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ülkeninparasıThe recovery was led in collaboration between Solana engineers abuy bitcoin with your credit cardnd more than 1,000 validators, with a hard fork being passed after receiving support from 80% of the network’s active stakers.

ülkeninparasıDecentdot usdt price binanceralized ExchangesülkeninparasıDecentralized bitcoin exchanges are those that are operated without a central authority. These exchanges allow peer-to-peer trading of digital currencies without the need for an exchange authority to facilitate the transactions.

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ülkeninparasıThere are a number of benefits to decentralized exchanges. First, many cryptocurrency users feel that decentralized exchanges better match the decentralized structures of most digital currencies themselves; many decentralized exchanges also require less personal information from their members than other types of exchanges. Second, if users transfer assets directly to other users, that eliminates the need for the transferring of assets to the exchange, thereby reducing the risk of theft from hacks and other fraud. Third, decentralized exchanges may be less susceptible to price manipulation and other fraudulent trading activity.ülkeninparasıOn the other hand, decentralized exchanges (like all cryptocurrency exchanges) must maintain a fundamental level of user interest in the form of trading volume and liquidity. Not all decentralized exchanges have been able to achieve these important baseline qualities. Further, users of a decentralized exchange may have less recourse if they are the victims of fraud than those who make use of exchanges with centralized authorities.ülkeninparasıSpecial ConsiderationsülkeninparasıFeesülkeninparasıMaking deposits and withdrawals comes at a price, depending on the payment method chosen to transfer funds. The higher the risk of a chargeback from a payment medium, the higher the fee. Making a bank draft or wiring money to the exchange has a lesser risk of a chargeback compared to funding your account with PayPal or a credit/debit card where the funds being transferred can be reversed and returned to the user upon request to the bank.

ülkeninparasıIn addition to transaction fees and funds transfer fees, traders may also be subject to currency conversion fees, depending on the currencies that are accepted by the bitcoin exchange. If a user transfers Canadian dollars to an exchange that only deals in U.S. dollars, the bank or the exchange will convert the CAD to USD for a fee. Transacting with an exchange that accepts your local currency is the best way to avoid the FX fee.ülkeninparasıAll bitcoin exchanges have transaction fees that are applied to each completed buy and sell order carried out within the exchange. The fee rate is dependent on the volume of bitcoin transactions that is conducted.ülkeninparasıKabul is a city still waiting for its new life to take shape - a lot depends on the will and whims of its new Taliban masters. But it is hunger that could become the worst of Afghanistan's many crises.

ülkeninparasıFor the poor of the city, the majority, scraping together a few hundred Afghanis, a couple of dollars, to stave off starvation is the biggest challenge.ülkeninparasıMillions live in desperate poverty in a country that has received huge sums in foreign aid. The money left over that might help them, around $9bn in central bank reserves, is frozen by the Americans to keep it away from the Taliban.ülkeninparasıAt dawn, hundreds of construction workers gather in one of Kabul's open-air markets with their tools looking for a day's work.ülkeninparasıBig building projects in the city have stopped. The banks are closed. The foreign money tap has been turned off. What is left amounts to a few drips.

A handful of the construction workers get picked up for work. The rest are getting angry. One of the men, Hayat Khan, raged about the fortunes stolen by a corrupt elite in the last 20 years."Wealthy people think about themselves, not the poor. I can't even buy bread. Believe me I cannot find a single dollar and the rest of the rich people put the aid dollars from the West in their pockets.

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"No-one cares for the poor people. When aid comes from outside, the people in power made sure it went to their relatives, not to the poor."Mohammed Anwar, lucky enough to have an office job, stopped to listen to my interviews with the building workers, and then chipped in, speaking English, accusing the Americans of theft."In the name of Allah, we call on America to give us the money they have taken from the Afghan government. It must be used to rebuild Afghanistan."At that point a Taliban official, a forceful man with a bushy black beard intervened. He told us to leave the area, saying it was dangerous.

I had not detected any sense of threat, but it was not the time and place to argue. He was shadowed by a Taliban bodyguard wearing wraparound sunglasses, in the US military style, and carrying a US-made assault rifle.The movement's fighters are very visible in the centre of the capital of the republic they have renamed as an Islamic emirate. At the airport they are dressed in American uniforms.Across the city they are more likely to wear much more familiar traditional dress like the shalwar kameez and dusty black turbans. All of them carry assault rifles.The most common lament I heard in Kabul in the last week was about the price of food and the desperation of parents who are struggling to feed their children. Food prices are rocketing. Millions struggle to feed their families.

Markets have sprung up across the city, as people who had managed to accumulate a few trappings of prosperity in the old Afghanistan sell their possessions to raise a little cash, mostly for food.I saw carts arriving carrying the contents of peoples' homes, from valuable carpets or TVs to jumbles of crockery and cutlery. One man was selling a rubber plant. Many were selling and few were buying. There isn't the cash. The sprawling second-hand markets are full of despair.

