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The MECA Youth Mentoring Program Evaluation Report
No full textThe MECA Mentoring Program has been running for many years in the Mount Druitt area for young people at local schools. This program received government funding in 2021-2024 to boost its capacity and demonstrate its impacts. The mentoring program is led by MECA in partnerships with Global Skills, TAFE, Headspace, Western Sydney Local Health District, Western Sydney University, and several other community groups and service providers. Program facilitators (MECA staff, mentors, and guest speakers) deliver sessions in schools and take students for excursions to aspire young people and improve their exposure to careers, their employability, and social connections. The evaluation as conducted by Western Sydney University in 2023-2024 using surveys and interviews with the young people who participated in the program, their parents, program facilitators, and community leaders. The MECA mentoring program design is suitable for the needs in the community and is well-accepted by the young people. The program is run within schools during school hours with strong support from teachers and principals. The young people reported that the program was useful for them, and they were satisfied with the overall program, mentors, and guest speakers. Parents also expressed their satisfaction with their children's involvement in the program. Apart from the young people at schools, the mentors in the program (who are mainly young people and often come from the Mount Druitt area) also reported benefits of the program in their personal development. Having mentors who are slightly older but still close to the age of the participants created positive interactions, especially since some mentors share similar backgrounds with the program participants. The young people expressed positive appreciation for the space for fun, learning and safety provided by the MECA mentoring program at schools. We have demonstrated the importance, suitability and positive impacts of the MECA Mentoring Program. The multi-service collaboration under MECA leadership needs to continue and be expanded. Engagement with more schools in the region, and stronger engagement with parents, are likely to improve the positive impacts of the program. The MECA Mentoring Program might work in other similar community settings with deep and continuing consultations with the local communities
[In Press] Uncovering the intensity of climate risk and opportunity : awareness and effectiveness
No full textThis paper examines the effect of awareness regarding climate change risks and opportunities on the proactive carbon management systems of U.S. S&P 500 companies. We develop our hypotheses based on institutional theory, stakeholder theory, and prospect theory. Our findings indicate a significant positive association between our self-constructed measurement of company risk and opportunity awareness and carbon management practices. We observe that financially constrained firms exhibit a lesser response to both climate change risk and opportunity awareness. Additionally, we note that firms with low profitability are more responsive to climate change risks, whereas we found no evidence linking climate change opportunity awareness to carbon management systems, consistent with prospect theory. Finally, we investigate the impact of carbon management systems on carbon reduction performance to examine the effectiveness of such awareness. In summary, this study provides the first evidence of how awareness of climate risk and opportunity influences corporate carbon management practices in a U.S. setting. Our findings imply that awareness serves as the initial step in prompting positive actions to manage risks and capitalize on opportunities. These results offer novel insights and information relevant to the recent policy initiative aimed at transitioning climate risk disclosure from voluntary to mandatory
Durability performance of superabsorbent polymer incorporated concrete modified by nano-silica addition in seasonal frozen regions
No full textIn seasonal frozen regions, ion erosion and freeze-thaw (F-T) cycles threaten pavement concrete durability. This study evaluates the suitability of superabsorbent polymer (SAP) concrete modified by nano silica (NS) for enhancing durability. Tests were conducted to analyze chloride impermeability and frost resistance effects on modified SAP concrete. The coupling impact of ion erosion and freeze-thawing was also evaluated. Mercury intrusion porosimetry (MIP), scanning electron microscopy, and energy dispersive spectrometry were employed to investigate microstructure characteristics. Results demonstrated that NS-modified SAP concrete exhibited high resistance to ion erosion and F-T cycles. Adding 3 % NS reduced the relative dynamic elastic modulus (RDEM) loss by 23.21 % after 300 F-T cycles. The enhancement was more pronounced under the coupled action of ion erosion and freeze-thawing, and the RDEM loss and scaling quantity per unit area of NS-3 % decreased by 13.21 % and 41.48 % respectively, and compressive strength was 28.33 % higher than that of SAP concrete after 135 salt-frost cycles. MIP testing indicated that 3 % NS significantly improved pore structure, reducing deterioration in much harmful pores by 12.82 %. SAP promoted the efficient pozzolanic reaction of NS, generating high-density C-S-H. Additionally, second-hydration products were adsorbed by the ionization of SAP microgel, densifying its shrinkage voids and delaying ITZ width and micro-crack propagation, thereby enhancing concrete durability
Diversity, dissent, and fragmentation in the #MeToo movement : the role of collective and individual dimensions
No full textIntroduction: In this research, we examine how intragroup fragmentation, which is the division of a group into smaller subgroups, interacts with different forms of action against gender inequality. We focused on two types of action: actions that promote social change and actions that encourage retribution.
