• Title/Summary/Keyword: Studies

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Electrical Power System Studies for an Industrial Cogeneration Power Plant (자가발전설비가 있는 산업플랜트의 전력계통 응동 해석)

  • Yun, Jae-Hun;Lim, Seong-Ho
    • Proceedings of the KIEE Conference
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    • 1999.07c
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    • pp.1215-1217
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    • 1999
  • Electrical studies are required to assure the proper integration of cogeneration facility into a industrial plant electrical system and the connected utility grid. Details of such study efforts are presented, including boundary limit for the system modeling, short-circuit and load flow studies, stability studies, load shedding studies, and harmonics studies.

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Networked Keynesian Cradle: How MOT Carrier Make a Voyage Over the "Darwinian Sea" \ulcorner; Innovation and Core-competence in e-commerce

  • Fukuta, Takanari;Suzaki, Kazuomi;Fujita, Yasunori;Sugino, Nobora;Ito, Ken
    • Proceedings of the CALSEC Conference
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    • 2004.02a
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    • pp.98-103
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    • 2004
  • 1. Changing Business Environment; Before and After IT Revolution 2. Network as a Public Innovation; its Possibility and Fundamental Problem 3. e-Aircraft Career System; Reconstruction of 'Keynesian Cradle' from the viewpoint of MOT 4. Short Conclusion: For Plentiful Future of e-Biz Circumstances(omitted)

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Postcolonial Criticism and Southeast Asian Studies: Pitfalls, Retreat, and Unfulfilled Promises

  • Curaming, Rommel A.
    • SUVANNABHUMI
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    • v.7 no.2
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    • pp.3-25
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    • 2015
  • This paper reflects on the relationship between postcolonial criticism (PC) and Southeast Asian Studies. The emphasis is on the apparent premature retreat from PC as well as its unfulfilled promises and persistent pitfalls. I argue that it is premature to abandon PC because it remains relevant, even essential, in the context of the much ballyhooed age of "knowledge economy" or "information society." There is a need to take another look at its promises and to work towards fulfilling them, but at the same time be conscious of its persistent problems.

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No Association between Egg Intake and Prostate Cancer Risk: A Meta-analysis

  • Xie, Bo;He, Huadong
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.9
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    • pp.4677-4681
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    • 2012
  • Objective: Egg consumption has been suggested to increase the risk of colorectal and some other cancers. The present study summarized and quantified the current evidence relating dietary intake of eggs and prostate cancer. Materials and methods: Literature searches were conducted to identify peer-reviewed manuscripts published up to July 2012. Twenty manuscripts from nine cohort studies and 11 case-control studies were identified. Summary risk estimates with 95% confidence intervals (CIs) were calculated for case-control and cohort studies separately. Results: Neither the case-control not the cohort studies showed any association of prostate cancer incidence with egg consumption (case-control studies: odds ratio 1.09, 95% CI 0.86-1.31; cohort studies: relative risk 0.97, 95% CI 0.97-1.07). The results were consistent in subgroup analysis. Furthermore, no association was observed between egg consumption and prostate cancer-specific mortality. Conclusions: Our analyses provided no evidence of a significant influence of egg consumption on prostate cancer incidence and mortality. However, more studies, particularly large prospective studies, are needed.

Assessment of Children's Story Comprehension : A Review of Research (유아의 이야기 이해에 관한 연구들에 대한 고찰)

  • Chae, Jong Ok
    • Korean Journal of Child Studies
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    • v.22 no.1
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    • pp.227-240
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    • 2001
  • This review examined trends in research on the assessment of Korean children's story comprehension. Specific areas that were analyzed included types of questions asked in the assessment and variables treated as relevant to the assessment of story comprehension. Literal, inferential, and critical questions were identified. Among the 33 studies reviewed, 20 used all 3 types of questions, the other 13 used only literal questions. The studies using only literal questions interpreted comprehension of a story as "comprehension of letters and/or components of a story." The other studies interpreted it as "comprehension of implied meaning of a story." Other relevant variables were "teaching strategies" (29 studies) and "structural components" (4 studies). None of the studies treated "children's internal variables related to story comprehension."

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근거 중심 치의학 - 2. 근거 수준과 비판적 평가

  • Hong, Soon-Min
    • The Journal of the Korean dental association
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    • v.45 no.3 s.454
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    • pp.169-181
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    • 2007
  • In this second part of series report on evidence-based dentistry, the level of evidence and the methods for critical appraisal are discussed. The epidemiologic studies, namely clinical studies have some bias per se, and the degree of bias is somewhat predetermined by the study design. The level of evidence can be defined as the reliability of the clinical study and it is dependent on the degree of bias. Thus, it is important to determine the type of the study and to understand its structure before critically appraising them. Systematic reviews of primary studies, randomized controlled trials, nonrandomized clinical trials, cohort studies, case-control studies, and case reports / series constitute the clinical studies and the level of evidence follows the order of the studies listed above. Critical appraisal is the most important procedure in evidence-based dentistry. It is done to determine the credibility of research papers and their usefulness in the clinician s own practice. Critical appraisal is consisted of multiple questions that are helpful for evaluating validity and usefulness of the studies concerning therapy, diagnosis, prognosis, and causation.

