Download or read book Error Components in Grouped Data written by William T. Dickens and published by . This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: When estimating linear models using grouped data researchers typically weight each observation by the group size. Under the assumption that the regression errors for the underlying micro data have expected values of zero, are independent and are homoscedastic, this procedure produces best linear unbiased estimates. This note argues that for most applications in economics the assumption that errors are independent within groups is inappropriate. Since grouping is commonly done on the basis of common observed characteristics, it is inappropriate to assume that there are no unobserved characteristics in common. If group members have unobserved characteristics in common, individual errors will be correlated. If errors are correlated within groups and group sizes are large then heteroscedasticity may be relatively unimportant and weighting by group size may exacerbate heteroscedasticity rather than eliminate it. Two examples presented here suggest that this may be the effect of weighting in most non-experimental applications. In many situations unweighted ordinary least squares may be a preferred alternative. For those cases where it is not, a maximum likelihood and an asymptotically efficient two-step generalized least squares estimator are proposed. An extension of the two-step estimator for grouped binary data is also presented.

Download or read book Habituation Sensitization and Behavior written by Harman Peeke and published by Elsevier. This book was released on 2012-12-02 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Habituation, Sensitization, and Behavior reviews some of the important advances that have been made toward understanding the mechanisms underlying, and the significance of, the phenomena traditionally associated with habituation, sensitization, and behavior in intact organisms. Habituation and sensitization are used to refer to underlying theoretical processes, and behavior changes are described at the response level. Comprised of 12 chapters, this book begins with an overview of approaches, constructs, and terminology used in the study of response change in the intact organism. The discussion then turns to a two-factor dual-process theory of habituation and sensitization, together with a theory of the mechanism of habituation that emphasizes the assignment of responses to stimuli. Subsequent chapters explore the link between memory and habituation; statistical strategies for analyzing repeated-measures data; cellular approaches used in the analysis of habituation and sensitization in Aplysia; and intrinsic and extrinsic mechanisms of habituation and sensitization. The habituation of central nervous system evoked potentials is also considered, with particular reference to intrinsic habituation in the neocortex, allocortex, and mesencephalon. The final chapter is devoted to evolutionary determination of response likelihood and habituation. This monograph should be of interest to practitioners in the fields of behavioral biology, psychobiology, psychology, and psychiatry.

Download or read book Handbook of Labor Economics written by Orley Ashenfelter and published by Elsevier. This book was released on 1999-11-18 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern labor economics has continued to grow and develop since the first volumes of this Handbook were published. The subject matter of labor economics continues to have at its core an attempt to systematically find empirical analyses that are consistent with a systematic and parsimonious theoretical understanding of the diverse phenomenon that make up the labor market. As before, many of these analyses are provocative and controversial because they are so directly relevant to both public policy and private decision making. In many ways the modern development in the field of labor economics continues to set the standards for the best work in applied economics.This volume of the Handbook has a notable representation of authors - and topics of importance - from throughout the world.

Download or read book Copyright Industries and the Impact of Creative Destruction written by Jiabo Liu and published by Routledge. This book was released on 2013 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on Schumpeter's theory of creative destruction, the book explores whether the expansion of the duration of copyright promotes or precludes the growth of the book publishing industry. The book reviews the historical development of UK copyright expansion and also considers copyright in the digital age. By exploring legal and economic aspects of copyright protection, and the expansion of copyright duration in particular, the author suggests changes to copyright policy which would have a significant impact on the economics of innovation in the creative industries.

Download or read book Analyzing data from nonrandomized group studies written by Jeremy W. Bray and published by RTI Press. This book was released on 2008-11-03 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers evaluating prevention and early intervention programs must often rely on diverse study designs that assign groups to various study conditions (e.g., intervention versus control). Although the strongest designs randomly assign these groups to conditions, researchers frequently must use nonrandomized research designs in which assignments are made based on the characteristics of the groups. With nonrandomized group designs, little guidance is available on how best to analyze the data. We provide guidance on which techniques work best under different data conditions and make recommendations to researchers about how to choose among the various techniques when analyzing data from a pre-test/post-test nonrandomized study. We use data from the Center for Substance Abuse Prevention’s Workplace Managed Care initiative to compare the performance of the various methods commonly applied in quasi-experimental and group assignment designs.

Download or read book Statistical uses of administrative records written by Beth Kilss and published by . This book was released on 1984 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Risk Assessment of Power Systems written by Wenyuan Li and published by John Wiley & Sons. This book was released on 2014-03-24 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extended models, methods, and applications in power system risk assessment Risk Assessment of Power Systems: Models, Methods, and Applications, Second Edition fills the gap between risk theory and real-world application. Author Wenyuan Li is a leading authority on power system risk and has more than twenty-five years of experience in risk evaluation. This book offers real-world examples to help readers learn to evaluate power system risk during planning, design, operations, and maintenance activities. Some of the new additions in the Second Edition include: New research and applied achievements in power system risk assessment A discussion of correlation models in risk evaluation How to apply risk assessment to renewable energy sources and smart grids Asset management based on condition monitoring and risk evaluation Voltage instability risk assessment and its application to system planning The book includes theoretical methods and actual industrial applications. It offers an extensive discussion of component and system models, applied methods, and practical examples, allowing readers to effectively use the basic concepts to conduct risk assessments for power systems in the real world. With every original chapter updated, two new sections added, and five entirely new chapters included to cover new trends, Risk Assessment of Power Systems is an essential reference.

