• Korean Journal of Plant Resources
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• v.19 no.5
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• pp.628-633
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• 2006

ITS DNA sequences from five individuals, representative of five groups designated according to the degree of leaf teeth and lobes from simple to palmate compound leaf in the Viola albida complex, established and further analysed in order to solve the taxonomic difficulty. A total 702 bp was sequenced at the 5.8S ribosomal DNA and internal transcribed spacer 1 and 2. The 5.8S coding region is 163 bp, and has no sequence variations. The ITS1 and ITS2 noncoding regions have a little bit sequence variations, and those were further analysed by the methods of the analysis of variance (ANOVA), the analysis of sequence divergence and the phylogenetic analysis. The result of ANOVA showed no significant differences among individuals investigated. The analysis of sequence divergence with Kimura 2-parameter distance revealed that in-groups showed much less than 0.05 in absolute value among individuals, while two out groups more than 0.05, V. grypoceras and V. orientalis. This result appeared that the sequence divergence among in-groups was not yet occurred in the species level but situated at somewhere below the species level. In the phylogenetic analysis, two outgroups formed the basal clades in order. Five individuals in-groups formed a clade. The clade was, however, not very robust as around 50% in bootstrap value, suggesting that this result was not meaningful in the phylogenetic point of views.

• The Journal of the Korea Contents Association
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• v.16 no.12
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• pp.102-112
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• 2016

The purposes of this study were to identify the effects of distraction strategies compared to usual pain management, and to compare the effects of passive and active distraction on pain responses of preschool children during immunization. A quasi experimental with non-equivalent control group posttest design was used. Participants for each group were 30 preschool children who visited a pediatric clinic to have influenza immunization. Children in experimental groups selected one of two distraction types. Pain responses were measured by children, parents, and researcher. Pain responses by children, parents, and researcher during immunization were significantly different between groups. Children in passive or active distraction group were more distracted than children in control group. Moreover, self-reported pain response by children($2.70{\pm}0.88$) and researcher($12.97{\pm}2.39$) in active group were higher than pain scores by children($2.27{\pm}0.64$) and researcher($10.63{\pm}1.65$) in passive group. Results of this study identified that distraction intervention is an effective method for decreasing pain responses in preschool children during immunization. Passive distraction is more effective than active distraction. Use of distraction strategies during immunization should be facilitated. Further research comparing distraction strategies by types and forms is needed.

• Journal of Navigation and Port Research
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• v.44 no.3
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• pp.244-252
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• 2020

The 2008 global financial crisis was triggered by the Lehman Brothers crisis caused by the sub-prime mortgage crisis in the United States This crisis has had an impact on the globe's dry bulk shipping market by reducing dry bulk cargo volume. An oversupply of dry bulk carriers caused a serious recession in the globe's dry-bulk shipping industry and shipbuilding industry. In this situation, the Korean dry-bulk shipping companies were victims of the quagmire of a long recession since the global financial crisis and could not overcome this crisis. This condition forced them into severe financial risk Thus, it caused many shipping companies to file for bankruptcy. In this study, we classified Korean ocean-going dry-bulk shipping companies into two groups, that is, the solvent group and the insolvent group. We also separated the research period before and after the 2008 global financial crisis. Then we investigated the differences in the major financial ratios of the two groups by t-test and found that some financial ratios such as profitability ratios and growth ratios showed the difference between the two groups with statistical significance. The significance of this study is as follow. First, the shipping company management is also crucial for the systematic management of financial strength and business strategy, it is crucial to manage cargo which a high profitable freight. Second, the shipping company should be managed as a company with continued growth through efficient operation and management of ships.

• (The)Study of the Eastern Classic
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• no.73
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• pp.35-63
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• 2018

The intellectuals of the Joseon Dynasty were Yangban Sadaebu who had knowledge based on Confucianism(Neo-Confucianism), enjoyed cultural powers by expressing their knowledge in words or writing, and entered government posts to guide society with such knowledge or included some pre-officials. Sisa(Poem Society) was a major place of knowledge transmission to acquire and impart knowledge of creating Chinese poems that traditional intellectuals of the Joseon Dynasty possessed. Seocheonmaehwasa(西泉梅花社) was a group of writers from the late Joseon Dynasty gathered together based on the commonality of kinship and political iniquity although they were different factions like Nam'in and Soron, and they enjoyed apricot blossoms and wrote poems there. Seocheonmaehwasa(西泉梅花社) was basically the meeting making poems. They improved their creative abilities with creating poems. Seocheonmaehwasa(西泉梅花社) was a major place of knowledge transmission to acquire and impart knowledge of creating Chinese poems that traditional intellectuals of the Joseon Dynasty possessed.

• Korean Journal of Plant Taxonomy
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• v.35 no.1
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• pp.57-80
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• 2005

Morphological variation of Quercus L. subgen. Quercus in Korea was examined by numerical methods including principal components analysis of major morphological characters. Principal components analysis revealed the presence of five major species groups of the subgen. Quercus in Korea; these include 1) a group consisiting of Q. acutissima and Q. variabilis individuals, 2) Q. dentata, 3) Q. aliena, 4) Q. mongolica, and 5) Q. serrata. The putative interspecific hybrid individuals occupied intermediate position between the putative parent species in the PCA plot. The analysis also strongly suggested that size and shape of leaf blade and teeth or lobes, twig diameter, size and shape of nuts, and length and width of scales are very useful in distinguishing the species and the putative hybrids of the subgen. Quercus.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.47 no.6
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• pp.107-116
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• 2010

