Beam Line: Spring 2002, Vol. 32, No. 1
Author :
Publisher : DIANE Publishing
Page : 63 pages
File Size : 45,44 MB
Release :
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ISBN : 1422348946
Author :
Publisher : DIANE Publishing
Page : 63 pages
File Size : 45,44 MB
Release :
Category :
ISBN : 1422348946
Author : Laura A. Ackley
Publisher :
Page : 440 pages
File Size : 44,65 MB
Release : 2002
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Page : 834 pages
File Size : 34,34 MB
Release : 2003
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Page : 602 pages
File Size : 20,90 MB
Release : 2005
Category : Electronics
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Page : 2036 pages
File Size : 49,52 MB
Release : 2004
Category : Medicine
ISBN :
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Author : George Beam
Publisher : Routledge
Page : 243 pages
File Size : 45,66 MB
Release : 2017-09-08
Category : Social Science
ISBN : 1351476254
The Problem with Survey Research makes a case against survey research as a primary source of reliable information. George Beam argues that all survey research instruments, all types of asking-including polls, face-to-face interviews, and focus groups-produce unreliable and potentially inaccurate results. Because those who rely on survey research only see answers to questions, it is impossible for them, or anyone else, to evaluate the results. They cannot know if the answers correspond to respondents' actual behaviors (objective phenomena) or to their true beliefs and opinions (subjective phenomena). Reliable information can only be acquired by observation, experimentation, multiple sources of data, formal model building and testing, document analysis, and comparison. In fifteen chapters divided into six parts-Ubiquity of Survey Research, The Problem, Asking Instruments, Asking Settings, Askers, and Proper Methods and Research Designs-The Problem with Survey Research demonstrates how asking instruments, settings in which asking and answering take place, and survey researchers themselves skew results and thereby make answers unreliable. The last two chapters and appendices examine observation, other methods of data collection and research designs that may produce accurate or correct information, and shows how reliance on survey research can be overcome, and must be.
Author : Nilson
Publisher : Wiley
Page : pages
File Size : 17,75 MB
Release : 1987-04-13
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ISBN : 9780471830733
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Page : 748 pages
File Size : 16,9 MB
Release : 2003
Category : Architecture
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Author : Dan M. Goebel
Publisher : John Wiley & Sons
Page : 528 pages
File Size : 47,13 MB
Release : 2008-12-22
Category : Technology & Engineering
ISBN : 0470436263
Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.
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Publisher :
Page : 850 pages
File Size : 32,71 MB
Release : 2005
Category : Physics
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