• Title/Summary/Keyword: 이차 데이터 분석

Search Result 105, Processing Time 0.028 seconds

The Impact of Secondary Trauma Stress on Occupational Stress Levels of Sexual Violence Support Workers : The Moderating Effect of Work-Related Job Education (성폭력피해자 지원센터 종사자의 이차적 외상 스트레스가 직무 스트레스에 미치는 영향 : 직무교육의 조절효과)

  • Shin, Soomin
    • Korean Journal of Social Welfare Studies
    • /
    • v.49 no.1
    • /
    • pp.109-132
    • /
    • 2018
  • This study investigated the impact of the secondary trauma stress experienced by workers who support sexual violence victims on occupational stress level, and verified the moderating effect of the job education from support facilities in this relationship. The data analyzed in this study were sampled from "The Primary Study on The Development of Training Program to Cultivate Professional Workers of Support Organizations for Sexual Violence Survivors" as a secondary data and 482 nationwide workers were selected. By applying SPSS PROCESS macro, the moderation model was analyzed. The analysis results are as follows. First, sexual violence victim support workers' secondary trauma stress has a significantly influence on occupational stress level of workers. Second, the job education from support agencies themselves moderates the relationship between the secondary trauma stress and occupational stress level of support agents. It also showed that the higher level of job education participates, the less the experience of being stressed on the job. Thus, on the basis of the result, the theoretical discussion on the secondary trauma stress and occupational stress level of sexual violence victim support worker was drawn out and the empirical implication on the direction of the education for job related was suggested.

Numerical Analysis of Caching Performance in Content Centric Networks Using Markov Chain (마코프체인을 이용한 콘텐츠 중심 네트워크의 캐싱 성능 분석)

  • Yang, Won Seok
    • The Journal of the Korea Contents Association
    • /
    • v.16 no.4
    • /
    • pp.224-230
    • /
    • 2016
  • Recently, CCN(Content Centric Network) has been extensively interested in the literature to transfer data traffic efficiently according to the rapid growth of multimedia services on the Internet. CCN is a new networking paradigm to deliver contents efficiently based on the named content not the named or addressed host. This paper presents a mathematical approach for analyzing CCN-caching systems with two routers. Considering the stochastic characteristics of communication networks, the caching system is modeled as a two dimensional Markov chain. This paper analyzes the structural feature of the transition rate matrix in the Markov chain and presents a numerical solution for the CCN-caching performance of the two router system. In addition, various numerical examples are presented.

Load model estimation method for residential load and nomal load using measured data (실측 데이터를 이용한 일반용부하와 가정용부하의 부하모델 추정방안)

  • Park, Rae-Jun;Kwon, Oh-Sung;Song, K.;Kim, Kyu-Ho;Park, Jung-Wook;Jo, Jong-Man;Lee, Sung-Moo
    • Proceedings of the KIEE Conference
    • /
    • 2011.07a
    • /
    • pp.606-607
    • /
    • 2011
  • 전력계통의 부하를 모델링하기 위해서는 부하 모델 구조의 선정과 부하모델 구조의 파라미터를 추정하는 방법이 필요하다. 부하 모델의 구조는 ZIP모델을 사용하고, 부하 모델의 파라미터를 추정하는 방법으로는 Levenberg-Marquardt방법을 사용하여 한국전력공사 변전소이차 측에서 측정된 실측 데이터를 이용하여 부하를 모델링하였다. 또한 모델링된 부하의 대표파라미터를 선정하고 대표파라미터를 실제 계통에 적용하였을 때의 오차를 분석하였다.

