• Restorative Dentistry and Endodontics
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• 제27권6호
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• pp.612-621
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• 2002

The purpose of this study was to compare the histomorphological change of curved root canal preparation using GT rotary File, Profile .04 taper and stainless steel K-file. 45 mesial canals(over 20 degree) of extracted human mandibular first molars were mounted in resin using a modified Bramante muffle system and divided into three groups. The roots were cross-sectioned at 2.5mm 5mm and 8mm levels from apical foramen. Tracings of the canals were made from preinstrumentation pictures of the cross section. The canals were prepared using a step-back technique with stainless steel K file(group 1), Profile .04 taper rotary file(group 2) and GT rotary file(group 3). Tracings of the prepared canals were made from postinstrumentation picture. Canal centring ratio. amount of transportation, area of dentin removed and shape of canal were measured and statistically were evaluated with Student-Newman-Keuls test using Sigma Stat(Jandel Scientific Software, USA). The results were as followings : 1 Amount of transportation of group 2 was the lowest at apical part, but there was no statistical difference. The direction of transportation was the outside of curvature at apical part. 2. Centering ratio at the apical part of group 1 was the highest, and there was statistical differences between apical and middle part, apical and coronal part(p＜0.05). Centering ratio at the middle part of group 3 was the lowest, and there was statistical difference between apical and middle part(p＜0.05). Centering ratio of group 2 was the lowest at apical part, but there was no statistical difference. 3. Amount of dentin removed of group 1 was the highest at coronal, middle and apical part among three groups, and there was statistical difference(p＜0.05). 4. The majority of the cross-sectioned canal shape after instrumentation were irregular at coronal, middle and apical part. But there are more number of round shaped canals at group 3 than other group.

• 한국융합학회논문지
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• 제6권3호
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• pp.87-95
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• 2015

본 연구는 융합시대를 맞이하여 국내 직무스트레스 관련 연구 동향을 살펴봄으로써 직무스트레스의 원인과 측정도구에 대한 새로운 이해를 돕고 향후 직무스트레스에 관한 연구의 방향을 제시하고자 한다. 이를 위해 1995년부터 2015년까지 발표된 직무스트레스 관련 국내 학술지 64편을 연구대상으로 하였다. 그 결과 가장 많은 연구가 이루어진 시기는 2010년부터 2015년까지였으며, 전체 연구의 73.4%는 조사연구, 14.1%는 상관관계연구 그리고 4.7%는 실험연구였다. 연구대상자는 주로 간호사였고 그 중 60.9%는 임상간호사였다. 결론적으로 대부분의 연구대상자는 임상간호사였으며, 연구방법에서 제시한 바와 같이 직무스트레스는 조사연구를 통해 주로 연구되고 있었다.

• Korean Journal of Acupuncture
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• 제26권1호
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• pp.27-40
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• 2009

Background : Qigong is an energy-healing intervention used to prevent and cure ailments and to improve health through regular practice. Although qigong-neither itself nor its postulated mechanism of action-are within the paradigm of modern Western medical science, its effects on the human body could be possible. Objectives : This study aims to review the bibliography, biological responses and therapeutic effects of Qigong. In the process, this review will grasp trends in this field of studies and will direct further researches into the right direction. Method : The computerized Korean databases were searched from their respective inceptions up to January 2008. The search terms used were 'qi', 'qigong', 'doin', 'training', 'bioenergy', 'life nurturing' and random or Korean language terms related to qigong. Several specialized journals were also manually searched for relevant articles. Result : Since the 1990s, Qigong papers in the Korean Literature are increased. The articles on Korean traditional medicine had been published more than those on physical education or nursing etc. However, since the majority of the trials determine questionnaire, it was difficult to determine the efficacy of a specific intervention. The methodological quality of the trials was generally low (Jadad score: mean, 1.3; range, 1 to 4), questioning their reliability. Conclusions : More profound studies for Qigong are needed. Further rigorous clinical trials with more objective outcome measures that include sham procedures should be performed. Specifically, we think it should be clinical studies and qualitative research methods for evaluation are needed.

