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Author: Andrzej M. Trzynadlowski Publisher: Springer Science & Business Media ISBN: 1461527309 Category : Technology & Engineering Languages : en Pages : 269
Book Description
The Field Orientation Principle was fIrst formulated by Haase, in 1968, and Blaschke, in 1970. At that time, their ideas seemed impractical because of the insufficient means of implementation. However, in the early eighties, technological advances in static power converters and microprocessor-based control systems made the high-performance a. c. drive systems fully feasible. Since then, hundreds of papers dealing with various aspects of the Field Orientation Principle have appeared every year in the technical literature, and numerous commercial high-performance a. c. drives based on this principle have been developed. The term "vector control" is often used with regard to these systems. Today, it seems certain that almost all d. c. industrial drives will be ousted in the foreseeable future, to be, in major part, superseded by a. c. drive systems with vector controlled induction motors. This transition has already been taking place in industries of developed countries. Vector controlled a. c. drives have been proven capable of even better dynamic performance than d. c. drive systems, because of higher allowable speeds and shorter time constants of a. c. motors. It should be mentioned that the Field Orientation Principle can be used in control not only of induction (asynchronous) motors, but of all kinds of synchronous motors as well. Vector controlled drive systems with the so called brushless d. c. motors have found many applications in high performance drive systems, such as machine tools and industrial robots.
Author: Andrzej M. Trzynadlowski Publisher: Springer Science & Business Media ISBN: 1461527309 Category : Technology & Engineering Languages : en Pages : 269
Book Description
The Field Orientation Principle was fIrst formulated by Haase, in 1968, and Blaschke, in 1970. At that time, their ideas seemed impractical because of the insufficient means of implementation. However, in the early eighties, technological advances in static power converters and microprocessor-based control systems made the high-performance a. c. drive systems fully feasible. Since then, hundreds of papers dealing with various aspects of the Field Orientation Principle have appeared every year in the technical literature, and numerous commercial high-performance a. c. drives based on this principle have been developed. The term "vector control" is often used with regard to these systems. Today, it seems certain that almost all d. c. industrial drives will be ousted in the foreseeable future, to be, in major part, superseded by a. c. drive systems with vector controlled induction motors. This transition has already been taking place in industries of developed countries. Vector controlled a. c. drives have been proven capable of even better dynamic performance than d. c. drive systems, because of higher allowable speeds and shorter time constants of a. c. motors. It should be mentioned that the Field Orientation Principle can be used in control not only of induction (asynchronous) motors, but of all kinds of synchronous motors as well. Vector controlled drive systems with the so called brushless d. c. motors have found many applications in high performance drive systems, such as machine tools and industrial robots.
Author: Leroy Dale Pigg Publisher: ISBN: Category : Airplanes Languages : en Pages : 60
Book Description
This study was conducted to determine the relative effectiveness of a mirror arrangement of controls versus a place arrangement of controls in a task involving bilateral transfer of training. Comparisons between the two arrangements were made on the basis of response latency, errors, subject-expectancy, and subject-preference.
Author: Jerry M. Burger Publisher: Springer Science & Business Media ISBN: 1475799845 Category : Psychology Languages : en Pages : 242
Book Description
This book is a cumulation of a research program that began in the sum mer of 1978, when I was a doctoral student at the University of Missouri. What started as a graduate student' s curiosity about individual differ ences in need for personal control led to a personality scale, a few pub lications, some additional questions, and additional research. For reasons I no longer recall, I named this personality trait desire for control. One study led to another, and questions by students and colleagues often spurred me to apply desire for control to new areas and new questions. At the same time, researchers around the globe began using the scale and sending me reprints of articles and copies of papers describing work they had done on desire for contro!. In the past decade or so, I have talked or corresponded with dozens of students who have used the scale in their doctoral dissertation and master's thesis research. I have heard of or seen translations of the Desirability of Control Scale into German, Polish, Japanese, and French. There is also a children's version of the scale. I estirnate that there have now been more than a hundred studies conducted on desire for contro!.
Author: Andrew S. Rancer Publisher: SAGE ISBN: 1452279071 Category : Language Arts & Disciplines Languages : en Pages : 337
Book Description
"Argumentative and Aggressive Communication is an excellent balance between research and application. This fits with the tradition of having high concern for application in the field of communication, and leaning on strong research to guide that application." —James C. McCroskey, West Virginia University "The thoroughness of coverage that this book devotes to perhaps the most important research area in communication today provides students with amazing insight into conflict, argumentativeness, aggressiveness, and a variety of other concepts and skills central to communication!" —Joseph A. DeVito, Hunter College of the City University of New York Argumentative and Aggressive Communication: Theory, Research, and Application is the first text to describe the development, history, research, and application efforts on the communication traits of argumentativeness and verbal aggressiveness. Authors Andrew S. Rancer and Theodore A. Avtgis include a collection of nine widely used reliable and valid instruments which the reader, the researcher, and the practitioner can use for diagnostic and research purposes. Key Features: Discusses the origin and structure of argumentative and aggressive communication: The book completely describes the development of the argumentativeness and verbal aggressiveness trait constructs. In addition, the measurement of argumentativeness and verbal aggressiveness is treated in the most comprehensive way to date. Explores the function of argumentative and aggressive communication in various contexts: Guidelines are provided on how to approach conflict and disagreement across multiple contexts in a constructive fashion. This text synthesizes the large corpus of research in several areas of communication, including family, organizational, intercultural, instructional, and mediated contexts. Provides conclusions drawn from this literature: Suggestions are given for future research on argumentative and aggressive communication from ten distinguished communication scholars. Intended Audience: Written in a style accessible to undergraduates, yet comprehensive and detailed enough for graduate students and researchers, this is an ideal text for courses in Communication and Personality; Communication and Conflict; Interpersonal Communication; Social Psychology-Personality; and Psychology-Aggression.
