• Title/Summary/Keyword: R-package

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The Mediating Effect of Problem-Solving Skills on Relationship between Confidence in Performing Core Nursing Skills and Clinical Performance of Nursing College Students (간호대학생의 핵심간호술 수행자신감과 임상수행능력의 관계에서 문제해결능력의 매개효과)

  • Eun Hee Seo
    • Journal of Industrial Convergence
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    • v.21 no.10
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    • pp.159-166
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    • 2023
  • This study is a descriptive research study to confirm the mediating effect of Problem-Solving Skills in the relationship between Confidence in Performing Core Nursing Skills and Clinical Performance of nursing college students. Participants included 211 nursing college students from S university in D city. Data was collected from August 14 to August 18, 2023 using a self-report questionnaires. The collected data were analyzed by descriptive statistics, Pearson's correlation coefficient, sem function and sobel function using the R.4.2.2 program. In this study, it was found that there was a significant positive correlation between the Confidence in Performing Core Nursing Skills, Problem-Solving Skills, and Clinical Performance, and it was confirmed that Problem-Solving Skills partially mediated the relationship between onfidence in Performing Core Nursing Skills and Clinical Performance. Therefore, it is suggested that Performing Core Nursing Skills and Problem-Solving Skills should be improved in order to improve the Clinical Performance of nursing college students.

Interrupting Performance of 7.2kV $SF_6$ Gas Electromagnetic Contactor Using Rotary Arc Principle (7.2kV급 로타리아크 소호방식을 이용한 $SF_6$가스 전자접촉기의 차단특성)

  • Chang, K.C.;Chong, J.K.;Shin, Y.J.;Kim, J.K.;Kim, G.S.
    • Proceedings of the KIEE Conference
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    • 1996.07a
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    • pp.77-79
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    • 1996
  • The model interrupters of $SF_6$ gas electromagnetic contactor whose ratings are 7.2kV, 4.0kA have been designed and manufactured on the basis of theoretical and computational analysis for its development. The eddy current analysis, the magnetic field analysis and the calculation of the rotational force on arcs have been conducted using FLUX2D package. The short circuit current interrupting tests have been conducted for the model interrupters using the simplified synthetic testing facility in KERI. The results show that the model interrupters have sufficient interrupting capability and the new design concept is prefer for good interrupting performance.

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Vibration of sumberged functionally graded cylindrical shell based on first order shear deformation theory using wave propagation method

  • Farahani, Hossein;Barati, Farzan
    • Structural Engineering and Mechanics
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    • v.53 no.3
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    • pp.575-587
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    • 2015
  • This paper focuses on vibration analysis of functionally graded cylindrical shell submerged in an incompressible fluid. The equation is established considering axial and lateral hydrostatic pressure based on first order shear deformation theory of shell motion using the wave propagation approach and classic Fl$\ddot{u}$gge shell equations. To study accuracy of the present analysis, a comparison carried out with a known data and the finite element package ABAQUS. With this method the effects of shell parameters, m, n, h/R, L/R, different boundary conditions and different power-law exponent of material of functionally graded cylindrical shells, on the frequencies are investigated. The results obtained from the present approach show good agreement with published results.

The image processor for color scanner application (Color scanner 적용을 위한 Image Processor)

  • Kim, H.H.;Kim, C.
    • Proceedings of the IEEK Conference
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    • 1998.06a
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    • pp.835-838
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    • 1998
  • 본 연구에서는 칼라 CCD 센서를 제어하여, shading과 .gamma. correction 된 데이터를 읽어 들여, 이를 이진레벨 데이터로 바꾼후, 원래의 다치레벨 또는 이진레벨 데이터를 SCSI나 DMA I/F를 통해 전달하는 ASIC을 설계하였다. 본 ASIC에서는 이진화를 위하여 문자 모드에서는 simple threshold와 LAT(local adaptive threshold) 알고리즘을, 그림모드에서는 stucki error diffusion 알고리즘을 적용하였다. 그리고, 구성은 CCD센서 제어블락, 스텝 모타 제어제어블락, 이미지 축소블락, 데이터 이진화 블락, 그리고 DATA I/F 블락 등으로 이루어져 있다. 또한 사용된 technology는 삼성 0.5um CMOS standard cell이며, 크기는 45K gates(내부 메모리 제외)이고, 160QFP package로 구현되었다. ㅎㅁㅅㄷㄴ (soqn apa

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NIR Spectroscopic Observation of Ultra-Long GRB 111209A and The Early Afterglow

  • Lee, Sang-Yun;Im, Myungshin
    • The Bulletin of The Korean Astronomical Society
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    • v.41 no.2
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    • pp.63.1-63.1
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    • 2016
  • We observed Ultra-Long GRB 111209A using NASA's 3m InfraRed Telescope Facility (IRTF). The observation was started around 40 min later than T0 = 07:12:08 UT of Swift's BAT, lasted for 24 min. The spectrum was extracted using Spextool package. The NIR SEDs show power law distribution indicating afterglow emission from the GRB according to the fireball model with beta ~ 1.2. Also they do not show thermal emission component compared to the SED of "Christmas burst" GRB 101225A. Because there is no other NIR data with this observation epoch, this data can be compared only with TAROT-R band. It seems NIR data has the same flare which exists in R band as an optical flare.

