• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.16 no.8
• /
• pp.2507-2528
• /
• 2022

Blockchain interoperability, which refers in particular to the ability to access information across blockchain systems, plays the key role for different blockchains to communicate with each other, and further supports the superstructure built on top of the cross-chain mechanism. Nowadays, blockchain interoperability technology is still in its infancy. The existing cross-chain scheme such as BTCRelay requires that the smart contract in a blockchain to download and maintain block headers of the other blockchain, which is costly in maintenance and inefficient to use. In this paper, we propose a supervision mechanism between blockchains, called Surveillant. Specially, the new entities called dual-functional nodes are introduced to commit the real-time information from the blockchain under supervision to the supervising blockchain, which enables users to have efficient cross-chain verification. Furthermore, we introduce Merkle mountain range for blocks aggregation to deal with the large-scale committing data. We propose the design of long orphan branch counter to trace the bifurcations in the blockchain under supervision. The existing incentive mechanism is improved to encourage the behaviors of dual-functional nodes. In Surveillant, the analysis and experimental results demonstrate that users are able to have efficient cross-chain verification with low maintenance overhead.

• Journal of the Korean Home Economics Association
• /
• v.48 no.3
• /
• pp.1-13
• /
• 2010

We investigated the effects of maternal parenting behaviors, children's emotional regulation, and stress coping strategies on gender-specific children's behavioral problems. The participants were 191, $4^{th}$ and $5^{th}$ graders and their mothers from four elementary schools in Seoul and Kyung-gi province. Collected data were analyzed by descriptive statistics and hierarchical regressions. The major findings were summarized as follows: (1) Active coping strategies explained boys' aggressive behaviors, (2) mother's warm-encouragement parenting behaviors and active coping strategies explained boys' delinquent behaviors, (3) mother's warm-encouragement parenting behaviors explained boys' withdrawn behaviors, and (4) mother's mediation-supervision parenting behaviors and negative emotionality explained girls' aggressive behaviors. In conclusion, maternal parenting behaviors, children's emotional regulation and stress coping strategies have gender-specific influence on children's behavioral problems.

• Journal of the Korean Home Economics Association
• /
• v.48 no.2
• /
• pp.13-22
• /
• 2010

This study explored mediating effects of children's emotional regulation between maternal parenting behaviors and children's aggressive/prosocial behaviors. The participants were 1,187 4th, 5th, 6th grade children and their mothers from two elementary schools in Korea. The Maternal Parenting Behaviors Scale(Kim, 2006), the Emotional Regulation Scale(Lee, 1997), and a peer-nomination measure(Crick, 1995; Crick & Grotpeter, 1995) were used. Collected data were subjected to descriptive statistical analysis, Pearson's productive correlation and regression using SPSS(Ver 12.0). Findings revealed that children's self-emotional regulation mediated the effects of mother's physical punishment on children's aggressive behaviors, while children's other-emotional regulation mediated the effect of mother's warm-encouragement, mediation-supervision, and inconsistency on children's prosocial behaviors. In conclusion, children's emotional regulation mediates the effects of maternal parenting behaviors on children's aggressive/prosocial behaviors.

• Human Ecology Research
• /
• v.52 no.5
• /
• pp.495-507
• /
• 2014

The purpose of this study was to explore the general tendencies of major variables and sex differences and to analyze the variables that affect delinquency and aggression. The protective factors considered in this study included parental education participation, parental supervision, and peer attachment, and the risk factors were academic stress and delinquency experiences of peers. The main results of this study are as follows: firstly, academic stress and parental education participation was slightly low, but parental supervision was high. Further, peer attachment showed a very high score. Delinquency experiences of peers, delinquency, and aggression of adolescents were extremely low. Secondly, the correlation of parental education participation, parental supervision, and peer attachment was negatively related to adolescent delinquency, but the delinquency experiences of peers were positively related to adolescent delinquency. The same results were obtained in the case of adolescent aggression. Further, academic stress was negatively related to adolescent aggression. Finally, hierarchical regression revealed that the variables explaining the juvenile delinquency were parental education participation, peer attachment, and delinquency experiences of peers. Adolescent aggression was explained by sex, academic stress, parental education participation, and the delinquency experiences of peers. In particular, more attention is needed for girls. Various interventions should be provided to prevent problem behaviors.

