• 한국정밀공학회지
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• 제15권2호
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• pp.124-133
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• 1998

This paper describes a research work of developing a computer-aided design of blanking and piercing for irregular-shaped sheet metal products. An approach to the development of compact and practical CAB system is based on the knowledge-based rules. Knowledge for the CAD system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. The system has been written in AutoLISP on the AutoCAD with a personal computer. Based on knowledge-based rules, the system, STRT-DES, is designed by considering several factors, such as complexities of blank geometry and punch profile, availability of press equipment and standard parts, utilization ratio which minimizes the scrap in a single or a pairwise operation, bridge width, grain orientation and design requirements which maximize the strength of the part when subsequent bending is involved. This system checks a forming feasibility with both internal and external features, a dimension of blanked hole, and a corner and a fillet radius for irregualrly shaped sheet metal products. Therefore this system can carry out a die design for each process which is obtained from results of an automated blank layout drawing with a best utilization ratio for irregular shape of product that was successful in production feasibility check module and those of an automated strip layout drawing and generate part drawings and the assembly drawing of die set in graphic forms.

• 한국환경교육학회지:환경교육
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• 제22권2호
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• pp.92-106
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• 2009

We assumed that natural history museums have rooms for functioning as institutions for the environmental education, especially in aspects of multi-disciplinary, informal education. So we set goals of this research as finding 1) how much environmental education contents are reflected in exhibits of natural history museums, and 2) what those characteristics in aspects of dimension, range, and topic are. First, we developed a framework for analyzing of environmental education contents. Second, we applied the framework to seven major natural history museums. As the result, environmental education contents are reflected by 69.1% totally. Especially, the 'knowledge' dimension covered mostly, and among them the range of 'elements of Ecosystem' occupied more than other ranges. With inferring our results, we suggested that characteristics of natural history museums in environmental education are followed; spatial-temporal expansion of bio-diversity concept, visualizing impacts of human activity against nature.

• 한국측량학회지
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• 제18권2호
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• pp.191-198
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• 2000

수치사진 측량은 신속한 정보 획득과 갱신을 통하여 지리정보체계의 데이터 베이스 구축에 중요한 역할을 하고 있다. 이러한 수치사진측량의 기본적인 처리과정 중의 하나는 영상정합이다. 그러나 어떠한 영상정합 알고리즘도 인간의 판단과 지적 능력에 의해서 수행되는 것만큼 만족스러운 결과를 산출하지는 못하고 있다. 따라서 본 논문에서는 대상지역이 완만한 경우 정합점이라고 판단되는 점과 그 이웃 점들간에 전체적인 유사성을 관측하여 불량 정합점들을 제거하는 방법(정합 강도의 측정)을 제안하였고, 또한 최종적으로 얻어지는 정합점들의 3차원 좌표를 광속 조정법을 통하여 구하였다 실험결과 제안방법은 불량정합점들을 효과적으로 제거하였고, 계산된 3차원 지상좌표도 허용 오차 범위 이내로 들어왔다.

• Journal of Information Science Theory and Practice
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• 제7권4호
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• pp.6-19
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• 2019

The purpose of this article is to problematize the existence of a possible Ibero-American informational thinking. It was initially observed that a relative absence of Ibero-America in the international presentations and mappings of information science exists. Below, the reality of the 22 countries that compose Ibero-America is discussed, a region that can be understood from a sociocultural and geopolitical perspective. Then, a mapping of the information science research in these countries is made. The main research topics found are: epistemological studies, relationships with library science, information literacy, representation and organization, bibliometric studies, information management, user studies, technological dimensions, and relationships with archival science and museum studies. Finally, a general epistemological configuration of information science is presented at a global level, highlighting the great trends of study of information that marked the decades of the 1960s and 1970s (physical model), 1980s and 1990s (cognitive model), and the 21st century (sociocultural model), and which manifested themselves in the different subareas that make up the field. The most recent research in information science, in addition to addressing information transfer (physical dimension) and its relationship with data and knowledge (cognitive dimension), has also incorporated aspects related to the social effects of information, its role in the constitution of identities and culture, and the importance of its material conformations. Such expansion reflects attempts to address the complexity of informational phenomena. Therefore, it is concluded that it is important to place the specific contributions of Ibero-America in this context.

