Responses of necrophilous beetles to animal mass mortality in the Australian Alps
- Stone, Rebecca, Bonat, Stefanie, Newsome, Thomas, Barton, Philip
- Authors: Stone, Rebecca , Bonat, Stefanie , Newsome, Thomas , Barton, Philip
- Date: 2023
- Type: Text , Journal article
- Relation: Journal of Insect Conservation Vol. 27, no. 6 (2023), p. 865-877
- Full Text:
- Reviewed:
- Description: A diversity of insects can be found at the remains of dead animals (carrion) and they play a vital role in its decomposition and recycling. An emerging global problem with carrion is animal mass mortality events – the sudden, rapid die-off of many animals resulting in a large increase to the localised carrion resource pool. Yet, little is known about how insects respond to sudden and large inputs of carrion. We conducted an experiment in a mountainous alpine region of south-eastern Australia and compared beetle assemblages found at single carcass and mass mortality sites. We also examined the effects of vertebrate exclusion, and decomposition stage on beetles. We found 4,774 beetles representing 146 different species/morphospecies from 17 families. The most abundant species was Saprinus cyaneus cyaneus (Histeridae), and species of Staphylinidae and Silphidae also dominated the fauna, which is typical for necrophilous beetles in Australia. We also found a clear temporal change in beetle assemblages, with abundance and richness peaking during the active decay stage. We found that beetle abundance was greater at single carcasses than mass mortality sites, possibly as an artifact of sampling, and that species richness was similar among these two carcass treatment types. We found no significant effect of vertebrate exclusion on beetles, suggesting that large scavengers in the study system may not influence necrophilous insect communities around carrion. Implications for insect conservation: Our study highlights the diversity of beetles that can be found at carrion and their similar composition to the fauna found in other areas in the south-east of the Australian continent. Beetles may have reduced abundance at mass mortality sites which could affect their ability to contribute to carrion removal relative to smaller carrion quantities. Further research is required to quantify the role of other insects in carrion removal under a range of natural and mass mortality scenarios. © 2023, The Author(s).
- Authors: Stone, Rebecca , Bonat, Stefanie , Newsome, Thomas , Barton, Philip
- Date: 2023
- Type: Text , Journal article
- Relation: Journal of Insect Conservation Vol. 27, no. 6 (2023), p. 865-877
- Full Text:
- Reviewed:
- Description: A diversity of insects can be found at the remains of dead animals (carrion) and they play a vital role in its decomposition and recycling. An emerging global problem with carrion is animal mass mortality events – the sudden, rapid die-off of many animals resulting in a large increase to the localised carrion resource pool. Yet, little is known about how insects respond to sudden and large inputs of carrion. We conducted an experiment in a mountainous alpine region of south-eastern Australia and compared beetle assemblages found at single carcass and mass mortality sites. We also examined the effects of vertebrate exclusion, and decomposition stage on beetles. We found 4,774 beetles representing 146 different species/morphospecies from 17 families. The most abundant species was Saprinus cyaneus cyaneus (Histeridae), and species of Staphylinidae and Silphidae also dominated the fauna, which is typical for necrophilous beetles in Australia. We also found a clear temporal change in beetle assemblages, with abundance and richness peaking during the active decay stage. We found that beetle abundance was greater at single carcasses than mass mortality sites, possibly as an artifact of sampling, and that species richness was similar among these two carcass treatment types. We found no significant effect of vertebrate exclusion on beetles, suggesting that large scavengers in the study system may not influence necrophilous insect communities around carrion. Implications for insect conservation: Our study highlights the diversity of beetles that can be found at carrion and their similar composition to the fauna found in other areas in the south-east of the Australian continent. Beetles may have reduced abundance at mass mortality sites which could affect their ability to contribute to carrion removal relative to smaller carrion quantities. Further research is required to quantify the role of other insects in carrion removal under a range of natural and mass mortality scenarios. © 2023, The Author(s).
Reverse blocking over current busbar protection scheme based on IEC 61850 architecture
- Kumar, Shantanu, Abu-Siada, Ahmed, Das, Narottam, Islam, Syed
- Authors: Kumar, Shantanu , Abu-Siada, Ahmed , Das, Narottam , Islam, Syed
- Date: 2023
- Type: Text , Journal article
- Relation: IEEE Transactions on Industry Applications Vol. 59, no. 2 (2023), p. 2225-2233
- Full Text:
- Reviewed:
- Description: Substation Automation System (SAS) is currently in a matured state of technology that shall facilitate transformational changes from conventional protection scheme. IEC 61850 protocol is considered as the crux of digital SAS due to its multifunction features that include seamless communication, ability to integrate various intelligent electronic devices, potential for improved real-time condition monitoring, reliable protection, and control of critical electrical assets. Because the application of IEC 61850 in SAS is relatively new and has not fully implemented in many substations yet, further feasibility studies using multivendor equipment to assess its performance under different operating conditions is imperative. In this article, a practical reliable and efficient reverse blocking over current bus bar protection scheme based on IEC 61850 is implemented and tested. Also, a comparison of digital SAS and conventional protection scheme is presented to highlight the superiority of the former one. Experimental results attest the reliability and effectiveness of the proposed digital protection scheme along with the accuracy and security of transmitting data packets using sampled values and generic objective-oriented substation event communication protocols adopted by IEC 61850. © 2022 IEEE.
- Authors: Kumar, Shantanu , Abu-Siada, Ahmed , Das, Narottam , Islam, Syed
- Date: 2023
- Type: Text , Journal article
- Relation: IEEE Transactions on Industry Applications Vol. 59, no. 2 (2023), p. 2225-2233
- Full Text:
- Reviewed:
- Description: Substation Automation System (SAS) is currently in a matured state of technology that shall facilitate transformational changes from conventional protection scheme. IEC 61850 protocol is considered as the crux of digital SAS due to its multifunction features that include seamless communication, ability to integrate various intelligent electronic devices, potential for improved real-time condition monitoring, reliable protection, and control of critical electrical assets. Because the application of IEC 61850 in SAS is relatively new and has not fully implemented in many substations yet, further feasibility studies using multivendor equipment to assess its performance under different operating conditions is imperative. In this article, a practical reliable and efficient reverse blocking over current bus bar protection scheme based on IEC 61850 is implemented and tested. Also, a comparison of digital SAS and conventional protection scheme is presented to highlight the superiority of the former one. Experimental results attest the reliability and effectiveness of the proposed digital protection scheme along with the accuracy and security of transmitting data packets using sampled values and generic objective-oriented substation event communication protocols adopted by IEC 61850. © 2022 IEEE.
Review article : use of the team emergency assessment measure in the rating of emergency teams' non-technical skills : a mapping review
- Cooper, Simon, Connell, Clifford, Cant, Robyn
- Authors: Cooper, Simon , Connell, Clifford , Cant, Robyn
- Date: 2023
- Type: Text , Journal article , Review
- Relation: EMA - Emergency Medicine Australasia Vol. 35, no. 3 (2023), p. 375-383
- Full Text:
- Reviewed:
- Description: The present study aims to explore the utility of the Team Emergency Assessment Measure (TEAM) in relation to the enhancement of emergency team non-technical skills based on research conducted over the last decade. In this mapping review, a citation mining process identified 22 primary studies for inclusion, published between 2012 and 2022. It provides outcome data on emergency teams' non-technical skills following team training and/or real-life patient emergencies. Emergency team studies related to resuscitation teams (adult, paediatric, newborn and obstetric cases) and medical emergency team (MET) management of patient deterioration. Team performance ratings varied, ranging from approximately 90% for experienced clinical teams down to 38% for students. Statistically significant improvements in performance were notable following training and/or repeated practice. Validity evidence, across 11 studies that provided change data described positive learning outcomes and moderate intervention effects. However, according to Kirkpatrick's model of educational evaluation the studies were limited to professional development phases of learning and immediate post-training assessments rather than care quality improvement. The review highlights a lack of studies evidencing quality improvement or clinical impact such as change of patient care practice or health service performance. There is a need to conduct well-designed studies that explore both technical and non-technical skills of resuscitation teams and METs. Currently, non-technical skills training and repeated performance evaluations using the TEAM contribute immensely to the proficiency of emergency teams. © 2023 The Authors. Emergency Medicine Australasia published by John Wiley & Sons Australia, Ltd on behalf of Australasian College for Emergency Medicine.
