• Fashion & Textile Research Journal
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• v.2 no.3
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• pp.227-233
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• 2000

The purpose of this study was to develop the High Functional Covering machine and the Compound Twister to produce the high value added textile goods and to meet the consumer's needs. For the study, 8 yarns and 12 fabrics were made with two developed machines and the tensile characteristics of the samples were tested and analysed. The result indicated that the sample fabrics kept their elongation regardless of buffering process. Elongation of the sample yarns was higher than those of yarns made with a traditional covering method. Elastic recovery of the sample fabrics was more effected by the recovery rate than by the number of extension and the characteristics of the sample yarns and fabrics were comparable to the yarns and fabrics made with a traditional covering method in terms of the position of Spandex yarns in their yarn structure and buffering effect.

• Korean Journal of Social Welfare
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• v.61 no.1
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• pp.359-382
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• 2009

Little research has been done to understand the dynamics of well-being among the oldest old, although Korea experiences a rapid increase of this population group. This study explored the effects of demographic characteristics, physical condition, stressful life events and worries on life satisfaction of aged 85 and over. The moderating effects of psychosocial resources in buffering the negative effects of the life events and worries on life satisfaction of this group were also examined. The survey data collected from 213 community residing aged 85 and over was used for analyses. Major findings are as follows. First, most frequent stressors of the oldest old were health related problems. Second, greater worries, higher income status, lower level of physical impairment, co-residence with adult children were significantly related to higher life satisfaction of the oldest old. Third, emotional support from adult children as well as self-esteem of the older persons had buffering effects on the relationship between worries and life satisfaction. According to the results, implications for practice and services to increase life satisfaction of the oldest old were discussed.

• Korean Journal of Social Welfare
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• v.51
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• pp.141-156
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• 2002

The relation among social support, depressive symptoms, and living arrangements were examined in a non-random sample of 175 adults age 60 and older. A convenience sample was obtained through a personal interview. A structural equation modeling approach was used to explore the role of social support in the relation between the living arrangements of elderly Koreans and their level of depressive symptoms. These results are consistent with previous analyses suggesting that social support plays a significant role in moderating depressive symptoms, in relation to negative living arrangements among older Korean populations (the buffering-effect hypothesis).

• Proceedings of the KSRS Conference
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• 2007.03a
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• pp.301-304
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• 2007

본 연구에서는 폐탄광 지역에서 발생하는 지반침하에 영향을 주는 주요 요인들을 추출하기 위하여 다변량 통계분석 방법의 하나인 주성분분석(Principle Component Analysis : PCA)기법과 지리정보시스템 (Geographic Information System : GIS)을 이용하였다. 이를 위해 연구지역에서 수행한 지표지질조사， 정밀조사, 실내암석시험 등으로부터 취득된 자료를 데이터베이스로 구축하고, 지반침하 위험지역 분포를 공간적으로 해석할 수 있는 지질, 토지이용, 경사도， 지표로부터 지하 갱도까지의 심도, 갱도의 지표상 위치로부터의 수평거리, 지하수심도, 투수계수, RMR(Rock Mass Rating) 값을 분석대상으로 선정하였다. 각 요인들이 연구지역 전체에 걸쳐 분포하도록 GIS의 공간분석 기법의 하나인 표면분석(Surface Analysis), 버퍼링기법(Buffering) 및 내삽법(Interpolation)을 이용하여 래스터 데이터베이스로 구축하고 이로부터 추출된 자료들을 입력값으로 하는 주성분분석을 수행하였다. 주성분분석 결과 폐탄광 지역의 지반침하에 영향을 주는 주요인을 추출하는 것이 가능하였으며, 연구지역은 지질 및 지반강도 관련 요인이 침하발생의 가장 큰 요인인 것으로 분석되었다.

• Journal of Forest and Environmental Science
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• v.16 no.1
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• pp.119-123
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• 2000

This paper studies the methods to support decision making for forest management Using GIS. Specially, most important is selecting restrict area to timber harvest suitable on scheduling its harvest in experimental forest of kangwon national university. Because timber harvesting causes water pollution, land sliding and soil erosion, it is necessary to restrict area to be harvest. The study is analyzed with Buffering modules and overlay modules which are an function of Arcinfo 7.1. As a result, restricted area is 52.64ha in total area. Of which Hardwood stand 13.21ha, pinus Pinus koraiensis stand 26.44ha, Larix leptolepis stand 12.38ha and Pinus rigida stand 0.61ha.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.8
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• pp.1486-1491
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• 2017

