• 대한인간공학회지
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• 제22권1호
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• pp.31-42
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• 2003

This study describes a modification of the technique for human error analysis in nuclear power plants (NPPs) which adopts advanced Man-Machine Interface (MMI) features based on computerized working environment, such as LCOs. Flat Panels. Large Wall Board, and computerized procedures. Firstly, the state of the art on human error analysis methods and efforts were briefly reviewed. Human error analysis method applied to NPP design has been THERP and ASEP mainly utilizing Swain's HRA handbook, which has not been facilitated enough to put the varied characteristics of MMI into HRA process. The basic concepts on human errors and the system safety approach were revisited, and adopted the process of FMEA with the new definition of Error Segment (ESJ. A modified human error analysis process was suggested. Then, the suggested method was applied to the failure of manual pump actuation through LCD touch screen in loss of feed water event in order to verify the applicability of the proposed method in practices. The example showed that the method become more facilitated to consider the concerns of the introduction of advanced MMI devices, and to integrate human error analysis process not only into HRA/PRA but also into the MMI and interface design. Finally, the possible extensions and further efforts required to obtain the applicability of the suggested method were discussed.

• 한국의류학회지
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• 제40권1호
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• pp.188-201
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• 2016

A Clothing Department is a major fields of specialized vocational high schools. Specialized high schools with clothing related departments are located in Seoul (4 schools), Busan (2), Incheon (3), Daejeon (1), Ulsan (1), Kangwondo (1), Kyungkido (1), Kyungsangbukdo (1) and Chungcheongbukdo (1). In these 15 specialized high schools, 92 classes of clothing departments are run by 72 clothing teachers with 2,459 students enrolled. The range of object of this study is 15 clothing related departments of specialized high schools and their titles are department of Fashion Design, Clothing Design, Clothing Art, Multi Fashion Design, Fashion Textile Design, and Global Design. They were investigated by literature from previous research and education statistics from the Korean Educational Development Institute (KEDI). Websites such as 'School Information', 'portal site of Specialized High School', 'Ministry of Education-Education Statistics and Information' were also searched. The homepages of specialized high schools with clothing department were also investigated respectively. In this study, current scale, employment rate of graduates, major courses, scale of teachers of clothing major of clothing department of specialized high school were analyzed. In 2015, employment rate and college enrollment rate of vocational high schools were 46.6% and 36.6% respectively, whereas employment rate and college enrollment rate of clothing departments four specialized High Schools were 39.9% and 45.8% respectively. The number of major courses of clothing departments are 12-15, and the main subjects of the curriculum were Fashion Design, Construction of Western Clothing, Construction of Korean Clothing, Textile Materials and Mangement and Computer Graphics. Major courses consist of 90-108 weekly lesson-hours for 6 semesters. Thanks to government projects to encourage specialized high schools, the educational environment has improved in areas of practice room equipment, industry connections, field training, internship, and scholarship funds. However, despite government projects to encourage education at specialized high schools, there is a need for a more flexible education system to enhance student creativity at specialized high schools.

• 한국미생물·생명공학회지
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• 제49권1호
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• pp.45-56
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• 2021

Improved amylases were developed from protoplast fusants of two amylase-producing Aspergillus species. Twenty regenerated fusants were screened for amylase production using Remazol Brilliant Blue agar. Crude enzyme extracts produced by solid state fermentation of rice bran were assayed for activity. Three variable factors (temperature, pH and enzyme type) were optimized to increase the amylase activity of the parents and selected fusants using rice bran medium and solid state fermentation. Analysis of this optimization was completed using the Central Composite Design (CCD) of the Response Surface Methodology (RSM). Amylase activity assays conducted at room temperature and 80℃ demonstrated that Aspergillus designates, T5 (920.21 U/ml, 966.67 U/ml), T13 (430 U/ml, 1011.11 U/ml) and T14 (500.63 U/ml, 1012.00 U/ml) all exhibited improved function making them the preferred fusants. Amylases produced from these fusants were observed to be active over the entire pH range evaluated in this study. Fusants T5 and T14 demonstrated optimal activity under acidic and alkaline conditions, respectively. Fusants T13 and T14 produced the most amylase at 72 h while parents TA, TC and fusant T5 produced the most amylase after 96 h of incubation. Response surface methodology examinations revealed that the enzyme from fusant T5 was the optimal enzyme demonstrating the highest activity (1055.17 U/ml) at pH 4 and a temperature of 40℃. This enzyme lost activity with further increases in temperature. Starch hydrolysis using fusant T5 gave the highest yield of glucose (1.6158 g/100 ml). The significant activities of the selected fusants at 28 ± 2℃ and 80℃ and the higher sugar yields from cassava starch hydrolysis over their parental strains indicate that it is possible to improve amylase activity using the protoplast fusion technique.

• 복식문화연구
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• 제11권6호
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• pp.835-851
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• 2003

This study analyses patent information of apparel design using computer technology and researches the trend of patent application focused on International Patent Classification. In terms of trend by filling data, Patent application started first in 1974 and increased sharply in 1993 with 14 cases and increased to 25 cases in 2000. In case of Korea, they began somewhat late in 1996, but reached a similar level with the leading country in 2000. In terms of trend by applicant, Gerber Garment Technology, Inc. filed 7 cases TORAY IND INC, filed 6 cases Levi Strauss & Co. filed 4 cases, NEC HOME ELECTRONICS LTD filed 3 cases, TOYOBO CO LTD filed 3 cases. Japanese companies occupied 52% and United States's companies occupied 48%. In terms of trend by country, foreigner occupied 47% of the patents filed by United State. Japanese take up 10% of total patent of United States. Korean occupied 84% of total patent of Korea and foreigner, american occupied 16% of the patents filed by Korea. In regared to International Patent Classification, in the section level G filed 92 cases(53%). In class level, G06 marked the first place in United States, Japan, and Korea. In subclass level, G06F marksed the first place with 74 cases. G06T and A61B were regarded as the new technologies. The new technologies are representing the dimensions of garment or computer-rendered model, providing the virtual reality through the texture mapping, digital dressing room or virtual dressing, and performing or retriving display on a screen for the result of changing pattern ao dress design, The technologies of core patent are designing or producing custom manufactured item, providing or prealtering the data for pattern making and visually displaying, interactively generating or previewing of various articles.

• 한국산학기술학회논문지
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• 제18권1호
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• pp.406-416
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• 2017

본 연구는 대학병원 응급실에 근무하는 응급실 종사자를 대상으로 폭력 경험에 따른 폭력 반응, 소진 및 직무 만족도를 조사하였다. IRB 심의 면제 후 설문지를 이용하여 대학병원 응급실 종사자 167명을 대상으로 2015년 7월부터 8월까지 자기기입식으로 수집하였다. 수집된 자료는 SPSS 21.0 프로그램을 이용하여 빈도와 백분율, 평균과 표준편차, t-test, Pearson's correlation coefficiency, Multiple regression로 분석하였다. 이에 따른 연구 결과는 다음과 같다. 대상자의 응급실 폭력 경험에서 대상자가 폭력에 노출 경험이 있는 경우가 84.4%로 다수를 차지하며 언어폭력이 가장 높게 나타났다. 폭력 가해자는 환자와 보호자에 의한 발생이 많았으며, 보호자의 경우 음주상태인 경우가 많았고 폭력 발생은 야간 근무 때 높게 나타났고, 폭력 경험은 의료진이 가장 많았다. 폭력 경험에 따른 정서적 반응이 유의하게 높게 (t=2.528, p=0.12)로 나타났다. 응급실 폭력 경험 대상자의 폭력 반응과 소진은 유의한 양의 상관관계로 나타났다(r=.616, p=<.001). 응급실 폭력 경험 대상자의 폭력 반응과 직무 만족은 유의한 음의 상관관계를 나타내었으며 (r=-.512, p=<.001) 응급실 폭력 경험 대상자의 소진과 직무 만족은 유의한 음의 상관관계로 나타났다(r=-.568, p=<.001). 직무 만족에 가장 큰 영향 요인은 폭력에 대한 정서적 반응과 소진으로 파악되었다. 이 번 연구는 폭력 예방을 위한 프로그램과 함께 폭력에의 노출 후 정서적 지지 및 스트레스나 소진 관리를 위한 전략이 필요함을 알 수 있었다.

• 대한가정학회지
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• 제27권4호
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• pp.167-191
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• 1989

The present study was conducted to devlop and appropriate retirement home model for the elderly in terms of clothing and textiles; nutrition, health, and foodservice; housing and environment; and psychological adaptation. Specifically, the purposes of the study were: 1) to provide basic guidelines for clothing by comparing the clothing behavior of the elderly living in the retirement home and those living in their own homes with family, 2) to provide basic guidelines for balanced diet and effective foodservice, 3) to develop an ideal life space and facilities, and 4) to assess the psychological characteristics of the elderly. Questionnaires, observation, experimental method, and survey of literature were used for the study. Clothing behavior showed that the elderly were much concerned about clothing, and they preferred comfortable as well as fashionable designs. The elderly in the retirement homes complained of a lack of quantity and variety in clothing. They preferred natural fiber rather than blended fabrics. Flame resistance, thermal insulation, and flexibility of textile fabrics were found to be prime considerations in manufacturing and selecting clothing materials for the elderly. The health status of the surveyed elderly was generally good, but some poor eating habits were observed. Dietary nutrients intakes were generally sufficient, but several nutrients intakes were insufficient. The level of equipment in the kitchens of the institutions was low. Furthermore, the employment rate of dietitians in institutional settings was extremely low. This resulted in a lack of systematic foodservice management. Residents in the institution were generally satisfied with present life space and facilities but this was mainly because of abandonment, adaptation, and past experience. Optimal allocation of residents per bedroom and an adequate design for storage, bathroom, utility room, and dining room were recommended. The comparison of psychological status of the elderly living at home was more stable than those living in an institution. The emotional state of the elderly living in the institution was characterized by loneliness; they did not have close interpersonal relationships or future plans. An appropriate model for the elderly was developed on the basis of these findings.

