A partial solution for lossless source coding with coded side information

This paper considers the problem, first introduced by Ahlswede and Körner in 1975, of lossless source coding with coded side information. Specifically, let X and Y be two random variables such that X is desired losslessly at the decoder while Y serves as side information. The random variables are encoded independently, and both descriptions are used by the decoder to reconstruct X. Ahlswede and Körner describe the achievable rate region in terms of an auxiliary random variable. This paper gives a partial solution for the optimal auxiliary random variable, thereby describing part of the rate region explicitly in terms of the distribution of X and Y

On Lossless Coding With Coded Side Information

This paper considers the problem, first introduced by Ahlswede and Korner in 1975, of lossless source coding with coded side information. Specifically, let X and Y be two random variables such that X is desired losslessly at the decoder while Y serves as side information. The random variables are encoded independently, and both descriptions are used by the decoder to reconstruct X. Ahlswede and Korner describe the achievable rate region in terms of an auxiliary random variable. This paper gives a partial solution for an optimal auxiliary random variable, thereby describing part of the rate region explicitly in terms of the distribution of X and Y

An annotated checklist of Wisconsin sap and short-winged flower beetles (Coleoptera: Nitidulidae, Kateretidae)

A survey of Wisconsin Nitidulidae and Kateretidae yielded 78 species through analysis of literature records, museum and private collections, and three years of field research (2000-2002). Twenty-seven species (35% of the Wisconsin fauna) represent new state records, having never been previously recorded from the state. Wisconsin distribution, along with relevant collecting techniques and natural history information, are summarized. The Wisconsin nitidulid and kateretid faunae are compared to reconstructed and updated faunal lists for Illinois, Indiana, Michigan, Minnesota, Ohio, and south-central Canada. Literature and distributional records suggest at least 11 additional nitidulid species may occur in Wisconsin

The link between M1 and the monetary base in the 198O's

Monetary policy ; Money supply

Alternative measures of the monetary base: what are the differences and are they important?

Monetary policy

Analysis of routine communication in the air traffic control system

The present project has three related goals. The first is to describe the organization of routine controller-pilot communication. This includes identifying the basic units of communication and how they are organized into discourse, how controllers and pilots use language to achieve their goals, and what topics they discuss. The second goal is to identify the type and frequency of problems that interrupt routine information transfer and prompt pilots and controllers to focus on the communication itself. The authors analyze the costs of these problems in terms of communication efficiency, and the techniques used to resolve these problems. Third, the authors hope to identify factors associated with communication problems, such as deviations from conventional air traffic control procedures

Managing Green IS - Integrating the Triple Bottom Line into the IS Value Chain: A framework for sustainable IS solutions

This session presentation will provide a framework to examine decisions about sustainable, or “green,” IS solutions withmultiple stakeholders and multiple factors. The framework explicitly integrates the triple bottom line and IS value chainperspectives. This enables a holistic assessment of the factors involved in the decision-making process, accounting fortangibles (e.g. cost savings from energy reduction) and important intangibles (e.g. social responsibility) as well as indirectfactors (e.g. GHG reduction). In particular, a representative case study is presented that examines the specific issue of“greening a data center.” The framework is used to assess the various complex trade-off considerations for strategic optionssuch as “replace existing servers with energy efficient servers” and “consolidate servers utilizing virtualization.” This leads to adecision process that accounts for both traditional business case (i.e. cost-profit analysis) and the sustainability business case.The green data center case study is only one non-trivial example use of the Green IS assessment and decision framework.The Green data center case study details how the framework helped identify the various factors and considerations that aroseand how these are used ultimately to formulate a confident decision on which Green data center strategy to adopt. The paperfurther provides a general analysis of the use, benefits, and limitations of the framework. The green data center case study isused to illustrate how the framework establishes the conditions and boundaries by which one strategy may be chosen overanother, the sensitivities and accuracy needed of the required inputs, and the confidence in the resulting assessments anddecisions