Methods: We investigated these processes within the #MeToo social movement using data collected in Australia (N = 363) and Romania (N = 135). In both samples, we measured antecedents of ’group consciousness’ (previous experience with discrimination, empathic concern, and perspective taking) and its indicators (social identification, perceived group efficacy beliefs, and group emotions such as anger and contempt). As indicators of intragroup fragmentation, we measured endorsement of different categories of group behaviors such as pro-social change action versus pro-retribution action. To assess the predictive power of motivations for joining the movement (antecedents of group consciousness) and of group consciousness for either pro-social or retributive actions, we tested several structural equation models (SEMs).
Results: Our results indicate that the motivations for joining such social movements were more complex than anticipated, with perspective-taking emerging as a significant differentiator. Our analyses further show that different dimensions of group consciousness could predict support for either pro-social or retributive actions.
Discussion: These findings highlight the complexity of the intragroup processes in newly emerging, modern social movements such as #MeToo. Our findings have implications for the study of membership dynamics in social movements and suggest that strategies to mobilise support should be tailored to these complexities. Overall, this research contributes to the current understanding of intragroup dynamics in contemporary social movements, thereby providing insights that could inform both grassroots mobilisation strategies and policy interventions aiming to increase gender equality
[In Press] Incorporating citizen science into IUCN Red List assessments
No full textMany citizen scientists are highly motivated to help address the current extinction crisis. Their work is making valuable contributions to protecting species by raising awareness, identifying species occurrences, assessing population trends, and informing direct management actions, such as captive breeding. However, clear guidance is lacking about how to use existing citizen science data sets and how to design effective citizen science programs that directly inform extinction risk assessments and resulting conservation actions based on the International Union for Conservation of Nature (IUCN) Red List criteria. This may be because of a mismatch between what citizen science can deliver to address extinction risk and the reality of what is needed to inform threatened species listing based on IUCN criteria. To overcome this problem, we examined each IUCN Red List criterion (A–E) relative to the five major types of citizen science outputs relevant to IUCN assessments (occurrence data, presence–absence observations, structured surveys, physical samples, and narratives) to recommend which outputs are most suited to use when applying the IUCN extinction risk assessment process. We explored real-world examples of citizen science projects on amphibians and fungi that have delivered valuable data and knowledge for IUCN assessments. We found that although occurrence data are routinely used in the assessment process, simply adding more observations of occurrence from citizen science information may not be as valuable as inclusion of more nuanced data types, such as presence–absence data or information on threats from structured surveys. We then explored the characteristics of citizen science projects that have already delivered valuable data to support assessments. These projects were led by recognized experts who champion and validate citizen science data, thereby giving greater confidence in its accuracy. We urge increased recognition of the value of citizen science data within the assessment process
Publicly available Australian hospital data on infant feeding : a review and comparative analysis of outcomes
No full textBackground: Breastfeeding is the optimal method of providing infant nutrition. The Baby Friendly Health Initiative (BFHI) is a global strategy to promote breastfeeding. This study aimed to explore infant feeding data in Australian hospitals and compare outcomes between BFHI and non-BFHI accredited hospitals, and between public and private hospitals.
