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Tue Jan 17 22:34:04 HKT 2017

weblog


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Tue Jul 18 00:30:55 HKT 2017 From /weblog/learning

presentation


How to capture the attention from audience in 30 second - http://www.learninggeneralist.com[..]tter-beginnings-how-to-capture-your.html

How you can build Meaningful Interactivity into your eLearning - http://www.learninggeneralist.com[..]010/01/how-you-can-build-meaningful.html

3 Ways to Spice up Linear Navigation in Elearning - http://www.learninggeneralist.com[..]ys-to-spice-up-linear-navigation-in.html

5 Simple Ideas to Avoid Presentation Nervousness - http://www.learninggeneralist.com[..]-simple-ideas-to-avoid-presentation.html

3 Visual Design tips to make your presentation slides pop - http://www.learninggeneralist.com[..]4/3-visual-design-tips-to-make-your.html

Questions to ask to make presentation short - http://www.stevenlist.com[..]blog/2011/03/29/make-a-long-story-short/

Some tips for developing presentation skill - http://www.insightfullogic.com[..]w-grow-speakers-your-technical-community

做個一流講者 - http://wired.tw/posts/2789

Ignite, a way of short presentation - http://blogs.ancestry.com/techroots/ignite-at-ancestry-com/

http://www.bbc.com[..]s-to-make-yourself-effortlessly-charming

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Thu Jul 13 00:26:12 HKT 2017 From /weblog/trip/travelling

German


The trip of art - http://cn.wsj.com/big5/20120203/trv083545.asp?source=rss

History when communist party in charge - http://cn.wsj.com/big5/20121221/LLW075021.asp?source=rss

柏林圍牆的去或留 - http://thisbigcity.net/zh-hant/berlinwall/

http://blog.kkday.com/2017/06/reasons-to-visit-berlin.html

通往神秘世界的入口?德國完美倒影魔鬼橋 - http://www.dcfever.com/travel/deal.php?id=19686 http://mymodernmet.com/circle-bridge-photography/

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Wed Jul 12 14:46:08 HKT 2017 From /weblog/photographic

star


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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Wed Jul 05 11:27:44 HKT 2017 From /weblog/trip/travelling

Philippines


巴拉望 - http://go2nature.net[..]t=32342&postdays=0&postorder=asc&start=0 http://travel.sina.com.hk/news/121/4/1/27443/1.html http://blog.kkday.com/2016/11/PalawanSpots.html

cebu - http://blog.kkday.com/2017/07/cebutop10.html

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Tue Jul 04 00:36:50 HKT 2017 From /weblog/%E6%97%A5%E5%B8%B8%E7%94%9F%E6%B4%BB

food


寫在沙中線通車前幾年,我最喜愛的土瓜灣十間食肆 - http://foodie-smashingpumkins.blogspot.hk/2017/07/2017.html http://foodie-smashingpumkins.blogspot.hk[..]ns.blogspot.hk/2015/06/blog-post_13.html

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Mon Jul 03 01:03:21 HKT 2017 From /weblog/software_engineering

specification


Painless Functional Specifications - http://www.joelonsoftware.com/articles/fog0000000036.html

How to write a project specification - https://jaxenter.com/write-project-specification-135067.html

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Tue Jun 27 17:11:29 HKT 2017 From /weblog/career/jobs

interviewer tip


The best way I've found to interview candidate developers is to pair program with them to do real work on the actual code of the project that is hiring. If not possible, give programming exercise which is:

The exercise must involve working with current development tools.
The exercise must require the candidate to apply important features of the language.
The exercise must involve understanding and working with existing code.
The exercise must involve error handling.
The exercise must involve testing.
The exercise must offer scope for domain modelling.
The exercise must involve asking questions.
The exercise must be realistic.
The exercise must involve changing requirements.
The exercise must offer the candidate enough rope to hang themselves.
The exercise must test many different skills and practices.