- Authors: Cooper, Simon , Connell, Clifford , Cant, Robyn
- Date: 2023
- Type: Text , Journal article , Review
- Relation: EMA - Emergency Medicine Australasia Vol. 35, no. 3 (2023), p. 375-383
- Full Text:
- Reviewed:
- Description: The present study aims to explore the utility of the Team Emergency Assessment Measure (TEAM) in relation to the enhancement of emergency team non-technical skills based on research conducted over the last decade. In this mapping review, a citation mining process identified 22 primary studies for inclusion, published between 2012 and 2022. It provides outcome data on emergency teams' non-technical skills following team training and/or real-life patient emergencies. Emergency team studies related to resuscitation teams (adult, paediatric, newborn and obstetric cases) and medical emergency team (MET) management of patient deterioration. Team performance ratings varied, ranging from approximately 90% for experienced clinical teams down to 38% for students. Statistically significant improvements in performance were notable following training and/or repeated practice. Validity evidence, across 11 studies that provided change data described positive learning outcomes and moderate intervention effects. However, according to Kirkpatrick's model of educational evaluation the studies were limited to professional development phases of learning and immediate post-training assessments rather than care quality improvement. The review highlights a lack of studies evidencing quality improvement or clinical impact such as change of patient care practice or health service performance. There is a need to conduct well-designed studies that explore both technical and non-technical skills of resuscitation teams and METs. Currently, non-technical skills training and repeated performance evaluations using the TEAM contribute immensely to the proficiency of emergency teams. © 2023 The Authors. Emergency Medicine Australasia published by John Wiley & Sons Australia, Ltd on behalf of Australasian College for Emergency Medicine.
Review of the legacy and future of IEC 61850 protocols encompassing substation automation system
- Kumar, Shantanu, Abu-Siada, Ahmed, Das, Narottam, Islam, Syed
- Authors: Kumar, Shantanu , Abu-Siada, Ahmed , Das, Narottam , Islam, Syed
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Electronics (Switzerland) Vol. 12, no. 15 (2023), p.
- Full Text:
- Reviewed:
- Description: Communication protocols play a pivotal role in the substation automation system as they carry critical information related to asset control, automation, protection, and monitoring. Substation legacy protocols run the assets’ bulk data on multiple wires over long distances. These data packets pass through multiple nodes, which makes the identification of the location and type of various malfunctions a challenging and time-consuming task. As downtime of substations is of high importance from a regulatory and compliance point of view, utilities are motivated to revisit the overall scheme and redesign a new system that features flexibility, adaptability, interoperability, and high accuracy. This paper presents a comprehensive review of various legacy protocols and highlights the path forward for a new protocol laid down as per the IEC 61850 standard. The IEC 61850 protocol is expected to be user-friendly, employ fiber optics instead of conventional copper wires, facilitate the application of non-conventional instrument transformers, and connect Ethernet wires to multiple intelligent electronic devices. However, deployment of smart protocols in future substations is not a straightforward process as it requires careful planning, shutdown and foreseeable issues related to interface with proprietary vendor equipment. Along with the technical issues of communication, future smart protocols call for advanced personnel and engineering skills to embrace the new technology. © 2023 by the authors.
- Authors: Kumar, Shantanu , Abu-Siada, Ahmed , Das, Narottam , Islam, Syed
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Electronics (Switzerland) Vol. 12, no. 15 (2023), p.
- Full Text:
- Reviewed:
- Description: Communication protocols play a pivotal role in the substation automation system as they carry critical information related to asset control, automation, protection, and monitoring. Substation legacy protocols run the assets’ bulk data on multiple wires over long distances. These data packets pass through multiple nodes, which makes the identification of the location and type of various malfunctions a challenging and time-consuming task. As downtime of substations is of high importance from a regulatory and compliance point of view, utilities are motivated to revisit the overall scheme and redesign a new system that features flexibility, adaptability, interoperability, and high accuracy. This paper presents a comprehensive review of various legacy protocols and highlights the path forward for a new protocol laid down as per the IEC 61850 standard. The IEC 61850 protocol is expected to be user-friendly, employ fiber optics instead of conventional copper wires, facilitate the application of non-conventional instrument transformers, and connect Ethernet wires to multiple intelligent electronic devices. However, deployment of smart protocols in future substations is not a straightforward process as it requires careful planning, shutdown and foreseeable issues related to interface with proprietary vendor equipment. Along with the technical issues of communication, future smart protocols call for advanced personnel and engineering skills to embrace the new technology. © 2023 by the authors.
Robust and continuous metric subregularity for linear inequality systems
- Camacho, J., Cánovas, Maria, López, Marco, Parra, Juan
- Authors: Camacho, J. , Cánovas, Maria , López, Marco , Parra, Juan
- Date: 2023
- Type: Text , Journal article
- Relation: Computational Optimization and Applications Vol. 86, no. 3 (2023), p. 967-988
- Full Text:
- Reviewed:
- Description: This paper introduces two new variational properties, robust and continuous metric subregularity, for finite linear inequality systems under data perturbations. The motivation of this study goes back to the seminal work by Dontchev, Lewis, and Rockafellar (2003) on the radius of metric regularity. In contrast to the metric regularity, the unstable continuity behavoir of the (always finite) metric subregularity modulus leads us to consider the aforementioned properties. After characterizing both of them, the radius of robust metric subregularity is computed and some insights on the radius of continuous metric subregularity are provided. © 2022, The Author(s).
- Authors: Camacho, J. , Cánovas, Maria , López, Marco , Parra, Juan
- Date: 2023
- Type: Text , Journal article
- Relation: Computational Optimization and Applications Vol. 86, no. 3 (2023), p. 967-988
- Full Text:
- Reviewed:
- Description: This paper introduces two new variational properties, robust and continuous metric subregularity, for finite linear inequality systems under data perturbations. The motivation of this study goes back to the seminal work by Dontchev, Lewis, and Rockafellar (2003) on the radius of metric regularity. In contrast to the metric regularity, the unstable continuity behavoir of the (always finite) metric subregularity modulus leads us to consider the aforementioned properties. After characterizing both of them, the radius of robust metric subregularity is computed and some insights on the radius of continuous metric subregularity are provided. © 2022, The Author(s).
Rural maternity and media discourse analysis: Framing new narratives
- Brundell, Kath, Vasilevski, Vidanka, Farrell, Tanya, Sweet, Linda
- Authors: Brundell, Kath , Vasilevski, Vidanka , Farrell, Tanya , Sweet, Linda
- Date: 2023
- Type: Text , Journal article
- Relation: Australian Journal of Rural Health Vol. 31, no. 3 (2023), p. 395-407
- Full Text:
- Reviewed:
- Description: Continued rural maternity closure across Australia has seen impacts on women and families such as financial pressures, quality and safety concerns, and emotional pressure. This review aimed at understanding how media coverage of rural maternity and closure are presented and what impact this may have on maternity service sustainability. This research seeks to examine media discourse and characteristics of online newspaper articles related to rural maternity services. A narrative review was conducted using thematic discourse analysis to examine online newspaper content published in Victoria, Australia from 2010 to June 2021. Local maternity services were a source of community interest for rural people. Coverage of negative outcomes for mothers and babies was highlighted by rural newspapers however, increased content over the last 12-month period focused on community support for the sustainability of rural maternity services. Recent community support in newspaper articles coincided with maternity services reviews and retaining some of these rural services. Community support in media may provide a protective social pressure, leading rural health services to consider this when reviewing the sustainability or closure of rural maternity services. Media attention about sustaining local maternity services by highlighting issues and representing community voices may influence health executive to consider opportunities to remodel and sustain high-quality and safe maternity care in rural settings. Knowing how rural health executives consider media, community pressure, and how it impacts expediency of maternity service closure decisions is unknown and an important gap in knowledge to explore and understand.
