Poor Resilience Research Articles

Social listening on immunization: complementing the online perspective with that of family doctors, nurses and teachers

The infodemic has boosted the use of social listening techniques in public health and highlighted the need to complement the online and offline perspectives. Thus, through qualitative studies carried out offline, we aimed to identify potential aspects of misinformation that would serve as barriers to population vaccination. Between September 2023 and April 2024, five focus groups were held, with a total of 37 participants. The text derived from the transcripts of the records was analyzed, and based on the synthesis of this qualitative data, findings were formulated, supported by quotes. Ten themes confirming vaccine hesitancy have been identified: mistrust (in doctors, authorities, vaccines, system, manufacturers), fears and reluctance to vaccination, communication, rumors and poor resilience to misinformation, intra- and inter-sectoral collaboration, legislation and mandatory vaccination, role of communities, falsification of vaccination cards, limited time of doctors and measles. The abundance of information, including false information, disseminated through the media, social networks and parents` groups is a barrier to vaccination. Some parents refuse vaccination without being able to give a reason and without being aware of possible consequences. A serious problem confirmed by doctors and teachers is the illegal completion of vaccination records. Teachers show poor resilience to misinformation. Both family doctors and teachers mention the importance of intensifying intersectoral collaboration.

Death Preparation and Quality of Life amongst Family Caregivers of Terminal Cancer Patients: A Multicentre Cross-sectional Study

Objectives: Caring for ill cancer patients imposes a considerable burden on families, significantly reducing quality of life (QoL). This study examined the association between death preparation and QoL amongst family caregivers (FCs) of terminally ill patients with cancer in South Korea. Materials and Methods: A multicentre cross-sectional survey using questionnaires was conducted in nine inpatient palliative care units in South Korea. Data from 170 FCs who answered questions about preparedness for death were analysed. A stepwise multivariate logistic model was used to identify the factors associated with FCs’ QoL. The estimated QoL scores were also compared between the groups according to preparedness level. Results: Factors associated with high QoL included old age, fewer daily caregiving hours, fewer caregiving durations and practical preparedness for death. The well-prepared group had significantly higher QoL scores in the burdensome domain. This significant association remained robust in FCs with low educational or social support levels, poor resilience and dysfunctional families. Conclusion: Practically, well-prepared FCs experienced a high QoL in hospice care settings. FCs are likely to benefit from assessment and encouragement of their preparedness for death.

Assessing the health of wetland using the PSR approach with reference to the Renuka Ramsar Site, India.

Wetlands are important ecosystems, and few of them, owing to unique characteristics, have been designated the status of Ramsar sites under the convention of wetlands. Despite the status, few of these wetlands are under threat owing to their social importance. Renuka wetland is one such important Ramsar site in India, which is culturally an embodiment of the Goddess Renuka ji. An international fair is held every year at the lake which attracts thousands of pilgrims and tourists. This event is one of the major contributors to anthropogenic risk; other pressures are siltation, pollution, land use activities, and invasive species. Under such a scenario, it becomes important to assess the health of wetlands to take timely decisions about their management. This study evaluates the health of Renuka wetland, using the Pressure State and Response (PSR) model. Relevant data related to the wetland and its catchment from a wide spectrum of sources, namely, field, laboratory, and remote sensing were combined to assess the health of the wetland. Ten indicators were identified, and Analytic Hierarchy Process (AHP) was used to assign weights to the indicators. The wetland health index of Renuka wetland is 0.35, indicating that the lake is in poor condition exhibiting degraded functioning, high external pressure, low vigor, poor resilience, and stability. The study also revealed that the water quality deteriorates post-fair. Thus, the wetland needs attention in terms of management so that the health of the lake improves and is sustained in the future. The study contributes to Sustainable Development Goal 6.6 which focuses on protecting and restoring water-related ecosystems and aims at healthier ecosystems.

Resilience in children of parents with mental illness, alcohol or substance misuse-An integrative review.

