• Korean Security Journal
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• no.51
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• pp.223-249
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• 2017

The purpose of this study is to analyze the actual situation of crime victimization by North Korean defectors and to examine whether any of the protection and support systems for defectors has a statistically significant effect on the perceived effectiveness for preventing the criminal victimization of North Korean Defectors. The subjects of this study were 107 police officers from the 17 provincial police departments. Independent variables were (1) social adaptation education in Hanawon, (2) protection officer system, (3) legal support system, (4) private participation system, (5) support for family life, (6) community participation activity. And the dependent variable is the crime prevention effectiveness for the defectors. As a result of multiple regression analysis, it was found that the independent variables that have a significant effect on the effectiveness of prevention of crime victimization were protection officer system and support for family life. First, in order to prevent the crime victimization of North Korean defectors in advance, three kinds of protection officer system that will be received after the transfer of the residence should play the role successfully. Second, the efforts of the government and municipalities alone are insufficient for the early settlement of North Korean defectors. Therefore, it is necessary to diversify the support and protection programs for North Korean refugees through cooperation with civic organizations. Third, it is necessary to expand the legal education time so that North Korean defectors do not suffer crime because of lack of legal knowledge. Fourth, in order to prevent North Korean defectors from being victimized by various kinds of crime, it is necessary to actively support them so that family life can be stabilized.

• Clean Technology
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• v.18 no.2
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• pp.209-215
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• 2012

The performance and removal efficiencies of a pilot scale biofilter were estimated by using ammonia and hydrogen sulfide as the odorous gases. Expanded polyurethane foam coated with powdered activated carbon and zeolite was used as a biofilm supporting medium in the biofilter. Odorous gases from the sludge thickener of a municipal wastewater treatment plant were treated in the biofilter for 10 months and the inlet ammonia and hydrogen sulfide concentrations were 0.1-1.5 and 2-20 ppmv, respectively. The removal efficiencies reached about 100% at the empty bed retention time (EBRT) of 3.6-5 seconds except for the adaptation periods. The pressure drop of the biofilter caused by the gas flow was also low that the maximum attained was 31 mm $H_2O$ during the operation. Its stability was confirmed in the long term due to the fact that the biofilter and the polyurethane medium had a minimum plugging and compression. The microbial community on the medium is critical for the performance of the biofilter especially the distribution of ammonia oxidizing bacteria (AOB) and sulfur oxidizing bacteria (SOB). The distribution of Nitrosomonas sp. (AOB) and Thiobacillus ferroxidans (SOB) was confirmed by FISH (fluorescence in situ hybridization) analysis. The longer the operation time, the more microbial population observed. Also, the medium close to the gas inlet had more microbial population than the medium at the gas outlet of the biofilter.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.44 no.3
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• pp.64-69
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• 2007

Motion control of the system is a position control of motor. Motion control of an uncertain robot system is considered as one of the most important and fundamental research directions in the robotics. Some distinguished works using linear control, adaptive control, robust control strategies based on computed torque methodology have been reported. However, it is generally recognized within the control community that these strategies suffer from the following problems : the exact robot dynamics are needed and hard to implement, the adaptive control cannot guarantee the performance during the transient period for adaptation under the variation, the robust control algorithms such as the sliding mode control need information on the bounds of the possible uncertainty and disturbance. And it produces a large control input as well. In this dissertation, a motion control for the unmanned intelligent robot system using disturbance observer is studied. This system is affected with an impact vibration disturbance. This paper describes a stable motion control of the system with the consideration of external disturbance. To obtain the stable motion independently against the external disturbance, the disturbance rejection is strongly required. To address the above issue, this paper presents a Disturbance OBserver(DOB) control algorithm. The validity of the suggested DOB robust control scheme is confirmed by several computer simulation results. And the experiments with a motor system is performed to give the validity of applicability in the industrial field. This results make the easier implementation of the controller possible in the field.

• Journal of Gifted/Talented Education
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• v.26 no.3
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• pp.493-514
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• 2016

Since the Gifted and Talented Education Promotion Law was enacted 15 years ago, in Korea, gifted education in Korea has continued rapid and quantitative growth. The number of gifted classes or institutes for the gifted have increased, as well as the number of gifted education teachers increasing their participation in professional development training and educational activities. However after 2014, gifted education is somewhat shrinking. Due to the controversy of private education and expansion of social welfare in Korea, administrative and financial support for gifted education is being reduced. This study reviewed the gifted education policies promoted by successive governments and analyzed the relationship between politics and support for gifted education efforts by the government. In addition, the phenomenon of the recently shrinking gifted education in Korean society was analyzed in various aspects. These aspects include: decreasing quantitative growth due to the weakening of administrative and financial support from central and local governments on gifted education, regulations on suppressing private education, social inequality to gifted education access, and lack of solidarity in the gifted education scholastic community. Based on this analysis of gifted phenomenon, ways of developing the ideological and practical aspects of future-oriented gifted education were suggested. In the ideological dimension, it was emphasized that gifted education must move away from insularity and the adhesive perspective of Korean society on the concept of giftedness, the concept of intelligence and the recognition of the legitimacy of gifted education. On the other hand, in the practical dimension, the following points were identified: the collection of empirical data on the economic impact of gifted education, gifted education amendment of the statutes, adaptation of the gifted education program with gifted identification, diversification of gifted education service system, and actively promoting new research topics in relation to the Gifted and Talented Education.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.2641-2654
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• 2014

In the smart media environment, magazine industry has been experiencing a transition to ecosystem of value network, which includes high complexity and ambiguity. Using case study method, this article conducts research on digital convergence, the model of magazine ecosystem and adaptation strategy of global magazine companies. Research findings have it that the way of contents production of global magazines has been based on collaborative production system within communities, expert communities, creative users, media contents companies and magazine platform. The system shows different patterns and characteristics depending on magazine-driven platform, Platform-driven platform or user-driven platform. Collaboration system has been confirmed in various cases: Huffington Post and Zinio which collaborate with media contents companies, Amazon magazines and Bookish with magazine companies, Huffington Post and Wired with expert communities, and Flipboard with creative users and communities. Foreign magazine contents diverge into (paper, electronic, app and web magazine) as they start the lively trades of their contents on the magazine platform. In the area of contents uses, readers employ smart media technology effectively such as cloud computing, artificial intelligence and module individualization, making it possible for the virtuous cycle to remain in the relationship within communities, expert communities and creative users.

• Journal of The Korean Society of Integrative Medicine
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• v.6 no.4
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• pp.171-182
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• 2018

Purpose : The purpose of this study was to examine the relationship between the characteristics of caregivers and adults with intellectual disability, and social support, family function, and rehabilitation needs in caregivers. Methods : A total 98 pairs of adults with intellectual disability and their caregivers participated in this study. The researchers examined the general characteristics of the adults with intellectual disability and their caregivers. The evaluation included analysis of the level of activities of daily living, ability to communicate, and health status of the adults with intellectual disability, while the family income, health status, utility and the need for rehabilitation, social support (multidimensional scaled perceived social support, MSPSS) and family function (adaptation, partnership, growth, affection, resolve, and APGAR index) of the caregivers were measured. The data collected were analyzed to determine the relationship of the characteristics of adults with intellectual disability and the social support, family function, and rehabilitation needs of caregivers using regression and correlation analysis. Results : The rehabilitation needs were significantly correlated with the age of the adults with intellectual disability (p<.01), and the subjective health status of the caregivers (p<.05). The education level of the caregivers affected social support significantly ($R^2=.058$, p=.021). The communication ability of the adults with intellectual disability affected family function ($R^2=.071$, p=.01). The social support of caregivers had a significant effect on family function ($R^2=.488$, p<.001). Conclusion : These findings suggest that the barriers to community rehabilitation should be lowered, and the authors discussed the results of the present investigation.

• Animal Bioscience
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• v.34 no.11
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• pp.1784-1793
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• 2021