- Authors: Brundell, Kath , Vasilevski, Vidanka , Farrell, Tanya , Sweet, Linda
- Date: 2023
- Type: Text , Journal article
- Relation: Australian Journal of Rural Health Vol. 31, no. 3 (2023), p. 395-407
- Full Text:
- Reviewed:
- Description: Continued rural maternity closure across Australia has seen impacts on women and families such as financial pressures, quality and safety concerns, and emotional pressure. This review aimed at understanding how media coverage of rural maternity and closure are presented and what impact this may have on maternity service sustainability. This research seeks to examine media discourse and characteristics of online newspaper articles related to rural maternity services. A narrative review was conducted using thematic discourse analysis to examine online newspaper content published in Victoria, Australia from 2010 to June 2021. Local maternity services were a source of community interest for rural people. Coverage of negative outcomes for mothers and babies was highlighted by rural newspapers however, increased content over the last 12-month period focused on community support for the sustainability of rural maternity services. Recent community support in newspaper articles coincided with maternity services reviews and retaining some of these rural services. Community support in media may provide a protective social pressure, leading rural health services to consider this when reviewing the sustainability or closure of rural maternity services. Media attention about sustaining local maternity services by highlighting issues and representing community voices may influence health executive to consider opportunities to remodel and sustain high-quality and safe maternity care in rural settings. Knowing how rural health executives consider media, community pressure, and how it impacts expediency of maternity service closure decisions is unknown and an important gap in knowledge to explore and understand.
Rurality as a predictor of perinatal mental health and well-being in an Australian cohort
- Galbally, Megan, Watson, Stuart, Coleman, Mathew, Worley, Paul, Verrier, Leanda, Padmanabhan, Vineet, Lewis, Andrew
- Authors: Galbally, Megan , Watson, Stuart , Coleman, Mathew , Worley, Paul , Verrier, Leanda , Padmanabhan, Vineet , Lewis, Andrew
- Date: 2023
- Type: Text , Journal article
- Relation: Australian Journal of Rural Health Vol. 31, no. 2 (2023), p. 182-195
- Full Text:
- Reviewed:
- Description: Objective: Perinatal emotional well-being is more than the presence or absence of depressive and anxiety disorders; it encompasses a wide range of factors that contribute to emotional well-being. This study compares perinatal well-being between women living in metropolitan and rural regions. Design: Prospective, longitudinal cohort. Participants/setting: Eight hundred and six women from Victoria and Western Australia recruited before 20 weeks of pregnancy and followed up to 12 months postpartum. Main outcome measures: Rurality was assessed using the Modified Monash Model (MM Model) with 578 in metropolitan cities MM1, 185 in regional and large rural towns MM2-MM3 and 43 in rural to remote MM4-MM7. The Structured Clinical Interview for DSM-IV (SCID-IV) was administered at recruitment to assess depression, and symptoms of depression and anxiety were measured using the Edinburgh Post-natal Depression Scale and the State and Trait Anxiety Scale, respectively. Other measures included stressful events, diet, exercise, partner support, parenting and sleep. Results: The prevalence of depressive disorders did not differ across rurality. There was also no difference in breastfeeding cessation, exercise, sleep or partner support. Women living in rural communities and who also had depression reported significantly higher parenting stress than metropolitan women and lower access to parenting activities. Conclusions: Our study suggests while many of the challenges of the perinatal period were shared between women in all areas, there were important differences in parenting stress and access to activities. Furthermore, these findings suggest that guidelines and interventions designed for perinatal mental health should consider rurality. © 2022 The Authors. Australian Journal of Rural Health published by John Wiley & Sons Australia, Ltd on behalf of National Rural Health Alliance Ltd.
- Authors: Galbally, Megan , Watson, Stuart , Coleman, Mathew , Worley, Paul , Verrier, Leanda , Padmanabhan, Vineet , Lewis, Andrew
- Date: 2023
- Type: Text , Journal article
- Relation: Australian Journal of Rural Health Vol. 31, no. 2 (2023), p. 182-195
- Full Text:
- Reviewed:
- Description: Objective: Perinatal emotional well-being is more than the presence or absence of depressive and anxiety disorders; it encompasses a wide range of factors that contribute to emotional well-being. This study compares perinatal well-being between women living in metropolitan and rural regions. Design: Prospective, longitudinal cohort. Participants/setting: Eight hundred and six women from Victoria and Western Australia recruited before 20 weeks of pregnancy and followed up to 12 months postpartum. Main outcome measures: Rurality was assessed using the Modified Monash Model (MM Model) with 578 in metropolitan cities MM1, 185 in regional and large rural towns MM2-MM3 and 43 in rural to remote MM4-MM7. The Structured Clinical Interview for DSM-IV (SCID-IV) was administered at recruitment to assess depression, and symptoms of depression and anxiety were measured using the Edinburgh Post-natal Depression Scale and the State and Trait Anxiety Scale, respectively. Other measures included stressful events, diet, exercise, partner support, parenting and sleep. Results: The prevalence of depressive disorders did not differ across rurality. There was also no difference in breastfeeding cessation, exercise, sleep or partner support. Women living in rural communities and who also had depression reported significantly higher parenting stress than metropolitan women and lower access to parenting activities. Conclusions: Our study suggests while many of the challenges of the perinatal period were shared between women in all areas, there were important differences in parenting stress and access to activities. Furthermore, these findings suggest that guidelines and interventions designed for perinatal mental health should consider rurality. © 2022 The Authors. Australian Journal of Rural Health published by John Wiley & Sons Australia, Ltd on behalf of National Rural Health Alliance Ltd.
Securing smart healthcare cyber-physical systems against blackhole and greyhole attacks using a blockchain-enabled gini index framework
- Javed, Mannan, Tariq, Noshina, Ashraf, Muhammad, Khan, Farrukh, Asim, Muhammad, Imran, Muhammad
- Authors: Javed, Mannan , Tariq, Noshina , Ashraf, Muhammad , Khan, Farrukh , Asim, Muhammad , Imran, Muhammad
- Date: 2023
- Type: Text , Journal article
- Relation: Sensors Vol. 23, no. 23 (2023), p.
- Full Text:
- Reviewed:
- Description: The increasing reliance on cyber-physical systems (CPSs) in critical domains such as healthcare, smart grids, and intelligent transportation systems necessitates robust security measures to protect against cyber threats. Among these threats, blackhole and greyhole attacks pose significant risks to the availability and integrity of CPSs. The current detection and mitigation approaches often struggle to accurately differentiate between legitimate and malicious behavior, leading to ineffective protection. This paper introduces Gini-index and blockchain-based Blackhole/Greyhole RPL (GBG-RPL), a novel technique designed for efficient detection and mitigation of blackhole and greyhole attacks in smart health monitoring CPSs. GBG-RPL leverages the analytical prowess of the Gini index and the security advantages of blockchain technology to protect these systems against sophisticated threats. This research not only focuses on identifying anomalous activities but also proposes a resilient framework that ensures the integrity and reliability of the monitored data. GBG-RPL achieves notable improvements as compared to another state-of-the-art technique referred to as BCPS-RPL, including a 7.18% reduction in packet loss ratio, an 11.97% enhancement in residual energy utilization, and a 19.27% decrease in energy consumption. Its security features are also very effective, boasting a 10.65% improvement in attack-detection rate and an 18.88% faster average attack-detection time. GBG-RPL optimizes network management by exhibiting a 21.65% reduction in message overhead and a 28.34% decrease in end-to-end delay, thus showing its potential for enhanced reliability, efficiency, and security. © 2023 by the authors.
- Authors: Javed, Mannan , Tariq, Noshina , Ashraf, Muhammad , Khan, Farrukh , Asim, Muhammad , Imran, Muhammad
- Date: 2023
- Type: Text , Journal article
- Relation: Sensors Vol. 23, no. 23 (2023), p.
