• Title/Summary/Keyword: Learning and Memory

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Vaccinium uliginosum L. Improves Amyloid β Protein-Induced Learning and Memory Impairment in Alzheimer's Disease in Mice

  • Choi, Yoon-Hee;Kwon, Hyuck-Se;Shin, Se-Gye;Chung, Cha-Kwon
    • Preventive Nutrition and Food Science
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    • v.19 no.4
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    • pp.343-347
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    • 2014
  • The present study investigated the effects of Vaccinium uliginosum L. (bilberry) on the learning and memory impairments induced by amyloid-${\beta}$ protein ($A{\beta}P$) 1-42. ICR Swiss mice were divided into 4 groups: the control ($A{\beta}40$-1A), control with 5% bilberry group ($A{\beta}40$-1B), amyloid ${\beta}$ protein 1-42 treated group ($A{\beta}1$-42A), and $A{\beta}1$-42 with 5% bilberry group ($A{\beta}1$-42B). The control was treated with amyloid ${\beta}$-protein 40-1 for placebo effect, and Alzheimer's disease (AD) group was treated with amyloid ${\beta}$-protein 1-42. Amyloid ${\beta}$-protein 1-42 was intracerebroventricular (ICV) micro injected into the hippocampus in 35% acetonitrile and 0.1% trifluoroacetic acid. Although bilberry added groups tended to decrease the finding time of hidden platform, no statistical significance was found. On the other hand, escape latencies of $A{\beta}P$ injected mice were extended compared to that of $A{\beta}40$-1. In the Probe test, bilberry added $A{\beta}1$-42B group showed a significant (P<0.05) increase of probe crossing frequency compared to $A{\beta}1$-42A. Administration of amyloid protein ($A{\beta}1$-42) decreased working memory compared to $A{\beta}40$-1 control group. In passive avoidance test, bilberry significantly (P<0.05) increased the time of staying in the lighted area compared to AD control. The results suggest that bilberry may help to improve memory and learning capability in chemically induced Alzheimer's disease in experimental animal models.

An Analysis on Learning Effects of Character Animation Based-Mobile Foreign Language Vocabulary Learning App (캐릭터 애니메이션 기반 모바일 외국어 어휘 학습 앱 효과 분석)

  • Kim, Insook;Choi, Minsuh;Ko, Hyeyoung
    • Journal of Korea Multimedia Society
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    • v.21 no.12
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    • pp.1526-1533
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    • 2018
  • This study aims to provide implications for mobile foreign language vocabulary learning app by analyzing the effects of mobile vocabulary learning app based on character animation. For this purpose, we applied the learning application designed with character animation and text, and the application designed with text only to two groups of learners, and analyzed the effect. As a result, we found that application designed with character animation and text was useful in recognition frequency and duration concerning learning. Regarding learning outcomes, we found that it is useful not only in memory but also in learning interest and motivation. This study provides implications for learning method and design development of mobile-based foreign language vocabulary learning application which actively using recently.

Acoustic Signal Classifier Design using Dictionary Learning (딕셔너리 러닝을 이용한 음파 신호 분류기 설계)

  • Park, Sung Min;Sah, Sung Jin;Oh, Kwang Myung;Lee, Hui Sung
    • Journal of Auto-vehicle Safety Association
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    • v.8 no.1
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    • pp.19-25
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    • 2016
  • As new car technology is developing, temporal interaction is needed in automotive. Rhythmic pattern is one of the practical examples of temporal interaction in vehicle. To recognize rhythmic pattern and its input medium, dictionary learning is applicable algorithm. In this paper, performance and memory requirement of the learning algorithm is tested and is sufficiently good for use this acoustic sound.

ON HIPPOCAMPUS PROTOCOL BY A BRAIN WAVE ANALYSIS IN THE FIELD OF MEMORY FOR A MUSICAL THERAPY

  • Kengo-Shibata;Takashi-Azakami
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 1999.06a
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    • pp.95-96
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    • 1999
  • The authors have considered the 1/f fluctuation of vial rhythm with $1/f\beta$ spectrum of $\alpha$ wave in relation to the invigoration for the learning memory by paid their attention to the hippocampus protocol in this paper. At the first clinical experiment, the data of the remembrance test at short period is able to make as the foundation of the repeat memory. It can replace this memory with long period memory through the hippocampus by the superposition of the same memory-nerve circuits.

