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同時也有94部Youtube影片,追蹤數超過23萬的網紅Sho Fitness,也在其Youtube影片中提到,忙しくて週に1〜2回しかジムに行けない人でも、時短で最大限トレーニング効果を得るための4つのポイントを、Brad Schoenfeld博士の「筋力と筋肥大のための時間効率のよいトレーニングプログラム」を元に解説していきます。 動画内で紹介しているツイート https://twitter.com/B...
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time efficient 在 Taipei Ethereum Meetup Facebook 的最佳解答
📜 [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
time efficient 在 黃心健 Hsin-Chien Huang Facebook 的最佳解答
⭐️#最後倒數把握時間進行島嶼壯遊
⭐️#颱風天就是要島嶼壯遊啊 😎🌀
奧地利林茲電子藝術節進入最後倒數囉!展期將在9/12結束
先進入👉🏻台北/福爾摩沙花園:島嶼壯遊( http://garden2021.metarealitylab.com/ )暢遊吧!
本次展出的「行動啟程 」展區(Action Tour )邀請台灣優秀團隊#台北大數據中心、MINIWIZ 小智研發、Peppercorns 黑川互動媒體藝術 以及Roboenter 樂飛特 ,實踐以設計力與數位資訊的方式,進而改變社會的行動計畫,當中更首度以數位跨界的合作方式,創作出新的行動藝術計畫!此外,「行動啟程 」展區(Action Tour )也受邀登上奧地利林茲電子藝術節官方線上節目Home Delivery,由奧地利電子藝術節總監Chritl Baur親自介紹唷!
片段重點已經幫大家準備好,一鍵播放觀看起來 ⏯ https://www.youtube.com/watch?v=8YVC0mF5vAE&t=177s
🔹🔸
2021 ARS ELECTRONICA FESTIVAL Garden Taipei/ Formosa
2021 奧地利林茲電子藝術節台灣展區「台北/福爾摩沙花園:島嶼壯遊」
展區 ✨ 【行動啟程 】(Action Tour )
To cope with the impact of Covid-19, a scientific and efficient action in the digital world must be taken. The Taipei Urban Intelligence Center has developed a digital system that can quickly respond to the risk landscape, people flow, and medial resources across different parts of Taipei by integrating live streaming and data instantly. It also informs the policies of the government. The digitized action on the ground helps us build a more secured environment.
In the face of the rapid development of the digital world, people immersed in the VR environment seem to ignore the depletion of resources in our reality. As a result, we need to take real actions and devote ourselves to reuse the discarded resources to make an environment of circularity and sustainability through digital technology. MINIWIZ, a start-up company from Taiwan, committed to developing technology for recycling that turns industrial and household wastes into materials with purposes and aesthetics.
During the tour, a new performance art project is inspired by the digital cross-field cooperation for the first time. The Taipei Urban Intelligence Center will join hands with new media artist Chin-Hsiang Hu and the founder of Roboenter Ghung-I Hung, to create a new media artwork “The Weight of Data” by integrating both virtual and physical materials from different domains and sharing data resources.
Finally, it is in fact not the end for “Taiwan Grand Tour.” Instead, the “Action Tour” program unveils the journey to come, constantly connecting the digital world with our society. A link for a time-limited viewing of the details of action plans for this program as well as the joint art project will be available.
為了抵禦疫情的衝擊,我們需要在數位世界中採取科學且有效率的行動,台北大數據中心(Taipei Urban Intelligence Center)即研發了一套數位系統,透過即時的串流連結與數據整合,可以快速的反應台北各個地區的疫情風險趨勢、人流狀況與醫療資源的狀態,也可提供政府作為政策的判斷依據,數位化的實質行動,讓我們可以得到更安全的防護。
在面對數位世界的快速發展之下,沉浸於虛擬環境的我們,似乎忘卻了對於現實世界資源的消耗,因此我們需要真正的採取行動,運用數位科技的方式,重新利用我們廢棄的資源,讓環境可以永久的循環,為我們的環境盡一份心力。而小智研發(MINIWIZ)是一間來自台灣的新創公司,致力於回收材料研發科技,將工業用與家庭用的廢料,透過設計賦予它機能與美感。
而在此展區中,也首度以數位跨界的合作方式,刺激出新的行動藝術計畫,臺北市大數據中心將與新媒體藝術家胡縉祥)、樂飛特公司創辦人洪仲儀合作,進行跨域的虛實整合及數據資源共享,一同創作新媒體藝術作品《The Weight of Data》。
最終,觀者在此並不是「島嶼壯遊」的不是真正的終點,而藉由行動之旅(Action Tour)的展區開啟下一段旅程,數位世界與我們的社會持續串聯。
本展區詳細的行動計劃,與藝術聯名計劃將提供限時觀看的網址連結。
💬線上展覽時間為2021年9月8日至12日!更多精彩內容直接進入官方網站🤩 http://garden2021.metarealitylab.com/
:::::::各展區介紹大全::::::
✔️【食壤計畫】 https://youtu.be/nl80hcdI_jY
✔️【沉浸之旅】https://youtu.be/6TvpTQIYWaw
✔️【動畫之旅】https://youtu.be/6SSXdiKl2oM
✔️【新媒體之旅 】https://youtu.be/movZlI2pPQQ
✔️台北/福爾摩沙花園:島嶼壯遊預告片
https://www.youtube.com/watch?v=opZLSEh_L14
👉🏻奧地利電子藝術節台北/福爾摩沙花園
https://ars.electronica.art/newdigitaldeal/de/formosa-grand-tour/
#奧地利林茲電子藝術節
#arselectronica21 #gardentaipeiformosa
#newdigitaldeal
time efficient 在 Sho Fitness Youtube 的最佳解答
忙しくて週に1〜2回しかジムに行けない人でも、時短で最大限トレーニング効果を得るための4つのポイントを、Brad Schoenfeld博士の「筋力と筋肥大のための時間効率のよいトレーニングプログラム」を元に解説していきます。
動画内で紹介しているツイート
https://twitter.com/BradSchoenfeld/status/1404505511010127873
No Time to Lift? Designing Time‐Efficient Training Programs for Strength and Hypertrophy: A Narrative Review