  • PDF

f-MRI with 2D & 3D Visual Stimuli

  • 김치영;김남주;문길영;임종우;정성택;최보영;신경섭;안창범
    • Proceedings of the KSMRM Conference
    • /
    • 2001.11a
    • /
    • pp.141-141
    • /
    • 2001
  • 목적: 최근 들어 컴퓨터 그래픽의 발전과 함께 가상 현실 등에 연구 및 응용이 급증하고 있다. 본 연구의 목적은 fMRI를 이용하여 이차원 및 삼차원 시각자극에 대한 뇌의 기능을 살펴보는 것이다. 같은 영상에 대한 2D와 3D영상을 보여 주면서, fMRI 영상 데이터를 얻었다. 사람에게 미치는 자극 중에 하나인 시각 자극에서 2D와 3D에 대해 반응하는 차이를 규명하고자 하였다. 대상 및 방법: Gradient echo를 기반으로 한 EPI 영상기법을 이용하여, 가톨릭 의대의 3.0 Tesla whole body MRI system에서 실험하였다. 해부학적 영상을 얻기 위해서는 spin echo를 이용하였다. 4명의 volunteer에 대해 같은 영상에 대한 2D와 3D영상을 보여주면서 실험을 수행하였다. 시각자극의 paradigm은 5단계 (rest, active, rest, active, rest)로 하였고, 3번의 rest와 2번의 active구간을 사이에 두었다. 각각의 구간은 10번의 iteration으로 이루어져 있고, 첫 번째 구간은 15번으로 하여 처음 5개의 결과를 버리고, 데이터를 얻었다. 결과는 spm99를 이용하여 분석하였다.

  • PDF

f-MRI with 2D & 3D Visual Stimuli

  • 김치영;김남주;문길영;임종우;정성택;최보영;신경섭;안창범
    • Proceedings of the KSMRM Conference
    • /
    • 2001.11a
    • /
    • pp.110-110
    • /
    • 2001
  • 목적: 최근 들어 컴퓨터 그래픽의 발전과 함께 가상 현실 등에 연구 및 응용이 급증하고 있다. 본 연구의 목적은 fMRI를 이용하여 이차원 및 삼차원 시각자극에 대한 뇌의 기능을 살펴보는 것이다. 같은 영상에 대한 2D와 3D영상을 보여 주면서, fMRI 영상 데이터를 얻었다. 사람에게 미치는 자극 중에 하나인 시각 자극에서 2D와 3D에 대해 반응하는 차이를 규명하고자 하였다. 대상 및 방법: Gradient echo를 기반으로 한 EPI 영상기법을 이용하여, 가톨릭 의대의 3.0 Tesla whole body MRI system에서 실험하였다. 해부학적 영상을 얻기 위해서는 spin echo를 이용하였다. 4명의 volunteer에 대해 같은 영상에 대한 2D와 3D영상을 보여주면서 실험을 수행하였다. 시각자극의 paradigm은 5단계 (rest, active, rest, active, rest)로 하였고, 3번의 rest와 2번의 active구간을 사이에 두었다. 각각의 구간은 10번의 iteration으로 이루어져 있고, 첫 번째 구간은 15번으로 하여 처음 5개의 결과를 버리고, 데이터를 얻었다. 결과는 spm99를 이용하여 분석하였다.

  • PDF

A Factor having Influence on Housebreaking Victimization (주거침입 피해에 영향을 미치는 요인)

  • Lee, Yoo-Na;Jeong, Dae-Gwan
    • Korean Security Journal
    • /
    • no.38
    • /
    • pp.137-161
    • /
    • 2014
  • The aim of this study was to investigate the factors influencing on housebreaking victimization in South Korea. It is important that a resident, police officer, and policy makers use Routine activities/lifestyle theory in order to explore whether proximity and exposure to offenders or presence of guardianships affect the resident's risk of being victimized. In this context, the current study utilizes proximity variables: disorder of residence, exposure variables: hours of empty house and guardianship variables: social networks, security equipment. The study employs secondary data(Korean Crime Victim Survey in 2008) responses from a sample of 4, 710 resident. and Logistic regression analysis was used to examine whether the likelihoods of housebreaking victimization was associated with the measures of proximity and exposure and the lack of guardianship. The result of the study showed that proximity(disorder of residence) and guardianship (security equipment) are statistically significant predictors that is associated with an enhanced risk of school violence victimization while controlling for other variables. Further policy implications of the study will be discussed.

