High risk, high gain? Trade-offs between growth and resistance to extreme events differ in northern red oak (Quercus rubra L.).

Information about the resistance and adaptive potential of tree species and provenances is needed to select suitable planting material in times of rapidly changing climate conditions. In this study, we evaluate growth responses to climatic fluctuations and extreme events for 12 provenances of northern red oak (Quercus rubra L.) that were tested across three trial sites with distinct environmental conditions in Germany. Six provenances each were sourced from the natural distribution in North America and from introduced stands in Germany. We collected increment cores of 16 trees per provenance and site. Dendroecological methods were used to compare provenance performance and establish climate-growth relationships to identify the main growth limiting factors. To evaluate the provenance response to extreme drought and frost events, three site-specific drought years were selected according to the Standardized Precipitation Evapotranspiration Index (SPEI) and 2010 as a year with an extreme late frost event. Resistance indices for these years were calculated and assessed in relation to overall growth performance. We observed a high variation in growth and in the climate sensitivity between sites depending on the prevailing climatic conditions, as well as a high intra-specific variation. Overall, summer drought and low temperatures in the early growing season appear to constrain the growth of red oak. The resistance of provenances within sites and extreme years showed considerable rank changes and interaction effects. We did not find a trade-off between growth and resistance to late frost, namely, fast growing provenances had a high frost hardiness. Further, there was no evidence for a trade-off between growth and drought hardiness. Still, responses to drought or late frost differ between provenances, pointing to dissimilar adaptive strategies. Provenances from introduced (i.e. German) stands represent suitable seed sources, as they combine a higher growth and frost hardiness compared to their North American counterparts. Drought hardiness was slightly higher in the slow-growing provenances. The results provide a better understanding of the variable adaptive strategies between provenances and help to select suitable planting material for adaptive forest management.

Psychological Hardiness and Compassion Satisfaction Among the Turkish Red Crescent: The Case of 2023 Kahramanmaras Earthquake.

OBJECTIVES: This study assessed psychological hardiness and compassion satisfaction among the Türk Kizilay (Turkish Red Crescent) personnel and volunteers involved in the 2023 Kahramanmaras earthquake. Additionally, the relationship between compassion satisfaction and psychological hardiness was also investigated. METHODS: This cross-sectional study was conducted between March and July 2023. Participants completed an online survey, which included the Sociodemographic Information Form, Psychological Hardiness Scale, and Compassion Satisfaction Scale. The data was analyzed with SPSS version 25 (IBM Corp., Armonk, New York, USA), using a significance level of 95% and p < 0.05. RESULTS: The study involved 400 participants, comprising 84 (21%) personnel and 316 (79%) volunteers. Participants exhibited an average psychological hardiness level of 24.56 ± 7.25 and a compassion satisfaction level of 47.40 ± 17.28. A significant positive correlation was observed between compassion satisfaction and psychological hardiness (r = 0.571; p < 0.001). The results of logistics regression have revealed that the level of psychological hardiness is higher in males compared to females (OR = 1.930, CI = 1.115 - 3.340; P < 0.05) and is also higher in those with high compassion satisfaction compared to those with low compassion satisfaction (OR = 1.386, CI = 1.256 - 1.529; p < 0.001). CONCLUSIONS: The findings of this study indicate that individuals involved in disaster response should consider compassion satisfaction as an important tool for enhancing psychological hardiness.

Fostering organisational commitment: a resilience framework for private-sector organisations in South Africa.

Introduction: Organisations worldwide encounter three significant and challenging issues related to talent management: intense competition for skilled employees, elevated rates of employee attrition, and the ongoing struggle to attract top-tier talent. This research focused on investigating the interconnected dynamics among factors associated with employee retention, including organisational commitment, job embeddedness, and hardiness, in conjunction with resilience-related behaviours such as resilience and career adaptability. Methods: A cross-sectional survey design was used to gather quantitative data from a convenience sample of employees within the private sector in South Africa (N = 293). The self-assessments of the participants were assessed using a range of well-established and validated instruments. Correlation and regression analyses, followed by structural equation modelling, were utilised to construct a resilience framework designed specifically for private sector organisations in South Africa. Results: The results reveal significant associations between organisational commitment, job embeddedness, and hardiness (as retention-related attributes) and resilience and career adaptability (as resilience-related behavioural capacities). These relationships served as the basis for the development of a resilience framework for employees in South African private organisations. Discussion: In South African private-sector organisations, talent retention is crucial due to a talent shortage. The study found that employees have a strong emotional attachment to their organisations, are highly aligned with their jobs and communities, and display resilience. Organisational commitment, job embeddedness, and hardiness are key factors in reducing turnover, forming an effective retention strategy. This research contributes to the development of a resilience framework for South African private sector organisations.

Psychological hardiness, personality factors and coping styles in male patients of alcohol dependence syndrome.

Background: Alcohol dependence syndrome (ADS) is a result of complex interplay between biological, psychological, and sociocultural factors. While the biological (genetic) factors remain non-modifiable, better understanding of individual hardiness, personality variables, and coping mechanisms can help us in better understanding and comprehensive management of the illness. Methods: A cross-sectional comparative study was conducted at a tertiary care hospital. A total of 112 patients with ADS (test group) and 124 healthy age matched male controls were recruited from the same social milieu. They were assessed for hardiness, personality factors, and coping mechanisms using Hardiness scale, 16 Personality factors (5th Edition), and Brief COPE scale, respectively. The data were analyzed with Chi square, Student t tests (two tailed, unpaired), Mann Whitney U test, and Kruskal Waal analysis. Results: The test group had less hardy personality compared to control group (25% vs 43.54%) (p = 0.002). The level of Hardiness had an inverse relationship with alcohol dependence (p = 0.886). The majority of patients with ADS had high score on extraversion (p < 0.001), anxiety (p < 0.001), and tough-mindedness (p < 0.001), and the severity of alcohol dependence had an inverse relationship with extraversion (p = 0.004) and self-control (p = 0.002). The severity of ADS was directly related to the use of emotional support (p = 0.007) and substance use (p = 0.005) as coping mechanisms while the use of instrumental support (p = 0.001) and humor (p < 0.001) had inverse relationship with the severity of ADS. Conclusions: ADS had less hardy personality and the level of hardiness had inverse relationship with alcohol dependence. The severity of alcohol dependence had an inverse relationship with extraversion and self-control. In terms of coping styles, substance use and use of emotional support was found to be directly related with the severity of alcohol dependence while the use of instrumental support and humor were found to be protective against severe dependence.

Psychosocial correlates of flourishing in the late lifespan.

BACKGROUND: Flourishing is a primary dimension of psychological well-being that contributes massively to the development of an active, purposeful, and respectful life, full of meaning, values, and personal interests that nurture social ties. AIMS: This study primarily intended to examine the contribution of satisfaction with family relations, resilience, metacognitive efficiency, and crystallized intelligence in predicting a flourishing measure in cognitively healthy older adults. Moreover, the impact of gender was investigated on flourishing, satisfaction with family ties, resilience, and metacognitive efficiency. METHODS: One hundred and eighty 65-94-year-old community dwellers were recruited in Sardinia (Italy). Participants self-rated their flourishing, satisfaction with their family connections, psychological hardness (i.e., a dimension of resilience), and cognitive function, whereas global cognitive efficiency and vocabulary were assessed through two internationally validated objective tests. RESULTS: A hierarchical regression analysis revealed that 30% of the variance in the flourishing condition was explained by satisfaction with family ties, resilience, and metacognitive efficiency. In addition, males exhibited higher flourishing and satisfaction with family ties than females, and the former group also reported being more autonomous and acting proactively to influence its destiny. CONCLUSION: Emotional support and rewarding relations with family members, the ability to face stressful events, and a good perception of one's cognitive efficiency play a crucial role in promoting flourishing in late adulthood.

From Anxiety to Hardiness: The Role of Self-Efficacy in Spanish CCU Nurses in the COVID-19 Pandemic.

