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Academic literature on the topic 'Port Jackson'

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Published: 4 June 2021
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Journal articles on the topic "Port Jackson"

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Thompson, G. D., J. J. Le Roux, M. A. Millar, J. R. Wilson, D. M. Richardson, and M. Byrne. "The Port Jackson 5." South African Journal of Botany 75, no. 2 (April 2009): 441–42. http://dx.doi.org/10.1016/j.sajb.2009.02.169.

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2

Izzo, Christopher, and Kate R. Rodda. "Comparative rates of growth of the Port Jackson shark throughout its southern Australian range." Marine and Freshwater Research 63, no. 8 (2012): 687. http://dx.doi.org/10.1071/mf11272.

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Port Jackson sharks are distributed throughout southern Australia, with evidence suggesting that potential subpopulations exist. If subpopulations are evident, then phenotypic variation among groups should result in differences in life-history parameters. The present study tested for patterns of spatial variability of life-history parameters among regional Port Jackson shark populations. Rates of growth from Port Jackson sharks caught in the gulf waters of South Australia were calculated on the basis of counts of vertebral increments. Growth parameters were obtained by fitting the length-at-age data to von Bertalanffy and Gompertz growth functions. While the derived growth curves fit the length-at-age data well (r2 ranged from 0.87 to 0.91), parameters showed considerable differences between the two functions, with the von Bertalanffy function providing the more realistic estimates of growth (combined sexes: k = 0.081 year–1, L∞ = 1232 mm total length and t0 = –1.937 years). Life-history parameters for South Australian Port Jackson sharks were collated with the available data for the species, facilitating comparisons among regional populations. Growth curves among populations varied significantly; however, considerable overlap in the length ranges of size at birth and sizes at maturity among populations were evident. Overall, the data presented here do not provide definitive support for the presence of subpopulations across the distribution of the Port Jackson shark, suggesting that molecular analysis maybe required to directly test for structuring.
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Liggins, GW, SJ Kennelly, and MK Broadhurst. "Observer-based survey of by-catch from prawn trawling in Botany Bay and Port Jackson, New South Wales." Marine and Freshwater Research 47, no. 7 (1996): 877. http://dx.doi.org/10.1071/mf9960877.

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Catches and by-catches were surveyed in the commercial prawn trawl fleets of Botany Bay and Port Jackson, two estuaries in the Sydney metropolitan area (NSW, Australia). Catches were surveyed in all tows during replicate fishing trips in each month during the 1990-91 and 1991-92 prawn trawl seasons in each estuary. Significant species-specific variabilities in abundances were detected between estuaries, between years, and between early and late in the fishing season. The mean annual ratio of by-catch to catch of prawns (by weight) was 2.5 : 1 for Botany Bay and 1.8 : 1 for Port Jackson. A mean annual by-catch (� 1 s.e.) of 142 � 14 t was taken from the Botany Bay fishery and 38 � 3 t from Port Jackson. These by-catches included large numbers of small recreationally and commercially important finfish: a mean annual by-catch of 1.52 �0.20 million fish from Botany Bay and 219� 23 thousand fish from Port Jackson. Despite uncertainties about the impacts of such by-catches on interacting commercial and recreational fisheries, it is recommended that strategies for the reduction of such by-catches be considered.
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Steele, Dominic. "Fishing in Port Jackson, New South Wales–more than met the eye." Antiquity 69, no. 262 (March 1995): 47–60. http://dx.doi.org/10.1017/s0003598x00064292.

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Contemporary diaries and the water-colours of artists such as the Port Jackson Painter vividly tell of Aboriginal life when the First Fleet in 1788 settled its cargo of convicts in Australia. Fishing was important around the waters of Port Jackson, whose Aboriginal inhabitants are recorded to have used the techniques of spear-fishing and angling. Were other methods also used? Fish remains from a shell midden provide an opportunity to investigate.
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Olcelli, Laura. "Alessandro Malaspina: An Italian/Spaniard at Port Jackson." Sydney Journal 4, no. 1 (October 21, 2013): 38–48. http://dx.doi.org/10.5130/sj.v4i1.2784.

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Tuscan-born and Spanish-trained Alessandro Malaspina (1754-1810) captained the most significant scientific expedition ever launched by Spain in the years 1789-1794. After a survey of the Spanish colonies in America, he directed the course of the Descubierta towards the South Pacific and anchored at Port Jackson on 11 March 1793. In my essay I will scrutinize the New South Wales leg of Malaspina’s voyage account, comparing 'Viaje político-científico alrededor del mundo' (the original 1885 Spanish edition) and 'Journal of a Voyage by Alejandro Malaspina' (its 2001 English translation), and integrating them with the captain’s secret reports. The examination of Malaspina’s comments on the infant colony will simultaneously expose the Spanish attitude to early British colonialism in New South Wales, and help assess Malaspina’s complex role as the first explorer who reached Terra Australis from the Italian peninsula.
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O'Gower, AK. "Speculations on a spatial memory for the Port Jackson shark (Heterodontus portusjacksoni) (Meyer) (Heterodontidae)." Marine and Freshwater Research 46, no. 5 (1995): 861. http://dx.doi.org/10.1071/mf9950861.

