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Communications of the ACM

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Lest We Remember
From Communications of the ACM

Lest We Remember: Cold-Boot Attacks on Encryption Keys

DRAM retains its contents for several seconds after power is lost. Although DRAM becomes less reliable when it is not refreshed, it is not immediately erased, and...

From Communications of the ACM

Technical Perspective: A Chilly Sense of Security

Many systems rely on keeping a master key secret. But technological progress can undermine old assumptions.

Integrating NAND Flash Devices onto Servers
From Communications of the ACM

Integrating NAND Flash Devices onto Servers

In this paper, we examine the use of Flash storage in the server domain. Wear-out has the potential to limit the use of Flash in this domain. To seriously consider...

From Communications of the ACM

Technical Perspective: Integrating Flash Devices

Flash memory nowadays seems to be in every discussion about system architecture. Sure enough, flash memory boasts...

From Communications of the ACM

Relative Fitness Modeling

Relative fitness is a new approach to modeling the performance of storage devices. In contrast to a conventional model, which predicts the performance of an application's...

From Communications of the ACM

Technical Perspective: Disk Array Models for Automating Storage Management

Large disk arrays are everywhere. When we shop at an Internet retailer, the product and account data come from a disk...

From Communications of the ACM

Learning and Detecting Emergent Behavior in Networks of Cardiac Myocytes

We address the problem of specifying and detecting emergent behavior in networks of cardiac myocytes, spiral electric waves in particular, a precursor to atrial...

From Communications of the ACM

Technical Perspective: Where Biology Meets Computing

Alan Turing died in 1954 in his laboratory after eating a cyanide-laced apple. During his last years, Turing had become interested in bio-chemical systems. He had...

From Communications of the ACM

Error Correction Up to the Information-Theoretic Limit

Ever since the birth of coding theory almost 60 years ago, researchers have been pursuing the elusive goal of constructing the "best codes," whose encoding introduces...

From Communications of the ACM

Technical Perspective: The Beauty of Error-Correcting Codes

Error-correcting codes are the means by which we compensate for interference in communication, and are essential for the accurate transmission and storage of digital...

The Complexity of Computing a Nash Equilibrium
From Communications of the ACM

The Complexity of Computing a Nash Equilibrium

Traditionally, computational problems fall into two classes: those that have a polynomial-time algorithm and those that are NP-hard. However, the concept of NP-hardness...

From Communications of the ACM

Technical Perspective: The Complexity of Computing Nash Equilibrium

Computer science and game theory go back to the same individual, John von Neumann, and both subjects deal with the...

Building Secure Web Applications With Automatic Partitioning
From Communications of the ACM

Building Secure Web Applications With Automatic Partitioning

Swift is a new, principled approach to building Web applications that are secure by construction. Swift automatically partitions application code while providing...

From Communications of the ACM

Technical Perspective: Tools for Information to Flow Securely and Swift-ly

Back in the old days of the Web (before 1995), Web browsers were fairly simple devices. The server's Web interface was simple enough...

Voyagers and Voyeurs
From Communications of the ACM

Voyagers and Voyeurs: Supporting Asynchronous Collaborative Visualization

This article describes mechanisms for asynchronous collaboration in the context of information visualization, recasting visualizations as not just analytic tools...

From Communications of the ACM

Technical Perspective: Finding and Telling Stories with Data

Visual analysis, a powerful method for finding and telling stories with data, is moving from research into widespread use.

Seam Carving for Media Retargeting
From Communications of the ACM

Seam Carving for Media Retargeting

Traditional image resizing techniques are oblivious to the content of the image when changing its width or height. In contrast, media (i.e., image and video) retargeting...

From Communications of the ACM

Technical Perspective: Customizing Media to Displays

A mind-boggling array of displays differ greatly in resolutions and aspect ratios. But  images and videos are captured at fixed resolutions and aspect ratios, and...

From Communications of the ACM

Technical Perspective: Patching Program Errors

C programmers are are all too familiar with out-of-bounds memory errors. The paper here presents an intriguing technique for...

From Communications of the ACM

Technical Perspective: One Size Fits All: An Idea Whose Time has Come and Gone

Beginning in the early to mid-1980s the relational model of data has dominated the DBMS landscape. Moreover, descendents of...
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