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Category: Electronics Engineering

Improving User Engagement Through Subtle Changes: Updating the Book Concierge

By David Eads and Christina Rees | December 12, 2014 The NPR year-end 2013 Book Concierge was a big hit. Instead of writing a bunch of lists, the books team solicited over 200 short reviews by critics and staff and put them into a single, beautiful website designed to make discovering great books fun. Readers loved it. For the 2014 Book Concierge, our goal was to build on last year’s success and resist the urge to rewrite the…

How IMVU Builds Web Services: Part 3

In this 3-part series, IMVU senior engineer Bill Welden describes the means and technology behind IMVU’s web services. Part 3: Documents and Links In the previous entry in this series I described how IMVU uses a structured network model to implement the uniform contract for our REST services and showed how they might apply to a set of services for a hypothetical high school scheduling system. Under this model we have Node Groups (represented by the different colors of circles in…

Apply NOW for a spring internship with NPR Visuals

Hey! Are you a student? Do you design? Develop? Love the web? …or… Do you make pictures? Want to learn to be a great photo editor? If so, we’d very much like to hear from you. You’ll spend the spring working on the visuals team here at NPR’s headquarters in Washington, DC. We’re a small group of photographers, videographers, photo editors, developers, designers and reporters in the NPR newsroom who work on visual stuff for [npr.org]. Our work varies widely,…

UW-Stout Packaging Alumni Social @ Pack Expo 2014

Packaging Matters: You’re Invited: UW-Stout Packaging Alumni Social @ Pack Expo 2014 Pages You’re Invited: UW-Stout Packaging Alumni Social @ Pack Expo 2014 Please join us at the UW-Stout Packaging Alumni Reception being held during Pack Expo International 2014!  The event will be a great opportunity for you to reconnect with classmates, network with your fellow alumni in the packaging industry, and meet some of the current program faculty and students.  UW-Stout Packaging Alumni SocialTuesday, November 4th @ 6:30PM The…

Optimizing WebGL Shaders by Reading D3D Shader Assembly

We are optimizing WebGL shaders for the Intel GMA 950 chipset, which is basically the slowest WebGL-capable device we care about. Unfortunately, it’s a fairly common chipset too. On the plus side, if we run well on the GMA 950, we should basically run well anywhere. 🙂 When you’re writing GLSL in WebGL on Windows, your code is three layers of abstraction away from what actually runs on the GPU. First, ANGLE translates your GLSL into HLSL. Then, D3DX compiles…

How IMVU Builds Web Services : Part 2

In this 3-part series, IMVU senior engineer Bill Welden describes the means and technology behind IMVU’s web services. Part 2: Nodes and Edges The Uniform Contract constraint of the REST discipline means that IMVU web applications are able to provide functionality to many different web applications in a robust and reusable manner. There are, of course, many different ways of implementing a uniform contract. At IMVU, we have chosen a structured network model – a graph consisting of nodes, which represent…

Reader Mailbag: ECT vs Burst, where is the data?

Reader Mailbag: Chainalytics Packaging Engineers Answer Your Questions! Dan writes: We came across your previous blog article and hoped that you might be able to help us out with a data question. Our product is shipped in a double-wall, corrugated box for the secondary protective packaging. We’ve seen a hundred versions of the following table comparing the bursting test and edge crush test standards: We’re familiar with the two types of testing, and we’re sure that the table is accurate. What we…

Moving Code Forward – Yammer Engineering – Medium

Everybody loves a good rewrite. It feels great to throw away a crusty, years-old codebase and replace it with something shiny and new. Rewrites come with some serious tradeoffs though, and in a lot of cases, the decision to start again from scratch is not the right call at all. In the seven-year history of yammer.com’s Frontend codebase, we’ve never thrown the whole thing away and started over. Why? Well, let’s take a quick look at the characteristics of Yammer’s…

Everything our app template does: July 2014 edition

The NPR News Apps team, before its merger with the Multimedia team to form Visuals, made an early commitment to building client-side news applications, or static sites. The team made this choice for many reasons — performance, reliability and cost among them — but such a decision meant we needed our own template to start from so that we could easily build production-ready static sites. Over the past two years, the team has iterated on our app template, our “opinionated…

Plate and Frame Heat Exchanger Cleaning Video

When a heat exchanger is continuously used, it will gradually lose the ability to transfer heat as the fouling and scaling develops on the surface of the heating material. When this occur, any heat exchanger will become inefficient and needs cleaning. When a heat exchanger is clean, it needs to be stopped. Hence, that’s why there is a need to have a back up heat exchanger in a particular section of the plant. Otherwise, the plant will either run with…