• 대한토목학회논문집
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• 제34권1호
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• pp.155-165
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• 2014

본 연구에서는 낙동강 유역을 대상으로 물리, 화학, 생물학적의 복합적인 평가요소를 이용하여 수생태 관련 기후변화 취약구간을 선정하였다. 먼저 SWAT 모형을 이용하여 A1B 기후변화 시나리오에 따라 각 소유역별로 유출량, 유사량, 갈수량 변화를 모의하였다. 또한 환경부의 수질 측정망과 수생태 건강성 측정 지점이 서로 일치하는 48개 지점을 대상으로, BOD 및 TP 등의 수질 데이터와 IBI, KSI의 수생물 데이터를 평가에 반영하였다. 한편, 미래 기온 상승에 따른 낙동강 유역 하천에서의 수온 상승 폭을 예측하였고, 이로 인한 수생물 서식처 영향을 분석하여 평가에 반영하였다. 각 평가요소를 종합하여 가장 취약한 상위 10개 지점을 제시하였다. 본 연구는 하천 생태복원을 위한 취약구간 평가 및 종합적인 평가 결과를 토대로 각 하천 특성에 맞는 하천 관리 계획을 수립하는데 있어 효과적일 것으로 사료된다.

• 응용통계연구
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• 제22권4호
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• pp.735-744
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• 2009

이 논문에서는 장기억 과정에서의 변화점을 빨리 검출하는 베이지안 추론방법에 대해 알아본다. 장기억 과정에서의 베이지안 추정은 장기억 모수값에 따라 전체 자료에 대한 부분차분을 계산해야 하기 때문에 수행시간이 많이 걸린다는 문제가 있다. 이 논문에서는 이러한 문제를 해결하고자 장기억 모수공간을 그룹화하여 순서형으로 범주화시킨 후 설명력이 가장 높은 범주의 대표값을 선택하게 하였다. 이 방법은 초기단계에서 범주의 대표값에 대해 한번씩만 부분차분을 계산하면 되기 때문에, 매번 계산해야 하는 추정하는 방법보다, 특히 시계열자료의 수가 많은 경우, 상대적으로 빠른 베인지안 추론이 가능하다. 또한 장기억 모수공간이 (0,0.5) 이기 때문에 모수공간을 적절하게 그룹화한다면 장기억 모수를 선택하는 것이 모수를 추정하는 것에 비해 큰 차이가 없다. 이 논문에서는 나일강 수위자료 실증분석을 통해 제안된 방법의 타당성을 확인해본다.

• 한국치위생학회지
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• 제15권1호
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• pp.161-169
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• 2015

Objectives: The purpose of the study was to examined the demand for the change in Korean dental hygiene curriculum. This study compared the dental hygiene curriculum of domestic and overseas university and tired to provide the basic data for the development of standard curriculum that meets the education policy changes. Methods: Data were obtained from a cross-sectional survey of 1,192 participants including dental hygiene professors, dental hygienists and students. Data were collected by mail, telephone call from the professors and research assistants, email, and direct visit from June 10 to August 10, 2013. The questionnaire consisted of 4 questions of general characteristics of the subjects and 13 questions of dental hygiene curriculum. Results: The professors answered the development of integrated dental hygiene curriculum as the first priority(48.9%) and dental hygienists(51.6%) and students(42.6%) chose the development of new dental hygiene curriculum(p<0.001). In the analysis of validity of dental hygiene curriculum, the professors gave 3.29 to the validity of evaluation for basic job performance, and the clinical dental hygienists and the students gave 3.05 and 3.26 points, respectively(p<0.001). In relation to the necessity of the change of the dental hygiene curriculums, the professors gave 4.17 points which implied that curriculum change is the most important and necessary thing to do. The clinical dental hygienists and the students gave 3.90 and 3.47 points, respectively(p<0.001). Conclusions: The above-mentioned findings suggest that the revision of the current Korean dental hygiene curriculums is required. Therefore organizations related to dental hygiene including professor association and Korean Dental Hygienists Association should carefully rebuild the curriculum to improve the competency of dental hygienists. They should take the initiative in the development of a standardized curriculum.

