• FLOWER RESEARCH JOURNAL
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• v.19 no.3
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• pp.172-176
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• 2011

A new spray chrysanthemum (Dendranthema grandiflorum) cultivar, 'Magic Yellow' was developed from a cross between 'Artist pink' and 'S03-47' by selection of seedlings and lines at the Flower Research Institute, Gyeongnam Agricultural Research and Extension Services (ARES) from 2003 to 2008. Its characteristics were investigated three times from 2006 to 2008 under condition of forcing culture in spring and retarding culture in autumn. The natural flowering time of 'Magic Yellow' was October 18th, and year-round production was possible by day length treatment. This cultivar has single-type flowers in good harmony with bi-color ray floret and green center. Its flower was 6.0 cm in diameter, and it had 11.4 flowers per stem in autumn. The days to flowering under the short day treatment is about 45 days in spring season, and 'Magic Yellow' showed the vase life of 22.9 days in autumn. This cultivar was registered for the protection in 2008.

• The Korean Journal of Archival Studies
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• no.12
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• pp.237-272
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• 2005

This paper aims to research the historical development of the archival systems in the Primorskii Krai of the Russian Federation. The history of the archives in this region might be divided into the three periods. The first period extended from the territorial acquisition of the Far East to 1938, when the international situation reached the crisis. From then to the end of the Second World War the history of the archives of the Primorskii Krai underwent the second period. The third period has ranged from 1945 to the present day. As the imperialistic countries, including England, Germany and Russia, claimed and conquered the lands in China in the last decade of the nineteenth century, the Russian government was forced to produce a lot of records, which resulted in the establishment of the several archival institutions in the Far East region. Although the Soviet government issued "Decree On the Reorganization and Centralization of Archival Affairs in the Russian Socialist Federated Soviet Republic" in 1918, the political turmoils prevented the Primorskii region from constructing the archival system. However, A. P. Georgievskii and his colleagues made desperate efforts to arrange the archival administration. Thanks to their struggles, the Far Eastern Republic, a buffer state, which existed from April 6, 1920 to November 14, 1922, passed the autonomous regulation, which defined the organization of the committee for the archival administration in the Primorskii region. The Primorskii Krai Archive originated from the committee. As the international situation became aggravated in the East Asia, the Soviet government made a decision to evacuate the records from the Far East region to the western Siberian cities like Tomsk, Omsk and Minusinsk. It was on August 1943 that the Central National Archive of the Far East of RSFSR was established in Tomsk. After the end of the Second World War, the main archival institutions of the Primorskii Krai, that is, the Central National Archive of the Far East of RSFSR and the Primoskii Krai Archive have played an important role in the archival administration in this region. The archivists have not only prepared the catalogues, but also proceeded the descriptions of the archival collections. Furthermore, the archival institutions of the Primorskii Krai have published a series of archives and contributed to the development of the archival system in the Far East of the Russian Federation. It might be concluded that the archives of the Primorskii Krai, reaching were the products of the desperate efforts which the archivists of this region made from the 19th century to the present day, regardless of the political changes.

• Journal of the Korea Convergence Society
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• v.10 no.7
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• pp.243-249
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• 2019

This study is aimed at offering a typology of changes in the social participation of middle-aged and older population and explore determinants for each type of such changes. The data employed for analysis are the 1st survey (2006) through the 6th version (2016) of the Korea Aging Research Panel Survey. Among the respondents of the panel survey, 1,327 males and 1,520 females with a total of 2,847 respondents were analyzed. As a result of applying the growth mixture modelling through the SPS 22.0 and M-plus 8.0 statistical programs, the changes in the social participation of middle-aged and older population have been classified into the 'high-decreasing', 'moderate-increasing' and 'low-stable' trajectory classes. Analysis of the determinants for each class shows that higher the education level, the more likely they are to belong to the high-decreasing and moderate-increasing classes than the low-stable class, and the more the population lives in urban areas, the more likely they are to belong to high-decreasing trajectory class than to low-stable class. Also, it was found that the probability of belonging to moderate-increasing trajectory class was higher than that of the low-stable class when there was no occupation. Through the results of these analyses, the implications of promoting social participation of middle-aged and older population were discussed.

