2022/05/08، 06:38 PM
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.|Temporal sentence grounding in videos (TSGV), a.k.a., natural language video localization (NLVL) or video moment retrieval (VMR), aims to retrieve a temporal moment that semantically corresponds to a language query from an untrimmed video. Connecting computer vision and natural language, TSGV has drawn significant attention from researchers in both communities. This survey attempts to provide a summary of fundamental concepts in TSGV and current research status, as well as future research directions. As the background, we present a common structure of functional components in TSGV, in a tutorial style: from feature extraction from raw video and language query, to answer prediction of the target moment. Then we review the techniques for multimodal understanding and interaction, which is the key focus of TSGV for effective alignment between the two modalities. We construct a taxonomy of TSGV techniques and elaborate methods in different categories with their strengths and weaknesses. Lastly, we discuss issues with the current TSGV research and share our insights about promising research directions. Absinthe is now perfectly legal in every country in which alcohol is legal. In 2007, the United States lifted its 100-year-long ban. Absinthe was banned in the United States. Most of Europe by 1915. It was thought to bring out the worst in those who consumed it, having both stimulant and psychoactive effects. The reason for this was thujone, a chemical compound also found in wormwood. Is absinthe legal in the U.S.? Yes, it is legal because it now contains regulated trace amounts of thujone, which is a toxic chemical. Can I drink absinthe straight? This is not recommended due to its high alcohol content and overpowering flavor. Absinthe is typically diluted by being poured over a sugar cube with cold water. You should ideally have between four. Six parts water for one part absinthe or risk burning your taste buds. What are some myths regarding absinthe? The most common myth was that absinthe caused hallucinations and psychosis, along with an array of other psychotropic effects such as mania. McGee, Harold. "Trying to Clear Absinthe's Reputation." The New York Times. Sayre, Caroline. "Absinthe is Back." Time magazine. Swingonski, Frank. "Why Was Absinthe Banned for 100 Years? A Mystery As Murky as the Liquor Itself." Mic.|In the last decade, online social media has become the primary platform for protesters to organize and express their agenda in various parts of the world. Nevertheless, scholars still debate whether online tools induce offline protests or facilitate them (?; ?). Unfortunately, studies of protests often lack panel data and cannot address how particular users change their behaviour over time in line with the protest agenda. To this end, we analyze a new dataset of the Facebook page EuroMaydan that was explicitly created to facilitate the protest in Ukraine from November 2013 to February 2014. Moreover, our analysis follows this page even after the end of the protest till June 2014. This page had more than 300,000 subscribers at the time when the data was collected. On average, this page generated hundreds of posts and thousands of comments per day, reaching up to 37,307 comments in one day. In total, the dataset includes 26,631 posts and 1,470,593 comments that were generated by 124,790 users during and after the protests. election
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