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Statistical System (statistical + system)

Distribution by Scientific Domains
Mathematics and Statistics57%

Selected Abstracts

Improving the evidence base for international comparative research

INTERNATIONAL SOCIAL SCIENCE JOURNAL, Issue 193-194 2008
Ekkehard Mochmann
Industrial societies today produce abundant data fed by the statistical system, social research, market research and administrative data. This is increasingly complemented by processing data produced from sources like commercial transactions. Looking at societies in an international comparative perspective, however, we find many incoherent patterns or even white spots on the globe. Nevertheless, we can observe encouraging progress over past decades. The pioneers of the data movement worked towards an international network of data infrastructures that were conceived as building blocks in a system of social observation. Gaps in the statistical data base had to be filled by sample surveys from social research. This resulted in a network of social science data services to preserve and process the data collected to make them available for secondary analysis, and systematic efforts to continuously collect data comparative by design and to make them available as a public good to the scientific community at large. Increasingly we can observe a rapprochement that has been taking place between social policy and social research since the turn of the millennium. Facing the challenges of globalisation we cannot however, overlook the fact that in spite of all progress, social science data have been collected predominantly with a national perspective, are not well integrated and , even if they are technically and legally accessible , do not easily lend themselves to comparison between nations or periods of time. International data programmes may well profit from the methodological standardisation and harmonisation of measurements as well as from technical progress towards the easier access to and interoperability of data bases. These processes will profit much, if growing efforts to agree on data policies and funding perspectives for international and transcontinental cooperation succeed. [source]

ICT Statistics at the New Millennium,Developing Official Statistics,Measuring the Diffusion of ICT and its Impact

INTERNATIONAL STATISTICAL REVIEW, Issue 1 2003
Heli Jeskanen-Sundström
Summary The paper gives a short and very rough overview of the ongoing work in the field of statistics relating to the development of information and communication technology (ICT) and its impacts on the economies and on the society as a whole. It introduces three slightly different approaches with different emphasis on describing the emergence and diffusion of ICT and the respective economic and social change. These are termed the indicators approach, the new economy approach and the intellectual capital approach. The paper also discusses the basic requirements for the establishment of a new statistical system, as well as the present obstacles and problems of this work. Finally, some remarks are presented regarding further statistical co-operation in this field. Résumé Cet exposé donne un aperçu court et très approximatif du travail en cours dans le domaine de la statistique concernant le développement de la technologie de l'information et de la communication (TIC) et ses effets sur les économies et la société dans son ensemble. II propose trois approches un peu différentes, avec une accentuation distincte, sur la description de l'émergence et la diffusion de la TIC et le changement économique and social respectif. Celles-ci sont nommées l'approche des indicateurs, l'approche de la nouvelle économie et l'approché du capital intellectuel. Cet exposé traite également des conditions de base nécessaires pour la création d'un nouveau système statistique ainsi que des obstacles et des problèmes actuellement rencontrés dans ce travail. Enfin, l'exposé présente quelques remarques sur la coopération statistique future dans ce domaine. [source]

Official statistics, public policy and public trust

JOURNAL OF THE ROYAL STATISTICAL SOCIETY: SERIES A (STATISTICS IN SOCIETY), Issue 2 2008
D. Tim Holt
Summary., The question of public confidence in official statistics has been central to government statistical policy for the last 10 years. This year the Statistics and Registration Service Act 2007 was passed. The paper suggests key characteristics of the new arrangements that will be needed if public confidence in the official statistics outputs is to be strengthened. It is argued that this will depend on public confidence in the statistical system as a whole rather than just the new Board. The organizational structure of the UK statistical system is described and this is linked to the issue of public confidence. Finally the wider questions of evidence-based policy and the use of statistics and statistical thinking throughout government are discussed. [source]

Editorial: The growing demands on the European statistical system

JOURNAL OF THE ROYAL STATISTICAL SOCIETY: SERIES A (STATISTICS IN SOCIETY), Issue 2 2001
Lucy McKeever
[source]

Liouville and Fokker,Planck dynamics for classical plasmas and radiation

ANNALEN DER PHYSIK, Issue 6 2006
R.F. Alvarez-Estrada
Abstract We consider a nonequilibrium statistical system formed by many classical non-relativistic particles of opposite electric charges (plasma) and by the classical dynamical electromagnetic (EM) field. The charges interact with one another directly through instantaneous Coulomb potentials and with the dynamical degrees of freedom of the transverse EM field. The system may also be subject to external influences of: i) either static, but spatially inhomogeneous, electric and magnetic fields (case 1)), or ii) weak distributions of electric charges and currents (case 2)). The particles and the dynamical EM field are described, for any time t > 0, by the classical phase-space probability distribution functional (CPSPDF) f and, at the initial time (t = 0), by the initial CPSPDF fin. The CPSPDF f and fin, multiplied by suitable Hermite polynomials (for particles and field) and integrated over all canonical momenta, yield new moments. The Liouville equation and fin imply a new nonequilibrium linear infinite hierarchy for the moments. In case 1), fin describes local equilibrium but global nonequilibrium, and we propose a long-time approximation in the hierarchy, which introduces irreversibility and relaxation towards global thermal equilibrium. In case 2), the statistical system, having been at global thermal equilibrium, without external influences, for t , 0, is subject to weak external charge-current distributions: then, new hierarchies for moments and their long-time behaviours are discussed in outline. As examples, approximate mean-field (Vlasov) approximations are treated for both cases 1) and 2). [source]