• The Journal of Korean Association of Computer Education
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• v.22 no.5
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• pp.51-65
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• 2019

This study aims to provide educational implications for more strategic online software education by the types of online learning according to learners' self-regulated learning characteristics in the online software education environment and examining the characteristics of each type. For this, variables related to self-regulated learning characteristic were extracted from the log data of 809 students participating in the online software learning program of K University, and then analyzed using hierarchical cluster analysis. Based on hierarchical cluster analysis learner clusters according to the characteristics of self-regulated learning were derived and the differences between learners' learning characteristics and learning results according to cluster types were examined. As a result, the types of self-regulated learning of online software learners were classified as 'high level self-regulated learning type (group 1)', 'medium level self-regulated learning type (group 2)', and 'low level self-regulated learning type (group 3)'. The achievement level was found to be highest in 'high-level self-regulated learning type (group 1)' and 'low-level self-regulated learning type (group 3)' was the lowest. Based on these results, the implications for effective online software education were suggested.

• Journal of the Korean Geotechnical Society
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• v.35 no.3
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• pp.5-16
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• 2019

With the recent concentration of urban populations, the constructions of large structures are increasing, along with the development of foundations for large structures. PHC Piles have been used in many structures ever since Japanese introduced the technology at the end of the 20th century. Recently, many studies on the use of the PHC Pile have been carried out as earth retaining using the merits of PHC piles. In this study, static axial compression tests were conducted on the PHC-W piles constructed as column-type in building underground additional wall using the PHC-W earth retaining wall. The end bearing capacity of pile was calculated using the axial load transfer measurement that was obtained from the static axial compression test result. Since end bearing capacity of the PHC-W pile embedded in weathered rock showed a different behaviour from the conventional PHC pile, the calculation method of end bearing capacity for column-type PHC-W piles would be proposed. The unit ultimate end bearing equation proposed for single and group PHC-W pile embedded in weathered rock is $q_b=13.3N_b$ and $q_b=6.8N_b$.

• 한국사회정책
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• v.23 no.1
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• pp.125-150
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• 2016

This study was carried out to empirically analyze the hypothesis that the impact of the welfare status on the welfare attitudes is moderated by each individual's level of confidence in government. To do this, this study focused on the welfare status known as the significant predictors of welfare attitudes and measured the welfare status as a gap between 'welfare contribute' and 'welfare benefit' in a single dimension, which is defined as 'material sacrifice'. Also, this study examined the main effect of material sacrifice and trust in government on the welfare attitudes and moderating effect of trust in government on relationship between material sacrifice and welfare attitudes. This study was performed with secondary data from 8th year of "2013 Korea Welfare Panel Study". Hypothesis of this study were verified using hierarchical multiple regression analysis. The major findings of this study are summarized as follow. 'Material sacrifice' was found to be negatively associated with the welfare attitudes. However, as the confidence in which social policies will be carried out competently by government increases, it was confirmed that the negative effect of material sacrifice on the welfare attitudes was moderated. It suggests that self-material interests associated with welfare could be moderated by beliefs and expectations about the government's functions, which means that expanding the reliance on the social policy is an important task in order to lead a social consensus for the welfare expansion.

• Journal of The Korean Association of Information Education
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• v.24 no.5
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• pp.483-494
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• 2020

