• 임상간호연구
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• 제23권2호
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• pp.222-235
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• 2017

Purpose: The purpose of this study was to investigate the reality, status of clinical nurses' emotional labor and the relationship with physical discomfort, burnout, depression and social support. Methods: A thousand three hundred sixteen clinical nurses from 42 hospitals nationwide participated in this study. Questionnaires were developed for evaluating the reality and status of emotional labor of clinical nurses after interviewing focus groups and reviewing literatures. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient. Results: Ninety eight percent of nurses had answered having emotional labor and they experienced 82 times per year, 9.6 times during last a month which means they experience it every other day. The one who provoke emotional labor were patients, guardians, physicians, supervisor, and colleagues in sequence. Eighty percent of nurses had intention to leave their jobs after experiencing emotional labor. They were doing more surface acting than deep acting of emotional labor. Conclusion: Clinical nurses in Korea experienced excessively high level of emotional labor and delayed responding to clients' requests due to lack of time for caring each patient was revealed as one of the main causes of emotional labor.

• 한국콘텐츠학회논문지
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• 제19권9호
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• pp.293-307
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• 2019

현재 사회복지서비스에 대한 지속적인 욕구증가와는 반비례로 사회복지사의 열악한 복지수준은 큰 사회적 문제이다. 특히 사회복지사의 감정노동은 심각한 실정이다. 본 연구는 사례관리 사회복지사의 감정노동이 고객지향성에 미치는 영향을 규명하였다. 또한 구성원들의 감성지능과 리더-구성원 교환관계의 조절효과를 실증분석 하였다. 주요 분석결과는 다음과 같다. 첫째, 감정노동의 표면행위는 고객지향성에 부정적인 영향을 주었고, 내면행위는 긍정적인 영향을 주었다. 둘째, 감성지능은 감정노동의 표면행위와 고객지향성의 관계에서 조절효과를 나타냈다. 또한 감성지능은 표면행위가 고객지향성에 미치는 부정적 영향을 약화시키는 조절효과를 가지고 있었다. 셋째, 리더-구성원 교환관계는 감정노동의 내면행위와 고객지향성의 관계에서 조절효과를 나타냈다. 또한 리더-구성원 교환관계는 내면행위가 고객지향성에 미치는 긍정적 영향을 강화시키는 조절효과를 가지고 있었다. 이러한 연구결과를 바탕으로 논의가 제시되었으며, 향후 연구를 위한 제언도 제시하였다.

• 한국산학기술학회논문지
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• 제18권9호
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• pp.136-145
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• 2017

본 연구는 응급실 간호사가 경험하는 감정노동을 직원중심 감정노동과 직무중심 감정노동으로 구분하여 감성리더십과 소진의 관계를 파악하기 위해 시도된 서술적 조사연구이다. 연구대상은 종합병원에서 근무하며 연구참여에 동의한 총 168명의 응급실 간호사이다. 자료는 직원중심 감정노동, 직무중심 감정노동, 감성리더십 및 소진을 구조화된 설문지를 이용하여 조사하였으며 수집된 자료는 실수와 백분율, 평균과 표준편차, t-test, ANOVA, 및 Pearson 상관계수로 분석하였다. 연구결과에서 응급실 간호사의 직원중심 감정노동은 표면행위 평균 3.51점, 진심행위 3.26점이었고, 직무중심 감정노동은 감정표현 빈도 평균 3.73점, 감정표현 지속시간 3.36점, 감정표현 다양성 3.46점이었다. 감성리더십 평균은 3.57점이었고, 소진 중 정서적 소모의 평균은 4.59점, 비인격화 4.13점, 개인성취감 감소 3.60점이었다. 직무중심 감정노동 점수가 직원중심 감정노동 점수보다 높았으며, 직원중심 감정노동 중 표면행위를, 직무중심 감정노동에서는 감정표현 빈도를 가장 많이 수행하였다. 직원중심 감정노동과 소진과의 관계에서 표면행위는 정서적 고갈(r=.27, p<.001)과 비인격화(r=.40, p<.001)에 유의한 양의 상관관계를, 진심행위는 개인 성취감 감소(r=-.36, p<.001)와 음의 상관관계가 있었다. 직무중심 감정노동 중 감정표현 빈도(r=.21, p=.005), 지속시간(r=.16, p=.037), 다양성(r=.15, p=.046) 모두 정서적 고갈과 양의 상관관계가 있었으며, 감정표현 지속시간은 비인격화(r=.30, p<.001)와 양의 상관관계를, 감성리더십은 표면행위(r=.18, p=.020), 진심행위(r=.33, p<.001), 그리고 감정표현 지속시간(r=.23, p=.003)과 양의 상관관계를 보였다. 본 연구결과를 근거로 하여 응급실 간호사의 감정노동 및 소진을 효과적으로 관리할 수 있는 전략 개발 노력이 필요하리라 생각된다.

• Geomechanics and Engineering
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• 제15권5호
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• pp.1061-1070
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• 2018

The main purpose of retaining wall methods for deep excavation is to keep the construction site safe from the earth pressure acting on the backfill during the construction period. Currently used retaining wall methods include the common strut method, anchor method, slurry wall method, and raker method. However, these methods have drawbacks such as reduced workspace and intrusion into private property, and thus, efforts are being made to improve them. The most advanced retaining wall method is the prestressed wale system, so far, in which a load corresponding to the earth pressure is applied to the wale by using the tension of a prestressed (PS) strand wire. This system affords advantages such as providing sufficient workspace by lengthening the strut interval and minimizing intrusion into private properties adjacent to the site. However, this system cannot control the tension of the PS strand wire, and thus, it cannot actively cope with changes in the earth pressure due to excavation. This study conducts a preliminary numerical analysis of the field applicability of the controllable prestressed wale system (CPWS) which can adjust the tension of the PS strand wire. For the analysis, back analysis was conducted through two-dimensional (2D) and three-dimensional (3D) numerical analyses based on the field measurement data of the typical strut method, and then, the field applicability of CPWS was examined by comparing the lateral deflection of the wall and adjacent ground surface settlements under the same conditions. In addition, the displacement and settlement of the wall were predicted through numerical analysis while the prestress force of CPWS was varied, and the structural stability was analysed through load tests on model specimens.

• Journal of Advanced Marine Engineering and Technology
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• 제31권6호
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• pp.753-760
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• 2007

For protection of the cylinder wall of the ball mill for grinding raw ore. the inner side of the cylinder is covered with rubber liner. The rubber is easily worn down because the rubber relatively soft compared with raw ore. So the rubber liner in the ball mill cylinder must be replaced almost every year and the cost for replacing rubber liner formidable. In this paper, for reducing or excluding the cost of replacing rubber liner the basalt liner is designed. The basalt materials are generally harder than raw ore and the basalt liner in the ball mill does not wear down and so it can be used almost permanently. The concave surfaces are made on the liner of the ball mill and the liner in the cylinder wall plays also the role of raising the steel balls mixed in the raw ore. The section profiles of the concave surface have an important effect on the performance of the ball mill. The deep concave grooves raise the steel balls to high levels and give the large potential energy to the steel balls impacting to the raw ore. But if the concave grooves are too deep. the steel balls raised too high by the concave grooves fly along the parabolic path and reach to the other side of cylinder wall and so the steel balls do not play the roles of grinding the raw ore. The forces acting to a steel ball in a concave groove of the cylinder liner are also analyzed in this paper. The formulas calculating the height and the impact point of the steel ball are introduced and presented. Based to these formulas, the optimum section profiles of the basalt liner are presented.

• 한국해안해양공학회지
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• 제12권4호
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• pp.157-167
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• 2000

한국해양연구소는 1998년에 이어도 종합해양과학기지의 기본설계를 수행한 바 있으며 심해 설계파에 Morison 식과 Stream function 이론을 적용하여 설계파력을 결정한 바 있다. 본 연구에서는 삼차원 수리모형실험 통하여 이어도 해역에서의 파랑전파를 모의하였으며, 구조물의 파력 및 Air gap를 계측하고 이들을 SACS 프로그램의 계산치와 비교함으로써 기본설계 값들의 타당성을 검토하였다. 그 결과, 시도된 4개의 심해파향 중에서 SSW, S, SE계열의 파향에 대해서는 계측치가 SACS 계산치 보다 작게 나타났다. 그러나, 유일하게 구조물에 미치기 전에 쇄파되는 NNW계열의 파향에서는 전반적으로 SACS 계산치를 상회하였으며, 그방향성 흐름과 파가 복합되어 있는 경우와 매우 유사한 파력변화를 보여주었다. 구조물의 Air gap은 모든 심해파향에 대하여 계측치가 기본설계치보다 작은 것으로 나타났다.