The aim of this integrative review was to investigate how resilience has been researched and explore experiences of resilience, in children of parents with mental illness or alcohol or substance misuse. An integrative review. The search included three major electronic databases, PubMed, Scopus and PsycINFO with the aim of identifying peer-reviewed studies where the concept of resilience was explored as resilience, coping, adaptation or protective factors. Out of 4016 studies, 14 were included after meeting predetermined criteria and methodological quality evaluation. The findings are presented in five categories: characteristics of the studies, operationalization and interpretation of resilience, individual resources, family resources and resources outside the family. Resilience in children of parents with mental illness or substance misuse refers to coping strategies, protective factors and absence of symptoms or risk behaviour despite being exposed to risk. We suggest a three-level approach for mapping of resilience resources in the target group: the individual level, family level and outside of the family that includes both non-professionals and professionals. The use of disengagement or avoidance strategies implies poor resilience but may be necessary in absence of support, as acts of self-preservation during chaotic periods or harmful situations.

Factors That Influence Resilience among First-Year Undergraduate Nursing Students: A Cross-Sectional Descriptive Study.

During their transition from basic to higher education, first-year undergraduate nursing students need to balance theoretical and clinical requirements, as well as their social life. A significant number of them struggle with this, due to a lack of coping mechanisms due to poor resilience. This study aimed to determine factors that influence resilience among first-year undergraduate nursing students at a South African university. A cross-sectional descriptive research design was followed, with stratified convenient sampling. Data were collected during August 2023 using an adapted self-administered online questionnaire. The reliability and validity of the adapted version was ensured in the context of this study. Principal component analysis and varimax rotation were used to analyse data. A total of 123 participants (47.2% from campus A and 52.8% from campus B) completed the questionnaire. The majority (88%) were females. This study showed that resilience can be dependent on various factors, such as lecturer support, parental support, academic achievement, peer and mentor support, optimism about the future, and self-determination. It is recommended that higher education institutions should consider incorporating the factors presented in this study as part of the broader orientation of first-year undergraduate nursing students when they first arrive at university.

Provincial-scale assessment of vulnerability and resilience to drought in China

Frequent droughts have caused severe disaster losses in China. Such events can be minimized by enhancing the country's resilience and reducing its vulnerability, where this can ensure socioeconomic stability and sustainable development. Evaluating the vulnerability and resilience to drought is thus crucial for effectively managing the risk of disasters and promoting sustainable socioeconomic development. In this study, we constructed a comprehensive framework to assess the spatiotemporal characteristics of China's vulnerability and resilience to drought at the provincial scale from an input-output perspective by using the Super-efficiency Data Envelopment Analysis (DEA) model and the Super-efficiency Slacks-Based Measure DEA (SBM-DEA) model. This study focused on drought drivers, the disaster-forming environment, drought bearers, disaster intensity, and recovery. The results showed that the vulnerability to drought of 42 % of China's provinces decreased from 2010 to 2022, that of only 29 % of the provinces increased, while the status of a majority of provinces improved in general. The center of gravity of the vulnerability to drought moved toward the southwest over time and a spatial clustering of vulnerability was observed, with High-High clusters moving from the north to the south. Moreover, the resilience to drought declined in 36 % of provinces and increased in only 20 %, reflecting poor resilience overall. The center of gravity of China's overall resilience to drought moved northward, with a relatively stable spatial pattern and prominent clusters of Low-Low resilience indicating a pressing need for improvement. Areas with high vulnerability and low resilience were concentrated in inland western and eastern regions, and this highlights the importance of drought prevention and mitigation in provinces like Xinjiang, Inner Mongolia, Jiangxi, and Fujian. The findings here provide valuable insights for mitigating the risk of drought and promoting sustainable socioeconomic development.

Investigating urban resilience in case of climate change: A case study of region 12 of Tehran

Given the critical importance of urban resilience in the face of climate change, this paper aims to assess the urban resilience of District 12 in Tehran. District 12 was chosen for its high pollution levels, and the research methodology employed is analytical-descriptive. Data collection relies on library sources and documents, and for analysis, descriptive-inferential statistics including one-sample T-Test and Likert scale are utilized. The statistical population comprises urban planning and meteorological experts. To gauge resilience levels, five variables were identified, each encompassing six components tailored to the region's conditions. The primary objective is to pinpoint components exhibiting poor resilience in response to climate change. Findings indicate a stronger economic dimension of resilience contrasted with a weaker physical dimension, thus suggesting that Region 12 lacks resilience to climate change. The paper offers a comprehensive overview of disasters and provides recommendations for enhancing urban resilience. Studies on climate resilience can prove valuable for urban planners in revising and updating existing plans in the future.

