• Structural Engineering and Mechanics
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• 제81권2호
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• pp.195-203
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• 2022

This paper presents the quantification and location damage detection of plane and space truss structures in a two-phase method to reduce the computations efforts significantly. In the first phase, a proposed damage indicator based on the residual force vector concept is used to get the suspected damaged members. In the second phase, using damage quantification as a variable, a teaching-learning based optimization algorithm (TLBO) is used to obtain the damage quantification value of the suspected members obtained in the first phase. TLBO is a relatively modern algorithm that has proved distinguished in solving optimization problems. For more verification of TLBO effeciency, the classical particle swarm optimization (PSO) is used in the second phase to make a comparison between TLBO and PSO algorithms. As it is clear, the first phase reduces the search space in the second phase, leading to considerable reduction in computations efforts. The method is applied on three examples, including plane and space trusses. Results have proved the capability of the proposed method to precisely detect the quantification and location of damage easily with low computational efforts, and the efficiency of TLBO in comparison to the classical PSO.

• Smart Structures and Systems
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• 제32권1호
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• pp.37-47
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• 2023

Indirect determination of pan evaporation (PE) has been highly regarded, due to the advantages of intelligent models employed for this objective. This work pursues improving the reliability of a popular intelligent model, namely multi-layer perceptron (MLP) through surmounting its computational knots. Available climatic data of Fresno weather station (California, USA) is used for this study. In the first step, testing several most common trainers of the MLP revealed the superiority of the Levenberg-Marquardt (LM) algorithm. It, therefore, is considered as the classical training approach. Next, the optimum configurations of two metaheuristic algorithms, namely cuttlefish optimization algorithm (CFOA) and teaching-learning-based optimization (TLBO) are incorporated to optimally train the MLP. In these two models, the LM is replaced with metaheuristic strategies. Overall, the results demonstrated the high competency of the MLP (correlations above 0.997) in the presence of all three strategies. It was also observed that the TLBO enhances the learning and prediction accuracy of the classical MLP (by nearly 7.7% and 9.2%, respectively), while the CFOA performed weaker than LM. Moreover, a comparison between the efficiency of the used metaheuristic optimizers showed that the TLBO is a more time-effective technique for predicting the PE. Hence, it can serve as a promising approach for indirect PE analysis.

• 영어영문학
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• 제55권5호
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• pp.821-841
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• 2009

This paper explores the ways to reshape humanistic values of the curriculum of the English department of Korean universities. The English curricula are usually composed of three fields of literary studies, general education, and English proficiency, whose conventional humanistic values have been currently dwindling. As for literary studies, teaching literature still hovers over the canonical works of past decades, not allowing students to access the canon with their own ideas and ending up with authoritative monologues. The general education field leans toward edited texts rather than authentic ones, which ignores a genuine path of communication between the author and its readers. Subjects for English proficiency such as "TOEIC" tend to be taught online with no teacher's presence for the nominal purpose of optimizing economic efficiency in teaching. All these testify to the attenuation of humanistic values in the curriculum, which motivates us to suggest some ways to reshape the values. Authoritative monologue in teaching literature can be shifted to the open-ended conversation by using role-play methods as well as accepting extra-canonical works into the curriculum. Authentic texts for general education prove to be preferred by students with the successful result of our experiment. Lastly, it is teacher's presence in the class that helps get higher achievement of "TOEIC" than some online classes. As suggested above, open-ended conversation, wider communication between author and readers, and human presence of the class will help reshape humanistic values in the English curriculum.

• 컴퓨터교육학회논문지
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• 제14권5호
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• pp.1-8
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• 2011

본 연구에서는 전문계 고등학교 학생들의 알고리즘 시간효율성에 관한 개념 이해 수준을 확인하고 빈번하게 발생하는 오개념 유형들을 확인하고자 하였다. 선행연구에서 확인된 세 가지 유형의 오개념들을 토대로 9개의 오개념 측정 문항을 개발하였으며, 프로그래밍 관련 과목을 이수한 51명의 전문계 고등학교 학생들을 대상으로 조사를 실시하였다. 연구결과, 알고리즘 시간효율성에 관한 개념 이해도는 매우 낮은 수준으로 나타났으며, 견고하고 반복적으로 발생되는 여러 유형의 오개념들을 확인하였다. 마지막으로, 확인된 오개념들을 과학적 개념으로 변화시키기 위한 교육적 전략인 시뮬레이션 및 알고리즘 효율성 평가 틀의 활용 방안과 함께 교육과정 개선의 필요성을 제안하였다.

