• 한국수학교육학회지시리즈A:수학교육
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• 제50권4호
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• pp.467-487
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• 2011

The purpose of this study is to analyze of gifted students' improvement on mathematical attitude and problem-solving ability through project-based materials in science high school. For this study, research questions are established as follows. 1. Does the project-based materials-used instruction have a positive effect on improving problem-solving ability? 2. Does the project-based materials-used instruction have a positive effect on improving mathematical attitude? To solve these research questions, this study employed a survey and interview type investigation for gifted students' mathematical attitude and problem-solving ability. A subject of classes were randomly selected among the 11th grader in D science high school and designated one class as the experimental group and the other class as the control group. Twelve hours of the project-based materials-used instruction and the traditional textbook-oriented instruction had been carried out in each class. Findings on this study are as follows: First, the project-based material-used instruction is shown to be more effective in enhancing problem-solving ability than the traditional textbook-oriented instruction. Second, the project-based material-used instruction is shown to be more effective in improving mathematical attitude than the traditional textbook-oriented instruction.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1113-1116
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• 2009

The attempt to use a 3D model each field such as design, structure, construction, facilities, and estimation in the construction project has recently increased more and more while BIM (Building Information Modeling) that manages the process of generating and managing building data has risen during life cycle of a construction project. While the 2D Drawing based work of each field is achieved in the already existing construction project, the BIM based construction project aims at accomplishing 3D model based work of each field efficiently. Accordingly, the solution that fits 3D model based work of each field and supports plans in order to efficiently accomplish the relevant work is demanded. The estimation, one of the fields of the construction project, has applied BIM to calculate quantity and cost of the building materials used to construction works after taking off building quantity information from the 3D model by a item for a Quantity Take-off grouping the materials relevant to a 3D object. A 3D based estimation program has been commonly used in abroad advanced countries using BIM. The program can only calculate quantity related to one 3D object. In other words, it doesn't support the take-off process considering quantity of a contiguous object. In case of temporary materials used in the frame construction, there are instances where quantity is different by the contiguous object. For example, the formwork of the temporary materials quantity is changed by dimensions of the contiguous object because formwork of temporary materials goes through the quantity take-off process that deduces quantity of the connected object when different objects are connected. A worker can compulsorily adjust quantity so as to recognize the different object connected to the contiguous object and deduces quantity, but it mainly causes the confusion of work because it must complexly consider quantity of other materials related to the object besides. Therefore, this study is to propose the solution that automates the formwork 3D modeling to efficiently accomplish the quantity take-off of formwork by preventing the confusion of the work which is caused by the quantity deduction process between the contiguous object and the connected object.

• 정보교육학회논문지
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• 제9권2호
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• pp.243-254
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• 2005

지식정보사회의 변화와 정보통신기술의 발달과 대중화에 따른 교육의 개혁에 대한 요구가 증대되고 있으며, 그 요구에 부응하고자 최근 가상교육에 대한 관심이 고조되고 있다. 가상교육은 '정보 전달 모델'을 지양하고, '지식 구성 모델'을 채택해야 한다. 이에 가상교육 환경에서 학습자가 다양한 상호작용을 통하여 지식을 재구성하거나 생성할 수 있는 기회를 제공하고 지원할 수 있는 방안으로서 '프로젝트기반학습' 방법의 도입과 더불어서 '가상학습커뮤니티'의 구성과 운영이 필요하다. 본 연구는 교사교육에 초점을 두고, 프로젝트기반학습 방법의 활용 방안과 가상학습커뮤니티의 구성 및 운영 방안을 체계화하고, 실제 운영이 가능한 프로젝트 기반 가상학습커뮤니티 운영 시스템을 구축하였다. 시스템은 5가지 큰 메뉴와 세부 메뉴로 이루어지는데, Home(커뮤니티운영취지, 알림방, 프로젝트목록, 요구함), 프로젝트학습센터(학습활동 준비실, 모둠학습실, 발표회장), 만남의 광장(모둠별 멘터링 신청, 생각 나눔터, 전문가와의 만남, 설문조사참여, 포럼참여, 작품전시회), 자료창고(프로젝트학습사례, 프로젝트학습자료, 교사교육자료, 기타자료), 관리기능(프로젝트 관리, 프로젝트 사례, 아이디어뱅크, 파트너찾기, 교수자대화방, 자료나누기, 경험나누기, 설문조사관리, 포럼관리) 등으로 구성된다.

