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济南小儿类风湿如何治疗
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发布时间: 2025-06-02 09:01:32北京青年报社官方账号
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  济南小儿类风湿如何治疗   

The current day trading boom will end as these frenzies always do: in tears. While we wait for the inevitable crash, let’s review not only why day traders are doomed but also why most people shouldn’t trade, or even invest in, individual stocks.Day trading basically means rapidly buying and selling investments, hoping to profit from small price fluctuations. Brokerages have reported a surge in trading and new accounts this year, starting with March’s stock market crash when investors rushed in looking for bargains. As pandemic lockdowns kept people from their jobs and classrooms, trading continued to soar, especially among young adults.The poster child for this gold rush is Robinhood, a commission-free investing app that uses behavioral nudges to encourage people to trade. Robinhood added over 3 million accounts this year and in June logged more trades than any of the established, publicly traded brokerages. More than half of its customers are opening their first investment account, the company says.People can start trading with small amounts of money because Robinhood offers fractional shares. In addition to stocks and mutual funds, the app allows trading in options, cryptocurrencies and gold. Customers start out with a margin account, which allows them to borrow money to trade and amplify both their gains and their losses.Alexander Kearns, 20, is one example of what can go wrong. The University of Nebraska student killed himself after seeing a 0,165 negative balance in his Robinhood account. The novice trader may have misunderstood a potential loss on part of an options tradethat he made using borrowed money as a loss on the whole transaction. In reality, he had ,000 cash in his account when he died.Research has shown that the vast majority of day traders lose money, and only about 1% consistently get better returns than a low-cost index fund. A rising stock market, and a flood of inexperienced and excitable investors willing to bid up stock prices, has convinced more than a few day traders that they’re part of that 1%. They’re being egged on by the few people who actually will make money: the hucksters selling seminars, e-books and strategies that purport to teach you how to successfully trade.Stocks don’t always go upStocks overall are an excellent way to gain wealth over the long term. If you can weather the downturns, stocks historically have offered good returns.Those downturns can be doozies, however. Stocks lost half their value during the Great Recession that started December 2007. The market lost nearly 90% of its value in the early years of the Great Depression.Extended downturns have popped previous day trading bubbles, including the one that formed during the dot-com boom. The Nasdaq composite stock index rose 400% in five years, only to lose all of those gains from March 2000 to October 2002.Markets that go down eventually come back up. That’s not true of individual stocks. Any single stock can lose value, sometimes all the way to zero, and never recover.The sensible way to hedge that risk is diversification. That means buying stocks in many, many companies, including companies of different sizes, in different industries and in different countries. That’s prohibitively expensive for most individual investors, which is why mutual funds and exchange-traded funds are a better bet.There’s no such thing as a free tradeAnother way to grow wealth is to minimize investing costs. That means trading less, not more, because trading incurs costs even when there are no commissions involved.Investments held more than a year benefit from favorable capital gains tax rates, for example. Those held less than a year are taxed as income if the trade wasn’t made in a tax-deferred account such as an IRA.Another way cost is incurred is in what’s known as the bid/ask spread. The banks and financial institutions that facilitate trading in various stocks are called market makers. They offer to sell stocks at a certain price (the ask price) and will purchase at a slightly lower price (the bid price). People who trade stocks instantly lose a little money on each transaction because of this difference. That’s not a big deal for infrequent traders, but the costs add up if you churn stocks in and out of your portfolio.The biggest potential cost, though, is that every trade exposes your portfolio to the many ways we humans have of screwing up our money. We’re loss-averse and we want to avoid regret, so we hang on to losing stocks. We think that we can predict the future or that it will reflect the recent past, when this year should have taught us that we can’t and it won’t.We also think we know more than we do, a cognitive bias known as overconfidence. If you’re determined to trade, or day trade, don’t gamble more than you can afford to lose, because you almost certainly will.This article was written by NerdWallet and was originally published by the Associated Press.More From NerdWalletSuddenly Retired? Here’s What to Do NextSmart Money Podcast: Sudden Retirement and Finding Lost MoneyYou Can Use a Crisis to Build Helpful Money HabitsLiz Weston is a writer at NerdWallet. Email: lweston@nerdwallet.com. Twitter: @lizweston. 5216

