• Journal of Industrial Convergence
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• v.18 no.3
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• pp.83-89
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• 2020

This paper describes the effects of Novel Engineering(NE) on improvement of creative problem-solving abilities. We performed two classes for control and experience group. They are all 5th grade students. Core concept of the NE lesson is ecosystem and interaction with 8 hours long. We designed a lesson able to integrate subjects like Korean, Science and Practical Arts. Then we performed pre-and-post t-test on creative problem-solving ability. The experimental results showed that NE lesson has a high effects on 4 sub-elements like self conviction and independence, diffusion thinking, critical thinking and motivational component. The research showed that NE class is a good teaching-learning method to cultivate various competencies for our children. NE is a convergence learning model integrating various problem-solving paradigms ever researched. Thus we expect that NE is a foundation for convergence curriculum model to lead our children to their future and get settled to all schools.

• Journal of the Korean Institute of Landscape Architecture
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• v.34 no.4 s.117
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• pp.69-83
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• 2006

Nature rehabilitation has become a major theme in river management in South Korea. An analysis and evaluation of the landscape is a crucial step to select the suitable tracts for developing or conserving land use in the process of landscape planning. The purpose of this paper is to establish a hierarchical procedure for the setting of the landscape units on the various scales at which field biologists performed their observations and to select the preserves through by a suitability model for synthesizing the ecological empirical, and biophysical data. An evaluation process needs to be performed according to the landscape scales: site, local, and regional scales, at which the environmental data were collected, analyzed, and synthesized. Introducing of three level scales was crucially necessary for evaluating the various multi level ecological data for zoning of preserves in river corridors. The evaluation level at different scales are hierarchically established into three phases. The first evaluation phase can be performed by the long length units defined by the ranges of stream widths at regional scale. Secondly, each of these long units can be divided into two or more segments according to its landscape homogeneity at local level. Finally the segments at the last phase can be designated according to the location of the reservoir weirs and bridges at site level. The conceptual model components are adopted for collecting, evaluating, and interpreting the biological and abiotic data at site level. Three preserves are selected, having high potentials for being intensely managed as the Ecological Education Areas in the river. Despite a lot of assumption the results are expected to facilitate discussion and decision making about which frameworks of evaluation are desirable and adaptable for integrating the ecological data into the rehabilitation design process in South Korea.

• Communications of Mathematical Education
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• v.25 no.2
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• pp.473-495
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• 2011

Across the secondary school, students deal with the algebraic conditions like as identity, inverse, commutative law, associative law and distributive law. The algebraic structures, group, ring and field, are determined by these algebraic conditions. But the conditioning of these algebraic structures are not mentioned at all, as well as the meaning of the algebraic structures. Thus, students is likely to be considered the algebraic conditions as productions from the number sets. In this study, we systematize didactically the meanings of algebraic conditions and algebraic structures, considering connections between the number systems and the solutions of the equation. Didactically systematizing is to construct the model for student's natural mental activity, that is, to construct the stream of experience through which students are considered mathematical concepts as productions from necessities and high probability. For this purpose, we develop the program for the gifted, which its objective is to teach the meanings of the number system and to grasp the algebraic structure conceptually that is guaranteed to solve equations. And we verify the effectiveness of this developed program using didactical experiment. Moreover, the program can be used in ordinary students by replacement the term 'algebraic structure' with the term such as identity, inverse, commutative law, associative law and distributive law, to teach their meaning.

• Journal of Elementary Mathematics Education in Korea
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• v.14 no.2
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• pp.287-314
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• 2010

The algorithm is a chain of mechanical procedures, capable of solving a problem. In modern mathematics educations, the teaching algorithm is performing an important role, even though contracted than in the past. The conspicuous characteristic of current elementary mathematics textbook's manner of manipulating multiplication algorithm is exceeding converge to 'standard algorithm.' But there are many algorithm other than standard algorithm in calculating multiplication, and this diversity is important with respect to didactical dimension. In this thesis, we have reconstructed the experimental learning and teaching plan of multiplication algorithm unit by making the best use of diversity of multiplication algorithm. It's core contents are as follows. Firstly, It handled various modified algorithms in addition to standard algorithm. Secondly, It did not order children to use standard algorithm exclusively, but encouraged children to select algorithm according to his interest. As stated above, we have performed teaching experiment which is ruled by new lesson design and analysed the effects of teaching experiment. Through this study, we obtained the following results and suggestions. Firstly, the experimental learning and teaching plan was effective on understanding of the place-value principle and the distributive law. The experimental group which was learned through various modified algorithm in addition to standard algorithm displayed higher degree of understanding than the control group. Secondly, as for computational ability, the experimental group did not show better achievement than the control group. It's cause is, in my guess, that we taught the children the various modified algorithm and allowed the children to select a algorithm by preference. The experimental group was more interested in diversity of algorithm and it's application itself than correct computation. Thirdly, the lattice method was not adopted in the majority of present mathematics school textbooks, but ranked high in the children's preference. I suggest that the mathematics school textbooks which will be developed henceforth should accept the lattice method.

