A note on the central limit theorem for a one-sided reflected Ornstein-Uhlenbeck process

In this short communication we present a (functional) central limit theorem for the idle process of a one-sided reflected Ornstein-Uhlenbeck proces

Preparing for a changing and variable climate: final report to Grape and Wine Research and Development Corporation RT 07/02-2

Climate change has the potential to reshape the Australian wine industry. Regions will be differentially impacted and will respond according to their unique viticultural, environmental, economic and social characteristics. An industry forum and regional workshop series was held in Western Australia focusing on three wine regions: Margaret River, Pemberton and Mount Barker. Fine scale climate information (mesoscale maps) and overviews of current and emerging technologies and resources that can be used by the wine industry to plan for and manage the risks and opportunities resulting from a changing and variable climate were presented. The information indicated that the wine regions in South West Western Australia (SWWA) will remain ideally suited to further viticulture development for the production of high quality grapes and wine in the future. Grape and wine producers identified seven key strategic areas where they will need support in order to manage the impacts of climate change. Producers developed detailed plans for actions they would like to see happen in their regions on climate information and projections, variety suitability and choices, vineyard water resources and water use, and vineyard management. The information outlined in this report has been compiled in collaboration with the specialist speakers at the forum and regional workshops: Prof. Tom Lyons, Murdoch University; Prof. Snow Barlow, Melbourne University; Dr Tony Proffitt, AHA Viticulture; Dr Erika Winter, GrapeLinks; Dr Leanne Webb, CSIRO/Melbourne University; Dr Victor Sadras, South Australian Research and Development Institute; Paul Petrie, Fosters Group; Dr Ian Foster, Department of Agriculture and Food, Western Australia; and Nyamdorj Namjildorj, Curtin University of Technology

Preparing for a changing and variable climate

Climate change has the potential to reshape the Australian wine industry. Regions will be differentially impacted and will respond according to their unique viticultural, environmental, economic and social characteristics. An industry forum and regional workshop series was held in Western Australia focusing on three wine regions: Margaret River, Pemberton and Mount Barker. Fine scale climate information (mesoscale maps) and overviews of current and emerging technologies and resources that can be used by the wine industry to plan for and manage the risks and opportunities resulting from a changing and variable climate were presented. The information indicated that the wine regions in South West Western Australia (SWWA) will remain ideally suited to further viticulture development for the production of high quality grapes and wine in the future. Grape and wine producers identified seven key strategic areas where they will need support in order to manage the impacts of climate change. Producers developed detailed plans for actions they would like to see happen in their regions on climate information and projections, variety suitability and choices, vineyard water resources and water use, and vineyard management. The information outlined in this report has been compiled in collaboration with the specialist speakers at the forum and regional workshops

Measuring the benefits from R&D investment beyond the farm gate: the case of the WA wine industry

Evaluations of public sector agricultural research and development (R&D) often focus on farm level benefits. Flow-on benefits that accrue to other sectors such as processing and marketing typically are ignored. This paper however includes these benefits. Using the Western Australian wine industry as an example this paper highlights the relative importance of farm and flow-on benefits generated by farm-level R&D. A wine industry value chain model is used to measure these benefits. The benefits per dollar of R&D investment are found to be $2.8 at the farm level compared to$14.9 when flow-on benefits are taken into account. In this case, solely reporting farm level benefits hugely understates the returns to the R&D investment. The R&D policy implications of the inclusion of flow-on benefits are discussed briefly.R&D investment, Benefit cost analysis, Value chain modelling, wine.,

A bright future for export plums

Western Australia\u27s stone fruit industry is relatively small by Australian and world standards owing to its small domestic market and past uncertainties with export. However, the industry is expanding to take advantage of growing markets in south-east Asia. It has adopted new production and marketing technology and is developing new varieties to meet the demand. The future for our export plums has never been as promising as it is today. This is linked to fruit quality because markets are fickle and highly sensitive to poor quality fruit. The introduction of a Quality Management Program in 199~91 helped the State develop a reputation for consistent quality compared with other suppliers. Our proximity to these markets means air-freighted plums arrive in the freshest condition, and the short shipping times are much less than our competitors