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SCUBA observations show that Port Jackson sharks repeatedly visit specific resting sites on ocean reefs at South Bondi (New South Wales) and, when disturbed, move directly from one site to another. The sharks also use specific resting sites in Sydney Harbour and, when transferred by boat to different localities within the harbour, up to 3 km away, return to their original resting sites. The sharks migrate from as far south as Tasmania to Sydney Harbour to lay their eggs in specific sites. Speculative extrapolation from the above observations suggests that Port Jackson sharks must have a highly developed spatial memory.
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Bass, Nathan Charles, Johann Mourier, Nathan A. Knott, Joanna Day, Tristan Guttridge, and Culum Brown. "Long-term migration patterns and bisexual philopatry in a benthic shark species." Marine and Freshwater Research 68, no. 8 (2017): 1414. http://dx.doi.org/10.1071/mf16122.

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Knowledge of the broad-scale movement patterns of sharks is essential to developing effective management strategies. Currently there is a large bias in studies focusing on species that are either large apex predators or found in tropical to subtropical regions. There is limited knowledge of the movements and migrations of benthic and temperate shark species. The present study used passive acoustic telemetry to investigate the movement patterns of a benthic shark species, the Port Jackson shark (Heterodontus portusjacksoni). Individuals were tagged with acoustic transmitters between 2012 and 2014 and their movements were monitored within Jervis Bay and along the east Australian coastline for up to 4 years. Male and female Port Jackson sharks demonstrated high levels of philopatry to both Jervis Bay and their tagging location across multiple years. Although males and females did not differ in their arrival times, females departed from Jervis Bay later than males. Approximately half the tagged individuals migrated in a southward direction, with individuals being detected at Narooma, Bass Strait and Cape Barron Island. This study provides conclusive evidence of bisexual philopatry in a benthic temperate shark species, confirming previous hypotheses, and presents the most detailed migration route for Port Jackson sharks to date.
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Byrnes, E. E., and C. Brown. "Individual personality differences in Port Jackson sharks Heterodontus portusjacksoni." Journal of Fish Biology 89, no. 2 (May 26, 2016): 1142–57. http://dx.doi.org/10.1111/jfb.12993.

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9

McGillivery, Angus R. "Convict Settlers, Seamen’s Greens, and Imperial Designs at Port Jackson: A Maritime Perspective of British Settler Agriculture." Agricultural History 78, no. 3 (July 1, 2004): 261–88. http://dx.doi.org/10.1215/00021482-78.3.261.

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Abstract This article is a contribution to the debate over Australia’s convict beginnings and the nature of the British colonization of New South Wales. The early agriculture of the convict colony is set in the maritime context of imperial rivalries and visions of empire in the Pacific Ocean. When the Port Jackson settlement is viewed from this maritime perspective, it is apparent that agriculture was an imperial imperative of the Pitt administration. The design and early function of the settlement as a port of shelter and refreshment ensured that, despite initial despondency and drought, a bountiful and secure agricultural hinterland was in the making. Within five years after the planting of New South Wales, convict settlers, mixed agriculture, and imperial designs had transformed "a rude, wild country into a pleasant garden." As a planned, self-sufficient, maritime settlement, Port Jackson rapidly developed its capacity to produce a surplus of antiscorbutic seamen’s greens essential for a distant port and naval base to become an assured resource of refereshment, services, and supplies necessary for Britain to "effectively occupy" the oceanic territory of New South Wales and thereby integrate the development of a global empire.
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10

Taylor, Jennifer. "MAIN STREET PORT JACKSON: THE HISTORY OF A FERRY ROUTE." Fabrications 5, no. 1 (September 1994): 3–20. http://dx.doi.org/10.1080/10331867.1994.10525072.

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Dissertations / Theses on the topic "Port Jackson"

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Rodda, Kate. "Development in the Port Jackson shark embryo /." Title page, table of contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phr686.pdf.

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Rochford, Louisa. "Stormwater heavy metal loadings to Port Jackson estuary NSW, Australia." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/4087.

