Engineering analysis is a systematic process used to evaluate and solve problems in engineering contexts. It involves applying mathematical and scientific principles to understand the behavior of systems, materials, and processes, helping engineers to design, optimize, and improve products and systems. Key components of engineering analysis include: 1. **Problem Definition**: Clearly identifying the problem to be solved or the question to be answered. 2. **Modeling**: Creating mathematical or computational models that represent the physical system or process.
Hydrogen pinch refers to a situation in the hydrogen economy or hydrogen supply chain where there is a significant imbalance between hydrogen supply and demand. This can occur when demand for hydrogen exceeds the available supply, leading to increased prices and potential shortages. The concept of a "pinch" is commonly used in resource and energy economics to describe constraints on supply that can impact pricing and availability.
Psychopolitical validity is a concept that merges psychological insights with political theory to evaluate how personal experiences and identities intersect with broader political contexts. It emphasizes understanding how individual psychological factors—such as emotions, motivations, and beliefs—inform and are informed by political beliefs and actions. The term reflects a recognition of the interplay between the psyche and political systems, suggesting that personal experiences of oppression, identity formation, and social interactions can shape political attitudes and behaviors.
In philosophy, the term "state of affairs" refers to the way the world is at a particular time, often in relation to the existence or non-existence of certain facts, conditions, or situations. The concept is primarily associated with the fields of metaphysics and philosophy of language. A state of affairs comprises a specific arrangement of objects and their properties, as well as the relationships that hold between them.
Spin structure is a concept from topology and theoretical physics that arises in the context of manifold theory, particularly in relation to spin manifolds. In mathematics, a spin structure is typically defined on a manifold that enables the definition of spinors, which are mathematical objects that generalize the notion of complex numbers and vectors.
The point of these is that they are good for transfection apparently.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact