• Journal of Korean Biological Nursing Science
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• 제15권4호
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• pp.164-172
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• 2013

Purpose: The aim was to measure the real-time trans-mission effect of blood-pressure and blood-glucose value based on u-healthcare for saving the time and effort of nursing recording time. Methods: This study used a u-healthcare system based on the international standards for the exchange of health information. In order to verify the effectiveness of the u-healthcare, a clinical trial for the system regarding blood-pressure and blood-glucose targeting of patients with endocrine disorders at KNUH from February 7 to 9, 2012 was performed. Results: According to the analyzed results, of the 86 times the 11 patients were tested, measuring blood-pressure and blood-glucose using the u-healthcare system, we found the time differences between the real-time transfer recording method and existing hospital records that were used in the hospital. Based on the average time interval, there was a difference of 1,090.45 seconds (18.17 minutes). Conclusion: Therefore, it's cumbersome that nurses in the hospital have to record the numerical values of the measured blood-pressure and blood-glucose manually and input the recorded values directly into the electronic nursing record system. However, it was found in terms of the newly designed system, that it could save time and effort for nurses, since measured information is sent to the hospital information system on a real-time basis.

• 한국건축시공학회지
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• 제12권3호
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• pp.347-357
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• 2012

While it is generally possible to install curved panels manufactured in a factory within the permitted error range on an irregular surface frame of concrete or steel, it is difficult and expensive. Freeform architecture is thus designed and constructed differently from formal buildings. In order to more easily and inexpensively actualize freeform architecture, Building Information Modeling (hereinafter referred to as BIM) has recently been applied in the construction industry. However, the related research and case analyses are not sufficient to identify the implications and contributions of freeform buildings in future similar projects. Therefore, this research will study design and construction methods for freeform surfaces, particular the concrete surface frame of freeform buildings based on BIM, focused on the Tri-Bowl project. This study attempts to analyze the pros and cons of each method for the concrete surface frame of the Tri-Bowl, and then presents the lessons learned and implications related to the design and construction process of the freeform architecture. Several implications for design and construction of concrete surface frame of the freeform building, the Tri-Bowl, are found. The first is that manufacturing and installation of a curved concrete frame is precisely performed based on the exact numerical values of materials and installation made using BIM 3D technologies, such as CATIA and Rhino. The second is that close and continuous collaboration among the different participants in the construction of the Tri-Bowl allowed them to cope with virtual conditions. The third is that design and construction processes have changed, and high quality of the surface frame of a freeform building is required.

• 한국건축시공학회지
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• 제12권3호
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• pp.323-331
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• 2012

1970년대부터 고온을 받은 콘크리트의 압축강도, 탄성계수, 열응력 등 콘크리트에 영향을 미칠 수 있는 내적, 외적 인자들의 역학적 특성은 조사되어 왔다. 특히, 골재의 열적 특성이나 냉각 방법은 잔존 역학적 특성을 평가하는데 가장 중요하다. 본 연구에서는, 골재 종류와 냉각 방식에 따른 콘크리트의 역학적 특성에 대해 평가했다. 본 연구에서는 열적특성이 다른 일반 골재와 경량골재를 사용했다. 또한, ${\O}100{\times}200mm$ 원주형 공시체를 사용하여 목표 온도, 서냉 및 급냉조건 후에 역학적 특성을 평가하였다. 결과적으로, 보통 골재를 사용한 콘크리트는 경량골재를 사용한 콘크리트보다 냉각조건이 미치는 영향이 큰 것으로 나타났다. 그리고 냉각 속도가 빠르지 않을수록 콘크리트의 잔존 역학적 특성이 크게 나타났다.

