신경회로망을 이용한 이면비드 폭 예측에 관한 연구

정재원,김일수,박창언,김학형,서주환,김인주,심지연 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

The development of robotic welding process is a very complex assignment because the system is affected by a number of process parameters which are very difficult to determine or predict in practice. The full automation welding has not yet been achieved partly because the mathematical model for the process parameters of a given welding task is not fully understood and quantified. Several mathematical models to control welding quality, Productivity, micro structure and weld properties in arc welding processed have been studied. However, it is not an easy task to apply them to the various practical situations because the relationship between the process parameters and the bead geometry is non-linear and also they are usually dependent on specific experimental result. Practically, it is difficult, but important to know how to establish a mathematical model that can predict the result of the actual welding process and how to select the optimum welding condition under a certain constraint. In this paper, an attempt has been made to develop an neural network model to predict the back-bead width as a function of key process parameters in the GMA (Gas Metal Arc) welding and to compare the developed models with the experimental results

인삼첨가 Long Life면의 조직감과 관능적 특성

정재홍,심창주,신영,권효진,이규희,오만진 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.5

인삼이 밀가루의 아밀로그래프에 의한 호화 성질과 파리노그래프에 의한 반죽 성질에 미치는 영향을 조사하였다. 인삼첨가 LL면의 조직감과 관능적 특성에 미치는 영향을 분석하기 위하여 밀가루에 대하여 인삼을 5.0∼10% 첨가하여 LL면을 제조한 뒤 면의 조직 특성 분석 및 조리시험을 하고 관능검사를 하였다. 인삼을 첨가하면 아밀로그래프의 호화개시 온도를 3.1℃ 지연시켰으며, 최고 점도를 40B.U 감소시켰다. 파리노그래프의 흡수율은 1.2% 증가하였으며, 반죽의 안정도는 인삼의 첨가로 2.0분 길게 측정되었다. Hunter L값은 인삼 첨가량이 증가할수록 낮아졌으며, Hunter a, b값은 반대로 측정되었다. 인삼첨가 LL면의 층밀림 압출력은 첨가량의 증가에 따라 높아져 10.0%의 첨가는 대조구 18.65(㎏f)보다 2.3(㎏f) 높은 23.95(㎏f)로 측정되었으며, 경도도 대조구보다 5.4(㎏f) 높게 측정되었다. 인삼첨가 LL면의 무게 증가는 인삼의 첨가량이 증가할 때 다소 높게 나타났으나. 부피 증가는 오히려 높게 나타나 조직이 다소 치밀한 것으로 나타났다 용출량은 인삼량의 증가에 따라 약간 감소하였다. 미생물은 인삼의 첨가량이 증가할수록 줄어들어서 장기 저장이 가능하였다. 관능 검사 결과는 인삼첨가 LL면이 4.2 및 4.0으로 비교적 좋은 점수를 얻었다. 이같이 LL면 제조시 인삼 첨가량은 7.0%의 수준이 효과가 컸다. The influence of ginseng on the paste or gelatinization properties by amylograph and mixing properties by farinograph of wheat flour, and on quality properties, color, cooking quality, textural and sensory properties, and reducing microbial population of LL (Long Life) noodles was studied. The contents of ginseng used were from 5% to 10% based on flour weight. The viscosity property of wheat flour with ginseng was increased the initial pasting temperature but the amylograph peak viscosity were decreased in vice versa. The farinograph absorption, stability and breakdown were increased by ginseng. The whiteness of LL noodles manufactured with ginseng was lower than that of control. The shear extrusion force and hardness of LL noodles manufactured with ginseng were shown much higher value than those of control. At cooking quality examination of LL noodles manufactured with ginseng, weight of cooked LL noodles was decreased but volume was appeared in vice versa. Extraction amounts of LL noodles manufactured with ginseng during cooking were much smaller than those of control. Total counts of microorganism of LL noodles manufactured with ginseng were decreased during storage at 30℃. Sensory properties of cooked LL noodles which was manufactured with ginseng showed quite acceptable. Based on the cooking and sensory evaluation test, addition of 7.0% ginseng to wheat flour may be suitable for processing LL noodles.