Characteristics and influencing factors of demoralization in patients with lung cancer: A latent class analysis.

Demoralization has garnered increasing attention in recent years as a significant psychological distress. This study aims to identify latent classes of demoralization in lung cancer patients using Latent Class Analysis (LCA) from a person-centered perspective and to explore the factors influencing the latent classes of demoralization. A cross-sectional study using convenience sampling was conducted among 567 lung cancer patients in three tertiary hospitals in China. LCA was employed to classify heterogeneous classes of demoralization. Multinomial logistic regression analyses were performed to explore the associations between demographic and clinical characteristics, as well as physical symptoms, resilience, family function, and coping strategies, with class membership in the identified heterogeneous subgroups of lung cancer patients. Three latent classes of demoralization were identified: the high demoralization group (Class 1, 14.8%), the moderate demoralization-distress and helplessness group (Class 2, 37.2%), and the low demoralization group (Class 3, 48.0%). In comparison to Class 3, lung cancer patients with hypertension, higher core symptom burden, poorer resilience, dysfunctional family dynamics, and resignation coping were more likely to belong to Class 1 and Class 2. The demoralization patterns in lung cancer patients were varied. Targeted intervention should be developed based on the characteristics of each class, and timely attention shouldbe paid to high-risk patients.

Embracing Well-being: Strategies to Cultivate and Prioritize Wellness and Resilience in Undergraduate Medical Students

Abstract From the perspective of medical students, they are exposed to intense academic pressures, demanding clinical experiences, peer pressure, and emotionally stressful events during their period of undergraduate training. In the field of medical education, wellness and resilience have attracted lots of attention, owing to their positive impact on the personal and professional lives of medical students. The well-being and resilience of medical students are determined by a wide range of personal, family-level, and workplace-related attributes. Acknowledging the impact that lack of wellness and poor resilience can have on the working efficiency of medical students, it is indispensable that we must plan for specific strategies to systematically address them. In conclusion, wellness and resilience among medical students occupy a special place in medical education delivery. Considering the fact that these domains are not still addressed in medical colleges universally, it is the need of the hour to prioritize the well-being of medical students and empower them with resilience skills to ensure their optimal personal and professional growth and production of more compassionate and empathetic health-care professionals.

BDNF Val66Met polymorphism moderates negative symptom expression of bully victimization through resilience in Taiwanese youth

ABSTRACT Bully victimization is known to cause adverse psychological outcomes; however, resilience may mitigate the more adverse effects. Little is known regarding the role played by BDNF Val66Met polymorphism in youth resilience against psychological harm caused by bully victimization. In this cross-sectional study, a community sample of 598 participants (M age = 20.1 ± 1.4 years, 48.8% males) completed the questionnaire on bully victimization, resilience, and psychological symptoms. Salivary genomic DNA was genotyped for the BDNF Val66Met polymorphism. A path analysis was used to test the mediating role of resilience in the association between bully victimization and psychological symptoms. Furthermore, the BDNF genotype was added to the model to explore its moderating effects on the mediating role of resilience in the path with 5000 bootstrapped samplings using SPSS PROCESS Macro. Results revealed a significant indirect effect via resilience that accounted for 17.2% of the association between bully victimization and psychological symptoms. While the Val66Met polymorphism interacted with bully victimization to predict resilience scores, bully victimization was more strongly associated with poor resilience (F = 4.59, p = 0.03) in subjects with the Met/Met genotype (β=-3.22, p < 0.001), as compared to participants with other genotypes (β=-1.33, p = 0.051). Findings suggest a gene-environment interaction effect on psychological resilience in bully-victimized youth.