Selections of the Houghton clones of Cabernet Sauvignon

Cabernet Sauvignon is the premium red wine grape variety grown in Western Australia. The high quality wines produced have won prestigious awards and accolades nationally and internationally. The first clonal selection of Cabernet Sauvignon in Western Australia was conducted by the Department of Agriculture at the Houghton Vineyard in the Swan Valley from 1968 to 1970. The objective was yield improvement, vine health and fruit flavour. Twenty-one high performing vines were identified from vines planted in Houghton Vineyard in the 1950s as cuttings sourced from vines planted in the 1930s. These high performing vines became known as the ‘Houghton clones’. Evaluation trials were planted at Gingin in 1970 and Frankland in 1973.https://researchlibrary.agric.wa.gov.au/bulletins/1055/thumbnail.jp

Common insect pests and diseases on fruit trees in the home garden

Home gardeners frequently see insect pests and diseases affecting their fruit trees. Usually they would have seen them in previous seasons, so the pests or diseases look familiar. However, there are occasions, when an unusual pest (not native to Western Australia) can occur. These exotic pests are a concern for the farming community, as they could threaten the agricultural and horticultural industries and increase the price of production and the cost to the consumer. This bulletin describes the most common insect pests and diseases on fruit trees in home gardens.https://researchlibrary.agric.wa.gov.au/bulletins/1193/thumbnail.jp

Heavy-traffic extreme-value limits for queues

We consider the maximum waiting time among the first n customers in the GI/G/1 queue. We use strong approximations to prove, under regularity conditions, convergence of the normalized maximum wait to the Gumbel extreme-value distribution when the traffic intensity ρ approaches 1 from below and n approaches infinity at a suitable rate. The normalization depends on the interarrival-time and service-time distributions only through their first two moments, corresponding to the iterated limit in which first ρ approaches 1 and then n approaches infinity. We need n to approach infinity sufficiently fast so that n ( 1 − ρ )2 → ∞. We also need n to approach infinity sufficiently slowly: If the service time has a pth moment for ρ > 2, then it suffices for ( 1 − ρ ) n 1 / p to remain bounded; if the service time has a finite moment generating function, then it suffices to have ( 1 − ρ ) log n → 0. This limit can hold even when the normalized maximum waiting time fails to converge to the Gumbel distribution as n → ∞ for each fixed ρ. Similar limits hold for the queue length process

Zephyr: The Thirteenth Issue

This is the thirteenth issue of Zephyr, the University of New England\u27s journal of creative expression. Since 2000, Zephyr has published original drawings, paintings, photography, prose, and verse created by current and former members of the University community. Zephyr\u27s Editorial Board is made up exclusively of matriculating students.https://dune.une.edu/zephyr/1012/thumbnail.jp

Excess Mortality Associated with Antimicrobial Drug-Resistant Salmonella Typhimurium

In a matched cohort study, we determined the death rates associated with drug resistance in Salmonella Typhimurium. We linked data from the Danish Surveillance Registry for Enteric Pathogens with the Civil Registration System and the Danish National Discharge Registry. By survival analysis, the 2-year death rates were compared with a matched sample of the general Danish population, after the data were adjusted for differences in comorbidity. In 2,047 patients with S. Typhimurium, 59 deaths were identified. Patients with pansusceptible strains of S. Typhimurium were 2.3 times more likely to die 2 years after infection than persons in the general Danish population. Patients infected with strains resistant to ampicillin, chloramphenicol, streptomycin, sulfonamide, and tetracycline were 4.8 times (95% CI 2.2 to 10.2) more likely to die, whereas quinolone resistance was associated with a mortality rate 10.3 times higher than the general population