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An Artificial Neural Network Model For Learning Symbolic Information
Kim, Lark Sang 淸州大學校 産業經營硏究所 1997 産業經營硏究 Vol.20 No.2
This paper presents a neural network architecture for generalization of symbolic information A neural network is constructed for encoding and learning various representations held by a semantic network The network structure suggested is different from the conventional multilayer neural networks used for pattern classification purposes. The network has two different types of hidden units one called as relational units, and the other representation units. The networks similar to this architecture was proposed by (Elman, 1990) and (Jordan, 1986) However, these networks was focused on classification and function interpolation purposes
柳根燮,金洛相 慶北大學校 1983 論文集 Vol.36 No.-
The mluberry (Morus alba L.) Saplings were transplanted between 11-15, November in 1981, polyethlene film was mulched on the mulberry field between 8-15, April in 1982, and the effect of soil temperature, soil water content and growth of mulberry branches were investigated. The results are follows; 1. In the early period of mulberry growth, 5.1℃ of soil temperature, 3.8℃ of the average temperature of 25, April, and 3.1% of soil water content were higher in the polyethylene mulching than in the control (bare soil). 2. The drought injury in Daegu district would be happened in May of ony year because of a little precipitation and a lot of evaporation. 3. The length of mulberry branches were grown by 2-5 times in the polyethylene mulching as compared with the control.
몬테카를로 시뮬레이션에 의한 납과 비스무트 흡수율 분석
김갑중,김낙상,유세종,이원정,김정호,홍성일,전민철,Kim, Gap-Jung,Kim, Nak-Sang,Yoo, Se-Jong,Lee, Won-Jeong,Kim, Jeong-Ho,Hong, Seong-Il,Jeon, Min-Cheol 한국방사선학회 2022 한국방사선학회 논문지 Vol.16 No.4
의료현장에서는 방사선으로부터 인체를 보호하기 위하여 납 앞치마를 사용한다. 하지만 납은 중금속으로 인체 및 환경에 유해성을 나타내고 있어 다양한 차폐체 개발이 진행되고 있다. 본 연구에서는 납과 원자번호가 비슷한 비스무트를 새로운 소재로 설정하고 같은 에너지 영역에서 두께에 따른 흡수율을 몬테카를로(Monte Carlo) 시뮬레이션을 통해 분석하였다. 납 차폐체 두께가 0.25 mm인 경우 비스무트 두께가 0.3 mm, 납 0.50 mm인 경우 비스무트 0.60 mm, 납 0.75 mm인 경우 비스무트 0.90 mm에서 유사한 경향성을 확인할 수 있었다. 따라서 차폐체의 소재로 납을 비스무트로 대체하여 사용하는 데는 무리가 없을 것으로 사료된다. In the medical field, lead aprons are used to protect the human body from radiation. However, lead is a heavy metal that is harmful to the human body and the environment, so various shield are being developed. In this study, bismuth, which has a similar atomic number to lead, was set as a new material and the absorption rate according to thickness in the same energy region was compared and evaluated through Monte Carlo simulation. The same tendency was confirmed when the thickness of the lead shield was 0.25 mm, the thickness of the bismuth was 0.3 mm, when the lead was 0.50 mm, the bismuth was 0.60 mm, and when the lead was 0.75 mm, the bismuth was 0.90 mm. Therefore, it is reasonable to replace lead with bismuth in the shield material.
