• Journal of the Korea Concrete Institute
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• v.23 no.6
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• pp.701-709
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• 2011

One of the typical evaluation models of concrete air-void system is spacing factor (SF), which was suggested by Power. Power Spacing Factor (PSF) has a disadvantage of the result being different from the actual case due to the existence of entrapped air, because PSF uses average single spacing factor. Therefore, the Actual Measurement Spacing Factor (AMSF) using actually measured data of air void spacing was developed from this study. PSF and AMSF were compared and evaluated in this study by using the image analysis test result of concrete mixture. This study results showed that PSF and AMSF are generally similar, but AMSF had a larger value when PSF was greater than $400{\mu}m$. The results indicated a possibility of PSF giving false measurement estimation where the measurement is less than the actual value in the concrete mixture containing less air. Also, in the result of PSF and AMSF analysis according to the existence of entrapped air, AMSF showed a larger value in the analysis without entrapped air. But PSF showed a smaller value in the analysis without entrapped air, which was different from the actual case. Because PSF used average single spacing factor, it tended to give a false result. The study results showed that AMSF gave more accurate analysis results.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.6647-6654
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• 2015

The purpose of this study was to analysis a Korean version of Satisfaction with Simulation Experience(SSE) Scale by paramedic students. Total number of 111 students majoring in the EMT-paramedic education area have taken part in the survey after completing the professional cardiac resuscitation simulative training, using the standardized simulation satisfaction evaluation method (SSE scale). Through the scale, one's preference, necessity, ACLS theory grade, and satisfaction rate per year regarding the training were measured. To analyze one's preference, necessity, ACLS theory grade, and satisfaction rate per year in regards to the training, one-way ANOVA was used. The result reveals that the overall satisfaction rate was generally quite high. When one's preference and necessity rate is high, the satisfaction rate also seems to increase. The result indicates that the simulation training will enhance the students' clinical skill, patient evaluation, and treatment capability as well as one's field adaptation skill at the time of an emergency occurrence. Eventually, training through the ACLS simulation will be used in the future for the benefit of encouraging students from emergency rescue to adapt to the site of an emergency. Therefore, such an education method should be maintained and further developed.

• Journal of Convergence for Information Technology
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• v.10 no.2
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• pp.102-108
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• 2020

Increasing the rice consumption, seven kinds of Nurungji which served as a home meal replacer and snack were developed with some functional materials were added, and their physiochemical characteristics were analyzed. The water binding capacity was the highest in Nurungji with black sesame seed (264.13%), and the hardness was the lowest as 0.36 N in Nurungji with Tenebrio molitor. The reducing sugar content was the highest in Nurungji with sweet pumpkin (1.47%) when being soaked in water for 30 minutes. As a result of measuring 2,2-diphenyl-1-picryl-hydrazyl free radical scavenging activity of the tested Nurungji preparations, Nurungji with sweet pumpkin and beet showed the high scavenging activity against free radicals. As a result of sensory evaluation, overall acceptability was the highest in Nurungji with black sesame seeds (4.3). Physicochemical characterization and sensory evaluation of Nurongji added with various materials confirmed that they could be applied to various food products.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.3
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• pp.553-559
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• 2004

This study was carried out to estimate the effects of glucono-$\delta$-lacton (GDL) on prolongation of shelf-life on Kimchi. Final concentration of added GDL was determined 0.3% according to the result of sensory evaluation. Chemical characteristics and microbiological parameters were monitored during fermentation at 1$0^{\circ}C$. GDL Kimchi showed the initial sharp decrease in pH and gradually increase of pH due to osmotic pressure and then the pH of GDL Kimchi was slowly decreased compared with that of control Kimchi during fermentation. The acidity of control Kimchi was markedly increased around pH 4.5 by growth of microorganism. Otherwise, GDL Kimchi showed that t]le formation of organic acids was slow and little amount compared with that of control Kimchi. HPLC analysis showed oxalic acid, lactic acid, acetic acid, malic acid and succinic acid appeared by fermentation. The production of lactic acid changed a lot in control Kimchi, where as little in GDL Kimchi. Growth of L. mesenteroides at initial stage of Kimchi fermentation was remarkably inhibited by adding 0.3% GDL. It retarded also the growth of L. Plantarum and L. breuis at late stage of Kimchi fermantation and led to reduce the softening of texture and retard over ripening of Kimchi. Tn sensory evaluation of Kimchi, GDL Kimchi showed the similar characteristics to the control Kimchi. This result suggested that GDL can be successfully used for the prolongation of shelf-life and sensory evaluation on Kimchi.