Performance Analysis and Identifying Characteristics of Processing-in-Memory System with Polyhedral Benchmark Suite (프로세싱 인 메모리 시스템에서의 PolyBench 구동에 대한 동작 성능 및 특성 분석과 고찰)

  • Jeonggeun Kim
    • Journal of the Semiconductor & Display Technology
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    • v.22 no.3
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    • pp.142-148
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    • 2023
  • In this paper, we identify performance issues in executing compute kernels from PolyBench, which includes compute kernels that are the core computational units of various data-intensive workloads, such as deep learning and data-intensive applications, on Processing-in-Memory (PIM) devices. Therefore, using our in-house simulator, we measured and compared the various performance metrics of workloads based on traditional out-of-order and in-order processors with Processing-in-Memory-based systems. As a result, the PIM-based system improves performance compared to other computing models due to the short-term data reuse characteristic of computational kernels from PolyBench. However, some kernels perform poorly in PIM-based systems without a multi-layer cache hierarchy due to some kernel's long-term data reuse characteristics. Hence, our evaluation and analysis results suggest that further research should consider dynamic and workload pattern adaptive approaches to overcome performance degradation from computational kernels with long-term data reuse characteristics and hidden data locality.

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The Effects of Conflict Resolution Strategies on Relationship Learning and Performance (갈등해결전략이 관계학습과 성과에 미치는 영향)

  • Noh, Won-Hee;Song, Young-Wook
    • Journal of Distribution Research
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    • v.17 no.3
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    • pp.93-113
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    • 2012
  • Early conflict research in channel and organization area have focused on the definition of conflict construct, its cause, consequence and identified conflict resolution management. Recent studies about conflict, however, have explored new assumption of complexity, a multidimensional conflict construct, contextual conflict management strategies, positive and negative conflict/consequence, and the conflict resolution strategy. Although many literatures exists on channel conflict resolution, little research has been done about relationship learning and performance from conflict resolution perspective. This study explores how channel members can achieve a relationship learning, as a conflict resolution mechanism, which enhance co-created value in marketing channel relationship. Therefore we propose that conflict resolution strategies(collaborating behavior and avoiding behavior) influence channel performance(effectiveness and efficiency) through relationship learning processes(learning via information exchange, joint interpretation and coordination, relationship-specific knowledge memory), in view of buyer-seller relationship. The research model is shown at

    . A total of twelve hypotheses were established through prior studies dealing with conflict and relationship marketing theory. Then we drove conceptual research model. For the purpose of empirical testing, we managed to obtain the list of suppliers of 24 retailers from 5 retailer formats, such as department store, discount store, convenience store, TV home-shopping and internet shopping mall. They were asked to respond to the survey via face-to-face interview conducted by a professional research company. During the one month period of June 2009, we were able to collect data form 490 suppliers. The respondent were restricted to direct dealing authorities and manager with at least three months of dealing experience with retailers. Structural equation modeling on the basis of the results of survey were done to analyze. As a result, eight among twelve hypotheses were supported. The analysis result indicated that collaborating behavior had positive effect on three forms of relationship learning, but avoiding behavior has negative effect on only information exchange. Joint interpretation and coordination, relationship-specific knowledge memory had positive effect on relationship performances, but information exchange had no effect on performances. The results support our basic thesis that the use of conflict resolution strategies have different effect on developing relationship learning, which leads to channel performances. In particular, collaborating behavior is positively related to relationship learning, and avoidance behavior is negatively related to information exchange. Relationship learning is partially contributed to channel performance.

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Optimization of Cyber-Attack Detection Using the Deep Learning Network

  • Duong, Lai Van
    • International Journal of Computer Science & Network Security
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    • v.21 no.7
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    • pp.159-168
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    • 2021
  • Detecting cyber-attacks using machine learning or deep learning is being studied and applied widely in network intrusion detection systems. We noticed that the application of deep learning algorithms yielded many good results. However, because each deep learning model has different architecture and characteristics with certain advantages and disadvantages, so those deep learning models are only suitable for specific datasets or features. In this paper, in order to optimize the process of detecting cyber-attacks, we propose the idea of building a new deep learning network model based on the association and combination of individual deep learning models. In particular, based on the architecture of 2 deep learning models: Convolutional Neural Network (CNN) and Long Short Term Memory (LSTM), we combine them into a combined deep learning network for detecting cyber-attacks based on network traffic. The experimental results in Section IV.D have demonstrated that our proposal using the CNN-LSTM deep learning model for detecting cyber-attacks based on network traffic is completely correct because the results of this model are much better than some individual deep learning models on all measures.

