• 성인간호학회지
• /
• 제26권1호
• /
• pp.11-21
• /
• 2014

Purpose: This study was conducted to describe core competencies and identify factors affecting core competencies among infection control nurses (ICN). Methods: Infection control nurses from hospital with more than 200 beds comprised the sample. Questionnaires were sent to the sample via e-mail. One hundred and three questionnaires were returned. Data were analyzed with descriptive statistics and stepwise multiple regression via SPSS/WIN 21.0. Results: The core competency level of healthcare workers area was the highest that of the education and research was the lowest. There were significant differences in core competencies related to demographics such as age, clinical carrier, infection control carrier, position, academic degree, infection control specialist license, hospital location, and hospital type. The explained variances for the core competency were 38.3% and the contributing factors to core competencies were infection control carrier and infection control specialist license. Conclusion: It showed various levels of core competencies depending on infection control nurses' demographics and hospital traits, therefore consistent management efforts for the licensing and career path of infection control would be required.

• 한국전산구조공학회논문집
• /
• 제16권3호
• /
• pp.291-299
• /
• 2003

본 연구에서는 연속체해석을 토대로, 병렬코아를 갖는 아웃리거구조물의 수평하중에 대한 응력과 변위를 구하기 위한 방법을 제안하였고, 아웃리거의 위치에 따른 구조물의 거동에 대해 연구하였다. 아웃리거와 코아가 만나는 위치에서 코아의 회전병위가 아웃리거의 회전변위와 일치한다는 적합조건으로부터 아웃리거의 구속모멘트, 코아의 휨모멘트, 기둥의 축방향력, 그리고 구조물의 수평변위 등을 유도하였다. 구조모델들을 이용하여 MIDAS-GEN 프로그램에 의한 결과와 비교하였고, 병렬코아를 갖는 아웃리거구조물에 대해 만족할만한 결과를 얻었다. 구조물 최상단의 수평변위는 코아의 위치보다는 아웃리거의 위치에 의해 크게 영향을 받는 것으로 조사되었다. 비록, 이 논문에서 제시된 공식들이 이상적인 아웃리거구조물에 대한 것이지만 병렬코아를 갖는 실제 아웃리거구조물의 응력과 변위의 근사치를 추정하고, 구조물의 거동을 예측하기 위한 수단으로 유용하게 사용될 수 있을 것이다.

• 한국구조물진단유지관리공학회 논문집
• /
• 제25권4호
• /
• pp.1-11
• /
• 2021

본 연구에서는 코어 및 오프셋 아웃리거 구조의 수평거동을 파악할 목적으로 70층 규모의 초고층 아웃리거 건물을 대상으로 MIDAS-Gen을 이용하여 구조해석 및 구조설계를 실시하였다. 그리고 본 해석의 주요한 변수는 아웃리거의 강성과 아웃리거의 평면상 위치로 설정하였다. 또한 본 해석결과에 근거하여 코어 및 오프셋 아웃리거 구조의 슬래브, 아웃리거, 외곽 기둥과 같은 구조요소들의 수평거동을 분석하였다. 본 해석연구의 결과에서는 아웃리거의 강성과 아웃리거의 평면상 위치가 초고층 아웃리거 구조시스템의 수평거동에 어떤 영향을 주는지를 분석하여 나타내었다. 특히 코어 아웃리거 구조에서는 전단벽과 외곽기둥을 연결하는 아웃리거가 위치하는 슬래브에 응력이 크게 작용하였고, 오프셋 아웃리거 구조에서는 전단벽과 아웃리거 사이에 위치한 슬래브에 응력이 크게 작용하였다. 또한 본 연구결과는 초고층 아웃리거 구조시스템의 합리적인 구조설계에 필요한 공학 데이터를 얻는데 중요한 도움이 된다고 사료된다.

• Advances in Computational Design
• /
• 제7권1호
• /
• pp.19-35
• /
• 2022

In this paper, the optimum location of the belt truss-outrigger for a combined system of framed tube, shear core and outrigger-belt truss is calculated. The optimum location is determined by maximization of the first natural frequency. The framed tube is modeled using a non-prismatic cantilever beam with hollow box cross section. The governing differential equation is solved using the weak form integral equations and the natural frequencies of the structure are calculated. The graphs are introduced for quick calculation of the first natural frequency. The location of the belt truss-outrigger that maximizes the first natural frequency of the structure is introduced as an optimum location. The structure is modeled using SAP-2000 finite elements software. In the modelling, the location of the belt truss-outrigger is changed along the height of the structure. With various locations of the outrigger, the lateral deflection of the all stories and axial force in the columns of the outer tube are calculated. The analysis is repeated by locating the outrigger-belt truss at the optimum location. The analysis results are compared and effect of the optimum location on the lateral deflection and the shear lag phenomena are investigated.

