• 디지털융복합연구
• /
• 제11권7호
• /
• pp.297-304
• /
• 2013

본 연구는 텔레비전 뉴스의 카메라워크와 수용자의 관여도가 뉴스에 대한 장단기 기억에 어떠한 영향을 미치는지 실험을 통해 살펴보았다. 본 연구를 위해 카메라워크의 유무에 따라 2가지 종류의 TV뉴스를 제작하여 관여도를 조작한 2개의 대학생 집단에게 시청하게 하고, 이들의 장단기 기억을 측정, 분석하였다. 분석결과 TV뉴스 영상의 카메라워크는 수용자의 단기기억에는 영향을 미치지 못하지만, 장기기억에는 영향을 미치는 것으로 나타났다. 또한 관여도가 높은 수용자들은 뉴스 내용에 대한 장단기 기억이 높은 것으로 나타났다. 그러나 카메라워크는 주변단서로서 고관여도 수용자보다 저관여도 수용자의 기억에 더 큰 영향을 미칠 것으로 예측한 가설은 지지되지 못하였다.

• International Journal of Advanced Culture Technology
• /
• 제7권2호
• /
• pp.60-66
• /
• 2019

The purpose of this study was to compare the effect of educational smartphone app with the effect of learning using conventional paper material. We developed an educational app for nursing students to learn how to read blood pressure and how to take a pulse. Evaluated was the effect of the app-based education by measuring the short term memory (right after the education), the long term memory (a week later) and the satisfaction. 25 college nursing students participated for the experiment group using the app-based education and 25 for the control group using paper-based education. We applied for statistical analysis Fisher's exact test and Independent t-test. The satisfaction of the app user's appeared significantly higher than that of the paper material user's (t=2.322, p=0.024). The short term memory score was 0.23 points higher in the experimental group (6.46 points) than in the control group (6.23 points), which was not statistically significant (t =0.422, p =0.675). Similar result came for the long term memory (t=1.006, p=0.320). After adjusting for the effect of a college grade using ANCOVA, the effect on memory was significantly higher in the experiment group. There might be differences in learning ability between the experimental and the control groups.

• Animal cells and systems
• /
• 제14권1호
• /
• pp.11-15
• /
• 2010

Long-term working memory (LTWM) is a subdivision concept of working memory and indicates the enhancement of performance in a working memory task. LTWM has been shown in humans who have been engaged in a specific task requiring working memory over a long time. However, there is very little understanding of the exact mechanism of LTWM because of limitations of experimental methods in human studies. We have modified the standard T-maze task, which is used to test working memory in mice, to demonstrate LTWM in an animal model. We observed an enhancement of performance by repeated experience with the same working memory load in mice, which can be regarded as an LTWM. This effect seems to depend on the condition wherein a delay was given. This task may be a good experimental protocol to assess LTWM in animal studies.

• 한국항공운항학회지
• /
• 제28권4호
• /
• pp.154-163
• /
• 2020

The pilot's aeronautical decision-making during the flying greatly affects flight safety, and the importance of situational awareness has been greatly emphasized as a prerequisite for making the right decision. This is the reason why more research and interests are needed to help students entering the pilot training program develop excellent situational awareness from the initial stage of training. Situational awareness is closely related to long-term memory activities in human information processing, and pedagogy and cognitive psychology have emphasized the encoding techniques as an effective long-term memory method. This study was conducted to confirm whether pilot students' using the encoding techniques to learn flight education materials in the early stage of their training at domestic universities has a positive effect on improving their situational awareness.

• 한국게임학회 논문지
• /
• 제18권2호
• /
• pp.69-76
• /
• 2018

HMD의 대중적 도입으로 인해 가상현실에 대한 관심이 커지고 있다. 이런 가상현실에서의 활동은 현실과는 다른 효과들 가져올 것으로 예상되어 가상현실과 현실 간 비교 효과연구가 필요하다. 특히 가상현실에서의 교육적 효용성은 여러 연구에서 입증하고 있으나, 아직 특수교육의 경험적 맥락에 그치고 있다. 이 연구는 가상현실의 환경 안에서 교육게임콘텐츠의 기억 습득이 이루어 질 때 나타나는 장기기억효과에 대한 실증적 연구를 실시하였다. 가상현실이 아닌 e-러닝 조건과 가상현실조건 e-러닝 두 조건 내에서 학습기억실험을 실시하여 장기기억 감소율의 차이에 대한 평균차이를 검증한 결과 가상현실그룹에서 보다 낮은 기억감소율이 나타났다. 또한 배경의 유무에 따라 차이를 확인한 결과 가상환경배경이 제시된 경우에만 유의미한 차이가 나타나 가상현실의 가상환경이 장기기억의 중요한 요인임을 확인하였다.

