• 치위생과학회지
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• 제17권5호
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• pp.439-446
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• 2017

The purpose of this study was to investigate the effect of empathic ability and campus life stress on the stress coping behaviors among 395 dental hygiene students. The analysis was performed using PASW Statistics ver. 18.0, and the following conclusions were obtained. The empathic concern factor was the highest in the subscale of empathic ability (3.60). The interpersonal relationship stress was 1.65 and the task-related stress was 2.72. The stress coping behaviors were the highest among the sub-domains, with 3.69 for wishful thinking. The differences of stress coping behaviors according to general characteristics were as follows. The lower the age and grade, the higher the problem-focused coping; when they were religious there was a high pursuit of seeking social support. When they were satisfied with their economic level, wishful thinking was high. There was a low negative correlation between empathic concern and interpersonal relationship stress in campus life (p<0.01). There was a positive correlation between personal distress and task-related stress (p<0.001). The relationship between empathic ability and stress coping behaviors was most associated with personal distress and wishful thinking. Among the sub-domains of stress coping behaviors, factors that have a common impact on personal distress and seeking social support are viewpoint acceptance. Factors supporting emotional focus and wishful thinking were task-related stress. Dental hygiene students are not able to completely eliminate the stress that they are actually under. However, as the research results show, it is necessary to use stress coping techniques to cope effectively with individual tendencies and situations, and to improve the ability to sympathize with another individual.

• 디지털융복합연구
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• 제14권5호
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• pp.207-215
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• 2016

본 연구는 직무스트레스가 직무특성과 조직유효성 간의 관련성에 미치는 영향을 실증적으로 분석하였다. 이를 위해 부 울 경 지역의 중소기업 중 제조업 및 서비스업에 종사하는 근로자를 대상으로 설문조사를 실시하여 379개의 데이터를 수집하였다. 본 연구결과에 의하면, 역할갈등, 역할모호성, 역할과다 수준에 따라 직무특성과 조직유효성 간의 관련성에 일부 차이가 있는 것으로 나타났다. 따라서 본 연구에 의하면 다양한 직무특성을 활용하여 조직유효성을 높이고자 하는 중소기업들의 경우 직무스트레스를 적절히 통제하는 것이 조직유효성 증대에 유용할 것으로 판단된다. 또한 향후 대기업과 중소기업간의 비교를 통한 보다 심도 있는 연구를 기대한다.

• 동의신경정신과학회지
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• 제21권2호
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• pp.61-73
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• 2010

Objectives : The purpose of this study was to assess anti-depressive effects of Bee Venom(BV) on an Animal Model of Depression induced immobility stress. Methods : There was 2 pre-experiments MTT(3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay and Western blot test and 3 main experiments ; forced swimming test, tail suspension test and Y-maze task. Male rats were used for main experiment. The subject was divided into 4 groups(1. control group injected only saline, without immobility stress 2. Negative group injected saline after 2 hours immobility stress 3. Positive group injected Amitriptyline after 2 hours immobility stress 4. BV group injected Bee Venom after 2 hours immobility stress). Each group consisted of 6 rats. Forced swimming test, tail suspension test, Y-maze task were used to evaluate anti-depressive effect of Bee Venom. Results : In MTT assay, as the density of BV increased, the existence rate of primary neuronal cell increased. In Western blot test, the density of CREB and AKT was increasing as time went by. In forced swimming test, BV group showed immobility decreased more than Normal group and Positive group. In tail suspension test, Normal group and Positive group showed immobility decreased more than BV group. In Y-maze task, BV group showed immobility decreased more than Normal group, but Positive group showed immobility decreased more than BV group. Conclusions : These results suggest that Bee Venom may have anti-depressive effect on depression.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.646-649
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• 2007

Although the up-to-date(high) technique is developing and automating in many fields, the center of the all fields is closely connected with the human resource. Also, the railway driver is required to have both high technique and high level of mental work. Therefore, this research will grasp the types of the railway driver groups through railway driver's task stress analyze(JCQ and Job Content Questionnaire), and then analyze the human errors which the types can occur. Finally, this research will propose the way to reduce the human errors.

• 말소리와 음성과학
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• 제16권3호
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• pp.33-38
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• 2024

The present study investigated the perceptual cues utilized by Korean L2 learners of English in recognizing lexical stress in English nonwords, with a focus on the roles of fundamental frequency (F0) and duration. Twenty-three Korean learners of English participated in a sequence recall task involving nonword stimuli under five different conditions: (1) the naturally-produced stimuli, (2) the duration-only condition, (3) the F0-only condition, (4) the duration-F0 matching condition, and (5) the duration-F0 conflicting condition. The results demonstrate that F0 is the primary cue for stress perception among Korean L2 learners, whereas duration acts as a secondary cue, particularly when F0 is unreliable or absent. These findings highlight the influence of L1 prosodic structures on L2 perception and suggest that Korean L2 learners adapt their perceptual weighting of stress based on cue availability. This study contributes to the understanding of the role of cue weighting in L2 prosodic acquisition.

• Nuclear Engineering and Technology
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• 제44권4호
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• pp.415-420
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• 2012

It is important to understand the amount of time required to execute an emergency procedural task in a high-stress situation for managing human performance under emergencies in a nuclear power plant. However, the time to execute an emergency procedural task is highly dependent upon expert judgment due to the lack of actual data. This paper proposes an analytical method to estimate the operator's performance time (OPT) of a procedural task, which is based on a measure of the task complexity (TACOM). The proposed method for estimating an OPT is an equation that uses the TACOM as a variable, and the OPT of a procedural task can be calculated if its relevant TACOM score is available. The validity of the proposed equation is demonstrated by comparing the estimated OPTs with the observed OPTs for emergency procedural tasks in a steam generator tube rupture scenario.

