‘Citizen scientists’ on citizen science

Citizen science, also known as participatory or community science, involves the participation of non-professionally trained individuals in scientific research. This article, part of a series of articles aiming to map and theorise the postdigital dimensions of citizen science, presents diverse narratives from individuals actively engaged in citizen science endeavors. The authors were invited to share their experiences, motivations, challenges, and opportunities in their own words. Their perspectives are organized into three categories: (1) citizen science as a mediator between professional and amateur science, (2) citizen science for diverse publics and community action, and (3) citizen science from the margins. These narratives illuminate citizen science as not just a theoretical construct, but a dynamic methodological prism, revealing the complex entanglement of the postdigital realm and citizen science through innovative sociotechnical methods and approaches. Each contribution highlights the rich possibilities and challenges arising from the intertwining of community researchers and technology in the pursuit of knowledge, meaning, and action. This tapestry of experiences invites further exploration of the evolving landscape of postdigital citizen science

The Sudbury Neutrino Observatory

The Sudbury Neutrino Observatory is a second generation water Cherenkov detector designed to determine whether the currently observed solar neutrino deficit is a result of neutrino oscillations. The detector is unique in its use of D2O as a detection medium, permitting it to make a solar model-independent test of the neutrino oscillation hypothesis by comparison of the charged- and neutral-current interaction rates. In this paper the physical properties, construction, and preliminary operation of the Sudbury Neutrino Observatory are described. Data and predicted operating parameters are provided whenever possible.Comment: 58 pages, 12 figures, submitted to Nucl. Inst. Meth. Uses elsart and epsf style files. For additional information about SNO see http://www.sno.phy.queensu.ca . This version has some new reference

Transition between random and collective behaviour in spectra generated by two-body forces

Monte Carlo calculations for the spectra of βHR + αHQ, a random two-body hamiltonian (HR) augmented by an SU(3) interaction (HQ) reveal a rapid transition at α ≈ β for spaces exhibiting a well developed rotational band for α {greater-than or approximate} β and purely statistical behaviour for α {less-than or approximate} β. © 1982.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Fluctuation properties of nuclear energy levels: do theory and experiment agree

The fluctuation properties of nuclear energy levels are analyzed with new spectrally averaged measures. A remarkably close agreement between the predictions of random-matrix theories and experiment is found. © 1982 The American Physical Society.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Fluctuation properties of nuclear energy levels and widths: comparison of theory with experiment

SIGLEAvailable from CEN Saclay, Service de Documentation, 91191 Gif-sur-Yvette Cedex (France) / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc