• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.153-164
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• 2021

The increasing importance of such fields as embedded systems, pervasive computing, and hybrid systems control is increasing attention to the time-dependent aspects of system modeling. In this paper, we focus on modeling conceptual time. Conceptual time is time represented in conceptual modeling, where the notion of time does not always play a major role. Time modeling in computing is far from exhibiting a unified and comprehensive framework, and is often handled in an ad hoc manner. This paper contributes to the establishment of a broader understanding of time in conceptual modeling based on a software and system engineering model denoted thinging machine (TM). TM modeling is founded on a one-category ontology called a thimac (thing/machine) that is used to elaborate the design and analysis of ontological presumptions. The issue under study is a sample of abstract modeling domains as exemplified by time. The goal is to provide better understanding of the TM model by supplementing it with a conceptualization of time aspects. The results reveal new characteristics of time and related notions such as space, events, and system behavior.

• 한국주거학회논문집
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• 제3권2호
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• pp.33-41
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• 1992

The purpose of this study was (1) to analyze concept and types of residential mobility (2) to compare of the residential mobility in the fields of different disciplives, and (3) to develop a conceptual framework of residential mobility on the ecosystem approach comparisons of residential mobility concepts in many discipines. The major findings were each disciple played an important role to develop the concept of residential mobility with some limitations. A conceptual frame-work was developed on the basis of these findings.

• 보건행정학회지
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• 제13권2호
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• pp.44-66
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• 2003

I. Background and Purpose Health Indicator system and measurement of health status are an important fields in national health fields. This study reviewed the overall concepts of health and health indicators, health indicator system. The purposes of this study are to build the conceptual health framework, and suggest a health indicator system, in order to correspond to the situation of national health and the demand of International organizations. II. Scope and Contents The scope of this study ; - Review of tile conceptual health framework, health indicators, and health Indicator system - Selection and development of tile new individual health indicators - Suggestion of tile revised health indicator system III. Results of Study This study intented to build the conceptual and framework of national health and provide the measurement tools of health status. This study developed the health indicator system through the conceptual and hierarchial approach to national health. The health indicator system contains 6 concern: areas and each sub-areas. The major concern areas are health state and behavior, deathㆍdiseaseㆍdisability, health care utilization, health resources, health expenditure and finance, other affecting factors on health. This health indicator system is corresponding to the situation of health status patterns and the demand of international organizations. And this health indicator system is considering the present health data production system and the availability of health data.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.419-425
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• 2013

Recently AEC industry has required construction automation according to becoming large and complex. Thus BIM-based construction project is increased and used in whole fields of AEC industry. Quantity take-off and estimation fields are important factor for decision-making in conceptual and schematic design stages of construction projects. The purpose of this study improves reliability of the estimation through QTO based on Open BIM. Scope and method to apply QTO is to select conceptual design stage through LoD(Level of Detail) in AEC field and to extract information from BIM model through analysis of IFC structure. This study proceeds three step to make BIM model and check the model quality and calculate QTO. The methodology of QTO using IFC is to verify of result in this study and expects utilizing in design stage of construction projects. The result from this study is expected to decrease the risk factor and time of estimation in the project early phase through improving reliability of schematic estimation.

• 대한수학교육학회지:수학교육학연구
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• 제13권3호
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• pp.287-307
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• 2003

본 연구에서는 수학학습에서 가장 많이 사용되고 있는 상징인 등호의 개념에 대해 분석하고 학생들의 이해 정도를 조사하였다. 등호는 =라는 상징에 의해 ‘같다±라는 의미가 부여되어 있지만, 사용되는 수학적 상황에 따라 해석이 다를 수 있다. 따라서 등호개념을 분석하기 위해 본 연구는 Vergnaud의 개념의 장에 의거하여 등호를 분석하였다. 그에 따르면, 개념은 상징, 조작적 불변, 상황으로 구성된 것이며, 조작적 불변에는 실행개념과 실행정리가 있다. 이러한 분석 내용에 따라 학생들이 등호 상징을 우리말로 어떻게 읽고, 등호가 포함된 식에서 무엇이 같은 것인지 또는 등호가 어떤 의미로 사용되고 있는지 설명하고, 등호와 관련된 오류를 잘 교정할 수 있는지에 대하여 조사하였다. 본 연구 결과는 수학 상징의 학습에서 수학 사회에서 규정한 상징의 표기, 그 수학 상징이 의미하는 것, 그 상징이 사용되는 상황적 맥락이 함께 고려되어야 함을 시사한다.

• International Journal of Advanced Culture Technology
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• 제3권2호
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• pp.118-123
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• 2015

IT environment gets more complicated in terms of open platform, network standards, device design and hardware, etc. Smart network and application are in the fields of corporate as well as national competition for future fusion technology. In development environment focused on computers, the ideas of authoring tool have been presented in terms of improved software productivity. In smart environment where subdividing works are consecutively done, current authoring tool should be effectively updated for effective development of programs and easier access to business works. The basic concept of a new conceptual App development tool, Smart App Authoring Tool, which has been designed in this study and enables to apply on-site requirements to smart phones, is to develop Apps on the level using easy-to-learn Word or Excel in a computer. Therefore, this study is intended to design a conceptual Smart App Authoring Tool to optimize the cost and time for developing and maintaining new application services under various smart phone platform environments. Based on the performance of smart app authoring tool herein, every people can develop a smart app program at moderate level. So this paper have designed a conceptual smart app authoring tool. This study presented educational efficiency of the authoring tool by developing business Apps under various business environments and applying them under university and high school environments.