• 한국지역지리학회지
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• 제11권4호
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• pp.463-475
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• 2005

본 연구에서는 영남지역의 산업구조 현황을 살펴보고 특화산업을 분석하여, 지역산업정책에의 시사점을 도출하였다. 분석결과에서 보듯이, 영남지역 내에서도 시도별로 정태 동태적 관점, 정태적 관점, 동태적 관점에서 선정된 특화산업의 특성이 차별적으로 나타났으며, 이러한 특화산업의 성격에 따른 지역적 특성을 3가지 유형으로 분류할 수 있었다. 또한 이러한 유형별로 특화산업 육성 전략의 효과가 차별적으로 나타날 수 있음을 살펴보았다. 이러한 분석결과를 토대로, 다음과 같은 정책적 시사점을 도출할 수 있다. 첫째, 특화산업의 육성과 관련하여 지역별로 특화산업의 특성에 따라 유형별로 차별적인 특화산업 육성 전략을 구사해야 할 것이고, 둘째, 특화산업의 성격에 따라 특화산업 육성전략과 지역산업 구조개편 및 혁신전략을 맞춤식으로 차별적으로 구사해야 할 것, 마지막으로 지식기반경제로의 전환에 맞추어 특화산업 육성전략과 지역혁신전략을 적절히 병행할 것이다.

• 한국학교수학회논문집
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• 제16권3호
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• pp.499-518
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• 2013

학생들이 학습하는데 교사의 역할은 중요하다. 교사는 학생들에게 수학 개념을 가르치고, 학생들이 수학적 사고력을 향상시킬 수 있도록 도움을 주어야 하기 때문이다. 이 연구의 목적은 무리수 정의와 무리수 연산에 대한 예비 중등 교사들이 갖고 있는 이해는 어떠하며, 어떠한 차원으로 이해가 이루어지고 있는지 파악하는 것이다. 예비교사들의 무리수에 대한 이해를 분석하기 위해 Skemp(1976)의 연구와 Tirosh et al.(1998)의 연구를 참고하여 '형식적 차원', '직관적 차원', '알고리즘적 차원', '도구적 차원'으로 분석틀을 구성하였다. 사범대학과 교육대학원 5곳에서 65명의 예비교사들을 대상으로 무리수 정의와 연산과 관련한 설문을 실시하였다. 분석 결과 예비교사들은 무리수 정의에 대해 대체적으로 올바른 지식을 갖고 있었으나, 그러지 못한 예비교사들도 몇 명 있었다. 무리수 연산(덧셈)에 대해서 예비교사들은 많은 잘못된 이해가 이루어지고 있었다. 이들은 주로 직관적 차원으로의 이해나 도구적 차원으로의 이해가 이루어지고 있었다.

• 대한가정학회지
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• 제41권10호
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• pp.149-171
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• 2003

This study was carried out as a basic fundamental research to propose a theoretical framework for Home Economics curriculum. This research employed the Delphi Method to reach a consensus with the experts in each related educational field of study for putting forth a newly proposed theoretical framework of a Home Economics curriculum. The finally proposed theoretical framework will definitely play a crucial role in establishing a standard framework for educational goals and curriculum content for Home Economics curriculum since it is put forth with a strong agreement from a high proportion of the expert groups. Results on the nature and characteristics of, structural framework of curriculum contents, and literacy through Home Economics were drawn from the 3-round Delphi survey: 1. Home economics has a liberal and practical-critical nature and it promotes enhancement of quality of life through a practical problem-solving process in maintaining family life. 2. The structural framework of the home economics curriculum contents is organized with three-dimensional components of content area (dimension 1), process area (dimension 2), focus of organizing content (dimension 3). 3. One's empowering capability through home economics education is proposed: inquiring knowledge and understanding phenomena for future society, solving practical problems in family life, developing higher order thinking skill, cultivating a positive attitude and a values system toward life.

