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The Almighty Buck

Stock Market Valuation Exceeds Its Components' Actual Value 335

An anonymous reader writes: James Tobin, a Nobel Prize-winning economist, developed a concept called "Q-value" — it's the ratio between two numbers: 1) the sum of all publicly-traded companies' stock valuations and 2) the value of all these companies' actual assets, if they were sold. Bloomberg reports that the continued strength of the stock market has now caused that ratio to go over 1 — in other words, the market values companies about 10% higher than the sum of their actual assets. The Q value is now at its highest point since the Dot-com bubble. Similar peaks in the past hundred years have all been quickly followed by crashes.

Now, that's not to say a crash is imminent — experts disagree on the Q-value's reliability. One said, "the ratio's doubling since 2009 to 1.10 is a symptom of companies diverting money from their businesses to the stock market, choosing buybacks over capital spending. Six years of zero-percent interest rates have similarly driven investors into riskier things like equities, elevating the paper value of assets over their tangible worth." Others point out that as the digital economy grows, a greater portion of publicly traded companies lack the tangible assets that were the hallmark of the manufacturing boom.

Comment Re:Not sure if smart or retarded (Score 2) 204

Actually, it is the other way round: There are a lot of customers Blizzard wants to keep doing business and hence has decided to get rid off about 1.5% bad apples that really piss off the other ones by breaking the rules of the game. Quite akin to banning people that post offensive content.

The only thing that may be surprising is the size of the wave. But that also makes sense because cheater-tech is usually bought by the cheaters (most cannot code themselves one bit) and if they were to bann often, cheater-tech makers could easily determine what Blizzard does to identify cheaters.

Education

Schools That Ban Mobile Phones See Better Academic Results 113

HughPickens.com writes: Jamie Doward reports at The Guardian that according to a recent study in the UK, the effect of banning mobile phones from school premises adds up to the equivalent of an extra week's schooling over a pupil's academic year with the test scores of students aged 16 improved by 6.4% after schools banned mobile phones, "We found that not only did student achievement improve, but also that low-achieving and low-income students gained the most. We found the impact of banning phones for these students was equivalent to an additional hour a week in school, or to increasing the school year by five days." In the UK, more than 90% of teenagers own a mobile phone; in the US, just under three quarters have one. In a survey conducted in 2001, no school banned mobiles. By 2007, this had risen to 50%, and by 2012 some 98% of schools either did not allow phones on school premises or required them to be handed in at the beginning of the day. But some schools are starting to allow limited use of the devices. New York mayor Bill de Blasio has lifted a 10-year ban on phones on school premises, with the city's chancellor of schools stating that it would reduce inequality.

The research was carried out at Birmingham, London, Leicester and Manchester schools before and after bans were introduced (PDF). It factored in characteristics such as gender, eligibility for free school meals, special educational needs status and prior educational attainment. "Technological advancements are commonly viewed as increasing productivity," write Louis-Philippe Beland and Richard Murphy. "Modern technology is used in the classroom to engage students and improve performance. There are, however, potential drawbacks as well, as they could lead to distractions."
Advertising

Editor-in-Chief of the Next Web: Adblockers Are Immoral 618

lemur3 writes: Hot on the heels of the recent implementation of Canvas Ads (allowing advertisers to use the full page) Martin Bryant, the Editor-in-Chief of The Next Web, wrote a piece that, ostensibly, calls out mobile carriers in Europe for offering ad blocking as a service. He writes: "Display ads are still an important bread-and-butter income stream. Taking delight in denying publishers that revenue shows either sociopathic tendencies or ignorance of economic realities." While referring to those using ad blocking as sociopathic is likely not to win many fans, this mindset seems to be prevalent in certain circles, as discussed previously on Slashdot. Martin closes his piece with a warning: "For all their sins, ads fuel much of the Web. Cut them out and you're strangling the diversity of online voices and publishers – and I don't think consumers really want that."

Comment Re:If the need immunity, then they are criminals.. (Score 1) 118

They are getting immunity. That protects them against being prosecuted for _crimes_ they have committed. What prison guards do is not a crime as long as they follow their job description. For the police to execute a legally obtained search warrant is not a crime. Doing surgery with proper authorization from the patient or under emergency condition and with the proper authorization to do surgery of the type done is not a crime. None of these things require immunity, just exceptions in the law. Immunity means you can break the law without consequences (often retroactively), not that there is an exception for what you do in the law.

Really, have you even looked up what "rule of law" means? Because you certainly do not understand its meaning.

Space

Ask Slashdot: Best Payloads For Asteroid Diverter/Killer Mission? 150

TheRealHocusLocus writes: The Emergency Asteroid Defence Project has launched a crowdfunded IndieGoGo campaign to help produce a set of working blueprints for a two-stage HAIV, or Hypervelocity Asteroid Intercept Vehicle. This HAIV paper (PDF) describes the use of a leading kinetic impactor to make a crater — a following nuclear warhead would detonate in the crater for maximum energy transfer. The plans would be available for philanthropists to bring to prototype stage, while your friendly local nuclear weapon state supplies the warhead. This may be a best-fit solution. But just ask Morgan Freeman: these strategies could fail. What — if any — backup strategy could be integrated into an HAIV mission as a fail-safe in case the primary fails? Here is a review of strategies (some fanciful, few deployable) if we have to divert an asteroid with very short lead time. A gentle landing on the object may not be feasible, and we must rely on things that push hard or go boom. For example: detonating nearby to ablate surface materials and create recoil in the direction we wish to nudge. Also, with multiple warheads and precise timing, would it be possible to create a "shaped" nuclear explosion in space?
Transportation

FBI Alleges Security Researcher Tampered With a Plane's Flight Control Systems 190

Salo2112 writes with a followup to a story from April in which a security researcher was pulled off a plane by FBI agents seemingly over a tweet referencing a security weakness in one of the plane's systems. At the time, the FBI insisted he had actually tampered with core systems on an earlier flight, and now we have details. The FBI's search warrant application (PDF) alleges that the researcher, Chris Roberts, not only hacked the in-flight entertainment system, but also accessed the Thrust Management Computer and issued a climb command. "He stated that he thereby caused one of the airplane engines to climb resulting in a lateral or sideways movement of the plane during one of these flights. He also stated that he used Vortex software after comprising/exploiting or ‘hacking’ the airplane’s networks. He used the software to monitor traffic from the cockpit system." Roberts says the FBI has presented his statements out of their proper context.

Comment Re:Analogue computer (Score 1) 86

I am aware of all this, and you are right. Even getting real 16 bit is tricky and forget about doing it really fast.

As to mistaking sample frequency and output data rate, while I did not read the data-sheets, if you look at the first page of the one for the ADS1675, you find "4Msps", which should be 4 million measurements per second. You will also see that it has actually up to 32Mbps I/O data rate for its digital interface. If I read this right, they already do 8x oversampling (hence you can _read_ in fact only 500k measurements/second) and are at roughly 16 bit resolution due to noise. And no, I do not know how they manage to get this number of measurements from the signal the sigma-delta modulator gives them at these "low" clock rates, but some advanced trickery is clearly involved.

Now, I might have misunderstood something here completely, if so, please enlighten me.

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