• Journal of Korean Society of Forest Science
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• v.102 no.1
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• pp.59-65
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• 2013

The jujube is an important fruit tree species in Korea. Traditionally, classifications of jujube cultivars have been based on morphological characters; however, morphological identification can be problematic because morphological traits are affected by environmental conditions. Therefore, DNA markers are now being used for the rapid and accurate identification of plant species. Inter-simple sequence repeat (I-SSR) is one of the best DNA-based molecular marker techniques, which is useful for studying genetic relations and for the identification of closely related cultivars. In this study, 5 Korean jujube trees and 1 jujube tree imported from China were analyzed for 16 I-SSR primers. Amplification of the genomic DNA of jujube cultivars by using I-SSR analysis generated 100 bands, with an average of 6.25 bands per primer, of which 45 bands (45%) were polymorphic. The number of amplified fragments with I-SSR primers ranged from 2 to 13. The percentage of polymorphism ranged from 10% to 100%. I-SSR finger printing profiles showed that 'Boeun jujube' and 'Daeri jujube' had characteristic DNA patterns, indicating unequivocal cultivar identification at molecular level. According to the results of clustering analysis, the genetic similarity coefficient ranged from 0.68 to 0.92. 'Boeun jujube' and 'Daeri jujube' were divided into independent groups, and 'Bokjo jujube', 'Geumseong jujube', 'Wolchul jujube', and 'Mudeung jujube' were placed in the same group. Therefore, I-SSR markers are suitable for the discrimination of 'Boeun jujube' and 'Daeri jujube' cultivars.

• Korean Journal of Environment and Ecology
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• v.24 no.2
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• pp.186-193
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• 2010

In order to examine the traits of sluice gate water control, halophyte community formation and their inter-relations in Saemangeum, both water level condition and halophyte community formation were analyzed periodically and spatially on the topographic map with Surfer, Saemageum Spatial Analysis System, and related field reports. The traits of water level condition are that average water level in the growing period of halophytes was similar to annual average water level, annual low level and high level appeared in the growing period, and water level was usually maintained within a range of -1.0m~0.5m above mean sea level, but it has changed more frequently year by year. Routine water level control, natural disaster prevention, construction, and civil appeal took major percentages of the reasons for sluice gate's opening and shutting. Since 2007, not only the overall control frequency of sluice gate but also its control frequency for construction and natural disaster prevention have increased outstandingly. Halophyte community had formed at a rate of 1,209ha/year in the 4,315 ha land in 2008, 6.3 times larger than in 2005, and 2,382 ha above around 1.0m was estimated to be artificially vegetated, 89.1 % of the 2,673ha-size sown area. High water level was found to be a more possible determinant than average water level or low water level in halophyte community formation and it was thought to be secondary factors whether tillage was conducted or/and whether surface sealing formed.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.101-113
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• 2018

This study aims to elucidate the major issues and problems of the North Korean woman defectors focusing on the Community settlement system of Korean society in the time of the historical change of the rapidly changing inter - Korean relations starting from the recent summit talks between North and South Korea. Analytical methods were conducted using literature and previous research data. The results of this study are summarized as follows. The necessity of legal and institutional support reflecting the characteristics of life of North Korean woman defectors and experience of defecting, the necessity of development and management of employment education and employment support program for stable settlement support, the necessity of an integrated support system of public - private cooperation governance structure The need for a tailored social adaptation program tailored to individual needs arises. The results of this study are important to suggest the direction of improvement of the actual system through studying the policy and system of the settlement of Korean society in advance of the unification era. In future research, the support system for the settlement of the South Korean society A variety of studies to identify the factors for role formation will be needed.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.39 no.6
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• pp.53-67
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• 2002

