보행 시 노인의 상체 움직임에 대한 3차원적 분석

김희수,윤희중,류지선,김태삼 한국운동역학회 2004 한국운동역학회지 Vol.14 No.3

H. S. KIM, H. J. YOON, J. S. RYU, T. S. KIM. The Three Dimensional Analysis of the Upper Body's Segments of the Elderly during Walking. Korean Journal of Sport Biomechanics, Vol. 14, No. 3, pp. 1-15, 2004. The purpose of this study was to investigate the kinematic variables of the upper part of the body for 8 elderly men during walking. For this study, kinematic data were collected using a six-camera (240Hz) Qualisys ProReflex system. The room coordinate system was right-handed and fixed in space, with righted orthogonal segment coordinate systems defined for the head, trunk, and pelvis. Based on a rigid body model, reflective marker triads were attached on the 3 segments. Three-dimensional Cartesian coordinates for each marker were determined at the time of recording using a nonlinear transformation(NLT) technique with ProReflex software (Qualisys, Inc.). Coordinate data were low-pass filtered using a fourth-order Butterworth with cutoff frequency of 6Hz. Three-dimensional angles of the head, trunk, and pelvis segment were determined using a Cardan method. On the basis of each segment angle, angle-angle plot used to estimated the movement coordinations between segments. The conclusions were as follows; (1) During the support phase of walking, the elderly people generally kept their head the flexional and abductional posture. Particularly, the elderly displayed little internal/external rotation. (2) The elderly people showed extensional and external rotation postures in the trunk movement. Particularly, It showed the change from adduction into abduction at the heel contact event of the stance phase. (3) The elderly people showed almost same pelvis movement from the flexion into extension, from the abduction into adduction, and from internal rotation into external rotation at the mid stance and toe off of the stance phase.

光陽地域 金屬鑛床에 대한 岩石學的 및 鑛物學的 硏究

金熙南,柳官善 조선대학교 기초과학연구소 1986 自然科學硏究 Vol.9 No.1

The studied area is lobated in the central part of Kwang-Yang, Chullanamdo, which is in the south west of the Gyeongsang basin, The geology consists of the Pre-Cambrian Jirisan gneiss complex as its country rock, covered with the Gyeongsang system sedimentary rock giving unconformity in the Cretaceous period, and is intruded by volcanic rocks and plutonic jgneous rocks. These deposits are fissure filling hydrothemal ore deposits which were formed through fissure with the strike N 20^˚~50^˚E and the dip 70^˚~85^˚SE in the Pre-Cambrian Jirisan gneiss complex. They consist of gold, silver, and quartz veins. Ore minerals are chalcopyrite, arsenopyrite, pyrrhotite, pyrite, galena, sphalerite, native gold, bornite, and covellite. The source rock of the ore minerals is granite porphyry, plutonic igneous rocks intruded in the late Cretaceous period. The method of study is as follows: 150 pure rock samples and 50 ore samples were picked up around the deposits and outcrops, and classified according to the distributed areas and their kinds. 80 thin sections out of 150 rock samples and 40 polished sections out of 50 ore samples were made and a modal analysis were made of them each. And 10 out of the thin sections were made chemical analysis. 5 out of the polished sections were made X-Ray diffraction analysis, which made a verification of what kind of ore minerals are contained in them. As a result of the modal analysis, the granite rocks ill the studied area are plotted by quartz monzodiorite, and have the similarity of the Bulgugsa granite rocks, and its gneiss is plotted by granodiorite and is similar to the Hongjesa granite gneiss. From the results to the Hongjesa granite gneiss but are poor in SiO_2 and rich in FeO, MgO and MnO, For this reason, it is thought that these rocks contain the minerals of the garnet group. These rocks belong to the alkali-calcic rock series in the alkali lime index composed by Peacock. By the I-S type classification by White, Chappell(1977) and Hine(1978) and by the A C F diagram and the normative’s Qu-Or-Ab triangular diagram, these rocks originated from sedimentary rocks. The Proportion of the alk:fm of the Niggli mean value is 19:46, and these rocks were possibly generated from before the Bulgugsa granite and Masan granite age. From the AMF diagram these rocks are coincident with the Gyeongsang basin trend in granite and similar to the Hyndmann trend in gneiss. In the AKF diagram and normative Or-Ab-An diagram, the rocks in the studied area are rich in albite, and compared with S.R. Nockold’s world rock mean value, they belong mostly to tonalite and diorite.

