• 한국산학기술학회논문지
• /
• 제18권10호
• /
• pp.373-381
• /
• 2017

본 연구는 간호사의 심리적 안녕감에 영향을 주는 요인과 경로를 설명하는 이론적 모형을 구축하고, 검증하기 위해 실시되었다. 본 연구의 대상자는 B광역시와 G도에 소재한 200병상 이상의 4개 종합병원 병원에 근무 중인 간호사이며, 자료수집은 2017년 7월 3일부터 8월 25일까지 시행하였다. 간호사의 직무순환 스트레스의 경로계수를 검증한 결과, 직무순환 스트레스는 도전적 스트레스 평가, 방해적 스트레스 평가, 심리적 안녕감에 통계적으로 유의한 영향을 미치며, 방해적 스트레스 평가는 심리적 안녕감에 부의 영향을 미치는 것으로 나타났다. 간호사의 직무순환 스트레스는 도전적 스트레스 평가, 방해적 스트레스 평가, 심리적 안녕감에 직접 효과가 있었으며, 방해적 스트레스 평가는 심리적 안녕감에 직접 효과가 있는 것으로 나타났다. 또한 간호사의 직무순환 스트레스는 방해적 스트레스 평가를 매개로 심리적 안녕감에 간접효과가 있는 것으로 나타났다. 간호사는 직무순환을 경험하며 도전적인 스트레스와 방해적 스트레스를 갖는다는 것을 확인하였고, 특히 방해적인 스트레스는 간호사의 심리적 안녕을 떨어뜨리기 때문에 간호조직의 노력과 관리가 필요하다. 이에 간호조직은 간호사에게 직무 순환이 도전적 스트레스 요인이 될 수 있도록 긍정적인 조직 환경을 조성하고 체계적인 전략을 세워야 할 것이다.

• Journal of Information Technology Applications and Management
• /
• 제27권6호
• /
• pp.15-29
• /
• 2020

Previous studies on the relationship between stress and performance have shown inconsistent results. Thus, this study focused on the effect of challenging stress among the two types of stress types and investigated the nonlinear relationship between the challenging stress and the performance. In particular, performance was divided into job performance, which is related to in-role behavior, and organizational citizenship behavior, which is characterized as extra-role behavior. Empirical results using 222 samples of Chinese workers have showed that challenging stress had a nonlinear relationship with job performance and organizational citizenship behavior. However, it was found that the shape of nonlinear relationship of the challenging stress on job performance and organizational citizenship behavior was slightly different. Finally, the theoretical and practical implications of this paper and future research directions are discussed.

• Fisheries and Aquatic Sciences
• /
• 제19권4호
• /
• pp.18.1-18.10
• /
• 2016

In this study, to clarify the function of $PoPLC-{\beta}1$, in response to stress challenge, we examined the $PoPLC-{\beta}1$ expression pattern in response to external stress (pathogen-associated molecular pathogen challenge and environmental challenge including temperature and salinity). $PoPLC-{\beta}1$ expression analysis of tissue from olive flounder showed that the messenger RNA (mRNA) was predominantly expressed in the brain, heart, eye, liver, spleen, and stomach. We also tested the mRNA expression of the $PoPLC-{\beta}1$ in the spleen and kidney of olive flounder by RT-PCR and real-time PCR following stimulation with lipopolysaccharide (LPS), concanavalin A (ConA), or polyinosinic:polycytidylic acid (PolyI:C) and compared with the inflammatory cytokines IL-1b and IL-6 in the stimulated flounder tissues. Each of the spleen and kidney and mRNA transcripts of $PoPLC-{\beta}1$ were increased 30- and 10-fold than normal tissue at 1-6 h post injection (HPI) with PolyI:C when the expression of $PoPLC-{\beta}1$ transcript was similar to LPS and ConA. We also tested the expression of $PoPLC-{\beta}1$ in response to temperature and salinity stress. The expression of $PoPLC-{\beta}1$ also was affected by temperature and salinity stress. Our results provide clear evidence that the olive flounder $PLC-{\beta}1$ signal pathways may play a critical role in immune function at the cellular level and in inflammation reactions. In addition, $PLC-{\beta}1$ appears to act as an oxidative-stress suppressor to prevent cell damage in fish.

