A proposed governance model for the adoption of geoparks in Australia

Purpose Good governance is crucial in establishing and managing geoparks and is a requirement by UNESCO if global status is to be achieved. Australia has three levels of government, government agencies and not for profit organisations that can assist in the reintroduction of geoparks to Australia. This paper examines a range of governance models used by UNESCO Global Geoparks. Design/methodology/approach This paper explores mechanisms that could be applied in the reintroduction of geoparks into Australia and considers how future geoparks might be managed. The suggested model is based on a review of existing UNESCO Global Geopark governance and their management structures. Findings This paper reviews the opportunities for engaging with Australian organisational stakeholders to support geoparks and proposes a model that would be suitable for adoption in Australia. Originality/value This paper examines a range of governance models applied to geopark development. It reviews the opportunities for engaging with Australian organisational stakeholders to support geoparks and proposes a model that would be suitable for adoption in Australia. Such an account has not previously been undertaken nor a satisfactory model proposed for the Australian situation. This is the first time that a comprehensive model for geopark governance has been proposed for Australia

Geoparks – learnings from Australia

Purpose This study aims to provide an overview of the current socio-political geopark situation in Australia and set this into a global context. In addition, the authors consider this information to be useful for all stakeholders involved in geopark research and development. An analysis of constraints is set alongside stakeholder views collected from remote rural Western Australia. The authors also place Australia in a global context in regard to the future of geoparks. Design/methodology/approach Vital contextual information regarding the tourism significance of geoparks is sourced from key literature. The authors analyse and report on the situation surrounding the current lack of enthusiasm for the geopark concept by the federal government and states in Australia. The authors also report positive rural community stakeholder views on geopark development from regional Western Australia. Findings While Australian federal, as well as state governments have yet to accept geoparks, stakeholder research in Western Australia supports the idea of geopark development. Learnings articulated in this viewpoint are relevant to any country pursuing and initiating the geopark concept. The authors posit that global geopark development can become a vital strategy in post-COVID-19 tourism recovery planning. Originality/value Australia currently does not have a United Nations Educational, Scientific and Cultural Organisation (UNESCO)-recognised geopark. Accordingly, the authors present a case for geopark development, while at the same time exploring the socio-political reasons behind the lack of geopark implementation in Australia. The authors consider the future of geoparks in the global context and reiterate the point that geoparks are important for COVID-19 recovery of tourism and in regard to UNESCO's Sustainable Development Goals for 2030

Cold Atom Physics Using Ultra-Thin Optical Fibers: Light-Induced Dipole Forces and Surface Interactions

The strong evanescent field around ultra-thin unclad optical fibers bears a high potential for detecting, trapping, and manipulating cold atoms. Introducing such a fiber into a cold atom cloud, we investigate the interaction of a small number of cold Caesium atoms with the guided fiber mode and with the fiber surface. Using high resolution spectroscopy, we observe and analyze light-induced dipole forces, van der Waals interaction, and a significant enhancement of the spontaneous emission rate of the atoms. The latter can be assigned to the modification of the vacuum modes by the fiber.Comment: 4 pages, 4 figure

Measurement of Photon Statistics with Live Photoreceptor Cells

We analyzed the electrophysiological response of an isolated rod photoreceptor of Xenopus laevis under stimulation by coherent and pseudo-thermal light sources. Using the suction electrode technique for single cell recordings and a fiber optics setup for light delivery allowed measurements of the major statistical characteristics of the rod response. The results indicate differences in average responses of rod cells to coherent and pseudo-thermal light of the same intensity and also differences in signal-to-noise ratios and second order intensity correlation functions. These findings should be relevant for interdisciplinary studies seeking applications of quantum optics in biology.Comment: 6 pages, 7 figure

Quantum reflection of atoms from a solid surface at normal incidence

We observed quantum reflection of ultracold atoms from the attractive potential of a solid surface. Extremely dilute Bose-Einstein condensates of ^{23}Na, with peak density 10^{11}-10^{12}atoms/cm^3, confined in a weak gravito-magnetic trap were normally incident on a silicon surface. Reflection probabilities of up to 20 % were observed for incident velocities of 1-8 mm/s. The velocity dependence agrees qualitatively with the prediction for quantum reflection from the attractive Casimir-Polder potential. Atoms confined in a harmonic trap divided in half by a solid surface exhibited extended lifetime due to quantum reflection from the surface, implying a reflection probability above 50 %.Comment: To appear in Phys. Rev. Lett. (December 2004)5 pages, 4 figure

