• 대한의용생체공학회:의공학회지
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• 제39권1호
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• pp.22-29
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• 2018

Intervertebral disc(IVD) mainly consists of Annulus fibrosus(AF) and Nucleus pulposus(NP), playing a role of distributing a mechanical load on vertebral body. IVD tissue engineering has been developed the methods to achieve anatomic morphology and restoration of biological function. The goal of present study is to identify the possibilities for creating a substitute of IVD the morphology and biological functions are the same as undamaged complete IVD. To fabricate the AF and NP combine biphasic IVD tissue, AF tissue scaffolds have been printed by 3D bio-printing system with natural biomaterials and NP tissues have been prepared by scaffold-free culture system. We evaluated whether the combined structure of 3D printed AF scaffold and scaffold-free NP tissue construct could support the architecture and cell functions as IVD tissue. 3D printed AF scaffolds were printed with 60 degree angle stripe patterned lamella structure(the inner-diameter is 5mm, outer-diameter is 10 mm and height is 3 mm). In the cytotoxicity test, the 3D printed AF scaffold showed good cell compatibility. The results of histological and immunohistochemical staining also showed the newly synthesized collagens and glycosaminoglycans, which are specific makers of AF tissue. And scaffold-free NP tissue actively synthesized glycosaminoglycans and type 2 collagen, which are the major components of NP tissue. When we combined two engineered tissues to realize the IVD, combined biphasic tissues showed a good integration between the two tissues. In conclusion, this study describes the fabrication of Engineered biphasic IVD tissue by using enable techniques of tissue engineering. This fabricated biphasic tissue would be used as a model system for the study of the native IVD tissue. In the future, it may have the potential to replace the damaged IVD in the future.

• 대한간호학회지
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• 제24권1호
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• pp.96-114
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• 1994

This study was carried out to describe and analyze experimental studies conducted in graduates nursing degree. Of 170 experimental studies conducted during the past three decades between 1962 and August 1991, 150 studies were available, including 124 master’s and 26 doctoral theses. This study examined their general characteristics and detailed research methods using percentiles. The results were as follows 1. Most of the studies adopted a quasi-experimental design. 2. The subjects of the studies were chosen by convenience sampling except for two studies whose subjects were drawn by randomization. Studies comparing experimental and control groups were in the highest proportion and the most frequent sample sizes of each group were 21 to 30 for both experimental and control groups. 3. As to measurement, physiological measures were most frequent followed by psychsociological measures and active report questionnaires. Each study, on average, adopted two kind of measurement tools. Studies in which the data collection period was of 1~2 months were in the highest pro-portion. 4. All doctoral theses and 67.0% of master’s theses examined specific research hypotheses. Of these studies, the results of 92.5% supported the hypotheses. 5. Parametric statistics were the major analytical methods. In particular, t-test was used most frequently followed by Chi square, F-test, and Pearson Correlation Coefficients. 6. Patients were the most frequent study subjects. Frequent nursing interventions were information and education followed by support, distraction, and nursing treatments. 7. With regards to the dependent variables, “feelings” such as anxiety, pain, and depression were most frequent. In addition “exchanging” such as restoring, metabolism, cardiopulmonary function, infection and vital signs were adopted as the dependent variables in 29.1％ of the studies examined, while 12.3% of the studies selected “choosing” such as stress, health behavior, or role performance.

• 구강회복응용과학지
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• 제32권3호
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• pp.255-262
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• 2016

본 증례는 심미적, 기능적 상실을 동반하여 심하게 마모가 진행된 환자의 치료에 중점을 둔다. 장기간의 구치부 지지 상실은 포괄적인 보철 수복을 요한다. 정확한 임상적 및 방사선학적 검사, 진단 납형 제작, 수직 고경 평가 후, 임시 수복물을 통해 환자의 적응도를 평가하였다. 8주간의 관찰기간 후에, 별다른 이상이 발견되지 않아, 최종 수복물을 제작하였다. 최종 수복물 장착 6개월 후에도 만족스런 기능적, 심미적 결과를 얻을 수 있었다.

• 한국기록관리학회지
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• 제13권2호
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• pp.115-147
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• 2013

본 연구는 표준 RMS를 대상으로 보존 기능 구현 여부와 그 방식을 확인해보고 이후 보존 기능 개선을 위한 고려해야 할 시사점을 도출하였다. 법률과 공공표준 분석을 통해 기록관에서 이루어지는 공공 전자기록 보존 활동을 추출하고, 이를 바탕으로 표준 RMS가 구현하였다 밝힌 보존 기능과의 예비 평가를 실시하였다. 그 결과 표준 RMS는 기록관에서 이루어지는 전자기록 보존 기능의 대부분을 포맷변환에 할당하고 있음이 드러나 이 연구에서도 포맷변환 기능으로 한정하여 평가하는 것으로 축소하였다. 조정된 범위에 맞게 평가에 이용할 체크리스트를 작성한 후, 이를 활용하여 표준 RMS의 보존 기능을 사용한 경험이 있는 기관의 기록물관리 전문요원을 대상으로 면담을 진행하였다. 그 결과, 표준 RMS는 기능 구현의 측면에서는 일정 정도 긍정적으로 평가될 수 있으나 기능의 이용편의성 등과 같은 구현 방식은 기록물 전문요원의 업무를 효율적으로 지원하기 힘든 것으로 드러났다. 이에 이후 표준 RMS의 보존 기능 개선상 고려해야 할 사항을 제안하였다.