• 한국식품영양학회지
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• 제22권2호
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• pp.166-176
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• 2009

This study was performed to develop dietary education programs for children, by researching the actual conditions of dietary education and its demand aimed at teachers in child centers in Masan. Most of the interviewed teachers were in their 20s(71%) with under 5 years teaching experiences(56.8%), and working in a kindergarten environment(34.9%). The rate of doing dietary education on mealtime was 96.4%. The main items taught pertained to 'not leaving food(20.6%)' and 'washing hands before meals(20.5%)'. The primary teaching method for students with unbalanced eating habits was 'eating after teaching them to understood(76.8%). The primary reward for good behavior was 'using food(76.8%)', usually as 'candy'(50.8%) or 'cookies'(25.8%). The desirable dietary education type was 'during spare moments(52.6%)' and 'at mealtime (23.5%)'. The concepts taught were 'balanced eating(23.2%)' and 'food hygiene(21.2%), and the students were interested in 'the roles of foods and nutrients'(34.5%), 'balanced eating(20.9%)', and 'food hygiene(19.1%)'. Educational activities encompassed 'pictures and drawing(25.7%)', 'fairy tales(23.4%)', 'songs(19.4%)', and 'play(14.1%)'. Also, the activities of most interest were 'fairy tales(29.4%)', 'play(24.4%)', and then 'songs(23.1%)'. The greatest difficulties during dietary education were 'attracting interest from the children(37.8%)' and 'making and purchasing materials(33.9%)'. Approximately, 44.2% of the teachers had experiences in dietary education, and 96.4% stated teachers had the intention to participate in dietary education. They want to address 'child meal direction(23.0%)', 'health problems(22.7%)', and then 'child nutrient requirements (17.3%)'. Also the majority wanted it two times per year(57.6%) or one time per year(30.9%). This study indicated that proper dietary education must be established in child centers by developing various practical dietary education programs and then implementing them.

• 대한가정학회지
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• 제47권2호
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• pp.39-53
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• 2009

The purpose of this study was to analyze the state of Vietnamese housing in Korea. Using ethnographic methodologies, it was examined that 22 Vietnamese households in Korea in relation to their usage of housing space. The following conclusion were established; 1). Most of households had kitchen+1 or 2 bedrooms and the majority households preferred separated kitchen and living room areas. 2). Most households had a washing machine in bathroom and they regarded bathtub as not very necessary. They all preferred the bathroom with enough space for using washing machine and hand washing both. 3). Their preferred seating style was using chairs on sleeping as like in Vietnam but they preferred eating without chairs and treated large family and guest without chairs specially. 4). All of them were took their shoes off usually and preferred designated shoes space at the entrance to the house which was not used in Vietnam. 5). A Floor material of all households was vinyl on living room and bedrooms and most of them who had been using tile only in Vietnam preferred vinyl here. 6). All of households had a modified Ondol and most of them who had never been used this before preferred and they regarded as a desirable heating system. 7). They considered the kitchen as the most important housing space and the direction of housing was the one to consider when they built or buy the house.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제20권4호
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• pp.81-89
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• 2014

Purpose : An aging phenomenon was recognized as only negative aspect, which impediment a development with the decrease of a developing population and increase of social burden. Nevertheless, the problem of aging cannot be treated as a problem of individuals or social burden. Because Every mankind sometime will be the person directly involved the aging. Methods : Korea, predict to reach the aging society with over 20 percent of elderly in the whole population in 2020, should find an active political plan for responding. Because a previous discussion about the aging phenomenon focused on social welfare, the housing plan for the elderly with a consideration of the physical environment for sustaining elderly's life with happiness will be primary task. Results : This research considers housing policy, focusing on the medical service. It is because statistics, which 85 percent of elderly people suffer from chronic diseases because of physical aging signify the importance of medical service to the elderly in every-day-life. Implications : We prescribe the elderly as a population over 65. In this duration, the elderly retirees from the workplace e and spend the majority of time in their home. Thus, for the elderly, the residential space is a field of action and passageway connecting with the surroundings For the solution of physical space preparing the aging phenomenon, the combination of residential and medical function creates a new type of a lifestyle.

