기능적 다리 길이 차이가 압력 중심점과 안정성 한계에 미치는 영향

조아라,손광희,이유리,하민주,민지원,구현모,Jo, A-Ra,Min, Ji-Won,Son, Kwang-Hee,Lee, Yu-Ri,Ha, Min-Ju,Koo, Hyun-Mo 대한고유수용성신경근촉진법학회 2014 PNF and Movement Vol.12 No.4

Purpose: The purpose of this study was functional leg length inequality effect on COP(Center Of Pressure) and LOS(limits Of Stability) and EMG activation. Methods: The participants were consisted of fourteen. Subjects were distributed 2 groups; control group, leg length inequality ${\leq}3mm$, n=8), experimental group(leg length inequality${\geq}10mm$, n=8). The participants were measured leg length wearing comfortable clothes through tape measure method(TMM). All subjects was measured COP(Center Of Pressure), LOS(limits of stability) using by Balance Trainer BT4(HUR, Finland). Results: The results COP was not exist statistical significant differences(p>0.05). LOS was not exist statistical significant difference(p>0.05). Conclusion: The results was not statistical significant differences COP and LOS depending on Leg Length Inequality. But between experimental group and comparison group was exist mean differences on COP, LOS(COP:Ex.>Com, LOS:Ex. <Com/excepted some data). Somewhat COP and LOS was affected on by Leg Length Inequality. Balance is affected on Leg Length Inequality partly.

동남아시아 마지막 기회의 땅, 미얀마

조아라,Jo, A-Ra 한국건설관리학회 2014 한국건설관리학회 논문집 Vol.15 No.6

다물체계 동역학을 기반으로 한 와이어로프와 조선용 블록 외판 사이의 간섭 시뮬레이션

조아라(A Ra Jo),구남국(Nam Kug Ku),차주환(Ju Hwan Cha),박광필(Kwang Phil Park),이규열(Kyu Yeul Lee) (사)한국CDE학회 2012 한국CDE학회 논문집 Vol.17 No.5

In this paper, a method for calculating the contact force and the frictional force caused by contacts between the wire rope and the rigid body is introduced based on multibody dynamics. And the method is applied to a simulation of contacts between the wire rope and the shell plate of a block that can occur during shipbuilding. The wire rope is composed of a number of lumped masses and the wire rope segments that connect the masses. After calculating the position of interference, we inserted a contact node into the wire rope. We then derived the equations of motion of the wire rope and the rigid body using augmented formulation based on multibody dynamics taking into account the constraints between the contact node and the rigid body. Using the equations, we were able to obtain the constraint force between the contact node and the rigid body, and calculate the contact force and the frictional force, based on which the position of the contact node was corrected. Finally, we applied our results to perform simulation of contacts between the wire rope and the shell plate of a block in order to verify the efficacy of the method proposed in this paper.

췌장에 발생한 콜레스테롤 육아종

정찬우 ( Chan Woo Jung ),김봉재 ( Bong Jae Kim ),박성오 ( Sung Oh Park ),조아라 ( A Ra Jo ),하종건 ( Jong Kun Ha ),박승근 ( Seung Keun Park ),김혜숙 ( Hye Sook Kim ) 대한소화기학회 2011 대한소화기학회지 Vol.58 No.6

Cholesterol granuloma is a histological term used for the description of a tissue response to a foreign body such as cholesterol crystals. Cholesterol granuloma is histologically characterized as fibrous granulation tissue containing cholesterol crystals within surrounding giant cells. Cases of cholesterol granuloma of the pancreas are very rare. We report a case of a 47-year old male who had a cholesterol granuloma of the pancreas. Abdominal CT showed 24 mm-sized cyst in the pancreas and peri-pancreatic regional mass infiltrating to the stomach. PET-CT revealed increased 18F-FDG uptake at the cyst and peri-pancreatic mass. Thus, Whipple`s operation was done. The disease was confirmed by surgical pathologic examination of the tissue. Pathologic examination of resected specimen showed numerous cholesterol crystals surrounded by multinucleated foreign body giant cells. We report on this case and give a brief review of the literature. (Korean J Gastroenterol 2011;58:353-356)