• 대한한의학회지
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• 제38권3호
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• pp.1-12
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• 2017

Objectives: To interpret the meanings of Ryodoraku data and to use it as diagnosis tool, study on relationship between Ryodoraku and autonomic nervous reaction (ANR) has to be preceded prior to disease studies. This study aims to observe the change of Ryodoraku characteristics with ANR caused by treadmill exercise via a feasibility study. Methods: The electric current at 24 Ryodoraku points(H1~H6 at left/right wrists and F1~F6 at left/right feet) and vital signs were measured at rest, immediately after the treadmill exercise test, and at later recovery times(10min, 20min, 30min, 60min, 120min after the exercise test). The calculated Ryodoraku scores (RSs) were analyzed using repeated ANOVA test. Results: The RSs in the wrist Ryodoraku points were significantly increased immediately after the exercise (p<.05) and at 10min recovery time (p<.01), and no significant differences were found during the rest of the experimental sets. To the contrary, the RSs in the feet Ryodoraku points showed less difference throughout all the measurement time. Conclusions: The Ryodoraku characteristics change more sensitively in the wrists than in the feet in accordance with the previously reported sweat gland responses of the treadmill exercise. This is the first feasibility study to observe the change of Ryodoraku characteristics caused by treadmill exercise, and it shows the Ryodoraku characteristics are in accordance with known ANS responses.

• 대한한의학회지
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• 제21권1호
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• pp.62-67
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• 2000

Background and Purpose: Sybsun-points are located at the tips of all fingers, 0.1chon from the finger nails, totaling 10 points on both hands. These points have been used for emergency care, fainting, epilepsy, cerebrovascular accidents, hypertension, unconsciousness, high fever etc. The most common technique is bleeding with a needle at these points. Hypertension and fever are the main factors for stroke patients’progress. We investigated whether venesection at Sybsun-points has effects on blood pressure and body temperature in stroke patients. Materials and Methods: 79 stroke patients were enrolled in this study from 1 Jan. 1999 to 30 Sep. 1999. All of them were admitted in Kyunghee University, Hospital of Oriental Medicine. Among them, 62 patients were hypertensive people, 17 were normal. Among the hypertensive patients, 27 were stage 1,20 were stage 2, 15 were stage 3 by classification of JNC 1997. All of the hypertensive patients had been taking drugs, while the normal group did not. From 2pm to 3pm, every 30 minutes we checked patients' blood pressure and body temperature by 24ABPM and tympanic thermometer. After 30 minutes passed, we phlebotomized patients Sybsun-points with Samneung needle 2-3cc of blood. Right after the bleeding, we checked blood pressure and body temperature. After the bleeding, for the next hour and a half, we checked each patient’s blood pressure and body temperature every thirty minutes, or a total of three times. We compared the blood pressure and the body temperature before and after treatment(p<0.05). Results: 1. Venesection at Sybsun-points significantly decreased systolic blood pressure on stage 3 hypertensive patients(p<0.0l). 2. Venesection at Sybsun-points significantly decreased diastolic blood pressure on stage 3 hypertensive patients(p<0.05) 3. Venesection at Sybsun-points had no effect on the change of body temperature. Conclusions: Though further study is needed, our findings suggest that Venesection at Sybsun-points may alleviate hypertension in stroke patients.

• 대한한의학회지
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• 제20권1호
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• pp.75-83
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• 1999

To investigate the effects of negative therapy at back meridian points on blood gas components and immune functions in male college students, this study was conducted on treatment types(abdomen group and back group) at three sampling times (before, post-2 wks and post-4 wks) by using $2{\times}3$ factoral design. Blood gas $components(pH,\;PCO_2,\;PO_2,\;HCO_3^-,\;O_2SAT,\;BE)$, red blood cell, hematocrit, hemoglobin, white blood cell and subsets(neutrophil, basophil, eosinophil. lymphocyte, monocyte), total T cells, helper T cells, suppressor T cells, Th/Ts ratio, total B cells, serum immunoglobulin levels (IgG, IgA, IgM, IgD, IgE), Cytokines(Interlukin$-1{\beta}$, -2, -4, 2 receptor, -6 and ${\gamma}$-interferon), NK cells were measured. Collected with data were analyzed statistically by repealed measured ANOVA. The pattern of change between two groups for hematocrit, hemoglobin, suppressor T cells, interleukin-6, ${\gamma}-interferon$, NK cells at post-2 weeks and BE, lymphocyte, basophil at post-4 weeks was significantly different(p<0.05) And also the pattern of change over time for ${HCO_3}^-$(2 wks vs 4 wks), WBC, neutrophil, lymphocyte(0 wks vs 2 wks and 2 wks vs 4 wks) was significantly different(p<0.05). In summary, these data suggest that negative therapy at back meridian points had an effect on blood gas components and immune functions in male college students because practicing negative therapy at back meridian points was not associated with changes of all blood gas components and immune factors but associated with changes of BE, hematocrit, hemoglobin, WBC. neutrophil, lymphocyte, interleukin-6. ${\gamma}-interferon$, NK cells.

