PLGA/피브린 지지체가 늑연골 세포의 부착과 성장에 미치는 영향

송정은(Jeong Eun Song),이유정(Yu Jung Lee),이윤미(Yun Me Lee),조선아(Sun Ah Cho),장지은(Ji Eun Jang),이동원(Dong Won Lee),강길선(Gil Son Khang) 한국고분자학회 2013 폴리머 Vol.37 No.2

Poly(lactide-co-glycolic acid) (PLGA) has been widely used in the drug delivery and tissue engineering applications because of its good mechanical strength and biodegradation profile. However, cell attachment to the scaffold is low compared with that on fibrin although cells can be attached to the polymer surface. In this study, PLGA scaffolds were soaked in cells-fibrin suspension and polymerized with dropping fibrinogen-thrombin solution. Cellular proliferation activity was observed in PLGA/fibrin-seeded costal cartilage cells (CC) on 1, 3, and 7 days using the MTT assay and SEM. The effects of fibrin on the extracellular matrix (ECM) formation were evaluated using CC cell-seeded PLGA/fibrin scaffolds. The PLGA/fibrin scaffolds elicited more production of glycosaminoglycan (GAG) and collagen than the PLGA scaffold. In this study, fibrin incorporated PLGA scaffolds were prepared to evaluate the effects of fibrin on the cell attachment and proliferation in vitro and in vivo. In this result, we confirmed that proliferation of cells in PLGA/fibrin scaffolds were better than in PLGA scaffolds. The PLGA/fibrin scaffolds provide suitable environment for growth and proliferation of costal cartilage cells.

한국 무용 외사위 동작 시 감정에 따른 운동역학적 특성

송정은(Song, Jung-Eun),오성근(Oh, Seong-Geun),설민신(Sul, Min-Sin) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.2

The alternative single arm-churning (Oe-sawi) movement with walking is one of the basic movements of Korean traditional dance. Analyzing elapsed time and time ratio, size of movement, ground reaction force, deviation of distal segments and mechanical energy, we investigated the characteristics of movement depending on the emotion. We selected Korean traditional dancers (21 females, age: 25.5±4.8years, height: 166.0±5.5cm, weight: 53.5±7.9kg), portraying four different emotions (anger, joy, sadness, and neutral) and 22 observers (12 females and 10 males, age: 27.7±9.6years) participated in this experiment to determine which emotion was recognized. The results were 1) The elapsed time was longest when “sadness” was expressed, the elapsed time for deceleration phase was shortest when “joy” was expressed and the elapsed time for acceleration phase shorter when “sadness” was expressed. 2) Expressing “joy” is associated with minimization of double stance phase, while expressing “sadness” is associated with minimization of single stance phase. 3) when “sadness” was expressed the speed of motion was slow but the volume of motion was big being determined on the basis of the largest RoM of knee and ankle joint, the long path of hand movement, the smallest GRF and the longest elapsed time. 4) Frontal and lateral flexion of neck and waist flexion as well as neck rotation is associated with expressing negative emotions (“anger” and “sadness”).

EMS장비를 이용한 마이크로트레이닝이 20대 남성의 신체구성, 등속성 근기능 및 체력에 미치는 영향

송정은(Song, Jung-Eun),최근훈(Choi, Geun-Hoon),박현(Park, Hyon) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.4

This study was performed to provide electro muscle stimulation research field with fundamental information by EMS training and to clarify the effects to body composition, isokinetic function, and physical fitness of WB-EMS training with 20’s males. In this study, the effects of micro-training with EMS device on body composition, isokinetic function, and fitness level was examined on healthy 20"s males(10 control and 10 trained). Twenty minutes of micro-training, once a week for 12 weeks were performed on training group and no specific activity was required to control group for the same period. To evaluate body composition, the changes of body weight, body fat ratio, and muscle mass were traced. Morphological measures(on trunk, hip, upper limbs, and lower limbs), isokinetic muscular function (on limbs and trunk), and also flexibility, agility were measured. After 12 weeks of training, body composition and girths of body parts did not show significant change in the contrary to significant increases on torque of leg flexion and trunk extension in trained group. In fitness variables, the trained showed an increase but the controlled showed a decrease in grip strength. According to the results, twelve trials of micro-training with EMS device once a week may effective on the improvements on some limited functional fitness factors even it is considered not sufficient amount of training as compared to our traditional concept of training.

