Riemann Zeta Function
The zeta function, which is commonly known as the Riemann zeta function, is defined as follows. \[\zeta (s) = \sum_{n = 1}^{\infty} \frac{1}{n^s}\] The zeta function’s Dirichlet series will converge...
Revisiting Alkali Metals
This is a note on alkali metals. I actually haven’t visited chemistry much since graduating high school back in 2009, but recently when I look for science experiment demonstration videos...
Gamma Distribution, Poisson Process, and Gamma Function
Gamma distribution is used to model the waiting time of a Poisson process, similar to exponential distribution. According to this article by Aerin Kim, the difference is that the exponential...
Hazard Function in Survival Analysis
I’m using this video as my introductory lesson to the hazard function. The hazard function can be defined as follows. \[h(t) = \frac{f(t)}{S(t)}\] Given that \(S(t)\) is the survival function...
Lattice and Lattice-Based Access Control
I happened to stumble upon this article by Ravi S. Sandhu from George Mason University. The article was stored in a server run by the Electrical Engineering and Computer Science...