Thursday, December 28, 2006

Saturday, December 23, 2006

Friday, December 22, 2006

Recent Trends

ADSL -> FTTH
  • Point-Topic:光纖降價有取代Cable modem之勢 (2006/12/14)
802.11 a/b/g -> 802.11n
3G -> HSDPA (3.5G) -> 4G, WiMax
CD -> Paid Music Download

TV-> IPTV, DTV, DVB-H
Wireline Phone -> VoIP or VoWiFi
Mobile Phone->VoIP over HSDPA

Spread Spectrum -> OFDM -> OFDM + MIMO

12-23-2006 Class

Student Presentation (schedule)

12/23
Service model: 台北市政府的VOIP公務服務系統

Web 2.0 BBS: Gaaan

Web 2.0 Personal Portal:
Wi-Fi Community Network and Business Model <fon>


預告
12/30 連假日停課ㄧ次

Monday, December 18, 2006

Homework 12/16/2006

For housing services, compare the three websites
http://www.housingmaps.com
http://www.urmap.com.tw/asp/kijiji/
http://www.7house.com.tw

List the differences in the user interface design and usability. Make comments
by your use experiences.

Sunday, December 17, 2006

Web 2.0 for NPO (Nonprofit organization)

Web 2.0 is absolutely a trend that NPO should pursue.
I have a study as posted in the following.
Web 2.0 also has some problems that people start to notice. First of all, sharing is limited and diverse.
Various tools exist: Blogs, Flickr, BT, …. It is not uncommon
that one has to combine several services in order to make things done.
For example, save the documents in Google Docs, store the photos on Clickr,
and write blogs on SixApart.
Second, existing Web 2.0 service providers give limited storage and functions.
There is no roadmap about the new features people
are looking for. Change of the platform is not straightforward, either. For example,
people better not decide to move from Blogger to Xuite, because there is no import
function.
Nonetheless, I think one can still leverage the existing nice services such as Flickr, Google Docs, and Blogger that
are already popular. These services seem generic and have uses in many ways.
As to the mission critical applications that NPO want to build, Web 2.0 essentials can be built into these systems
from scratch. For example, we can do AJAX programming to make the GUI more usable and friendly.
We can also let users contribute and share their data, and even enable them to mash services up, just to name a few.
A far dream may be a Web 2.0 platform that NPO can host their mission critical applications.
In that case, all they need is learn how to use the systems without the bothering IT maintenance problems.

Saturday, December 16, 2006

Web 2.0

Web 2.0
  • WYSWYG (What you see is what you get.)
  • Personalization
  • Mashup
  • Sharing
  • Feedback
If Web 1.0 is read only, then Web 2.0 is Read-Write.

Web 1.0 is for the user.
Web 2.0 is for the user and by the user.
Web 3.0 is for the user, by the user, and of the user.

examples:

Wikipedia

http://www.google.com/ig

Google News

Software as a Service: Wriely

Panorama Explorer

Mashup examples:
References:

What is Web 2.0? By Andy Budd of Clearleft Ltd

What Is Web 2.0 by Tim O'Reilly

Sunday, November 26, 2006

Homework 11-25-2006

1. In an era of Web 2.0, Software as a Service is becoming popular.
Google Docs is one of the famous examples. In the followling lab, let's give Google Docs a try.
  • Go to Google Docs. Google Docs lets you write Word documents through an online web service.
  • Write some words in a Word format.
  • Publish the Word document.
  • What's the URL of your document.
Hint: This is a sample Word document.

2. RSS is a tool to syndicate web publishing. Many blogs and news websites make use of RSS.
In the following lab, we will see how RSS is used for syndication and subscription.
news.yam.com
中時電子報
New York Times
Taiwan
  • Subscribe to the RSS feeds one by one.
  • What is the RSS feed that Google Reader takes in? List the URL of these RSS feeds.
(Hint: Examine Yam's RSS feed. )

Saturday, November 25, 2006

12-02-2006 停課一次

事由

預告
12/30 連假日停課ㄧ次

12-9-2006 上課內容

1. Student Presentation (schedule)
簡報者請將簡報材料於上課前一天email寄給 yjchang at cycu.edu.tw


Wednesday, November 22, 2006

11-25-2006 上課內容

1. Student Presentation
簡報者請將簡報材料於上課前一天email寄給 yjchang at cycu.edu.tw

12-02-2006 停課一次

老師在全國電信研討會發表論文
題目 :
Performance Evaluation of a Novel Distributed Algorithm for Car-to-Car
Communication Location Service over Street Environments

英文的重要性

英文的重要性在全球化的趨勢下只有與日俱增,
差別不是需不需去學, 而是你選擇今天就開始好好學,
或是10年後面臨工作面對升遷時再花費加倍的力氣去學.

及早學好及早享受英文流利的人獨享的優勢與機會.

Saturday, November 11, 2006

11/18/2006 期中考週 停課一次

12/30 連假日停課ㄧ次

Presentation Update

Hanks, 洪孟揚, 黃兆平,簡里安: a new paper is assigned
廖得佑(c10), 陳秋慧: rescheduled

請參閱 schedule

Saturday, November 4, 2006

Presentation Update

廖泰成 a new paper assigned
陳秋慧 a new paper assigned
陳建富 a new paper assigned
簡里安 rescheduled

請參閱 schedule

11-11-2006 上課內容

1. Paper presentation (schedule)
  • 簡報者請將簡報材料於上課前一天email寄給 yjchang at cycu.edu.tw

2. Software as a Service (SaaS).
3. Blogs in education

4. Marketing 2.0

5. Mobile Social Software
CHI 2006 Workshop on Mobile Social Software

11-18-2006 考試週停課一次

11-4-2006 Homework

繳交期限 11/11 下午 1:00 整
Submission due 11/11 at 1:00 p.m.

