Physical Sciences and Mathematics Commons^™

Incorporating Support For Event Algebra In Relational Stream Systems, Vijay Dialani, Inderpal Narang

Vijay Dialani

Data stream management systems make prominent use of a subset of relational algebra for describing continuous queries. The phenomenon has highlighted the wide spread use of declarative interface for stream data manipulation. As relational algebra is set oriented while the data streams are essentially sequences of data, there exist some cases where the use of relational algebra to describe processing in a data stream management system is counter productive. Supporting event algebraic operations on stream systems represents one such case. We have developed a combination of sequence algebra and relational algebra that is capable of supporting event algebra. Our alternative …

Computer Skills, Gender, And Technostress In Higher Education, Sonya Shepherd

Sonya S. Gaither

The creation of computer software and hardware, telecommunications, databases, and the Internet has affected society as a whole, and particularly higher education by giving people new productivity options and changing the way they work (Hulbert, 1998). In the so-called “information age” the increasing use of technology has become the driving force in the way people work, learn, and play (Drake, 2000). As this force evolves, the people using technology change also (Nelson, 1990). Adapting to technology is not simple. Some people tend to embrace change while others resist change (Wolski & Jackson, 1999). Before making a decision on whether to …

A History Of Political Experience, Leslie Marsh

Leslie Marsh

This book survives superficial but fails deeper scrutiny. A facile, undiscerning criticism of Lectures in the History of Political Thought (LHPT) is that on Oakeshott’s own account these are lectures on a non-subject: ‘I cannot detect anything which could properly correspond to the expression “the history of political thought”’ (p. 32). This is an entirely typical Oakeshottian swipe – elegant and oblique – at the title of the lecture course he inherited from Harold Laski. If title and quotation sit awkwardly we should remember that Oakeshott never prepared the text for publication – a fortiori he did not prepare it …

Collaborative Games: Lessons Learned From Board Games, Jose Zagal, Rick Jochen, Hsi Idris

Jose P Zagal

Collaborative mechanisms are starting to become prominent in computer games, like massively multiplayer online games (MMOGs); however, by their nature, these games are difficult to investigate. Game play is often complex and the underlying mechanisms are frequently opaque. In contrast, board games are simple. Their game play is fairly constrained and their core mechanisms are transparent enough to analyze. In this article, the authors seek to understand collaborative games. Because of their simplicity, they focus on board games. The authors present an analysis of collaborative games. In particular, they focus on Reiner Knizia’s LORDOFTHERINGS, considered by many to be the …

Compressed Dictionaries: Space Measures, Data Sets, And Experiments

Ankur Gupta