Background and Objectives: Evidence shows that throughout the COVID-19 pandemic, nurses suffered from emotional symptoms, yet in spite of this, few studies within "positive psychology" have analyzed the emergence/promotion of positive traits, such as hardiness. In this context, the present study aimed to test a model regarding the mediating role of self-efficacy between anxiety experienced at the beginning of the COVID-19 pandemic and hardiness assessed six months later among nurses in critical care units (CCU) in Spain. Materials and Methods: An observational, descriptive, prospective longitudinal study with two data collection periods: (1) from the 1 to the 21 June 2020 (final phase of the state of alarm declared in Spain on 14 March) in which socio-demographic and occupational variables, anxiety (Depression, Anxiety and Stress Scale, DASS-21), self-efficacy (General Self-Efficacy Scale, GSES) and basal resilience (Resilience Scale-14, RS-14) were assessed, and (2) a follow-up 6 months later (January-March 2021) in which hardiness (Occupational Hardiness Questionnaire, OHQ) was evaluated. To analyze the data, multivariate regressions were performed using the PROCESS macro (simple mediation, model 4). Results: A total of 131 Spanish nurses from CCUs, with a mean age of 40.54 years (88.5% women) participated in the study. Moderate and severe levels of anxiety were observed in 19.1% of the sample. Significant and positive correlations were observed between self-efficacy, hardiness and resilience (all p < 0.001). Significant negative correlations were observed between anxiety and self-efficacy (p < 0.001), hardiness (p = 0.027) and resilience (p = 0.005). The indirect effect of anxiety on hardiness through self-efficacy was significant (Effect (SE) = -0.275 (0.100); LLCI = -0.487, ULCI = -0.097), contributing to 28% of the variance, including resilience (p = 0.015), age (p = 0.784), gender (p = 0.294) and years of experience (p = 0.652) as covariates. A total mediation was observed (non-significant anxiety-hardiness direct effect; Effect (SE) = -0.053 (0.215), t = 0.248, p = 0.804, LLCI = -0.372, ULCI = 0.479). Conclusions: The results suggest that in Spanish CCU nurses, anxiety experienced at the beginning of the COVID-19 pandemic may contribute to the development of hardiness through positive resources such as self-efficacy.

Correlation of academic emotion and hardiness personality of undergraduate nursing students.

BACKGROUND: Academic emotion is a fundamental emotional concept closely linked to academic achievement. Understanding the connection between academic emotion and the personality trait of hardiness is pivotal in maintaining a stable career orientation throughout one's educational career. Therefore, in pursuit of fostering the robust growth of nursing careers, it is imperative to delve into the academic emotions experienced by undergraduate nursing students. This study endeavors to mitigate the impact of gender differences among nursing students while investigating the intricate relationship between academic emotions and the trait of hardiness in their personalities. METHODS: This study employed a cross-sectional research design. We gathered data from a convenient sample of 292 nursing students enrolled at Shanxi University of Chinese Medicine. Each student provided demographic information and responded to a general academic mood questionnaire, as well as a Hardiness Personality Rating Scale. Subsequently, we used canonical correlation analysis to evaluate the correlation between academic emotion and tenacity personality in 292 undergraduate nursing students. RESULTS: We discovered that academic emotions among nursing students are predominantly characterized by feelings of disappointment and boredom. Furthermore, personality hardiness is primarily influenced by the dimensions of engagement and control. It is important to note that a heightened level of negative, low-arousal academic emotions can diminish the level of engagement. The first typical correlation coefficient corresponding to academic emotion and hardiness were 0.660. The linear combination of standardized variables of the first typical variable corresponding to academic emotion (X1) = -0.444*negative hyperarousal -0.443 * positive hyperarousal + 0.694 * negative hypoarousal -0.260 * positive hypoarousal. The standardized variable equation of the first typical variable corresponding to hardiness personality (η1) = 0.235* hardiness -0.433* control -0.530* investment -0.303* challenge. CONCLUSIONS: Nursing students generally believe that their input is out of proportion to the return, and this unbalanced emotional experience will seriously affect their academic emotions in China. It is suggested that paying attention to cultivating their tenacious personality traits in the teaching process may help to enhance their academic emotions and enhance the sense of belonging and identity of nursing students engaged in the nursing profession.

Systematic Review: Measurement Methods and Concept of Resilience Among Seafarers.