WRIST TRUE PA와 LATERAL 검사 시 경사보조도구의 유용성 분석
전상현,김갑중,김낙상,서선열,최선욱,전민철 한국융합학회 2020 한국융합학회논문지 Vol.11 No.2
The purpose of this paper is to evaluate the image of the Styrofoam Wedge that can minimize the position change by supporting the wrist during the True PA and lateral examination of the wrist. In 50 people, the gap between the distal radius joint facet and the wrist bone was measured after the wrist True PA and lateral images were obtained using a general examination(vertical), tube angle(vertical:10°, lateral:20°) and Styrofoam Wedge(vertical). When joint spacing was measured in the True PA and lateral images of the wrist, general examination(5.54mm, 9.42mm), tube angle(2.05mm, 5.07mm) and Styrofoam Wedge(1.79mm, 5.46mm) were shown to be small. The smaller the joint spacing, the easier it is to observe that is open. Therefore, True PA and lateral imaging of the wrist Styrofoam Wedge can reduce the distortion of the image and thus acquire images of high diagnostic value. In addition, it may be possible to reduce the deviation caused by the change of patient's position during re-projection. 본 논문은 손목 후전, 측방향 검사 시 손목을 지지하여 자세 변동을 최소화 시킬 수 있는 경사보조도구에 대해 영상 평가하고자 한다. 50명을 대상으로 일반적 검사(수직), 튜브 각도(후전방향:10°, 측방향:20°)와 경사보조도구(수직)를 이용한 손목 후전, 측방향 영상을 획득하여 먼쪽 노뼈 관절면과 손목 뼈와의 간격을 측정하였다. 손목의 후전, 측방향 영상에서 관절 간격을 측정 하였을때 일반적 검사(5.54mm, 9.42mm), 튜브 각도(2.05mm, 5.07mm) 그리고 경사보조도구(1.79mm, 5.46mm) 순으로 관절 간격이 작게 나타났다. 관절 간격이 작을수록 열려진 관찰이 용이하다. 따라서 경사보조도구를 이용한 손목의 후전, 측방향 촬영은 영상의 왜곡을 감소시켜 진단적 가치가 높은 영상을 획득할 수 있고, 재촬영 시 환자 자세 변동에 따라 발생할 수 있는 편차를 감소시킬 수 있을 것으로 사료된다.
뽕나무 接木苗에 關한 硏究 : Ⅲ.추기 굴취적기에 관하여 Ⅲ.Optimum Season for Mulberry Graftage Harvesting in Autumn
李梡周,崔營哲,金光泳,金洛相,金振吉,金漢俊,柳甲道,李種漢,林炳和,金基錫 한국잠사학회 1989 한국잠사곤충학회지 Vol.31 No.1
Experiments were conducted to investigate the optimum season for mulberry graftages harvesting before the period of natural leaf fall in autumn. Harvesting season was examined at 10 days intervals from September 30 to November 20, 1985 and 1986, at nine sites in eight provinces. The results were: 1. Diameter of graftages increased until October 30. 2. Early harvest of graftages decreased survived rate, number of shoots, and total shoot length the next spring. The October 30 harvest yielded the best growth the following spring. 3. Harvests after October 20 allowed for good survial of mulberry shoots and sprouting the following spring. 4. Total N and P in plants increased with late harvests, K decreased, and Ca content was not affected by harvest date. 5. Total N, P, and Ca were higher in stem cortex than root bark, while K appeared to be equally distributed between root and shoot bark.
체내대사를 이용한 핵의학적 검사의 선량률 저감에 관한 연구
강용길,나수경,홍진웅,이귀원,김낙상,Kang, Yong-Gil,Na, Soo-Kyung,Hong, Jin-Woong,Lee, Gui-Won,Kim, Nak-Sang 대한디지털의료영상학회 2012 대한디지털의료영상학회논문지 Vol.14 No.2
The purpose of this study was administered to the body for examination and treatment, high-energy radioactive isotope(F-18, I-131) in vitro discharge experiments. Increasing exposed dose of radiation to health professionals is caused by the increase of PET/CT use and a radioactive isotope. Therefore, the high-energy isotope F-18 and I-131 after administration about using Metabolite excretion was studied. As a results of this study, patients had plenty of fluids for testing and treatment alone administered radiopharmaceuticals can be more than twice as fast excretion induced emissions. Also was able to get a better image space to reduce the dose rate.