• 한국콘텐츠학회논문지
• /
• 제20권8호
• /
• pp.128-137
• /
• 2020

기업가정신에 대한 학술연구는 오랜 기간 다양한 방면으로 연구 되어 왔지만, 기업가정신과 주관적 웰빙과의 관계에 대한 연구는 미비한 상황이다. 본 연구는 국내 기업의 경영자를 대상으로 기업가정신이 주관적 웰빙에 미치는 영향에서 도전적스트레스와 방해적스트레스가 주관적 웰빙에 어떠한 영향을 미치는지를 살펴보고, 이 관계에서 개인적 특성인 자기결정성 요소 중 관계성이 매개효과를 가지고 있는지를 확인하고자 한다. 그 연구결과로 첫째, 기업가정신은 도전적스트레스와 주관적 웰빙에 긍정의 영향을 주는 반면, 방해적스트레스에는 부정의 영향을 주었다. 둘째, 도전적스트레스는 관계성에 긍정의 영향을 주었고, 주관적 웰빙에는 긍정의 영향을 주었으나 미비하였으며, 방해적스트레스는 관계성과 주관적 웰빙에 모두 부정적인 영향을 주었다. 셋째, 도전적스트레스와 방해적스트레는 관계성을 통해 모두 주관적 웰빙에 긍정의 영향을 주었다. 이러한 연구 결과를 종합해 볼 때, 경영자의 기업가정신은 주관적 웰빙에 도움을 주고, 방해적스트레스는 주관적 웰빙을 방해 할 수 있는 요인이며, 관계성은 경영자의 주관적 웰빙을 높이는데 중요한 역할을 하고 있음을 확인하였다. 이와 같은 연구결과를 바탕으로 결론을 논의하고 시사점 및 후속연구의 방향을 제시하였다.

• 성인간호학회지
• /
• 제18권5호
• /
• pp.699-708
• /
• 2006

Purpose: This correlational study was undertaken to examine the relationship among daily life stress, self-efficacy, hardiness, and health behavior of university students. Methods: Two hundred sixty five university students were gathered from the undergraduate classes. Data were collected through self-reported question- naires which included daily life stress scale, self-efficacy scales, hardiness scales, and health behavior scales. Results: The daily life stress level had a maximum score of 4 with a mean score of 2.09 and the mean score of health behavior was 2.56. A negative correlation exists among daily life stress, self-efficacy, and health behavior. The self-efficacy is positively correlated with the health behavior. According to the hardiness factor, health behavior is positively correlated with hardiness. In the subareas, health behavior is positively correlated with control, commitment, and challenge. The self- efficacy factor was positively correlated with challenge. Conclusions: In conclusion, based onthe results of this study, both self-efficacy and hardiness are useful concepts in reducing the stress level and in increasing the health promoting behavior. Therefore, it is necessary to develop a program based on both self-efficacy and hardiness.

• 디지털융복합연구
• /
• 제18권9호
• /
• pp.159-167
• /
• 2020

본 연구는 경영자가 합리적인 의사결정을 할 때 경영자의 직무스트레스가 의사결정품질에 어떠한 영향을 미치는 지를 알아보고, 기업네트워크와 흡수역량을 통해 의사결정품질을 높일 수 있는지에 대해 실증분석 하고자 하였다. 이를 위해 중소기업 경영자를 대상으로 356명의 설문 데이터를 수집하였고, SPSS v.25와 AMOS v.24를 활용하여 분석하였다. 연구결과 직무스트레스 중 도전적스트레스는 의사결정품질에 정(+)의 영향을 주었고, 방해적스트레스는 의사결정품질에 부(-)의 영향을 주었으며, 기업네트워크와 흡수역량은 모두 의사결정품질에 정(+)의 영향을 주었다. 또한, 도전적스트레스와 방해적스트레스는 기업네트워크와 흡수역량을 통해 의사결정품질에 정(+)의 영향을 주는 것으로 나타났다. 이와 같은 연구결과를 통해 직무스트레스의 도전요인이 의사결정품질에 긍정적 영향을 주는 것을 검증하였으며, 기업네트워크와 흡수역량이 의사결정품질을 높이는 중요한 요인임을 확인할 수 있었다. 이와같이 결론을 논의하고 시사점 및 후속연구의 방향을 제시하였다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제17권2호
• /
• pp.244-249
• /
• 2004

The effects of supplemental betaine ($Betafin^{(R)}$) in the drinking water (50 g/kg) (WB) or feed (100 g/kg) (FB) were investigated on male broiler chickens ($Cobb{\times}Cobb$) exposed to 4 h episodes of heat stress at $34{\pm}1^{\circ}C$ on day (d) 35 and $36{\pm}1^{\circ}C$ from d 36 to 41. Prior to (d 1 to 34) and following heat exposure (d 35 to 41), betaine supplementation had no significant effect on body weight, total feed intake and cumulative feed conversion ratios of broilers. The total water intake of WB chicks was lower compared to controls. Prior to heat exposure, there was no difference in percentage of mortality among the three dietary groups. Following the heat challenge period, although higher percentage of control chicks succumbed to the heat challenge as compared to those of WB, it was not significantly different. The WB and FB chicks were less hyperthermic than controls in response to the heat challenge. Irrespective of treatment groups, the heat treatment resulted in a marked elevation in heterophil/lymphocyte ratios (HLR). The WB birds, however, had smaller increase in HLR than those of controls during heat exposure. Antibody production against Newcastle disease vaccine on day 35 was not affected by betaine supplementation. On d 42, WB birds had higher antibody production than those of FB. It is concluded that the WB treatment, as measured by HLR, antibody production and mortality rate, has advantages over the FB group under heat stress conditions.