Shipping is considered a demanding environment that can significantly impact seafarers' well-being and mental health. This review aims to examine existing literature on the resilience of seafarers, with a focus on the measurement methods used. Furthermore, this study intends to gain a comprehensive understanding of the current state of research in the field of seafarers' resilience, examining the variations in defining and conceptualizing resilience across different studies and contexts. The review identified 99 studies published between 2003 and 2023, with ten studies being included in the final analysis. These studies employed various measurement methods and provided definitions of resilience. Five questionnaires were identified, with the Dispositional Resilience Scale-15 (DRS-15) being the most commonly used. Two of the selected studies had a longitudinal follow-up, while eight were cross-sectional. Four studies related to tankers, and an additional four studies focused on naval vessels, while two studies did not specify the vessel type. The publications were distributed in the period between 2003 and 2013 (two papers) and between 2013 and 2023 (eight papers). The identified themes encompassed shipboard stressors (three papers), sleep problems (two papers), occupational groups or attitudes (two papers), experiences in war (two papers), and intervention measures (one paper), highlighting the multidimensional nature of resilience within the maritime field. This review suggests a research gap, as it reveals that the topic of resilience in seafaring has been sparsely represented. Despite an increasing interest in recent years, research remains limited, particularly in the civilian maritime sector. Therefore, this review highlights the importance of understanding and promoting resilience among seafarers. While the variety of questionnaires used was limited, achieving consensus and standardization in resilience measurement is essential for more comparable and consistent research findings. Recognizing resilience as a crucial resource can promote the development of targeted interventions and support systems, enhancing seafarers' well-being and mental health.

Dynamic modeling of stem water content during the dormant period in walnut trees.

Water content (WC) is a key variable in plant physiology even during the winter period. To simulate stem WC during the dormant season, a series of experiments were carried out on walnut trees under controlled conditions. In the field, WC was significantly correlated with soil temperature at 50 cm depth (R2 = 0.526). In the greenhouse, WC remained low as long as soil temperature was kept cold (<+5 °C) and increased after the soil temperature was warmed to +15 °C regardless of the date. Stem dehydration rate was significantly influenced by the WC and evaporative demand. A parsimonious model with functions describing the main experimental results was calibrated and validated with field data from 13 independent winter dynamics in Juglans regia L. orchards. Three functions of water uptake were tested, and these gave equivalent accuracies (root-mean-square error (RMSE) = 0.127-8; predictive root-mean-square error = 0.116). However, only a sigmoid function describing the relationship between the root water uptake and soil temperature gave values in agreement with the experimental results. Finally, the simulated WC provided a similar accuracy in predicting frost hardiness compared with the measured WC (RMSE ca 3 °C) and was excellent in spring (RMSE ca 2 °C). This model may be a relevant tool for predicting the risk of spring frost in walnut trees. Its genericity should be tested in other fruit and forest tree species.

Freeze dehydration vs supercooling in tree stems: physical and physiological modelling.

Frost resistance is the major factor affecting the distribution of plant species at high latitude and elevation. The main effects of freeze-thaw cycles are damage to living cells and formation of gas embolism in tree xylem vessels. Lethal intracellular freezing can be prevented in living cells by two mechanisms, such as dehydration and deep supercooling. We developed a multiphysics numerical model coupling water flow, heat transfer and phase change, considering different cell types in plant tissues, to study the dynamics and extent of cell dehydration, xylem pressure changes and stem diameter changes in response to freezing and thawing. Results were validated using experimental data for stem diameter changes of walnut trees (Juglans regia). The effect of cell mechanical properties was found to be negligible as long as the intracellular tension developed during dehydration was sufficiently low compared with the ice-induced cryostatic suction. The model was finally used to explore the coupled effects of relevant physiological parameters (initial water and sugar content) and environmental conditions (air temperature variations) on the dynamics and extent of dehydration. It revealed configurations where cell dehydration could be sufficient to protect cells from intracellular freezing, and situations where supercooling was necessary. This model, freely available with this paper, could easily be extended to explore different anatomical structures, different species and more complex physical processes.

Comparison of the supercooling points of questing Dermacentor variabilis adults in two populations on the Canadian prairies and implications for overwinter survival.

A comparison was made of the supercooling points (SCPs) of questing Dermacentor variabilis adults from two populations located ca. 800 km apart on the Canadian prairies. This is also the first study to examine whether there are seasonal fluctuations in the SCP of questing D. variabilis adults. The SCPs of adult ticks from Lizard Lake Community Pasture, a recently established population in west-central Saskatchewan, varied over spring and summer, with the median SCP warming over time. In addition, the SCPs of ticks from Lizard Lake Community Pasture were significantly higher than those of adult ticks collected from Sandy Hook in Manitoba, a population that has been established for decades. The off-host survival of adults from Sandy Hook between summer and spring has been shown previously to be significantly greater than that of adults from Lizard Lake Community Pasture. The findings of the present study suggest that there may be geographical variation in the SCPs of D. variabilis adults which may be associated with differences in overwinter survival. The relatively low SCPs of questing D. variabilis adults, and the ability of some adults to survive off-host during winter, may be factors contributing to the range expansion of this tick species in Canada.

