• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.833-836
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• 2012

Demand Controller is a load control device that monitor the current power consumption and calculate the forecast power to not exceed the power set by consumer. Accurate demand forecasting is important because of controlling the load use the way that sound a warning and then blocking the load when if forecasted demand exceed the power set by consumer. When if consumer with fluctuating power consumption use the existing forecasting method, management of demand control has the disadvantage of not stable. In this paper, examine the existing forecasting method and the exponential smoothing method, and then propose the forecasting method using Kalman Filter algorithm.

• Journal of Fashion Business
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• v.26 no.5
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• pp.135-152
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• 2022

This study aimed to evaluate the user experience of hearable devices for seniors and suggest possible development directions. A literature review, case study, and in-depth interviews were conducted. Based on the literature review, convenience, accessibility, transmissibility, wearability, aesthetics, and interest were determined as the user experience factors of hearable devices. Then, in-depth interviews were conducted with 12 participants aged 60 or older regarding four devices. Participants tried four different types of wireless earphones which were selected based on a case study: open-type, kernel-type, neckband-type, and earring-type. Regarding convenience, the participants preferred to carry small devices and regarding accessibility, participants responded positively for most product types. For transmissibility and wearability, there were differences depending on whether devices were put on correctly, but the participants preferred products that did not wholly block external sounds. For aesthetics, participants preferred small and cutting-edge designs. Interest was noticeable among those who had not used the devices before, and for stability, the neckband-type was the most preferred. Based on the results we suggest designing small cutting-edge designs and button-type assist devices, not blocking the external sound, providing a participation program, simplifying device functions, and establishing a method that can be combined with and stored in clothes and a delivery method that can signal danger.

• The KIPS Transactions:PartD
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• v.11D no.7 s.96
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• pp.1499-1506
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• 2004

In this paper an analysis of current video chatting situation and connection status is performed and a technical method to block the obscene contents is proposed. Methods to shut down socially degenerate Internet sites are well known, which are essentially directory or vocabulary based. For the video chatting sites. however, dynamic selectivity is required as the chatting groups in a sites are all different and even in a single group the contents of chatting may turn socially objectionable as time passes. The proposed method is based on the analysis of chatting contents and selectively blocks the sound and/or video data streams. To prove the effectiveness of the method the experiments are performed and the results are shown very satisfactioy.

• Archives of design research
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• v.16 no.1
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• pp.251-260
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• 2003

The fact that office environment is a principal factor affecting work efficiency is widely accepted. Under such a circumstance, developing relocatable office wall systems is highly required. Psychological, physiological, and economical factors, along with physical factors, should be considered to develope a office wall system. More specifically, competitive price, relocatable efficiency, structural stability, fast installation, health and safety, and aesthetic satisfaction are typical determinants. The evaluation results of newly developed wall system are as below: 1) Panel structural system added with the merits of frame structural system can be studied to accomplish minimal disruption to workplace and better finish details. 2) To cover up the existing interior defects such as uneven floor and ceiling, flexible solutions must be studied especially when panel structural system is accepted. 3) More consideration must be given to finish materials, section details, sound blocking and absorbtion to enhance the satisfaction level.

• Journal of The Korean Association For Science Education
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• v.18 no.2
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• pp.161-171
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• 1998

The effects of computer-assisted instruction (CAl) using molecular-level animation upon students' conceptions, attitudes toward science instruction, and learning motivation were investigated. Treatment and control groups (2 classes) were selected from a girls middle school in Seoul, and taught about the motion of molecule for 5 class hours. Before instruction, the short-version Group Assessment of Logical Thinking (GALT) and the Patterns of Adaptive Survey were administered, and the grade for the previous science course was obtained. The GALT score was used as a blocking variable, and the others as covariates. After the instructions, the researcher-made conceptions test, the test of attitudes toward science instruction, and the motivation questionnaire were administered. The perception questionnaire of CAl was also administered to the treatment group. Although more students in the CAl group had sound understanding about the motion of molecule, the scores of the conceptions test for the two groups were not significantly different at .05 level of significance. The students in the CAl group, however, were found to have more positive attitudes toward science instruction and learning motivation. In the perception questionnaire of CAl, most students in the treatment group exhibited positive attitudes toward the CAl. However, some students mentioned that they were disturbed by noisy environments, and that they could not understand some content presented. Educational implications are discussed.