열전도 개념 습득을 위한 실험 장치의 개발과 적용

심재성,정기주,김용복 공주대학교 사범대학 과학교육연구소 2000 과학교육연구 Vol.31 No.1

금속 막대를 따라 전달되는 열에 의한 온도 변화를 측정할 수 있는 간단한 장치를 제작하고 금속 막대의 한 쪽 끝에 주기적으로 열을 가하면서 막대의 각 지점에서 시간에 따른 온도 분포를 측정하였다. 그 결과 주기 함수적으로 변하는 열파를 확인할 수 있었으며, 이로부터 구산 구리와 알루미늄의 열확산율은 표준 확산율과 비교할 때 6% 정도의 오차 범위 내에서 정확하였다. We make a simple instrument that detects the change of temperature through the metal bar when its end is periodically heated. Using the apparatus, the periodical thermal waves could be determined through the temperature changes by time measured at each point. And the experimental result for the thermal diffusibility of each material could be determined within 6% range of error when comparing with the normal thermal diffusibility of those materials which were calculated by substituting their figures of density and specific heat.

단일부위 경부 창상에 의한 다발성 뇌신경 손상 -증례 보고

박정미,김성훈,심재호 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.3

열린교실에서 CAI프로그램의 적용

이재인,심정용 晋州敎育大學校 初等敎育硏究所 1997 初等敎育硏究 Vol.7 No.-

민군갈등의 원인과 관리 방안에 관한 연구

김재관,심재정 원광대학교 대학원 2007 論文集 Vol.39 No.-

With the recent expansion of local governance and the accompanying increase of awareness on the part of people of their rights, we have witnessed a growing number of incidences of conflicts between local military units on the one hand and the local governments and residents on the other about the government's defense policies. These civil-military conflicts are obstructing smooth implementation of defense policies and thus posing a threat to the national security. An effective management of these conflicts is therefore urgently needed. This study was conducted to examine the essence and the causes of civil-military conflicts and to find ways of effectively managing them. The study shows that civil-military conflicts exhibit characteristics particular to those involving the military, in addition to characteristics normally found in other conflicts on government policies or public conflicts. The study classifies the causes of civil-military conflics into structural, behavioral, and environmental. Structural causes include differences in goals, increasing mutual dependence, competition for limited resources, and lack of preparation for decision-making and policy execution. Behavioral causes include differences in various groups' intentions and perceptions, desire for quick results, and selfishness on the part of groups or local districts. Finally, environmental causes include organizational culture of the military, expansion of local governance, and change in our society's value systems. To manage these causes for conflicts, we must put in place a system of managing civil-military conflicts, seek legal and systematic measures to alleviate those causes, and promote trust-building activities on the part of military units in relation to the local societies.

환삼덩굴 잎과 줄기의 화학성분

허재연,정창호,심기환 경상대학교 농업생명과학연구원 2003 농업생명과학연구 Vol.37 No.1

기능성 식품재료로서 환삼덩굴의 줄기와 잎의 이용성을 향상시킬 목적으로 암, 수로 구분하여 화학성분을 분석하였다. 일반성분 중 가용성 무질소물과 조단백질 함량은 잎에서 높게 나타났으며, 수분과 조섬유는 줄기에서 높게 나타났고, 줄기와 잎의 주요 무기성분은 K, Ca, P 및 Mg으로 나타났다. 유리당을 분석한 결과 숫잎과 암잎에서 fructose는 각각 0.16%와 0.10%로 나타났으며, 숫줄기와 암줄기에서 sucrose는 각각 0.37%와 0.24%로 나타났다. 비휘발성 유기산을 분석한 결과 acetic acid가 잎(4.99 mg%와 3.07 mg%)과 줄기 (3.18 mg%와 2.25 mg%)에서 가장 많이 함유되어 있었으며, lactic acid, succinic acid 및 formic acid 순으로 함유되어 있었다. 잎과 줄기의 아미노산 조성은 각각 다르게 나타났지만 잎과 줄기의 주된 아미노산은 aspartic acid, glutamic acid, isoleucine 및 lysine으로 나타났다. 잎과 줄기의 주요 지방산은 linoleic acid와 palmitic acid 였다. To study the potential of the Humulus japonicus leaves and stalks as materials for functional food, chemical components of the male and female plants were analyzed. Among general components of leaves and stalks, contents of nitrogen free extract and crude protein were higher in leaves than in stalks, whole contents of moisture and crude fiber were higher in stalks than in leaves. The major minerals contained were K, Ca, P and Mg. Among free sugars, frutose(0.16% and 0.10%) and sucrose(0.37% and 0.24%) were the highest in leaves and stalks of male and female plants, respectively. Of non-volatile organic acids assayed acetic acid was the most abundant in both leaves(4.99 mg% and 3.07 mg%) and stalks(3.18 mg% and 2.25 mg%), followed by lactic acid, succinic acid and formic acid. The amino acid compositions of leaves and stalks were different each other and aspartic acid, glutamic acid, isoleucine and lysine were the major amino acids in both leaves and stalks. Major fatty acid in leaves and stalk were linoleic acid and palmitic acid.

