TED Talks - آموزش زبان

برای مطالعه مقاله چرا باید انگلیسی یاد بگیریم به لینک زیر مراجعه کنید👇👇 https://b2n.ir/s80518 Join ➣ @BestIELTS ☜عضويت www.bestielts.ir

🔴The surprising health benefits of dreaming Why do we dream? Well, we dream for at least several different reasons. One key benefit is creativity. Sleep, including dream sleep, is associated with an enhanced ability to solve next-day problems. It's almost as though we go to sleep with the pieces of the jigsaw, but we wake up with the puzzle complete. The second benefit of REM-sleep dreaming is emotional first aid. REM sleep takes the painful sting out of difficult emotional experiences so that when we come back the next day, we feel better about those painful events. You can almost think of dreaming as a form of overnight therapy. It's not time that heals all wounds, but it's time during dream sleep that provides emotional convalescence. Now, it's not just that you dream. It's also what you dream about that seems to make a difference. Scientists have discovered that after learning a virtual maze, for example, those individuals who slept but critically also dreamed about the maze were the only ones who ended up being better at navigating the maze when they woke up. And this same principle is true for our mental health. For example, people going through a difficult or traumatic experience such as a divorce, and who are dreaming about that event, go on to gain resolution to their depression relative to those who were dreaming but not dreaming about the events themselves. All of which means that sleep and the very act of dreaming itself appears to be an essential ingredient to so much of our waking lives. We dream, therefore we are. #Sleep #Human_Bod #Science #Humanity 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴The surprising health benefits of dreaming #Sleep #Human_Bod #Science #Humanity 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

