• Nuclear Engineering and Technology
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• v.48 no.1
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• pp.153-163
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• 2016

Environments in nuclear power plants (NPPs) are changing as the design of instrumentation and control systems for NPPs is rapidly moving toward fully digital instrumentation and control, and modern computer techniques are gradually introduced into main control rooms (MCRs). Within the context of these environmental changes, the level of performance of operators in a digital MCR is a major concern. Situation awareness (SA), which is used within human factors research to explain to what extent operators of safety-critical systems know what is transpiring in the system and the environment, is considered a prerequisite factor to guarantee the safe operation of NPPs. However, the safe operation of NPPs can be guaranteed through a team effort. In this regard, the operating team's SA in a conventional and digital MCR should be measured in order to assess whether the new design features implemented in a digital MCR affect this parameter. This paper explains the team SA measurement method used in this study and the results of applying this measurement method to operating teams in different MCR environments. The paper also discusses several empirical lessons learned from the results.

• Korean Journal of Adult Nursing
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• v.28 no.4
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• pp.355-366
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• 2016

Purpose: The purpose of study was to describe operation room nurses' ethical values in relationship to the attitude and meaning of life toward organ transplantation in brain death. Methods: This study used a descriptive correlational survey design. Participants were 174 nurses who had attended to organ transplantation surgery in brain death more than once. Data were collected from September 1 to 11, 2015 and were analyzed using independent t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficients, and hierarchical multiple regression with SPSS 22.0. Results: Educational level, attitude on organ transplantation in brain death, and meaning of life were significant variables predicting the level of nursing ethical value, accounting for 82.6% of the variability. Conclusion: Continued education and self-development programs should be encouraged for operating room nurses to establish professional nursing ethics as well as positive meaning of life and attitude toward the organ transplantation in brain death.

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.1
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• pp.63-71
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• 2020

Purpose : The purpose of this study is to analyze the elements that affect the energy consumption of general hospitals in Korea. Methods : Factors affecting energy consumption in general hospitals include facility elements and operating elements. The effects of these elements on energy consumption of general hospitals were analyzed by statistical methods such as t-test, anova, correlation analysis, and regression analysis. Results : Total floor area, number of operating rooms, number of MRI, number of staffs, and number of outpatients can be said as useful variables that can explain energy consumption in general hospitals. Implication : It is possible to save energy consumption in general hospitals by adjusting major variables that affect the energy consumption of general hospitals.

• Journal of the Korean Burn Society
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• v.22 no.2
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• pp.34-37
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• 2019

Fires in operating rooms rarely occur. However, this type of disaster can complicate almost any surgical procedure. Fuel, heat and oxygen are related with fire outbreak. When ignition sources such as alcohol-based surgical preparation solutions are present, the risk of an operating room fire increases, and burns are more severe in such conditions. Many manufacturers recommend waiting at least three minutes after application to allow complete drying for reduce fire risk. There are a few studies regarding flame burns in the operation room, although most of these studies are related to preoperative skin preparation. However, alcohol containing solutions can be used occasionally for cleansing of the operation field after the surgery, therefore, the surgical team should pay attention to surgical fires, even if they have completed the operation successfully. We present our case of a post-operative flame burn and introduce some precautions that will reduce the risk of alcohol burns.

• Nuclear Engineering and Technology
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• v.41 no.3
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• pp.225-236
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• 2009

This study has identified human performance research issues associated with the implementation of new technology in nuclear power plants (NPPs). To identify the research issues, current industry developments and trends were evaluated in the areas of reactor technology, instrumentation and control technology, human-system integration technology, and human factors engineering (HFE) methods and tools. The issues were prioritized into four categories based on evaluations provided by 14 independent subject matter experts representing vendors, utilities, research organizations and regulators. Twenty issues were categorized into the top priority category. The study also identifies the priority of each issue and the rationale for those in the top priority category. The top priority issues were then organized into research program areas of: New Concepts of Operation using Multi-agent Teams, Human-system Interface Design, Complexity Issues in Advanced Systems, Operating Experience of New and Modernized Plants, and HFE Methods and Tools. The results can serve as input to the development of a long-term strategy and plan for addressing human performance in these areas to support the safe operation of new NPPs.

• International Journal of Air-Conditioning and Refrigeration
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• v.6
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• pp.136-147
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• 1998

An experimental facility consisting of two 3$\times$4.4$\times$2.8m rooms identical in construction is built. Each room has a control system and storage tank supplying hot water to the radiant floor heating system. The facility enables simultaneous comparison of two different control strategies each implemented in a separate room. The operating performance of three kinds of flow control scheme is tested and compared in this study: (ⅰ) conventional on-off control based on feedback from room air temperature (ⅱ) TPSC(two parameter switching control )(ⅲ) TPOC(two parameter on-off control). Results show that TPSC and TPOC using room air and surface temperature sequentially as feedback signal to control hot water supply is the better temperature regulation scheme than conventional control based on feedback from only room air temperature. They are good candidates for the room with radiant floor heating system under continuous and intermittent heating mode.

• Journal of The Korea Institute of Healthcare Architecture
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• v.13 no.3
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• pp.35-46
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• 2007

Hospital architectures, as a function-oriented architecture, have a great influences on the functional program and spacial allocation for a great number of rooms and departments. Particularly, spacial allocating analysis is depends on various external forces, such as hospital-size, relationships for the others, ownerships, operating methods, long-term masterplan as well as researchers' methods. Furthermore, as there is focusing on architectural design basis rather than architectural planning In recent Korean architectural field, adequate analysing methodology of spacial allocation for the design process is needed. This paper analyzes architectural drawings for 8 Korean hospitals which constructed in recent 20 years in aspects of the spacial allocation for inner spaces and then, presents areal composition and pattern of spacial allocation for researching hospitals.

• Journal of Korean Institute of Industrial Engineers
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• v.26 no.1
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• pp.54-65
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• 2000

The objective of this study is to evaluate the operator performance relating to hand switches with two or three buttons in the main control rooms of nuclear power plants. Based on the comparative analysis of the nuclear power plants, two different subjective workload-rating scales were used to evaluate the performance of 48 operators: the Overall Workload(OW) and National Aeronautics and Space Administration Task Load Index (NASA TLX). The survey questions consisting of the eight-items were asked to evaluate the operating experiences for the two different switch types. The OW scales ratings were applied to measure the workload of the switch-related tasks. The ratings revealed that signal detection tasks caused less workload in the three-buttoned-switch operators than the other switch group. However, in the switch operation tasks, the switch types did not show statistically significant effects on workload level. The NASA TLX scale ratings were performed based on detailed task scenarios that assumed the accident of small break loss of coolant, what we call, the small LOCH. The NASA TLX was administered to three different task groups: the reactor, the turbine, and the electric operator groups. Based on the NASA TLX, the two-buttoned switch groups showed higher workload than those with the three-buttoned switches. However, a statistically significant difference was found only in the reactor operator groups. When the current switch type was assumed to be changed for the other type, all of the three-buttoned switch groups were predicted to have higher workload than the other switch groups, respectively. The implications of these findings were discussed.

• Journal of the Korean Solar Energy Society
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• v.28 no.5
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• pp.14-20
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• 2008

As the number of buildings that use the transparent permeation materials as the outer wall is on the increase, the coming amount of the light rays is a lot, and thus the increase in the cooling load and the radiant heat of high temperature may cause the residents to discomfort. In order to reduce such influences, this paper analyzed the installation effects of the sunshade BIPV. The inner temperature of the room installed the sunshade BIPV or otherwise was measured, and compared and analyzed the effects of reducing the cooling load by the incoming light rays. The sample space of the third floor of S university installed the sunshade BIPV has two rooms on the same conditions, and for five sunny days selected in August, the researcher measured the air temperature and the temperature of the fittings with closing the windows to minimize the movement of air without operating the coolers. The maximum cooling load measured by the incoming light rays in the room where the sunshade BIPV was not installed was examined as 459.13kcal/h. It can be understood as the effect of reducing the cooling load according to the incoming rays of the room with sunshade BIPV. Even though the effect of cooling load reduction is not so great in a room, the total reduction in cooling room for the 32 rooms installed the sunshade BIPV was estimated to be 40442.27kcal/day, which will be able to bring the maximum reduction effect of 17.1kW in energy and reduce the investment cost owing to the reduction in cooling load when initially designing the building.

• The Journal of the Korea Contents Association
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• v.18 no.12
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• pp.75-91
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• 2018

As more and more males are participating in the female dominated nursing profession in Korea, they are facing a number of discriminations such as department assignment on the job because of male gender stereotype. The purpose of this study is to examine hospital workers's gender role identity, gender stereotype, and the relationship between those attitudes and gender prejudice against male nurses. The results showed that the androgynous group had lower gender stereotypes and lower prejudice against male nurses than those of the other groups. Hospital workers had a strong tendency to believe that male nurses should work mainly in special departments such as emergency rooms, intensive care units, operating rooms and they think that the male nurses are not fit for caring patients because of the patients' unfamiliarity with male nurses. Gender stereotypes were positively correlated to prejudice against male nurses. Therefore, hospitals should consider developing a detailed plan to encourage a culture of gender equality by tackling the existing prejudice against male nurses so that male nurses can get the same opportunities as female counterparts in terms of department assignment and job promotion.