연구논문 : 초등학생의 TV 시청 및 인터넷 이용 실태와 식습관의 관련성 연구 -광주,전남 일부지역을 중심으로-

조아라 ( A Ra Jo ),길진모 ( Jin Mo Khil ) 한국식생활문화학회 2010 韓國食生活文化學會誌 Vol.25 No.2

This study was conducted to examine the relationship between dietary habits and time spent watching TV and using internet, in elementary school children. The data were collected by a questionnaire survey of 712 elementary school children, within Gwangju and Jeonnam area. The SPSS 12.0/win program was used to analyze the 523 samples. Amount of TV-watching time was found to be related to the dietary habit score in the subjects. The children who watch TV "less than 1 hour/day" on weekdays had a better dietary habit score than those who watch TV "more than 1 hour" (p<0.0001). The children who watch TV "less than 2 hours/day" on weekends had a better dietary habit than the children who watch TV "more than 2 hours/day" (p<0.0001). The internet usage was also related to the dietary habit score in these children: those who use internet "less than 1 hour/day" on weekdays had a better dietary habit score than the children who use internet "more than 2 hours/day" (p<0.0001). The children who use internet "less than 2 hours/day" on weekends had a better dietary habit score than the children who use internet "more than 2 hours/day" (p<0.0001). These results indicate that the children tend to have a better diet when their TV and internet time is limited and thus healthy dietary behavior is negatively associated with a sedentary pattern of activity in elementary school children.

소비자 심리에 대한 영향 인자로서의 국내 주얼리 관련 뉴스 특성 분석 연구

조아라 ( A Ra Jo ),서진한 ( Jin Hwan Suh ) 한국정보디자인학회 2014 정보디자인학연구 Vol.23 No.-

본 연구는 국내 언론이 경제여론의 주도자 또는 의제 설정자의 역할을 수행하며 특히 경기 하강기에 그 영향력이 강하다는 점과 언론의 논조가 소비활동과 관련한 소비심리형성에 영향을 미친다는 측면에서 국내 주얼리 관련 뉴스보도 내용과 형식에 대한 연구로, 향후 의제설정 방향 제시를 목적으로 미디어 간 특성과 차이를 살펴보고자 하였다. 조사대상으로 2003년부터 2013년까지 10년 동안 온라인 홈페이지 키워드 검색을 통하여 KBS(322건), MBC(159건), SBS(323건), YTN(117건) 방송사 뉴스와 조선일보(210건), 중앙일보(501건), 동아일보(143건), 한국일보(204건) 신문사의 뉴스기사 1,979개를 분야별로 표집하고 뉴스틀, 뉴스가치를 기준으로 7개의 세부항목으로 나누어 분류하였다. 그리고 이를 다시 긍정적 정서의 기사와 부정적 정서의 기사로 분류하였다. 그 결과 긍정적 정서의 기사는 소비심리에 영향을 미치는 뉴스의 논조에는 특정 형식이 있음을 이 연구는 보여주고 있으며, 소비자를 대상으로 한 산업적인 미디어 커뮤니케이션 전략수립이 필요하다. 주얼리 산업은 뉴스보도 논조와 보도량 및 내용 등이 산업발전에 영향이 크다는 책임의식을 공유해야 할 것이다. This paper analyzes the contents and formats of news media reports dealing with jewelry products, focusing the characteristics among the mass media for the future research objectives. This research was initiated on the recognition that the domestic mass media play the role of a public opinion formulator or agenda setter in the economic field and its influence is particularly strong during an economic recession. This paper was motivated by the fact that the media’s comments are supposed to substantially influence onthe consumer mentality leading to consumption behaviors. This paper collected data covering 10 years from 2003 through 2013 by online keyword searches. The 1979 news pieces and articles were driven from the broadcasters including KBS, MBC, SBS and YTN, and from the newspapers including the Chosun Ilbo, the JungAng Ilbo, the Dong-A Ilbo and the Hankook Ilbo. The collected data were edited intothe subject fields and classified into 7 categories based on the news framework, values, etc. Then the news table was talliedinto positive comments and negative comments. This paper reveals the characteristics and formats of the news reports affecting the consumer mentality. Accordingly, it is necessary for the concerned parties to prepare industry-wide communication strategies vis-a-vis the mass mediareporting against the backdrop of consumer mentality. The jewelry industry has to develop a sense of responsibility for the comments, volume and contents of the news reports dealing with their products.

