3DA can refer to multiple things, depending on the context in which it is used. Here are a few possibilities: 1. **3D Animation:** In some contexts, 3DA may refer to 3D Animation, which involves creating moving images in a three-dimensional space using computer graphics software. 2. **3D Audio:** 3DA might also refer to 3D Audio techniques that create an immersive sound experience, allowing users to perceive sound as coming from different directions and distances.

A rotary valve is a type of valve that controls the flow of fluids or gases in a system by utilizing a rotating mechanism. These valves are commonly used in various applications, including engines, HVAC systems, and industrial processes. ### Key Features of Rotary Valves: 1. **Design**: Rotary valves typically consist of a cylindrical body with an internal mechanism that can rotate to open or close the flow path. The most common types of rotary valves include ball valves, butterfly valves, and plug valves.

A pseudovector, also known as an axial vector, is a type of vector in physics and mathematics that behaves differently under certain transformations compared to regular (true) vectors. Specifically, pseudovectors are associated with quantities that have an inherent sense of direction and magnitude but behave differently under parity transformations (reflections). ### Key Characteristics of Pseudovectors: 1. **Transformation Under Parity**: - True vectors (e.g.

The Zwanzig projection operator is a mathematical tool used in the field of statistical mechanics and nonequilibrium thermodynamics to derive reduced descriptions of many-body systems. Named after Robert Zwanzig, it is particularly useful for studying systems with a large number of degrees of freedom, allowing one to focus on the relevant variables while ignoring others. The basic idea behind the Zwanzig projection operator is to split the total phase space of a system into "relevant" and "irrelevant" parts.

Probabilistic models are mathematical frameworks used to represent and analyze uncertain systems or phenomena. Unlike deterministic models, which produce the same output given a specific input, probabilistic models incorporate randomness and allow for variability in outcomes. This is useful for capturing the inherent uncertainty in real-world situations. Key features of probabilistic models include: 1. **Random Variables**: These are variables whose values are determined by chance.

This is a good book. It is rather short, very direct, which is a good thing. At some points it is slightly too direct, but to a large extent it gets it right.

The main goal of the book is to basically to build the Standard Model Lagrangian from only initial symmetry considerations, notably the Poincaré group + internal symmetries.

The book doesn't really show how to extract numbers from that Lagrangian, but perhaps that can be pardoned, do one thing and do it well.

DokuWiki about physics, mostly/fully written by Jakob Schwichtenberg and therefore focusing on particle physics, although registration might be open to all.

As of my last knowledge update in October 2021, there isn't a specific organization universally recognized as the "Statistical Modelling Society." It's possible that such an organization has been established since then, or the term may refer to a group, society, or community focused on statistical modeling techniques and applications in various fields such as data science, statistics, and machine learning.

This seems like a cool dude. Besides a hardcore scientist, he also made many important contributions to the French education and research system.

A **factored language model** is an extension of traditional language models that allows for the incorporation of additional features or factors into the modeling of language. This approach is particularly useful in situations where there are multiple sources of variation that affect language use, such as different contexts, speaker attributes, or syntactic structures. In a standard language model, probabilities are assigned to sequences of words based on n-grams or other statistical techniques.

Richard Feynman's mentor at Princeton University, and notable contributor to his development of quantum electrodynamics.

Worked with Niels Bohr at one point.

Web of Stories interview (1996): www.youtube.com/playlist?list=PLVV0r6CmEsFzVlqiUh95Q881umWUPjQbB. He's a bit slow, you wonder if he's going to continute or not! One wonders if it is because of age, or he's always been like that.

Teletext Ltd. is a media company that was originally known for providing teletext services in the UK. Established in the 1970s, it was one of the pioneers in delivering information to television viewers through a system that allowed access to news, sports updates, weather, and other types of information via a dedicated teletext signal. The service was widely used before the rise of the internet and digital TV. Teletext Ltd.

This is the one Ciro Santilli envies the most, because he has such a great overlap with Ciro's interests, e.g.:

Extremely precocious, borderline child prodigy, he was reading Dirac at 13-14 from the library.

He started working at night and sleeping during the moring/early afternoon while he was at university.

He was the type of guy that was so good that he didn't really have to follow the university rules very much. He would get into trouble for not following some stupid requirement, but he was so good that they would just let him get away with it.

Besides quantum electrodynamics, Julian worked on radar at the Rad Lab during World War II, unlike most other top physicists who went to Los Alamos Laboratory to work on the atomic bomb, and he made important contributions there on calculating the best shape of the parts and so on.

He was known for being very formal mathematically and sometimes hard to understand, in stark contrast to Feynman which was much more lose and understandable, especially after Freeman Dyson translated him to the masses.

However, QED and the men who made it: Dyson, Feynman, Schwinger, and Tomonaga by Silvan Schweber (1994) does emphacise that he was actually also very practical in the sense that he always aimed to obtain definite numbers out of his calculations, and that was not only the case for the Lamb shift.