• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.28 no.4
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• pp.121-132
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• 2023

Marine heatwaves (MHWs), referring to anomalously high sea surface temperatures, have drawn significant attention from marine scientists due to their broad impacts on the surface marine ecosystem, fisheries, weather patterns, and various human activities. In this study, we examined the impact of the distribution of Changjiang diluted water (CDW), a significant factor causing oceanic property changes in the East China Sea (ECS) during the summer, on MHWs. The surface salinity distribution in the ECS indicates that from June to August, the eastern extension of the CDW influences areas as far as Jeju Island and the Korea Strait. In September, however, the CDW tends to reside in the Changjiang estuary. Through the Empirical Orthogonal Function analysis of the cumulative intensity of MHWs during the summer, we extracted the loading vector of the first mode and its principal component time series to conduct a correlation analysis with the distribution of the CDW. The results revealed a strong negative spatial correlation between areas of the CDW and regions with high cumulative intensity of MHWs, indicating that the reinforcement of stratification due to low-salinity water can increase the intensity and duration of MHWs. This study suggests that the CDW may still influence the spatial distribution of MHWs in the region, highlighting the importance of oceanic environmental factors in the occurrence of MHWs in the waters surrounding the Korean Peninsula.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.345-352
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• 2024

K-Pop Square Media, located at COEX in Samseong-dong, has gained public attention and mass media focus by showcasing various three-dimensional videos on a large LED display. The video content on the distinctive large curved LED display utilizes a form of media façade technique, establishing itself as a new landmark and attraction within the spatial characteristics of the COEX Plaza. This study aims to examine the characteristics of media facades used in outdoor advertising in urban spaces, focusing on K-Pop Square Media. The approach for this research involves three aspects: Firstly, examining the 'spatial characteristics' of urban public spaces by referencing Kevin Lynch's five elements constituting urban space and William J. Mitchell's exploration of smart spaces and changes in spatial paradigms. Secondly, analyzing the 'digital nature' of outdoor advertising through an examination of three types of Digital Out-Of-Home (DOOH) Media. Thirdly, exploring the 'technological advancements and content composition of media facades' by investigating types of display media (projection, LED screens), the inception of media facades, and the latest display technology like Anamorphic displays. Through this research, it becomes evident that K-Pop Square Media exhibits characteristics of publicness, communicativeness, artistry, and placemaking through the spatial characteristics of smart spaces, the media-specific aspects of Digital Out-Of-Home advertising, and the content composition of media facades.

• KIEAE Journal
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• v.16 no.4
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• pp.47-54
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• 2016

Purpose: Grafting new hanok-style application technology on child daycare facility among public buildings can be an alternative that provides infant facility, which is placed at the center of social attention and interest, with pleasant nursing environment. Besides, it is expected to have a great impact on infants' and young children's emotion by helping them recognize traditional culture at early stage and furthermore can be used for villagers to experience differentiated traditional culture. Method: To investigate the recent construction of HeungCheon/SuRak/GeumGwa's Hanok child daycare facility recognizing for architectural planning characteristics in common tendency Hanok that presents a physical improvement plan for preparing the continued competitiveness. Also attention to the creative expression of the traditional spaces about the natural environment are implemented in Nurseries and we propose the possibilities that can be realized in the future Hanok child daycare facility. Result: The combination of modern materials and modern construction technology of New-hanok method with improved ability has improved the shortcomings of traditional architecture and increase the ease and safety of traditional architecture succeed the suggest direction of improvement modern society. Therefore, Hanok child daycare facility is preparing adequate capability to solve regional polarization and social care issues.

• Journal of Korea Entertainment Industry Association
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• v.15 no.3
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• pp.279-287
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• 2021

The purpose of this study is to analyze the changes of the cognitive function and health-related quality of life. Study subjects were 35 elderly living alone and they participated in the cognitive program for 8 weeks regularly. The assessment of cognitive function was used by the Loewenstein occupational therapy cognitive assessment battery and the orientation, visual attention, spatial perception, motor praxis, visuomotor organization, thinking operation, and attention. The assessment of health-related quality of life was used by the Short form-8 health survey and the gerneral health condition, physical function and role, pain, vitality, social function, mental health, and emotional role. As the results, all the results of variables showed the statistically significant increase after the participation in the cognitive program. To improve the cognitive function and health quality of life of the elderly living alone, the participation in the cognitive program should be considered.

• Journal of Broadcast Engineering
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• v.26 no.4
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• pp.441-452
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• 2021

In this paper, we propose a method for generating luma signal mapping function to improve the coding efficiency of luma signal mapping methods in LMCS. In this paper, we propose a method to reflect the cognitive and perceptual features by multiplying the attention map of convolutional neural networks on local spatial variance used to reflect local features in the existing LMCS. To evaluate the performance of the proposed method, BD-rate is compared with VTM-12.0 using classes A1, A2, B, C and D of MPEG standard test sequences under AI (All Intra) conditions. As a result of experiments, the proposed method in this paper shows improvement in performance the average of -0.07% for luma components in terms of BD-rate performance compared to VTM-12.0 and encoding/decoding time is almost the same.

• Smart Media Journal
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• v.12 no.5
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• pp.28-35
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• 2023

In this study, we propose a new light-weight model RoutingConvNet with fewer parameters to improve the applicability and practicality of speech emotion recognition. To reduce the number of learnable parameters, the proposed model connects bidirectional MFCCs on a channel-by-channel basis to learn long-term emotion dependence and extract contextual features. A light-weight deep CNN is constructed for low-level feature extraction, and self-attention is used to obtain information about channel and spatial signals in speech signals. In addition, we apply dynamic routing to improve the accuracy and construct a model that is robust to feature variations. The proposed model shows parameter reduction and accuracy improvement in the overall experiments of speech emotion datasets (EMO-DB, RAVDESS, and IEMOCAP), achieving 87.86%, 83.44%, and 66.06% accuracy respectively with about 156,000 parameters. In this study, we proposed a metric to calculate the trade-off between the number of parameters and accuracy for performance evaluation against light-weight.

• Spatial Information Research
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• v.20 no.2
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• pp.59-70
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• 2012

Advances in science and technology, especially the increasing popularity of smart phone has opened up infinite possibilities for the information retrieval. And the augmented reality technology which has started getting attention to various fields has allowed us to get an information in an innovative way by providing additional information to a real world before our eyes. The purpose of this study is to suggest and to construct mobile application service which give history-tourism information efficiently based on augmented reality technology. As a result of study, we suggest that it is needed to find the view point that the most accurate information can be provided to the users according to each contents such as maps, pictures, drawings etc. and to provide the function to the users which shows the view points information efficiently. The purpose of this study is to investigate the possibility whether the technology studied in private sector by using augmented reality based on smart phone can also be applied in public sector for the service of history tourism information. We expect that this study can be the basis for providing the more advanced augmented reality service in the near future.

• Journal of Broadcast Engineering
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• v.20 no.1
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• pp.3-15
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• 2015

Recently terrestrial digital broadcasting systems have experienced a growth with the demand of high data rate. In order to meet such demand, the MIMO technology has received a wide attention. This paper proposes a pre-coding method, which provides high space channel correlation for the improved performance over terrestrial broadcasting channels when the polarized $2{\times}2$ MIMO SM is adopted for DVB-NGH systems. When signals with two different modulation orders are transmitted through two antennas, a method that is based on non-uniform power is also proposed for improved reception performance. To optimize the proposed method, phase shifting values for the pre-coding method and appropriate unequal power ratio are obtained. These obtained parameters are applied to a terrestrial broadcasting system, and then the performance improvement over the conventional SM is shown through computer simulations.

• Journal of the Korean housing association
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• v.23 no.2
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• pp.37-46
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• 2012

Cities developed by prosperity of industrial activities are inflated due to the rapid influx of the urban population. In the process, their structure was reorganized with overall urban redevelopment methods. As the a results from the propulsion of overall redevelopment plan, the city environment exposed uniform urban landscapes, absence of sense of place for permanent abodes and other urban problems. At the beginning of the 21st century, people with introspections on the problems focused their attention on making their places attractive using their place's unique identity so that people could feel like to stay there for a long time. They tried to regenerate buildings and cities while still maintaining spatial and historical context of their living environment. This study looks into the regeneration of Shikumen Linong House as a fine example of such a redevelopment in order to provide with a practical resource for urban redevelopment plans in Korea. The study in the first content examines the formation processes of the city of Shanghai as the gateway of the modern China. In the second, it looks into the formation processes and characteristics of Shikumen Linong House in the Xintiandi complex between 1920 and 1930's. In the end, it analyses spatial and formational characteristics and the applied dwelling regeneration method for the of Shikumen Linong House in the Xintiandi complex.

• Journal of Korea Spatial Information System Society
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• v.5 no.1 s.9
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• pp.65-74
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• 2003

Location-based service is an important spatiotemporal database application area that provides the location-aware information of wireless terminals via positioning devices such as GPS. With the rapid advances of wireless communication systems, the requirement of mobile application areas including traffic, mobile commerce and supply chaining management became the center of attention for various research issues in spatiotemporal databases. In this paper we present the A-Quadtree, an efficient indexing method for answering location-based queries where the movement vector information (e.g., speed and velocity) is not presented. We implement the A-Quadtree with an index structure for object identifiers as a.Net component to apply the component to multiplatforms. We present our approach and describe the performance evaluation through various experiments. In our experiments, we compare the performance with previous approaches and show the enhanced efficiency of our method.