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.

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.

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.

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.

ATM 스위치에서 QoS 보장을 위한 우선순위제어

이수경(Su Kyoung Lee),채기준(Ki Joon Chae) 한국정보과학회 1997 정보과학회논문지 : 시스템 및 이론 Vol.24 No.1

비동기 전송 방식 (Asynchronous Transfer Mode:ATM)망에서 발생되는 트래픽은 대부분 버스티하므로 ATM 에서는 고정 비트율(Constant Bit Rate.CBR)을 갖는 트래픽에 대해서는 최고 셀 전송율로 대역폭을 할당하지만 가변 비트율(Variable Bit Rate:VBR)을 갖는 트래픽에 대해서는 최고 셀 전송율보다 작은 값으로 대역폭을 할당하는 통계적 다중화 방법을 사용한다. 따라서, 동시에 활성화(Active) 상태에 있는 트래픽원의 수가 증가하면 폭주 현상이 발생할 수 었다. 그러므로, 다양한 트래픽을 효과적으로 제어하고 각 트래픽에 대해 효율적으로 대역폭을 할당하기 위해 적절한 트래픽 제어 기능이 반드시 필요하다. 본 논문에서는 출력 버퍼형 ATM 스위치에서 한정된 크기의 버퍼에서 오버플로우가 발생되었을 때 우선 순위에 의한 스케쥴링으로 셀을 폐기하여 상이한 특성을 갖는 트래픽이 원하는 서비스의 품질 요구 사항을 보장하는 방법을 제안한다. 본 논문에서 제안된 PS-DT(Priority Scheduling with Double Threshold) 방식은 QLT에서 발생 가능한 출력 링크의 불안정한 상태를 배제하고 QLT보다 좋은 성능을 보이며, DPS-DT(Dynamic Priority Scheduling With Double ThreShold)방식은 실시간과 비실시간 트래픽의 다양한 혼합율에도 실시간으로 트래픽들의 상태를 반영함으로써 서비스의 품질 요구 사항을 보장한다. 제안된 방식의 성능은 컴퓨터 시뮬레이션을 통해 입증하였고 만족스러운 결과를 보여준다. The Asynchronous transfer mode(ATM) technique has been standardized and widely accepted as a basis for transporting and switching the user's traffic flexibly and efficiently in future broadband networks. Future broadband networks have to support new bandwidth intensive applications that will place stringent requirements on the network in terms of the QoS(Quality of Service) they receive. Inspite of the promise of abundant bandwidth, ATM would not be able to support such services unless appropriate dynamic traffic control is exercised in the network. In this paper, priority control schemes in ATM switch, PS-DT(Priority scheduling with double threshold) and DPS-DT(Dynamic Priority scheduling with double threshold) are proposed. The proposed schemes are studied based on HOL-PJ, QLT, and partial buffer sharing. The performances of both schemes have been studied through computer simulations and the results are quite satisfactory. Simulation results show that the proposed PS-DT brings better processing perfomance than the existing algorithms. The DPS-DT scheme is balancing the cell loss rates of the low and high loss priorities in real time so that each priority's cell loss requirement is met.

청소년의 연예인 선호이미지와 모방행동

이수경(Lee Su-Kyoung),권수애(Kweon Soo-Ae) 한국생활과학회 2009 한국생활과학회지 Vol.18 No.2

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

퍼스널 이미지 확립을 위한 셀프 마케팅 연구

이수경(Lee Su-Kyoung) 한국인체미용예술학회 2003 한국인체미용예술학회지 Vol.4 No.1

  Nowadays, we are struggling in competitions to survive in variously changing industrial societies. There is a common feature among people who have achieved significant success in various fields, that is, they are not the best people in their professional fields. The key to their success can be said to be their selling abilities, and marketing capacities. Therefore, this research focused on surveying the modality and aesthetic values of image making from the viewpoint of changes from the development of industrial societies, that is, from the aspects of technologies and services and from that of socio-psychological contexts related to fashion. This has a significant meaning as a new trial to establish the concept of self-marketing and their characteristics of image making from the viewpoint of marketing.<BR>  This research surveyed personal images from the viewpoint of the socio-psychological features of technologies and service marketing, and established and analyzed self marketing based on document research from the Internet, journals, domestic and foreign books and related scholarship papers etc. related to fashion, image and marketing.<BR>  The results of this research are outlined below:<BR>  Various images have been created due to the expansion of public societies and Mass Medias made by the progress of technologies since the industrial revolution, and fashions became referred to as the most visible products in consumer societies and as a device to express ego and ideas through image making productions.<BR>  Firstly, the theoretical background is as follows.<BR>  Technologies are systemic researches about necessary techniques to make something or to do some task, and are techniques to achieve self purpose through energetic organization of a working process.<BR>  Services are defined as all economic activities to create various value added, which are consumed simultaneously at the process of production, procedure and final results, and are invisible benefits arising from mutual relationships which can"t be stand alone generated.<BR>  Fashions and related clothes are styles and social synchronous phenomena, which many individuals require and accept. The influences of technologies accepted by fashion are classified into two kinds. Changes from the aspects of physical features become important factors to settle the fashion and production of various personal images into mass cultures. Changes from the aspects of mental features are social structure, power groups, changes in group will and image production from Medias.<BR>  Secondly, the concept of self-marketing is all kinds of activities to upgrade value recognition towards themselves as soon as they are made as a strategic method to express themselves as social members from the objective position of others.<BR>  Thirdly, the characteristics of self-marketing can be classified into invisibility, extinguishment, non-separateness and changeability.<BR>  Fourthly, marketing methods are direct marketing, which grasp the merits and demerits of one and directly control how to communicate with others, and indirect marketing which are verbal results from that.<BR>  The strategies of self-marketing are 1) setting price goals, 2) recognizing market survey and communication as transferring stages, and 3) creating values.<BR>  As shown above, there are various methods to express and solve according to the personal position in societies and methods to compose one"s own life. People want to be approved of by others and to be excellent ones. But, they also have opposite desires to be stably included in societies.<BR>  Various viewpoints and interests created a new profession, image consultants, and several colleges opened image making and international manners as cultural subjects. We are marketing ourselves in our daily lives throu

초음파 처리된 대나무섬유와 케냐프섬유 복합재의 기계적 특성 비교 연구

이수경(Su Kyoung Lee),박은영(Eun Young Park),박태성(Tae Sung Park),안승국(Seung Kook An) 한국염색가공학회 2020 韓國染色加工學會誌 Vol.32 No.4

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.