In the field of road transport, an interchange is a road junction that uses grade separation, and typically one or more ramps, to permit traffic on at least one highway to pass through the junction without interruption from other crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway (freeway or motorway) or a limited-access divided highway (expressway), though they are sometimes used at junctions between surface streets.
A half-trumpet interchange is essentially a trumpet interchange with either its loop ramp or the outer connecting ramp (but not both), and only one of its directional ramps, instead of two, designed to meet the continuous highway in one direction, usually on a 90-degree or semi-perpendicular angle. Should the need arise it can easily be upgraded into a full trumpet interchange, making it a three-way interchange. Two examples exist in Michigan: Between Main Street and M-14 in Ann Arbor, and between Edward N. Hines Drive and Ford Road (M-153).

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A stack interchange is a four-way interchange whereby a semi-directional left turn and a directional right turn are both available. Usually access to both turns is provided simultaneously by a single offramp. Assuming right-handed driving, in order to cross over incoming traffic and go left, vehicles first exit onto an off-ramp from the rightmost lane. After demerging from right-turning traffic, they complete their left turn by crossing both highways on a flyover ramp or underpass. The penultimate step is a merge with the right-turn on-ramp traffic from the opposite quadrant of the interchange. Finally an onramp merges both streams of incoming traffic into the left-bound highway. As there is only one offramp and one onramp (in that respective order), stacks do not suffer from the problem of weaving, and due to the semi-directional flyover ramps and directional ramps, they are generally safe and efficient at handling high traffic volumes in all directions.

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A cryptocurrency is a digital or virtual currency that uses cryptography for security. A cryptocurrency is difficult to counterfeit because of this security feature. Many cryptocurrencies are decentralized systems based on blockchain technology, a distributed ledger enforced by a disparate network of computers. A defining feature of a cryptocurrency, and arguably its biggest allure, is its organic nature; it is not issued by any central authority, rendering it theoretically immune to government interference or manipulation.

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Central to the appeal and function of Bitcoin is the blockchain technology it uses to store an online ledger of all the transactions that have ever been conducted using bitcoins, providing a data structure for this ledger that is exposed to a limited threat from hackers and can be copied across all computers running Bitcoin software. Every new block generated must be verified by the ledgers of each user on the market, making it almost impossible to forge transaction histories. Many experts see this blockchain as having important uses in technologies such as online voting and crowdfunding, and major financial institutions such as JPMorgan Chase see potential in cryptocurrencies to lower transaction costs by making payment processing more efficient. However, because cryptocurrencies are virtual and do not have a central repository, a digital cryptocurrency balance can be wiped out by a computer crash if a backup copy of the holdings does not exist, or if somebody simply loses their private keys. At the same time, there is no central authority, government, or corporation that has access to your funds or your personal information.

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The would-be hard fork with an expanded block size limit was described by hardware manufacturer Bitmain in June 2017 as a "contingency plan" should the bitcoin community decide to fork; the first implementation of the software was proposed under the name Bitcoin ABC at a conference that month. In July 2017, the Bitcoin Cash name was proposed by mining pool ViaBTC. The change, called a fork, took effect on 1 August 2017. As a result, the bitcoin ledger called the blockchain and the cryptocurrency split in two.[16] 

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EDA adjustments caused instabilities in mining difficulty of the Bitcoin Cash system, resulting in Bitcoin Cash being thousands of blocks ahead of Bitcoin. To address the problem with stability, a change of the Bitcoin Cash DAA was implemented and the EDA cancelled. The change took effect on 13 November 2017. After the change, the Bitcoin Cash DAA adjusts the mining difficulty after each block. To calculate the difficulty for a new block, the Bitcoin Cash DAA uses a moving window of last 144 blocks.[36]

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Cripto is an EGF-CFC or epidermal growth factor-CFC, which is encoded by the Cryptic family 1 gene.[5] Cryptic family protein 1B is a protein that in humans is encoded by the CFC1B gene.[6][7] Cryptic family protein 1B acts as a receptor for the TGF beta signaling pathway. It has been associated with the translation of an extracellular protein for this pathway.[5] The extracellular protein which Cripto encodes plays a crucial role in the development of left and right division of symmetry. Mutations of it could cause congenital heart disease.[8]

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A complete interchange has enough ramps to provide access from any direction of any road in the junction to any direction of any other road in the junction. A complete interchange between a freeway and another road (not a freeway) requires at least four ramps. Complete interchanges between two freeways generally have at least eight ramps, as having fewer would considerably reduce capacity and increase weaving. Using U-turns, the number for two freeways can be reduced to six, by making cars that want to turn left either pass by the other road first, then make a U-turn and turn right, or turn right first and then make a U-turn. Depending on the interchange type and the connectivity offered other numbers of ramps may be used. For example, if a highway interchanges with a highway containing a collector/express system, additional ramps can be used to strictly link the interchanging highway with the collector and express lanes respectively. For highways with high-occupancy vehicle (HOV) lanes, ramps can be used to service these carriageways directly, thereby increasing the number of ramps used.
Directional T interchanges use flyover/underpass ramps for both connecting and mainline segments, and they require a moderate amount of land and moderate costs since only two levels or roadway are typically used. They get their name due to their resemblance to the capital letter "T", depending upon the angle from which the interchange is seen and the alignment of the roads that are interchanging.

