yyhh.org

Travel notes on limited or awkward airport Wi-Fi access in Paris, Madrid, and Frankfurt, with an update from August 2013.

Fixes for problems encountered when upgrading a MacBook Pro from Snow Leopard to Mountain Lion, including broken SSH public-key access.

Experiences with several vacuum cleaners in a home with two long-haired cats, comparing cleanup on carpet, hardwood, and other surfaces.

Notes on a pdfLaTeX pixel-dimension setting used while troubleshooting a blurry screenshot in a camera-ready conference paper.

Recording a registry fix used when Windows 7 or XP grays out the screen saver's logon-on-resume option and triggers workplace security alerts.

Reflections on Machine Learning That Matters and why computer science research should have practical impact, with encouragement to try industrial internships.

A reference list of contract and payment forms gathered while managing home remodeling and repair projects.

A first attempt at sewing baby cloth shoes as a gift for a niece, finished with handmade pompoms and notes on following the tutorial.

Testing the iPhone 4s camera with Mayori as the model, starting with cat portraits taken in natural light.

Using Clojure to count maps between sets while working through early exercises in Lawvere's Conceptual Mathematics and learning category theory.

Building terminal Vim on OS X with Homebrew's Python support, including formula changes and a check of the Python interpreter Vim actually uses.

A personal introduction to learning category theory, motivated by a preference for unifying principles over memorizing mathematical techniques.

A cat-breed book in the vet's waiting room leads Tom's family to identify him as a Nebelung, comparing his appearance and personality with the breed.

The first twelve markers from a paternal ancestry DNA test, with an explanation of Y-STR results, haplotypes, and why SNP testing adds confirmation.

A household review of the Canine Cat Scratcher, covering its modern design, ordering experience, and how Tom and Mayori received it.

Questions about family origins and Han identity lead to a hypothesis about paternal ancestry and a decision to investigate with a Y-DNA test.

A Manhattan chocolate-shopping trip, a shortlist of three shops, and a gift from La Maison du Chocolat that proved a hit at home.

Trying The Catnip Collection on an HP TouchPad as an interactive cat toy, and finding that its constantly moving objects fail to hold the cats' interest.

Lessons from planning an independent trip to Italy, reducing a mountain of travel advice to a practical two-page itinerary.

A bookmarked CSV reader and writer recommended by a colleague, saved for a future trial and review.