빈집 활용의 문화공간화의 과제: 금천구 빈집 프로젝트 사례를 중심으로

송정은(Jung Eun Song) 대한지리학회 2019 대한지리학회 학술대회논문집 Vol.2019 No.11

유투브(YouTube) 이용자들의 참여에 따른 한류의 확산

송정은(Jung Eun Song),장원호(Wonho Jang) 한국콘텐츠학회 2013 한국콘텐츠학회논문지 Vol.13 No.4

본 연구는 한류 팬들의 유투브 참여의 의미와 특성 및 참여형태에 따른 한류 팬들 간의 관계형성을 알아보고, 한류 팬의 유투브 참여가 한류의 확산에 미칠 영향력을 고려할 것이다. 나아가 한류 팬의 유투브 참여를 통하여 한류 콘텐츠 다양화 방안을 모색할 것이다. 연구방법은 홍콩의 10-20대를 대상으로 집단토론 인터뷰 형식의 파일럿조사와 3차례 이메일 인터뷰를 실시하였다. 홍콩의 조사 참여자들은 유투브에서 한류 관련 동영상 검색을 비롯하여 댓글을 남기거나 자신의 스타를 촬영한 동영상을 제공하는 등 능동적으로 소비하였다. 또한 자기표현 및 한류를 매개로 타인과의 공감대를 형성하기 위하여 한류 관련 동영상을 유투브 외에 소셜 네트워크 서비스를 통해 공유하였다. 이와 같이 홍콩의 한류 팬들은 유투브를 매개로 한류를 그들의 일상 속 문화로 수용하며 한류 콘텐츠를 재생산 및 확산하여 한류가 세계적으로 양방향 소통이 되는데 일조하고 있다. This research aims to consider the participatory behaviors and the relationship building of the Hong Kong Korean Wave fans on YouTube and to explores the effect of the behaviors in order to spread the Korean Wave. Furthermore, this research seek ways of developing the Korean Wave contents based on fan participation on YouTube. The research conducted both Focus Group Interview and three rounds of email interviews with the Korean Wave fans in Hong Kong. They actively participated in expressing themselves, replying to other comments, and providing video contents as a fan. Also, the fans delivered the YouTube video contents to other Social Network Services(SNS), including facebook, and online fan pages in order to build ties with friends and other the Korean Wave global fans in daily lives. Their YouTube participation contributes to creating two-way communication between the Korean Wave and its global fans by spreading and re-creating the Korean Wave contents.

CIS 응용을 위해 제한된 폭을 가지는 10비트 50MS/s 저 전력 0.13㎛ CMOS ADC

송정은(Jung-Eun Song),황동현(Dong-Hyun Hwang),황원석(Won-Seok Hwang),김광수(Kwang-Soo Kim),이승훈(Seung-Hoon Lee) 大韓電子工學會 2011 電子工學會論文誌-SD (Semiconductor and devices) Vol.48 No.5