1. (Continued from the last homework) For the comments people left on your homework, give response that you think appropriate. You may want to say thanks to them in the first place.

2. Reading Assignments: (Next presentation)
Read the papers assigned to the following persons.
莊育嘉(Social Serendipity) ,徐欣佑(blog paper by hp), 建年(Wireless privacy), 陳秋慧(Web 2.0)

Dealing with Negative Comments

FIND

F: find. Look for negative events.
I: investigate. Invesitigate where the failure was.
N: neutralize. Solve the problem.
D: deliver. Deliver a positive experience.

Saturday, October 28, 2006

10-28-2006 Homework

1. Reading Assignment:
Chap 9, 10, 11 of Textbook. (Next presentation)

2. Check into your classmates' last homework,
read some of them. Write your comments on at least 2 homework blogs.
Tell me where you leave your comments, namely the URL, so that I can follow you to review your comments.
When leaving comments, be fair, constructive, and straight to the blogs you read. Your comment writing should be
as concise, clear, and correct (C3) as possible.
1. Trends of Internet Business
2. Mobile services based on WiMax

11-4-2006 上課內容

1. Blog Marketing: Chap. 9, 10 & 11 (presenters)

Sunday, October 22, 2006

10-28-2006 上課內容

1. Blog Marketing: Chap. 6, 7 & 8
2. How to build a team blog.



Saturday, October 21, 2006

10-21-2006 Homework

繳交期限 10/28 下午 1:00 整
Submission due 10/28 at 1:00 p.m.

1. Based on the discussion in class,
what kind of applications can be done using wireless positioning technology?

2. Reading Assignment:
Chap 6, 7, 8 of Textbook. (Next presentation)

3. Install Firefox. Use firefox to subscribe to the course blog.

學生請假方法

如果你有事不能來上課, 請在該日上課內容下註明(Comment)就可以了.

請假以三次為限.

10-21-2006 上課內容

1. 介紹無線定位技術
2. Blog Marketing: Chap. 4 & 5
3. Sensor + Interactive

10月21日 老師的學生結婚, 所以我們下午兩點開始上課, 五點結束.

Saturday, October 14, 2006

Trends of Internet Business

Internet outgrows desktop, finally

Microsoft was king but Google is the new one.

Wireless and Web 2.0 will change the landscape

why bothers to use iPod, Kuro?
Wireless makes download clumsy.
Music blog such as MySpace makes pirating Kuro unnecessary.

Web 2.0

platform provider instead of content provider. Build the right platform and the right time and the content will come and rest upon.

the platform is the portal, the one stop shop for things that are one of a kind. Content cannot afford to be placed elsewhere because this is the only place most people go to.

Marketing with not to

content provided by users, promoted by users. It spreads like virus.

Business Models

ads placed by the platform provider. ads most likely in text form, context matched with the user-provided content

Electronic Commerce (EC) and online services continue to expand

Mobile Commerce contines to find the way out

Student Presentation (New)

請先閱讀簡報製作原則

為了讓更多同學有機會上台, 我們將更動簡報時間表如下:
原先10/28以後簡報的同學提前. (原先時間表)

9/30 林志龍(PageRank) ,鄧富明(c1)
10/14 陳炯銘(c2) ,蕭燦良(c3)
10/21 廖泰成(c4) ,連家良(c5)
10/28 李杰修(c6) ,康盈堃 (c7),林志興(c8)
11/4 蔡奇峰(c9), 廖得佑(c10) ,余怡璇(c11)
11/11
11/25
12/9
12/16
12/23
1/6

Homework 10/14/2006

Read the article about Google Adsense
and watch the video of the talk given by the Adsense developer.
Summarize the talk and the things your learn.

10月21日 老師的學生結婚, 所以我們下午兩點開始上課, 五點結束.

Friday, October 13, 2006

10-14-2006 不能上課者請簽名

I know some of you have to work in the office and keep making money.
I can understand you will have to absent from the class.
Just leave your name here at the comment.

10/14/2006 上課內容,請自學.有問題可隨時提出.

Google Ad Business Models













10/14/2006 上課內容

1. 從Youtube 看未來寬頻影音的發展

2. 討論 Blog Marketing 第二與第三章

Google Services You Should Know (and Use)

都是免費

論文全文搜尋與下載
http://scholar.google.com

在網路上直接編寫Word 和Excel
Docs and Spreadsheets

一次閱讀多個資訊源並加以過濾
Google Reader

地圖
Google Maps
利用Google Maps作出的服務(Mash-Up Services)

Thursday, October 5, 2006

Saturday, September 30, 2006

Homework 9-30-2006

繳交期限 10/14 下午 1:00 整

1. 安裝 PageRank , 然後使用 PageRank 量測以下網站的 PageRank (0~10分)
美國 FirstGov
英國 Direct Gov
日本 首相與內閣入口網
台灣 MyeGov
新加坡 SingGov
澳洲 Australia Government
中國 中央政府門戶網站
韓國 http://Korea.go.kr

2.
Moodgrapher plots the mood levels reported by LiveJournal users in their posts.
  • Use Moodgrapher to compare the "happy" mood level versus "sad" during the period from 9/1/2006~9/30/2006.
  • Can we justify that people drink more during the weekends?
3. Read JONATHAN SCHWARTZ, Sun CTO's Blog. Do you think his blog is authentic, honest, and authoratative? Why?

