• 한국과학교육학회지
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• 제43권4호
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• pp.403-414
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• 2023

본 연구에서는 과학 수업에서의 적응적 실행에 대한 과학교사의 사례와 과학 교과에서의 적응적 실행의 특징에 대한 교사의 사례를 분석하였다. 이를 위하여 전국의 중고등학교 과학교사 128명이 제시한 적응적 실행의 사례 339개와 과학 교과의 특징적인 적응적 실행 사례 199개를 분석하였다. 주요 연구 결과는 다음과 같다. 첫째, 과학 교과의 적응적 실행의 가장 두드러진 특징은 실험과 관련된 적응적 실행이었다. 가장 많은 적응적 사례로 제시한 항목인 '추가적인 자료/활동의 제시'에서 학생들의 이해나 동기유발을 위해 시범실험을 추가하여 제시하는 것이나 두 번째로 많은 사례가 제시된 '실험기구 조작이나 탐구기능 제시'에서도 실험과 관련된 적응적 실행을 제시하였다. 또한 교사들이 응답한 과학 교과의 특징적인 적응적 실행에 대해서도 50%가 넘는 사례가 실험 지도와 관련된 내용이었다. 둘째, 수리력과 문해력 등 학습 상황에서 학생들이 겪는 어려움과 관련된 적응적 실행도 많이 제시되었는데, 과학 학습에서 도구로 사용되는 수학의 기본 능력과 관련된 사례와 한자어로 된 과학 용어의 이해와 관련된 사례가 많이 제시되었다. 셋째, '실험 지도' 이외에 '과학이론과 실세계의 연결', '과학 오개념 지도', '과학적 사고 함양', '융복합적 접근' 등을 위한 적응적 실행이 과학 교과의 특징적인 유형이었다. 넷째, 과학교사들이 제시한 적응적 실행의 사례는 학교급별로 전공별로 차이가 있어 적응적 실행과 관련된 추후 연구에서 학교급이나 전공을 고려할 필요가 있다. 다섯째, 사례수가 적은 적응적 실행 항목들은 대부분 거시적 측면에서 실행되는 적응적 실행으로 이와 연관된 전문성 향상에 관심을 기울일 필요가 있다. 추가적으로 본 연구 결과를 바탕으로 과학교육에 주는 시사점을 논의하였다.

• 한국과학교육학회지
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• 제43권3호
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• pp.295-306
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• 2023

본 연구에서는 과학교사의 적응적 실행에 대한 인식을 중요도와 실행도 측면에서 알아보고자 하였다. 이를 위해 중등 과학교사를 대상으로 적응적 실행 설문지를 개발하여 128명의 설문 응답 결과를 분석하였다. 분석 결과, 첫째, 과학교사들은 적응적 실행의 17개 항목에 대해 모두 중요하다고 응답하였다. 특히 '예시의 추가', '개념의 수준/범위 조절', '학생 참여 격려'에 관한 항목은 중요도와 실행도가 모두 높게 나타났다. 둘째, 적응적 실행 항목에 대한 중요도-실행도 분석 결과, 중요도는 높으나 실행도가 낮아서 집중 개선이 필요한 항목들은 '학생들의 주도적인 학습을 격려'하고 '개인차에 대한 모니터링과 대응'에 대한 것이었다. 이 항목들이 중요도가 높음에도 불구하고 실행도가 낮은 이유에 대해 과학교사들은 시간 부족과 획일적인 교육과정을 지적하였다. 셋째, 적응적 실행 항목에 대한 중요도-실행도 분석에서 과잉 영역인 4영역에 위치한 항목들로는 '속도 조절', '활동 조율', '비유/은유 사용'에 대한 것이었다. 특히 '비유/은유 사용'은 유일하게 중요도보다 실행도가 높게 나온 항목으로 과학교사들이 현재도 충분히 사용하고 있으며 과잉 사용으로 인한 문제점이 발생하지 않는지 재고할 필요가 나타났다. 넷째, 중요도와 실행도의 차이가 나타나는 이유에 대한 응답을 분석한 결과, 교사 요인으로는 교사의 지식이나 능력 부족, 계획대로 실행하는 성향 등이 언급되었으며, 학생 요인으로는 과다한 학생 수, 학생의 수준 차이, 입시 위주 수업을 선호하는 경향 등이 나타났다. 환경 요인으로는 획일적 교육과정과 실험 여건, 평가체제, 외부의 요구 등이 다양하게 언급되었다. 마지막으로 본 연구결과가 과학교육에 주는 시사점을 논의하였다.

