• Bulletin of the Korean Chemical Society
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• v.11 no.2
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• pp.150-154
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• 1990

The structures of $Tl_{12-2x}Zn_x-A$ (x = 4.3 and 3.25), vacuum dehydrated zeolite A with all $Na^+$ ions replaced by $Tl^+$ and $Zn^{2+}$ as indicated, have been determined by single-crystal X-ray diffraction techniques in cubic space group Pm3m at 21(1) $^{\circ}C$ (a=12.100(2) ${\AA}$ for $Tl_{3.4}Zn_{4.3}-A$ and a=12.092(2) ${\AA}$ for $Tl_{5.5}Zn_{3.25}-A$). The crystals of $Tl_{3.4}Zn_{4.3}-A$ and $Tl_{5.5}Zn_{3.25}-A$ were prepared by flow method using exchange solutions in which mole ratios of $TlNO_3$,/TEX> and $Zn(NO_3)_2$ were 1:50 and 1:1, respectively, with total concentration of 0.05 M. The structures of the dehydrated $Tl_{3.4}Zn_{4.3}-A$ and $Tl_{5.5}Zn_{3.25}-A$ were refined to yield the final error indices $R_1$ = 0.075 and $R_2$ = 0.075 with 236 reflections, and $R_1$ = 0.057 and $R_2$ = 0.064 with 202 reflections, respectively, for which I > 3$\sigma$(I). Both structures indicate that Zn(II) ions are coordinated by three framework oxygens: the Zn(II) to O(3) distances are 2.08(1) ${\AA}$ for $Tl_{3.4}Zn_{4.3}-A$ and 2.07(1) ${\AA}$ for $Tl_{5.5}Zn_{3.25}-A$, respectively. In each structure, the angle subtended at Zn(II), O(3)-Zn(II)-O(3) is 119.9(3)$^{\circ}$ for $Tl_{3.4}Zn_{4.3}-A$, and 120.0(3)$^{\circ}$ for $Tl_{5.5}Zn_{3.25}-A$, respectively, close to the idealized trigonal-planar value. Zn(II) ions prefer to 6-ring sites. $Tl^+$ ions do not have any preference to a particular site but occupy simultaneously both at the 6-ring sites and 8-ring sites.

• (The)Korea Educational Review
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• v.18 no.1
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• pp.253-281
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• 2012

This qualitative study explores how Mongolian migrant workers, with a marked tendency for family migration, plan and put into practice their child's education and attach meaning to it in relation to the social network they form during their stay in Korea. Specifically, it analyzes in particular ways the social network Mongolian migrant workers form affect their settlement in Korea, the process by which the social network affects their planning of their child's education, and how the education planning and its realization lead to the formation of new social networks. The results show that parents were divided between those who made a deliberate decision in sending their child to the Seoul Mongol School as a part of their plan and those who chose the school due to forced circumstances. While some parents preferred the Seoul Mongol School over regular Korean schools for their child's education and future, others sent their child to the Seoul Mongol School, regardless of their preference, because they did not have access to information about regular Korean schools, were afraid of divulging their illegal status, or were afraid their child would not be able to adjust to the school life in Korean schools. Based on such analysis, this paper stresses the urgency of further research in this area, and suggests direction for future policy measures.

• International Area Studies Review
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• v.21 no.4
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• pp.173-194
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• 2017

The research study conducted logistics regression analysis through HLM (Hierarchical Linear Modeling) and presented the value of the outcome in order to investigate characteristic factors of demanders which influence the intention to move into public rental housing. (1) The results of the regression analysis of characteristic factors of household and housing were analyzed as having the significant effect on the intention to move in public rental housing, according to residents moving in monthly rent housing, residents' occupations, rental housing, the number of household, the location of surrounding public rental housing, monthly average income, children's educational level, the number of children, the types of housing and one's own house, in order, out of the types of housing tenure. (2) The results of the regression analysis of characteristic factors of the conditions of location were analyzed that out of the conditions of location of the top five areas in public rental rates, what influences significant effects on the intention to move in public rental housing is the location of surrounding rental housing, income, the number of household and children, children's educational level, job state, housing types, ones' own house, rent housing, monthly rent housing, in order. (3) In case of Seoul, Expanding public rental housing is inevitable in order to stabilize ordinary people's housing stability, owing to the high and rental prices of private housing. Nevertheless, an accurate analysis of the intention to move in public rental housing has not been conducted. Eventually, the research was, thus, conducted, based on the fact that the preference on public housing is low. According to the analytic results of the study, it is required for the government institutions and agencies should consider individual and local characteristics and provide an alternative that meets the real situation, in order to help ordinary citizens with low incomes stabilize housing.