Now, thinking back on all the solutions I listed earlier, we can see that they all have something in common with the others but not with our eyes, and that is that they're all static. It's like the optical equivalent of a pirate with a peg leg. What is the optical equivalent of a modern prosthetic leg? The last several decades have seen the creation and rapid development of what are called "focus-tunable lenses." There are several different types. Mechanically-shifted Alvarez lenses, deformable liquid lenses and electronically-switched, liquid crystal lenses. Now these have their own trade-offs, but what they don't skimp on is the visual experience. Full-field-of-view vision that can be sharp at any desired distance. OK, great. The lenses we need already exist. Problem solved, right? Not so fast. Focus-tunable lenses add a bit of complexity to the equation. The lenses don't have any way of knowing what distance they should be focused to. What we need are glasses that, when you're looking far, far objects are sharp, and when you look near, near objects come into focus in your field of view, without you having to think about it. What I've worked on these last few years at Stanford is building that exact intelligence around the lenses. Our prototype borrows technology from virtual and augmented reality systems to estimate focusing distance. We have an eye tracker that can tell what direction our eyes are focused in. Using two of these, we can triangulate your gaze direction to get a focus estimate. Just in case though, to increase reliability, we also added a distance sensor. The sensor is a camera that looks out at the world and reports distances to objects. We can again use your gaze direction to get a distance estimate for a second time. We then fuse those two distance estimates and update the focus-tunable lens power accordingly. The next step for us was to test our device on actual people. So we recruited about 100 presbyopes and had them test our device while we measured their performance. What we saw convinced us right then that autofocals were the future. Our participants could see more clearly, they could focus more quickly and they thought it was an easier and better focusing experience than their current correction. To put it simply, when it comes to vision, autofocals don't compromise like static corrections in use today do. But I don't want to get ahead of myself. There's a lot of work for my colleagues and me left to do. For example, our glasses are a bit -- bulky, maybe? And one reason for this is that we used bulkier components that are often intended for research use or industrial use. Another is that we need to strap everything down because current eye-tracking algorithms don't have the robustness that we need. So moving forward, as we move from a research setting into a start-up, we plan to make future autofocals eventually look a little bit more like normal glasses. For this to happen, we'll need to significantly improve the robustness of our eye-tracking solution. We'll also need to incorporate smaller and more efficient electronics and lenses. That said, even with our current prototype, we've shown that today's focus-tunable lens technology is capable of outperforming traditional forms of static correction. So it's only a matter of time. It's pretty clear that in the near future, instead of worrying about which pair of glasses to use and when, we'll be able to just focus on the important things. Thank you. #Sight #Engineering #Technology #TEDx #Future 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴Autofocusing reading glasses of the future Every single one of us will lose or has already lost something we rely on every single day. I am of course talking about our keys. Just kidding. What I actually want to talk about is one of our most important senses: vision. Every single day we each lose a little bit of our ability to refocus our eyes until we can't refocus at all. We call this condition presbyopia, and it affects two billion people worldwide. That's right, I said billion. If you haven't heard of presbyopia, and you're wondering, "Where are these two billion people?" here's a hint before I get into the details. It's the reason why people wear reading glasses or bifocal lenses. I'll get started by describing the loss in refocusing ability leading up to presbyopia. As a newborn, you would have been able to focus as close as six and a half centimeters, if you wished to. By your mid-20s, you have about half of that focusing power left. 10 centimeters or so, but close enough that you never notice the difference. By your late 40s though, the closest you can focus is about 25 centimeters, maybe even farther. Losses in focusing ability beyond this point start affecting near-vision tasks like reading, and by the time you reach age 60, nothing within a meter radius of you is clear. Right now some of you are probably thinking, that sounds bad but he means you in a figurative sense, only for the people that actually end up with presbyopia. But no, when I say you, I literally mean that every single one of you will someday be presbyopic if you aren't already. That sounds a bit troubling. I want to remind you that presbyopia has been with us for all of human history and we've done a lot of different things to try and fix it. So to start, let's imagine that you're sitting at a desk, reading. If you were presbyopic, it might look a little something like this. Anything close by, like the magazine, will be blurry. Moving on to solutions. First, reading glasses. These have lenses with a single focal power tuned so that near objects come into focus. But far objects necessarily go out of focus, meaning you have to constantly switch back and forth between wearing and not wearing them. To solve this problem Benjamin Franklin invented what he called "double spectacles." Today we call those bifocals, and what they let him do was see far when he looked up and see near when he looked down. Today we also have progressive lenses which get rid of the line by smoothly varying the focal power from top to bottom. The downside to both of these is that you lose field of vision at any given distance, because it gets split up from top to bottom like this. To see why that's a problem, imagine that you're climbing down a ladder or stairs. You look down to get your footing but it's blurry. Why would it be blurry? Well, you look down and that's the near part of the lens, but the next step was past arm's reach, which for your eyes counts as far. The next solution I want to point out is a little less common but comes up in contact lenses or LASIK surgeries, and it's called monovision. It works by setting up the dominant eye to focus far and the other eye to focus near. Your brain does the work of intelligently putting together the sharpest parts from each eye's view, but the two eyes see slightly different things, and that makes it harder to judge distances binocularly. So where does that leave us? We've come up with a lot of solutions but none of them quite restore natural refocusing. None of them let you just look at something and expect it to be in focus. But why? Well, to explain that we'll want to take a look at the anatomy of the human eye. The part of the eye that allows us to refocus to different distances is called the crystalline lens. There are muscles surrounding the lens that can deform it into different shapes, which in turn changes its focusing power. What happens when someone becomes presbyopic? It turns out that the crystalline lens stiffens to the point that it doesn't really change shape anymore.

🔴Autofocusing reading glasses of the future #Sight #Engineering #Technology #TEDx #Future 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