Smear is a phenomenon that occurs when an extremely strong light source appears in the imaging system with CCD sensor. It occurs due to the signal charge transfer of CCD and appears as bright lines of noise emanating vertically (or horizontally) from the light source. For still images, smear can be reduced by using a mechanical shutter or special drive methods, but these techniques cannot be applied to image sequences. In this paper, we propose a smear removal method that can be applied to imaging systems for not only still images but also image sequences. The proposed method uses the optical black region(OBR) which is a group of pixels located in the boundary of CCD imaging sensors. Although the OBR is not exposed to light, it contains smear information caused by the charge transport. First, noise and the smear signal in the OBR is separated, and noise is removed to correctly estimate smear effect. Then, corrected OBR signal is uniformly subtracted to eliminate smear effect. Also, if saturation is occurred, the current pixel is substituted by weighted summation of neighboring pixels to improve the visual degradation. Experimental results show that the proposed algorithm outperforms the conventional methods.

• Korean Journal of Biological Psychiatry
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• v.8 no.1
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• pp.20-36
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• 2001

The debate about whether depressive disorders should be divided into categories or arrayed along a continuum has gone for decade, without resolution. In our review, there is more evidence consistent with the spectrum concept than there is with the idea that depressive disorders constitute discrete clusters marked by relatively discontinuous boundaries. First, "depression spectrum", "is there a common genetic factors in bipolar and unipolar affective disorder", "threshold model of depression" and "bipolar spectrum disorder" are reviewed. And, a new subtype of depression is so called SeCA depression that is a stressor-precipitated, cortisol-induced, serotonin-related, anxiety/aggression-driven depression. SeCA depression is discussed. But, there is with the idea that depressive disorders constitute discrete subtypes marked by relatively discontinuous boundaries. This subtypes of depressive disorder were reviewed from a variety of theoretical frames of reference. The following issues are discussed ; Dexamethasone suppression test(DST), TRH stimulation test, MHPG, Temperament Character Inventory(TCI), and heart rate variability(HRV).

• Journal of the Korean association of regional geographers
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• v.12 no.5
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• pp.540-556
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• 2006

The purpose of this paper is to analyze a process of formation of an ethnic community in the global era, taking an example of foreign workers in Igok-Dong, Dalseo-gu, Taegu. Previous studies suggest that playing a role as a hub of culture, resources and ethnic networks an ethnic community becomes an imagined space where its members can feel "us". Through this imagined space, ethnic people communicate and exchange information with each other and establish transnational linkages between their origin and destination countries or the third countries. In my research in Igok-Dong it was observed that ethnic shops had become the centers of the community of foreign workers and helped them connect with their own ethnic people from wider areas than their residence. Partly because of such networks exclusively focused on their own ethnics, there was little connection developed between foreign workers and locals. A social distance between the two parties may turn into antagonism as the ethnic community grows in number. Since it is foreseen that demands for foreign workers will continue to rise in Igok-Dong it is necessary to seek ways to achieve a more inclusive and harmonious multi-ethnic society for both foreign workers and locals.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.32-42
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• 2013

As the smartphone market grows, the needs for its new business model are also increased. However, most previous researches on smartphone applications focused on Technology Acceptance Model(TAM) and Rogers' Diffusion of Innovation Theory so that there was lack of researches on characteristics for actual smartphone users. In this research, we divided the smartphone applications into five category functions (Call & Text/Music & Video/Information Search/Game/Social Network Service (SNS)). We analyzed characteristic differences of users who used the each application category and found that the differences were statistically significant in both demographic and smartphone usage characteristics (frequency of downloading applications, and download experience of paid applications). Additionally, the smartphone usage characteristic is closely related to the usage duration. The representative result is that the characteristics of people used Music & Video function actively were women in their 20s who downloaded applications more than three times per week, and had a download experience of paid applications. It is positive result for players in the application markets, because it means the users are willing to pay for downloading the paid applications. However, large companies already occupied most of the market share in music applications so that small and medium-sized players should develop an innovative and distinguishable business model in order to success. We believe this research result would provide significant implications for the players in planning the successful business model and developing an user-specific application product.

• The Journal of the Korea Contents Association
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• v.16 no.6
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• pp.19-39
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• 2016

Hallyu in East Europe has been spread since the end of the 2000s and contributed to boost the familiarity and favorability of Korea. Hallyu in East Europe started from Romania and Hungary, Korean dramas and K-Pops spread to Bulgaria. Korea and Bulgaria established a diplomatic relations in 1990; however, people of both countries do not share enough information or knowledge on each other. This study aims to understand the meaning of Hallyu and the ways of building cultural relations through Hallyu based on the cognitions and attitudes toward Korea and Korean culture in Bulgaria. It conducted the Focus Group Discussions(FGD) for 24 Sofia residents in their 20s and 30s. The FGD questions were mainly on the level of familiarity and of impacts of Hallyu in Bulgaria. The Hallyu in Bulgaria is still not so popular although Hallyu has been promoted through the diverse activities of Korean Embassy, Sofia University, Korean language institutions, and the Hallyu fans. The economic and cultural impact of the Hallyu is not yet viable in Bulgaria. In order to be recognized as one of the foreign popular culture in Bulgaria, Hallyu should be promoted with various endeavors for Bulgarian people to experience Korean culture beyond Korean drama and K-Pops based on the understanding of socio-cultural characteristics of Bulgaria. Then, Hallyu will be spread by producing Korean dramas, films, and K-pops reflected by local cultural characteristics in Bulgaria and hybridity of Korean popular culture.