- Full Text:
- Reviewed:
- Description: The increasing reliance on cyber-physical systems (CPSs) in critical domains such as healthcare, smart grids, and intelligent transportation systems necessitates robust security measures to protect against cyber threats. Among these threats, blackhole and greyhole attacks pose significant risks to the availability and integrity of CPSs. The current detection and mitigation approaches often struggle to accurately differentiate between legitimate and malicious behavior, leading to ineffective protection. This paper introduces Gini-index and blockchain-based Blackhole/Greyhole RPL (GBG-RPL), a novel technique designed for efficient detection and mitigation of blackhole and greyhole attacks in smart health monitoring CPSs. GBG-RPL leverages the analytical prowess of the Gini index and the security advantages of blockchain technology to protect these systems against sophisticated threats. This research not only focuses on identifying anomalous activities but also proposes a resilient framework that ensures the integrity and reliability of the monitored data. GBG-RPL achieves notable improvements as compared to another state-of-the-art technique referred to as BCPS-RPL, including a 7.18% reduction in packet loss ratio, an 11.97% enhancement in residual energy utilization, and a 19.27% decrease in energy consumption. Its security features are also very effective, boasting a 10.65% improvement in attack-detection rate and an 18.88% faster average attack-detection time. GBG-RPL optimizes network management by exhibiting a 21.65% reduction in message overhead and a 28.34% decrease in end-to-end delay, thus showing its potential for enhanced reliability, efficiency, and security. © 2023 by the authors.
Sedimentary layers : Bob Hawke’s beer world record and ocker chic
- Authors: Coventry, C. J.
- Date: 2023
- Type: Text , Journal article
- Relation: Journal of Australian Studies Vol. 47, no. 3 (2023), p. 478-496
- Full Text:
- Reviewed:
- Description: Australia’s 23rd prime minister, Bob Hawke, is celebrated for a world record set at the University of Oxford in the 1950s for the fastest consumption of a yard of ale. The beer record is apocryphal, having five evidential flaws. However, the embellishment—or fabrication—of the record was crucial to the “larrikin-leader” dual image Hawke constructed over the course of the 1970s as he manoeuvred to enter parliament. Hawke’s dual image appealed widely from the 1970s onwards because of the rise of the “ocker”: a middle-class caricature of Australians. By the 1980s, a refined “ocker chic” identity had emerged in which the middle class could erect a national culture that feigned meritocracy. In the 2020s, politicians, professionals, performative fathers and others identify with an ahistorical nation in which irreverence, elasticated leather boots, cowboy hats, Bavarian-style cold beer, and stories of endurance in foreign lands help to conceal their privilege. While many commentators have tried to explain this phenomenon, Diane Kirkby’s formulation of ocker chic reveals the interchange between class, gender and race that has preserved neoliberal capitalism in Australia. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
- Authors: Coventry, C. J.
- Date: 2023
- Type: Text , Journal article
- Relation: Journal of Australian Studies Vol. 47, no. 3 (2023), p. 478-496
- Full Text:
- Reviewed:
- Description: Australia’s 23rd prime minister, Bob Hawke, is celebrated for a world record set at the University of Oxford in the 1950s for the fastest consumption of a yard of ale. The beer record is apocryphal, having five evidential flaws. However, the embellishment—or fabrication—of the record was crucial to the “larrikin-leader” dual image Hawke constructed over the course of the 1970s as he manoeuvred to enter parliament. Hawke’s dual image appealed widely from the 1970s onwards because of the rise of the “ocker”: a middle-class caricature of Australians. By the 1980s, a refined “ocker chic” identity had emerged in which the middle class could erect a national culture that feigned meritocracy. In the 2020s, politicians, professionals, performative fathers and others identify with an ahistorical nation in which irreverence, elasticated leather boots, cowboy hats, Bavarian-style cold beer, and stories of endurance in foreign lands help to conceal their privilege. While many commentators have tried to explain this phenomenon, Diane Kirkby’s formulation of ocker chic reveals the interchange between class, gender and race that has preserved neoliberal capitalism in Australia. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Sensitivity analysis on blast design parameters to improve bench blasting outcomes using the Taguchi method
- Hosseini, Mostafa, Khandelwal, Manoj, Lotfi, Rahman, Eslahi, Mohsen
- Authors: Hosseini, Mostafa , Khandelwal, Manoj , Lotfi, Rahman , Eslahi, Mohsen
- Date: 2023
- Type: Text , Journal article
- Relation: Geomechanics and Geophysics for Geo-Energy and Geo-Resources Vol. 9, no. 1 (2023), p.
- Full Text:
- Reviewed:
- Description: In surface mines, bench blasting is a typical way of excavating hard rock mass. Although a significant development has taken place in explosive technology but still only a part of the energy is used to excavate and a large proportion of energy is wasted away and creates a number of nuisances. Backbreak, massive rock fragmentation, and high-intensity ground vibration are all symptoms of improper blasting. As a result, production costs increase significantly while productivity decreases. The blasting outcomes are affected by a variety of factors, which may be classified into three categories: rock properties, explosive properties, and blast geometry. Consequently, it is necessary to examine the effect of these parameters on bench blasting. So, in this study, a sensitivity analysis has been performed on various blast design parameters using the Taguchi method to study the influence of blast design parameters on blast vibration, backbreak, and rock fragmentation. A total of 32 experiments have been designed and numerical modeling was also carried out, using LS DYNA software to simulate the blast results. It was found that the blast hole diameter is the most important factor influencing the blasting outcomes. However, the number of rows in a blast affects backbreak almost slightly more than the hole diameter, but blast vibrations and the surrounding rock damage strongly depend on the hole diameter. Furthermore, rock blast geometry significantly affected rock blast vibration and damage compared to explosive properties. However, both blast geometry parameters and explosive properties play a significant role in backbreaking. © 2023, The Author(s).
- Authors: Hosseini, Mostafa , Khandelwal, Manoj , Lotfi, Rahman , Eslahi, Mohsen
- Date: 2023
- Type: Text , Journal article
- Relation: Geomechanics and Geophysics for Geo-Energy and Geo-Resources Vol. 9, no. 1 (2023), p.
- Full Text:
- Reviewed:
- Description: In surface mines, bench blasting is a typical way of excavating hard rock mass. Although a significant development has taken place in explosive technology but still only a part of the energy is used to excavate and a large proportion of energy is wasted away and creates a number of nuisances. Backbreak, massive rock fragmentation, and high-intensity ground vibration are all symptoms of improper blasting. As a result, production costs increase significantly while productivity decreases. The blasting outcomes are affected by a variety of factors, which may be classified into three categories: rock properties, explosive properties, and blast geometry. Consequently, it is necessary to examine the effect of these parameters on bench blasting. So, in this study, a sensitivity analysis has been performed on various blast design parameters using the Taguchi method to study the influence of blast design parameters on blast vibration, backbreak, and rock fragmentation. A total of 32 experiments have been designed and numerical modeling was also carried out, using LS DYNA software to simulate the blast results. It was found that the blast hole diameter is the most important factor influencing the blasting outcomes. However, the number of rows in a blast affects backbreak almost slightly more than the hole diameter, but blast vibrations and the surrounding rock damage strongly depend on the hole diameter. Furthermore, rock blast geometry significantly affected rock blast vibration and damage compared to explosive properties. However, both blast geometry parameters and explosive properties play a significant role in backbreaking. © 2023, The Author(s).