오리엔탈나리의 球根 收穫時期와 低溫處理 期間이 生育에 미치는 影響

金熙峻,金正萬,金致善,柳汀,崔泳根,文炳永 한국화훼연구회 2001 화훼연구 Vol.9 No.1

This study was carried out to determine the effect of the duration of chilling treatment and the lifting time of bulbs on growth of Lilium Oriental hybrids for product of cut flower in the type of forcing or semiforcing culture in Korea. "Casablanca", "Acapulco" and "Le Reve" in lilium Oriental hybrids were used in these experiment and carried out from 1999 to 2000 in Iksan, Korea. The bulbs for experiment were lifted on August 27, September 27 and October 27 and the all of them were chilled at 5±1℃ for 0,8,10,12 weeks. Development of the bulbs lifted on October 27 was superior than that of lifted bulbs on August 27 in the three cultivars. The bulbs lilted lately and chilled for a long time were sprouted more earlier and grown faster. In order to increase bulb sprouting until 100%, the duration of chilling treatment of bulbs was need for 12 weeks on August 27, 10 weeks on September 27 and above 8 weeks on October 27. The flowering according to the duration of chilling treatment and the lifting time of bulbs was same above. Consequently, the bulbs should be chilled at 5±1℃ for chilled for 10 weeks at late September and 8 weeks in producted bulbs at late October in earlyㆍMidseason variety fur product of cut flower hut bulbs of late variety should be chilled for 12 weeks at late September and 10 weeks at late October.

평균대 경기 시 앞 공중돌기 동작에 대한 운동학적 분석

윤희중,류지선,김동민,김영란 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2

본 연구는 평균대에서 수행되는 앞 공중돌기 동작의 효율적인 동작을 연기하는데 필요한 정보를 제공하기 위한 운동학적 요인을 살펴보는 데 있다. 연구대상은 부산동아시아 체조경기대회(1997년)평균대 종목별 결승에 참가한 한국선수 1명, 카자흐스탄 2명, 일본선수 1명을 대상으로 3차원 영상 분석을 통하여 운동학적 요인을 분석한 결과 다음과 같은 결론을 얻었다. 1. 각국면별 소요시간 도움닫기 시간은 스텝시간이 대상자별로 다르게 실시함으로서 수행시간간에 차이를 보였다. 도약 시간은 선행연구 결과에 비해 본 연구의 대상자들이 보다 짧은 시간을 나타냈으며, 체공시간은 길게 소요하고 있는 것으로 나타났다. 2. 체공 및 착자시 인체중심 높이는 선행연구된 마루 운동의 수행 결과들 보다는 다소 낮게 나타났다. 3. 도약시 인체중심 속도는 수직속도보다 수평속도가 높게 나타났다. 4. 도약 및 착지시 선정된 각 관절의 각도는 선행연구 결과들 보다 무릎각을 제외한 발목, 고관절 각도에서 적은 각도를 나타내 불안정한 착지를 수행하는 것으로 나타났다. The purpose of this study was to analyze the kinematic variable of a forward somersault motion in balance beam. Two video cameras were used for 3-dimentional analysis. The subjects were four female gymnasts who is participated in the '97 east asian game. The conclusions are follows. 1. Time of each phase The time of run-up was shown a difference between performance time as type of step patterns of each subjects. The time of support was display a more short time in the gymnasts of present study compared to gymnasts of previous study, and it was shown a long time in the flight phase. 3. The velocity of center of gravity in supports phase was shown more high levels in horizontal velocity than vertical velocity. 4. The angle of each joint in support and landing was display a low angles in ankle and hip joint angles except to knee joint angles. Therefore, it was performing a unbalanced landing.