Harnessing physical activity monitoring and digital biomarkers of frailty from pendant based wearables to predict chemotherapy resilience in veterans with cancer

This study evaluated the use of pendant-based wearables for monitoring digital biomarkers of frailty in predicting chemotherapy resilience among 27 veteran cancer patients (average age: 64.6 ± 13.4 years), undergoing bi-weekly chemotherapy. Immediately following their first day of chemotherapy cycle, participants wore a water-resistant pendant sensor for 14 days. This device tracked frailty markers like cadence (slowness), daily steps (inactivity), postural transitions (weakness), and metrics such as longest walk duration and energy expenditure (exhaustion). Participants were divided into resilient and non-resilient groups based on adverse events within 6 months post-chemotherapy, including dose reduction, treatment discontinuation, unplanned hospitalization, or death. A Chemotherapy-Resilience-Index (CRI) ranging from 0 to 1, where higher values indicate poorer resilience, was developed using regression analysis. It combined physical activity data with baseline Eastern Cooperative Oncology Group (ECOG) assessments. The protocol showed a 97% feasibility rate, with sensor metrics effectively differentiating between groups as early as day 6 post-therapy. The CRI, calculated using data up to day 6 and baseline ECOG, significantly distinguished resilient (CRI = 0.2 ± 0.27) from non-resilient (CRI = 0.7 ± 0.26) groups (p < 0.001, Cohen’s d = 1.67). This confirms the potential of remote monitoring systems in tracking post-chemotherapy functional capacity changes and aiding early non-resilience detection, subject to validation in larger studies.

Profiles of Peer-Rejected Individuals: Their Attitudes toward the Intellectual Disability Population and the Mediating Role of Resilience

Literature shows that public perceptions toward people with intellectual disability (ID) tend to be negative, perhaps more so than toward any other population with disabilities, causing severe consequences on the quality of life of these people. Understanding factors associated with these attitudes may contribute to better integration of the ID population into society. This study focuses on the predictive role of school-age peer rejection and contemporaneous familial support on attitudes toward people with ID. Specifically, it aims to identify distinct profiles of people who experienced peer rejection during their school years and who experienced various levels of familial support during the rejection period, and to examine the disparities between these profiles regarding attitudes toward people with ID. An additional goal is to examine whether resilience can mediate the association between profiles of peer-rejected individuals and their attitudes toward individuals with ID. The research sample comprised 1063 Israeli adults reporting various levels of peer rejection during school years. Cluster analysis revealed two profiles of peer-rejected individuals that significantly differ in the level of familial support provided in the face of peer rejection. In accordance with the hypotheses, attitudes of peer-rejected individuals with poor familial support were more negative than those with high familial support and the mediating effect of resilience was significant. Findings emphasize the protective role of familial support in the face of peer rejection, contributing to the emerging literature that deals with the long-term effects of peer rejection and poor resiliency resources on negative attitudes toward out-groups.

Stress, resilience, and moral distress among health care providers in oncology during the COVID-19 pandemic.

The coronavirus pandemic has potential implications for stress levels and resilience among oncology healthcare professionals (HCPs). This study aims to assess perceived stress, resilience, and moral distress levels among oncology HCPs in Jordan during the pandemic and identify associated risk factors. An online cross-sectional survey was conducted among oncology HCPs in Jordan using three validated tools: Perceived Stress Scale (PSS), Connor-Davidson Resilience Scale (CD-RSIC), and Moral Distress Thermometer (MDT). Seven items were used to assess sources of stress. A total of 965 participants enrolled with a 74% response rate. The participants' ages ranged from 20 to 74 (mean = 32.74, SD = 5.197), with 79.1% males, 45.1% were physicians, 32.6% were public hospital workers, 57.1% were married, and 56.6% had children below 18 years. Findings indicated moderate perceived stress (Mean = 15.87, SD = 5.861), low resilience (Mean = 29.18, SD = 5.197), and high moral distress (Mean = 4.72, SD = 2.564). Females, unmarried individuals, and younger age groups exhibited higher PSS (p = 0.009, p < 0.001, and P<0.001) and lower resilience (p = 0.024, p = 0.034, and p = 0.001). Not having children below 18 years correlated with higher perceived stress (P < 0.001). In linear regression analysis, age and gender emerged as significant predictors of both perceived stress and resilience. Female participants reported stress related to the risk of contracting COVID-19 (p = 0.001), transmitting it to others (p = 0.017), social isolation (P < 0.001), and having children at home due to school closures (p = 0.000). A cohort of 239 participants repeated the survey within a two-month interval, revealed a statistically significant decrease in the CD-RISC scores (p < 0.001). Oncology HCPs in Jordan experienced moderate stress, high moral distress, and poor resilience during the COVID-19 pandemic. These factors may negatively affect the quality of oncology care. Urgent measures are necessary to support HCPs in coping with unforeseen circumstances in the future.