Objective: An experiment was conducted to evaluate the effects of bamboo leaf extract (BLE) on the production performance, rumen fermentation parameters, and rumen bacterial communities of heat-stressed dairy cows. Methods: The experiment comprised a 14-day adaptation period and a 21-day experimental period and was conducted in a high-temperature and humidity environment (daily mean ambient temperature = 33.5℃±1.3℃; daily mean relative humidity = 64.9%±0.8%, daily mean temperature-humidity index = 86.2±0.4). Twelve Holstein dairy cows were randomly allocated into two groups. A total mixed ration supplemented with BLE at 0 (CON) and 1.3 g/kg dry matter (DM) were fed, respectively. Feed intake and milk yield were recorded daily. Milk samples were collected on 1, 11, and 21 d of the experimental period to analyze milk performance. Rumen fluid samples were collected on 21 d of the experimental period to analyze rumen fermentation parameters and rumen bacterial communities. Results: Compared with the control group, supplementation of BLE increased milk yield (p<0.01), milk fat yield (p = 0.04), 4% fat-corrected milk (p<0.01) and milk fat content (p<0.01); reduced somatic cell count (p<0.01). No differences in DM intake and milk protein or lactose content were observed between two groups. Supplementation of BLE also increased the rumen total volatile fatty acid (p<0.01), acetate (p<0.01), butyrate (p<0.01), and valerate (p = 0.05) concentrations. However, no significant effects were observed on rumen pH, ammonia nitrogen, propionate, acetate/propionate ratio, isobutyrate, or isovalerate. Furthermore, BLE increased the rumen bacterial abundance and the diversity of the rumen bacterial community. The BLE reduced the Firmicutes/Bacteroidetes abundance ratio and increased the abundances of Butyrivibrio_2 (p<0.01) and Ruminococcus_2 (p<0.01). Conclusion: The BLE supplementation at 1.3 g/kg DM could improve production performance and rumen fermentation in dairy cows during heat stress.

• The Mathematical Education
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• v.61 no.4
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• pp.521-537
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• 2022

The unprecedented COVID-19 pandemic has disrupted, interrupted, and changed the way we normally prepare our teacher candidates in teacher preparation programs. In this paper, we, two mathematics teacher educators (MTEs), reflect our own experiences in appropriating, transforming, reconstructing, and modifying our pedagogies of teacher education in making a transition from face-to-face to online environment during the COVID-19 pandemic. Using a collaborative self-study, we discussed issues, challenges, changes, opportunities, and innovations of teaching an elementary mathematics methods course in the online environment. Using a constant comparison method, we explored the following three themes: (1) using virtual manipulatives; (2) creating collaborative, interactive, and shared learning experiences for preservice teachers; and (3) making preservice teachers engaged in student thinking. These findings indicated that online teaching requires transformative knowledge for teacher educators. Transferring face-to-face to online is not a simple matter of putting the existing content to online; it should focus on pedagogical improvement in teaching mathematics rather than technology's sake or how it can be repurposed in a new online environment in a way that students' learning is optimized. The findings of this study provide implications for unpacking MTEs' technological pedagogical content knowledge (TPACK), creating collaborative learning experiences for preservice teachers, and designing a collaborative self-study between MTEs engaged in the community of professional learning.

• Journal of Appropriate Technology
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• v.6 no.2
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• pp.115-125
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• 2020

Housing issues such as mushrooming slums remain as chronic in most developing countries. Due to the state's restrained capacity, the housing-vulnerable's self-help approaches have been increasingly inevitable and vital for addressing the housing issues. However, there are still two challenges: securing good quality with economic efficiency, and climate change mitigation and adaptation. This study aims at doing an architectural experiment by developing and educating the production of eco-friendly interlocking stabilized soil bricks (ISSB) by employing vernacular materials and technologies for housing-vulnerable communities in Indonesia. In collaboration with a local architectural NGO, the study features a co-creation workshop in which 40 evicted households participate in the whole process. Soil analysis, mixed design, compression tests, and economic analysis are carried out. This paper illustrates that ISSB also has a high potential as an alternative to a burned brick or a cement block. The application of ISSB to self-help housing is expected to have socioeconomic and environmental effects, thereby facilitating the housing-vulnerable's self-help approaches and contributing to addressing the housing challenges in Indonesia.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.8 no.7
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• pp.861-871
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• 2018

This study aims to explore the cultural contact experience of the Vietnamese Marriage Immigrant's between Vietnamese and Korean culture which is based on the traditional holidays. In order to achieve the goal of this study, this study was conducted by case study method and the data collection was conducted through in - depth interviews with 7 Vietnamese marriage immigrant women. The results of the study are as follows. While Vietnamese married immigrant women have become familiar with Korean culture by experiencing Korean culture while experiencing their own culture, they are experiencing a lot of conflicts due to cultural differences between their home country and Korea. However, they were able to confirm their aggressive adaptation in their domestic and social environments through their experience of traditional Korean festivals. Based on these findings, this study proposes the following suggestions for successful immigrant marriage immigration. First, for a harmonious family life in a Vietnamese multicultural families, it is not a one-way education for married immigrant women, but a mutual culture Education should proceed. Second, marriage immigrant women expressed the feeling that they did not feel family bond and communication in the holiday place. Therefore, it is necessary to acquire the function of traditional festival that promotes the bond of community with more specific programs and events related to traditional festivals do.