• 교육시설 논문지
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• 제23권4호
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• pp.11-20
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• 2016

Post Occupancy Evaluation(POE) has a good role to improve or adapt the design items through the survey or interview of the resident. Among buildings, the university dormitory provides the living function to support the study in the university. Therefore, it needs to find the design elements and improve the living and study condition for residents. In this paper. it aimed at conducting the POE in university women dormitory for women and providing the building and design items for the next improvement. In addition, it aimed at analyzing the relation between the building satisfaction and the affecting factors, dividing the building into 8 spatial area such as room, entrance area, toilet and etc.. For these, data are surveyed the women dormitory located in the north area of Kyungsangbuk-Do and collected the 683 samples. This study shows some results ; First, the resident evaluates living condition of the dormitory room is a little good. Second, the freshman has a good score more than any other grade, which probably affect the period of the experience and exposure in university. In addition, residents get affect from the finishings, furniture and inconvenience. Third, the resident evaluates living condition of the dormitory room is a little good. Fourth, the satisfaction degree is affected by each size more than any other components in 8 spatial areas. Especially, the number of laundry machine is important factor for satisfaction. Second, the overall satisfaction is affected by room size higher than any other factors.

• 대한통합의학회지
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• 제9권4호
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• pp.85-89
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• 2021

Background : Klippel-Trenaunay-Weber syndrome (KTS) is a rare congenital medical condition characterized by complex vascular malformation. KTS consists of a classic triad of capillary malformation (hemangioma), venous malformations and bone or soft tissue hypertrophy causing limb asymmetry. The aim of this report is to describe management for gait disturbance and foot pain in a Patient with KTS using custom-made total contact insole. Case presentation : A 32-year-old man with KTS presented with a 3-year history of gait disturbance on hard surface due to right first toe pain and Achilles tendon tightness. The patient had soft tissue hypertrophy, varicose veins and port-wine stains over the right lower limb associated with KTS. True leg length discrepancy was 2 cm. We prescribed custom-made total contact insole to protect his deformed foot and correct leg length discrepancy. The insole of right side included wedge shaped heel lift and the insole of left side included full length lift to add extra support on unaffected side. Also, we provided compression stocking and physiotherapy including manual lymphatic drainage for lymphedema and stretching exercise for tightness in right lower extremity. At 3 years follow-up, postural alignment including pelvic obliquity was improved using a custom-made total contact insole. The degree of scoliosis and foot pain were also reduced. Conclusion : An individualized and multidisciplinary approach is essential regarding the complexity of comorbidities in patients with KTS. For patients with KTS, orthotic management should be considered to prevent and correct deformities related to KTS. Active orthotic management, compression stocking and physiotherapy can enhance the quality of life and function in patients.

• Structural Engineering and Mechanics
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• 제85권5호
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• pp.679-691
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• 2023

Many codes allow designers to use the bending moment diagram computed by elastic analysis and modify it by a certain amount of moment redistribution (MR) to account for plastic behaviour of continuous beams. However, several researchers indicated that the MR at the ultimate limit state (𝛽_u) for some beams deviate significantly from the specified values of various codes. This paper examines the applicability of the provisions on 𝛽_u in ACI 318-19 and Eurocode 2 through numerical investigations and comprehensively explores the influencing factors. The results show that some parameters not considered in those codes influence 𝛽_u to a certain extent, where the ratio of tensile reinforcement ratio at intermediate support to tensile reinforcement ratio at midspan (𝜌_s1/𝜌_s2) and load type are crucial parameters to consider. The specific combination of these two parameters may make the codes overestimate or significantly underestimate the 𝛽_u. On the other hand, the yield state of both critical sections is found to have an important influence on the influence degree of each parameter on 𝛽_u. The yield conditions are investigated, and an empirical judgment equation is proposed. In addition, the influence laws of the critical parameters on 𝛽_u have been further proved by theoretical derivation. Finally, due to 𝜀_t is found to have a better linear correlation with 𝛽_u than x_u/d, equations as a function of 𝜀_t for predicting the 𝛽_u of continuous beams under the two loads are proposed, respectively.

