• Microbiology and Biotechnology Letters
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• v.49 no.2
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• pp.225-238
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• 2021

CH₄-oxidizing and N₂O-reducing bacterial consortia were enriched from the rhizosphere soils of maize (Zea mays) and tall fescue (Festuca arundinacea). Illumina MiSeq sequencing analysis was performed to comparatively analyze the bacterial communities of the consortia with those of the rhizosphere soils. Additionally, the effect of root exudate on CH₄ oxidation and N₂O reduction activities of the microbes was evaluated. Although the inoculum sources varied, the CH₄-oxidizing and N₂O-reducing consortia derived from maize and tall fescue were similar. The predominant methanotrophs in the CH₄-oxidizing consortia were Methylosarcina, Methylococcus, and Methylocystis. Among the N₂O-reducing consortia, the representative N₂O-reducing bacteria were Cloacibacterium, Azonexus, and Klebsiella. The N₂O reduction rate of the N₂O-reducing consortium from maize rhizosphere and tall fescue rhizosphere increased by 1.6 and 2.7 times with the addition of maize and tall fescue root exudates, respectively. The CH₄ oxidization activity of the CH₄-oxidizing consortia did not increase with the addition of root exudates. The CH₄-oxidizing and N₂O-reducing consortia can be used as promising bioresources to mitigate non-CO₂ greenhouse gas emissions during remediation of oil-contaminated soils.

• Korean Journal of Comparative Education
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• v.28 no.4
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• pp.107-135
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• 2018

This study examines the contents and characteristics of 'Double First Class University Plan', which is conceived by Chinese government in 2015, following the current 211, 985 projects to develop comprehensively a group of elite Chinese universities and individual university departments into world class universities and disciplines by the end of 2050. For this study, we used the literature analysis method and collected various policy documents, research papers, newspapers and books published in China regarding this plan. First, this study looks at the development process, performance and limitations of 211, 985 projects. Second, it defines the concept of the world class university mentioned in China, and looks at the objectives and highlights of the plan. Finally, this study summarizes the characteristics of 'Double First Class University Plan' and the results such as focusing on the university's tradition and characteristic, cultivation and attraction of human resources, intensive financial support, and the introduction of a competitive system. Based on the results, this study proposes several implications such as establishing and implementing long-term and comprehensive higher education policies, inducing local government participation and support, focusing on fostering talents and developing disciplines, and putting emphasis on Korean characteristics in developing world class universities.

• 한국노년학
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• v.38 no.1
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• pp.1-14
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• 2018

Everyday hearing handicap caused by presbycusis ultimately reduces quality of life in older adults. The aim of this study was to explore effects of cognitive impairment on self-reported hearing handicap in older adults with early-stage presbycusis. We compared K-HHIE scores between 40 elderly subjects with mild cognitive impairment (MCI) and age- and hearing-threshold matched 40 cognitively normal elderly (CNE) subjects. The results are as follows: 1) The MCI group scored significantly higher than the CNE group on the social/situational and emotional sections, and in total. 2) The MCI group scored significantly higher than the CNE group on all four subscales, and the most significant group difference was on the first subscale relating to interpersonal relationships and social handicaps. 3) Both groups scored highest on the item 8 (problems hearing whispering sounds) and item 15 (problems hearing TV or radio sounds). Besides those two items, the MCI group also scored high on the item 21 (problems hearing in a restaurant), item 6 (problems hearing when attending a party), item 3 (avoiding groups of people), and item 20 (personal or social restrictions). Our findings suggest that, among older adults with early-stage presbycusis, older adults with cognitive impairment tend to report greater everyday hearing handicap than their peers with normal cognitive function. Especially, they show significant problems hearing in background noise or multi-talker situations, which cause social restrictions and social/emotional loneliness.

• Journal of the Korean Chemical Society
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• v.63 no.4
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• pp.280-288
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• 2019

The purpose of this study is to draw implication for scientific inquiry study by investigating level of understanding and actual state regarding the elementary school teachers' scientific inquiry. The survey was conducted toward 42 elementary school teachers who work at the D city by using questionnaire of Views About Scientific Inquiry. Actual state of understanding of scientific inquiry was investigated by categorized the responses to the level of understanding of the eight aspects of scientific inquiry in three levels (informed, mixed, naive) based on analysis criteria. And analyze whether the characteristic of the subjects affect to level of understanding about aspect of scientific inquiry. As a result of the analysis, the two aspects among the eights aspects of scientific inquiry; 'Inquiry procedures are guided by the question asked' and 'Research conclusions must be consistent with the data collected' were appeared to have high rates of informed level of understanding. In the remaining six perspectives, most of elementary school teachers had naive and mixed level of understanding, so informed level of understanding took a relatively low proportion. It implies that elementary school teachers who teach inquiry in the field have limit to understand about scientific inquiry. These results indicated that experiences that have taught students and science related training courses that open sofar have a little influence to increase comprehension about scientific inquiry. Therefore, it is required to reinforce the teachers' understanding about scientific inquiry and to formulate different form of plan unlike existing way of teaching for teaching scientific inquiry.

• International Area Studies Review
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• v.20 no.2
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• pp.141-172
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• 2016

The aim of this study was to view Korean Hallyu stars, the advertisement models of Korean cosmetics brands, as human brands in the Chinese cosmetics market. Furthermore, this study attempted to verify whether the attributes of human brands, such as reliability, professionalism, attraction, intimacy, similarity and favorable impression, affect Chinese consumers' affection toward Korean celebrities, and whether such Chinese consumers recognize the authenticity of the products, sellers, and companies of Korean cosmetics brands advertised by Korean stars. The results of empirical analysis indicated that among the attributes of Korean stars, the advertisement models of Korean cosmetics companies, Chinese consumers' affection toward Korean stars was positively affected by reliability, attraction and similarity, but not by professionalism, intimacy and favorable impression. Furthermore, results showed that the consumers' affection toward Korean stars positively affected the authenticity of the brands advertised by the celebrities.

