• Title/Summary/Keyword: 적응적 기대

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Design and Development of Adaptive Online Learning Management System for Harmony (온라인 적응형 화성학 학습을 위한 학습관리시스템 설계 및 개발)

  • Park, Jong-Won;Kim, Dong-Sam;Kim, Jun-Ho;Song, Moo Kyoung
    • Journal of the Korea Convergence Society
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    • v.11 no.8
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    • pp.139-145
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    • 2020
  • Due to the rapid development of computer technology, online learning using ICT technology is already quickly settling in our lives. Music education was conducted mainly in an offline-based environment, but research is being conducted to switch to online because there is no time and space constraint of online education and interactive education led by learners is possible. In this study, we propose design and implement an adaptive learning system to enable adaptive learning online among music education. This system has the following advantages. First, by providing an LMS-based platform, one can solve the social education problem corresponding to economic and geographical factors. Second, both objective learning feedback provided automatically by the online adaptive harmony learning system and teaching feedback. Third, learners can be provided with recommended answers to given harmony exercises. The adaptive online learning system of harmony will lead professors and learners to effectively teach and study.

The Regional Human Ecosystem and Cultural Adaptation in Rural Korea (한국 농촌의 지역인간생태계와 문화적 적응)

  • 류제현
    • Journal of the Korean Geographical Society
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    • v.33 no.spc
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    • pp.697-707
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    • 1998
  • 인간과 환경과의 관계의 역사적 변천을 인구변화와 자원관리의 측면에서 분석하는 기존 관점은 인구기초이론, 기술기초이론, 시장기초이론 등으로 분류된다. 이러한 관점은 어느 한가지 변수를 독립 변수로 가정하는 입장을 취하므로 흔히 '단일요소이론'이라고 불리며, 제각기 장점이 있기는 하지만 현실 세계의 복합성을 단지 부분적으로 설명하는데 그치는 문제점을 내포하고 있다. 현실세계의 모든 사건은 개방된 체계 속에서 발생하기 때문에, 모든 사건은 단선적인 인과관계로 파악될 수 없을 만큼 서로 복합하게 얽혀 있다. 이에 대하여 문화생태이론은 단일요소이론의 그러한 한계를 극복하고 현실세계의 복합성을 분석할 수 있는 개념과 방법을 제시하고 있다. 문화생태이론은 실로 인간과 환경과의 관계가 역사적으로 변천해 온 과정을 탐구하는데 적합한 개념과 방법을 장점으로 내세우는 새로운 관점이라 할 수 있다. 문화생태이온은 인구, 기술, 시장, 제도 등 요소의 중요성이 시간과 장소에 따라 다를 수 있다는 가정 하에서 어떠한 요소라도 어느 한 장소와 시점에서 인간과 환경과의 관계의 변화를 주도할 수 있다고 기대한다. 한국 농촌의 인간과 환경과의 관계를 탐구함에 있어서 활성되어야 할 문화생태이론의 기초적인 개념은 '지역인간생태계'와 '문화적 적응'이다. 한국 농촌의 지역인간생태계는 그 특성상 인구, 농업, 시장, 제도로 구성되어 있다고 볼 수 있다. 문화적 적응이란 변화하는 환경 속에서 사회구성원들의 환경에 대한 적응도를 높일 수 있는 행동양식을 새로이 선택하는 행위를 일컫는다. 한국 농촌에서는 적응전략이란 농업의 집약화와 상업화 또는 산아제한과 인구이동이라는 측면에서 분석될 수 있을 것이다. 생존, 기술, 취락형태, 토지이용, 무역이나 교역 등은 적응전략을 분석하는데 간접적인 자료를 제공해 줄 것이다.

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A Sender-oriented Automatic Rate Adaptation Scheme in IEEE 802.11 WLANs (IEEE 802.11 WLAN에서 송신단 기반 전송률 적응기법)

  • Lee, Sun-Hun;Chung, Kwang-Sue
    • Journal of KIISE:Information Networking
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    • v.36 no.2
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    • pp.143-152
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    • 2009
  • IEEE 802.11 WLANs provide multiple transmission rates to improve the system throughput by adapting the transmission rate to the current wireless channel conditions. Many rate adaptation schemes have been proposed because IEEE 802.11 standard does not contain any specifications for the rate adaptation scheme. In this paper, in order to overcome limitations of the previous research, we propose a new rate adaptation scheme called SARA(Sender-oriented Automatic Rate Adaptation). The SARA scheme, a proposed rate adaptation scheme, appropriately adjusts the data transmission rate based on the estimated wireless channel conditions, specifically the measured RSSI at the sender-side. Moreover it continuously updates the thresholds for selecting the transmission rate and selectively enforces the RTS/CTS exchanges to adapt the changes in the wireless channel conditions. Through the performance evaluations, we prove that the SARA scheme overcomes the limitations of the previous research and improves the wireless link utilization.

Nonlinear Adaptive PID Controller based on a Cell-mediated Immune Response and a Gradient Descent Learning (세포성 면역 반응과 경사감소학습에 의한 비선형 적응 PID 제어기)

  • Park Jin-Hyun;Lee Tae-Hwan;Choi Young-Kiu
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.1
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    • pp.88-95
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    • 2006
  • PID controllers, which have been widely used in industry, have a simple structure and robustness to modeling error. But They we difficult to have uniformly good control performance in system parameters variation or different velocity command. In this paper, we propose a nonlinear adaptive PID controller based on a cell-mediated immune response and a gradient descent learning. This algorithm has a simple structure and robustness to system parameters variation. To verify performances of the proposed nonlinear adaptive PID controller, the speed control of nonlinear DC motor is performed. The simulation results show that the proposed control systems are effective in tracking a command velocity under system parameters variation.

