Acoustic levitation allows small objects, like droplets of liquid, to float. Unless you travel into the vacuum of space, sound is all around you every day. But most of the time, you probably don't think of it as a physical presence. You hear sounds; you don't touch them. The only exceptions may be loud nightclubs, cars with window-rattling speakers and ultrasound machines that pulverize kidney stones. But even then, you most likely don't think of what you feel as sound itself, but as the vibrations that sound creates in other objects. The idea that something so intangible can lift objects can seem unbelievable, but it's a real phenomenon. Acoustic levitation takes advantage of the properties of sound to cause solids, liquids and heavy gases to float. The process can take place in normal or reduced gravity. In other words, sound can levitate objects on Earth or in gas-filled enclosures in space.|Howard Hughes' enormous H-4 Hercules may still hold the record for wingspan. But that doesn't mean there's not a bigger plane out there. See more flight pictures. The quest to understand flight has obsessed humanity since man first looked up. Saw a bird soaring effortlessly across the sky. The quest to make everything bigger, better and faster has obsessed humanity since man first walked upright. Where the two obsessions meet we end up with some pretty incredible flying machines. Achieving controllable flight has not been an easy endeavor. Or a quickly advancing one. With a working, motorized airplane at last on record, man turned to his natural inclination and set about enlarging it. Another giant, the U.S. And the much-talked about Airbus A380, notoriously plagued by production problems but superlative to the nth degree, beats out the C-5 on wingspan (261 feet 10 inches or 79.8 meters) and the Spruce Goose on length (239 feet or 73 meters).
The Global food economy didn't exist then, so if you wanted peaches for cobbler, your dinner party had better be in June or July or you'd be eating your canned bounty from last season. Being able to add fresh cherries to a gelatin mold or make a dessert using tropical fruits like bananas or fresh pineapple were considered indulgences, too. If you lived in California, you might have offered guests a sliced avocado appetizer. If you were living in Kansas, though, you likely only knew "alligator pears" from magazines. If an avocado did make it to your local market, it would have cost a big chunk of you meal budget. The same goes for other regional delicacies like asparagus, soft-shelled crab and crawfish. Depression-era soup kitchens were common in large cities, but you don't have to limit your 1930s dinner party menu to thin broth and fried potatoes. Many areas around the country were lucky enough to be surrounded by family farms where reasonably priced ingredients were relatively abundant for sale or barter.
What we're talking about here is electrotactile stimulation for sensory augmentation or substitution, an area of study that involves using encoded electric current to represent sensory information -- information that a person cannot receive through the traditional channel -- and applying that current to the skin, which sends the information to the brain. The brain then learns to interpret that sensory information as if it were being sent through the traditional channel for such data. In the 1960s and '70s, this process was the subject of ground-breaking research in sensory substitution at the Smith-Kettlewell Institute led by Paul Bach-y-Rita, MD, Professor of Orthopedics and Rehabilitation and Biomedical Engineering at the University of Wisconsin, Madison. Now it's the basis for Wicab's BrainPort technology (Dr. Bach-y-Rita is also Chief Scientist and Chairman of the Board of Wicab). Eyeglasses are a typical example of sensory augmentation. Braille is a typical example of sensory substitution -- in this case, you're using one sense, touch, to take in information normally intended for another sense, vision.|Dancing video retargeting aims to synthesize a video that transfers the dance movements from a source video to a target person. Previous work need collect a several-minute-long video of a target person with thousands of frames to train a personalized model. However, the trained model can only generate videos of the same person. To address the limitations, recent work tackled few-shot dancing video retargeting, which learns to synthesize videos of unseen persons by leveraging a few frames of them. In practice, given a few frames of a person, these work simply regarded them as a batch of individual images without temporal correlations, thus generating temporally incoherent dancing videos of low visual quality. In this work, we model a few frames of a person as a series of dancing moves, where each move contains two consecutive frames, to extract the appearance patterns and the temporal dynamics of this person. We propose MetaDance, which utilizes temporal-aware meta-learning to optimize the initialization of a model through the synthesis of dancing moves, such that the meta-trained model can be efficiently tuned towards enhanced visual quality and strengthened temporal stability for unseen persons with a few frames.
In a nutshell, a DVR is a glorified hard drive inside a fancy box that looks nice in your entertainment center. The hard drive is connected to the outside world through a variety of jacks on the back of the box, usually the typical RCA connections that you would use to hook up, say, a cable box or a VCR. The television signal comes into the DVR's built-in tuner through antenna, cable or satellite. If the signal comes from antenna or cable, it goes into an MPEG-2 encoder, which converts the data from analog to digital (MPEG-2, by the way, is the compression standard used to fit information onto a DVD). From the encoder, the signal is shipped off to two different places: first, to the hard drive for storage, and second, to an MPEG-2 decoder, which converts the signal back to analog and sends it to the television for viewing. On a few systems, you can even record two programs while watching a third pre-recorded show.
So, you can think of these export controls as trade restrictions in the service of broader U.S. We use them to prohibit the export of products from the U.S. Russia and, potentially, certain foreign-made products that fall under U.S. And given - the reason they work is: If you step back and look at the global dominance of U.S.-origin software, technology, and tooling, the export control options we’re considering alongside our allies and partners would hit Putin’s strategic ambitions to industrialize his economy quite hard. And it would impair areas that are of importance to him, whether it’s in artificial intelligence or quantum computing, or defense, or aerospace, or other key sectors. Now, that’s not an exhaustive list that I just mentioned. All options are very much on the table, and we’re united with Allies and partners to decisively impose severe consequences on Russia if it further invades Ukraine. And as we’ve said, while our actions and the EU’s actions may not be identical, we are unified in our intention to impose massive consequences that would deliver a severe and immediate blow to Russia and over time make its economy even more brittle and undercut Putin’s aspirations to exert influence on the world stage.
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Russia-Ukraine live updates Kremlin troops’ shift away from Kyiv is not a de-escalation, U.S. warns
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