광 버스트 교환 망의 성능향상을 위한 버스트 전송률 제어 방식

이수경,김래영,Lee Su kyoung,Kim Lae young 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.3a

광 버스트 교환 망에서 contention으로 인한 버스트의 손실은 망 성능에 중요한 영향을 끼친다. 많은 contention resolution 방식들이 제안되었지만 이들 중의 대부분은 contention을 방지하기 보다는 주로 수동적인 형태로 contention을 해결하는데 주력하고 있다. 본 논문에서는 망 내 트래픽 부하와 버스트 손실에 따라 버스트의 전송률을 제어하는 능동적인 contention avoidance 방식을 제안한다. 제안한 방식이, 기존의 광 버스트 전송률 제어 방식 및 버스트 전송률 제어를 제공하지 않는 일반적인 광 버스트 교환 모델과 비교하여 버스트 손실률이 향상됨과 동시에 처리율(throughput)도 보장함을, 시뮬레이션을 통해 입증한다. In Optical Burst Switching(OBS) networks, burst loss due to contention significantly affects the performance of networks. Even if many contention resolution schemes have been proposed, most of them have focused mainly on passively resolving contentions instead of avoiding them. In this paper, we propose an active contention avoidance scheme which controls a burst sending rate according to traffic load and burst loss in a network. Simulation results show that the proposed scheme can more effectively reduce the burst loss rate compared to existing OBS model with and without burst sending rate control, and at the same time guarantees throughput.

할룩스 포인트를 이용한 기능성 인솔 착용 시 동적균형에 미치는 영향

이수경,최임락,Su-Kyoung Lee,Im-Rak Choi 대한고유수용성신경근촉진법학회 2024 PNF and Movement Vol.22 No.2

Purpose: The purpose of this study was to determine the effects of functional insole application using a hallux point on dynamic balance. Methods: Twenty-nine participated in this study. The experiment investigated changes in dynamic balance with the use of a functional insole that emphasized the hallux point. After explaining the experiment to the subjects, the Y-balance test was conducted to measure dynamic balance before the insole was applied. The test was then repeated after the functional insole with the hallux point was. Paired t-tests were used to analyze the statistical differences before and after the application of the functional insole with the hallux point. Results: The functional insole that emphasizes the hallux point significantly increased the distance in the anterior (p<0.05), posteromedial (p<0.05), posterolateral (p<0.05) directions as well as the composite score measured by the Y-balance test compared to before the insole application. Conclusion: The use of a functional insole that emphasizes the hallux point can help the foot pronate during dynamic balance, thereby improving balance through the control of the sole.

동심축류가 유도되는 미세유체 소자 기반 Collagen Type I 미세섬유의 제작

이수경,이광호,Lee, Su Kyoung,Lee, Kwang-Ho 대한의용생체공학회 2016 의공학회지 Vol.37 No.5

In this study, a co-axial flow induced microfluidic chip to fabricate pure collagen type I microfiber via the control of collagen type I and Na-alginate gelation process. The pure collagen type I microfiber was generated by selective degradation of Ca-alginate from 'Core-Shell' structured hydrogel microfiber. To make 'Core-Shell' structure, collagen type I solution was introduced into core channel and 1.5% Na-alginate solution was injected into side channel in microfluidic chip. To evaluatethe 'Core-Shell' structure, the red and green fluorescence substances were mixed into collagen type I and Na-alginate solution, respectively. The fluorescence substances were uniformly loaded into each fiber, and the different fluorescence images were dependent on their location. By immoblizing EpH4-Ras and C6 cells within collagen type I and Na-alginate solution, we sucessfully demonstrated the co-culture of EpH4-Ras and C6 cells with 'Core-Shell' like hydrogel microfiber for 5 days. Only to produce pure collagen type I hydrogel fiber, tri-sodium citrate solution was used to dissolve the shell-like Ca-alginate hydrogel fiber from 'Core-Shell' structured hydrogel microfiber, which is an excellent advantage when the fiber is employed in three-dimensional scaffold. This novel method could apply various application in tissue engineering and biomedical engineering.