  济南小儿类风湿如何治疗   

The Cambridge Analytica scandal has had a number of serious repercussions for Facebook, its users, and the future of privacy around the world.It also temporarily stopped single people from finding true love on Tinder.Shortly after Facebook announced stricter rules for its third-party developers, popular dating app Tinder stopped working. Singles who tried to get some swiping in on their lunch breaks weren't allowed to log in to the app. A pop-up window said "Tinder requires you to provide additional Facebook permissions in order to create or use a Tinder account." Like many apps, Tinder primarily lets people log in with their Facebook credentials."This was part of the changes that we announced today, and we are working with Tinder to address this issue," a Facebook spokesperson told CNN Tech.Upset Tinder users took to Twitter to vent.Facebook is still recovering from revelations that Cambridge Analytica, a data firm with connections to the Trump campaign, accessed the data of millions of its users. Facebook has been rushing to repair its relationship with users, and prevent any future misuses of data by third-parties.On Wednesday, it announced changes to what personal information apps can collect."We will also no longer allow apps to ask for access to personal information such as religious or political views, relationship status and details, custom friends lists, education and work history, fitness activity, book reading activity, music listening activity, news reading, video watch activity, and games activity," Facebook said in its post.It is unclear exactly which part of Facebook's updates caused the issues with Tinder. The app shows you information about potential paramours like age, location and where they went to school. Other dating apps that use Facebook to login, like Bumble, did not experience outages.After Tinder was fixed, many users said their matches were all missing. After a few hours, those matches appeared to have been restored as well.As off Wednesday afternoon, people were able to use the app and -- if only for a moment -- feel a little less alone in the world. 2123

  济南小儿类风湿如何治疗   

The current pandemic has led many people to spend more time outside this summer, with many setting up backyard pools or heading to lakes and beaches. But all of that water recreation has led to a spike in drownings."We were seeing it across a national level and when we looked at our local data, we saw that we were following as part of that trend," said Dawne Gardner, an Injury Prevention Specialist with Cincinnati Children's Hospital. Normally, they see anywhere from one to three child drowning deaths a year. This summer, they've seen nine."We know that with parents, they're looking for alternative vacations and things are limited right now with COVID-19 and still being able to social distance. We know that with those limited options, parents are utilizing backyard pools more," said Gardner. Gardner says it may seem safe to have your child swimming in your backyard but she says safety goes way beyond location. Supervision is key."You can't be distracted. So, when kids are in and around water, parents have to be on top of the supervision. Every second counts. And if you take your eyes off of them in the water even for a second, that could be that quiet second that a child slips under water," said Gardner.Other areas of the country also saw a dramatic change in the number of child drownings, but not all were bad. Johns Hopkins All Children's Hospital in St. Petersburg, Florida reported that from March through June, doctors saw a 150 percent increase in child drownings and near-drownings compared to the same time period last year. While at Valley Children's Hospital in Fresno County, California, officials reported a sharp decline in child drownings. The shelter-in-place restrictions from the COVID-19 pandemic don't just prompt families to take part in more water-related activities, they did so at a time when most swimming lesson facilities had to shut down.It was a concern for Aqua-Tots that kids were missing out on a crucial time for swim lessons. "It was incredibly hard to close the doors to our businesses at such a crucial time of year where families and children are outside in the heat and they're flocking to bodies of water. They're swimming a lot more often so it was very tough," said franchise owner Lindsay Thayer of Aqua-Tots. Aqua-Tots has 100 locations in 14 different countries, including here in the U.S. They teach swimming lessons to children, teens and adults. Thayer says to help prevent accidental drownings, children need to learn water safety."Children need to know that they need to ask permission, when to approach a body of water, when to get into a pool or lake with mom or dad, a guardian or adult before doing so. Also, swim lessons are especially important. Participating in a formal swimming lesson program can reduce the risk of drowning by 88% in children between the ages of one and four," said Thayer.Jen Deis, the General Manager of Goldfish Swim School near Cincinnati agrees. Goldfish Swim School provided some online tutorial videos for parents to help them teach their children some basic swimming skills. But she says swim lessons, even during the winter, are vital."Swimming is like any other sport or skill. Kids need constant reinforcement of those swim skills to remember those water safety skills year round. While, right now it is a top priority, with kids around bodies of water a lot of times, keeping them consistent in their swim lessons is really important," said Deis.Cincinnati Children's Hospital reports the nine drowning victims ranged in ages from young children to teenagers. Ensuring fences or other barriers are around pools is also important.They're urging parents to be vigilent when it comes to keeping your children safe around water, hoping to prevent any more accidental drowning deaths this summer. 3807

