244 karma · joined February 17, 2015
LM designs were abandoned prior to this accident due to availability and maintainability issues.
The USN has, to a material degree, perfected the compact PWR.
Their experience in fuel design, materials, cooling, support systems, control systems, and processes pose an enormous barrier to new systems other than those that could truly radically simplify the reactor system and yield a huge gain in reduced manpower and increased reliability.
I think the best marginal gains are coming and will come from developments in tactical and ISR systems.
Once the owner accepts that bid, the liquidity in the market has been completely taken, and the likely future market value reverts to ~100,000.
The skill I look for over all others is an understanding of the standard principles of software design, and principles of testing is a bonus. I want to see that the candidate is honestly interested in our language to the extent that they are familiar with the obvious pitfalls of the standard language features. Candidates who prepared by writing option pricers and passing leetcode challenges won't necessarily understand any of these, because they are simply writing functions.
I assume that anyone who got through a rigorous engineering undergrad has the mathematical preparation to perform as a quantitative developer. This won't be true for all roles, but it's true for all of the QD roles that I have contact with at BB.
If you are interested in a dev role in finance, and see requirements for basic financial knowledge, risk, etc. -- as long as the requirement isn't quite specific, such as experience pricing specific option types, pricing complex products, or with a specific product, I would just ignore it and apply. Many of these concepts are quite simple compared to what SEs are trained to model and implement, and the people on the team who need help know that.
I've seen GPU and C++ skills requested for a Pandas shop. Just apply.
I think hiring managers and HR think they will attract better candidates by adding these things, but it is counterproductive.
From what I can tell from salary surveys, we pay an entry-level dev better than many others. >150 guaranteed all-in first year, and better than that afterwards if you just do your job. Promotion path is good because modern skills are in dire need.
The radiation field of a freshly removed power reactor fuel element is so strong that you couldn’t run past it fast enough to survive the dose.
Doesn’t implementing this system with HDF5 cause headaches for concurrency in either direction?
I think this has been the case with NATO, Israel, Saudi Arabia, Korea, Taiwan, and Pakistan.
On the balance, this obviously doesn’t make the overall strategy sound in the long-run, but the nuclear enterprise has been myopic from the beginning.
Nuclear weapons states and their force commanders are well aware of this capability. It’s been publicly advertised for decades for deterrence.
Optimizing deployment in the manner you describe is not aligned to the current mission of these forces / our deterrence relationship.
Most of these isotopes exist on distinct decay chains. An unstable nuclear state may decay in more than one mode, each with a distinct time constant. Many of these decays occur as groups of decay chains that occur on extremely short time-scales, and may temporarily remain in metastable states (isomers).
So this general rule results from the superposition of many thousands of reactions, that proceed stochastically with distinct time constants and energy released.
There is a mathematical rule relating the time constants and energies of these reactions, but it is not simple: https://en.wikipedia.org/wiki/Fermi%27s_golden_rule
The Russians and Chinese can't even deploy a reliable survivable force. Their boomers are either rusting or poorly tested and their forces underfunded.
They can't even regularly deploy attack submarines to the Atlantic Ocean -- how are they going to simultaneously fix, track, and neutralize the US boomer force?
Your entire train of thought on US/RF/PRC deterrence relationships is fantastical.