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SETUP OF RAPID AND EFFICIENT PROCESS OF TURBO-COMPRESSOR R&D WITH CFTURBO DESIGN AND FINE/TURBO CFD (CFturbo 설계 및 Fine/Turbo 유동해석을 활용한 빠르고 효과적인 터보압축기의 개발 과정 확립)

  • Kim, Jin-Kwon
    • 한국전산유체공학회:학술대회논문집
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    • 2010.05a
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    • pp.129-130
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    • 2010
  • Design of turbo-compressors has been considered to be a high-tech which only a few early industrialized countries could do efficiently since it requires not only deep understanding of high level gas dynamics and complex fluid dynamics but also accumulation of experiences in the feedback of expensive manufacturing and difficult testing to the design theory and empirical design coefficients. CFturbo is the turbomachinery design software which incorporates traditional well formulated German design technology and latest software technology of 3-dimensional graphics. Fine/Turbo is a powerful tubomachinery-oriented CFD package with quality structured grid topology templates for almost all the tubomachinery configurations for easy, fast and accurate CFD analysis. Rapid and effcient process off turbo-compressor R&D is setup with the combination of CFturbo and Fine/Turbo.

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Sway buckling of down-aisle, spliced, unbraced pallet rack structures

  • Beale, R.G.;Godley, M.H.R.
    • Steel and Composite Structures
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    • v.3 no.5
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    • pp.307-320
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    • 2003
  • This paper presents an efficient approach to the determination of the buckling loads of down-aisle, spliced, unbraced, pallet rack structures subjected to vertical and horizontal loads. A pallet rack structures is analysed by considering the stability equations of an equivalent free-sway column. The effects of semi-rigid beam-to-upright, splice-to-upright and base-plate-to-upright connections are fully incorporated into the analysis. Each section of upright between successive beam levels in the pallet rack is considered to be a single column element with two rotational degrees of freedom. A computer algebra package was used to determine modified stability equations for column elements containing splices. The influence of the position of splices in a pallet rack is clearly demonstrated.

Determination Grid Cell for Estimation of Radar Relationship (레이더 관계식 산정을 위한 격자망 크기 결정)

  • Lee, Won-Ho;Kim, Jin-Geuk
    • Journal of The Korean Society of Agricultural Engineers
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    • v.48 no.5
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    • pp.3-15
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    • 2006
  • The purpose of the study is to determine grid cell of radar relationship, and to promote the radar data on hydrology field. The study region is the Chungjudam basin with a drainage area of $6,648km^{2}$ located within the 260 km circle under the DWSR-88C C-band umbrella(Kwanak Mt Radar). Grid cell was produced to extract radar reflectivity and rainfall data of the same time and point using Arc-view software package. The grid cell size is to estimate mean correlation coefficient for $1km{\times}1km,\;2km{\times}2km,\;3km{\times}3km$ grid. The result of mean correlation coefficient showed good result(0.57) for the $1km{\times}1km$ grid cell. The 32 rainfall stations Z-R relationship was estimated in Chungjudam basin.

Bending Buckling Analysis of Circular Cylindrical Shell based on LOVE Type Solution (LOVE이론에 근거한 원통형쉘의 휨좌굴해석)

  • 김성도;하지명;이시형
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.10a
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    • pp.53-60
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    • 1999
  • The bending buckling behavior of circular cylindrical shell is studied. The classical analysis by Love type solution and the package program LUSAS for the structural analysis are used to estimate the critical stresses of circular cylindrical shells under axial compression and bending loads. In this paper, the Love type of buckling equation is carefully investigated and numerical results are presented for a wide range of radius-to-thickness (R/t) ratios and length-to-radius (L/R) ratios. These results show that the maximum critical bending stress is about 30~80% greater than the critical compressive stress

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Science Mapping Analysis for Blockchain by using R Package (R 툴을 이용한 블록체인 기술의 사이언스 매핑 분석)

  • Noh, Kyung-Ran;Kwon, Oh-Jin;Moon, Yeong-Ho;Sohn, Eun-Soo
    • Proceedings of the Korea Contents Association Conference
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    • 2018.05a
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    • pp.397-398
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    • 2018
  • 이 연구의 목적은 블록체인 기술에 관한 최신 연구동향을 살펴보는 것이다. 2010년 이후 블록체인 기술에 관한 연구가 급증하고 있다. 블록체인 기술 연구분야와 관련하여 가장 생산적인 연구자와 국가를, 많은 논문을 발표한 학술지를 탐지하고자 한다. 블록체인 기술 연구와 관련하여 가장 관련있는 키워드들을 밝혀내고자 한다. 여러 관점에서 블록체인기술 연구에 대한 빅픽쳐를 제공하고자 한다.

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