York University

About: York University is a education organization based out in Toronto, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 18899 authors who have published 43357 publications receiving 1568560 citations.

“The question of belief”: writing poststructural ethnography

Abstract: This article engages current poststructural debates over ethnographic representation. It questions three types of ethnographic authority: the authority of empiricism, the authority of language, and the authority of reading. In performing a form of self‐speculative critique, the author moves behind the scenes of her own ethnography, Practice Makes Practice: A Critical Study of Learning to Teach, to consider the problem of what poststructural theories “do” to ethnographic writing. Two related themes are elaborated in relation to how poststructural debates fashioned interpretive efforts: conceptual issues in the poststructural study of teaching and theoretical issues in the production of ethnographic narratives. Can there be an educational ethnography that exceeds the constraints of humanism? What if the ethnographer began not just to question the discourse of others but to engage the relation between the discourses that render ethnography intelligible and the ethnographic report?

Science with ASKAP: The Australian square-kilometre-array pathfinder

Abstract: The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any existing radio facility. A majority of the key science for the SKA will be addressed through large-area imaging of the Universe at frequencies from 300 MHz to a few GHz. The Australian SKA Pathfinder (ASKAP) is aimed squarely in this frequency range, and achieves instantaneous wide-area imaging through the development and deployment of phase-array feed systems on parabolic reflectors. This large field-of-view makes ASKAP an unprecedented synoptic telescope poised to achieve substantial advances in SKA key science. The central core of ASKAP will be located at the Murchison Radio Observatory in inland Western Australia, one of the most radio-quiet locations on the Earth and one of the sites selected by the international community as a potential location for the SKA. Following an introductory description of ASKAP, this document contains 7 chapters describing specific science programmes for ASKAP. In summary, the goals of these programmes are as follows: The combination of location, technological innovation and scientific program will ensure that ASKAP will be a world-leading radio astronomy facility, closely aligned with the scientific and technical direction of the SKA. A brief summary chapter emphasizes the point, and considers discovery space.

Psychological entropy: a framework for understanding uncertainty-related anxiety.

Abstract: Entropy, a concept derived from thermodynamics and information theory, describes the amount of uncertainty and disorder within a system. Self-organizing systems engage in a continual dialogue with the environment and must adapt themselves to changing circumstances to keep internal entropy at a manageable level. We propose the entropy model of uncertainty (EMU), an integrative theoretical framework that applies the idea of entropy to the human information system to understand uncertainty-related anxiety. Four major tenets of EMU are proposed: (a) Uncertainty poses a critical adaptive challenge for any organism, so individuals are motivated to keep it at a manageable level; (b) uncertainty emerges as a function of the conflict between competing perceptual and behavioral affordances; (c) adopting clear goals and belief structures helps to constrain the experience of uncertainty by reducing the spread of competing affordances; and (d) uncertainty is experienced subjectively as anxiety and is associated with activity in the anterior cingulate cortex and with heightened noradrenaline release. By placing the discussion of uncertainty management, a fundamental biological necessity, within the framework of information theory and self-organizing systems, our model helps to situate key psychological processes within a broader physical, conceptual, and evolutionary context.

A multi-model assessment of pollution transport to the Arctic

Abstract: We examine the response of Arctic gas and aerosol concentrations to perturbations in pollutant emissions from Europe, East and South Asia, and North America using re- sults from a coordinated model intercomparison. These sen- sitivities to regional emissions (mixing ratio change per unit emission) vary widely across models and species. Intermodel differences are systematic, however, so that the relative im- portance of different regions is robust. North America con- tributes the most to Arctic ozone pollution. For aerosols

The Effectiveness of Business Codes: A Critical Examination of Existing Studies and the Development of an Integrated Research Model

Abstract: Business codes are a widely used management instrument. Research into the effectiveness of business codes has, however, produced conflicting results. The main reasons for the divergent findings are: varying definitions of key terms; deficiencies in the empirical data and methodologies used; and a lack of theory. In this paper, we propose an integrated research model and suggest directions for future research.