• 정보교육학회논문지
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• 제22권3호
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• pp.397-407
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• 2018

증강현실 기술은 맥락적 인식 향상을 통한 경험학습의 기회를 제공한다는 점에서 큰 교육적 잠재력을 갖고 있다. 그러나 선행 연구 분석이 해외 연구에 제한되어있으므로 후속 연구 활성화와 방향제시를 위해 국내 현황 파악이 절실하다. 본 연구는 증강현실 기술을 활용한 국내 교육 연구 동향을 파악하고자 체계적 문헌고찰을 수행하고 그 결과를 해외 동향과 비교하였다. 또한, 콘텐츠 유형을 검토하고 맥락적 학습을 위한 활용에 대해 분석하였다. 분석 결과, 해외 연구는 초 중 고 대학생 연구가 큰 비중을 차지한 반면, 국내에서는 초 중 고등학생과 영유아 대상 연구가 활발히 수행되었다. 과학/수학, 인문예술, 특수교육 분야에서 주로 연구가 발표되었다. 교육적 효과로는 개인 학습과 동기 및 태도에 대한 연구가 주를 이루었고, 해외 동향과 비교해 협력학습과 맥락적 학습에 관한 연구는 저조한 것으로 드러났다. 더불어 사물조작형 콘텐츠를 주로 사용하고 즉각적 실재감 증대와 가상 상황 제시를 증강현실 기술 활용의 주요 목표로 하는 경향이 있었다. 끝으로, 증강현실 기술의 효과적인 교육적 적용을 위해 향후 연구방향을 도출하였다.

• 한국조사연구학회:학술대회논문집
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• 한국조사연구학회 2001년도 춘계학술대회
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• pp.153-165
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• 2001

본 논문은 계통표집법의 장점 중 거의 주목되지 못하고 있는 한 가지 장점을 다룬다. 특정한 확률표집법에 의해 표본이 추출되었을 때 추출된 표본이 모집단을 잘 반영하고 있는지의 여부는 매우 중요한 문제이다. 따라서 표집법을 평가할 때 모집단을 잘 대표하지 못하는 바람직하지 않은 표본이 추출될 가능성을 살피는 것이 필요하다. 모의실험을 통해 모집단이 순서모집단에 가까울수록 계통표집법은 무작위표집법에 비해 바람직하지 못한 표본을 추출할 확률을 적게 하는 표집법이라는 사실을 보인다.

• 한국조사연구학회지:조사연구
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• 제2권2호
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• pp.153-165
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• 2001

본 논문은 계통표집법의 장점 중 거의 주목되지 못하고 있는 한 가지 장점을 다룬다. 특정한 확률표집법에 의해 표본이 추출되었을 때 추출된 표본이 모집단을 잘 반영하고 있는지의 여부는 매우 중요한 문제이다. 따라서 표집법을 평가할 때 모집단을 잘 대표하지 못하는 바람직하지 않은 표본이 추출될 가능성을 살피는 것이 필요하다. 모의실험을 통해 모집단이 순서모집단에 가까울수록 계통표집법은 무작위표집법에 비해 바람직하지 못한 표본을 추출할 확률을 적게 하는 표집법이라는 사실을 보인다.

• 산업경영시스템학회지
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• 제2권2호
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• pp.115-124
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• 1979

The purpose of this study is theoretical research on risk. The research is focused on systematic risk. Chapter I is objective of this study, Chapter II includes definition and measurement of risk. Chapter III introduces attitudes toward risk and classification of risk. Chapter IV discusses Portfolio theory, Capital market line and Shape and Lintner model The objective of firm is assumed to maximize its value. In a world of uncertainty, value is not determined by earnings alone, the degree of risk involved with the streams of earnings. Financial manager has to consider the risk in order to maximize the value of firm. Total risk can be classifier into two parts : Systematicrisk and unststematic risk by Sharpe. Systematic risk is important because investors can't diversify it. Blume and Jensen measured f and they testified that the f is stationary over the time For further study, Korean stock mark has to take emperical study about $\beta$ and its stationarity.

• Asia Marketing Journal
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• 제16권4호
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• pp.59-73
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• 2015

Previous research has revealed that people feel past target events are more distant when they recall more intervening events, event markers, that are both accessible in memory and perceived to be related to that target event (Zauberman, Levav, Diehl, and Bhargave 2010). This phenomenon was called the systematic effect of event markers (SEEM). In this research, we explore the moderating effect of the valence of the target event on SEEM and suggest the difficulty of recalling event markers as the possible mechanism. Study 1 shows that SEEM mainly occur when the valence of the target event is negative rather than positive. Study 2 showed that even though people have more difficulty recalling four event markers than one regardless of event valence, the difficulty of recalling event markers only mediates SEEM when the target event valence is negative. Furthermore, when the target event is positive, SEEM does not exist, confirming that the mediating role of the difficulty of recalling event markers on SEEM is moderated by the valence of the target event.

