「華人戴明學院」是戴明哲學的學習共同體 ,致力於淵博型智識系統的研究、推廣和運用。 The purpose of this blog is to advance the ideas and ideals of W. Edwards Deming.

2015年12月20日 星期日

全台3200台郵局ATM掛點 民眾跳腳


全台3200台郵局ATM掛點 民眾跳腳

2015年12月20日

【李姿慧╱台北報導】中華郵政發生5年來最大規模當機,昨清晨5時郵局全台3200多台ATM全數掛點無法取款,直到昨上午8時才恢復,讓不少民眾上網抱怨「白跑一趟」,未料8時30分287家周六營業的郵局一開門,又發現窗口無法連線作業,只能採人工離線作業,導致民眾等待時間拉長,約到10時40分狀況才排除。

5年來最嚴重

中華郵政說,全台3200多台ATM及網路交易系統,昨清晨5到8時出現異常,導致無法作業和提款,上午8時恢復正常後,上午9時10分到20分又再度出現不穩定,重新開機才排除狀況;另全台287家周六營業的郵局,上午8時30分開門後,窗口人員發現無法連線作業,只能採人工離線作業,雖仍可提存款,但要耗費較長時間,且限定每人領款最多10萬元,直到上午10時40分才恢復正常。
不少民眾在「爆料公社」臉書社團po文抱怨,「剛才白跑一趟」、「剛去領,完全不能領」。
中華郵政說,昨天的狀況初步了解,是主機應用程式出問題,導致作業系統掛掉,至於應用程式為何出問題,已請廠商了解,但坦言近5年未發生如此大規模的當機情況。 

2015年12月18日 星期五

計畫係從小規模實驗開始,......大幹( do )之前,要"小規模試驗" (或preview) 一下,(大手術或)成功之後才"放行"......


 2000
小規模試驗

據報台灣HP科技B2C作業,誤把新加坡幣寫成台幣報價,在網路上認賠數十萬台幣成交量。其實,這應當成開辦費。

不管e不e時代,質量管理的道理不變。Plan-do-study-act循環中,小規模試驗很重要。

《21 世紀的管理挑戰》中對小規模測與漸進式領都有論述:對現實的試驗是研究市場調查,電腦化作對等的最後試金石,所以每個改善或新嘗試,都需要小測試。 (p.102-5)某銀行因不懂得把「新產品」與例行服務分開而失利,又沒在一兩家分行作小規模測試〝分理〞的做法,使公司花了兩年才找出顧客之喜好。


近日收到數封提到 Dr. Deming 的英文資料 不過都是老生常談
近日"猴急的Google Gmail iOS app "讓我想起Dr. Deming 奉勸大家PDSA
do 之前要"小規模試驗"一下 成功之後才"放行"
 在藝術上採試演preview方式

2013.5.11
Helping Glass Slippers and Kinky Boots Shine

By PATRICK HEALY

"Kinky Boots," which had a run in Chicago before coming to Broadway, and "Rodgers & Hammerstein's Cinderella," with no out-of-town run, both got major surgery because of surveys of preview audiences.

猴急
焦急。如:「你別這麼猴急,等水開了再喝也不遲!」亦作「喉急」。

Google, Why Don't You Hang On To That Gmail App For A While?
TechCrunch
Learn More By now you're probably well aware that Google released their long-awaited Gmail iOS app today, only to unceremoniously yank it from the App Store when people pointed out that it didn't really work. Google offered a mea culpa by stating that ...
Google, Why Don't You Hang On To That Gmail App For A While?



*****

胡適的留學日記當然提過美國總統Theodore Roosevelt (1858–1919)。

中文界常稱Theodore Roosevelt為老羅思福總統,而胡適任中國駐美大使時的F.D.R. 為小羅斯福總統。他們當然不是"父子",這只是中文的方便稱呼法。

 Theodore Roosevelt 有許多名言。
譬如說,蔣夢麟先生在1959.3.20 致劉真(【中國文哲研究通訊】第2卷第1期,1992.3。p.160):......行遠自邇,故農復會多數計畫係從小規模實驗開始,成效既著,步驟已定,擴大推廣,自容易矣。......余最佩服老羅斯福總統的下面幾句話:


Theodore Roosevelt was irresistible in his charisma and leadership, and had a solid grounding in reality. He told his son, Kermit:
tr1.png

“All my life in politics I have striven to make the necessary working compromise between the ideal and the practical. If a man does not have an ideal and try to live up to it then he becomes a mean, base and sordid creature, no matter how successful he is. If, on the other hand, he does not work practically, with the knowledge that he is in the world of actual men and must get results, he becomes a worthless head-in-the-air creature, a nuisance to himself and everybody else” (“Theodore Roosevelt; his life reviewed in pictures”, 1958).