Student Presentation

本表已經更新, 前往新時間表

9/30 林志龍(PageRank) ,鄧富明(c1)
10/14 陳炯銘(c2) ,蕭燦良(c3)
10/21 廖泰成(c4) ,連家良(c5)
10/28 李杰修(c6) ,康盈堃 (c7)
11/4 林志興(c8) ,蔡奇峰(c9)
11/18 廖得佑(c10) ,余怡璇(c11)
11/25 莊育嘉 ,徐欣佑, 建年
12/2 陳秋慧 ,蔡士楷
12/9 黃鈞蔚 ,朱衍印
12/16 簡里安,黃仁昆
12/23 陳建富 ,陳昶豪
12/30 宋懷遠 ,Hanks
1/6 洪孟揚, 黃兆平

Each presentation is 15 minutes plus 15 minutes Q&A, a total of 30 minutes.

Sunday, September 24, 2006

10/7 中秋國慶假日不上課

9/23 上課綱要

廣告重新洗牌: 線上廣告
絢爛歸於平淡: 電子商務
接觸你的客層: 分眾網站
全方位的接觸: 整合行銷







Saturday, September 23, 2006

Homework 9/23

1. Watch the 10 minute video clip Beyond the Mobile Frontier by NTT DoCoMo. List, from your point of view, 10 scenarios of what's next technology come into our life.

2. Read Chapter 1 of Blog Marketing.

繳交作業方式

文字式作業原則上使用 Blog: 請至 http://www.blogger.com 申請, 請以你的學號 (s/g開頭) 申請免費帳號。主旨欄請用格式 "作業一" 以加速助教登錄作業成績。

請將你的作業寫在你的 blog, 然後到
Homework 1 的Comment 登錄作業blog網址就可以了.請參考範例.
請勿將作業直接寫在 comment

注意事項
  • 留言顯示驗證詞
  • 正確設定時區顯示時間
  • 測試他人可否留言(comment)

Andy Lark's "The Web vs. Blogging"

Andy Lark's "The Web vs. Blogging"
that contrasts the world of blogs with the traditional websites. He compiled the following comparison list to show the deifferences.

Web= Organized Blog=Chaotic
Web=Predictable Blog=Unpredictable
Web=Find Blog=Browse
Web=Comprehensively Blog=Imcompletely Deep
shallow
Web=Broad Blog=Niche
Web=Slow Blog=Instant
Web=Cold Blog=Warm
Web=Transmission Blog=Conversation
Web=Place Blog=Community
Web=Annonymous Blog=Personal
Web=Company Blog=People
Web=Content Blog=Expression
Web=Cookie Cutter Blog=Individual
Web=Closed Blog=Participatory
Web=Unresponsive Blog=Give Thanks

Thursday, September 21, 2006

Teching with Technology

Teaching with Electronic Technology
This page reflects uses for computing and electronic technology in teaching.
www.wam.umd.edu/~mlhall/teaching.html - 88k - 頁庫存檔 - 類似網頁
Teaching with TechnologyExamples of Teaching with Technology Animating Biology · Environmental Decision-Making, Science, and Technology · Interactive Ancient Egypt ... Next Topic: Best Practices for Teaching with Technology... ...
cmu.edu/teaching/technology/ - 35k - 頁庫存檔 - 類似網頁

Wednesday, September 20, 2006

教學

2010 秋
2010 春
歷年
(給未來的大學部專題生)


教育的中心價值是服務人群,所以我希望同學们在踏入社會以前,能夠學習以專業去服務他人,經由分享讓生活更加充滿快樂,透過付出讓生命更有意義。

''快樂引導成功 而非成功引導快樂" (陳春山)
"互助關懷的社會比效率經濟更重要"

Saturday, September 9, 2006

給研究生

(最近更新 5-8-2009, 1/16/2010)
我編輯了一些給研究生看的資料,
要是我是一個研究生, 我大概也會希望我的指導教授可以早些告訴我這些事.

給新進研究生


新生訓練,善用網路

研究生研究時程

準研究生

研一:

  • 七月報到
  • 八月閱讀研究文獻,修課,探索
  • (隔年)六月終究找到了題目
  • 七月進行初步研究
  • 八月投稿初步成果,確立實驗計畫

研二
  • 九月初步成果發表
  • (隔年)三月完成所有實驗
  • 四月提論文口試申請,*必須有公開發表論文才可以提出申請*
  • 五月撰寫論文
  • 六月口試
  • 七月修改論文,畢業離校

A List of Some Mobile Social Software

sites that use google maps
http://minstral.blogspot.com/2006/04/sites-that-use-google-maps.html
http://minstral.blogspot.com/2006/03/some-applications-of-google-maps.html

Positioning Software
http://minstral.blogspot.com/2006/03/positioning-software.html

Papers about wireless networks applications on social network services
http://minstral.blogspot.com/2006/03/papers-about-wireless-networks.html

WiFi/Cellular Roaming
http://minstral.blogspot.com/2006/03/wificellular-roaming.html

Syllabus of Advanced Internet Applications 2006

About Professor YJ Chang and Applied Networking Lab

Grading Policy
Participation (Presence, Challenging and Answers, & Oral Presentations) 60%,
Homework 40%

Style
Our class is more of a conversation and dialogue than a lecture.

