• Title/Summary/Keyword: 기억도

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A Study on the Comparisons of Future Knowledge Utilizing Difference Predicted by Chaos of Knowledge of Korean University Students (한국 대학생의 지식혼돈에 따른 미래의 지식활용 차이 예측의 시계열적 비교 분석)

  • Oh, Sang-young
    • Journal of Digital Convergence
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    • v.17 no.1
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    • pp.131-140
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    • 2019
  • The development of the knowledge information system is increasing the symptoms that people refuse to remember. There is also a growing debate about whether to remember knowledge. This study investigated the preference of memorizing knowledge and finding knowledge. We predicted the use, effect, and expectation of ease of use of knowledge utilization that will appear in the future among preference groups. We analyzed whether there is a difference between the predicted expectations of knowledge utilization in the future. The first study was conducted in October 2014. This is the second study. We studied what changes were made in comparison with the first study. As a result, it was found that 1) there is no difference in broadening the diversity of knowledge utilization at future time, 2) expectation of the effect of knowledge utilization, and 3) ease of continuous knowledge creation. The results of this study suggest that it is important to provide a basis for discussing whether it is good to remember knowledge.

Comparisons of Middle- and Old-Aged Drivers' Recognition for Driving Scene Elements using Sensitivity, Response Bias, and Response Time (중년 및 고령운전자의 운전장면 개별요소에 대한 재인기억 차이: 민감도, 반응기준 및 반응시간 비교)

  • Lee, Jaesik
    • Journal of the Korean Data Analysis Society
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    • v.20 no.6
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    • pp.3185-3199
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    • 2018
  • Middle- and old-aged driver's capability in recognition for driving scene elements was compared. Central and ambient stimuli were selected from natural driving scene and sensitivity, bias and reaction time were measured as dependent measures. The results are as follows. First, in general, older drivers showed lower sensitivity than middle-aged drivers. In particular, the older drivers' sensitivity was significantly lower for the ambient stimuli than central stimuli, whereas the middle-aged drivers showed no significant difference between the two types of stimuli. Second, the older drivers tended to show more lenient responses whereas the middle-aged drivers responded more conservatively. Third, the older drivers showed longer reaction time than the middle-aged drivers, in particular, in the responses of miss and correct rejection. This results suggested that the older drivers' retention for driving scene elements in their working memory may not be stable, which can be resulted in difficulties in rapid and accurate responses in a real life driving.

The Memory Sttruggle Surrounding Battle of Okinawa and 4.3 Jeju Massacre - Based on Island of the Gods Island of Oshiro Tatsuhiro and Sooni's Uncle of Hyun, Ki Young (오키나와 전투와 제주 4·3사건을 둘러싼 기억투쟁 -오시로 다쓰히로 『신의 섬』과 현기영의 「순이 삼촌」을 중심으로)

  • Son, ji-youn
    • Cross-Cultural Studies
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    • v.41
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    • pp.7-32
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    • 2015
  • This study started from an interest in the unique history and literature of Okinawa and Jeju Islands. The Battle of Okinawa at a late stage of the Asia-Pacific theatre of World War II, and the indiscriminate violence in the 4.3 Jeju Massacre directly show the shared tragedy of the two islands; furthermore, they are are both located on the frontier of a nation's authority, and thus are symbolic cases. This thesis analyzes Oshiro Tatsuhiro's Island of the Gods and Hyun, Ki Young's Sooni's Uncle, both directly deal with the tragedy of two different but analogous incidents, and question the difference in memory struggle and definitions. Thus, though both novels show a similarity in focusing on and exposing the forbidden memory of mass suicide and massacre, the methods of suggesting the course of memory struggle are different. For example, in contrast to Hyun who took a different approach from the fury, accusations, and violence of South Korea to espoused forgiveness and reconciliation, Oshiro showed the changes in the form of responding to the mainland Japan.

The Effect of BPL (Brand Placement) in Movies on Short-term and Long-term Memory (영화 속 BPL이 단기기억과 장기기억에 미치는 효과)

  • Nam, Kyeong-Tae
    • Korean Journal of Communication Studies
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    • v.18 no.1
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    • pp.165-193
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    • 2010
  • The current study has significance in that it increases our understanding of BPL effectiveness by adding long-term memory dependent variables to widely used short-term memory variables. Furthermore, two unit of analysis of the current study, subject and BPL, made richer analysis possible as compared to previous studies. The result showed that BPL was effective in short-term recognition(52.8% of BPLs), long-term recognition(44.4% of BPLs), and long-term recall(30.6% of BPLs). The further result showed that audiovisual BPL, closeup BPL, long-exposed brand, leading actor using brand were more effective than other kinds of BPL. On the other hand, preference for the movie and preference for the actor were not significant factors in increasing people's memory of the brand name. Future researchers should settle the confusion existed in this field by inventing a more elaborate research design and exploring mediating and moderating variables in the subject of BPL effectiveness.

