1.

Record Nr.

UNINA9910786125803321

Autore

Douglas Alan <1936->

Titolo

Forensic seismology and nuclear test bans / / Alan Douglas

Pubbl/distr/stampa

Cambridge : , : Cambridge University Press, , 2013

ISBN

1-107-32710-5

1-107-23830-7

1-107-33686-4

1-107-33275-3

1-107-33354-7

1-107-33520-5

1-299-40327-1

1-107-33603-1

1-139-52400-3

Descrizione fisica

1 online resource (xliii, 514 pages) : digital, PDF file(s)

Disciplina

623.4/51190287

Soggetti

Underground nuclear explosions - Detection

Nuclear weapons - Testing - Detection

Seismic waves - Analysis

Seismology

Nuclear arms control - Verification

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Title from publisher's bibliographic system (viewed on 05 Oct 2015).

Nota di bibliografia

Includes bibliographical references and indexes.

Nota di contenuto

Contents; Preface; Abbreviations and mathematical symbols; Abbreviations; Seismological stations; Mathematical symbols; Prologue; Forensic seismology and UK policy on a CTBT; 1 Seismology: ancient and modern; 1.1 The long march begins; 1.2 Seismic signals and noise; 1.3 Seismometers; 1.4 Seismometer arrays; 1.5 Identification; 1.6 Epicentres and OSIs; 1.7 Seismograms and seismological bulletins; 1.8 Earth models and seismic sources; 1.9 Seismic source size and explosion yield; 1.10 The International Monitoring System (IMS); 1.11 Scope of the book

2 Statistical solutions to seismological problems2.1 Introduction; 2.2 The method of least squares; 2.2.1 Linear least squares; 2.2.2



Generalized least squares; 2.2.3 Least squares with constraints; 2.2.4 Non-linear least squares - hypocentre estimation from P-wave arrival times; 2.2.5 Confidence limits and significance tests; 2.3 Maximum-likelihood estimators; 2.4 Weighting; 3 Seismograms as time series; 3.1 Introduction; 3.2 Analogue and digital beamforming; 3.3 Fourier spectra; 3.4 Digital filtering; 3.5 Least squares estimation of approximate filters

3.6 Modelling and measuring the effects of anelastic attenuation3.7 The Hilbert transform and its uses; 3.8 Seismogram synthesis as filtering; 3.9 Group and phase speed; 3.10 Noise analysis; 3.11 Signals and noise in frequency/wave-number space; 4 Seismographs and seismograms; 4.1 Introduction; 4.2 Direct-reading seismometers without feedback; 4.3 The velocity transducer without feedback; 4.3.1 The response of seismometer--amplifier systems; 4.3.2 LP seismometers; 4.3.3 Calibration; 4.4 Miniature broad-band seismometers; 4.4.1 System noise; 4.4.2 The AWE--Guralp borehole seismometer

4.4.3 Borehole operation4.5 Sources of seismic noise; 4.6 Siting seismographs; 4.7 Estimating broad-band signals from SP recordings; 4.8 Recording systems for forensic seismology; 5 Seismometer arrays and processing methods; 5.1 Introduction; 5.2 Optimum array processing for four noise models; 5.3 Array sum response in frequency/wave-number space; 5.3.1 Line arrays; 5.3.2 UK-type arrays; 5.3.3 The correlator response; 5.4 Wave-number filtering; 5.4.1 Signals and noise at EKA; 5.4.2 Estimating MP filters and measuring their effectiveness; 5.5 Automatic processing

5.5.1 Errors due to spatial aliasing in array estimates of vector slowness5.6 The design and performance of the UK-type arrays; 5.7 Performance of other arrays; 5.8 Future of arrays for signal extraction; 5.9 Using arrays to measure travel-time gradients; 5.9.1 Single-array methods; 5.9.2 Multiple-array methods; 5.9.3 dT/d and phase identification; 6 Seismogram interpretation and synthesis; 6.1 Introduction; 6.2 Synthesizing P seismograms; 6.2.1 P seismograms from earthquakes; 6.2.2 P seismograms from explosions; 6.3 Analysis and synthesis of surface-wave seismograms

6.3.1 Measuring dispersion: analyst methods

Sommario/riassunto

With the signing in 1996 of the Comprehensive Nuclear Test Ban Treaty, interest has grown in forensic seismology: the application of seismology to nuclear test ban verification. This book, based on over 50 years of experience in forensic seismology research, charts the development of methods of seismic data analysis. Topics covered include: the estimation of seismic magnitudes, travel-time tables and epicentres; seismic signal processing; and the use of seismometer arrays. Fully illustrated with seismograms from explosions and earthquakes, the book demonstrates methods and problems of visual analysis. Each chapter provides exercises to help the reader familiarise themselves with practical issues in the field of forensic seismology, and figures and solutions to exercises are also available online. The book is a key reference work for academic researchers and specialists in the area of forensic seismology and Earth structure, and will also be valuable to postgraduates in seismology and solid earth geophysics.



