2005年2月27日 星期日
2005年2月26日 星期六
2005年2月21日 星期一
Features of Skype
1. peer to peer, no server required, therefore, no operation cost like cellular communications
2. overlay, not relying on existing Internet protocols beyond Layer 4, resilient to malfunctions of Internet services
3. scalable, using supernodes among every 500 nodes, adaptive to constant configuration changes
4. high quality codec for crystal voice
5. strong penetration to NAT and firewalls
6. free for now and maybe forever for on-net calls
7. implementation of packet voice
8. consumes reasonable bandwidth, consumes significant CPU
9 . teleconference, voice communications for 5 parties at most
10. millions people online all the times, number keep rising.
11. provide presence like messengers, great feature compared to old phones
2. overlay, not relying on existing Internet protocols beyond Layer 4, resilient to malfunctions of Internet services
3. scalable, using supernodes among every 500 nodes, adaptive to constant configuration changes
4. high quality codec for crystal voice
5. strong penetration to NAT and firewalls
6. free for now and maybe forever for on-net calls
7. implementation of packet voice
8. consumes reasonable bandwidth, consumes significant CPU
9 . teleconference, voice communications for 5 parties at most
10. millions people online all the times, number keep rising.
11. provide presence like messengers, great feature compared to old phones
2005年2月20日 星期日
Tips for achieving better performance
1. 繳交作業：
1.1 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開頭) 申請免費帳號。主旨欄請用以下格式 "網際網路應用系統設計作業一 " 以加速助教登錄作業成績。
1.2 僅限老師特別指定時，以電子郵件 盡量使用@cycu.edu.tw 繳交作業，郵件主旨欄請用以下格式 "網際網路應用系統設計作業一 會計
2. 發表學習心得：以Blog (部落格) 發表學習心得，此部份將對Participation成績有益
3. 課前與課後閱讀：參考課程 Blog http://iapblog.blogspot.com/ 的Reading Assignments 以及定期公告。課前預習有助於提高上課效果，課後閱讀是學生必做的功課。
Syllabus: 網際網路應用系統設計
Time: Friday at 13:10~16:00
Place: 電子 416
Grading Policy: Participation (Presence, Challenging and Answers, Proactiveness) 50%, Homework 50%
Instructor: Associate Professor Yao-Jen Chang
Email: yjchang@cycu.edu.tw
Teaching Assistant:
Email:
Textbook
1. 張耀仁，劉永信, 電子商務系統, 高立書局, 2001年1月三版.
Course Outline
1. 網際網路的趨勢
Firefox, RSS, Blog, Google, Skype, VoIP, All IP Network
2. 網際網路基本概念
Origin, Evolution, WWW, HTTP
3. Web 技術
State of the art, N-Tier architecture, HTML, CGI, Database, design for scalability
4. Web Services
XML, SOAP, WSDL
5. 電子商務系統設計
Industry Trend, Entry Barrier, Ecology, Business Opportunities, Best Practices
Competitive Strategies, Differentiation, Pricing, Niche. Implementation
6. 網路安全系統設計
Public Key Infrastructure, Digital Signature, SSL, Firewall, NAT, Watermark
7. 數位學習系統設計
User demands, Trends, Entry Barriers, Opportunities, Business Strategies
8. 無障礙網路空間設計
Accessibility, principles, implementations, verification, certification
2005年2月19日 星期六
2/21 Homework
1. Create your own blog. 請至 http://www.blogger.com 申請, 請以你的學號 (s開頭) 申請免費帳號。
2. (C) Exercise 1.1
3. (C) Exercise Appendix A #7
4. Reading Assignment: (C) Appendix A
Due 3/7/2005 at 18:50
Please write your homework at your own blog. Then post your blog URL here using
Post a comment so that your submission can be timemarked and your classmates can take a look of your work.
符號說明
2. (C) Exercise 1.1
3. (C) Exercise Appendix A #7
4. Reading Assignment: (C) Appendix A
Due 3/7/2005 at 18:50
Please write your homework at your own blog. Then post your blog URL here using
Post a comment so that your submission can be timemarked and your classmates can take a look of your work.
符號說明
(C) 張耀仁，劉永信, 電子商務系統, 高立書局, 2001年1月三版.
(L) Craig Larman UML 與樣式徹底研究 (Applying UML and Patterns, 2/e) Prentice-Hall, 中文版, 趙光正翻譯, 2002.
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