• 한국표면공학회지
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• 제41권3호
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• pp.102-108
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• 2008

In this paper, the LiF and polymer thin film as passivation layer have been evaporated on green OLED devices. HDPE, polyacenaphthylene, polytetrafluoroethylene, poly(2,6-dimethyl-1,4-pheneylene oxide), poly sulfone and poly(dimer-acid-co-alkyl poly-amine) have been used as polymer materials. The optical transmittance of evaporated polymer thin film was very good as an above 90% in visible range. The morphology of polymer thin film was measured by AFM. As a result of the measurement average roughness($R_a$) value of the polysulfone was very low as 2.2 nm. The green OLED devices with a structure of ITO/HIL/HTL/EML/Buffer/Al in series of various passivation films were fabricated and analyzed. It was observed that an OLED device with LiF as first passivation film has shown the good electrical and optical property, and all kind of polymer films did not influence on the I-V-L characteristics and the life time of OLED devices. Therefore, we found that polymer layer played a key role as a buffer layer between the inorganic passivation layers to relieve the stress of the inorganic layers.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 추계학술대회
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• pp.345-348
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• 2010

미디어는 일상생활의 활력소 역할 뿐만 아니라 사람들의 스트레스를 해소시키는 하나의 문화콘텐츠로 자리 잡았다. 그리고 암울했던 역사적 배경 속에 탄생한 예술작품들 중 퍼포먼스는 시대적 상황에서 벗어나고자 했던 예술가들의 몸부림 속에서 탄생하였다. 퍼포먼스는 시 공간의 제약을 탈피하기 위해 다수의 작품을 영상을 접목시켰다. 미디어 퍼포먼스는 IT 기술뿐만 아니라 예술적 감각과 퍼포먼스가 더해지는 융합예술의 한 분야로 자리매김 하였다. 본 논문에서는 영상매체의 다양한 효과를 분석하고, 미디어 퍼포먼스에서 어떠한 영상이 더 효과적인지에 대하여 고찰하였다.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2012년도 제38회 춘계학술대회논문집
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• pp.117-122
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• 2012

액체로켓 엔진의 시동과 종료 시, 터빈에 가해지는 열충격을 완화시키기 위해 초음속 충동형 터빈로터의 일체형 슈라우드를 여러 조각으로 분할하는 방법을 고안하였다. 구조해석 수행결과 슈라우드 분할은 동익의 허브와 팁에 나타나는 소성변형량을 크게 줄일 수 있는 것으로 나타났다. 그러나 슈라우드 분할은 의도하지 않은 누설손실로 인해 성능손실이 불가피하며 이에 대한 정량적인 성능감소를 측정하기 위해 다양한 슈라우드 분할 형상에 대해 시험을 수행하였다. 연구대상 터빈의 경우 슈라우드 분할 수를 최대로 할 경우 설계점 효율은 2.65% 비율로 감소하는 것으로 나타났다.

• 열처리공학회지
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• 제34권6호
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• pp.309-314
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• 2021

Due to the superior corrosion resistance and mechanical properties of TiAl alloy at high temperature, it has been utilized as a turbine wheel of a turbocharger. The dissimilar metallic bonding is usually applied to combine the TiAl turbine wheel with the SCM440 structural steel which is used as a driving shaft. In this study, the TiAl and SCM440 joint were fabricated by using a friction welding technique. During bonding process, to suppress the martensitic transformation and the formation of cracks, which might reduce a strength of the joints, Cu was used as an insert metal to relieve stress. As a result, the intermetallic compounds (IMCs) layer was observed at TiAl/Cu interface while no IMC formation was formed at SCM440/Cu interface. Since understanding of the IMCs effects on the mechanical performance of welded joint is also essential for ensuring the reliability and integrity of the turbocharger system, we estimated the nanohardness of welded joint region through nanoindentation. The relation between the microstructural feature and its mechanical property is discussed in detail.

