137 research outputs found
sj-docx-1-tva-10.1177_15248380231162979 – Supplemental material for Child Maltreatment as a Risk Factor for Rejection Sensitivity: A Three-Level Meta-Analytic Review
No full textSupplemental material, sj-docx-1-tva-10.1177_15248380231162979 for Child Maltreatment as a Risk Factor for Rejection Sensitivity: A Three-Level Meta-Analytic Review by Shuling Gao, Mark Assink, Chongzeng Bi and Ko Ling Chan in Trauma, Violence, & Abuse</p
Supplemental Material, 5._Appendices - Associations Between Rejection Sensitivity, Aggression, and Victimization: A Meta-Analytic Review
No full textSupplemental Material, 5._Appendices for Associations Between Rejection Sensitivity, Aggression, and Victimization: A Meta-Analytic Review by Shuling Gao, Mark Assink, Tinting Liu, Ko Ling Chan, and Patrick Ip in Trauma, Violence, & Abuse</p
sj-docx-1-tva-10.1177_15248380221147559 – Supplemental material for The Association Between Child Maltreatment and Pathological Narcissism: A Three-Level Meta-Analytic Review
No full textSupplemental material, sj-docx-1-tva-10.1177_15248380221147559 for The Association Between Child Maltreatment and Pathological Narcissism: A Three-Level Meta-Analytic Review by Shuling Gao, Delin Yu, Mark Assink, Ko Ling Chan, Ling Zhang and Xianxin Meng in Trauma, Violence, & Abuse</p
sj-docx-1-tva-10.1177_15248380241226631 – Supplemental material for Intimate Partner Violence Against Women Before, During, and After Pregnancy: A Meta-Analysis
No full textSupplemental material, sj-docx-1-tva-10.1177_15248380241226631 for Intimate Partner Violence Against Women Before, During, and After Pregnancy: A Meta-Analysis by Xiao-Yan Chen, Camilla Kin Ming Lo, Qiqi Chen, Shuling Gao, Frederick K. Ho, Douglas Austin Brownridge, Wing Cheong Leung, Patrick Ip and Ko Ling Chan in Trauma, Violence, & Abuse</p
The bidirectional association between peer relationships and internet addiction: A meta-analytic structural equation model based on longitudinal studies
No full textDecades of research implicates peer relationships in internet addiction. Yet, inconsistent findings, underpowered studies, and the tendency for researchers to assume one direction of influence have clouded understanding of whether peer relationships is a vulnerability factor for internet addiction, a consequence of internet addiction, or both. Our primary aim was to address this by using meta-analytic structural equation modeling to test cross-lagged reciprocal relations between peer relationships and internet addiction. Our secondary aim was to examine possible moderators that might explain heterogeneity across studies by conducting a multivariate random-effects meta-analysis. A total of 37 articles were identified for inclusion, including 45,212 subjects. The results show that peer relationships significantly negatively predict internet addiction over time and vice versa. Moderating analyses showed that cultural background had moderating effects on the prediction of peer relationships on internet addiction. Time lag and cultural background had moderating effects on the prediction of internet addiction on peer relationships. The results reveal a complex bidirectional dynamic relationship between peer relationships and internet addiction, providing empirical basis and practical guidance for formulating targeted prevention and intervention strategies
RETRACTED ARTICLE: Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Shiqing Song, Faliang Lin, Pengyan Zhu, Changyan Wu, Shuling Zhao, Qiao Han & Xiaomei Li (2019) Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24. Artificial Cells, Nanomedicine, and Biotechnology, 47(1), 3994–4000, DOI: 10.1080/21691401.2019.1673767Since publication, concerns have been raised about the integrity of the data in the article. When approached for an explanation, the authors have been unable to verify their original data. We also have concerns regarding the integrity of the authorship, as one author has stated they did not consent to being listed as an author. We are therefore retracting this article and the corresponding author listed in this publication have been informed.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’
Effect of Temperatures and Moisture Content on the Fracture Properties of Engineered Cementitious Composites (ECC)
No full textThis research will help to improve our understanding of the fracture properties of ECC at low temperatures (long-term low temperatures, freeze–thaw) and evaluate the safety properties of ECC under low-temperature conditions. Three levels of saturation (saturated, semi-saturated, and dry), four target temperatures (20, 0, −20, and −60 °C), and the effect of the coupled of the two on the mode I fracture properties of ECC were investigated. Then, we compared and analyzed the fracture properties of ECC loaded at 20 and −20 °C, after different freeze–thaw cycles (25, 50, 100 cycles), which were compared with saturated specimens without freeze–thaw at the four target temperatures to analyze the differences in low-temperature and freeze–thaw failure mechanisms. Temperatures and saturation have a significant effect on the fracture properties. Low temperatures and freeze–thaw treatments both decreased the nominal fracture energy of ECC. Distinct differences in matrix and fiber-matrix interface damage mechanisms have been discovered. Low temperatures treatment transforms ECC from a ductile to a brittle fracture mode. However, even after 100 freeze–thaw cycles, it remains ductile fractured. This study complements the deficiencies of ECC in low-temperature theoretical and experimental applications, and it sets the stage for a broad range of ECC applications
Experimental Study on Biaxial Dynamic Compressive Properties of ECC
