• 한국컴퓨터정보학회논문지
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• 제13권5호
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• pp.291-308
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• 2008

본 연구는 고객과 직접적인 대면을 하지 알고 전화를 이용하여 감정노동(emotional labor)을 수행하는 콜센터 상담원들의 감정노동의 결과로 표출되는 감정소진(emotional exhaustion)에 영향을 주는 요인을 연구하였다. 본 연구는 감정소진이 직무만족을 저해시켜 이직의도를 높이는 것으로 이직율이 높은 콜센터 경영에서 관리하여야할 중요한 요소라는 것에 대한 실증적인 증거를 제시하였다. 감정소진을 낮추기 위해서는 시간적 압력을 낮추고 업무의 자율성을 부여하여야 하며, 이직의도를 낮추는 위해서는 상사지원이 중요한 요소로 나타났다. 본 연구의 의의는 콜센터 경영에 있어서 감정노동이 상담원의 관리에 중요하다는 것을 제시하였다는 것이다.

• 한국지리정보학회지
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• 제8권2호
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• pp.103-116
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• 2005

최근 GIS를 이용한 관망 DB화가 빈번히 이루어지고 있으나 관망해석 모형과의 연계는 미흡한 실정이다. 그 주된 이유는 이들 DB가 관망해석 모형에서 요구하는 전문적인 공간정보의 작성에 어려움이 있기 때문이다. 그로 인해, 배수관망도의 작성과 이의 정확도 향상을 위하여 공간자료를 구축할 수 있는 GIS 기법 적용이 요구되고 있다. 본 연구에서는 배수관망 수리해석 모형구축에 필요한 제반 공간자료를 GIS를 이용하여 손쉽게 작성할 수 있는 방법을 제시하였다. 또한, 관망해석모형의 계산결과를 활용하여 상수관로 위치의 공간적인 적정성(노후도 분석, 표고별 수압분포, 수용가 관리를 위한 유량공급의 분석 등)을 판단할 수 있도록 하였다.

• 터널과지하공간
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• 제28권2호
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• pp.125-141
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• 2018

장기적 광산 개발계획을 위하여 광산의 갱도설계는 장비계획, 운반계획, 운영계획 등의 기본이 되므로 매우 중요하다. ${\bigcirc}{\bigcirc}$광산은 생산성 향상에 중점을 둔 갱도설계가 이루어짐으로써 채광계획 변경이 매우 어렵고, 굴착갱도를 유지하기 위한 많은 노력이 필요하였다. 본 연구에서는 암반의 역학적 특성을 고려한 최적갱도를 설계하고 지보계획을 수립하고자 하였다. 이를 위하여 암반의 역학적 변수(팽윤압력, 변형계수, 지압계수)들에 대한 추정, 다양한 현장조사와 분석 등을 수행하였다. 그 결과 roof bolt 등을 활용하여 갱도유지를 하려면 갱도단면 축소 등을 고려할 필요가 있었으며, 현 갱도규격을 유지하기 위해서는 지보재와 지보방법에 대한 다양한 기능적 기술들이 필요할 것으로 분석되었다.

• 유통과학연구
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• 제20권2호
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• pp.65-77
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• 2022

Purpose: This study aims to identify factors affecting the adoption of e-commerce by household businesses in Vietnam's food and beverage industry. Research design, data and methodology: The integrated TAM and TOE frameworks and ten hypotheses were developed to test the relationship between relevant factors. A cross-sectional survey was conducted to collect valid data from 992 respondents who run F&B household businesses in Vietnam. Results: The empirical research results confirm all proposed hypotheses that e-commerce adoption is affected by the perceived usefulness, the perceived ease of use, vendor support partners, social expectancy, competitive pressure, subjective norm, and household resources. Meanwhile, technical readiness, environment readiness, and organization readiness are intermediate variables that influence the implementation of e-commerce in food and beverage distribution. Conclusions: The findings suggest effective orientations to foster the food and beverage e-trading practice for household businesses in developing countries. Accordingly, to encourage private household businesses to adopt e-commerce, it is necessary to focus on improving business resources, technology readiness, environment readiness, and organization readiness through raising awareness of usefulness, benefits, perceived ease of use, and increased support of vendor partners. Future research can focus on improving the efficiency of e-commerce applications in F&B distribution for both household businesses and larger-scale enterprises.

• Nuclear Engineering and Technology
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• 제54권5호
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• pp.1914-1928
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• 2022

To improve the heat transfer efficiency of the reactor fuel assembly, it is necessary to accurately calculate the two-phase flow boiling characteristics and the critical heat flux (CHF) in the fuel assembly. In this paper, a Eulerian two-fluid model combined with the extended wall boiling model was used to numerically simulate the 5 × 5 fuel rod bundle with spacer grids (four sets of mixing vane grids and four sets of simple support grids without mixing vanes). We calculated and analyzed 11 experimental conditions under different pressure, inlet temperature, and mass flux. After comparing the CHF and the location of departure from the nucleate boiling obtained by the numerical simulation with the experimental results, we confirmed the reliability of computational fluid dynamic analysis for the prediction of the CHF of the rod bundle and the boiling characteristics of the two-phase flow. Subsequently, we analyzed the influence of the spacer grid and mixing vanes on the void fraction, liquid temperature, and secondary flow distribution. The research in this article provides theoretical support for the design of fuel assemblies.