• 동서간호학연구지
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• 제30권1호
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• pp.51-59
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• 2024

Purpose: The purpose of this study was to determine the effect of preoperative guidance and operating room environment experience using virtual reality on increasing satisfaction with information and reducing anxiety in preoperative patients undergoing general anesthesia and local anesthesia. Methods: A non-equivalent control group quasi-experimental design was employed. The participants were 80 surgical patients from 4 wards (40 experimental group and 40 control group) of the general hospital located in Gyeonggi-do. Data collection was conducted from June to November 2023 after completing the control group survey in January 2023. Data were analyzed using Chi-square, t-test, and Mann-Whitney U test using SPSS 23.0 program. Results: Satisfaction with preoperative information was higher in the experimental group than that of the control group. Additionally, anxiety related to surgery in the experimental group was significantly lower than that of the control group. The preoperative state anxiety score in the experimental group was not significantly lower than that of the control group. Conclusions: These results suggest that providing patient education and information using virtual reality technology can not only alleviate patients' anxiety related to surgery, but also have the potential to be used as an effective intervention to improve positive patient experiences.

• 한국생산제조학회지
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• 제21권4호
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• pp.613-618
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• 2012

The Ultrasonic metal welding is used in the solid-phase welding method at room temperature or low temperature state. In welding process, the high frequency vibration energy is delivered to the welding part under the constant pressure for welding. In this study, we aimed to design and manufacture a 40,000 Hz band horn through finite element analysis. By performing modal analysis and harmonic response analysis, the modal analysis result is that the horn frequency was 39,599Hz and the harmonic response result that the horn frequency was 39,533Hz. These results were similar. In order to observe the designed horn's performance, about 4,000 voltage data was obtained from a light sensor and was analyzed by FFT analysis using Origin Tool. The result RMS amplitude was approximately $8.5{\mu}m$ at 40,000Hz, and maximum amplitude was $12.3{\mu}m$. Using this manufactured horn along with an ultrasonic metal welder and tension tester, the weldability of Cu sheets was evaluated. The maximum tensile force was 66.53 N in the welding condition of 2.0 bar pressure, 60% amplitude, and 0.32 s welding time. In excessive welding conditions, it was revealed that weldability is influenced negatively.

• 기본간호학회지
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• 제12권1호
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• pp.131-138
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• 2005

Purpose: This study was performed to identify the effects of intraoperative music therapy on the anxiety level of adult patients undergoing local anesthesia in the operating room. Method: The research design was a nonequivalent control group pretest-posttest. Data collection was done with 48 patients undergoing local anesthesia from June 2003 to September 2()03. The 24 patients in the experimental group were given music therapy through headphones from the beginning of the operation to the end of the operation with local anesthesia. The data were analyzed using SPSS/PC 10.0 for Windows. Results: Postoperative state anxiety scores were significantly different between the experimental group and the control group. Intraoperative pulse rates were significantly different between the two groups. But systolic and diastolic blood pressures and respiratory rates were not significantly different between the two groups. Conclusion: Considering these results, music therapy can be regarded as an effective nursing intervention that relieves anxiety for adult patients undergoing local anesthesia. However, to determine the best use of this therapy, further study is required for different types of anesthesia and operations such as ambulatory surgery.

• International Journal of Automotive Technology
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• 제2권1호
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• pp.17-23
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• 2001

Measurements of the initial values lead to an inverse and mathematically unprecisely formulated problem. A precise definition of an inverse problem is possible. It is to state a mathematical model of a physical process with clearly defined initial and exit values for the system behind the process. One can grasp the idea of an inverse problem by considering the tire as a copy of the objects of nature in a room with observations. Interpretation of nature is generally a result of an inverse problem. On one hand, the tire may be represented through the sensory organs and the nervous system as well as the experiences of the developer's existing apparatus of the projection of reality. On the other hand, it may be represented by a physical law or a model that can be confirmed or is to be refuted with the help of suitable measurements. During reconstruction of a measuring signal and the identification of a black box that can be assumed to be linear and causal, the tire becomes a first type Volterra integral equation of the convolution type. But measurements of the initial values are always fuzzy, the errors grow and the system behavior can no longer be forecasted. Thus, we have to deal with a chaotic system. This chaos produces fractals in a natural way. These are self-similar geometric structures. This self-similarity is clearly visible in the design.