Submission + - Strange Stars Pulse to the Golden Mean (quantamagazine.org)
Learned, a neutrino physicist at the University of Hawaii, Mnoa, has a pet theory that super-advanced alien civilizations might send messages by tickling stars with neutrino beams, eliciting Morse code-like pulses. “It’s the sort of thing tenured senior professors can get away with,” he said. The pulsations of KIC 5520878, recorded recently by NASA’s Kepler telescope, suggested that the star might be so employed.
A “variable” star, KIC 5520878 brightens and dims in a six-hour cycle, seesawing between cool-and-clear and hot-and-opaque. Overlaying this rhythm is a second, subtler variation of unknown origin; this frequency interplays with the first to make some of the star’s pulses brighter than others. In the fluctuations, Learned had identified interesting and, he thought, possibly intelligent sequences, such as prime numbers (which have been floated as a conceivable basis of extraterrestrial communication). He then found hints that the star’s pulses were chaotic.
But when Learned mentioned his investigations to a colleague, William Ditto, last summer, Ditto was struck by the ratio of the two frequencies driving the star’s pulsations.
“I said, ‘Wait a minute, that’s the golden mean.’”
Comment Re:As an audio-visuophile, It's not about resoluti (Score 1) 332
"Hi-fi"larious!
Submission + - Cutting the Cord? Time Warner loses 184,000 TV subscribers in one quarter. (wsj.com)
The addition of 92,000 residential high-speed data customers was offset by 184,000 fewer residential video customers in the quarter. Triple play customers fell by 24,000, while residential voice additions were 14,000.
Comment Re:Real Article Here (Score 1) 571
A flux capacitor? Of course, discharging one has some temporal side effects.
Submission + - Technology Heats Up the Adultery Arms Race
But virtual surveillance has its risks. Stumbling across an incriminating email your partner left open is one thing; premeditated spying can land you in court. A Minnesota man named Danny Lee Hormann, suspecting his wife of infidelity, installed a GPS tracker on her car and allegedly downloaded spyware onto her phone and the family computer. In March 2010, Hormann's wife had a mechanic search her car and found the tracker. She called the police, and Hormann spent a month in jail on stalking charges. “I always tell people two things: (1) do it legally, and (2) do it right,” says John Paul Lucich, a computer-forensics expert and the author of Cyber Lies, a do-it-yourself guide for spouses looking to become virtual sleuths. Lucich has worked his share of ugly divorces, and he stresses that even the most damning digital evidence of infidelity will prove worthless in court—and potentially land you in trouble—if improperly gathered. His blanket advice: Get a really good lawyer.
Comment Re:Deniers are too stupid to read -- prove me wron (Score 1) 661
Exactly. Even as sophisticated as they are, computer models can only be as good as our understanding of the phenomenon being modeled. It's the climate models that are showing catastrophic positive feedbacks for temperature with an increase in "greenhouse gases". But those catastrophic positive feedback scenarios present in the computer model may or may not exist in the real world, because of interactions that are not accounted for in the model because they're presently not known or not well characterized.
The comparison to modeling the macroeconomy is well taken. Both are complex nonlinear systems in which the validity of computer models are highly dependent upon detailed knowledge of the initial conditions, and in which the information content of the phenomenon being modeled cannot reasonably be captured except in a highly simplified fashion. The same information problem that plagues macroeconomic models (you can't really gather all the information necessary to know the initial state, because there's far too much information required, and even if you could gather it, by the time you've gathered the information, the system's state has changed) to some degree applies to modeling climate, particularly where there are direct interactions between human actions and the system.
Paleoclimate data appears to show we're on the downward side of the peak of the current interglacial, with the amplitude of short term warm periods actually decreasing over the last few thousand years. And the current computer models didn't predict the "pause" in increased global mean surface temperature observed since about the turn of the millennium. The models simply aren't good enough to restructure the basis of the entire global energy economy on.
Comment Amazon Prime, Netflix, iTunes (Score 1) 340
On-demand streaming is the future of TV. The cable and satellite companies are going the way of bookstores and newspapers.