• 로봇학회논문지
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• 제18권4호
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• pp.392-402
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• 2023

The purpose of this study was to conduct an exploratory and descriptive survey study design to examine 1) the physical difficulty by care task, 2) overall occupation-related physical burden by the characteristics of caregivers and care receivers, and 3) the level of help by the use of care robots and devices among formal caregivers working in facilities for older adults. In this study, 308 formal caregivers working in facilities were recruited from 8 nursing homes and 5 geriatric hospitals between Aug. 2021 and Sept. 2022 in South Korea. There were significant differences in ADLs between nursing homes and geriatric hospitals: eating, dressing, hygiene, transfer to bed, transfer to the toilet and walking. For each care item, the items the caregivers had the most difficulty ranked first were bathing, excretion assistance, and mobility support. The difference in occupation-related physical burden according to general characteristics was found to have statistically significant differences in female and bad perceived health. Among the 205 caregivers who had experience using care robots and devices, pressure ulcer prevention was the most experienced one, and those also were the most helpful and exercise aids were the least helpful. In order to reduce the physical burden on care providers, it is necessary to develop and introduce a care robots centered on the care site. Furthermore, national level public support systems are required to enable facilities to actively utilize care robots and devices.

• 한국정보시스템학회지:정보시스템연구
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• 제22권4호
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• pp.23-48
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• 2013

This study shows that a sustainable competitive advantage and entrepreneurial characteristics are necessary for a software company to achieve competitive innovation and growth. This study investigates various software company characteristics and the effects of various company factors as its main research objectives. The data used in this research model were collected from software companies in South Korea. A total of 211 questionnaires were collected over a period of two months in 2013. EXCEL, AMOS, and SPSS were used to derive the study results. The hypothesis testing results of this study are as follows. First, a software company's entrepreneurial innovativeness and risk-taking behaviors have a positive influence on software innovativeness. A greater sense of innovativeness and entrepreneurial orientation leads to a higher propensity to take risks in software development. Second, the characteristics of software innovativeness, and flexibility have a significant influence on software company performance. Innovation during the initial periods of software usage can create a high demand for improvements and new features, requiring a flexible software design. Finally, this study analyzes the software features of entrepreneurial characteristics and the influence of institutional factors on the characteristics of individual innovativeness and software development. Entrepreneurial characteristics can affect governmental or institutional support, policies, and legal frameworks to promote the role of software innovativeness. The results of this study imply that software companies can adopt an entrepreneurial approach to promote technology development and product development for achieving a competitive advantage in the industry. This study also analyzes the environmental factors that affect the software industry and their implications for policy makers.

• 한국의류학회지
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• 제39권1호
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• pp.63-76
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• 2015

This study conducted a survey to gauge the buying and wearing propensities of wearers of leg guards made for baseball catchers, as well as product characteristics of preferred leg guards. Data from the survey were analyzed to obtain basic data for the development of an advanced leg guard design. Degree of compression, horizontal distance, cross section view and outline 3D sketch were also analyzed from the 3D data of leg guards; in addition, mobility and kinematic analysis were conducted through a wearing test. The survey indicated that imported products dominate the current retail market because they are appreciated by customers in terms of fit, price, brand, and protection. Representative complaints of products were discomfort, pressure, and the heavy-weight of the leg guards in general attributed to overall structure and 3D shape. When the pressure was lower on the front area of knee, it feels better to wear and the average knee angular velocity during the up and down motion increased, which suggests a better design from a kinematic point of view. The knee is the primary part of the body responsible for any movement of the lower limbs; consequently, the degree of compression and support stability of the leg guards near the knee area are important factors to evaluate the performance of leg guards. The results of our study indicate significant opportunities for improvement in product design and the development of baseball leg guards along with an ergonomic design that considers the mobility of the knee, skin deformations is necessary to improve performance. The process followed in this study will be applicable to studies on other personal protective equipment for sports.

• 한국세라믹학회지
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• 제48권3호
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• pp.236-240
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• 2011

In order to deposit a homogeneous and uniform ${\beta}$-SiC films by chemical vapor deposition, we demonstrated the phase stability of ${\beta}$-SiC over graphite and silicon via computational thermodynamic calculation considering pressure, temperature and gas composition as variables. The ${\beta}$-SiC predominant region over other solid phases like carbon and silicon was changed gradually and consistently with temperature and pressure. Practically these maps provide necessary conditions for homogeneous ${\beta}$-SiC deposition of single phase. With the thermodynamic analyses, the CVD apparatus for uniform coating was modeled and simulated with computational fluid dynamics to obtain temperature and flow distribution in the CVD chamber. It gave an inspiration for the uniform temperature distribution and low local flow velocity over the deposition chamber. These calculation and model simulation could provide milestones for improving the thickness uniformity and phase homogeneity.

• 한국의류산업학회지
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• 제21권3호
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• pp.336-345
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• 2019

This study evaluated the preference and wearing characteristics of existing fitness compression wear for elderly women and identified the problems and improvements of existing fitness apparel. Preference and wearing characteristics for 6 types (A-F) of upper and lower fitness compression wear were evaluated. Photos and drawings as well as the preferred designs and details were investigated after presenting the evaluation clothing. Evaluations were made on a 5 point Likert scale for the fitness, allowance, pressure, ease of movement, fabric material, and overall satisfaction after wearing. The design preference indicated that B type (26.6%) and C type (23.4%) were preferred in the top with C, E and F type preferred to the same ratio of 19.4% in the slacks. The fitness and allowance amount of the top B type were the most appropriate (${\geq}4$), the C type was in close contact (2.86), and the F type was inadequate in the neck circumference (1.77). The feeling of pressure was high in the waist, abdomen, thighs, and knees. The area where the elderly people want to improve their strength was the legs; in addition, a pattern design was needed to strengthen leg muscles when designing fitness compression wear. However, a design with excessive adhesion due to a muscle support band was shown to be not preferred. Therefore, depending on the activity, it is necessary to develop a fitness compression wear that applies an optimum stretching ratio of fabric based on body surface area changes.