• 한국의사학회지
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• 제35권2호
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• pp.19-34
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• 2022

Objectives : The purpose of this study was to compare the prescriptions used for insomnia in Uihagimmun and Donguibogam. Methods : In Uihagimmun, 17 prescriptions were selected. If there was a change in the medicinal material, the altered herbal medicine was indicated along with the prescription name. In Donguibogam, 14 prescriptions were selected. Each prescription was analyzed by dividing it into prescription composition, and herbal medicine. Medications constituting a prescription were classified according to the classification of Korean herbal medicines and arranged based on their frequency of appearance. Result : The causes of insomnia were classified mainly as exhaustion in Uihagimmun and as exhaustion, stress, low energy, aging and discomfort in Donguibogam. In Uihagimmun, numerous medicines were used to relieve fever, and in Donguibogam, the use of stabilizers increased. More warm medicines were used in Donguibogam than in Uihagimmun, and the taste trend was similar in each. Conclusions : The types of causes of insomnia increased more in Donguibogam than Uihagimmun. Accordingly, the two books showed differences in drug classification and properties of a medicine. However, in terms of taste and action of medicinal herbs, they showed similar patterns, and there was only a difference in the order of frequency.

• International journal of advanced smart convergence
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• 제12권4호
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• pp.306-313
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• 2023

Having pet is one of the activities people living in modern society do to relieve stress and find peace of mind. Currently, the object of companion animals has moved beyond being a real 'living entity' and has developed to a stage where the animal's upbringing process can be enjoyed in a virtual space by being programmed in digital content. This paper studies detailed elements such as character design, interaction, and realism of 'Tamagotchi (1996)', which can be said to be the beginning of digital training content, and 'Peridot (2023)', a recently introduced augmented reality-based training content. The point was that it was training content using portable electronic devices. However, while the environment in the electronic device in which Tamagotchi's character exists was a simple black and white screen, the environment in which Peridot's character operates has been changed to the real world projected on the screen based on augmented reality. Mutual communication with characters in Tamagotchi remained a response to pressing buttons, but in Peridot, it has advanced to the point where you can pet the characters by touching the smartphone screen. In addition, through object and step recognition, it was confirmed that the sense of reality had become more realistic, with toys thrown by users on the screen bouncing off real objects. We hope that this research material will serve as a useful reference for the development of digital training content to be developed in the near future.

• 한국가구학회지
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• 제26권1호
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• pp.61-70
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• 2015

There is an increasing trend each year in the number of subway users due to increase in the traffic volume. As the number of train service has risen, the subway drivers are given heavy work and from the same, are put at risk of mental health deterioration due to stress. As this is directly connected to safety, there is an urgent need for improvement of the situation. Therefore, as a way to appropriately relieve such stress, resting space where mental and physical energy can be recharged is necessary. Thus, this research conducted a survey of demand with subway drivers as subjects in order to provide resting space that can offer healthy rest and increase work effectiveness. 50 subway drivers were the subjects of this survey. As a result of analyzing the contents of the survey, environmental satisfaction was shown to be the lowest compared to psychological and morphological satisfaction. In the case of sleeping room, they wanted more comfortable and individual space. And the waiting room had the highest rate of usage frequency. The storage space was where the subway drivers showed the strongest attachment and was shown to be the only personal space. Most were shown to be satisfied with the outdoor space, but it had the lowest usage frequency. In addition, it is nessasery customized storage cabinet designed for subway drivers should be produced, which can effectively arrange the limited space. I hope that these direction of improvement can increase the healthy rest and work effectiveness of the locomotive engineers as it is directly being connected to the health and safety of the citizens.