• 한국구조물진단유지관리공학회 논문집
• /
• 제24권1호
• /
• pp.116-124
• /
• 2020

코어 위치변화에 따른 횡력저항성능 분석을 위하여, 대칭 평면형 20층 건물을 대상으로 3차원 구조해석을 수행하였다. 중심 코어, 1축 편심 코어, 2축 편심 코어로 구분하여 4가지 해석모델을 구성하고, 고유치해석, 풍하중 해석, 지진하중 해석을 수행하였다. 중심 코어 건물에서는 비틀림이 발생하지 않았으나, 편심 코어의 배치에 따라 휨과 비틀림이 복합적으로 발생하였으며 횡력저항성능이 저하되었다. 코어의 편심 배치에 따른 풍하중 크기의 변화는 작으나, 최대 횡변위는 코어의 편심 배치에 의하여 크게 증가하는 것으로 확인되었다. 또한, 편심 코어의 경우 횡방향 강성의 저하로 인하여 중심 코어에 비해 지진하중이 다소 감소하였으나, 비틀림의 영향으로 최대 층간변위비는 크게 증가하는 것으로 확인되었다. 이러한 결과들을 바탕으로 코어의 위치에 따른 구조거동을 확인하고, 계획 및 설계 단계에서 코어 배치의 가이드라인으로 활용할 수 있다.

• 한국군사과학기술학회지
• /
• 제14권3호
• /
• pp.345-352
• /
• 2011

This paper focuses on the properties analysis of 9mm bullet dual structure core to substitute current lead core by environment-friendly combination of W-Cu-Ni system high density composite materials. So the four combination samples were made of dual core with the different center of gravity location backward or forward compare to that of lead type bullet, and we experimented about the performance of 9mm bullet dual structure core. In the experimental results, the outer shape of core of four environment friendly samples on the target maintain marginally, while the current lead core bullets are completely crushed after hitting the target. The penetration depth of environment friendly samples excel seven times to lead type bullet and the three out of four samples with forward adjusted center of gravity penetrate deep as twice as ones backward. The impact tolerance of all four samples satisfies military specification, however, more firing tests are required to improve reliability of scattering distribution.

• 한국화재소방학회논문지
• /
• 제8권2호
• /
• pp.3-15
• /
• 1994

The purpose of this paper is to present refernce data to be considered in designing for the fire safety of high-rise office buildings. This paper deals with the characteristics of high-rise office buildings in the fire safety aspects, the basic principles for the fire safety of high-rise office building design, and this study is focused particularly on the location of the escape route of core plan for fire safety in high-rise office buildings.

• Journal of Information Technology Applications and Management
• /
• 제9권3호
• /
• pp.13-30
• /
• 2002

ebXML (Electronic Business using extensible Markup language), sponsored by UN/CEFACT and OASIS, is a modular suite of specifications that enables enterprises of any size and in any geographical location to conduct business over the Internet. Using ebXML, companies now have a standard method to exchange business messages, conduct trading relationships, communicate data In common terms and define and resistor business processes. It is the mission of ebXML that provides an open XML-based infrastructure enabling the global use of electronic business information in an interoperable, secure and consistent manner by all parties for creating a single e1ectronic electronic market. This paper briefly overviews the concept of core component, context, assembly rule and context rule. Then, It designs by standard specifications of ebXML core component commonly used in an industry and among industries, and assembles business messages by using XML schema. Therefore, it suggests the mechanism which effectively exchanges business messages among the trading partners. This paper designs core component by using only three business messages of retail industry : orders, dispatch report, sales report.

• Smart Structures and Systems
• /
• 제8권5호
• /
• pp.487-499
• /
• 2011

The parametric resonance problems of axisymmetric sandwich annular plate with an electrorheological (ER) fluid core and constraining layer are investigated. The annular plate is covered an electrorheological fluid core layer and a constraining layer to improve the stability of the system. The discrete layer annular finite element and the harmonic balance method are adopted to calculate the boundary of instability regions for the sandwich annular plate system. Besides, the rheological property of an electrorheological material, such as viscosity, plasticity, and elasticity can be changed when applying an electric field. When the electric field is applied on the sandwich structure, the damping of the sandwich system is more effective. Thus, variations of the instability regions for the sandwich annular plate with different applying electric fields, thickness of ER layer, and some designed parameters are presented and discussed in this study. The ER fluid core is found to have a significant effect on the location of the boundaries of the instability regions.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
• /
• pp.329-331
• /
• 2005

This paper proposes a line-to-ground cable fault location method for underground distribution system. The researched cable is composed of core and sheath. And underground cabke system has been analyzed using Distributed Parameter Circuit. The effectiveness of proposed algorithm has been verified through EMTDC simulations.