발목에 적용한 무게 부하가 뇌졸중 환자의 보행요소에 미치는 영향

이수경,Lee, Su-Kyoung 대한고유수용성신경근촉진법학회 2018 PNF and Movement Vol.16 No.2

Purpose: This study aimed to analyze the visual and spatial elements of the gait of a stroke patient who had diverse ankle weight loads applied, according to weight changes. Methods: The subject was a 57-year-old stroke patient diagnosed and hospitalized with a left intracerebral hemorrhage. A weight equivalent to 0%, 1%, and 2% of his body weight was applied to the area 5cm upward from the ankle using a Velcro strap. He was then trained on a treadmill, receiving a six-minute walk test to evaluate his gait ability. A gait analyzer was used to collect visual and spatial elements, such as gait distance, gait velocity, cadence, step length, stride length, and swing phase, according to a weight load equivalent to 0%, 1%, and 2% of his body weight. Results: According to the results of applying 0%, 1%, and 2% of his body weight on the ankle, except for gait velocity, his gait distance, cadence, step length, stride length, and swing phase were higher when 1% of his body weight was applied compared to 0% or 2% of his body weight. Conclusion: Applying a weight equivalent to 1% of the body weight to the ankle positively affected the visual and spatial element of the gait and heightened the efficiency of exercise during treadmill training, a gait-training tool generally used for stroke patients. However, the result is difficult to generalize because the number of subjects was small with only one subject.

중년 직장여성의 일-가정 갈등이 삶의 의미에 미치는 영향: 사회적지지와 자기효능감의 매개효과를 중심으로

강명수(Kang, Myung­-Su),류은진(Ryoo, Eun-Jin),이수경(Lee, Soo-Kyoung) 한국가족학회 2019 가족과 문화 Vol.31 No.3

본 연구는 다중역할을 수행하고 있는 중년 직장여성을 대상으로 일-가정 갈등, 사회적지지, 자기효능감, 삶의 의미 간의 관계를 파악하고자 하였다. 구체적으로 연구 대상자는 40세에서 60세 미만의 자녀가 있는 맞벌이 중년 직장여성들로서 총 202명의 자료가 최종 분석에 사용 되었다. 구조방정식 모형을 통해 자료를 분석하였는데, 분석결과 첫째, 중년 직장여성의 일-가정 갈등은 사회적지지, 자기효능감과 유의미한 관계를 맺고 있었으나, 삶의 의미와는 직접적인 유의미한 관계를 갖고 있지 않았다. 둘째, 사회적지지와 자기효능감은 일-가정 갈등과 삶의 의미 간의 관계에서 유의미한 완전매개효과를 보이는 것으로 나타났다. 따라서 중년 직장여성이 다중역할 수행에서 삶의 의미를 찾도록 도와주기 위해서는 사회적지지와 자기효능감을 높여줄 필요가 있다. 연구결과를 토대로 교육과 상담에의 논의점 및 제안점을 제시하였다. The purpose of our study was to identify a structural relationship between the work-family conflict, social support, self-effectiveness and the meaning of life among married female workers who are performing multiple roles. The subjects were middle-aged married working mothers aged 40 to 60, they taked care of at least one child and worked more 10 hours in a week. The 202 data were analyzed using a structural equation model. The analysis results showed in the lives of middle-aged married female workers as follows. First, the work-family conflict had direct effects on social support and self-effectiveness significantly. And the work-family conflict had no significant direct effect but significant indirect effect on the meaning of life. Second, social support and self-effectiveness had complete mediation effects in relation between the work-family conflict and the meaning of life. Therefore, to find the meaning of life for middle-aged married female workers, it is necessary to enhance their social support and self-effectiveness. Based on the results of the study, we suggested the discussion for education and counseling.