Effect of an atom on a quantum guided field in a weakly driven fiber-Bragg-grating cavity

We study the interaction of an atom with a quantum guided field in a weakly driven fiber-Bragg-grating (FBG) cavity. We present an effective Hamiltonian and derive the density-matrix equations for the combined atom-cavity system. We calculate the mean photon number, the second-order photon correlation function, and the atomic excited-state population. We show that, due to the confinement of the guided cavity field in the fiber cross-section plane and in the space between the FBG mirrors, the presence of the atom in the FBG cavity can significantly affect the mean photon number and the photon statistics even though the cavity finesse is moderate, the cavity is long, and the probe field is weak.Comment: Accepted for Phys. Rev.

Tales from the playing field: black and minority ethnic students' experiences of physical education teacher education

This article presents findings from recent research exploring black and minority ethnic (BME) students’ experiences of Physical Education teacher education (PETE) in England (Flintoff, 2008). Despite policy initiatives to increase the ethnic diversity of teacher education cohorts, BME students are under-represented in PETE, making up just 2.94% of the 2007/8 national cohort, the year in which this research was conducted. Drawing on in-depth interviews and questionnaires with 25 BME students in PETE, the study sought to contribute to our limited knowledge and understanding of racial and ethnic difference in PE, and to show how ‘race,’ ethnicity and gender are interwoven in individuals’ embodied, everyday experiences of learning how to teach. In the article, two narratives in the form of fictional stories are used to present the findings. I suggest that narratives can be useful for engaging with the experiences of those previously silenced or ignored within Physical Education (PE); they are also designed to provoke an emotional as well as an intellectual response in the reader. Given that teacher education is a place where we should be engaging students, emotionally and politically, to think deeply about teaching, education and social justice and their place within these, I suggest that such stories of difference might have a useful place within a critical PETE pedagogy

Goodwill Impairment: A New Window For Earnings Management?

The Financial Accounting Standards Board promulgated standard No. 142 in an attempt to improve the understandability of accounting information.  This new rule eliminated the practice of automatically amortizing goodwill.  No. 142 requires public companies to test goodwill for possible impairment at least annually.  An unintended consequence of this new standard is the opportunity for companies to use it in earnings management.  To test the possibility that the rule is being used for this purpose, a sample of companies was chosen, all of which had amounts of goodwill on their balance sheet during the 2003-2005 interval.  The results reveal that the number of companies experiencing losses or low rates of return on total assets who actually impaired goodwill was statistically insignificant during the period under consideration.  Thus, the results strongly suggest that companies are using No. 142 in an attempt to manage the volatility of earnings. &nbsp

Entangled Light in Moving Frames

We calculate the entanglement between a pair of polarization-entangled photon beams as a function of the reference frame, in a fully relativistic framework. We find the transformation law for helicity basis states and show that, while it is frequency independent, a Lorentz transformation on a momentum-helicity eigenstate produces a momentum-dependent phase. This phase leads to changes in the reduced polarization density matrix, such that entanglement is either decreased or increased, depending on the boost direction, the rapidity, and the spread of the beam.Comment: 4 pages and 3 figures. Minor corrections, footnote on optimal basis state

Microcavities coupled to multilevel atoms

A three-level atom in the $\Lambda$-configuration coupled to a microcavity is studied. The two transitions of the atom are assumed couple to different counterpropagating mode pairs in the cavity. We analyze the dynamics both, in the strong-coupling and the bad cavity limit. We find that compared to a two-level setup, the third atomic state and the additional control field modes crucially modify the system dynamics and enable more advanced control schemes. All results are explained using appropriate dressed state and eigenmode representations. As potential applications, we discuss optical switching and turnstile operations and detection of particles close to the resonator surface.Comment: 14 pages, 9 figure