An Economic Comparison of Sheep Grazing Systems on the Northern Tablelands of NSW

Three 54ha "farmlets" were established in 2000 near Uralla, NSW to trial high input, moderate input and intensive rotational grazing systems. A representative farm approach was used to interpret the profitability results of the trial from July 2000 to June 2005 at a commercial scale level to make research results more relevant to farmers. At the gross margin level, the high input farmlet had the highest annual gross margins, but this farmlet had the worst whole farm performance. These contrasting results support the claim that annual activity gross margins cannot alone indicate the profitability of an investment. This demonstrates that whole farm analysis is the most suitable method to assess different grazing systems.sheep, grazing systems, pastures, whole farm analysis, Livestock Production/Industries,

Architectural design principles for extra-terrestrial habitats

No abstract available

State Casket Sales and Restrictions: A Pointless Undertaking?

We utilize a new micro dataset of prices of funeral goods and services at individual funeral homes, plus data from the Census to examine the effects of state regulations that restrict entry into funeral goods market. In particular, some states have regulations that allow only licensed funeral homes to sell caskets, while others allow unlicensed retailers, such as Costco, to compete with funeral homes in the sale of caskets. However, as caskets and funeral services are complements, generally purchased in one-to-one proportions, it is not a priori clear that casket sale restrictions can expand the rent extraction capabilities of licensed funeral homes. Our results suggest that when courts lift funeral goods sales restrictions the prices of funeral goods fall but the prices of funeral services rise by nearly as much. Overall, our results support the "one monopoly rent" hypothesis; we do not find that overall funeral home revenues decline when funeral goods sales are lifted.

The Strategic Positioning of Store Brands in Retailer - Manufacturer Bargaining

We argue in this paper that retailers can strategically position store brands in product space to strengthen their bargaining position when negotiating supply terms with manufacturers of national brands. Using a bargaining framework we model a retailer's decision whether to carry an additional national brand or a store brand, and if the retailer chooses to introduce the latter, where in product space to locate the store brand. Store brands differ from other brands in being both unadvertised and located at a position in product space that is determined by the retailer instead of by a manufacturer. To capture the negotiation effect of store brands empirically, our paper analyses a retailer's choice of whether or not to carry a store brand in a given category. We control for other motivations for carrying a store brand that have been used in the literature. We test our model on a cross-section of categories using supermarket data from multiple retailers. The first contribution of this paper is to show theoretically that the strategic positioning of a store brand in a category changes the bargaining over supply terms between a retailer and national brand manufacturers in that category. The empirical evidence is consistent with the theory. We find that retailers are more likely to carry a store brand in a category if the share of the leading national brand is higher, but that the leading national brand share does not affect the market share of the store brand. This indicates that there may be a bargaining motive for the introduction of the store brand. We propose that this is because the retailer can position the store brand to mimic the leading national brand and present data that shows that store brands frequently imitate national brand packaging on multiple dimensions.

The Distortionary Effects of Government Procurement: Evidence from Medicaid Prescription Drug Purchasing

The federal-state Medicaid program insures 43 million people for virtually all of the prescription drugs approved by the FDA. To determine the price that it will pay for a drug treatment, the government uses the average price in the private sector for that same drug. Assuming that Medicaid recipients are unresponsive to price because of the program's zero co-pay, this rule will increase prices for non-Medicaid consumers. Using drug utilization and expenditure data for the top 200 drugs in 1997 and in 2002, we investigate the relationship between the Medicaid market share (MMS) and the average price of a prescription. Our findings suggest that the Medicaid rules substantially increase equilibrium prices for non-Medicaid consumers. Specifically, a ten percentage-point increase in the MMS is associated with a ten percent increase in the average price of a prescription. This result is robust to the inclusion of controls for a drug's therapeutic class, the existence of generic competition, the number of brand competitors, and the years since the drug entered the market. We also demonstrate that the Medicaid rules increase a firm's incentive to introduce new versions of a drug at higher prices and find empirical evidence in support of this for drugs that do not face generic competition. Taken together, our findings suggest that government procurement can have an important effect on equilibrium prices in the private sector.

Electronically Assisting Communication for Health Professionals

New information and computing technologies offer cost efficient and effective learning opportunities for health care professionals. The Assisted Electronic Communication project is prototyping, administering and evaluating a digital discourse system for health care professionals within an acute Hospital. Health care staff participating in the study are able to access and contribute to threaded, asynchronous discussions and themed information in the context of critical work documents. Early indications are that the system is viewed very positively, and seen as a way of critically engaging with new material that is getting closer to an idealized learning in the workplace

Development of PKN2 chemical probes to enable drug discovery

EMBARGOED - temporary (awaiting approval

An investigation into the ecological validity of virtual reality measures of planning and prospective memory in adults with acquired brain injury and Clinical research portfolio

Background: Improving the ecological validity of the assessment of executive functioning after brain injury has been an important focus of research in recent years. This study investigates the ecological validity of the “JAAM test”, a novel office-based virtual-reality task, in assessing real-life difficulties post-brain injury in the domains of planning and prospective memory. The comparative ecological validity of two traditional “desktop” tests for these domains and the convergent validity between the measures are also explored. Methods: Forty adults with an acquired brain injury completed the JAAM test, the Tower Test (a test of planning) and the Cambridge Prospective Memory Test (CAMPROMPT). Self and informant versions of questionnaires (the Dysexecutive Questionnaire; DEX) and the Prospective and Retrospective Memory Questionnaire (PRMQ) designed to measure real-life difficulties in these cognitive domains were also completed. Results: Significant correlations were observed between JAAM planning scores and the DEX (r = -.49), as well as between the Tower Test and the DEX (r = -.39). The difference between the strength of these correlations was not significant. Neither the JAAM prospective memory score nor CAMPROMPT scores correlated significantly with the PRMQ. Significant correlations were found between the JAAM and Tower Test (r = .33) and CAMPROMPT (rho = .59). Discussion: Results suggest the JAAM possesses at least similar ecological validity to traditional assessments of planning and prospective memory, and it also has convergent validity with these measures. Implications and limitations of the current study are discussed and recommendations for future research proposed