Abstract: The current fundamental limits such as Shockley–Queisser, ergodic light-trapping limit, diffraction-limited imaging (Abbe diffraction limit), noise in detection, reciprocal optical systems ...

Abstract: This note studies the stability problem of nonlinear positive differential-difference equations with unbounded time-varying delays. Under assumptions on the nonlinear vector fields, such as ...

Triggers are actions or situations that elicit an emotional response. While they are typically associated with negative responses, a person can also have positive triggers. A person can experience ...

ABSTRACT: The article synthesizes and presents the results regarding the stability of positive homogeneous systems that have been researched and published in recent years. Next, we provide a ...

ABSTRACT: The article synthesizes and presents the results regarding the stability of positive homogeneous systems that have been researched and published in recent years. Next, we provide a ...

Since the financial crisis of 2007–2009, there has been a renewed interest in quantifying more appropriately the risks involved in financial positions. Popular risk measures such as variance and value ...

We investigate the future asymptotics of spatially homogeneous space-times with a positive cosmological constant by using and further developing geometric conformal methods in General Relativity. For ...

1 Department of Psychology, Zhejiang Sci-Tech University, Zhejiang, China 2 Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China Previous ...

Whether you find yourself in the C-suite or on the factory floor, positive thinking at work is a very powerful skill. Not only does a positive attitude help you overcome adversity, but it also ...