• Journal of vocational education research
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• v.36 no.4
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• pp.21-40
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• 2017

The purpose of this study is to demonstrate the effects of job training program satisfaction on objective training performance such as employment rate. In addition, the NCS(National Competency Standards) level was considered as a moderating variable in order to clarify the boundary conditions between job training program satisfaction and employment rate. The data used for the analysis of the research model are 513 job training programs that provide employment rate information among job training programs of 2016 Gwangju area on HRD-Net. The results of the analysis are summarized as follows. First, The satisfaction score of the job training programs calculated on the basis of the six dimensions of satisfaction is 4.46. The NCS level of the job training programs ranged from 2 to 6. The average score of the programs was 3.32. Second, satisfaction with the job training programs has no statistically significant effect on the employment rate, but the NCS level of the job training programs was found to be statistically significant in the interaction effect. Finally, policy implications, limitations, and further research directions are mentioned through this study.

• Journal of vocational education research
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• v.35 no.4
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• pp.155-176
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• 2016

This study analyzed content of and recognition on occupations shown from Technology Home Economics textbooks of the high school elective subject having a higher connection with the career development capability for the occupational world as shown from a curriculum analysis. Hence, this study selected 3 kinds of high school Technology Home Economics textbooks with a higher share from 6 in the 2007 revised curriculum and analyzed a frequency by characteristic of occupational content and recognition on description of a occupation. Content analyzed by researchers was examined by 2 school teachers to ensure the validity and objectivity of research findings. Research findings show that there is a great deal of frequency difference in occupations suggested by publisher and unit in the Technology Home Economics subject. Also suggestion frequency of the occupational classification by level from Korean standard industrial classification did not correspond to an actual situation of employment. Occupation names suggested from textbooks occupied 3.3% of those by Korean Occupation Dictionary, showing a higher suggestion ratio at occupations preferred by adolescents. In the textbooks, occupations were suggested from reading materials, photos and illustrations more than from texts. Recognition on descriptions of occupations showed for the most part the neutral(82.8%) and the positive16.2%)', and there was no biased intention even from some negative cases(1.0%). Based on research findings, this research has significance in that it suggested things to be considered for teaching career development capability in the high school Technology Home Economics subject and need for cultivating teachers' specialty to understand occupations and instruct career development. It also suggested improvements to be required for a new curriculum textbook.

• The Journal of Korean Academy of Sensory Integration
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• v.16 no.2
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• pp.15-25
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• 2018

Objective : The purpose of this study was to examine the differences between motor functions and executive functions according to the timing of children with attention deficit hyperactivity disorder (ADHD). Methods : The subjects were 32 children with ADHD aged between 6 and 12 living Busan. To assess the timing, Long Form Assessment (LFA) of Interactive Metronome (IM) was used. Bruininks-Oseretsky of Motor Proficiency, Second Edition (BOT-2) were also used to assess motor functions. STROOP Color and Word Test and Children's Color Trails Test were used to evaluate executive functions. Mann-Whitney U tests were used to determine the differences between the executive functions and the motor functions according to the timing. Results : Comparing the inter-group motor functions according to the timing, there was a statistically significant difference in the Fine manual control and Fine motor precision in BOT-2 (p<.05). Comparing the inter-group executive functions according to the timing, there was not statistically significant difference (p>.05). Conclusion : Among the deficits in ADHD children, we could see the differences between motor function and executive function according to timing function. This study would be meaningful in that the results could be a basic data for study on the timing of children of ADHD in the future.

• Korean Journal of Heritage: History & Science
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• v.44 no.4
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• pp.154-171
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• 2011

Assessing values in establishing conservation principles has been at the heart of discussions for the last twenty years since conservation has been recognised as a social process to include various kinds of stakeholders for making a rational decision rather than a single scientific activity by a small group of experts. Such perception makes values attributed to cultural heritage important in deciding the reason why, the way how to, and the thing what to conserve making value assessment become crucial theme to understand and developing value-based conservation process. However heritage values, the way of assessing them, and establishing value-based conservation principles have been less studied in Korea. This thesis aims to initiate studies of heritage values and encourage discussion for setting out value-based conservation principles. It has three main chapters: 1. to analytically review previous studies on value assessment to redelineate various kinds of values which can be attributed to Korean cultural heritage; 2. to examine affecting factors in assessing values and significance, which are authenticity and historical and cultural dimension of value assessment; 3. to develop a process to establish value-based conservation principles. This study left several areas to be developed in future studies: 1. deeper understanding of various kinds of values from local perspective taking actual cases; 2. addressing problems in compromising conflicting values and providing solution to conserve all attributed values withing devaluing certain aspects of values; 3. providing guidance for practicing value - based decision - making process and setting out regular training opportunities for heritage - related professionals.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.56-65
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• 2019

This study empirically analyzes the effect of weather on pedestrian volume in an urban space. We used data from the 2009 Seoul Flow Population Survey and constructed a model with the pedestrian volume as a dependent variable and the weather and physical environment as independent variables. We constructed 28 models and compared the results to determine the effects of weather on pedestrian volume by season, land use, and time zone. A negative binomial regression model was used because the dependent variable did not have a normal distribution. The results show that weather affects the volume of walking. Rain reduced walking volume in most models, and snow and thunderstorms reduced the volume in a small number of models. The effects of the weather depended on the season and land use, and the effects of environmental factors depended on the season. The results have various policy implications. First, it is necessary to provide semi-outdoor urban spaces that can cope with snow or rain. Second, it is necessary to have different policies to encourage walking for each season.