Wednesday, November 30, 2016
Tuesday, November 29, 2016
Monday, November 28, 2016
Extensive ‘Security and Privacy Guide’ for macOS Systems
November 28, 2016 AT 9:11 am
Extensive ‘Security and Privacy Guide’ for macOS Systems
drduh over at GitHub has written a few guides, and the latest contribution has the largest user base: for macOS users, this nearly-12k word guide is incredibly rich with suggestions for personal and professional security using Apple’s desktop OS. From Tor and SSH to disk encryption and even firmware flashing, the guide has one underpinning declaration: “A system is only as secure as its administrator is capable of making it.” You don’t need to follow each of these steps, if any, but the more you know the more you know 😉 Also, the ‘additional resources‘ at the end of the guide are a great roundup-read of security-related articles and other-guides.
This is a collection of thoughts on securing a modern Apple Mac computer using macOS (formerly “OS X”) 10.12 “Sierra”, as well as steps to improving online privacy.
This guide is targeted to “power users” who wish to adopt enterprise-standard security, but is also suitable for novice users with an interest in improving their privacy and security on a Mac.
There is no security silver bullet. A system is only as secure as its administrator is capable of making it.
I am not responsible if you break a Mac by following any of these steps.
If you wish to make a correction or improvement, please send a pull request or open an issue.
Maker Business — SparkFun CEO Glenn Samala interview by @PearceMelcher @sparkfun #makerbusiness @CHIPADDICT
Wearables — What’s your tolerance?
Electronics — Protect your multimeter!
Biohacking — Book: Dear Data
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Entirely new theoretical method for factoring numbers using quantum simulation could lead to a theory of numbers that is based on physical quantum systems
Researchers introduced new concepts and arithmetic functions that could play a significant role in the quantum factorization problem. The Factorization Ensemble is the main one; it allows us to bind the hamiltonian of a quantum factoring simulator.
Although the researchers have not yet built a quantum simulator, they show that the prime factors of large numbers would correspond to the energy valuesof the simulator. Measuring the energy values would then give the solutions to a given factoring problem, suggesting that factoring large numbers into primes may not be as difficult as currently thought.
"The work opens a new avenue to factor numbers, but we do not yet know about its power," Rosales told Phys.org. "It is very striking to find a completely new way to factor that comes directly from quantum physics. It does not demonstrate that factoring numbers is easy, but finding new ways to factor certainly does not add to the strength of algorithms based on its assumed complexity."
For now, the researchers do not know the technical complexity of building such a device, or whether it would even be possible to factor very large numbers.
"We have shown that a quantum simulator able to factor numbers exists and, in principle, it could be built," Martin said. "Whether the simulator is feasible with current technology in a way that it can factor numbers of the same size as the ones used in cryptography remains to be seen, but the avenue is now open. The prospect of building such a device before a quantum computer is built is something to be pondered seriously."
Besides the potential for practical applications, the results are also interesting on a more fundamental level.
"In our opinion, the contributions of the paper have two sides: in pure mathematics and in applied cryptography," Rosales said.
One of the most mathematically interesting aspects of the new work is that it involves redefining the factorization problem by introducing a new arithmetic function that could then be mapped onto the physics of the quantum simulator and correspond to the energy values. In a sense, the researchers are rewriting the math problem in terms of physics.
"The manuscript tries to bridge number theory with quantum physics," Rosales said, noting that researchers have been trying to do this for several decades. "Nowadays with the development of quantum information and computation and the discovery of Shor's algorithm, the connection seems more intriguing and important than ever."
In the long-term, this type of investigation could ultimately lead to a quantum number theory—a theory of numbers that is based on physical quantum systems.
Feynman's prescription for a quantum simulator was to find a hamiltonian for a system that could serve as a computer. P\'olya and Hilbert conjecture was to demonstrate Riemann's hypothesis through the spectral decomposition of hermitian operators. Here we study the problem of decomposing a number into its prime factors, N=xy, using such a simulator. First, we derive the hamiltonian of the physical system that simulate a new arithmetic function, formulated for the factorization problem, that represents the energy of the computer. This function rests alone on the primes below N−−√. We exactly solve the spectrum of the quantum system without resorting to any external ad-hoc conditions, also showing that it obtains, for x≪N−−√, a prediction of the prime counting function that is almost identical to Riemann's R(x) function. It has no counterpart in analytic number theory and its derivation is a consequence of the quantum theory of the simulator alone.
