• 한국국방경영분석학회지
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• 제33권1호
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• pp.117-133
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• 2007

무장정확도는 무기체계 획득의 기본 지표가 되는 성능으로 이에 대한 정확한 개념 정립과 시험평가 방법의 설정이 요구된다. 기존의 항공무장의 정확도 시험평가 방법은 무장의 탄착형태를 정확하게 고려하지 않았다. 본 연구는 확률 및 통계기법을 이용하여 최적 CEP 계산법과 각 시험평가 단계별 평가방안을 제시하였다. 먼저, 알려진 여러 무장정확도 계산법 중 항공무장의 탄착형태를 반영하는 최적 CEP 계산법으로 록히드마틴 CEP법과 존슨 CEP법을 추천하며, 시험평가 단계별 최적의 시험평가 방법을 제시하였다. 본 연구결과는 항공무장의 정확도 평가에 유용하게 사용될 수 있을 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제18권2호
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• pp.259-266
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• 2005

Steers (n=335) of known genetic backgrounds from four fundamentally different growth types were subjected to two production systems to study differences in carcass traits. Growth types were animals with genetic potential for large mature weight-late maturing, intermediate mature weight-late maturing, intermediate mature weight-early maturing and small mature weight-early maturing. Each year, in a nine-year study, calves of each growth type were weaned and five steers of each growth type were developed on pasture or feedlot and slaughtered at approximately 20 and 14 months of age, respectively. Data collected were pre-slaughter shrunk body weight (SBW); hot carcass weight (HCW); dressing percentage (DRESS); fat thickness at the $12^{th}$ and $13^{th}$ rib interface (FAT); percentage kidney, pelvic, and heart fat (KPH); longissimus muscle area (LMA); marbling score (MARB); quality grade (QG); and yield grade (YG). Year and growth type were significant for all carcass traits. The growth type${\times}$production system interaction was an important source of variation in SBW, HCW; FAT, YG and MARB. The same interaction was non-significant for DRESS, KPH, LMA and QG. Carcass differences in measures of fatness were greater in the feedlot system than in the pasture system. These data could aid producers in matching beef growth type to the production system most suitable for efficient use of resources.

• 운동영양학회지
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• 제25권4호
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• pp.24-37
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• 2021

[Purpose] To determine whether physical activity (PA), primarily the recommended 60 minutes of moderate-to-vigorous PA, is associated with gut bacterial microbiota in 10-year-old children. [Methods] The Block Physical Activity Screener, which provides minutes/day PA variables, was used to determine whether the child met the PA recommendations. 16S rRNA sequencing was performed on stool samples from the children to profile the composition of their gut bacterial microbiota. Differences in alpha diversity metrics (richness, Pielou's evenness, and Faith's phylogenetic diversity) by PA were determined using linear regression, whereas beta diversity (unweighted and weighted UniFrac) relationships were assessed using PERMANOVA. Taxon relative abundance differentials were determined using DESeq2. [Results] The analytic sample included 321 children with both PA and 16S rRNA sequencing data (mean age [SD] =10.2 [0.8] years; 54.2% male; 62.9% African American), where 189 (58.9%) met the PA recommendations. After adjusting for covariates, meeting the PA recommendations as well as minutes/day PA variables were not significantly associated with gut richness, evenness, or diversity (p ≥ 0.19). However, meeting the PA recommendations (weighted UniFrac R² = 0.014, p = 0.001) was significantly associated with distinct gut bacterial composition. These compositional differences were partly characterized by increased abundance of Megamonas and Anaerovorax as well as specific Christensenellaceae_R-7_group taxa in children with higher PA. [Conclusion] Children who met the recommendations of PA had altered gut microbiota compositions. Whether this translates to a reduced risk of obesity or associated metabolic diseases is still unclear.