• 대한조선학회지
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• 제20권4호
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• pp.33-40
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• 1983

The drift force acting on a freely-floating sphere in water of finite depth is studied within the framework of a linear potential theory. A velocity potential describing fluid motion is determined by distribution pulsating sources and dipoles on the immersed surface of the sphere. Upon knowing values of the potential, hydrodynamic forces are evaluated by integrating pressures over the immersed surface of the sphere. The motion response of the sphere in water of finite depth is obtained by solving the equation of motion. From these results, the drift force on the sphere is evaluated by the momentum theorem, in which a far-field velocity potential is utilized in forms of Kochin function. The drift force coefficient Cdr of a fixed sphere increases monotononically with non-dimensional wave frequency ${\sigma}a$. On the other hand, in freely-floating case, the Cdr has a peak value at ${\sigma}a$ of heave resonance. The magnitude of the drift force coefficient Cdr in the case of finite depth is different form that for deep water, but the general tendency seems to be similar in both cases. It is to note that Cdr is greater than 1.0 when non-dimensional water depth d/a is 1.5 in the case of freely-floating sphere.

• 한국해양공학회지
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• 제28권1호
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• pp.47-54
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• 2014

When an anchor penetrates and is installed under a seabed, a portion of the mooring line connected to the anchor is also embedded under the seabed. This embedded mooring line affects the capacity of the anchor in two ways. First, the frictional resistance that occurs between the mooring line and the seabed reduces the pulling force acting on the anchor. Second, the embedded part of the mooring line forms a reverse catenary shape due to the bearing resistance of the soil, so that an inclined pulling force is applied to the anchor. To evaluate the mooring line's effect on the capacity of an anchor in sand, centrifuge model tests were performed using two relative sand densities of 76% and 51% while changing the anchor depths. The test results showed that the load is reduced much more in deep and dense sand, and the inclination angle of the load is lower in shallow and loose sand.

• 한국항해학회지
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• 제24권3호
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• pp.123-132
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• 2000

In order to improve the ship maneuverability, It is important to estimate precisely the hydrodynamic coefficients of added mass forces acting on a ship especially in shallow waters, and simple methods for predicting such hydrodynamic forces Is also very desirable. In the previous paper using 3-Dimension potential flow theory, it has been demonstrated that potential calculation is available to estimate added mass coefficients. The present work is aimed at the suggestion of the simplified formulas for predicting the translation and lateral motion of added mass coefficients in shallow water. So, 3-D potential flow theory is also used to calculate the added mass coefficients in deep and shallow waters for Series 60 model which has 5 different kinds of block coefficients (0.6-0.8), SR196 model and T/S HANNARA. After some series computation, simplified formulas for Predicting the added mass force in shallow waters is suggested based on the computation results of Series 60 model. The formulas consist of the combination of principal dimensions and the water depth; d/B, Cb, d/H. The predicted results are compared with the Computation results for SR196 model and T/S HANNARA. The precision of predicted results by simplified formulas are good enough for the practical use. (d/B : draft-Breadth ratio, d/H draft-Water depth ratio, Cb : Block coefficients).

• 한국병원경영학회지
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• 제23권3호
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• pp.39-51
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• 2018

The purpose of this study is to find out the relationship among self-efficacy, emotional labor, organizational commitment and job satisfaction of medical tourism employees. This survey was conducted from March 2 to March 31, 2018 and targeting medical tourism employees who work at hospitals, travel agencies, medical tourism agencies and consulting firms in Seoul. 282 questionnaires were analyzed using SPSS 12.0 and AMOS 18.0. The result of this study is as follows. First, self-efficacy positively influenced on emotional labor and organizational commitment. Second, self-efficacy positively influenced on all job satisfaction factors as like job itself satisfaction, salary/promotion satisfaction and relationship satisfaction. Third, deep acting factor of emotional labor positively influenced on job itself satisfaction and relationship satisfaction. Forth, job itself satisfaction and relationship satisfaction positively influenced on organizational commitment. These research findings can be summarized as follows. Medical tourism employees of hospitals, travel agencies, medical tourism agencies and consulting firms have to be supported greatly to improve their own job competency and job qualifications. Second, medical tourism organizations try to understand the real emotion of medical tourism employees when they are dealing with medical tourists. Third, medical tourism employees have to be recognized their job performance and provided suitable incentives for the results. The findings of this study provide practical implications about strategical human resource management of medical tourism agencies. Moreover, it will be useful for hospitals and government officials to establish a management framework in medical tourism industry.