Serum antinuclear autoantibodies are associated with measures of oxidative stress and lifestyle factors : analysis of LIPIDOGRAM2015 and LIPIDOGEN2015 studies
- Krzemień, Pawel, Kasperczyk, S, Banach, Maciej, Kasperczyk, Aleksandra, Dobrakowski, Michal, Tomasik, Tomasz, Windak, Adam, Mastej, Miroslaw, Catapano, Alberico, Ray, Kausik, Mikhailidis, Dimitri, Toth, Peter, Howard, George, Lip, Gregory, Tomaszewski, Maciej, Charchar, Fadi, Sattar, Naveed, Williams, Bryan, MacDonald, Thomas, Penson, Peter, Jóźwiak, Jacek
- Authors: Krzemień, Pawel , Kasperczyk, S , Banach, Maciej , Kasperczyk, Aleksandra , Dobrakowski, Michal , Tomasik, Tomasz , Windak, Adam , Mastej, Miroslaw , Catapano, Alberico , Ray, Kausik , Mikhailidis, Dimitri , Toth, Peter , Howard, George , Lip, Gregory , Tomaszewski, Maciej , Charchar, Fadi , Sattar, Naveed , Williams, Bryan , MacDonald, Thomas , Penson, Peter , Jóźwiak, Jacek
- Date: 2023
- Type: Text , Journal article
- Relation: Archives of Medical Science Vol. 19, no. 5 (2023), p. 1214-1227
- Full Text:
- Reviewed:
- Description: Introduction: Oxidative stress is one of many factors suspected to promote antinuclear autoantibody (ANA) formation. Reactive oxygen species can induce changes in the antigenic structure of macromolecules, causing the immune system to treat them as “neo-antigens” and start production of autoantibodies. This study was designed to evaluate the relationship between oxidative stress markers, lifestyle factors and the detection of ANA. Material and methods: We examined measures of oxidative stress indices of free-radical damage to lipids and proteins, such as total oxidant status (TOS), concentration of protein thiol groups (PSH), and malondialdehyde (MDA), activity of superoxide dismutase (SOD) in 1731 serum samples. The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid (UA) concentration, were also measured and the oxidative stress index (OSI-index) was calculated. All samples were tested for the presence of ANA using an indirect immunofluorescence assay (IIFA). Results: The presence of ANA in women was associated with lower physical activity (p = 0.036), less frequent smoking (p = 0.007) and drinking of alcohol (p = 0.024) accompanied by significant changes in SOD isoenzymes activity (p < 0.001) and a higher uric acid (UA) concentration (p < 0.001). In ANA positive males we observed lower concentrations of PSH (p = 0.046) and increased concentrations of MDA (p = 0.047). Conclusions: The results indicate that local oxidative stress may be associated with increased probability of ANA formation in a sex-specific manner. © 2021 Termedia & Banach.
- Authors: Krzemień, Pawel , Kasperczyk, S , Banach, Maciej , Kasperczyk, Aleksandra , Dobrakowski, Michal , Tomasik, Tomasz , Windak, Adam , Mastej, Miroslaw , Catapano, Alberico , Ray, Kausik , Mikhailidis, Dimitri , Toth, Peter , Howard, George , Lip, Gregory , Tomaszewski, Maciej , Charchar, Fadi , Sattar, Naveed , Williams, Bryan , MacDonald, Thomas , Penson, Peter , Jóźwiak, Jacek
- Date: 2023
- Type: Text , Journal article
- Relation: Archives of Medical Science Vol. 19, no. 5 (2023), p. 1214-1227
- Full Text:
- Reviewed:
- Description: Introduction: Oxidative stress is one of many factors suspected to promote antinuclear autoantibody (ANA) formation. Reactive oxygen species can induce changes in the antigenic structure of macromolecules, causing the immune system to treat them as “neo-antigens” and start production of autoantibodies. This study was designed to evaluate the relationship between oxidative stress markers, lifestyle factors and the detection of ANA. Material and methods: We examined measures of oxidative stress indices of free-radical damage to lipids and proteins, such as total oxidant status (TOS), concentration of protein thiol groups (PSH), and malondialdehyde (MDA), activity of superoxide dismutase (SOD) in 1731 serum samples. The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid (UA) concentration, were also measured and the oxidative stress index (OSI-index) was calculated. All samples were tested for the presence of ANA using an indirect immunofluorescence assay (IIFA). Results: The presence of ANA in women was associated with lower physical activity (p = 0.036), less frequent smoking (p = 0.007) and drinking of alcohol (p = 0.024) accompanied by significant changes in SOD isoenzymes activity (p < 0.001) and a higher uric acid (UA) concentration (p < 0.001). In ANA positive males we observed lower concentrations of PSH (p = 0.046) and increased concentrations of MDA (p = 0.047). Conclusions: The results indicate that local oxidative stress may be associated with increased probability of ANA formation in a sex-specific manner. © 2021 Termedia & Banach.
Simplifying qualitative case study research methodology : a step-by-step guide using a palliative care example
- Miller, Elizabeth, Porter, Joanne, Barbagallo, Michael
- Authors: Miller, Elizabeth , Porter, Joanne , Barbagallo, Michael
- Date: 2023
- Type: Text , Journal article
- Relation: Qualitative Report Vol. 28, no. 8 (2023), p. 2363-2379
- Full Text:
- Reviewed:
- Description: Qualitative case study research can be a helpful methodology when conducting health research. However, it can be overlooked or dismissed as a possible methodological choice due to different epistemological positionings by case study theorists and often confusing and contradictory definitions and terminology. Much has been written about case studies, but it takes time to wade through volumes of often philosophically and methodologically dense material to locate a theorist who presents case study research at a depth the novice researcher can understand. Case study research literature may offer a condensed summary of processes but often needs more theoretical detail. Therefore, discerning where to begin can be time-consuming, frustrating, and overwhelming. There are very few qualitative case study protocols and no step-by-step guide describing the planning and decision-making process within nursing. To address the need for clarity, this article endeavors to set out how to conduct a qualitative case study in a step-by-step guide using the approaches of Merriam and Stake as the foundation using a palliative care setting as an application example. It contributes to knowledge and practice by developing a foundational understanding of case study methodology in the hope that novice researchers will consider case study research as a methodological choice for their study and conduct it in a trustworthy and rigorous manner. Copyright 2023: Elizabeth M. Miller, Joanne E. Porter, Michael S. Barbagallo, and Nova Southeastern University.
- Authors: Miller, Elizabeth , Porter, Joanne , Barbagallo, Michael
- Date: 2023
- Type: Text , Journal article
- Relation: Qualitative Report Vol. 28, no. 8 (2023), p. 2363-2379
- Full Text:
- Reviewed:
- Description: Qualitative case study research can be a helpful methodology when conducting health research. However, it can be overlooked or dismissed as a possible methodological choice due to different epistemological positionings by case study theorists and often confusing and contradictory definitions and terminology. Much has been written about case studies, but it takes time to wade through volumes of often philosophically and methodologically dense material to locate a theorist who presents case study research at a depth the novice researcher can understand. Case study research literature may offer a condensed summary of processes but often needs more theoretical detail. Therefore, discerning where to begin can be time-consuming, frustrating, and overwhelming. There are very few qualitative case study protocols and no step-by-step guide describing the planning and decision-making process within nursing. To address the need for clarity, this article endeavors to set out how to conduct a qualitative case study in a step-by-step guide using the approaches of Merriam and Stake as the foundation using a palliative care setting as an application example. It contributes to knowledge and practice by developing a foundational understanding of case study methodology in the hope that novice researchers will consider case study research as a methodological choice for their study and conduct it in a trustworthy and rigorous manner. Copyright 2023: Elizabeth M. Miller, Joanne E. Porter, Michael S. Barbagallo, and Nova Southeastern University.
Sin, cos, exp and log of Liouville numbers
- Chalebgwa, Taboka, Morris, Sidney
- Authors: Chalebgwa, Taboka , Morris, Sidney
- Date: 2023
- Type: Text , Journal article
- Relation: Bulletin of the Australian Mathematical Society Vol. 108, no. 1 (2023), p. 81-85
- Full Text:
- Reviewed:
- Description: For any Liouville number, all of the following are transcendental numbers:, and the inverse functions evaluated at of the listed trigonometric and hyperbolic functions, noting that wherever multiple values are involved, every such value is transcendental. This remains true if 'Liouville number' is replaced by 'U-number', where U is one of Mahler's classes of transcendental numbers. © The Author(s), 2022. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.
- Authors: Chalebgwa, Taboka , Morris, Sidney
- Date: 2023
- Type: Text , Journal article
- Relation: Bulletin of the Australian Mathematical Society Vol. 108, no. 1 (2023), p. 81-85
- Full Text:
- Reviewed:
- Description: For any Liouville number, all of the following are transcendental numbers:, and the inverse functions evaluated at of the listed trigonometric and hyperbolic functions, noting that wherever multiple values are involved, every such value is transcendental. This remains true if 'Liouville number' is replaced by 'U-number', where U is one of Mahler's classes of transcendental numbers. © The Author(s), 2022. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.
