• 문화기술의 융합
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• 제10권1호
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• pp.159-164
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• 2024

국내 석유 시장은 국제 석유 가격의 변동에 매우 민감하기 때문에 그 변동성에 대한 파악과 대처가 중요하다. 특히, 높은 소비량을 보이는 휘발유의 가격이 어떠한 요인에 인해 변화하는지 명확하게 파악하는 것이 필요하다. 국제 휘발유 가격은 휘발유 수급, 지정학적 사건, 미국 달러화 가치 변동 등 글로벌 요인에 영향을 받는다. 그러나 기존의 연구들은 휘발유의 수급에만 초점에 맞추어 진행하였다는 한계가 존재한다. 본 연구에서는 다양한 머신러닝 기반의 회귀 모델을 활용하여 거시적 경제지표와 국제 휘발유 가격 간의 인과관계를 탐색한다. 첫째, 다양한 세계 경제지표 데이터를 수집한다. 둘째, 데이터 전처리를 진행한다. 셋째, 다중선형회귀, Ridge 회귀, Lasso(Least Absolute Shrinkage and Selection Operator) 회귀 모델을 활용하여 모델링한다. 실험 결과, 테스트 데이터 셋에서 다중선형회귀 모델이 가장 높은 정확도(97.3%)를 보였다. 우리는 국제 휘발유 가격의 예측은 국내 경제 안정성과 에너지 정책 결정에 도움이 될 수 있을 것으로 기대한다.

• 한국식생활문화학회지
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• 제32권3호
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• pp.235-243
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• 2017

We investigated the antioxidant, physicochemical, and sensory characteristics of dried type sodium-reduced Bibimbap using dandelion complex powder (DCP). DCP is known to add moisture to the skin and relieve symptoms of atopic dermatitis. The sodium content of the standard sample was 1,110.87 mg per serving. The sodium was significantly reduced by 30%, resulting in 762.62 mg of sodium for the reduced sodium group (p<0.05). The ash contents of the standard sample group with DCP showed the highest value (3.17%) in all samples and was affected by minerals of DCP (p<0.05). The total flavonoid contents and ABTS radical scavenging activity, indicators of antioxidant, anticancer and antibacterial activities, showed significantly high activities with addition of DCP (p<0.05). In the sensory results, bulgogi and savory flavor of the samples with DCP showed significantly higher values, and samples with DCP received the highest scores for after-taste. All samples were confirmed to be microbiologically safe according to the food code applied to food manufacturers. Pathogenic microorganisms tests were either negative or not detected in all samples.

• 대한간호학회지
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• 제49권5호
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• pp.613-630
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• 2019

Purpose: This study aimed to develop a scale measuring the Patient-Centered Nursing Culture (PCNC) and provide a basic tool to improve PCNC in Korea. Methods: A conceptual framework and construct factors were extracted through extensive literature review and in-depth interviews with nursing professionals. In total, 59 items were derived based on the pilot survey. Data were collected from 357 nurses working at general hospitals and analyzed for verifying the reliability and validity of the scale. Results: Nine factors containing 54 items were extracted from the exploratory factor analysis to verify the construct validity. The nine factors were top management leadership, policy and procedure, education and training, middle management leadership, supportive teamwork, nursing workplace environment, professional competence, patient-centered nursing activity, and nurses' values. These items were verified by convergent, discriminant, and concurrent validity testing. The internal consistency reliability was acceptable (Cronbach's ${\alpha}=.96$). Conclusion: The developed PCNC scale is expected to be used as the tool for the development of theory and improvement of PCNC, the empirical testing for cause and effect of PCNC, the development of interventions, education and training programs for improving PCNC, and indicators for evaluation or accreditation of hospital service quality.

• 정보관리연구
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• 제38권4호
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• pp.88-118
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• 2007

본 연구의 목적은 지방정부에서 제공하는 문화관광정보 웹사이트가 콘텐트와 서비스적인 면에서 충실하지 못하므로 지역문화관광 웹사이트의 분석을 통해 문제점을 분석하고 개선 방안을 모색하는 것이다. 연구의 방법은 지역문화관광 웹사이트를 분석 및 평가하기에 적합한 요인들을 도출한 한국관광공사 지자체 관광분야 홈페이지 평가지표인 콘텐트 평가, 사용성 평가, 디자인 평가, 상호작용성 평가의 4개 항목을 근거로 분석을 실시하였다. 연구결과 지역문화관광 웹사이트의 가장 큰 문제점은 사용자중심의 콘텐트와 서비스가 부족하다는 것이었다. 따라서 자유로운 관광경로 설정, 예약시스템의 보완, 다양한 검색 기능의 강화 등 지역문화관광 웹사이트는 사용자의 요구를 반영한 맞춤형 정보를 제공하여야 한다.

• 한국도서관정보학회지
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• 제48권3호
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• pp.177-205
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• 2017

본 연구에서는 도서관의 문화적 가치를 평가할 수 있는 평가지표를 개발하고자 하였다. 이를 위해 1차적으로 도서관의 가치에 대해 연구한 국내외 논문들을 총체적으로 수집 및 분석하여 예비 평가지표를 도출하였다. 도출한 예비 평가지표는 10명의 전문가를 선정하여 3차에 걸친 델파이 조사를 실시하였으며, 이를 통해 최종 평가지표를 개발하였다. 최종 평가지표는 지역문화발전, 문화유산 계승 및 홍보, 지역주민의 문화향유에 기여, 지역공동체문화형성 등의 4가지 평가영역, 10개 평가항목, 50개의 세부평가지표로 구성된다.