A good interview programming exercise takes at least an hour. - http://nat.truemesh.com/archives/000630.html

The other interesting reading - http://blog.secosoft.net[..]ass-kickin-interviewscreening-questions/

Phone interview - http://www.joelonsoftware.com/articles/ThePhoneScreen.html

Questions that somebody like to ask... although I think this guy is a bit arrogance - http://softarc.blogspot.com[..]y-favorite-java-developer-interview.html

Another interview question and answer - http://journeymanjournal.blogspot.com/2005/03/sir-am-i-hired.html http://paultyma.blogspot.com[..]/howto-pass-silicon-valley-software.html http://www.codinghorror.com/blog/archives/001042.html

How about lie at CV? http://jroller.com[..]mon?entry=lying_on_your_r%C3%A9sum%C3%A9

Interviewing in google - http://pyre.third-bit.com/blog/archives/000174.html

What interviewee should asked at interview - http://blog.reindel.com[..]programmer-should-ask-on-a-job-interview

What should not waste time to ask the candidate - http://www.innerspace.com.hk/cl_life.html

http://www.ehow.com[..]303_use-technique-ace-job-interview.html

Beware of the small things during interview - http://cn.wsj.com/big5/20100115/eoe145304.asp

The concern of putting negotiable in salary - http://jobtipsforgeeks.com/2014/08/08/negotiable/

http://www.zdfs.com/code/2015/on-interviewing-software-engineers

how-to-carry-out-technical-recruitment - http://www.infoq.com[..]s/how-to-carry-out-technical-recruitment http://ramblinjan.com[..]ing-Process-is-your-engineering-process/

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Sat Jun 24 01:29:36 HKT 2017 From /weblog/health/food

cake


甜菜根冰皮月餅 - http://icook.tw/recipes/55680

parmesan-spinach-cake - http://www.webmd.com/food-recipes/parmesan-spinach-cake

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Sat Jun 17 00:56:16 HKT 2017 From /weblog/love

child


How to encourage chile? use imagination :-) http://www.metacafe.com/watch/41491/black_drawings/

And also by not doing something normal :-) http://www.thepowerofintroverts.com[..]-mother-helped-launch-my-writing-career/

父母該如何輔導孩子做作業 - http://cn.wsj.com/big5/20130102/wvh072447.asp?source=rss

總體策略是這樣的:家長不應該只關注孩子做了些什麼﹐而應該先確定他們想在孩子身上看到哪些行為 - http://cn.wsj.com/big5/20130122/lif072751.asp?source=rss

Maybe a good idea to take a video for our child - http://cn.wsj.com/big5/20130114/inv073030.asp?source=rss

What should we do if we have argument before kids - http://cn.wsj.com/big5/20131016/lif071929.asp?source=rss

我會花掉你夢想中的房子
把我生下來會花掉你一大筆錢
我會傷透你的心
開心工作,賺錢給我付托兒費。
我的零花錢一點兒也存不住
我知道你愛哥哥/姐姐/弟弟/妹妹比愛我多一些。
我弄壞了你的iPad、iPhone,還有電腦。
我看屏幕上癮都是你的錯
你大概沒法指望我來讓你抱孫子了
你會哭的,當我離開……並留給你最後一張賬單的時候

http://cn.wsj.com/big5/20131009/lif073455.asp?source=rss

相對而言,鼓勵是更好的方式。減少單純地讚美,更多地進行有意義的激勵。 - http://cn.wsj.com/big5/20140526/LUX114130.asp?source=rss

父愛,保護女兒遠離危險性行為的關鍵 - http://cn.wsj.com/big5/20170616/LIF174227.asp?source=rss

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Sat Jun 17 00:39:28 HKT 2017 From /weblog/health/food/fruit

apple


蘋 果 能 減 少 吸 收 熱 量 , 美 國 賓 夕 凡 尼 亞 州 立 大 學 的 一 項 研 究 , 將 體 重 正 常 參 加 者 分 成 三 組 , 在 五 個 星 期 內 , 一 組 人 在 午 餐 前 不 吃 任 何 東 西 , 第 二 組 在 午 餐 前 吃 一 個 蘋 果 , 第 三 組 則 吃 蘋 果 醬 或 飲 蘋 果 汁 , 三 組 人 再 進 食 相 同 的 午 餐 , 研 究 人 員 在 餐 後 15 分 鐘 為 各 人 進 行 熱 量 測 試 , 結 果 發 現 餐 前 吃 蘋 果 的 人 熱 量 攝 取 少 187 卡 路 里 。 研 究 結 束 後 這 一 組 人 的 體 重 更 明 顯 下 降 , 研 究 更 發 現 吃 整 個 蘋 果 的 減 肥 功 效 ,遠 超 過 飲 蘋 果 汁 。