• 한국전자파학회논문지
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• 제10권4호
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• pp.550-563
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• 1999

본 논문은 시변 맥스웰 방정식에 기초한 웨이브릿-갤러킨 설계를 제안하였다. 두 개의 모멘트 함수가 0 이 되는 Daubechies 웨이브릿 함수를 기저함수로 전개하고 Yee가 제안한 Leap-frog 접근법을 적용하였다. D Daubechies 웨이브릿의 변위된 보간 특성을 이용하여 적분이나 매체 연산자에 대한 부가적인 행렬이 필요없 는 방정식을 유도하였다 안정화 조건을 유도하고 분산특성을 분석한 후 유한차분 시간영역법과 다해상도 시 간영역법의 결과와 비교하였고. 분산특성의 분석을 통해 기저함수의 정규성(Regularity)과 받침폭(Support width) 사이의 균형을 확인했다. 기저함수가 단 2개의 0이 되는 웨이브릿 모멘트 함수를 가지지만. 이는 수치 해석 상에서 무시할 수 있는 분산 오류를 수반하였고, 컴팩트 받침(Compact support)에 의해 노드 당 적은 수의 계수만이 고려되었다. 제안된 설계의 저장계수의 효율, 실행 시간의 감소와 정확도를 균일 공진기와 비 균일 공진기의 공진주파수 해석을 통해 검증하였다.

• 한국인터넷방송통신학회논문지
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• 제14권6호
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• pp.41-46
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• 2014

여러 국가의 관련기관들은 지역 별로 방사능 정상범위를 제시해 주기적으로 검사하고 있으며 우리나라 역시 방사능 대책 인프라를 구축하여 항시 대비하고 있다. 특히 일본 후쿠시마 피폭사건과 같은 방사능오염이 빈번하게 발생함에 따라 방사능에 대한 사람들의 인식이 위험수준으로 변화하고 있다. 본 데이터는 방사능 정상수치와 관련해 미국정부에서 수집을 하여 각 속성정보들을 파악하고 초과한 수치를 비교분석하였다. 분석 방법으로는 군집화를 사용하고, 특히 EM 알고리즘과 SimpleKMeans 알고리즘을 토대로 실험하였다. 그 결과 정상범위 수치가 높을수록 초과할 확률이 높은 것으로 나타났으며 시간적비용이나 분석정도에 따라 사용할 알고리즘이 다를 수 있다는 것도 알 수 있다. 따라서 정상범위가 높은 지역일수록 해당 기관부처나 정부에서는 조사 빈도수를 높여 반영해야 한다.

• Journal of Acupuncture Research
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• 제23권1호
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• pp.95-103
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• 2006

Objectives : This study was to evaluate the clinical effectiveness of Bee Venom acupuncture therapy for acute ankle sprain. Methods : From September 1st, 2005 to December 31st, 2005, the 60 patients who had visited Conmaul oriental medical hospital with acute ankle sprain were sample into 2 groups for this study; one group for the bee-venom acupuncture therapy combined with needle acupuncture therapy and the other group for needle acupuncture therapy only at least 3 times respectively. Both group had been treated with same additional infrared lamp, physical therapy and ankle supporter during the whole treatment period. Among 60 patients, 20 participants satisfied the whole inclusion criteria. To estimate the efficacy of treatments, Numerical Rating System(NRS) and Ankle-Hindfoot Scale(AHS) were applied before 1st and 4th treatment. Each score results were analysed and compared by Mann-Whitney test and Wilcoxon signed rank test with the level of 5% significance. Result : The NRS score in bee-venom acupuncture therapy group was increased significantly and the AHS score in bee-venom therapy group was decreased significantly compared to each of single acupuncture therapy group(P<0.01). The score change comparisons between the two groups had no significance before and after the treatment. Conclusion : Both bee-venom acupuncture therapy and single acupuncture therapy were effective to treat the acute ankle sprain. but there were no significant data to prove that bee-venom acupuncture therapy is more effective than single acupuncture therapy.

• 대한치과교정학회지
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• 제48권2호
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• pp.90-97
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• 2018

