ORCID Profile
0000-0002-0091-8925
Current Organisation
Griffith University Library
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Pattern Recognition and Data Mining | Artificial Intelligence and Image Processing | Neural, Evolutionary and Fuzzy Computation | Information and Computing Sciences not elsewhere classified |
Environmentally Sustainable Information and Communication Services not elsewhere classified | Social Ethics | Urban and Industrial Water Management | Information Processing Services (incl. Data Entry and Capture)
Publisher: MDPI AG
Date: 17-05-2018
DOI: 10.20944/PREPRINTS201805.0236.V1
Abstract: This paper introduces both a hardware and a software system designed to allow low-cost electronic monitoring of social insects using RFID tags. Data formats for in idual insect identification and their associated experiment are proposed to facilitate data sharing from experiments conducted with this system. The antenna's configuration and their duty cycle ensure a high degree of detection rates. Other advantages and limitations of this system are discussed in detail in the paper.
Publisher: American Geophysical Union (AGU)
Date: 06-01-2006
DOI: 10.1029/2005JE002477
Publisher: IEEE
Date: 05-2010
Publisher: American Society for Cell Biology (ASCB)
Date: 12-2007
Abstract: Cell polarization is necessary for directed migration and leukocyte recruitment to inflamed tissues. Recent progress has been made in defining the molecular mechanisms that regulate chemoattractant-induced cell polarity during chemotaxis, including the contribution of phosphoinositide 3-kinase (PI3K)-dependent phosphatidylinositol (3,4,5)-trisphosphate [PtdIns(3,4,5)P 3 ] synthesis at the leading edge. However, less is known about the molecular composition of the cell rear and how the uropod functions during cell motility. Here, we demonstrate that phosphatidylinositol phosphate kinase type Iγ (PIPKIγ661), which generates PtdIns(4,5)P 2 , is enriched in the uropod during chemotaxis of primary neutrophils and differentiated HL-60 cells (dHL-60). Using time-lapse microscopy, we show that enrichment of PIPKIγ661 at the cell rear occurs early upon chemoattractant stimulation and is persistent during chemotaxis. Accordingly, we were able to detect enrichment of PtdIns(4,5)P 2 at the uropod during chemotaxis. Overexpression of kinase-dead PIPKIγ661 compromised uropod formation and rear retraction similar to inhibition of ROCK signaling, suggesting that PtdIns(4,5)P 2 synthesis is important to elicit the backness response during chemotaxis. Together, our findings identify a previously unknown function for PIPKIγ661 as a novel component of the backness signal that regulates rear retraction during chemotaxis.
Publisher: Elsevier BV
Date: 11-2005
Publisher: American Association for the Advancement of Science (AAAS)
Date: 06-08-2004
Abstract: Mössbauer spectra measured on Mars by the Spirit rover during the primary mission are characterized by two ferrous iron doublets (olivine and probably pyroxene) and a ferric iron doublet (tentatively associated to nanophase ferric iron oxide). Two sextets resulting from nonstoichiometric magnetite are also present, except for a coating on the rock Mazatzal, where a hematite-like sextet is present. Greater proportions of ferric-bearing phases are associated with undisturbed soils and rock surfaces as compared to fresh rock surfaces exposed by grinding. The ubiquitous presence of olivine in soil suggests that physical rather than chemical weathering processes currently dominate at Gusev crater.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2023
Publisher: Informa UK Limited
Date: 09-04-2017
DOI: 10.1080/09593330.2017.1310303
Abstract: This paper presents an approach to the design of environmental sensor networks (ESN) which aims at providing a robust, fit-for-purpose network with minimum redundancy. A set of near optimum ESN designs is sought using an evolutionary algorithm, which incorporates redundancy and robustness as fitness functions. This work can assist the decision-making process when determining the number of sensor nodes and how the nodes are going to be deployed in the region of interest.
Publisher: IEEE
Date: 05-2010
Publisher: Elsevier BV
Date: 11-2013
Publisher: Springer Science and Business Media LLC
Date: 2003
Publisher: American Association for the Advancement of Science (AAAS)
Date: 04-05-2007
Abstract: Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarsegrained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic origin over an impact origin. The lower unit likely represents accumulation of pyroclastic materials, whereas the upper unit may represent eolian reworking of the same pyroclastic materials.