TechCrunch
Learn More By now you're probably well aware that Google released their long-awaited Gmail iOS app today, only to unceremoniously yank it from the App Store when people pointed out that it didn't really work. Google offered a mea culpa by stating that ...

2015年12月11日 星期五

默(或梅)克爾 Angela Merkel 將"fear""恐懼"的討論範圍提高到國家層次。


默(或梅)克爾 Angela Merkel 將"fear"的討論範圍提高到國家層次。
Dr. W. Edwards Deming 當時談的fear,多屬公司/組織內的個人之"恐懼"。相反詞是"信任"與"自信"。



默(或梅)克爾 Angela Merkel 《時代Time》周刊年度風雲人物


「恐懼滋養出的社會  沒有未來」
面對各界質疑她的難民政策,梅克爾曾言:「多年來,我們聽著那些因戰爭和恐怖主義陷入分裂混亂的國家,我們在電視上看著他們的消息,但我們未曾真正了解發生在敘利亞阿勒坡或是伊拉克摩蘇爾的事件,其實會衝擊到我們的國家。現在,我們正面對(這些衝擊)。」

2015年9月3日,梅克爾被一位婦人問到怎麼樣讓湧入大量難民的德國「不被伊斯蘭化」時,梅克爾回答說:
「恐懼從來都不是最佳的指導者,不論今天尋求指引的是一個人還是一個國家。從懼怕中成型的文化與社會,絕不可能有未來。」



Time magazine has named German chancellor Angela Merkel its Person of the Year, citing her resolve in leading Europe through this summer’s Greek debt crisis, and her encouragement of other countries to open their borders to migrants and refugees.


Angela Merkel named Time's first female Person of the Year since 1986
German chancellor awarded honor for leading Europe through debt crisis…
THEGUARDIAN.COM|由 JESSICA GLENZA 上傳
 默克爾當選《時代》周刊年度風雲人物
德國總理默克爾被美國《時代》雜誌評選為年度風雲人物,成為30年來第一個獲此頭銜的女性。主辦刊物認為,她在諸多重大危機處理上的顯示出領導風範。

(德國之聲中文網)《時代》周刊認為,默克爾在從敘利亞難民問題到希臘債務危機等多個重大事件的處理上顯示了領導作用。
"只有在人們不願服從的時候,才是對領導人的真正考驗。"《時代》周刊編輯吉布斯(Nancy Gibbs)在周三發表的一篇聲明中寫道。
"因為她比其他政治家更敢於向她國民提出要求,因為她堅定地反對暴政、權術,在一個缺乏道德榜樣的世界樹立了牢固的道德風範,為此安格拉·默克爾成為《時代》的年度風雲人物。"
"默克爾的言行中透露出的另一種價值觀--人性、善意、寬容--這些向世人顯示,德國的強大是可以用來拯救而不是摧毀的。作為一個領導人她擺脫了自己舊有的、帶來折磨的民族認同感,這樣的過程我們很少能看到。"
與默克爾一同被提名的其他7名候選人包括美國共和黨總統競選人特朗普(Donald Trump)、Uber總裁卡蘭尼克(Travis Kalanick)、伊朗總統魯哈尼(Hassan Rohani)等。自封為"伊斯蘭國哈里發"的恐怖組織領導人巴格達蒂( Abu Bakr al-Bagdadi)在風雲人物的排行榜上排名第二,排在第三位的是美國黑人民權運動"黑人的生命也是命" (Black Lives Matter)。
自1927年以來,《時代》周刊每年都會評選當年世界時事範圍內具有影響力的人物或團體。去年獲此殊榮的是抗擊非洲埃博拉疫情的醫護工作者。2013年,羅馬天主教宗方濟各當選年度風雲人物。默克爾成為30年來第一個獲選年度風雲人物的女性, 她也是1970年勃蘭特總理之後首度獲得這一稱號的德國人。


Angela Merkel Lectures Germans About Being Good Christians



Transcript:

00:00 Madame Chancellor, thank you for giving me the opportunity to speak.
00:06 A minute ago you were mentioning the responsibility we all have,
00:10 in terms of how we should all deal with all this refugee chaos.
00:13 But one of our responsibilities is also to protect our own citizens in Europe,
00:19 and I am speaking especially about refugees from Syria and similar countries from where now
00:24 even more people with an Islamic background come into our country.
00:29 And I believe what the gentleman addressed earlier is legitimate, that there is a great fear
00:35 here in Europe because Islamization seems to proceed and grow stronger.
00:42 So I am asking you, how do you want to protect Europe, and in that regard,
00:46 how do you propose to protect our own culture from this?
00:50 Uh… I think, first and foremost, that Islamism and Islamic terror are unfortunately
00:57 a phenomenon operating predominantly in Syria and Libya and in Northern Iraq,
01:04 and to which, unfortunately, the European Union has contributed a myriad of fighters as well.
01:10 And therefore we can’t just sit here and say this is a phenomenon that has nothing to do with us,
01:15 because those are people, sometimes very young people, who grew up
01:19 in our countries, and this is where we bear also a responsibility.
01:25 Secondly… uh… fear has never been a good adviser, neither in our personal lives nor in our society.
01:34 Cultures and societies that are shaped by fear, will without doubt not get a grip on the future.
01:40 And third, of course we have this debate that a lot of Muslims also have,
01:46 in which we debate whether Islam even belongs to Germany or not.
01:50 But I’m finding that when we have four million Muslims in this country, it’s really not debatable
01:54 whether Muslims belong to Germany but Islam doesn’t, or whether Islam also belongs to Germany.
02:01 I see there are these worries, but I have to say to that, we all have these chances and all these liberties
02:13 to practice our own religion as well, insofar as we are practicing it and believe in it.
02:17 So if I am lacking in something in that, I am not suggesting that someone who practices Islam is at fault for that.
02:24 We should have the courage as Christians to enter a dialogue then,
02:32 and while we are talking about tradition, maybe please go to church every once in a while,
02:37 or become a tad more versed in the Bible and maybe be able to just explain a painting in the church,
02:44 or at least be able to explain what the meaning of Pentecost is. So there I just have to say
02:49 that a lot of people’s knowledge about the Christian Occident leaves a lot to be desired.
02:53 But then to come back and complain about how Muslims know more about the Koran
02:57 than they do about the bible, I find that very curious.
03:00 Maybe this debate will make us want to go back, and encourage us to gain more knowledge about our roots.
03:08 So far I find this debate extremely defensively-minded. Sure one has to prepare against the terrorist danger,
03:14 but let us all also not forget just how rich European history is of dramatic and gruesome conflict and war.
03:20 We should be really careful when we complain if somewhere else something bad is happening.
03:26 Sure, we have to stand up against that, but we have absolutely no ground to stand on,
03:31 to show haughty arrogance towards others, and I have to say that as the Chancellor of Germany.

“A Picture Is Worth A Thousand Data Points”;新德里證實日本承建印度國內首條高鐵

 
This Week's Podcast: 

Lynda Finn, President of Statistical Insight, LLC and Facilitator for The Deming Institute
 
“A Picture Is Worth A
Thousand Data Points”
 
 
 
Article Image
This week's podcast features the first episode of our "Knowledge In Variation Series" with Lynda Finn, President of Statistical Insight and facilitator of The Deming Institute's 2.5 Day Seminar.  Lynda discusses the importance of moving from spreadsheets to plotting data, and the common mistakes that organizations make if they aren't charting their data.
 
Lynda's Deming journey began when, shortly out of graduate school, she met Dr. Deming at one of his public seminars.  From that point on she has been helping spread his ideas through her own consulting company and her work with The Deming Institute.
 
She starts by sharing some of the hardest things for people to grasp about the Deming philosophy.  Though it varies, Lynda finds it's most difficult when Deming's ideas don't align with the practices people feel have contributed their success.
 
The episode centers on why organizations should be plotting their data on charts rather than just using spreadsheets.  She feels that if the number is important enough to have on a table, then it should be important enough to see it in its proper context.
 
Lynda outlines the mistakes people make if they aren't charting their data, starting with not caring enough to see what the data is telling them. The most important reason for charting data is so that everyone sees the same thing and can come to a common conclusion about what's happening and how to improve.  How can you "see" what the data's telling you if you don't make a picture of it?
 