Single-dose pharmacokinetics and lung function of nebulized niclosamide ethanolamine in sheep
- Weiss, Anne, Bischof, Robert, Landersdorfer, Cornelia, Nguyen, Tri-Hung, Davies, Andrew, Ibrahim, Jibrill, Wynne, Paul, Wright, Phillip, Ditzinger, Gunter, Montgomery, Alan, Meeusen, Els, McIntosh, Michelle, Sommer, Morten
- Authors: Weiss, Anne , Bischof, Robert , Landersdorfer, Cornelia , Nguyen, Tri-Hung , Davies, Andrew , Ibrahim, Jibrill , Wynne, Paul , Wright, Phillip , Ditzinger, Gunter , Montgomery, Alan , Meeusen, Els , McIntosh, Michelle , Sommer, Morten
- Date: 2023
- Type: Text , Journal article
- Relation: Pharmaceutical Research Vol. 40, no. 8 (2023), p. 1915-1925
- Full Text:
- Reviewed:
- Description: Purpose: Niclosamide is approved as an oral anthelminthic, but its low oral bioavailability hinders its medical use requiring high drug exposure outside the gastrointestinal tract. An optimized solution of niclosamide for nebulization and intranasal administration using the ethanolamine salt has been developed and tested in a Phase 1 trial. In this study we investigate the pulmonary exposure of niclosamide following administration via intravenous injection, oral administration or nebulization. Methods: We characterized the plasma and pulmonary pharmacokinetics of three ascending doses of nebulized niclosamide in sheep, compare it to intravenous niclosamide for compartmental PK modelling, and to the human equivalent approved 2 g oral dose to investigate in the pulmonary exposure of different niclosamide delivery routes. Following a single-dose administration to five sheep, niclosamide concentrations were determined in plasma and epithelial lining fluid (ELF). Non-compartmental and compartmental modeling was used to characterize pharmacokinetic profiles. Lung function tests were performed in all dose groups. Results: Administration of all niclosamide doses were well tolerated with no adverse changes in lung function tests. Plasma pharmacokinetics of nebulized niclosamide behaved dose-linear and was described by a 3-compartmental model estimating an absolute bioavailability of 86%. ELF peak concentration and area under the curve was 578 times and 71 times higher with nebulization of niclosamide relative to administration of oral niclosamide. Conclusions: Single local pulmonary administration of niclosamide via nebulization was well tolerated in sheep and resulted in substantially higher peak ELF concentration compared to the human equivalent oral 2 g dose. © 2023, The Author(s).
- Authors: Weiss, Anne , Bischof, Robert , Landersdorfer, Cornelia , Nguyen, Tri-Hung , Davies, Andrew , Ibrahim, Jibrill , Wynne, Paul , Wright, Phillip , Ditzinger, Gunter , Montgomery, Alan , Meeusen, Els , McIntosh, Michelle , Sommer, Morten
- Date: 2023
- Type: Text , Journal article
- Relation: Pharmaceutical Research Vol. 40, no. 8 (2023), p. 1915-1925
- Full Text:
- Reviewed:
- Description: Purpose: Niclosamide is approved as an oral anthelminthic, but its low oral bioavailability hinders its medical use requiring high drug exposure outside the gastrointestinal tract. An optimized solution of niclosamide for nebulization and intranasal administration using the ethanolamine salt has been developed and tested in a Phase 1 trial. In this study we investigate the pulmonary exposure of niclosamide following administration via intravenous injection, oral administration or nebulization. Methods: We characterized the plasma and pulmonary pharmacokinetics of three ascending doses of nebulized niclosamide in sheep, compare it to intravenous niclosamide for compartmental PK modelling, and to the human equivalent approved 2 g oral dose to investigate in the pulmonary exposure of different niclosamide delivery routes. Following a single-dose administration to five sheep, niclosamide concentrations were determined in plasma and epithelial lining fluid (ELF). Non-compartmental and compartmental modeling was used to characterize pharmacokinetic profiles. Lung function tests were performed in all dose groups. Results: Administration of all niclosamide doses were well tolerated with no adverse changes in lung function tests. Plasma pharmacokinetics of nebulized niclosamide behaved dose-linear and was described by a 3-compartmental model estimating an absolute bioavailability of 86%. ELF peak concentration and area under the curve was 578 times and 71 times higher with nebulization of niclosamide relative to administration of oral niclosamide. Conclusions: Single local pulmonary administration of niclosamide via nebulization was well tolerated in sheep and resulted in substantially higher peak ELF concentration compared to the human equivalent oral 2 g dose. © 2023, The Author(s).
Small-signal stability and resonance perspectives in microgrid : a review
- Krismanto, Awan, Mithulananthan, Nadarajah, Shah, Rakibuzzaman, Setiadi, Herlambang, Islam, Md Rabiul
- Authors: Krismanto, Awan , Mithulananthan, Nadarajah , Shah, Rakibuzzaman , Setiadi, Herlambang , Islam, Md Rabiul
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Energies Vol. 16, no. 3 (2023), p.
- Full Text:
- Reviewed:
- Description: The microgrid (MG) system is a controlled and supervised power system consisting of renewable energy (RE)-based distributed generation (DG) units, loads, and energy storage. The MG can be operated autonomously or while connected to the grid. Higher intermittencies and uncertainties can be observed in MGs compared to the conventional power system, which is the possible source of small-signal stability in MG systems. It can be seen as disturbances around the stable operating point, which potentially lead to the small-signal instability problem within MGs. Small-signal instability issues also emerge due to the lack of damping torque in the MG. The integration of power electronic devices and complex control algorithms within MGs introduces novel challenges in terms of small-signal stability and possible resonances. The occurrence of interaction in a low- or no-inertia system might worsen the stability margin, leading to undamped oscillatory instability. The interaction within the MG is characterized by various frequency ranges, from low-frequency subsynchronous oscillation to high-frequency ranges around the harmonic frequencies. This study presents an overview of the dynamic model, possible sources of small-signal instability problems, and resonance phenomena in MGs. The developed models of MG, including structure, converter-based power generation, and load and control algorithms, are briefly summarized to provide the context of MG system dynamics. A comprehensive critical review of the previous research, including small-signal stability and resonance phenomenon for MGs, is also provided. Finally, key future research areas are recommended. © 2023 by the authors.
- Authors: Krismanto, Awan , Mithulananthan, Nadarajah , Shah, Rakibuzzaman , Setiadi, Herlambang , Islam, Md Rabiul
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Energies Vol. 16, no. 3 (2023), p.
- Full Text:
- Reviewed:
- Description: The microgrid (MG) system is a controlled and supervised power system consisting of renewable energy (RE)-based distributed generation (DG) units, loads, and energy storage. The MG can be operated autonomously or while connected to the grid. Higher intermittencies and uncertainties can be observed in MGs compared to the conventional power system, which is the possible source of small-signal stability in MG systems. It can be seen as disturbances around the stable operating point, which potentially lead to the small-signal instability problem within MGs. Small-signal instability issues also emerge due to the lack of damping torque in the MG. The integration of power electronic devices and complex control algorithms within MGs introduces novel challenges in terms of small-signal stability and possible resonances. The occurrence of interaction in a low- or no-inertia system might worsen the stability margin, leading to undamped oscillatory instability. The interaction within the MG is characterized by various frequency ranges, from low-frequency subsynchronous oscillation to high-frequency ranges around the harmonic frequencies. This study presents an overview of the dynamic model, possible sources of small-signal instability problems, and resonance phenomena in MGs. The developed models of MG, including structure, converter-based power generation, and load and control algorithms, are briefly summarized to provide the context of MG system dynamics. A comprehensive critical review of the previous research, including small-signal stability and resonance phenomenon for MGs, is also provided. Finally, key future research areas are recommended. © 2023 by the authors.
Social media use and abuse : different profiles of users and their associations with addictive behaviours
- Tullett-Prado, Deon, Stavropoulos, Vasileios, Gomez, Rapson, Doley, Jo
- Authors: Tullett-Prado, Deon , Stavropoulos, Vasileios , Gomez, Rapson , Doley, Jo
- Date: 2023
- Type: Text , Journal article
- Relation: Addictive Behaviors Reports Vol. 17, no. (2023), p.