The Influence of SNS Addiction Tendency and Mental Health on Adjustment to College life (SNS 중독경향성과 정신건강이 대학생활 적응에 미치는 영향)

  • Baek, Sun-Sook;Cho, Ju-Yeon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.7
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    • pp.77-85
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    • 2016
  • The present study evaluated the SNS addiction tendency, mental health, and the student's adjustment to college life to identify the correlations between each of these independent variables on the dependent variable, the adjustment to university life of undergraduate students. Data were collected from 197 subjects in K university of G city, using a self-administered questionnaire. Mental health was negatively correlated with the adaptation to university life. A significant influence of gender and mental health on the adjustment to college life was found in this sample. These findings are expected contribute to understanding and improving the adjustment to college life of undergraduate students. Based on these findings, it will be necessary to improve mental health and multidisciplinary interventions will be needed to support the adjustment to college life in undergraduate students. In addition, these findings would contribute to the development of programs for student's adaptation to college life.

A controller Design using Immune Feedback Mechanism (인체 면역 피드백 메카니즘을 활용한 제어기 설계)

  • Park, Jin-Hyun;Kim, Hyun-Duck;Choi, Young-Kiu
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • v.9 no.2
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    • pp.701-704
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    • 2005
  • PID controllers, which have been widely used in industry, have a simple structure and robustness to modeling error. But They are difficult to have uniformly good control performance in system parameters variation or different velocity command. In this paper, we propose a nonlinear adaptive PID controller based on a cell-mediated immune response and a gradient descent learning. This algorithm has a simple structure and robustness to system parameters variation. To verify performances of the proposed nonlinear adaptive PID controller, the speed control of nonlinear DC motor is performed. The simulation results show that the proposed control systems are effective in tracking a command velocity under system parameters variation.

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A Study on the Adaptation of Social Workers Dedicated to Individualized Support Service for Older Adults (노인맞춤돌봄 전담사회복지사의 업무적응에 관한 연구)

  • Ji-Hye Kim;Ji-A Lee;Byung-Woo Lim;So-Ra Kim
    • Journal of Industrial Convergence
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    • v.22 no.8
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    • pp.37-50
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    • 2024
  • The elderly customized care service, which began in 2020, aims to improve professionalism and service quality by introducing dedicated social workers for responsible management of living area performing institutions. Through inductive content analysis, this study attempted to examine the work adaptation process of dedicated social workers who are human resources performing the elderly customized care service system. As a result, 9 upper categories, 25 lower categories, and 56 conceptualizations were derived. This study attempted to provide basic policy data on the adaptation of dedicated social workers by exploring new policies and special work systems from the perspective of practitioners.

Adaptive Video Enhancement Algorithm for Military Surveillance Camera Systems (국방용 감시카메라를 위한 적응적 영상화질 개선 알고리즘)

  • Shin, Seung-Ho;Park, Youn-Sun;Kim, Yong-Sung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39C no.1
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    • pp.28-35
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    • 2014
  • Surveillance cameras in national border and coastline area often occur the video distortion because of rapidly changing weather and light environments. It is positively necessary to enhance the distorted video quality for keeping surveillance. In this paper, we propose an adaptive video enhancement algorithm in the various environment changes. To solve an unstable performance problem of the existing method, the proposed method is based on Retinex algorithm and uses enhanced curves which is adapted in foggy and low-light conditions. In addition, we mixture the weighted HSV color model to keep color constancy and reduce noise to obtain clear images. As a results, the proposed algorithm improves the performance of well-balanced contrast enhancement and effective color restoration without any quality loss compared with the existing algorithm. We expect that this method will be used in surveillance camera systems and offer help of national defence with reliability.

PDSWeb: Performance Evaluation of Distributed Parallel Processing Scheme on the Intranet (PDSWeb: Intranet에서 분산 병렬 처리 스킴의 성능평가)

  • 송은하;정영식
    • Proceedings of the Korea Multimedia Society Conference
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    • 2001.11a
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    • pp.378-383
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    • 2001
  • Intranet 환경에 다수의 유휴 호스트를 이용하여 많은 계산량을 지닌 응용 문제를 분산시켜 병렬 수행함으로써 효율성의 향상이 기대된다. 하지만 유휴 호스트를 이용하는데 있어서 이질성과 가변성 및 자율성으로 인해 요청에 대한 신뢰성을 예측하기가 어렵다. 본 논문에서는 태스크 할당 및 호스트 관리에 있어서 부하 균등을 위한 동적 분산 병렬 스킴인 적응적 태스크 재할당 기법을 제시한다. 또한, 이미지 랜더링 생성과 프랙탈 이미지 처리와 같은 많은 연산량을 지닌 응용 문제를 PDSWeb 시스템에 적용하여 제안 알고리즘의 성능을 분석하고 평가한다.

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An Adaptive Rank-Based Reindexing Scheme for Lossless Indexed Image Compression (인덱스 이미지에서의 무손실 압축을 위한 적응적 순위 기반 재인덱싱 기법)

  • You Kang-Soo;Lee Bong-Ju;Jang Euee S.;Kwak Hoon-Sung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.7C
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    • pp.658-665
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    • 2005
  • Re-assignment scheme of index in index image is called reindexing. It has been well known that index image can be reindexed without losslessness. In this paper, we introduces an adaptive rank based reindexing scheme using co-occurrence frequency between neighboring pixels. Original index image can be converted into rank image by the proposed scheme. Using the proposed scheme, a better compression efficiency can be expected because most of the reindexed values(rank) get distributed with a smaller variance than the original index image. Experinental results show that the proposed scheme achieves a much better compression performance over GIF, arithmetic coding, Zeng's algorithm and RIAC scheme.