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Investigations of fluvial and estuarine sediments have indicated stormwater is an important source of heavy metals to Port Jackson estuary and high concentrations of these sedimentary contaminants are a threat to the healthy functioning of the estuarine ecosystem. Stormwater remediation devices have been installed in stormwater channels entering the estuary, however these devices are mainly for removing gross pollutants and are ineffective in removing heavy metals from stormwater. A thorough characterisation of heavy metal inputs and behaviour has been undertaken by sampling, analysing and modelling heavy metals in stormwater entering Port Jackson estuary to provide a rigorous data base for future remediation efforts. A conceptual model of transport and fate of heavy metals in stormwater entering Port Jackson estuary has also been developed to identify heavy metals, subcatchments and flow regimes requiring remediation, and to assist in designing remediation devices for optimum removal of heavy metals from stormwater. Modelling of stormwater using the Model for Urban Stormwater Improvement Conceptualisation (MUSIC) indicated that the average annual discharge of stormwater from the Port Jackson catchment was 215,307 ML. Average annual loadings of arsenic, cadmium, chromium, copper, nickel, lead and zinc in stormwater discharging to Port Jackson estuary were 0.8, 0.5, 1.7, 3.2, 1.1, 3.6 and 17.7 tonnes per year, although comparison to other studies in the catchment suggests these values may be underestimations of actual loadings by 1.3 to 10 times. The proportion of heavy metals discharged under low-flow conditions (<5mm of rainfall in 24 hours), medium-flow conditions (between 5 and 50mm in 24 hours), and high-flow conditions (>50 mm of rainfall in 24 hours) was 6.5%, 62.5% and 31%, respectively. The conceptual model indicates stormwater loadings of copper, lead and zinc pose a risk to the health of riverine and estuarine ecosystems in the catchment and these metals should be targeted for remediation. Stormwater channels which should be prioritised for remediation include the channels entering southern embayments west of Darling Harbour; Duck, Parramatta and Lane Cove Rivers; and the channels and rivers entering Neutral, Long and Sugarloaf Bays. Stormwater loadings of lead are predominantly associated with suspended particulates, whereas loadings of copper and zinc are equally partitioned between dissolved and particulate phases. Stormwater remediation strategies should target both dissolved and particulate phases to ensure effective removal of copper, lead and zinc. Research suggests heavy metals in stormwater discharged to the estuary under high-flow conditions are rapidly exported seaward and bypass the estuary. Preliminary research also suggests that under medium-flow conditions, particulate heavy metals bypass the embayments of Port Jackson and are deposited in the main channel. Once deposited in the main channel, particulate heavy metals are likely to be remobilised and removed from the estuary through multiple phases of resuspension. Although further research is required in this area, this preliminary research suggests remediation should target low-flow conditions. The findings of the current research could be used to identify appropriate remediation strategies for dissolved and particulate phase heavy metals in stormwater discharging to Port Jackson estuary. However, in designing stormwater remediation devices, consideration should also be given to the range of contaminants that may be present in stormwater entering Port Jackson estuary (including suspended solids, nutrients, pesticides and organics).
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Rochford, Louisa. "Stormwater heavy metal loadings to Port Jackson Estuary, NSW, Australia." University of Sydney, 2008. http://hdl.handle.net/2123/4087.

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Master of Science
Investigations of fluvial and estuarine sediments have indicated stormwater is an important source of heavy metals to Port Jackson estuary and high concentrations of these sedimentary contaminants are a threat to the healthy functioning of the estuarine ecosystem. Stormwater remediation devices have been installed in stormwater channels entering the estuary, however these devices are mainly for removing gross pollutants and are ineffective in removing heavy metals from stormwater. A thorough characterisation of heavy metal inputs and behaviour has been undertaken by sampling, analysing and modelling heavy metals in stormwater entering Port Jackson estuary to provide a rigorous data base for future remediation efforts. A conceptual model of transport and fate of heavy metals in stormwater entering Port Jackson estuary has also been developed to identify heavy metals, subcatchments and flow regimes requiring remediation, and to assist in designing remediation devices for optimum removal of heavy metals from stormwater. Modelling of stormwater using the Model for Urban Stormwater Improvement Conceptualisation (MUSIC) indicated that the average annual discharge of stormwater from the Port Jackson catchment was 215,307 ML. Average annual loadings of arsenic, cadmium, chromium, copper, nickel, lead and zinc in stormwater discharging to Port Jackson estuary were 0.8, 0.5, 1.7, 3.2, 1.1, 3.6 and 17.7 tonnes per year, although comparison to other studies in the catchment suggests these values may be underestimations of actual loadings by 1.3 to 10 times. The proportion of heavy metals discharged under low-flow conditions (<5mm of rainfall in 24 hours), medium-flow conditions (between 5 and 50mm in 24 hours), and high-flow conditions (>50 mm of rainfall in 24 hours) was 6.5%, 62.5% and 31%, respectively. The conceptual model indicates stormwater loadings of copper, lead and zinc pose a risk to the health of riverine and estuarine ecosystems in the catchment and these metals should be targeted for remediation. Stormwater channels which should be prioritised for remediation include the channels entering southern embayments west of Darling Harbour; Duck, Parramatta and Lane Cove Rivers; and the channels and rivers entering Neutral, Long and Sugarloaf Bays. Stormwater loadings of lead are predominantly associated with suspended particulates, whereas loadings of copper and zinc are equally partitioned between dissolved and particulate phases. Stormwater remediation strategies should target both dissolved and particulate phases to ensure effective removal of copper, lead and zinc. Research suggests heavy metals in stormwater discharged to the estuary under high-flow conditions are rapidly exported seaward and bypass the estuary. Preliminary research also suggests that under medium-flow conditions, particulate heavy metals bypass the embayments of Port Jackson and are deposited in the main channel. Once deposited in the main channel, particulate heavy metals are likely to be remobilised and removed from the estuary through multiple phases of resuspension. Although further research is required in this area, this preliminary research suggests remediation should target low-flow conditions. The findings of the current research could be used to identify appropriate remediation strategies for dissolved and particulate phase heavy metals in stormwater discharging to Port Jackson estuary. However, in designing stormwater remediation devices, consideration should also be given to the range of contaminants that may be present in stormwater entering Port Jackson estuary (including suspended solids, nutrients, pesticides and organics).
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4

Heydenrych, Barry. "A test of the nitrogen-fixing ability of three agroforestry tree legumes, Tagasaste (Chamaecytisus palmensis), Port Jackson (Acacia saligna) and Sesbania sesban, when inoculated with three rhizobial strains." Thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/26124.

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Vogel, Andrew Richard. "Narrating the geography of automobility American road story 1893-1921 /." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1180455063.

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Rodda, Kate R. (Kate Rose). "Development in the Port Jackson shark embryo." 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phr686.pdf.

