相信各位朋友都知道,史丹福除了喜歡血液學外,亦對數學非常有興趣。最近有朋友給我看了一篇有趣的文章,文章刊登在《Bulletin of Mathematical Biology》期刊中。文章的作者為裂口型紅細胞(stomatocytes)與鋸齒狀紅血球(echinocytes)兩種異常的紅血球建立了數學模型,嘗試讓我們更了解它們的結構。當中更涉及到雅可比橢圓函數(Jacobi elliptical function)等高等數學,非常有趣。
裂口型紅細胞是中央有裂縫的紅血球,頗像張開的口。它們可以在先天性裂口型紅細胞增多症(hereditary stomatocytosis)或東南亞卵圓形紅細胞增多症(Southeast Asian ovalocytosis)的病人中找到。至於鋸齒狀紅血球則外圍有如針狀的凸起,凸起的程度小且多,並在細胞膜上均勻分布。這種細胞常在腎功能衰退的病人中出現,但有時候則純粹是抽血瓶使用EDTA抗凝血劑引起的現象,可以在完全正常的血液中出現。
利用數學方法來研究紅血球形狀這方法非常新穎有趣,也不禁令我想起讀大學時期的老師黎青龍教授的名言--No knowledge is useless。數學看似抽象且「離地」,與日常生活相距遙遠,有人甚至覺得數學是「沒有用」的學問。但其實只要用得其所,數學的應用空間其實很大,就連紅血球形狀這樣的問題都有用得到數學的地方。
有興趣的朋友可參考以下文章:
https://www.researchgate.net/publication/221710602_Mathematical_models_of_naturally_morphed_human_erythrocytes_stomatocytes_and_echinocytes
同時也有3部Youtube影片,追蹤數超過3萬的網紅#ミニマリストライフ,也在其Youtube影片中提到,https://amzn.to/2GGERY3 ミニマリストやシンプルライフに代表される少ない物で生活すると言う知恵は今に始まったことではありません。私が見つけたネタで一番古い物はコナンドイルの『緋色の研究』です。あの、シャーロックホームズとワトソン博士が出会う話です。緋色の習作(Amazonアソシ...
「useless knowledge」的推薦目錄:
- 關於useless knowledge 在 史丹福狂想曲 Facebook 的最佳解答
- 關於useless knowledge 在 偽文女生英國札記 Hong Kong Girl in UK Facebook 的精選貼文
- 關於useless knowledge 在 Nowhere Boys Facebook 的最讚貼文
- 關於useless knowledge 在 #ミニマリストライフ Youtube 的最讚貼文
- 關於useless knowledge 在 棋樂玩文具 Youtube 的精選貼文
- 關於useless knowledge 在 bubzbeauty Youtube 的最讚貼文
- 關於useless knowledge 在 Top 10 useless knowledge ideas and inspiration 的評價
- 關於useless knowledge 在 The Usefulness of Useless Knowledge - Robbert Dijkgraaf 的評價
- 關於useless knowledge 在 Encyclopedia of Useless Facts on Unbelievable Human ... 的評價
useless knowledge 在 偽文女生英國札記 Hong Kong Girl in UK Facebook 的精選貼文
從英鎊學歷史:紙鈔上的名人(下)
上集提過在英格蘭流通的紙幣只有四種面值,每款背面皆印有各個範疇的著名人物,£5與£10的代表就分別是政治家邱吉爾(Sir Winston Churchill)和女作家珍·奧斯汀(Jane Austen)。
接下來要介紹的是經濟學之父──亞當·史密斯(Adam Smith 1723-1790),他出現在紫色的£20紙鈔背面,肖像旁寫上了“The division of labour in pin manufacturing: (and the great increase in the quantity of work that results)”字句。他最為人所知的著作《國富論》奠定了經濟學的基礎,現代社會的自由貿易、勞動分工等概念也是源自這本書呢。
去年二月,英格蘭銀行發行了新的£20紫色塑質鈔票,主角換上了浪漫主義畫家威廉·泰納(J.M.W. Turner 1775-1851),他擅長以油彩、水彩繪畫風景畫,語錄“Light is therefore colour”便帶出了他作畫時對光線與色彩的靈活運用。仔細一看,泰納的自畫像背後亦展示著他的另一幅作品《The Fighting Temeraire》──夕陽下,一艘曾經擊敗拿破崙軍隊的退役戰艦無畏號,正被前方的蒸氣船拖拉到某處解體。這幅鉅作更曾在全民投票中,贏得「英國最偉大畫作」的第一位!