Methods: We targeted publicly available Australian public and private hospital data on breastfeeding outcomes at discharge from 2018 to 2019. We linked the data to the BFHI accredited hospitals and used t tests to compare mean breastfeeding rates and Chi square or Fisher's exact test for categorical variables.
Findings: Across all Australian states and territories, only New South Wales (NSW) and Victoria (VIC) provided the publicly available target data. Breastfeeding indicators were defined differently between these states. In NSW, breastfeeding at discharge was reported as a full breastfeeding rate among live born infants (71 %) whereas in VIC, it was reported as exclusive breastfeeding rates among term babies only (79 %). Comparing public with private hospitals, the rates of full breastfeeding at discharge in NSW and exclusive breastfeeding in VIC were significantly lower among private non-BFHI accredited hospitals compared to public non-BFHI accredited hospitals.
Conclusion: BFHI accreditation can be beneficial in decreasing the rates of commercial milk formula use. Consistent reinforcement of BFHI principles and implementation in both private and public hospitals is required. Regular state monitoring and national dissemination of aggregated data collected using standardised breastfeeding indicators is also essential
Wild native insects are efficient pollinators of mangoes in the Northern Territory of Australia
No full textMango is an economically important fruit crop in tropical regions, including parts of Australia. However, the contribution of native flower visitors to mango pollination and fruit set is currently understudied. We studied cv. Kensington Pride (KP) in the Northern Territory (NT) of Australia to assess the overall contribution of insect pollinators to fruit set through pollinator exclusion treatments – open pollination, total pollinator exclusion and large pollinator exclusion (>5 mm). We also compared diurnal patterns in insect visitation with mango phenology and determined the pollination effectiveness and efficiency of flower visitors based on visitation rates, foraging behaviour and pollen deposition. At 45 days after the first pollinator survey, the number of fruits per panicle in open and large pollinator exclusion treatments was not significantly different from one another, despite large pollinator exclusion panicles receiving less than half of the number of insect visitations. Furthermore, open and large pollinator exclusion treatments had 28- and 30-times higher numbers of fruits per panicle than the total pollinator exclusion treatment, respectively, showing the importance of insect pollination. The native stingless bee Tetragonula mellipes was the most frequent visitor (7906 visits, 62.7 %), followed by a hover fly Mesembrius bengalensis (2404 visits, 19.1 %). Tetragonula mellipes had the highest mango pollen loads on their bodies and deposited more pollen grains on stigmas per visit than other flower visitors, and contributed 75.5 % to the mango pollination services, about 4.5 times more than the next most important pollinator (M. bengalensis: 16.8 %). Our results suggest that T. mellipes efficiently pollinate mango flowers in the NT when wild colonies are abundant in the native vegetation adjacent to the crop. Placing T. mellipes hives in the centre of larger mango orchards may increase pollination services and potentially farm productivity by ensuring good pollination towards the centre of orchard blocks
[In Press] Neighbourhood diversity effects on insect herbivory : plant leaf traits mediate associational resistance
No full textThe vulnerability of trees to insect herbivory can be influenced by forest structure and diversity. Associational resistance theory posits that trees surrounded by diverse neighbours are likely to suffer reduced herbivory. However, the underlying mechanisms of this effect are debated, with accumulating evidence suggesting that leaf traits could mediate the strength and direction of the diversity-herbivory relationships. To determine the role of tree trait variation in mediating this relationship, we measured leaf herbivory and nine morphological and nutritional leaf traits known to influence herbivory on 394 focal trees of twelve species cultivated in monocultures and mixtures of four, eight, and sixteen species in a 4-year-old large-scale manipulated tree diversity experiment. A reduction in the proportion of focal trees in species-rich neighbourhoods resulted in increased leaf carbon: nitrogen ratio of focal trees, which mediated a reduction in insect herbivory. Moreover, an increase in plant height apparency, defined as the disparity in total height between a focal tree and its closest neighbours, indirectly amplified herbivory by reducing leaf phosphorus concentration. Synthesis: The study suggests that neighbourhood diversity and physical structure can indirectly affect herbivory on a focal plant by modifying its leaf trait. Accounting for the functional differences between forests could enhance our understanding of diversity–herbivory relationships