• 대한안전경영과학회지
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• 제15권4호
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• pp.161-169
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• 2013

Due to the recent advances in technology, the systems are becoming more demanding in terms of functionality and implementation complexity. Therefore, when system failures are involved in such complex systems, the effects of the related safety issues can also be more serious, thereby causing in the worst case irrecoverable hazards on both human being and properties. This fact can be witnessed in the recent rail systems accidents. In general, the accidents can be attributed to the systematic failure or the random failure. The latter is due to the aging or unsatisfied quality of the parts used in implementation or some unexpected external cause that would otherwise result in accidents whereas the former is usually related to incomplete systems design. As the systems are becoming more complex, so are the systematic failures. The objective of the paper is to study an approach to solving the systematic failure. To do so, at first the system design process is augmented by the functional safety activities that are suggested in the standard IEC 61508. Analyzing the artifacts of the integrated process yields the traceability, which satisfies the requirements for reduction of systematic failure as provided in ISO 26262. In order to reduce systematic failure, the results are utilized in the conceptual design stage of systems development in which systems requirements are generated and functional architecture is developed.

• Nutrition Research and Practice
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• 제17권2호
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• pp.175-191
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• 2023

BACKGROUND/OBJECTIVES: The scientific evidence of a sodium-obesity association is limited by sodium intake assessments. Our specific aim is to synthesize the association between dietary sodium intake and obesity across the sodium intake assessments as evidenced by systematic reviews in adults. SUBJECTS/METHODS: A systematic search identified systematic reviews comparing the association of dietary sodium intakes with obesity-related outcomes such as body mass index (BMI), body weight, waist circumference, and risk of (abdominal) obesity. We searched PubMed on October 24, 2022. To assess the Risk of Bias in Systematic Reviews (ROBIS), we employed the ROBIS tool. RESULTS: This review included 3 systematic reviews, consisting of 39 unique observational studies (35 cross-sectional studies and 4 longitudinal studies) and 15 randomized controlled trials (RCTs). We found consistently positive associations between dietary sodium intake and obesity-related outcomes in cross-sectional studies. Studies that used 24-h urine collection indicated a greater BMI for those with higher sodium intake (mean difference = 2.27 kg/m²; 95% confidence interval [CI], 1.59-2.51; P < 0.001; I² = 77%) compared to studies that used spot urine (mean difference = 1.34 kg/m²; 95% CI, 1.13-1.55; P < 0.001; I² = 95%) and dietary methods (mean difference = 0.85 kg/m²; 95% CI, 0.1-1.51; P < 0.05; I² = 95%). CONCLUSIONS: Quantitative synthesis of the systematic reviews has shown that cross-sectional associations between dietary sodium intake and obesity outcomes were substantially different across the sodium intake assessments. We need more high-quality prospective cohort studies and RCTs using 24-h urine collection to examine the causal effects of sodium intake on obesity.

• 한국의류산업학회지
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• 제11권5호
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• pp.709-719
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• 2009

Since the beginning of time people had been using color to mark territory and decorate their surroundings. Color was taken for granted today as an intrinsic part of every waking moment. In modern age, color education was very important curriculum of art and design. In general, color expressed by hue, value and chroma but used the tone on the design spot, therefore the tone concept education was very important to color education. In this study I planned the usable "Systematic Color Coordinate System 180" for general color education on hue and tone color system and manufactured the color papers, color chart and color code based on the system. "Systematic Color Coordinate System 180" was attached the Munsell notation and common color names which could reappear the colors when needed.

• 한국정밀공학회지
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• 제21권10호
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• pp.50-56
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• 2004

Finishing is the final process in molds manufacturing and consumes much process time. Also, it influences on surface quality of molds. But, there are few systematic methods to control the process. In this work, basic experiments were carried out to study the machining characteristics of the finishing tools. From the experiments, critical surface roughness and wear coefficient are suggested to reduce the number of finishing steps and to plan a systematic finishing procedure. Comparison experiments were carried out between the expert's method and the new method, which is based on the results of this research. From the experiments, it is verified that the systematic method takes less time and generates less form error in the machined surface than the worker's method.

• Journal of Hospice and Palliative Care
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• 제27권1호
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• pp.21-30
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• 2024

Purpose: The purpose of this systematic review is to explore end-of-life (EOL) care planning and the impact of socioeconomic status (SES) among people who identify as Black or African American. Methods: The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) were used to guide and inform this systematic review process. The following academic electronic databases with publications that reflected the interdisciplinary fields related to the research objective were searched: APA PsycINFO, CINHAL, PubMed, Scopus, and Social Work Abstracts. Results: After the authors conducted the search, 14 articles (from 13 studies) ultimately met the criteria for inclusion. The results substantiated significant concerns highlighted in previous literature regarding SES and its relation to EOL planning, but also revealed an absence of original work and interventions to increase engagement in EOL planning among Black and African American populations. Conclusion: Black individuals deserve an equitable EOL experience. Researchers, practitioners, and policymakers need to move towards advocacy and action to meet this important need.