Switzerland is watch heartland, but it was a German company three decades ago that shook the industry as few brands have ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Michael Boyle is an experienced financial professional with more than 10 years working with financial planning, ...

Pete Rathburn is a copy editor and fact-checker with expertise in economics and personal finance and over twenty years of experience in the classroom. Rent stabilization is a form of control over ...

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Abstract: This paper proposes an improved sliding mode control (SMC) method using a hyperbolic function for battery charger of personal mobility devices (PMDs). In general, various control methods can ...