• 정보교육학회논문지
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• 제8권4호
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• pp.537-545
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• 2004

프로젝트기반 학습은 학생들의 탐구력 향상과 창의성 신장에 많은 효과가 있음에도 불구하고 학교 정규수업 시간에 이를 수행하기에는 여러 가지로 제약이 따랐다. 그러나 최근에 인터넷이 널리 보급되면서 기존의 학교 수업에서의 시공간의 제약을 해결하게 되었다. 본 논문에서는 프로젝트 주제와 관련된 멀티미디어 자료를 사용하고 인터넷 서비스를 활용하여 학생들이 지속적으로 프로젝트에 참여할 수 있도록 하고 프로젝트 진행과정을 모두 볼 수 있는 프로젝트 기반 웹사이트를 개발하고 구현하였다. 개발한 웹사이트의 타당성을 검증하기 위해서 초등학교 4학년 한반을 대상으로 30일에 걸쳐 프로젝트를 진행한 결과 학생 중심의 자기주도적 학습 능력과 새로운 주제 발굴에 대한 탐구력이 향상되었다.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.823-830
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• 2022

The risk of project execution increases due to the enlargement and complexity of Engineering, Procurement, and Construction (EPC) plant projects. In the fourth industrial revolution era, there is an increasing need to utilize a large amount of data generated during project execution. The design is a key element for the success of the EPC plant project. Although the design cost is about 5% of the total EPC project cost, it is a critical process that affects the entire subsequent process, such as construction, installation, and operation & maintenance (O&M). This study aims to develop a system using machine-learning (ML) techniques to predict risks and support decision-making based on big data generated in an EPC project's design and construction stages. As a result, three main modules were developed: (M1) the design cost estimation module, (M2) the design error check module, and (M3) the change order forecasting module. M1 estimated design cost based on project data such as contract amount, construction period, total design cost, and man-hour (M/H). M2 and M3 are applications for predicting the severity of schedule delay and cost over-run due to design errors and change orders through unstructured text data extracted from engineering documents. A validation test was performed through a case study to verify the model applied to each module. It is expected to improve the risk response capability of EPC contractors in the design and construction stage through this study.

• 대한인간공학회지
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• 제30권4호
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• pp.503-507
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• 2011

Objective: This paper presents the factors influencing the effectiveness of materials handling equipments in agriculture. Background: Agriculture is one of the job categories where work-related musculoskeletal disorders(MSDs) are the most common. Statistics shows that majority of farm workers is exposed to repetitive and forceful body movements, lifting, lowering, pushing, pulling, or carrying heavy materials. In such a working environment, materials handling equipments are required and introduced to assist in the prevention of MSDs and other farm injuries. Method: Examples of materials handling equipments are rail carts, portable lifts, and bale handlers. Contributing factors influencing the effectiveness of materials handling equipments supplied in agriculture were identified based on the lessons learned from previous government-funded ergonomic projects. Results: Contributing factors identified include: (1) forward-looking attitude for the standardization of farming, its environments, and handling equipments, (2) participation of farm members in the process and evaluation of project, (3) leadership of project manager, (4) reinforcement of safety education and training, and (5) project selection and priority of handling equipment. Conclusion: Government-funded research planners, farmers, ergonomists, and farm machine experts are recommended to consider the factors identified when implementing materials handling equipments in agriculture. Application: Actual or potential application of this research includes recommendation for the effective implementation of material materials handling equipments in agricultural sectors.

• 대한수학교육학회지:학교수학
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• 제7권2호
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• pp.169-192
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• 2005

본 연구는 수학 영재들을 위한 교수$\cdot$학습 자료 개발의 준거를 설정하고 교수$\cdot$학습 자료 개발의 절차 모형을 개발하여 그에 따른 주제탐구형 수학 영재 교수$\cdot$학습 자료의 실제적인 모델을 제시하는 것이다. 이를 위하여 우선 수학 영재 교수$\cdot$학습 자료 개발 준거와 파네스의 창의적 문제해결 학습 모형에 따라 '약수를 통한 자연수 탐구'라는 주제로 4차시 분량의 주제 탐구형 수학 영재 교수$\cdot$학습 자료를 개발하였다. 이 자료를 이용하여 대학부설 영재교육원의 초등 수학 심화/사사반 학생들과 교육청 부설 영재교육원 초등 수학반 영재아들을 대상으로 4차에 걸쳐 현장에 적용하면서 수정 및 재구성을 한 자료를 부록에 실었다. 그리고 그 자료를 수업에 적용$\cdot$분석함으로써 원형 및 자료 개발의 타당성을 확인하는 과정을 통해 얻게된 수학 영재 교수$\cdot$학습 자료 개발의 방향과 시사점을 제안하였다.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.311-317
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• 2007

