• 한국전문물리치료학회지
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• 제11권2호
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• pp.9-16
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• 2004

The purpose of this study was to validate the Korean version of the Gross Motor Function Measure (GMFM) using Rasch analysis. The data was obtained from the assessments of 59 children with cerebral palsy in Korea and were applied to Rasch's rating scale model to estimate the difficulty and goodness-of-fit of each item. Rasch modeling helped us to identify 76 items from the original 88-item GMFM that form an unidimensional hierarchical scale to rearrange 76 items in order of difficulty. Reliability coefficients of the 88-item and 76-item GMFM were .99 and .99, respectively. In this preliminary report, the Korean version of GMFM seems to have significant validity and reliability. These results may be useful in assessment of gross motor functions in children with cerebral palsy.

• Bioinformatics and Biosystems
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• 제2권2호
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• pp.71-74
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• 2007

Cell phenotypes are determined by groups of functionally related genes. Microarray profiling of gene expression provides us response of cellular state to its perturbation. Several methods for uncovering a cellular network show reliable network reconstruction. In this study, we present reconstruction of genetic regulatory network of inflammation bowel disease in human peripheral blood mononuclear cell. The microarray based on Affymetrix Gene Chip Human Genome U133 Array Set HG-U133A is processed and applied network reconstruction algorithm, ARACNe. As a result, we will show that inferred network composed of 450 nodes and 2017 edges is roughly scale-free network and hierarchical organization. The major hub, CCNL2 (cyclin A2), in inferred network is shown to be associated with inflammatory function as well as apoptotic function.

• 항공우주시스템공학회지
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• 제7권2호
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• pp.29-34
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• 2013

Safety requirements for aircraft and system functions include minimum performance constraints for both availability and integrity of the function. These safety requirements should be determined by conducting a safety assessment. The depths and contents of aircraft system safety assessment vary depending on factors such as the complexity of the system, how critical the system is to flight safety, what volume of experience is available on the type of system and the novelty and complexity of the technologies being used. Requirements that are defined to prevent failure conditions or to provide safety related functions should be uniquely identified and traceable through the levels of development. This will ensure visibility of the safety requirements at the software and electronic hardware design level. This paper has prepared to study on promoting the efficiency of establishing hierarchical safety requirements from aircraft level function to item level through system safety processes.

• 한국보건간호학회지
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• 제26권1호
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• pp.158-173
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• 2012

Purpose: This study was conducted in order to investigate factors related to depression of elderly women in a Metropolitan city. Methods: Subjects included 118 elderly women older than 65 years of age. Structured questionnaires were used for data collection, and descriptive statistics, t-test, ANOVA, Pearson correlation coefficients, and hierarchical regression analysis were performed for data analysis. Results: A significant difference in depression was observed according to number of chronic diseases(F=4.963, p=.001). Significant factors influencing depression included number of chronic diseases (${\beta}$=.265, p<.01), cognitive function (${\beta}$=.290, p<.01), quality of sleep(${\beta}$=.212, p<.01), and nutritional state (${\beta}$=.161, p<.05). These factors explained 54.2% of the variance. Conclusion: Findings of this study suggest the need for development of nursing strategies to decrease the incidence of depression in elderly women.

• 한국해양공학회지
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• 제13권1호통권31호
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• pp.11-17
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• 1999

A three dimensional finite element generation code has been developed attaching simple blocks. Block can be either a quadrature or a cube depending on the dimension of a subject considered. Finite element serendipity basis functions are employed to map elements between the computational domain and the physical domain. Elements can be generated with wser defined progressive ratio for each block. For blocks to be connected properly, a block should have a consistent numbering scheme for vertices, side nodes, edges and surfaces. In addition the edge information such as the number of elements and the progressive ratio for each direction should also be checked for interfaces to have unique node numbers. Having done so, user can add blocks with little worry about the orientation of blocks, Since the present the present code has been written by a Visual Basic language, it can be developed easily for a user interactive manner under a Windows environment.

• 한국멀티미디어학회논문지
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• 제11권6호
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• pp.869-874
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• 2008

The work of creating character motion needs the higher professional technology and sense and the creating work of realistic and natural motion possess the most part of production term. In this paper we introduce the easy and convenient 3D animation authoring tool which makes the motion based on whole-body inverse kinematics and motion editing function. The proposed 3D animation authoring tool uses the forward kinematics using quaternion and whole-body inverse kinematics to determine the rotation and displacement of skeleton. Also, it provides the motion editing function using multi-level B-spline with quasi-interpolant. By using the proposed tool, we can make 3D animation easily and conveniently.