https://link.springer.com/content/pdf/10.1007/s40279-021-01490-1.pdf
0:00 動画概要
0:49 前提
1:19 セット数・レップ数と種目選択のポイント
3:27 短時間でボリュームを稼ぐテクニック
3:36 スーパーセット
4:31 ドロップセット
5:24 レストポーズ
6:42 ストレッチを省き、w-upで体を温める
8:00 まとめ
販売中のプログラム
▶︎中上級者向け9Weeks筋肥大プログラム
https://note.com/shofitness/n/n21fcc68e60a8
▶︎初心者が効率的に筋肥大するためのプログラム
https://note.com/shofitness/n/n16988a2c0f23
その他のプログラムはこちらから
https://note.com/shofitness/m/m9f765775c51f
【ジム】http://everlift-gym.com/
【アパレル】https://everlift-store.com
【Twitter】https://twitter.com/shoimakoga
【Instagram】https://www.instagram.com/sho_imakoga/
【note】https://note.com/shofitness
*活字派の方はこちらもぜひどうぞ
time efficient 在 CarDebuts Youtube 的最佳解答
ชมสายการผลิต All-New Hyundai Santa Cruz 2022 ฮุนได ซานตาครูซ รถกระบะปิกอัพขนาดเล็ก โครงสร้างแบบ Unibody (Monocoque)
Hyundai Motor Manufacturing Alabama Celebrates Launch of All-New 2022 Santa Cruz
Montgomery, Ala. June 22, 2021 – Hyundai Motor Manufacturing Alabama (HMMA) celebrated the launch of the all-new 2022 Santa Cruz Sport Adventure Vehicle on Tuesday, June 22, 2021. The Santa Cruz joins the Sonata and Elantra sedans and Santa Fe and Tucson SUVs on the Montgomery assembly line. This addition marks the first time HMMA has produced five vehicles at once.
The highly-anticipated Santa Cruz Sport Adventure Vehicle shatters both SUV and truck segments, creating an entirely new vehicle category. The Santa Cruz features a secure, open bed area which includes a lockable tonneau cover and hidden bed storage for diverse gear-carrying flexibility.
“Santa Cruz, with its bold styling, breaks open an all new segment territory, both for Hyundai and the industry as a whole. Open-bed flexibility coupled with closed-cabin security meets the changing everyday needs of its adventure-oriented buyers, while powerful and efficient engines and superb maneuverability ensure it is a pleasure to drive in urban or off-road environments. Our customers will wonder just how they managed before owning one,” said Jose Munoz, president and CEO, Hyundai Motor North America.
HMMA recently completed a plant expansion project to support adding the Santa Cruz to HMMA’s product mix. The addition of the Santa Cruz will further enhance HMMA’s ability to adjust its vehicle production with market demand and stay competitive in the ever-changing automotive market.
“We are excited and honored to be producing Hyundai’s first open bed vehicle for the North American market,” said HMMA President and CEO, Ernie Kim. “The launch of the Santa Cruz is a further testament to the trust Hyundai Motor company puts in HMMA and our Alabama home. I am so proud of our Team Members for accomplishing this achievement while the world is going through such difficult times. We can’t wait for our customers to experience the innovative design and world class quality the Santa Cruz will bring to the table.”
The addition of the Santa Cruz will continue to sustain high-quality jobs at HMMA and throughout its supplier base.
The 2022 Hyundai Santa Cruz will begin arriving in U.S. dealerships later this summer.
ติดตามช่องของเราทาง Facebook ได้ที่ https://www.facebook.com/CarDebuts-891205251089964
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time efficient 在 Ray Mak Youtube 的最佳貼文
Microgreens have always been a passion for me because I love eating them and I eat them all the time. What's more efficient that growing them on my own? And since I grow them, I'm going to show you how I grow them so you can grow them too. They are extremely wonderful super nutritious powerhouses.
This video will guide from from microgreen seeds, all the way to your tummy. In this example I've used Sunflower Microgreens.
Intro by Daniel Such
https://www.youtube.com/channel/UCRy-JftlpRvSP49jH81ZTBQ
(As you guys know, I've exhausted my Sub Count trying to support small YouTubers. So I'm using Intros and YouTube Community Postings to help move your channels forward. Hope you guys can appreciate that)
#microgreens #howtogrow #raymak
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