Keith Diefendorff is not a widely recognized public figure as of my last available data in October 2023. It’s possible that he could be a private individual or a professional in a specific field not covered extensively in popular media.

Laser rapid manufacturing refers to a range of manufacturing processes that utilize laser technology to quickly produce components and products, often on a small scale or as prototypes. This approach can encompass various techniques, including: 1. **Laser Sintering (LS)**: A process that uses a laser to sinter powdered material, typically plastic or metal, to create a solid structure. It is commonly used in 3D printing to produce complex shapes that would be difficult or impossible to achieve with traditional manufacturing.

Quad-edge is a data structure used primarily for representing and manipulating surfaces in computational geometry, particularly in the context of mesh representations and graph theory. It was introduced by Guibas and Stolfi in the context of dynamic planar subdivisions. ### Key Features of Quad-edge Structure: 1. **Surface Representation**: It is particularly suited for representing planar subdivisions and can efficiently handle operations like inserting and deleting edges.

The term "Pi algorithms" can refer to algorithms used to compute the digits of the mathematical constant pi (π), which represents the ratio of a circle's circumference to its diameter. Pi is a non-repeating, non-terminating decimal, and numerous algorithms can be employed to calculate its digits to a high degree of precision.

Turochamp is a chess program designed by Alan Turing in the 1950s, which is notable for being one of the earliest examples of a computer chess algorithm. Turing developed this program while working on the concepts of artificial intelligence, and Turochamp was intended to play a game of chess against human opponents.

Spatial network analysis software is a type of Geographic Information System (GIS) software designed to analyze spatial networks, such as transportation systems, utility networks, and social networks. Such software provides tools for modeling, visualizing, and analyzing complex relationships and flows within a spatial context. Key functions and features of spatial network analysis software include: 1. **Network Modeling**: Users can create and manage spatial networks, representing nodes (e.g., intersections, facilities) and edges (e.g.

Analytica is a decision-making software tool designed for analyzing complex systems and making informed decisions. Developed by Lumina Decision Systems, it employs a visual modeling approach that allows users to create models using a graphical interface. This makes it particularly useful for users who may not have extensive programming or quantitative skills. Key features of Analytica include: 1. **Influence Diagrams**: Users can create influence diagrams to represent variables and their relationships visually, simplifying the understanding of complex systems.

Fermat is a computer algebra system (CAS) designed for symbolic mathematical computation. It allows users to perform a wide range of mathematical operations, including algebraic manipulations, calculus, and other advanced mathematical functions. The system is particularly known for its capabilities in symbolic computing, which involves manipulating mathematical expressions in a way that is more abstract than numerical calculations. Fermat can handle tasks such as simplifying expressions, solving equations, performing integration and differentiation, and working with matrices, among others.

SMath Studio is a software application designed for mathematical computation, modeling, and simulation. It offers features for symbolic calculation, numerical analysis, and graphical representation of mathematical expressions. The platform allows users to create and manipulate mathematical problems and equations interactively, providing tools for both basic arithmetic and advanced mathematical functions. Key features of SMath Studio include: 1. **Symbolic and Numerical Calculations**: Users can perform both types of calculations, allowing for greater flexibility in solving mathematical problems.

Schoonschip is a floating community located in Amsterdam, Netherlands. It is known for its innovative approach to sustainable living and urban development. The community consists of a series of houseboats and floating homes that are designed to be environmentally friendly, using renewable energy sources and sustainable building materials. Schoonschip aims to demonstrate how urban living can be more in harmony with nature and focus on community-oriented living. The design features include green roofs, water management systems, and energy-efficient technologies.

A computer algebra system (CAS) is a software program that facilitates symbolic mathematics. These systems can manipulate mathematical expressions in symbolic form, allowing for tasks such as algebraic simplification, differentiation, integration, equation solving, and more. Here is a list of some well-known computer algebra systems: 1. **Mathematica** - A commercial system developed by Wolfram Research, known for its powerful capabilities and extensive libraries.

MuPAD is a computer algebra system that was developed for symbolic computation tasks, including algebra, calculus, and other mathematical operations. It enables users to perform symbolic manipulation of mathematical expressions, solve equations, compute integrals and derivatives, and handle various mathematical functions. MuPAD was originally a standalone software package, but it has been integrated into various software products, notably MATLAB, where it is used in the Symbolic Math Toolbox.

Internet chess servers are online platforms that enable players to play chess games against other players from around the world or against computer opponents. These servers provide various features, including real-time gameplay, game analysis, and educational tools. Here are some key aspects of internet chess servers: 1. **Gameplay**: Players can join or create games, participate in rated matches, and play against people of various skill levels. Many servers also support different time controls, such as blitz, bullet, or classical formats.

Several computer companies were disestablished in 1953, especially during the early years of the computer revolution when the industry was still evolving.

Addition-chain exponentiation is an efficient algorithm used for computing large powers of a number, particularly in the context of modular arithmetic, common in fields such as cryptography. The main idea behind addition-chain exponentiation is to represent the exponent as a sum of earlier results obtained from multiplying the base by itself and applying the operations of addition and multiplication in a structured way.

In 1966, several computer companies were disestablished, primarily due to the rapidly changing tech landscape, market dynamics, and mergers. One notable example is **Computer Automation, Inc. (CAI)**, which was involved in the development of early computing systems but ultimately ceased operations in that year. Additionally, some companies were absorbed or went out of business due to the competitive pressures of the emerging computer industry. However, detailed documentation on all disestablished companies can sometimes be sparse.

Several computer companies were disestablished or ceased operations in 1968. One notable example is **Tandem Computers**, which was known for its fault-tolerant computer systems.

In 1955, several computer-related companies were disestablished, including: 1. **The UNIVAC Division of Remington Rand** - While Remington Rand itself continued as a company, the UNIVAC Division was significant in the early history of computing. The disestablishment often refers to the transition of the division to a different structure or ownership.

Rahmat Shoureshi is a notable figure in the field of education, particularly recognized for his work in higher education and engineering. He has served as an academic administrator and has held leadership positions at various universities. Shoureshi is noted for his emphasis on innovation in educational practices and his contributions to research and development in engineering disciplines.

In 1970, several computer companies were disestablished or went out of business as the technology landscape rapidly evolved. Some notable examples include: 1. **Data General Corporation** - Founded in 1968, Data General was known for its early minicomputers. While it was not completely disestablished until later, it faced significant challenges and declined in the early 1970s due to competition from larger companies like IBM.