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Starbuck, Nicole. "Constructing the "perfect" voyage: Nicolas Baudin at Port Jackson, 1802." 2010. http://hdl.handle.net/2440/60141.

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In 1802, a French scientific expedition under the command of Nicolas Baudin made an uscheduled visit to the British colony at Port Jackson, New South Wales. It was a pivotal episode in the course of Baudin's Australian voyage. The commander had already fulfilled most of his instructions, though imperfectly, and only the north coast of New Holland remained unexamined. He and his men stayed at anchor in Port Jackson for over five months. When they set sail once more, they embarked on what historians agree was a new phase of the expedition. Baudin and his men did not proceed directly to the north coast, but returned to the southern and western coasts, where they perfected and augmented the work in geography and natural history that they had carried out earlier. This thesis examines what occurred during the sojourn at Port Jackson, as well as the circumstances that led up to it, in order to determine in precise terms why and how this episode came to be a turning point in Baudin's voyage. It asks: was the second campaign just an extension of the first or was it an opportunity for Baudin to redefine the voyage? The Port Jackson sojourn thus serves as a site of interrogation regarding the nature of Nicolas Baudin's leadership and the construction, on British colonial territory, of a French scientific voyage. However, the opportunity to gain real insight into the sojourn of the voyagers at Port Jackson has been limited by a perceived scarcity of resources. The fact that Baudin's journal falls silent here has meant that there is no one privileged source of information on the commander's role or on the day-to-day activities of the expeditioners, and that scholars examining this episode have tended to focus on the details of the larger picture rather than on the larger picture itself. This is not to say that the presence of the Baudin expedition in Port Jackson has left no material traces. In fact, there is a diverse range of archival records – expense accounts, correspondence, inventories of specimens, journals kept by officers and savants and the logbooks of the Géographe – from which the day-to-day life of the commander and his men at Port Jackson can be reconstructed. Commencing with an analysis of the events that led up to the sojourn and influenced Baudin's approach to it, this study examines the relationships that Baudin built in the colony, his manner of command aboard the Géographe and the scientific results of the stay. After then analysing the way in which Baudin managed the sojourn and planned the second campaign, we conclude that Baudin did not simply seek to satisfy the expectations of his superiors but in fact he seized this opportunity to create the “perfect” scientific voyage.
Thesis (Ph.D.) -- University of Adelaide, School of Humanities, 2010
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Starbuck, Nicole. "Constructing the "perfect" voyage: Nicolas Baudin at Port Jackson, 1802." Thesis, 2010. http://hdl.handle.net/2440/60141.

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In 1802, a French scientific expedition under the command of Nicolas Baudin made an uscheduled visit to the British colony at Port Jackson, New South Wales. It was a pivotal episode in the course of Baudin's Australian voyage. The commander had already fulfilled most of his instructions, though imperfectly, and only the north coast of New Holland remained unexamined. He and his men stayed at anchor in Port Jackson for over five months. When they set sail once more, they embarked on what historians agree was a new phase of the expedition. Baudin and his men did not proceed directly to the north coast, but returned to the southern and western coasts, where they perfected and augmented the work in geography and natural history that they had carried out earlier. This thesis examines what occurred during the sojourn at Port Jackson, as well as the circumstances that led up to it, in order to determine in precise terms why and how this episode came to be a turning point in Baudin's voyage. It asks: was the second campaign just an extension of the first or was it an opportunity for Baudin to redefine the voyage? The Port Jackson sojourn thus serves as a site of interrogation regarding the nature of Nicolas Baudin's leadership and the construction, on British colonial territory, of a French scientific voyage. However, the opportunity to gain real insight into the sojourn of the voyagers at Port Jackson has been limited by a perceived scarcity of resources. The fact that Baudin's journal falls silent here has meant that there is no one privileged source of information on the commander's role or on the day-to-day activities of the expeditioners, and that scholars examining this episode have tended to focus on the details of the larger picture rather than on the larger picture itself. This is not to say that the presence of the Baudin expedition in Port Jackson has left no material traces. In fact, there is a diverse range of archival records – expense accounts, correspondence, inventories of specimens, journals kept by officers and savants and the logbooks of the Géographe – from which the day-to-day life of the commander and his men at Port Jackson can be reconstructed. Commencing with an analysis of the events that led up to the sojourn and influenced Baudin's approach to it, this study examines the relationships that Baudin built in the colony, his manner of command aboard the Géographe and the scientific results of the stay. After then analysing the way in which Baudin managed the sojourn and planned the second campaign, we conclude that Baudin did not simply seek to satisfy the expectations of his superiors but in fact he seized this opportunity to create the “perfect” scientific voyage.
Thesis (Ph.D.) -- University of Adelaide, School of Humanities, 2010
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Sutton, Timothy L. "Evolutionary ecology of fig wasps associated with the Port Jackson fig." Thesis, 2016. http://hdl.handle.net/1959.7/uws:37618.

