• Korean Journal of Child Studies
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• v.30 no.2
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• pp.1-13
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• 2009

This study examined the extent to which young children's scientific inquiry capabilities and curiosity are affected by their mothers' awareness about science education and their mutual interaction. Instruments were Levels of Mothers' Awareness about Science Education and Interaction with Children (Jeon, 2006), Children's Scientific Thinking Capabilities (Lee, 2000), and Children's Curiosity (Lee, 2001). Differences between high-and low-ranked groups were analyzed by t-tests. Results showed that children whose mothers displayed high levels of awareness about science education and mutual interaction showed better scientific inquiry capabilities and curiosity than children whose mothers did not display such high levels. By confirming the significant role of mothers in their children's science education these results can be an aid to parent education.

• The Journal of the Acoustical Society of Korea
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• v.14 no.6
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• pp.21-26
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• 1995

In this paper integral equations are derived and simulated numerically for the mutual radiation impedance of an acoustic transducer in a Plane array. It is assumed that the pistons are mounted in the rigid infinite baffle. The mutual radiation impedance is separated into resistance and reactance and plotted as a function of ka and kd. Mutual radiation resistance is decreased and perturbed according to increase of ka. Mutual radiation reactance is decreased along to increase of ka. Mutual impedance is decreased when kd is increased. However, when ka is 6, 13, and 19 the interaction effect is decayed. When the relative piston position of the two pistons is 45 degree, the amount of interaction becomes minimized.

• ETRI Journal
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• v.33 no.2
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• pp.210-218
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• 2011

Battiti's mutual information feature selector (MIFS) and its variant algorithms are used for many classification applications. Since they ignore feature synergy, MIFS and its variants may cause a big bias when features are combined to cooperate together. Besides, MIFS and its variants estimate feature redundancy regardless of the corresponding classification task. In this paper, we propose an automated greedy feature selection algorithm called conditional mutual information-based feature selection (CMIFS). Based on the link between interaction information and conditional mutual information, CMIFS takes account of both redundancy and synergy interactions of features and identifies discriminative features. In addition, CMIFS combines feature redundancy evaluation with classification tasks. It can decrease the probability of mistaking important features as redundant features in searching process. The experimental results show that CMIFS can achieve higher best-classification-accuracy than MIFS and its variants, with the same or less (nearly 50%) number of features.

• Korean Membrane Journal
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• v.3 no.1
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• pp.39-50
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• 2001

The counter-diffusion of two gaseous substances permeating a polymeric membrane has been investigated both experimentally and theoretically. The aim of the study was to find mutual effects, if any, that could influence the permeability and diffusivity data. The experimental data were obtained with an isostatic permeameter operating at ambient pressure and 303 K: helium, nitrogen, carbon dioxide methane were used as permeating gas at different partial pressure; helium or nitrogen as equilibrating or carrier gas. No evident mutual effect of the counter-diffusing gas was observed. The theoretical analysis gave some insight into the phenomena and it was concluded that at near-atmospheric pressures, and in the absence of swelling phenomena no mutual interaction exists. On a theoretical basis any mutual interaction between diffusing and counter-diffusing gases could only occur: i) at high pressures , when the free movement of permeating gas molecules within the polymer is hindered by the counter-diffusing gas; ii) when a large part of the free volume fraction is occupied by the counter--diffusing gas; iii) swelling phenomena modify the structure and free volume fraction of the polymer.

• Archives of design research
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• v.19 no.5 s.67
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• pp.293-302
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• 2006

Since the late 20C, the development of informative electronic technology has expanded human beings' spatial recognition from three-dimension into multi-dimension. Also space has formed mutual organic relation with the human being, since they started having the image responding ability of experience and recognition. The mutual organic relation has appeared in exhibition space aggressively introduced informative electronic technology from existing physical space. Therefore, m carried out a compartive study into the status of exhibition facilities and the form of interaction focusing on exhibition facilities as a medium of interaction between information and users in experiential exhibition space to which informative electronic technology had been introduced. The ultimate purpose of the study was that the phenomena, which had been anticipated from happenings in mutual organic relation between human beings and space, was reflected on space as a place of various communication activities. Hereafter, researches and studies on further exhibition should be continued to clarify the mutual relationship between exhibition space and user trends not only through exhibition space but also through the study of user trends that are changing everyday.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.177-178
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• 2006

• Korean Journal of Child Studies
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• v.9 no.1
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• pp.33-46
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• 1988

The purpose of this study was to investigate the effects of age, sex, and friendship type on child's shared knowledge of a friend. The following hypotheses were raised; Child's shared knowledge of friend would increase with age, shared knowledge of girls would be higher than that of boys shared knowledge of girls would be higher than that of boys shared knowledge in a mutual friendship would be higher than in a unilateral friendship, there would be an interaction effect between age and friendship type in child's shared knowledge of friend. The subjects of this study consisted of 80 boys and girls, 8- and 11-year-olds. Shared knowledge of a friend was measured with a modified version of the 70 picture items developed by Ladd and Emerson (1984). The obtained data were analyzed by three-way ANOVA. Child's shared knowledge of a friend increased with age. Girls exhibited greater ORSK (other-referenced shared knowledge) than did boys, but there was no significant difference between girls and boys in SRSK (the selfreferenced shared knowledge). Mutual friendships exhibited greater SRSK than did unilateral friendships, but there was no significant difference between mutual friendship and unilateral friendship in ORSK. There was a significant interaction effect between age and friendship type in child's shared knowledge of friend.

• 제어로봇시스템학회:학술대회논문집
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• 1993.10b
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• pp.558-561
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• 1993

The main difference between a linear system and a nonlinear system is the existence of direct interactions between input signals. These interactions will be classified into three types, (1) self-interaction among different order terms of control signals, (2) static mutual interactions between the control signals, and (3) dynamic interactions through the coefficient venctor fields of the control variables. In this paper, we will show that interactions of type (2) and (3) can be avoided by applying an appropriate dynamic compensator, while the interaction of type (1) is fatal.

• Journal of Welding and Joining
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• v.22 no.4
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• pp.73-81
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• 2004

Failure mechanisms of welded joints under fatigue loads are interpreted that multiple collinear surface cracks initiating randomly along the weld toes propagate under the mutual interaction and coalescence of adjacent two cracks. To estimate fatigue crack propagation life for three types of the representative welded joints, i.e. non-load carrying cruciform, cover plate and longitudinal stiffener joint, the stress intensity factors at the front of the surface cracks have to be calculated, which are influenced strongly by the geometry of attachments, weld toes and the crack shapes. For the effective calculation of the stress intensity factors the Mk-factor was introduced which can be derived by a parametric study performed by FEM considering influence of the geometrical effects. The fatigue life of the cruciform joint was estimated by using the Mk-factors and the method considering the propagation mechanisms of the multiple surface cracks. Analysis results for the fatigue life had a good agreement with that of experiment.

• Korean Journal of Organic Agriculture
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• v.26 no.1
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• pp.73-82
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• 2018

The alternative marketing can be defined a face to face regional marketing that commodities are traded based on mutual trust and understanding which have been accumulated through relationships formation and interaction between producers and consumers. Essences of an alternative marketing are formation, expansion and solidarity of relationships between producers and consumers, mutual trust and communication, and cooperation. Based on these, it makes it's principle to trade regionally and shorten food mileage and psycho-social distance. For example, there are local food direct stores, local food markets, farmer's markets, food package sales, CSA, local food school or public meal and so on. In alternative marketing, the relationship among them is especially considered very important in marketing process, not just a flow of commodities.