Other than that, 蘋果鬆 is good - http://rayswchiu-ej.blogspot.com/2009/08/blog-post_9454.html


早上吃水果,可幫助消化吸收,有利通便,而且水果的酸甜滋味,可讓人一天都感覺神清氣爽。人的胃腸經過一夜的休息之後,消化功能不強。因此要選擇酸性不太強、澀味不太濃的水果,比如蘋果、梨、葡萄等。 - http://hk.apple.nextmedia.com/realtime/china/20140715/52692068

http://list25.com/25-fun-facts-about-apple-the-fruit/

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Wed Jun 14 18:34:19 HKT 2017 From /weblog/unix/script

development


A bash debugger - http://bashdb.sourceforge.net/

Really really good tips - http://fahdshariff.blogspot.com.au[..]3/10/shell-scripting-best-practices.html

Style guide - http://www.kfirlavi.com[..]og/2012/11/14/defensive-bash-programming

Script checker - https://www.shellcheck.net/

How to write a shell - https://indradhanush.github.io/blog/writing-a-unix-shell-part-1 https://indradhanush.github.io/blog/writing-a-unix-shell-part-2

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Wed Jun 14 11:13:47 HKT 2017 From /weblog/unix

Linux


How to get the system thread version - getconf GNU_LIBPTHREAD_VERSION http://groups.google.com[..]wse_thread/thread/81ff4b5d1ea3372d?hl=en

How to prevent module getting load, by edit /etc/modprobe.d/blacklist.conf : http://www.basshero.org/62/how-to-disable-devices-in-ubuntu/

Standard Linux error code - http://www.thegeekstuff.com/2010/10/linux-error-codes/

http://www.thegeekstuff.com[..]11/03/linux-performance-monitoring-intro

Discussion about why Linux is way faster than Windows for huge number of small file processing - http://stackoverflow.com[..]s-to-go-as-fast-as-linux-for-compiling-c http://games.greggman.com/game/why-is-windows-so-slow/

"sync; sudo echo 3 > /proc/sys/vm/drop_caches" - http://www.ubuntugeek.com[..]ow-to-clear-cached-memory-on-ubuntu.html

Funny linux commands - http://www.pixelstech.net/article/1370744983-Funny-Linux-commands

25 years of linux - https://medium.freecodecamp.com[..]acts-about-linux-c8d8ac30076d#.m6b9wnhni

basic-principle-of-Linux-privilege-control - http://www.infoq.com[..]sic-principle-of-Linux-privilege-control

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Tue Jun 13 10:45:44 HKT 2017 From /weblog/history

youtube


http://list25.com/25-intriguing-youtube-facts-you-may-not-know/

http://list25.com[..]ing-facts-about-youtube-you-should-know/

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Mon Jun 12 15:00:14 HKT 2017 From /weblog/ai

python


https://speakerdeck.com/marcobonzanini

http://www.infoq.com[..]/2017/06/Machine-Python-math-aggregation

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Sun Jun 11 19:36:25 HKT 2017 From /weblog/software_engineering/SCM

git


Suggestful github project - http://rdegges.com/successful-github-development

GIT to SVN command guide - http://www.javacodegeeks.com[..]vs-svn-commandline-syntax-reference.html

pretty cool guide - http://martin.elwin.com[..]e-to-an-ioke-dev-env-from-source-part-1/ http://www.ralfebert.de/tutorials/git/ http://www.drdobbs.com[..]rticleId=240160261&siteSectionName=tools http://www.drdobbs.com[..]&siteSectionName=architecture-and-design

Some comments about possible issues - http://www.ericsink.com/entries/git_index.html

http://www.developer.com[..]an-streamline-your-writing-projects.html

Several ppl blog about why GIT better than SVN - http://inancgumus.com[..]tages-of-git-over-subversion-svn-a-brief http://altdevblogaday.org[..]03/09/its-time-to-stop-using-subversion/ http://blog.ashodnakashian.com/2011/06/git-for-personal-projects/

A suggested branching model - http://nvie.com/posts/a-successful-git-branching-model/

Some advantage of GIT over Mercurial - http://blog.extracheese.org[..]hy-i-switched-to-git-from-mercurial.html

