Program comprehension remains a major bottleneck for software maintenance. When a programmer must understand a large legacy program whose documentation is scarce, out-ofdate, or irrelevant, she must browse its source code to build an effective mental model of its structure and behavior. But source code is far from an ideal representation for this task. I propose a system, DR. JONES, to help a p...

In this paper, the daily adjusted closing price of SPY (SPDR S&P 500 ETF Trust) is predicted by using High-Low prices SPY, DIA Dow Jones Industrial Average Trust), and QQQ (Invesco NASDAQ-100 via KNN method during COVID-19 pandemic period. Results show that applying method, a simple, intuitive, explainable machine learning feasible effective in prediction corresponding trade decisions pande...

We improve the best known lower bounds on the distance between two points of a Morse cluster in R, with ρ ∈ [4.967, 15]. Our method is a generalization of the one applied to the Lennard-Jones potential in [2], and it also leads to improvements of lower bounds for the energy of a Morse cluster. Some of the numerical results have been announced in [1].

We study the new formulas of Th. Fiedler for the degree-3-Vassiliev invariants for knots in the 3-sphere and solid torus and present some results obtained by them. We show that a knot with Jones polynomial consisting of exactly two monomials must have at least 20 crossings.

Program comprehension remains a major bottleneck for software maintenance. When a programmer must understand a large legacy program whose documentation is scarce, out-ofdate, or irrelevant, she must browse its source code to build an effective mental model of its structure and behavior. But source code is far from an ideal representation for this task. I propose a system, DR. JONES, to help a p...

We used molecular dynamics computer simulations to test an approximate scaling principle that conjectures that two equilibrium atomic liquids have very similar dynamical properties if they have the same density and similar static pair correlation functions when the length scales of the two liquids are adjusted appropriately, even if they have different interatomic potentials and different tempe...