Verification of Behavior Characteristics of Precompression Polyurethane Damper Using Superelastic Shape Memory Alloy (초탄성 형상기억합금을 적용한 선행압축 폴리우레탄 댐퍼의 거동 특성 검증)

  • Kim, Young-Chan;Hu, Jong-Wan
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.43 no.4
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    • pp.413-420
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    • 2023
  • Among the seismic structures for reducing earthquake damage, the seismic control structure is a technology that can efficiently improve seismic performance and secure economic feasibility by simply applying a damper. However, existing dampers have limitations in terms of durability due to required seismic performance and material plasticity. In this study, we proposed a polyurethane damper with enhanced recovery characteristics by applying precompression to polyurethane, which basically shows elastic characteristics, and applying superelastic shape memory alloy (SSMA). To verify the characteristics of the polyurethane damper, the concept was first established, and the design details were completed by selecting SSMA and steel, and selecting the precompression size as design variables. In addition, structural tests were conducted to derive response behavior and analyze force resistance performance, residual displacement, recovery rate, and energy dissipation capacity. As a result of the analysis, the polyurethane damper showed that various performances improved when the SSMA wire was applied and the precompression increased.

The effect of semantic categorization of episodic memory on encoding of subordinate details: An fMRI study (일화 기억의 의미적 범주화가 세부 기억의 부호화에 미치는 영향에 대한 자기공명영상 분석 연구)

  • Yi, Darren Sehjung;Han, Sanghoon
    • Korean Journal of Cognitive Science
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    • v.28 no.4
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    • pp.193-221
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    • 2017
  • Grouping episodes into semantically related categories is necessary for better mnemonic structure. However, the effect of grouping on memory of subordinate details was not clearly understood. In an fMRI study, we tested whether attending superordinate during semantic association disrupts or enhances subordinate episodic details. In each cycle of the experiment, five cue words were presented sequentially with two related detail words placed underneath for each cue. Participants were asked whether they could imagine a category that includes the previously shown cue words in each cycle, and their confidence on retrieval was rated. Participants were asked to perform cued recall tests on presented detail words after the session. Behavioral data showed that reaction times for categorization tasks decreased and confidence levels increased in the third trial of each cycle, thus this trial was considered to be an important insight where a semantic category was believed to be successfully established. Critically, the accuracy of recalling detail words presented immediately prior to third trials was lower than those of followed trials, indicating that subordinate details were disrupted during categorization. General linear model analysis of the trial immediately prior to the completion of categorization, specifically the second trial, revealed significant activation in the temporal gyrus and inferior frontal gyrus, areas of semantic memory networks. Representative Similarity Analysis revealed that the activation patterns of the third trials were more consistent than those of the second trials in the temporal gyrus, inferior frontal gyrus, and hippocampus. Our research demonstrates that semantic grouping can cause memories of subordinate details to fade, suggesting that semantic retrieval during categorization affects the quality of related episodic memory.

Functional Brain Mapping Using $H_2^{15}O$ Positron Emission Tomography ( I ): Statistical Parametric Mapping Method ($H_2^{15}O$ 양전자단층촬영술을 이용한 뇌기능 지도 작성(I): 통계적 파라메터 지도작성법)

  • Lee, Dong-Soo;Lee, Jae-Sung;Kim, Kyeong-Min;Chung, June-Key;Lee, Myung-Chul
    • The Korean Journal of Nuclear Medicine
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    • v.32 no.3
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    • pp.225-237
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    • 1998
  • Purpose: We investigated the statistical methods to compose the functional brain map of human working memory and the principal factors that have an effect on the methods for localization. Materials and Methods: Repeated PET scans with successive four tasks, which consist of one control and three different activation tasks, were performed on six right-handed normal volunteers for 2 minutes after bolus injections of 925 MBq $H_2^{15}O$ at the intervals of 30 minutes. Image data were analyzed using SPM96 (Statistical Parametric Mapping) implemented with Matlab (Mathworks Inc., U.S.A.). Images from the same subject were spatially registered and were normalized using linear and nonlinear transformation methods. Significant difference between control and each activation state was estimated at every voxel based on the general linear model. Differences of global counts were removed using analysis of covariance (ANCOVA) with global activity as covariate. Using the mean and variance for each condition which was adjusted using ANCOVA, t-statistics was performed on every voxel To interpret the results more easily, t-values were transformed to the standard Gaussian distribution (Z-score). Results: All the subjects carried out the activation and control tests successfully. Average rate of correct answers was 95%. The numbers of activated blobs were 4 for verbal memory I, 9 for verbal memory II, 9 for visual memory, and 6 for conjunctive activation of these three tasks. The verbal working memory activates predominantly left-sided structures, and the visual memory activates the right hemisphere. Conclusion: We conclude that rCBF PET imaging and statistical parametric mapping method were useful in the localization of the brain regions for verbal and visual working memory.