Effect of constant and fluctuating low temperature on the survival of Tuta absoluta pupae.

Temperature is among the key factors impacting the establishment and spread of invasive pests. The tomato leafminer Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the major pests attacking Solanaceae plants and is known to possess overwintering capacities. However, the cold hardiness of T. absoluta pupae is poorly documented. In this study, we investigated the effect of constant temperature and stepwise cooling on T. absoluta pupae under laboratory conditions. For this purpose, bioassays on pupal development under constant temperature (5°C) for 30, 60 and 90 days, and stepwise changes in temperature (11, 10 and 8°C; in this order every 30 days), were assessed. We found that exposure to 5°C for 30 and 60 days did not affect the post-cooling emergence time of adults compared to the control. Pupae completed their development after 60 days of cold exposure at 5°C, but more adults emerged after 30 than 60 days. Even though alive pupae were observed after 90 days of cold exposure at 5°C, no adults emerged. External colours of pupae depended on the duration of cold periods, and green pupae obtained after 30 and 60 days were found to be positively correlated with the emergence of adults. When pupae were kept at 11°C for 30 days, 47% emerged, and when the temperature was changed to 10, only 12% of pupae emerged for the period 31-60 days. However, the decrease of the temperature to 8°C yielded no emergence for the period 61-90 days. Our study provides useful information to better understand the population dynamics of overwintering T. absoluta, and to underpin the development of monitoring and control strategies for the pest.

The role of genotypic and climatic variation at the range edge: A case study in winegrapes.

PREMISE: Changes in habitat suitability due to climate change are causing range shifts, with new habitat potentially available at cold range edges. We must predict these range shifts, but forecasters have limited knowledge of how genetic differences in plant physiological tolerances influence range shifts. Here, we focus on a major determinant of species ranges-physiological tolerance to extreme cold-to ask how warming over recent decades and genetic variation shape expansion across complex landscapes. METHODS: We examined how genotypes vary in maximum cold tolerance from 9 years of cold hardiness data across 18 genotypes from 13 sites, using winegrapes (Vitis vinifera subsp. vinifera) as a case study. Combining a Bayesian hierarchical dose-response model with gridded climate data, we then project changes in climatic suitability near winegrapes' current cold range-edge between 1949 and 2016. RESULTS: Plants increased maximum cold hardiness non-linearly with decreasing air temperature (maximum cold hardiness: -23.6°C), but with substantial (by 2°C) variation across genotypes. Our results suggest, since the 1980s, decreasing freeze injury risk has made conditions more favorable for all genotypes at the cold range-edge, but conditions remained more favorable for more cold hardy genotypes and in warmer areas. There was substantial spatial variation in habitat suitability, with the majority of suitably warm habitat located in a narrow north-south oriented strip. CONCLUSIONS: We highlight the importance of genotypic differences in physiological tolerances when assessing range shift potential with climate change. Habitat improvements were unevenly distributed over the spatially complex landscape, though, emphasizing the importance of dispersal in range expansion.

Independent and joint trajectories of depression and anxiety symptoms among Chinese male sailors throughout a prolonged non-24-h rotating shift schedule at sea: a parallel-process growth mixture modeling approach.

BACKGROUND: The predictive and protective effect of hardiness on mental health remains unclear among shift workers on non-24-h working schedules. The present study aimed to investigate the independent and joint trajectories of depression and anxiety symptoms and the role of hardiness during a prolonged period of non-24-h shift working schedule. METHODS: Four hundred nine Chinese male sailors (working on 18-h watchstanding schedule) were recruited and completed all 5-wave tests through online questionnaires (at Day 1, 14, 28, 42, 55, respectively) during a 55-day sailing. The questionnaires included sociodemographic variables, hardiness, depression and anxiety symptoms. Independent and joint trajectories of depression and anxiety symptoms were estimated by latent growth mixture models. The effect of hardiness on trajectories was examined by logistic regression models. RESULTS: 2 and 3 latent trajectories were identified for depression and anxiety symptoms, respectively. Based on initial levels and development trends, 3 distinct joint trajectories of depression and anxiety were identifed and named as: "Low-Inverted U" group (73.6%), "Moderate-Deterioration" group (6.9%), and "High-Stable" group (9.5%). Sailors with higher levels of hardiness were more likely to follow the "Low-Inverted U" trajectory of depression and anxiety symptoms (all p < 0.001). CONCLUSIONS: There existed individual differences in the trajectories of depression and anxiety. Hardiness may have a protective effect that can prevent and alleviate depression and anxiety symptoms. Therefore, hardiness-based intervention programs are encouraged among the shift workers on non-24-h working and rest schedules.

