• School Mathematics
• /
• v.19 no.1
• /
• pp.77-93
• /
• 2017

The purpose of this study is to investigate the characteristics of problem making of 19 mathematically gifted students in junior high school. In this study, we examined the expansion and sophistication of the problems made by gifted students, focusing on the analysis framework proposed in the previous research. Next, the problem making by gifted students were categorized into 'horizontal problem making' and 'vertical problem making.' As a result of this study, it was found that problem making by gifted students was not enough in terms of extension and sophistication. In addition, gifted students made problems in the direction of decreasing complexity than original problems when creating new problems, and considered the conditions presented in the original text separately but not comprehensively.

• Journal of the Korean Society for information Management
• /
• v.18 no.3
• /
• pp.115-138
• /
• 2001

The purpose of this study is to provide general principles to be used in designing university websites from the perspective of information architecture. Quantitative and qualitative evaluation criteria of web sites were developed based on information architecture principles. The students taking IA class were directly involved in constructing the evaluation criteria and they can be classified into four categories: 1) information organization; 2) navigation system; 3) labeling system; and searching system. These criteria were employed in evaluating twenty randomly selected university websites in Korea. General principles to be used in designing university websites were developed based on the findings of the study. They are composed of four major components in designing: 1) systematic information organization; 2) flexible navigation system; 3) consistent labeling system; and 4) efficient searching system.

• Journal of Korea Game Society
• /
• v.18 no.1
• /
• pp.7-18
• /
• 2018

As coding education is ubiquitous in elementary or higher school curriculum, puzzle-based coding platforms such as Scratch or Entry have been popularly deployed and employed by many Korean coding educational institutions. In this article, we propose a quantitative students' coding assessment methodology and discuss several issues of the method. Besides, we show its usefulness through case studies shown in our proprietary coding platform called "CodingPuzzle" system. Additionally, we describe detailed design and implementation issues of our coding assessment system that has already been ported to the CodingPuzzle system and is currently under operation.

• Journal of The Korean Association For Science Education
• /
• v.4 no.2
• /
• pp.74-81
• /
• 1984

중등 과학교사 양상에 있어서 기초 교양 과목과 교육 일반론 및 과학 과목은 중요한 부분이지만 가장 핵심적이고 특유해야할 과목은 과학교육 관계 과목이다. 많은 경우 $2{\sim}3$학점의 한 과목을 필수로 제시되는 "물리교육", "화학교재", "생물교수법" 등의 분야별 과목이 안이하고 무의미하게 제시되는 것이 아닌가 하는 직관적 판단으로부터 우선 한국의 실태를 조사하고 장기적이고 포괄적인 연구 개발의 기본적 모형을 구안하려는 것이 본 연구의 목적이다. 연구의 한 단계로 전국 사범대학 과학교육 관계과나 전공을 대상으로 설문지 방법과 면담을 통해 학사 학위 및 중등 과학교사 자격을 위한 취소 이수학점 그리고 일반 및 과학 교육 관계 과목에 대해 조사하였다. 특별히 과학교육관계 과목에 대해서는 상세하게 필수 및 선택 과목 수와 학점, 대상 학생과 교수, 과목의 목표, 내용, 교육 자료와 평가 방법 등을 조사 분석하였다. 또한 설문의 두 번째 범주인 과학교육 과목 담당 교수의 중등 과학 교사 양성 교육과정에 대한 일반적인 의견과 과학 교육 과목에 대한 구체적 의견을 종합 분석하였다. 이러한 실태 조사와 의견 분석을 바탕으로 과학 교육 과목의 총 이수 학점에 대한 비율, 과목수와 명칭 그리고 교육 내용의 기본적 사항을 제시함으로써 자료개발과 실제 지도를 위한 모형적 연구를 수행하였다.

• Journal of Korean Home Economics Education Association
• /
• v.17 no.2
• /
• pp.171-182
• /
• 2005

The purpose of this study is to develop the Checklist for Observing and Analytical Framwork that assesses a series of activities related to the classroom teaching which is the core of teachers' professionalism. In clarifying the objectives of observing the classroom activities, it would be effective to understand the overall outline of the home economics instructions as well as to define the elements of the classroom work ; hence, the classroom work has been modularized in several stages, namely, planning/organization, execution, and evaluation. The stages are divided into nine elements of the classroom work in general : (1) Presenting the study objective, (2) Structuring classroom activities, (3) Teaching the content, (4) Question-and-answers (5) Feedback the to the students' responses, (6) Offering learning opportunities, (7) Stimulating the students' interest, (8) Evaluation, (9) Applying the result of the evaluation.

