• Biomolecules & Therapeutics
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• 제25권6호
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• pp.659-664
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• 2017

Although lisdexamfetamine is used as a recreational drug, little research exists regarding its potential for dependence or its precise mechanisms of action. This study aims to evaluate the psychoactivity and dependence profile of lisdexamfetamine using conditioned place preference and self-administration paradigms in rodents. Additionally, biochemical techniques are used to assess alterations in the dopamine levels in striatal synaptosomes following administration of lisdexamfetamine. Lisdexamfetamine increased both conditioned place preference and self-administration. Moreover, after administration of the lisdexamfetamine, dopamine levels in the striatal synaptosomes were significantly increased. Although some modifications should be made to the analytical methods, performing high performance liquid chromatography studies on synaptosomes can aid in predicting dependence liability when studying new psychoactive substances in the future. Collectively, lisdexamfetamine has potential for dependence possible via dopaminergic pathway.

• 복식
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• 제42권
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• pp.43-58
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• 1999

The purpose of this study was to investigate the effect of perceived risk and product express-ive self-image on the consumer's adoption of casua hanbok. A questionnaire was developed and data colle-cted from 269 women in Pusan. Data were analyzed to investigate the relation-ship among purchase intention perceived risk and product epressive self-image. Marketing implication about risk reduction was discussed. The results of this study were as follows. 1. Consumer's perceived risk on adoption o casual hanbok classified into four factors They were the risk on the confirmation of advantage of casual hanbok the risk on the negative viewpoint of others the risk on the complexity of dressing and care and the risk on the shortcoming of casual hanbok. It was explained that casual hanbok is innovative product. 2. According to the level of adoption of casual hanbok. consumers were categorized into three groups i.e. adopter potential adopter rejector. They differed in the degree of risk perception age and subjective knowledge redlated to casual hanbok. 3. Consumer's subjective knowledge age and two types of risk has predicting power to the purchase intention. Consumer's subjective knowledge was the best predicted factor and risk perception was negatively related to purchase intention. 4. The significant differences among the categ-orized consumer group was founded in the ideal self image and product expressive self-image 5. The gap of perception between ideal self-image and product expressive self-image was significantly different in each categorized consumer groups.

• 대한간호학회지
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• 제29권3호
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• pp.679-687
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• 1999

The increased potential for the lifespan of a child with cancer is largely due to advances in drug treatment, radiation treatment, and surgical techniques. In this generation cancer has become associated with chronic illness. Therefore supportive nursing intervention for children with cancer is needed to promote normal growth and development. This study was designed to develop and test the supportive nursing intervention program for promoting body image and self-esteem of children with cancer The supportive nursing intervention program involved emotional, physical, informational, and social support. The subjects were 41 children with cancer(20 in intervention group, 21 in control group) in K city. Measurements were taken concerning body image and self-esteem from both groups during pre and post test The data were analyzed using Cronbach's alpha, x$^2$-test, paired t-test and t-test. The results were as follows : The intervention group had a more positive body image as measured by the Body Cathexis Scale (t＝2.436, p＝.020) and a more self esteem as measured by the Cpopersmith self-inventory (t＝2.768, p＝.009) than the control group at post test. According to this study, the supportive nursing intervention program was effective for promoting the body image and self-esteem of children with cancer. Repeated research is needed to develop a refined supportive nursing intervention program for children with chronic illness.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.334-339
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• 1992

This study is concerned how to construct a model of life as physical/ mathematical representation. This model is called here a bionic model and vibrating potential field is introduced as fundamental world background of the model. Namely, required information creating/ processing/ controlling are done on this field. Especially this paper reports how to realize the simulation of a bionic self organization and its functional expression based on the mutual actions among a set of life units.

• 대한화학회지
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• 제53권5호
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• pp.620-624
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• 2009

• International Journal of Control, Automation, and Systems
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• 제4권6호
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• pp.756-762
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• 2006

Shape Memory Alloy(SMA) actuators, which have the ability to return to a predetermined shape when heated, have many potential applications such as aeronautics, surgical tools, robotics and so on. Although the conventional PID controller can be used with slow response systems, there has been limited success in precise motion control of SMA actuators, since the systems are disturbed by unknown factors beside their inherent nonlinear hysteresis and changes in the surrounding environment of the systems. This paper presents a new development of a SMA position control system by using a self-tuning fuzzy PID controller. This control algorithm is used by tuning the parameters of the PID controller thereby integrating fuzzy inference and producing a fuzzy adaptive PID controller, which can then be used to improve the control performance of nonlinear systems. The experimental results of position control of SMA actuators using conventional and self-tuning fuzzy PID controllers are both included in this paper.

• 가정과삶의질연구
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• 제27권3호
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• pp.171-180
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• 2009

This study was conducted to investigate the relationship of students' attachment to parents and their self control to Internet addiction. The participants in this study included 338 elementary students, 371 junior high students, and 342 high school students of Kyunggi province. They were categorized into 3 groups by their aptitude to Internet addiction: serious addicts, potential addicts, and non-addicts. According to the results, older students showed higher tendency toward Internet addiction, and more insecure attachment to their parents. More than 20% of participants were disposed to addiction to the Internet, indicating that immediate intervention should be applied. Significant variables to explain students' Internet addiction were differentiated along their developmental levels. Attachment to parents was related to the Internet addiction of elementary and junior high students, while self control was more critical for high school students' addiction.

• Advances in materials Research
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• 제2권1호
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• pp.65-75
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• 2013

Heterogeneous photocatalysis is a rapidly developing field in environmental engineering. It has a great potential to cope with the increasing pollution in the air. The addition of a photocatalyst to ordinary building materials such as tiles, concrete, paints, creates environmental friendly materials by which air pollution or pollution of the surface itself can be controlled and diminished. This work reports the results of the laboratory research, especially carried out towards air purifying action and self-cleaning measurements. In particular the research was focused on the study of the photocatalytic behavior of industrially prepared tiles produced starting from commercial micro-sized $TiO_2$. Air purification action has been investigated through NOx degradation tests. On the contrary, the degradation of pollution at the surface, also called as self-cleaning action, is verified by the degradation of two different organic dyes: Rhodamine B (red color) and Metanil yellow (yellow).

• 아동학회지
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• 제27권5호
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• pp.109-122
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• 2006

The program for overcoming shyness consisted of four step-by-step parts, understanding shyness, overcoming anxiety, improving self-esteem, and promoting self-assertion. Participants were 6 boys and 10 girls from three kindergarten classes. The two gender groups were randomly assigned to either the experimental or the control group. The experimental group participated in the program for 50 minutes per day twice a week for 12 sessions, and the control group received no treatment. Eight non-shy children also joined the program in the ninth and tenth sessions. Findings indicated that shyness in the experimental group decreased significantly while the control group maintained previous levels of shyness, implying that early intervention programs have potential effectiveness for reducing shyness in young children.

• 한국정밀공학회지
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• 제18권4호
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• pp.135-141
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• 2001

An experimental study to find the effect of processing parameters for self-healing microcapules is performed. These microcapsules can be applied to accomplish the healing of delamination damage in woven E-glass/epoxy composites. This paper introduces the self-healing concept and presents a method for solving the microcapsule size and shape. Additionally, processing parameters are varied during the formation of microcapsules and these capsules are observed through optical microscope. To obtain thermogravimetric(TG) curve for the manufactured microcapsules, TGA tests are executed. From these results, the best processing conditions for the formation of capsules are found as follows: (1) temperature of solution $ 50^{\circ}C$, (2) potential of hytdrogen(pH) 3.5ppm, and (3) agitation 500~600rpm.