Textbook

  • Jeremy Wright, Blog Marketing, McGraw Hill, 2006

  • Y. J. Chang, Handouts of Advanced Internet Applications. Unpublished, 2006
Reference
  • Social Capital and Information Technology
學期課程

1. Trends of Internet Applications and Business models

Trends of Networking
Beyond the Mobile Frontier by NTT DoCoMo
Blogging, Search Engine, Broadband Video, Peer to peer,

2. Search Engine

PageRank, Personalization
Business Models

3. Blogging

Blog vs. Web
Why Blog?
Things to learn with Blog
XML, RSS, Syndication
Blogging for Business Marketing
Blogging for Internal Communication
Blogging for Project Coordination, Basecamp
Blogging for Learning

4. Mobile Social Software

A List of Some Mobile Social Software

Tracking methods: Dodgeball and Navizon

Friends finding friends
: Dodgeball.com

The Buddy Tracker in Navizon

繳交作業

文字式作業原則上使用 Blog: 請至 http://www.blogger.com 申請, 請以你的學號 (s/g開頭) 申請免費帳號。主旨欄請用格式 "作業一" 以加速助教登錄作業成績。

請將你的作業寫在你的 blog, 然後到
Homework 1 的Comment 登錄作業blog網址就可以了.
請勿將作業直接寫在 comment

注意事項

* 留言顯示驗證詞
* 正確設定時區顯示時間
* 測試他人可否留言(comment)


智慧財產

如果你的作業引用他人文章, 務必註明出處或是網址, 以示尊重他人創作.

研究建議

Scholar Google is one of the best tools for searching academic papers.
You can find a lot of good references in the areas that you feel interested.

簡報製作

如何做好一個簡報投影片, 請參看簡報製作原則

How to do research, by Tzi-cker Chiueh

同學對這門課的評語

update:

Tuesday, September 5, 2006

Research Group at Applied Networking Lab


給研究生的話

研究生 ()為研究領域

碩專 2007 級
  • Hanks (Bluetooth), 任職關鍵無線零件研發
  • 志龍 (e-Government), 任職中科院
碩專2008 級
  • 宋懷遠 (3G), 任職筆電研發
碩專2009 級
  • 秋慧 (e-Learning) 任職高職電子科教師
  • Jen, (Bluetooth) 任職藍芽關鍵零件研發
碩專五
  • Tony (Mobile Ad Hoc) 任職筆電生產
  • YKK 任職中科院
碩專四
碩士ㄧ般生

2006 級
  • 時定樑 (GPS),任職手機研發
2007 級
  • Fisher (Web 2.0)
  • 善堯 (Car-to-Car)
2008 級
  • 欣佑 (Task Prompting),任職手機研發
  • 育嘉 (Web 2.0 for NGOs)
  • Sky, (Wayfinding),任職工業電腦研發
2009 級
  • 張萬志 (Task Prompting),任職網路設備研發
2010 級
  • 瑱賢 (Deviation Detection),服役中
  • 彭書敏 (Indoor Navigation),服役中
  • 陳泳宏 (Web 2.0),待役中
研二
  • 陳彥儒 (Augmented Reality in Assistive Technology)
  • 陳奕蒨 (Assistive Technology for Toilet Training)
研一
大學部

Advices and Hints on doing research
1. "Advice on Research and Writing"
2. "How to Have a Bad Career in Research/Academia" by Dave Patterson,
3. How to do research in Experimental Computer Systems Lab, by Tzi-cker Chiueh

Saturday, August 26, 2006

How blogs are Changing the Way Teachers talk with their Students

One of the teaching challenges in computer-based laboratory is tracking student progress and giving assistance on an individual basis in the lab classroom. Designing specific systems to serve this purpose can be tedious and take great efforts. In addition, traditional web-based tools that help administer a course often store student works in a class-centric fashion. Once the class is closed, student materials may not be accessible to the students themselves any more.

Blogs have been used on campus for vastly diverse purposes. They are often seen as web publishing tools and social networking vehicles. Postings, tracebacks, and comments in the blog computing model usually happen without timelines in mind. Blogs interact with each other in a loosely coupled fashion as relations among blogs are usually nothing more than URL links or RSS subscriptions.

As a solution to the teaching challenge that the author has been wrestling with for years, blogs have been used in a novel fashion for three consecutive semesters at two hands-on computer lab classes, namely Java and Internet Applications, respectively. Our approach sees blogs from a more responsive point of view, and has them serve as catalysts for in-classroom student-instructor interactions.