• Journal of The Korean Association For Science Education
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• v.30 no.8
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• pp.971-987
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• 2010

The purpose of this study is to investigate the formation and development of science teachers' practical knowledge by life history. In the sociocultural perspective, a science teacher is a producer and consumer of knowledge. There were two secondary science teachers who participated in this study. Each of them had three to six years experience in teaching. They were familiar with the researchers because they had been to the same university or were colleagues with them in graduate school for several years. The two science teachers had formed their practical knowledge for their professional development based on their biographical backgrounds. Model of Life history and structure of personal practical knowledge were used as analytical tools. As a result, the science teachers' practical knowledge has shown a significant difference in the main concern and weight according to their life contexts. The science teachers' formation of their practical knowledge played a role as an important motive to improve their professionalism based on the teacher's life path. In addition to that, the science teachers' practical knowledge showed a tendency to be solidified with continuous reflection.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.536-545
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• 2016

Most universities have been concerned about Liberal Education; whether is it on universal truth, or on training job-specialists? In consequence, the curricula have been reformed and promoted diversely. In this aspect, has been developed as convergence education. I selected two easy and short texts and tried to make the students practice and memorize the dialogues as many as possible. At the end of the class, the students presented given assignments, with theatrical performance. This study carried out the research of students' presentation and theatrical performances on the basis of group study, together with a survey of the results of questionnaires and lecture evaluation. Therefore it was a exploratory study to check out significance of variables through the correlation analysis. The students' questionnaires showed the improvement of their English ability, together with their knowledge about literature and drama, cultivating humanities through the theatrical performance. It may be said that has achieved multi-functional effects of English class converged literature, theatre and humanities even for one semester.

• Journal of KIISE
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• v.42 no.12
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• pp.1522-1534
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• 2015

This work presents a new method that can predict, without the use of training data, whether an input essay is written on a given topic. ConceptNet is a common-sense knowledge base that is generated automatically from sentences that are extracted from a variety of document types. An essay prompt is the topic that an essay should be written about. The method that is proposed in this paper uses ConceptNet and an essay prompt to decide whether or not an input essay is off-topic. We introduce a way to find the shortest path between two nodes on ConceptNet, as well as a way to calculate the semantic similarity between two nodes. Not only an essay prompt but also a student's essay can be represented by concept nodes in ConceptNet. The semantic similarity between the concepts that represent an essay prompt and the other concepts that represent a student's essay can be used for a calculation to rank "on-topicness" ; if a low ranking is derived, an essay is regarded as off-topic. We used eight different essay prompts and a student-essay collection for the performance evaluation, whereby our proposed method shows a performance that is better than those of the previous studies. As ConceptNet enables the conduction of a simple text inference, our new method looks very promising with respect to the design of an essay prompt for which a simple inference is required.

• Phonetics and Speech Sciences
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• v.12 no.2
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• pp.39-49
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• 2020

The prosody of children with autism spectrum disorders (ASD) has several abnormal features, including monotonous speech. The purpose of this study was to compare acoustic features between an ASD group and a typically developing (TD) group and within the ASD group. The study also examined audience perceptions of the lengthening effect of increasing the number of syllables. 50 participants were divided into two groups (20 with ASD and 30 TD), and they were asked to imitate a total of 28 sentences. In the auditory-perceptual evaluation, seven participants chose sentence types in 115 sentences. Pitch, intensity, speech rate, and pitch slope were used to analyze the significant differences. In conclusion, the ASD group showed higher pitch and intensity and a lower overall speaking rate than the TD group. Moreover, there were significant differences in s2 slope of interrogative sentences. Finally, based on the auditory-perceptual evaluation, only 4.3% of interrogative sentences produced by participants with ASD were perceived as declarative sentences. The cause of this abnormal prosody has not been clearly identified; however, pragmatic ability and other characteristics of autism are related to ASD prosody. This study identified prosodic ASD patterns and suggested the need to develop treatments to improve prosody.