본 논문에서는 CIS 응용을 위해 제한된 폭을 가지는 10비트 50MS/s 0.13㎛ CMOS 3단 파이프라인 ADC를 제안한다. 통상 CIS에 사용되는 아날로그 회로에서는 수용 가능한 조도 범위를 충분히 확보하기 위해 높은 전원전압을 사용하여 넓은 범위의 아날로그 신호를 처리한다. 그 반면, 디지털 회로에서는 전력 효율성을 위해 낮은 전원전압을 사용하므로 제안하는 ADC는 해당 전원전압들을 모두 사용하여 넓은 범위의 아날로그 신호를 낮은 전압 기반의 디지털 데이터로 변환하도록 설계하였다. 또한 2개의 잔류 증폭기에 적용한 증폭기 공유기법은 각 단의 증폭동작에 따라 전류를 조절함으로써 증폭기의 성능을 최적화 하여 전력 효율을 더욱 향상시켰다. 동일한 구조를 가진 3개의 FLASH ADC에서는 인터폴레이션 기법을 통해 비교기의 입력 단 개수를 절반으로 줄였으며, 프리앰프를 제거하여 래치만으로 비교기를 구성하였다. 또한 래치에 입력 단과 출력 단을 분리하는 풀-다운 스위치를 사용하여 킥-백 잡음으로 인한 문제를 최소화하였다. 기준전류 및 전압회로에서는 온-칩 저 전력전압구동회로만으로 요구되는 정착시간 성능을 확보하였으며, 디지털 교정회로에는 신호특성에 따른 두 종류의 레벨-쉬프트 회로를 두어 낮은 전압의 디지털 데이터가 출력되도록 설계하였다. 제안하는 시제품 ADC는 0.35㎛ thick-gate-oxide 트랜지스터를 지원하는 0.13㎛ CMOS로 제작되었으며, 측정된 DNL 및 INL은 10비트에서 각각 최대 0.42LSB, 1.19LSB 수준을 보이며, 동적 성능은 50MS/s 동작속도에서 55.4㏈의 SNDR과 68.7㏈의 SFDR을 보인다. 시제품 ADC의 칩 면적은 0.53㎟이며, 2.0V의 아날로그 전압, 2.8V 및 1.2V 등 두 종류의 디지털 전원전압에서 총 15.6㎽의 전력을 소모한다. This work proposes a skinny-type 10b 50MS/s 0.13㎛ CMOS three-step pipeline ADC for CIS applications. Analog circuits for CIS applications commonly employ a high supply voltage to acquire a sufficiently acceptable dynamic range, while digital circuits use a low supply voltage to minimize power consumption. The proposed ADC converts analog signals in a wide-swing range to low voltage-based digital data using both of the two supply voltages. An op-amp sharing technique employed in residue amplifiers properly controls currents depending on the amplification mode of each pipeline stage, optimizes the performance of op-amps, and improves the power efficiency. In three FLASH ADCs, the number of input stages are reduced in half by the interpolation technique while each comparator consists of only a latch with low kick-back noise based on pull-down switches to separate the input nodes and output nodes. Reference circuits achieve a required settling time only with on-chip low-power drivers and digital correction logic has two kinds of level shifter depending on signal-voltage levels to be processed. The prototype ADC in a 0.13㎛ CMOS to support 0.35㎛ thick-gate-oxide transistors demonstrates the measured DNL and INL within 0.42LSB and 1.19LSB, respectively. The ADC shows a maximum SNDR of 55.4㏈ and a maximum SFDR of 68.7㏈ at 50MS/s, respectively. The ADC with an active die area of 0.53㎟ consumes 15.6㎽ at 50MS/s with an analog voltage of 2.0V and two digital voltages of 2.8V (=D<SUB>H</SUB>) and 1.2V (=D<SUB>L</SUB>).

정신지체와 자폐장애를 보이는 Cornelia De Lange 증후군 1예

송정은(Jung Eun Song),김세주(Se Joo Kim),최낙경(Nak Kyoung Choi) 대한소아청소년정신의학회 2003 소아청소년정신의학 Vol.14 No.1

불가리아 한류의 의미와 발전방향

송정은(Jung Eun Song),남기범(Kee-Bom Nahm) 한국콘텐츠학회 2016 한국콘텐츠학회논문지 Vol.16 No.6

동유럽 지역의 한류는 2000년대 후반부터 확산되고 있으며 한국의 인지도와 친숙도 형성에 기여하고 있다. 동유럽권의 한류는 루마니아와 헝가리를 중심으로 확산되었으며, 불가리아에도 한국 드라마와 케이팝이 유입되었다. 한국과 불가리아는 수교 25주년을 맞이했지만, 아직 양국의 대중은 상대국에 대한 인지도가 낮다. 본 연구는 한국과 불가리아의 관계를 바탕으로, 불가리아 한류의 의미와 한류를 매개로 양국 간에 문화적 관계형성의 방향을 논의할 것을 목적으로 한다. 이를 위해, 본 연구는 불가리아의 수도 소피아에 거주하는 20대와 30대의 남녀 24명을 대상으로 초점집단토론을 실시하여 한국에 대한 인지도와 한류의 의미 및 영향력을 살펴보았다. 불가리아의 한류는 한국대사관, 한국어교육기관, 한류 팬이 각자의 영역에서 각기 다른 대상에게 한국의 문화를 알리면서 확산되고 있지만, 대중들에게 한류는 낯선 현상이다. 경제적, 문화적으로도 한류의 영향력은 낮다. 불가리아의 한류가 한국 드라마나 케이팝의 선호를 넘어 현지의 다양한 문화적 스타일의 하나로 지속되기 위해서는, 한류 콘텐츠 제작자들의 불가리아의 사회문화적 특성에 대한 이해와 현지에서 한국문화를 다방면으로 경험할 수 있는 환경이 우선적으로 마련되어야 한다. 이를 바탕으로 한류의 특징인 혼종성과 현지 문화적 코드를 반영한 한국 드라마, 영화, 케이팝을 제작하여 한류를 확산시킬 수 있다. Hallyu in East Europe has been spread since the end of the 2000s and contributed to boost the familiarity and favorability of Korea. Hallyu in East Europe started from Romania and Hungary, Korean dramas and K-Pops spread to Bulgaria. Korea and Bulgaria established a diplomatic relations in 1990; however, people of both countries do not share enough information or knowledge on each other. This study aims to understand the meaning of Hallyu and the ways of building cultural relations through Hallyu based on the cognitions and attitudes toward Korea and Korean culture in Bulgaria. It conducted the Focus Group Discussions(FGD) for 24 Sofia residents in their 20s and 30s. The FGD questions were mainly on the level of familiarity and of impacts of Hallyu in Bulgaria. The Hallyu in Bulgaria is still not so popular although Hallyu has been promoted through the diverse activities of Korean Embassy, Sofia University, Korean language institutions, and the Hallyu fans. The economic and cultural impact of the Hallyu is not yet viable in Bulgaria. In order to be recognized as one of the foreign popular culture in Bulgaria, Hallyu should be promoted with various endeavors for Bulgarian people to experience Korean culture beyond Korean drama and K-Pops based on the understanding of socio-cultural characteristics of Bulgaria. Then, Hallyu will be spread by producing Korean dramas, films, and K-pops reflected by local cultural characteristics in Bulgaria and hybridity of Korean popular culture.