First of all, the instructor creates a blog for the lab class at the outset. Every student of the class is required to create a blog for the lab when the semester begins. Instructor blogs are for posting lab materials in the curriculum and making announcements to the class. So they deliver lab sheets and hand-outs in electronic version. When finishing a lab, students are asked to submit their results at their own blogs and make a notice by placing a link at the instructor's blog right under the lab. Pursuing the links and checking out students' blogs, the instructor can grasp better immediate understanding of student progress such as how many have finished labs, how good the quality of the results is and what problems may have occurred. The blog is so responsive that instructors can make quick judgments on which students to walk by and initiate further interactions with. Through blogs, this can be done without students leaving their seats or even raising their hands, reducing interferences to others who may be still busy working on the lab. Reading the student blogs, the instructor has better chances to get better prepared before approaching them.

In this study, student feedback is collected and behavior patterns analyzed. Using blogs is found to simplify the tasks of reducing piracy. The tactics to prevent students from pirating in our study is by time stamping the lab works and making them public on the web as soon as possible. Blogs by design serve such a purpose. Anyone that pirates risks being caught by the instructor as well as virtually every other student in the class. We also have success with seeing students learning from peers through blogs. Traditionally, students turn in their works to instructors and have no easy way to learn how their peers achieve on the same assignments. By browsing the comments made by instructors on students’ blogs and the selected peer works, students have better chances to stimulate new ideas to be different from each other. The study shows students who took the lab courses are satisfied with turning in lab results through blog posting, getting instructor's walk-by interactions, piracy reduction, and learning from peers.

Keywords: Teaching with Technology, Blog.

How Blogs are Changing the Way Businesses Talk with Customers

Subtle

JONATHAN SCHWARTZ, Sun CTO's Blog

Less Subtle

王心凌部落格 Cyndi With U

Motorola

克蘭詩

亞培

Wednesday, August 16, 2006

國科會計畫: 結合無線定位技術之行動義工社會網路

社會網絡是由個別的人或專業群集間的關係連結而成,社會網絡也代表著這些連結的集合與彼此連結的強度。過去社會網絡研究通常在少許的參與者中進行,然而透過人手一機的手持裝置,加以位置資訊的應用,使得大範圍的社會網路研究可以實現。 應用此項技術於社會網絡上,求助者可以獲得及時且就近能夠提供幫助的人的位置資訊並請求協助。

結合資訊、電機、心理、社會福利政策、職能治療、管理等專業人才,本團隊致力於可應用在精神障礙者與成長遲緩兒之行動式關懷與非營利科技。近ㄧ年的努力,跨領域研究團隊於精障者就業輔導系統、認知障礙者導航、無線行動等技術已累積多項國際頂尖的研究成果,並於2007年獲得ACM SIGACESS 研究競賽獎項。本計劃網站請參閱計畫部落格

相關聯結
媒體報導
學術著作
獲獎榮譽
服務學習

Saturday, August 12, 2006

歡迎研究生使用 Applied Networking Lab

歡迎研究生使用 Lab 517, 目前空間仍多, 請多加利用.
另外最近剛剛加裝大噸位冷氣.
上網方式可分為有線與無線. 如使用有線, 目前 Lab 517 已經有
switching hub, 但須自行設定 IP.
如使用無線, 目前已經架設 EDIMAX 無線 AP, 速度為 54 Mbps,
因為內建 DHCP, 連線時無須設定電腦 IP, 即插即用.

Thursday, July 27, 2006

Students, skype me

我的帳號是 chang212
歡迎與我 Skype, 建議你先 email 跟我約時間, 這樣我可以
先準備一下, 例如看看你給我的資料.
當然, 如果你要試運氣, 也歡迎直接 Skype 我.
我星期一晚上有課, 其餘晚上都可以約看看. 星期天白天也可以.
以不影響各位工作為原則.

Journal Info: Electronic Commerce Research and Applications

http://www.elsevier.com/wps/find/journaldescription.cws_home/621289/description#description

Journal Info: International Journal of Electronic Business

http://www.calpoly.edu/%7Eeli/iceb/IJEB/

「電子商務學報」徵稿說明

http://jeb.cerps.org.tw/

四份主要的電子商務國際期刊

  • International Journal of Electronic Commerce,
  • Electronic Commerce Research;
  • Journal of Electronic Commerce Research,
  • Quarterly Journal of Electronic Commerce

Monday, July 17, 2006

WiMax Tariff by Alternet

http://www.uht.com.ua/ru/plain445

speed from 128kbps ($19.6) to 2048 kbps ($198)

Tuesday, July 4, 2006

Network aware multimedia

Optimizing End-to-End Performance
One-to-Many Muticast Network Performance Optimization
  • Narada
  • Amplicast
Papers
[PPT] Low Latency Wireless Video Over 802.11 Networks Using Path Diversity

無線網路量測專題參考資料

Tools and Techniques for Measurement of IEEE 802.11 Wireless Networks - group of 3 »
F Li, M Li, R Lu, H Wu, M Claypool, R Kinicki - winmee.org
... host with weak wireless connectivity, and hence low WLAN capacity, the performance
of all ... a flow’s end-to-end delay which is detrimental to VoIP and some ...