Neural Correlates of Trait Impulsivity among Adult Healthy Individuals.

: Impulsivity can be observed in individuals with or without mental illness. The discovery of neural correlates responsible for trait impulsivity can therefore help to understand the severity of psychiatric symptoms, personality characteristics and social adjustment. In this study, we aimed to identify the gray matter substrates of trait impulsivity in healthy individuals. : Seventy-five healthy individuals were enrolled. At baseline, trait impulsivity was assessed using the Barratt Impulsiveness Scale (BIS) and all participants underwent T1-weighted magnetic resonance imaging scan. Beck Anxiety Inventory (BAI), World Health Organization Quality of Life (WHOQOL-BREF) and Connor-Davidson Resilience Scale (CD-RISC) were also assessed. Mean cortical thickness (CT) and the local gyrification index (LGI) were calculated to perform whole-brain vertex-wise correlation analysis, which were performed to investigate the relationship between BIS scores and CT or LGI in each brain region. We also revealed the relationship between brain regions and psychological measurements. : Total BIS scores were significantly and negatively correlated with mean CT values in the left lateral occipital cortex (OC) and LGIs in the inferior frontal gyrus (IFG). Correlation analyses revealed that the lateral OC's mean CT values were negatively correlated with BAI scores and positively correlated with WHOQOL-BREF scores, while LGI in the IFG was positively correlated with CD-RISC scores. : Our study showed that trait impulsivity might be associated with the lateral OC and IFG in healthy individuals. Understanding the neural correlates of trait impulsivity could provide ways to expect high impulsivity, anxiety, and poor resilience in healthy adults.

Interstitial Lung Disease Is Associated with Sleep Disorders in Rheumatoid Arthritis Patients.

To evaluate sleep disorders and associated factors in patients with rheumatoid-arthritis-associated interstitial lung disease (RA-ILD). We performed an observational study of 35 patients with RA-ILD (cases) and 35 age- and sex-matched RA patients without ILD (controls). We evaluated sleep disorders (Oviedo Sleep Questionnaire), positive psychological factors (resilience using the Wagnild and Young Resilience Scale, emotional intelligence using the 24-item Trait Meta-Mood Scale), anxiety and depression (Hospital Anxiety and Depression Scale), quality of life (36-item short-form survey), and fatigue (Functional Assessment of Chronic Illness Therapy Questionnaire). Other variables studied included the Charlson Comorbidity Index (CCI) and RA activity according to the DAS28-ESR. Compared to the controls, the cases were characterized by poorer sleep quality with a higher prevalence of insomnia (42% vs. 20%; p = 0.039), greater severity of insomnia (p = 0.001), and lower sleep satisfaction (p = 0.033). They also had poorer resilience and emotional recovery and more severe anxiety and depression. A diagnosis of ILD was the only factor independently associated with the three dimensions of sleep quality. The predictors of poorer sleep satisfaction in patients with RA-ILD were age (β = -0.379), DAS28-ESR (β = -0.331), and usual interstitial pneumonia pattern (β = -0.438). The predictors of insomnia were DAS28-ESR (β = 0.294), resilience (β = -0.352), and CCI (β = 0.377). RA-ILD is associated with significant sleep disorders. RA-ILD seems to be an independent risk factor for sleep alterations, with a greater impact on insomnia. Age, disease activity, and comorbidity also play a role in sleep disorders in patients with RA-ILD.

