uncleflo
Registered since September 28th, 2017
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AgustaWestland Project Zero - Wikipedia
Saved by uncleflo on December 22nd, 2019.
The AgustaWestland Project Zero is a hybrid tiltrotor/Lift fan aircraft. It has been developed by AgustaWestland as a technology demonstrator, and is used to investigate all-electric propulsion and other advanced technologies. It is the world's first electric tiltrotor aircraft. In December 2010, AgustaWestland's management approved the formation of a team under James Wang with the intention of producing a technology demonstrator incorporating as many new innovations as possible on a single airframe. Speaking in 2013, Wang noted that electric technologies were rapidly advancing, and that the function of Project Zero was to achieve readiness with electric aircraft technologies: "Rather than waiting for the battery to become even better, then working on electric aircraft technology, the team has positioned itself to be ready for the next generation of batteries".
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Tax Loophole Found for UK Crypto Profits
Saved by uncleflo on February 10th, 2018.
Each country has its own systems for tax evaluation and collection, and some countries are stricter than others. One of the major issues governments have with cryptocurrencies is the difficulty in taxing profits made on trading. The United Kingdom’s HMRC (Her Majesty’s Revenue and Customs department) found this out the hard way. Finance experts have warned that a loophole which reduces crypto gains to zero can be exploited on tax returns in the UK. It was reported that this could potentially deprive the government of millions in lost revenue. HMRC will be expecting a large number of profit declarations on tax returns after the crypto market capacity soared by almost 2000% in the past year. However, the taxman could be seeing far less than anticipated due to a loophole which currently enables crypto profits to be declared as gambling winnings, which are not taxable.
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Zero Knowledge Range Proof
Saved by uncleflo on December 28th, 2017.
ING's zero knowledge range-proof precompiled contract for the go-ethereum client. One fundamental concern in blockchain technology is the confidentiality of the data on the blockchain. In order to reach consensus between all independent nodes in a blockchain network, each node must be able to validate all transactions (for instance against double-spent), in most cases this means that the content of the transactions is visible to all nodes. Fortunately several solutions exist that preserve confidentiality on a blockchain (private transactions, HyperLedger Fabric Channels, Payment Channels, Homomorphic encryption, transaction-mixing, zero knowledge proofs etc.). This article describes the implementation of a zero-knowledge range-proof in Ethereum. The zero knowledge range proof allows the blockchain network to validate that a secret number is within known limits without disclosing the secret number. This is useful to reach consensus in a variety of use cases: Validate that someone's age is between 18 and 65 without disclosing the age; Validate that someone is in Europe without disclosing the exact location; Validate that a payment-amount is positive without disclosing the amount (as done by Monero). The zero-knowledge range-proof requires a commitment on a number by a trusted party (for instance a government committing on someone's age), an Ethereum-user can use this commitment to generate a range-proof. The Ethereum network will verify this proof.
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Zero emission luxury supercar concepts | Car And Engines
Saved by uncleflo on July 19th, 2014.
Supercars are usually associated with screaming engines that drink gas like there is no tomorrow. However, there is no dearth of customers who love to possess these beasts, as they are good at turning some heads on the streets. The recent demand to curb emissions and run vehicles on alternative fuels has made some automakers and designers think about next-generation supercars, which are silent, clean and run without gas. Here is a list 15 such concept vehicles that can change the face of supercars forever:
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dd - writing zeros - general question
Saved by uncleflo on August 23rd, 2013.
Can't figure out why using dd to write zeros to a hard drive is so slow. Yesterday, I prepped a hard drive for a friend and did the standard command: dd if=/dev/zero of=/dev/sda The machine I used has a Core 2 Duo 2.4 Ghz cpu, 2 Gigs of DDR2 800 RAM, a new Intel mobo, and a Western Digital 250 gig. SATA drive with 16 meg. cache. The result was 30,482 seconds (approx. 8.5 hrs.) to write zeros to the entire 500 Gig. drive, at an average rate of 16.4 MB/sec.
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