• 천문학회보
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• 제39권1호
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• pp.57.1-57.1
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• 2014

We present the preliminary results of CO outflow survey toward the 56 Very Low Luminosity Object (VeLLO) candidates at CO J=2-1 and J=3-2 transitions with two radio telescopes of the Caltech Submillimeter Observatory (CSO) and the Atacama Submillimeter Telescope Experiment (ASTE). The survey is aimed to understand the origin of the formation of low-mass stars or substellar objects. The VeLLO is a very faint (${\leq}0.1$ $L_{\odot}$) object deeply embedded in dense molecular clouds and believed to be a proto-brown dwarf which will be a brown dwarf or a faint protostar which has just formed with little mass accretion or which is in quiescent stage of episodic accretion. The candidates were searched for over all nearby ($d{\leq}450$ pc) Gould belt clouds and listed in a new catalogue of the VeLLO candidates by Kim et al. (2014 submitted). To diagnose present status and future fate of the VeLLOs, we conducted a systematic observation for the CO molecular outflows of the 56 VeLLOs to infer how accretion is being made around the VeLLOs. We found 17 VeLLO candidates either having a prominent wing in line profiles or showing bipolar intensity distribution of high velocity components. We will discuss the physical properties of these CO outflows and the identity of the VeLLO candidates.

• 여성건강간호학회지
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• 제7권3호
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• pp.373-381
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• 2001

Web sites on the internet are excellent resources for the younger generation to gain information related to sexuality education. The potential benefits of the information of sexuality education on web sites are obvious. But the information of sexuality education on web sites could also result in potentially negative effects. Yet the quality of the information of sexuality education on web sites is variable and difficult to assess. There is no rating criteria for quality assessment of the information on web sites. The rating criteria for quality assessment of information of sexuality education were investigated and reviewed. Among the criteria, best 15 items to evaluate the information of sexuality education on web sites were selected and identified in this study. 15 items were categorized to reliability ( 3 items ), content ( 6 items ), goal ( 2 items ), design & technology ( 4 items ). This 15-items questionnaires is considered as commonly implementable criteria for the information of sexuality education on web sites in Korean. 20 web sites related to sexualtiy education were evaluated and the results were discussed.

• 천문학회보
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• 제37권2호
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• pp.100.1-100.1
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• 2012

We present results of AKARI observations toward 8 dense molecular cores which are previously known to be "starless". These cores show some spectral features which may imply characteristic internal motions. The observations were carried out at 8 bands (3, 4, 7, 11, 65, 90, 140, and 160 micron) with IRC and FIS instruments equipped in the AKARI. The archive data of 2MASS and Spitzer were also utilized. We found that 1 (L1582A) of 8 cores has a few embedded young stellar objects (YSOs) while the rest of them are still starless. The YSOs found in L1582A are identified by the slope of the spectral energy distribution or by the AKARI color-color diagram. The unusually broad linewidth toward L1582A, which is twice broader than one of starless cores, is also consistent with the existence of protostars in this core. The physical environment and evolution of the other "starless" cores where any AKARI point source is not detected will be discussed with help of their molecular line observations.

• 천문학회보
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• 제44권1호
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• pp.70.3-70.3
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• 2019

Understanding how the filamentary structure affects the formation of the prestellar cores and stars is a key issue to challenge. We use the Heterodyne Array Receiver Program (HARP) of the James Clerk Maxwell Telescope (JCMT) to obtain molecular line mapping data for two prestellar cores in different environment, L1544 in filamentary cloud and L694-2 in a small cloud isolated. Observing lines are $^{13}CO$ and $C^{18}O$ (3-2) line to find possible flow motions along the filament, $^{12}CO$ (3-2) to search for any radial accretion (or infalling motions) toward the cores of gas material from their surrounding regions, and $HCO^+$ (4-3) lines to find at which density and which region in the core gases start to be in gravitational collapse. In the 1st moment maps of $^{13}CO$ and $C^{18}O$, velocity gradient patterns implying the flow of material were found at the cores and its surrounding filamentary clouds. The infall asymmetry patterns of HCO+ and $^{13}CO$ line profiles were detected to be good enough to analyze the infalling motions toward the cores. We will report further analysis results on core formation in the filamentary cloud at this meeting.

• 한국보육지원학회지
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• 제15권2호
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• pp.37-57
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• 2019

Objective: This study aimed to find out whether concern for children mediates the impact of parenting competence on the anger expression of mothers with young children. Methods: Subjects consisted of 219 mothers with children aged 3 to 6 years old attending kindergartens and daycare centers. The motehrs were given 3 rating scales about parenting competence, concerns about their children, and anger expression. The Parental Anger Scales measuring anger expression consisted of sub-factors such as situational anger, impulsive behavior, and difficulty of anger control. Results: Using the data collected, correlation analysis and the regression analysis procedure by Baron & Kenny(1968) were conducted; the significance of the mediating effects was verified by the Sobel test. First, the study found that there were significant positive correlations between mother's parenting competence, concern about children, and anger expression. Second, mothers' concern about their children had partial mediating effects on the relationships between parenting competence and overall anger expression, situational anger and impulsive behavior, and a complete mediating effect on the relationship between parenting competence and difficulty with anger control. Conclusion/Implications: These results were discussed in terms of the approach and content of parent education to help parents with young children control their anger.