Memory Enhancing and Antioxidant Properties of Fermented Chongmyung-tang

  • Nam, Jung-Il;Park, Yeun-Woo;Jeon, Hoon
    • Natural Product Sciences
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    • v.16 no.2
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    • pp.93-98
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    • 2010
  • The Chongmyung-tang (CMT) has been used as an oriental herbal medicine for the purpose of enhanced learning and memory. Recently, since fermentation may give a positive effect on pharmacological actions of herbal medicine, many studies are focused to find fermented medicinal herbs with improved bioactivity. In the present study, memory enhancing, antioxidant and reducing power activity of CMT and fermented CMT with Aspergillus oryzae (FCMT-A) or Saccharomyces cerevisiae (FCMT-S) were determined. To evaluate the memory enhancing activities of CMT, FCMT-A and FCMT-S, we performed passive avoidance test using scopolamine induced amnesia model. Administration of CMT, FCMT-A and FCMT-S showed a significant memory enhancing effect about 72.5, 78.3, 71.8% of the normal group respectively. CMT, FCMT-A and FCMT-S also exhibited strong $DPPH{\bullet}$, ${\bullet}{O_2}^-$, $NO^{\codt}$, $ABTS^{{\cdot}+}$ scavenging activities and reducing ower. It was also found that fermented CMT has slightly higher scavenging activities on $DPPH{\bullet}$, $ABTS^{{\cdot}+}$ radicals compared to CMT. These results revealed that CMT, FCMT-A and FCMT-S had memory enhancing and radical scavenging activities. In addition, the fermentation of CMT was more or less important for elevated memory enhancing and antioxidant activities of CMT.

Study on the Model Development for Experiential Learning with Ubiquitous Everyday English (유비쿼터스 생활영어 체험학습장 교수-학습 모형 개발 연구)

  • Baek, Hyeon-Gi;Kim, Su-Min;Kang, Jung-Hwa
    • Journal of Digital Convergence
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    • v.7 no.3
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    • pp.49-60
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    • 2009
  • The aim of this study was to develop a model for teaching-teaming by applying Ubiquitous at a learning experience field, in which connect characteristics of both ubiquitous application learning and experience teaming, making use of them. A literature survey of concepts was conducted, with the main areas to find out relationships between ubiquitous application learning and experience learning. Experience learning by applying ubiquitous learning methods maximizes its efficiency of experience learning in considering ubiquitous learning methods's characteristics of dynamic, interaction, sharing. Also it makes communications through positive participation and active interaction, and leads to a process of internal examination. The research data suggests that critical factors of experiencing learning applying ubiquitous are acquiring information and memory, information integration and exquisiteness, emotional and social activity, producing activity, help activity.

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The Effects of Spaced Retrieval Training with Errorless Learning on Memory, IADL, Depression in Mild Cognitive Impairment: Single-Subject Design (오차배제훈련을 병행한 시간차 회상훈련이 경도인지장애 환자의 기억력에 미치는 효과와 수단적 일상생활(IADL) 및 우울에 미치는 영향: 단일대상연구)

  • Kim, Yeonju;Park, Hae Yean
    • Therapeutic Science for Rehabilitation
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    • v.4 no.2
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    • pp.73-83
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    • 2015
  • Objective: The purpose of this study was to examine the effect of the Spaced Retrieval Training (SRT) with Errorless learning on the elderly with Mild Cognitive Impairment (MCI)'s memory, Instrumental Activities Daily Living, Depression symptom. Methods: A single subject experimental research with ABA design was conducted in this study on the 78-years-old person who was enrolled in day-care center. The total experimental sessions were 16 which composed of 3 sessions for baseline, 10 sessions for intervention and 3 sessions for second baseline. K-Auditory Verbal Learning Test (K-AVLT) was measured for the memory each session. For the measurement of cognitive function, IADL, depression Symptom, Korean version of Montreal Cognitive Assessment (MoCA-K), Philadelphia Geriatric Center Instrumental Activities Daily Living (PGC IADL), Geriatric Depression Scale Korean Version (GDS-K) was measured at pre-post test. Results: Memory at the phase B was improved than Phase A. At the phase B, the scores trend was ascending, but after the intervention at the phase A', the scores trend was descending. The scores of MoCA-K were improved, PGC IADL were maintained, GDS-K were decreased. Conclusion: This results support the evidence of the SRT with EL on the elderly with MCI in the clinical setting. In the future, the correlation researches about MCI's memory and other functional factors will be needed for effective occupational therapy service.