#undo last commit
git reset HEAD^

#show files in a given commit
git show --pretty="format:" --name-only rev_number

#remove untracked files and directories
git clean -f -d

#track remote branch
git branch --track branch_name origin/master

# given you created a new local branch 'branch_name'
# pushes 'branch_name' to 'origin/branch_name', creating the remote branch for you
git push origin branch_name

#delete remote branch
git push origin :remote_branch_name

From http://leonardoborges.com[..]ngs/2011/05/29/a-few-useful-git-commands

Some more suggested workflow - http://eclipsesource.com/blogs/2011/06/09/git-lessons-learned/ http://sandofsky.com/blog/git-workflow.html

Move from SVN, experience of JIRA - http://www.drdobbs.com[..]from-subversion-to-git-and-the/240009175 http://blogs.atlassian.com/2013/10/git-workflows-webinar-qa

Merge or Rebase? http://blogs.atlassian.com[..]13/10/git-team-workflows-merge-or-rebase

http://www.javaworld.com[..]ntial-tips-for-git-and-github-users.html

change-default-git-commit-message-template - http://blog.ajduke.in[..]nge-default-git-commit-message-template/

https://codewords.recurse.com/issues/two/git-from-the-inside-out

Git cheat list - https://gist.github.com/aleksey-bykov/1273f4982c317c92d532

https://examples.javacodegeeks.com[..]re-development/git/git-commands-tutorial

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Wed Jun 07 00:33:28 HKT 2017 From /weblog/history

hardware


A History of Hard Drives - https://www.backblaze.com/blog/history-hard-drives/

【Lynn 寫點科普】你知道你正在用的電腦是 70 年前發明的馮紐曼架構嗎? - https://www.inside.com.tw/2017/06/05/von-neumann-architecture

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Sat Jun 03 16:44:50 HKT 2017 From /weblog/hack+and+faq

aws


s3 tutorial - https://www.javacodegeeks.com/2017/03/amazon-s3-tutorial.html

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Fri Jun 02 17:55:34 HKT 2017 From /weblog/java/libraries

parsing


Introducing LALR parser in java - http://martinfowler.com/bliki/HelloCup.html

https://tomassetti.me/parsing-in-java/

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Thu Jun 01 23:13:08 HKT 2017 From /weblog/languages/c

optimization


Optimizing Pixomatic for x86 Processors part II

http://www.ddj.com/architect/184405765
http://www.ddj.com/184405807
http://www.ddj.com/184405848
http://www.home.comcast.net[..]tom_forsyth/papers/pixomatic_gdc2004.ppt

Fast way to add null after each char from a string - http://groups.google.com[..]wse_thread/thread/51d0f84dd22ad734?hl=en

Move 80 bytes asap - http://codereview.stackexchange.com[..]520/copying-80-bytes-as-fast-as-possible

Pass by value maybe faster than pass by reference - http://cpp-next.com/archive/2009/08/want-speed-pass-by-value/

Why is java consumer/producer so much faster than C++, a lot of analysis and optimization tips for C++ coding - https://groups.google.com[..]mgroups#!topic/comp.lang.c++/7aNw3PzPvMI

case study of optimization with asm output - http://roartindon.blogspot.hk[..]2016/04/boosting-zopfli-performance.html

Thread-Local Storage - http://david-grs.github.io/tls_performance_overhead_cost_linux/

There are chance that remove branching make code run faster -
http://www.infoq.com/cn/articles/x86-high-performance-programming Other articles in same series - http://www.infoq.com[..]86-high-performance-programming-pipeline
http://www.infoq.com[..]igh-performance-programming-optimization

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Sun May 28 21:19:36 HKT 2017 From /weblog/photographic/tools

free image processing


A nice article about image processing at Linux, seem all tool are cross platform

http://jane.dallaway.com/articles/GimpPhotography.html
http://www.erikburrows.com[..].php?node=Digital+Photography+with+Linux

After some research, see neat image is the best tools for noise reduction. See if it able to use with GIMP

http://www.neatimage.com/

https://www.google.com/nikcollection/products/hdr-efex-pro/

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Tue May 23 15:55:04 HKT 2017 From /weblog/google/development

html5


GWT websocket - http://code.google.com/p/gwt-websockets/
Javascript websocket call - http://blog.chromium.org[..]web-sockets-now-available-in-google.html
pwa - https://developers.google.com/web/progressive-web-apps/


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