김갑중,김정호,배석환,김낙상,서선열 한국융합학회 2019 한국융합학회논문지 Vol.10 No.7
Depending on the location of the lung tumor, the choice of treatment technique should be considered when treating the Cyberknife. The 4DCT images of 18 lung cancer patients were analyzed, and location error values were extracted through application program. The evaluation result was lower than the average position error only in the upper and the inner. These results suggest that the Vertebral tracking technique is effective when it is close to the pulmonary attachment or near the vertebral body, and the Synchrony technique is effective at other positions. In the future, we would like to study cyber knife treatment technique according to the position of the tumor as well as the volume of the lung and the respiratory cycle.
추잠기(秋蠶期)에 있어서 농약(農藥), 담배 및 매연(煤煙)이 잠작(蠶作)에 미치는 영향(影響)
손해용 ( Hae Ryong Sohn ),김낙상 ( Rak Sang Kim ),김윤식 ( Yun Sik Kim ) 한국잠사학회 1976 한국잠사곤충학회지 Vol.18 No.1
1975년 추잠기에 양잠공해중 크게 영향을 미치는 농약, 담배, 매연의 해를 조사 분석하여 다음과 같은 결과를 얻었다. 1. 양잠공해의 산견피해율은 농약, 담배, 매연 각각 1.4, 0.6, 0.1%이었다. 2. 농약의 피해율은 주로 수도농약으로 49.4%를 점하고 과수, 채소농약은 각각 21.2, 12.3%이었다. 3. 담배 공해는 뽕밭 근처의 담배밭, 뽕밭 근처의 담배건조장, 잠실근처의 담배건조장, 잠실근처의 담배밭 순으로 점멸하였으며 피해농가비율은 각각 60, 18, 14, 8%이었다. 4. 공장 매연의 해는 주로 시멘트공장의 석분 해이었다. These surveys were carried out to investigate of damage of agricultural chemicals, tabacco, and factory smoke on silkworm rearing Autumn in 1975 1. Damaging rate in chemicals, tabacco and factory smoke was 1.4, 0.6 and 0.1 percent each other. 2. In damage by agricultural chemicals, it appeared to be chemicals for rice (49.4%) orchard (21.2%) and vegetable (12.3%) in order. 3. Status of damaging rate in tabacco showed 60 and 18 percent in tabacco field and tobacco drying place near mulberry field, and showed 14 and 8 percent in tabacco drying place and tabacco field near rearing house. 4. The damage of factory smoke is largely stone powder of cement.
양전자방출전산화단층촬영 검사에서 유방 질환 환자를 검사하기 위해 유리섬유강화플라스틱을 이용한 유방 틀의 제작 및 유용성
김갑중,전민철,한만석,서선열,김낙상,배원규 한국융합학회 2017 한국융합학회논문지 Vol.8 No.9
유방검사에서 영상의 진단 가치를 높일 수 있는 유방틀을 제작하여 유용성을 평가하고자 한다. 유리섬유강화플라스틱을 이용해서 유방틀을 제작하였다. 그리고 방사능계수율과 획득된 영상을 비교하였다. 유방틀의 평가에서 왼쪽과 오른쪽이 1 μCi 당 counts가 각각 185 counts, 189 counts이다. 그리고 복와위 자세에서 획득된 영상은 원형에 가깝게 나타났다. 유방틀을 이용함으로써 진단 가치를 높일 수 있어 유방촬영 검사를 하는데 있어 유용할 것으로 사료된다. The purpose of this study is to evaluate the breast tool to improve the diagnostic value of the image in the breast examination. Breast tool was made of using FRP. And then it was compared by radioactivity counting rate and image. In the evaluation of the Breast tool, the left and right counts per 1 μCi are 185 counts and 189 counts, respectively. The image obtained in the prone position was close to the circle. To increase diagnostic value of image, it is considered to use Breast-tool in the breast examination.