• Korean Journal of Child Studies
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• v.26 no.5
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• pp.205-216
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• 2005

This study investigated aspects of caregiver's input relating to the early development of nouns and verbs. Subjects were 34 Korean-Chinese children in Yanji, China. At 1 year of age each child's spontaneous speech during interaction with his/her caregiver was videotaped for about 30 minutes. The children's spontaneous utterances were transcribed and coded on the lexical level(nouns and verbs) and the pragmatic level. Children's speech was recorded, transcribed and coded again at 2 years of age. Results showed that children used more verbs when they were older; there were no differences between the two ages in mother's pragmatic utterances but when they were two-years-old children used more actionoriented utterances and object-described utterances. Mother's input was related to children's pragmatic utterances.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.1
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• pp.65-70
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• 2013

In this paper, we propose the construction of Raptor code using LDGM code instead of LDPC code as precode. To see their merits, the simulations are done. The results show that the performance in case of using LDGM code is worse than that of using LDPC code as precode, and the complexity of encoding LDGM code is lower than that of LDPC.

• Journal of the Korean Home Economics Association
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• v.43 no.9 s.211
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• pp.109-127
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• 2005

The present study examined the relationships among maternal attachment, self-concept, peer relationship, and school adjustment. The subjects were 293 Korean-Chinese elementary school students living in Yanji and Shenyang, China. The Inventory of Parent and Peer Attachment (Armsden & Greenberg, 1987), Social Competence Inventory(Doh & Falbo, 1999), and Self-Perception Profile for Adolesents(Harter, 1988) were used to measure the subjects' maternal attachment, and peer relationship, school adjustment, and self-concept, respectively. When structural equation modeling was applied, the results supported not only the model that maternal attachment and self-concept exert an influence on peer relationship, but also the model that they exert an influence on school adjustment. The results of this study suggest that the secure maternal attachment of Korean-Chinese works as an important mechanism that explains their peer relationship and adjustment at elementary school.

• Korean Journal of Child Studies
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• v.27 no.2
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• pp.1-14
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• 2006

This study examined the spontaneous utterances of 20 1-2 year old Korean-Chinese children in Yanji, China by videotaping their spontaneous natural speech during interaction with his/her caregiver for 30 minutes on 4 separate occasions. Utterances were transcribed and coded by nominative and accusative case markers; then analyzed by grammatical functions. Results showed that the order and pattern of the acquisition of the case marking system of Korean-Chinese bilinguals differed from that of Korean monolinguals. Bilinguals used the accusative marker -lul earlier than the nominative marker-ka and overextended the accusative marker more often than the nominative marker. These results are consistent with those of Gathercole (in press) who found that bilingual children differed from monolinguals in mastering grammar.

• The Korean Journal of Community Living Science
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• v.17 no.3
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• pp.3-14
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• 2006

The purpose of this study was to investigate the relationship between conversational function and question type in mothers' utterances and their infant's language development. The subjects were 20 infants from 1;07 to 1;11 years of age in Yanji, China. Each child's spontaneous natural speech during interaction with his/her mother was videotaped for about 30 minutes. The children and their mother's spontaneous utterances were transcribed and coded for the number of type and token of word, grammatical morpheme conversational function and type of question in mother's language input to her child. The result showed that mothers used questions as the most frequent conversational function with their infants. The number of questions in conversational function in mothers' utterances positively correlated with the type of word, type of morpheme and grammatical morpheme in infants' utterance. However, there was no correlation between mothers' language input and infant early language development.

• Korean Journal of Child Studies
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• v.25 no.5
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• pp.163-178
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• 2004

The hypothesis was tested that children whose families differ in socioeconomic status(SES) and educational level differ in their rates of productive language development because they have different language-learning experiences. Naturalistic interaction between mothers and their children was video taped. Transcripts of these interactions provided the basis for estimating the growth in children's productive vocabularies and properties of maternal speech. The sixty children from age 1 to 3 were selected in Yanji, China. The results show that the high educated mothers' children grew more than the low educated mothers' children in their mean length of utterances. Properties of maternal speech that differed as a function of mother's educational level fully accounted for this difference. Implications of these findings for mechanisms of environmental influence on child development are discussed.

• Korean Journal of Child Studies
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• v.24 no.4
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• pp.55-69
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• 2003

This study analyzed the contents of reading textbooks of Chinese-Korean $1^{st}$, $4^{th}$, and $7^{th}$ graders in Yanji, China with reference to ecological systems and values. Results showed that the literature genre of Korean textbooks in China was predominantly novels/stories(38.5%) rather than essays(13.7%), poems/verses/rhymes(16.2%) or others(31.6%). Characters were classified into 9 categories and analyzed by Bronfenbrenner's ecological paradigm. It was found that Chinese-Korean textbooks included more characters belonging to exo- or macro-systems including school, community, and government while Korean textbooks emphasized the self or the family, both belonging to the micro-system. Values in Chinese-Korean textbooks emphasized community and government. Korean textbooks emphasized individual life. Differences were more pronounced in textbooks of the upper grades.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.11
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• pp.4145-4162
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• 2021