• BMB Reports
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• 제39권3호
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• pp.304-310
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• 2006

Transcription factor NF-E2-related factor 2 (Nrf2) regulates the induction of Phase II detoxifying enzymes and antioxidant enzymes in response to many cancer chemopreventive compounds. In this study, we investigated the role of receptor associated coactivator (RAC3) or steroid receptor coactivator-3 (SRC3) and other nuclear co-regulators including CBP/p300 (CREB-binding protein), CARM1 (Coactivator-associated arginine methyltransferase), PRMT1 (Protein arginine methyl-transferase 1), and p/CAF (p300/CBP-associated factor) in the transcriptional activation of a chimeric Gal4-Nrf2-Luciferase system containing the transactivation domain (TAD) of Nrf2 in HepG2 cells. The results indicated that RAC3 up-regulated the transactivation activity of Gal4-Nrf2-(1-370) in a dose-dependent manner. The enhancement of transactivation domain activity of Gal4-Nrf2-(1-370) by RAC3 was dampened in the presence of dominant negative mutants of RAC3. Next we studied the effects of other nuclear co-regulators including CBP/p300, CARM1, PRMT1 and p/CAF, and the results showed that they had different level of positive effects on this transactivation domain activity of Gal4-Nrf2-(1-370). But importantly, synergistic effects of these co-regulators in the presence of RAC3/SRC3 on the transactivation activity of Gal4-Nrf2-(1-370) were observed. In summary, our present study showed for the first time that the 160 RAC3/SRC3 is involved in the functional transactivation of TAD of Nrf2 and that the other nuclear co-regulators such as CBP/p300, CARM1, PRMT1 and p/CAF can also transcriptionally activate this TAD of Nrf2 and that they could further enhance the transactivation activity mediated by RAC3/SRC3.

• 문화기술의 융합
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• 제4권4호
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• pp.77-87
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• 2018

본 연구는 최근 심각한 저출산에 대한 임신 인식 개선을 목적으로 프로그램을 개발하고 적용하여 그 효과를 분석한 혼합설계연구이다. 연구기간은 2018년 4월 1일부터 10월 26일까지 이었고, 연구에 참여한 대상은 M시와 M군에 거주하고 있는 젊은 여성들(19-21세)로 구성된 총 16명이었다. 프로그램 개발과정은 인식의 변화를 유도하기 위한 Dorothy Johnson 의 행위체계이론을 근간으로 하였으며, 문헌고찰과 국가정책 보고서를 참고하였다. 문헌을 통하여 개발된 프로그램은 가임기 여성 25명으로부터 저출산에 대한 원인 및 대안을 도출한 후 전문가 패널 토의 검증을 통하여 프로그램을 최종적으로 개발하였다. 프로그램 내용은 3영역으로 구성되었다. 1영역은 여성 생식관련 교육, 2영역은 친구 맺기, 3영역은 건강 체크이다. 양적 연구 결과 분석은 SPSS 18.0을 활용하여 Shapiro wilk와 Wilcoxon sign rank으로 분석하였고, 질적 연구결과 분석은 포커스 그룹을 활용하여 내용분석을 하였다. 연구결과, 본 프로그램을 적용하여 임신인식은 사전(M=3.21, SD=.342), 사후(M=4.46, SD=.398)로 통계적 유의 수준 하에서 유의미하게 상승하였고 (p<0.01), 본 프로그램에 대한 내용 분석 결과는 <깊이 생각하게 됨>, <임신은 축복>, <여성 당사자의 현실적인 요구 반영>로 3개의 주제가 도출되었다. 즉, 본 동료 그룹(peer group)을 활용한 임신 인식개선 프로그램을 적용한 결과, 참여 이전보다 임신에 대하여 깊게 생각하게 되었고, 임신은 축복이라는 인식을 하는 동시에 임신을 하는 당사자인 여성들의 현실적인 요구를 정책에 반영하길 원하고 있는 것으로 나타났다. 결론적으로, 본 프로그램은 젊은 여성을 대상으로 한 임신 인식 개선에 효과적이었다.

• 천문학회보
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• 제40권1호
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• pp.55.4-55
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• 2015

Korea Microlensing Telescope Network(이하 KMTNet) 망원경이 남반구의 세 관측소(칠레, 남아프리카 공화국, 그리고 호주)에 각각 설치되었다. 이 망원경은 주로 우리은하 팽대부 방향에 있는 무수히 많은 별을 관측하여 지구와 비슷한 성질을 가진 외계행성을 찾아낼 것이다. 우리은하 팽대부를 관측할 수 없는 기간(10월부터 다음해 2월까지)에는 CCD 카메라의 넓은 시야각($2^{\circ}{\times}2^{\circ}$)을 활용하여 여러 가지 과학연구를 수행할 계획이며, 일부 연구과제는 이미 진행 중이다. 관측을 통해 신뢰할 수 있는 측광결과를 얻기 위해서는 KMTNet 망원경의 필터와 CCD로 구성된 측광계의 특성을 이해하여야 한다. 본 연구에서는 많은 수의 표준별 영역을 관측하여 KMTNet 측광계의 특성을 파악하고, 정밀한 Johnson-Cousins 표준계 변환관계를 얻기 위한 표준화 관측 계획 및 초기 관측 결과를 제시하고자 한다.