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: American Association for the Advancement of Science (AAAS)
Date: 04-05-2012
Abstract: After more than 7 years of traveling across the Meridiani Planum region of Mars, the Mars Exploration rover Opportunity reached the Endeavour Crater, a 22-km-impact crater made of materials older than those previously investigated by the rover. Squyres et al. (p. 570 ) present a comprehensive analysis of the rim of this crater. Localized zinc enrichments that provide evidence for hydrothermal alteration and gypsum-rich veins that were precipitated from liquid water at a relatively low temperature provide a compelling case for aqueous alteration processes in this area at ancient times.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2022
Publisher: Springer Science and Business Media LLC
Date: 11-2005
Publisher: American Geophysical Union (AGU)
Date: 30-09-2010
DOI: 10.1029/2010JE003633
Publisher: Springer Science and Business Media LLC
Date: 03-10-2020
Publisher: IEEE
Date: 1998
Publisher: Springer Science and Business Media LLC
Date: 11-2012
Publisher: IEEE
Date: 05-2012
Publisher: FapUNIFESP (SciELO)
Date: 09-2010
DOI: 10.1590/S0370-44672010000300002
Abstract: O Museu de Ciência e Técnica da Escola de Minas da Universidade Federal de Ouro Preto possui um fragmento de meteorito metálico com 110,76g denominado Itumirim, encontrado próximo a Itutinga, cidade do interior de Minas Gerais, distante 228km de Belo Horizonte. Realizando-se análises ao microscópio eletrônico de varredura (MEV), determinou-se a classificação estrutural do fragmento Itumirim como octaedrito médio, Om. As fases mineralógicas presentes foram determinadas recorrendo-se às análises com o detector de energia dispersiva de raios X (EDS) acoplado ao MEV e com o espectrômetro Mössbauer miniaturizado, MIMOS II. Esses resultados somados à correlação existente entre classificação estrutural e química permitiram classificar o fragmento Itumirim como pertencente ao grupo IIIAB, a mesma classificação do meteorito Itutinga.
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: MDPI AG
Date: 21-06-2021
Abstract: Males in Hymenopteran societies are understudied in many aspects and it is assumed that they only have a reproductive function. We studied the time budget of male honey bees, drones, using multiple methods. Changes in the activities of animals provide important information on biological clocks and their health. Yet, in nature, these changes are subtle and often unobservable without the development and use of modern technology. During the spring and summer mating season, drones emerge from the hive, perform orientation flights, and search for drone congregation areas for mating. This search may lead drones to return to their colony, drift to other colonies (vectoring diseases and parasites), or simply get lost to predation. In a low percentage of cases, the search is successful, and drones mate and die. Our objective was to describe the activity of Apis mellifera drones during the mating season in Northwestern Argentina using three methods: direct observation, video recording, and radio frequency identification (RFID). The use of RFID tagging allows the tracking of a bee for 24 h but does not reveal the detailed activity of drones. We quantified the average number of drones’ departure and arrival flights and the time outside the hive. All three methods confirmed that drones were mostly active in the afternoon. We found no differences in results between those obtained by direct observation and by video recording. RFID technology enabled us to discover previously unknown drone behavior such as activity at dawn and during the morning. We also discovered that drones may stay inside the hive for many days, even after initiation of search flights (up to four days). Likewise, we observed drones to leave the hive for several days to return later (up to three days). The three methods were complementary and should be considered for the study of bee drone activity, which may be associated with the erse factors influencing hive health.
Publisher: American Geophysical Union (AGU)
Date: 27-01-2006
DOI: 10.1029/2005JE002560
Publisher: American Association for the Advancement of Science (AAAS)
Date: 03-12-2004
Abstract: Mössbauer spectra measured by the Opportunity rover revealed four mineralogical components in Meridiani Planum at Eagle crater: jarosite- and hematite-rich outcrop, hematite-rich soil, olivine-bearing basaltic soil, and a pyroxene-bearing basaltic rock (Bounce rock). Spherules, interpreted to be concretions, are hematite-rich and dispersed throughout the outcrop. Hematitic soils both within and outside Eagle crater are dominated by spherules and their fragments. Olivine-bearing basaltic soil is present throughout the region. Bounce rock is probably an impact erratic. Because jarosite is a hydroxide sulfate mineral, its presence at Meridiani Planum is mineralogical evidence for aqueous processes on Mars, probably under acid-sulfate conditions.
