• 한국콘텐츠학회논문지
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• 제16권9호
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• pp.117-126
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• 2016

본 연구의 목적은 상이한 피드백 제공방식과 피드백 제공자와 수용자 간의 강화경험이 품질관리 수행에 미치는 영향을 검증하는 것이었다. C 대학 및 대학원의 재학생 100명을 대상으로 실험을 수행하였다. 본 연구에서는 컴퓨터를 사용하여 상품을 생산하는 가상의 휴대폰 조립과제를 사용하였다. 본 연구의 독립변인은 두 가지의 피드백 제공방식(면대면과 이메일)과 강화경험의 유무였으며, 종속변인으로는 참가자들의 수행 정확도를 측정하였다. $2{\times}2$ 집단 간 설계가 적용되었으며 실험은 총 4회기로써 사전회기 1회기와 실험회기 3회기로 각 회기는 30분으로 구성되었다. 연구 결과 강화경험을 가지고 있는 경우 두 가지 피드백의 품질관리 정확도 향상 효과가 유사하게 나타났으나 강화경험이 없는 경우에는 면대면 피드백이 품질관리 정확도 향상에 더 효과적인 것으로 나타났다. 이러한 결과를 통해 두 가지 피드백 제공방식과 피드백 제공자와 수용자 간의 강화경험에 따라 수행에 미치는 피드백의 효과가 달라질 수 있음을 알 수 있다.

• Journal of Audiology & Otology
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• 제23권3호
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• pp.121-128
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• 2019

Background and Objectives: There is a scant evidence on the use of simulations in audiology (especially in Malaysia) for case-history taking, although this technique is widely used for training medical and nursing students. Feedback is one of the important components in simulations training; however, it is unknown if feedback by instructors could influence the simulated patient (SP) training outcome for case-history taking among audiology students. Aim of the present study is to determine whether the SP training with feedback in addition to the standard role-play and seminar training is an effective learning tool for audiology case-history taking. Subjects and Methods: Twenty-six second-year undergraduate audiology students participated. A cross-over study design was used. All students initially attended two hours of seminar and role-play sessions. They were then divided into three types of training, 1) SP training (Group A), 2) SP with feedback (Group B), and 3) a non-additional training group (Group C). After two training sessions, the students changed their types of training to, 1) Group A and C: SP training with feedback, and 2) Group B: non-additional training. All the groups were assessed at three points: 1) pre-test, 2) intermediate, and 3) post-test. The normalized median score differences between and within the respective groups were analysed using non-parametric tests at 95% confidence intervals. Results: Groups with additional SP trainings (with and without feedback) showed a significantly higher normalized gain score than no training group (p<0.05). Conclusions: The SP training (with/without feedback) is a beneficial learning tool for history taking to students in audiology major.

• 대한청각학회지
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• 제23권3호
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• pp.121-128
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• 2019

Background and Objectives: There is a scant evidence on the use of simulations in audiology (especially in Malaysia) for case-history taking, although this technique is widely used for training medical and nursing students. Feedback is one of the important components in simulations training; however, it is unknown if feedback by instructors could influence the simulated patient (SP) training outcome for case-history taking among audiology students. Aim of the present study is to determine whether the SP training with feedback in addition to the standard role-play and seminar training is an effective learning tool for audiology case-history taking. Subjects and Methods: Twenty-six second-year undergraduate audiology students participated. A cross-over study design was used. All students initially attended two hours of seminar and role-play sessions. They were then divided into three types of training, 1) SP training (Group A), 2) SP with feedback (Group B), and 3) a non-additional training group (Group C). After two training sessions, the students changed their types of training to, 1) Group A and C: SP training with feedback, and 2) Group B: non-additional training. All the groups were assessed at three points: 1) pre-test, 2) intermediate, and 3) post-test. The normalized median score differences between and within the respective groups were analysed using non-parametric tests at 95% confidence intervals. Results: Groups with additional SP trainings (with and without feedback) showed a significantly higher normalized gain score than no training group (p<0.05). Conclusions: The SP training (with/without feedback) is a beneficial learning tool for history taking to students in audiology major.

• 정보처리학회논문지B
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• 제13B권4호
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• pp.383-392
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• 2006

본 논문에서는 영역기반 영상검색의 성능 향상을 위한 피드백 알고리즘으로 다중 클래스를 갖는 확률적 신경망(Probabilistic Neural Networks)을 이용한 방법론을 제안하고 이를 영역기반 영상 검색 시스템인 FRIP(Finding Regions In the Pictures) 시스템에 적용하였다. 본 논문에서 제안하는 피드백 알고리즘은 특정 벡터가 독립적이라는 가정을 할 필요가 없으며 보다 상세한 분류를 위해 추가적인 클래스들을 추가할 수 있도록 허용하고 있다. 또한 단지 4개 층(layer)만을 가지고 있음으로 학습을 위한 계산시간이 적게 든다는 장점이 있다. 추가적으로 다음단계에서의 성능 향상을 위해 분류 단계에서 사용자의 이전 피드백 행동을 모두 히스토리(history)로 모두 기억시켜 놓고 다음 단계를 위한 가중치 학습을 위해 사용하도록 한다. 히스토리를 사용함으로써 제안하는 알고리즘은 사용자의 주관적 의도를 보다 정확하게 파악 할 수 있을 뿐만 아니라 학습을 위해 이전 단계만을 사용 했을 때 발생할 수 있는 성능 감소를 막을 수 있다. 본 논문에서는 Corel-photo CD에서 3000장의 자연 영상을 무작위로 추출하여 기존의 방법론들과 제안하는 방법론의 성능을 측정하여 본 논문에서 제안하는 방법론이 성능이 우수함을 증명하였다.