슬관절 골관절염 환자에 대한 Meloxicam의 유효성 및 안전성 평가를 위한 Diclofenac과의 공개 비교 무작위 다기관 임상 시험

송정식 ( Jung Sik Song ),박용범 ( Yong Beom Park ),이수곤 ( Soo Kon Lee ),안홍준 ( Hong Joon Ahn ),이윤우 ( Yun Woo Lee ),이창근 ( Chang Keun Lee ),고재현 ( Jae Hyun Koh ),고은미 ( Eun Mi Koh ),이은영 ( Eun Young Lee ),이충기 ( Ch 대한류마티스학회 2000 대한류마티스학회지 Vol.7 No.4

Objective: To assess the clinical efficacy and safety of meloxicam 7.5mg versus diclofenac 100mg slow release (SR) in the Korean patients with osteoarthritis of the knee. Methods: Ninety-one patients of four university hospitals in 1999 were randomized to receive once daily oral meloxicam 7.5mg (N=45) or diclofenac 100mg SR (N=46) for 8 weeks. Clinical efficacy was evaluated using 100mm Visual Analogue Scale (VAS) for pain, Lequesne index after 4, 8 weeks of treatment as well as the physician`s and patient`s global assessment at the end of treatment. Evaluations for clinical safety were performed using the incidence of adverse events, physical examinations, laboratory finding and total ingestion of antacid during the treatment. Results: After 8 weeks of therapy, both groups had significant improvement in 100mm VAS and Lequesne index than baseline although the difference between two groups did not reach statistical significance. The physician`s and patient`s global assessment were similar in two groups. The incidence of gastrointestinal adverse events was significantly lower in meloxicam group (24.4%) than diclofenac group (50.0%) (p<0.05). Conclusion: Meloxicam 7.5mg is comparable to diclofenac 100mg SR in the treatment of Korean patients with osteoarthritis of the knee. Furthermore meloxicam 7.5mg was well tolerated for 8 weeks and has safe advantage of a significantly lower incidence of gastrointestinal adverse events.

웹툰의 확산이 한류의 발전에 미치는 영향

송정은(Jung-Eun Song),남기범(Kee-Bom Nahm),장원호(Won-Ho Jang) 한국엔터테인먼트산업학회 2014 한국엔터테인먼트산업학회논문지 Vol.8 No.2

Hallyu has spread based on Korean drama, movie, K-Pop, and the recipients of Hallyu have been meeting diverse contents. The exports of the Korean computer games and cartoons increase, and the webtoon, Internet cartoon, rapidly develops due to the familarity, everydayness, and accessibility of the genre. This study explores the impact of spread of webtoon on Hallyu and considers the ways of fostering webtoon. Recently, the webtoon industry goes abroad. In order to understand the trend of webtoon industry, this study uses document research including news papers. In addition, this research refers the parts of the FGD research conducted in Indonesia. This research also understands the economic, social, and cultural impact of webtoon and focuses on the localization and development of webtoon as one of the Hallyu contents. In addition, this research suggests the ways of increasing sustainability of Korean dramas and movies, which is the core contents of Hallyu, through the development of webtoon.