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The parclo is a safer modification of the cloverleaf design. Depending on the number of ramps used, they take up a moderate to large amount of land and are typically inexpensive to build. Parclos with more ramps have a greater capacity and efficiency than parclos with fewer ramps. Parclos are sometimes called a folded diamonds when only four ramps, in two quadrants, are used. If the loop ramps are constructed opposite or mirrored along the highway, weaving is avoided. Cloverleaf interchanges that involve a non-highway can be changed to parclos without too much reconstruction. Although the interchange's capacity is reduced, weaving is eliminated, increasing the safety and efficiency of the interchange.

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A cloverleaf interchange is typically a two-level, four-way interchange where all turns across opposing traffic are handled by non-directional loop ramps. Assuming right-handed traffic, to go left vehicles first cross over or under the target route, then bear right onto a sharply curved ramp that turns roughly 270 degrees, merging onto the target route from the right, and crossing the route just departed. These loop ramps produce the namesake cloverleaf shape.
Cryptocurrencies' blockchains are secure, but other aspects of a cryptocurrency ecosystem are not immune to the threat of hacking. In Bitcoin's 10-year history, several online exchanges have been the subject of hacking and theft, sometimes with millions of dollars worth of 'coins' stolen. Still, many observers look at cryptocurrencies as hope that a currency can exist that preserves value, facilitates exchange, is more transportable than hard metals, and is outside the influence of central banks and governments.

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A full Y-interchange (also known as a directional T interchange) is typically used when a three-way interchange is required for two or three highways interchanging in semi-parallel/perpendicular directions, but it can also be used in right-angle case as well. Their connecting ramps can spur from either the right or left side of the highway, depending on the direction of travel and the angle.

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In the Nodal signaling pathway of embryonic development, Cripto has been shown to have dual function as a co-receptor as well as ligand. Particularly in cell cultures, it has been shown to act as a signaling molecule with the capabilities of a growth factor, and in co-culture assays, it has displayed the property of a co-ligand to Nodal. Glycosylation is responsible for mediating this interface with Nodal. EGF-CFC proteins’ composition as a receptor complex is further solidified by the GPI linkage, making the cell membrane connection able to regulate growth factor signaling of Nodal.[5]
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A half-clover interchange is essentially half a cloverleaf interchange, constructed to connect in just three directions instead of four. These are rarely used due to the traffic weaving that they cause and the large amount of land that they consume, but they can be built in areas where the connecting ramp along the loop of a trumpet interchange is not feasible due to building developments or physical limitations. Half-clovers are designed to be readily upgraded to full cloverleaves if the terminating highway is ever extended past the through highway. Numerous half-clovers exist along I-90/I-94 in the Chicago, Illinois area.

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The parclo is a safer modification of the cloverleaf design. Depending on the number of ramps used, they take up a moderate to large amount of land and are typically inexpensive to build. Parclos with more ramps have a greater capacity and efficiency than parclos with fewer ramps. Parclos are sometimes called a folded diamonds when only four ramps, in two quadrants, are used. If the loop ramps are constructed opposite or mirrored along the highway, weaving is avoided. Cloverleaf interchanges that involve a non-highway can be changed to parclos without too much reconstruction. Although the interchange's capacity is reduced, weaving is eliminated, increasing the safety and efficiency of the interchange.

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A freeway junction or highway interchange (US) or motorway junction (UK) is a type of road junction linking one controlled-access highway (freeway or motorway) to another, to other roads, or to a rest area or motorway service area. In the UK, most (but not all) junctions are numbered sequentially. In the US, interchanges are either numbered by mileage (in most states) or by interchange number.

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Two major advantages of cloverleaves are that they require only one bridge (between the main perpendicular routes) which makes such junctions inexpensive as long as land is plentiful, and that they often do not require any traffic signals to operate. However, weaving is a major shortcoming of cloverleaves, as the four total offramps and onramps are present (the onramp from one leaf overlaps with the offramp for the next leaf), and merge on the main routes. Consequently, the capacity of this design is comparatively low. Cloverleaves also use a considerable area of land, and are more often found along older highways, in rural areas and within cities with low population densities. A variant design separates all turning traffic into a parallel carriageway to minimize the problem of weaving. Collector and distributor roads are similar, but are usually separated from the main carriageway by a divider, such as a guard rail or Jersey barrier. 

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A freeway junction or highway interchange (US) or motorway junction (UK) is a type of road junction linking one controlled-access highway (freeway or motorway) to another, to other roads, or to a rest area or motorway service area. In the UK, most (but not all) junctions are numbered sequentially. In the US, interchanges are either numbered by mileage (in most states) or by interchange number.
Bitcoin Cash trades on digital currency exchanges including Bitstamp,[30] Coinbase,[31] Gemini,[32] Kraken,[33] Bitfinex, and ShapeShift using the Bitcoin Cash name and the BCH ticker symbol for the cryptocurrency. On 26 March 2018, OKEx removed all Bitcoin Cash trading pairs except for BCH/BTC, BCH/ETH and BCH/USDT due to "inadequate liquidity".[5] As of May 2018, daily transaction numbers for Bitcoin Cash are about one-tenth of those of bitcoin.[5]

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