• Journal of East-West Nursing Research
• /
• v.13 no.2
• /
• pp.130-137
• /
• 2007

Purpose: This study aimed to identify the safety perception and behaviors of mothers with school age children. Method: The subjects were 265 mothers of third graders in one elementary school located in metropolitan Seoul area. Framingham safety survey were used to guide the development of a self administered questionnaire for mothers. The questionnaire were sent home at school and the children returned them to their class teachers. Results: Among 265 mothers, 62 mothers (23.4%) had experience of visiting hospitals because of accidents and 201 mothers (75.8%) had no opportunities on safety education. Mothers with education higher than high school graduation showed more safety behaviors. Also, mothers having the experience of safety education showed higher scores on safety behaviors and mothers with the experience of hospital visits related to accidents showed low scores on safety behaviors. In the practice of safety behaviors, it showed high score to the traffic safety, followed by the home safety, child supervision, the safety from fire and explosion, the safety from electric devices, the safety from burn, and the safety from medicines. Conclusion: Mothers' overall practice on safety were poor. Based on these results, it is necessary to provide more safety education for mothers with school age children.

• Korean Journal of Agricultural Science
• /
• v.25 no.1
• /
• pp.33-40
• /
• 1998

The purpose of this study is to suggest objective basic data for Kung-dong neighborhood park management through the quantitative analysis of user's behaviors and satisfaction in Chungnam National University campus forest. Most users lived in Kung-dong, Oun-dong, Shinsung-dong near the campus forest. Their visiting motivations were for taking a walk, health and fresh air. Therefore, it is important that the university should seek a supervision for improving functions of the campus forest. They are using about 300 users per day in campus forest. We should present a supervision programs which make them more useful and protective.

• Korean Journal of Human Ecology
• /
• v.21 no.4
• /
• pp.665-678
• /
• 2012

The purposes of this study were to explore the gender differences in children's social competence, emotional regulation and maternal parenting behaviors, and to investigate differences between boys and girls in the interrelationships between these kinds of variables. The participants were 214 children in 4 to 6 grades and their teachers from one elementary school in Seoul. The data were analyzed using descriptive statistics, t-test, Pearson's correlations, and multiple regressions. The results were as follows: There were statistically significant gender differences in the children's social competence, emotional regulation and maternal parenting behaviors. Children's negative emotion explained boys' and girls' peer social skills, frustration tolerance, and task orientation. Children's positive emotion regulation explained boys' and girls' peer social skills, assertive social skills, and task orientation. Boys, who perceived less maternal supervision, displayed less assertive social skills and task orientation.

• Korean Journal of Child Studies
• /
• v.30 no.5
• /
• pp.103-117
• /
• 2009

This study examined patterns of delinquent behavior trajectory from late childhood to early adolescence and examined relationships between patterns of trajectory and individual, family, and school factors. Youth delinquent behavior trajectories were examined by mixed growth models using data from the 2nd to 5th year surveys of the Seoul Panel Study of Children. Relationships between patterns and effect factors were examined by multinominal logit models. Four patterns emerged: non-delinquency (80%); rapidly accelerating delinquency (3.3%); decelerating delinquency (6.0%); and moderately accelerating (10.7%) groups. Contacts with a delinquent peer group had persistent effects on more serious delinquent behavior trajectories. Increased levels of self-esteem and school achievement prevented increase in delinquent behaviors; close relationships with parents and parental supervision caused decrease in delinquent behaviors.

• Journal of the Korean Home Economics Association
• /
• v.49 no.1
• /
• pp.67-78
• /
• 2011

The purposes of this study were to explore the differences in maternal parenting behaviors, parents' conflict, social support, and social competence according to boys' and girls' depression level. The participants of this study were 150 children of 4 to 6 grades and their teachers from one elementary school in Seoul. The data were analyzed using descriptive statistics and t-test. The result were as follows: Firstly, depressive boys perceived less maternal warmth and more parents' conflict than non-depression group. And boys of depression group had less task orientation than non-depression group. Secondly, depressive girls perceived less maternal warmth, supervision, and parents' support, and more parents' conflict than non-depression group. And girls of depression group were rated having less peer social skills, frustration tolerance than non-depression group by teachers.

• Journal of the Korean Geotechnical Society
• /
• v.29 no.1
• /
• pp.149-159
• /
• 2013

This paper deals with behaviors of Poisson's ratio with water content through uniaxial compressive strength against 307 individual rock cores, which are classified into sedimentary, igneous and metamorphic rock. Poissons' ratio demonstrates independent behaviors and does not correlate with mechanical and physical parameter of rocks. The water content behavior of Poissson's ratio represents decrease, increase and random style. Rock samples with decreasing behavior demonstrate absolute preponderance above the 70% level. As Poisson' ratio shows independent behaviors, it should be considered based on experimental results of in-situ rock in the process of design, construction, and supervision.