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Personal computer

About: Personal computer is a research topic. Over the lifetime, 58809 publications have been published within this topic receiving 800814 citations. The topic is also known as: PC.


Papers
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Book
01 Jun 1998
TL;DR: Space Vehicle Dynamics and Control, Second Edition as discussed by the authors provides a solid foundation in dynamic modeling, analysis, and control of space vehicles featuring detailed sections covering the fundamentals of controlling orbital, attitude, and structural motions.
Abstract: "Space Vehicle Dynamics and Control, Second Edition" continues to provide a solid foundation in dynamic modeling, analysis, and control of space vehicles featuring detailed sections covering the fundamentals of controlling orbital, attitude, and structural motions of space vehicles. A new Part 5 is a collection of advanced spacecraft control problems and their practical solutions obtained by applying the fundamental principles and techniques emphasized throughout the book.The textbook highlights a range of orbital maneuvering and control problems: orbital transfer, rendezvous, and halo orbit determination and control. Rotational maneuvering and attitude control problems of space vehicles under the influence of reaction jet firings, internal energy dissipation, or momentum transfer via reaction wheels and control moment gyros are treated in detail. It also covers the analysis and design of attitude control systems in the presence of structural flexibility and/or propellant sloshing. New topics include control moment gyros for agile imaging satellites, solar sail dynamics and control, solar sail missions for asteroid deflection, and attitude and orbit control of a large geostationary solar power satellite.This text requires a thorough knowledge of vector and matrix algebra, calculus, ordinary differential equations, engineering mechanics, and linear system dynamics and control. The first two chapters provide a summary of such necessary background material. Since some problems may require the use of software for the analysis, control design, and numerical simulation, readers should have access to computational software (i.e., MATLAB[registered]) on a personal computer. MATLAB is a registered trademark of The MathWorks, Inc.

1,030 citations

Journal ArticleDOI
TL;DR: The distinct element method has advanced to a stage where the complex mechanical interactions of a discontinuous system can be modelled in three dimensions and an efficient data structure is utilizes which permits the rapid calculation on a personal computer of systems involving several hundred particles.

1,020 citations

Journal ArticleDOI
31 Aug 2000-Nature
TL;DR: The physical limits of computation as determined by the speed of light c, the quantum scale ℏ and the gravitational constant G are explored.
Abstract: Computers are physical systems: the laws of physics dictate what they can and cannot do. In particular, the speed with which a physical device can process information is limited by its energy and the amount of information that it can process is limited by the number of degrees of freedom it possesses. Here I explore the physical limits of computation as determined by the speed of light c, the quantum scale h and the gravitational constant G. As an example, I put quantitative bounds to the computational power of an 'ultimate laptop' with a mass of one kilogram confined to a volume of one litre.

1,020 citations

Book
01 Jan 1983
TL;DR: This book provides a broad introduction to basic analog and digital principles and their application to the design and analysis of real- world communication systems and provides readers with a working knowledge of how to use both classical mathematical and personal computer methods to analyze, design, and simulate modern communication systems.
Abstract: From the Publisher: Exceptionally up-to-date, this book provides a broad introduction to basic analog and digital principles and their application to the design and analysis of real- world communication systems. It provides readers with a working knowledge of how to use both classical mathematical and personal computer methods to analyze, design, and simulate modern communication systems. MATLAB is integrated throughout. Study-aid examples and homework problems are included, many of which require solution via a personal computer. MATLAB illustrative examples and plots are included. Balanced coverage of both analog and digital communication systems with an emphasis on the design of digital communication systems. Case studies of modern communication systems are provided. Over 500 problems provided. For electrical engineers.

1,014 citations

Patent
31 Aug 1998
TL;DR: An Integrated Routing/Mapping Information System (IRMIS) as discussed by the authors links desktop personal computer cartographic applications to one or more handheld organizer, personal digital assistant (PDA) or “palmtop” devices.
Abstract: An Integrated Routing/Mapping Information System (IRMIS) links desktop personal computer cartographic applications to one or more handheld organizer, personal digital assistant (PDA) or “palmtop” devices. Such devices may be optionally equipped with, or connected to, portable Global Positioning System (GPS) or equivalent position sensing device. Desktop application facilitates user selection of areas, starts, stops, destinations, maps and/or point and/or route information. It optionally includes supplemental online information, preferably for transfer to the PDA or equivalent device. Users' options include route information, area, and route maps. Maps and related route information are configured with differential detail and levels of magnitude. Used in the field, in conjunction with GPS receiver, the PDA device is configured to display directions, text and map formats, the user's current position, heading, speed, elevation, and so forth. Audible signals identifying the next turn along the user's planned route are also provided. The user can pan across maps and zoom between two or more map scales, levels of detail, or magnitudes. The IRMIS also provides for “automatic zooming,” e.g., to show greater detail or closer detail as the user approaches a destination, or to larger scale and lower resolution to show the user's overall planned route between points of interest. The IRMIS also enables the user to mark or record specific locations and/or log actual travel routes, using GPS position information. These annotated location marks and/or “breadcrumb” or GPS log data can be saved, uploaded, displayed, or otherwise processed on the user's desktop geographic information or cartographic system. The IRMIS application and data may be distributed online and/or in tangible media in limited and advanced manipulation formats.

1,014 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202310
202227
2021418
2020954
20191,407
20181,342