• (The) Korean Journal of Educational Psychology
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• v.26 no.4
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• pp.1225-1248
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• 2012

The present study explored how ADHD assessment, identification, and diagnosis were conducted in research through an overview of research papers on ADHD in the last 10 years. The collected studies were categorized and analyzed by topics including data collection settings, assessment and identification, coexistence with other disabilities, considerable variables throughout evaluation, and biological basis. They were categorized and analyzed according to the identification methods, the number of assessment(s) and the number of informant(s). The results were as follows: First, the assessment and identifying studies on children with ADHD were excessively biased toward clinical settings. Second, the majority of the previous studies explored more the development or validation of tools for the assessment and identifying of ADHD than the other topics. Finally, a high preference for the use of a multiple assessment method in identifying ADHD was found. However, considering methodological aspects, there was a lack of practical application of multi-step process such as including a personal interview, reviewing school records or direct observing rating criteria. Considering these results, we discussed an urgent need for the diagnosis and identification guidelines of ADHD for teachers to effectively identifying ADHD children at schools. The implications of school-based ADHD assessment and diagnosis research were suggested.

• Journal of The Korean Association For Science Education
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• v.41 no.2
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• pp.171-181
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• 2021

The purpose of the study is to explore the personal experiences and efforts of science teachers, who have worked in science core schools over the years, in order to evaluate the educational effects and implications of science core school policies. To achieve this purpose, we conducted semi-structured interviews with twelve individual science teachers who have operated programs and curriculum at science core schools. The results provided three case studies presenting how the teachers operated curriculum and how they perceived the benefits of science core schools and identified some commonalities in their experiences and perceptions through cross-case discussions. Three teachers in case studies presented different teaching orientations for science core schools, but they positively perceived its benefits and were very satisfied with the school environment and financial supports from government even though they had more burdens on work. In cross-case analysis among 12 teachers, the teachers commonly presented their passion and enthusiasm for organizing and implementing various extra-curriculum science activities. They believed that such efforts contributed to encouraging their students to consider their careers in science and engineering fields in college. And the differentiated school program has increased reputation and preference for the school from local parents and students. In addition, they felt that these efforts brought their own growth and professional development as science teachers.

• Korean Journal of Food Science and Technology
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• v.53 no.3
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• pp.321-328
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• 2021

Brownies containing whey powder (WP) with different levels of substitutions for wheat flour (0, 10, 20, 30, and 40% substitution for WP 0, WP 10, WP 20, WP 30, and WP 40, respectively) were prepared, and their properties were compared. Regarding appearance, the collapse of the sample surface noticeably started from WP 30. The moisture content was higher in samples containing WP than in the control (WP 0), and the weight of the brownie increased with WP content. As the WP amount increased, both the total and specific volumes of the brownies decreased. Regarding texture, a higher amount of WP resulted in a decrease in hardness, whereas adhesiveness increased significantly. The antioxidant activity also increased with increasing WP amount (from 35.28 to 51.47%). Regarding sensory characteristics, 20 or 30% WP in brownies increased mouth-feel properties, taste, and overall preference. Based on the above results, WP could improve the quality of brownies, and a substitution level of 20% could be the most appropriate.