전기비저항을 이용한 지하매설물 탐사(II) - 현장실험 중심으로

류희환,조선아,김경열,조계춘,Ryu, Hee Hwan,Cho, Seon Ah,Kim, Kyoung Yul,Cho, Gye Chun 한국터널지하공간학회 2017 한국터널지하공간학회논문집 Vol.19 No.3

관로, 전력구 등 지하매설물의 불투명한 존재여부 및 부정확한 정보로 인해 신규 지하매설물의 계획 노선, 설계, 시공에 많은 문제를 야기시키고 있다. 이에 Ryu(2015) 등은 전기장 해석을 통해 지하매설물의 크기, 위치, 방향 등을 예측할 수 있는 식을 제안하였다. 3개의 현장에 적용하여 싱크홀 존재 여부 및 크기와 지하매설물의 위치, 크기, 방향을 예측하였으며, 예측된 결과를 토대로 설계에 반영되고 후속 조치가 수행되었다. The uncertain existence and insufficient information of underground structures, such as pipe lines and cable tunnels, is causing many problems related to route plan, design, construction of new underground structures. The theoretical equations that is able to predict the location, size, and direction of underground structures through electric field analysis are suggested at the previous study (Ryu., 2015). Three field tests were performed for predicting the location, size, and direction of underground structures and the existence and size of sink-hole. Prediction results were reflected at the design and follow-up measures were performed.

디자인혁신에 있어서 유사성 판단에 관한 연구 : 의자, 시계, Facade를 중심으로 concentrated on the identity of chair, clock, Facade

한정완,차경준,오희권,류제선 한국디자인과학학회 1999 디자인과학연구 Vol.2 No.-

신제품이 개발 출시되어 크게 성장 할 수 있다는 것은 그것을 채택, 수용해 줄 수 있는 혁신층과 조기수용자 층의 소비자 구조를 가지고 있어야만 한다. 신제품 수용자의 조기 확보는 신제품 개발에 소요된 비용은 조기에 보충할 수 있고, 많은 고객을 확보하여 매출의 증대가 용이하고, 마케팅비용의 감소를 가져올 수 있으며. 시장에서 리더십을 가짐으로써 효과적 시장 진입이 되기도 한다. 이와 같이 신제품의 수용과 확산의 연구에서 혁신성이 차지하는 중요도가 매우 높기 때문에 많은 관심을 끌어 온 것이 사실이다. 그러나 이러한 혁신과 수용성 연구의 중요성에 비추어 혁신성에 대한 발견 사실의 모호성과 함께 관련변수에 관한 끊임없는 논의가 지속되어 왔고, 동시에 혁신성 연구가 지금까지 취하여 왔던 방향과 주제에 관련해서도 많은 비판이 이루어져 온 것도 사실이다. 이러한 관점에서 본 연구에서는 아직 논리적으로나 실체적으로 방법론이 확립되어 있지 않은 디자인 혁신의 개념을 새롭게 정립하고 그 특징과 요소를 분석하고 객관적인 기준으로 변한 할 수 있는 지표를 찾는다. 또한 디자인 혁신에 있어서 유사성 판단에 관한 실험을 통해 제품 집단의 유형과 기준을 명확히 파악하고 각 샘플의 공간 해석과 함께 시자극적 특성을 정량적으로 평가하는 실험적 이론으로 사용하고자 한다. 이는 디자인에 있어서의 혁신을 인지하고 각 제품 속에 속한 샘플들을 특징별로 지각하는 보다 과학적인 디자인 접근방법에 관해 새로운 방향을 모색할 수 있도록 하였다. If a new product Is devised and to be sold, it Should possess the group of people who are inclined to change and accept the product, and the group of consumers who can buy them. If you occupy the consumers to buy the products earlier, you car make up with the expenditure that you have spent to devise and make products, facilitate the raise of the sales, decrease the marketing expenditure, and have effective access to the market by going ahead of others. Like this the Innovation has great influence in the accepting and spreading of the products. However in spite of these Innovation and acceptance, there have kept the ceaseless disputes about finding the Innovation and related function, at the same time the study of innovation has been criticized about the direction and the theme we have taken until now. From this point of view, the methodology has not been established In the area of logic and its reality, and this study tries to set up the concepts and analyze the characteristic and the elements and find the standard to change those characteristics and elements in to objective standard. In addition, through the judgment of the similarity In the design innovation, it tries to identify clearly the types and the standard of the set of the products, Interpret the space of each sample, and use it as the experimental theory to evaluate the visual characteristics, Thus it can perceive innovation of the design. perceive the characteristics of the samples in each products, and find the new direction in the more scientific access to design.

