Abstract: Nonlinear Negative Imaginary (NI) systems arise in various engineering applications, such as controlling flexible structures and air vehicles. However, unlike linear NI systems, their theory ...

This year’s-end grab bag of revisits and newly found Quirk might give new meaning to “phoning it in.” Plenty of cool indoor items deserve a look this week, starting with an elephant. There’s more ...

Fleets are risking General Data Protection Regulation (GDPR) fines by using employee’s National Insurance (NI) numbers for driving licence checking, FleetCheck said this week. The practice could lead ...

The Netherlands registered 474 hours with negative electricity prices over the first eight months of 2025, according to figures from Dutch consultancy Stratergy. The figure surpasses the number of ...

We bought our first home last month. Now what?... January: Set up a quarterly visit with your pest control company. Have them start putting down the ground work for a pest-free year. Make sure your ...

In this paper, we investigate negative eigenvalues of exactly solvable quantum models, particularly one-dimensional Hamiltonians with δ′-like potentials used to represent localized dipoles. These ...

When presenting expressions, we saw examples of common arithmetic operations: addition, subtraction, multiplication, and division. Here we will present two additional operations which are closely ...

In stark contrast to mathematics, other programming languages and Microsoft's documentation (which does not state anything about this peculiarity *), the modulus operator generates negative results.

President Donald Trump's approval rating has turned negative for the first time in a poll conducted by a Republican-leaning firm. A shift in Trump's numbers could influence support from Republican ...