In this paper, we propose a private multimedia caching scheme based on wireless local area network (WLAN) to improve the quality of service for high capacity and high quality multimedia streaming services which are recently increasing and to reduce the traffic load of core networks. The proposed caching scheme stores multimedia in the storage device mounted on WLAN APs and provides streaming services on its own without Internet connection in accordance with the request from clients. We have implemented a test network based on real commercial networks and measured the performance of the proposed caching scheme in terms of frames per second (FPS) and buffering time. According to the performance measurement results, the proposed caching scheme can reduce the average buffering time by 73.3% compared to the conventional streaming scheme. In addition, the proposed caching scheme can also improve the average FPS by 71.3% compared to the conventional streaming scheme.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.803-812
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• 2022

The purpose of this study is to examine whether non-self perspective(NSP) reduces the negative effects of life stress experienced by middle-aged adults. an online survey was conducted using a sample of 207 adult men and women in their 40s and 50s, and a hierarchical regression analysis and simple slope analysis were performed. As a result, it was found that NSP modulates the negative effects of life stress on perceived stress and subjective well-being. Specifically, NSP reduced the positive effect of life event stress on perceived stress and reduced the negative effect on subjective well-being. The results of this study suggest that eastern and Buddhist self-view, NSP, has a buffering effect on life stress experienced by middle-aged adults. This study suggests that NSP should be considered as an important factor for coping with stress in middle-aged adults in counseling and clinical settings, and is expected to promote subsequent empirical research on the Buddhist concept of non-self. Finally, limitations and future studies are suggested.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.6
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• pp.1104-1109
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• 2001

In this paper, we describe a method for real-time transmitting video streams based on RTP. In order to guarantee synchronous video streams, we propose a method to grasp network situations by analyzing end-to-end network traffic. In addition, we present an algorithm for satisfying QoS requirements of real-time multimedia transmission and maintaining continuity of transmission. It describes a buffering method for overcoming bandwidth limitations and an analyzing method based on RTCP for grasping network traffic situation to resolve the problem of real-time transmission of video streams.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10c
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• pp.411-413
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• 1999

본 논문에선느 ATM 통신망을 위한 여러 ATM 스위치 모델들 중에서, 내부적으로 블록킹(blocking)이 없고 입출력 단에 각각 버퍼가 할당되어 있는 입출력 버퍼형 교환기에 대하여 연구하였다. 기존에서 스위치 스피드-업(Switch Speed-up) 기법하에서 주로 연구가 이루어졌다. 따라서, 본 논문에서는 유니폼 트래픽하에서 Output-port Expansion 기법을 사용한 귀환.손실 모드 및 하이브리드 모드하에서의 셀 손실률을 비교 분석하였다. Output-port Expansion 기법은, 한 타임 슬롯동안에 입력포트 당 하나의 셀만 교환되며, 만약 하나 이상의 셀들이 같은 출력포트로 향하면, 최대 교환되는 셀 수를 K(Output-port Expansion Ratio)개로 제한하는 방식이다. 유니폼 트래픽(uniform random traffic) 하에서 각 모드에 따른 셀 손실률을 비교 분석한 결과, 로드 0.9를 기점으로, 0.9이하의 로드에서는 하이브리드 모드가, 0.9이상의 로드에서는 손실모드가 가장 낮은 셀 손실률을 보인다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.05a
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• pp.9-11
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• 2021

최근 임베디드 엣지 컴퓨팅 디바이스에서 AI와 같은 인공지은 연산을 수행하여 AI 추론 연산의 가속화 및 분산화가 많이 이루어지고 있다. 엣지 디바이스는 임베디드 프로세서를 기반으로 AI의 가속 연산을 위해서 내부에 딥러닝 가속기를 포함하여 가속화시키는 시스템 구성을 하고 있다. 딥러닝 가속기는 복잡한 Neural Network 연산을 위한 데이터 이동이 많으며 외부 메모리와 내부 딥러닝 가속기간의 효율적인 데이터 이동 및 버퍼링이 필요하다. 본 연구에서는 엣지 디바이스 딥러닝 가속기 내부의 버퍼 구조를 모델링하고, 버퍼의 크기에 따른 버퍼링 효과를 분석해 보았다. 딥러닝 가속기 버퍼 구조는 RISC-V 프로세서 기반 가상 플랫폼에 구현되었다. 이를 통해서 딥러닝 모델에 따른 딥러닝 가속기 버퍼의 사용성을 분석할 수 있다.