큰 파워 트레이닝이 Golf Iron Shot의 향상에 미치는 영향

최재원,설정덕,심재영 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study is to measure the improvement of Head speed, Ball carry, Club path, Club face, Impact point, Tempo time in golf swing according to muscle power training. Ten students who specialize in golf participate in this study. They are divided in this study; One group (P.T.G) Consists of 5 students who have been trained by muscle power for 12 weeks and the other group (N.P.T.G) is used for contrast. The results compared and analyzed between two group is this; 1. Head speed In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, p<0.05. In case of group who are trained by muscle power, head speed is significantly improved. But N.P.T.G has showed significant difference. 2. Ball carry In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, P<0.05. In case of group who are trained by muscle power, Ball carry is significantly improved. Brief to say, P.T.G has showed improvement in contrast to N.P.T.G. 3. Club path, Impact point In the experiments of club and impact point, two group (P.T.G and N.P.T.G) have not showed significant difference after 6 weeks and 12 weeks. 4. Club face In case of inter group experiments, two groups have not showed significant difference after 6 weeks, but they have showed significant difference after 12 weeks. 5. Tempo time In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, P<0.05. In case of group, two group have not showed significant difference after 6 weeks and 12 weeks.

쌍태임신중 일측태아 사망 5 예에 대한 임상적 고찰

신정옥,심일구,이항재,김희범 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

Objective : Our purpose of this study was to evaluated the incidence of twin pregnancy with one fetal demise, predisposing factors and the maternal complications and perinatal outcomes. Patients : From January 1993 to December 1997, 5 twin pregnancy with single fetal demise after 28 weeks gestation by gestational age were observed in Soonchunhyang Kumi Hospital. Results : 1. The incidence of one fetal demise was 3.01% in twin pregnancy. 2. Maternal disseminated intravascular coagulation has not been demonstrated. 3. The predisposing factors of twin pregnancy with single fetal demise are umbilical cord torsion (40%), congenital anomaly(20%) and unknown(40%). 4. According to chorionicity, it seems that the perinatal mortality rate of monochorionic group was higher than dichorionic. Conclusion : This study suggests that monochorionic placentation is associated with increased risks of twin pregnancy with single fetal demise. But it may be partially explained due to small numbers of cases in this study.

비파괴 와류센서를 이용한 아연도금강선의 아연손실량 검출

金成德,沈在明,鄭才基 한밭대학교 산업과학기술연구소 1995 논문집 Vol.3 No.-

Some theoretical and experimental properties in NDT(Nondestructive Testing) eddy current sensors to detect zinc loss of the galvanized steel wires are investigated in this paper. When a conducting material is inserted into a Solenoid coil, magnetic flux varies with the conductivity, permeability and fill factor for the sample. Magnetic flux variation can change the impedance of the coil sensor. Through analyzing magnetic flux penetration effect, it can be verified that, for a radio frequency, most of the impedance deviation may affect on the surface condition of samples. For several galvanized steel wires, impedance performances when varying source frequency are tested and analyzed. As a result, it can be shown that the NDT eddy current sensor at a high frequency excitation is suitable to detect the loss of zinc in steel wires.