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Benthic macroinvertebrate community structure responses to multiple stressors in mining-influenced streams of central Appalachia USADrover, Damion R. 25 June 2018 (has links)
Headwaters are crucial linkages between upland ecosystems and navigable waterways, serving as important sources of water, sediment, energy, nutrients and invertebrate prey for downstream ecosystems. Surface coal mining in central Appalachia impacts headwaters by burying streams and introducing pollutants to remaining streams including excessive sediments, trace elements, and salinity. Benthic macroinvertebrates are widely used as indicators of biological conditions of streams and are frequently sampled using semi-quantitative methods that preclude calculations of areal densities. Studies of central Appalachian mining impacts in non-acidic streams often focus on biotic effects of salinity, but other types of pollution and habitat alteration can potentially affect benthic macroinvertebrate community (BMC) structure and perhaps related functions of headwater streams. Objectives were: 1) use quantitative sampling and enumeration to determine how density, richness, and composition of BMCs in non-acidic central Appalachian headwaters respond to elevated salinity caused by coal surface mining, and 2) determine if BMC structural differences among study streams may be attributed to habitat and water-quality effects in addition to elevated salinity. I analyzed BMC structure, specific conductance (SC, surrogate measure of salinity), and habitat-feature data collected from 15 streams, each visited multiple times during 2013-2014. BMC structure changed across seasonal samples. Total benthic macroinvertebrate densities did not appear to be impacted by SC during any months, but reduced densities of SC-sensitive taxa were offset by increased densities of SC-tolerant taxa in high-SC streams. Total richness also declined with increasing SC, whereas BMCs in high-SC streams were simplified and dominated by a few SC-tolerant taxa. Taxonomic replacement was detected in high-SC streams for groups of benthic macroinvertebrates that did not exhibit density or richness response, showing that taxonomic replacement could be a valuable tool for detecting BMC changes that are not evident from analyses using conventional metrics. Specific conductance, water-column selenium concentration, large-cobble-to-fines ratio of stream substrate, and relative bed stability were associated with changes in BMC structure. These results suggest multiple stressors are influencing BMCs in mining-influenced Appalachian streams. These findings can inform future management of headwater streams influenced by mining in central Appalachia. / Ph. D. / Humans rely on headwater streams to provide water of sufficient quantity and quality for use in fishing, swimming, and other designated purposes. In central Appalachia USA, surface coal mining impacts headwaters by burying streams and introducing various types of pollutants to remaining streams. Benthic macroinvertebrates, primarily stream insects, are widely used as indicators of stream-water quality because responses by certain groups of benthic macroinvertebrates to types and levels of pollution are known. Studies of central Appalachian coal mining impacts in non-acidic streams often focus on the effects of elevated salinity on benthic macroinvertebrate community (BMC) structure; however, other types of pollution and habitat alteration can also potentially affect BMC structure. Study objectives were to determine how BMCs in central Appalachian headwaters responded to elevated salinity caused by coal surface mining, and to determine if BMC structure differences among study streams may be caused by habitat and water-quality effects other than elevated salinity. I analyzed BMC, salinity, and habitat data collected from 15 streams, each visited up to six times during 2013-2014. I found that BMC structures varied seasonally, likely caused by natural life cycle variation of benthic macroinvertebrates. Streams in watersheds impacted by more areal coal mining disturbance tended to have higher levels of salinity, water selenium concentrations, and fine sediments, and fewer types of benthic macroinvertebrates although total BMC densities were comparable to those in less-disturbed streams. The study revealed that BMCs in mining-influenced streams were less diverse and were likely functioning less effectively than BMCs in forested reference streams. Also, the measurement and analysis methods used to characterize BMC structural responses to pollution influence assessments of stream condition. Understanding the responses of benthic macroinvertebrate structure to changes in habitat and water quality in mining-influenced streams can inform future stream management efforts.
