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3 天前 · e. In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch is believed to have lasted from 10 −36 seconds to between 10 −33 and 10 −32 seconds after the Big Bang. Following the inflationary period, the universe continued ...
2024年5月2日 · Laplace transform. In mathematics, the Laplace transform, named after its discoverer Pierre-Simon Laplace ( / ləˈplɑːs / ), is an integral transform that converts a function of a real variable (usually , in the time domain) to a function of a complex variable (in the complex-valued frequency domain, also known as s-domain, or s-plane ).
2 天前 · Myocardial infarction Other names Acute myocardial infarction (AMI), heart attack A myocardial infarction occurs when an atherosclerotic plaque slowly builds up in the inner lining of a coronary artery and then suddenly ruptures, causing catastrophic thrombus formation, totally occluding the artery and preventing blood flow downstream to the heart muscle.
2 天前 · Quantum System One, a quantum computer by IBM from 2019 with 20 superconducting qubits A quantum computer is a computer that takes advantage of quantum mechanical phenomena. On small scales, physical matter exhibits properties of both particles and waves, and quantum computing leverages this behavior, specifically quantum superposition and entanglement, using specialized hardware that supports ...
2024年5月4日 · Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing. The data is linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
4 天前 · History Heckler & Koch, encouraged by the success of the G3 battle rifle, developed a family of small arms consisting of four types of firearms all based on a common G3 design layout and operating principle. The first type was chambered for 7.62×51mm NATO, the second for the 7.62×39mm M43, the third for 5.56×45mm NATO, and the fourth for the 9×19mm Parabellum.
2024年5月3日 · Nestlé S.A.[a] (/ˈnɛsleɪ, -li, -əl/ NESS-lay, -lee, -əl,[5] French: [nɛsle], German: [ˈnɛstlə] ⓘ) is a Swiss multinational food and drink processing conglomerate corporation headquartered in Vevey, Switzerland. It has been the largest publicly held food company in the world, measured by revenue and other metrics, since 2014 ...