以上兩款£20鈔票目前仍然在市面上並存、流通,但在交接時期完結後,就只能汰舊換新了。
£50的紅色鈔票較為特別,除了擁有最大面值與面積,更有兩位相關的人物同時「鎊上有名」,分別是發明家詹姆斯·瓦特 (James Watt 1736-1819)和企業家馬修·博爾頓 (Matthew Boulton 1728-1809)。前者表示“I can think of nothing else but this machine”,後者和應“I sell here, Sir, what all the world desires to have-POWER”,二人合力將蒸氣機改良並運用到工業上,解決了許多機械操作的動力問題,大大加速了工業革命的進程。雖然我的物理學知識已所剩無幾,但依然記得功率(Power)的計算公式,而它的單位──瓦特(Watt)就是以詹姆斯·瓦特的名字命名的。
再過一個月,新一款£50紙鈔又會面世,這次的重點人物會是誰?假若你有看電影《Imitation Game》的話,應該會猜到哪位角色能夠擔此重任。要介紹他的悲慘身世與傳奇故事,或許等我遲些再另闢篇幅吧。
沒想過一紙鈔票也可以是一頁歷史書,現在多了點空餘時間與閒情逸致,才留意到更多生活上的細節與本質。如果有人問,認識這些人物與故事有什麼實際用途,我只能回答一句,No knowledge is useless,這是從前醫學課程教會我的事。
useless knowledge 在 Nowhere Boys Facebook 的最讚貼文
感謝 The Underground HK 舉辦野豬音樂節, 好耐無出show, 上到台嘅感覺真係返晒嚟, 仲要係對住中環摩天輪嘅舞台! 多謝Angus Leung幫我地記錄低🤘
希望盡快可以再同大家見面🥺
另外附上Underground網頁裏面Cyril Ma寫嘅show review, 多謝你, 我哋睇到好感動!
An Underground show is special because you get new bands, veteran bands, English bands, French bands, marching bands (we did have one) and of course good old fashioned Cantopop bands. But that’s not what Nowhere Boys is. They’re Cantopop, they use ‘old’ music (we’ll get to that), but they’re not old fashioned.
What first struck me was the violin. Standing in the corner was keyboardist Fisher Kan who decided to whip out a violin for their first song 天外飛仙 (Little Fairy). In their musical video, the band members dress up in classical Chinese outfits and do Kung-fu outside Yau Ma Tei Tin Hau temple, and rock-out next to the Star Ferry pier. They didn’t show up in costume but the whimsical, yet hardcore vibe was just as present. The violin was a little quiet, it could have been the mics, or it could have been their placement, but it would have been great to hear it more.
The second song 狂想曲 (Rhapsody) gave more surprises yet. Released in 2015 near the beginning of their career, the song is an eclectic mix of hard rock, Baroque piano, choir music, rap and more. Nowhere Boys is a band which excels in both recorded and live forms; they understand the difference between the two media and artistically transform themselves depending on what their stage is. In the Rhapsody music video, the band members don different outfits showing the many sides of the band, someone’s the Joker, someone’s a cop, they’re in an old timey Hong Kong style barbershop – then everyone changes roles. The chorale section has very strong Queen vibes and seems to reference Bohemian Rhapsody. For such a chaotic video, the performance is actually incredibly tight but not overwhelming. On stage, however, they change completely. The whole performance is a musical whirlwind. The hard rock starts, pinning you to your seat. Then the baroque piano solo comes in – in the video, it’s underscored by black and white visuals – here the whole band stops and points synchronized at the pianist to great applause. The performance is intense; they’re jumping around the stage yelling into mics but then comes the chorale. Everyone stops and sings in perfect acapella harmony despite having just run a marathon.
There’s something to be said for a Cantopop band incorporating so much classic rock, pop and classical music into their performances. Hong Kong is a city where almost everyone has a Grade 8 in musical performance, but becoming a musician is not a career most people will consider. It’s unrealistic, useless, for a hobby only. Our professional choirs and opera groups are performed in by amazing award-winning singers who are actually bankers and doctors. This means that just in terms of classical music knowledge, Hong Kong really is world class – much of local slang actually comes from musical terminology – but it’s ignored. Nowhere Boys whether they know it or not, is bridging that gap. As a rock Cantopop group, they excel perfectly with creative lyrics, great stage presence and top-notch performance, but more than that, they encompass the musical soul of Hong Kong, telling those that play classical music that the pop world does have a space for them and simultaneously letting popular music fans know that the classical side also has a place. Their creativity and performance style weren’t just for a good show, it was inspirational. At least it was to me – a classically trained musician writing rock show reviews.
– Cyril Ma
#UndergroundHK #NowhereBoysHK #WildBoarFestival #野豬音樂節
useless knowledge 在 #ミニマリストライフ Youtube 的最讚貼文
https://amzn.to/2GGERY3
ミニマリストやシンプルライフに代表される少ない物で生活すると言う知恵は今に始まったことではありません。私が見つけたネタで一番古い物はコナンドイルの『緋色の研究』です。あの、シャーロックホームズとワトソン博士が出会う話です。緋色の習作(Amazonアソシエイトプログラムを利用しています)
https://www.instagram.com/p/B0WFSnWjvVS/
Instagramやっています
https://itunes.apple.com/podcast/id999164868
Podcastもやっています
https://youtube.com/c/jiheiorg/
チャンネル登録よろしくお願いします
誰も考えない切り口でシンプルな生き方を提案します。物を軽く少なくする「ミニマリスト」「シンプルライフ」の知恵を応用した動画を公開中。
This movie has Japanese caption for learn Japanese.
