463 research outputs found

    Increasing Chinese Tourist Gamblers in Macao: Crucial Player Characteristics to Identify and Exploit

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    Casinos are today considered major tourist attractions and are a strategic component in the development of a tourism destination. Tourist gamblers are an important market segment providing a reliable source of revenue for casinos. It is necessary to understand the characteristics of these gamblers and to design services and products that cater for their needs. In this study a survey of 402 Chinese tourist gamblers indicated that they have distinctive characteristics, gambling motivations, behaviors and preferences that must be considered and catered to for depth of understanding and devising ways to attract, keep and increase these important customers. Management and marketing implications for local casino operators and destination marketers are drawn

    Smooth, undisturbed dwarf spheroidal galaxies in the Perseus Cluster core: Implications for dark matter content

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    Using deep HST/ACS observations of the core of the Perseus Cluster, we identify a large population of dwarf elliptical galaxies down to M_V = -12. All these dwarfs are remarkably smooth in appearance, showing no evidence for internal features that could be the result of tidal processes or star formation induced by the cluster potential. Based on these observations and the relatively large sizes of these dwarfs, we argue that at least some must have a large dark matter component to prevent their disruption by the cluster potential. We further derive a new method to quantify the dark matter content of cluster dSphs without the use of kinematics, which are impossible to obtain at these distances. We find that mass-to-light ratios for dwarfs in the core of the Perseus Cluster are comparable to those found for Local Group dSphs, ranging between M/L ~ 1 and 120. This is evidence that dwarf spheroidals reside in dark matter subhalos that protect them from tidal processes in the cores of dense clusters.Comment: 4 pages, 3 figures, to be published in Astronomische Nachrichten (proceedings of Symposium 6 of JENAM 2008, Vienna

    Developing the practice of pre-service physical education teachers through a dyad model of lesson study

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    This article reports on a dyad model of lesson study aimed at scaffolding the theory and practice of learning to teach physical education. Participants were pre-service teachers (PSTs) completing a 38-week Master’s-level Postgraduate Certificate in Education in eastern England, training to teach the secondary age range (11–18 years). A total of 40 PSTs volunteered to participate in the study during their school-based training. A three-year cross-sectional case-study framework involving three distinct cohorts of PSTs allowed for a comparison of data, captured through computer-mediated communication. Dialogue through email communications and electronic evaluations was analysed inductively. Three substantive themes were identified as a result of the PSTs’ experiences: (a) developing confidence in the classroom through collaboration with a peer; (b) developing physical education pedagogies to support students’ individual learning needs; and (c) developing physical education pedagogies to support assessment of students’ progress. The dyad lesson study model provided a safe and non-hierarchical platform for collaboration between PSTs. Peer-to-peer reflection on aspects of their own practice instilled confidence and enhanced understanding, particularly in relation to understanding students’ individual learning needs to promote progress and assessing such progress. Dyad lesson study positively supported PSTs’ professional development against prescribed Teachers’ Standards beyond the formal hierarchical rules and structures associated with the school-based training process. Such collaborative conversations can help to minimise professional isolation for PSTs during their school-based training and address the juxtaposition of connecting the theory of learning to teach with a holistic view of student learning in practice

    Hubble Space Telescope survey of the Perseus Cluster - I: The structure and dark matter content of cluster dwarf spheroidals

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    We present the results of a Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) study of dwarf galaxies in the core of the rich nearby Perseus Cluster, down to M_V=-12. We identify 29 dwarfs as cluster members, 17 of which are previously unstudied. All the dwarfs we examine are remarkably smooth in appearance, and lack internal features. Based on these observations, and the sizes of these dwarfs, we argue that some of the dwarfs in our sample must have a large dark matter content to prevent disruption by the cluster potential. We derive a new method, independent of kinematics, for measuring the dark matter content of dEs, based on the radius of the dwarf, the projected distance of the dwarf from the cluster centre, and the total mass of the cluster interior to it. We find that the mass-to-light ratios of these dwarfs are comparable to those of the Local Group dSphs, ranging between 1 and 120.Comment: accepted for publication by MNRA

    Social impacts of casino gaming in Macao: A qualitative analysis

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    The casino gaming sector has witnessed rapid growth worldwide in the past three decades. As the casino industry has been developing rapidly, it is important to understand the pros and cons of casino development and seek ways to minimize the potential negative impacts. This study investigates the social consequences of casino gaming in Macao since the liberalization of casino licensing in 2002, using a qualitative research method. The results reveal that the expansion of casino gaming did bring certain social benefits to the community, such as increased personal incomes and improvement in the city\u27s financial power, landscape, infrastructure and facilities, and the enlargement of entertainment and recreation facilities. There were also many negative social costs, including; uncontrolled urban development, reduction of public leisure and green spaces, heavy traffic and traffic congestion, a high drop-out rate among school students, increase in problem gambling and crime, increased demand for counselling services and public health treatment, deteriorating quality of life and finally the difficulties of many small and medium-sized businesses in competing with the larger casino businesses. The results indicate that the challenges outweigh the benefits. Policy implications for destination managers in Macao and in other locales intending to open casinos are offered

    On the metallicity dependence of HMXBs

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    It is commonly assumed that high mass X-ray binary (HMXB) populations are little-affected by metallicity. However, the massive stars making up their progenitor systems depend on metallicity in a number of ways, not least through their winds. We present simulations, well-matched to the observed sample of Galactic HMXBs, which demonstrate that both the number and the mean period of HMXB progenitors can vary with metallicity, with the number increasing by about a factor of three between solar and SMC metallicity. However, the SMC population itself cannot be explained simply by metallicity effects; it requires both that the HMXBs observed therein primarily sample the older end of the HMXB population, and that the star formation rate at the time of their formation was very large.Comment: 13 pages, 6 figures, MNRAS accepte
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