Disasters affecting infrastructure, such as the 2001 earthquakes in India, 2005 in Pakistan, 2008 in China and the 2004 tsunami in Asia, provide a common need for intelligent buildings and smart civil structures. Now, imagine massive... more
Disasters affecting infrastructure, such as the 2001 earthquakes in India, 2005 in Pakistan, 2008 in China and the 2004 tsunami in Asia, provide a common need for intelligent buildings and smart civil structures. Now, imagine massive reductions in time to get the infrastructure ...
Research Interests: Remote Sensing, User Interface, Energy Consumption, INTELLIGENT BUILDING, World Wide Web, and 10 moreAd hoc network, Wireless Sensor, Real-Time Data Processing, Computer Modeling and Simulation, Spatial Correlation, Wireless Sensor Network, Sensor nodes, Data Transmission, Sensor deployment, and Real Time Data
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Sea level has been rising at close to the upper end of the IPCC Third Assessment Report (and AR4) projections. Despite the importance of sea-level rise, the last two IPCC reports have not been able to satisfactorily close the se-level... more
Sea level has been rising at close to the upper end of the IPCC Third Assessment Report (and AR4) projections. Despite the importance of sea-level rise, the last two IPCC reports have not been able to satisfactorily close the se-level budget. Here, we present updated estimates of the observed rate of rise from both satellite altimeter and in situ observations.
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AbstractWe present calibration results from Jason-1 and TOPEX/POSEIDON overflights of the three dedicated verifica-tion sites: 1) a California offshore oil platform (Harvest); 2) the Mediterranean island of Corsica (Cape Senetosa), and... more
AbstractWe present calibration results from Jason-1 and TOPEX/POSEIDON overflights of the three dedicated verifica-tion sites: 1) a California offshore oil platform (Harvest); 2) the Mediterranean island of Corsica (Cape Senetosa), and 3) the Bass Strait off the coast of Tasmania. The ...
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This experiment investigated the ability of rats with dorsal striatal or fornix damage to learn the location of a visible platform in a water maze. We also assessed the animals' ability to find the platform when it was hidden... more
This experiment investigated the ability of rats with dorsal striatal or fornix damage to learn the location of a visible platform in a water maze. We also assessed the animals' ability to find the platform when it was hidden (submerged). Rats with neurotoxic damage to the dorsal striatum acquired both the visible and hidden platform versions of the task, but when required to choose between the spatial location they had learned and the visible platform in a new location they swam first to the old spatial location. Rats with radio-frequency damage to the fornix acquired the visible platform version of the water maze task but failed to learn about the platform's location in space. When the visible platform was moved to a new location they swam directly to it. Normal rats acquired both the visible and hidden platform versions of the task. These findings suggest that in the absence of a functional neural system that includes dorsal striatum, spatial information predominantly con...
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During Cenozoic times, permanent uplift was generated by magmatic underplating when the North Atlantic ocean opened over the Iceland plume. Geochemical and petrological arguments show that much of this melt crystallised at Moho depths.... more
During Cenozoic times, permanent uplift was generated by magmatic underplating when the North Atlantic ocean opened over the Iceland plume. Geochemical and petrological arguments show that much of this melt crystallised at Moho depths. However beneath the British Isles, the existence of magmatic underplating is debated and its spatial extent is poorly known. Evidence also exists for transient uplift at
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Sea level has been rising at close to the upper end of the IPCC Third Assessment Report (and AR4) projections. Despite the importance of sea-level rise, the last two IPCC reports have not been able to satisfactorily close the se-level... more
Sea level has been rising at close to the upper end of the IPCC Third Assessment Report (and AR4) projections. Despite the importance of sea-level rise, the last two IPCC reports have not been able to satisfactorily close the se-level budget. Here, we present updated estimates of the observed rate of rise from both satellite altimeter and in situ observations.