During the period of epidemic prevention and control, contact tracing systems are developed in many countries, to stop or slow down the progression of COVID-19 contamination. However, the privacy issues involved in the use of contact tracing apps have also attracted people's attention. First, we divide contact tracing techniques into two types: Bluetooth Low Energy (BLE) based and Global Positioning System (GPS) based techniques. In order to clear understand the system structure and its elements, we create data flow diagram (DFD) of each types. Second, we analyze the possible privacy threats contained in various types of contact tracing apps by applying LINDDUN, which is a threat modeling technique for personal information protection. Third, we make a comparison and analysis of various contact tracing techniques from privacy point of view. These studies can facilitate improve tracing and security performance to contact tracing apps through comparisons between different types.

• Journal of Food Hygiene and Safety
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• v.37 no.5
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• pp.323-327
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• 2022

The mineral content of Tricholoma matsutake was evaluated for comparison of mineral contents according to the area of cultivation. Ten domestic and thirty Chinese (10 Yanji, 10 Yunnan and 10 Tibet) T. matsutake specimens were assessed using an atomic absorption spectrophotometer (AAS) and inductively coupled plasma mass spectrometer (ICP-MS). The Na, Mg, K, and Ca contents of domestic T. matsutake were 128.12±85.25 mg/kg, 218.52±105.35 mg/kg, 7,534.58±2,691.52 mg/kg, and 17.69±7.14 mg/kg, respectively, while those of Yanji T. matsutake were 124.89±57.24 mg/kg, 64.07±27.52 mg/kg, 1,439.18±311.04 mg/kg, and 10.88±4.52 mg/kg, respectively. The Na, Mg, K, and Ca contents of Yunnan T. matsutake were 90.78±23.23 mg/kg, 77.40±28.36 mg/kg, 1,446.29±126.33 mg/kg, and 28.42±5.18 mg/kg respectively, while those of Tibet T. matsutake were 143.50±41.54 mg/kg, 124.64±50.18 mg/kg, 3,530.95±2,714.99 mg/kg, and 21.05±8.71 mg/kg, respectively. The Cu contents of domestic, Yanji, Yunnan, and Tibet T. matsutake were 105.43±32.97 mg/kg, 19.92±8.95 mg/kg, 54.51±16.91 mg/kg, and 64.80±23.01 mg/kg, respectively. Both domestic and Chinese T. matsutake samples showed significantly different K, Mg, and Cu levels in this study. Therefore, a comparative evaluation of the K, Mg, and Cu contents of multiple domestic and Chinese T. matsutake varieties is needed to determine the appropriate area of cultivation in the future.

• Journal of Distribution Science
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• v.13 no.2
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• pp.95-104
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• 2015

Purpose - This is a comparative study of the market development and characteristics of Ulsan in South Korea, Fukuoka in Japan, and Yanji in China, which are major East Sea Rim cities with adjacent areas of similar natural characteristics of the sea and the country. Particularly, it considers these aspects while focusing on the evolution of networks that appear in the distribution system and at the same time examining the institutions of market activation and regulations that are handled by the central and the local government and the changing logistics due to the development of transportation and the concern of food safety, using a meso-analysis approach. Research design, data, and methodology - The study used a historical and comparative approach with a focus on case studies. It made use of various materials such as local newspaper articles, reports, literature, interviews with experts, discussions with local merchants, discussions with customers, and so forth. Results - In the case of Fukuoka, from the 1960s, due to the entry of supermarkets, supermarkets expanded and they have now come to a dominant market position in the current market. They offer a convenient and comfortable environment while providing a large mall offering a variety of educational and cultural activities for customers to meet the customers' needs, such as the preferences of Korean tourists, who appear to prefer Japanese foods. The Fukuoka City Central Wholesale Market has been exporting fruits and vegetables as well as seafood products to Korea, China, and so forth. In the case of Ulsan, as in the early 2000s, due to the expansion of supermarkets, the traditional markets have been shrinking and further, the modernization of traditional markets was conducted under the auspices of the Small Business Administration. In addition to the large discount malls, the expansion of SSM is expected to further drive the small trader bay. Shopping malls, department stores, and traditional markets contend with each other in Yanji, China, but a large number of citizens appear to prefer traditional markets and imported milk in the supermarket after the melamine scandal in China. Recently, the WanYuan (萬源) wholesale market has been partially completed and made an attempt to become a logistics hub in Northeast Asia. Conclusions - For the development of Korea's retail industry, it is important to offer the government with proposals regarding desired regulation. On the other hand, in order to enable the business of traditional markets, it requires an association for cultural tourism. At present, it would be better to provide a venture fund for the youth rather than infrastructure support. This study emphasizes the importance of institutions and policy to develop networks in the East Sea Rim. Future studies should conduct a survey on customers, managers, and merchants more carefully and systematically to understand the market situation while considering the size of the city and its evolution of markets, as well as policies and institutions.