nixonaddiction

há 10 horasdiscuss

“wahhhh this is bad” ok sure but how. what will the downstream effects be. how can we model increased ocean temperatures and how they will affect weather patterns or whatever? gives me no info on the implications, let alone info on the implications with rigor.

nixonaddiction

há 20 horasdiscuss

yeah yeah nicotine bad. let me have this one vice. i used to pop 6mgs during exams and life was awesome. i <3 smokeless nicotine. have tried pouches, patches, lozenges, gum. the gum is my favorite. had a 12mg once that stuff burned my gums and i swore off higher mg pouches. i honestly dont get how people use them.

nixonaddiction

anteontemdiscuss

yea im doing my masters in dft research so ik abt this. depends what u want 2 simulate! chemists more do molecular dynamics type stuff and will use experimental data for fitting data etc. like uh what surface of a metal water will react with from thermodynamics or something. (that isnt my field lol i just know a lot of catalysis guys.)

truly ab initio methods involve figuring out electronic properties from scratch like ionization energy or bandstructure. the real issue is that we dont have exact relations for the exchange and correlation terms. we can know the kinetic energy and charge screening, but we dont know how the electrons are interacting with each other. generally the xc term is treated as a function of electron density or its gradient (see: lda, gga, meta-gga) but there are so many different ways to approximate that. different models are good for different applications also, like transition metals vs organics. and then theres the issue of basis sets (most people use gaussian basis sets that have been tuned over many years but theres also plane waves and finite element methods) which can also change results. and even once u have a decent approximation of density you can try perturbative methods (GW family, delta scf i count also) to try and improve the approximation. i am rambling and typing this on my phone. essentially yes, but often calculations are a little inaccurate. but more accuracy has a higher computational cost, which makes it hard to run larger simulations. tradeoffs of engineering. hope this was coherent.

nixonaddiction

anteontemdiscuss

i learned to code primarily from really old guys so i started on vim. i was forced to use vim because i was doing a lot of remote hpc work. now i like vim. use vim/tmux combo to improve my mouseless workflow. i just need a better way to look at all my files and pdfs without touching my mouse. i should try sublime as i cant have any real comparison between the two without having tried both. but i much prefer mouseless workflows.

nixonaddiction

há 5 mesesdiscuss

ive been using obsidian for about 4 years. my main obsidian is my diary. recaps of everything i did that day, and working through my thoughts. sometimes i draft emails in thre. i dont reread it unless i need to know what i was doing on a specific day 3 years ago. once a daily note is finished i do not touch it again. it is mainly there for historical purposes. i have a separate obsidian for work notes. code im working on, todolists, etc. i am constantly editing these documents as needed. that obsidian functions more like a file management system. i have folders for different code projects, with markdown files explaining what i am doing and what projects relate to other projects. i mainly slip up when i write something in the wrong document. but i can just copypaste it over. the system is still evolving though, i just entered grad school and my needs changed rapidly, and i am shifting my information management system to match that.

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