  

The Florida House on Wednesday passed legislation that would impose new restrictions on firearm sales and allow some teachers and staff to carry guns in school.The Marjory Stoneman Douglas High School Public Safety Act was spurred by the February 14 shooting in Parkland, Florida. The bill, which passed 67-50, now goes to Gov. Rick Scott. He has 15 days to sign it.Earlier in the day, Scott expressed reservations about the provision to arm school personnel. He vowed to review the bill "line by line" before signing it."The group that I'm going to be talking to -- the groups that I care most about right now because it impacted them so much -- is the families," Scott said.Speaking on behalf of the 17 families who lost loved ones in the shooting, Andrew Pollack, whose daughter was killed, urged Scott to sign the bill."We stand united in asking him to sign this historic bill into law," he said after the bill's passage."We thank the House and Senate for voting in favor of protecting our children, but more needs to be done and it's important for the country to unite in the same way the 17 families united in support of this bill."Scott also concerned about waiting period 1187

  

The country is heading into a COVID-19 winter without fully deploying widespread testing of sewage for traces of coronavirus, a Newsy investigation has found.Wastewater surveillance is one of the few proven tools able to track community spread of the disease, with the potential to help monitor immunity rates from new vaccines."It is frustrating," said David Larsen, an associate professor of public health at Syracuse University's Falk College. "We're going to see a huge amount of sadness over the next few months. And it's not too late to scale up wastewater surveillance at this time to help us with that."Early on, scientists realized infected people shed the virus in stool.The federal government began a big effort for analyzing the concentration of the virus in community wastewater."It's something I think from a national level we need to pursue," Assistant Secretary for Health ADM Dr. Brett Giroir said during a July webinar.Months later, the government has left it to state and local authorities to launch their own programs.For some, that's been a challenge.Newsy learned New York State, for example, suspended its sewage surveillance pilot after a month in part because of an equipment shortage.As a result, testing stopped in four places including Albany and Erie County, home of Buffalo.The University of Buffalo helped lead the project."UB is in the process of acquiring enough materials to continue the monitoring effort moving forward," university spokesman Cory Nealon said in an emailed statement.As with PPE, there is a global shortage of supplies needed to test sewage for COVID.Other places are struggling with how to pay for sewage analysis, with coronavirus aid from Washington running dry."The biggest factor, the limiting factor, is finances," Larsen said.The result is a patchwork of places examining wastewater across the country, mainly big cities and college campuses."It's not really a unified strategy, unfortunately," said Colleen Naughton, an assistant professor of civil and environmental engineering at the University of California Merced.She and her team plot testing sites on a map."When you zoom out of course the bubbles are big, so it looks like all U.S. is covered," Naughton said. "But when you zoom in you see it's a bit more spread out."Three states, Iowa, Rhode Island and South Dakota, don't have any surveillance sites at all, she said.Biobot Analytics looks for COVID in wastewater for about 200 cities and counties but has the capacity to do much more, said company president and cofounder Newsha Ghaeli."We're at the beginning, let's say that," Ghaeli said. "There hasn't really been a strong coming together yet around a specific approach or even standards."The CDC is still putting together a national wastewater surveillance system, building out a database not available to the public yet."It is, I think, valuable for the public to see that data and take action as a deciding factor for what activities and what risks am I going to take?" Naughton said. 3019

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