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Author : Anonim
Publisher : Unknown
Page : 124 pages
File Size : 49,8 Mb
Release : 1998
Category : Electronic
ISBN : NWU:35556031264666
Author : Anonim
Publisher : Unknown
Page : 328 pages
File Size : 49,7 Mb
Release : 1996
Category : Electronic
ISBN : NWU:35556031261233
Author : Anonim
Publisher : Unknown
Page : 764 pages
File Size : 53,5 Mb
Release : 2014
Category : Boston Harbor (Mass.)
ISBN : MINN:31951D03894843V
Author : Anonim
Publisher : Unknown
Page : 844 pages
File Size : 47,9 Mb
Release : 1992
Category : Electronic
ISBN : NWU:35556031034762
Author : Anonim
Publisher : Unknown
Page : 344 pages
File Size : 50,8 Mb
Release : 1985
Category : Electronic
ISBN : NWU:35556031239338
Author : Anonim
Publisher : Unknown
Page : 162 pages
File Size : 47,5 Mb
Release : 1985
Category : Electronic
ISBN : NWU:35556031269590
Author : Alastair Reynolds
Publisher : N E S F A Press
Page : 0 pages
File Size : 43,7 Mb
Release : 2011-04
Category : Science fiction, English
ISBN : 1886778981
Author : Anonim
Publisher : Unknown
Page : 82 pages
File Size : 40,7 Mb
Release : 1982
Category : Electronic
ISBN : NWU:35556031007420
Author : James Kalbach
Publisher : "O'Reilly Media, Inc."
Page : 415 pages
File Size : 50,6 Mb
Release : 2007-08-28
Category : Computers
ISBN : 9780596553784
Thoroughly rewritten for today's web environment, this bestselling book offers a fresh look at a fundamental topic of web site development: navigation design. Amid all the changes to the Web in the past decade, and all the hype about Web 2.0 and various "rich" interactive technologies, the basic problems of creating a good web navigation system remain. Designing Web Navigation demonstrates that good navigation is not about technology-it's about the ways people find information, and how you guide them. Ideal for beginning to intermediate web designers, managers, other non-designers, and web development pros looking for another perspective, Designing Web Navigation offers basic design principles, development techniques and practical advice, with real-world examples and essential concepts seamlessly folded in. How does your web site serve your business objectives? How does it meet a user's needs? You'll learn that navigation design touches most other aspects of web site development. This book: Provides the foundations of web navigation and offers a framework for navigation design Paints a broad picture of web navigation and basic human information behavior Demonstrates how navigation reflects brand and affects site credibility Helps you understand the problem you're trying to solve before you set out to design Thoroughly reviews the mechanisms and different types of navigation Explores "information scent" and "information shape" Explains "persuasive" architecture and other design concepts Covers special contexts, such as navigation design for web applications Includes an entire chapter on tagging While Designing Web Navigation focuses on creating navigation systems for large, information-rich sites serving a business purpose, the principles and techniques in the book also apply to small sites. Well researched and cited, this book serves as an excellent reference on the topic, as well as a superb teaching guide. Each chapter ends with suggested reading and a set of questions that offer exercises for experiencing the concepts in action.
Author : James Miller
Publisher : Springer
Page : 390 pages
File Size : 53,9 Mb
Release : 2018-09-03
Category : Technology & Engineering
ISBN : 9783319789163
This textbook introduces the theories and practical procedures used in planetary spacecraft navigation. Written by a former member of NASA's Jet Propulsion Laboratory (JPL) navigation team, it delves into the mathematics behind modern digital navigation programs, as well as the numerous technological resources used by JPL as a key player in the field. In addition, the text offers an analysis of navigation theory application in recent missions, with the goal of showing students the relationship between navigation theory and the real-world orchestration of mission operations.
Author : William A. Imbriale
Publisher : John Wiley & Sons
Page : 320 pages
File Size : 42,7 Mb
Release : 2005-02-04
Category : Technology & Engineering
ISBN : 9780471726197
An important historical look at the space program's evolvingtelecommunications systems Large Antennas of the Deep Space Network traces the development ofthe antennas of NASA's Deep Space Network (DSN) from the network'sinception in 1958 to the present. It details the evolution of thelarge parabolic dish antennas, from the initial 26-m operation atL-band (960 MHz) through the current Ka-band (32 GHz) systems.Primarily used for telecommunications, these antennas also supportradar and radio astronomy observations in the exploration of thesolar system and the universe. In addition, the author also offersthorough treatment of the analytical and measurement techniquesused in design and performance assessment. Large Antennas of the Deep Space Network represents a vitaladdition to the literature in that it includes NASA-funded researchthat significantly impacts on deep space telecommunications. Partof the prestigious JPL Deep Space Communications and NavigationSeries, it captures fundamental principles and practices developedduring decades of deep space exploration, providing informationthat will enable antenna professionals to replicate radiofrequencies and optics designs. Designed as an introduction for students in the field as well as areference for advanced practitioners, the text assumes a basicfamiliarity with engineering and mathematical concepts andtechnical terms. The Deep Space Communications and Navigation Series is authored byscientists and engineers with extensive experience in astronautics,communications, and related fields. It lays the foundation forinnovation in the areas of deep space navigation and communicationsby disseminating state-of-the-art knowledge in key technologies.