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Impact of Social Support on Turnover Intentions and Burnout Among Hispanic Religious LeadersMontenegro, Sandra 01 January 2024 (has links) (PDF)
In some cases, role stressors force members of the clergy to rely on social support to maintain themselves serving in ministry. In this study, the Job Demands and Resources (JD-R) model is applied to investigate the interaction between vocational demands (role stressors and occupational distress) and resources (social support) in predicting burnout and turnover intentions in Florida clergy. A cross-sectional survey design was used to assess the buffering role of social support systems in mitigating turnover intentions and the overall impact on clergy burnout. The findings suggest that role overload, role conflict, and occupational distress are significantly related to burnout, with occupational distress exhibiting the strongest correlation. Supervisor support was found to moderate the relationship between role overload and burnout. The study highlights the complex dynamics between work-related stressors, support systems, and occupational well-being in the context of religious leadership and emphasizes the need for further research with larger sample size to confirm and expand upon these findings.
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A qualitative analysis of stressors affecting 999 ambulance call handlers' mental health and well-beingPowell, Catherine, Fylan, Beth, Lord, Kathryn, Bell, F., Breen, Liz 28 September 2022 (has links)
Yes / Purpose
The 999 ambulance call handler is critical in responding to emergency patient treatment; however, the call handlers are often a hidden component of the healthcare workforce and an under-researched group. The objective of this study is to understand stress triggers experienced by 999 ambulance call handlers that could lead to burnout and examine personal and organisational mechanisms and strategies which reduced the risk of burnout.
Design/methodology/approach
A single interview case study approach applying qualitative methods was undertaken. Participants were identified through a purposive sample of 999 ambulance call handlers with the Yorkshire Ambulance Service National Health Service Trust (UK). Participants were interviewed via telephone between July 2019 and September 2019.
Findings
In total, 18 staff participated in this study. Societal factors including public incivility and media representation and organisational factors, such as a demanding environment, lack of appreciation and career progression, training issues and protocols were key stressors. Organisational well-being services were helpful for some, but for others lacked accessibility and appropriateness. Positive public feedback and speaking with peers bolstered well-being. 999 ambulance call handlers suggested that sufficient breaks, co-design or feeding back on training and protocols and creating more informal opportunities to discuss ongoing everyday stressors as methods to reduce stress and burnout.
Originality/value
This paper explores a previously under researched area on stressors and potential burnout in 999 call handlers. This paper highlights the need for improved organisational support services and appropriate public and sector peer recognition of the role of ambulance 999 ambulance call handlers. / This research was funded by the University of Bradford Research Development Fund. This research was supported by Yorkshire Ambulance Service NHS Trust, and the National Institute for Health Research (NIHR) Yorkshire and Humber Patient Safety Translational Research Centre (NIHR Yorkshire and Humber PSTRC).
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Explaining the Occupational Class Gradient in Health Among Swedish Employees: Physical and Psychosocial Work-Related StressorsLutters, Marie-Claire January 2018 (has links)
The work environment constitutes a key social determinant of health, yet previous research is relatively limited vis-à-vis the contribution of both physical and psychosocial work-related stressors on occupational class differences in health among Swedish employees. This study used cross-sectional data from the Swedish Level of Living Survey 2010 to assess the mediating effect of physical and psychosocial work-related stressors to occupational class differences in physical and mental ill health in Sweden. Disparities between gender were also considered. A sub-sample of 2,624 full- and part-time employed individuals aged 18-65 was analysed using logistic regression. Employees who belonged to higher occupational classes had a lower risk of physical ill health compared to employees from lower occupational classes when age, gender and part-time work is accounted for – but there was no evidence of an occupational class gradient in mental ill health. Similar results were observed among men and women. In line with previous research, differential exposure to physical work-related stressors explained most of the occupational class gradient in physical ill health, yet certain psychosocial work-related stressors were also influential. Future research should further examine what other work-related factors – or social determinants of health – can help explain the association between occupational class and mental health.
