• Journal of Internet of Things and Convergence
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• v.6 no.4
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• pp.39-48
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• 2020

This study intends to the estimate the determinants and state dependence of long-term care services in Korea. For this purpose, we analyzed the transition patterns among three states of long-term care service utilization over time by using the Korea Welfare Panel Study data with the random effect multinomial logit model. It is found that the result showed a strong state dependence in long-term care service utilization. Especially, long-term care insurance for the elderly showed a strong state dependence among others. Among the individual demographic characteristics, the higher the age, the higher the probability of using long-term care insurance for the elderly, while the lower the probability when married. The characteristics of the residential region showed that the residents of the urban-rural integrated region had a significantly higher probability of using long-term care insurance than the reference region. The results of this study suggest that the long-term care service users have a strong state dependence, which means that it is important to take into account the increase in the utilization period of existing users in future demand forecasting.

• Journal of Korea Entertainment Industry Association
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• v.14 no.4
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• pp.341-347
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• 2020

The purpose of this study is to identify factors affecting the perceived health conditions of the elderly in Korea, and to provide basic data on ways to improve the perceived health conditions of the elderly and future direction of the elderly welfare project. As an analysis method, Pearson's correlation was used to examine the correlation betwwen perceived health conditions, ADL, IADL, social participation, depression, nutritional conditions, and multiple regression analysis was used to find out which of these factors influenced. Also, to see the difference in depression according to the degree of perceived health conditions, a post-test(Scheffe) was used after one-way variance analysis(p<0.5). As a result of the analysis, perceived health conditions was positively correlated with ADL, IADL, social participation, and nutritional conditions, and negatively correlated with depressive state. In addition, as a result of examining the degree of depression according to the perceived health status, it showed a significant difference between groups. and the more the group perceived that their health was bad, the more severe it was. perceived health condition was found to be most associated with depressive status. and the positively perceived health conditions showed that the degree of depressive status also decreased, indicating that it is effective to actively manage depression to promote perceived health conditions.

• Korean Journal of Optics and Photonics
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• v.4 no.2
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• pp.233-241
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• 1993

Quantum superposition states are reviewed from an optical point of view. Production of the optical superposition states, nonclassical properties of the superposition states and influence of vacuum on the nonclassical properties of the superposition states are discussed.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1998.10a
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• pp.300-303
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• 1998

본 논문에서는 과거의 상황 및 그 변화 과정이 상태전이를 고려한 퍼지-신경망 추론 시스템을 제안한다. 각 객체의 과거의 상태 전이 관계를 퍼지 시계열에 의한 퍼지 관계식을 도입하여 현재상태를 추론하고, 퍼지-신경망을 이용하여 다음 상태를 추론한다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.30 no.5
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• pp.62-70
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• 2002

Methodology of predicting steady performance of gas turbine engine from transient test data was explored to develop an economic performance test technique. Discrepancy of transient performance from steady performance was categorized as dynamic, thermal and aerodynamic transient effects. Each effect was mathematically modeled and quantified to provide correction factors for calculating steady performance. Engine performance tests were conducted at Altitude Engine Test Facility of KARI. The influence of engine inlet/outlet condition change on engine performance was corrected firstly, and then steady performance was predicted from the correction factors. The result was compared with steady performance test data. This correction method showed an acceptable level of precision, 3.68% difference of fuel flow.

• Korean Journal of Childcare and Education
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• v.10 no.2
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• pp.133-151
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• 2014

The purpose of this study was to examine maternal mental-state talks while mothers and their 2-year-old children interacted in two contexts which were pretense/role-play and shared book reading contexts. Thirty-six dyads of mothers and their 2-year-old children participated in this study. The results showed that the mothers made more references to mental-state in the pretense/role-ply context than in the book reading context, but the ratio of using the three types of mental state talks(i.e., desire, feeling, and cognition) did not vary with the contexts. The most frequently used mental-state talk by the mothers was 'desire' in both contexts and the tendency to use the three types of mental-state talks in the two contexts was related. The results of this study suggest implications for providing useful information on the role of mothers in the development of children's theory of mind.

