟你們分享的Taiwan Quarantine Vlog包含台北中山意舍酒店防疫旅館開箱 (AMBA ZHONGSHAN開箱),到桃園機場到底要幹嘛,防疫旅館每天可以吃什麼東西,如何自己做篩檢,到底要去哪裏做PCR TEST,防疫旅館運動,里長送的防疫包開箱,等等!要...
「art in taipei」的推薦目錄:
- 關於art in taipei 在 Facebook 的最讚貼文
- 關於art in taipei 在 Taipei Ethereum Meetup Facebook 的最佳貼文
- 關於art in taipei 在 典藏 ARTouch.com Facebook 的最佳貼文
- 關於art in taipei 在 Michelle Yuan Youtube 的最佳貼文
- 關於art in taipei 在 蔡健雅 Tanya Chua Youtube 的最讚貼文
- 關於art in taipei 在 Tracy L. 紙上旅行 Youtube 的最佳解答
- 關於art in taipei 在 ART TAIPEI 台北國際藝術博覽會- Home | Facebook 的評價
art in taipei 在 Taipei Ethereum Meetup Facebook 的最佳貼文
📜 [專欄新文章] Gas Efficient Card Drawing in Solidity
✍️ Ping Chen
📥 歡迎投稿: https://medium.com/taipei-ethereum-meetup #徵技術分享文 #使用心得 #教學文 #medium
Assign random numbers as the index of newly minted NFTs
Scenario
The fun of generative art NFT projects depends on randomness. The industry standard is “blind box”, where both the images’ serial number and the NFTs’ index are predetermined but will be shifted randomly when the selling period ends. (They call it “reveal”) This approach effectively solves the randomness issue. However, it also requires buyers to wait until the campaign terminates. What if buyers want to know the exact card right away? We’ll need a reliable onchain card drawing solution.
The creator of Astrogator🐊 isn’t a fan of blind boxes; instead, it thinks unpacking cards right after purchase is more interesting.
Spec
When initializing this NFT contract, the creator will determine the total supply of it. And there will be an iterable function that is randomly picking a number from the remaining pool. The number must be in range and must not collide with any existing ones.
Our top priority is accessibility/gas efficiency. Given that gas cost on Ethereum is damn high nowadays, we need an elegant algorithm to control gas expanse at an acceptable range.
Achieving robust randomness isn’t the primary goal here. We assume there’s no strong financial incentive to cheat, so the RNG isn’t specified. Implementers can bring their own source of randomness that they think is good enough.
Implementation
Overview
The implementation is pretty short and straightforward. Imagine there’s an array that contains all remaining(unsold) cards. When drawIndex() is called, it generates a (uniform) random seed to draw a card from the array, shortens the array, and returns the selected card.
Algorithm
Drawing X cards from a deck with the same X amount of cards is equal to shuffling the deck and dealing them sequentially. It’s not a surprise that our algorithm is similar to random shuffling, and the only difference is turning that classic algo into an interactive version.
A typical random shuffle looks like this: for an array with N elements, you randomly pick a number i in (0,N), swap array[0] and array[i], then choose another number i in (1,N), swap array[1] and array[i], and so on. Eventually, you’ll get a mathematically random array in O(N) time.
So, the concept of our random card dealing is the same. When a user mints a new card, the smart contract picks a number in the array as NFT index, then grabs a number from the tail to fill the vacancy, in order to keep the array continuous.
Tweak
Furthermore, as long as the space of the NFT index is known, we don’t need to declare/initialize an array(which is super gas-intensive). Instead, assume there’s such an array that the n-th element is n, we don’t actually initialize it (so it is an array only contains “0”) until the rule is broken.
For the convenience of explanation, let’s call that mapping cache. If cache[i] is empty, it should be interpreted as i instead of 0. On the other hand, when a number is chosen and used, we’ll need to fill it up with another unused number. An intuitive method is to pick a number from the end of the array, since the length of the array is going to decrease by 1.
By doing so, the gas cost in the worst-case scenario is bound to be constant.
Performance and limitation
Comparing with the normal ascending index NFT minting, our random NFT implementation requires two extra SSTORE and one extra SLOAD, which cost 12600 ~ 27600 (5000+20000+2600) excess gas per token minted.
Theoretically, any instantly generated onchain random number is vulnerable. We can restrict contract interaction to mitigate risk. The mitigation is far from perfect, but it is the tradeoff that we have to accept.
ping.eth
Gas Efficient Card Drawing in Solidity was originally published in Taipei Ethereum Meetup on Medium, where people are continuing the conversation by highlighting and responding to this story.