Increased neural activity relates to greater neuropsychiatric symptoms and beta‐amyloid plaque load in cognitively normal older adults

AbstractBackgroundEpidemiological studies have shown that individuals predisposed to experiencing psychological stress, and those affected with diseases associated with chronic stress such as depression and anxiety have an increased risk of developing Alzheimer’s disease (AD). These findings may imply that poor resilience to psychological stress is not simply a characteristic of dementia, but may reflect mechanisms involved in disease etiology. In this study, we examined the level of neural activity as a potential mechanism of linking individual susceptibility to psychological stress and AD‐related neuropathology across the spectrum of AD.MethodsA total of 166 participants (mean age = 74.21; 90 Females) spanning diagnostic spectrums along cognitively normal (CN) individuals and AD patients was selected for analysis from the ADNI2 database based on the availability of resting state fMRI and AV45 PET data. Neural activity was quantified by applying the amplitude of low frequency fluctuations (ALFF) method to time series of fMRI blood oxygenation‐level‐dependent signals (in the frequency range of 0.01‐0.08 Hz) obtained during resting‐state fMRI (rsfMRI) scan. Amyloid pathology was quantified by AV45‐SUVR measures that were normalized to the cerebellum. Mini‐Mental State Exam (MMSE) and the total Neuropsychiatric Inventory Questionnaire (NPI‐Q) scores were used as cognitive and stress susceptibility measures.ResultsBehavioral measures of stress were significantly associated with brain Aβ indices and neural activity across the entire cohort, spanning from CN older adults to AD patients (ps&lt;0.05). Relationships between the neural activity, stress responses, and Aβ deposition, however, differ by diagnostic groups. As stress indicators increased, CN subjects exhibited increased activity in several brain regions including the regions within the default mode network (DMN), while AD participants exhibited decreased activity across the brain. Moreover, as brain Aβ load increased, CN participants experienced DMN hyperactivity, while AD participants experienced hypoactivity.ConclusionThese results indicate a potential link between heightened stress responses and increased susceptibility to the development of AD pathologies through neuronal hyperactivity, especially in the preclinical stage of AD. Alleviating stress and regulating stress responses may be important modifiable factors and intervention strategies that could help prevent and intervene the development of AD pathology.

The Chinese Aviation Network: An Empirical Temporal Analysis on Its Structural Properties and Robustness

Complex networks have encouraged scholars to develop an effective method for abstracting and optimizing aviation networks. However, researchers often overlook the aviation network’s temporal attribute and treat it as a static network. Aviation networks have strong temporal characteristics and the dynamic connection cannot be realistically described by a static network. It is necessary to more accurately and realistically represent these connections during the operation of an aviation network. This study explored temporal structures of the Chinese aviation temporal network (CATN) based on flight schedules and actual operational time data. Temporal networks based on time windows were represented to analyze the temporal topology features and robustness of the CATN. The results demonstrated the following: (1) based on the spatial-temporal aviation network, there is a morning departure peak (7:00–8:00) and an evening arrival peak at the airline hub (20:00–21:00); (2) examining the centrality of each airport in the CATN at various time intervals exposed fluctuations in their rankings, which could not be identified by a static network, and (3) the robustness of the CATN was found to be unaffected by time windows, but it displayed poor resilience against deliberate attacks, particularly when subjected to betweenness and closeness attacks, which target the network’s shortest paths. For obtaining a greater understanding of the operating situation of civil aviation, displaying the topological features and robustness of the temporal network is of great importance.

Synergistic effect of thermoplastic polyester elastomer and polytetrafluoroethylene in situ fibrillation on the resilience and compression strength of long‐chain branched polypropylene foam

