Optical parametric oscillators simultaneously generate two beams of coherent light that are widely tunable in wavelength. This flexibility makes them a popular tool in various areas of scientific ...

Mitchell Grant is a self-taught investor with over 5 years of experience as a financial trader. He is a financial content strategist and creative content editor. Timothy Li is a consultant, accountant ...

Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. David Kindness is a Certified Public Accountant (CPA) and an expert ...

Abstract: Convolutional dictionary learning (CDL) can represent signals and images via the superposition of components given by the convolution of sparse coefficients (features) and the elements of a ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

Abstract: This paper addresses the problem of optimally controlling nonlinear systems with norm-bounded disturbances and parametric uncertainties while robustly satisfying con-straints. The proposed ...

Talking to yourself is very common and can be good for you. If your self-talk is positive, it can help you feel better and reach your goals. Be careful with negative self-talk, as it can make you feel ...