張耀仁

星期四, 12月 28, 2006

星期六, 12月 23, 2006

星期五, 12月 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

星期一, 12月 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.

星期日, 12月 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.

http://minstral.blogspot.com/2006/10/web-20.html

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.

星期六, 12月 16, 2006

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:

Real time satellite tracking
HousingMaps: a mashup of Craigslist and Google Maps
Map your own photes.
More applications of Google Maps

References:

What is Web 2.0? By Andy Budd of Clearleft Ltd

What Is Web 2.0 by Tim O'Reilly

星期六, 12月 09, 2006

Unlicensed Mobile Access

UMA Technology

seamless handoff from WiFi to cellular networks,
converging the fixed and mobile worlds
under the control and billing of the mobile operator

UMA Architecture

a new network element (the UMA Network Controller, UNC)
UNC interfaces into the core network via existing 3GPP specified A/Gb interfaces.
protocols for the secure transport of GSM/GPRS signalling and user plane traffic over IP.

SIP
in contrast, uses the Internet for routing

Issues

WLAN couldn’t really support it due to the hand-off issues among APs.

Vendors

Extricom selling 8 and 24-port WLAN switches
client on the network associates to the switch, not the radio/AP
No de-association or re-association

UMA in the office

星期日, 11月 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.