Lifeboat Foundation

The bugs that time forgot

Science & technology Aug 1st 2020 edition.

Let’s talk about electric dirt bikes. I bled and got bruised to test these interesting battery-powered motorcycles. I added my opinion as a dirt bike rider, but also I surveyed my colleagues, and we did additional research to get unbiased results.

An electric dirt bike is a motorcycle designed for use on rough terrain and runs by a battery-powered motor. Compared to a traditional dirt bike, an electric dirt bike is an Eco-friendly machine that requires less maintenance and almost has no sound.

On the heels of IBM’s quantum news last week come two more quantum items. D-Wave Systems today announced the name of its forthcoming 5000-qubit system, Advantage (yes the name choice isn’t serendipity), at its user conference being held this week in Newport, RI. Last week a Google draft paper, discovered by the Financial Times, claimed attaining Quantum Supremacy using a 53-qubit superconducting processor. The paper found on NASA’s website was later withdrawn. Conversation around it has been bubbling in the QC community since.

More on D-Wave’s announcements later – the Advantage system isn’t expected to be broadly available until mid-2020 which is roughly in keeping with its stated plans. The Google work on quantum supremacy is fascinating. Google has declined to comment on the paper. How FT became aware of the paper isn’t clear. A few observers suggest it looks like an early draft.

Quantum supremacy, of course, is the notion of a quantum computer doing something that classical computers simply can’t reasonably do. In this instance, the reported Google paper claimed it was able to perform as task (a particular random number generation) on its QC in 200 seconds versus what would take on the order 10,000 years on a supercomputer. In an archived copy of the draft that HPCwire was able to find, the authors say they “estimated the classical computational cost” of running supremacy circuits on Summit and on a large Google cluster. (For an excellent discussion of quantum supremacy see Scott Aaronson’s (University of Texas) blog yesterday, Scott’s Supreme Quantum Supremacy FAQ)

Most linear accelerators are energy hogs, but a new model recovers waste energy that can be ploughed back into the system.

On Jan. 4, 2010, Dubai opened the world’s tallest tower, the Burj Khalifa, standing at an impressive 828 meters tall. It had been six years in the making, with the excavation works taking place in January 2004 and the external cladding of the structure completed five years later in September 2009.

Its opening ceremony was televised around the globe at a time when the world was only just beginning to show signs of recovery after the worst recession in our lifetime, making a defiant stand for prosperity. Since the Burj Khalifa was opened, there has been talk of other, even taller towers, but currently that is all it has been — talk.

DUBAI: The day the Burj Khalifa was opened, it stood as a sign of prosperity at a time when the world was on its knees, crippled by the worst recession of our lifetime. Dubai had already rung in the new year, waving a relieved farewell to a turbulent 2009, with this vast 828-meter-tall tower acting as the center of the world’s highest firework display — its roots held solid in the foundations of Dubai Mall, one of the world’s biggest.

A centuries-old question surrounding Stonehenge has been solved, linking the tall megaliths to a geographic area where they may have come from.

The original source of the massive sarsen stones has long been debated, at least four centuries according to the study. The smaller “bluestones” near the center of the circular monument have been traced to an area in Wales, about 200 km away, in an earlier study.

Geologists used geochemical data from the sarsens and compared it to the geochemical signature of different regions.

Tesla has released its quarterly “Tesla Vehicle Safety Report.” One of the top reasons — if not the #1 reason — I bought a Tesla Model 3 last was because of its record-setting safety rating, so I’m always interested in seeing new stats on this topic.

The second quarter of 2020 saw a slightly worse result for Tesla than the first quarter in terms of accidents per million miles driven with Tesla Autopilot engaged (see graph below), but keep in mind that the first quarter had a record result. Additionally, the difference was so small that it was probably not statistically significant. On the other hand, Tesla’s Q2 figure was far better than the US average — about 10 times better with Autopilot engaged.

This one’s made from construction waste, solving the blocks’ biggest problem.

WASHINGTON — The Army National Guard will move most of its brigades under the command of its eight division headquarters as it reorganizes its fighting formations to give the force more combat power and some soldiers new career opportunities, officials said.

The Guard move will mark a substantial increase in the number of fully manned divisions that the Army can deploy, as only the service’s 10 active-duty divisions are now filled out with subordinate units, said Lt. Gen. Daniel Hokanson, the director of the Army National Guard. The increase to 18 complete Army divisions comes at a time when service officials believe a major conflict with a near-peer rival — namely Russia or China — would require the employment of full divisions, he said.

For the last two decades, the Army has focused on its smaller brigade combat teams as its primary fighting elements for counterterrorism operations and deployments focused on assisting the forces of other nations.