• 한국기후변화학회지
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• 제5권3호
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• pp.231-248
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• 2014

The goal of this research is to develop an evaluation method applying 'Green Management Index' introduced by Korean government to assess overall Green management level of the industrial sector. The method can help to grasp the present condition of Green management in Korea and analyze changes in trend. For this research, business types are classified into 8 categories and each evaluation method is developed according to each category. Green management evaluation was conducted in 2013, targeting 513 enterprises and the result was analyzed comparing that of 2011 to understand changes in trend. The evaluation shows that 1) 'strategy and system' section is tentatively vulnerable than other sections, 2) industry with higher sensitivity towards regulations has higher score, 3) there is a significant gap conducting green management between conglomerates and SMEs especially in 'system' section. The total score was elevated by 3 points compared to 2011. It is considered that the elevation of score was attributed to tightened regulations such as Target Management Scheme. Controlled Entities scored 4 points higher and 'GHG and environmental pollution' section increased by 10 points. Also, there is a wide disparity in green management evaluation between controlled entities and non-controlled entities from 5 points in 2011 to 10 points in 2013.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.131.4-131
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• 2001

A lot of path planning algorithms have been developed to find the collision-free path with minimum cost. But most of them require complicated computations. In this paper, a thinning method, which is one of the image processing schemes, was adopted to simplify the path planning procedure. In addition, critical points are used to find the shortest-distance path among all possible paths from the start to the goal point. Since the critical points contain the information on the neighboring paths, a new path can be quickly obtained on the map even when the start and goal points change. To investigate the validity of the proposed algorithm, various simulations have been performed for the environment where the obstacles with arbitrary shapes exist. It is shown that the optimal paths can be found with relative easiness.

• 한국지리정보학회지
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• 제21권2호
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• pp.24-33
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• 2018

무인항공사진측량(UAV Photogrammetry)의 대표적인 성과물인 DSM(Digital Surface Model)과 정사영상은 고품질 공간정보 데이터로써 최근 공간정보산업 여러 분야에서 다양하게 활용되고 있다. 하지만 무인항공사진측량은 무인항공기체의 촬영고도, 촬영 카메라의 캘리브레이션, 촬영 당시의 기상조건, 기체에 사용된 GPS/IMU의 성능, 지상기준점의 개수 등 여러 가지 요인으로 인해 성과물의 품질이 저하되는 문제점을 가지고 있다. 이에 본 연구에서는 지상기준점 개수 변화에 따른 무인항공사진측량 성과물의 위치정확도를 분석하고자 하였다. 실험에 사용한 기체는 고정익 기체이며, 촬영고도는 130m와 260m로 설정하였다. 사용한 지상기준점은 총 9개이며 각각 9, 8, 5, 4개를 사용하였다. 검사점은 연구 대상지에 골고루 분포된 총 10개의 검사점을 사용하였으며, RMSE 분석방법을 사용하여, 정사영상에서는 XY RMSE를 DSM에서는 Z RMSE를 비교 분석하였다. 또한, 정사영상의 해상도가 평면위치 정확도 검증시 작업자의 판단에 영향을 미친다고 판단하여 Siemens star 타겟을 이용하여 시각적해상도를 분석하였다. 분석결과, 지상기준점의 개수가 달라지는 경우 평면위치 정확도의 변화량보다 수직위치 정확도의 변화량이 더 큰 결과를 나타내었으며 촬영고도가 높을수록 지상기준점의 개수의 변화가 위치 정확도에 미치는 영향이 큰 결과를 나타내었다.

• 대한한의학회지
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• 제36권3호
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• pp.35-52
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• 2015

Objectives: The objective of this study was to investigate the effects of smoking on the skin bio-electrical capacitance at twelve source points. Methods: Twenty healthy male subjects were assigned to smoking and sham-smoking by a random cross-over design. Skin bio-electrical capacitance was measured at twelve source points for 10 minutes before and after smoking. The change of skin bio-electrical capacitance was analysed. Results: 1. The skin bio-electrical capacitance at LU9, PC7 and LR3 was significantly increased after smoking. 2. In the smoking group, the skin bio-electrical capacitance at the source points of Hand Yin meridians significantly increased compared to that of Foot Yin and Hand Yang meridians. Conclusions: Smoking significantly increased the skin bio-electrical capacitance at the source points of Lung, Pericardium and Liver meridians. Hand Yin meridians appear to be more vulnerable to smoking than other meridians.