• 한국IT서비스학회지
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• 제21권5호
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• pp.95-106
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• 2022

Recently, physical examinations have become an important strategy to reduce costs for individuals and society. Pre-physical counseling is important for an effective physical examination. However, incomplete counseling is being conducted because the demand for physical examinations is not predicted. Therefore, in this study, the demand for physical examination was predicted using text mining and stepwise regression. As a result of the analysis, the most recent text data showed a high explanatory power of the demand for physical examination. Also, large amounts of data have high explanatory power. In addition, it was found that the high frequency of the text "health food" reduces the number of health examination customers. And the higher the frequency of the text of the word "food", the lower the number of physical examination customers. However, when the word "wild ginseng" was exposed a lot on Twitter, the number of physical examination customers visiting hospitals increased. In other words, customers consume efficiently by comparing the health examination price with the price of consumer goods. The proposed research framework can help predict demand in other industries.

• 한국IT서비스학회지
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• 제22권4호
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• pp.123-140
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• 2023

In recent times, the global economy has been subject to increasing volatility, which has made it considerably more difficult to accurately predict economic indicators compared to previous periods. In response to this challenge, the present study conducts an exploratory investigation that aims to predict the Business Survey Index (BSI) by leveraging data mining techniques on both structured and unstructured data sources. For the structured data, we have collected information regarding foreign, domestic, and industrial conditions, while the unstructured data consists of content extracted from newspaper articles. By employing an extensive set of 44 distinct data mining techniques, our research strives to enhance the BSI prediction accuracy and provide valuable insights. The results of our analysis demonstrate that the highest predictive power was attained when using data exclusively from the t-1 period. Interestingly, this suggests that previous timeframes play a vital role in forecasting the BSI effectively. The findings of this study hold significant implications for economic decision-makers, as they will not only facilitate better-informed decisions but also serve as a robust foundation for predicting a wide range of other economic indicators. By improving the prediction of crucial economic metrics, this study ultimately aims to contribute to the overall efficacy of economic policy-making and decision processes.

• 인터넷정보학회논문지
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• 제12권4호
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• pp.145-156
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• 2011

본 연구는 e-저작권침해 일탈행위를 유발하는 원인을 규명하기 위해 진행되었다. 이를 위해 대학생 531명을 대상으로 설문을 실시하였고, 여기서 얻어진 데이터를 분석하기 위해서 구조방정식모델(SEM)을 사용하였다. 구조방정식모델의 설계는 익명상황, 규범의식, 처벌인지를 e-저작권침해에 대한 직접적인 변인으로 구성하였고, 또한 익명상황을 규범의식과 처벌인지에 대한 변인으로 설정하였다. 변인들 간의 직 간접적 인과관계를 분석한 결과, 익명상황은 e-저작권침해에 대한 직접적인 원인으로 나타났으나, 규범의식과 처벌인지 변인은 통계적으로 유의하지 않았다. 또한, 익명상황은 규범의식과 처벌인지에 대한 직접적으로 원인이며, 규범의식을 매개로 처벌인지에 간접적으로 영향을 미치는 것으로 밝혀졌다. 이러한 연구결과로 볼 때, e-저작권침해를 예방하기 위해서는 익명상황에서 규범을 지키는 것을 훈련할 수 있는 적절한 교육적 기회를 제공할 필요가 있다. 이를 위한 다양하고 효과적인 정보윤리 교육방법에 대한 모색이 이루어져야 할 것이다.

• 인터넷정보학회논문지
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• 제11권5호
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• pp.81-94
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• 2010

본 연구는 학교에서 통합교과적으로 실시되고 있는 청소년을 위한 정보윤리교육의 실천효과를 높이기 위한 방안의 하나로 표준화된 교수-학습 모델을 제안하고자 하였다. 이를 위해 교사들의 수업요구와 현장 수업사례를 일반화하는 상향식 접근을 통해 정보윤리 교수-학습모델을 제시하였다. 제시된 모델의 효율성 검증을 위해 정보문화교육 수혜학생과 비교집단에 대해 설문을 실시하였다. 그 결과 실험집단이 정보문화지수, 수업만족도, 실천의지 면에서 비교집단보다 높게 나타났으며, 그 차이는 통계적으로 유의미하였다. 이러한 연구결과에서 볼 때, 제시된 모델은 체계화되고 다양한 학습방법의 제공으로 학생들의 수업만족도를 높여 실천의지를 강화시킬 수 있을 것으로 기대된다. 또한 교사에게 적절한 수업방향과 방법을 안내함으로써 수업의 수월성을 높여줄 것이다.

• 한국콘텐츠학회논문지
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• 제16권10호
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• pp.267-276
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• 2016

본 연구는 관심사형이라고 불리우는 3세대 SNS인 소셜 큐레이션 서비스에 대해 교육적 활용 가능성을 탐색해 보고자 하였다. 이를 위해 9명의 대학생을 선정하여 약 50일간 소셜 큐레이션 서비스를 사용하게 한 후 Focus Group Interview(이하 FGI)를 실시하여 그 답변을 분석하였다. 자료 분석을 위해서는 NVivo 10 프로그램이 사용되었다. 분석 결과 소셜 큐레이션 서비스는 다양한 정보 수집, 나만의 카테고리 생성을 통한 분류 및 정리, 관심사에 대한 지속적 업데이트 가능, 기존 SNS에 비해 상대적 박탈감 감소가 장점으로 도출되었다. 보완 및 개선 사항으로는 한국어 콘텐츠 부족, 서비스의 단조로움이 제시되었는데 이를 해결하기 위해선 지속적 홍보가 필요한 것으로 나타났다. 또한 교육적 활용 측면에서는 개인, 팀별로 구분하여 개인은 자발적 정보 검색 및 활용, 나만의 자료 구성 가능, 자기주도적 학습 촉진이 가능하며, 팀별로는 공유를 통한 토론 활동, 발표 활동 가능성을 확인할 수 있었다.