Research on 802.11n for Multimedia

802.11n MAC design and system performance , 2005

A Study of the Performance of Voice over IP over IEEE 802.11 Wireless Local Area Networks, 2005

Evaluation of contention free bursting in IEEE 802.11 e wireless LANs, 2005

Sunday, June 25, 2006

張耀仁簡歷



(Vitaes in English)

現職
  • 中原大學電子工程學系教授,中原大學計算機中心主任
經歷
  • 美國伊利諾大學香檳校區電機與電腦工程系客座助理教授(3)
  • 中原大學電子工程學系研究所專任副教授(15)
  • IBM 亞太區電子商務顧問 (3)
  • 蕃薯藤(Yam.com)數位科技協理 (4)
  • 蕃薯藤(Yam.com)數位科技顧問 (2)
參與專業組織

國家

參與專業組織

身分

美國

ACM,ACM SIGACCESS

會員

美國

IEEE

會員

中華民國

中華民國資訊學會

永久會員

中華民國

消基會電信與傳播委員會

委員

中華民國

消基會消費性電子委員會

委員


認證

  • IBM電子商務專家全球認證
  • IBM DB2 Architect 全球認證

大事紀

  • 民國92 擔任行政院研考會無障礙空間巡迴講座
  • 民國92 擔任國民健康局多媒體資料中心建置計畫協同主持人
  • 民國92 擔任工業局無線寬頻計畫分項計畫主持人
  • 民國91 參與行政院研考會政府服務共通平台規範起草
  • 民國91 擔任行政院政府入口網"我的e政府"計畫協同主持人
  • 民國91 擔任行政院體委會整合型運動入口網計畫協同主持人
  • 民國91 擔任消費者文教基金會通訊委員會委員 (至今)
  • 民國91 擔任行政院研考會評選委員 (至今)
  • 民國91 擔任行政院新聞局電視妙管家網站計畫主持人
  • 民國90 擔任中華民國運籌學會學術組委員,參與推動企業電子化
  • 民國89 獲選中華民國策略聯盟推廣協會榮譽會員,獲獎原因為在策略聯盟創新育成相關領域之理論研究卓越實務經驗豐富
  • 民國88 擔任中華民國電子商務推廣協會常務理事,參與推動商業電子化
  • 民國87 通過IBM電子商務專家認證
  • 民國86 參與國家資訊月政府主題館-電子商務與電子支付系統規劃與建置
  • 民國86 接受桃園廣播電臺長期專訪,為國內資訊教育普及化盡一份心力
  • 民國86-88 擔任IBM亞太區電子商務技術顧問,將國外最新電子商業技術引入國內
  • 民國85-88 擔任中原大學登山社指導老師,獲得教育部頒獎為全國最優社團
  • 民國84 自美國伊利諾大學返台,加入中原大學電子系擔任副教授從事網際網路相關研究與教學

張耀仁研究計畫

  • 計畫名稱 計畫內擔任之工作 起訖年月 補助或委託機構 執行情形 經費總額
  • 綠色採購網建置與維運 共同主持人 6/2005~12/2005 行政院環保署 已結案 720,000
  • 衛生保健便民網站維運 主持人 1/2005~12/2005 行政院衛生署 已結案 5,940,000
  • 無線寬頻示範應用計畫(台南縣) 主持人 11/2004~12/2004 經濟部工業局 已結案 2,750,000
  • 無障礙服務入口網站委外建置案 主持人 6/2004~11/2005 僑委會 已結案 4,000,000
  • 政府入口網"我的e政府"計畫 共同主持人 5/2004~12/2004 行政院研考會 已結案 2,933,000
  • 電視妙管家網站計畫 主持人 12/2003~6/2004 行政院新聞局 已結案 1,260,000
  • 衛生保健便民網站建置 主持人 11/2003~12/2004 行政院衛生署 已結案 9,900,000
  • 無線寬頻示範應用計畫(台北縣) 主持人 9/2003~2/2004 經濟部工業局 已結案 10,780,000
  • 多媒體資料中心建置計畫 共同主持人 7/2003~11/2003 國民健康局 已結案 4,118,000
  • 兒童環保教育網站 主持人 3/2003~9/2003 行政院環保署 已結案 1,380,000
  • 教育入口網 共同主持人 3/2003~7/2003 台北市教育局 已結案 9,190,000
  • 整合型運動入口網計畫 共同主持人 10/2002~12/2005 行政院體委會 已結案 21,000,000

中文著作

(vitaes )(Publications of Yao-Jen Chang)

Local Conferences
Books
  • 1. 張耀仁,電子商務系統,高立圖書公司,2001年1月。ISBN 957-584-624-9
Articles
  1. 張耀仁, 對抗垃圾郵件大作戰, 消費者報導, 300 期, 民95.04 頁24-29
  2. 張耀仁, 網路電話 搶便宜, 消費者報導, 287 期, 民94.03 頁47-50
Technical Report
  • 1. Y. J. Chang, “Design and Implementation of Green Procurement Website” Environment Protection Administration, Dec. 2005.
  • 2. Y. J. Chang, “Maintenance Report of Health Portal” Department of Health, Dec. 2005.
  • 3. Y. J. Chang, “Final Report of Pilot Project of Wireless Broadband Services in Tainan”, Industry Development Bureau, Dec. 2004.
  • 4. Y. J. Chang, “Portal Accessibility Design and Implementation”, Overseas Chinese Affairs Commission, Nov. 2005.
  • 5. Y. J. Chang, “Final Report Media Watch Website”, Government Information Office, Dec. 2004.
  • 6. Y. J. Chang, “Health Portal Design and Implementation”, Department of Health, Dec. 2004.
  • 7. Y. J. Chang, “Pilot Project of Wireless Broadband Services in Taipei County”, Industry Development Bureau, Feb. 2004.
  • 8. Y. J. Chang, “Environment Protection Portal for Kids”, Environment Protection Administration, Sep. 2003.
  • 9. Y. J. Chang, “Final Report of Educational Portal”, Taipei City Government, Jul. 2003.
  • 10. Y. J. Chang, “Midterm Report of Sports Portal”, National Council on Physical Fitness and Sports, Dec. 2002.
  • 鄧治東,張淑慧,張耀仁,饒忻,黃惠民,杜志挺,張豫虎,翁清松,洪穎怡,馮道偉,許政行,王晃三,"工程學生的問題創意思解課程教學設計研究",國科會 專題研究成果報告(NSC-87-2512-S-033-001). 計畫編號:NSC-87-2512-S-033-001,民國87年6月。

