Determination of the scattering length for Rb-Cs X1Σ+^{1}\Sigma ^{+} ground electronic state using a variational method

We performed the calculation of the scattering length for the elastic collision between the rubidium and cesium atoms. For this we applied a variational procedure based on the R-matrix theory for unbound states employing the finite element method (FEM) for expansion of the wave-function in terms of a finite set of local basis functions. The FEM presents as advantages the possibility of the development of a efficient matrix inversion algorithm which significantly reduces the computation time to calculate the R matrix. We also tested a potential energy curve with spectroscopic accuracy obtained before from a direct adjustment procedure of experimental data of the $X^{1}\Sigma^{+}$ state based on genetic algorithm. The quality of our result was evaluated by comparing them with several ones previously published at literature.Comment: 15 pages, 6 tables and 2 figure

Students’ Perception to Online Distance Learning (ODL) and Socio-Emotional Skills During Covid-19 Pandemic

This study assessed the perception of online distance learning and the socio-emotional learning skills of grade 11 chemistry students in the Philippines during the Covid-19 pandemic. The Socio-emotional Skills Domains of Science Students Questionnaire (SSD-SSQ) is administered at the end of the school year. The study revealed high average socio-emotional skills in all the socioemotional learning domains (TaskPerformance, Emotion Regulation, Collaboration, Openness, Extraversion, and Compound Skills). Thematic Analysis is utilized in the research to determine the perceptions of the students. Responses of the students in their E-Portfolio were collected and analyzed. The study generated the following themes: opportunities to express, awareness and management of emotions, variation of activities, and interaction and support system. This study revealed the importance of socio-emotional learning in developing resiliency