RSS feed [root] /weblog




login:

password:

title search:




 


Tue Jan 17 22:34:04 HKT 2017

weblog


log down some useful resource


(google search) (amazon search)
second
download zip of files only

Wed Jul 26 10:57:03 HKT 2017 From /weblog/database

time series


Some information about Time Series:

http://en.wikipedia.org/wiki/S-PLUS
http://download-west.oracle.com[..]ocs/cd/A87860_01/doc/inter.817/index.htm
http://www.sas.com/
http://oracledmt.blogspot.com/2006/10/time-series-revisited.html
http://oracledmt.blogspot.com[..]1/time-series-forecasting-part-1_23.html

Discussion of time in time series database - UTC or local - http://quant.stackexchange.com[..]ime-in-time-series-database-utc-or-local

Market data:
http://cs.nyu.edu/cs/faculty/shasha/fintime.html

and a book:
http://sql-info.de[..]iented-database-applications-in-sql.html
http://www.cs.arizona.edu/people/rts/tdbbook.pdf

Should we use DATE as key or INT as key? http://quant.stackexchange.com[..]senting-time-series-implementation-level

Collections of column-oriented stores - http://quant.stackexchange.com[..]s/1392/usage-of-nosql-storage-in-finance

时序数据库深入浅出之存储篇 - http://www.infoq.com/cn/articles/storage-in-sequential-databases

深入浅出时序数据库之压缩篇 - http://www.infoq.com/cn/articles/condense-in-sequential-databases

pretreatment - http://www.infoq.com[..]les/pretreatment-in-sequential-databases

Why - http://www.infoq.com/cn/news/2017/07/Why-time-series-database

分级存储 - http://www.infoq.com[..]archical-storage-of-sequential-databases

(google search) (amazon search)


Wed Jul 26 10:20:22 HKT 2017 From /weblog/web

performance


One of many tips of how to design a website that deliver content faster - http://alexander.kirk.at[..]006/02/02/10-steps-to-a-faster-web-site/

The other, for user to read quick - http://www.vandelaydesign.com[..]0-ways-to-design-for-impatient-visitors/

Webmaster tools, marketing - http://www.sitepronews.com/archives/2007/aug/3.html
Webmaster tools, page development - http://manwithnoblog.com/2007/08/05/css-debugging-tools/
and tools to tune page performance - http://skytechgeek.com[..]tools-to-boost-up-your-site-performance/

Tips from codinghorror - http://www.codinghorror.com[..]og/2011/06/performance-is-a-feature.html

Tips from ACM - http://queue.acm.org/detail.cfm?ref=rss&id=2512489

Web Framework Benchmarks - http://www.techempower.com/benchmarks/

How taobao optimize their mobile app - http://www.infoq.com[..]bao-521-performance-optimization-project

The timeline of how browser showing the page, and how to optimize it - http://www.nateberkopec.com[..]rontend-performance-chrome-timeline.html https://medium.com[..]-for-the-browser-f2f51a29c572#.7ivccwl5e

How a page loaded fast - https://varvy.com/pagespeed/wicked-fast.html https://medium.baqend.com[..]d-page-loads-lessons-learned-4bb1be3ed07

About making picture load faster - http://www.infoq.com[..]icles/yelp-lossless-compression-pictures

(google search) (amazon search)


Tue Jul 25 11:18:11 HKT 2017 From /weblog/trip/travelling

south america


阿根廷的觀鳥天堂 - http://cn.wsj.com/big5/20120510/trv081838.asp

http://thenatureoftheworlds.blogspot.com.au[..]m.au/2013/10/iguazu-falls-argentina.html

magnificent-torres-del-paine-national-park-photos-you-absolutely-have-to-see - http://list25.com[..]tos-you-absolutely-have-to-see/?view=all

Hotel next to Perito Moreno Glacier - http://www.eolo.com.ar/home_eng.htm

一個中國人在沒有馬奎斯的波哥大- https://theinitium.com[..]0170211-culture-travel-marquez-columbia/

世界獨一無二 哥倫比亞彩虹河奇觀 - https://dq.yam.com/post.php?id=2498

(google search) (amazon search)


Tue Jul 25 00:48:50 HKT 2017 From /weblog/science

light


Interesting, test speed of light with ping - http://physics.stackexchange.com[..]experiments-to-derive-the-speed-of-light

History of color photograph - http://writescience.wordpress.com/2012/11/21/in-living-color/

光電效應:愛因斯坦的諾貝爾 - https://phycat.wordpress.com[..]19/photoelectric-effect-einsteins-nobel/

光速:宇宙高速公路的速度限制 - https://phycat.wordpress.com/2016/12/08/speed-of-light/

What exactly is a photon? Definition, properties, facts - http://www.zmescience.com/science/what-is-photon-definition-04322

Why Gold is yellow in color - http://www.zmescience.com[..]other/feature-post/gold-color-relativity

(google search) (amazon search)


Wed Jul 19 17:07:17 HKT 2017 From /weblog/political

democracy


Problem?? http://cn.wsj.com/big5/20110419/GOK075032.asp?source=rss

民主、法治與自由 - http://cn.wsj.com/big5/20111010/WES071154.asp?source=rss

憲政與民主:孰先孰後? http://cn.wsj.com/big5/20130131/YXZ070844.asp?source=rss

Noam Chomsky - http://list25.com/25-facts-about-noam-chomsky/?view=all

從思考終審法院的多數決制度我們能學到什麼? -
https://thestandnews.com[..]%BD%E5%AD%B8%E5%88%B0%E4%BB%80%E9%BA%BC/

(google search) (amazon search)


Wed Jul 19 14:59:51 HKT 2017 From /weblog/design

packaging


Avoid circular dependencies between packages! http://www.infoq.com/news/2007/06/large-code-bases

2 common approach, by function or by layer - http://dolszewski.com/architecture/project-package-organization/

(google search) (amazon search)


Wed Jul 19 00:22:53 HKT 2017 From /weblog/security

tools


The NSA has open-sourced dozens of security tools
- https://medium.freecodecamp.org[..]ced-dozens-of-security-tools-7af99cfe422

(google search) (amazon search)


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

(google search) (amazon search)



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/

(google search) (amazon search)


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

(google search) (amazon search)


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

(google search) (amazon search)


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

(google search) (amazon search)


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

(google search) (amazon search)


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/

(google search) (amazon search)


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

(google search) (amazon search)




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

(google search) (amazon search)


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/

(google search) (amazon search)


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

(google search) (amazon search)


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

(google search) (amazon search)


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/

(google search) (amazon search)


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

(google search) (amazon search)