• Journal of Korean Society of Forest Science
• /
• v.112 no.3
• /
• pp.267-279
• /
• 2023

This research assessed the feasibility of using high-resolution aerial images and deep learning algorithms for estimating the land-use and land-cover areas at the Approach 3 level, as outlined by the Intergovernmental Panel on Climate Change. The results from different sampling densities of high-resolution (51 cm) aerial images were compared with the land-cover map, provided by the Ministry of Environment, and analyzed to estimate the accuracy of the land-use and land-cover areas. Transfer learning was applied to the VGG16 architecture for the deep learning model, and sampling densities of 4 × 4 km, 2 × 4 km, 2 × 2 km, 1 × 2 km, 1 × 1 km, 500 × 500 m, and 250 × 250 m were used for estimating and evaluating the areas. The overall accuracy and kappa coefficient of the deep learning model were 91.1% and 88.8%, respectively. The F-scores, except for the pasture category, were >90% for all categories, indicating superior accuracy of the model. Chi-square tests of the sampling densities showed no significant difference in the area ratios of the land-cover map provided by the Ministry of Environment among all sampling densities except for 4 × 4 km at a significance level of p = 0.1. As the sampling density increased, the standard error and relative efficiency decreased. The relative standard error decreased to ≤15% for all land-cover categories at 1 × 1 km sampling density. These results indicated that a sampling density more detailed than 1 x 1 km is appropriate for estimating land-cover area at the local level.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.37 no.4
• /
• pp.705-716
• /
• 2017

As many environmental pollution problems have arisen, various studies related to the environmental evaluation have been carried out in the construction industry. However, there is no methodology for estimating the environmental load quickly for design alternatives of civil facilities in the design phase. This study aim to establish criteria of works information and designed parts which can efficiently estimate environmental loads of PSC beam bridge based on standard quantity at the early design phase. For this purpose, a detailed environmental loads database was constructed by performing Life Cycle Assessment (LCA) based on detailed design data of 25 bridges. In addition, major work with high impact on environmental load were selected, and the analysis of characteristics of environmental load according to the required materials and 8 impact categories were conducted. As a result, the superstructure accounted for 42.91%. In the superstructure, remicon of the material base and PSC beam work occupied 53.13% and 31.25%. In the substructure, remicon, rebar, and cement, which are material base, accounted for more than 93%. It is expected that this major work and material information for each part of bridge can be utilized in the construction of the model, which can estimate the approximate environmental load, reflecting the characteristics of the structure in the design phase.

• Journal of Intelligence and Information Systems
• /
• v.9 no.1
• /
• pp.211-225
• /
• 2003

This paper aims at the design of collaborative architecture for business to business (B2B) applications based on Web service protocol. As different business processes should be interfaced in the B2B environment collaboration is important fur the success of B2B implementation. For the development tools, XML, Web services and ASP.NET were adopted Web services are emerging to provide a systematic and extensible framework for application-to-application interaction. The Web services framework is divided into three areas; communication protocols, service descriptions and Web discovery. Web services such as SOAP, WSDL and UDDI correspond to the three areas respectively. ASP.NET is utilized which corresponds to the component and service set located in the top layer of .NET. For the service of product category and product details, Web service architecture was implemented based upon the SQL server database.

• 한국노년학
• /
• v.38 no.3
• /
• pp.453-466
• /
• 2018

The purpose of this study is to explore the enlightenment of the Korean long-term care insurance policy on Qingdao's long-term care insurance policy through policy comparison. China and Korea are very similar in terms of cultural background, living habits, and population structure. Therefore, the successful experience of Korean long-term care insurance has great implications for Qingdao even China to build a long-term care insurance system. Through the literature review, this article compares the long-term care insurance policy implemented by Qingdao City and Korea in Gilbert & Terrell's social welfare policy analysis framework. With the comparison this article discusses about the existing problems of the current pilot policy system in Qingdao, such as lack of legislation support and financial independence, assessment standards are not detailed, and human resources are insufficient. The author raises five suggestions to improve Qingdao's long-term care policy as the conclusion of this paper: legislation support, detailed assessment standard, expand categories of benefits, enrich delivery network, optimize financing sources.

• Journal of Korean Society of Steel Construction
• /
• v.16 no.6 s.73
• /
• pp.725-736
• /
• 2004

A new type of girder, called steel-confined prestressed concrete girder (SCP girder), has been developed, which maximizes the structural advantages of concrete, steel, and PS tendon, and improves on the shortcomings of steel plate girder, PSC I-girder, and preflex girder bridge for use in the construction of middle- or long-span bridges. To verify the propriety of design, structural safety, and applicability of this girder, a static load test was carried out (Kim et al.., 2002). Since the main damage typically sustained by steel bridges results from the fatigue caused by the repetition of traffic loads, fatigue safety must therefore be guaranteed in applying the SCP girder in the construction of real bridges. In this study, a fatigue test was carried out to investigate fatigue behavior and provide basic data for fatigue design. Based on the fatigue test, the fatigue safety of the girder was estimated. For the fatigue test, 10-m specimens were designed for a standard-design truckload (DB-24). A static load test was also performed before the fatigue test to analyze the structural behavior of the specimens. After the fatigue test, outer steel plates were removed to observe the condition of the concrete in the girder.