Time to budbreak is not enough: cold hardiness evaluation is necessary in dormancy and spring phenology studies.

BACKGROUND: Dormancy of buds is an important phase in the life cycle of perennial plants growing in environments where unsuitable growth conditions occur seasonally. In regions where low temperature defines these unsuitable conditions, the attainment of cold hardiness is also required for survival. The end of the dormant period culminates in budbreak and flower emergence, or spring phenology, one of the most appreciated and studied phenological events - a time also understood to be most sensitive to low temperature damage. Despite this, we have a limited physiological and molecular understanding of dormancy, which has negatively affected our ability to model budbreak. This is also true for cold hardiness. SCOPE: Here we highlight the importance of including cold hardiness in dormancy studies that typically only characterise time to budbreak. We show how different temperature treatments may lead to increases in cold hardiness, and by doing so also (potentially inadvertently) increase time to budbreak. CONCLUSIONS: We present a theory that describes cold hardiness evaluation is key to clarifying physiological changes throughout the dormant period, delineating dormancy statuses, and improving both chill and phenology models. Erroneous interpretations of budbreak datasets are possible by not phenotyping cold hardiness. Changes in cold hardiness were very likely present in previous experiments to study dormancy, especially when those included below freezing temperature treatments. Separating the effects between chilling accumulation and cold acclimation in future studies will be essential for increasing our understanding of dormancy and spring phenology in plants.

Psychological characteristics of the relationship between mental health and hardiness of Ukrainians during the war.

Objectives: The aim of our survey is to identify psychological features for the relationship between mental health and hardiness of Ukrainians during the war. Methods: The study involved 608 Ukrainians. We aimed to identify the relationship between mental health and hardiness and determine the differences in the peculiarities of mental health of people with different levels of hardiness. Also we looked for predictors for hardiness. Results: Subjective hardiness was found to be related to specific manifestation of mental health in the Ukrainian population. Strong correlations were revealed for hardiness with adaptation (ρ = 0.818), emotional comfort (ρ = 0.786), internality (ρ = 0.672), self-perception (ρ = 0.656,), escapism (ρ = -0.632) and mental health (ρ = 0.629). A prognostic model based on linear regression analysis identified the main predictors of personal hardiness and confirmed correlational analysis. Mental health (0.341), emotional comfort (ρ = 0.786), and escapism (-0.576) were found to be good predictors. Altogether 40.1% of Ukrainians scored low, 54.6% medium, and 5.3% high on individual hardiness. Conclusion: The study found that about every 4th Ukrainian demonstrates a low level of personal hardiness, which is accompanied by emotional discomfort and lack of internal locus of control, making them more susceptible to stress and illness. Additionally, they tend to distance themselves which significantly exacerbates the situation. It has been found that Ukrainians with low levels of personal hardiness exhibit escapism (with diversion of the mind to imaginative activity), a destructive defense mechanism that not only prevents effective problem solving but also has long-term negative consequences for their overall health. Consequently, especially people with low hardiness should receive specific support to stabilize their mental wellbeing and health overall.

Differences in military personnel's hardiness depending on their leadership levels and combat experience: An exploratory pilot study.

Constant challenges and permanently stressful conditions at military workplaces demand high levels of hardiness for military personnel. We aimed to determine possible differences in Ukrainian military personnel's hardiness depending on their leadership levels and existing combat experience. The study involved 543 Ukrainian service members (85.8% male and 14.2% female, aged 18 to 61 years). We used the Professional Hardiness Questionnaire and the Brief Resilience Scale. The obtained data showed that the higher leadership levels the military personnel had, the higher their hardiness was (up to the company commander level in our study). We revealed a significant predominance of professional challenge acceptance in the structure of military personnel's hardiness, followed by professional control and professional commitment. This proportion of professional hardiness components did not differ depending on service members' leadership levels. Additionally, we showed significantly higher hardiness stability after participating in combat operations in military leaders compared to service members without subordinates. Our findings necessitate hardiness examination during military personnel selection and its development during military training, in particular for deployment.