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Die identifisering van veerkragtigheid en nie-veerkragtigheid by die middel-adolessent in ‘n voormalige Model C-skool (Afrikaans)Parsons, Joreta 05 September 2005 (has links)
The purpose of this study was to develop a way of identifying resilient and non-resilient middle-adolescent learners, by means of an instrument or otherwise, in a former Model C-school. The research paradigm is pragmatism and a methodology of mixed methods was used. A questionnaire was developed and qualitative interviews were conducted to verify the results of the questionnaire. The theoretical framework of resilience as well as the developmental phase of middle-adolescence were studied. After conducting a pilot study, the necessary changes were made and an experimental version of the questionnaire was compiled on the basis of Kumpfer’s Transactional Model. This framework includes both processes and outcomes and six main constructs were specified, viz. stressors or challenges, the environmental context, person-environment-transactional process, internal resilience factors, resilience processes and outcomes or means of reintegration. Focus was placed on internal resilience factors. The “Veerkragtigheidsvraelys vir Middel-adolessente (toets)” (VVM-A(t)) (Resilience Questionnaire for Middleadolescents (test)), was compiled consisting of forty two self-evaluation questions using a continuum scale. This self-evaluation scale gives the respondent the opportunity to respond on a continuum line between not like me at all and exactly like me. The place of research, a secondary school in an area reflecting the diversity of the South-African population, was selected by means of convenience sampling and all the grade 8 and 9 learners (294 participants) completed the VVM-A(t). Two factors were identified by means of factor analysis viz. internal locus of control and external locus of control. The VVM-A, consisting of 22 items, was finalised from these results and the participants’ scores were recalculated for the selected items. Interviews for the purpose of verification or rejection of the VVM-A were conducted with twelve participants, four from the group with high scores, four from the group with low scores and four learners that grouped near the median. The in-depth interviews confirmed the results on the VVM-A. This instrument can therefore be regarded as valid and reliable to identify the resilient and non-resilient middle-adolescent learner. / Dissertation (MEd (Educational Psychology))--University of Pretoria, 2006. / Educational Psychology / unrestricted
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Vyhodnocování, zvládání a snižování stresu / Stress Evaluation, Coping and ReductionKršková, Božena January 2010 (has links)
The Master’s thesis "Stress evaluation, coping and reduction" dealing with the currently very topical issue the stress acting on employee working conditions. It analyzes the types of stress, signs, symptoms and effects on health and work performance of employees. The thesis is focused on the factors causing stress, their identification and reduction of the company. The theoretical part is focused on theoretical analysis of the problems. The practical part is devoted to the measurement of stressors in the working environment for catering JHREST s.r.o. employees. The work conclusion includes a proposal of the stress factors reduction in the company.
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An investigation into the factors that nurses working in critical care units perceive as leading to burnoutMbuthia, Nickcy Nyaruai 01 February 2010 (has links)
Burnout is reflected in pathological emotional depletion and maladaptive detachment that is a secondary result of exposure prolonged occupational stress. It is comprised of three dimensions, namely, emotional exhaustion, depersonalization and reduced personal accomplishment. It is becoming increasingly recognized as one of the most serious occupational hazards for nurses who work in critical care units. The objectives of this study are to assess the prevalence of burnout among a sample of nurses who worked in the critical care units in a particular hospital in Kenya, to analyze factors that contributed to the development of burnout and to identify measures for the mitigation of burnout.
For this study, the researcher utilized a mixed methods research design in two phases. Phase one assessed the prevalence of burnout in nurses working in the critical care units by making use of the Maslach Burnout Inventory – Human Services Survey. Focus groups discussions were then held in Phase two to investigate the factors that the nurses perceived as the main causes of burnout and to solicit their ideas about it could be mitigated. Convenience sampling and purposive sampling were used in the two phases of the study respectively. / Health Studies / M.A. (Health Studies)
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Occupational stressors of newly qualified social workers in non-governmental organisations : experiences and coping strategiesJanse van Rensburg, Joseph 12 1900 (has links)
Thesis (M Social Work (Social Work))--University of Stellenbosch, 2009. / ENGLISH ABSTRACT:
An exploratory and descriptive research design, in combination with quantitative and
qualitative research approaches were utilised to elucidate the experiences of newly
qualified social workers in NGOs, with regards to occupational stress and the coping
strategies employed by these workers in response. The motivation for this study
came from a distinct lack of research related to the experience of occupational stress
by newly qualified social workers working within NGOs. The goal of this study is thus
to gain a better understanding of the experiences of occupational stress by newly
qualified social workers practicing in NGOs, as well as elucidating the coping
strategies they employ, so as to make recommendations focussing on key areas,
where alleviation of occupational stress is vital.
