• Journal of Families and Better Life
• /
• v.29 no.5
• /
• pp.75-83
• /
• 2011

The purpose of this study was to examine the variables that influence paternal parenting behavior. 160 fathers of five-year old preschoolers(85 boys and 75 girls) were recruited from 8 daycare centers located in Seoul, Korea and answered the questionnaire on the subject of attachment experience with their parents of origin based on their retrospective memories, marital satisfaction, spouse's gatekeeping, and their own parenting behavior as fathers cohabiting with their children. Data were analyzed through frequencies, an independent sample t-test, Pearson's correlations, the stepwise regression analyses using SPSS 15.0. The findings are as follows. First, there was no statistically significant difference in paternal parenting behavior according to children's gender. Second, marital satisfaction and attachment experience with their own mothers in childhood influenced all five subcategories of paternal parenting behavior(parental involvement, limit setting, responsiveness, reasoning guidance, intimacy) and spouse's gatekeeping influenced father's reasoning guidance and intimacy. Unexpectedly, attachment experience with their own father had no impact on any subcategories of paternal parenting behavior.

• Journal of Biosystems Engineering
• /
• v.15 no.2
• /
• pp.79-87
• /
• 1990

An automatic guidance system based upon two position-measurement systems was designed to record where the tractor traveled and to guide the tractor along the predetermined path. An algorithm, using the kinematic behavior of tractor movement, was developed to determine the steering angle to reduce lateral position error. The algorithm was based upon constant travel speed, constant steering rate, and zero slip angles of the tractor wheels. The algorithm was evaluated through use of computer simulation and verified in field experiments. Results showed that the distance interval between position measurements was an important factor in guidance system performance. The position-measurement error of the guidance system must be less than 5 cm to be acceptably precise for field operations. An algorithm based upon a variable steering rate might improve the stability of the guidance system. More accurate measurement of tractor position and yaw angle, and faster error processing are required to improve the field performance of the guidance system.

• Journal of Korean Library and Information Science Society
• /
• v.4
• /
• pp.91-111
• /
• 1977

The view point of the library is treated as a first subject. This study is scheduled to construct, as a experimental study, the system of the Library Science. The study of this fields is called upon greatly because the trial to understand library as a socio-cultural phenomenon did not study as many times. As a result of the study, library is defined as ${\ulcorner}Structural Formation of Inquirying Behavior{\lrcorner}$. Not only technique and actual proof are possible in this study but also this definition is technical definition to indicate the main phenomenon of Librarial Behavior. This schedule represent the trial to define Library Behavior which could anticipate and fabricate when we analyze this definition First, we can find out, first of all, the researching behavior among the human behaviors and then human behavior has the condition of practice. At last, researching behavior can not have any result when it is a natural situation, it has only the meaning when it is guided by an obvious intention. The object of the library is just this human behavior. Second, Formation permits the guidance and self-control at the same-times. The answer about what we find out and practice make it possible the act of guidance. This guidance can't burden any subject but permit the people to result his own researching behaviors. He can save his activities, his own researching behaviors by the result of it. Third, The statematical means efficient performances, and them efficient performances is impossible, here is 'discoveries' of behavior itself. The system of the library is the formation of the relation between the accumulated civilizations and accumulated civilizations. As the definitions of the above mentions, library has the big abilities to the creation and succession of the civilization. As the contemporary view-points, there are some questions about the above described definition can meet it of the library. When we frame the science of library as the learning systems, we can't but the library as this definitions.

• The Korean Journal of Community Living Science
• /
• v.18 no.3
• /
• pp.379-390
• /
• 2007

The purpose of this study was to examine the effect of father's child rearing behavior and child rearing involvement perceived by their children to children's self-esteem and school adjustment. The subjects were 300 elementary school children selected from two elementary schools in Incheon area. The instruments included the father's child rearing behavior index, father's child rearing involvement index, children's self-esteem inventory, and children's school adjustment inventory. The statistics used from this data were correlation analysis and multiple regression analysis. This study showed that father's child rearing behaviors of autonomy, achievement, concern and affection behavior were positively correlated to children's general, social, family and school self-esteem. Correlation analysis also indicated that a father's child rearing involvement, that is family activities, day to day guidance, household affairs and home education involvement were positively correlated to children's general, social and family self-esteem, and school self-esteem was positively correlated to family activities and day to day guidance involvement. Father's child rearing behaviors also indicated positive correlations with children's teachers, friends, studies and rule adjustments. A father's child rearing involvement also indicated positive correlations with all of the schools adjustment variables. The relationships between children's self-esteem and school adjustment indicated positive high correlations in all sub-variables. It was also found that autonomy behavior, family activities involvement, affection behavior and concern behavior were significant predictors of children's self-esteem. Also, day to day guidance involvement and family activities involvement were significant predictors of children's school adjustment, but in addition to children's self-esteem variables, children's social, school, general, and family self-esteem were significant predictors of children's school adjustment.

• Journal of the Korean Home Economics Association
• /
• v.42 no.4
• /
• pp.167-177
• /
• 2004

The purpose of this study was to examine the relations of peer competence to children's interpersonal problem solving skills and mothers' parenting behavior. The subjects were 88, 6-year-old children and their mothers. Instruments used included the Peer Competence Scale, PIPS, and the revised version of IPBI. The data were analyzed with Pearson correlations, partial correlations, and stepwise regression. Children's sociability was explained mostly by mothers' intimacy-reasoning guidance, parental involvement, and children's positive alternative Solutions. Children's prosocial behavior was explained mostly by mothers' intimacy-reasoning guidance and children's positive alternative solutions. Children's leadership was explained most by mothers' involvement and Omit selling in parenting.