👏 歡迎轉載分享鼓掌
art in taipei 在 典藏 ARTouch.com Facebook 的最佳貼文
#市場新聞 #艾根畫廊快閃展覽
德國艾根畫廊 (Galerie EIGEN+ART Leipzig/Berlin)即將於台北藝博(ART TAIPEI)期間來台舉辦Pop-up展覽「Galerie EIGEN + ART in Taipei」,這是繼立木畫廊、施博爾藝廊於台北舉辦Pop-up展後的又一抵台舉辦快閃展的國際畫廊,此次將於台北大安區Daily by Draftland 展出萊比錫畫派、立體派大師以及歐美當代共11位國際重要藝術家創作。
art in taipei 在 Michelle Yuan Youtube 的最佳貼文
台灣防疫旅館生活張怎麼樣?我今天跟你們分享的Taiwan Quarantine Vlog包含台北中山意舍酒店防疫旅館開箱 (AMBA ZHONGSHAN開箱),到桃園機場到底要幹嘛,防疫旅館每天可以吃什麼東西,如何自己做篩檢,到底要去哪裏做PCR TEST,防疫旅館運動,里長送的防疫包開箱,等等!要來台灣隔離的朋友希望你們覺得這次的VLOG很有用!💕
Welcome to my quarantine vlog! For those who are interested in what quarantine hotels in Taiwan look like, I wanted to show you guys my quarantine hotel room tour (Amba Zhongshan quarantine hotel room tour), what I had to do when I landed in Taoyuan Airport, what I got to eat everyday at Amba Zhongshan, how I did the self PCR test, where and when to get the official PCR test, some quarantine hotel workouts, and what the district major sent me in my quarantine self care kit! Hopefully you guys will find this super helpful when you come quarantine in Taiwan!
—
大家好~我是Michelle!
希望可以跟大家分享我的日常生活,旅遊紀錄,家庭裝飾,還有一些美妝 + 時尚的小確幸 !
📍台北台灣 Taipei, Taiwan
🌟 來打個招呼 SAY HI! 🌟
IG: http://www.instagram.com/michelleyuan
部落格 BLOG: http://www.michelleyuan.com
Hello, welcome to my channel! I'm Michelle, born in NYC but now living in Taipei, Taiwan with my family. I like to share everything from beauty, travel, fashion, home decor, and more! Hope you enjoy this channel and I hope we can stay connected! 💕
—
🎥 VIDEO EDIT & ART: partner.canva.com/michelleyuan
🎶 音樂 MUSIC CREDIT: Biscuit (Prod. by Lukrembo)
—
#防疫旅生活 #amba中山開箱 #ambazhongshan #taiwanquarantinehotel
art in taipei 在 蔡健雅 Tanya Chua Youtube 的最讚貼文
#蔡健雅 #Bluebirds #陳珊妮
向自由不羈的許諾 化作追尋萬善的青鳥 振翅於顛倒之上
〈Bluebirds〉承接整張《DEPART》專輯的首要概念 - 人們對於未知的嚮往。然而現狀不安的暗潮洶湧,是非紛擾讓初心動搖,但我們何不就像青鳥一樣?義無反顧地向天空振翅高飛、懷抱單純的信念朝希望奔去。
編曲上,吉他及曼陀林撐起了整首歌的基調,彷彿人心中的純粹,正往設定的道路前行。Ricky Ho 為歌曲譜寫的弦樂,邀來保加利亞國家廣播交響樂團演出錄製,將他運用對歌曲的想像化成恢宏的樂曲,賦予〈Bluebirds〉更加磅礴厚實的音樂份量。蔡健雅與 Ricky Ho 運用弦樂與陶笛,展現如同青鳥的翱翔於天地的寬廣。展現我們對於善的渴望、自由的追求,在聽覺上,也有史詩般的畫面感受。
〈Bluebirds〉邀來陳珊妮擔任 MV 導演。她選擇以「青鳥」的角度,檢視疫情之下的當代生活,試圖拋出「究竟何為幸福」的大哉問。MV 中透過多段俯瞰角度的影像,紀錄了流淚的空姐、揮汗送餐的外送員、辛苦的醫護人員,以及平凡的情侶和學生等等人物的日常畫面,陳珊妮表示:「大部分的人,都不認為自己是被幸福眷顧的,但其實你可能也不是最痛苦的,端看自己用什麼樣的角度去看待生活。」
加入蔡健雅 Tanya 臉書粉絲團:http://goo.gl/FO5Gd
追蹤蔡健雅 Instagram 官方帳號:https://reurl.cc/qgopjp
訂閱蔡健雅 YouTube 官方頻道:https://goo.gl/XhaU7T
關注蔡健雅 Tanya 官方微博:http://goo.gl/mPx3Qq
Bluebirds
詞曲:蔡健雅
Bluebirds bluebirds in the sky
Tell me that I’ll be alright
