• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.253-256
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• 2009

This paper describes a vertical search system based on multiple entity-centric unification, which enables to deal with the search queries including multiple domains. To implement the system, we introduced two search technologies; one is for merging service components dynamically according to the entities in the search keywords, and the other is for searching fields with appropriate entities. Our current system includes about 453,000 overseas journal papers for article information search and two entity types; research topic and researcher.

• Knowledge Management Research
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• v.19 no.2
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• pp.47-68
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• 2018

Business environment is shifting from industrial economy to knowledge based economy. Enterprises go through numerous trials for successful management in changing environment. Along with trial tests, research area has been growing simultaneously. Unlike initial research which focused on basic concepts such as: form of business model and success points. Current research emphasizes on actualization of business that enterprises plan, which brought academic research with perplex form of knowledge structure. On the other hand, there is limitation in understanding business model systematically due to preceding research primarily centered on analyzing definition and case study. In order to analyze knowledge structure, this study utilized social network analysis based on "relationship". For the analysis, 13,412 keywords were extracted from 36years worth of article or research related to business model stored in SCOPUS database. From the analysis, it was shown core research subject was INNOVATION and the number of co-authors has increased due to the academic diversity. Business model research is divided into five sub-categories (E-commerce, SMEs, sustainability, open-source, and e-book). Through cognitive map analysis on each of research characteristics of sub-category, it has shown that E-commerce, SMEs, sustainability, and open-source are core categories.

• Journal of the Korean Society for information Management
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• v.31 no.3
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• pp.293-311
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• 2014

This study explored the research trends on Twitter in Korea by informetric methods. All 539 articles on Twitter published from 2009 to the April of 2014 were obtained from the KCI. Only article titles, abstracts, and keywords by authors were used in analysis. Academic journals in many different disciplines where Twitter articles were produced were analysed by profiling, and then, the subject areas of researches on Twitter were analysed by co-word analysis. The results of this study showed that Twitter-related papers were published in as many as 53 disciplines with journalism, business administration, and computer science to be core fields. It was also found that the core subject areas are political issues and business.

• Safety and Health at Work
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• v.11 no.3
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• pp.249-261
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• 2020

Background: Hearing loss is one of the most prevalent worker health conditions worldwide. Although the effect of noise exposure on hearing is well researched, other workplace exposures may account for significant hearing loss. The aim of this review was to determine whether occupational hand-arm vibration exposure through use of power or pneumatic tools, independent of noise exposure, is associated with permanent hearing loss. Do workers suffer from hand-arm vibratione-induced hearing loss? Methods: Peer-reviewed articles published in English between 1981 and 2020 were identified through five online databases with five search keywords. Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines, including online database search methodology, study selection, article exclusion, and assessment of potential study design confounders and biases, were followed. Results: Database searches retrieved 697 articles. Fifteen articles that reported 17 studies met the criteria for review. All but two studies revealed statistically significant associations between occupational exposure to hand-arm vibration and hearing loss. The majority of the study results revealed associations between hand-arm vibration and hearing loss, independent of potential age and noise confounders. Conclusion: Few studies have examined the association between occupational exposure to hand-arm vibration and hearing loss. Dose response data were limited as only one study measured vibration intensity and duration. Although the majority of studies identified statistically significant associations, causal relationships could not be determined. Further research using standardized and uniform measurement protocols is needed to confirm whether the association between occupational exposure to hand-arm vibration and permanent hearing loss is causal and the mechanism(s).

• Imaging Science in Dentistry
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• v.46 no.3
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• pp.147-157
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• 2016

This review article aimed to introduce a category of jaw lesions associated with impacted tooth. General search engines and specialized databases such as Google Scholar, PubMed, PubMed Central, MedLine Plus, Science Direct, Scopus, and well-recognized textbooks were used to find relevant studies using keywords such as "jaw lesion", "jaw disease", "impacted tooth", and "unerupted tooth". More than 250 articles were found, of which approximately 80 were broadly relevant to the topic. We ultimately included 47 articles that were closely related to the topic of interest. When the relevant data were compiled, the following 10 lesions were identified as having a relationship with impacted tooth: dentigerous cysts, calcifying odontogenic cysts, unicystic (mural) ameloblastomas, ameloblastomas, ameloblastic fibromas, adenomatoid odontogenic tumors, keratocystic odontogenic tumors, calcifying epithelial odontogenic tumors, ameloblastic fibro-odontomas, and odontomas. When clinicians encounter a lesion associated with an impacted tooth, they should first consider these entities in the differential diagnosis. This will help dental practitioners make more accurate diagnoses and develop better treatment plans based on patients' radiographs.