Download or read book Sociolinguistics Soziolinguistik Volume 2 written by Ulrich Ammon and published by Walter de Gruyter. This book was released on 2008-07-14 with total page 907 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the first edition of the handbook Sociolinguistics/Soziolinguistik , the then young discipline has changed and developed considerably. The field has left behind its status as an interdiscipline between sociology and linguistics and is now a worldwide established field. Sociolinguistics continues to contribute to solving practical problems in areas such as language planning and standardization, language policy, as well as in language didactics and speech therapy. Moreover, new topics and areas of application have arisen from the autonomy of the discipline - these have been systematically and extensively included in the second edition of the handbook. The new overall concept depicts the regional and disciplinary representativity of sociolinguistic research while offering an encyclopedia-like useablitiy for all its readers. This includes theoretical depth and stringency for readers interested in theory, as well as methodical abundance and detail for empirical researchers. The descriptions of methods are so informative and precise that they can directly be used in the preparation of project planning. Similarly, the descriptions in the practice-oriented articles are so precise that users can accurately assess to what extent they can expect a certain sociolinguistic approach to help solve their problems. With an extensive description as its goal, the second edition of the handbook Sociolinguistics/Soziolinguistik takes into account the current standing of the discipline and the modified structure of the field.

Download or read book Statistics of Income and Related Administrative Record Research written by American Statistical Association. Annual Meeting and published by . This book was released on 1982 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reliability Abstracts and Technical Reviews written by United States. National Aeronautics and Space Administration. Office of Reliability and Quality Assurance and published by . This book was released on 1969 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The methods and materials of demography written by Henry S. Shryock and published by . This book was released on 1980 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistics of Income and Related Administrative Record Research written by American Statistical Association. Meeting and published by . This book was released on 1982 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Demography and Forecasting written by Juha Alho and published by Springer Science & Business Media. This book was released on 2006-05-27 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a unique introduction to demographic problems in a familiar language. Presents a unified statistical outlook on both classical methods of demography and recent developments. Exercises are included to facilitate its classroom use. Both authors have contributed extensively to statistical demography and served in advisory roles and as statistical consultants in the field.

Download or read book Environmental Technology Innovation and ESG Investment written by Sumiko Takaoka and published by Springer Nature. This book was released on with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Procedures for Agricultural Research written by Kwanchai A. Gomez and published by John Wiley & Sons. This book was released on 1984-02-17 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here in one easy-to-understand volume are the statistical procedures and techniques the agricultural researcher needs to know in order to design, implement, analyze, and interpret the results of most experiments with crops. Designed specifically for the non-statistician, this valuable guide focuses on the practical problems of the field researcher. Throughout, it emphasizes the use of statistics as a tool of research—one that will help pinpoint research problems and select remedial measures. Whenever possible, mathematical formulations and statistical jargon are avoided. Originally published by the International Rice Research Institute, this widely respected guide has been totally updated and much expanded in this Second Edition. It now features new chapters on the analysis of multi-observation data and experiments conducted over time and space. Also included is a chapter on experiments in farmers' fields, a subject of major concern in developing countries where agricultural research is commonly conducted outside experiment stations. Statistical Procedures for Agricultural Research, Second Edition will prove equally useful to students and professional researchers in all agricultural and biological disciplines. A wealth of examples of actual experiments help readers to choose the statistical method best suited for their needs, and enable even the most complicated procedures to be easily understood and directly applied. An International Rice Research Institute Book

Download or read book Monthly Weather Review written by and published by . This book was released on 1983 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Econometric Analysis of Panel Data written by Badi H. Baltagi and published by Springer Nature. This book was released on 2021-03-16 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook offers a comprehensive introduction to panel data econometrics, an area that has enjoyed considerable growth over the last two decades. Micro and Macro panels are becoming increasingly available, and methods for dealing with these types of data are in high demand among practitioners. Software programs have fostered this growth, including freely available programs in R and numerous user-written programs in both Stata and EViews. Written by one of the world’s leading researchers and authors in the field, Econometric Analysis of Panel Data has established itself as the leading textbook for graduate and postgraduate courses on panel data. It provides up-to-date coverage of basic panel data techniques, illustrated with real economic applications and datasets, which are available at the book’s website on springer.com. This new sixth edition has been fully revised and updated, and includes new material on dynamic panels, limited dependent variables and nonstationary panels, as well as spatial panel data. The author also provides empirical illustrations and examples using Stata and EViews. “This is a definitive book written by one of the architects of modern, panel data econometrics. It provides both a practical introduction to the subject matter, as well as a thorough discussion of the underlying statistical principles without taxing the reader too greatly." Professor Kajal Lahiri, State University of New York, Albany, USA. "This book is the most comprehensive work available on panel data. It is written by one of the leading contributors to the field, and is notable for its encyclopaedic coverage and its clarity of exposition. It is useful to theorists and to people doing applied work using panel data. It is valuable as a text for a course in panel data, as a supplementary text for more general courses in econometrics, and as a reference." Professor Peter Schmidt, Michigan State University, USA. “Panel data econometrics is in its ascendancy, combining the power of cross section averaging with all the subtleties of temporal and spatial dependence. Badi Baltagi provides a remarkable roadmap of this fascinating interface of econometric method, enticing the novitiate with technical gentleness, the expert with comprehensive coverage and the practitioner with many empirical applications.” Professor Peter C. B. Phillips, Cowles Foundation, Yale University, USA.