Author: Mark Schafer Publisher: Routledge ISBN: 1000348431 Category : Political Science Languages : en Pages : 384
Book Description
In this book, senior scholars and a new generation of analysts present different applications of recent advances linking beliefs and decision-making, in the area of foreign policy analysis with strategic interactions in world politics. Divided into five parts, Part 1 identifies how the beliefs in the cognitive operational codes of individual leaders explain the political decisions of states. In Part 2, five chapters illustrate progress in comparing the operational codes of individual leaders, including Vladimir Putin of Russia, three US presidents, Bolivian president Evo Morales, Sri Lanka’s President Chandrika Kumaratunga, and various leaders of terrorist organizations operating in the Middle East and North Africa. Part 3 introduces a new Psychological Characteristics of Leaders (PsyCL) data set containing the operational codes of US presidents from the early 1800s to the present. In Part 4, the focus is on strategic interactions among dyads and evolutionary patterns among states in different regional and world systems. Part 5 revisits whether the contents of the preceding chapters support the claims about the links between beliefs and foreign policy roles in world politics. Richly illustrated and with comprehensive analysis Operational Code Analysis and Foreign Policy Roles will be of interest to specialists in foreign policy analysis, international relations theorists, graduate students, and national security analysts in the policy-making and intelligence communities.
Author: Stuart Karabenick Publisher: Emerald Group Publishing ISBN: 0857241117 Category : Psychology Languages : en Pages : 277
Book Description
Examines seven prominent theories of motivation, including research on self-efficacy, achievement goal theory, expectancy-value theory, self-determination theory, self-concept research, implicit motives, and interest. This book also examines the associations between motivation and other constructs, such as emotion and self-regulation.
Author: David L. Featherman Publisher: Routledge ISBN: 1317728955 Category : Psychology Languages : en Pages : 307
Book Description
The final volume in this significant series, this publication mirrors the broad scientific attention given to ideas and issues associated with the life-span perspective: constancy and change in human development; opportunities for and constraints on plasticity in structure and function across life; the potential for intervention across the entire life course (and thus for the creation of an applied developmental science); individual differences (diversity) in life paths, in contexts (or the ecology) of human development, and in changing relations between people and contexts; interconnections and discontinuities across age levels and developmental periods; and the importance of integrating biological, psychological, social, cultural, and historical levels of organization in order to understand human development.
Author: Zezhou Sun Publisher: Springer Nature ISBN: 9811547947 Category : Technology & Engineering Languages : en Pages : 630
Book Description
This book offers readers essential insights into system design for deep space probes and describes key aspects such as system design, orbit design, telecommunication, GNC, thermal control, propulsion, aerobraking and scientific payload. Each chapter includes the basic principles, requirements analysis, procedures, equations and diagrams, as well as practical examples that will help readers to understand the research on each technology and the major concerns when it comes to developing deep space probes. An excellent reference resource for researchers and engineers interested in deep space exploration, it can also serve as a textbook for university students and those at institutes involved in aerospace.
Author: Rachel Seginer Publisher: Springer Science & Business Media ISBN: 0387886419 Category : Psychology Languages : en Pages : 267
Book Description
By contemporary I mean a present with an anticipated future, for we must do our best to overcome clinical habits which make us assume that we have done our part if we have clari?ed the past. (Erikson, 1968, pp. 30–31). The scope of time ahead which in?uences present behavior, and is therefore to be regarded as part of the present life-space, increases during development. This change in time perspective is one of the most fundamental facts of development. Adolescence seems to be a period of particularly deep change in respect to time perspective. (Lewin, 1939, p. 879). I chose to open this book with two excerpts from Erikson’s and Lewin’s writings because they indicate that future orientation has had its deep roots in psychol- ical thinking, and call readers’ attention to the long standing interest in two f- damental issues: the motivational power of constructed future images and their development across age. More speci?cally, Erikson and Lewin’s writings und- score the importance of future thinking for in?uencing present behavior tendencies, and point out that the ability to think about the future and realize the “scope of time ahead” increase with age, and reach a special developmental signi?cance in adolescence.
Author: Andrzej M. Trzynadlowski
Author: Andrzej M. Trzynadlowski
Author: Leroy Dale Pigg
Author: Jerry M. Burger
Author: Andrew S. Rancer
Author: Mark Schafer
Author: Stuart Karabenick
Author: United States. Civil Aeronautics Administration
Author: David L. Featherman
Author: Zezhou Sun
Author: Rachel Seginer