• 치위생과학회지
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• 제19권2호
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• pp.86-95
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• 2019

The modern era of microbial genome analysis began in earnest in the 2000s with the generalization of metagenomics and gene sequencing techniques. Studying complex microbial community such as oral cavity and colon by a pure culture is considerably ineffective in terms of cost and time. Therefore, various techniques for genomic analysis have been developed to overcome the limitation of the culture method and to explore microbial communities existing in the natural environment at the gene level. Among these, DNA fingerprinting analysis and microarray chip have been used extensively; however, the most recent method of analysis is metagenomics. The study summarily examined the overview of metagenomics analysis techniques, as well as domestic and foreign studies on disease genomics and cluster analysis related to oral metagenome. The composition of oral bacteria also varies across different individuals, and it would become possible to analyze what change occurs in the human body depending on the activity of bacteria living in the oral cavity and what causality it has with diseases. Identification, isolation, metabolism, and presence of functional genes of microorganisms are being identified for correlation analysis based on oral microbial genome sequencing. For precise diagnosis and treatment of diseases based on microbiome, greater effort is needed for finding not only the causative microorganisms, but also indicators at gene level. Up to now, oral microbial studies have mostly involved metagenomics, but if metatranscriptomic, metaproteomic, and metabolomic approaches can be taken together for assessment of microbial genes and proteins that are expressed under specific conditions, then doing so can be more helpful for gaining comprehensive understanding.

• Journal of Microbiology and Biotechnology
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• 제31권11호
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• pp.1526-1532
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• 2021

Suaeda australis, Phragmites australis, Suaeda maritima, Suaeda glauca Bunge, and Limonium tetragonum in the Seocheon salt marsh on the west coast of the Korean Penincula were sampled in order to identify the endophytes inhabiting the roots. A total of 128 endophytic fungal isolates belonging to 31 different genera were identified using the fungal internal transcribed spacer (ITS) regions and the 5.8S ribosomal RNA gene. Fusarium, Paraconiothyrium and Alternaria were the most commonly isolated genera in the plant root samples. Various diversity indicators were used to assess the diversity of the isolated fungi. Pure cultures containing each of the 128 endophytic fungi, respectively, were tested for the plant growth-promoting abilities of the fungus on Waito-C rice germinals. The culture filtrate of the isolate Lt-1-3-3 significantly increased the growth of shoots compared to the shoots treated with the control. Lt-1-3-3 culture filtrate was analyzed and showed the presence of gibberellins (GA₁ 2.487 ng/ml, GA₃ 2.592 ng/ml, GA₉ 3.998, and GA₂₄ 6.191 ng/ml). The culture filtrate from the Lt-1-3-3 fungal isolate produced greater amounts of GA₉ and GA₂₄ than the wild-type Gibberella fujikuroi, a fungus known to produce large amounts of gibberellins. By the molecular analysis, fungal isolate Lt-1-3-3 was identified as Gibberella intermedia, with 100% similarity.

• Perspectives in Nursing Science
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• 제11권2호
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• pp.109-122
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• 2014

Purpose: The purpose of this study was to review research papers on structural equation models for hospital nurses' turnover intentions, and to identify the factors that influence these intentions. Methods: Twenty-four research papers on structural equation models for hospital nurses' turnover intentions were identified for systematic review. Results: All 24 papers assessed nurses' turnover intentions in general hospitals and university hospitals. A total of 36 indicators and 105 items were used to measure turnover intention. Turnover intention was positively related with 10 variables, and negatively with 17 variables. Organizational commitment, job satisfaction, job stress, burnout, organizational culture, and empowerment were found to have significant direct and indirect effects on nurses' turnover intentions. Structural equation models in 23 of the 24 research papers showed high compatibility with the data. The models accounted for 20.1% 68.0% of total variances. Conclusion: The study findings show recent trends in nurses' turnover intentions, and indicate directions for future research.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2002년도 춘계학술대회
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• pp.15-21
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• 2002

In the future, all kinds condition of industrial safety is a primary need in all advanced countries in which workplace safety is an issue. Furthermore, the increasing complexity of production systems and the rapidity of technological innovation have consolidated the recognition of the strategic value of safety, alongside the traditional competitive factors such as quality, costs, delivery time and flexibility, In this paper, the some critical issues of changes and counter-plan in an adequate safety management were identified by above considerations as follows： needs of systematic identification and analysis of safety factors； requirements to define priorities and budgeting to support the decision-making process; and needs of audit activities and indicators which measure company performance in terms of safety improvements, and so on.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.217-221
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• 2022

The article analyzes the main theoretical approaches to the formation of managerial competencies and establishes the degree of development of the problem. The content of the concept of "managerial competence" has been clarified, to determine the structure of managerial competencies of a future specialist in the education system and indicators of the formation of managerial competencies. The organizational and pedagogical conditions necessary for the effective process of forming the managerial competencies of future specialists are revealed. The following research methods were used in the work: theoretical (analysis of regulatory documents and scientific literature on the problem under study, comparison, generalization, modeling), empirical (diagnostics of the level of formation of managerial competencies of students of the system, questioning, observation, peer review, comparative qualitative and quantitative analysis of diagnostic results the level of formation of managerial competencies).