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Author: engineering

Minimizing Power-Supply Voltage Drop on PCBs

Despite the widespread availability and use of low-power components, today’s printed circuit boards (PCBs) can require a significant amount of current, with boards drawing 50, 100, and even 200 A in common use. Whenever current is delivered to a load, there will be IR-based voltage drop, and designers must take this loss into account when laying out the board and placing the supply, dc supply rails, and loads. For consistent and reliable operation, it’s important to ensure this drop doesn’t…

New vulnerability in kidney cancer — ScienceDaily

A UT Southwestern researcher led a team that identified a new vulnerability in kidney tumors, the 10th most common cause of cancer death in men and women. In their investigation of the most common type of kidney cancer, called clear cell renal cell carcinoma (ccRCC), Qing Zhang, Ph.D., and his colleagues identified a possible way to treat tumors while sparing nearby healthy tissue. Their study uncovers a mechanism by which either the loss of a protein that protects against cancer…

Edible ‘security tag’ to protect drugs from counterfeit — ScienceDaily

Manufacturing prescription drugs with distinct markings, colors, shapes or packaging isn’t enough to protect them from counterfeiting, U.S. Drug Enforcement Administration reports have shown. Purdue University researchers are aiming to stump counterfeiters with an edible “security tag” embedded into medicine. To imitate the drug, a counterfeiter would have to uncrack a complicated puzzle of patterns not fully visible to the naked eye. Fake medicine is a thriving business, making up at least 10% of global pharmaceutical commerce while also claiming…

Better Tools, 3D Materials Are Improving Design

As part of Machine Design’s 90th anniversary issue in January, we’ve asked industry experts to take a look at the present and future of technology and how it will impact the design and operation of manufacturing over the next decade. Q: What products do you see that are currently solving design engineers’ problems? Frattarola: Design and manufacturing simulation tools continue to improve each year, enabling designers to model their products and test them within a virtual environment. This has greatly…

Stuck in the Middle: How to Choose Your Next Bandpass Filter

Bandpass filters are used in both wired and wireless communications systems, sensor applications, instrumentation, medical applications, and many others. When it comes to these types of applications, the goal is to pass signals of interest from point A to point B, while reducing noise and unwanted radiation from the signal source, other equipment, and the environment. Often different bandpass filters can be combined in a switched filter bank (see figure) that integrate the filters and switches, thereby providing better insertion…

Billions of quantum entangled electrons found in ‘strange metal’ — ScienceDaily

In a new study, U.S. and Austrian physicists have observed quantum entanglement among “billions of billions” of flowing electrons in a quantum critical material. The research, which appears this week in Science, examined the electronic and magnetic behavior of a “strange metal” compound of ytterbium, rhodium and silicon as it both neared and passed through a critical transition at the boundary between two well-studied quantum phases. The study at Rice University and Vienna University of Technology (TU Wien) provides the…

Internships Prepare IT Grad for Employment

One of the MU Engineering students who crossed the stage during commencement ceremonies at the Hearnes Center Dec. 13 started work as a full-time employee at Shelter Insurance in Columbia less than a month later. M. Andrew Kammerich earned dual degrees in information technology (IT) and digital storytelling from MU and says the combination is a perfect fit for his new role as a user experience (UX) designer for Shelter Insurance. “I’m interested in more than how a website looks,…

Powering Pinterest ads analytics with Apache Druid

Filip Jaros | Software Engineer, Partner Engineering Weihong Wang | Engineering Manager, Partner Engineering The Change When we launched Promoted Pins in 2014, we chose Apache HBase as our database to store and serve all of our reporting metrics. At the beginning of our ads business, this was an appropriate choice because the number of reporting features needed and overall traffic was low. Additionally, HBase already had a proven record in the industry at this time, and we knew how…

Keeping LinkedIn professional by detecting and removing inappropriate profiles

Our members place their trust in us, and expect and deserve a safe and trusted community where they can express themselves professionally. We are constantly investing in a variety of systems (Automated Fake Account Detection at LinkedIn, Defending Against Abuse at LinkedIn’s Scale, and How We’re Protecting Members From Fake Profiles) to help automatically detect and remediate behaviors that violate our Terms of Service, such as spam, harassment, scams, and account takeovers. In this post, we’ll detail our approach for…

For Your Ears Only: Personalizing Spotify Home with Machine Learning

This article is based on the keynote given by Tony Jebara at TensorFlow World in Santa Clara, California, October 2019. You can watch the presentation here. Machine learning is at the heart of everything we do at Spotify. Especially on Spotify Home, where it enables us to personalize the user experience and provide billions of fans the opportunity to enjoy and be inspired by the artists on our platform. This is what makes Spotify unique. Across our engineering community, we…