• Journal of the Korean earth science society
• /
• v.24 no.5
• /
• pp.428-439
• /
• 2003

Landslides, as a geological hazard, have caused extensive damage to property and sometimes result in loss of life. Thus, it is necessary to assess vulnerable areas for future possible landslides in order to mitigate the damage they cause. For this purpose, spatial data integration has been developed and applied to landslide hazard mapping. Among various models, this paper investigates and discusses the effectiveness of the Bayesian spatial data integration approach to landslide hazard mapping. In this study, several data sets related to landslide occurrences in Jangheung, Korea were constructed using GIS and then digitally represented using the likelihood ratio function. By computing the likelihood ratio, we obtained quantitative relationships between input data and landslide occurrences. The likelihood ratio functions were combined using the Bayesian combination rule. In order for predicted results to provide meaningful interpretations with respect to future landslides, we carried out validation based on the spatial partitioning of the landslide distribution. As a result, the Bayesian approach based on a likelihood ratio function can effectively integrate various spatial data for landslide hazard mapping, and it is expected that some suggestions in this study will be helpful to further applications including integration and interpretation stages in order to obtain a decision-support layer.

• The Journal of the Korea Contents Association
• /
• v.12 no.9
• /
• pp.116-125
• /
• 2012

This study examined the degree to which integrated marketing communication(IMC) might be manifested in South Korean television advertising. Using a framework by Nowak and Phelps(1994), this study investigated the degree of IMC utilization by service organizations and physical goods manufacturers at the advertisement level. The Result showed that 44.6% of the television ads were classified as integrated marketing communication according to criteria discussed by Nowak and Phelps(1994). More specifically, approximately 90.7% of the integrated ads achieved this status by using two communication tools of different orientations. In addition, the most common form of IMC at this lowest level consisted of an image-oriented(brand advertising) and a behavior-oriented(direct response) communication tool. The second common form of IMC, that is, 9.3%, used three different communication tools; they consisted of an image-oriented tool(brand advertising) and the two behavior-oriented(i.e., direct response and sales promotion) communication tools. Nothing of the magazine ads used all four tools. Thus, South Korean television ads exhibited higher degrees of IMC which tended to include more behavior-oriented communication tools than image-oriented communication tools. These results indicate that much higher chances for advertisers to expand the level of IMC will be existed. Furthermore, the results suggest that significantly higher as well as a wider variety of communication tools are being used by advertisers, considering the limit of samples investigated in this research.

• The Journal of the Korea Contents Association
• /
• v.13 no.10
• /
• pp.325-346
• /
• 2013

This study analyzed the differences of the religious activities, faith attitudes, depression and ego-integrity by the elderly's demographic characteristics. In addition, this study analyzed the effects of the elderly's religious activities and faith attitudes on depression and ego-integrity. The survey was conducted from May 4 to 25, 2013 among the aged 60 or older with Christian faith in the Seoul metropolitan areas. And 408 responses were used in the data analysis. As a summary of the results, first, there were partially differences in religious activities, faith attitudes, depression, and ego-integrity by the elderly's demographic characteristics. Second, the subjective religious activities and faith attitudes had a negative effect on depression factor, and all factors of the religious activities had a negative effect on anti-vitality factor of the elderly. Third, the subjective religious activities had a positive effect on the attitude about life and acceptance of death, and the organizational religious activities had a positive effect on the acceptance of aging. Also, all factors of the religious activities had a positive effect on the satisfaction of the present life.

• Journal of Convergence for Information Technology
• /
• v.7 no.3
• /
• pp.55-64
• /
• 2017

This study was to develop a dementia prevention integration program and apply to elderly women living alone to evaluate the applicability of the program. Fifty-six participants who enrolled at local public health centers were assigned. The control and experimental groups were assigned to 28 subjects. As a result of the study, the integrated program for prevention of dementia showed that the experimental group was more effective as the self-practice program than the control group. Therefore, This program is considered to be a self-practice integrated dementia prevention program. In the future, this program should be revised and supplemented and extended to the local community, So it is necessary to seek a nursing intervention strategy that subjects can continuously practice.

• The Journal of the Korea Contents Association
• /
• v.14 no.9
• /
• pp.332-342
• /
• 2014

The purpose of this study is to investigate the Effects of the Integrative Cognitive Training Program on Cognitive Function of the community elderly. Nonequivalent control group pretest-posttest design was used. 28 subjects were assigned to each of the group. 24 sessions of the integrative Cognitive Training Program were applied to the experimental group from September to December. The program was provided twice per week for 12weeks, total 24 sessons to the experimental group. Cognition scale for older adults(CSOA) was used to measure cognitive function of the groups before and after the Intervention. The score of Cognition Scale for Older Adults was significantly increased in experimental group than in control group(p< .05). The results of the study that Integrative Cognitive Training Program can be vey useful to improve the cognitive ability for the community elderly.