The literature study first focussed on the South African NGO, and the newly qualified
social worker within the NGO, to provide a contextual basis for the experience of
occupational stress by newly qualified social workers. The literature study then
explored the range of occupational stressors that might be experienced by newly
qualified social workers, to gain a better understanding of the diversity of stressors
present within NGOs, and their aetiology. Lastly, the literature study focussed on the
variety of coping strategies available to newly qualified social workers, for coping
with, and alleviation of occupational stress.
The researcher utilises a purposive sample of 20 newly qualified social workers,
These workers had practiced for up to 24 months, in the Boland area of the Western
Cape. An interview schedule was used as measuring instrument.
The result of the investigation confirmed that particular occupational stressors
affecting newly qualified social workers Whilst there were a wide spectrum of
stressors experienced by newly qualified social workers on an occasional basis,
occupational stressors such as very heavy workloads, unsatisfactory remuneration
and the multivariate problems of the client population stood out as stressors
experienced on a very frequent basis. The second conclusion to be drawn from this
study was that personality traits may play less of a role than expected in determining how much newly qualified social workers experience occupational stress. The third
conclusion to be drawn from this study was that a wide range of coping strategies
were not only available to newly qualified social workers but that a great deal were
effective in helping newly qualified social workers to alleviate their occupational
stress.
Recommendations made by this study pointed to the importance of NGOs as well as
government targeting stressors such as heavy workloads and remuneration, with the
aim of retaining skilled social workers just entering into the industry. Another
recommendation focussed on the fact that newly qualified social workers have to
take ownership over their occupational stress, and actively work to alleviate it in a
positive manner. / AFRIKAANSE OPSOMMING:
‘n Verkennende en beskrywende navorsingsontwerp, sowel as 'n gekombineerde
kwantitatiewe en kwalitatiewe navorsingsbenadering is benut om die ervarings van
pas gekwalifiseerde maatskaplike werkers in nie-regeringsorganisasies se werkstres
en streshanteringstrategieë te ondersoek. Die studie is gemotiveer deur 'n gebrek
aan navorsing oor die ervarings van werksverwante stres by pas gekwalifiseerde
maatskaplike werkers wat by NROs werksaam is. Die doel van die studie was dus
om 'n beter begrip vir die ervarings van werksverwante stres by pas gekwalifiseerde
maatskaplike werkers in NROs te ontwikkel, sowel as om die betrokke maatskaplike
werkers se streshanteringstrategieë te belig, ten einde aanbevelings te kan maak
oor sleutelareas waarop gefokus behoort te word in die verligting van werksverwante
stres.
Die literatuurstudie fokus op die NRO-sektor in Suid-Afrika en die pas
gekwalifiseerde maatskaplike werker, ten einde 'n kontekstuele grondslag vir die
ervarings van die betrokke maatskaplike werkers se stressors te bied. Die
literatuurstudie eksploreer voorts die reeks van stressors wat deur die betrokke
maatskaplike werkers ervaar kan word, ten einde 'n beter begrip van die diversiteit
van stressors en die etiologie van die stressors te ontwikkel. Die studie fokus ook op
die verskeidenheid strategieë wat beskikbaar is aan pas gekwalifiseerde
maatskaplike werkers, om hulle werksverwante stres te verminder.
Die navorser het 'n doelbeswuste steekproef van 20 pas gekwalifiseerde
maatskaplike werkers benut. Hierdie werkers is almal die afgelope 24 maande
werksaam in die Boland area van die Wes-Kaap. 'n Onderhoudskedule is as
navorsingsinstrument benut. Die bevindinge van die navorsing bevestig dat die pas
gekwalifiseerde maatskaplike werker wel spesifieke werksverwante stressors beleef.
