• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2002년도 가을 학술발표회 논문집
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• pp.211-218
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• 2002

An entity-based integrated design product and process model uses product and process entities to describe design information and design activities, respectively. The concepts and notation for product and process entities in the entity-based integrated design model are similar to the concepts of object-oriented programming languages such as C++ and Smalltalk. This paper uses C++ to program an entity-based integrated design model for building frames structures. The design information and activities involved in the three dimensional building space, the locations of frames, and the grouping of frames represented as entities in the entity-based integrated design model are transformed to C++ codes. Each product or process entity can be basically transformed to an class. The attributes of an entity can be defined as variables and member functions of a class.

• 대한인간공학회지
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• 제25권4호
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• pp.1-7
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• 2006

The purpose of this study is to develop an efficient algorithm for the management of the shift schedule in nuclear power plants in consideration with the ergonomic criteria and the regulatory codes. The ergonomic criteria considered are the work hours, overtime-work frequency and working time, start and finishing time of works, allocation of rest times and duty-offs, rotating of shifts, etc. to comply with the regulations such as the Labor Standard Act, the ILO Convention No. 171, 178, "the detailed content of a periodic safety review," enforcement regulations 19-2 of the Atomic Energy Act. The developed algorithm for the shift schedule program adopts a heuristic method to minimize the difference the workload for shift workers in nuclear power plants.

• 한국항해학회지
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• 제10권2호
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• pp.57-81
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• 1986

The conventional school affairs management, with an example of Korea Martitime University (KMU), is studied through the university codes and its internal regulations and the inevitable problems of the conventional school affairs are analyzed. From the view points of complexity of the educational structure and increase in educational population, the computerized school affairs management is increasingly requested. Therefore, in order to design and implement a computerized school affairs management system, a code-system suitable for the KMU is, first of all, constructed and then a data base which copes with various reforms or changes is developed by using the code system and the IMAGE/DMBS of a HP-9040AM computer. A FORTRAN example program shows that the designed data base can be easily transformed into on-line system and made good use of managing school affairs. Furthermore, it is recommended that the university authority organize a research team for designing the total system in future university administration and solving difficult problems occurring through the computerization.

• Computers and Concrete
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• 제15권1호
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• pp.73-88
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• 2015

Following previous studies, the current paper describes the results of an experimental program concerning the repair of reinforced concrete columns by thixotropic pseudo plastic mortar, preformed to analyze and quantify the influence of initial construction damage to the behavior of the repaired element. Five columns (section scale 1:2) were designed according to the minimum requirements of reinforcement of ductility orientated codes' design with variables the percentages of initial construction damages. All were tested in axial compression with repeated cycles up to failure. For comparison reasons, another one of the same characteristics, yet healthy, was constructed and tested as a reference specimen. A numerical study (Finite Element Analysis) was conducted for further investigation of the behavior of the thixotropic mortar as repair material. The results indicate that: a) surpassing a specific amount of damage, columns even suitably repaired present lower strain capacity, b) finite element analysis present the same way of deboning of the repaired material taking into consideration the buckling of the reinforcement bars.

• Wind and Structures
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• 제3권4호
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• pp.255-266
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• 2000

Wind-induced interference effects on a building are the result of one or more adjacent buildings modifying the flow of wind around it, which may result in a significant increase or decrease in wind loads on the building. Wind loading standards and codes of practice offer little guidance to the designer for assessing the effects of interference. Experimental results on interference effects indicate that code recommendations may be significantly low (unsafe) or uneconomically conservative. The paper presents results of an extensive experimental program to study the wind flow mechanisms and to quantify the extent of wind load modifications on buildings due to interference effects. These results have been simplified and presented from the point-of-view of design and codification for the case of two buildings. Based on these results, general guidelines and limiting conditions defining wind interference are formulated and discussed.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제22권4호
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• pp.445-457
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• 2008

수치적으로 행렬의 고유치를 모두 계산할 수 있는 방법이 QR 방법이다. 이 방법의 효과적인 교육을 위하여 알고리듬의 이론적인 사실을 실습을 통하여 확인할 수 있는 매트랩 코드와 예를 제시한다.

• 지식경영연구
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• 제20권1호
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• pp.1-26
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• 2019

This tutorial introduces procedures and methods for performing structural equation modeling using R. For this, we present the whole process of analyzing the structural equations model from the confirmatory factor analysis to the path diagram generation using the lavaan package, which is relatively well evaluated among the R packages supporting the structural equation modeling, together with the R program codes. Considering that research applying structural equation modeling techniques is the mainstream in a variety of social sciences, including business administration, and that there is growing interest in open source R, this tutorial focuses on researchers who are looking for alternatives to traditional commercial statistical packages and is expected that it will be a useful guidebook for them.