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Geography plays an important role in the study of evolutionary ecology. It has implications for the coevolution of species interactions, our ability to accurately and confidently delimit species boundaries, and can influence species’ adaptations that may provide resilience, or make them vulnerable, to climatic change. A geographic consideration of these issues can help to improve our understanding of the processes generating biodiversity and its fate under predicted climate change. In this thesis, I investigated the genetic structure of a pollinator-parasitoid interaction over a wide geographic range, assessed the reliability of DNA barcoding under different geographic scenarios, and examined the resilience of a temperate fig-pollinating wasp species to climate change. Figs are keystone species in many regions and the fig – pollinator system is a classic example of an obligate mutualism. In this thesis, I explored the evolutionary ecology of pollinator and non-pollinator fig wasps associated with the Port Jackson fig (Ficus rubiginosa) in eastern Australia. This system is particularly interesting due to the sheer number of species that interact within F. rubiginosa fruits. There are five recognised pollinating wasps of F. rubiginosa: Pleistodontes imperialis sp. 1, 2, 3, 4 and 5 (sensu Haine et al. 2006). All of these are parasitised by Sycoscapter non-pollinating fig wasps, of which there are three species: Sycoscapter sp. A, B and C. The results presented in this thesis highlight the importance of population genetic approaches to coevolutionary studies and biodiversity assessments. Importantly, in estimating biodiversity, we must consider contemporary processes that are likely to be shaping the future of biodiversity, rather than focussing purely on past processes that have shaped biodiversity as we see it today. Only then can realistic predictions be made about the future of species under predicted climate change.
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Ramos, Robert. "Age and growth estimates for the Port Jackson shark, Heterodontus portusjacksoni, (Meyer, 1793) from New South Wales, Australia." Thesis, 2007. http://hdl.handle.net/1959.13/28343.

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Research Doctorate - Doctor of Philosophy (PhD)
World shark populations are declining rapidly from the increased demand for shark meat and fins and from their capture as by-catch. Techniques to accurately and reliably estimate the age of elasmobranchs are required to understand life history and develop management strategies. Although some biological information exists for the harvested species, few of the many shark species caught as by-catch have been investigated. In the waters of New South Wales, Australia, the Port Jackson shark (Heterodontus portusjacksoni) is a non-targeted species, however it is a major contributor to the elasmobranch by-catch in the bottom trawl and prawn fisheries. Although some biological and ecological information exists on Port Jackson sharks from New South Wales, there is no understanding of suitable techniques to age this species and of the age structure of the New South Wales’ population. Hence, the main purpose for the present study was to determine a suitable technique to age Port Jackson sharks and thereby provide essential age and growth data for its future management, sustainable use and conservation. This study consisted of research into: (1) the macroscopic anatomy of the vertebral centra and dorsal spines from 652 H. portusjacksoni to explore their suitability as ageing structures; (2) a comparison of whole and sectioned vertebral centra and of whole and sectioned dorsal spines for ageing; (3) validation of the annual formation of growth bands; (4) a comparison of the effect of prior experience on readers’ ability to count annual growth bands in vertebral centra; and (5) the development of age-growth models for the New South Wales’ population of H. portusjacksoni. Two types of vertebral centra (trunk and caudal vertebrae) were found in the vertebral column. Both vertebrae consisted of a centrum, 2 ribs, 4 neural arches, basiopophyses and neural foramen and decreased in size from anterior to posterior. A strong linear relationship was identified between vertebral diameter (VD) and fork length (FL). Each dorsal spine was positioned anterior to the dorsal fin and consisted of a stem and the cap. A strong linear relationships were identified between spine base width (SBW) and FL. The existence of alternating opaque and translucent band pairs in both structures further suggested they may be suitable for ageing purposes. Validation (calcein and oxytetracycline injections, marginal increment analysis, and centrum edge analysis) confirmed that translucent band pairs were formed during the winter (September-November) and were annual in both vertebral centra and dorsal spines. Whole and sectioned vertebral centra and dorsal spines were individually examined to determine which method best estimated the age. Although both methods had individual low reading bias and high precision, there was a difference between the two methods. The average bias between the two methods using vertebral centra was -0.158 ±0.05 and the coefficient of variance (CV) was 92.32% for females and -0.157 ±0.03 and CV was 56.95% for males. This indicated that sectioned vertebral centra returned higher ages than whole vertebral centra. When comparing whole dorsal spine age estimates to sectioned dorsal spines, there was an average bias between methods of -0.22 ±0.026 and a low precision 73.09%. Again indicating that sectioned dorsal spines returned higher ages than whole dorsal spines. A comparison of ages estimated from sectioned vertebral centra and sectioned dorsal spines showed that vertebral centra aged older than dorsal spines. Although the two structures each had low reading bias and high reading precision, there were differences between the two structures. The average bias between the two structures was -0.4 ±0.03 and the CV was low (74.7%), indicating that there was a significant difference in age derived from the two structures. Therefore, great caution should be taken when choosing which structure to use for age estimation. Ages of sharks estimated from the recommended sectioned vertebral centra ranged from 0.2 to 32.5 years for females and 0.2 to 23.8 years for males. Four different growth models were compared using both sectioned vertebral centra and sectioned dorsal spines to estimate the best suitable growth curve. Out of the 4 growth models the Gompertz Growth Function (GGF) best described the growth of H. portusjacksoni. von Bertalanffy growth parameters estimated from ageing data using the GGF for females were t0 = 2.584 yr, k = 0.111, L∞ = 1134.1 mm FL, and for males t0 = 1.629 yr, k = 0.131, L∞ = 1012.9 mm FL. This indicates that H. portusjacksoni has a slow growth rate and a longer life span than most other elasmobranch species. The effect of reader’s experience on the bias and precision of age estimates of sectioned vertebral centra was determined in an experiment that compared the author (an experienced vertebral centra reader) with an experienced fish otolith reader, two readers recently trained in reading vertebral centra (but lacking experience), and two untrained and inexperienced readers. Bias and precision were determined for each reader from two ageing trials with the same structure three months apart. Between-trials bias for each reader (except the author)ranged from 0.033 to 0.13 and precision ranged from 8.2 to 19.5%, while the author had low bias 0.006 and high precision 1.1%. When comparing all the readers with the author, bias ranged from 0.033 to 0.13 with an 8.2 to 19.5% precision for trial one, and 0.017 to 0.5 with precision between 2.5 to 5.4% in trial two. The age-bias plots comparing the two trials all indicated that only the author was consistent. And the age-bias plots between the author and the other readers all indicated that neither experience in ageing teleost otoliths or limited training in ageing enhanced the bias or precision compared to inexperienced elasmobranch agers.
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Books on the topic "Port Jackson"

