• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.4
• /
• pp.1419-1426
• /
• 2012

The heating and cooling energy load of the KNU plant factory was analyzed using the DesignBuilder. Indoor temperature set-point, LED supplemental lighting schedule, LED heat gain, and type of double skin window were selected as simulation parameters. For the cases without LED supplemental lighting, the proper growth temperature of lettuce $20^{\circ}C$ was selected as indoor temperature set-point together with $15^{\circ}C$ and $25^{\circ}C$. The annual heating and cooling loads which are required to maintain a constant indoor temperature were calculated for all the given temperatures. The cooling load was highest for $15^{\circ}C$ and heating load was highest for $25^{\circ}C$. For the cases with LED supplemental lighting, the heating load was decreased and the cooling load was 6 times higher than the case without LED. In addition, night time lighting schedule gave better result as compared to day time lighting schedule. To investigate the effect of window type on annual energy load, 5 different double skin window types were selected. As the U-value of double skin window decreases, the heating load decreases and the cooling load increases. To optimize the total energy consumption in the plant factory, it is required to set a proper indoor temperature for the selected plantation crop, to select a suitable window type depending on LED heat gain, and to apply passive and active energy saving technology.

• The Journal of the Korea Contents Association
• /
• v.11 no.11
• /
• pp.102-110
• /
• 2011

This study is to reveal the meaning of the interaction between a player and a game with the approach of an operational interaction such as joystick and keyboard, and also a representational interaction that the player takes during the game. It has been usually recognized that cut-scene in existing games is just limited to the role of opening scene that delivers mainly a background story of the game, and has the only passive function that serves additionally the expression of the state of the player or the replay of the results of the player's action. But in the aspect of game-direction, the study of the player's action about the interaction movie of 'Uncharted2', for example, one of the most representative video games, shows the possible classification of interaction movie along with three functions(situation direction, induced selective-action, information transfer). As a result, it is judged that interaction movie is not an additional element for the game-play, but rather takes the function of as an interface. The effective application of interaction movie could help a smooth connection between the recognizability from the view point of the player and the playing from the main character's viewpoint, ultimately leading to a direct means to maximize the delivery of the story.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.29 no.4
• /
• pp.203-225
• /
• 2018

With the recent increase in private universities being closed due to a decrease in the number of students, the importance of records management at schools is also increasing. However, the guidelines for records management at closed private universities are ambiguous, causing confusion in the transfer of records and management. Therefore, this study conducted a literature survey on university records and institutions, and examined the current status of private universities in schools through education statistics services. Among the surveyed private universities, the latest to be closed, and the largest of them was Suh Nam University, which looked at the detailed records management status of private schools. The purpose of the interview was to analyze the results of the interview and draw up implications and propose improvement measures. First, the proposed improvement plan in this study is to make it mandatory to deploy records management specialists at private universities for specialized records management. Second, the law should be revised to improve the ambiguity of private universities' guidelines. Third, continuous support from higher institutions should be ensured so that records management at closed private universities is not passive. This improvement will enable records management at closed private universities to be carried out efficiently when the future closure of private universities is carried out.

• Journal of Bio-Environment Control
• /
• v.22 no.4
• /
• pp.427-431
• /
• 2013

Paprika fruits should be stored and distributed at above $7^{\circ}C$ to prevent chilling injury but the small amount of paprika that transports with other horticultural products in refrigerated container by ship usually stored less than $5^{\circ}C$ for other products. In this case, paprika fruits cannot help exposing chilling temperature, so that the paprika must be lost marketable value during a long period of transfer. This study was conducted to compare the alleviated effects of high $CO_2$ treatment (passive MAP), heat (hot water dipping), and UVc treatment on chilling injury of paprika fruits due to low temperature storage, and also to decide if these treatments can be used for transporting under $5^{\circ}C$. After each treatment the paprika were put in the low temperature storage ($4^{\circ}C$) for 20 days and afterwards change the in room temperature ($20^{\circ}C$) for 5 days. The fresh weight loss of all the treatments except the high $CO_2$ treatment showed around 7~12% after 25 days of storage and the ethylene concentration showed periodical increases and decreases as around 3 ${\mu}l/l$. The $CO_2$ concentration was rapidly increased 33% carbon dioxide in high $CO_2$ treatment during room temperature storage after cold storage for 20 days. The firmness which is key quality characteristics during storage and is decreasing caused by chilling injury was not significantly different among all treatments. However, the firmness of stored paprika was maintained highest in the treated with hot water dipping. Therefore, HWD and UVc treatment that showed 60% of electrolyte leakage in the $4^{\circ}C$ control (chilling injury control) and similar level with the $7^{\circ}C$ control (non-chilling injury control) would be effective to alleviate chilling injury in the stored paprika.

• Tuberculosis and Respiratory Diseases
• /
• v.42 no.4
• /
• pp.455-464
• /
• 1995

Background: Considering that both humoral and cell mediated immunities play an important role for human tuberculosis infection, enzyme-linked immunosorbent assay(ELISA) measurement of immunoglobulin G (IgG) antibody to mycobacterial antigens can be used for the serologic diagnosis of tuberculous pleural effusion. Method: We measured absorbance values of IgG antibodies to purified-protein-derivative (PPD) and lipoarabinomannan-B (LAM-B) in the pleural fluid (PF) and the serum in 40 tuberculous (TPE) and 19 nontuberculous pleural effusions (NTPE). Results: 1) The IgG antibodies to PPD and LAM-B were significantly (P<0.0005) higher in the PF and the serum of TPE compared to NTPE. 2) The IgG antibodies to PPD and LAM-B in the serum were higher than that in PF. 3) Significant correlations were found between pleural and serum IgG antibodies to PPD and LAM-B. 4) With a cutoff value for IgG antibody to PPD in the PF of 0.091, sensitivity was 55.0% and specificity 94.7% in the diagnosis of TPE. 5) With a cutoff value for IgG antibody to LAM-B in the PF of 0.337, sensitivity was 50.0% and specificity 94.7% in the diagnosis of TPE. 6) The seropositive rates in TPE were not related to PPD skin test status, the amount of PF and coexisting active pulmonary tuberculosis. Conclusion: The assay of IgG antibodies to PPD and LAM-B might be useful for the diagnosis of TPE. Our study suggests the mechanism of passive transfer of IgG antibodies to PPD and LAM-B from the serum to the PF through pleural tissue.