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The Protection of Information in Computer Systems

by Jerome H. Saltzer, Michael D. Schroeder , 1975
"... This tutorial paper explores the mechanics of protecting computer-stored information from unauthorized use or modification. It concentrates on those architectural structures--whether hardware or software--that are necessary to support information protection. The paper develops in three main sections ..."
Abstract - Cited by 815 (2 self) - Add to MetaCart
This tutorial paper explores the mechanics of protecting computer-stored information from unauthorized use or modification. It concentrates on those architectural structures--whether hardware or software--that are necessary to support information protection. The paper develops in three main

Graphs over Time: Densification Laws, Shrinking Diameters and Possible Explanations

by Jure Leskovec, Jon Kleinberg, Christos Faloutsos , 2005
"... How do real graphs evolve over time? What are “normal” growth patterns in social, technological, and information networks? Many studies have discovered patterns in static graphs, identifying properties in a single snapshot of a large network, or in a very small number of snapshots; these include hea ..."
Abstract - Cited by 534 (48 self) - Add to MetaCart
How do real graphs evolve over time? What are “normal” growth patterns in social, technological, and information networks? Many studies have discovered patterns in static graphs, identifying properties in a single snapshot of a large network, or in a very small number of snapshots; these include

Earthquake Shakes Twitter Users: Real-time Event Detection by Social Sensors

by Takeshi Sakaki, Makoto Okazaki, Yutaka Matsuo - In Proceedings of the Nineteenth International WWW Conference (WWW2010). ACM , 2010
"... Twitter, a popular microblogging service, has received much attention recently. An important characteristic of Twitter is its real-time nature. For example, when an earthquake occurs, people make many Twitter posts (tweets) related to the earthquake, which enables detection of earthquake occurrence ..."
Abstract - Cited by 484 (3 self) - Add to MetaCart
Twitter, a popular microblogging service, has received much attention recently. An important characteristic of Twitter is its real-time nature. For example, when an earthquake occurs, people make many Twitter posts (tweets) related to the earthquake, which enables detection of earthquake occurrence promptly, simply by observing the tweets. As described in this paper, we investigate the real-time interaction of events such as earthquakes, in Twitter, and propose an algorithm to monitor tweets and to detect a target event. To detect a target event, we devise a classifier of tweets based on features such as the keywords in a tweet, the number of words, and their context. Subsequently, we produce a probabilistic spatiotemporal model for the target event that can find the center and the trajectory of the event location. We consider each Twitter user as a sensor and apply Kalman filtering and particle filtering, which are widely used for location estimation in ubiquitous/pervasive computing. The particle filter works better than other compared methods in estimating the centers of earthquakes and the trajectories of typhoons. As an application, we construct an earthquake reporting system in Japan. Because of the numerous earthquakes and the large number of Twitter users throughout the country, we can detect an earthquake by monitoring tweets with high probability (96 % of earthquakes of Japan Meteorological Agency (JMA) seismic intensity scale 3 or more are detected). Our system detects earthquakes promptly and sends e-mails to registered users. Notification is delivered much faster than the announcements that are broadcast by the JMA. 1.

Imagined Communities

by Tom Anderson , 1991
"... This is a field report of a three-week experience in Japan, centered on art education in their cultural and social contexts. Beginning with this overarching focus, the themes and patterns that structure this report were emergent, rising from the experience. Those supporting themes are: being in Japa ..."
Abstract - Cited by 802 (5 self) - Add to MetaCart
This is a field report of a three-week experience in Japan, centered on art education in their cultural and social contexts. Beginning with this overarching focus, the themes and patterns that structure this report were emergent, rising from the experience. Those supporting themes are: being

Large shareholders and corporate control

by Andrei Shleifer, Robert W. Vishny, Andrei Shleifer, Robert W. Vishny - Journal of Political Economy , 1986
"... Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of ..."
Abstract - Cited by 977 (15 self) - Add to MetaCart
of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at

Theory of the Firm: Managerial Behavior, Agency Costs and Ownership Structure

by Michael C. Jensen, William H. Meckling , 1976
"... This paper integrates elements from the theory of agency, the theory of property rights and the theory of finance to develop a theory of the ownership structure of the firm. We define the concept of agency costs, show its relationship to the ‘separation and control’ issue, investigate the nature of ..."
Abstract - Cited by 2780 (12 self) - Add to MetaCart
This paper integrates elements from the theory of agency, the theory of property rights and the theory of finance to develop a theory of the ownership structure of the firm. We define the concept of agency costs, show its relationship to the ‘separation and control’ issue, investigate the nature

Human-Computer Interaction

by Alan Dix, Sandra Cairncross, Gilbert Cockton, Russell Beale, Robert St Amant, Martha Hause , 1993
"... www.bcs-hci.org.uk Find out what happened at HCI2004 Interacting with … music aeroplanes petrol pumps Published by the British HCI Group • ISSN 1351-119X 1 ..."
Abstract - Cited by 582 (18 self) - Add to MetaCart
www.bcs-hci.org.uk Find out what happened at HCI2004 Interacting with … music aeroplanes petrol pumps Published by the British HCI Group • ISSN 1351-119X 1

Being There -- Putting Brain, Body, and World Together Again

by Andy Clark , 1997
"... ..."
Abstract - Cited by 1067 (17 self) - Add to MetaCart
Abstract not found

WordNet: An on-line lexical database

by George A. Miller, Richard Beckwith, Christiane Fellbaum, Derek Gross, Katherine Miller - International Journal of Lexicography , 1990
"... WordNet is an on-line lexical reference system whose design is inspired by current ..."
Abstract - Cited by 1945 (9 self) - Add to MetaCart
WordNet is an on-line lexical reference system whose design is inspired by current

A survey of corporate governance

by Andrei Shleifer, Robert W. Vishny - JOURNAL OF FINANCE , 1997
"... ..."
Abstract - Cited by 1658 (25 self) - Add to MetaCart
Abstract not found
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