• Journal of the Korean Data and Information Science Society
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• v.14 no.2
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• pp.223-235
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• 2003

Using internet, most of students are still exposed to unreasonable commercial information and even tend to consumptive behaviors. Various programs have been mobilized to keep it with a blockade system against the noxious information. But guidance is more instructive than blockade in respect of education. Thus, the focus of this study is to induce and motivate their self-directed learning activities with internet guide contents. We develope a learning guidance material as one of the information platforms. Furthermore, we consider the availability of such learning guidance materials through interview and observation. We find that easy and meaningful internet access and utilizing environment influence the children's self-directed learning ability.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.14 no.1
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• pp.63-69
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• 2006

The operational environment of helicopters extends from the civil air traffic control system to remote and hazardous areas and from day operations under visual flight conditions to night operations in adverse weather. Helicopters can move in any direction, remain stationary while airborne, climb and descend vertically, and take off and land almost anywhere. Thus their range of maneuvers and control requirements vary more widely than do those of fixed-wing aircraft. In this study, I analyzed the job of helicopter pilot through methods of observation, and classified the required ability of them into the domain of cognitive, perceptual/spatial, psychomotor. I expect that the result of this study will be used to aid training and selection of helicopter pilot.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2001.10a
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• pp.46-50
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• 2001

Due to its ability in producing a net-shape product to high precision in a very shot cycle time, injection molding has become one of the most important polymer-processings in the industry today. Recently the CAE applications in the field of injection molding have provided significant contributions to the mold design and process optimization. As a part of such an application the packing process has been studied using C-PARK. The prediction of pressure variations during post-filling stage for amorphous material has been compared with an experimental observation for a simple rectangular geometry of uniform thickness. And the optimal packing processes were calculated using the cavity pressure curve near the gate. As a case study, a warpage simulation was carried out for a DY-HOLDER with the variable number of gates.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2000.04a
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• pp.203-205
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• 2000

This paper deals with human nursing and milking. We have made clear the principle of milking of human babies that consists of biting force, sucking pressure and movement of tongue. Base on this observation, the tongue mechanism was proposed. Then new type milking machine was developed and helpful milking was realized by controlling it with reference to human babies behavior. The experimental result of milking from nursing bottles and breast of mothers are shown in this paper. According to the result, the machine has almost same ability as babies.

• Journal of Korean Elementary Science Education
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• v.33 no.2
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• pp.286-305
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• 2014

We explored the possibilities of science field experience in Jongmyo Shrine in this study. To understand the educational value of self-leading science activities in Jongmyo Shrine, one of the World Heritage, we developed science program and applied it to the elementary students participating in a gifted education center. We collected and analyzed various data of opinionnaire survey before and after the program, field activity sheets, field observation, and individual- and group interview. The results showed the lack of students' spatial ability and proposed educational interests in science education. Also, a lot of students felt the difficulty in applying school science knowledge into the real life context. Students found the meaning of science learning through cooperative activities in the historically meaningful place. A proper use of smart device in science field experience was recommended. We found that activities with too much smart device might impede various scientific process skills.

• Journal of The Korean Association For Science Education
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• v.11 no.2
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• pp.13-21
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• 1991

For development of teaching model for observational experiment and the major contents of science education guide books published for secondary school teacher in America, the actual survey to the secondary schools and the investigation of science education guide were carried out. The results were summarized as follows. 1. The major concepts of contents in science education books are constituted of introduction(9.67%), ability(8.94%), activity(6.61%), curriculum(11.61%), instruction planning(5.25%), instruction strategy(l7.74%), materials and facilities(1O.97%), evaluation(8.62%), society and community(l0.55%), guidelines(4.76%), practice(3.54%), and index(1.74%). 2. The constitution of multimedia teaching model for observational instruction was developed and arranged in order of six steps as observation, materialization, broad understanding, advanced study, application, and synthesis. This model was thought as the most effective for the achievement of the instructive goal for observational unit and others.

• Journal of the Korean Home Economics Association
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• v.49 no.3
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• pp.55-66
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• 2011

The purpose of this study was to examine the effects of We Start home visiting intervention program on the positive changes of infants and their low-income families. The subjects were 171 18~36-month olds and their mothers living in We Start and non We Start areas. The instruments used were Developmental Profile, Cleminshaw-Guidubaldi Parent Satisfaction Scale(CGPSS) and Home Observation for Measurement of the Environment(HOME). The results were as follows: First, the result of Developmental Profile showed positive changes in all domains(physical development, self-help skills, social development, cognitive development, and communication ability). Second, the result of CGPSS showed positive effects on parent-child relationships. Third, the result of HOME showed positive effects on mothers' emotional and language responses. In conclusion, We Start home visiting program for infants from low-income families is an effective early intervention program to end intergenerational transition of poverty in Korea.

• Toxicological Research
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• v.11 no.2
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• pp.253-259
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• 1995

To investigate an effect of ethanol pretreatment on the bromobenzene metabolism, the brornobenzene (400 mg/kg body wt. i. p.) was given 3 times at intervals of one day to the male rats orally pretreated with 5% ethanol throughout 2 months. In the ethanol pretreated rats, liver injuries were not demonstrated on the basis of the liver weight per body weight, serum levels of alanine aminotransferase (ALT) activity and histopathologic findings. By the bromobenzene treatment, ethanol pretreated rats showed the more decreased levels of serum ALT and liver weight/body weight(%), and decreased degree of liver damage on histopathological observation than the control group. The ethanol pretreated rats showed the more increased activities of hepatic aniline hydroxylase, glutathione Stransf erase (GST) and the more decreased contents of glutathione than the control. Concomitantly the ethanol pretreated rats showed the more decreased contents of hepatic glutathione and increased activities of GST by the bromobenzene treatment. Above results indicate that ethanol pretreatment enhance the metabolizing ability of bromobenzene in rats.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.66-67
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• 2008

Most mineral resources are located in subsurface but mineral exploration starts with a step of investigation in wide-area to find evidence of buried ores. Conventional technique for exploration on wide-area as a preliminary survey is an observation using naked eyes by geologist or chemical analysis using lots of samples obtained from target area. Hyperspectral remote sensing can overcome those subjective and time consuming survey and can produce mineral resources distribution map. Precise resource map requires information of mineral distribution in a subpixellevel because mineral is distributed as rock components or narrow veins. But most hyperspectral data is composed of pixels of several meters or more than ten meters scale. We reviewed subpixel unmixing algorithms which have been used for geological field and tested detection ability with Hyperion imagery, geological map and seven spectral curves of mineral and rock specimens which were obtained from study areas.

• The Journal of Korean Academy of Sensory Integration
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• v.5 no.1
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• pp.41-49
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• 2007

Objective: To evaluate the effectiveness of the home-based program composed of sensory diet for child with sensory modulation disorder. Method: The subject underwent the home-based program composed of sensory diet for 8 months. Evaluation tools we used are the Developmental Screening Test II(DDSTII) for developmental screening; the Short Sensory Profile(SSP), clinical observation and the clinical history record form for sensory integrative function; the Motor-Free Visual Perception Test(MVPT) and draw a person test for visual perception. Evaluation was executed before and after the program is provided. Results: The subject has showed remarkable improvement in developmental level, sensory integrative function and visual perceptual ability after went through the home-based program. Conclusion: The home-based program composed of sensory diet is effective for children with sensory modulation disorder when it is difficult to apply classical sensory integrative approach.