The Deming Podcast Moderator is Tripp Babbitt, Service Design Architect, The 95 Method. 
 
Upcoming Deming Institute Events:
          Tipp City, OH, February 9-11, 2016
 
  • Deming in Education Two-Day Introductory Workshop
          Seattle, WA, March 11-12, 2016

  • Deming in Education Four-Day Quality Learning Seminar
          Seattle, WA, July 19-22, 2016
 
  • Deming Institute Annual Fall Conference
          Michigan State University, September 30-October 2, 2016

  • 2nd Annual Deming in Education Conference
         Atlanta, GA, Fall 2016 (date to be determined)


This week's podcast features the first episode of our "Knowledge In Variation Series" with Lynda…
PODCAST.DEMING.ORG




*****
這案子固然很複雜,不過它跟近十餘年,日本科技連JUSE的Deming Award在印度的風行之現象,可能有關連。

新德里證實日本承建印度國內首條高鐵

印度政府證實,日本將承建印度國內首條高速鐵路。這是印度最大的外資投資基建項目之一,總價值達到147億美元。
Bildergalerie Hochgeschwindigkeitszüge Japan Shinkansen-Baureihe E2
(德國之聲中文網)本週五,日本首相安倍晉三將開始對印度的訪問。安倍到訪前,印度官方已經對外公佈了這一高鐵項目。此前,中國鐵路機構也曾參與過印度國內高鐵項目的競標。
這條高鐵線路將連接孟買和艾哈邁達巴德(Ahmedab​​ad)。艾哈邁達巴德是印度總理莫迪家鄉古吉拉特邦的首府。日本方面表示,這一項目所需費用的80%都將有日本以貸款的形式承擔,貸款利率低於一個百分點。
路透社引述印度政府圈內人士的話說:"這個項目已經定了。"
印度總理辦公室一名工作人員也證實了這一決定。這名工作人員說,還有一些細節需要等安倍首相抵達印度後磋商解決。
他說:"屆時我們會公佈一份聲明。"接受采訪的政府人員都拒絕透露姓名。
Indien Eisenbahn Passagiere
印度在鐵路建設方面需求巨大
莫迪和安倍為印日兩國打造出緊密的聯繫,兩國間為了應對中國在亞洲地區勢力的擴大而希望在經濟和國防等不同方面擴大聯絡。
按照日方提出的工程方案,連接孟買和艾哈邁達巴德的高鐵線路全長505公里。目前這段線路需要的行車時間長達7、8個小時,高鐵的投入可以將旅途時間縮短2個小時。
今年9月,中國鐵路總公司獲准研究孟買至欽奈(Chennai)高鐵線路的可行性。印度國家安全機構對於中國投資印度電信、鐵路等基礎設施領域心存戒備。但中國鐵路總公司最終還是獲得了研究許可。
法國和西班牙的公司也準備對在印度國內修建高鐵進行研究。
印度政府高級政策顧問帕納加里亞(Arvind Panagariya)領導的一個小組認為,日本"新幹線"從投入使用至今從未發生過事故,所以建議政府採納日本的投資計劃。
印度在鐵路建設方面需求巨大,外國鐵路公司紛紛前來兜售自己的技術,並且希望能搶在對手前面。
不過印度政府還沒有對如何支付工程費用的問題上做出表態。

DW.CO​​M

2015年12月2日 星期三

On the acceptance of 'pseudo-profound bulls***'


http://www.independent.co.uk/news/science/scientists-find-a-link-between-low-intelligence-and-acceptance-of-pseudo-profound-bulls-a6757731.html


Scientists find a link between low intelligence and acceptance of 'pseudo-profound bulls***'



A new scientific study has found that those who are receptive to pseudo-profound, intellectual-sounding 'bulls***' are less intelligent, less reflective, and more likely to be believe in conspiracy theories, the paranormal and alternative medicine.
PhD candidate Gordon Pennycook and a team of researchers from the University of Waterloo in Ontario, Canada, tested hundreds of particiapants to make the link, detailing their findings in a paper entitled 'On the reception and detection of pseudo-profound bulls***', which mentions the word 'bulls***' exactly 200 times (surely some sort of record).
Defining bulls*** is a tricky task, but Pennycook and his team tried their best in the paper.
As an example, they gave the following 'pseudo-profound' statement: "Hidden meaning transforms unparalleled abstract beauty."
The paper says: "Although this statement may seem to convey some sort of potentially profound meaning, it is merely a collection of buzzwords put together randomly in a sentence that retains syntactic strcuture."
"Bulls***, in contrast to mere nonsense, is something that implies but does not contain adequate meaning or truth."