The multimedia synchronization is one of the key issues to be resolved in order to provide a good quality of multimedia related services, such as Video on Demands(VoD), Lecture on Demands(LoD), and tele-conferences. In this paper, we introduce an adaptive multimedia synchronization algorithm using the level of buffers and load of servers, which are modeled and analyzed by ExSpect, a Petri net based simulation tool. In the proposed algorithm, the audio and video buffers are divided to 5 different levels, and the pre-defined play-out speed controller tries to make the buffer level to be normal in different temporal relations between multimedia streams using buffer levels and server loads. Because each multimedia packet is played by the pre-defined play-out speed, the media data can be reproduced within the permissible limit of errors while preserving the level of buffers to be normal. The proposed algorithm is able to handle and support various communication restrictions between providers and users, and offers little jitter play-out to many users in networks with the limited transmission capability. The performance of the developed algorithm is analyzed in various network conditions using a Petri net simulation tool.

• Journal of Korean Medicine Rehabilitation
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• v.18 no.3
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• pp.133-145
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• 2008

Objectives : The aim of this study was to observe and analysis the effectiveness of clinical treatments on the growth of children treated with Korean herbal medicine (KHM). Methods : Forty-two children of growth retardation were evaluated from January 2007 to May 2008. All children were administered KHM with diet and exercise guidance. Height percentile and predictive height were calculated following the General Growth Statistics Result (2007), and compared those of pre-treatment with post-treatment. Results : Thirty-one of them were improved (73.8%) and eleven were not (26.2%). The mean growth rate was 7.2cm/yr for male and 6.8cm/yr for female. The mean growth percentile of male showed 7.6% improvement (p=0.003), female 4.4% respectively (p=0.036). The mean predictive height of male showed 2.2cm improvement (p=0.005), female 1.0cm respectively (p=0.007). Change of growth percentile and height were significantly higher on period of prepuberty, and in small children below 50% of height percentile. About inter-relations between growth improvement and compliance of diet, exercise or medication, meaningful statistics were shown in diet control than the others (p=0.077). Diet compliance was in close connection with exercise, but others were not shown close correlations. Conclusions : These results showed that KHM showed promising results on children growth and healthy diet would be an important factor for growth of children. And it was recommended that KHM should be applied on period of prepuberty and smaller than average height.

• Journal of the Economic Geographical Society of Korea
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• v.23 no.2
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• pp.147-165
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• 2020

The aim of this study is to find out Korean electronic industries' production network in Hanoi Red River Delta, Vietnam and its change based on customer-following overseas expansion. In-depth interviews with Korean subcontractors were conducted to examine the characteristics of customer-following overseas expansion of Korean subcontractors. Korean subcontracting corporations in electronic industries have expanded into Vietnam as the suppliers to Korean transnational corporations. Since 1990s, Korean corporations have invested into Vietnam but since late 2000s its industrial and geographical concentration has been shifted from textile and clothing industries in Southern Vietnam to electronics in Northern Vietnam. The customer-following overseas expansion of the subcontractors has emerged in three aspects: physical proximity, asymmetrical inter-firm relations and organizational embeddedness. During the process of customer-following overseas expansion, Korean electronic industry production network was transplanted into Vietnam and partially modified. This is because the company's hierarchy and difficulties in changing its trading relationship have affected the process of advancing into overseas markets. Korean transnational corporations seek to establish a stable suppliers through expansion accompanying with its subcontractors, and providing financial and non-financial support to its subcontractors.

• The Journal of the Korea Contents Association
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• v.17 no.9
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• pp.1-11
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• 2017

The importance of data curation is increasingly recognized as the need of data reuse drastically grows. Due to recent data explosion, scientists invest almost 90% of their efforts in the retrieval and collection of data needed to their study. In this paper, we deal with the development and application of a collaborative environment for community-driven data curation which is essential to enhance scientific data reusability and citability. The collaborative scientific data curation environment focuses on the cross-linking between data (or data collections) and their associated literatures to capture and organize inter-relations among research results in a specific domain. Also, plenty of contextual information is provided as metadata in order to support users in understanding data. The cross-linking has been realized by using DOI system to guarantee global accessibility to data and their relationships to literatures. The curation environment has been adopted to build a community-driven curated DB by a globally well-known intrinsically-disorderd protein research group. The curated DB will drastically reduce researchers' efforts to retrieve and collect the data required for scientific discovery.