탄성 다물체계 동역학을 기반으로 한 부유식 해상 풍력 발전기 타워의 구조 해석

박광필(Kwang-Phil Park),차주환(Ju-Hwan Cha),구남국(Namkug Ku),조아라(A-Ra Jo),이규열(Kyu-Yeul Lee) 대한기계학회 2012 大韓機械學會論文集A Vol.36 No.12

본 논문에서는 부유식 플랫폼의 동적 거동을 고려하여 해상 풍력 발전기 타워의 구조 해석을 수행하였다. 풍력 발전기는 플랫폼, 타워, 낫셀, 허브 그리고 3 개의 블레이드로 구성된다. 타워는 3 차원 빔 요소를 사용하여 탄성체로 모델링하여 탄성 다물체계 동역학을 기반으로 한 운동 방정식을 구성하였다. 회전하는 블레이드에는 블레이드 요소 운동량 이론에 따라 계산된 공기역학적 힘이 적용되었고, 부유식 플랫폼에는 유체정역학적 힘, 유체동역학적 힘 그리고 계류력이 적용되었다. 타워의 구조 동역학적 거동을 수치적으로 시뮬레이션하였다. 시뮬레이션 결과를 이용하여 굽힘 모멘트와 응력을 산출하고 허용치와 비교하였다. In this study, we perform the structural analysis of a floating offshore wind turbine tower by considering the dynamic response of the floating platform. A multibody system consisting of three blades, a hub, a nacelle, the platform, and the tower is used to model the floating wind turbine. The blades and the tower are modeled as flexible bodies using three-dimensional beam elements. The aerodynamic force on the blades is calculated by the Blade Element Momentum (BEM) theory with hub rotation. The hydrostatic, hydrodynamic, and mooring forces are considered for the platform. The structural dynamic responses of the tower are simulated by numerically solving the equations of motion. From the simulation results, the time history of the internal forces at the nodes, such as the bending moment and stress, are obtained. In conclusion, the internal forces are compared with those obtained from static analysis to assess the effects of wave loads on the structural stability of the tower.

400 nm급 폴리에스터 해도형 초극세사 편성물의 감량 및 염색 특성

박영기,조아라,이정진,Park, Young Ki,Jo, A Ra,Lee, Jung Jin 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.5

The weight reduction and dyeing properties of circular-knitted fabrics, fabricated from sea-island-type polyethylene terephthalate (PET) ultramicrofiber with a single fiber that is approximately 400 nm in diameter, were investigated. It was found that the dissolution ratio was dependent on the process temperature and the concentration of the sodium hydroxide (NaOH) solution used during alkali treatment. The use of a penetrating agent reduced the dissolution rate when using a 1 wt% NaOH solution, but accelerated the dissolution when using a 2 wt% NaOH solution. The dissolution ratio reached its theoretical maximum when the fabric was treated at $95^{\circ}C$ for approximately 40-50 min with a 1 wt% NaOH solution and for approximately 15-20 min with a 2 wt% NaOH solution. Under these treatment conditions, a large number of the sea components were dissolved, although some island components were not separated even in the case of treatment at $95^{\circ}C$ for 50 min with a 1 wt% NaOH solution, as monitored by scanning electron microscopy (SEM). The use of a cationic dye staining method also allowed for observation of the dissolution behavior. The color yield of the disperse dye on the alkali-treated fabric was dependent on the dyeing temperature, and the K/S value decreased as the dyeing temperature increased from $110-130^{\circ}C$. The build-up property of the fabric was generally good, the wash fastness was very poor to poor, and the light fastness was poor to fair.

다물체 동역학을 이용한 타워크레인 운송 모델링 방법 연구

조아라(A-Ra Jo),박광필(Kwang-Phil Park),이철우(Chul-Woo Lee) 대한조선학회 2015 大韓造船學會 論文集 Vol.52 No.4

한글 기반 텍스트형 프로그래밍 언어의 교육적 활용 고찰

조아라 ( A-ra Jo ),김성식 ( Seong-sik Kim ) 한국컴퓨터교육학회 2017 한국컴퓨터교육학회 학술발표대회논문집 Vol.21 No.2

2015 개정 교육과정에 따라 2019년부터 초등학교 5~6학년은 SW교육을 의무적으로 실시하게 되었다. 특히 SW교육을 위한 프로그래밍 언어의 경우 초등학교와 중학교에서는 블록형과 텍스트형 구분 없이 활용할 수 있으나, 고등학교의 경우에는 텍스트 기반 프로그래밍 언어를 활용하도록 제시하고 있다. 하지만 많은 학습 자들이 처음 텍스트형 프로그래밍 언어를 접하게 되면 문법의 어려움과 외국어의 벽에 부딪쳐 어려워한다. 본 연구에서는 학습자들이 처음 텍스트형 프로그래밍을 학습할 때 효율적인 프로그래밍 학습을 위하여 한글 프로그래밍 언어를 사용할 것을 제안한다. 한글 프로그래밍 언어를 교육적으로 활용하였을 때의 장점과 교육적 활용에 있어 고려해야 할 문제점, 한계점 및 보완해야 할 점을 분석해보고자 한다.