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We present direct measurements of the limb-darkened intensity profiles of the late-type giant stars HR 5299, HR 7635, and HR 8621 obtained with the Navy Prototype Optical Interferometer (NPOI) at the Lowell Observatory. A triangle of... more
We present direct measurements of the limb-darkened intensity profiles of the late-type giant stars HR 5299, HR 7635, and HR 8621 obtained with the Navy Prototype Optical Interferometer (NPOI) at the Lowell Observatory. A triangle of baselines with lengths of 18.9 m, 22.2 m, and 37.5 m was used. We utilized squared visibility amplitudes beyond the first minimum, as well
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Research Interests: Climate Change, Climate variability, Risk and Vulnerability, Integrated assessment, Risk assessment, and 21 moreSensitivity Analysis, Multidisciplinary, Global change, Impact Assessment, Case Study, Economic Impact, Cost effectiveness, Australian cattle industry, New South Wales, Climatic Change, Beef Cattle, Population Model, Control Strategy, Spatial Data, Economic Model, Risk Assessment, Bottom Up, Top Down, Geographic Information System, Rhipicephalus (Boophilus) microplus, and Current Distribution
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The Navy Prototype Optical Interferometer is a four element astrometric interferometer and a six element imaging interferometer presently under fabrication at Anderson Mesa, Arizona. It is a cooperative project between the United States... more
The Navy Prototype Optical Interferometer is a four element astrometric interferometer and a six element imaging interferometer presently under fabrication at Anderson Mesa, Arizona. It is a cooperative project between the United States Naval Observatory, the Naval Research Laboratory and Lowell Observatory. The plans and progress made in fabricating the instrument will be described along with some of the scientific
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High integrity applications, such as those performing safety or secu- rity critical functions, are usually built to conform to standards such RTCA DO- 178B (1) or UK Def Stan 00-55 (2). Typically such standards define ascending levels of... more
High integrity applications, such as those performing safety or secu- rity critical functions, are usually built to conform to standards such RTCA DO- 178B (1) or UK Def Stan 00-55 (2). Typically such standards define ascending levels of criticality each of which requires a different and increasingly onerous level of verification. It is very common to find that real systems contain code of multiple criticality levels. For example, a critical control system may generate a non-critical usage log. Unless segregation can be demonstrated to a very high degree of confidence, there is usually no alternative to verifying all the software components to the standard required by the most critical element, leading to an increase in overall cost. This paper describes the novel use of static analysis to provide a robust segregation of differing criticality levels, thus allowing appro- priate verification techniques to be applied at the subprogram level. We call this fine-grained matching of verification level to subprogram criticality smart certi- fication.
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The notion of matroid has been generalized to Coxeter matroid by Gelfand and Serganova. To each pair (W, P) consisting of a finite irreducible Coxeter group W and parabolic subgroup P is associated a collection of objects called Coxeter... more
The notion of matroid has been generalized to Coxeter matroid by Gelfand and Serganova. To each pair (W, P) consisting of a finite irreducible Coxeter group W and parabolic subgroup P is associated a collection of objects called Coxeter matroids. The (ordinary) matroids are the special case where W is the symmetric group (the An case) and P is a maximal parabolic subgroup.This generalization of matroid introduces interesting combinatorial structures corresponding to each of the finite Coxeter groups. Borovik, Gelfand and White began an investigation of the Bn case, called symplectic matroids. This paper initiates the study of the Dn case, called orthogonal matroids. The main result (Theorem 2) gives three characterizations of orthogonal matroid: algebraic, geometric, and combinatorial. This result relies on a combinatorial description of the Bruhat order on Dn (Theorem 1). The representation of orthogonal matroids by way of totally isotropic subspaces of a classical orthogonal space...
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Abstract Clinical signs are useful in determining the level of overt disease. However, neither the complement fixation test, nor the presence of clinical signs of disease are appropriate measures for the detection of Chlamydia psittaci in... more
Abstract Clinical signs are useful in determining the level of overt disease. However, neither the complement fixation test, nor the presence of clinical signs of disease are appropriate measures for the detection of Chlamydia psittaci in koalas because of false negative rates of 43 and 57%, respectively. Infection due to C. psittaci was most accurately determined in a population of koalas in rural south-east Queensland by in vitro cell culture of samples from ocular and urogenital sites. Prevalence of infection ranged from 39 to 61% with no ...
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Abstract Subadult koalas were returned to the wild after 2 months in captivity. These animals were fitted with radio collars and released among a population of koalas in which the movements of 30 individual were being monitored by radio... more
Abstract Subadult koalas were returned to the wild after 2 months in captivity. These animals were fitted with radio collars and released among a population of koalas in which the movements of 30 individual were being monitored by radio tracking. For the first 30 days after release, movements of the rehabilitated koalas were monitored daily, thereafter biweekly. The movement pattern of females after release was characterised by remaining within the study area. In contrast, the males showed a progressive movement away from ...