• Journal of Biosystems Engineering
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• 제14권2호
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• pp.67-79
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• 1989

This study was conducted to investigate the applicability of true model theory for pull prediction in a powered lugged wheel-soil system and to examine the possibility of using principles of similitude in investigating the dimensions of soil parameters pertinent to a powered lugged wheel-soil system concerning the pull prediction. The following conclusions were derived from the study; 1) The pull of prototype wheels proved to be predicted by those of the model wheels for the range of the dynamic weight tested. The pull curves of models and prototype were respectively very similar in the shape. From this basic knowledge, it was enabled to apply the similitude theory to the performance prediction of the true model. 2) A conditional equation which can be used for the prediction of pull of prototype by model test was derived as follows. $n_f=n_1^{-b}$ where $n_f$ : force scale = $w/w_m$ $n_1$ : length scale = ${\ell}/{\ell}_m$ b : exponent on the length dimension of the soil property ${\alpha}$ The range of the numerical value of b, which was determined by the least square method, was found to be -2.0~-2.6. 3) Considering a relatively wide variation of b values in the pull prediction, b is considered to be a function of many variales. Thus it was concluded that there are several soil properties which are pertinent to the powered lugged-wheel-soil system concerning the pull prediction, and these soil properties may have the different effects on the pull of model and protytype wheels, to give the different dimension on the soil parameters.

• 대한지리학회지
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• 제48권3호
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• pp.466-481
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• 2013

이 연구는 지리 교육과정에서 지속가능발전 교육을 실천하기 위한 모델을 구안하고 있다. 논문의 전반부에서는 교육과정의 내용 차원과 인지적 차원을 평가하는 모델의 일반적 관점을 논의한다. 지속가능발전 교육은 기능과 시민성 함양을 목표로 하는 실행 프로그램을 필요로 한다. 후반부에서는 목표 차원을 포함시키는 방법을 살펴본다. 목표 차원에서는 지속가능발전 교육 목적과 일치하는 지식, 기능, 시민성을 활용한 실천적 접근이 요구된다. 연구자들은 한국과 미국의 지리 평가의 실제에 근거하여 이론적 모델을 개발하고, 모델은 두 나라 전문가 집단(고교 교사와 대학 교수)에게서 검증되었다. 이 연구는 유엔지속가능발전교육10년 국제이행 계획의 교육과정과 수업 활동을 보완할 것이다. 개발된 모델은 지속가능발전 교육 요소를 기존의 평가 활동에 도입하려는 제안을 구체화하는 데 활용될 수 있다.

• Safety and Health at Work
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• 제13권2호
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• pp.170-179
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• 2022

Background: The vulnerability of international migrant workers is on the rise, affecting the frequency of occupational accidents at workplaces worldwide. If migrant workers are managed in the same way as native workers, the consequences on safety assurance and risk management will be significant. This study aimed to develop the vulnerability factor model for migrant workers in seafood processing industries because of significant risk-laden labor of Thailand, which could be a solution to control the risk effectively. Methods: A total of 569 migrant workers were surveyed (432 Burmese and 137 Cambodian), beginning with 40 initial vulnerability factors identified in the questionnaire established from experts. The data were analyzed through descriptive analysis; exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used to ascertain the model. Results: The result of content validity >0.67 and the Cronbach's alpha of 0.957 specified the high reliability of 40 factors. The EFA indicated a total variance of 65.49%. The final CFA validated the model and had an empirical fitting; chi-square = 85.34, Adjust Goodness-of-Fit Index = 0.96, and root mean square error of approximation = 0.016. The structure concluded with three dimensions and 18 factors. Dimension 1 of the structure, "multicultural safety operation," contained 12 factors; Dimension 2, "wellbeing," contained four factors; and Dimension 3, "communication technology," contained two factors. Conclusion: The vulnerability factor structure developed in this study included three dimensions and 18 factors that were significantly empirical. The knowledge enhanced safety management in the context of vulnerability factor structure for migrant workers at the workplace.