When it was time to implement the PAL locks in nuclear missile silos throughout the U.S., Secretary of Defense Robert McNamara personally supervised the process. This is a later model from the 1990s, updated with a laptop computer. JFK's National Security MemorandumĪ PAL launch control module. Unbelievably, for nearly 20 years, the PAL launch code for every nuclear missile silo in the U.S. Now, imagine if you were in charge of setting 8-digit password codes for launching nuclear missiles - what would you set them to? Well, if you were the United States Strategic Air Command (SAC) during the Cold War, you'd set them to 00000000. It's akin to leaving the key to your front door under the welcome mat, in the hope that nobody will look for it there. We also know this is a very bad idea, because these are some of the first things criminals will guess if they try to access your accounts. Most of us have also heard of people who circumvent this frustrating process by entering something like “password” or “1234” as their password. However, there's a good reason for this - highly complex passwords are hard to crack, and nearly impossible to simply guess. These passwords often involve long strings of capital letters, numbers, and even punctuation that can be hard to remember (and tricky to enter correctly on the first try). In order to keep all your sensitive information secure, you'll need to come up with strong passwords for all your online accounts. Installation instructions for the modern NJOY components can be found on their respective repository on GitHub.In today's high-tech world, passwords can be a troublesome nuisance. Instructions for obtaining, compiling, and testing NJOY can be found here. Both NJOY versions and any modern NJOY components are free to use, but the copyright and license must remain with the code. NJOY2016, NJOY21 and our modern NJOY components are freely available under the BSD 3-clause license. Future components will include resonance reconstruction and data interpretation and manipulation tools. Prototypes can even be developed in Python before considering their implementation in C++.Įxamples of these components that are now available to users are our ENDFtk and ACEtk format components. Once all necessary components are developed in this way, creating a modern equivalent of any legacy NJOY module will be relatively trivial to achieve (from a pure coding point of view, excluding the required V&V efforts). Providing both a C++ and Python interface at the same time will also help in deploying these tools more quickly. As such, by focusing on deploying these components sooner rather than later, we can more quickly respond to user demands.īy moving away from the module structure of legacy NJOY to a component-based toolkit for a modern NJOY, we can allow for faster deployment of tools and integration in other tools. As indicated above, some or all of these components can be useful to end users as well as the final monolithic modules. An example here would be to obtain the elements of the R-matrix or T-matrix during resonance reconstruction.ĭeveloping or redeveloping a module requires first developing the underlying components that do the work (which may include a component to handle file formats) before these components can be integrated into the final module. In addition, some of the intermediate results produced during processing are not available to a user. However, for some fringe applications and a lot of day-to-day work where nuclear data users have specific questions (e.g., what is the cross section value at this energy), the monolithic structure of NJOY does not allow a user to get to that answer quickly or efficiently. The monolithic structure of NJOY is most useful when processing full evaluations into application libraries. As a result, NJOY21 will continue to use NJOY2016 for the foreseeable future. While it was initially intended to modernise NJOY on a module-by-module basis within NJOY21, the modernisation of NJOY has now gone in the direction of a component-based modernisation.
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