• Journal of Advanced Marine Engineering and Technology
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• 제29권1호
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• pp.60-67
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• 2005

Generally. in the molecular dynamics simulations. the Verlet neighboring list algorithm is used for the reduction of a simulation time On the other hand. the application of the Verlet neighboring list forces the time evolution of a simulation system to follow an unrealistic path in a phase space. In equilibrium state, it does not matter with the simulation results because the individual molecule's motion is originally random and any effect due to a small deviation from a real time evolution can be completely ignored. However, if an unsteady state is involved. such a deviation may significantly affect to the results. That is, there is a Possibility that the simulation results Provide ones with any misleading data In this study we evaluated the effect due to the Verlet neighboring list in performing the simulation of a non-equilibrium state and suggested the method to avoid it.

• Ocean and Polar Research
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• 제26권3호
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• pp.475-480
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• 2004

Recently, less toxic and more effective anaesthetics are essential for marine fishes. Lidocaine belongs to a group of anaesthetics which are used as local anaesthetic in human medicine. This chemical was tested fer winter flounder, Pleunnectes americanus. Anaesthetic effect of lidocaine hydrochloride-sodium bicarbonate mixture (lidocaine $HCl/NaHCO_3$) was tested for the winter flounder at five different temperature regimes: $3^{\circ}C,\;7^{\circ}C,\;11^{\circ}C,\;15^{\circ}C\;and\;19^{\circ}C$ Anaesthetic dose and temperature-dependent relationship in exposure and recovery time were observed for the winter flounder of $17.2{\pm}0.1cm$ mean total length. Based on the results, anaesthetic lidocaine $HCl/NaHCO_3$ showed rapid exposure time and rapid recovery time for winter flounder. The results indicate that lidocaine $HCl/NaHCO_3$ can be used as suitable anaesthetic for this species.

• 한국분무공학회지
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• 제19권4호
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• pp.174-181
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• 2014

This study investigates the effects of nanoparticle size and temperature on the thermal conductivity enhancement of water-based alumina ($Al_2O_3$) nanofluids, using the centrifuging method and relative centrifugal forces of differing magnitude to produce nanofluids of three different particles without involving any dispersants or surfactants. We determined the coupling dependency in thermal conductivity enhancement relative to nanoparticle size and temperature of the alumina nanofluids and also experimentally showed that the effect of temperature on thermal conductivity is strongly dependent on nanoparticle size. Also, our experimental data presented that the effective medium theory models such as the Maxwell model and Hasselman and Johnson model are not sufficient to explain the thermal conductivity of nanofluids since they cannot account for the temperature- and size-dependent nature of water-based alumina nanofluids.

• 성인간호학회지
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• 제12권2호
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• pp.256-266
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• 2000

The purpose of this study was to develop and test the validity of the standardized Korean nomenclature of Nursing Outcomes Classification (NOC), developed by Johnson & Maas at the University of Iowa. The four phases of the study were: (1) translation of the NOC into Korean by the research team, (2) four nursing professors and eight nurses with various clinical backgrounds reviewed each nomenclature taking into consideration definitions and nursing activities. The modified Delphi method was used to determine the most appropriate nomenclature for each term; (3) Twenty four academic and clinical experts in nursing were given a questionnaire to rate each Korean nomenclature using a 5 point Likert scale ranging from very inappropriate to very appropriate; (4) the team determined the most appropriate Korean nomenclature for each class of the NOC. The mean validity score of 190 items was 4.54, but several nursing outcome had a score lower than 4.0. They included 'adherence behavior(3.3)', 'ambulation : walking(3.57)', 'transfer performance (3.57)', 'caregiving endurance potential(3.57)'.