Hardiness and Expectations for Future Life: The Roles of Perceived Stress, Music Listening for Negative Emotion Regulation, and Life Satisfaction.

This study investigated the relationship between hardiness and Korean adults' expectations for future life, and verified the multiple mediating effects of perceived stress, music listening for negative emotion regulation, and life satisfaction on that relationship. The participants were 412 Korean adults aged 20-65 years. PROCESS Macro 3.5 Model 80 was used to examine the multiple mediating effects. Correlational analysis showed that hardiness was positively correlated with music listening for negative emotion regulation, life satisfaction, and expectations for future life, whereas it was negatively correlated with perceived stress. Perceived stress was negatively correlated with life satisfaction and expectations for future life, whereas music listening for negative emotion regulation was positively correlated with life satisfaction and expectations for future life. In the multiple mediation model, the relationships between hardiness and expectations for future life, the sequential mediating effect of perceived stress and life satisfaction, and the sequential mediating effect of music listening for negative emotion regulation and life satisfaction were significant. The direct effect of hardiness on expectations for future life was also significant, indicating that perceived stress, music listening for negative emotion regulation, and life satisfaction only partially mediated the relationship between hardiness and expectations for future life. It seems, thus, that perceived stress, music listening for negative emotion regulation, and life satisfaction play an important role in Korean adults' expectations for future life.

Hardiness and Zoom Fatigue on Nursing Students: A Cross-Sectional Study in Indonesia During Online Learning.

Introduction: The Covid-19 pandemic caused a change in learning methods to online learning. Zoom fatigue is a problem that many students experience during online learning. Zoom fatigue has an impact on physical and psychological problems so that it disrupts the online learning process. Hardiness is needed by students in order to adapt to online learning. Aim: The purpose of this study was to determine the relationship between hardiness and zoom fatigue in nursing students at Universitas Padjadjaran. Methods: This study used a quantitative approach with a cross-sectional study design. The sample technique used total sampling. Respondents were 480 nursing students at Universitas Padjadjaran. The research instrument used the Zoom Exhaustion & Fatigue Scale questionnaire and the Hardiness Instrument for the Online Learning. Results: This study shows that almost half of the respondents have a medium hardiness level category (45%) and a zoom level of medium fatigue category (46.67%). The results of the analysis show that there is a significant negative relationship between hardiness and zoom fatigue in nursing students at Universitas Padjadjaran. The higher the student's hardiness level, the lower the student's zoom fatigue level. High hardiness can increase focus during the learning process, increase student participation, and reduce stress and fatigue in students during online learning. Conclusion: Lecturers and students need to collaborate to improve the learning process and repeat mental health problems during online learning. This data forms the basis for university and school nurses in providing interventions for nursing students to reduce the problem of zoom fatigue.

A small survey of introduced Zaprionus indianus (Diptera: Drosophilidae) in orchards of the eastern United States.

The African fig fly, Zaprionus indianus (Gupta), is a generalist fruit fly that typically breeds in decaying fruits from over 70 plant species. The species has spread globally from its native range in tropical Africa, becoming an invasive pest on ripening figs in Brazil. First reported in the United States in 2005 in Florida, Z. indianus has since been documented as far north as Canada and is hypothesized to recolonize northwards from southern refugia each year. We sampled drosophilid communities over the growing season at 2 orchards in Virginia from 2020 to 2022 and 11 orchards along the East Coast during the fall of 2022 to quantify the abundance of Z. indianus relative to other drosophilids across locations, seasons, and fruit crops. Massachusetts had the northernmost population, with no Z. indianus detected in Maine and no correlation between latitude and relative abundance. Variation in Z. indianus relative abundance was high between nearby orchards and abundance was higher on peaches relative to apples within orchards. Comparisons of seasonal abundance curves between 2 Virginia orchards showed similar dynamics across years with individuals first detected around July and becoming absent around December, with peaks in late summer and mid-fall. The variation in seasonal and latitudinal abundance shown here highlights a need for broader sampling to accurately characterize the range, spread, and environmental tolerances of Z. indianus in North America.