• Journal of the HCI Society of Korea
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• v.10 no.2
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• pp.21-26
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• 2015

NUI (Natural User Interface) system interprets the user's natural movement or the signals from human body to the machine. sEMG (surface electromyogram) can be observed when there is any effort in muscle even without actual movement, which is impossible with camera and accelerometer based NUI system. In sEMG based movement recognition system, the minimal number of electrodes is preferred to minimize the inconvenience. We analyzed the decrease in recognition accuracy as decreasing the number of electrodes. For the four kinds of movement intention without movement, extension (up), flexion (down), abduction (right), and adduction (left), the multilayer perceptron classifier was used with the features of RMS (Root Mean Square) from sEMG. The classification accuracy was 91.9% in four channels, 87.0% in three channels, and 78.9% in two channels. To increase the accuracy in two channels of sEMG, RMSs from previous time epoch (50-200 ms) were used in addition. With the RMSs from 150 ms, the accuracy was increased from 78.9% to 83.6%. The decrease in accuracy with minimal number of electrodes could be compensated partly by utilizing more features in previous RMSs.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.27-27
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• 2019

본 연구는 2019년 물관리기본법 시행과 함께 추진하는 유역물관리체제 수립과 운영에 대해 분석하고자 한다. 유역물관리는 기존의 행정체계 중심으로 추진된 물관리에서 드러난 비효율성을 극복하고 물순환에 기초하여 더욱 효율적이고 자연 친화적으로 운영하고자 하는 통합물관리의 기초이다. 유역물관리제도를 적절하게 수립하고 운영하기 위해서는 한국보다 앞서 유역물관리제도를 채택하고 운영해온 경험을 면밀하게 검토하고 장단점을 학습하여 한국 현실에 맞게 응용하는 지혜가 필요하다. 따라서 본 연구는 유역물관리제도를 성공적으로 수립하고 운영해 온 영국(잉글랜드 및 웨일스)과 프랑스 사례를 검토하여 시사점을 도출하고자 한다. 영국(잉글랜드 및 웨일스)은 1973년 유역관리청을 10개 대유역에 설치하여 유역물관리체제를 수립하고 운영하였지만 1970년대 및 1980년대 경제난을 겪으면서 관련 투자가 줄어들고 하천의 수질 악화가 지속하였으며 유역관리청과 지방정부와의 긴밀한 협조 부재로 관리의 어려움이 증가하였다. 결국, 1989년 10개의 유역관리청을 상하수도 서비스회사로 전환하고 물서비스감시청, 음용수감시국, 환경청 등의 규제기관을 수립하여 규제와 서비스를 분리한 독특한 유역물관리체제를 수립하였다. 영국의 유역물관리체제는 2000년 유럽연합물관리지침의 도입으로 10개 유역을 11개의 유역으로 재편하고 국가소통위원회, 유역소통위원회 14개, 유역파트너쉽 100개 등의 기구를 설치하여 유역거버넌스를 강화하였다. 프랑스는 1964년 새로운 물법 도입을 통해 전국을 6개 대유역으로 나누고 각 유역에 유역관리청과 유역위원회를 설치하여 본격적인 유역물관리제도를 수립하였다. 초기에는 유역관리 조직과 지방정부 간의 알력이 상당하여 수도요금에 자동부과되는 약 19%에 달하는 물세에 대한 거부감이 상당하였다. 그런데 이러한 물세가 유역관리청의 관리로 물관리 사업을 위한 펀드로 조성되고 물관리 사업 시행 시 대규모 자금을 조달할 수 있다는 실효성이 입증되면서 점차 유역관리제도가 정착할 수 있게 되었다. 프랑스는 2000년 유럽연합물관리지침의 도입으로 기존의 6개 대유역으로 관리하던 것을 13개 유역으로 재편성하였고 유역감독관 제도를 신설하여 중앙의 감독을 강화하였으며 유역관리청과 유역위원회는 더욱 강화된 거버넌스를 기반으로 효율적인 물관리를 시행하고 있다. 영국과 프랑스 사례는 한국의 유역물관리제도 수립과 운영을 위해 다음과 같은 시사점을 준다. 첫째, 2019년 시행을 앞둔 유역물관리위원회의 구성, 운영 및 역할 등에 대해서는 큰 범위에서 합의를 이뤄야 하겠지만 안정적인 운영과 사업 시행을 위해서는 긴 시간이 필요하다는 점이다. 따라서 인내심과 여유를 갖고 임하되 필요한 원칙은 면밀한 검토와 합의를 통해 세워야 할 것이다. 둘째, 거버넌스의 중요성이다. 영국 사례와 같이 이해당사자 간의 대화와 타협은 중앙정부가 주도하는 것이 아닌 유역, 지방, 도시 등에서의 이해당사자들이 함께 이룩해야 한다. 셋째, 유역관리조직을 위한 건전한 재정확보이다. 프랑스의 예와 같이 유역물관리 조직의 독립성은 재정적 독립이 근본이 되어야 하고 이것은 독립재정을 확보하여 중앙 혹은 기타 유역/지방 조직의 간섭을 피해야 한다.