Saturday, June 17, 2006

Trends of Networking

ADSL -> FTTH
802.11 a/b/g -> 802.11n
3G -> HSDPA (3.5G) -> 4G, WiMax
CD -> Paid Music Download
DTV, IPTV, DVB-H
VoWiFi
Wireline Phone -> VoIP

Friday, June 9, 2006

June 10, 2006 Class

  • Wi-Fi Community Network and Business Model <fon>
  • Mobile Phones for Advertising <ZagMe>
  • Ad Hoc Wireless Network
  • Test Design of Mobile Phones

Saturday, May 27, 2006

Ethereal Protocol Analyzer

a software that capture the packets and analyze their protocols. Free to download from
http://www.ethereal.com

Google Maps Mania

Take a look at what others mash up Google maps.
http://googlemapsmania.blogspot.com/

satellite tracking

Check out http://www.n2yo.com

Testing of Cellular handsets

discussion in class with photos.

Friday, May 26, 2006

June 3, 2006 畢業典禮, 停課一次

Spread Spectrum, Technology behind 3G

On May 27, we will talk about spread spectrum, the technology used in GPS, 3G, and 802.11b.

Sunday, May 21, 2006

Saturday, May 20, 2006

Vision 2010

Beyond the Mobile Frontier by NTT DoCoMo

4G

4G communication at 100 Mbit/s while moving, and 1 Gbit/s while stationary.

Pervasive networks
  • simultaneously connected to several wireless access technologies (Wi-Fi, UMTS for example) and can seamlessly move between them (handover)
  • smart-radio aka cognitive radio technology to efficiently manage spectrum use and transmission power
  • mesh routing protocols
  • 4G may use OFDM , and also OFDMA.
  • packet switching only
In general, a generation is defined by the result of technology changes over a 10-15 year time frame. Thus, 4G would refer to whatever is deployed in the 2010-2015 period, assuming 3G deployment spans the 2000-2009 period.

See Wikipedia 4G

Friday, May 19, 2006

2G, 2.5G, 3G

cellular: 2G/3G
channel bandwidth: 200 kbps (8 time slots) / 5 MHZ
multiple access: TDMA / CDMA

SMS, Short Message Service, up to 160 bytes
SMS, EMS use control channels while MMS use regular channels shared by data and voice.

Data Services
  • GSM, Circuit Switching, 9.6 (*2), 12.4(*2, HSCSD)
  • GPRS, General Packet Radio Services, Packet Switching, 9.05 kbps/13.4 kbps (*1,2,3,4), speed denoted as *u*d
  • EDGE, 3 times of speed of GPRS by using 8-PSK instead of binary GMSK
  • 3G, 384kbps, up to 2 Mbps, uplink is 128 kbps
  • 3.5G HSDPA (High Speed Downlink Packet Access) 8-10 Mbps (R5), and 20 Mbps (R6) by MIMO, uplink is 384 kbps

Worldwide deployment of HSDPA

WAP, content bearer protocol, certificate, cookies
WML, wireless markup language (or HTML-C as in i-Mode, XHTML)
MMS, Multimedia Messaging Service

Tariff
3G, GPRS vs. GSM
flat rate, data volume or air time

Security features
WIM: A Wireless Identity Module (WIM) can contain
both trusted and client certificates, private keys
and algorithms needed for WTLS handshaking,
encryption/decryption and signature generation.
The WIM module can be placed on a SIM card
and is then referred to as a SWIM card.

authentication and billing of wlan with SIM card
  • authentication
  • billing
  • coverage of both 802.11 & GPRS/3G
  • roaming across APs and WISPs
  • user base

Web 2.0

What is Web 2.0? By Andy Budd of Clearleft Ltd

What Is Web 2.0 by Tim O'Reilly

知識經濟時代的農產變革: 生產履歷介紹

台灣第一條有身分證的健康魚

  • 歐盟2005年1月1日起實施食品訊息可追蹤系統(食品追蹤紀錄管理辦法),未來若食品無法提供生產履歷,將無法進入歐盟市場
  • 日本於e-Japan戰略中也已明確指出「在2010年前實現所有食品生產履歷」的目標,並於2004年12月1日起開始實施牛隻生產履歷紀錄制度。
「生產履歷」的技術問題

  • 產銷履歷源自Food Traceability,也就是食品可追蹤性,「追蹤農產品的生產至末端銷售完成的履歷過程」。
  • 資訊不對稱以及觀望心態是最需要克服的難題之一。
各國不同的生產履歷做法