Arxiv - Quantum Simulation of the Factorization ProblemTo develop a quantum number theory, what we need is a quantum system (at least a theoretical one) to able to reproduce the prime numbers," Martin said. "In the paper, our take was to try to obtain a system able to factorize a number into its primes. The method is 'analogue' in the sense that it is not like Shor's algorithm, which is programmable in a quantum computer following the gate model. Instead, it is the measurement of a carefully set quantum system that provides the answer.
"To carry out this program, we need to first devise an arithmetic formulation of the factorization problem that is amenable to be quantized. We have to find an arithmetic function, eventually related to a Hamiltonian, and set up the quantum-mechanical problem such that its solution corresponds to the solution of the factorization problem. In the work we succeeded in carrying out these ideas. We found the correct arithmetic function, defined the factorization set to bind the Hamiltonian and obtained the solution of the quantum-mechanical problem. To the best of our knowledge, this has not been achieved before, although ours was not the first attempt.
"As it is always done in physics, to validate the results, we have to prove its predictive capabilities, so we did predictions with them: obtained a factorization algorithm that is completely new, with no similitude to any other factorization algorithm that we know of, and thoroughly checked the statistics of the solution against the prime number theorem.
"The results left us really astounded. To demonstrate this, in the paper we show how the spectrum reproduces the prime counting function and is almost identical to the Riemann's. This is obtained as a direct consequence of the quantum mechanical theory and has no counterpart in number theory. Carrying this to the extreme, this could be even considered the physics underlying the Riemann hypothesis [one of the most important open problems in number theory] in the sense that the Hamiltonian is naturally bounded, without any further assumptions."
The researchers explain that, in this paper, they just hinted that the results have deeper mathematical implications, and they plan to further investigate these possibilities in the future. They are also looking into what it would take to build a quantum simulator.
Read more at: http://ift.tt/2fJhxvB
Reposted via Next Big Future
Hackers are Designing the Next Social Network – for hackers – and It’s Looking Good
November 28, 2016 AT 1:38 pm
Hackers are Designing the Next Social Network – for hackers – and It’s Looking Good
This is an interesting initiative by Ray Alez, taking some of the best features of existing social networks and attempting to mash and streamline them into one – that is open-source and documented here on GitHub, has a pretty strong feature list and future-feature list, and most of all professes decentralization “without any nonsense” (I can’t get enough of that phrase these days):
My goal is to take the best ideas and experience from all the social networks that have been developed up to this point, and create the ultimate social media platform, that will work the way social networks were supposed to work, if they were designed now — it will be open source, decentralized, elegant, simple, with high quality community and without any nonsense.
Maker Business — SparkFun CEO Glenn Samala interview by @PearceMelcher @sparkfun #makerbusiness @CHIPADDICT
Wearables — What’s your tolerance?
Electronics — Protect your multimeter!
Biohacking — Book: Dear Data
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Reposted via adafruit industries blog
Sunday, November 27, 2016
NEW GUIDE: Illuminate Your Spirit Power with a ‘Rainbow Chakra LED Hoodie’
November 25, 2016 AT 2:41 pm
NEW GUIDE: Illuminate Your Spirit Power with a ‘Rainbow Chakra LED Hoodie’
Erin St Blaine’s newest guide in the Adafruit Learning System includes several hundred lines of provided code, along with tips & tricks for turning any hoodie into a fantastic glowing chakra LED hoodie – complete with 7 chakra 3D-printed buttons which when pressed change the display color of attached NeoPixels!
Festivals and events can get chilly at night. What better way to warm up than with a glowing hoodie — especially one with interactive buttons that engage everyone you meet and offer conversations and connection, ooh’s and aah’s, and plenty of light to find your way home.
