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멀티미디어 학습매체가 유아의 창의적 놀이특성에 미치는 효과
어성해 한국컴퓨터게임학회 2014 한국컴퓨터게임학회논문지 Vol.27 No.2
This study attempted to examine what changes of creative play characteristics occur when having education experience using multimedia in the field of early childhood education. In order to conduct the study, 15 infants at H day care center and 15 infants at S day care center, both located in Seoul, were selected as the subjects. The program processing was composed of extension activities using multimedia after listening to fairy tales using multimedia. For study instrument, the behavior test for creative play developed by Hwang Yoon Sae (2008) was used. This instrument consisted of total 5 subfactors: intrinsic motivation – imagination; sensitivity – curiosity; durability – immersion; various interests – challenge; and initiative – independence. For statistical analysis, SPSS 17.0 was used, and t-test was used for the statistic process. As a result of the experiment, it was concluded that the education experience using multimedia has positive effect on overall characteristics of creative behavior of infants; in detail, behavior characteristics of infants in the aspects of intrinsic motivation – imagination, sensitivity – curiosity, and durability – immersion were remarkably improved, whereas the characteristics in the aspects of interests – challenge and initiative-independence did not show any particular changes. In other words, the infants who receive a lot of multimedia materials have more creative thinking than those who do not receive a lot of multimedia materials, and this thinking ability is also reflected in play activities.
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무창 비육돈사에서 습식공기정화기의 여름철 공기정화효율 분석
오인환,이종현,이경훈,이정훈,이동섭,어성만,이미림,Oh, I.H.,Lee, J.H.,Lee, K.H.,Lee, J.H.,Lee, D.S.,Eo, S.M.,Lee, M.L. 한국축산환경학회 2006 축산시설환경학회지 Vol.12 No.3
The climate of stall significantly influences on animal production ability. High concentration of ammonia gas, $CO_2$ and lots of dust are found in modern densely raising stall system, as results, they provide a negative influence on animal and farmer health, and production ability. Therefore, it is necessary to keep clean the inside air of stall to increase the productivity. An air cleaner of wet type, consisting of a fan, a motor, rotating discs, a dust collector, a water bowl, an ozone generator etc, has been developed to clean the stall air. The work principle is that the inside air is sucked through the fan, and the rotating discs make water into fineness spray and blow into the stall. The rest water flows down to the dust collector. In the present study, we measured the dust, ammonia gas, odor, temperature and humidity in a swine stall that were installed two wet air cleaners with 700 fattening swine with On-mode and Off-mode of wet air cleaners. The dust measure was divided into 3 categories, TSP, $PM_{10}$, and $PM_{2.5}$. In summer, the TSP in on-mode were maximum $0.259mg/m^3$ and minimum $0.128mg/m^3$, and the average was $0.195mg/m^3$. These are comparable to the data from Off-mode stall that maximum $0.308mg/m^3$, minimum $0.139mg/m^3$, and average $0.277mg/m^3$. However, $PM_{10}$ and $PM_{2.5}$ showed any significant differences between the tests. The concentrations of ammonia gas in Off-mode stall were maximum 13.8 ppm and minimum 5.9 ppm, and the average was 8.47 ppm. However in On-mode stall the ammonia gas concentrations were maximum 10.5 ppm and minimum 5.5 ppm, and the average was 7.63 ppm. The concentration of ammonia gas in On-mode was 10% in average lower than off-mode stall. Odor was measured by olfactometer. In the Off-mode stall, the odor unit were maximum 420 $Ou/m^3$ and minimum $300\;OU/m^3$, and the average was $367\;OU/m^3$, but in the On-mode stall the odor unit were maximum $330\;OU/m^3$ and minimum $210\;OU/m^3$, and the average was $253\;OU/m^3$. Odor removal efficiency was about 31% in On-mode stall.
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