• 한국해양공학회지
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• 제33권6호
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• pp.590-596
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• 2019

Numerous deaths and substantial property damage have occurred recently due to frequent disasters of the highest intensity according to the abnormal climate, which is caused by various problems, such as global warming, all over the world. Such large-scale disasters have become an international issue and have made people aware of the disasters so they can implement disaster-prevention measures. Extensive information on disaster prevention actively has been announced publicly to support the natural disaster reduction measures throughout the world. In Japan, diverse developmental studies on disaster prevention systems, which support hazard map development and flood control activity, have been conducted vigorously to estimate external forces according to design frequencies as well as expected maximum frequencies from a variety of areas, such as rivers, coasts, and ports based on broad disaster prevention data obtained from several huge disasters. However, the current reduction measures alone are not sufficiently effective due to the change of the paradigms of the current disasters. Therefore, in order to obtain the synergy effect of reduction measures, a study of the establishment of an integrated system is required to improve the various disaster prevention technologies and the current disaster prevention system. In order to develop a similar typhoon search system and establish a disaster prevention infrastructure, in this study, techniques will be developed that can be used to forecast typhoons before they strike by using artificial intelligence (AI) technology and offer primary disaster prevention information according to the direction of the typhoon. The main function of this model is to predict the most similar typhoon among the existing typhoons by utilizing the major typhoon information, such as course, central pressure, and speed, before the typhoon directly impacts South Korea. This model is equipped with a combination of AI and DNN forecasts of typhoons that change from moment to moment in order to efficiently forecast a current typhoon based on similar typhoons in the past. Thus, the result of a similar typhoon search showed that the quality of prediction was higher with the grid size of one degree rather than two degrees in latitude and longitude.

• 한국산학기술학회논문지
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• 제18권3호
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• pp.258-269
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• 2017

본 연구는 Pender(1996)의 건강증진모형을 중심으로 유방암 환자의 건강증진행위 예측요인을 파악하기 위해 시도한 서술적 조사연구이다. 2015년 9월 18일부터 10월 26일까지 구조화된 설문지를 이용하여 유방암 환자 121명을 대상으로 자료를 수집하였다. 수집된 자료는 SPSS 20.0 for Windows 프로그램을 이용하여 t-test, ANOVA와 Scheffe 사후검정, Pearson correlation coefficients 및 위계적 다중회귀분석 방법으로 분석하였다. 대상자의 건강증진행위 예측요인은 사회적지지, 행동계획 몰입, 이전건강 행위, 행위관련 감정, 지각된 자기효능감, 가족기능, 지각된 유익성, 상황적 영향 등 8가지 변수로 파악되었고, 총 설명력은 58%이었다. 이상으로 유방암 환자들이 재활기에 최적의 건강을 유지하고 질 높은 삶을 살 수 있도록 돕기 위해서는 대상자의 건강증진행위 수준을 상승시키도록 돕는 간호중재의 개발과 적용이 필요하다. 특히 본 연구결과 유방암 환자의 건강증진행위 예측요인으로 밝혀진 사회적 지지, 행동계획 몰입, 이전건강 행위, 행위관련 감정, 지각된 자기효능감, 가족기능, 지각된 유익성 및 상황적 영향 수준이 낮은 대상자들에게 특별히 관심을 가질 필요가 있겠다.

• 구강회복응용과학지
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• 제26권4호
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• pp.477-482
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• 2010

다수 구치부 상실을 가진 환자의 경우 상실 공간으로 대합치의 정출 및 잔존 전치부 저작으로 인한 교합 외상이 발생한다. 대합치의 정출로 인해 교합 평면이 붕괴되고 구치부 지지 상실로 잔존 치아의 심한 마모를 보이게 된다. 이 경우 보철 수복 공간을 확보하고 교합 평면을 바로잡기 위해서 최소한의 수직 고경을 높여 잔존 치아와 상실된 치아 부위의 수복치료가 필요하게 된다. 본 증례의 환자는 다수 구치 상실로 인한 저작 곤란 및 마모된 전치로 인한 심미적 문제로 내원한 환자이다. 보철 수복을 위한 치아 삭제 전 가역적인 거상 장치를 2개월간 사용한 뒤, 비가역적인 치아 삭제 후 임시 수복물을 3개월간 사용하여 총 5개월간 최종 수복물에 대한 적응 여부를 관찰하였다. 수직 고경 거상량은 3mm로 비교적 작은 양이었고 저작계가 증가된 수직 고경에 대해 특별한 병적 변화 없이 적응하였다. 최종 수복물은 중심 교합시 전체 치아가 균등하게 접촉하고 측방운동시 견치에 의해 즉각적으로 이개되도록 하였으며 금속 교합면를 부여하여 장기적으로 과도한 근육 활성 및 교합 외상, 도재의 파절을 방지하고자 하였다. 이상의 치료를 통해 교합 붕괴 환자를 안정적인 보철 수복물로 재건한 치험예를 보고하고자 한다.