"Environmentally Sound and Sustainable Development (ESSD)" is a key word in recent years. The construction industry, have put a great influence on ergonomic and sustainable environment. Recently, "green building certifications", such as Indoor Air Quality (IAQ) and eco-friendly material regulation have been established. With this regard, new construction and aged-housing remodeling projects are required to meet these certification criteria. Multi-housing residents have great concern on eco-product, since many cases are reported that Sick Building Syndrome is caused by toxic substance from building materials. Aged-housing remodeling project is very unique in that building residents are selected prior to design phase. Therefore, the analysis of resident's need for building materials in aged-housing remodeling is relatively easy compared to new building construction. As such, it is very important to analyze their preferences for eco-friendly materials prior to project execution. The purpose of this study is to find the needs of residents and priority of their needs. Based on their needs and priority, this paper provides a new strategy in using environment-friendly materials and maximizing their satisfaction level when aged housing remodeling is constructed. In addition, this paper provide new criteria in selecting new developed environmental materials in remodeling projects for the purpose of improving the safety and health level in construction industry.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.975-983
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• 2022

This paper presents an innovative way of integrating scheduling and project controls with the environmental impact of a construction project to track, monitor, and manage environmental emissions at the activity level. As a starting point, scheduling and project controls help monitor the status of a project to provide an assessment of the duration and sequence of activities. Additionally, project schedules can also reflect resource allocation and costs associated with various phases of a construction project. Owners, contractors and construction managers closely monitor tasks or activities on the critical path(s) and/or longest path(s) calculated through network based scheduling techniques. However, existing industry practices do not take into account environmental impact associated with each activity during the life cycle of a project. Although the environmental impact of a project may be tracked in various ways, that tracking is not tied to the project schedule and, as such, generally is not updated when schedules are revised. In this research, a Cradle to Gate approach is used to estimate environmental emissions associated with each activity of a sample project schedule. The research group has also investigated the potential determination of scenarios of lowest environmental emissions, just as project managers currently determine scenarios with lowest cost or time. This methodology can be scaled up for future work to develop a library of unit emissions associated with commonly used construction materials and equipment. This will be helpful for project owners, contractors, and construction managers to monitor, manage, and reduce the carbon footprint associated with various projects.

• 한국콘텐츠학회논문지
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• 제14권5호
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• pp.480-486
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• 2014

본 연구는 영자 신문 발간 활동이 영어 의사소통 능력 향상에 미치는 긍정적인 영향을 확인하며 프로젝트 기반의 출판 과정을 통한 독립적이면서도 협동적인 학습 환경의 구현가능성을 탐색한다. 한국과학영재학교의 첫 번째 영자 신문 발간 기획은 프로젝트 기반의 교수학습 방법을 적용한 일련의 단계를 거쳐서 완성되었다. 영어 능력과 참여도에 따른 학생 편집자 선발 과정을 시작으로 분야와 주제 및 제재를 선택하고 역할과 기사를 배분하며 결과물을 통합 편집하는 과정을 거친다. 전 과정에 걸쳐 참여자들은 최소한의 지도 감독 아래서 독립적이면서도 협력적으로 활동에 참여하였다. 사후 설문조사에 따르면 성공적인 영자신문의 발간이 전반적 영어 능력을 향상 시켰을 뿐만 아니라 긍정적인 학습자 자아인식과 주도적인 학습 태도를 키웠다고 나타났다. 본 연구는 언어 교육 뿐 아니라 통합적인 프로젝트 기반 교수 학습에 있어 신문 잡지 등의 출판 활동이 주는 장점을 논하는 한편, 향후 프로젝트 교수 학습 방법과 영어 의사소통능력 향상과 관련된 보다 심화된 연구가능성을 제시한다.