• Journal of IKEEE
• /
• v.5 no.1 s.8
• /
• pp.111-120
• /
• 2001

VC merging involves distinguishing cells from an identical merged VC label. Various approaches have been proposed to help this identification process. However, most of them incur additional buffering, protocol overhead and/or variable delay. They make the provision of QoS difficult to achieve. So it was proposed a merge capable scheduler to support VC-merging (VCMS). However, in situations where all VCs are to be merged or the incoming traffic load is very low, it could happen that there are not enough non-merging cells to snoop. In this situation the scheduler uses special control cells to fill the empty time slots out. Too many control cells can cause high cell loss ratio and an additional packet transfer delay. To overcome the drawbacks, we propose a Sequence Skipping(SS) method where the sequencers skip the empty queues and insert SS cells. We show SS method is suitable for VC-merging and can reduce the cell loss ratio and the mean packet transfer delay through simulations.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 2010.04a
• /
• pp.388-391
• /
• 2010

본 논문에서는 풍하중을 받는 구조물의 응답을 보다 적극적으로 저감시킴으로써 구조물의 안정성과 사용성을 개선하기위한 능동제어 알고리즘을 송도 자유무역 지구에 건설중인 포스코건설 사옥에 수치해석을 통해 적용하여 그 효과를 검증하였다. 수치해석에 의한 시뮬레이션 결과를 보면 최대 제어력이 제한이 된 비선형 제어기가 LQR 제어기와 등등한 제어효과를 가지고 있는 것으로 나타났으며, 제어력의 측면에서 본다면 비선형 제어기법이 더욱 유리한 것을 알 수 있다. 또한, 본 연구에서는 구조물과 질량형 제진장치의 상호작용을 고려하여 통합적으로 제진효과를 해석하고, 이를 바탕으로 제진장치를 설계할 수 있는 소프트웨어를 개발하였다. 구조물의 모드정보에 기초한 축소모델을 구축하고 제진장치의 설계 및 제진성능 평가를 수행하고 사용성을 평가하게 된다. 전체 소프트웨어는 질량형 제진장치의 설계프로그램과 질량형 제진장치의 종류별 대안설계결과를 등가감쇠비로 표현하여 비교평가하는 두 개의 모듈로 이루어져 있으며 전자는 비제어구조물 해석 모듈 및 TMD, TLD, TLCD, AMD를 대상으로 해석 및 설계를 수행하는 총 5개의 하부 모듈로 구성된다. 본 소프트웨어를 현재 TLCD가 설치되어 있는 인천 송도 국제업무지구의 주상복합건물에 적용하여 TMD, TLD, TLCD, AMD의 대안설계를 실시하였다.

• Journal of the Korean Society of Industry Convergence
• /
• v.6 no.3
• /
• pp.261-266
• /
• 2003

이 논문에서는 반능동 진동 흡수기를 통합 시트/섀시 현가 장치에 확대, 적용하여 그 성능을 조사하였다. 통함 현가시스템의 성능분석을 위해 집중 인체질량과 함께 실험적으로 입증된 한 비선형 시트 쿠션 모델을 도입하였다. 또한 3 자유도 시트/섀시 현가시스템의 효과적인 진동제어를 위해 리아푸노브 바이스테이트 제어법칙을 사용하였다. 시뮬레이션결과 반능동 통합 현가장치는 시트 쿠션 모델과 관계없이 운전자의 승차감과 관련 있는 시트의 절대가속도 크기와 시트쿠션의 시트 트랙에 대한 상대변위를 상당히 감소시킬 수 있음을 알 수 있었다. 그러나, 주로 사용되어온 선형 쿠션 모델을 사용한 경우보다 비선형쿠션 모델을 사용한 경우의 제진성능이 약간 저조함을 알 수 있었다. 따라서, 자동차 시트 설계시 성능분석을 위해서는 실제의(비선형의) 시트 쿠션 특성을 적용해야 함을 알 수 있다.

• Proceedings of the KIEE Conference
• /
• 2011.07a
• /
• pp.1981-1982
• /
• 2011

본 논문에서는 통합자동원격검침시스템(전력량계, 가스계량기, 수도계량기)으로부터 주기적으로 취득된 전기, 가스, 수도 사용량 데이터를 분석하여 수용가 내 사람의 활동 및 비활동을 감지하는 방법, 수용가 내 사람의 활동 및 비활동 판단 임계치(Base Line, Base Level) 산출방법에 대해 연구하였다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.28 no.11B
• /
• pp.985-998
• /
• 2003

본 논문에서는 IEEE 802.11 규격을 기반으로 다중 홉 Ad Hoc 모드에서 비 실시간 및 실시간 트래픽에 대한 통합 서비스를 지원하는 Wireless LAN을 구성할 때, 분산 방식으로 실시간 서비스의 우선권을 고려한 채널 액세스의 차별화를 제공할 수 있는 매체접근제어(Medium Access Control: MAC) 프로토콜의 구현 방안을 제안한다. 이를 위해 실시간과 비 실시간 트래픽의 Contention Window (CW)를 서로 분리하며, 실시간 서비스의 지연 바운드에 따라 정해진 잔여 수명(residual time)을 우선권 설정에 반영함으로써 실시간 트래픽의 지연 요구 사항을 보장할 수 있도록 한다. 또한 실시간 트래픽의 부하에 따라서 적응적으로 offset 값을 조정함으로써 offset에 의해 발생될 수 있는 수율의 저하를 최소화한다. 제안된 방식은 기존 IEEE 802.11 MAC 규격의DCF (Distributed Coordination function) 방식을 그대로 사용하면서 CSMA/CA 기반의 경쟁 방식을 통해서도 비 실시간 트래픽과의 차별화가 가능하고, 또한 잔여 수명 시간을 고려한 동적인 우선권 할당이 가능하도록 하였다. 시뮬레이션에 의한 분석 결과에 따르면 기존 DCF와 비교할 때 실시간 단말의 용량을 2배까지 향상시킬 수 있으며, 트래픽 부하에 따라 적응적 제어를 통해 추가적인 성능 개선 효과를 확인하였다.