  • PDF

A study on the visualization of financial transfer entropy by the k-means clustering algorithm (K-means 클러스터링 알고리즘을 이용한 financial transfer entropy 시각화 연구)

  • Kim, Jinkyu;Yoon, Sungroh
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2009.11a
    • /
    • pp.409-410
    • /
    • 2009
  • 최근 Transfer entropy 이론을 주가지수 데이터에 적용하여 각 국가 간 상호 주고받는 정보의 방향성을 분석하고자 하는 연구가 진행되었다. 하지만 이렇게 각 국가 간의 정보 이동 관계를 고려하는 것도 중요하지만, 나아가 비슷한 방향성을 갖는 국가 군을 찾고 이를 분석하는 것 또한 중요한 연구이다. 기존의 연구 결과는 각 국가 간의 Entropy만 계산한 이차원 구조로 이 같은 경향성을 파악하기가 쉽지 않았다. 따라서 본 연구에서는 이 경향성을 쉽게 찾기 위해 k-means 클러스터링 알고리즘을 적용한 시각화 방법을 제안하고자 한다.

A Comparison Study for Ordination Methods in Ecology (생태학의 통계적 서열화 방법 비교에 관한 연구)

  • Ko, Hyeon-Seok;Jhun, Myoungshic;Jeong, Hyeong Chul
    • The Korean Journal of Applied Statistics
    • /
    • v.28 no.1
    • /
    • pp.49-60
    • /
    • 2015
  • Various kinds of ordination methods such as correspondence analysis and canonical correspondence analysis are used in community ecology to visualize relationships among species, sites, and environmental variables. Ter Braak (1986), Jackson and Somers (1991), Parmer (1993), compared the ordination methods using eigenvalue and distance graph. However, these methods did not show the relationship between population and biplot because they are only based on surveyed data. In this paper, a method that measures the extent to show population information to biplot was introduced to compare ordination methods objectively.

Effect of Tm2O3 addition on dielectric property of barium titanate ceramics for MLCCs (Tm2O3 첨가가 MLCC용 $BaTiO3 유전특성에 미치는 영향)

  • Kim, Jin-Seong;Lee, Hee-Soo;Kang, Do-Won;Kim, Jeong-Wook
    • Journal of the Korean Crystal Growth and Crystal Technology
    • /
    • v.20 no.1
    • /
    • pp.25-29
    • /
    • 2010
  • Thulium oxide-doped barium titanate ceramics for MLCCs with perovskite structure were prepared by a sintering process at $1320^{\circ}C$ for 2 h in a reduced atmosphere. The effect of $Tm_2O_3$ addition on dielectric property of barium titanate ceramics has been studied in terms of their microstructures. Moreover, the phase identification of the dielectric specimens was conducted to define the secondary phase (pyrochlore). The specimen doped with 1 mol% $Tm_2O_3$ exhibited the highest dielectric constant. However, the dielectric constants of specimens with more than 2 mol% $Tm_2O_3$ to $BaTiO_3$ were the lower values than that of 1 mol% doped one. The grain size and the formation of pyrochlore phase associated with the dielectric properties were examined through morphology development and the structural analysis. Furthermore, these data were compared with the property of the dielectric material doped with $Er_2O_3$. It could be concluded that the dielectric property of ceramic capacitors were attributed to the change of pyrochlore phase and the tetragonality of $BaTiO_3$ with doping.

Proteome Analysis of Drosophila melanogaster Used 2-DE and MALDI- TOF-MS (이차원 전기영동과 펩타이드 지문 검색법을 이용한 초파리의 프로테옴 분석)

  • Park Jeong-Won;Cha Jae-Young;Song Jae-Young;Kim Hee-Kyu;Kim Beom-Kyu;Jeon Beong-Sam
    • Journal of Life Science
    • /
    • v.15 no.3 s.70
    • /
    • pp.427-433
    • /
    • 2005
  • With the completely discovery of the Drosophila genome sequence, the next great challenge is to extract its biological information by systematic expression and to perform functional analysis of the gene. Here we reported a proteome analysis of D. melanogaster with two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption ionization time-of-flight mass spectrometer (MALDI-TOF-MS). The cell extracts of D. melanogaster, $200{\mu}g$ were resolved to more than 400 silver-stained spots by 2-DE. The most abundant protein spots were ranged from 4.0-7.5 of pI and from 15-90 kDa of molecular weight. The excised spots were destained and in-gel digested by trypsin. The masses of the resulting peptide mixtures were measured by MALDI-TOF-MS. Identified proteins were compared with measured peptide mass and a dynamic peptide searching database which is accessible via the internet. The results revealed that identified proteins were produced by 59 genes derived from 65 protein spots.