So I show up in classes and I conduct observations to give feedback, because I want my teachers to be just as successful as the name Mott Hall Bridges Academy. And I give them access to me every single day, which is why they all have my personal cell number, including my scholars and those who graduated -- which is probably why I get phone calls and text messages at three o'clock in the morning. But we are all connected to succeed, and good leaders do this. Tomorrow's future is sitting in our classrooms. And they are our responsibility. That means everyone in here, and those who are watching the screen. We must believe in their brilliance, and remind them by teaching them that there indeed is power in education. Thank you. #Community #Compassion #Future #Education #Motivation #Identity #Teaching #Social_Change 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴Why open a school To close a prison? When I opened Mott Hall Bridges Academy in 2010, my goal was simple: open a school to close a prison. Now to some, this was an audacious goal, because our school is located in the Brownsville section of Brooklyn -- one of the most underserved and violent neighborhoods in all of New York City. Like many urban schools with high poverty rates, we face numerous challenges, like finding teachers who can empathize with the complexities of a disadvantaged community, lack of funding for technology, low parental involvement and neighborhood gangs that recruit children as early as fourth grade. So here I was, the founding principal of a middle school that was a district public school, and I only had 45 kids to start. Thirty percent of them had special needs. Eighty-six percent of them were below grade level in English and in math. And 100 percent were living below the poverty level. If our children are not in our classrooms, how will they learn? And if they're not learning, where would they end up? It was evident when I would ask my 13-year-old, "Young man, where do you see yourself in five years?" And his response: "I don't know if I'm gonna live that long." Or to have a young woman say to me that she had a lifelong goal of working in a fast-food restaurant. To me, this was unacceptable. It was also evident that they had no idea that there was a landscape of opportunity that existed beyond their neighborhood. We call our students "scholars," because they're lifelong learners. And the skills that they learn today will prepare them for college and career readiness. I chose the royal colors of purple and black, because I want them to be reminded that they are descendants of greatness, and that through education, they are future engineers, scientists, entrepreneurs and even leaders who can and will take over this world. To date, we have had three graduating classes, at a 98 -- At a 98-percent graduation rate. This is nearly 200 children, who are now going to some of the most competitive high schools in New York City. It was a cold day in January when my scholar, Vidal Chastanet, met Brandon Stanton, the founder of the popular blog "Humans of New York." Brandon shared the story of a young man from Brownsville who had witnessed violence firsthand, by witnessing a man being thrown off of a roof. Yet he can still be influenced by a principal who had opened up a school that believes in all children. Vidal embodies the story of so many of our underprivileged children who are struggling to survive, which is why we must make education a priority. Brandon's post created a global sensation that touched the lives of millions. This resulted in 1.4 million dollars being raised for our scholars to attend field trips to colleges and universities, Summer STEAM programs, as well as college scholarships. You need to understand that when 200 young people from Brownsville visited Harvard, they now understood that a college of their choice was a real possibility. And the impossibilities that had been imposed upon them by a disadvantaged community were replaced by hope and purpose. The revolution in education is happening in our schools, with adults who provide love, structure, support and knowledge. These are the things that inspire children. But it is not an easy task. And there are high demands within an education system that is not perfect. But I have a dynamic group of educators who collaborate as a team to determine what is the best curriculum. They take time beyond their school day, and come in on weekends and even use their own money to often provide resources when we do not have it. And as the principal, I have to inspect what I expect.

🔴Why open a school To close a prison? #Community #Compassion #Future #Education #Motivation #Identity #Teaching #Social_Change 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

