acmqueue

Queue is published 6 times per year, with issues available via an app on iPhone and iPad and Android devices or via a browser-based 'digital edition' (DE).

ACM professional members have free access to the apps. Non-members can purchase an annual subscription for $19.99 or a single issue for $6.99 through the Apple or Google stores.



March/April 2017 Table of Contents

March/April 2017 acmqueue


Features

The IDAR Graph
- Mark A. Overton

UML comes up short in conveying the hierarchy of a design, making it difficult for humans to understand exactly how it's put together. The IDAR graph is a clearer alternative for representing object-oriented designs, resulting in cleaner software with fewer bugs.

The Calculus of Service Availability
- Ben Treynor, Mike Dahlin, Vivek Rau, Betsy Beyer

Most software services and systems should aim for almost-perfect reliability. Google maintains an aggressive SLO of 99.99 percent availability (the "four nines") on its products. Here's how it happens.

Data Sketching
- Graham Cormode

The vast scale of information today means making some compromises—for example, maintaining a summary, or sketch, of data rather than every last bit. Here we look at four innovative algorithmic ideas behind data sketching.


Columns / Departments

Kode Vicious
The Observer Effect

- George Neville-Neil

Frequently polling a system for information can easily overtax it. For it to be useful, you need to find just the right frequency, depending on the task at hand.

The Soft Side of Software
Conversations with Technology Leaders: Erik Meijer

- Kate Matsudaira

Renowned for his innovative work in software development, Meijer has many engineering and leadership lessons to share. Great leaders in this field share a desire for constant learning and a passion for technology.

Escaping the Singularity
Side Effects, Front and Center!

- Pat Helland

The work that software developers do often results in side effects. These unintended consequences may be just too much information—but they may also be relevant.

Research for Practice
- Technology for Underserved Communities
- Personal Fabrication

- Peter Bailis

Finding ways to support the technology needs of underserved communities is a worthy goal. Tawanna Dillahunt looks at three efforts to do so. Then Stefanie Mueller and Patrick Baudisch examine the future of 3D printers, especially their potential for innovation among nontechnical users.

Full issue list



ACM Members

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Non-members

Non-members have the option to join the ACM or subscribe to the magazine as an app or through their browsers, as explained below.



App

Click on your favorite merchant store below to subscribe or to order single copies or back issues for viewing on your preferred mobile app.


The app is free to download. ACM professional members can access issues by signing in to the app using their ACM account.

Non-members can purchase an annual subscription for $19.99 or a single issue for $6.99 through the Apple or Google store.

Subscription to the app does not grant access to the digital edition, and vice-versa.


Browser-based Digital Edition

Read acmqueue on your desktop.

One-Year Subscription: Begin a year-long subscription starting with the current issue.

Single Copies and Back Issues: See the Table of Contents of each issue and order single copies or back issues.

Read the first six pages of the latest issue here




FAQ


Why is the text so small?

The maximum text size on newer, high-resolution (more than 2 megapixel) device screens may be too small for some individuals to read easily. Use the links above to preview the first six pages of an issue. If you find the text too small, you may prefer to use the browser-based version of the app until this problem is resolved.


I'm having trouble viewing the browser version of the app

Make sure you have the Flash plugin and JavaScript enabled. Try turning off any ad-blocking software. Make sure you're using one of the more recent browser releases. We suggest the minimums of Chrome 23, Firefox 19, IE 10, and Safari 5.


How do I get a PDF of the issue?

We offer PDF versions of all articles. If you go to an individual article on the site, you should see a PDF icon in the upper right e.g. http://queue.acm.org/detail.cfm?id=2844732

Or, if you go to the table of contents for an issue in the Digital Library, you should see links to download PDFs for all articles in the issue e.g. http://dl.acm.org/citation.cfm?id=2838344&preflayout=flat

Or, if you log in to the browser version of the app, you should see a download icon in the upper right that will download the full PDF of the entire issue https://mydigitalpublication.com/publication?m=38068&l=1

Or, again in the browser version of the app, click the lower-right 'More' icon ("...") to reveal additional options, including a print function.

An additional option is to click the 'Contents' icon in the upper right (looks like the old Windows logo) which will pull up links to all articles without formatting or images. You may need to click the screen to expand the top and bottom menus to reveal the icons.


How do change my subscription?

ACM members should contact ACM (https://myacm.acm.org/dashboard.cfm) to update their passwords, renew subscriptions, etc.

iOS users should contact Apple to update their passwords, renew subscriptions, etc.

For all subscriptions and issue purchases for the Android and browser-version of the app, contact subscriptions@queue.acm.org.


How do I get the navigation menu/panels to reappear?

Just tap the screen in an area that is not a link.

For the browser version, you may need to right-click. (ctrl-click on Mac).


Explain the members. non-members, subscription thing again?

ACM professional members (not student members, not users with plain web accounts) get full access to acmqueue on iOS, Android, or as a browser "app" (for lack of a better term). They simply login using their member account login.

Everyone else (non-members) have the choice of (a) joining the ACM and getting full access to acmqueue (among other things), (b) buying an annual subscription to the magazine as an iOS app, Android app, or browser app, or (c) buying a single issue, again as an app on their phone or browser.


Certain things look odd in Opera

The Opera browser is not supported, sorry. We only saw one CSS bug in Opera on Android, but otherwise it should still look the same as most other platforms.


I just found out my subscription has expired, why wasn't I notified?

ACM members's accounts are handled through the ACM https://myacm.acm.org/dashboard.cfm

iOS subscribers should be getting notification from Apple.

For Android subscribers and browser version subscribers there is currently no mechanism to remind them of subscription cancelations. Sorry.


I have a student ACM membership. Why can't I log in?

Unlimited access to acmqueue is granted to professional memberships only.


I have a subscription to the app. Can I use that to log in to the browser version?

No, subscription to the iOS app, Android app, and browser version do not permit access to either of the other versions.

For other questions, contact acmqueue at queue@acm.org