• 한국항해항만학회지
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• 제38권6호
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• pp.615-621
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• 2014

해상교통관제사들의 과도하고 장기화된 스트레스가 그들의 삶의 질 뿐만 아니라 제공되는 서비스의 질에도 부정적인 영향을 미쳐 결과적으로 업무과중을 일으켜 선박사고 발생 위험률을 높일 수 있다는 데에 주목하고 스트레스 수준을 측정함과 아울러 스트레스에 영향을 미치는 직무스트레스 유발요인들을 추출해 보았다. 표준화된 측정도구(KOSS, PWI)로서 관제사들의 스트레스 수준을 측정해 보고, 배경적 변수(연령, 근무경력, 해상교통량 등)에 따라 스트레스에 차이가 있는가를 분석하였다. 그 결과, 관제사들은 일반인보다 높은 수준의 사회심리적 스트레스를 겪고 있었으며 연령 및 근무경력 별 스트레스 수준은 역U자 형태를 보였다. 또한 스트레스를 유발하는 직무환경적 요인들을 규명하였으며, 스트레스 관련 교육 및 근무환경 개선, 새로운 휴식시설 마련 등은 직무스트레스를 유의하게 낮게 함을 밝혔다. 그리고 근무환경, 교대근무 등의 직무환경적 스트레스 요인으로서 관제사의 직무스트레스를 설명할 수 있는 회귀모형을 도출하였다. 본 연구는 인적재해발생의 주요 원인인 직무스트레스에 관하여 고찰하고 해상교통관제 분야의 인적요인 연구에 필요한 기초자료로 삼고자 한다.

• 한국과학교육학회지
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• 제32권6호
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• pp.1063-1071
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• 2012

The purpose of this study is to investigate the relation between the classification ability quotient and cortisol-hormonal change of middle school students. Thirty-three students, second graders in middle school, performed the classification task that can be an indicator of students' classification ability. And then amount of the secreted hormone was analyzed during task performance. The study results were as follows: First, the classification methods of students mostly utilized visual, qualitative. Their classification patterns for each subject were static, partial, and non-comparative. Second, the amount of stress-hormone was secreted from students during the experiment decreased in overall after the free classification. It seemed that student-centered activity relieved stress. Third, the classification ability quotient turned out to be significantly correlated to the stress hormone, which means that there was a close relationship between classification ability and stress level. It was also considered that stress had a positive effect on the improvement of classification ability. This study provided physiologically more accurate information on the stress increased in the learning process than other conventional studies based on reports or interviews. Finally, researchers could recognize the effect of stress in the cognitive activity and the need to find an appropriate level of stress in learning processes.

• 동의신경정신과학회지
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• 제18권3호
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• pp.113-122
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• 2007

The purpose of this study was to evaluate the effects of mental stress measured with heart rate variability(HRV) in healthy adults and to evaluate the effects of laserneedle acupuncture therapy in healthy adults. Methods : 25 healthy volunteers participated in this study. The volunteers were divided randomly, the real laserneedle acupuncture therapy group or the sham laserneedle acupuncture therapy group. First, After 5 minute rest, mental stress was given with stroop color word task and calculation task. And then laserneedle acupuncture therapy or sham laserneedle therapy was done on HT8(少府) for 15 minute. HRV was recorded in 3 period-before stress, after stress, and after laserneedle or sham acupuncture therapy. Results : LF was significantly increased after mental stress. And there was no significant difference between the real laserneedle acupuncture therapy group and the sham laserneedle acupuncture therapy group. Conclusions : This results show that mental stress-stroop color word test and calculation test for 10 minute- contribute to activation of the sympathetic nervous system.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 1999년도 추계학술대회 논문집
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• pp.216-221
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• 1999

A mental task combined with noise background is an effective model of laboratory stress for study of psychophysiology of the autonomic nervous system (ANS). The intensity of the background noise significantly affects both a subjective evaluation of experienced stress level during test and the physiological responses associated with mental load in noisy environments. Providing tests of similar difficulties we manipulated the background noise intensity as a main factor influencing a psychophysiological outcome and the analyzed reactivity along withe the noise intensity dimension. The goal of this study was to identify the patterns of ANS responses and the relevant subjective stress scores during performance of word recognition tasks on the background of white noise (WN) of the different intensities (55, 70 and 85 dB). Subjects were 27 college students (19-24 years old). BIOPAC, Grass Neurodata System and AcqKnowlwdge 3.5 software were used to record ECG, PPG, SCL, skin temperature, and respiration. Experimental manipulations were effective in producing subjective and physiological responses usually associated with stress. The results suggested that the following potential autonomic mechanisms might be involved in the mediation of the observed physiological responses: A sympathetic activation with parasympathetic withdrawal during mild 55 and 70dB noise (featured by similar profiles) and simultaneous activation of sympathetic and parasympathetic systems during intense 85dB WN. The parasympathetic activation in this case might be a compensatory effect directed to prevent sympathetic domination and to maintain optimal arousal state for the successful performance on mental stress task. It should be mentioned that obtained results partially support Gellhorn's (1960; 1970) "tuning phenomenon" as a possible mechanism underlying stress response.