Now I know what you’re thinking: it’s hard to say no to a meeting. But it really isn’t. Simply tell the organizer the truth. You know that they’ve got this, and if they need you, simply give you a ring. You can also use the opportunity to delegate the meeting to a high performer or subject matter expert who may be a better choice anyway. You can even simply let them know you have other priorities that week and ask if your attendance is necessary. All you need to do is communicate with honesty and clarity. Tip number five: be ruthless with your time. As any flight attendant will tell you, you have to put your own oxygen mask on first. It’s the only way you can be at your best for others, so give yourself time to do the things you need to in order to feel like a human being. That includes scheduling blocks of uninterrupted time to focus on your own work. If you have a project that going to take you 10 hours of really focused time and effort, schedule that time in your calendar. Try putting in “no-fly zones” two hours a day, a few days a week, at whatever time you’re at your most productive. You don’t have to make these changes in a vacuum, like it’s some kind of secret. You can tell people that you’re trying something new and taking control of your calendar. And you do not have to do everything at once. Simply pick one idea and try it. People will not only understand it, but they’ll appreciate it. So the only question left is: Do you have the courage to own your own calendar? I think you do. #Business #Work_Life_Balance #Work #Leadership 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴5 tips for dealing with meeting overload Have you ever reached the end of what feels like a grueling workday only to realize you didn’t actually accomplish anything? That it was just meeting after meeting after meeting after meeting after meeting -- As a recovering corporate executive, I know we all feel like our time isn’t our own, like other people are controlling our calendars and we’re simply reacting to their whims. But calendar creep isn’t inevitable. There's so much in the world we can't control. We can’t control our senior leaders, we can’t control our customer demands, and we certainly can’t control a global pandemic. But we can actually control our time, we’ve just forgotten how to do it. I’ve come up with five, easy-to-implement steps that can take your calendar from working against you to working for you. And they really work. We worked with a big global company and asked some of their leaders to put these tips into practice while others didn’t. And guess what? The leaders who used these steps saw significant hours open up on their calendars for, you know, actual work. Tip number one: Ask yourself, “Do you really need the meeting?” We’re under the illusion that we need a meeting for everything. We think “I need to make sure so-and-so is OK with this so I’ll book time.” Or “I’ve got a quick question on process, I’ll grab a meeting.” The reality is for almost half of the meetings we schedule, we could simply pick up the phone or shoot a text for a quick answer. A trick to stop this: when you’re thinking of calling a meeting, write the invitation first. And if you can’t start with a subject line with an action verb, you shouldn’t have the meeting. “Decide, finalize, create next steps.” Those are reasons to call a meeting. “Review,” on the other hand, isn’t an action verb. If you're calling a meeting to review something, send it out ahead of time and schedule a 15-minute meeting for questions. That should get Joe to finally read the deck. Related to that action verb, if you’re going to call a meeting you should be able to create a clear purpose statement. “In this meeting we’re going to decide boom, boom, boom. Come prepared.” You don’t need a whole agenda; nobody’s going to read it anyway. But that purpose statement is enough so that when you start, everybody is sitting up, paying attention and focused on the goal. Tip number two: invite the least number of people possible. Let’s be honest, most of us invite people to meetings defensively. We know that Raco’s the one we need but if Dion doesn’t feel like he’s involved, he’s going to be cranky, so you invite him and then Shannon and then Jane. And now we’re wasting all of these people’s time instead of just going directly to the decision maker. It’s time to let go of those grade-school fears and just invite the people who are necessary for the objective. Everyone else can be informed later. Let’s also agree it’s OK if we’re not invited to everything. Research has found that the optimal size of a decision-making meeting is around five to eight people. Any time you're inviting more, you're making it less likely you'll achieve your goal. Tip number three: make your meetings shorter. If you want your time back, ditch the hour-long meeting. I schedule 30- and 45-minute meetings. That’s it, period. Full stop. That gives people time to digest, figure out next steps, then take a breath and maybe, I don’t know, go to the bathroom. It stops that horrible snowball of lateness that rolls downhill over the course of a day. Tip number four: say no to other’s people’s meetings. We’re in the habit of saying yes to every meeting we’re invited to. Often we show up out of fear of missing out, or worse yet, ego. Neither of those is a reason to spend your precious time in a meeting. A better way to decide: Ask yourself, “Is my opinion absolutely vital to the purpose of this meeting?” Even better, “Does this meeting move my goals, my team’s goals or my customers’ goals forward?” If not, just say no.

🔴 5 tips for dealing with meeting overload #Business #Work_Life_Balance #Work #Leadership 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴Being Human #Spoken_Word #Poetry #Nature #Art #TED_Fellows 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴آیلتس چیست؟ [همه چیز از 0 تا 100 آزمون آیلتس] 🔻واژه IELTS مخفف ۵ کلمه ی International English Language Testing System به معنای سیستم بین المللی ارزیابی زبان انگلیسی می باشد. آیلتس معتبرترین آزمون بین المللی سنجش زبان انگلیسی است که ...  📃 ادامه مطلب Join ➣ @BestIELTS www.bestielts.ir

🔴The Birth Of Wikipedia #Business #Collaboration #Culture #Invention #Media #Technology #Software 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