이미지메이킹(Image Making)의 의미에 관한 연구

이수경 ( Su Kyoung Lee ) 한국미용학회 2005 한국미용학회지 Vol.11 No.3

연구논문 : 청소년의 TV시청과 연예인 이미지 선호도

이수경 ( Su Kyoung Lee ),권수애 ( Soo Ae Kweon ) 한국미용학회 2007 한국미용학회지 Vol.13 No.3

The purpose of this study is to research the relationship between the young`s(adolescent`s) behavior to follow the motion and action through TV programs and the young`s preference style for each entertainer`s occupation. This study was analyzed and determined by the questionaries for 704 young interviewees who live in ChungBuk area as a middle, or high school student. The questionaries is made up of the question to review the young`s acquaintance for the entertainer`s things and for the effectiveness of TV media and things attracted. For the assurance and trust for this question, it was confirmed by the negotiation of both the expert and the pre-survey. The analyzing methods are SPSS VER.12.0. to find out the frequency and statistics. And X2-test has been done to research the relationship between the group. Additionally the cross analysis, t-test, and ANOVA analysis(Consequence Verification, LSD) were applied for this study. The result of this study has been determined as follows; 1. A boy more than a girl, and the middle school student more than the high school has high attention for TV programs. 2. The favorable entertainer`s occupation is different by their gender and their trial to communicate with their favorite entertainers are different as well. 3. The attitude for the entertainer is quite similar with the preference and attention as per their gender and grades. 4. It is quite different for the favorable image per each entertainer`s occupation. For the aspect to their favorable image, it can be differed by their gender such like the young girl love the sharp one and the boy love the one who has an open-mind with a characteristic charisma. The boy has an interest in the shape and appearance of the entertainers`, but the girl can be appealed by a voice tone, pose of them.

온도와 자기력 변화에 따른 자성유체의 열전달 특성 연구

이수경(Su Kyoung Lee),김세영(Saeyoung Kim),권세랑,경세연(Se Yun Kyung),이민서(Min Seo Lee),이하윤(Ha Yun Lee),김지은(Ji Eun Kim) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11

닫힌 사슬운동과 병행된 중간볼기근의 기능적 전기자극이 편마비환자의 보행에 미치는 효과

이수경 ( Su Kyoung Lee ),박민철 ( Min Chull Park ),심제명 ( Je Myung Shim ),김경 ( Kyung Kim ) 대한물리의학회 2011 대한물리의학회지 Vol.6 No.1

Purpose:The purpose of this study was to find out the effect of closed kinetic chain exercise with functional electrical stimulation(FES) of the gluteus medius on gait in stroke. Methods:30 hemiplegic patients voluntarily participated in this study. Subjects were divided into experimental group (n=15) and control group (n=15). Experimental group was given closed kinetic chain exercise with FES of the gluteus medius and control group was given only closed kinetic chain exercise for 4 weeks. All subjects were measured 10m-walking speed, cadence, functional walking category (FAC) and modified motor assessment scale (MMAS) before and after intervention. Results:In experimental group, gait velocity, cadence, FAC and MMAS showed significant difference between pre and post test(p<05). In control group, gait velocity, cadence and FAC showed significant difference between pre and post test (p<.05). Before intervention, gait velocity, cadence, FAC and MMAS were not significant difference between experimental group and control group (p>.05), but after intervention, gait velocity, FAC and MMAS were significant difference (p<.05). Conclusion:This study show that closed kinetic chain exercise with functional electrical stimulation(FES) of the gluteus medius is beneficial intervention for increase the wlking ability in stroke.

횡성지역 천연 소나무와 참나무류 순림 및 혼효임분의 탄소 저장량 추정

이수경 ( Sue Kyoung Lee ),손요환 ( Yow Han Son ),노남진 ( Nam Jin Noh ),허수진 ( Su Jin Heo ),윤태경 ( Tae Kyung Yoon ),이아름 ( An Reum Lee ),( Sarah Abdul Razak ),이우균 ( Woo Kyun Lee ) 한국산림과학회 2009 한국산림과학회지 Vol.98 No.6