This glowing hoodie is controlled by seven 3D printed buttons along the front, each corresonding to one of the seven chakras. When a colored button is pressed, the Neopixel strip lining the hood and the individual neopixels on the tail animate in that chakra’s color.
Watch it in action:
And click here to make your own.
Maker Business — SparkFun CEO Glenn Samala interview by @PearceMelcher @sparkfun #makerbusiness @CHIPADDICT
Wearables — Go retro with pixels
Electronics — Multimeter Peaks
Biohacking — Bone Conduction for Everyone
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Reposted via adafruit industries blog
eccellenze-italiane: Villa d’Este, Lago di Como
Saturday, November 26, 2016
Philosophy di Lorenz
Philosophy di Lorenzo Serafini Hand Crochet Bralette (450 BRL) ❤ liked on Polyvore featuring tops and black
Reposted via Sara Raines
Thursday, November 24, 2016
Starfury by Ron Thornton
Steve Burg wrote this on his Facebook timeline yesterday.
This is Ron's original 3D model of the Starfury fighter from "Babylon 5" - which miraculously I managed to find on my hard drive... one of my many collaborations with my longtime friend who has now left us... — with Ron Thornton at somewhere in space...
Keywords: starfury fighter fictional vessel used by Earthforce military branch of the Earth Alliance science fiction television series Babylon 5 3d concept spaceship model by the late ron thornton hd high definition space scene
Reposted via concept ships
osphilia: model – Anna Lena Sophie.photo by Madamilein I...
model – Anna Lena Sophie.
photo by Madamilein I Photography. Silvana Madamski
Reposted via F&O Forgotten Nobility
Baked Garlic Brown S
Baked Garlic Brown Sugar Chicken by http://food.com: incredibly easy recipe! #Chciken #Brown_Sugar #food_com
Reposted via Jessica Shires
Wednesday, November 23, 2016
Tuesday, November 22, 2016
gyclli: For you :) Everyone’s Favourite - A Kebab Stall,...
For you :)
Everyone’s Favourite - A Kebab Stall, Istanbul
Reposted via F&O Forgotten Nobility
Monday, November 21, 2016
mimigemrose: lovelylovelyartist: maneth985: awwwwww♥ This is...
@marissareiawwwwww♥
This is the cutest shit ever everything else can go home
Reposted via Ixnay-on-the-Oddk
effys-photos: Deforestation Renewed V - (Ⓒeffys-photos)Full Set...
Deforestation Renewed V - (Ⓒeffys-photos)
Full Set | Buy Prints | Website
Reposted via Ixnay-on-the-Oddk
Sunday, November 20, 2016
eccellenze-italiane: Mantova, Palazzo del Te by Sonda
Saturday, November 19, 2016
Final version of NASA EMdrive paper confirms 1.2 millinewtons per kw of thrust which is 300 times better than other zero propellent propulsion
NASA Emdrive tests consistently measured performance at 1.2 ± 0.1 mN∕kW, which was very close to the average impulsive performance measured in air. A number of error sources were considered and discussed.
Emdrive is 300 times better than light sails, laser propulsion and photon rockets on thrust to power level basisMissions with very large delta-v requirements, having a propellant consumption rate of zero could offset the higher power requirements. The 1.2 mN∕kW performance parameter is over two orders of magnitude higher than other forms of ‘zero propellant’ propulsion, such as light sails, laser propulsion, and photon rockets having thrust-to-power levels in the 3.33–6.67 μN∕kW (or 0.0033–0.0067 mN∕kW) range.
A physics model used to derive a force was a nonlocal hidden-variable theory aka pilot-wave theory.
An experiment claims to have invalidated a decades-old criticism against pilot-wave theory, an alternative formulation of quantum mechanics that avoids the most baffling features of the subatomic universe.The differences between Bohm and Copenhagen become clear when we look at the classic “double slit” experiment, in which particles (let’s say electrons) pass through a pair of narrow slits, eventually reaching a screen where each particle can be recorded. When the experiment is carried out, the electrons behave like waves, creating on the screen a particular pattern called an “interference pattern.” Remarkably, this pattern gradually emerges even if the electrons are sent one at a time, suggesting that each electron passes through both slits simultaneously.