Bluebirds bluebirds flying high
Tell me it will be alright
眼前的路 看似有點模糊 我看不清楚
我甩不掉 心中那份絕望 該死的絕望
好想飛到 沒有人的地方
在那地方 徹底把它埋葬
望著天空吶喊 請你還我自由
Bluebirds bluebirds in the sky
Tell me that I’ll be alright
Bluebirds bluebirds flying high
Tell me it will be alright
星光閃爍 給了無數承諾 煽情的煙火
厭倦謊言 厭倦人間是非 該死的是非
好想飛到 最遙遠的地方
在那地方 萬物都是善良
望著天空吶喊 請你還我希望
Bluebirds bluebirds in the sky
Tell me that I’ll be alright
Bluebirds bluebirds flying high
Tell me it will be alright
Bluebirds bluebirds in the sky
Tell me that I’ll be alright
Bluebirds bluebirds flying high
Tell me it will be alright
Bluebirds bluebirds in the sky
Tell me that I’ll be alright
Bluebirds bluebirds flying high
Tell me we will be alright
Bluebirds bluebirds flying high
Tell me we will be alright
音樂製作團隊
Producer:蔡健雅 Tanya Chua
Arrangement/Orchestration:何國杰 Ricky Ho
Acoustic Gtr /Mandolin:蔡健雅 Tanya Chua
Recording Engineer:蔡健雅 Tanya Chua
Recorded at Tangy Music Studio Taipei
Ocarina:許凱翔 Rit Xu
Cello solo:Christo Tanev
Percussions programming:何國杰 Ricky Ho
Strings performed by Bulgarian National Radio Symphony Orchestra
Conducted by Grigor Palikarov
Orchestra Manager:Slav Slavtchev
Strings Recording Studio:Doli Studio (Sofia)
Orchestra Recording Engineer:Marco Streccioni
Mix Assistant:Ilian Apostolov
Service:Sud Ovest Records Srl
Orchestra on-line recording studio:新奇鹿錄音室 Saturday studio
On-line recording engineer:Randy Wei
Ocarina recorded by Leonard Fong @Horus Studios Singapore
Mixed by Leonard Fong & Ricky Ho @Horus Studios Singapore
Mastering:John Greenham
音樂製作公司:天涯音樂工作室 Tian Ya Music Productions
MV 製作團隊
導演 Director:陳珊妮
副導演 Assistant Director:談宗藩
製片 Producer:吳容宸
攝影師 D.O.P:張誌騰
美術 Art Designer:梁碩麟
剪接 Editor:陳珊妮
選角 Casting:陳靜媚
造型 Costume:林芷妤
燈光師 Gaffer:李佳翰&TEAM
場景協調 Location Assistant:李宗勳、蔡宜棼
執行美術 Art Assistant:陳冠霓
美術助理 Art Assistant:李曉翠
選角助理 Casting Assistant:陳冠綺、陳鈺萱
攝影大助 First Assistant Camera:胡晉瑋
妝髮 Make up & Hair style:洪丌涵、蔡秉珊
現場製片組 Production Support:郝翊展、王琦凱、黃小綺
防疫組 Protect Taiwan:鍾佳瑩、何劼穎
美術協力:鄭子棋、簡承德、廖家辰、李宜臻、黃瑄、張維展
演員 Extra:
街頭藝人 - 楊鈞富
外送員 - 陸子刊
隔離者 - 許毓庭
洗手的人 - 陳冠綺
畫圖的孩童 - 張玉涵
母親 - 劉怡君
嬰兒 - 程日均
街友 - 江忠明
啜泣的旅館員工 - 高以柔
在淋浴間大哭的人:陳彥嘉
霸凌者 - 許順誠、彭星諳、長井優治
被霸凌者 - 張凱喆
繭居族 - 樓一安
翻牆學生 - 林立元、晨加昱、龔健朗
幫忙的路人 - 蔡宜真、陳育萱、李宗勳
摔車傷者 - 唐榮允
病患 - 薛齡高
妻子 - 曾彩雯
住院醫生 - 黃紹宇
護理師 - 林書瑜
護理長 - 曲天尚
夫妻 - 李旻洵、河淵真也
寵物 - 赤柴
攝影器材 Camera Equipment:妄想機攝影器材
燈光器材 Light Equipment:鉦鶴影業
交通Transportation:廖桑車隊
調光 Colorist / 後期 Post Production:談宗藩
合成 Compositor:QFX
攝影協力:施郡欽
特別感謝:LINION is not Linion巡迴演唱會台北場
藝人工作團隊
藝人經紀公司:水晶共振股份有限公司 Crystal Resonance Co., Ltd.