• The Journal of the Korea Contents Association
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• v.21 no.1
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• pp.363-372
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• 2021

Aim of this study was to confirm the effect of teaching and learning methods on outcomes of learner according to learning style. For this, 22 of dental hygiene students(case group) was treated teaching & learning methods according to learning style while 24 of students(control group) was non treated. Pre-survey were performed before performance of program. Formative Evaluation(FE) was conducted in 2, 3 and 4 week of program respectively and summative evaluation(SE), survey of subject interest(SI) and learning motivation(LM) were conducted in 5 week. The result of study, FE, SI and LM after treatment were increased than before treatment in case group(p<0.05). SI and LM of case group were higher than control group(p<0.05). FE after treatment was increased than before treatment in he assimilator(p<0.05). SI and LM of case groups were higher than control group in assimilator and diverger(p<0.05). The result of correlation analysis, SI was related with SE, FE, LM(p<0.01, p<0.05). Thus, it is necessary to development, application and study of teaching & learning consider to learning style.

• Journal of the Earthquake Engineering Society of Korea
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• v.2 no.4
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• pp.31-40
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• 1998

The purpose of this study is to investigate static elastoplastic behaviour and estimate ultimate resistance capacity of a high-rise apartment shear wall system subjected to a vertical distribution of lateral loading along the height. A typical 25-story two unit plan apartment is selected as a representive model. For the analysis, the pushover analysis is adopted to estimate initial elastic stiffness, post-yielding stiffness and story shear yield resistance level on each story of the structure through three-dimensional nonlinear analysis program-CANNY. In the result of elastoplastic analysis, it is observed that the yield strength of building structures is 1.6 times larger than required lateral design strength.

• Journal of Korean Association for Spatial Structures
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• v.16 no.1
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• pp.95-104
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• 2016

Recently, the concept of damped outrigger system has been proposed for tall buildings. But, structural characteristics and design method of this system were not sufficiently investigated to date. In this study, the dynamic response control performance of outrigger damper has been analyzed. To this end, a simplified analysis model with outrigger damper system has been developed. Use the El Centro seismic(1940, NS) analysis was performed. Analysis results, on the top floor displacement response to the earthquake response, did not have a big effect. However, acceleration response control effect was found to be excellent. The increase of outrigger damper capacity usually results in the improved control performance. However, it is necessary to select that proper stiffness and damping values of the outrigger damper system because, the outrigger damper having large capacity is result in heavy financial burden.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.6
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• pp.53-66
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• 2019

The purpose of this study was to suggest indicator-based selection and improvement plans for evaluating urban regeneration projects. First, we selected the indicators by conducting expert surveys and analysis of the responses received. Additionally, using the selected indicators, we analyzed the residents' opinions in Wongogae Village, where urban regeneration projects were in progress. Based on these, we suggested a plan to improve Wongogae Village. According to the study, we classified the urban regeneration evaluation indicators into 'Physical environment', 'Social environment' and 'Economic environment' according to their characteristics. We selected urban regeneration evaluation factors through the first expert survey and MCB analysis. As a result, we selected six factors for the 'Physical environment' category: 'Traffic and pedestrian environment', 'Residential (housing) environment', 'Safety and security environment', 'Greenspace', 'Landscape improvement' and 'Public space', In the 'Social environment' category, four factors were chosen: 'Resident participation', 'Community activation', 'Role of the local government and support centers' and 'Resident education' while for the 'Economic environment' category three factors were selected: 'Local economic revitalization', 'Creating an economy-based environment', 'Job creation'. Next, we conducted a second expert survey and carried out an AHP analysis using the selected evaluation factors to derive the overall weight for each. Among the evaluation factors for urban regeneration, the 'Residential (housing) environment' has the highest weighted value of 0.108, followed by 'Local economic revitalization' and 'Resident participation'. Lastly, the analysis of the residents' opinions of Wongogae Village using the urban regeneration evaluation factors, Parking environment', 'Maintenance of old houses and living environment', 'Environment for founding town and social enterprises', 'Improve commercial and business environment', 'Maintain and activate existing business' and 'Vitalizing small regional economies such as domestic handicrafts and side-job' had high overall importance, but low satisfaction, which means that it is necessary to improve the focus. Therefore, in order to improve the urban regeneration project in villages, it is necessary to improve the parking environment by expanding public parking lots, eliminate close houses, and idle lands, or open a school playground in the village for the residents. In addition, it is essential to encourage economic activities, such as fostering village enterprises and social enterprises in connection with cooperatives and allow for the selling of the products through resident activities, such as neighboring markets.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.8
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• pp.915-920
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• 2015

Recently, many companies try to offer various services using drones. Especially, the drone delivery system is a good example. However, the drone delivery service has some problems since the heavy parcels flies over the people walking down streets, so many things must be considered such as dropping mails by collision of drones. To resolve the problem, in this paper, a inter-drone network communication will be used to design the topology and to simulate in the Opnet simulator for the performance evaluation. Additionally, the topology with random mobility of trajectory of drones is also designed and simulated for the result.

• The Journal of the Korea Contents Association
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• v.14 no.5
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• pp.55-62
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• 2014

This study investigated the brand personality of competitive brands in the same product category by conducting the evaluation of advertising message. The common personalities and different personalities of some brands were compared. The outdoor product was chosen for a product category. 4 different brands recently launched were selected for the study. For the analysis, every 3 TV commercials of each brand were examined by experiment respondents. As a result, all brands had two common brand personalities-passion and competence. Other representative brand personalities were ruggedness, sophistication, and sincerity.