• 제어로봇시스템학회논문지
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• 제4권5호
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• pp.608-615
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• 1998

In this paper a second-order iterative learning control algorithm with feedback is proposed for the trajectory-tracking control of nonlinear dynamic systems with unidentified parameters. In contrast to other known methods, the proposed teaming control scheme utilize more than one past error history contained in the trajectories generated at prior iterations, and a feedback term is added in the learning control scheme for the enhancement of convergence speed and robustness to disturbances or system parameter variations. The convergence proof of the proposed algorithm is given in detail, and the sufficient condition for the convergence of the algorithm is provided. We also discuss the convergence performance of the algorithm when the initial condition at the beginning of each iteration differs from the previous value of the initial condition. The effectiveness of the proposed algorithm is shown by computer simulation result. It is shown that, by adding a feedback term in teaming control algorithm, convergence speed, robustness to disturbances and robustness to unmatched initial conditions can be improved.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1207-1212
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• 2009

The flexible multibody dynamic model of an EMS-type Maglev vehicle is necessary in design stage to predict its behavior, load history and levitation performance. Especially in EMS-type Maglev vehicle, the body flexibility of its bogie with electromagnets affects the levitation performance because its feedback control system is more sensitive to vibration of bogie structure. The flexible multibody dynamic model of a 1/2 Maglev vehicle under test is presented. The basic modeling procedure is almost the same as in other applications. However, the feedback control system model unique in EMS-type maglev vehicle must be included in the model. With the model proposed in this study, the dynamic behavior, load history and levitation performance are more precisely predicted. This model could realize the virtual prototyping in EMS-type Maglev vehicle area.

• 한국멀티미디어학회논문지
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• 제25권4호
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• pp.640-648
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• 2022

Menopausal women have to care for their health. Menopause is a symptom that needs to be managed in the long term, which requires safe and economical treatment even after long term use. This study proposes digital-based exercise therapy. This study also suggests resistance exercise and walking exercise methods according to the proof of previous studies. It provides motivational contents for those who cannot perform regularly. As motivational methods, self-efficacy and narrative-based history methods are accepted. Self-efficacy is improved through voice agents feedback during exercise. Feedback is a type of messages such as encouragement and motivation. The narrative-based history consists of characters of visualization that improves through values, which leveraged by the exercise.

• 인지과학
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• 제28권3호
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• pp.173-191
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• 2017

The theories of cultural evolution hold subtly or clearly different stances about definition of culture, pattern of cultural evolution, biases that affect cultural evolution, and relationship between culture and organism. However, the cultural evolution theories have a common problem to solve: As the evolutionary theory of life tries to explain the early steps and the origin of life, the cultural evolution theories also must explain the early steps of the cultural evolution and the role of the human capability that makes cultural evolution possible. Therefore, explanations of the human's unique traits including the cultural ability are related to determine which one is the most plausible among many cultural evolution theories. Theories that tried to explain human uniqueness commonly depict the coevolution of gene (organism) and culture. We will explicitly call the niche construction theory and the dual inheritance theory the 'gene-culture co-evolutionary theory'. In these theories, the most important concept is the 'concept of positive feedback'. In this paper, we distinguish between core positive feedback and marginal positive feedback, according to whether the trait that the concept of positive feedback explains is the trait of human uniqueness. Both types of positive feedback effectively explain the generality of human uniqueness and the diversity of human traits driven by cultural groups. However, this positive feedback requires an end, in contrast to negative feedback which can be continued in order to maintain homeostasis. We argue that the co-evolutionary process in the gene-culture co-evolutionary theories include only the positive feedback, not covering the cultural evolution after the positive feedback. This thesis strives to define the coevolution concept more comprehensively by suggesting the potential relationships between gene and culture after the positive feedback.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 봄 학술발표논문집 Vol.29 No.1 (B)
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• pp.280-282
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• 2002

본 논문은 웹 문서 여과시 사용자 모델링을 위해 사용되는 연관성 피드백 방법을 강화 학습 프레임웍에서 분석하고 강화학습 기반의 새로운 연관성 피드백 알고리즘을 제안한다. 제안된 방법은 강화 학습 프레임책상에서 기존의 방법을 일반화한 것으로 기존의 연관성 피드백 방법이 현재의 프로파일만을 상태로 사용하는 데 비해 과거 history부터 얻는 추가 정보를 사용하는 방법이다

• Journal of the Korean Data and Information Science Society
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• 제18권2호
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• pp.375-384
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• 2007

As teachings that use the ICT are more popular, many studies on the dynamic geometry environment(DGE) are under way. An important factor emphasized in the studies is to practical use learning activities of learners. In this study, we first define the learning history data in DGE. Second we develop a prototype of the DGE that is able to collect and analyze the learning history data automatically. The environment enables not only to grasp leaning history but also to create and manage new learning objects.