Alhoewel 'n groot verskeidenheid stressors soms aanwesig is, kom werksverwante
stressors soos groot werksladings, onbevredigende numerering en die
verskeidenheid van die verbruikersisteem se probleme meer algemeen voor. Die
tweede bevinding vanuit hierdie studie dui daarop dat persoonlikheidstrekke speel
waarskynlik 'n mindere rol as wat verwag word, in die aanwesigheid van stres by die pas gekwalifiseerde maatskaplike werker. Die derde bevinding dui daarop dat 'n
groot verskeidenheid stresverligtingstrategieë beskikbaar is om werksverwante stres
te verlig en dat hierdie strategieë wel effektief aangewend kan word.
Die aanbevelings vanuit hierdie studie wys op die belangrikheid daarvan dat NRO's
en die regering stressors soos groot werksladings en numerering verlig, ten einde
pas gekwalifiseerde maatskaplike werkers vir die praktyk te werf. Ander
aanbevelings fokus op die feit dat pas gekwalifiseerde maatskaplike werkers
eienaarskap van hulle werksverwante stressors moet aanvaar deur aktief hulle
werkstres op 'n positiewe wyse te hanteer.
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Alcohol Use among the Elderly in Edmonton, Alberta: a Multivariate AnalysisWatson, Jack Borden 05 1900 (has links)
A model of social stressor variables, social integration variables and demographic control variables was tested to assess their impact on alcohol use among the elderly. A secondary analysis of a survey on alcohol use among the elderly in Edmonton, Alberta, Canada, was conducted to test the major hypotheses of the study. Contingency table analysis, using gamma and partial gamma as correlation coefficients, was utilized in the data analysis. The first hypothesis, in regard to the positive relationship of social stressors with alcohol use, was confirmed. The best predictors of alcohol use among the social stressor variables were usual occupation, length of retirement, annual income, and subjective health status. The second hypothesis, that the social integration variables would be negatively related to alcohol use, received only moderate support. The results of the analysis indicated that six of the ten social integration variables were negatively related to alcohol use. Only three of these variables, retirement status, religious participation, and marital status, were statistically significant. Hypothesis three also was not confirmed. The introduction of the social integration variables did not substantially decrease the strength of the relationship between social stressors and alcohol use. Gender and age were also introduced as control variables for the relationship between social stressors and alcohol use. Age had only a limited impact on the zero-order relationships. Gender demonstrated a strong relationship with alcohol use. Statistical analyses indicated that gender was the strongest predictor of alcohol use of all the variables in the analysis. The nature of the zero-order relationships of four of the six stressor variables changed when gender was controlled, and the partial relationships decreased in strength. It was suggested that future research on alcohol use among the elderly should focus on gender differences.
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Pracovní stres českých zaměstnanců a jeho souvislost se zaměstnaneckým statusem a osobním životem / Working stress of Czech employees and its relation to job status and personal lifeVeverková, Martina January 2016 (has links)
This paper explores issues of the work stress of Czech employees using the data from Quality of working life survey conducted in Sociological institute of Czech Academy of science in 2014. However work stress is generally seen as a serious problem, employers in the Czech Republic do not take it enough into account yet. The aim of this paper is to define groups of employees which are the most endangered by work stress, sources of stress (stressors) and explore the relationship between work stress and life satisfaction with special focus on employee status. As a theoretical background, we use the theory of spillover (transmission between life spheres), theories of high status stress and low status stress and balance models of work stress (namely Job demands-control model and Effort- reward imbalance model). Apart of work demands, overtime work, low social support and negative phenomenon as well as monotonous and unattractive job content and poor job security were identified as important stressors. As the most endangered group were identified those who have lower employee status, high level of stress and also lower satisfaction in all studied aspects of life. Situation of this group can be seen as a serious social problem. All identified stressors occur in this group together with other unfavourable...
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