藝人經紀:連秋雲 Apple Lien
企劃:楊駿章 Eloi Yang, 周世啟 Cheer Chou
服装造型:方綺倫 Chi Lun Fang
造型助理:楊孟築 Meng Chu Yang
化妝:陳俐伶 Venny Chen @Diva Beauty
髮型:Sydni Liu @Zoom Hairstyling
影像側拍:張皓評 Marcus Chang
平面側拍攝影師:黃義文 Evan Huang
* 本片於拍攝期間均遵循中央疫情指揮中心於5月15日發布之三級警戒的九大防疫指引
art in taipei 在 Tracy L. 紙上旅行 Youtube 的最佳解答
#文具控開箱 #文具大賞 #開箱 #文具控
草莓蛋糕鐵盒目前完售
巧克力鐵盒預購網址 shorturl.at/mvEQ9
#2021臺灣文博會 #文博會 #OURS森林好朋友 #戰利品開箱
――――― 創作者資訊 ―――――
OURS森林好朋友
郭漢克 https://www.instagram.com/hanksdiary/
Koopa Lin https://www.instagram.com/bearkoopa/
東維工業
Instagram https://www.instagram.com/danweiindustry/
Website https://www.danweiindustry.com/
✓ 抽獎辦法文字版
(沒有在標題打上抽獎,把獎品留給有乖乖看完的你們哈
讓你們提升中獎率 不錯吧~)
① 訂閱我的Youtube頻道+開啟小鈴鐺 /
Instagram也順便追蹤一下啦 想趕快破萬有上滑功能的女子
https://www.instagram.com/_tracysjournal_
② 在影片下方留言跟我分享你的戰利品或是想看什麼分享之類的
這樣就可以啦 很簡單吧!
截止日期 5/22 23:59
會在隔天抽出中獎者唷!
將獲得巧克力鐵盒中的素材乙份
中獎將會公佈在Youtube社群&留言處
剪輯軟體 / editing tool: Premiere Pro
-----------------------------------------------
Hello! I am Tracy!
入坑大概七八年!喜歡玩文具、寫手帳、拼貼、玩封蠟。
2021年服役手帳: 寄思&Traveler's Notebook
(之前也使用過Midori A5, 星巴克手帳, Hobonichi A5 / A6)
最近開始勇敢地讓興趣成為工作,持續努力中:)
〃合作邀約 tracyliao0@gmail.com
〃Instagram: @_tracysjournal_
https://www.instagram.com/_tracysjournal_
〃Shopp 紙上旅行 (之後會有網頁)
https://shopee.tw/tracyliao0
⌲ 更多影片
文具買到破萬!?開箱2021臺灣文博會的戰利品 (上集)
https://youtu.be/un6xrJv_0AY
2021臺灣文博會全攻略: 必買必逛品牌 花錢路線大公開| 扭蛋牆、滿額贈禮、文博限定 |CREATIVE EXPO TAIWAN
https://youtu.be/Ns3Azgiv3ZQ
2021臺灣文博會: 文具控帶你一起逛松菸!|CREATIVE EXPO TAIWAN
https://youtu.be/qN5w1g6oj50
Vlog!2021臺灣文博會的一點點紀錄、與文具手帳好朋友們的番外篇!https://www.youtube.com/watch?v=_CmsrIZBpe0&t=160s
tracysjournal x @taylorlmw #你我手帳聚會 一點點記錄 呷滴 JiaDee.|Journal Meeting in Taipei
https://youtu.be/uXIzc4euG_I
art in taipei 在 ART TAIPEI 台北國際藝術博覽會- Home | Facebook 的推薦與評價
ART TAIPEI 2021台北國際藝術博覽會於10月25日圓滿閉幕,今年與文化部展開更大規模的合作,盛大推出「時尚藝術跨界特區」,展現台灣在時尚與藝術兩個層面的實力以及兩者 ... ... <看更多>