Author : Catherine L. Thornton,James S. Border
Publisher : John Wiley & Sons
Page : 99 pages
File Size : 45,5 Mb
Release : 2005-03-04
Category : Technology & Engineering
ISBN : 9780471726166
Radiometric Tracking Techniques for Deep-Space Navigation focuses on a broad array of technologies and concepts developed over the last four decades to support radio navigation on interplanetary spacecraft. In addition to an overview of Earth-based radio navigation techniques, the book includes a simplified conceptual presentation of each radiometric measurement type, its information content, and the expected measeurement accuracy. The methods described for both aquiring and calibrating radiometric measurements also provide a robust system to support guidance and navigation for future robotic space exploration.
Author : Theodore D. Moyer
Publisher : Wiley-Interscience
Page : 584 pages
File Size : 41,7 Mb
Release : 2003-01-31
Category : Science
ISBN : UOM:39015056215083
A valuable reference for students and professionals in the field of deep space navigation Drawing on fundamental principles and practices developed during decades of deep space exploration at the California Institute of Technology’s Jet Propulsion Laboratory (JPL), this book documents the formation of program Regres of JPL’s Orbit Determination Program (ODP). Program Regres calculates the computed values of observed quantities (e.g., Doppler and range observables) obtained at the tracking stations of the Deep Space Network, and also calculates media corrections for the computed values of the observable and partial derivatives of the computed values of the observables with respect to the solve-for-parameter vector-q. The ODP or any other program which uses its formulation can be used to navigate a spacecraft anywhere in the solar system. A publication of the JPL Deep Space Communications and Navigation System Center of Excellence (DESCANSO), Formulation for Observed and Computed Values of Deep Space Network Data Types for Navigation is an invaluable resource for graduate students of celestial mechanics or astrodynamics because it: features the expertise of today’s top scientists places the entire program Regres formulation in an easy-to-access resource describes technology which will be used in the next generation of navigation software currently under development The Deep Space Communications and Navigation Series is authored by scientists and engineers with extensive experience in astronautics, communications, and related fields. It lays the foundation for innovation in the areas of deep space navigation and communications by conveying state-of-the-art knowledge in key technologies.
Author : David H. Rogstad,Alexander Mileant,Timothy T. Pham
Publisher : John Wiley & Sons
Page : 184 pages
File Size : 51,5 Mb
Release : 2005-02-18
Category : Technology & Engineering
ISBN : 9780471721307
An introduction to antenna Arraying in the Deep Space network Antenna arraying is the combining of the output from several antennas in order to improve the signal-to-noise ratio (SNR) of the received signal. Now implemented at the Goldstone Complex and other Deep Space Network (DSN) overseas facilities, antenna arraying provides flexible use of multiple antennas to increase data rates and has enabled NASA's DSN to extend the missions of some spacecraft beyond their planned lifetimes. Antenna Arraying Techniques in the Deep Space Network introduces the development and use of antenna arraying as it is implemented in the DSN. Drawing on the work of scientists at JPL, this timely volume summarizes the development of antenna arraying and its historical background; describes key concepts and techniques; analyzes and compares several methods of arraying; discusses several correlation techniques used for obtaining the combined weights; presents the results of several arraying experiments; and suggests directions for future work. An important contribution to the scientific literature, Antenna Arraying Techniques in the Deep Space Network * Was commissioned by the JPL Deep Space Communications and Navigation Systems (DESCANSO) Center of Excellence * Highlights many NASA-funded technical contributions pertaining to deep space communications systems * Is a part of the prestigious JPL Deep Space Communications and Navigation Series The Deep Space Communications and Navigation Series is authored by scientists and engineers with extensive experience in astronautics, communications, and related fields. It lays the foundation for innovation in the areas of deep space navigation and communications by disseminating state-of-the-art knowledge in key technologies.
Author : United States. Department of Commerce. Bureau of Navigation
Publisher : Unknown
Page : 754 pages
File Size : 44,8 Mb
Release : 1888
Category : Merchant merchant
ISBN : MINN:31951D00137002R