• Journal of Oriental Neuropsychiatry
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• v.24 no.spc1
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• pp.89-100
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• 2013

Objectives : The purpose of this study is to investigate the researches about regarding Emotional Freedom Technique (EFT) and to understand the trends of Meridian-based Psychotherapy. Methods : Every article relevant to EFT was obtained from 'Pubmed' and Korean journal databases. Keywords used for searching included 'EFT' and 'Emotional freedom technique'. Results : 1) 5 reviews, 11 randomized controlled trials, 3 controlled trials, 1 single group comparative study and 4 case studies were searched. 2) Anxiety disorders were most frequently studied with EFT. Other studies included insomnia, depression and pain symptoms. EFT interventions were attempted in many different protocols and assessed with various tools. 3) Review articles indicated that meridian-based psychotherapies, such as EFT, are based on the meridian theory of oriental medicine. They evaluate EFT positively for its effectiveness on psychiatric diseases. Conclusions : EFT is increasingly studied and used in clinical practice of various fields. Objective evaluation tools and standardized intervention protocols are needed for the development of a new guideline for EFT.

• Korean Journal of Acupuncture
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• v.30 no.1
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• pp.16-20
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• 2013

Objectives : The objective of this study is to report the efficacy of acupuncture and moxibustion for the treatment of fetal breech presentation. Methods : We searched papers in PubMed, using the keywords "breech and moxibustion" and "breech and acupuncture". Search range includes randomized clinical trials(RCTs), controlled clinical trials(CCTs), case reports, and case series. Each original article must have an abstract in English. Finally, 7 RCTs from 102 were included in this review. Results : As a result of analyzing the 7 RCTs, five trials hold that moxibustion or acupuncture at BL67 has been shown to produce a positive effect for the correction of breech presentation and the other two trials indicated no beneficial effect. However, one of the latter could not come to a conclusion owing to the unsatisfactory compliance record of the participants. Conclusions : Acupuncture and moxibustion may be effective to correct fetal breech presentation. In this regard, the related clinical researches are worth to be conducted.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.597-599
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• 2009

We have developed new type of LCD Device which enables switching from reflective to tranmissive LCD mode and vice versa according to brightness of the surrounding. Alternation in these modes are possible by adding on circular polarized sheet and retardation film onto the bottom polarizer which allows the control of the back light and the LCD cell gamma voltage depending on the atmosphere. This method has been evaluated and confirmed by running on the LCD module device in which we have optimized retardation value by Poincare polarizer analysis.

• Journal of Digital Convergence
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• v.12 no.10
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• pp.265-270
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• 2014

Existing speech recognition algorithm have a problem with not distinguish the order of vocabulary, and the voice detection is not the accurate of noise in accordance with recognized environmental changes, and retrieval system, mismatches to user's request are problems because of the various meanings of keywords. In this article, we proposed to event based semantic ontology inference model, and proposed system have a model to extract the speech recognition feature extract using ERB filter. The proposed model was used to evaluate the performance of the train station, train noise. Noise environment of the SNR-10dB, -5dB in the signal was performed to remove the noise. Distortion measure results confirmed the improved performance of 2.17dB, 1.31dB.

• Journal of the Korean Institute of Educational Facilities
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• v.26 no.6
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• pp.3-17
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• 2019

During adolescence, youths may experience many unexpected changes due to sudden variances. At that time, youths were found to show rebellious or abnormal behaviors due to psychological wounds. These are often caused by psychological wounds oriented at home or at school, which may make some problems in adolescents' self-respect and attachment. In this study, we plan to conduct an analysis of the case of the interior therapy of educational facilities through TBRI (Trust-Based Relational Intervention) to discover how psychological therapy for youths is applied to an interior environment. The cases analysis are conducted based on the three principles of TBRI and the twenty seven detailed keywords within each principle. The research method is oriented on the research of literature focusing on TBRI-related external studies and domestic/external studies of interior therapy. The ranges of the case study are studied in six educational facilities retrieved and extracted from the website 'Archdaily' and from the 2019 Journal of the Korean Institute of Educational Facilities. The research article are concluded that TBRI's principles were applied to shape, finish material, color, lighting, furniture layout, plan layout, sculpture, and built-in-furniture by analyzing the interior therapy of educational facilities according to the elements of TBRI.