The Kalman Filter
we help students master the Kalman Filter
my_library
Uber-style pricing is coming for everything
More and more industries are adopting “dynamic pricing” — and consumers aren’t happy.
After Appalachian Hospitals Merged Into a Monopoly, Their ERs Slowed to a C
Ballad Health was granted the nation’s largest state-sanctioned hospital monopoly in 2018. Since then, its emergency rooms have become more than three times as slow.
Why Some Songs Makes Everyone Want to Dance
A syncopated rhythm may prompt our brain to find the beat
‘Priority target’: The businessman at the top of Australia’s intelligence h
The suspect’s identification by intelligence agencies raises big questions for one of Australia’s neighbours and about China’s attempts to wield influence in the Pacific.
3 Surprising Hit Song Trends That No One Expected
A new report by Billboard’s highlights three surprising hit song trends after an analysis of the Billboard radio charts.
The Race to Reinvent CPR
A new, high-tech approach called ECPR can restart more hearts and save more lives. Why aren’t more hospitals embracing it?
How (and why) to run SQLite in production: RubyConf Taiwan 2023
This is my personal site, where I write about Ruby, programming, and any of my varied fascinations.
Why are Russians so stingy with their smiles?
In the US, smiling is a reflexive gesture of goodwill, but Russians view it as a sign of stupidity. Social psychology research could help explain this cultural contrast.
The Aluminum Foil WiFi Hack You Probably Didn't Know
Subscribing to a high-speed internet plan may be all well and good, but it won't matter that much if there are places in your house where you can't get any WiFi signal at all. WiFi behaves similarly to radio or light waves which means obstructions like walls or floors can affect…
The world's semiconductor industry hinges on a single quartz factory in Nor
The deposits formed 380 million years ago when Africa collided with North America.
Ad execs sound off on Amazon’s DSP dilemma
Many ad executives have found Amazon's DSP to be cumbersome to use, lacking in measurement capabilities and limited in the range of inventory it offers for purchase.
To Make Your Product a Habit, Start With These Powerful Triggers
Learn how to create customer habits using powerful triggers like time, mood, location, and social influences. Discover techniques to boost product usage.
Why 18-year-old Canadian Emily Nash is sharing her unique brain with scienc
CTV W5 puts the spotlight on 18-year-old Emily Nash, who appears to be the first Canadian, and among the youngest people in the world, to have a rare but extraordinary super memory.
Tired of Streaming? Home-Grown 'Free Blockbuster' Libraries Are Trying to O
In 2019 Los Angeles film/TV producer Brian Morrison painted Blockbuster's logo onto an old newspaper box — and then filled it up with used DVDs. "The Free Blockbuster movement slowly gained traction," reports the New York Times — aided at times by social media…
Silicon carbide substrate costs falling as larger diameters adopted
Number of 8-inch SiC fabs under construction or planned globally reaches 11
A Short Guide to Hard Problems
What’s easy for a computer to do, and what’s almost impossible? Those questions form the core of computational complexity. We present a map of the landscape.
‘Very few have balls’: How American news lost its nerve
In 2024, it’s harder than ever to get a tough story out in the United States of America.
Linux Crisis Tools
A Spark Extinguished
At the height of the Great Famine in 1960, a group of students exiled to the countryside launched a magazine that dared to tell the truth. Their convictions, and the love they bore for one another, were put to the test.
What Is Gravity, and How Does It Work?
Your most frequently asked questions about gravity, answered. Now with more spooky action at a distance!
Hand Signals at The Stork Club
The Stork Club was a famous Manhattan night club that was founded by Oklahoma native and ex-bootlegger Sherman Billingsley (ed. note: amazing name), and operated continuously from 1929-1965. The NYC hot spot – which was located on 53rd Street near Fifth Avenue – was a…
Sign Dining
The tradition of discreet communication among staff at the Stork Club lives on at the restaurant Eleven Madison Park.
Usher Signals
Many ushers communicate during church services using a sequence of hand signals called the “National Silent Uniform System.” Here are some of the central elements of these signals.
