To first-time learners of the English language, what could easily be its most baffling aspect is its use of the so-called causatives. English uses this strange grammatical structure to denote ...

Abstract: This paper studies the switching laws designed to maintain the stability of delayed switched nonlinear systems with both stable and unstable modes. The addressed time delays include finite ...

Abstract: The first half of this manuscript deals with a review of different variants for second-order balanced truncation techniques for stable second-order form systems. Later, multiple nonexisting ...

Learn the most common English phrasal verbs to improve your fluency! Examples include 'wake up,' 'sleep in,' 'go off,' and more. Perfect for daily life conversations.

One of the most difficult parts in writing a résumé is composing the descriptions of your jobs, volunteer work, projects, and other relevant experiences. Each description of your work history and ...

Learning German and unsure when to use ‘haben’ or ‘sein’? Here’s the quick pattern that helps you pick the right helper verb most of the time. Please sign ...

NEW Karate Cats Maths - Halloween update! The Karate Cats are having a spooky glow-up! Take on the frightful fractions, scary subtractions and more to become a monster maths champion.

If you’ve started speaking in the past tense in German, you’ve likely run into a confusing question: why is it ich habe gearbeitet (I have worked) but ich bin gegangen (I have gone)? Both describe ...