- Full Text:
- Reviewed:
- Description: Introduction: Social media use has become increasingly prevalent worldwide. Simultaneously, concerns surrounding social media abuse/problematic use, which resembles behavioural and substance addictions, have proliferated. This has prompted the introduction of ‘Social Media Addiction’ [SMA], as a condition requiring clarifications regarding its definition, assessment and associations with other addictions. Thus, this study aimed to: (a) advance knowledge on the typology/structure of SMA symptoms experienced and: (b) explore the association of these typologies with addictive behaviours related to gaming, gambling, alcohol, smoking, drug abuse, sex (including porn), shopping, internet use, and exercise. Methods: A sample of 968 [Mage = 29.5, SDage = 9.36, nmales = 622 (64.3 %), nfemales = 315, (32.5 %)] adults was surveyed regarding their SMA experiences, using the Bergen Social Media Addiction Scale (BSMAS). Their experiences of Gaming, Internet, Gambling, Alcohol, Cigarette, Drug, Sex, Shopping and Exercise addictions were additionally assessed, and latent profile analysis (LPA) was implemented. Results: Three distinct profiles were revealed, based on the severity of one's SMA symptoms: ‘low’, ‘moderate’ and ‘high’ risk. Subsequent ANOVA analyses suggested that participants classified as ‘high’ risk indicated significantly higher behaviours related to internet, gambling, gaming, sex and in particular shopping addictions. Conclusions: Results support SMA as a unitary construct, while they potentially challenge the distinction between technological and behavioural addictions. Findings also imply that the assessment of those presenting with SMA behaviours, as well as prevention and intervention targeting SMA at risk groups, should consider other comorbid addictions. © 2023 The Author(s)
- Authors: Tullett-Prado, Deon , Stavropoulos, Vasileios , Gomez, Rapson , Doley, Jo
- Date: 2023
- Type: Text , Journal article
- Relation: Addictive Behaviors Reports Vol. 17, no. (2023), p.
- Full Text:
- Reviewed:
- Description: Introduction: Social media use has become increasingly prevalent worldwide. Simultaneously, concerns surrounding social media abuse/problematic use, which resembles behavioural and substance addictions, have proliferated. This has prompted the introduction of ‘Social Media Addiction’ [SMA], as a condition requiring clarifications regarding its definition, assessment and associations with other addictions. Thus, this study aimed to: (a) advance knowledge on the typology/structure of SMA symptoms experienced and: (b) explore the association of these typologies with addictive behaviours related to gaming, gambling, alcohol, smoking, drug abuse, sex (including porn), shopping, internet use, and exercise. Methods: A sample of 968 [Mage = 29.5, SDage = 9.36, nmales = 622 (64.3 %), nfemales = 315, (32.5 %)] adults was surveyed regarding their SMA experiences, using the Bergen Social Media Addiction Scale (BSMAS). Their experiences of Gaming, Internet, Gambling, Alcohol, Cigarette, Drug, Sex, Shopping and Exercise addictions were additionally assessed, and latent profile analysis (LPA) was implemented. Results: Three distinct profiles were revealed, based on the severity of one's SMA symptoms: ‘low’, ‘moderate’ and ‘high’ risk. Subsequent ANOVA analyses suggested that participants classified as ‘high’ risk indicated significantly higher behaviours related to internet, gambling, gaming, sex and in particular shopping addictions. Conclusions: Results support SMA as a unitary construct, while they potentially challenge the distinction between technological and behavioural addictions. Findings also imply that the assessment of those presenting with SMA behaviours, as well as prevention and intervention targeting SMA at risk groups, should consider other comorbid addictions. © 2023 The Author(s)
Soil–water dynamics investigation at agricultural hillslope with high-precision weighing lysimeters and soil–water collection systems
- Krevh, Vedran, Groh, Jannis, Filipović, Lana, Gerke, Horst, Defterdarović, Jasmina, Thompson, Sally, Sraka, Mario, Bogunović, Igor, Kovač, Zoran, Robinson, Nathan, Baumgartl, Thomas, Filipović, Vilim
- Authors: Krevh, Vedran , Groh, Jannis , Filipović, Lana , Gerke, Horst , Defterdarović, Jasmina , Thompson, Sally , Sraka, Mario , Bogunović, Igor , Kovač, Zoran , Robinson, Nathan , Baumgartl, Thomas , Filipović, Vilim
- Date: 2023
- Type: Text , Journal article
- Relation: Water (Switzerland) Vol. 15, no. 13 (2023), p.
- Full Text:
- Reviewed:
- Description: A quantitative understanding of actual evapotranspiration (ETa) and soil–water dynamics in a hillslope agroecosystem is vital for sustainable water resource management and soil conservation; however, the complexity of processes and conditions involving lateral subsurface flow (LSF) can be a limiting factor in the full comprehension of hillslope soil–water dynamics. The research was carried out at SUPREHILL CZO located on a hillslope agroecosystem (vineyard) over a period of two years (2021–2022) by combining soil characterization and field hydrological measurements, including weighing lysimeters, sensor measurements, and LSF collection system measurements. Lysimeters were placed on the hilltop and the footslope, both having a dynamic controlled bottom boundary, which corresponded to field pressure head measurements, to mimic field soil–water dynamics. Water balance components between the two positions on the slope were compared with the goal of identifying differences that might reveal hydrologically driven differences due to LSF paths across the hillslope. The usually considered limitations of these lysimeters, or the borders preventing LSF through the domain, acted as an aid within this installation setup, as the lack of LSF was compensated for through the pumping system at the footslope. The findings from lysimeters were compared with LSF collection system measurements. Weighing lysimeter data indicated that LSF controlled ETa rates. The results suggest that the onset of LSF contributes to the spatial crop productivity distribution in hillslopes. The present approach may be useful for investigating the impact of LSF on water balance components for similar hillslope sites and crops or other soil surface covers. © 2023 by the authors.
- Authors: Krevh, Vedran , Groh, Jannis , Filipović, Lana , Gerke, Horst , Defterdarović, Jasmina , Thompson, Sally , Sraka, Mario , Bogunović, Igor , Kovač, Zoran , Robinson, Nathan , Baumgartl, Thomas , Filipović, Vilim
- Date: 2023
- Type: Text , Journal article
- Relation: Water (Switzerland) Vol. 15, no. 13 (2023), p.
- Full Text:
- Reviewed:
- Description: A quantitative understanding of actual evapotranspiration (ETa) and soil–water dynamics in a hillslope agroecosystem is vital for sustainable water resource management and soil conservation; however, the complexity of processes and conditions involving lateral subsurface flow (LSF) can be a limiting factor in the full comprehension of hillslope soil–water dynamics. The research was carried out at SUPREHILL CZO located on a hillslope agroecosystem (vineyard) over a period of two years (2021–2022) by combining soil characterization and field hydrological measurements, including weighing lysimeters, sensor measurements, and LSF collection system measurements. Lysimeters were placed on the hilltop and the footslope, both having a dynamic controlled bottom boundary, which corresponded to field pressure head measurements, to mimic field soil–water dynamics. Water balance components between the two positions on the slope were compared with the goal of identifying differences that might reveal hydrologically driven differences due to LSF paths across the hillslope. The usually considered limitations of these lysimeters, or the borders preventing LSF through the domain, acted as an aid within this installation setup, as the lack of LSF was compensated for through the pumping system at the footslope. The findings from lysimeters were compared with LSF collection system measurements. Weighing lysimeter data indicated that LSF controlled ETa rates. The results suggest that the onset of LSF contributes to the spatial crop productivity distribution in hillslopes. The present approach may be useful for investigating the impact of LSF on water balance components for similar hillslope sites and crops or other soil surface covers. © 2023 by the authors.
Sport4Me : a people focused approach to engaging Australians in sport
- Eime, Rochelle, Westerbeek, Hans, Pill, Shane, Reece, Lindsey
- Authors: Eime, Rochelle , Westerbeek, Hans , Pill, Shane , Reece, Lindsey
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Frontiers in Sports and Active Living Vol. 4, no. (2023), p.