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Psychophysiologic Responses to Event Imagery in Traffic Accident Related Patients (교통사고관련 환자에서 사건상상에 대한 정신생리반응)

  • Chung, Sang-Keun;Choi, Myong-Su;Hwang, Ik-Keun
    • Sleep Medicine and Psychophysiology
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    • v.8 no.1
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    • pp.45-51
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    • 2001
  • Objectives: The experience of traffic accident is a kind of the psychosocial stressors to person. The traffic accident-related patients may show the psychophysiologic hyperarousal. So we examined the differences of psychophysiologic response between patients with and without the memory of experienceing a traffic accident. Methods: Twenty-four traffic accident-related patients were divided into two groups according to ther memory of a traffic accident. In psychological assessment, levels of anxiety and depression were evaluated by State-Trait Anxiety Inventory, Beck's Depression Inventory, and Hamilton Rating Scales For Anxiety and Depression. Heart rate, electrodermal response (EDR), and electromyographic activity (EMG) were measured by biofeedback system, and systolic and diastolic blood pressure by automated vital sign monitor during baseline, task, and rest periods. We utilized script-driven imagery technique as a stressful task. The patients listened to the script describing their own traffic accident experience and were instructed to imagine the event during the task period. Statistically analytic data were obtained from the differences of psychological and psychophysiologic data between two groups. Results: The memory group did not show significantly higher EDR than the none memory group, but showed higher tendency during baseline, imagery, and rest periods. The memory group showed significantly lower EMG than the none memory group during rest period. However, there were no differences in other psychophysiologic reponses between the two groups. Conclusion: Our results showed that the memory group had higher tendency in autonomic arousal level such as electrodermal response than the none memory group. We suggest that physicians need to minimize repetitive imagery of traffic accident (reexperience), and decrease the autonomic hyperarousal in the treatment of traffic accident-related patients.

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A Study on the Meaning of Zelkova serrata as a Medium of Place Memory - Focused on the Natives of the Village and the Migrant of Keangnam Apartment in Dogok-dong - (장소기억의 매개로서 느티나무의 의미 고찰 - 역말 원주민과 도곡동 경남아파트 이주민을 중심으로 -)

  • Hamm, Yeon-Su;Sung, Jong-Sang
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.39 no.3
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    • pp.42-55
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    • 2021
  • This study investigated the memories of the natives and the migrants who had been living with the 760-year-old Zelkova serrata located in the Keangnam Apartment Complex in Dogok 1-dong. Place memory is a newly illuminated concept since the 1980s, and is also used as a new research methodology for studying and recording multi-layered memories left in a place based on feelings and traces of vivid memories. The urban development of Gangnam, which began in the 1970s, quickly changed rural to apartment complexes. The natives of Yeokmal were scattered throughout the country, and new migrants moved in. In the process, zelkova serrata was managed in different ways from time to time, and residents also establish relationship in different ways. Natives used to take a rest in the tree or swing at Dan-o, and recognized it as a place to receive the god during the village ritual. In other words, they shared the entire process of life and death and were given various roles depending on the lives of the residents. It is also a direct experience that was experienced in detail and a place where collective memories of residents are melted. On the other hand, with the construction of Keangnam Apartment, the management of zelkova tree has become stricter, making it impossible for migrants to access. Migrants have come to enjoy zelkova serrata visually, and the annual Yeokmal Traditional Festival makes common memories in the city. In addition, many people personified trees and received mental comfort. In addition, the nature of the old big tree was highlighted in the background of the city, and the symbol of "uniqueness and speciality" was newly formed, which led to the formation of pride and attachment. Through the memories of the two subjects' zelkova tree, we were able to examine the memories of the tree value, and management of protected tree in the city.

Performance Characteristics of Some Signal Detectors in Weakly Dependent Noise (약의존성 잡음에서 몇가지 신호검파 방식들의 성능특성)

  • 김태현;김광순;류상우;송익호
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.21 no.1
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    • pp.155-160
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    • 1996
  • In this paper, we consider the discrete-time known signal detection problem under the presence of additive noise exhibiting weak dependence. We derive the locally optimum, memoryless, and one-memory detector test statistics under a seakly dependent noise model. The performance characteristics of the one-memory detector can achieve almost optimum performance at the expense of only one memory unit under the weakly dependent noise model.

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