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Threats to personal freedom, girls' education and the right of women to work have been condemned across the world. But the prospect of going to bed hungry has an urgency all of its own.Countries that want to help Afghans but reject the Taliban and all it stands for face a big dilemma. For people to be able to work to earn money, to live and to eat, the Taliban has to run a viable state in Afghanistan.

But many in the US, Britain and the other countries that fought the Taliban would find it hard to stomach anything that looked like a success for their old enemies.The alternative might be worse; the prospect of more misery for the people, more refugees, more malnourished children, the risk that Afghanistan will once again become a failed state and a land of opportunity for jihadist extremists.A community high above the city carries the scars of 40 years of war. So do the families who live here. War punctuates all their stories.One of the families has had enough. Their flat was almost empty, the possessions sold at the second-hand markets to raise money for them all to leave for Pakistan.The mother, who I'm not going to name, was the only breadwinner, teaching students electrical engineering. They are all male, so the Taliban stopped her working, and also stopped her youngest daughter's education.She was composed and determined, but her voice thickened with sobs when I asked her how hard it was to leave her home.

"I am so sad. My heart has been burning since the day I made the decision to leave. How could I have done it - but what could I do?"If we stay, I don't think they will let us work or allow us education. How can I feed my family? I can tolerate going hungry. But I can't watch my kids starve."

Their dreams were always fragile in a state riddled with corruption, which could not survive the departure of its foreign backers.Afghanistan's newest crisis is about fundamentals of life - food, security and hope - and the despair and anger when they have gone.

At the age of eight, Leon Portz was gradually losing his eyesight due to a congenital condition when he was given his first computer. By the age of nine, he had figured out how to speed up the machine-generated voice that read out websites and other electronic texts, allowing him to grasp the information faster. He now listens to texts at five times the standard speed, which is unintelligible to an untrained ear.But his love of science only truly flourished when he moved from his hometown in central Germany to the nearby town of Marburg, a leafy, medieval university town, to attend a specialist school for the blind. As it turned out, that move transported him into a hotbed of inclusive innovation.

Marburg proudly calls itself a "Blindenstadt", a city for blind and visually impaired people, due to its long history as a hub for accessibility. A ground-breaking educational institute for the blind, the Blindenstudienanstalt (or Blista) in German, was founded here during World War One, to provide opportunities for young men blinded in the war. The institute has spawned countless inventions for blind people since then, including a tactile mathematical font. It has also profoundly shaped the town around it, turning it into a place where, as Portz puts it, "everything is ideal for blind people".Some of the innovations that make Marburg so accessible also exist elsewhere. But the way they are joined up here is unique, Portz and other blind people who have lived in the town say. The clattering sound of guiding canes is ubiquitous in Marburg, as blind people navigate the town aided by beeping traffic lights, pavements and floors with ridges and bumps that act as tactile signals of hazards or barriers. Buildings often have raised maps and floor plans, while detailed miniature bronze models of major sights such as Marburg's castle and town square allow blind visitors to feel the entirety of each landmark.Other convenient features are a result of the town's natural shape. Marburg is small and hilly, making it easy to orient yourself simply by noting if you are going up- or downhill. A web of accessible leisure facilities spans the city, such as a horse-riding school for the blind, and blind rowing, football, climbing and skiing clubs. The town's university has Germany's highest proportion of blind students, and the widest range of degrees taken by blind people.The Blista and its students have driven many of these innovations, developing everyday aids such as a foldable cane, but also, working with the university to improve accessibility across departments. Law and psychology are among the most popular course choices, as the materials are text-heavy and can be studied easily with aids such as screen readers. Now teachers and pupils from the institute are prising open another field: the natural sciences, which have long been beset by barriers for blind people.

"I don't feel like a pioneer, but I guess I am one," says Portz, who is studying biochemistry and computer science in Düsseldorf. He is the first blind biochemistry student there, and by his own estimate, one of fewer than a handful of blind chemistry students in all of Germany.Chemistry remains relatively closed to the blind, due to the hazards of laboratory work, and the ubiquity of images, charts and graphs. But chemistry teacher Tobias Mahnke, who taught Portz at the Blista-associated Carl-Strehl-School in Marburg, argues there is no reason why his subject should be so restricted.

"No human being can see molecules, no human being can see atoms, and yet, chemistry education is so visual. Why? There shouldn't be any disadvantage for blind people, given that sighted people can't see all this, either," he says.Mahnke, who is sighted, started working at the school in 2013. At the time, it didn't offer an advanced chemistry class. Since then, he and his colleagues have developed an array of multi-sensory tools and methods for teaching natural sciences, supported by the chemistry faculty at Philipps University in Marburg, as well as funding from the charitable Reinhard-Frank-Foundation. Mahnke has written a master's thesis on developing inclusive materials for teaching chemistry, and published some of his findings.

