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Association for Computing Machinery

Magazine: December 2009 | Volume 16, No. 2

Introduction

Staying disciplined during an interdisciplinary degree

Social learning and technical capital on the social web

Social learning and technical capital on the social web

The social Web is a set of ties that enable people to socialize online, a phenomenon that has existed since the early days of the Internet in environments like IRC, MUDs, and Usenet (e.g. 4, 12). People used these media in much the same way they do now: to communicate with existing friends and to meet new ones. The fundamental difference was the scale, scope, and diversity of participation.

By Sarita Yardi

HTML | In the Digital Library
Tags: Collaborative and social computing systems and tools, Computer supported cooperative work, Computing / technology policy, Design, Education, Management, Theory, World Wide Web

Grafitter

Grafitter

"Know thyself". Carved in stone in front of the Temple of Apollo at Delphi, that was the first thing people saw when they visited the Oracle to find answers. The benefits of knowing oneself are many. It fosters insight, increases self-control, and promotes positive behaviors such as exercise and energy conservation.

By Ian Li, Anind Dey, Jodi Forlizzi

HTML | In the Digital Library
Tags: Algorithms, Application layer protocols, Collaborative and social computing, Data compression, Design, Hypertext / hypermedia, Management, Multi / mixed media creation, Multimedia information systems, Record storage alternatives, Theory

Privacy challenges and solutions in the social web

FREE CONTENT FEATURE

Privacy challenges and solutions in the social web

Research related to online social networks has addressed a number of important problems related to the storage, retrieval, and management of social network data. However, privacy concerns stemming from the use of social networks, or the dissemination of social network data, have largely been ignored. And with more than 250 million active Facebook (http://facebook.com) users, nearly half of whom log in at least once per day [5], these concerns can't remain unaddressed for long.

By Grigorios Loukides, Aris Gkoulalas-Divanis

HTML | In the Digital Library
Tags: Collaborative and social computing, Collaborative and social computing systems and tools, Computer crime, Computer supported cooperative work, Computing / technology policy, Design, Management, Security, Security and privacy, Theory, World Wide Web

Are your friends who they say they are?

FREE CONTENT FEATURE

Are your friends who they say they are?

How sure are you that your friends are who they say they are? In real life, unless you are the target of some form of espionage, you can usually be fairly certain that you know whom your friends are because you have a history of shared interests and experiences. Likewise, most people can tell, just by using common sense, if someone is trying to sell them on a product, idea, or candidate. When we interact with people face-to-face, we reevaluate continuously whether something just seems off based on body language and other social and cultural cues.

By Roya Feizy, Ian Wakeman, Dan Chalmers

HTML | In the Digital Library
Tags: Algorithms, Data mining, Design, Evaluation of retrieval results, Information retrieval, Management, Performance, Personalization

Don't ask me

Don't ask me

Searching for information online has become an integral part of our everyday lives. However, sometimes we don't know the specific search terms to use, while other times, the specific information we're seeking hasn't been recorded online yet.

By Gary Hsieh

HTML | In the Digital Library
Tags: Collaborative and social computing systems and tools, Computer supported cooperative work, Design, Information theory, Management, Storage network architectures, Systems theory, Theory, World Wide Web