• 한국과학교육학회지
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• 제38권1호
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• pp.27-42
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• 2018

본 연구는 기술의 본성(NOT: Nature of Technology)에 대한 개념 정리를 위하여 최근 수행된 NOT 관련 문헌 연구를 통하여 포괄적인 NOT 개념 틀을 제안하고 이를 바탕으로 국내외의 과학기술공학 전문가들의 기술 개념에 대한 인식을 탐구하고자 하였다. 과학과 기술교육 영역의 다양한 NOT 관련 선행연구를 분석하여 제시된 NOT 영역은 1. 인공물로서의 기술(Technology as artifacts), 2. 지식으로서의 기술(Technology as knowledge), 3. 실행으로서의 기술(Technology as practice), 4. 시스템으로서의 기술(Technology as system), 5. 사회적 역할의 기술(The role of technology in society), 그리고 6. 기술의 역사(History of technology) 6가지로 제안되었다. 또한 제안된 6개의 NOT 영역을 기준으로 과학기술공학 전문가들 30명의 인식 분포를 조사한 결과 전문가들은 다양한 NOT 개념 중에서 3. 실행으로서의 기술, 4. 시스템으로서의 기술, 그리고 5. 사회적 역할의 기술의 3가지 영역을 주로 인식하고 있는 것으로 나타났다. 이것은 NOT 선행연구에서 대중이나 학생들이 주로 기술을 '인공물로서의 기술' 또는 '응용 과학으로서의 기술'로 이해하고 있다는 결과와는 달리 과학기술공학 전문가들은 기술의 개념을 기술철학적 차원의 복잡하고 추상적인 '인간의 총체적 지식과 행위'로 이해하고 있다는 것을 보여주었다.

• 한국의류학회지
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• 제28권9_10호
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• pp.1253-1264
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• 2004

The purpose of this study is to develop clothing shopping orientation[CSO] scale reflecting the conceptual structure of CSO. For this purpose, a questionnaire composed of comprehensive 85 CSO items was developed through 2-step preliminary tests. Data was collected from two samples. One sample(n=559) was for scale development and the other sample(n=235) was for cross validity test. Descriptive analysis, correlation analysis, exploratory factor analysis, regression analysis, ANOVA, and confirmatory factor analysis were used for data analysis. For each lower-dimension within the CSO conceptual structure model, 1-2 items were selected based on the quantitative and the qualitative standards. As a result, a CSO scale composed of 31 items was developed, and reliability, construct validity, cross validity, convergent validity, discriminant validity, and criterion validity of the scale were verified. This study has significance in offering the standardized scale to both the academic and the practical fields.

• 한국지구과학회지
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• 제39권2호
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• pp.193-207
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• 2018

본 연구의 목적은 우리나라에서 수행된 지구과학교육 분야의 개념변화 연구 동향을 분석하여 향후 개념변화 연구의 기초 자료로 제공하는 것이다. 우리나라 지구과학 개념변화 연구의 경향성을 논문의 키워드, 발표 연도, 논문 출처, 연구 목적, 연구 대상, 연구 영역, 연구 방법 측면에서 분석하였다. 연구 대상은 우리나라 지구과학교육의 개념변화연구 논문이 처음 발표된 1989년부터 2017년 7월까지, 총 126편의 지구과학교육의 개념변화 논문이었다. 본 연구의 분석 결과는 다음과 같다. 첫째, 지구과학 개념변화 논문은 '개념변화'라는 용어를 '오개념', '선개념' 보다 더 많이 사용하였다. 둘째, 개념변화 논문은 2000년대에 많은 양적인 성장을 이루었다. 셋째, 개념변화는 석사 학위의 연구주제로 많이 이루어지고 있었다. 넷째, 오개념 조사와 그에 따른 교정을 함께 다룬 연구가 많았고, 오개념 조사로는 자유응답 검사법을, 오개념 교정 방법으로는 인지갈등 수업모형과 CAI 교수전략을 주로 활용하였다. 다섯째, 초등학생 대상 연구가 가장 많이 이루어졌다. 여섯째, 개념변화 연구의 지구과학 영역은 천문과 대기의 비중이 높았다. 마지막으로, 연구 초기에는 양적 분석 방법을 많이 사용하였지만, 2010년대에 들어서는 질적 분석 방법을 많이 사용하였다. 향후 개념변화의 연구 과제로 예비 및 현직 교사 대상의 개념변화 연구, 지질 해양 대기 등 다양한 영역으로의 연구 확대, 오개념 형성원인 파악 및 정의적 요인에 관한 연구 등을 제안하였다.

• Wind and Structures
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• 제13권4호
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• pp.309-326
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• 2010

CFD techniques try to find their way in the bridge engineering realm nowadays. However, there are certain fields where they offer superior performance such as conceptual bridge design and bidding design. The CFD studies carried out for the conceptual design of a 425 m length cable-stayed bridge are presented. A CFD commercial package has been employed to obtain for a set of cross-sections the aerodynamic coefficients considering 2D steady state. Additionally, for those cross-sections which showed adequate force coefficients, unsteady 2D simulations were carried out to detect the risk of vortex shedding. Based upon these computations the effect on the aerodynamic behavior of the deck cross-section caused by a number of modifications has been evaluated. As a consequence, a new more feasible cross-section design has been proposed. Nevertheless, if the design process proceeds to a more detailed step a comprehensive set of studies, comprising extensive wind tunnel tests, are required to better find out the aerodynamic bridge behavior.