Unlike conventional science models used in classrooms, the Blista models are designed to reveal entire processes and wide-ranging relationships. For example, a three-dimensional model of a water molecule, developed by a group of chemists at different universities, can be squashed flat, to encourage students to think about how it is depicted in two dimensions. A 3D-printed plastic model of a curving river bed, developed by Mahnke's colleague Tanja Schapat, is intended to be held under a tap. Students can feel where the water flows faster or slower, and how this shapes its contours. They then learn that where the bed is flatter, the water is shallower and therefore gets warmer in the sun, attracting fish and reeds."Most scientific experiments go far beyond seeing. You can touch things, something becomes warm or cold, you can smell and hear things, and in experiments with food, taste them," says Mahnke as he shows the models via video. "In regular teaching, we focus on vision because it means I can demonstrate an experiment within five seconds, and it can be seen by 30 students. It's fast and efficient for the teacher, but not for the pupils."

In 2017, the school offered its first advanced chemistry course, and in 2019, demand was so strong that it offered two classes. The laboratory is adapted to blind pupils' needs, with electric burners in perforated metal cases, instead of bunsen burners with naked flames. Mahnke and his colleague Tanja Schapat have developed a method for teaching pupils about heat and fire, using heat-sensitive swelling paper to allow them to explore the properties of a burning candle. A special sensor, developed at the school in the 1990s, emits a high or low beep when a liquid brightens or darkens during a chemical reaction.During the pandemic, Mahnke taught students about the Covid-19 infection curve using raised charts printed on swelling paper. When the school closed to stop the spread of the virus, teachers posted models to home-schooling students. Each model is tested by pupils at the school, further refined with their input, and produced in the school's in-house workshop.In recent years, the Carl-Strehl-School has started accepting a limited number of sighted children, who learn alongside their blind classmates using multisensory materials, which in their case also incorporate sight. Research has shown that children and adults learn better when they can grasp new information with multiple senses, and not just visually. Mahnke says in his own experience, "multi-sensory experiences lead to much deeper and longer-lasting learning".For Portz, it was not just the school that broadened his world. He fondly recalls moving around Marburg with confidence, assisted by beeping traffic lights, talking bus stops, and a sighted population very used to interacting with the blind. Bus drivers in Marburg are trained to stop to give blind passengers easy access, shop assistants routinely deal with blind customers, and many restaurants offer menus in Braille script. He's encountered some of these elements in other cities, but never in the form of such a comprehensive web.

"In Marburg, all these individual elements are very well-connected, and there are few gaps," he says. "It's also the mentality in Marburg. There's the Blista, and many stay on to study at the university, so there are many blind people, and every institution is confronted with that, sooner or later."Uwe Boysen is a retired blind judge and former president of Germany's association of blind and visually impaired students and professionals, the DVBS, which was founded in Marburg. He attended the Carl-Strehl-School and then studied law in Marburg in the late 1960s. In his opinion, the sense of community and self-help that has evolved in Marburg plays a crucial part in sparking innovation: "It gives you courage, it makes you dare to try out new things."

That self-help spirit shaped Boysen's own educational path. Professional opportunities for blind people were more limited when he was a student, though he estimates there were about the same number of blind judges in Germany as there are today, over 100, also because of the war blind. He and his blind peers invented many aids on the fly, swapping recorded tapes of their textbooks, and later, using their legal skills to campaign for more rights.Bahaddin Batmaz, a blind software developer and accessibility trainer in Marburg, argues that many of its accessible features hold important lessons for innovation as a whole. One is that good design benefits everyone. He gives the example of the talking bus stops, which announce the next bus and its destination when a button is pressed. In his experience, many sighted people find this function convenient, too. Similarly, when he makes a website more accessible to screen readers, its search ranking usually jumps as well, because the underlying technology is the same.

"Linking together technological innovations, and the human and social factor, is hugely beneficial," he says. "If you're not constantly wondering how to cross the road, you're less stressed. You're not already totally overwhelmed by this stupid road, and then you're also more open for innovation, and more accepting of others."Dago Schelin, a sighted filmmaker and media studies researcher at the Philipps University, comes to a similar conclusion in a case study of Marburg as a model for inclusive innovation. He and his co-authors describe it as a "smart city for the blind", and argue that "Marburg appears to specialise in an alternative mode of smartness". Instead of revolving around digital technologies, this type of smartness is more human-oriented. It centres on supportive interactions between differently abled people, and on accessible institutions. Schelin and his co-authors suggest that Marburg might become "a reference for prospective smart cities", with accessibility perhaps becoming "one of the criteria for a city's smartness status."

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Perspectives of a 2x entrepreneur turned VC at @UpfrontVC#

Mark Suster

Written by

2x entrepreneur. Sold both companies (last to salesforce.com). Turned VC looking to invest in passionate entrepreneurs 〞 I*m on Twitter at @msuster

Both Sides of the Table

Perspectives of a 2x entrepreneur turned VC at @UpfrontVC, the largest and most active early-stage fund in Southern California. Snapchat: msuster

Mark Suster

Written by

2x entrepreneur. Sold both companies (last to salesforce.com). Turned VC looking to invest in passionate entrepreneurs 〞 I*m on Twitter at @msuster

Both Sides of the Table

Perspectives of a 2x entrepreneur turned VC at @UpfrontVC, the largest and most active early-stage fund in Southern California. Snapchat: msuster