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An Attempt for Constructing a New Paradigm of Home Economics - Ecological Approach and An Integrative Model - (가정학의 새로운 패러다임 구축을 위한 시론 II-통합적 모형)

  • Yoo Young-Ju;Sohn Jung-Young
    • Journal of the Korean Home Economics Association
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    • v.37 no.12 s.142
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    • pp.179-192
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    • 1999
  • Thesedays, Home Economic in Korea is faced with the danger of a discord caused by the outer pressure of reorganization in the process educational reformation. The first purpose of this study was to examine the characteristics of the informatized society and the changes of families lived in the informatized society. The second was to assert to strengthen Home Economics in the informatized society. Ultimately we suggested an integrative and interdisciplinary model about Home Economics from the ecological and informative perspective. This model consist with three parts: Human development(Child studies, Gerontology, & Adolescent studies) and family studies division(Family relation studies, family resource management studies, & Consumer studies) Environmental division(Clothing and Textiles, Food and Nutrition, & Housing) and HEIS(Home Economics Information System). This classification is correspond with the one Human-Behavioral Environment and Human-Constructed Environment of Ecological theory.

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The Systematization of Environmental Education in Socal Studies Curriculum (사회과에서의 환경교육 체계화와 강화 방안)

  • 이동엽;김정호
    • Hwankyungkyoyuk
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    • v.12 no.1
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    • pp.76-98
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    • 1999
  • As an attempt to systematize the environmental education in schools according to the 7th curriculum, this study extracted the contents of environmental education to which Social Studies Education can approach in the social studies lessons. This study analyzed these contents from the goals of environmental education and from its contents and, as a result, it found out the following: (1) in the aspect of ‘knowledge’ and ‘skills’, Social Studies and the goals of environmental education have direct relations with each other, and (2) Social Studies can be taught in the aspect of ‘environmental pollution’, ‘environmental preservation & alternative’ ,‘human environment’, ‘population’, ‘inderstrialization & urbanization, ‘resources’, and so on. By utilizing various teaching and learning methods of Socal studies education, We can approach the goals of environmental education: ‘attitudes’ and ‘participation’. We think that ‘problem solving ability’ is main teaching method” in Socal Studies.

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Secondary Analysis: Focusing on Qualitative Research (이차분석 : 질적연구를 중심으로)

  • 이명선
    • Journal of Korean Academy of Nursing
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    • v.34 no.1
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    • pp.35-44
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    • 2004
  • Purpose: This article explored issues arising from secondary analysis of qualitative data and analyzed the results of qualitative secondary analysis studies published in English, focusing on the methodological aspects. Method: A total of 29 studies were identified as qualitative secondary analysis studies, retrieving from the CINAHL database from 1982 to 3rd week of April 2003. These studies were analyzed by publication year, research method, and type of approach to secondary analysis. Result: The year that the qualitative secondary analysis study first published was 1992 and the number of the studies using secondary analysis has increased after the middle of 1990s. Grounded theory was the one the most frequently used(n=11, 37.9%) and phenomenological study the second most(n=6, 20.7%). In terms of types of approach, fifteen studies(51.7%) focused on the specific concepts that were not explored in the primary studies. Nine(31.0%) focused on the specific types of participants. Six were aimed to integrate contexts or perspectives to generate more general and abstract analysis of qualitative data. Conclusion: The results of this article will stimulate methodological discussion of qualitative secondary analysis and activate qualitative studies using secondary analysis.

Statistical Issues in Genomic Cohort Studies (유전체 코호트 연구의 주요 통계학적 과제)

  • Park, So-Hee
    • Journal of Preventive Medicine and Public Health
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    • v.40 no.2
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    • pp.108-113
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    • 2007
  • When conducting large-scale cohort studies, numerous statistical issues arise from the range of study design, data collection, data analysis and interpretation. In genomic cohort studies, these statistical problems become more complicated, which need to be carefully dealt with. Rapid technical advances in genomic studies produce enormous amount of data to be analyzed and traditional statistical methods are no longer sufficient to handle these data. In this paper, we reviewed several important statistical issues that occur frequently in large-scale genomic cohort studies, including measurement error and its relevant correction methods, cost-efficient design strategy for main cohort and validation studies, inflated Type I error, gene-gene and gene-environment interaction and time-varying hazard ratios. It is very important to employ appropriate statistical methods in order to make the best use of valuable cohort data and produce valid and reliable study results.