Publisher: Springer Science and Business Media LLC
Date: 13-05-2019
Publisher: IEEE
Date: 10-2009
Publisher: American Geophysical Union (AGU)
Date: 06-2008
DOI: 10.1029/2007JE003041
Publisher: MDPI AG
Date: 02-07-2018
DOI: 10.3390/S18072124
Publisher: IEEE
Date: 05-2010
Publisher: American Geophysical Union (AGU)
Date: 02-2006
DOI: 10.1029/2005JE002516
Publisher: American Geophysical Union (AGU)
Date: 18-04-2008
DOI: 10.1029/2007JE002990
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2023
Publisher: IEEE
Date: 05-2010
Publisher: Elsevier BV
Date: 15-05-2009
Publisher: IEEE
Date: 05-2009
Publisher: IOP Publishing
Date: 09-04-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2018
Publisher: American Geophysical Union (AGU)
Date: 06-01-2006
DOI: 10.1029/2005JE002499
Publisher: IEEE
Date: 05-2009
Publisher: American Geophysical Union (AGU)
Date: 12-2006
DOI: 10.1029/2006JE002795
Publisher: Elsevier BV
Date: 06-2011
Publisher: Springer Science and Business Media LLC
Date: 1998
Publisher: American Geophysical Union (AGU)
Date: 12-2006
DOI: 10.1029/2006JE002791
Publisher: American Geophysical Union (AGU)
Date: 06-01-2006
DOI: 10.1029/2005JE002491
Publisher: Springer Science and Business Media LLC
Date: 15-02-2012
Publisher: IEEE
Date: 12-2012
Publisher: MDPI AG
Date: 03-03-2011
DOI: 10.3390/S110302885
Publisher: Springer Science and Business Media LLC
Date: 08-2005
DOI: 10.1038/NATURE04042
Publisher: MDPI AG
Date: 11-10-2011
DOI: 10.3390/S111009589
Publisher: Elsevier BV
Date: 02-2010
Publisher: ACM
Date: 26-11-2012
Publisher: Springer Science and Business Media LLC
Date: 08-01-2020
DOI: 10.1038/S41598-019-56352-8
Abstract: Bees play a key role in pollination of crops and in erse ecosystems. There have been multiple reports in recent years illustrating bee population declines worldwide. The search for more accurate forecast models can aid both in the understanding of the regular behavior and the adverse situations that may occur with the bees. It also may lead to better management and utilization of bees as pollinators. We address an investigation with Recurrent Neural Networks in the task of forecasting bees’ level of activity taking into account previous values of level of activity and environmental data such as temperature, solar irradiance and barometric pressure. We also show how different input time windows, algorithms of attribute selection and correlation analysis can help improve the accuracy of our model.
Publisher: Springer Science and Business Media LLC
Date: 2000
Publisher: Elsevier BV
Date: 06-2022
Publisher: Geological Society of London
Date: 05-2011
Publisher: MDPI AG
Date: 11-07-2012
DOI: 10.3390/S120709476
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: Springer Science and Business Media LLC
Date: 07-07-2005
DOI: 10.1038/NATURE03637
Abstract: The mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies, and could reflect either a global component or the general similarity in the compositions of the rocks from which they were derived. Increased levels of bromine are consistent with mobilization of soluble salts by thin films of liquid water, but the presence of olivine in analysed soil s les indicates that the extent of aqueous alteration of soils has been limited. Nickel abundances are enhanced at the immediate surface and indicate that the upper few millimetres of soil could contain up to one per cent meteoritic material.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 22-05-2009
Abstract: After having explored the Eagle and Endurance craters, which are separated by only 800 meters, the Mars Exploration Rover Opportunity spent 2 years at Victoria, a much larger impact crater located 6 kilometers south across Meridiani Planum. Sedimentary rocks previously analyzed at Eagle and Endurance point to local environmental conditions that included abundant liquid water in the ancient past. Now, an analysis of rocks in the walls of Victoria by Squyres et al. (p. 1058 ) reveals that the aqueous alteration processes that operated at Eagle and Endurance also acted at Victoria. In addition, sedimentary layering in the crater walls preserves evidence of ancient windblown dunes.