• 농촌지도와개발
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• 제30권2호
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• pp.103-118
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• 2023

This study aims to develop the living SOC function index and classified classes using the GIS-based spatial analysis method by applying the "Central Place Theory" as basic data for classifying living areas necessary for establishing rural spatial strategies in Boryeong. Boryeong-si is classified as a southern living area in the northern living area, centering on Daecheon-dong, the first class, and it is analyzed that living services such as used car service procurement and education are needed, and the southern living area needs a mid- and high-vehicle service delivery system in Ungcheon-eup. It is believed that this study can provide important clues to the classification of central functional facilities suitable for rural centers, reinforcement of vulnerable functional facilities by living area, and provision of living services.

• 한국인터넷방송통신학회논문지
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• 제16권4호
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• pp.125-131
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• 2016

한방 설진 시스템의 자동화 과정에서 혀 영상 분할은 가장 중요한 분야이다. 그러나 대부분의 한방 설진 시스템의 혀 영상 분할 방식은 사용자 기반의 메뉴얼 방식이나 반자동 방식으로 제안되어 왔다. 따라서 본 논문에서는 한방 설진 시스템의 완전 자동화를 위해서 기존의 스네이크 알고리즘을 기반으로 한 혀 영상 분할의 새로운 방법을 제안한다. 제안한 방법은 기존의 스네이크 알고리즘을 개선한 방법으로서 설진을 위한 혀 영상 특성을 이용하여 포인트들이 안에서 밖으로 역추적하면서 스네이크 에너지 함수가 최소화될 수 있도록 내부 에너지 함수를 개선하였고, 외부 에너지를 계산하기 위해서는 계층적 공간 필터링 방법을 적용하여 잡음에 강인한 특징을 갖는다. 또한 제안한 방법은 표본영상 실험과 실영상 실험을 수행한 결과, 기존 스네이크 알고리즘보다 배경 잡음에 강인함을 보였으며, 임의의 포인트 한 개를 선택하고 해당 포인트의 시작점, 중간점, 끝점에서의 에너지 값을 분석하여 국소적 최저치에 빠지지 않는 강인함을 보였다.

• 대한전자공학회논문지
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• 제19권6호
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• pp.1-8
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• 1982

이 논문은 하중나무에 의한 래더형 회로의 새로운 해석 방법을 제안한다. 종래의 정보 구조를 나타내는 나무와는 달리 가지의 하중를 임피이던스 Z와 어드미턴스 Y로 하고, 그의 양단의 마디를 전압과 전류의 짝으로 표시하여 Z와 Y집합의 계층 구조의 나무를 구성한다. 다음에 나무에서 생성 레벨을 정의하고 기준 레벨과 임의의 레벨간을 path함으로써, 구동점 임피이던스, 전달함수, 전달 임피이던스를 계산에 의하지 않고 시각적으로 동시에 구한다. 본 방법에 의하여 가역정리를 유도함으로써 타당성을 입증하고 4단자 정수 및 피이드백, Tr결합 텐덤 회로에도 적용된다. In this paper a new analytic method for Ladder networks by weighted tree is proposed. In contrast to conventional tree concept that represents only information structure, in this paper, a tree with hierarchical structure is established by giving wei체t of impedance Z and admittance Y to branch and representing each node of its branch as a pair of voltage and current. Then, by defining generation level from tree structure and by parsing between standand level and arbitrary level, driving point impedance, transfer function and transfer impedance are simultaneously obtained instead of complex calculation method by inspection. The validity of this method is proved by the reciprocal theorem and this method is applied to four-terminal constants and the feedback network.

• 노동경제논집
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• 제30권2호
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• pp.87-118
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• 2007

본 논문에서는 한국직업능력개발원의 "전문대 및 대학 졸업생 경제활동상태 추적조사" 2005년 자료를 주로 이용하여 대학서열화와 노동시장 성과 간의 관계를 지방대 졸업생에 대한 임금차별을 중심으로 분석하였다. 주요 결과로는 첫째, 지방대학 졸업생 월평균 임금은 174.77만원으로 수도권대학 졸업생에 비해 11.5% 낮았으나 지방대학의 낮은 수능점수에 상당 부분 기인하였다. 둘째, 위계선형모형(Hierarchical Linear Model)을 적용하여 학교의 임금효과를 추정한 결과 개인간 임금차이의 12.2%만이 학교간 차이에 기인하는 것으로 나타나 학교효과가 예상보다 작음을 확인하였다. 셋째, 대학 진학시의 선택편의(selection bias)를 고려한 Heckman형 2SLS 임금함수를 추정한 후 Neumark 임금분해를 시도한 결과 수도권대학과 지방대학 졸업생 간 임금격차는 전적으로 수도권대학 졸업생의 인적 속성과 직업 속성상의 우위에 기인하였으며, 특히 수도권에 집중된 상위권 대학의 영향이 결정적으로 작용하였다. 넷째, 분위회귀 기법을 적용하여 임금분위별 지방대생 차별을 분석한 결과 임금분위와 무관하게 대체로 -4.01%~-2.51% 범위의 임금차별이 관찰되었다.