Enzymatic Preparation and In Vitro Antioxidant Activities of Protein Hydrolysates from Protaetia brevitarsis Larvae

Hee-Jeong Ryu,Hyeon-Ji Song,Hyo-Seon Lee,Yeon-Seop Jung,Mi-Hee Yu,Syng-Ook Lee 한국식품영양과학회 2016 한국식품영양과학회 학술대회발표집 Vol.2016 No.10

Thermal Characterization of Individual Pixels in Microbolometer Image Sensors by Thermoreflectance Microscopy

Seon Young Ryu,Hae Young Choi,Dong Uk Kim,Geon Hee Kim,Taehyun Kim,Hee Yeoun Kim,Ki Soo Chang 대한전자공학회 2015 Journal of semiconductor technology and science Vol.15 No.5

Thermal characterization of individual pixels in microbolometer infrared image sensors is needed for optimal design and improved performance. In this work, we used thermoreflectance microscopy on uncooled microbolometer image sensors to investigate the thermal characteristics of individual pixels. Two types of microbolometer image sensors with a shared-anchor structure were fabricated and thermally characterized at various biases and vacuum levels by measuring the temperature distribution on the surface of the microbolometers. The results show that thermoreflectance microscopy can be a useful thermal characterization tool for microbolometer image sensors.

Application of engineered bacterial whole mevalonate pathway for β-carotene production in E. coli

Hee-Jung Jang,Sook-Hee Lee,Chong-Long Wang,Hee-Kyoung Ryu,Asad Ali Shah,Jong-Wook Song,Amitabha Das,Seon-Won Kim 한국생물공학회 2008 한국생물공학회 학술대회 Vol.2008 No.10

Orostachys japonicus induces apoptosis and cell cycle arrest through the mitochondria-dependent apoptotic pathway in AGS human gastric cancer cells.

Ryu, Deok-Seon,Kim, Seon-Hee,Kwon, Ji-Hae,Lee, Dong-Seok Lychnia 2014 International journal of oncology Vol.45 No.1

<P>We investigated the anticancer mechanisms of the ethylacetate (EtOAc) fraction from Orostachys japonicus in human gastric cancer (AGS) cells. Flow cytometric analysis revealed that the number of total apoptotic cells following treatment with the EtOAc fraction increased in a dose-dependent manner. In the cell cycle analyses, the EtOAc fraction increased the peak in the sub-G1, indicating apoptosis, and in the G2/M phases in a dose-dependent manner. In the RT-PCR analysis, the expression of cyclin-dependent kinase 1 (CDK 1) and cyclin B1 decreased in a dose- and time-dependent manner. The results of western blotting revealed that the protein levels of p53, cytochrome c, and cleaved caspase-3, -8 and -9 proteins increased and those of B cell lymphoma-2 (bcl-2) and pro-caspase-3, -8 and -9 proteins decreased in a dose- and time-dependent manner, whereas the levels of bcl-2-associated x protein (bax) remained unchanged. Furthermore, the changes in the levels of pro-caspase-3, -8 and -9 and cleaved caspase-3, -8 and -9 were abolished by the pan-caspase inhibitor Z-VAD-FMK. In addition, phosphorylation of p38 and JNK increased in a time-dependent manner. These results, for the first time, provide an understanding of the potential anticancer activity of the O. japonicus, which functions through the induction of apoptosis and cell cycle arrest.</P>