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: Springer Science and Business Media LLC
Date: 06-2006
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: Public Library of Science (PLoS)
Date: 09-08-2017
Publisher: Springer Science and Business Media LLC
Date: 07-2005
DOI: 10.1038/NATURE03640
Abstract: Gusev crater was selected as the landing site for the Spirit rover because of the possibility that it once held a lake. Thus one of the rover's tasks was to search for evidence of lake sediments. However, the plains at the landing site were found to be covered by a regolith composed of olivine-rich basaltic rock and windblown 'global' dust. The analyses of three rock interiors exposed by the rock abrasion tool showed that they are similar to one another, consistent with having originated from a common lava flow. Here we report the investigation of soils, rock coatings and rock interiors by the Spirit rover from sol (martian day) 1 to sol 156, from its landing site to the base of the Columbia hills. The physical and chemical characteristics of the materials analysed provide evidence for limited but unequivocal interaction between water and the volcanic rocks of the Gusev plains. This evidence includes the softness of rock interiors that contain anomalously high concentrations of sulphur, chlorine and bromine relative to terrestrial basalts and martian meteorites sulphur, chlorine and ferric iron enrichments in multilayer coatings on the light-toned rock Mazatzal high bromine concentration in filled vugs and veins within the plains basalts positive correlations between magnesium, sulphur and other salt components in trench soils and decoupling of sulphur, chlorine and bromine concentrations in trench soils compared to Gusev surface soils, indicating chemical mobility and separation.
Publisher: IEEE
Date: 09-2011
Publisher: Springer Science and Business Media LLC
Date: 1998
Publisher: Springer Science and Business Media LLC
Date: 1998
Publisher: Springer Science and Business Media LLC
Date: 2001
Publisher: IEEE
Date: 05-2012
Publisher: MDPI AG
Date: 02-03-2012
DOI: 10.3390/S120302874
Publisher: American Geophysical Union (AGU)
Date: 02-2006
DOI: 10.1029/2005JE002584
Publisher: Springer Science and Business Media LLC
Date: 07-2005
DOI: 10.1038/NATURE03807
Abstract: The ubiquitous atmospheric dust on Mars is well mixed by periodic global dust storms, and such dust carries information about the environment in which it once formed and hence about the history of water on Mars. The Mars Exploration Rovers have permanent magnets to collect atmospheric dust for investigation by instruments on the rovers. Here we report results from Mössbauer spectroscopy and X-ray fluorescence of dust particles captured from the martian atmosphere by the magnets. The dust on the magnets contains magnetite and olivine this indicates a basaltic origin of the dust and shows that magnetite, not maghemite, is the mineral mainly responsible for the magnetic properties of the dust. Furthermore, the dust on the magnets contains some ferric oxides, probably including nanocrystalline phases, so some alteration or oxidation of the basaltic dust seems to have occurred. The presence of olivine indicates that liquid water did not play a dominant role in the processes that formed the atmospheric dust.
Publisher: Springer Science and Business Media LLC
Date: 20-11-2020
Publisher: Springer Science and Business Media LLC
Date: 2002
Publisher: IEEE
Date: 05-2010
Publisher: American Geophysical Union (AGU)
Date: 06-2008
DOI: 10.1029/2007JE003022
Publisher: American Geophysical Union (AGU)
Date: 21-10-2010
DOI: 10.1029/2010JE003621
Publisher: American Association for the Advancement of Science (AAAS)
Date: 23-05-2008
Abstract: Mineral deposits on the martian surface can elucidate ancient environmental conditions on the planet. Opaline silica deposits (as much as 91 weight percent SiO 2 ) have been found in association with volcanic materials by the Mars rover Spirit. The deposits are present both as light-toned soils and as bedrock. We interpret these materials to have formed under hydrothermal conditions and therefore to be strong indicators of a former aqueous environment. This discovery is important for understanding the past habitability of Mars because hydrothermal environments on Earth support thriving microbial ecosystems.
Publisher: Wiley
Date: 2011
Publisher: American Geophysical Union (AGU)
Date: 22-12-2010
DOI: 10.1029/2010JE003668
Publisher: American Geophysical Union (AGU)
Date: 12-2008
DOI: 10.1029/2008JE003201
Publisher: Elsevier BV
Date: 07-2014
Location: Australia
Location: Australia
Start Date: 2013
End Date: 12-2016
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2020
End Date: 07-2024
Amount: $390,000.00
Funder: Australian Research Council
View Funded Activity