• Journal of KIISE:Computer Systems and Theory
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• v.29 no.10
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• pp.561-572
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• 2002

Deadlock detection in distributed systems is considered difficult since no single site knows the exact information on the whole system state. This paper proposes a time-efficient algorithm for distributed deadlock detection and resolution. The initiator of the algorithm propagates a deadlock detection message and builds a reduced wait-for graph from the information carried by the replies. The time required for deadlock detection is reduced to half of that of the other algorithms. Moreover, any deadlock reachable from the initiator is detected whereas most previous algorithms only find out whether the initiator is involved in deadlock. This feature accelerates the detection of deadlock. Resolution of the detected deadlock is also simplified and precisely specified, while the current algorithms either present no resolution scheme or simply abort the initiator of the algorithm upon detecting deadlock.

• Journal of KIISE:Computer Systems and Theory
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• v.30 no.5_6
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• pp.280-289
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• 2003

Deadlock recovery-based routing algorithms in wormhole networks have gained attraction due to low hardware complexity and high routing adaptability Progressive deadlock recovery techniques require a few dedicated resources to transmit deadlocked packets rather than killing them. Selection of deadlocked packets is primarily based on time-out value which should be carefully determined considering various traffic patterns or packet length. By its nature, current techniques using time-out accompany unignorable number of false deadlock detections especially in a heavy-loaded network or with long packet size. Moreover, when a deadlock occurs, more than one packet may be marked as deadlocked, which saturate the resources allocated for recovery. This paper proposes more accurate deadlock detection scheme which does not make use of time-out to declare deadlock. The proposed scheme reduces the probability to detect false deadlocks considerably. Furthermore, a single message is selected as deadlocked for each cycle of blocked messages, thereby eliminating recovery overheads.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.38 no.2
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• pp.137-144
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• 2001

In this paper, a state assignment algorithm was proposed to reduce power consumption in control-flow oriented finite state machines. The Markov chain model is used to reduce the switching activities, which closely relate with dynamic power dissipation in VLSI circuits. Based on the Markov probabilistic description model of finite state machines, the hamming distance between the codes of neighbor states was minimized. To express the switching activities, the cost function, which also accounts for the structure of a machine, is used. The proposed state assignment algorithm is tested with Logic Synthesis Benchmarks, and reduced the cost up to 57.42% compared to the Lakshmikant's algorithm.

• Korea journal of population studies
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• v.28 no.1
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• pp.23-45
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• 2005

혼인과 사망에 관한 연구 대부분은 혼인상태에 있는 사람이 혼인상태에 있지 않은 사람보다 더 건강하게 오래 산다는 사실을 보여준다. 그 이유는 선별효과와 보호 효과로 설명된다. 선별 효과에 의하면, 건강한 사람이 쇠약한 사람보다 혼인할 가능성이 높다. 그 결과, 독신자 집단은 유배우자 집단에 비해 병약한 사람들이 전체 집단에서 차지하는 비율이 높아 더 높은 사망률을 보인다. 보호효과는 혼인이라는 유대를 통해 배우자들이 건강할 때나 아플 때나 서로의 건강을 염려해 주고 또 경제적 그리고 정신적 문제로 인한 스트레스와 스트레스에 관련된 병을 감소시켜, 혼인상태에 있는 사람들의 사망률을 혼인 상태에 있지 않은 사람들의 사망률보다 낮춰 준다는 것이다. 이 연구에서, 우리는 혼인상태의 은퇴 고령 남성이 독신상태의 은퇴 고령 남성과 유의미한 사망률 차이를 보이지 않지만, 이혼하거나 별거하거나 혹은 배우자가 사망한 상태의 은퇴 고령남성보다는 낮은 사망률을 보인다는 사실을 발견했다. 비록 선별효과를 입증해 보여주지는 못했지만. 혼인을 통한 재정적 복지가 은퇴 고령 남성의 사망에 영향을 미치는 경험적 증거는 발견하였다. 중간 소득과 저소득 사이의 은퇴 고령 남성에서 나타나는 사망률 차이는 그들 건강상태의 차이로 나타난다. 중간소득의 은퇴고령 남성이 저소득의 은퇴 고령 남성보다 약간 더 많은 재정적 복지를 통해 보다 나은 건강상태를 유지하고 그 결과 약간 더 낮은 사망률을 보인다. 반면 고소득의 은퇴한 고령남성에게는 혼인의 재정적 복지뿐 아니라 그들의 소득도 그들의 건강증진 및 사망률 저하에 유의미한 영향을 미치는 것으로 나타났다. 동일한 건강상태일지라도, 고소득의 은퇴 고령남과은 타 집단의 고령 남성보다 사망할 가능성이 낮았다.