Search

This paper reports on the first stage of an international comparative study for the project "'Digital educational architectures: Open learning resources in distributed learning infrastructures--EduArc,'" funded by the German Federal Ministry of Education and Research. This study reviews the situation of digital educational resources (or (O)ER) framed within the digital transformation of ten different Higher Education (HE) systems (Australia, Canada, China, Germany, Japan, South Africa, South Korea, Spain, Turkey and the United States). Following a comparative case study approach, we investigated issues related to the existence of policies, quality assurance mechanisms and measures for the promotion of change in supporting infrastructure development for (O)ER at the national level in HE in the different countries. The results of this mainly documentary research highlight differences and similarities, which are largely due to variations in these countries' political structure organisation. The discussion and conclusion point at the importance of understanding each country's context and culture, in order to understand the differences between them, as well as the challenges they face.

In order to disseminate the findings and recommendations from their studies, researchers publish papers in scientific journals in their subject area. Research communities thus emerge as a result of the communication between authors who cite other relevant papers. This study focuses on the relationships between Spanish and English research communities in the specific field of Educational Technology. We explore as hypotheses whether there are signs of scientific journal communication between authors in these two communities, and if the English authors reciprocate citations by Spanish authors. In order to verify them, a social network analysis was conducted by considering outgoing and incoming citations in eight open access journals (four in English and four in Spanish) published over ten years (2007-2016). The sample includes 3,407 articles, which were analysed using UCINET and Gephi software. The results show partial confirmation of the hypotheses, since two separate research communities were recognized, with almost no communication between them. However, the Spanish community was presented as more connected than the English one. We interpret these results by considering not only language factors, but also the journal roots and the particular subject field under consideration. Finally, we highlight some general recommendations to enhance future communication between these two education research communities.

Open Educational Resources (OER) in higher education cannot be put into practice without considering institutional contexts, which differ not only globally but also within the same country. Each institutional context provides educators with opportunities or limitations where Open Educational Practices (OEP) and OER for teaching and learning are involved. As part of a broader research project, and as a follow-up to national perspectives, an international comparison was conducted, based on institutional cases of nine different higher education systems (Australia, Canada, China, Germany, Japan, South Africa, South Korea, Spain, Turkey). Aspects regarding the availability of infrastructure and institutional policies for OER, as well as the existence of measures directed at OER quality assurance and at the promotion of the development and use of OER were covered. The resulting theoretical contribution sheds light on an international comparative view of OER and points towards country-specific trends, as well as differences among institutions. These aspects could provide an impetus for the development of institutional guidelines and measures. In line with international literature on the topic, recommendations are derived to promote/enhance the use of OER in teaching and learning in higher education at the institutional level.

This paper explores faculty's perspectives and use of open educational resources (OER) and their repositories across different countries by conducting a multiple case study to find similarities and differences between academics' awareness, perceptions and use of OER, as well as examining related aspects of institutional policy and quality that may influence individual views. Data were collected through nine expert reports on each country studied (Australia, Canada, China, Germany, Japan, South Africa, South Korea, Spain and Turkey) and were analyzed through qualitative content analysis using thematic coding. Findings show the impact on individual OER adoption with regard to the individual control of diverse factors by faculty members; of institutional policies and quality measures on the externally determined factors (by the institution); and of institutional professional development and provision of incentives in more internally determined factors (by the faculty members themselves). These findings carry implications for higher education institutions around the world in their attempt to boost OER adoption by faculty members.

Purpose: This study uses a holistic approach to learning at work to examine the role of reflection in the formal-informal learning interaction. The purpose of this study is to investigate how the reflection on a formal training affects the subsequent informal learning activities. This study also aims to provide insights into the effects of national culture values (in terms of uncertainty avoidance) on learning in the context of a globalized world of work. Design/methodology/approach: In a longitudinal study, 444 employees working for a global acting automotive company located in 6 countries were surveyed 2 times (4-6 weeks between both measurements). Participants reflected on a training they participated in (t[subscript 1]: satisfaction and utility) and indicated their informal learning activities (t[subscript 2]). Structural equation modelling was used to investigate the effect of the reflection of training (t[subscript 1]) on the proceeding use of informal learning strategies (t[subscript 2]) and how uncertainty avoidance affects the use of different learning forms. Findings: Results show a spillover effect: when employees reflect a formal training and rate it as satisfying, more use of informal learning proceeds. No effects were found for utility. Uncertainty avoidance had direct effects: high uncertainty avoidance results in better evaluations and more informal learning. Furthermore, uncertainty avoidance had an indirect effect on informal learning via reflection. Originality/value: To the best of the authors' knowledge, this study is the first to investigate the formal-informal learning interaction longitudinally and to introduce reflection as a mediator within this process. Furthermore, the study provides evidence that uncertainty avoidance is an important factor for formal and informal learning in the globalized world of work.

Changes in Earth's magnetic field during the Cretaceous Normal Superchron (CNS) spanning ∼121 Ma to ∼84 Ma hold important clues about the geodynamo evolution. Canonical models predict a persistently strong geomagnetic field with low variability during CNS, which, however, has not been observed in the available absolute paleointensity data and seafloor marine magnetic anomaly (MMA) records. The lack of relative paleointensity (RPI) data across CNS further impedes tests of model predictions. Here, we present a ∼9‐Myr (∼94–∼85 Ma) RPI record from a Turonian to Santonian hemipelagic succession from IODP Site U1512 offshore southern Australia. Detailed paleomagnetic and rock magnetic analyses demonstrate that the ratio of natural remanent magnetization (NRM) demagnetized at 20 mT over magnetic susceptibility (MS), that is, NRM20mT/MS, as a reliable proxy for the RPI of the Upper Cretaceous succession. The new RPI record shows marked changes in both intensity and variability at ∼90.8 Ma. Also, the 6 Myr‐long (∼94–∼88 Ma), near‐continuous, ∼1.2 kyr‐resolution RPI record exhibits a strong positive correlation between field intensity and variability. Assuming this correlation holds for the entire CNS, an extrapolated RPI curve for the entire CNS is obtained by integrating the positive correlation with field variability estimates from the MMA data. The extrapolated RPI curve shows a strong and highly variable field in the middle CNS but a weak and stable field at its beginning and ending. These features imply a much more dynamic geodynamo than previously thought, and provide crucial benchmarks for unraveling the geodynamo evolution during CNS. Plain Language Summary: Cretaceous Normal Superchron (CNS, ∼121 to ∼84 million years ago) marks a nearly 40 million years interval of almost constant normal geomagnetic polarity. Changes in Earth's magnetic field during CNS hold important clues about the evolution of the geodynamo, by which the geomagnetic field was generated. However, whether the geomagnetic field was persistently strong and stable during CNS has been controversial based on estimates from snapshot recordings of igneous rocks and marine magnetic anomaly data. Here, we report a high‐resolution near continuous relative paleointensity (RPI) record of the ∼88–94 million years old interval from a hemipelagic sedimentary succession at IODP Site U1512. The new RPI record documents salient changes in both intensity and variability of the geomagnetic field at ∼90.8 million years ago and a positive correlation between these two parameters toward the ending of CNS. These features imply that the geomagnetic field was strong and highly variable in the middle CNS, but weak and stable at its beginning and ending. These findings indicate much more dynamic geodynamo behavior during the CNS than previously thought, and thus provide important benchmarks for "ground truthing" model simulations to unravel the geodynamo evolution during CNS. Key Points: We report a ∼9 Myr high‐resolution RPI record for the late stage (∼94–∼85 Ma) of CNS from IODP Site U1512 coresThe new RPI record shows a marked change in intensity and variability at ∼90.8 Ma and a positive correlation between these two parametersSalient changes in geomagnetic field's strength and variability imply a much more dynamic geodynamo than previously thought during CNS [ABSTRACT FROM AUTHOR]

Economic rationalism is a major driver of the education system in many parts of the world. In the scramble to facilitate economic rationalism, the education needs required at national level to keep nations, like Australia, competitive into the twenty-first century have not been fully considered. Such countries have ignored the needs of education for the first-tier requirements of global organisations. First-tier decision making is that aspect of centralized decision making activities, usually in highly developed countries, undertaken by those who can direct and control organizations, confining the rest of the world to lower levels of activity and income. Income, status, authority and consumption patterns radiate out from this tier along a declining curve. Neglecting the needs of the first tier has relegated education users to a follower, second- or third-tier position. This paper considers this three-tier system and how it relates to the Australian context that aspires to a first-tier position. (Contains 8 notes.)

Background: While advances in healthcare mean people are living longer, increasing frailty is a potential consequence of this. The relationship between frailty among older surgical patients and hospital acquired adverse events has not been extensively explored. We sought to describe the relationship between increasing frailty among older surgical patients and the risk of hospital acquired adverse events. Methods: We included consecutive surgical admissions among patients aged 70 years or more across the SWSLHD between January 2010 and December 2020. This study used routinely collected ICD‐10‐AM data, obtained from the government maintained Admitted Patient Data Collection. The relationships between cumulative frailty deficit items and risk of hospital acquired adverse events were assessed using Poisson regression modelling. This study followed the RECORD/STROBE guidelines. Results: During the study period, 44,721 (57% women) older adults were admitted, and 41% (25,306) were planned surgical admissions. The risk of all adverse events increased with increasing number of frailty deficit items, the highest deficit items group (4–12 deficit items) compared with the lowest deficit items group (0 or 1 deficit item): falls adjusted rate ratio (adj RR) = 15.3, (95% confidence interval (CI) 12.1, 19.42); pressure injury adj RR = 21.3 (95% CI 12.53, 36.16); delirium adj RR = 40.9 (95% CI 31.21, 53.55); pneumonia adj RR = 16.5 (95% CI 12.74, 21.27); thromboembolism adj RR = 17.3 (95% CI 4.4, 11.92); and hospital mortality adj RR = 6.2 (95% CI 5.18, 7.37). Conclusion: The increase in number of cumulative frailty deficit items among older surgical patients was associated with a higher risk of adverse hospital events. The link offers an opportunity to clinical nursing professionals in the surgical setting, to develop and implement targeted models of care and ensure the best outcomes for frail older adults and their families. [ABSTRACT FROM AUTHOR]

During 2013, multiple tornadoes occurred across Australia, leading to 147 injuries and considerable damage. This prompted speculation as to the frequency of these events in Australia, and whether 2013 constituted a record year. Leveraging media reports, public accounts, and the Bureau of Meteorology observational record, 69 tornadoes were identified for the year in comparison to the official count of 37 events. This identified set and the existing historical record were used to establish that, in terms of spatial distribution, 2013 was not abnormal relative to the existing climatology, but numerically exceeded any year in the bureau's record. Evaluation of the environments in which these tornadoes formed illustrated that these conditions included tornado environments found elsewhere globally, but generally had a stronger dependence on shear magnitude than direction, and lower lifting condensation levels. Relative to local environment climatology, 2013 was also not anomalous. These results illustrate a range of tornadoes associated with cool season, tropical cyclone, east coast low, supercell tornado, and low shear/storm merger environments. Using this baseline, the spatial climatology from 1980 to 2019 as derived from the nonconditional frequency of favorable significant tornado parameter environments for the year is used to highlight that observations are likely an underestimation. Applying the results, discussion is made of the need to expand observing practices, climatology, forecasting guidelines for operational prediction, and improve the warning system. This highlights a need to ensure that the general public is appropriately informed of the tornado hazard in Australia, and provide them with the understanding to respond accordingly. [ABSTRACT FROM AUTHOR]

International Ocean Discovery Program Expedition 369 drilled four sites on the southwestern Australian continental margin, in the deep water Mentelle Basin (MB) and on the neighboring Naturaliste Plateau (NP). The drillsites are located on continental crust that continued rifting after seafloor spreading began further north on the Perth Abyssal Plain (PAP) between magnetochrons M11r and M11n (133–132 Ma), ending when spreading began west of the NP between chrons M5n and M3n (126–124 Ma). Drilling recovered the first in situ samples of basalt flows overlying the breakup unconformity on the NP, establishing a magnetostratigraphically constrained eruption age of >131–133 Ma, and confirming a minimal late Valanginian age for the breakup unconformity (coeval with the onset of PAP seafloor spreading). Petrogenetic modeling indicates the basalts were generated by 25% melting at 1.5 GPa and a potential temperature of 1380°C–1410°C, consistent with proximity of the Kerguelen plume during breakup. Benthic foraminiferal fossils indicate that the NP remained at upper bathyal or shallower depths during the last 6 Myr of rifting and for 3–5 Myr after breakup between India and Australia. The limited subsidence is attributed to heat from the nearby Kerguelen plume and PAP spreading ridge. The margin subsided to middle bathyal depths by Albian time and to lower bathyal (NP) or greater (MB) depths by late Paleogene time. Periods of rapid sedimentation accompanied a westward jump of the PAP spreading ridge (108 Ma), rifting on the southern margin (100–84 Ma), and opening of the southern seaway between Australia and Antarctica (60–47 Ma). Plain Language Summary: The southwestern Australian margin formed during the breakup of the supercontinent Gondwana during the Late Jurassic and Early Cretaceous Periods. International Ocean Discovery Program Expedition 369 drilled four sites on the southwestern Australian rifted continental margin in order to better understand the subsidence and magmatic behavior of the margin during the final stages of rifting. Drilling shows that a widespread unconformity imaged in seismic data on the margin correlates with the onset of seafloor spreading on the Perth Abyssal Plain at 132–133 Ma. This was followed by eruption of basalts on the Naturaliste Plateau, which were generated from melting of the underlying mantle that was enhanced by the nearby Kerguelen mantle plume. Proximity of the plume kept the margin at shallow depths during rifting and for about 3–5 Myr after final separation of India and Australia at 126 Ma. The margin subsided to > 1,000 m depths between about 121 Ma and the present, with intervening periods of relatively rapid sedimentation associated with adjustments to the spreading ridge configuration in the Indian Ocean at 108 Ma, and rifting events between southwestern Australia and Antarctica at 100–84 Ma and 60–47 Ma. Key Points: Continental breakup occurred at 132–133 Ma on the Perth Abyssal Plain and at 126 Ma west of the Naturaliste PlateauVolcanism on the Naturaliste Plateau with both plume and mid‐ocean ridge compositional affinities accompanied Perth Abyssal Plain breakupLate synrift and early postrift subsidence was limited by proximity of the Kerguelen plume and Perth Abyssal Plain spreading ridge [ABSTRACT FROM AUTHOR]

Trees allocate C from sources to sinks by way of a series of processes involving carbohydrate transport and utilization. Yet these dynamics are not well characterized in trees, and it is unclear how these dynamics will respond to a warmer world. Here, we conducted a warming and pulse‐chase experiment on Eucalyptus parramattensis growing in a whole‐tree chamber system to test whether warming impacts carbon allocation by increasing the speed of carbohydrate dynamics. We pulse‐labelled large (6‐m tall) trees with 13C‐CO2 to follow recently fixed C through different organs by using compound‐specific isotope analysis of sugars. We then compared concentrations and mean residence times of individual sugars between ambient and warmed (+3°C) treatments. Trees dynamically allocated 13C‐labelled sugars throughout the aboveground‐belowground continuum. We did not, however, find a significant treatment effect on C dynamics, as sugar concentrations and mean residence times were not altered by warming. From the canopy to the root system, 13C enrichment of sugars decreased, and mean residence times increased, reflecting dilution and mixing of recent photoassimilates with older reserves along the transport pathway. Our results suggest that a locally endemic eucalypt was seemingly able to adjust its physiology to warming representative of future temperature predictions for Australia. This work combined long‐term experimental warming with 13C‐CO2 pulse‐labelling and compound‐specific isotope analysis to trace recent photoassimilates from the leaves to the roots of Eucalyptus parramattensis trees in the field. We compared the concentrations and mean residence times of individual sugars in various organs between ambient and warmed (+3°C) treatments to assess the impact of warming on whole‐tree carbon dynamics. Our results show that carbon dynamics were not altered by warming representative of future temperature predictions for Australia. [ABSTRACT FROM AUTHOR]

Introduction: Many countries are enacting tobacco treatment training, guidelines and policies in order to fulfil Framework Convention on Tobacco Control (FCTC) treaty agreements. This study tapped the perspectives of international treatment providers to identify challenges and recommendations for improvement. Methods: The cross-sectional survey included closed- and open-ended items. Distribution included professional listservs (ATTUD; Global Bridges; ENSH Global) and word-of-mouth. The survey collected data using an open-source platform (Enketo Smart Paper/Ona). We used R for quantitative analysis and Google Sheets to categorize open-ended responses. Results: There were 155 respondents from 49 countries. Most (78.6%) provided direct services. Almost half (48.1%) reported receiving less than 6 hours of tobacco treatment training; respondents from low and lower-middle income countries (LMICs) received significantly less training (Fisher's p < 0.014). Likewise, among all respondents, 43% rated poor access to treatment; this rose to 100% among LMICs (Fisher's p < 0.001). To improve treatment and training, respondents suggested increasing government funding for pharmacotherapy and behavioural services; providing training in local languages and in the treatment of smokeless tobacco forms; trainee certification and access to online support for providers. Conclusions: Globally, half of front-line treatment providers reported having poor access to training; this was true for all providers in LMICs and most in upper middle-income countries. Existing online trainings, available mainly in English, could be migrated to open-access formats to permit countries to tailor them to their local needs and languages. Countries in geographical proximity or historical linguistic/political alliances could forge cross-country mentoring relationships and mutual support for training. [ABSTRACT FROM AUTHOR]

Sentinel hospital surveillance was instituted in Australia to detect the presence of pandemic group A Streptococcus strains causing scarlet fever. Genomic and phylogenetic analyses indicated the presence of an Australian GAS emm12 scarlet fever isolate related to United Kingdom outbreak strains. National surveillance to monitor this pandemic is recommended. [ABSTRACT FROM AUTHOR]

Estimates of abortion rates in Australia suggest that substantial numbers of men are party to an unplanned pregnancy. Although men have no formal legal rights in the decision to terminate a pregnancy, they may be liable to pay child support. The purpose of this 2011 study was to glean young men's perspectives on their role in unplanned pregnancy. In semi-structured in-depth interviews, ten male university students aged 20-23 gave their views on their role in imaginary scenarios and real-life unplanned pregnancy situations ranging from a one-night stand to a two-year relationship. Interviews were transcribed verbatim and thematically analysed. Young men generally expected a higher level of involvement in decision making in longer relationships than in brief liaisons. Those with real-life experiences of abortion tended to think that men should have a greater role in decision-making. Young men felt that it was the woman's right to make the decision on pregnancy outcome, but they still wanted some say if they were financially implicated. Nevertheless, men usually assumed that women were equally motivated to avoid pregnancy and left responsibility for contraception to the woman. Young men were centrally concerned with maintaining face-not being seen as 'deadbeat dads', abandoning mother and child. None expressed religious or moral concerns about abortion. Few men mentioned risk of sexually transmissible infections. Further research should explore the discrepancy between young men's desire to be more involved in the abortion decision-making process and their ambivalence towards contraception responsibility. Sex education should attempt to make the risk of unintended fatherhood more real to male adolescents. Sex education should incorporate discussion of different relationship dilemmas to encourage greater ownership over sexual and reproductive health. [ABSTRACT FROM AUTHOR]

Background Few epidemiological studies of systemic lupus erythematosus ( SLE) have been conducted in Australia, and current management practice and levels of unmet need in this country are not well characterised. Aim To perform a systematic literature review to identify Australia-specific information on SLE, particularly areas of unmet need. Methods MEDLINE, EMBASE and the Cochrane Library were searched (1 January 1990 to 29 November 2013). All articles on prevalence, disease characteristics, management and outcomes of SLE in Australia were included. Results There is limited published information on SLE in Australia. Of 24 articles included, 18 described results from observational studies, three were narrative reviews, one was a clinical update, and two were medical education articles. In remote regions, SLE was reported to be more prevalent in Aboriginal Australians than non-Aboriginal Australians; information in urban populations is lacking. Asian Australians may be more affected by SLE than non-Asian Australians. Pregnancy outcomes may also be adversely affected. Many Australians with SLE may experience high levels of unmet need, including delayed diagnosis, ongoing symptoms, flares, depression/anxiety, sleeping difficulty and decreased quality of life. Published guidance on the SLE management in Australia is limited and dated. Conclusions Published information on SLE in Australia is limited, but suggests that ethnicity may affect the prevalence and disease characteristics and that many Australians with SLE have unmet needs. Improvements in diagnosis, treatment and management are needed to alleviate these needs. Up-to-date guidance on the management of SLE would benefit healthcare professionals and patients. [ABSTRACT FROM AUTHOR]

The conservation and management of endangered species requires an adequate understanding of their biology and ecology. Although there has been an increasing appreciation in Australia of the need for greater efforts to conserve insects, there is only limited information available that can be used to underpin conservation efforts. The endangered golden sun moth, Synemon plana (Lepidoptera: Castniidae) is a flagship species endemic to natural temperate grassland in south-eastern Australia. Most populations of this species are at considerable risk from habitat loss, weed invasion and inadequate management. Despite the considerable knowledge that exists about the species biology and ecology, efforts to improve the species conservation status are hampered because there are still critical gaps in our understanding of the species’ natural history. In particular, the ecology of the larvae is not known. Our study examined the abundance, population structure and reproductive biology of the moths in a broad sample of both natural temperate and exotic grassland remnants in and near Canberra in the Australian Capital Territory (ACT) in south-eastern Australia. The results fill critical gaps in the knowledge needed to achieve effective conservation management. From our findings, it is clear that the species inhabits grasslands dominated by a mixture of native wallaby grasses ( Rytidosperma spp. (formerly Austrodanthonia)) and spear grasses ( Austrostipa spp.). In contrast to earlier suggestions that S. plana is entirely confined to natural temperate grassland, mature and immature life stages of the species were also present in grasslands comprised entirely of the exotic Chilean needlegrass ( Nassella neesiana). Most of the S. plana populations surveyed in the ACT were characterised by low relative abundance with only very few large populations being recorded. The conservation of exotic grasslands as substitute habitat for S. plana is discussed and suggestions regarding future monitoring and research of the species are provided. [ABSTRACT FROM AUTHOR]

Monitoring programs for butterflies and moths are focused on the adult stage, rarely considering other life stages. Transect-based counts of adults and searches for empty pupal cases have been suggested as standard monitoring protocols for the critically endangered golden sun moth Synemon plana in Australia. To date, surveys and monitoring have focused only on counts of adults. However, undertaking such counts is constrained by the short adult life of the species (1-2 days), and the fact that prevailing weather conditions can seriously influence detectability. We tested whether empty pupal cases of S. plana can be used to supplement the monitoring of adults and whether this technique can be undertaken by citizen scientists. Volunteers from Canberra (Australia) collected 650 pupal cases from 11 grassland areas. The cases were found in native grasslands and in grassland comprised entirely of the exotic Chilean needle grass ( Nassella neesiana). Pupal cases of S. plana were found to be durable, with most persisting in the field for greater than 3 weeks after first sighting, and exhibited a male biased sex ratio. This study demonstrates that detection of empty pupal cases provides a potential additional tool to monitor S. plana that is not dependent on the restrictions of prevailing weather conditions and time of day, and can be undertaken by citizen scientists. [ABSTRACT FROM AUTHOR]

Abstract: Identification of the protozoan parasite, Eimeria has traditionally relied on oocyst morphology, host range and life-cycle attributes. However, it is increasingly recognized that Eimeria species can vary in size and shape across their host range, an attribute known as ‘polymorphism’ that presents a unique challenge for identification. Advances in molecular tools hold promise for characterising Eimeria that may otherwise be misclassified based on morphology. Our study used morphologic and molecular traits of the oocyst life stage to identify a polymorphic parasite, Eimeria macropodis in a captive Tammar wallaby (Macropus eugenii) population in Australia. Molecular characterization highlighted the need to use multiple genetic markers (18S SSU and cytochrome c oxidase subunit I) to accurately identify E. macropodis owing to heterozygous alleles at the 18S SSU locus. This study provided an opportunity to assess the utility and shortcomings of morphologic and molecular techniques for ‘pinning down’ a polymorphic species. Moreover, our study was able to place E. macropodis in an evolutionary context and enhance resolution of the under-studied marsupial clade. [Copyright &y& Elsevier]

As a response to extreme water shortages in southeast Queensland, Australia, brought about by reduced rainfall and increasing population, the Queensland government decided to explore the potential for cloud seeding to enhance rainfall. The Queensland Cloud Seeding Research Program (QCSRP) was conducted in the southeast Queensland region near Brisbane during the 2008/09 wet seasons. In addition to conducting an initial exploratory, randomized (statistical) cloud seeding study, multiparameter radar measurements and in situ aircraft microphysical data were collected. This comprehensive set of observational platforms was designed to improve the physical understanding of the effects of both ambient aerosols and seeding material on precipitation formation in southeast Queensland clouds. This focus on gaining physical understanding, along with the unique combination of modern observational platforms utilized in the program, set it apart from previous cloud seeding research programs. The overarching goals of the QCSRP were to 1) determine the characteristics of local cloud systems (i.e., weather and climate), 2) document the properties of atmospheric aerosol and their microphysical effects on precipitation formation, and 3) assess the impact of cloud seeding on cloud microphysical and dynamical processes to enhance rainfall. During the course of the program, it became clear that there is great variability in the natural cloud systems in the southeast Queensland region, and understanding that variability would be necessary before any conclusions could be made regarding the impact of cloud seeding. This article presents research highlights and progress toward achieving the goals of the program, along with the challenges associated with conducting cloud seeding research experiments [ABSTRACT FROM AUTHOR]

The publication of the results of research in distance education in peer-reviewed journals is an important means of communication, dissemination, discourse and reporting of practice in the field. This study is an attempt at analyzing the relationships and influences among these journals. It is based upon a sample of 1416 scholarly articles published over six years in the 12 most widely cited international distance education journals. The bibliographic description and network analysis help us to investigate the structure and patterns of information exchange within the field of distance education research. The analysis of this citation network and the similarities in citation patterns reveals a clear core/periphery structure among distance education journals. The results of this analysis help us to understand the regional, international, impact and influence factors related to publication in these journals and across the field. [ABSTRACT FROM AUTHOR]

Abstract: Elemental and isotopic ratio analyses of U ore concentrate samples, from the 3 operating U mining facilities in Australia, were carried out to determine if significant variations exist between their products, thereby allowing the U ore concentrate’s origin to be identified. Elemental analyses were conducted using inductively coupled plasma mass spectrometry (ICP-MS) and X-ray fluorescence spectrometry (XRF). Lead isotope ratios were measured using ICP-MS and U isotope analyses were conducted using thermal ionisation mass spectrometry (TIMS). Minute quantities of sample, such as that obtained from a swipe, were also examined for elemental concentrations using secondary ion mass spectrometry (SIMS). The results of multivariate statistical analysis show clear patterns in the trace elemental composition of the processed U ores, indicating that it is possible to use this feature as a unique identifier of an Australian U ore concentrate’s source. Secondary ion mass spectrometry analyses also allow individual particles to be differentiated using this ‘fingerprinting’ technique. Isotope ratios determined using TIMS reveal that there is a significant difference in the n(234U)/n(238U) isotope ratio between the U ore concentrate from each mine. [Copyright &y& Elsevier]

Observations of northward-moving borelike convergence lines over the southern part of the Gulf of Carpentaria region of northern Australia are described. Eleven such disturbances were documented during the 45-day period of the 2002 Gulf Lines Experiment. Of these, six were classified as major and five as minor, depending on their coherence throughout the region. The mean synoptic conditions leading to the two types of events were found to differ. The data for the events provide further insight into the structure and origin of borelike disturbances in the region. Two of the major events, those of 28–29 September and 9 October, are particularly noteworthy. The first of these had a clear double-change structure at all surface stations in the southeastern gulf region with an undular borelike wave preceding and separating from an airmass change in the form of a dryline. It is probably one of the best documented cases of its type. The second, which was documented in unprecedented detail by an instrumented research aircraft, consisted of three separate disturbances: one moving from the southeast, one from the south, and one from the northeast, all of which collided over the gulf. It is believed that the aircraft measurements are the first of their kind anywhere in the world. The aircraft made two long low-level transects through the disturbances and a higher-level transect where they were colliding. Various soundings were also made. The aircraft data showed clearly the undular borelike nature of the southeasterly disturbance. Measured vertical velocities in the waves were as high as 3 m s-1 at a mean altitude of about 230 m. Vertical velocities as high as 5 m s-1 were measured in the region of the collision at an altitude of about 1 km. The longevity of the bores is not explained by the vertical structure of the Scorer parameter, which indicates a leaky waveguide. [ABSTRACT FROM AUTHOR]

Observations of dry-season north Australian cloud lines (NACLs) that form in the Gulf of Carpentaria region of northern Australia and the sea-breeze circulations that initiate them are described. The observations were made during the 2002 Gulf Lines Experiment (GLEX) and include measurements made by an instrumented research aircraft. The observations are compared with numerical simulations made from a two-dimensional cloud-scale model. Particular emphasis is placed on the interaction between the east coast and west coast sea breezes near the west coast of Cape York Peninsula. The sea breezes are highly asymmetric due to the low-level easterly synoptic flow over the peninsula. The west coast sea breeze is well defined with a sharp leading edge since the opposing flow limits its inland penetration, keeping it close to its source of cold air. In contrast, the east coast sea breeze is poorly defined since it is aided by the easterly flow and becomes highly modified by daytime convective mixing as it crosses over the peninsula. Both the observations and the numerical model show that, in the early morning hours, the mature NACL forms at the leading edge of a gravity current. The numerical model simulations show that this gravity current arises as a westward-moving land breeze from Cape York Peninsula. Convergence at the leading edge of this land breeze is accompanied by ascent, which when strong enough produces cloud. Observations show that the decay of the NACL is associated with a decline in the low-level convergence and a weakening of the ascent. [ABSTRACT FROM AUTHOR]

Since 1855, 28 species of clam shrimps (Laevicaudata, Spinicaudata, Cyclestherida) have been described from Australia, although three have been synonymized. One new species of Eocyzicus is described herein. It has a distinctive rostrum that is slightly different in male and females and the clasper has a three segmented palp. With this new species the Australian fauna comprises 26 valid species of clam shrimps. We provide a list of all described species, including their known localities and a key to the genera of Australian clam shrimps. [ABSTRACT FROM AUTHOR]

Twelve species in the genera Caenestheria, Caenestheriella, Eocyzicus, Eulimnadia, Limnadia, Limnadopsis, and Lynceus have been collected from intermittent wetlands in the Paroo of northwestern New South Wales and southwestern Queensland. This is the first record of Eocyzicus from Australia. Identifications are partly tentative as the Australian fauna is poorly documented; some species seem to be new. There are many co-occurrences, especially in wetlands connected to others, but generally species are adapted for different ranges of turbidity, salinity and length of the wet phase. The high biodiversity is explained by the presence of many distinct types of wetland, each with its own characteristic species. [ABSTRACT FROM AUTHOR]

Unseasonably cold weather episodes have the potential to cause dislocation to many aspects of society, regardless of the season in which they occur. In this work we devise a method for quantitatively identifying extreme cold events in such a way that it is not biased to the winter season (as is usual in most other studies). We have applied this method to the daily maximum temperatures (over the period January 1972 to June 1991) in the southern Australian cities of Melbourne and Perth. We identify 10 cold events in winter and summer for the cities. Analyses were performed to determine the synoptic environment in which these events occurred. The most common synoptic type in these samples was the `classic', which is characterised by, amongst other factors, the passage of a cold front over the city on the day of the outbreak, and the transport of air from subantarctic latitudes. Melbourne recorded five such events in summer and six in winter, while seven and eight occurred in the two seasons for Perth. The circulation features and characteristics of other synoptic types identified with these episodes is also examined. The mean synoptic anomalies which are coincident with these cold events are analysed. For both cities and seasons there is a `high-low' anomalous dipole in the regional MSLP pattern, with the high located in the `upstream' quadrant from the anomalous cyclone. Having said this, the relative importance of the two features of the dipole in being associated with the cold event strongly depended on the city and season under consideration. The research shows that the regional structures associated with cold events in Melbourne and Perth bear some similarity, but also display a number of significant differences. These differences are associated partly with the different climatological and synoptic settings in which these cities find themselves, and the nature of their seasonality. [ABSTRACT FROM AUTHOR]

Identifies deficiencies in Australian statistical agencies' electronic dissemination practices. Metadata for users; Metadata management systems; Risk of technological change; Use of information technology to improve statistical services.

The article focuses on a 1997 decision by an Australian ministerial council to limit the amount of water that can be drawn from the Murray-Darling River Basin. Topics discussed include reasons behind the council's decision to cap the amount of water extracted from the river basin, status of Australia's water supply during the 1990s and details of the council's capping policy. Also discussed are the lessons that U.S. areas can learn from Australia's method of preventing water scarcity.

Information about several papers discussed at the International Riversymposium and Environmental Flow Conference in Brisbane, Australia on September 3 to 6, 2007 is presented. It was attended by more than 800 delegates from 57 countries to discuss the challenges of protecting the world's rivers. It also featured more than 150 presentations that explores the ongoing degradation of rivers and the socioeconomic effects to the livelihood of people who depended on rivers.

Abstract: Taxonomy and phylogeny within the branchiopod taxon Spinicaudata are still controversial. We analyzed sequences of three gene fragments (28S rRNA, 16S rRNA and COI) from up to 41 species of the Cyzicidae, Limnadiidae and Leptestheriidae to infer their phylogenetic relationships, focusing in particular on species from Australia and their phylogenetic position within Spinicaudata. Four major monophyletic lineages could be distinguished: Limnadiidae, Leptestheriidae, Eocyzicus and all Cyzicidae except Eocyzicus. A clear genetic distinction between Australian and non-Australian Cyzicidae is well supported (i.e. Caenestheria and Caenestheriella species from Australia and Caenestheriella and Cyzicus species from Europe, Asia and North America). In the genera Eocyzicus and Eulimnadia the Australian species were closely related to those from other continents. The species of the Australian endemic genus Limnadopsis and Australian Limnadia species form a monophylum. This suggests that the origin of Limnadopsis lies in Australia and that Limnadia is not monophyletic. [Copyright &y& Elsevier]

The rapid urbanisation and infrastructure development projects have increased infinite property regeneration and construction projects in the developed countries. This study aims to examine the current construction waste management literature, including key authors, university networks, and relevant information systems, considering four selected countries, including Australia, Canada, the United Kingdom, and the United States. This paper uses a set of novel metrics, query-based search, and social network analysis techniques for evaluating a dataset of 2337 papers published in a decade by authors from different countries investigating the topic of recycling and reuse of construction and demolition waste in order to identify prominent researchers, influential universities, collaboration practices, and research trends. The dataset of publications is collected from Scopus and analysed using a set of network analysis techniques and statistical analysis. An additional dataset of keywords was collected from the Twitter pages of engineering firms and other relevant industry organisations to assess any possible connection between industry interests and research trends. In order to present a solid analysis of the current investigations in the field, a scientometric analysis along with a rigor statistical method was adopted to carefully identify trends, detailed sub-topics, and the materials investigated in the literature. A probit regression model for testing differences between countries in recycling practices was utilised in the STATA environment. The findings show a set of network analysis and clusters that can help scholars to set their future studies based on the current advances and limitations identified in the literature. Within the dataset, 42% of publications referred to concrete waste, whilst only 2.2% included glass, 2.5% included brick, 4.3% included steel and none included wood, which shows the most common building materials have not been fully covered in the literature. Only 48 publications, or 7.4% of the dataset, originated from the three selected concrete-focused journals. It was also found that information systems appeared in the database lately; however, there is less discussion in the literature on how the integration of Geographic Information System (GIS), Buidling Information Model (BIM), 3D Printing and geo-spatial data analysis can help waste management in the field of construction. The bibliographic analysis of the selected cases shows that universities in Canada and the US exhibit more evidence of domestic collaboration and industry partnerships than universities in Australia and the UK. Additionally, there is evidence to suggest that publications with at least one industry co-author are more likely to address the issue of regulation. The outcome of this paper enables academics, engineers, and regulators to predict research trends, improve industry collaborations and utilise information systems and assign more research resources to address the identified gaps in the literature. • Developed a network of 1408 authors within the dataset and apply Total Publications metrics. • Examined the collaboration of 529 institutions within Australia, Canada, the UK, and the US. • Utilised a probit regression model for testing differences between countries in recycling practices. • Visualised an online GIS-based dashboard of landfills and recycling facilities using geo-spatial data. • Identified gaps in two different directions of material technology and management systems. [ABSTRACT FROM AUTHOR]

• 16-million-year long history of Eocene sedimentation from the Mentelle Basin. • Astronomically paced variations in deep-sea sedimentation. • Astrochronology from the PETM (∼56 Ma) into the middle Eocene (∼40 Ma). • Contribution towards an Astronomical Time Scale for the entire Cenozoic. The geologic time scale for the Cenozoic Era has been notably improved over the last decades by virtue of integrated stratigraphy, combining high-resolution astrochronologies, biostratigraphy and magnetostratigraphy with high-precision radioisotopic dates. However, the middle Eocene remains a weak link. The so-called "Eocene time scale gap" reflects the scarcity of suitable study sections with clear astronomically-forced variations in carbonate content, primarily because large parts of the oceans were starved of carbonate during the Eocene greenhouse. International Ocean Discovery Program (IODP) Expedition 369 cored a carbonate-rich sedimentary sequence of Eocene age in the Mentelle Basin (Site U1514, offshore southwest Australia). The sequence consists of nannofossil chalk and exhibits rhythmic clay content variability. Here, we show that IODP Site U1514 allows for the extraction of an astronomical signal and the construction of an Eocene astrochronology, using 3-cm resolution X-Ray fluorescence (XRF) core scans. The XRF-derived ratio between calcium and iron content (Ca/Fe) tracks the lithologic variability and serves as the basis for our U1514 astrochronology. We present a 16 million-year-long (40-56 Ma) nearly continuous history of Eocene sedimentation with variations paced by eccentricity and obliquity. We supplement the high-resolution XRF data with low-resolution bulk carbon and oxygen isotopes, recording the long-term cooling trend from the Paleocene-Eocene Thermal Maximum (PETM – ca. 56 Ma) into the middle Eocene (ca. 40 Ma). Our early Eocene astrochronology corroborates existing chronologies based on deep-sea sites and Italian land sections. For the middle Eocene, the sedimentological record at U1514 provides a single-site geochemical backbone and thus offers a further step towards a fully integrated Cenozoic geologic time scale at orbital resolution. [ABSTRACT FROM AUTHOR]

The geologic time scale for the Cenozoic Era significantly improved over the last decades by virtue of advances in radioisotopic dating and the integration of these dates with astrochronologic and cyclostratigraphic results. However, to date the middle Eocene, remains a weak link. This so-called "Eocene astronomical time scale gap" reflects a lack of suitable study sections with clear astronomically forced variations in carbonate content, primarily due to large parts of the Eocene ocean being starved of carbonate. During International Ocean Discovery Program (IODP) Expedition 369, a carbonate-rich sedimentary sequence of Eocene age was recovered at Site U1514 in the Mentelle Basin (southwest Australia). The sequence consists of nannofossil chalk and exhibits a rhythmic character in its clay content. Hence, IODP Site U1514 provides an excellent opportunity to extract an astronomical signal and to construct an Eocene astrochronology. Here, we use X-Ray fluorescence (XRF) core scanning at 3 cm resolution to quantify the clay content variability. The XRF-derived ratio between calcium and iron content (Ca/Fe) precisely tracks the lithologic variability and serves as the basis for the U1514 cyclostratigraphic framework. Our astrochronology reveals a 16 million-year-long (40-56 Ma) nearly continuous history of Eocene sedimentation with variations paced by astronomical climate forcing. We supplement the high-resolution XRF data with low-resolution bulk carbon and oxygen isotopes, recording the long-term cooling trend from the Paleocene-Eocene Thermal Maximum (PETM) to the Middle Eocene Climatic Optimum (MECO). The well-expressed lithological alternations between clay-rich and clay-poor intervals reflect the combined imprints of obliquity and eccentricity. Our early Eocene astrochronology confirms existing chronologies based on deep-sea sites and Italian land sections. For the middle Eocene, the exceptional match of the tuned record at U1514 with astronomical solutions allows us to confirm astrochronologies previously suggested for the equatorial and South Atlantic (Site 702, 1260 and 1263) and to provide an important step towards a fully astronomically calibrated Cenozoic geologic time scale. [ABSTRACT FROM AUTHOR]

Termites sense tiny substrate-borne vibrations through subgenual organs (SGOs) located within their legs' tibiae. Little is known about the SGOs' structure and physical properties. We applied high-resolution (voxel size 0.45 μm) micro-computed tomography (μCT) to Australian termites, Coptotermes lacteus and Nasutitermes exitiosus (Hill) to test two staining techniques. We compared the effectiveness of a single stain of Lugol's iodine solution (LS) to LS followed by Phosphotungstic acid (PTA) solutions (1% and 2%). We then present results of a soldier of Nasutitermes exitiosus combining μCT with LS + 2%PTS stains and scanning electron microscopy to exemplify the visualisation of their SGOs. The termite's SGO due to its approximately oval shape was shown to have a maximum diameter of 60 μm and a minimum of 48 μm, covering 60 ± 4% of the leg's cross-section and 90.4 ± 5% of the residual haemolymph channel. Additionally, the leg and residual haemolymph channel cross-sectional area decreased around the SGO by 33% and 73%, respectively. We hypothesise that this change in cross-sectional area amplifies the vibrations for the SGO. Since SGOs are directly connected to the cuticle, their mechanical properties and the geometric details identified here may enable new approaches to determine how termites sense micro-vibrations., Competing Interests: Declaration of competing interest The authors declare no conflict of interest., (Copyright © 2022 Elsevier Ltd. All rights reserved.)

Melanoma patients with BRAF mutations respond to treatment with vemurafenib, thus creating a need for accurate testing of BRAF mutation status. We carried out a blinded study to evaluate various BRAF mutation testing methodologies in the clinical setting. Formalin-fixed, paraffin-embedded melanoma samples were macrodissected before screening for mutations using Sanger sequencing, single-strand conformation analysis (SSCA), high resolution melting analysis (HRM) and competitive allele-specific TaqMan® PCR (CAST-PCR). Concordance of 100% was observed between the Sanger sequencing, SSCA and HRM techniques. CAST-PCR gave rapid and accurate results for the common V600E and V600K mutations, however additional assays are required to detect rarer BRAF mutation types found in 3-4% of melanomas. HRM and SSCA followed by Sanger sequencing are effective two-step strategies for the detection of BRAF mutations in the clinical setting. CAST-PCR was useful for samples with low tumour purity and may also be a cost-effective and robust method for routine diagnostics.