• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.127-133
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• 2022

In the wake of COVID-19, more consumers prefer non-face-to-face services and the explosion in the use of delivery apps is shaping a new delivery culture. Meanwhile, in order to solve social problems such as platform monopoly of private delivery apps and increased brokerage fees, many municipalities are launching public delivery apps from 2020 onwards. However, consumers who are used for the existing private delivery apps are not aware of the public delivery apps and the utilization rate is low. In this study, we will look at the impact of sense of community and service quality (information quality, delivery quality) on the intend to use public delivery apps. Studies have shown that SOC and information quality have a significant impact on the attitude of using public delivery apps, but not delivery quality. In addition, the attitude of using public delivery apps has been shown to have a mediating effect on the relationship between SOC, information quality and public delivery app use intentions respectively. Therefore, to activate the public delivery apps, it was found that it is necessary not only to promote, but also to improve user convenience, such as product search and user review inquiry to improve information quality, along with efforts to strengthen the sense of local community.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.1
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• pp.105-110
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• 2015

In cognitive radio networks, when the signal-to-noise ratio (SNR) of the link between a primary transmitter and receiver is sufficiently high, the primary transmission does not frequently demand cooperation because direct transmission of the primary communication is usually successful. Therefore, there are few opportunities for a secondary transmitter to cooperate with the primary user system in exchange for an opportunity to share the spectrum. This article proposes a scheme in which the secondary system can deliberately degrade the SNR of the primary transmission, making it so that the primary system needs cooperation from the secondary nodes, and thereby increases opportunities for spectrum sharing.

• Journal of the Korea Convergence Society
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• v.8 no.8
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• pp.27-32
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• 2017

The several wearable devices are not able to communicate through cable due to its portability. The wireless communication method is used because of its good communication quality and group action features when the several wearable devices communicate with each other. In this paper, we proposed the group decision algorithm for grouping display of the several wearable devices. It means that recognize as a group member after measuring distance in the wireless communication environment. The result of experience showed that the group-type display of several wearable devices method overcome the limit of the display of single wearable device.

• Journal of Broadcast Engineering
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• v.23 no.3
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• pp.369-382
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• 2018

We propose a single-shot high dynamic range (HDR) imaging algorithm using a deep convolutional neural network (CNN) for row-wise varying exposures in a single image. The proposed algorithm restores missing information resulting from under- and/or over-exposed pixels in an input image and reconstructs the raw radiance map. The main contribution of this work is the development of a loss function for the CNN employing the human visual system (HVS) properties. Then, the HDR image is obtained by applying a demosaicing algorithm. Experimental results demonstrate that the proposed algorithm provides higher-quality HDR images than conventional algorithms.

• Korean Journal of Cognitive Science
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• v.12 no.1_2
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• pp.1-9
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• 2001

In this paper. we present a web-based object model of language resources that are distributed in different places in variable forms. Language resources organized as objects distributed over web sites can be easily utilized to produce application systems of natural language processing. So. it renders effective maintenance of overall language processing environment in that upgrading language resources can lead to the mechanical upgrading of application systems. We implemented a dictionary constructing system for Korean Language (YDK2000). This system can integrate various linguistic dictionaries and also allow to construct high quality application specific dictionaries by connecting them to natural language systems on the Internet.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2000.06a
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• pp.210-215
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• 2000

HANTEC1.0은 12만 건의 문서집합과 30개의 질의집합, 그리고 각 질의에 대한 적합문서로 구성된 정보검색용 한글 테스트 컬렉션이다. 본 연구에서는 HANTEC1.0의 확장 및 보완하기 위해 과학기술분야 20개의 질의를 추가하였는데, 질의 추가를 위해서 일본 NACSIS 테스트 컬렉션의 질의를 번역하여 사용함으로써 한일 교차언어 검색환경을 조성하고자 하였다. 추가된 각 질의에 대해서는 여러 검색기에서 총 41가지 검색방법으로 검색한 후, 각 검색조합의 상위 50개 문서로 구성된 중간 결과집합을 만들었으며, 이를 대상으로 적합성판정에 대한 평가기준 및 절차 교육이 이루어진 평가자가 각 질의에 대한 적합성평가를 실시하였다. 이렇게 구축된 HANTEC 테스트 컬렉션의 적합문서 집합의 객관적 품질 평가와 시스템 성능평가를 위하여 통계적인 방법을 적용하므로써 공신력있고 일반화된 테스트 컬렉션을 구축하고자 하였다. 현재 HANTEC2.0은 검색분야 연구자 및 개발자에게 자유롭게 배포 중이며 정복머색 시스템의 신뢰도 측정을 목적으로 하는 학술대회의 연구결과 발표 및 제품 비교 등에 활용되어질 것이다.

• Korean journal of food and cookery science
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• v.14 no.4
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• pp.388-393
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• 1998

This study was conducted to compare the perception and the criteria for tasty Kimchi between Korean focus group and American focus group. The perception of taste of Kimchi by American focus group was rather simple than that of Korean focus group. American focus group considered spicy, sweet and crunchy properties as the most desirable characteristics of Kimchi. Besides that properties, Korean focus group considered complicated characteristic taste, e.g. a combination of hot, sour, savory, salty, sweet and fresh taste and refreshing properties as essential factor in tasty Kimchi. Korean focus group had more peculiar descriptors in taste and American in mouthfeel and texture.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.1
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• pp.85-91
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• 2013

Recently, the weight of high-quality multimedia contents is explosively growing out of the network total traffic. This steep increase of media contents to require huge traffic does not contribute to the generation of revenue streams and it leads to the situation of dumb pipe to trouble network providers into the big burden of investment on the network expansion. Accordingly, the transfer to the smart network to enable the effective delivery of large-scale media is imminently challenging issue to the network providers to seek the profitable business. The smart network revolves around the technologies to enhance end-to-end quality and fair usage with network resources and to optimize the traffic for the contents delivery over the concept of Content-Centric Network. In this paper, we propose an architecture and fundamental functions suitable for the smart network and suggest improved test results through the construction of an experimental network.

• Journal of Digital Contents Society
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• v.19 no.4
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• pp.649-659
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• 2018

We studied on factors influencing product purchase intention in Taobao live streaming shopping by adopting the Elaboration Likelihood Model (ELM). We used the survey method to collect the data and examine the hypotheses. The results are as follows. Source attractiveness has stronger effect on attitude toward product in the condition of hedonic product than in the condition of utilitarian product. Argument Quality has stronger effect on attitude toward product in the condition of utilitarian product than in the condition of hedonic product. In additional analysis, in the condition of the hedonic product, both of the source attractiveness and the argument quality have a positive effect on the attitude toward product. While argument quality has a positive effect on attitude toward product, but the attractiveness has no significant effect on the attitude toward product in the condition of utilitarian product. Finally, attitude toward product has a positive effect on product purchase intention.

• Journal of Digital Convergence
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• v.16 no.8
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• pp.311-320
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• 2018

In this study, we conducted a survey on the 20 - to 30-year-olds woman and men in a total of 291 questionnaires to analyze the impact on the level of customer satisfaction and revisit the factors of service quality and hospital selection. Analysis result, found that there was a correlation between the quality of service, customer satisfaction, and factors of re-intervient inquiry when selecting hospitals. In particular, it was found that hospital expenses and hospital map were affected by customer satisfaction and re-investigation companies, and the quality of the service after treatment had the greatest impact on other variables. As such, these results are considered to be of overall concern to the physician's ability to perform the procedure as well as to the service of the staff. Various follow-up studies are needed depending on the region.