Objective: The aim of this study was to assess the analgesic effect of a single application of low-level laser therapy (LLLT) on spontaneous pain and pain on chewing after placement of initial archwires. Methods: Forty-two patients (26 women, 16 men) were randomly recruited for this split-mouth randomized clinical trial. Each patient received super-elastic nickel-titanium (NiTi) initial archwires (0.012, 0.014, 0.016, and 0.018-inch [in]) in the maxilla for leveling and alignment for an interval of 4 weeks between archwires. One side of the mouth was randomly designated as experimental, while the other side served as placebo. After insertion of each archwire, the experimental side was irradiated with a diode laser for 3 seconds each on 5 points facially and palatally per tooth, from the central incisor to first molar. On the placebo side, the laser device was held the same way but without laser application. A numerical rating scale was used to assess the intensity of spontaneous and masticatory pain for the following 7 days. The Mann-Whitney U test was used to compare pain scores between sides. Results: Patients in the LLLT group exhibited significantly lower mean scores for spontaneous pain after insertion of the initial two archwires (0.012-in and 0.014-in NiTi; p < 0.05), while there was no significant difference for 0.016-in and 0.018-in wires between the LLLT and placebo groups. LLLT significantly reduced chewing pain scores (p < 0.05) for all archwires. Conclusions: A single dose of LLLT considerably lessened postoperative pain accompanying the placement of super-elastic NiTi wires for initial alignment and leveling.

• 한국지반공학회논문집
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• 제16권1호
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• pp.19-30
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• 2000

앵커식 고정지지 널말뚝의 설계요소는 널말뚝의 최소 근입깊이, 앵커가 부담하여야 할 장력 및 널말뚝이 받는 최대 휨모멘트이다. 널말뚝 설계는 Rankine의 토압이론을 근거로 가정한 토압분포를 적용하여 변곡점을 중심으로 위쪽과 아래쪽을 나누어 단순보로 보는 Blum의 등가보법이 흔히 쓰이고 있다. 설계용도표가 개발되어 있으나 기하학적 조건과 지반조건의 제약으로 실무적으로 이용하기에 불편함이 있다. 본 논문에서는 이러한 불편함을 해소하기 위해 설계용 도표를 개발하였다. 또한 다양한 설계조건에 대하여 컴퓨터 프로그램으로 생성된 출력자료를 회귀분석하여 설계용 간편식을 제시하였다. 간편식은 설계과정을 단순화하고 오류를 줄이며 필산의 결과에 대한 검산으로도 활용할 수 있다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2006년도 춘계 학술발표회 논문집
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• pp.1038-1045
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• 2006

The Green Wall is highest eco-system among a segmental retaining wall systems. Recently, the demand of high segmental retaining wall (SRW) is increased in domestic. The soil nailing system is applied in order to maintain the high SRW stability for steeper slope. However, the proper design approach that can consider the earth pressure reduction effects in soil nailing system has not been proposed. This study was performed to introduce the design case by 'Two-Body Translation mechanism' to be able to consider distribution of earth pressure in the soil nailing when designing the green wall using soil nailing system. Also, this study attempts to evaluate the earth pressure change when advanced soil nailing system is constructed using $FLAC^{2D}$ ver. 3.30 program and 'Two-Body Translation mechanism'. Also in this study, various parametric studies using numerical methods as shear strength reduction (SSR) technique and limit equilibrium technique were carried out. In the parametric study, the length ratio and the bond ratio of the soil nailing were changed to identify the earth pressure reduction effect of the retaining wall reinforced by soil nailing.

• KIEAE Journal
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• 제16권3호
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• pp.89-94
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• 2016

Purpose: This study aimed at developing an artificial neural network (ANN) model to predict the optimal start moment of the setback temperature during the normal occupied period of a building. Method: For achieving this objective, three major steps were conducted: the development of an initial ANN model, optimization of the initial model, and performance tests of the optimized model. The development and performance testing of the ANN model were conducted through numerical simulation methods using transient systems simulation (TRNSYS) and matrix laboratory (MATLAB) software. Result: The results analysis in the development and test processes revealed that the indoor temperature, outdoor temperature, and temperature difference from the setback temperature presented strong relationship with the optimal start moment of the setback temperature; thus, these variables were used as input neurons in the ANN model. The optimal values for the number of hidden layers, number of hidden neurons, learning rate, and moment were found to be 4, 9, 0.6, and 0.9, respectively, and these values were applied to the optimized ANN model. The optimized model proved its prediction accuracy with the very storing statistical correlation between the predicted values from the ANN model and the simulated values in the TRNSYS model. Thus, the optimized model showed its potential to be applied in the control algorithm.