• Korean Journal of Biological Psychiatry
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• v.25 no.3
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• pp.53-59
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• 2018

Objectives The purpose of this study is to investigate the differences between a attention deficit hyperactivity disorder (ADHD) group and a general student group in terms of the perception of the residential environment and periodic activities outside the classroom. Methods The patient group consisted of 62 outpatients or inpatients at the Department of Pediatric Psychiatry, and 49 patients diagnosed with ADHD were selected. For the control group, 3727 youths in elementary schools, middle schools, and high schools of one city were asked to fill out questionnaires. Of the 1717 respondents who responded to the questionnaires, 245 were selected for a patient-controlled study. The differences between the patient group and the control group were compared using the chi-squared test (${\chi}^2$ test). Results There was a significant difference between the patient group and the control group in areas where students responded by "My neighborhood is dirty and littered (p < 0.05)". There was also a significant difference between the patient group and the control group in terms of having more than one club activity per month (p < 0.05). Conclusions It was found that the patients with ADHD are more aware of perceived negative aspects of the area in which they reside, thus reflecting their anxiety. In addition, it was also found that the patient group did not partake in as many social activities as the control group.

• Journal of Korean Academy of Nursing
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• v.15 no.2
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• pp.49-61
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• 1985

It is assumed that the more society advances in its complexity and development, the more people pay attention to their health and accordingly the more people tend to practice health protective behavior. Most of human behavior is based on social inter-actions. The concept in Locus of Control has been developed from social learning theory to help better understanding the social phenomena affecting human behavior. Multidimensional Health Locus of Control is consisted of three dimensions: Internal, Powerful Others and Chance. This study was conducted to find out the health protective behavior patterns of the people and its relationship with Health Locus of Control as an influencing factor to their behavior. All the subjects in this study were the ones of the bank employees in Seoul, Among the total of 1,430 bank employees, 761 were chosen as a sampled subjects. Questionnair survey was conducted from March 4 to March 13, 1985. Research instruments used in this study were two kinds, one was the Health Locus of Control Scale developed by Wallston & Wallston and the other was the Measuring Scale for Health Protective Behavior developed by the investigator. Analysis of data was done by using Descriptive Statistics, X²-test, t-test, ANOVA, Pearson's correlation coefficient. The results of this study are summarized as follows: The mean score of Internal was 24.1, Powerful others was 19.7 and Chance was 15.3 out of maximum range of 6-30 respectively. The mean score of Health Protective Behavior Scale fell as 53.2 out of a maximum range of 18-90. Internals were more likely closely related with sex, educational levels and religion, Powerful others were related with age, educational levels and the number of family members. Chances were related with edu cational levels. The older the subjects were, the more concerned about their health. They tended to practice more favorable health protective behaviors. Furthermore, married people tended to fay more attention to their health than single individuals. Also, the number of family members and religion affected their attitudes in the health protective behavior patterns. Internals and Powerful Others were related with health protective behaviors. If one believes he can do something about his health and others play a significant role on his health, he is more apt protective patterns more suitable for health and actually shows that he is better off.

• Journal of the East Asian Society of Dietary Life
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• v.19 no.4
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• pp.493-502
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• 2009

This study aimed to examine the relationship between nutrient intake and attention deficit hyperactivity (ADH) of children suffering atopic dermatitis. We examined clinical symptoms as well as the status of ADH and the dietary intake of 47 children with atopic dermatitis aged between 4 and 6 against 84 children in the control group. Family history of the atopic dermatitis group was significantly higher than the control group. There was no significant difference between the diet habit of the two groups. The daily energy intake of the atopic dermatitis group and the control group were 1,189.7 kcal and 1245.0 kcal, respectively. There was no significant difference between the nutrient intake of the two groups. In regards to the clinical symptom items, the point for 'anxieties' was 0.5 in the atopic dermatitis group, which was significantly higher than 0.3 of the control group (p<0.05). In terms of the detailed items in ADH assessed by kindergarten teachers, the point for 'changeable feeling' was 0.8 in the atopic dermatitis group, which was significantly higher than 0.5 of the control group (p<0.05). As for the correlation among nutrient intake, the ADH score and clinical symptoms, total fat intake (p<0.05) and animal fat intake (p<0.05) showed a significantly negative correlation with the point of ADH assessed by the teachers, while the intake of fiber (p<0.05) displayed a significantly negative correlation with the point of ADH assessed by the parents. Since atopic dermatitis and ADH may be caused by the same dietary factors, it will be necessary to conduct more studies in this field in the future. In addition, appropriate nutrition management will be necessary for children in the growing period who suffer from atopic dermatitis.

• Proceedings of the KIPE Conference
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• 1997.07a
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• pp.161-165
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• 1997

For high performance ac drives, the speed sensorless vector control and the stator flux orientation concept have received increasing attention. This paper presents a new method of estimation the speed of AC induction machine(IM). To improve the speed estimation characteristics, accurate stator resistance variation is considered. The effectiveness of the proposed method is verified computer simulation.

• Solar Energy
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• v.13 no.2_3
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• pp.107-119
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• 1993

This paper is to refine the concept of utilizing natural energy, and to introduce new technologies of building energy control. For the global environment protection, it is essential to turn attention to latent capacity of natural renewable energy. Especially the concept of 'Environmental Architecture' is very important from this viewpoint. This paper reviews many of new technologies for environmental architecture developed recently : TIM, high effective solar radiation control strategy of glazing, new passive cooling and heating system etc. The design application of the technology has been introduced.

• Proceedings of the Korea Concrete Institute Conference
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• 1995.04a
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• pp.366-371
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• 1995

This paper is designed to bring to the attention of the reader the situation that may constitute a threat to the safety of RC structures designed and constructed in Korea. This threat stems from the inadequate rules of the acceptance strength control of concrete. As a result in some cases probability of brittle failure can be very high and reliability becomes very low. The paper substantiates the above statements. Further investigations aimed at finding the measures to remedy the situatuion are recommended.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.293-293
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• 2006

Self-assembled nanostructures of block copolymer thin films have gathered significant attention due to their potential applications as templates for nanofabrication. However the lack of a robust strategy to control the structure formation in thin film geometries has been considered a major obstacle for the practical application. In this presentation 'epitaxial self-assembly' will be introduced as a successful strategy to control the self-assembled nanostructure of block copolymer. Chemically patterned surfaces prepared by advanced lithographic techniques successfully registered nanodomains in block copolymer thin film without any single defect over an arbitrarily large area.

• 제어로봇시스템학회:학술대회논문집
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• 1996.10b
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• pp.944-947
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• 1996

Realization of autonomous agents that organize their own internal structure in order to behave adequately with respect to their goals and the world is the ultimate goal of AI and Robotics. Reinforcement learning gas recently been receiving increased attention as a method for robot learning with little or no a priori knowledge and higher capability of reactive and adaptive behaviors. In this paper, we present a method of reinforcement learning by which a multi robots learn to move to goal. The results of computer simulations are given.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.147-147
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• 2000

Recently, a considerable amount of attention is being given to the use of wavelets and neural network for modulation and equalization. We proposed a new scheme of equalization for constellation using discrete wavelet transform(DWT) and neural network. The DWT is used for noise reduction and the neural network is used to update the equalizer coefficients adaptively.

• Proceedings of the KIPE Conference
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• 2002.11a
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• pp.45-48
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• 2002

Switched Reluctance Generator attracts much attention because of high efficiency, simple controllability with traction drive. But the theories that have been adopted as SRG control methods are complicated up to the present. This paper proposes reference current limitation strategy for stable generation and switching angle control in motoring mode. The proposed method is verified by simulation and experiments.