• 한국산학기술학회논문지
• /
• 제15권12호
• /
• pp.7018-7024
• /
• 2014

본 연구에서는 GPH(Geweke and Porter-Hudak, 1983) 추정량을 이용하여 KOSPI200지수의 제곱수익률과 절대수익률을 장기기억속성이 있는지 실증분석을 수행하였다. GPH는 장기기억보전 시계열 모수 d를 직선회귀에 의해서 추정하였으며 이를 GPH 추정량이라고 하며 이는 대역폭 m에 의존한다. m값에 따른 GPH추정량의 자취를 확인하여 추정 값이 안정적인 구간을 확인하여 m을 결정한다. 분석 결과 KOSPI200지수의 제곱수익률과 절대수익률은 0< d <0.5를 만족하여 장기기억 속성을 가지고 있는 것으로 나타났다.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 2005년도 학술발표회 논문집
• /
• pp.792-796
• /
• 2005

The methods of times series analysis have been recognized as important tools for assisting in solving problems related to the management of water resources. Especially, After more than 40 years the so-called Hurst effect remains an open problem in stochastic hydrology. Until now, its existence has been explained fly R/S analysis that roots in early work of the British hydrologist H.E. Hurst(1951). Today, the Hurst analysis is mostly used for the hydrological studies for memory and characteristics of time series and many methodologies have been developed for the analysis. So, there are many different techniques for the estimation of the Hurst exponent(H). However, the techniques can produce different characteristics for the persistence of a time series each other. We found that DFA is the most appropriate technique for the Hurst exponent estimation for both the shot term memory and long term memory. We analyze the SOI(Southern Oscillations Index) and 6 tree-ring series for USA sites by means of DFA and the BDS statistic is used for nonlinearity test of the series. From the results, we found that SOI series is nonlinear time series which has a long term memory of H=0.92. Contrary to earlier work of Rao(1999), all the tree- ring series are not random from our analysis. A certain tree ring series show a long term memory of H=0.97 and nonlinear property. Therefore, we can say that the SOI and tree-ring series may show long memory and nonlinearity.

• 커뮤니케이션학 연구
• /
• 제18권1호
• /
• pp.165-193
• /
• 2010

본 연구는 단기 기억과 피험자 위주의 분석이 주를 이루는 기존 연구의 방향에 장기 기억과 BPL 단위의 분석을 추가하고 있다는 점에서 의의를 갖는다. 본 연구 결과, BPL은 단기재인(52.8%의 BPL), 장기재인(44.4%의 BPL), 장기회상(30.6%의 BPL)에서 효과적인 것으로 나타났다. BPL의 표현 방식에 따른 차이를 보면, 공감각적 BPL, 클로즈업된 BPL, 노출 시간이 긴 BPL, 주연 배우가 브랜드를 사용하는 BPL이 다른 경우의 BPL보다 효과적인 것으로 나타났다. 반면, 영화에 대한 선호도나 등장인물에 대한 선호도는 BPL 브랜드의 기억에 커다란 영향을 미치는 요소가 아니었다. 차후 연구자들은 더욱 정교한 실험 디자인을 개발하고, 매개 변인과 조절 변인의 효과를 탐구하여 현재 이 분야에 존재하는 혼란스러움을 해소해야 할 것이다.

• JSTS:Journal of Semiconductor Technology and Science
• /
• 제16권5호
• /
• pp.657-663
• /
• 2016

In this work, a novel silicon (Si) based floating body synaptic transistor (SFST) is studied to mimic the transition from short-term memory to long-term one in the biological system. The structure of the proposed SFST is based on an n-type metal-oxide-semiconductor field-effect transistor (MOSFET) with floating body and charge storage layer which provide the functions of short- and long-term memories, respectively. It has very similar characteristics with those of the biological memory system in the sense that the transition between short- and long-term memories is performed by the repetitive learning. Spike timing-dependent plasticity (STDP) characteristics are closely investigated for the SFST device. It has been found from the simulation results that the connectivity between pre- and post-synaptic neurons has strong dependence on the relative spike timing among electrical signals. In addition, the neuromorphic system having direct connection between the SFST devices and neuron circuits are designed.

• 생물정신의학
• /
• 제4권2호
• /
• pp.237-245
• /
• 1997

The study was designed to evaluate the significant roles of SSRI in rat of depression model. Chronic exposure to mild unpredictable stress has been found to depress the consumption of sweet 1% sucrose solutions in the Sprague-Dawley rats. We applied the variety of 11 types of stress regimens and identified depressive behaviours(developed by Willner) in 70 Sprague-Dawley rats. Rats in experiments were stratified into 6 groups, ie ; 3 kinds of SSRI(paroxetine, fluoxetine, sertraline), clomipramine, choline and saline control. Memory function was evaluated by passive avoidance learning and retention test. The authors determined how long memory retention would remain improved with 24 hour, 1 week, 2 weeks, 3 weeks, and 4 weeks at training-testing interval in depressive states of the Sprague-Dawley rats. The results were as follows ; 1) There were no significant differences between the 6 groups at the 24 hour training-testing interval. 2) The paroxetine treated group showed significant differences from the control group at the 1 week and 2 weeks training-testing interval. 3) The paroxetine and the fluoxetine treated groups showed singificant differences from the control group at 3 week training-testing interval. 4) The paroxetine and the choline treated groups showed significant differences from the control group at 4 week training-testing interval. In summary, paroxetine had an effect on long term memory processing from 1st week to 4th week. Also, fluoxetine(at 3rd week) and choline(at 4th week) had effect on long term memory processing. Sertraline, clomipramine were ineffective on memory processing during 4 weeks observation. Possible explanations why paroxetine had early effect on memory processing than the other selective serotonin reuptake inhibitors are rapid bioavailability, which is the characteristics of pharmacokinetics of paroxetine. In clinical situation, author carefully suggest that SSRI would be beneficial to improve the memory function caused by depressive neurochemical changes.