맥진기(脈診機) 개발을 위한 평맥(平脈) 혈류 속도 혈류량 분석

안원식 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6

貯水池에 의한 洪水調節方法의 解析에 關한 硏究

安元植 수원대학교 산업기술연구소 1986 산업기술연구소논문집 Vol.1 No.-

Dam에 衣한 洪水 調節 計劃은 各 河川에 있어 洪水 防禦의 基本的 方針을 達成하기 위한 하나의 手段으로서 策定되나 具體的인 操作方法을 檢討함에 있어서는 旣往의 많은 實績 洪水波形에 關한 情報를 綜合的 立場에서 分析하고 流域의 洪水 防禦 計劃中에서 몇個의 洪水 調節方式의 代替案을 假定하고 洪水 調節을 試行 運營하는 案에서 가장 效果的인 貯水地의 操作方法과 이것에 必要한 貯水地容量이 決定된다는 順序에 依하는 것이 日般的이다. 그런데 貯水池의 實際操作에서는 이와같이 策定計劃된 貯水量을 計劃 策定時와 比較하면 極端的으로 限定된 情報를 써서 또한 限定된 時間中에 實施하여야 한다. 卽 操作上 가장 基本的인 情報라 할 수 있는 貯水池 流入量을 生覺해 보아도 計劃 段階에서 流入 水文 曲線이라는 形의 眞價를 附與한 것에 反하여 操作 段階에서는 ① 貯水池 上流의 河川 水位로부터 貯水池 流入量을 換算한다. ② 一定 時間內 貯溜量의 變化量을 累加 放流量으로부터 貯水池 流入量을 換算한다는 方法中 어느 方法인가에 依해 間接的으로 流入量을 把握하게 된다. 이와같이 貯水池의 計劃 策定 段階에서 眞價로 取扱되어온 流入量이라는 貯水池 操作上의 基本量이 實際 操作 段階에서는 間接情報로부터 換算되는 流入量에 依存하게 되는데 根本的인 差異가 있으며 이것이 貯水池 操作의 困難性의 原因이 되고 있다. 이것에 關하여 本 硏究에서 如何히 貯水池 操作을 할 것인가에 對하여 根本的인 調節 方法을 檢討하기로 한다.

遊水部를 갖는 海岸 構造物의 效課的 消波의 實驗 硏究와 解析

安元植 수원대학교 산업기술연구소 1992 산업기술연구소논문집 Vol.7 No.-

Because we had to decrease the energy of waves that transmit from the Open-Sea by various forms, We tested with making a model of obesorbed-waves-block. Brickwater was made of concrete, Acryl. and according to the vertical, Wave-height that transmits by various kind of angels, We piled up the multistage. We judged experimental datum by the amount of crossing-waves and led to a effective result from considering Water-stagnation shape and size. Besides, on the basis of theory of tiny-wave-motion and without fixing about various kinds of wave-height and Wave-direction by theorical interpretation.

貯溜函數法의 媒介變數 改善方案 硏究 : 한강을 대상으로

安元植 수원대학교 산업기술연구소 1998 산업기술연구소논문집 Vol.13 No.-

This study is an early flood warning system. The calculation method of drainage basin run-off in this study is a storage function method, the civil institute of Japan developed to associate with Kinematic wave. The conclusion of this study is same as following statements. An estimated hydrologic curve has been so similar to actual hydrologic curve. There are 3 Parameters in Storage function method, but this study is possible to estimate a run-off to use just two Parameters, k₁& k₂, so this model is more effective than Storage function method. I couldn't clearly confirm the effect of this model because of limited Discharge data but I consider this model is so useful in flood warning system. I think this flood warning system is going to be apply in case of small drainage basin, which has good discharge data after to calculate parameters k₁, k₂using this model.

RELAX Algorithm을 이용한 수자원의 순별 최적운영방안

안원식,김태균 수원대학교 산업기술연구소 1993 산업기술연구소논문집 Vol.8 No.-

Since the 1980's, various optimal distribution model have been developed for surface water supply system. The application of optimal distribution model for resources, however, only started recently. In this study, Network Flow Programming model which is considered real world and operation rule is used to optimize the distribution for each 10 days. The Dongjin Agricultural Unit, which includes Dongjin River Basin, is selected for the formulation of the present optimal operation model. The model is apllied for the duration of 1988.1-1992.9 and compared with real operation. The RELAX Alogotithm is used to solve Network Flow Programming, which can be converged easily. The result showed that the hydropower generation was significantly incresed, and that all the agricultural demands were satisfied for the duration of analysis, which was not the case for the past real system operation.