• Journal of the Korea Convergence Society
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• v.12 no.6
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• pp.233-239
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• 2021

Recently, the COVID-19 virus has caused people to stay indoors longer without going out. As a result of this, people's activity decreased sharply, and their weight gained. So people became more interested in health. Home training can be an alternative method to solve this problem. Accordingly, To find out the trends of home training, we collected articles from December 1, 2019, to November 30, 2020, using the news provided by BIG KINDS, a news analysis system. We analyzed frequency analysis, relational analysis according to weighting, and related word analysis with the program using the algorithm developed by BIG KINDS. In conclusion, first, it was found that home training is led by technology and the emergence of artificial intelligence. Second, it can be assumed that people mainly do home training using content and video services related to mobile carriers. Third, people had a high preference for Pilates in the sports category. It can be seen that the number of patent applications increased as the demand for exercise products related to Pilates increased. In the next study, we expect that this study will be used as primary data for various big data studies by supplementing the research methodology and conducting various analyses.

• Phonetics and Speech Sciences
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• v.13 no.2
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• pp.27-35
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• 2021

This study investigated the status of the wh-island constraint in Seoul Korean. The syntactic movement of a wh-phrase out of an embedded sentence so as to have wide scope at LF is known to be invalid as it violates the wh-island constraint, but there have been studies in which such a movement was possible when the sentence is read with a wh-intonation. We conducted perceptual tests in which subjects were asked to select an answer after listening to each of the four types of interrogative sentences. Three of them were with 'Nugu-leul', which is an accusative form of the wh-phrase 'who' as well as an indefinite form. The fourth sentence contained the name of a person. 'Nugu-leul' and the noun were positioned in the same embedded sentence to see whether the subjects accepted a matrix scope interpretation of the wh-phrases. Response time was transformed to normalized log response time and checked to find any differences in the time taken to select the answers depending on different types of interrogative sentences. The results showed the subjects had a definite preference for the matrix scope interpretation for the sentences with a wh-intonation. The response time required to select the matrix scope interpretation was longer than for any other type of interrogative sentence. We concluded that the wh-island constraint in Seoul Korean is weak.

• Korean Journal of Environmental Biology
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• v.38 no.4
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• pp.603-610
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• 2020

The problem of increased resistance to pesticides is caused by the management of Bemisia tabaci, which depends almost entirely on pesticides, and to solve this problem, we investigated the host preference of B. tabaci among herbal plants to develop a possible attractant for alternative control methods. Experiments were conducted in greenhouse tomatoes at the National Institute of Horticultural Science and Herbal Science in Wanju-gun. Major herbal plants such as lemon balm, chocolate mint, rose geranium, and apple geranium were installed 50cm from the ground and 30cm from the top of the tomatoes, then the density of B. tabaci was investigated. As a result of examining the density of B. tabaci by the location of the herbal plants, it was found that the lemon balm location showed the highest B. tabaci density while rose geranium and apple geranium were rather avoided. These results are expected to be helpful in the development of alternative B. tabaci control methods using herbal plants including attractants, repellents, and trap plants.

• The Journal of Pediatrics of Korean Medicine
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• v.35 no.1
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• pp.122-138
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• 2021

Objectives The purpose of this study is to widely utilize the clinical practice guideline for autism spectrum disorder (ASD) by investigating parents who have children with ASD about their perception in ASD and their thoughts on Korean medicine treatment to treat ASD. Methods We conducted a survey on 'perception of ASD' and 'perception and preference of Korean medicine treatment for ASD' on the parents of 22 children with ASD (age 4-6) who visited department of pediatrics of Korean medicine at Kyunghee University Korean medicine hospital at Gangdong and Kyunghee University Korean medicine hospital. Results Of the parents, 20 (90.91%) said their children had no experience with Korean medicine treatment. Among them, 11 (35.48%) chose 'I didn't know that Korean medicine treats ASD' for the reason (multiple choice). When questioned what the worries are for Korean medicine treatment, 13 (30.95%) chose 'worries about probability of side effects of herbal medicine' as the most worrisome reason (multiple choice). On the question about the necessity of Korean medicine for the treatment of ASD, most chose 'Korean medicine treatments are necessary for children with ASD' (9, 40.91%). Conclusions It is necessary to develop a clinical practice guideline that reflects comprehensive evidence for side effects as well as the effectiveness of Korean medicine for ASD, and is necessary to promote the effectiveness and evidence-based Korean medicine treatment to patients and their caregivers through various distribution tools.