So far, the best idea I've heard about building grit in kids is something called "growth mindset." This is an idea developed at Stanford University by Carol Dweck, and it is the belief that the ability to learn is not fixed, that it can change with your effort. Dr. Dweck has shown that when kids read and learn about the brain and how it changes and grows in response to challenge, they're much more likely to persevere when they fail, because they don't believe that failure is a permanent condition. So growth mindset is a great idea for building grit. But we need more. And that's where I'm going to end my remarks, because that's where we are. That's the work that stands before us. We need to take our best ideas, our strongest intuitions, and we need to test them. We need to measure whether we've been successful, and we have to be willing to fail, to be wrong, to start over again with lessons learned. In other words, we need to be gritty about getting our kids grittier. Thank you. #Business #Education #Psychology #Success 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴The power of passion and perseverance When I was 27 years old, I left a very demanding job in management consulting for a job that was even more demanding: teaching. I went to teach seventh graders math in the New York City public schools. And like any teacher, I made quizzes and tests. I gave out homework assignments. When the work came back, I calculated grades. What struck me was that IQ was not the only difference between my best and my worst students. Some of my strongest performers did not have stratospheric IQ scores. Some of my smartest kids weren't doing so well. And that got me thinking. The kinds of things you need to learn in seventh grade math, sure, they're hard: ratios, decimals, the area of a parallelogram. But these concepts are not impossible, and I was firmly convinced that every one of my students could learn the material if they worked hard and long enough. After several more years of teaching, I came to the conclusion that what we need in education is a much better understanding of students and learning from a motivational perspective, from a psychological perspective. In education, the one thing we know how to measure best is IQ. But what if doing well in school and in life depends on much more than your ability to learn quickly and easily? So I left the classroom, and I went to graduate school to become a psychologist. I started studying kids and adults in all kinds of super challenging settings, and in every study my question was, who is successful here and why? My research team and I went to West Point Military Academy. We tried to predict which cadets would stay in military training and which would drop out. We went to the National Spelling Bee and tried to predict which children would advance farthest in competition. We studied rookie teachers working in really tough neighborhoods, asking which teachers are still going to be here in teaching by the end of the school year, and of those, who will be the most effective at improving learning outcomes for their students? We partnered with private companies, asking, which of these salespeople is going to keep their jobs? And who's going to earn the most money? In all those very different contexts, one characteristic emerged as a significant predictor of success. And it wasn't social intelligence. It wasn't good looks, physical health, and it wasn't IQ. It was grit. Grit is passion and perseverance for very long-term goals. Grit is having stamina. Grit is sticking with your future, day in, day out, not just for the week, not just for the month, but for years, and working really hard to make that future a reality. Grit is living life like it's a marathon, not a sprint. A few years ago, I started studying grit in the Chicago public schools. I asked thousands of high school juniors to take grit questionnaires, and then waited around more than a year to see who would graduate. Turns out that grittier kids were significantly more likely to graduate, even when I matched them on every characteristic I could measure, things like family income, standardized achievement test scores, even how safe kids felt when they were at school. So it's not just at West Point or the National Spelling Bee that grit matters. It's also in school, especially for kids at risk for dropping out. To me, the most shocking thing about grit is how little we know, how little science knows, about building it. Every day, parents and teachers ask me, "How do I build grit in kids? What do I do to teach kids a solid work ethic? How do I keep them motivated for the long run?" The honest answer is, I don't know. What I do know is that talent doesn't make you gritty. Our data show very clearly that there are many talented individuals who simply do not follow through on their commitments. In fact, in our data, grit is usually unrelated or even inversely related to measures of talent.

🔴The power of passion and perseverance #Business #Education #Psychology #Success 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜

🔴درس بیست و یکم کتاب 504 لغت ضروری همراه با مثال ، تلفظ و ترجمه فارسی 👇👇 https://b2n.ir/b46476 Join ➣ @BestIELTS ☜عضويت www.bestielts.ir

🔴3 rules to help you build a successful business #Creativity #Entrepreneur #Business #Leadership 🎙Join ➣ @TEDTalksLearning ☜ 🎙Join ➣ @TEDTalksLearning ☜