You can watch the following animation to learn more about the basics of sound. Click the arrow to move on to the next slide. Acoustic levitation uses sound traveling through a fluid -- usually a gas -- to balance the force of gravity. On Earth, this can cause objects and materials to hover unsupported in the air. In space, it can hold objects steady so they don't move or drift. The process relies on of the properties of sound waves, especially intense sound waves. We'll look at how sound waves become capable of lifting objects in the next section. A basic acoustic levitator has two main parts -- a transducer, which is a vibrating surface that makes sound, and a reflector. Often, the transducer and reflector have concave surfaces to help focus the sound. A sound wave travels away from the transducer. Bounces off the reflector. Three basic properties of this traveling, reflecting wave help it to suspend objects in midair.|Benefit-Cost Analysis (BCA) is a method that determines the future risk reduction benefits of a hazard mitigation project and compares those benefits to its costs. The result is a Benefit-Cost Ratio (BCR). A project is considered cost-effective when the BCR is 1.0 or greater. Applicants and subapplicants must use FEMA-approved methodologies and tools-such as the BCA Toolkit-to demonstrate the cost-effectiveness of their projects. FEMA has established a pre-calculated benefit for the acquisition of a Repetitive Loss (RL) or Severe Repetitive Loss (SRL) property, as defined by either the National Flood Insurance Program (NFIP) or Flood Mitigation Assistance (FMA) program. The pre-calculated benefit amount is $323,000, equal to the pre-calculated benefit amount for acquisitions within the Special Flood Hazard Area (SFHA). For more information, see the memorandum. FEMA has established a pre-calculated benefit for certain hospital generator projects. The pre-calculated benefits for a hospital generator project are $6.95 per hospital building gross square footage (BGSF) in urban areas, including most suburban areas, and $12.62 per hospital BGSF in rural areas. How do you know that sharks will appear? Again, the shark diving company will have you covered by trailing chum from the boat as you reach your anchor spot. Chum is a mixture of fish blood, oils and parts. It creates a bloody soup that smells delicious to all discerning sharks in the nearby area. Sharks, with their extremely keen sense of smell, will follow the chum trail to the boat. Once there, they will find bait that will hold their attention long enough for you to enjoy them. In most parts of the world, it's illegal to actually feed the sharks, so the bait is typically frozen fish encased in a box held off the back of the boat. Once the sharks have arrived, the diver is free to watch them circle the boat from the safety of the cage. A typical dive will last about 20 to 30 minutes and give the diver plenty of chances to take pictures and marvel at the mighty creatures.|IT outsourcing is becoming increasingly popular. Bringing fundamental changes to businesses around the world. According to Gartner's report, global IT spending, which expects to reach $3.8 trillion in 2019, will continue to grow. Outsourcing is shaping the global market, changing how companies think about development, and offering unimagined opportunities. Here are ten trends in software development outsourcing in the unprecedented era of 2021, so get ready for all the hype to benefit your business. Trends in software development outsourcing. 1 The rise of narrowly focused software companies. Opinions may divide, but some people prefer to work with outsourcing companies. Others say they enjoy the benefits of multi-vendor services. But the fact is that more and more companies need a company specializing in a narrow range of services. One of the reasons for this trend is the rapid changes in technology. It is impossible to have an in-house team with all the necessary skills to keep up with the new technological innovations emerging every day.
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