2.

Record Nr.

UNINA9910824476103321

Autore

Sallabank Julia

Titolo

Attitudes to endangered languages : identities and policies / / Julia Sallabank [[electronic resource]]

Pubbl/distr/stampa

Cambridge : , : Cambridge University Press, , 2013

ISBN

1-139-89225-8

1-107-70279-8

1-107-70173-2

1-107-66693-7

1-107-68978-3

1-139-34416-1

1-107-70373-5

1-107-59823-0

Descrizione fisica

1 online resource (xiv, 271 pages) : digital, PDF file(s)

Classificazione

LAN009000

Disciplina

417/.7

Soggetti

Language obsolescence

Language maintenance

Language attrition

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Title from publisher's bibliographic system (viewed on 05 Oct 2015).

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

1. Language endangerment, language revitalisation and language policy; 2. Small islands on the periphery of Britain; 3. Researching language attitudes and ideologies; 4. Local language practices on a small island in the twenty-first century; 5. Language attitudes, ideologies and identity on a small island; 6. Language planning and policy: bottom-up and top-down; 7. Implications.

Sommario/riassunto

Language attitudes and ideologies are of key importance in assessing the chances of success of revitalisation efforts for endangered languages. However, few book-length studies relate attitudes to language policies, or address the changing attitudes of non-speakers and the motivations of members of language movements. Through a combination of ethnographic research and quantitative surveys, this book presents an in-depth study of revitalisation efforts for indigenous



languages in three small islands round the British Isles. The author identifies and confronts key issues commonly faced by practitioners and researchers working in small language communities with little institutional support. This book explores the complex relationship of ideologies, identity and language-related beliefs and practices, and examines the implications of these factors for language revitalisation measures. Essential reading for researchers interested in language endangerment and revitalisation, sociolinguistics, linguistic anthropology and language policy and planning, as well as language planners and campaigners.

3.

Record Nr.

UNINA9910220055903321

Autore

John Cromby

Titolo

How best to 'go on'? Prospects for a 'Modern Synthesis in the sciences of mind

Pubbl/distr/stampa

Frontiers Media SA, 2016

Descrizione fisica

1 online resource (91 p.)

Collana

Frontiers Research Topics

Soggetti

Psychology

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Sommario/riassunto

Psychology straddles areas from the biological to the social and cultural. Within that vast range, there have been recent explosions of interest in neuropsychology, genetics and epigenetics, and the evolutionary bases of mindedness. Correspondingly, there have been conceptual innovations and new empirical evidence in relation to the embodied, social and discursive processes supporting mind and personhood. Simultaneously, awareness of developmental processes and their dynamic interweaving of genetic, physiological, neurological, social and cultural elements has also increased. Might such developments help 'connect the dots' between diverse aspects of mindedness and the contexts within which it arises? Whilst it seems



clear that mind is co-constituted of both biological and socio-cultural processes, how might we bring these disparate realms of knowledge together? In a number of these areas, suggestive integrative possibilities have been explored (e.g., predictive processing, embodied and situated cognition, dynamic developmental systems theory) and insights such as a focus on action, 'knowledge as skills', embeddedness and connectivity have been pursued across a range of disciplines. This edited collection of articles bring together such possibilities - and others - in the same forum in order to provide an opportunity to re-visit a recurring discussion within theoretical psychology: The claimed lack of - and potential for - theoretical synthesis and unity. While the chapters range over a number of areas of research, this collection is focused on current prospects for conceptual synthesis within - or convergence of research between - aspects of mind and mindedness. As is clear from the contributions, it highlights integrative conceptual proposals that emphasize action-orientation, process, embeddedness and connectivity - especially between explanatory 'levels'. Beyond specific proposals for integration, several of the contributions explicitly or implicitly expose broader questions about the purpose of psychological research, the epistemological and ontological commitments required, and the relevant social, political and economic contexts within which such research is performed. This is perhaps inevitable since any aim for synthesis of various understandings of mind will - or should - lead to consideration of the general implications, beyond the 'science', that follow from an integrated account of mind and mindedness. Whether or not the contributions in this volume provide insights into profitable paths towards greater theoretical synthesis in the sciences of mind or, alternatively, provide grist for the mill of renewed skepticism over the potential or even desirability of such synthesis is unpredictable. Whichever the outcome, we feel sure that they will help provoke future productive research in, and thinking about, the sciences of mind.