307,547 research outputs found
City networks in cyberspace and time : using Google hyperlinks to measure global economic and environmental crises
Geographers and social scientists have long been interested in ranking and classifying the cities of the world. The cutting edge of this research is characterized by a recognition of the crucial
importance of information and, specifically, ICTs to citiesâ positions in the current Knowledge Economy. This chapter builds on recent âcyberspaceâ analyses of the global urban system by arguing for, and demonstrating empirically, the value of Web search engine data as a means of understanding cities as situated within, and constituted by, flows of digital information. To this end, we show how the Google search engine can be used to specify a dynamic, informational
classification of North American cities based on both the production and the consumption of Web information about two prominent current issues global in scope: the global financial crisis, and global climate change
Discovery Is Never By Chance: Designing for (Un)Serendipity
Serendipity has a long tradition in the history of science as having played a key role in many significant discoveries. Computer scientists, valuing the role of serendipity in discovery, have attempted to design systems that encourage serendipity. However, that research has focused primarily on only one aspect of serendipity: that of chance encounters. In reality, for serendipity to be valuable chance encounters must be synthesized into insight. In this paper we show, through a formal consideration of serendipity and analysis of how various systems have seized on attributes of interpreting serendipity, that there is a richer space for design to support serendipitous creativity, innovation and discovery than has been tapped to date. We discuss how ideas might be encoded to be shared or discovered by âassociation-huntingâ agents. We propose considering not only the inventorâs role in perceiving serendipity, but also how that inventorâs perception may be enhanced to increase the opportunity for serendipity. We explore the role of environment and how we can better enable serendipitous discoveries to find a home more readily and immediately
How Do Tor Users Interact With Onion Services?
Onion services are anonymous network services that are exposed over the Tor
network. In contrast to conventional Internet services, onion services are
private, generally not indexed by search engines, and use self-certifying
domain names that are long and difficult for humans to read. In this paper, we
study how people perceive, understand, and use onion services based on data
from 17 semi-structured interviews and an online survey of 517 users. We find
that users have an incomplete mental model of onion services, use these
services for anonymity and have varying trust in onion services in general.
Users also have difficulty discovering and tracking onion sites and
authenticating them. Finally, users want technical improvements to onion
services and better information on how to use them. Our findings suggest
various improvements for the security and usability of Tor onion services,
including ways to automatically detect phishing of onion services, more clear
security indicators, and ways to manage onion domain names that are difficult
to remember.Comment: Appeared in USENIX Security Symposium 201
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TechNews digests: Jan - Mar 2010
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