With the advent of the 4th Industrial Revolution, interest in AI education is increasing. In order to cultivate talented people with AI competencies who will lead the future, AI education must be conducted in a sound manner at the school site. Although AI education is being conducted at home and abroad, it was determined that the role of the AI education platform is important to implement better AI education, so this study investigated the perception of experts on the AI education platform. A perception survey was conducted based on five criteria: teaching and learning management, educational contents, accessibility, performance of AI education platform, and level suitability of elementary school students. As a results, the number of 103 educational experts selected 'Entry' as the most proper platform among the eight platforms - 'Machine learning for Kids', 'Teachable Machine', 'AI Oceans(code.org)', 'Entry', 'Genie Block', 'Elice', 'mBlock' and etc. Analysis shows that this is because 'Entry' provides quality educational content, has convenient accessibility, is easy to manage teaching and learning, as well as an AI education platform suitable for the level of elementary school. In order to apply various AI education platforms to the school field, it is necessary to train teachers in AI-related training to train them as AI education experts, and to continuously provide opportunities to experience AI education platforms. In this study, there are limitations to what is called 'a population perception survey'. because only 103 people were surveyed, and most of the experts are working in a specific area(Gyeonggi-do). In the future, it is judged that research targeting experts at the national level should be conducted to supplement these limitations.

• Journal of the Korean Geotechnical Society
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• v.38 no.5
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• pp.47-59
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• 2022

A series of experiments were performed to investigate the design and application of a rubble-ground modification method with grout injection. A small-sized injection machine was designed, and the grouts with various mix proportions were injected into 25 mm aggregate using the designed small-sized injection machine. With the compressive strength of the grout ranging from 20 to 80 MPa, the uniaxial compressive strength of the grout-filling bodies with clean gravels was higher than 1/6th of the strength of grouts themselves. However, this fraction may reduce depending on the interface conditions. The erosion resistance of the hardened grout was evaluated, and it was determined that the grout with a strength greater than 15 MPa did not require erosion consideration. Moreover, a full-scale injection test was performed for 25 cm-sized rubbles in cages with a diameter greater than 1 m and a height of 1.2 m to evaluate the filling characteristics of the grout. Results from this test indicated that the grout flowability sensitively influenced the filling characteristics.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.162-170
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• 2021

The Smart City Living Lab is becoming important as a local innovation platform to develop urban solutions. In January 2018, the 4th industrial innovation committee, which was a direct subordinate from the president, empathized citizens' participation and their roles within the Smart City [Urban Innovation and Future Growth Engine-Creating Smart City Strategy]. This was the starting point of the living lab. The central government and local governments have been promoting various types of living labs to encourage citizens to participate. On the other hand, due to the lack of systematic concepts and theories for practicing and structuring living labs, the practice is not performed well. This study aimed to develop systematic approaches and implementation methods of the public-led Smart City Living Lab. The Full-cycle Smart City living Lab model was designed by integrating smart city living lab work processes, as suggested in the standards of the national land plan, double design diamond framework, which is a type of innovative design methodology, and design thinking process. The entire cycle Smart City living lab model requires four components to practice the living lab, such as framework, module, process, and methodologies. In the future, this model is expected to be incorporated in the Smart City Living Lab.

• Korean Journal of Culture and Social Issue
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• v.28 no.3
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• pp.513-527
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• 2022

This study was conducted to examining the socio-cultural impact of the COVID-19 pandemic that swept the world around 2020, and the transformation of norms and social problems due to COVID-19. For this, the characteristics of changes in the socio-cultural norms of the 14th century European Black Death, a representative example of the pandemic, were derived, and based on this, the COVID-19 pandemic was analyzed. The Black Death served as an opportunity to change social norms based on the existing religious authority and the power of the feudal system to the Enlightenment. The population declination and labor shortage also promoted commercialization and mechanization. Printing, which spread during this period, led to the popularization of knowledge, which raised the level of thinking and led to epochal scientific development. This became the foundation of the Industrial Revolution. Like the recent Black Death, COVID-19 has triggered changes in social norms. The technological environment of metaverse, a mixture of virtual and reality, has changed the norm of a consistent identity into free and open identities exerting various potentials through alternate characters. In addition, meme, which are about people being friendly to those with the same worldview as him on the metaverse, weakened the sense of isolation in non-face-to-face situations. Artificial intelligence (AI), which developed during the COVID-19 pandemic, has entered the stage of being used for creative activities beyond the function of assisting humans. Discussions were held on what new social problems would be created by the social norms changed due to the COVID-19 pandemic.