1

Clancier, Agnès. Port Jackson: Roman. [Paris, France]: Gallimard, 2007.

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Gard, Stephen. Port Jackson pullers: Champion oarsmen of early Australia. Thirlmere, N.S.W: BlueDawe Books, 2014.

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Krick, Robert K. Conquering the valley: Stonewall Jackson at Port Republic. Baton Rouge: Louisiana State University Press, 2002.

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Conquering the valley: Stonewall Jackson at Port Republic. New York: Morrow, 1996.

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Bougainville, Hyancinthe Yves Philippe Potentien. The governor's noble guest: Hyacinthe de Bougainville's account of Port Jackson, 1825. Carlton South, Vic: Miegunyah Press, 1999.

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1956-, Flannery Tim F., Tench Watkin 1759?-1833, and Tench Watkin 1759?-1833, eds. 1788: Comprising A narrative of the expedition to Botany Bay and A complete account of the settlement at Port Jackson. Melbourne, Vic: Text Pub., 2009.

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1956-, Flannery Tim F., and Tench Watkin 1759?-1833, eds. 1788: Comprising A narrative of the expedition to Botany Bay and A complete account of the settlement at Port Jackson. Melbourne, Australia: Text Pub. Co., 1996.

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Port Jackson 200. Sydney, Australia.: A.W.Reeds, 1986.

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Dantini, Bill. Port Jackson Paisans. Lulu Press, Inc., 2013.

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Tench, Watkin. Complete Account of the Settlement at Port Jackson, in New South Wales: Including an Accurate Description of the Situation of the Colony, of the Natives, and of Its Natural Productions. Cambridge University Press, 2012.

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Book chapters on the topic "Port Jackson"

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Bulkeley, Rip. "Port Jackson, April 1820." In Bellingshausen and the Russian Antarctic Expedition, 1819–21, 3–8. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1007/978-1-137-40217-2_1.

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Staniforth, Mark. "Port Jackson and the Wreck of Sydney Cove (1797)." In The Plenum Series in Underwater Archaeology, 65–99. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0211-1_5.

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Konishi, Shino. "The Father Governor: the British Administration of Aboriginal People at Port Jackson, 1788–1792." In Public Men, 54–72. London: Palgrave Macmillan UK, 2007. http://dx.doi.org/10.1007/978-1-349-58289-1_4.

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Jones, Russell C., and Minjie Lin. "Structure and functions of the genital ducts of the male Port Jackson shark, Heterodontus portusjacksoni." In The reproduction and development of sharks, skates, rays and ratfishes, 127–38. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-3450-9_11.

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Attenbrow, Val. "Aboriginal fishing in Port Jackson, and the introduction of shell fish-hooks to coastal New South Wales, Australia." In The Natural History of Sydney, 16–34. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2010. http://dx.doi.org/10.7882/fs.2010.004.

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Attenbrow, Val. "The Role of Marine Resources in the Diet of Pre-Colonial Aboriginal People and Land Use Patterns Around Port Jackson, Sydney, New South Wales, Australia." In Trekking the Shore, 463–91. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-8219-3_20.

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Pheasant-Kelly, Frances. "Settings, Spectacle, and the Other: Picturing Disgust in Jackson’s The Lord of the Rings Trilogy." In Fantasy Film Post 9/11, 23–45. New York: Palgrave Macmillan US, 2013. http://dx.doi.org/10.1057/9780230392137_2.

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Malaspina, Alejandro, Andrew David, Felipe Fernandez-Armesto, Carlos Novi, Glyndwr Williams, and Sylvia Jamieson. "At Port Jackson." In The Malaspina Expedition 1789–1794, 67–88. Routledge, 2018. http://dx.doi.org/10.4324/9781315211886-5.

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Malaspina, Alejandro, Andrew David, Felipe Fernandez-Armesto, Carlos Novi, Glyndwr Williams, and Sylvia Jamieson. "From Port Jackson to Vava’u." In The Malaspina Expedition 1789–1794, 91–100. Routledge, 2018. http://dx.doi.org/10.4324/9781315211886-6.

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Malaspina, Alejandro, Andrew David, Felipe Fernandez-Armesto, Carlos Novi, Glyndwr Williams, and Sylvia Jamieson. "From entering the Pacific Ocean to Port Jackson." In The Malaspina Expedition 1789–1794, 39–66. Routledge, 2018. http://dx.doi.org/10.4324/9781315211886-4.