확률강우량 산정방법에의 신뢰도 분석

안원식 수원대학교 산업기술연구소 2001 산업기술연구소논문집 Vol.16 No.-

A risk analysis is conducted on the process in estimating frequency rainfalls used to determine the design flood. Uncertainties in sampling the rainfall data series, and that on the method used to determine the frequency rainfall are analyzed using the Monte Carlo sampling technique. Rainfall data of 39yr(39yr:1961-1999) on the Seoul station are collected and utilized to do the analysis. The resulting frequency rainfalls of different duration and return period are used to determine the probability distribution of the frequency rainfall. It shows that the resulting rainfall distribution fairly represent the normal distribution. So, the normal distribution can be used in determining the frequency rainfall having the specific significant level.

유출곡선지수에 따른 홍수량 민감도 분석 : 黑川流域을 中心으로

안원식 水原大學校 2004 論文集 Vol.22 No.-

The present time, there is used SCS curve number method to calculate effective rainfall and is necessary to choose AMC-condition in calculating design floods. By standard real runoff records AMC-Ⅱ condition is computed smaller CN-values than ideal CN-values and AMC-Ⅲ condition is computed larger CN-values than ideal CN-values. Therefore, there is able to applicate CN-37 or CN-55 to calculate optical effective rainfall as choosing AMC condition. This study analysis of the peak flow sensibility according to curve number used to this four way. To this analysis, it applied that time distribution model is Huff method, computing effective rainfall method is SCS, computing flood discharge method is SCS, Snyder and Clark using HEC-1, WMS program estimated flood discharge and geographic parameter.

洪水時 水位-流量 曲線式 에 關한 硏究

安元植 水原大學校 1984 論文集 Vol.2 No.-

확률강우량의 상승과 감소에 관련하여 : 홍수량과 홍수위에 대한 영향 분석

안원식 수원대학교 산업기술연구소 2003 산업기술연구소논문집 Vol.18 No.-

Abnormal flood discharge has broken out in all the world frequently Ahn etc(2001) account the influence of heavy storm in Korea, the frequency analyses for annual maximum rain fall sequence in 12 rainfall gauge station are carried out. This study analysed that abnormal rainfall has a effect flood discharge, flood stage. To analyses effect of abnormal rainfall, this study put in frequency analyses for annual maximum rainfall sequence of pohang station. In order to analyze the temporal change, the rainfall quantile of a station is estimated by the 30-yr data period being moved from 1961 to 2000 with l-yr lag. This way used SO HUEN river's Flood discharge and flood stage on the same principle. To this analyses, it applied that time distribution model is Mononobe method, computing effective rainfall method is SCS, computing flood discharge method is SCS, Snyder and Clark and using Hec-hms, Hec-Ras Program estimated Flood discharge and flood stage. Through this analyses, flood discharge and flood stage made the same trand fluctuations an the rainfall quantil. However, that value don't get out of statistical regard level as Ahn et al(2001)'s research result.

安城川의 流量變化에 따른 水質 汚染度

安元植,梁祐碩 수원대학교 산업기술연구소 1995 산업기술연구소논문집 Vol.10 No.-

Generally, as the fluid volume increases, the degree of contamination should decreases. However in the target area of this study which involves Anseong River, as the fluid volume increases from the draught vol., degree of contamination has increased also. The results of this study has been found as the following. 1) As the fluid vol., increases from low flow vol., average flow vol., self-purification capacity of the river increases and the degree of contamination shoud decrease. But as the fluid vol. increases, we see that the degree of contamination increases prapartionately and this is assumed to be due to NPS and the phenomenon of flatation of contamination sediments on the bottom of the river. 2) We are able to determine the flow in propotion to quality of load quantity through an anniversary of analysis revealed linear relationship. 3) Using an anniversary of analysis, we were able to predict seasonal amount of floating contaminants per fluid vol. 4) Using this result, we determined the amount of diluting agent (base on the 2nd. degree of water according to Environment preservation directive) to be increasing in linear relation to the fluid vol. of the river and seasonal changes would be expected to have a similar effect.