Homework 12-22-2007

1. Compare the business models of Metropolitan Wi-Fi Networks in the world.

Model	Service provider	Charge	Mission
BAY area Network	Google,earthLink	Free by advertising	city-wide wireless service
NYCwireless	volunteer group	free	Network access can be found in places previously not available
Taipei	Wi-fly company	NT399/month	Wireless Taipei Company corporate with Gov.
Wireless Philadelphia	earthLink	$19.95/month	help all citizens, businesses, schools, and community organizations the visitor , and streamlining City services.
FON	Linksys,google,skype ebay	Free by share	Free wifi around the world

2. Read the abstracts of the full papers, and then make your comments.
Robin Kay, Developing a comprehensive metric for assessing discussion board
effectiveness, British Journal of Educational Technology, Vol 37 No5 2006. pp. 761-783

Note: You may need to stay in the IP range of CYCU to download the article.

This paper will find out a way to evaluate the discussion board. The variable are thread, location of message within thread, author (student vs. educator), subject line clarity, time of posting, response time from previous message, number of times message was read, number of words, primary purpose, message quality, difficulty level of topic, knowledge level, processing level and use of external resources. I think the hardest part is how the student find the information they want if someone had asked before. And the purpose of the discussion board should be concerned. Not only for education, but also some technology, news discussion board which may cause other variable to show up. The participants are form different career have diversity of purpose. It remains more topics for research.

Homework 12-15-2007

1. Read the abstract of the full paper, and then make your comments.
Feng Fua, Lianghuan Liua, and Long Wang. Empirical analysis of online social networks in the age of Web 2.0, Physica A: Statistical Mechanics and its Applications Volume 387, Issues 2-3, 15 January 2008, Pages 675-684


The paper abstrat-
The growing of WWW turns another name called Web2.0, new application and way of connecting people. For example, blogs and social networking site make people communicate more easier and faster. Two of the social networking sites in China will be analyzed. They will show the networks have small-world and scale-free feature. Also, the distribution of the topological distance will be studied. The correlations between degree and degree, clustering coefficient and degree, number of page views and degree ,respectively, are discussed in the paper. This paper will show blogging network have disassortative mixing pattern and SNS is the assortative. The research and analysis of online social networks will explain the self-organizing structural characteristics.

my comments-
It's interesting that blogs and social networking site are empirical analyzed. Both are online social networks in the age of Web2.0. I think blogs want to keep the the simple and easy to write down anything. People will find the blog and share to others(blogger in google). The connection is created in comments. Social networking site is creating a connection after you registering it. And it contains more functions for interaction. For example, every visitor will be saved to make more connections.



what are assortative and disassortative mixing?

Homework 12-8-2007

1. Read the abstracts of the full papers, and then make your comments.

Yao-Jen Chang, Tseng-Yun Wang, Shi-Kai Tsai, Yu-Chia Chuang, "Action Science Approach to Experimenting Nonprofit Web 2.0 Services for Employment of Individuals with Mental Impairments" 2007 International Workshop on Social Media Analysis in conjunction with ACM/IEEE Web Intelligence 2007. (EI)

The nonprofit organization has the different value of using technology. How to set up a minimum budget for them and increase the working efficiency for them is present in this paper
.

Yao-Jen Chang and Chiu-Hui Chen, "Methodology and Evaluation of Teaching Computer Programming Laboratory with Social Media," ED-Media 2007, Vancouver, Canada, June 25-29, 2007.

The fast growing of blogs turn in several presenting ways. As teaching blog, students are expected to get more convenience for learning a subject. I think that is only for the student who cares about the subject. For other students, sometime the hw copying can be serious.

HW 12/8

中原大學圖書館線上資料庫，進入拓墣產研資料庫，

1. 查詢近期WiMax 產業分析報告ㄧ篇，作成100字摘要。

WiMax is getting hot in 2008.
"Last mile" for developing countries.
3G standard listed by ITU(International Telecommunications Union)
5 kinds of access for different application-> mobility (fixed point, walking, vehicles )
fixed WiMax vs Mobile WiMax

consumer application
NB,UMPC->PDA,MP3

Modulation scheme
frequency band(3.8G 60%)

Sprint Nextel WiMax(largest under developing project)

infrastructure of the WiMax is the key to make the new page of the next generation communication


2. 簡述 Qualcomm收購Airgo與RFMD藍牙團隊的策略佈局為哪三項?

1. need the key technology of next generation
2. full communication solution for existing consumer product
3. against the giant Intel. The success of the Centrino in notebooks.

Bonus Problem:
3. 依據 WiMAX晶片業者發展現況此研究報告，目前全球主要WiMAX 晶片業者有哪幾家?

Intel
Picochip
Fujitsu
SEQUANS
Wavesat
Runcom
Beceem

Presentation

Digital Sign System for Indoor Wayfinding for the Visually Impaired
PPT

lecture note

IT Report
Forrester Research
Gartner Report

IMS (IP multimedia Subsystem)

Wi-Fi VS HSDPA

similar : handover, multimedia(<5Mbps), 3~5m, Qos
difference : physical, initial cost(infrastructure), TCO(total cost ownership)

handover(without disconnection)

Wi-Fi, contention base, no QoS, data communication

Vioce(delay must < 250ms)


presentation 1
Feedback from the auditor.