• 한국정보과학회논문지:정보통신
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• 제31권6호
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• pp.556-565
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• 2004

알려지지 않은 악성 코드의 수행에 의한 피해를 막는 방법으로 프로그램의 실행 환경을 제한하는 '샌드박스' 기법이 많이 쓰여져 왔다. 코드의 비정상 행위를 탐지하는 이 기법은 구현 방식에 따라 적용성(configurability)과 편리성(ease of use) 간의 양면성(trade-off)을 가진다. 기존의 MAPbox는 이 두 가지를 동시에 만족 키기 위해 프로그램의 클래스별로 특정 샌드박스를 두는 클래스별 샌드박스 적용 기법을 사용한다[1]. 그러나, 이 방법은 정적으로 클래스의 수와 특성이 결정되므로 적용성에 한계가 있다. 본 논문에서는 MAPbox의 개념에 동적 클래스 생성 기능을 추가함으로써 적용성을 높이는 기법을 소개하고 이를 구현한다. 새로이 생성된 클래스에는 적절한 접근 제어를 가한다. MAPbox에 비해 적용성이 높아진 예로 MAPbox에서는 정상행위이지만 비정상행위로 판단되는 경우가 제안된 기법을 통해 올바르게 판단됨을 보인다. 또한 이 기법을 분석하고 실제로 구현하기 위해 어떠한 문제를 해결하였는지 보인다.

• 여성건강간호학회지
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• 제26권3호
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• pp.205-212
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• 2020

Purpose: This study aimed to identify the components of preterm birth (PTB) through women's personal narratives and to visualize clinical symptom expressions (CSEs). Methods: The participants were 11 women who gave birth before 37 weeks of gestational age. Personal narratives were collected by interactive unstructured storytelling via individual interviews, from August 8 to December 4, 2019 after receiving approval of the Institutional Review Board. The textual data were converted to PDF and analyzed using the MAXQDA program (VERBI Software). Results: The participants' mean age was 34.6 (±2.98) years, and five participants had a spontaneous vaginal birth. The following nine components of PTB were identified: obstetric condition, emotional condition, physical condition, medical condition, hospital environment, life-related stress, pregnancy-related stress, spousal support, and informational support. The top three codes were preterm labor, personal characteristics, and premature rupture of membrane, and the codes found for more than half of the participants were short cervix, fear of PTB, concern about fetal well-being, sleep difficulty, insufficient spousal and informational support, and physical difficulties. The top six CSEs were stress, hydramnios, false labor, concern about fetal wellbeing, true labor pain, and uterine contraction. "Stress" was ranked first in terms of frequency and "uterine contraction" had individual attributes. Conclusion: The text network analysis of narratives from women who gave birth preterm yielded nine PTB components and six CSEs. These nine components should be included for developing a reliable and valid scale for PTB risk and stress. The CSEs can be applied for assessing preterm labor, as well as considered as strategies for students in women's health nursing practicum.

• 한국정보처리학회논문지
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• 제6권4호
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• pp.1022-1031
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• 1999

본 논문에서는 VIOLA(VIsual Object-oriented Language for Multimedia Applications)이 시각 언어 프레임워크를 제안하다. VIOLA는 웹 응용 프로그램을 자동으로 생성시켜주는 도구이며, 사용자가 정확한 HTML 태그나 CGI 프로그래밍을 모르더라도 자동으로 고수준의 웹 응용 프로그램을 작성할 수 있게 해준다. VIOLA에서는 사용자 접속 설계 부분과 프로그램의 논리 설계 부분 자료흐름 방식에 의해 통합되어 나타난다. 사용자 접속 설계 부분은 직접 조작과 위지윅을 지원하고, 프로그램 논리 설계 부분은 추상화된 아이콘과 사용자 접속과의 연결을 위한 자료흐름 방식을 사용한다. 프로그램 논리는 도구에서 정의된 클래스를 재사용하여 결합함으로써 자동으로 CGI 프로그램으로 생성되어진다. 이러한 방법은 직관적이고 사용하기 쉬워서 초보자라도 쉽고 빠르게 고수준의 웹 응용 프로그램을 생성할 수 있다. 또한 웹 문서의 생성과 저작에 필요한 일련의 기능들이 통합되어 잇다. 생성된 CGI 프로그램은 java로 구현되기 때문에 HTML 문서와 더불어 플랫폼에 독립적이다.