• Korean Journal of Comparative Education
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• v.28 no.3
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• pp.265-289
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• 2018

The word culture itself is very difficult to define. Therefore, in order to confine its meaning, many scholars prefer to attach different prefixes such as inter-, bi-, multi-, cross-, pluri-, trans-, in front of the adjective cultural instead of defining the word culture itself. These prefixes have been used along with about thirty various nouns, ranging from adaptability to training. In this paper, we focused on the adjective intercultural. In fact, this adjective has been widely used, not only in education but also in the communication and philosophy sectors among the world academia discourse. Intercultural Education appeared in America in the 1930s and also in the 1970s in Europe, in order to improve relations between immigrants and the people who received them. Intercultural communication arose in America as a cultural education program for American diplomats and professionals, while interculturalism appeared in the 1970s in Canada as a policy in opposition to multiculturalism. Intercultural philosophy started in 1990s Germany as philosophical speculation against Eurocentrism. As such, the adjective intercultural has been used with a combination of diverse nouns. In regards to this, one can ask the following questions: did the scholars have any kind of agreement during their discussions? Did they communicate and make a positive impact on each other? If not, how can we interpret their common use of the word intercultural? To answer these questions, we tried to compare fives types of intercultural waves of the 20th century, paying particular attention to their time periods, places and backgrounds of appearance, their emphases and shortcomings. Following our research, we found that intercultural waves in the 20th Century have developed independently despite their common use of the word intercultural. Therefore, we concluded that the use of same word intercultural was the result of humankind's effort to approach cultural differences in a positive way in the global village created by internationalization and globalization of the 20th century.

• Korean Journal of Legislative Studies
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• v.22 no.2
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• pp.53-75
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• 2016

This article presents a descriptive analysis on national security policy platforms promoted by the ruling parties of South Korea during general and presidential elections. National security platforms made during the elections campaigns are a window that allows us to see how the ruling party perceives the threat environment, opportunity-structures, policy preferences and material capabilities faced by the state. South Korea presents a unique case since it faces constant military threats from North Korea and interacts with China and the United States. Therefore, the national security policy platforms, which are explicitly campaigned during the general and presidential elections, showcases the worldview of the ruling party. The study essentially focuses on three areas of the platforms - its threat perception on North Korea, the ROK-US alliance and the future vision for the Korean peninsula by covering two presidential elections and three general elections for the last 20 years.

• Korean Journal of Social Welfare Studies
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• v.40 no.3
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• pp.5-40
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• 2009

As of June 2008, the government's expansion policy for the long-term care service infrastructure has achieved an outstanding 96.4% occupancy rate of facilities across the country. Despite such achievement, practical issues including the physical lack of facilities, disproportional regional spread and decline in government accountability have raised concerns about the effectiveness of the policy's implementation. This study was aimed at defining the implementation procedure of expansion policy for long-term care service infrastructure, analyzing variables that affect it, examining the problems revealed in implementation procedure, and suggesting improved plan on that policy. Research methods were to review literatures on infrastructure expansion policy, to conduct case studies on K province, C city and 4(2 corporations and 2 privately owned) facilities in C city for studying practical implementation procedure on a local government level, and to use Alexander(1985)'s framework for analyzing variables of policy implementation. As a result of this study, policy variables including the clarity and adequacy of policy goal, nature of service providers, task and responsibility between government authorities, and implementation variables such as propensity toward budget allocation, financial restraint, swift utilization of budgets and the streamlining of involved procedures and inter-agency relations stood out as the main factors affecting policy implementation. In adddition, this study suggested several improvement measures such as accounting facilities need based on real local demand and supporting to private participation and so on.