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Abstract This study investigated home-range size, utilisation of tree species and patches, and the influence of spacing behaviour by females on social organisation. It was undertaken in south-east Queensland in an area dominated by... more
Abstract This study investigated home-range size, utilisation of tree species and patches, and the influence of spacing behaviour by females on social organisation. It was undertaken in south-east Queensland in an area dominated by agricultural activity (beef and dairy cattle and cropping). Extensive clearing in the study area resulted in patches of vegetation that varied in size from less that 1 ha to blocks of 50–100 ha. Eucalyptus tereticornis and E. crebra were the dominant species in these patches and koalas used both species. The ...
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Research Interests: Microbiology, Veterinary Microbiology, Australia, Chlamydia pneumoniae, Disease Outbreaks, and 16 moreFemale, Animals, Male, Polymerase Chain Reaction, Statistical Significance, Chlamydia, Prevalence, Marsupialia, Sex Factors, Captive Wild Animals, Age Factors, Veterinary Sciences, Sensitivity and Specificity, Clinical Signs, Age Groups, and Epizootiology
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... 1974; Mozurkewich et al. 1991, 1997; Hutter et al. 1989; Mourard et al. 1997; Vakili et al. ... With the appropriate choice of short baseline lengths for the star being observed, the longest baselines can provide data beyond the first... more
... 1974; Mozurkewich et al. 1991, 1997; Hutter et al. 1989; Mourard et al. 1997; Vakili et al. ... With the appropriate choice of short baseline lengths for the star being observed, the longest baselines can provide data beyond the first zero. We name this technique phase bootstrapping. ...
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... 1998, ApJ, 496, 550 First citation in article | Abstract at Astrophysics Data System | IOP Article | CrossRef link; Baldwin, JE, et al. ... Hummel, CA, Mozurkewich, D., Armstrong, JT, Hajian, AR, Elias, NM, II, & Hutter, DJ 1998,... more
... 1998, ApJ, 496, 550 First citation in article | Abstract at Astrophysics Data System | IOP Article | CrossRef link; Baldwin, JE, et al. ... Hummel, CA, Mozurkewich, D., Armstrong, JT, Hajian, AR, Elias, NM, II, & Hutter, DJ 1998, AJ, 116, 2536 First citation in article | Abstract at ...
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ABSTRACT We have measured the angular diameters of 50 F, G, K, and M giant and supergiant stars using the Navy Prototype Optical Interferometer at wavelengths between 649 and 850 nm and using three base-lines with lengths up to 37.5 m.... more
ABSTRACT We have measured the angular diameters of 50 F, G, K, and M giant and supergiant stars using the Navy Prototype Optical Interferometer at wavelengths between 649 and 850 nm and using three base-lines with lengths up to 37.5 m. Uniform-disk diameters, obtained ...
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A symplectic matroid is a collection B of k-element subsets of J = {1, 2, ..., n, 1*, 2*, ...; n*}, each of which contains not both of i and i* for every i = n, and which has the additional property that for any linear ordering ? of J... more
A symplectic matroid is a collection B of k-element subsets of J = {1, 2, ..., n, 1*, 2*, ...; n*}, each of which contains not both of i and i* for every i = n, and which has the additional property that for any linear ordering ? of J such that i ? j implies j* ? i* and i ? j* implies j ? i* for all i, j = n, B has a member which dominates element-wise every other member of B. Symplectic matroids are a special case of Coxeter matroids, namely the case where the Coxeter group is the hyperoctahedral group, the group of symmetries of the n-cube. In this paper we develop the basic properties of symplectic matroids in a largely self-contained and elementary fashion. Many of these results are analogous to results for ordinary matroids (which are Coxeter matroids for the symmetric group), yet most are not generalizable to arbitrary Coxeter matroids. For example, representable symplectic matroids arise from totally isotropic subspaces of a symplectic space very similarly to the way in which...
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Abstract The yolk protein genes (yps) of Drosophila melanogaster are only expressed in the ovary and fat body of female flies if they are supplied with pro-teinaceous food. This nutritional response is specific to the yp genes. We have... more
Abstract The yolk protein genes (yps) of Drosophila melanogaster are only expressed in the ovary and fat body of female flies if they are supplied with pro-teinaceous food. This nutritional response is specific to the yp genes. We have used transgenic flies transformed with a ...
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A review of thick-film sensors is presented. The evolution of the technology to a successful enabling mechanism for solid-state sensors is described. Many examples of applications in the major signal domains (mechanical, radiant, thermal,... more
A review of thick-film sensors is presented. The evolution of the technology to a successful enabling mechanism for solid-state sensors is described. Many examples of applications in the major signal domains (mechanical, radiant, thermal, magnetic and chemical) are cited. ...