A Study in Scarlet Arthur Conan Doyle
CHAPTER II
THE SCIENCE OF DEDUCTION
"You appear to be astonished," he said, smiling at my expression of surprise. "Now that I do know it I shall do my best to forget it."
"To forget it!"
"You see," he explained, "I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose. A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things, so that he has a difficulty in laying his hands upon it. Now the skilful workman is very careful indeed as to what he takes into his brain attic. He will have nothing but the tools which may help him in doing his work, but of these he has a large assortment, and all in the most perfect order. It is a mistake to think that that little room has elastic walls and can distend to any extent. Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones."
"But the Solar System!" I protested.
"What the deuce is it to me?" he interrupted impatiently; "you say that we go round the sun. If we went round the moon it would not make a pennyworth of difference to me or to my work."
I was on the point of asking him what that work might be, but something in his manner showed me that the question would be an unwelcome one. I pondered over our short conversation, however, and endeavoured to draw my deductions from it. He said that he would acquire no knowledge which did not bear upon his object. Therefore all the knowledge which he possessed was such as would be useful to him; I enumerated in my own mind all the various points upon which he had shown me that he was exceptionally well-informed. I even took a pencil and jotted them down. I could not help smiling at the document when I had completed it. It ran in this way:—
https://www.youtube.com/watch?list=UURwqTcUh7jMWqFjSYH3JHow&v=sf6JWWxvFHM
#Organ_Life #オルガンライフ
ミニマリストやシンプルライフに代表される少ない物で生活すると言う知恵は今に始まったことではありません。私が見つけたネタで一番古い物はコナンドイルの『緋色の研究』です。あの、シャーロックホームズとワトソン博士が出会う話です。緋色の習作
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useless knowledge 在 棋樂玩文具 Youtube 的精選貼文
本集使用的麥克筆:
日本 內田 UCHIDA MARVY T8 雙頭麥克筆
日本 COPIC CIAO 36B 麥克筆
韓國 新韓 SHINHAN Touch麥克筆
Sizzix Markers
---
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useless knowledge 在 bubzbeauty Youtube 的最讚貼文
[Read Me]
Update: My heart goes out to everybody affected by the Earthquake in Japan. We may feel useless right now but we can pray for them.
Hey everybody ^.^
Tsubasa Masuwaka's makeup is probably one of the most requested looks I get. I promised a Tsubasa Masuwaka inspired tutorial months ago so I apologise about the delay guys but here it is ^_^
Tsubasa is a popular Japanese magazine popteen model famous for her long blonde hair and gyaru makeup.
Her entire face remains neutral (not much colour). Her makeup is all about her super matte face, bronze eyes with super long eyelashes, pale pink lips and light pink cheeks. While her eyes are kept toned down- they still really stand out thanks to her eyeliner and lashes (and ofc circle lenses).
Japanese gyaru makeup requires quite a lot of makeup. I could barely recognise myself after the makeup and wig. I have to say I was pretty amazed because I felt like a life size doll. Amazeballs!
This is definitely not something I would wear everyday but I definitely respect the girlies that rock this makeup approach. When I was in Japan, so many girls wore their makeup like this for everyday and it was like a city full of dolls. I was quite fascinated!
Makeup doesn't make me beautiful. Confidence, Knowledge, sense of humour and personality is what makes a person beautiful.
Please don't bash people's culture by being judge mental. We should respect other people's choices. As long as they don't hurt other people's feelings, they should be able to celebrate their individuality.
Note: I am not saying I look like Tsubasa. I am not trying to be a Japanese wannabe either. I am just doing a tutorial based on Japanese makeup because I respect all makeup styles and appreciate the art within each style. I enjoy experimenting and makeup is just something I like playing around with. It should be fun =)
Much love,
Bubz x
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useless knowledge 在 The Usefulness of Useless Knowledge - Robbert Dijkgraaf 的推薦與評價
![影片讀取中](/images/youtube.png)
The Usefulness of Useless Knowledge - Robbert Dijkgraaf. 5.3K views · 2 years ago ...more. Institute for Advanced Study. 122K. Subscribe. ... <看更多>
useless knowledge 在 Encyclopedia of Useless Facts on Unbelievable Human ... 的推薦與評價
Encyclopedia of Useless Facts on Unbelievable Human Beings | #BTS's #RM shares about his growth after concluding his first variety show as a ... ... <看更多>
useless knowledge 在 Top 10 useless knowledge ideas and inspiration 的推薦與評價
Discover Pinterest's 10 best ideas and inspiration for Useless knowledge. Get inspired and try out new things. 1. 50 Interesting Facts about Christianity - Fact ... ... <看更多>