• 한국의료질향상학회지
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• 제19권1호
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• pp.56-61
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• 2013

Objectives: This video has been produced to provide better awareness for our patients about radiotherapy treatment for anxiety and stress. This video will give inexperienced patients a better understanding of the processes and expectations of the radiotherapy. We have produced a radiotherapy guidance video regarding work flow and a method of radiotherapy to relieve anxiety and stress. It also improves patients satisfaction and understanding of radiotherapy to provide a high-quality health care for radiotherapy patients with indirect experience. Methods: We have evaluated the effectiveness of the video compared to our existing verbal method. See below for the evaluation criteria; 1) Patients satisfaction rate of guidance 2) a comparison of understanding of radiotherapy 3) a comparison of a time of education for patients 4) a researching of an incidence rate of radiotherapy. Results: When compared to the verbal explanation the patients had a increased level of understanding of the radiotherapy treatment. The time to educate patient was decreased and the level of incidents during the treatment was decreased due to the patient having a better understanding of the whole process. Conclusion : In conclusion, the audiovisual education increased the understanding of radiotherapy for patients compared to verbal education. The video also helped patients to cooperate in treatment room so we can provide premium radiotherapy treatment. By reducing the treatment time and education processa we improved the patients overall experience.

• 한국간호교육학회지
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• 제5권1호
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• pp.39-57
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• 1999

Essential hypertension is a typical chronic disease requiring adequate and continuous management. And many studies supported that self-care was the essential factor to promote the wellbeing. The purpose of this study is to identify and understand the behavior patterns of self-care in hypertensives. As a research method, 35 Q-statements were collected through Individual interviews and review of the related literatures. 21 subjects were interviewed and the data were analyzed by the PC QUANL program with principal component analysis. There were 6 different self-care types classified as follows 1) Type 1 was the self-oriented control type, monitoring the blood pressure and taking the low salt diet. But they didn't take the anti -hypertensive drug and visit the health agency regularly. 2) Type 2 was the stress-control type. Their main activities were meditation to relieve the stress and communication with family. 3) Type 3 was called daily-life control type. This type tried to make their mind comfort and think positively. They also preferred walking and exercise regularly. 4) Type 4 was the medical-oriented control type, taking the anti-hypertensive drug, visiting the medical personnel and following the medical regimens. 5) Type 5 was the medication-oriented type. They only took the anti -hypertensive drug regularly and didn't any other self-care like as monitoring the blood pressure, taking the low salt diet and exercise. 6) Type 6 was called non-medication control type. This type had no medication, but tried to visit the health agency and health personnel. From the above results, it can be concluded that the self-care types were very various and self-care education have to provide individually according to the characteristics of self-care type. Another repeated study can be recommended to improve the nursing intervention the self-care behavior in chronic patient like as diabetics or rheumatoid arthritis.

• 환경위생공학
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• 제20권4호통권58호
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• pp.59-68
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• 2005

This study was designed to provide basic data on preventive plans by affecting factors that have analysed on musculoskeletal diseases. The survey were conducted from July 1 to 30, 2004 among 600 hair dressers working in Seoul and Gwangju using self-administration questionnaire. The results of this study are summarized as follows: The pain experience rate of musculoskeletal diseases. in the last one year was $55.2\%,\;35.7\%$ of respondents answered they had pain on shoulders, $30.6\%$ had pain on legs and feet, $28.9\%$ had pain on waist, $26.8\%$ had hands, fingers and wrist, $22.3\%$ had pain on necks and $17.6\%$ had pain arms and elbows more than disease on necks, shoulders, arms and elbows, hands, fingers and wrists, waist, shoulders legs and feet. The prevalence rate of the last week was $40.3\%$. The prevalence rate in each body parts of the last week was $23.3\%$ on legs and feet, $21.2\%$ on shoulders, $20.8\%$ on waist, $14.9\%$ on hands, fingers and wrists, $14.4\%$ on necks, $9.3\%$ on arms. Based on the results above, working posture, job stress and physical burden from task are highly related with pain. In order to prevent musculoskeletal disease of hairdressers, working posture shall be improved and leisure opportunities to relieve stress, and health management education shall be provided.