Those who embrace the Copenhagen view have come to live with this state of affairs — after all, it’s meaningless to speak of a particle’s position until we measure it. Some physicists are drawn instead to the Many Worlds interpretation of quantum mechanics, in which observers in some universes see the electron go through the left slit, while those in other universes see it go through the right slit — which is fine, if you’re comfortable with an infinite array of unseen universes.
By comparison, the Bohmian view sounds rather tame: The electrons act like actual particles, their velocities at any moment fully determined by the pilot wave, which in turn depends on the wave function. In this view, each electron is like a surfer: It occupies a particular place at every specific moment in time, yet its motion is dictated by the motion of a spread-out wave. Although each electron takes a fully determined path through just one slit, the pilot wave passes through both slits. The end result exactly matches the pattern one sees in standard quantum mechanics.
For some theorists, the Bohmian interpretation holds an irresistible appeal. “All you have to do to make sense of quantum mechanics is to say to yourself: When we talk about particles, we really mean particles. Then all the problems go away,” said Goldstein. “Things have positions. They are somewhere. If you take that idea seriously, you’re led almost immediately to Bohm. It’s a far simpler version of quantum mechanics than what you find in the textbooks.”
The farther the first photon travels, the less reliable the second photon’s report becomes. The reason is nonlocality. Because the two photons are entangled, the path that the first photon takes will affect the polarization of the second photon. By the time the first photon reaches the screen, the second photon’s polarization is equally likely to be oriented one way as the other — thus giving it “no opinion,” so to speak, as to whether the first photon took the first route or the second (the equivalent of knowing which of the two slits it went through).
The problem isn’t that Bohm trajectories are surreal, said Steinberg. The problem is that the second photon says that Bohm trajectories are surreal — and, thanks to nonlocality, its report is not to be trusted. “There’s no real contradiction in there,” said Steinberg. “You just have to always bear in mind the nonlocality, or you miss something very important.”
Science Advances - Experimental nonlocal and surreal Bohmian trajectoriesWeak measurement allows one to empirically determine a set of average trajectories for an ensemble of quantum particles. However, when two particles are entangled, the trajectories of the first particle can depend nonlocally on the position of the second particle. Moreover, the theory describing these trajectories, called Bohmian mechanics, predicts trajectories that were at first deemed “surreal” when the second particle is used to probe the position of the first particle. We entangle two photons and determine a set of Bohmian trajectories for one of them using weak measurements and postselection. We show that the trajectories seem surreal only if one ignores their manifest nonlocality.
SOURCES- Wired, Science Advances, Journal of Propulsion and Power
Reposted via Next Big Future
Elon Musk claims solar roof looks better than a normal roof, lasts twice as long, costs less and generates electricity
than a traditional roof—even before savings from the power bill. “Electricity,” Musk said, “is just a bonus.”
If Musk’s claims prove true, this could be a real turning point in the evolution of solar power. The rooftop shingles he unveiled just a few weeks ago are something to behold: They’re made of textured glass and are virtually indistinguishable from high-end roofing products. They also transform light into power for your home and your electric car.
“So the basic proposition will be: Would you like a roof that looks better than a normal roof, lasts twice as long, costs less and—by the way—generates electricity?” Musk said. “Why would you get anything else?”
The terra cotta and slate roofs Tesla mimicked are among the most expensive roofing materials on the market—costing as much as 20 times more than cheap asphalt shingles.
Much of the cost savings Musk is anticipating comes from shipping the materials. Traditional roofing materials are brittle, heavy, and bulky. Shipping costs are high, as is the quantity lost to breakage. The new tempered-glass roof tiles, engineered in Tesla’s new automotive and solar glass division, weigh as little as a fifth of current products and are considerably easier to ship, Musk said.
SOURCES - bloomberg business
Reposted via Next Big Future
Can Lost Neurons Be Replaced?