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Conference papers on the topic "Port Jackson"

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Colby, Thomas A., Clyde J. Northrup, Walter S. Snyder, and Mark D. Schmitz. "POST-EARLY CRETACEOUS SHORTENING IN THE JACKSON MOUNTAINS, NORTHWEST NEVADA." In 68th Annual Rocky Mountain GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016rm-276181.

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McLachlan, Kathryn, Linda Yeomans, and Keith-Zhi-Guo Lim. "A competency development approach to learning for employment." In Third International Conference on Higher Education Advances. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/head17.2017.5421.

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Higher Education Institutions are increasingly aware of industry expectations regarding work-ready graduates. Work Integrated learning and co-operative education initiatives are widely acknowledged for improving professional skills and work readiness, however, graduates often lack the ‘soft’ skills (communication, collaboration, problem solving) deemed essential for enhanced productivity and innovation in the workplace, i.e. employability skills (Jackson, 2010). Anecdotal evidence from the Professional and Community Engagement (PACE) program at Macquarie University identified the difficulties that students experience in self-assessing employability skills. One research study highlighted the inflated self-perceptions and an overall lack of humility often associated with recent graduates (Papadopoulos 2010, cited in Jackson 2015). This paper discusses the theoretical and practical development of a competency development approach to learning for employment using an Assessment Centre process model currently embedded in the curriculum of one PACE unit. Developed and coordinated by post-graduate psychology students, the model provides a set of behavioural criteria by which to assess student employability skills. While there is little evidence in the literature of the use of AC's for enhancing undergraduate employability, (see Keele et al, 2010), preliminary research and evaluation findings from this project, suggest that the AC process can have a positive influence on the development of the ‘soft’ skills of employability
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Uno, Shumpei, Jinya Katsuyama, Tadashi Watanabe, and Yinsheng Li. "Loading Condition Evaluation for Structural Integrity Assessment of RPV due to PTS Event Based on Three-Dimensional Thermal-Hydraulics and Structural Analyses." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63443.

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For structural integrity assessment on a reactor pressure vessel (RPV) of pressurized water reactor during the pressurized thermal shock (PTS) events, thermal histories of coolant water and heat transfer coefficient between coolant water and RPV are important influence factors. The former is determined on the basis of thermal-hydraulics (TH) analyses simulating PTS events and the latter is derived from Jackson-Fewster correlation using TH analysis results. Using these factors, subsequently, loading conditions for structural integrity of RPVs are evaluated by structural analyses. Nowadays, three-dimensional TH and structural analyses are recognized as precise methods for assessing structural integrity of RPVs. In this study, we performed the TH and structural analyses using a three-dimensional model including cold-leg, downcomer and beltline region of RPV in order to evaluate loading conditions during a PTS event more accurately. Distributions of temperature of coolant water and heat transfer coefficient on the surface of RPV were calculated by TH analysis. Loading condition evaluation was then performed by structural analysis using these values and taking the weld residual stress due to weld-overlay cladding and post-weld heat treatment into consideration. From these analyses, we obtained histories and distributions of loading conditions at the reactor beltline region of RPV. Based on the analysis results of loading conditions, we discussed the conservativeness of current structural integrity assessment method of RPV prescribed in the current codes through the comparison of the loading conditions due to a PTS event.
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Ofia, Ifeanyichukwu, Esther Briggs, Victor Longe, Ricky Iyengumwena, and Dominic Wong. "Successful Implementation of Blast Joint Perforation Technology in a Dual String Completion." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207175-ms.

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Abstract The results of computer simulations and laboratory tests have been applied at Porth field in Nigeria to achieve a successful perforation through a blast joint to access hydrocarbon behind pipe. Accessing hydrocarbons behind pipe in multizone completions can be difficult. The options are; an expensive rig-based workover or a cost-effective, rigless, through-tubing perforation. For a rigless through-tubing option, the detonated perforation charges must pass through a blast joint, the casing and the cement and then into the target reservoir. The major concern is usually whether there will be enough penetration {Burky 2018} into the target reservoir interval, given the layers of material resistance that the charges will have to overcome, starting at the blast joint. The Blast joint has a higher wall thickness and a larger outer diameter than that of the conventional tubing string to mitigate against erosion from producing the target interval behind pipe. The goal in perforation operations is achieving the maximum production while reducing perforation damage. {Jackson 2016}. Computer simulations and laboratory tests for a well at Porth field in Nigeria were carried out to determine the potential for successful perforation through a blast joint to access hydrocarbon behind pipe. Coupon tests using different gun sizes and charges where simulated and tested to ascertain the most effective option to achieve the desired reservoir penetration. Both computer simulations and laboratory test results showed that a reasonable depth of penetration into the target reservoir interval was possible to achieve. The perforation job using a 1.56-in., six-shots-per-foot (6 spf), 60° phasing gun was successfully carried out and the well has been tested to a potential of 780bbl/d at a tubing head pressure of 943psi and choke size 20/64th. This success lays the foundation for going after other similar opportunities locked in behind-pipe previously thought inaccessible owing to the presence of a blast joint across the target interval. Associated rig costs for a workover of up to $10 million can be saved on each opportunity using this approach.
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Chandrasekhar, Sriram, Dennis Arun Alexis, Julia Jin, Taimur Malik, and Varadarajan Dwarakanath. "Polymer Injectivity Enhancement Using Chemical Stimulation: A Multi-Dimensional Study." In SPE Improved Oil Recovery Conference. SPE, 2022. http://dx.doi.org/10.2118/209425-ms.