• 국제초고층학회논문집
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• 제10권1호
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• pp.45-54
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• 2021

The adaptive reuse of 20th-century high-rise architecture poses important questions about the prevalence of authorized discourses in the heritage conservation field. Based on a two-year teaching experience at Tongji University about the adaptive reuse of the Metropolo Hotel (Palmer and Turner, 1934), an iconic historic high-rise building in the Shanghai Bund area, this paper will show the extent to which disciplinary and urban authorized heritage discourses are present in the development of design and representation strategies in adaptive reuse. Using discourse analysis as a method, this paper will make the argument that disciplinary discourses have a limited effect in the practice of adaptive reuse, which is perceived as a fundamentally creative activity. At the same time, the paper reveals how urban discourses have a much more lasting effect, confirming the intimate links between adaptive reuse and the wider phenomena of beautification and gentrification of high-rise listed areas.

• 가정과삶의질연구
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• 제27권1호
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• pp.165-179
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• 2009

The purpose of this study is to analyze the effectiveness of a host family experience program on the adaptive behavior and self-management skills of children with severe disabilities and to suggest its applicability into clinical practice. The investigators developed a host family experience program and researched the pre-test and post-test designs with nonequivalent groups. The experiment and comparison groups were comprised of 34 children with severe disabilities that lived at S, a care facility for the severely disabled. They were examined for the program's effects on them before and after the application. After analyzing 17 cases for differences in the subjects' quantitative scores, a qualitative analysis was carried out on one representative case. The quantitative analysis results reveal that the experiment group showed a significant increase in their scores of adaptive behavior and self-management skills compared to the comparison group. Positive changes were also observed among the former group in the qualitative analysis. Thus the host family experience program was effective in improving the adaptive behavior and self-management skills of the children with severe disabilities at the facility. These findings indicate that the host family experience program played a positive role in enhancing the adaptive behavior and self-management skills of the children with severe disabilities at the facility and that such host family experience programs should be applied and reinforced in the field of social welfare practice.

• 전기학회논문지
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• 제57권1호
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• pp.102-108
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• 2008

This paper presents robust and adaptive control method for complicated three dimensional crane systems with uncertain effect. We consider an overhead crane system in which a trolly located on its top is moved to x- and y-axis independently. We first approximate the complicated crane model through linearization approach to simply construct a PD control and then design an adaptive control system for compensating modeling error and control deviation which is feasibly occurred due to system perturbation in practice. An adaptive control scheme is analytically derived using Lyapunov stability theory for a given bound of system perturbation. We accomplish numerical simulation for evaluation of the proposed control system and demonstrate its superiority comparing with the traditional control strategy.

• Journal of Electrical Engineering and Technology
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• 제12권1호
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• pp.249-255
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• 2017

Efficient operation of induction motor at light loads has been getting wide attention recently because the operating of induction motor at light loads occupies big portion of its operating regions in many applications such as environment friendly vehicle. As one of approaches to improve efficiency, Adaptive Maximum Torque Per Amp (Adaptive MTPA) control for induction motor drives has been proposed to achieve a desired torque with the minimum possible stator current. However, the Adaptive MTPA control was validated only at heavy load where, in general, control scheme tends to perform better than at light loads since the error in measurement of sensors is lower and signal to noise is better. Thus, although the performance of a control scheme is good at rated operating point, its performance at light load is somewhat in doubt in practice. This has led to considerable interest in efficiency of Adaptive MTPA control at light loads. This work experimentally demonstrates performance of Adaptive MTPA control at light loads regardless of rotor resistance variation, thus showing its good performance over all operating conditions.