How great leaders inspire action | Simon Sinek | TED
Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. Simon Sinek presents a simple but powerful model for how leaders inspire action, starting with a golden circle and the question "Why?" His examples…
How scientists traced a mysterious covid case back to six toilets
When wastewater surveillance turns into a hunt for a single infected individual, the ethics get tricky.
Being Caitlin Clark: Inside the world of the player who redefined the game
She overcame trust issues and chartered a yacht. Now Caitlin Clark is ready for March.
A mind is a terrible thing to change
5 Useful Visualizations to Enhance Your Analysis
Use Python’s statistical visualization library Seaborn to level up your analysis.
Semantic HTML cheat sheet
There are hundreds of semantic tags available to help describe the meaning of your HTML documents....
Coal, the dirtiest fossil fuel, is preparing for a long goodbye
Output hit a record last year, and producers expect a future where coal will be required to balance renewable energy for decades.
The Heartbreak of an English Football Team
The Netflix series “Sunderland ’Til I Die” serves as a thesis both for fandom and for the inevitability of its disappointments.
Hackers Found a Way to Open Any of 3 Million Hotel Keycard Locks in Seconds
The company behind the Saflok-brand door locks is offering a fix, but it may take months or years to reach some hotels.
Rails: How Rails Find Generators
All of us rails developers have used generators before. Either it is when we run rails new or rails generate scaffold. These commands…
March Madness Spotlights a Sport Relegated to Pittsburgh’s Shadows: Basketb
A city that pro basketball abandoned in the early 1970s, and whose college teams have only flirted with relevance for decades, has basketball roots that run deep.
Meet the OCR Toolkit: A Versatile Python Package for Seamlessly Integrating
In the present digital world, converting images of text into editable text, a process known as Optical Character Recognition (OCR), is a common task. However, many people struggle with complicated code to make OCR work for researchers and developers, making what should be a…
How to choose clothes for longevity, not the landfill
Buying cheap clothing online can be satisfying, but it comes with not-so-hidden environmental costs. When designer Diarra Bousso was growing up in Senegal, her family bought and created new outfits for longevity rather than on impulse — an intention she carries forth in her…
A ‘high butt factor’ might be an NFL Draft prospect’s most prized asset
For years, the humble human haunches have been key indicators as football scouts evaluate players.
This stretchy electronic material hardens upon impact just like “oobleck”
Researchers likened material’s structure to a big bowl of spaghetti and meatballs.
5 Best Online Writing Tools In 2024
Read our article to learn about the best online writing tools out there to help you with your writing projects.
Decoding U.S. Tariff Classifications: A Comprehensive Guide
Involved in international trade? U.S. custom regulations can lead to cost savings, compliance benefits, and a smoother trade process.
Waffle House’s Magic Marker System
I thought for sure that I’d previously written about the secret jelly packet & pickle-based system that chefs at the Waffle House use to “store” all of the orders that come in for food during service, but I can’t find it in the a
How the Rails params hash works
This article was originally written by Jeffery Morhous on the Honeybadger Developer Blog. In Ruby on...
More American millionaires are considering leaving the U.S. Here's why
Rising political tensions could be scaring millionaires away from the country
Good Database Migration Practices for Your Ruby on Rails App using Strong M
Let's explore Strong Migrations, a gem that can help you maintain good practices with your database migrations in Ruby on Rails.
Elizabeth Goodspeed on the delicate art of nostalgia in branding
Our US editor-at-large dissects the emotional potency of heritage branding and how companies try (and sometimes fail) to capitalise on it.
Exploring 5 Docker Alternatives: Containerization Choices for 2024
In the realm of containerization, Docker has long been hailed as the go-to platform for developers....
Lessons from More Than 1,000 E-Commerce Pricing Tests
At most small and medium-sized e-commerce retailers, prices are typically set and updated in an ad hoc fashion without one clear owner. The process often starts by using a gross margin target, followed by some comparison with competitors, and then some adjustments from there…
Spotify API: How To Create a Data Set of Songs
A Fun Tutorial using Python, JSON, and Spotify API! You might find it more comfortable...
Understanding databases: A comprehensive guide to different types for begin
Learn about different types of databases and find out how to design a functional and efficient database system, and compare popular RDBMSs like MySQL, Oracle, and PostgreSQL.