The JAMA Pediatrics research article explains how the study asked the question, “Is there an association between screen-based media device access or use in the sleep environment and sleep quantity and quality?” Researchers conducted a meta-analysis (examining the results of many studies and combining the results) by searching through 20 previous studies, involving more than 125,000 children, that examined sleep patterns of children between 6 and 19 years old. Continue reading →
I am reading Walter Issacson’s book, The Innovators. What is interesting is that his book begins by describing the work of Lady Ada Lovelace, who was the daughter of the poet Lord Byron. Ada Lovelace is the mind that first imagined and even wrote about the possibilities of computers and programming way back in the 1840’s. Naturally the technical abilities and the tools were not available when she came up with her vision of programming, but almost everything subsequent to her work is based on the foundation she created.
The March 2015 post that I’ve reblogged below is about the amazing women who figured out how to program one of the first computers, ENIAC, right after World War II.
People — young and old — enjoy learning about the first computer in the United States, ENIAC, booted up in 1946. Every 21st Century learner needs to know about this amazing machine and the story of the first programmers.
A few weeks ago I visited Philadelphia and had a special opportunity to visit ENIAC. This huge, old-fashioned computer isowned by the Smithsonian Institution (read this article), but parts of it are still housed in a building at the University of Pennsylvania, almost exactly where it was originally set up. ENIAC could be programmed to do extensive calculations much faster than humans could calculate.
The letters in ENIAC stand for Electronic Numerical Integrator And Computer.
It’s great fun to think about how technology improves our lives, especially given how much people worry about digital world problems. For me one of the best changes in our 21st Century lives has been the new and improved ways that I can listen to music, podcasts, and radio programs.
One of my Sonos wireless speakers
These days with our Sonos Play:1 wireless sound system, my family listens to a vastly expanded range of music, radio stations, podcasts, and much more. Tune speakers sit at strategic locations around the house, and though we still regularly listen to “old-fashioned” radios, our wireless system is gradually taking over because of its amazing sound quality. The first time we played music on one of our Sonos speakers we joked that it felt like the musicians were in the room with us.
Using the Sonos app, each Play:1 speaker — we now have four — is easily connected to our wi-fi network, and then it runs through a sound test to become familiar with its room. The app also allows us to group the speakers and play the same music throughout the house or keep them separate, thereby allowing any member of the family to listen to different media on the closest Play:1 — once each speaker played different music at the same time for people in each of the rooms. Perfect for any household with diverse listening tastes! Continue reading →
Those of us who want to maintain a modicum of privacy in our digital and mobile phone lives, not to mention our 21st Century kids’ lives, may be interested in a question answered by writer J.D. Biersdorfer, on his New York Times Personal Tech blog.
Answering the question, How Your Phone Knows Where You Have Been?,Biersdorfer explains lots more about the GPS function on a mobile phone, describes what’s collected, and tells how to fine out how Apple and Google use the information. He also describes, with screen shots, how to reset or disable the information collecting. It turns out that shutting off location services, or leaving them on and allowing just a few apps to use location data, is not enough. On the iPhone, more privacy settings, in a category called system services, are buried inside the location list.
Parents and teachers may want to learn a lots more about how a mobile phone keeps track of a user’s whereabouts and this column provides lots of information. Interestingly, some parents have told me that they like examining, from time-to-time, the map that the GPS leaves, especially on their kids phones.
We all need to learn more about the religions of the world. Even people who are not especially religious need to become respectfully informed. Now a Harvard online MOOC course on the world’s religions is enrolling and welcoming participants — for free. A lot more about the course by reading a Huffington Post article.
The course is offered as a series of modules, each focused on a specific religion. The course can be taken for free, but if students want a certificate of achievement they will need to pay $50. The instructors leading the classes teach at Harvard University and Wellesley College. Continue reading →