No full textAn improved hydraulic servo structure testing machine has been used to conduct biaxial dynamic compression tests on eight types of engineered cementitious composites (ECC) with lateral pressure levels of 0, 0.125, 0.25, 0.5, 0.7, 0.8, 0.9, 1.0 (the ratio of the compressive strength applied laterally to the static compressive strength of the specimen), and three strain rates of 10−4, 10−3 and 10−2 s−1. The failure mode, peak stress, peak strain, deformation modulus, stress-strain curve, and compressive toughness index of ECC under biaxial dynamic compressive stress state are obtained. The test results show that the lateral pressure affects the direction of ECC cracking, while the strain rate has little effect on the failure morphology of ECC. The growth of lateral pressure level and strain rate upgrades the limit failure strength and peak strain of ECC, and the small improvement is achieved in elastic modulus. A two-stage ECC biaxial failure strength standard was established, and the influence of the lateral pressure level and peak strain was quantitatively evaluated through the fitting curve of the peak stress, peak strain, and deformation modulus of ECC under various strain rates and lateral pressure levels. ECC’s compressive stress-strain curve can be divided into four stages, and a normalized biaxial dynamic ECC constitutive relationship is established. The toughness index of ECC can be increased with the increase of lateral pressure level, while the increase of strain rate can reduce the toughness index of ECC. Under the effect of biaxial dynamic load, the ultimate strength of ECC is increased higher than that of plain concrete
Effects of Freeze–Thaw Cycles on Axial Compression Behaviors of UHPC-RC Composite Columns
No full textUltra-high performance concrete (UHPC) with excellent durability has broad application prospects in improving the durability of reinforced concrete (RC) structures. To clarify the influence of freeze–thaw cycles on the axial compression performance of UHPC-RC composite columns, axial compression tests were carried out on composite columns with different cycles (0, 100, 200, 300 cycles) and stirrup spacing (35, 70, 105 mm). The results showed that the UHPC shell did not fall off when the composite column was destroyed, even in the freeze–thaw environment. Under the action of freeze–thaw cycles, the peak load Nu,t and initial elastic modulus E of the composite column decreased, but the ductility coefficient μ increased. Increasing the stirrup spacing could significantly improve the ductility of the composite column. After 100 freeze–thaw cycles, the ductility coefficient μ of the 35 mm stirrup spacing specimen was 112.6% higher than that of the 105 mm specimen. A prediction model for the bearing capacity of UHPC-RC composite columns under freeze–thaw cycles was established, and the predicted results were in good agreement with the experimental results. This study lays a theoretical and experimental foundation for the application and design of UHPC-RC composite columns in the freeze–thaw environment
Relations among future orientation, school bonding, and school bullying in adolescents in rural China
No full textBullying is a specific form of aggression that is characterized by power imbalance whereby a more powerful individual or group intentionally and repeatedly causes harm to a weaker individual or group. Aiming at imbalanced power relationship, this study proposes a capital-building framework that focuses on empowering the weak party in order to reduce bullying. Future education orientation and school bonding may help build individual’s human and social capital. This study thus aims to examine relations among future education orientation, school bonding, and school bullying perpetration and bullying victimization among adolescents in rural China.
A cross-sectional study using convenient sampling was conducted. Data was collected from 1,450 seventh to ninth grade adolescents in one middle school in Chongqing and four middle schools in Shenzhen. Students completed the exploration and commitment questionnaire, the psychological sense of school membership (PSSM) scale, and Olweus’s bullying/ victimization-revised (OBVR) scale to assess their future education orientation, school bonding and school bullying perpetration and bullying victimization, respectively. Structural equation modeling was used to test the mediation/suppression effect of school bonding in the relationship of future education orientation and school bullying perpetration and bullying victimization.
This study found a prevalence of adolescents involved in bullying perpetration and bullying victimization; 49.2% adolescents (27.7% males and 21.5% females) reported bullying others and 73.2% adolescents (36.4% males and 36.8% females) admitted to being bullied at least once during their time in junior high school. This study also found that gender and type of children displayed significantly different effects on future education orientation, school bonding, and school bullying perpetration and bullying victimization. Grade only had a significant effect on future education orientation, but not on school bonding and school bullying perpetration and bullying victimization. The results of structural equation modeling indicated that students’ future education orientation was negatively associated with school bullying perpetration. Future education orientation was positively and significantly associated with adolescents’ feeling of school bonding. School bonding had a significant indirect effect (b = .36) on the relation between future education orientation and school bullying perpetration. Gender did not yield a significant moderating effect in the full mediation model among future education orientation, school bonding, and school bullying perpetration. However, school bonding had a suppression effect –rather than mediation effect –on the relationship between future education orientation and school bullying victimization.
This research suggests that school bonding may be one mechanism through which children’s orientation toward future education may have a buffering effect on their bullying perpetration. Future education orientation and school bonding act as protective factors for children at risk of bullying perpetration. School bonding serves as a protective factor for bullying victimization; however, future education orientation does not serve as a protective factor for bullying victimization. Implications for school bullying interventions focusing on future education orientation and school bonding should be tailored for bullying perpetrators and bullying victims.published_or_final_versionSocial Work and Social AdministrationDoctoralDoctor of Philosoph
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