The human brain is a biological wonder with considerable skills. Regeneration, unfortunately, isn’t one of them. Save for one tiny V shaped region within the hippocampus, the human brain’s ability to rebuild itself is limited. When neurons die, there’s no backup reserve of cells to replace them. Brain trauma such as a blow to the […]
Reposted via Life Code Rx
Friday, November 18, 2016
Thursday, November 17, 2016
Spacex filed with FCC to operate 4400 satellites and Elon Musk Spacex shares are worth $8.1 billion
Elon Musk's trust currently owns 54% of the outstanding stock of SpaceX and has voting control of 78% of the outstanding stock of SpaceX.
Google and Fidelity’s investment valued Spacex at roughly $15 billion. Therefore, Elon's shares of SpaceX are worth $8.1 billion.
Elon has 22% stake in Tesla Motors (31,100,644 shares) which are currently worth $5.7 billion at today’s close of $183.93.
A net worth of $13.8 billion would put Elon as about the 70th richest person in the world The FCC filing is hereSpace Exploration Holdings, LLC seeks operating authority (i.e., approval for orbital deployment and a station license) for a non-geostationary orbit satellite system in the Fixed-Satellite Service using the Ku and Ka frequency bands.
Elon Musk has proposed a network of some 4,000 micro-satellites to provide broadband Internet servicesaround the globe. SpaceX is partnering with Google and Fidelity Investments, which are investing $1 billion for a 10 percent stake in the endeavor. Richard Branson’s Virgin Galactic and Qualcomm, meanwhile, are investing in a competing venture called OneWeb, which aims to build a similar network of micro-satellites.
Satellite technology has advanced, bringing the cost of deployment down significantly. Toaster-sized micro-satellites can be launched dozens at a time, and don’t have to operate at very high orbits, reducing launch costs, but they can deliver performance comparable to larger, older satellites at higher altitudes.
The speed of light is 40 per cent faster in the vacuum of space than it is for fiber. Elon plans to use optical lasers to communicate between the micro-satellites.
Elon will have 60 people working on the space Internet project initially and that could rise to 1,000 in a few years.
“You’ve got large swaths of land where there is a relatively low density of users,” Musk told an audience at the opening of SpaceX’s new satellite development center in Seattle last week. “Space is actually ideal for that.”
Musk and Branson are not alone in recognizing the market potential. Besides investing in Musk’s project, Google is working on a high-altitude balloon-based Internet delivery system called Loon. And Facebook is developing high-altitude, high-endurance drones to deliver Internet capability to remote areas. The Google and Facebook projects would be similar in concept to the space-based systems, while operating within the Earth’s atmosphere.
OneWeb is a supercharged version of O3b. Instead of dozens of satellites, Wyler plans to putup hundreds—648, to start with.
The satellites will be in a low-earth orbit 750 miles up, much closer than even O3b’s machines. Engineers expect data to travel between space and the surface in 20 milliseconds, which would provide a state-of-the-art Internet service capable of handling any application.
Musk’s plan is to build thousands of satellites at a SpaceX factory, launch them with his own rockets, and use them to handle much of the world’s Internet traffic. “We want a satellite that is an order of magnitude more sophisticated than what Greg [Wyler of OneWeb] wants,” he says. “I think there should be two competing systems.”
According to Musk, SpaceX will focus on making satellites for itself for the time being, rather than competing with its customers,although that may change over time. “I think we would consider building satellites for ourselves and for other people,” he says. “We’ll start by building ones that address the specific application that we are working on, and then we will be more than happy to sell to other people.”
Musk said it will take many, many years to have his Internet service up and running. “People should not expect this to be active sooner than five years,” he said. And it’ll be expensive: Around $10 billion to build, he says. “But we see it as a long-term revenue source for SpaceX to be able to fund a city on Mars.”
Elon says "It will be important for Mars to have a global communications network as well. I think this needs to be done and I don’t see anyone else doing it.Reposted via Next Big Future
Trying to take off ur binder like
Trying to take off ur binder like
Reposted via Alright, then, I'll go to hell.