• 한국식물병리학회:학술대회논문집
• /
• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
• /
• pp.90.1-90
• /
• 2003

Colonization of Pseudomonas chlororaphis O6, a nonpathogenic rhizobacterium, on the roots induced systemic resistance in cucumber plants against tai-get leaf spot, a foliar disease caused by Corynespora cassiicola. A cDNA library was constructed using mRNA extracted from the cucumber leaves 12 h after inoculation with C. cassiicola, which roots had been previously treated with O6. To identify the genes involved in the O6-mediated induced systemic resistance (ISR), we employed a subtractive hybridization method using mRNAs extracted from C cassiicola-inoculated cucumber leaves with and without previous O6 treatment on the plant roots. Differential screening of the cDNA library led to the isolation of 5 distinct genesencoding a GTP-binding protein, a putative senescence-associated protein, a galactinol synthase, a hypersensitive-induced reaction protein, and a putative aquaporin. Expressions of these genes are not induced by O6 colonization alone. Before challenge inoculation, no increase in the gene transcriptions could be detected in previously O6-treated and untreated plants but, upon subsequent inoculation with the pathogenic fungus, transcription levels in O6-treated plants rose significantly faster and stronger than in untreated plants. Therefore, the O6-mediated ISR may be associated with an enhanced capacity for the rapid and effective activation of cellular defense responses which becomes apparent only after challenge inoculation on the distal, untreated plant parts, as suggested by Conrath et al. (2002). This work was supported by a grant R11-2001-092-02006-0 from the Korea Science and Engineering Foundation through the Agricultural Plant Stress Research Center at Chonnam National University.

• 한국간호교육학회지
• /
• 제20권1호
• /
• pp.118-128
• /
• 2014

Purpose: The purpose of this study was to investigate perceived stressor, the characteristics of personality and stress responses of college students and to compare their gender differences. Method: This study was cross-sectional survey and participants were 146 college students. Data was collected by Perceived Daily Life Stressor Scale of college students, Lim's Character Style Inventory, Vulnerability of Personality, and Stress Response Index, demographic questionnaire from May to September, 2012 in two cities. Results: Friend relationship stressor(p=.024) and professor relationship stressor(p=.032) among daily life stressors of female students were significantly higher than male students. Fatigue(p=.009), anger(p=.046), somatization(p<.001) and total stress response(p=.049) of female students were significantly higher than male student. Challenge(p=.034) of LCSI of female students was significantly higher than male student and stability(p=.018) of male students was significantly higher than female students. Regression model of stress response in male college students was significant(F=35.18, p<.001) and influencing factors were vulnerability of personality and challenge($R^2$=.544). Regression model of stress response in female college students was significant(F=39.38, p<.001) and influencing factors were vulnerability of personality, perceived stress type, and sociability($R^2$=.612). Conclusion: These findings need to be reflected to develop stress management programs and mental health promotion programs for college students.

• IMMUNE NETWORK
• /
• 제16권3호
• /
• pp.165-175
• /
• 2016

Ambroxol is used in COPD and asthma to increase mucociliary clearance and regulate surfactant levels, perhaps through anti-oxidant and anti-inflammatory activities. To determine the role and effect of ambroxol in an experimental model of asthma, BALB/c mice were sensitized to ovalbumin (OVA) followed by 3 days of challenge. Airway hyperresponsiveness (AHR), lung cell composition and histology, and cytokine and protein carbonyl levels in bronchoalveolar lavage (BAL) fluid were determined. Ambroxol was administered either before the first OVA challenge or was begun after the last allergen challenge. Cytokine production levels from lung mononuclear cells (Lung MNCs) or alveolar macrophages (AM) were also determined. Administration of ambroxol prior to challenge suppressed AHR, airway eosinophilia, goblet cell metaplasia, and reduced inflammation in subepithelial regions. When given after challenge, AHR was suppressed but without effects on eosinophil numbers. Levels of IL-5 and IL-13 in BAL fluid were decreased when the drug was given prior to challenge; when given after challenge, increased levels of IL-10 and IL-12 were detected. Decreased levels of protein carbonyls were detected in BAL fluid following ambroxol treatment after challenge. In vitro, ambroxol increased levels of IL-10, IFN-γ, and IL-12 from Lung MNCs and AM, whereas IL-4, IL-5, and IL-13 production was not altered. Taken together, ambroxol was effective in preventing AHR and airway inflammation through upregulation of Th1 cytokines and protection from oxidative stress in the airways.