So Now Everything Is Google's Fault
Washington Post - United States
Now he's back again, this time targeting Google. Thank God the bloggers are here to call bullshit because the journalists, fearing their own looming ...




hc舊文

「二○○四年秋天,日本全國六百家書店一起舉辦了「Comic Essay書展」 …….Comic Essay」顧名思義是漫畫(comic)和散文( essay)的混合創作,………輕鬆幽默的劇情加上或爆笑或溫馨的漫畫表現,Comic Essay類型讀物在日本獲得許多女性讀者的支持。」(〈日本:閱讀風潮〉陳孟姝『「 Comic Essay」成為新閱讀趨勢 』)上文中comic,或許以後可以再談。「散文( essay)」,「多少」算是美麗的錯誤了解。

(
其實,你參觀fortune.com雙周刊,就有篇所謂 photo essay--
HEWLETT-PACKARD: ONLINE EXCLUSIVE What FORTUNE Said About Carly 
It has been just over six years since Carleton S. Fiorina, now 50, burst upon the national stage and we will acknowledge straight out that FORTUNE played a role in putting her name in lights. In 1998, FORTUNE ranked her No. 1 on its first-ever ranking of the 50 most powerful women executives in the 
U.S., and that was the end of her quasi-obscurity. In the pages that follow, see highlights from our coverage…)
我們查一下線上辭典。我想goo辭典對於essay的解釋大體抓到重點 (英文 from Cambridge Advanced Learner's Dictionary)
━━ n. (文芸上の)小論試論評論随筆試み ((at, in)).━━ essay (ATTEMPT) verb [T] OLD-FASHIONED 此「嘗試」義為本來意思(如胡適的『嘗試集』(詩?)) v. 試みる企てる. to try to do something:The procedure was first essayed in 1923.
essay (WRITING) UK noun [C] (US paper) --
重點:essay可以說是「(專題)小論文」
a short piece of writing on a particular subject, especially one done by students as part of the work for a course:
例:For homework I want you to write an essay on endangered species.
es
sayist   ━━ n. 日本 随筆家.【或許誤譯】a person who writes essays that are published:
a political essayist

****
essay question
:論文式(テスト)問題.。我猜這是「「小問題」之『大哉問』」,最近的例子是美國某名大學出版社將約20 年前某篇討論人們為什麼喜歡/會 說:「bull shit」等等的哲學(「愛智!」)分析。(
bull (NONSENSE) noun [U] INFORMAL
complete nonsense or something that is not true:
Don't give me that bull about not knowing the time


bullshit Show phonetics
exclamationnoun [U] OFFENSIVE
complete nonsense or something that is not true:
Bullshit! He never said that!
He gave me some excuse but it was a load of bullshit.

bullshit Show phonetics
verb [I or T] -tt- OFFENSIVE
to try to persuade or impress someone by saying things that are not true:
You're bullshitting me!
Quit bullshitting, will you!

bullshitter Show phonetics
noun [C] OFFENSIVE

2015年12月1日 星期二

“德國製造”的空氣淨化器到底多靠譜?


問:中國需要過濾"PM2.5"級的空氣淨化器。而製造它的技術和經濟性都可掌握,為什麼中國沒領先產品/品牌?



經濟縱橫

“德國製造”的空氣淨化器到底多靠譜?