- Full Text:
- Reviewed:
- Description: The traditional model of community club-based sport is fine for those, particularly children and youth, who enjoy the competitive focus and have the skills and commitment to play. But societal preferences during leisure time have changed dramatically over recent decades. However, sport organisations have made limited progress in response to these changes in providing ways in which children and youth can participate outside the traditional competitive structures and environments. In this paper the context of community club-based structures is reviewed leading into an assessment of the associated impact of these structures on sport participation. Children and youth's current motivations to play sport including what makes sport fun to play, are considered. It is then demonstrated that the associations between motivations to play sport and the factors that contribute to fun and enjoyment, are often misaligned for many individuals, with a primary focus on competition-based structures to deliver community club sport. In the final part of the paper a model for community sport organisations where people are put first is proposed - Sport4Me. Sport4Me is about flexible, inclusive, equitable sporting opportunities that focus on friends, fun, physical literacy and play. The model would complement the traditional competitive club-based model and afford participants more choice whilst fostering an environment that promotes lifelong involvement in sport. This model will require structural and cultural changes to the sporting environment and include coaching practices. Sport4Me is an evidence-based model, but it is not radical in its conceptualisation but rather, builds on previously proposed approaches, considers the needs and wants of potential sport participants and widens the scope of sport delivery. 2023 Eime, Westerbeek, Pill and Reece.
- Authors: Eime, Rochelle , Westerbeek, Hans , Pill, Shane , Reece, Lindsey
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Frontiers in Sports and Active Living Vol. 4, no. (2023), p.
- Full Text:
- Reviewed:
- Description: The traditional model of community club-based sport is fine for those, particularly children and youth, who enjoy the competitive focus and have the skills and commitment to play. But societal preferences during leisure time have changed dramatically over recent decades. However, sport organisations have made limited progress in response to these changes in providing ways in which children and youth can participate outside the traditional competitive structures and environments. In this paper the context of community club-based structures is reviewed leading into an assessment of the associated impact of these structures on sport participation. Children and youth's current motivations to play sport including what makes sport fun to play, are considered. It is then demonstrated that the associations between motivations to play sport and the factors that contribute to fun and enjoyment, are often misaligned for many individuals, with a primary focus on competition-based structures to deliver community club sport. In the final part of the paper a model for community sport organisations where people are put first is proposed - Sport4Me. Sport4Me is about flexible, inclusive, equitable sporting opportunities that focus on friends, fun, physical literacy and play. The model would complement the traditional competitive club-based model and afford participants more choice whilst fostering an environment that promotes lifelong involvement in sport. This model will require structural and cultural changes to the sporting environment and include coaching practices. Sport4Me is an evidence-based model, but it is not radical in its conceptualisation but rather, builds on previously proposed approaches, considers the needs and wants of potential sport participants and widens the scope of sport delivery. 2023 Eime, Westerbeek, Pill and Reece.
Stability prediction of underground entry-type excavations based on particle swarm optimization and gradient boosting decision tree
- Zhou, Jian, Huang, Shuai, Tao, Ming, Khandelwal, Manoj, Dai, Yong, Zhao, Mingsheng
- Authors: Zhou, Jian , Huang, Shuai , Tao, Ming , Khandelwal, Manoj , Dai, Yong , Zhao, Mingsheng
- Date: 2023
- Type: Text , Journal article
- Relation: Underground Space (China) Vol. 9, no. (2023), p. 234-249
- Full Text:
- Reviewed:
- Description: The stability of underground entry-type excavations will directly affect the working environment and the safety of staff. Empirical critical span graphs and traditional statistics learning methods can not meet the requirements of high accuracy for stability assessment of entry-type excavations. Therefore, this study proposes a new prediction method based on machine learning to scientifically adjust the critical span graph. Accordingly, the particle swarm optimization (PSO) algorithm is used to optimize the core parameters of the gradient boosting decision tree (GBDT), abbreviated as PSO-GBDT. Moreover, the classification performance of eight other classifiers including GDBT, k-nearest neighbors (KNN), two kinds of support vector machines (SVM), Gaussian naive Bayes (GNB), logistic regression (LR) and linear discriminant analysis (LDA) are also applied to compare with the proposed model. Findings revealed that compared with the other eight models, the prediction performance of PSO-GBDT is undoubtedly the most reliable, and its classification accuracy is up to 0.93. Therefore, this model has great potential to provide a more scientific and accurate choice for the stability prediction of underground excavations. In addition, each classification model is used to predict the stability category of several grid points divided by the critical span graph, and the updated critical span graph of each model is discussed in combination with previous studies. The results show that the PSO-GBDT model has the advantages of being scientific, accurate and efficient in updating the critical span graph, and its output decision boundary has strict theoretical support, which can help mine operators make favorable economic decisions. © 2022
- Authors: Zhou, Jian , Huang, Shuai , Tao, Ming , Khandelwal, Manoj , Dai, Yong , Zhao, Mingsheng
- Date: 2023
- Type: Text , Journal article
- Relation: Underground Space (China) Vol. 9, no. (2023), p. 234-249
- Full Text:
- Reviewed:
- Description: The stability of underground entry-type excavations will directly affect the working environment and the safety of staff. Empirical critical span graphs and traditional statistics learning methods can not meet the requirements of high accuracy for stability assessment of entry-type excavations. Therefore, this study proposes a new prediction method based on machine learning to scientifically adjust the critical span graph. Accordingly, the particle swarm optimization (PSO) algorithm is used to optimize the core parameters of the gradient boosting decision tree (GBDT), abbreviated as PSO-GBDT. Moreover, the classification performance of eight other classifiers including GDBT, k-nearest neighbors (KNN), two kinds of support vector machines (SVM), Gaussian naive Bayes (GNB), logistic regression (LR) and linear discriminant analysis (LDA) are also applied to compare with the proposed model. Findings revealed that compared with the other eight models, the prediction performance of PSO-GBDT is undoubtedly the most reliable, and its classification accuracy is up to 0.93. Therefore, this model has great potential to provide a more scientific and accurate choice for the stability prediction of underground excavations. In addition, each classification model is used to predict the stability category of several grid points divided by the critical span graph, and the updated critical span graph of each model is discussed in combination with previous studies. The results show that the PSO-GBDT model has the advantages of being scientific, accurate and efficient in updating the critical span graph, and its output decision boundary has strict theoretical support, which can help mine operators make favorable economic decisions. © 2022
Stadium financing, usage and the impact of institutional change on consumer demand : the case of VFL Park, 1970–1986
- Mishra, Vinod, Borrowman, Luc, Frost, Lionel, Halabi, Abdel
- Authors: Mishra, Vinod , Borrowman, Luc , Frost, Lionel , Halabi, Abdel
- Date: 2023
- Type: Text , Journal article
- Relation: Asia-Pacific Economic History Review Vol. 63, no. 1 (2023), p. 94-116
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- Reviewed:
- Description: Ownership, financing, and usage of stadiums are key issues that affect the commercial operations of sports leagues. Stadiums that are owned by leagues may generate deadweight losses if they are not used to full capacity. We (1) model demand to measure the impact of the Victorian Football League building a privately-funded stadium (VFL Park); (2) then use counterfactual scenarios to estimate social saving from different venues and playing days, and determine whether further welfare gains would have been possible. VFL Park provided greater control over revenue, but further institutional change was needed to fully exploit potential commercial gains from the stadium. © 2023 The Authors. Asia-Pacific Economic History Review published by Economic History Society of Australia and New Zealand and John Wiley & Sons Australia, Ltd.
- Authors: Mishra, Vinod , Borrowman, Luc , Frost, Lionel , Halabi, Abdel
- Date: 2023
- Type: Text , Journal article
- Relation: Asia-Pacific Economic History Review Vol. 63, no. 1 (2023), p. 94-116
- Full Text:
- Reviewed:
- Description: Ownership, financing, and usage of stadiums are key issues that affect the commercial operations of sports leagues. Stadiums that are owned by leagues may generate deadweight losses if they are not used to full capacity. We (1) model demand to measure the impact of the Victorian Football League building a privately-funded stadium (VFL Park); (2) then use counterfactual scenarios to estimate social saving from different venues and playing days, and determine whether further welfare gains would have been possible. VFL Park provided greater control over revenue, but further institutional change was needed to fully exploit potential commercial gains from the stadium. © 2023 The Authors. Asia-Pacific Economic History Review published by Economic History Society of Australia and New Zealand and John Wiley & Sons Australia, Ltd.