AbstractExcellent resilience and compression resistance are the key characteristics of cushioning and water–oil separation materials. Although polypropylene (PP) offers excellent performance and affordability of PP, it exhibits poor resilience. To address this shortcoming, polymer blends with long‐chain branched PP (LCBPP), thermoplastic polyester elastomer (TPEE), and polytetrafluoroethylene (PTFE) were prepared via melt blending, and their mechanical properties were tested. The LCBPP/TPEE/PTFE composites were subjected to physical foaming using supercritical CO2 (scCO2) as the blowing agent. The synergistic toughening mechanism of the elastomer/nanofiber and the effect of the structure and crystallization of the dispersed phase on the foam resilience and foam compression strength were investigated. The results revealed that fibrous PTFE and spherical TPEE formed a composite dispersed phase in LCBPP. The impact and tensile strengths of the unfoamed LCBPP were found to have been simultaneously optimized owing to the synergistic effect of the elastomeric toughening of TPEE and the reinforcement of the PTFE fiber–induced fibrous crystal structure. Compared with pure LCBPP, the impact strength of the LCBPP/TPEE/PTFE composite increased by 216%, whereas its tensile strength decreased by only 6%. In particular, the synergistic effect of TPEE/PTFE improved the resilience and compression strength of the LCBPP foam. Compared with the pure LCBPP foam, the permanent strain of the LCBPP/TPEE/PTFE foam was reduced by 13.8% after five cycles of compression and its compression strength increased by 27.3%. The experimental results of our study could be used to prepare LCBPP foams with exceptional resilience, high compression strength, and good application prospects.

African Swine Fever Shock: China's Hog Industry's Resilience and Its Influencing Factors.

African swine fever has damaged the foundation of China's hog industry, caused a serious decline in hog production, highlighted the contradiction between supply and demand in the pork market, and led to major economic and social impacts. The industrial resilience of 31 Chinese provinces to African swine fever shock and its spatial and temporal differentiation characteristics from 2018 to 2021 were measured in this study from the two dimensions of resistance and recoverability. Using Geodetector, the key factors influencing the resilience of China's hog industry were explored. The results showed that 2018-2019 and 2020-2021 represented the resistance and recovery periods of the hog industry under African swine fever shock, respectively, with poor resilience characterizing the resistance period and improved resilience characterizing the recovery period. At the early stages of the African swine fever outbreak, the hog industries in Tianjin, Shanxi, Guangxi, and Yunnan had robust resistance due to the slaughter rate, economic level, mortality rate, carcass weight, and culling rate in those areas. At the most severe stage of the outbreak, resistance was generally poor in all provinces due to the slaughter rate, per capita consumption, and scale level at the time. During the period of rapid recovery in hog production, the recoverability of each province was very strong due to the industrial structure, culling rate, economic level, and resource carrying capacity at that time. During the reasonable adjustment period of hog production capacity, the recoverability based on the breeding sow inventory in 13 provinces, including Henan, Shandong, and other large hog-breeding provinces, was negative due to the scale level, slaughter rate, per capita consumption, and resource carrying at that time. Taking measures to enhance the resilience of the hog industry, strengthen the prevention and control of hog epidemics, improve the monitoring and early warning mechanisms, and enhance the ability of the hog industry to cope with major animal epidemics is recommended.

Development of a Resilience Parameter for 3D-Printable Shape Memory Polymer Blends.

The goal of this paper was to establish a metric, which we refer to as the resilience parameter, to evaluate the ability of a material to retain tensile strength after damage recovery for shape memory polymer (SMP) systems. In this work, three SMP blends created for the additive manufacturing process of fused filament fabrication (FFF) were characterized. The three polymer systems examined in this study were 50/50 by weight binary blends of the following constituents: (1) polylactic acid (PLA) and maleated styrene-ethylene-butylene-styrene (SEBS-g-MA); (2) acrylonitrile butadiene styrene (ABS) and SEBS-g-MA); and (3) PLA and thermoplastic polyurethane (TPU). The blends were melt compounded and specimens were fabricated by way of FFF and injection molding (IM). The effect of shape memory recovery from varying amounts of initial tensile deformation on the mechanical properties of each blend, in both additively manufactured and injection molded forms, was characterized in terms of the change in tensile strength vs. the amount of deformation the specimens recovered from. The findings of this research indicated a sensitivity to manufacturing method for the PLA/TPU blend, which showed an increase in strength with increasing deformation recovery for the injection molded samples, which indicates this blend had excellent resilience. The ABS/SEBS blend showed no change in strength with the amount of deformation recovery, indicating that this blend had good resilience. The PLA/SEBS showed a decrease in strength with an increasing amount of initial deformation, indicating that this blend had poor resilience. The premise behind the development of this parameter is to promote and aid the notion that increased use of shape memory and self-healing polymers could be a strategy for mitigating plastic waste in the environment.