在中國各大城市空氣質量不斷惡化,"十面霾伏"逐漸成為"新常態"的情況下,空氣淨化器已經逐漸成為中國民眾家中的必備家電。其中"德國製造"產品在中國市場有著優良的口碑。但仔細觀察,這些"德國貨"其實未必貨真價實。
Symbolbild angeschlagenes deutsches Markenimage
(德國之聲中文網)隨著北京這幾天遭遇罕見霧霾污染,如何在家中濾化PM2.5"自救"再度成為大眾關注的話題。其中,尤其有眾多消費者信賴"德國製造"的質量標準,將德國產品作為購買首選。
翻看一些中國著名的網購網站,會發現許多商家都用"德國製造"、"德國技術"來推銷自己的空氣淨化器。但仔細一看,只能看到很少一些在德國市場上也能夠見到的空氣淨化裝置。其中包括號稱德國製造的"文塔"(Venta)空氣清洗器。中國商家的廣告裡將其稱為"均衡空氣專家",是"歐洲第一淨化器品牌……連續10年蟬聯歐洲淨化器銷售第一的桂冠。"部分商家在產品介紹的網站上貼出了"德國權威報告",指出"文塔"系列產品開機一個小時後,"小於2.5微米的顆粒物自然衰減百分比高達70%左右"。
"文塔"無法過濾PM2.5
China Smog in Peking
空氣過濾器已經成為中國民眾家中的標準家電
然而,德國之聲諮詢德國"文塔"公司德國總部後發現,中國商家的上述表態有明顯誤導傾向,近乎欺騙。德國"文塔"公司技術服務部門的負責人本多夫(Anke Penndorf)表示,"文塔"公司的所有空氣淨化產品都無法過濾空氣中的PM2.5顆粒,該公司產品能夠過濾微粒的最小直徑為10微米,是PM2.5的4倍。本多夫解釋說,因為德國的空氣質量和亞洲國家,特別是中國有很大不同,德國廠商沒有必要為歐洲市場生產能夠過濾PM2.5的空氣淨化設備。"文塔"等德國廠商生產的過濾設備主要針對歐洲大量的花粉或粉塵過敏者。但從技術理論上來說,生產能過濾PM2.5顆粒的產品不是一件難事,而且也能夠讓普通家用消費者能夠承擔得起。但本多夫坦言自己也不知道哪些德國廠商目前正在生產這樣的產品。
要想尋找有關德國廠商,就不得不依靠獨立質量檢測機構或消費者協會的幫助。產品測試基金會(Stiftung Warentest)是德國權威的商品和服務評測機構。該基金會從90年代開始,就沒有推出任何有關空氣淨化裝置的監測對比報告。基金會的發言人告訴德國之聲,原因是近幾十年德國和歐洲的空氣質量沒有過濾浄化的必要。德國的"消費者協會"(Verbraucherzentrale)也表示沒有專人關注空氣過濾產品。
"謎一般"的Roto
所以,在德國要想找到能夠過濾PM2.5 的家用空氣淨化設備,還真不是一件容易的事情。在包括"淘寶"在內的中國網購網站上,除了文塔以外,還有包括"Comedes"和"Roto"在內的"德國品牌"空氣淨化器。
其中Roto公司的產品號稱是"德國工學藝術完美體現",產品設計風格與美國蘋果公司的產品接近。據稱,公司誕生於杜塞爾多夫,創始人是Leo Dieck先生,於2008年在中國建立研發、生產基地。該公司自稱"產品的PM2.5淨化效率在十分鐘後能夠超過99%"。德國之聲試圖找出該公司在德國的地址,並與其技術部門取得聯繫。但調查結果發現,德國本土目前沒有名為"Roto"的空氣淨化器生產商。通過德國人常使用的亞馬遜、E-Bay等大型網購網站也無法搜索到Roto公司的任何產品。
並非高科技
與"Roto"公司不同,在互聯網上確實能夠找到"Comedes"公司的網頁。瀏覽其產品介紹,發現該公司旗下一款型號為"LR130"的產品據稱能過濾室內空氣中99.95%的直徑小於0.3微米的細微顆粒,也就是PM0.3。公司負責人譚胡伯爾(Philipp Thannhuber)向德國之聲透露:能夠過濾PM2.5的空氣淨化器不是什麼高科技產品。不過,由於全球生產相關過濾裝置的廠家只有6到7家,所以空氣淨化器廠商在核心部件上的選擇非常有限。按照現在過濾裝置的生產技術,許多廠商都可以生產出能夠過濾空氣中PM2.5的民用產品。
但這並不意味著這樣的設備能夠"過濾房間中的99%的PM2.5 污染微粒",只能說明設備能夠把經過過濾裝置的空氣中99%以上的PM2.5過濾掉。技術出身的譚胡伯爾解釋說,一個35平米房間的空氣何時才能夠被過濾成符合世界衛生組織的標準,也就是PM2.5顆粒物在24小時內的平均濃度為每立方米25微克,取決於這個房間的取暖、通風等情況。另外,有多少人在房間內,以及房間內空氣原本的污染程度都將嚴重影響空氣過濾裝置的淨化效果。

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