• Tribology and Lubricants
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• 제35권6호
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• pp.382-388
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• 2019

It is currently well known that surface textures act as lubricant reservoirs, entrap wear debris, and hydrodynamic bearings, which can lead to certain increases in load-carrying capacities. Until recently, the vast majority of research has focused on parallel sliding machine components such as thrust bearings, mechanical face seals, piston rings, etc. However, most sliding bearings have a convergent film shape in the sliding direction and their hydrodynamic pressure is mainly generated by the wedge action. Following the first part of the present study that investigates the effect of groove position on the lubrication performances of inclined slider bearings, this paper focuses on the effects of groove depths and film thicknesses. Using a commercial computational fluid dynamics (CFD) code, FLUENT, the continuity and Navier-Stokes equations are numerically analyzed. The results show that the film thickness and groove depth have a significant influence on the pressure distribution. The maximum pressure occurs at the groove depth where the vortex is found and, as the depth increases, the pressure decreases. There is also a groove depth to maximize the supporting load with the film thickness. The friction force acting on the slider decreases with deeper grooves. Therefore, properly designed groove depths, depending on the operating conditions, can improve the load-carrying capacity of inclined slider bearings as compared to the bearings without a groove.

• 보건의료산업학회지
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• 제6권1호
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• pp.39-51
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• 2012

The purpose of this study is to provide a set of fundamental data for the oral hygiene education for the elderly as a result of the survey on the oral hygiene and subjective oral health of the elderly in an aged society. For this purpose, 269 elders who dwelled in Gyeongsangbuk-do region were randomly selected in an arbitrary selection process, followed by a survey on their oral hygiene and health. The collected data were coded and processed by using SPSS 15.0 software. As for the analysis of the data, the general characteristics and the basic items concerning the management of the oral health were analyzed for their frequency and percentages, while the general characteristics and the awareness on the oral health were processed with Chi-square validation to show a set of results as follows; Firstly, among the items on the oral health, the satisfaction on the current condition of their oral health was below average. Secondly, concerning the oral hygienic behaviors, the majority of the samples answered that they were brushing their teeth twice a day. And, as for the brushing methods, the largest number of the samples answered that they were brushing their teeth in a 'horizontal direction'. Thirdly, they reported they were having difficulties in getting dental treatments. The implications of this study are that it is necessary to provide sound oral health education to them to correct the inappropriate oral hygienic behaviors.

• 대한한의학회지
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• 제41권3호
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• pp.32-54
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• 2020

Objectives: The purpose of this scoping review is to describe the research trends of postpartum healthcare for postpartum women, as well as to identify further direction for research in the area of postpartum healthcare. Methods: This study was conducted sequentially according to the Scoping Review Method referred to as 'frameworks of Arskey and O'Malley'. We searched for articles published as of May 15th, 2020 in seven Korean databases in order to obtain the data. A key term search strategy was employed, including terms such as "Postpartum period care", "Postpartum health", "Postpartum care", and "Postpartum status" to identify relevant studies. Results: Eighty-three articles were selected from a total of 259. The research has been undertaken steadily since 1997, particularly in the fields of Nursing and Korean medicine. In terms of study design, survey studies were the majority (48.2%), followed by interventions and experimental papers (32.5%). However, qualitative research areas are lacking. The research topics were largely divided into two categories: postpartum care characteristics and postpartum care interventions. The characteristics of postpartum care were highly connected with care for mental health. Among the postpartum care interventions, the most common employed was Korean medicine intervention. Conclusion: This study confirms that management of mental health during the postpartum period is necessary. In addition, it is necessary to identify the experiences of postpartum women and the effectiveness of a postpartum care intervention program through the utilization of qualitative research methods. In particular, such research is needed in the field of Korean medicine.

• 정보관리학회지
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• 제24권4호
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• pp.33-51
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• 2007

인터넷 환경에서 정보검색의 기본적인 사안은 선택된 언어의 문자와 긴밀한 연관을 갖고있다. 매큔-라이샤워시스템은 학술적 및 비학술적 적용을 위한 국제표준으로서, 목록 및 검색시 이용되고 있을 뿐만 아니라 대부분의 한국자료 이용자들에게서 널리 사용되고 있다. 현재 ISO, UNGEGN, LC, ALA, BL, 영국지명위원회와 유럽, 호주, 캐나다 등의 유관기관들은 모두 매큔-라이샤워시스템을 채택하여 사용하고 있다. 따라서 현재 도서관 일각에서 진행하려고 시도하는 2000년식 새한글로마자시스템으로의 표기방식 전환은 도서관 목록과 온라인DB 등에서 많은 혼란을 일으키게 할 것이다. 본 논문에서는 국제기관에서의 이 분야에 대한 노력을 소개하고, 현재 사용하고 있는 상세한 규정을 통하여 로마자시스템을 심층적으로 분석, 소개하여 향후 이 문제를 둘러싼 한국 도서관계가 현명한 판단과 대처를 할 수 있도록 연구결과를 제시하였다.