Saturday, May 6, 2006

5-13-2006 停課一次

Wireless LAN Antennas

<commercial products>

Multiradio Wireless Mesh

  • Architecture and Algorithms for an IEEE 802.11-based Multi-channel Wireless Mesh Network (A Raniwala, Prof Chiueh) in proc of IEEE Infocom '05 [pdf] [slides]
Comment:

未來研究的方向是考慮 802.11 n,
以及 VoIP 所需要的 QoS
這篇paper 裡面的演算法不適用於802.11n
因此需要新的演算法
在mesh 架構下使用 802.11n 效能應該會大有提升.
  • Centralized Channel Assignment and Routing Algorithms for Multi-channel Wireless Mesh Networks (A Raniwala, K Gopalan Prof Chiueh) - in ACM SIGMOBILE Mobile Computing and Communications Review (MC2R) April '04 issue [pdf]

Antenna Diversity for 802.11 b/g

Refer to PC Card and Mini PCI Antenna Integration Notes - group of 2 »
AD Considerations, D Tips, P Testing, OIPC Cards - 2600hz.net
... for integration into portable ICT devices (for example, notebook computers, handheld ...
one or two antennas, and possibly an antenna diversity switch. ...

Sunday, April 30, 2006

WLAN Regulations

You can use this WLAN Link Planner for link budget, this reference for Part 15.247, and this EIRP calculator.

Installing Wi-Fi Antennas

Safety Advice- If you are mounting an antenna outdoors make sure you have fitted a lightning arrestor! The last thing you want is thousands and thousands of volts of the good stuff hitting your WLAN equipment and computer network.

Regulatory Advice - Make sure you are not exceeding the maximum power for WLAN networks. There is a limit of 20Dbi on all 802.11b equipment.

<full article>

Friday, April 21, 2006

A Technical Tutorial on the IEEE 802.11 Protocol

link

802.11n: MIMO-OFDM

Chapter 15: A Peek Ahead at 802.11n: MIMO-OFDM 802.11 Wireless Networks: The Definitive Guide, Second Edition (PDF)

Quadrupling Wi-Fi speeds with 802.11n (Intel)

Airgo 240 Mbps
(Faster than wired)
Field Test Results

802.11

IEEE 802.11 - Wikipedia, the free encyclopedia
(with useful links there)

WiMAX: Opportunity or Hype?

link

WiMAX: Opportunity or Hype?
MICHAEL RICHARDSON
University of Colorado at Boulder - General
PATRICK S. RYAN
University of Colorado at Boulder, Interdisciplinary Telecommunications Program; Catholic University of Leuven (KUL) - Interdisciplinary Center for Law and Information Technology (ICRI)

Thursday, April 20, 2006

Is Wi-Fi Roaming Really Seamless?

read this article

Although it takes only 68 ms to switch to an AP from another,
it can disrupt applications up to 5 seconds.

UMA Follow-Up

Placing F/MC Under Enterprise Control
  • Alternative to UMA

F/MC Watch: VoIP Fallout from CTIA
  • Kyocera demos dual-mode CDMA/Wi-Fi handset with Boingo
  • Boingo partners with Kineto to extend UMA service to hotspots

Monday, April 10, 2006

Sunday, April 2, 2006

Homework 4-1-2006 Mobile Social Software, Part 2

Pick the assigned service from the list.
Analyze the service based on
  • technology
  • what it works
  • business models
  • trends
Prepare 5~10 slides to turn in your homework. Please mail it to
yjchang at cycu dot edu dot tw before next time we weet in class.

參閱簡報製作原則
如何使用線上學術資源

Saturday, April 1, 2006

Read this blog using Google Reader

go

Try others such as

  • news.yam.com
  • 中時電子報
  • New York Times

sites that use google maps

Take a look at the following site:
HousingMaps
Google Maps Transparencies
Google Maps Nighttime!
Track visitors to your website
Google Map links for Unesco World Heritage Sites
Frappr

CSMA/CA & 802.11

802.11 PCF & DCF
802.11 RTS & CTS
802.11 QoS

animations (two Applets about CSMA/CA Simulations)
http://wps.aw.com/aw_kurose_network_3/0,9212,1406346-,00.html

packet radio with Aloha

packet radio with Aloha in Lectures 13 & 14 of MIT Data Communication Networks Course

We will also cover the wireless location privacy protection as discussed in the paper by Schilit et al.

evolution of contention based protocols:
1. ALOHA
2. CSMA (Carrier Sense Multiple Access)
3. CSMA/CD (collision detection) -> IEEE 802.3 (Ethernet, 100M, 1Gbps)

OSI Reference Model

Computer Networks
OSI Reference Model
(Lecture 1 in Ref.)

Text: 1.9~1.12

wireless applications for Ticketing

demo

Sunday, March 26, 2006

如何使用線上學術資源

論文全文搜尋與下載請多利用
http://scholar.google.com
http://metasearch.lib.cycu.edu.tw:8000/muse/logon/cycu/index.html

別人的讚美要仔細聽!

由於停車不便,小孩上才藝課都由我騎機車接送。
一日,接他們下課時,坐在後座的兒子說:「媽,妳內向嫻淑。」
喔!從來沒有聽過就讀四年級的兒子這麼稱讚過我,一陣溫暖、甜蜜湧上心頭!
想再聽一次,於是,我問:「兒子,你說什麼?」
他說:「媽,妳剛剛逆向行駛。」