• 한국가정과교육학회지
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• 제4권1호
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• pp.87-95
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• 1992

The purpose of this study is to suggest how we can get over the difficulties of practical drill under experimentation concerning the units of making clothes in the curriculum of home economics. The import of this study was based on the results of the preceding studies the field of the making Korean clothes, from the standpoint of the teaching tools and teaching materials by the use of VTR, is one of the most insufficient. On the one hand, the teaching procedure here a VTR, running 34 minutes or so, was made up with the process of making Korean men’s slacks, and was led by the researcher’s own. The contents of the lesson are as follows： the shape of Korean clothes, the name of each part, the process of drawing, cutting and sewing, and the items of evaluation and arrangement. On the other hand, the two comparative groups were made to compare one with the other： One group was taught by help of VTR media, and the other by the model performance and explanation of the instructor’s own. All of the statistical data were analyzed in terms of SPSS/PC, and t-verification was made, to make difference between the two, after standard deviation was calculated according to the classified domains. The consequences of the test research are shown as below： 1. The difference of understanding was obviously made in considering that the group made a better score than the comparative one in understanding to process of making Korean clothes. 2. The difference of skill was highly made in considering that the group made a better score than the comparative one in the practical drill of making Korean clothes. 3. The difference of interests was evidentally made in considering that the group made a better score than the comparative one in the stage of making Koran clothes. Such means that the motivation and attitude of the learners was made stimulate by the Audio-Visual material than by the traditional cramming method. 4. The difference of frequency was fairly made in considering that the experimeatal group made a better score than the comparative one in the frequency of individual teaching. 5. The difference of the efficiency of time-consumption was clearly made in considering that the experimental group made a better score than the comparative one. As the results of the research above, the medium of VTR proved to more effective to the achievement of schoolwork and the strategies of teaching. Therefore, more use of VTR media will help the instructors with the difficulties of practical drill in the whole process of making Korean clothes； Widely use of VTR media in teaching will be surely more fruitfull to the unit of making Korean clothes than teaching by explanation.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제33권3호
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• pp.207-229
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• 2019

제 4차 산업혁명 시대를 맞이하여 수학과 교수 학습에 ICT기술을 접목한 수업의 시도가 다양하게 이루어지고 있으며, 거꾸로 수업과 증강현실을 활용한 수업의 필요성과 효율성이 주목받고 있다. 이는 교육현장에서 거꾸로 수업과 증강현실을 활용한 수업 콘텐츠와 그 활용방안에 대한 수요의 증가로 이어지고 있다. 따라서 실제로 현장에 적용할 수 있는 수업 콘텐츠의 개발과 수업 방안에 대한 연구의 필요성이 커지고 있다. 이와 같은 관점에서 본 연구에서는 교수 학습 유형을 분류하고, 구성주의 수학 교육 원리와 증강현실 기반 모바일 앱을 활용한 거꾸로 교실 수업 방안과 교수 학습 유형별 수학 교수 학습 콘텐츠를 개발하고 교수 학습 현장에 적용할 수 있는 방안 및 수업지도안을 제시한다.

• 한국수학교육학회지시리즈A:수학교육
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• 제41권2호
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• pp.139-155
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• 2002

In this paper we represented the results of surveying on the present condition of mathematics education and the contents of the mathematics text books that are usually taught in Art High Schools interest in mathematics subjects and to achieve the higher level of mathematical abilities. We would like to raise their interest in mathematics and to improve the efficiency of teaching level on the basis of the 7th Mathematics Curriculum Revision. Some suggestions are of offered by considering the level of their mathematical abilities in Art High Schools and the present contents of the mathematical subjects from following views ⑴ the aspect of studying method ⑵ the aspect of revising contents of mathematics textbooks for them ⑶ the aspect of educational policies for Art High Schools

• 한국실내디자인학회논문집
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• 제15권5호
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• pp.175-182
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• 2006

School's preservation of health aims at the promotion of efficiency for school education as it promotes students and all teaching staffs' health. In this study, 26 elementary schools in seoul were selected and analyzed, in order to make a basic plan of efficient public health room where students and all teaching staffs can be actively treated their physical and mental problems. The basic direction of school health was referred to promote school's preservation of health. A public health room should have each necessary field to do their own parts. Besides, its space plan has to be designed in detail so that the room can be convenient and comfortable. Unlike until now, we need to change our mind into planing a public health room apart from a school plan.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제37권
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• pp.43.1-43.5
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• 2015

Image-guided surgery potentially enhances intraoperative safety and outcomes in a variety of craniomaxillofacial procedures. We explore the efficiency of one intraoperative navigation system in a single complex craniofacial case, review the initial and recurring costs, and estimate the added cost (e.g., additional setup time, registration). We discuss the potential challenges and benefits of utilizing image-guided surgery in our specific case and its benefits in terms of educational and teaching purposes and compare this with traditional osteotomies that rely on a surgeon's thorough understanding of anatomy coupled with tactile feedback to blindly guide the osteotome during surgery. A 13-year-old presented with untreated syndromic multi-suture synostosis, brachycephaly, severe exorbitism, and midface hypoplasia. For now, initial costs are high, recurring costs are relatively low, and there are perceived benefits of imaged-guided surgery as an excellent teaching tool for visualizing difficult and often unseen anatomy through computerized software and multi-planar real-time images.

• 디지털융복합연구
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• 제7권3호
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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.