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Abstract Chevron injected emulsion polymer in the Captain field, offshore UK in the last decade at various scales (Poulsen et al., 2018). Pilot horizontal wells had exhibited faster than designed injectivity decline and Jackson et al. (2019) documented the causes to include oleic phase damage from a) injection of produced water containing crude oil after imperfect separation, and b) entrainment of injected emulsion polymer’s carrier oil. The wells were remediated with a surfactant stimulation package (Alexis et al., 2021; Dwarakanath et al., 2016). The remediation boosted the water relative permeability near wellbore which enhanced injectivity and allowed higher processing rates for subsequent continuous polymer injection. In this work, we conducted a set of core floods in slabs of surrogate rock of varying dimension and patterns to demonstrate the beneficial effect of near wellbore stimulation in the general case. 0.04 PV of the remediation package was injected and we show consistent injectivity enhancement across the experiments. We demonstrate the dominant effect of well skin treatment on the pressure drop profile compared to flow resistance from a) residual oil saturation and b) viscous fingering. The result is an important reminder for injectivity maintenance for high polymer flood processing rates for the life of the project. Clean injection fluids were demonstrated to maintain injectivity. We show applicability of stimulation for injectors into viscous oil reservoirs with adverse viscosity ratio. The robust nature of the remediation package developed by Alexis et al. (2021) is also shown, working to efficacy on viscous oil, as well as in situ phase separated polymer. We estimated skin and stimulation depth for a line drive case with low chemical dosage finding that 0.04 pore volumes of surfactant injection at 0.33 oil saturation units gave injectivity improvement of 31%. Surfactant stimulation is thus broadly applicable to wells with oleic phase skin.
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Griffin, Aaron A., and Timothy J. Jacobs. "Combustion Characteristics of a 2-Stroke Large Bore Natural Gas Spark-Ignited Engine." In ASME 2015 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icef2015-1010.

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Naturally, there are complex interactions among internal combustion engine parameters such as in-cylinder pressure, emissions, speed, and load. These basic relationships are studied in a naturally aspirated, spark-ignited, two-stroke large bore natural gas engine. The typical application for such an engine is in the oil and gas industry, operating heavy machinery such as large compressors and oil field pump jacks. Cylinder pressure measurements averaged over 300 cycles are captured for speeds of 350 and 525 RPM and load ratings of 50%, 75%, and 100% of rated torque at each respective speed. Non-sequential individual cycle pressure curves are also captured to depict cycle-to-cycle variation within the engine at each operating point. Emissions data are captured and presented for each operating point. At another 8 test conditions, pressure measurements averaged from 100 cycles are taken to specifically investigate disagreement among compression pressure curves; these conditions include 350, 400, 440, and 470 RPM at 50% and 85% of the rated load. It is found that low load cycle-to-cycle variation is extreme, having COV of IMEP values over 30%. Such engines are not designed to operate at low-load conditions. Cyclic variation is shown to decrease with increasing load and decreasing speed. As expected, peak pressures increase with increasing load and decrease with increasing speed. Emissions of THC and CO decrease with increasing load, while emissions of NO are highest at low speed and high load. It is also shown that compression pressure behavior after exhaust port closure but before ignition is different among different speeds and loads. This may be characteristic of scavenging and heat transfer behavior.
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Novák, Balthasar, Vazul Boros, and Jochen Reinhard. "Strengthening strategies of highway viaducts in Germany." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0245.

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<p>An entire generation of reinforced concrete highway bridges built in the post-war period in Germany meanwhile is approaching the end of their service life. The federal government and regional highway administrations have realized the need to repair, strengthen or to replace these structures and engage in extensive infrastructural investments to meet this challenge. It is not possible to replace those bridges in a short period, so that a guideline for reassessment of bridges has been developed to enable to prioritize the structures. Besides the replacement of the bridges, measures need to be taken in order to extend the lifespan of the decaying bridges until such replacement becomes available. Using the examples of four major highway viaducts near Frankfurt/Main and Hamburg efficient strategies to strengthen existing structures will be presented.</p><p>In the first example the efficient usage of external tendons to reduce the danger of a fatigue induced failure of a 50 years old prestressed concrete bridge will be presented.</p><p>A bridge of five spans with a total length of approximately 300 m showing inadequate shear resistance has been enhanced by installing inclined steel struts at the pillars. The struts are activated with a predefined force by built-in hydraulic jacks, while special spring elements used as supports reduce the effect of imposed deformations. Furthermore in critical areas of the webs additional shear reinforcement is mounted and subsequently covered by a concrete layer.</p><p>Another large viaduct was showing signs of fatigue at the coupling joints. A detailed analysis of the structure revealed, that the lifespan could be sufficiently prolonged by supporting the critical coupling joints with a predetermined force. The magnitude of the force is maintained constant by a balanced beam resembling a seesaw, which is mounted on a steel tower and fitted at its opposite end with counterweights.</p><p>The final example shows how to apply controlled uplift forces using an elastic bedded supporting beam construction.</p><p>These realized examples demonstrate, how with smart and intelligent measures critical bridges can be strengthened and an essential increase in lifespan can be achieved.</p>
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