• International Journal of Aeronautical and Space Sciences
• /
• v.12 no.1
• /
• pp.16-23
• /
• 2011

In this paper, nonlinear model predictive control (NMPC) is addressed to develop formation guidance for multiple unmanned aerial vehicles. An NMPC algorithm predicts the behavior of a system over a receding time horizon, and the NMPC generates the optimal control commands for the horizon. The first input command is, then, applied to the system and this procedure repeats at each time step. The input constraint and state constraint for formation flight and inter-collision avoidance are considered in the proposed NMPC framework. The performance of NMPC for formation guidance critically degrades when there exists a communication failure. In order to address this problem, the modified optimal guidance law using only line-of-sight, relative distance, and own motion information is presented. If this information can be measured or estimated, the proposed formation guidance is sustainable with the communication failure. The performance of this approach is validated by numerical simulations.

• Korean Journal of Child Education & Care
• /
• v.18 no.4
• /
• pp.187-197
• /
• 2018

Objective: The purpose of this study was to investigate relationship between teacher's emotional intelligence, consciousness of professionalism, and strategies of problem behavior guidance of early childhood. Methods: The subjects in this study were 237 childcare center teachers in Seoul and Gyoungi Province in South Korea. Three different inventories were utilized. As for data analysis, the frequency analysis, reliability analysis, correlation analysis, and Multiple Regressions were conducted through SPSS 21.0 program. Results: The findings of the study were discussed as follows. First, emotional intelligence of teacher had the relationship with strategies of problem behavior guidance of early childhood. Second, consciousness of professionalism of teacher had the relationship with strategies of problem behavior guidance of early childhood. Conclusion/Implications: First, The findings showed that as teachers had the high level of ability in recognizing and expressing their emotion preciously, so the elements triggering the situation of problem were identified and captured, and the ability of use of preventive strategies in advance increased. Second, The findings showed that as teachers had the high level of ability in recognizing and expressing their emotion preciously, so the elements triggering the situation of problem were identified and captured, and the ability of use of preventive strategies in advance increased.

• International Journal of Precision Engineering and Manufacturing
• /
• v.2 no.3
• /
• pp.61-68
• /
• 2001

A linear motor has a lot of advantages in comparison with conventional feed mechanisms: high transitional speed, acceleration, high control performance and good positioning at high speed. Through the omission of a power transfer element, the linear motor shows no wear and no backlash, has along lifetime and is easy to assemble. Recently, the two types of linear motors, asynchronous and synchronous linear motors, are often applied to machine tools as a fast feed mechanism. In this paper, a comparison between the two types of linear motors as to power loss and thermal behavior is made. The heat sources of the linear motor-the electrical power loss in the motor and the frictional heat on the linear guidance-are measured and compared. Also, the temperature on the linear motor and machine structure is measured and presented.

• Korean Journal of Human Ecology
• /
• v.13 no.6
• /
• pp.861-874
• /
• 2004

The goal of this study is to investigate the relationship between maternal rearing behavior characteristics and elementary school children's Internet use, and to utilize the results as the basic data to develop a program, in which parents learn how to educate their children for better use of the Internet. The subjects were 713 children whose grade are in fourth through sixth in an elementary school. Data were obtained with questionnaires. The instruments employed were Children's Internet Use and Addiction, and maternal rearing behavior characteristics-Rational Guidance, Affection, Authoritarian Control, Overprotection, Achievement Encouragement, and Active Involvement-Scales. The data were analyzed with the SPSS program. They were analyzed by Frequency, Percentage, ANOVA, Duncan's test, and Pearson correlation. The results of this study are as follows: First, 30.2% of the subjects has used Internet for more than three years. 55.6% of the subjects spend less than an hour per day in using the Internet. The two major types of Internet use were playing games(49.9%) and sending e-mails(25.4%). The main reason for playing Internet games was escape from stress(34.7%). 34.5% of the subjects also said that their parents usually encourage them to use the Internet. Second, maternal affection, authoritarian control, and active involvement were significantly different in the types of Internet use. Maternal authoritarian control and overprotection were significantly different in the reasons of doing Internet game. The rational guidance and active involvement of mothers were correlated negatively with children's Internet using time, but their authoritarian control and overprotection were correlated positively with children's Internet using time. Maternal overprotection was correlated positively with parents' encouragement level in the Internet use. Third, the rational guidance, affection, and active involvement of mothers were correlated negatively with children's Internet addiction. In the other hand, maternal authoritarian control and overprotection were correlated positively with children's Internet addiction. Lastly, children's Internet addiction was significantly different by the types of Internet Use and the reasons for doing internet game. Children's Internet using time was correlated positively with children's Internet addiction.

• Fire Science and Engineering
• /
• v.25 no.5
• /
• pp.100-107
• /
• 2011

In this study, a simulated situation in which the visions of the evacuees were blocked by the smoke, which is one of the most dangerous factors that cause casualties in case of an emergency, was conducted for the evaluation of the performance of an evacuation guidance system. For this purpose, the behavior and time taken by the experiment subjects in simulated evacuation test were measured and analyzed. When the evacuation guidance sound signals were given by 4 speakers at the same time, most of the subject were disoriented and took generally longer in getting to the pre-designated evac point. And, using only one speaker instead of two showed a better result in terms of the evacuation behavior or and orientation. Also, when there were two or more speakers used for the broadcasting of the guidance message, it turned out that using Hass effect, and placing the speakers closer, could result in higher awareness of the guidance message and maintenance of the orientation, while it also made the subjects took short to get to the evac point.