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Thu Jul 20 00:11:49 HKT 2017
From /weblog/learning
In other words, both groups were stressed, but one group channeled the stress as a performance challenge; the other group as a performance threat. It wasn't the stress of a difficult test that caused distress--everyone felt that. It was how subjects interpreted their stress. - http://traderfeed.blogspot.com.au[..]mbracing-stress-minimizing-distress.html http://nautil.us/blog/do-you-actually-need-more-stress Calming when conflict - https://hbr.org/2015/12/calming-your-brain-during-conflict https://aeon.co[..]ks-in-the-human-body-to-make-or-break-us
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Thu Jul 13 15:54:32 HKT 2017
From /weblog/misc
Short tips of regex - http://immike.net[..]know-to-become-a-regular-expression-pro/ Let regex more readable - http://martinfowler.com/bliki/ComposedRegex.html Useful Regular regression Match username - /^[a-zA-Z0-9_]{3,16}$/ Matching an XHTML/XML tag - { ]*>(.*?)}
Matching an XHTML/XML tag with a certain attribute value (e.g. class or tag) - {]*attribute\\s*=\\s*(["'])value\\\\1[^>]*>(.*?)}
Matching a URL - (a very long one... refer to article...)
http://immike.net[..]ssions-every-web-programmer-should-know/
The danger of bad regex - http://andreas.haufler.info[..]o-kill-java-with-regular-expression.html http://www.regular-expressions.info/catastrophic.html http://vladmihalcea.com/2014/02/24/the-regex-that-broke-a-server/
You have a string “BEFOREAFTER”. If this string has a ‘x’ in it, you want to capture everything before the ‘x’, else you want to capture the whole string. So,
”BEFOREAFTER” gives “BEFOREAFTER”
”BEFORExAFTER” gives “BEFORE”
http://octodecillion.com[..]apture-with-optional-delimeter/#solution
http://www.infoq.com[..]/regular-expressions-introduction-part01
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Wed Jul 12 14:46:08 HKT 2017
From /weblog/photographic
星軌拍攝技巧 數問 - 1).數碼機因hot pixel而唔適合曝得耐...最好分開影影夠幾個鐘...咁每張間隔之間都要俾CMOS斗下氣？ 有師兄 教過 分十幾張 每張 10-20min 再合成 好過 一野 暴 幾粒鐘, (菲林 令計) 2).數碼機有D人話用ISO 100、有人話用ISO 400-800好...如果用合成方法...其實係咪都係就番光害而定...定係關雜訊事？ 睇天氣 , 小弟 用 o個次 用 iso 100 5).北極星仰角澳門係23度，咁香港一樣？？ 4季 都唔同 位置, 用星座 搵 會準確 d, e+ 係 冬季, 北極星 位置 係 獵戶座 (lei 個最易 認, 唔會 搵唔倒 ... ) 頭頂 (腰帶 致 頭頂 距離 再過 5倍左右) 附圖 係 舊年 去雲南 香格里拉 時影, 本泥想 長暴, 不過 o個晚 太涷 個人 頂唔順 要收皮 反酒店 http://www.dchome.net/viewthread.php?tid=798154 With a lot of information, 香港的星空 — 觀測及拍攝資訊 - http://www.dcfever.com/column/read.php?id=1829 Herman's articles at dcfever - http://www.dcfever.com/column/info.php?id=185 500px tutorial - http://500px.com/blog/738/tutorial-photograph-the-night-sky About Comet - http://www.dcfever.com/column/read.php?id=2193 Atmospheric optical phenomena 大氣光學現象 - http://matthew-chin.blogspot.hk[..]16/06/atmospheric-optical-phenomena.html ===== 這張是11月15日凌晨拍攝的M42獵戶座星雲, 大埔的光害較嚴重, 所以要加上IDAS V4濾鏡作長時間曝光, 分三段不同時間曝光及作Layer Masking 處理, 把動態範圍拉闊. 在月光的影下算是滿意, 希望之後可以分數晚作10小時以上的曝光並加長每一張frame 的曝光時間 (現在是5分鐘一張), 使到暗位的表現進一步改善. Place: Tai Po Date: 14 Nov, 2013 (UT) Camera: Canon 20Da Lens: Canon EF-600 F4L Mount: Vixen Sphinx with Star Book Filter: IDAS V4 Exposure: 10 sec x 10, 30 sec x 10, 300sec x 26 ISO: 800 Guiding: Borg 60mm telescope, AIS120MM, PHD guiding. Image calibration: Dark x 20 (average) for each exposure, Bias x 16 (Median), Dark subtracted Flat field x 20 (Median) Processing: DSS, PS: layer Mask, Cropped, curve, colour adjusted. http://forum.hkas.org.hk/viewthread.php?tid=8009 ===== http://list25.com[..]resemble-things-found-on-earth/?view=all how-to-find-the-milky-way - http://goldpaintphotography.com[..]om/2015/07/24/how-to-find-the-milky-way/ how-to-capture-sharp-star-photographs - http://www.mikkolagerstedt.com[..]10/how-to-capture-sharp-star-photographs 銀河 - 觀測和拍攝 - http://matthew-chin.blogspot.hk/2016/06/blog-post.html 簡易四步驟處理高清銀河 - http://www.dcfever.com/column/read.php?id=3278 TimeLapse-AfterEffects特效『星流跡影片』-進階 - http://www.dcfever.com/column/read.php?id=3935 500 rule: 11mm: 45.5 seconds 12mm: 41.7 seconds 14mm: 35.7 seconds 16mm: 31.3 seconds 18mm: 27.8 seconds 20mm: 25 seconds 24mm: 20.8 seconds 28mm: 17.9 seconds 35mm: 14.3 seconds 50mm: 10 seconds 85mm: 5.9 seconds http://www.price.com.hk/news.php?sec_id=12&id=7216 How to find constellations: a starter’s guide - http://www.zmescience.com[..]eature-post/starter-guide-constellations 想拍漂亮的散景靜物嗎？6步驟DIY一個超絢麗散景牆, with 鋁箔或銀色包裝紙 - http://digiphoto.techbang.com[..]steps-to-a-super-gorgeous-diy-bokeh-wall http://www.deepskycolors.com[..]ilky-Way-Photo-Concepts-You-May-Wan.html
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