Cantilever-based Resonant Gas Sensors with Integrated Recesses for Localized Sensing Layer Deposition

This work presents mass-sensitive hammerhead resonators with integrated recesses as a gas-phase chemical microsensor platform. Recesses are etched into the head region of the resonator to locally deposit chemically sensitive polymers by ink-jet printing. This permits the sensing films to be confined to areas that (a) are most effective in detecting mass loading and (b) are not strained during the in-plane vibrations of the resonator. As a result of the second point, even 5-μm thick polymer coatings on resonators with a 9-12 μm silicon thickness barely affect the Q-factor in air. This translates into higher frequency stability and ultimately higher sensor resolution compared to uniformly coated devices

Sustainable festival populations: An application of organizational ecology

This article addresses the sustainability of festival populations from the perspective of organizational ecology theory, and in particular age and density dependence. Data from whole populations of festivals in three Norwegian counties are examined. Analyses of festival start-ups demonstrate that the number of events in each county had risen faster than population growth before plateauing, and changes were correlated significantly with trends in the Norwegian gross domestic product. Data on festival age, theme, and other variables were also considered in the light of whole population dynamics. It is concluded that the fundamental tenets of density dependence theory were empirically demonstrated insofar as rapid growth in the festival populations was not sustainable when resources diminished, but no data were available on festival failures. It appears that the hypothetical legitimation of festivals helps to explain rapid growth, as festivals have become popular instruments of public policy. Implications are drawn for future whole population studies and for policy makers who would seek to manage portfolios or whole populations of festivals

Halliwick-Based Aquatic Assessments : Reliability and Validity

Purpose: To investigate the reliability and validity of 2 aquatic functional assessment tests (Water Orientation Test of Alyn 1 and 2: WOTA1, WOTA2) for evaluating adjustment and functional ability in the aquatic environment based on the Halliwick concept. Methods: Thirty-two children with disabilities participated in the reliability study. Thirty-three other children participated in the validity study, which tested the correlations between the WOTA total score and motor performance on land. Results: Test-retest reliability for total score was found to be excellent for both WOTA1 (ICC = .97) and WOTA2 (ICC = 0.93, 0.97). The reliability for most of the individual item scores was fair to good (kappa \u3e 0.4). A positive moderately significant association was found between the WOTA total score and motor performance on land. Conclusion: Both assessments appear to be reliable and valid instruments for assessing mental adjustment and aquatic function in children with disabilities

Suite of simple metrics reveals common movement syndromes across vertebrate taxa

ecause empirical studies of animal movement are most-often site- and species-specific, we lack understanding of the level of consistency in movement patterns across diverse taxa, as well as a framework for quantitatively classifying movement patterns. We aim to address this gap by determining the extent to which statistical signatures of animal movement patterns recur across ecological systems. We assessed a suite of movement metrics derived from GPS trajectories of thirteen marine and terrestrial vertebrate species spanning three taxonomic classes, orders of magnitude in body size, and modes of movement (swimming, flying, walking). Using these metrics, we performed a principal components analysis and cluster analysis to determine if individuals organized into statistically distinct clusters. Finally, to identify and interpret commonalities within clusters, we compared them to computer-simulated idealized movement syndromes representing suites of correlated movement traits observed across taxa (migration, nomadism, territoriality, and central place foraging)

A Review of Web-Based Job Advertisements for Australian Event Management Positions

Strong growths in the Australian event management industry, ongoing technological changes and the internationalisation of the market place has spurred the need for appropriately educated and trained event managers and for a re-evaluation of educational and job training curriculum to meet these new challenges. In order for Australia to position itself as a world leader in event management, it is important to provide consistent high professional standards and event managers that not only meet, but exceed the demands of the industry. While there is some literature that focuses on the tourism and leisure job market (Crossley, 1992; Keung & Pine, 2000), and a small but developing literature base that focuses on event management training (Harris & Jago, 1999; Hawkins & Goldbatt, 1995) relatively little consideration has been given to a national agenda for event management skilling. To provide an indication of current employer requirements, a nationwide study of job advertisements in event management has commenced. The aims of the study are to further the understanding of the educational needs and training requirements of the industry; to ascertain the learned skills and personal attributes sought from event managers; to determine the compatibility of industry demands with current educational and vocational provisions; and to suggest post-secondary institutional avenues through which event management education and training needs can be pursued. This is an ongoing study and it is hoped that it will contribute towards a broad scale understanding of the event management job market. More importantly however, it can be used as the basis for curriculum evaluation and training needs, and create a better understanding and compatibility between event management education and industry practice. This paper reports the preliminary results from a content analysis of approximately 100 web-based job advertisements. Email alert accounts were established with several search engines to gather a sample of event management related job advertisements from around Australia. An analytical framework was devised for the analysis of the advertisements themselves. The results reveal several interesting trends including the geographical concentration of the event management job market, the range of industries that require event management specialists or event management skills, and a series of required skills and key attributes of event managers. The results of this study establish a platform from which to develop a classification of event management skills required by the industry

Planning and Leveraging Event Portfolios: Towards a Holistic Theory

This conceptual paper seeks to advance the discourse on the leveraging and legacies of events by examining the planning, management, and leveraging of event portfolios. This examination shifts the common focus from analyzing single events towards multiple events and purposes that can enable cross-leveraging among different events in pursuit of attainment and magnification of specific ends. The following frameworks are proposed: (1) event portfolio planning and leveraging, and (2) analyzing events networks and inter-organizational linkages. These frameworks are intended to provide, at this infancy stage of event portfolios research, a solid ground for building theory on the management of different types and scales of events within the context of a portfolio aimed to obtain, optimize and sustain tourism, as well as broader community benefits

Designing a Regional System of Social Indicators to Evaluate Nonpoint Source Water Projects

A collaborative team has developed a system to measure the social outcomes of nonpoint source water projects as indicators of progress towards environmental goals. The system involves a set of core indicators, additional supplemental indicators, and a process for collecting and using the indicators. This process is supported by methodologies and instruments for data collection, analysis, and reporting that are coordinated and supported through detailed written guidance and an on-line data management tool. Its multi-state scope and application offer a unique opportunity to target, measure, and report interim resource management accomplishments consistently at multiple levels

Disease and the Dynamics of Food Webs

What models and statistical tools can best help us assess how ecosystems respond to the impact of multiple factors, such as disease, predation, fire, and rain