• 인터넷정보학회논문지
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• 제24권4호
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• pp.37-45
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• 2023

Adaptive has gained significant attention in Education Technology (EdTech), with personalized learning experiences becoming increasingly important. Next-generation chatbots, including models like ChatGPT, are emerging in the field of education. These advanced tools show great potential for delivering personalized and adaptive learning experiences. This paper reviews previous research on adaptive learning and the role of chatbots in education. Based on this, the paper explores current and future chatbot technologies to propose a framework for using ChatGPT or similar chatbots in adaptive learning. The framework includes personalized design, targeted resources and feedback, multi-turn dialogue models, reinforcement learning, and fine-tuning. The proposed framework also considers learning attributes such as age, gender, cognitive ability, prior knowledge, pacing, level of questions, interaction strategies, and learner control. However, the proposed framework has yet to be evaluated for its usability or effectiveness in practice, and the applicability of the framework may vary depending on the specific field of study. Through proposing this framework, we hope to encourage learners to more actively leverage current technologies, and likewise, inspire educators to integrate these technologies more proactively into their curricula. Future research should evaluate the proposed framework through actual implementation and explore how it can be adapted to different domains of study to provide a more comprehensive understanding of its potential applications in adaptive learning.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제26권3호
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• pp.167-202
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• 2023

A central problem of mathematics teaching worldwide is probably the insufficient adaptive handling of tasks-especially in computational practice phases and modeling tasks. All students in a classroom must often work on the same tasks. In the process, the high-achieving students are often underchallenged, and the low-achieving ones are overchallenged. This publication uses different modeling of the tennis serve as an example to show a possible solution to the problem and develops and discusses one adaptive task each for middle school, high school, and college using three mathematical models of the tennis serve each time. From model to model within the task, the complexity of the modeling increases, the mathematical or physical demands on the students increase, and the new modeling leads to more realistic results. The proposed models offer the possibility to address heterogeneous learning groups by their arrangement in the surface structure of the so-called parallel adaptive task and to stimulate adaptive mathematics teaching on the instructional topic of mathematical modeling. Models A through C are suitable for middle school instruction, models C through E for high school, and models E through G for college. The models are classified in the specific modeling cycle and its extension by a digital tool model, and individual modeling steps are explained. The advantages of the presented models regarding teaching and learning mathematical modeling are elaborated. In addition, we report our first teaching experiences with the developed parallel adaptive tasks.

• 전기학회논문지
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• 제65권8호
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• pp.1400-1406
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• 2016

This paper presents a new adaptive converter control approach for electric motor systems whose voltage source is excited from photovoltaic (PV) power generators. First, an electric model is represented with dynamic states and output velocity of such DC motor systems. We propose a hybrid converter control law in which a state feedback control is applied as an auxiliary control framework. Moreover, control parameter estimation is derived to realize adaptive converter systems for effective control performance against stochastic PV power excitation in practice. We carry out stability analysis for such converter system by using a well-known eigenvalue theory. Lastly, numerical simulation is conducted to test reliability of the proposed converter control approach and prove its superiority in the control point of view.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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• pp.177-182
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• 1989

In this paper a new adaptive control algorithm is derived, with the unknown manipulator and payload parameters being estimated online. In practice, we may simplify the algorithm by not explicity estimating all unknown parameters. Further, the controller must be robust to residual time-varying disturbance, such as striction or torque ripple. Also, the reference model is a simple douple integrator and the acceleration input for robot manipulator consists of a proportion and derivative controller for trajectory tracking purposes. The validity of this control is confirmed in simulation where two-link robot manipulator shows the robust performances in spite of the existing nonlinear interaction and unknown parametrictings