Cytokine storm in COVID-19 : insight into pathological mechanisms and therapeutic benefits of Chinese herbal medicines
No full textCytokine storm (CS) is the main driver of SARS-CoV-2-induced acute respiratory distress syndrome (ARDS) in severe coronavirus disease-19 (COVID-19). The pathological mechanisms of CS are quite complex and involve multiple critical molecular targets that turn self-limited and mild COVID-19 into a severe and life-threatening concern. At present, vaccines are strongly recommended as safe and effective treatments for preventing serious illness or death from COVID-19. However, effective treatment options are still lacking for people who are at the most risk or hospitalized with severe disease. Chinese herbal medicines have been shown to improve the clinical outcomes of mild to severe COVID-19 as an adjunct therapy, particular preventing the development of mild to severe ARDS. This review illustrates in detail the pathogenesis of CS-involved ARDS and its associated key molecular targets, cytokines and signalling pathways. The therapeutic targets were identified particularly in relation to the turning points of the development of COVID-19, from mild symptoms to severe ARDS. Preclinical and clinical studies were reviewed for the effects of Chinese herbal medicines together with conventional therapies in reducing ARDS symptoms and addressing critical therapeutic targets associated with CS. Multiple herbal formulations, herbal extracts and single bioactive phytochemicals with or without conventional therapies demonstrated strong anti-CS effects through multiple mechanisms. However, evidence from larger, well-designed clinical trials is lacking and their detailed mechanisms of action are yet to be well elucidated. More research is warranted to further evaluate the therapeutic value of Chinese herbal medicine for CS in COVID-19-induced ARDS
Exploring the therapeutic potential of "Xiaochaihu Decoction" : a systematic review and meta-analysis on the clinical effectiveness and safety in managing cancer-related fever
No full textObjective: This study aimed to conduct the first meta-analysis to comprehensively evaluate the clinical effectiveness and safety of Xiaochaihu Decoction in treating Cancer-related Fever (CRF). Methods: Eight databases were systematically searched in September 2023. The risk of bias (ROB) 2.0 tool recommended by Cochrane Handbook was applied to evaluate the ROB of the included randomized controlled trials (RCTs). Additionally, the quality of evidence was assessed using the Grading of recommendations assessment, development and evaluation (GRADE) tool. Results: We included 18 RCTs involving 1,424 patients. Compared to Western medicine or Xinhuang Tablets, Xiaochaihu Decoction significantly improved clinical effectiveness in CRF patients (risk ratio [RR] = 1.24, 95% confidence interval [CI]: 1.17, 1.32) and expedited the normalization of body temperature (mean difference [MD] = -5.29, 95%CI: -5.59, -4.99). It also demonstrated a reduction in tumor necrosis factor-alpha (TNF-alpha) levels (MD = -0.63, 95%CI: -0.84, -0.41) and an increase in IL-2 levels (MD = 1.42, 95%CI: -1.09, 1.74). Analysis of Karnofsky Performance Status (KPS) scores showed that the use of Xiaochaihu Decoction improved the quality of life in CRF patients (RR = 1.57, 95%CI: 1.11, 2.22) and reduced the incidence of adverse events. However, it is important to note that the majority of included studies showed "some concerns" in risk of bias based on ROB 2.0, and the evidence quality assessed by GRADE method was rated as "low". Conclusion: While this study suggests the clinical effectiveness and safety of Xiaochaihu Decoction in treating patients with CRF, confirming these findings will necessitate additional high-quality, large-scale RCTs in future research