communications of the acm

Departments

5;Editor’s;Letter

On P, NP, and Computational Complexity By Moshe Y. Vardi

6;Letters;To;The;Editor

How to Think About Objects

9;In;the;Virtual;Extension

10 BLOG@CACM

Rethinking the Systems Review Process

Tessa Lau launches a discussion about the acceptance criteria for HCI systems papers at CHI, UIST, and other conferences.

12;CACM;Online

A Preference for PDF By David Roman

31 Calendar

103;Careers

Last;Byte

112;Puzzled Rectangles Galore By Peter Winkler

News

13 Turning Data Into Knowledge Today’s data deluge is leading to new approaches to visualize, analyze, and catalog enormous datasets.

By Gregory Goth

16 Security in the Cloud

Cloud computing offers many advantages, but also involves security risks. Fortunately, researchers are devising some ingenious solutions. By Gary Anthes

19 Career Opportunities

What are the job prospects for today’s—and tomorrow’s— graduates?

By Leah Hoffmann

Viewpoints

24;Economic;and;Business;Dimensions The Divergent Online News Preferences of Journalists and Readers Reading between the lines of the thematic gap between the supply and demand of online news.

By Pablo J. Boczkowski

27 Education

K– 12 Computational Learning Enhancing student learning and understanding by combining theories of learning with the computer’s unique attributes. By Stephen Cooper, Lance C. Pérez, and Daphne Rainey

30;Legally;Speaking

Why Do Software Startups Patent (or Not)?

Assessing the controversial results of a recent empirical study of the role of intellectual property in software startups.

By Pamela Samuelson

33;Privacy;and;Security

Why Isn’t Cyberspace More Secure? Evaluating governmental actions—and inactions—toward improving cyber security and addressing future challenges.

By Joel F. Brenner

23 Wide Open Spaces

The U.S. Federal Communications Commission’s decision to open frequencies in the broadcast spectrum could enable broadband networks in rural areas, permit smart electric grids, and more.

By Neil Savage

36 Viewpoint

Sensor Networks for the Sciences Lessons from the field derived from developing wireless sensor networks for monitoring active and hazardous volcanoes.

By Matt Welsh

In Support of Computer Science Teachers and the CS TA A call to action to clarify the computer science definition to K– 12 students. By Duncan Buell

Association for Computing Machinery Advancing Computing as a Science & Profession

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